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/*!*************************************!*\
  !*** ./node_modules/react/index.js ***!
  \*************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


if (false) {} else {
  module.exports = __webpack_require__(/*! ./cjs/react.development.js */ 648);
}


/***/ }),
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/*!***************************************************!*\
  !*** ./node_modules/codemirror/lib/codemirror.js ***!
  \***************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// This is CodeMirror (https://codemirror.net), a code editor
// implemented in JavaScript on top of the browser's DOM.
//
// You can find some technical background for some of the code below
// at http://marijnhaverbeke.nl/blog/#cm-internals .

(function (global, factory) {
   true ? module.exports = factory() :
  undefined;
}(this, (function () { 'use strict';

  // Kludges for bugs and behavior differences that can't be feature
  // detected are enabled based on userAgent etc sniffing.
  var userAgent = navigator.userAgent;
  var platform = navigator.platform;

  var gecko = /gecko\/\d/i.test(userAgent);
  var ie_upto10 = /MSIE \d/.test(userAgent);
  var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent);
  var edge = /Edge\/(\d+)/.exec(userAgent);
  var ie = ie_upto10 || ie_11up || edge;
  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]);
  var webkit = !edge && /WebKit\//.test(userAgent);
  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent);
  var chrome = !edge && /Chrome\//.test(userAgent);
  var presto = /Opera\//.test(userAgent);
  var safari = /Apple Computer/.test(navigator.vendor);
  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent);
  var phantom = /PhantomJS/.test(userAgent);

  var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent);
  var android = /Android/.test(userAgent);
  // This is woefully incomplete. Suggestions for alternative methods welcome.
  var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);
  var mac = ios || /Mac/.test(platform);
  var chromeOS = /\bCrOS\b/.test(userAgent);
  var windows = /win/i.test(platform);

  var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/);
  if (presto_version) { presto_version = Number(presto_version[1]); }
  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
  var captureRightClick = gecko || (ie && ie_version >= 9);

  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }

  var rmClass = function(node, cls) {
    var current = node.className;
    var match = classTest(cls).exec(current);
    if (match) {
      var after = current.slice(match.index + match[0].length);
      node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
    }
  };

  function removeChildren(e) {
    for (var count = e.childNodes.length; count > 0; --count)
      { e.removeChild(e.firstChild); }
    return e
  }

  function removeChildrenAndAdd(parent, e) {
    return removeChildren(parent).appendChild(e)
  }

  function elt(tag, content, className, style) {
    var e = document.createElement(tag);
    if (className) { e.className = className; }
    if (style) { e.style.cssText = style; }
    if (typeof content == "string") { e.appendChild(document.createTextNode(content)); }
    else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } }
    return e
  }
  // wrapper for elt, which removes the elt from the accessibility tree
  function eltP(tag, content, className, style) {
    var e = elt(tag, content, className, style);
    e.setAttribute("role", "presentation");
    return e
  }

  var range;
  if (document.createRange) { range = function(node, start, end, endNode) {
    var r = document.createRange();
    r.setEnd(endNode || node, end);
    r.setStart(node, start);
    return r
  }; }
  else { range = function(node, start, end) {
    var r = document.body.createTextRange();
    try { r.moveToElementText(node.parentNode); }
    catch(e) { return r }
    r.collapse(true);
    r.moveEnd("character", end);
    r.moveStart("character", start);
    return r
  }; }

  function contains(parent, child) {
    if (child.nodeType == 3) // Android browser always returns false when child is a textnode
      { child = child.parentNode; }
    if (parent.contains)
      { return parent.contains(child) }
    do {
      if (child.nodeType == 11) { child = child.host; }
      if (child == parent) { return true }
    } while (child = child.parentNode)
  }

  function activeElt() {
    // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement.
    // IE < 10 will throw when accessed while the page is loading or in an iframe.
    // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.
    var activeElement;
    try {
      activeElement = document.activeElement;
    } catch(e) {
      activeElement = document.body || null;
    }
    while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)
      { activeElement = activeElement.shadowRoot.activeElement; }
    return activeElement
  }

  function addClass(node, cls) {
    var current = node.className;
    if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls; }
  }
  function joinClasses(a, b) {
    var as = a.split(" ");
    for (var i = 0; i < as.length; i++)
      { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i]; } }
    return b
  }

  var selectInput = function(node) { node.select(); };
  if (ios) // Mobile Safari apparently has a bug where select() is broken.
    { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; }
  else if (ie) // Suppress mysterious IE10 errors
    { selectInput = function(node) { try { node.select(); } catch(_e) {} }; }

  function bind(f) {
    var args = Array.prototype.slice.call(arguments, 1);
    return function(){return f.apply(null, args)}
  }

  function copyObj(obj, target, overwrite) {
    if (!target) { target = {}; }
    for (var prop in obj)
      { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
        { target[prop] = obj[prop]; } }
    return target
  }

  // Counts the column offset in a string, taking tabs into account.
  // Used mostly to find indentation.
  function countColumn(string, end, tabSize, startIndex, startValue) {
    if (end == null) {
      end = string.search(/[^\s\u00a0]/);
      if (end == -1) { end = string.length; }
    }
    for (var i = startIndex || 0, n = startValue || 0;;) {
      var nextTab = string.indexOf("\t", i);
      if (nextTab < 0 || nextTab >= end)
        { return n + (end - i) }
      n += nextTab - i;
      n += tabSize - (n % tabSize);
      i = nextTab + 1;
    }
  }

  var Delayed = function() {this.id = null;};
  Delayed.prototype.set = function (ms, f) {
    clearTimeout(this.id);
    this.id = setTimeout(f, ms);
  };

  function indexOf(array, elt) {
    for (var i = 0; i < array.length; ++i)
      { if (array[i] == elt) { return i } }
    return -1
  }

  // Number of pixels added to scroller and sizer to hide scrollbar
  var scrollerGap = 30;

  // Returned or thrown by various protocols to signal 'I'm not
  // handling this'.
  var Pass = {toString: function(){return "CodeMirror.Pass"}};

  // Reused option objects for setSelection & friends
  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};

  // The inverse of countColumn -- find the offset that corresponds to
  // a particular column.
  function findColumn(string, goal, tabSize) {
    for (var pos = 0, col = 0;;) {
      var nextTab = string.indexOf("\t", pos);
      if (nextTab == -1) { nextTab = string.length; }
      var skipped = nextTab - pos;
      if (nextTab == string.length || col + skipped >= goal)
        { return pos + Math.min(skipped, goal - col) }
      col += nextTab - pos;
      col += tabSize - (col % tabSize);
      pos = nextTab + 1;
      if (col >= goal) { return pos }
    }
  }

  var spaceStrs = [""];
  function spaceStr(n) {
    while (spaceStrs.length <= n)
      { spaceStrs.push(lst(spaceStrs) + " "); }
    return spaceStrs[n]
  }

  function lst(arr) { return arr[arr.length-1] }

  function map(array, f) {
    var out = [];
    for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); }
    return out
  }

  function insertSorted(array, value, score) {
    var pos = 0, priority = score(value);
    while (pos < array.length && score(array[pos]) <= priority) { pos++; }
    array.splice(pos, 0, value);
  }

  function nothing() {}

  function createObj(base, props) {
    var inst;
    if (Object.create) {
      inst = Object.create(base);
    } else {
      nothing.prototype = base;
      inst = new nothing();
    }
    if (props) { copyObj(props, inst); }
    return inst
  }

  var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
  function isWordCharBasic(ch) {
    return /\w/.test(ch) || ch > "\x80" &&
      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))
  }
  function isWordChar(ch, helper) {
    if (!helper) { return isWordCharBasic(ch) }
    if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true }
    return helper.test(ch)
  }

  function isEmpty(obj) {
    for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }
    return true
  }

  // Extending unicode characters. A series of a non-extending char +
  // any number of extending chars is treated as a single unit as far
  // as editing and measuring is concerned. This is not fully correct,
  // since some scripts/fonts/browsers also treat other configurations
  // of code points as a group.
  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }

  // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.
  function skipExtendingChars(str, pos, dir) {
    while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; }
    return pos
  }

  // Returns the value from the range [`from`; `to`] that satisfies
  // `pred` and is closest to `from`. Assumes that at least `to`
  // satisfies `pred`. Supports `from` being greater than `to`.
  function findFirst(pred, from, to) {
    // At any point we are certain `to` satisfies `pred`, don't know
    // whether `from` does.
    var dir = from > to ? -1 : 1;
    for (;;) {
      if (from == to) { return from }
      var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF);
      if (mid == from) { return pred(mid) ? from : to }
      if (pred(mid)) { to = mid; }
      else { from = mid + dir; }
    }
  }

  // The display handles the DOM integration, both for input reading
  // and content drawing. It holds references to DOM nodes and
  // display-related state.

  function Display(place, doc, input) {
    var d = this;
    this.input = input;

    // Covers bottom-right square when both scrollbars are present.
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
    d.scrollbarFiller.setAttribute("cm-not-content", "true");
    // Covers bottom of gutter when coverGutterNextToScrollbar is on
    // and h scrollbar is present.
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
    d.gutterFiller.setAttribute("cm-not-content", "true");
    // Will contain the actual code, positioned to cover the viewport.
    d.lineDiv = eltP("div", null, "CodeMirror-code");
    // Elements are added to these to represent selection and cursors.
    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
    // A visibility: hidden element used to find the size of things.
    d.measure = elt("div", null, "CodeMirror-measure");
    // When lines outside of the viewport are measured, they are drawn in this.
    d.lineMeasure = elt("div", null, "CodeMirror-measure");
    // Wraps everything that needs to exist inside the vertically-padded coordinate system
    d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
                      null, "position: relative; outline: none");
    var lines = eltP("div", [d.lineSpace], "CodeMirror-lines");
    // Moved around its parent to cover visible view.
    d.mover = elt("div", [lines], null, "position: relative");
    // Set to the height of the document, allowing scrolling.
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
    d.sizerWidth = null;
    // Behavior of elts with overflow: auto and padding is
    // inconsistent across browsers. This is used to ensure the
    // scrollable area is big enough.
    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
    // Will contain the gutters, if any.
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;
    // Actual scrollable element.
    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.
    d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");

    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
    if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; }

    if (place) {
      if (place.appendChild) { place.appendChild(d.wrapper); }
      else { place(d.wrapper); }
    }

    // Current rendered range (may be bigger than the view window).
    d.viewFrom = d.viewTo = doc.first;
    d.reportedViewFrom = d.reportedViewTo = doc.first;
    // Information about the rendered lines.
    d.view = [];
    d.renderedView = null;
    // Holds info about a single rendered line when it was rendered
    // for measurement, while not in view.
    d.externalMeasured = null;
    // Empty space (in pixels) above the view
    d.viewOffset = 0;
    d.lastWrapHeight = d.lastWrapWidth = 0;
    d.updateLineNumbers = null;

    d.nativeBarWidth = d.barHeight = d.barWidth = 0;
    d.scrollbarsClipped = false;

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)
    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
    // Set to true when a non-horizontal-scrolling line widget is
    // added. As an optimization, line widget aligning is skipped when
    // this is false.
    d.alignWidgets = false;

    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

    // Tracks the maximum line length so that the horizontal scrollbar
    // can be kept static when scrolling.
    d.maxLine = null;
    d.maxLineLength = 0;
    d.maxLineChanged = false;

    // Used for measuring wheel scrolling granularity
    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;

    // True when shift is held down.
    d.shift = false;

    // Used to track whether anything happened since the context menu
    // was opened.
    d.selForContextMenu = null;

    d.activeTouch = null;

    input.init(d);
  }

  // Find the line object corresponding to the given line number.
  function getLine(doc, n) {
    n -= doc.first;
    if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") }
    var chunk = doc;
    while (!chunk.lines) {
      for (var i = 0;; ++i) {
        var child = chunk.children[i], sz = child.chunkSize();
        if (n < sz) { chunk = child; break }
        n -= sz;
      }
    }
    return chunk.lines[n]
  }

  // Get the part of a document between two positions, as an array of
  // strings.
  function getBetween(doc, start, end) {
    var out = [], n = start.line;
    doc.iter(start.line, end.line + 1, function (line) {
      var text = line.text;
      if (n == end.line) { text = text.slice(0, end.ch); }
      if (n == start.line) { text = text.slice(start.ch); }
      out.push(text);
      ++n;
    });
    return out
  }
  // Get the lines between from and to, as array of strings.
  function getLines(doc, from, to) {
    var out = [];
    doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value
    return out
  }

  // Update the height of a line, propagating the height change
  // upwards to parent nodes.
  function updateLineHeight(line, height) {
    var diff = height - line.height;
    if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } }
  }

  // Given a line object, find its line number by walking up through
  // its parent links.
  function lineNo(line) {
    if (line.parent == null) { return null }
    var cur = line.parent, no = indexOf(cur.lines, line);
    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
      for (var i = 0;; ++i) {
        if (chunk.children[i] == cur) { break }
        no += chunk.children[i].chunkSize();
      }
    }
    return no + cur.first
  }

  // Find the line at the given vertical position, using the height
  // information in the document tree.
  function lineAtHeight(chunk, h) {
    var n = chunk.first;
    outer: do {
      for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {
        var child = chunk.children[i$1], ch = child.height;
        if (h < ch) { chunk = child; continue outer }
        h -= ch;
        n += child.chunkSize();
      }
      return n
    } while (!chunk.lines)
    var i = 0;
    for (; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i], lh = line.height;
      if (h < lh) { break }
      h -= lh;
    }
    return n + i
  }

  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}

  function lineNumberFor(options, i) {
    return String(options.lineNumberFormatter(i + options.firstLineNumber))
  }

  // A Pos instance represents a position within the text.
  function Pos(line, ch, sticky) {
    if ( sticky === void 0 ) sticky = null;

    if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }
    this.line = line;
    this.ch = ch;
    this.sticky = sticky;
  }

  // Compare two positions, return 0 if they are the same, a negative
  // number when a is less, and a positive number otherwise.
  function cmp(a, b) { return a.line - b.line || a.ch - b.ch }

  function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }

  function copyPos(x) {return Pos(x.line, x.ch)}
  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }
  function minPos(a, b) { return cmp(a, b) < 0 ? a : b }

  // Most of the external API clips given positions to make sure they
  // actually exist within the document.
  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}
  function clipPos(doc, pos) {
    if (pos.line < doc.first) { return Pos(doc.first, 0) }
    var last = doc.first + doc.size - 1;
    if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }
    return clipToLen(pos, getLine(doc, pos.line).text.length)
  }
  function clipToLen(pos, linelen) {
    var ch = pos.ch;
    if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }
    else if (ch < 0) { return Pos(pos.line, 0) }
    else { return pos }
  }
  function clipPosArray(doc, array) {
    var out = [];
    for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); }
    return out
  }

  // Optimize some code when these features are not used.
  var sawReadOnlySpans = false, sawCollapsedSpans = false;

  function seeReadOnlySpans() {
    sawReadOnlySpans = true;
  }

  function seeCollapsedSpans() {
    sawCollapsedSpans = true;
  }

  // TEXTMARKER SPANS

  function MarkedSpan(marker, from, to) {
    this.marker = marker;
    this.from = from; this.to = to;
  }

  // Search an array of spans for a span matching the given marker.
  function getMarkedSpanFor(spans, marker) {
    if (spans) { for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.marker == marker) { return span }
    } }
  }
  // Remove a span from an array, returning undefined if no spans are
  // left (we don't store arrays for lines without spans).
  function removeMarkedSpan(spans, span) {
    var r;
    for (var i = 0; i < spans.length; ++i)
      { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } }
    return r
  }
  // Add a span to a line.
  function addMarkedSpan(line, span) {
    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
    span.marker.attachLine(line);
  }

  // Used for the algorithm that adjusts markers for a change in the
  // document. These functions cut an array of spans at a given
  // character position, returning an array of remaining chunks (or
  // undefined if nothing remains).
  function markedSpansBefore(old, startCh, isInsert) {
    var nw;
    if (old) { for (var i = 0; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)
        ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
      }
    } }
    return nw
  }
  function markedSpansAfter(old, endCh, isInsert) {
    var nw;
    if (old) { for (var i = 0; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)
        ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
                                              span.to == null ? null : span.to - endCh));
      }
    } }
    return nw
  }

  // Given a change object, compute the new set of marker spans that
  // cover the line in which the change took place. Removes spans
  // entirely within the change, reconnects spans belonging to the
  // same marker that appear on both sides of the change, and cuts off
  // spans partially within the change. Returns an array of span
  // arrays with one element for each line in (after) the change.
  function stretchSpansOverChange(doc, change) {
    if (change.full) { return null }
    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) { return null }

    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
    // Get the spans that 'stick out' on both sides
    var first = markedSpansBefore(oldFirst, startCh, isInsert);
    var last = markedSpansAfter(oldLast, endCh, isInsert);

    // Next, merge those two ends
    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
    if (first) {
      // Fix up .to properties of first
      for (var i = 0; i < first.length; ++i) {
        var span = first[i];
        if (span.to == null) {
          var found = getMarkedSpanFor(last, span.marker);
          if (!found) { span.to = startCh; }
          else if (sameLine) { span.to = found.to == null ? null : found.to + offset; }
        }
      }
    }
    if (last) {
      // Fix up .from in last (or move them into first in case of sameLine)
      for (var i$1 = 0; i$1 < last.length; ++i$1) {
        var span$1 = last[i$1];
        if (span$1.to != null) { span$1.to += offset; }
        if (span$1.from == null) {
          var found$1 = getMarkedSpanFor(first, span$1.marker);
          if (!found$1) {
            span$1.from = offset;
            if (sameLine) { (first || (first = [])).push(span$1); }
          }
        } else {
          span$1.from += offset;
          if (sameLine) { (first || (first = [])).push(span$1); }
        }
      }
    }
    // Make sure we didn't create any zero-length spans
    if (first) { first = clearEmptySpans(first); }
    if (last && last != first) { last = clearEmptySpans(last); }

    var newMarkers = [first];
    if (!sameLine) {
      // Fill gap with whole-line-spans
      var gap = change.text.length - 2, gapMarkers;
      if (gap > 0 && first)
        { for (var i$2 = 0; i$2 < first.length; ++i$2)
          { if (first[i$2].to == null)
            { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } }
      for (var i$3 = 0; i$3 < gap; ++i$3)
        { newMarkers.push(gapMarkers); }
      newMarkers.push(last);
    }
    return newMarkers
  }

  // Remove spans that are empty and don't have a clearWhenEmpty
  // option of false.
  function clearEmptySpans(spans) {
    for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
        { spans.splice(i--, 1); }
    }
    if (!spans.length) { return null }
    return spans
  }

  // Used to 'clip' out readOnly ranges when making a change.
  function removeReadOnlyRanges(doc, from, to) {
    var markers = null;
    doc.iter(from.line, to.line + 1, function (line) {
      if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
        var mark = line.markedSpans[i].marker;
        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
          { (markers || (markers = [])).push(mark); }
      } }
    });
    if (!markers) { return null }
    var parts = [{from: from, to: to}];
    for (var i = 0; i < markers.length; ++i) {
      var mk = markers[i], m = mk.find(0);
      for (var j = 0; j < parts.length; ++j) {
        var p = parts[j];
        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }
        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
          { newParts.push({from: p.from, to: m.from}); }
        if (dto > 0 || !mk.inclusiveRight && !dto)
          { newParts.push({from: m.to, to: p.to}); }
        parts.splice.apply(parts, newParts);
        j += newParts.length - 3;
      }
    }
    return parts
  }

  // Connect or disconnect spans from a line.
  function detachMarkedSpans(line) {
    var spans = line.markedSpans;
    if (!spans) { return }
    for (var i = 0; i < spans.length; ++i)
      { spans[i].marker.detachLine(line); }
    line.markedSpans = null;
  }
  function attachMarkedSpans(line, spans) {
    if (!spans) { return }
    for (var i = 0; i < spans.length; ++i)
      { spans[i].marker.attachLine(line); }
    line.markedSpans = spans;
  }

  // Helpers used when computing which overlapping collapsed span
  // counts as the larger one.
  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }
  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }

  // Returns a number indicating which of two overlapping collapsed
  // spans is larger (and thus includes the other). Falls back to
  // comparing ids when the spans cover exactly the same range.
  function compareCollapsedMarkers(a, b) {
    var lenDiff = a.lines.length - b.lines.length;
    if (lenDiff != 0) { return lenDiff }
    var aPos = a.find(), bPos = b.find();
    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
    if (fromCmp) { return -fromCmp }
    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
    if (toCmp) { return toCmp }
    return b.id - a.id
  }

  // Find out whether a line ends or starts in a collapsed span. If
  // so, return the marker for that span.
  function collapsedSpanAtSide(line, start) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
        { found = sp.marker; }
    } }
    return found
  }
  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }
  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }

  function collapsedSpanAround(line, ch) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) { for (var i = 0; i < sps.length; ++i) {
      var sp = sps[i];
      if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) &&
          (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; }
    } }
    return found
  }

  // Test whether there exists a collapsed span that partially
  // overlaps (covers the start or end, but not both) of a new span.
  // Such overlap is not allowed.
  function conflictingCollapsedRange(doc, lineNo$$1, from, to, marker) {
    var line = getLine(doc, lineNo$$1);
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) { for (var i = 0; i < sps.length; ++i) {
      var sp = sps[i];
      if (!sp.marker.collapsed) { continue }
      var found = sp.marker.find(0);
      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }
      if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||
          fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))
        { return true }
    } }
  }

  // A visual line is a line as drawn on the screen. Folding, for
  // example, can cause multiple logical lines to appear on the same
  // visual line. This finds the start of the visual line that the
  // given line is part of (usually that is the line itself).
  function visualLine(line) {
    var merged;
    while (merged = collapsedSpanAtStart(line))
      { line = merged.find(-1, true).line; }
    return line
  }

  function visualLineEnd(line) {
    var merged;
    while (merged = collapsedSpanAtEnd(line))
      { line = merged.find(1, true).line; }
    return line
  }

  // Returns an array of logical lines that continue the visual line
  // started by the argument, or undefined if there are no such lines.
  function visualLineContinued(line) {
    var merged, lines;
    while (merged = collapsedSpanAtEnd(line)) {
      line = merged.find(1, true).line
      ;(lines || (lines = [])).push(line);
    }
    return lines
  }

  // Get the line number of the start of the visual line that the
  // given line number is part of.
  function visualLineNo(doc, lineN) {
    var line = getLine(doc, lineN), vis = visualLine(line);
    if (line == vis) { return lineN }
    return lineNo(vis)
  }

  // Get the line number of the start of the next visual line after
  // the given line.
  function visualLineEndNo(doc, lineN) {
    if (lineN > doc.lastLine()) { return lineN }
    var line = getLine(doc, lineN), merged;
    if (!lineIsHidden(doc, line)) { return lineN }
    while (merged = collapsedSpanAtEnd(line))
      { line = merged.find(1, true).line; }
    return lineNo(line) + 1
  }

  // Compute whether a line is hidden. Lines count as hidden when they
  // are part of a visual line that starts with another line, or when
  // they are entirely covered by collapsed, non-widget span.
  function lineIsHidden(doc, line) {
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (!sp.marker.collapsed) { continue }
      if (sp.from == null) { return true }
      if (sp.marker.widgetNode) { continue }
      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
        { return true }
    } }
  }
  function lineIsHiddenInner(doc, line, span) {
    if (span.to == null) {
      var end = span.marker.find(1, true);
      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))
    }
    if (span.marker.inclusiveRight && span.to == line.text.length)
      { return true }
    for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {
      sp = line.markedSpans[i];
      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
          (sp.to == null || sp.to != span.from) &&
          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
          lineIsHiddenInner(doc, line, sp)) { return true }
    }
  }

  // Find the height above the given line.
  function heightAtLine(lineObj) {
    lineObj = visualLine(lineObj);

    var h = 0, chunk = lineObj.parent;
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i];
      if (line == lineObj) { break }
      else { h += line.height; }
    }
    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
      for (var i$1 = 0; i$1 < p.children.length; ++i$1) {
        var cur = p.children[i$1];
        if (cur == chunk) { break }
        else { h += cur.height; }
      }
    }
    return h
  }

  // Compute the character length of a line, taking into account
  // collapsed ranges (see markText) that might hide parts, and join
  // other lines onto it.
  function lineLength(line) {
    if (line.height == 0) { return 0 }
    var len = line.text.length, merged, cur = line;
    while (merged = collapsedSpanAtStart(cur)) {
      var found = merged.find(0, true);
      cur = found.from.line;
      len += found.from.ch - found.to.ch;
    }
    cur = line;
    while (merged = collapsedSpanAtEnd(cur)) {
      var found$1 = merged.find(0, true);
      len -= cur.text.length - found$1.from.ch;
      cur = found$1.to.line;
      len += cur.text.length - found$1.to.ch;
    }
    return len
  }

  // Find the longest line in the document.
  function findMaxLine(cm) {
    var d = cm.display, doc = cm.doc;
    d.maxLine = getLine(doc, doc.first);
    d.maxLineLength = lineLength(d.maxLine);
    d.maxLineChanged = true;
    doc.iter(function (line) {
      var len = lineLength(line);
      if (len > d.maxLineLength) {
        d.maxLineLength = len;
        d.maxLine = line;
      }
    });
  }

  // BIDI HELPERS

  function iterateBidiSections(order, from, to, f) {
    if (!order) { return f(from, to, "ltr", 0) }
    var found = false;
    for (var i = 0; i < order.length; ++i) {
      var part = order[i];
      if (part.from < to && part.to > from || from == to && part.to == from) {
        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i);
        found = true;
      }
    }
    if (!found) { f(from, to, "ltr"); }
  }

  var bidiOther = null;
  function getBidiPartAt(order, ch, sticky) {
    var found;
    bidiOther = null;
    for (var i = 0; i < order.length; ++i) {
      var cur = order[i];
      if (cur.from < ch && cur.to > ch) { return i }
      if (cur.to == ch) {
        if (cur.from != cur.to && sticky == "before") { found = i; }
        else { bidiOther = i; }
      }
      if (cur.from == ch) {
        if (cur.from != cur.to && sticky != "before") { found = i; }
        else { bidiOther = i; }
      }
    }
    return found != null ? found : bidiOther
  }

  // Bidirectional ordering algorithm
  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
  // that this (partially) implements.

  // One-char codes used for character types:
  // L (L):   Left-to-Right
  // R (R):   Right-to-Left
  // r (AL):  Right-to-Left Arabic
  // 1 (EN):  European Number
  // + (ES):  European Number Separator
  // % (ET):  European Number Terminator
  // n (AN):  Arabic Number
  // , (CS):  Common Number Separator
  // m (NSM): Non-Spacing Mark
  // b (BN):  Boundary Neutral
  // s (B):   Paragraph Separator
  // t (S):   Segment Separator
  // w (WS):  Whitespace
  // N (ON):  Other Neutrals

  // Returns null if characters are ordered as they appear
  // (left-to-right), or an array of sections ({from, to, level}
  // objects) in the order in which they occur visually.
  var bidiOrdering = (function() {
    // Character types for codepoints 0 to 0xff
    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
    // Character types for codepoints 0x600 to 0x6f9
    var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111";
    function charType(code) {
      if (code <= 0xf7) { return lowTypes.charAt(code) }
      else if (0x590 <= code && code <= 0x5f4) { return "R" }
      else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }
      else if (0x6ee <= code && code <= 0x8ac) { return "r" }
      else if (0x2000 <= code && code <= 0x200b) { return "w" }
      else if (code == 0x200c) { return "b" }
      else { return "L" }
    }

    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;

    function BidiSpan(level, from, to) {
      this.level = level;
      this.from = from; this.to = to;
    }

    return function(str, direction) {
      var outerType = direction == "ltr" ? "L" : "R";

      if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false }
      var len = str.length, types = [];
      for (var i = 0; i < len; ++i)
        { types.push(charType(str.charCodeAt(i))); }

      // W1. Examine each non-spacing mark (NSM) in the level run, and
      // change the type of the NSM to the type of the previous
      // character. If the NSM is at the start of the level run, it will
      // get the type of sor.
      for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {
        var type = types[i$1];
        if (type == "m") { types[i$1] = prev; }
        else { prev = type; }
      }

      // W2. Search backwards from each instance of a European number
      // until the first strong type (R, L, AL, or sor) is found. If an
      // AL is found, change the type of the European number to Arabic
      // number.
      // W3. Change all ALs to R.
      for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {
        var type$1 = types[i$2];
        if (type$1 == "1" && cur == "r") { types[i$2] = "n"; }
        else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R"; } }
      }

      // W4. A single European separator between two European numbers
      // changes to a European number. A single common separator between
      // two numbers of the same type changes to that type.
      for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {
        var type$2 = types[i$3];
        if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1"; }
        else if (type$2 == "," && prev$1 == types[i$3+1] &&
                 (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1; }
        prev$1 = type$2;
      }

      // W5. A sequence of European terminators adjacent to European
      // numbers changes to all European numbers.
      // W6. Otherwise, separators and terminators change to Other
      // Neutral.
      for (var i$4 = 0; i$4 < len; ++i$4) {
        var type$3 = types[i$4];
        if (type$3 == ",") { types[i$4] = "N"; }
        else if (type$3 == "%") {
          var end = (void 0);
          for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {}
          var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
          for (var j = i$4; j < end; ++j) { types[j] = replace; }
          i$4 = end - 1;
        }
      }

      // W7. Search backwards from each instance of a European number
      // until the first strong type (R, L, or sor) is found. If an L is
      // found, then change the type of the European number to L.
      for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {
        var type$4 = types[i$5];
        if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L"; }
        else if (isStrong.test(type$4)) { cur$1 = type$4; }
      }

      // N1. A sequence of neutrals takes the direction of the
      // surrounding strong text if the text on both sides has the same
      // direction. European and Arabic numbers act as if they were R in
      // terms of their influence on neutrals. Start-of-level-run (sor)
      // and end-of-level-run (eor) are used at level run boundaries.
      // N2. Any remaining neutrals take the embedding direction.
      for (var i$6 = 0; i$6 < len; ++i$6) {
        if (isNeutral.test(types[i$6])) {
          var end$1 = (void 0);
          for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}
          var before = (i$6 ? types[i$6-1] : outerType) == "L";
          var after = (end$1 < len ? types[end$1] : outerType) == "L";
          var replace$1 = before == after ? (before ? "L" : "R") : outerType;
          for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; }
          i$6 = end$1 - 1;
        }
      }

      // Here we depart from the documented algorithm, in order to avoid
      // building up an actual levels array. Since there are only three
      // levels (0, 1, 2) in an implementation that doesn't take
      // explicit embedding into account, we can build up the order on
      // the fly, without following the level-based algorithm.
      var order = [], m;
      for (var i$7 = 0; i$7 < len;) {
        if (countsAsLeft.test(types[i$7])) {
          var start = i$7;
          for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}
          order.push(new BidiSpan(0, start, i$7));
        } else {
          var pos = i$7, at = order.length;
          for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {}
          for (var j$2 = pos; j$2 < i$7;) {
            if (countsAsNum.test(types[j$2])) {
              if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); }
              var nstart = j$2;
              for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}
              order.splice(at, 0, new BidiSpan(2, nstart, j$2));
              pos = j$2;
            } else { ++j$2; }
          }
          if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); }
        }
      }
      if (direction == "ltr") {
        if (order[0].level == 1 && (m = str.match(/^\s+/))) {
          order[0].from = m[0].length;
          order.unshift(new BidiSpan(0, 0, m[0].length));
        }
        if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
          lst(order).to -= m[0].length;
          order.push(new BidiSpan(0, len - m[0].length, len));
        }
      }

      return direction == "rtl" ? order.reverse() : order
    }
  })();

  // Get the bidi ordering for the given line (and cache it). Returns
  // false for lines that are fully left-to-right, and an array of
  // BidiSpan objects otherwise.
  function getOrder(line, direction) {
    var order = line.order;
    if (order == null) { order = line.order = bidiOrdering(line.text, direction); }
    return order
  }

  // EVENT HANDLING

  // Lightweight event framework. on/off also work on DOM nodes,
  // registering native DOM handlers.

  var noHandlers = [];

  var on = function(emitter, type, f) {
    if (emitter.addEventListener) {
      emitter.addEventListener(type, f, false);
    } else if (emitter.attachEvent) {
      emitter.attachEvent("on" + type, f);
    } else {
      var map$$1 = emitter._handlers || (emitter._handlers = {});
      map$$1[type] = (map$$1[type] || noHandlers).concat(f);
    }
  };

  function getHandlers(emitter, type) {
    return emitter._handlers && emitter._handlers[type] || noHandlers
  }

  function off(emitter, type, f) {
    if (emitter.removeEventListener) {
      emitter.removeEventListener(type, f, false);
    } else if (emitter.detachEvent) {
      emitter.detachEvent("on" + type, f);
    } else {
      var map$$1 = emitter._handlers, arr = map$$1 && map$$1[type];
      if (arr) {
        var index = indexOf(arr, f);
        if (index > -1)
          { map$$1[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }
      }
    }
  }

  function signal(emitter, type /*, values...*/) {
    var handlers = getHandlers(emitter, type);
    if (!handlers.length) { return }
    var args = Array.prototype.slice.call(arguments, 2);
    for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); }
  }

  // The DOM events that CodeMirror handles can be overridden by
  // registering a (non-DOM) handler on the editor for the event name,
  // and preventDefault-ing the event in that handler.
  function signalDOMEvent(cm, e, override) {
    if (typeof e == "string")
      { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; }
    signal(cm, override || e.type, cm, e);
    return e_defaultPrevented(e) || e.codemirrorIgnore
  }

  function signalCursorActivity(cm) {
    var arr = cm._handlers && cm._handlers.cursorActivity;
    if (!arr) { return }
    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
    for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)
      { set.push(arr[i]); } }
  }

  function hasHandler(emitter, type) {
    return getHandlers(emitter, type).length > 0
  }

  // Add on and off methods to a constructor's prototype, to make
  // registering events on such objects more convenient.
  function eventMixin(ctor) {
    ctor.prototype.on = function(type, f) {on(this, type, f);};
    ctor.prototype.off = function(type, f) {off(this, type, f);};
  }

  // Due to the fact that we still support jurassic IE versions, some
  // compatibility wrappers are needed.

  function e_preventDefault(e) {
    if (e.preventDefault) { e.preventDefault(); }
    else { e.returnValue = false; }
  }
  function e_stopPropagation(e) {
    if (e.stopPropagation) { e.stopPropagation(); }
    else { e.cancelBubble = true; }
  }
  function e_defaultPrevented(e) {
    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false
  }
  function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}

  function e_target(e) {return e.target || e.srcElement}
  function e_button(e) {
    var b = e.which;
    if (b == null) {
      if (e.button & 1) { b = 1; }
      else if (e.button & 2) { b = 3; }
      else if (e.button & 4) { b = 2; }
    }
    if (mac && e.ctrlKey && b == 1) { b = 3; }
    return b
  }

  // Detect drag-and-drop
  var dragAndDrop = function() {
    // There is *some* kind of drag-and-drop support in IE6-8, but I
    // couldn't get it to work yet.
    if (ie && ie_version < 9) { return false }
    var div = elt('div');
    return "draggable" in div || "dragDrop" in div
  }();

  var zwspSupported;
  function zeroWidthElement(measure) {
    if (zwspSupported == null) {
      var test = elt("span", "\u200b");
      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
      if (measure.firstChild.offsetHeight != 0)
        { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); }
    }
    var node = zwspSupported ? elt("span", "\u200b") :
      elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
    node.setAttribute("cm-text", "");
    return node
  }

  // Feature-detect IE's crummy client rect reporting for bidi text
  var badBidiRects;
  function hasBadBidiRects(measure) {
    if (badBidiRects != null) { return badBidiRects }
    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
    var r0 = range(txt, 0, 1).getBoundingClientRect();
    var r1 = range(txt, 1, 2).getBoundingClientRect();
    removeChildren(measure);
    if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)
    return badBidiRects = (r1.right - r0.right < 3)
  }

  // See if "".split is the broken IE version, if so, provide an
  // alternative way to split lines.
  var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) {
    var pos = 0, result = [], l = string.length;
    while (pos <= l) {
      var nl = string.indexOf("\n", pos);
      if (nl == -1) { nl = string.length; }
      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
      var rt = line.indexOf("\r");
      if (rt != -1) {
        result.push(line.slice(0, rt));
        pos += rt + 1;
      } else {
        result.push(line);
        pos = nl + 1;
      }
    }
    return result
  } : function (string) { return string.split(/\r\n?|\n/); };

  var hasSelection = window.getSelection ? function (te) {
    try { return te.selectionStart != te.selectionEnd }
    catch(e) { return false }
  } : function (te) {
    var range$$1;
    try {range$$1 = te.ownerDocument.selection.createRange();}
    catch(e) {}
    if (!range$$1 || range$$1.parentElement() != te) { return false }
    return range$$1.compareEndPoints("StartToEnd", range$$1) != 0
  };

  var hasCopyEvent = (function () {
    var e = elt("div");
    if ("oncopy" in e) { return true }
    e.setAttribute("oncopy", "return;");
    return typeof e.oncopy == "function"
  })();

  var badZoomedRects = null;
  function hasBadZoomedRects(measure) {
    if (badZoomedRects != null) { return badZoomedRects }
    var node = removeChildrenAndAdd(measure, elt("span", "x"));
    var normal = node.getBoundingClientRect();
    var fromRange = range(node, 0, 1).getBoundingClientRect();
    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1
  }

  // Known modes, by name and by MIME
  var modes = {}, mimeModes = {};

  // Extra arguments are stored as the mode's dependencies, which is
  // used by (legacy) mechanisms like loadmode.js to automatically
  // load a mode. (Preferred mechanism is the require/define calls.)
  function defineMode(name, mode) {
    if (arguments.length > 2)
      { mode.dependencies = Array.prototype.slice.call(arguments, 2); }
    modes[name] = mode;
  }

  function defineMIME(mime, spec) {
    mimeModes[mime] = spec;
  }

  // Given a MIME type, a {name, ...options} config object, or a name
  // string, return a mode config object.
  function resolveMode(spec) {
    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
      spec = mimeModes[spec];
    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
      var found = mimeModes[spec.name];
      if (typeof found == "string") { found = {name: found}; }
      spec = createObj(found, spec);
      spec.name = found.name;
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
      return resolveMode("application/xml")
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
      return resolveMode("application/json")
    }
    if (typeof spec == "string") { return {name: spec} }
    else { return spec || {name: "null"} }
  }

  // Given a mode spec (anything that resolveMode accepts), find and
  // initialize an actual mode object.
  function getMode(options, spec) {
    spec = resolveMode(spec);
    var mfactory = modes[spec.name];
    if (!mfactory) { return getMode(options, "text/plain") }
    var modeObj = mfactory(options, spec);
    if (modeExtensions.hasOwnProperty(spec.name)) {
      var exts = modeExtensions[spec.name];
      for (var prop in exts) {
        if (!exts.hasOwnProperty(prop)) { continue }
        if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop]; }
        modeObj[prop] = exts[prop];
      }
    }
    modeObj.name = spec.name;
    if (spec.helperType) { modeObj.helperType = spec.helperType; }
    if (spec.modeProps) { for (var prop$1 in spec.modeProps)
      { modeObj[prop$1] = spec.modeProps[prop$1]; } }

    return modeObj
  }

  // This can be used to attach properties to mode objects from
  // outside the actual mode definition.
  var modeExtensions = {};
  function extendMode(mode, properties) {
    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
    copyObj(properties, exts);
  }

  function copyState(mode, state) {
    if (state === true) { return state }
    if (mode.copyState) { return mode.copyState(state) }
    var nstate = {};
    for (var n in state) {
      var val = state[n];
      if (val instanceof Array) { val = val.concat([]); }
      nstate[n] = val;
    }
    return nstate
  }

  // Given a mode and a state (for that mode), find the inner mode and
  // state at the position that the state refers to.
  function innerMode(mode, state) {
    var info;
    while (mode.innerMode) {
      info = mode.innerMode(state);
      if (!info || info.mode == mode) { break }
      state = info.state;
      mode = info.mode;
    }
    return info || {mode: mode, state: state}
  }

  function startState(mode, a1, a2) {
    return mode.startState ? mode.startState(a1, a2) : true
  }

  // STRING STREAM

  // Fed to the mode parsers, provides helper functions to make
  // parsers more succinct.

  var StringStream = function(string, tabSize, lineOracle) {
    this.pos = this.start = 0;
    this.string = string;
    this.tabSize = tabSize || 8;
    this.lastColumnPos = this.lastColumnValue = 0;
    this.lineStart = 0;
    this.lineOracle = lineOracle;
  };

  StringStream.prototype.eol = function () {return this.pos >= this.string.length};
  StringStream.prototype.sol = function () {return this.pos == this.lineStart};
  StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};
  StringStream.prototype.next = function () {
    if (this.pos < this.string.length)
      { return this.string.charAt(this.pos++) }
  };
  StringStream.prototype.eat = function (match) {
    var ch = this.string.charAt(this.pos);
    var ok;
    if (typeof match == "string") { ok = ch == match; }
    else { ok = ch && (match.test ? match.test(ch) : match(ch)); }
    if (ok) {++this.pos; return ch}
  };
  StringStream.prototype.eatWhile = function (match) {
    var start = this.pos;
    while (this.eat(match)){}
    return this.pos > start
  };
  StringStream.prototype.eatSpace = function () {
      var this$1 = this;

    var start = this.pos;
    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos; }
    return this.pos > start
  };
  StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;};
  StringStream.prototype.skipTo = function (ch) {
    var found = this.string.indexOf(ch, this.pos);
    if (found > -1) {this.pos = found; return true}
  };
  StringStream.prototype.backUp = function (n) {this.pos -= n;};
  StringStream.prototype.column = function () {
    if (this.lastColumnPos < this.start) {
      this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
      this.lastColumnPos = this.start;
    }
    return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
  };
  StringStream.prototype.indentation = function () {
    return countColumn(this.string, null, this.tabSize) -
      (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
  };
  StringStream.prototype.match = function (pattern, consume, caseInsensitive) {
    if (typeof pattern == "string") {
      var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; };
      var substr = this.string.substr(this.pos, pattern.length);
      if (cased(substr) == cased(pattern)) {
        if (consume !== false) { this.pos += pattern.length; }
        return true
      }
    } else {
      var match = this.string.slice(this.pos).match(pattern);
      if (match && match.index > 0) { return null }
      if (match && consume !== false) { this.pos += match[0].length; }
      return match
    }
  };
  StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};
  StringStream.prototype.hideFirstChars = function (n, inner) {
    this.lineStart += n;
    try { return inner() }
    finally { this.lineStart -= n; }
  };
  StringStream.prototype.lookAhead = function (n) {
    var oracle = this.lineOracle;
    return oracle && oracle.lookAhead(n)
  };
  StringStream.prototype.baseToken = function () {
    var oracle = this.lineOracle;
    return oracle && oracle.baseToken(this.pos)
  };

  var SavedContext = function(state, lookAhead) {
    this.state = state;
    this.lookAhead = lookAhead;
  };

  var Context = function(doc, state, line, lookAhead) {
    this.state = state;
    this.doc = doc;
    this.line = line;
    this.maxLookAhead = lookAhead || 0;
    this.baseTokens = null;
    this.baseTokenPos = 1;
  };

  Context.prototype.lookAhead = function (n) {
    var line = this.doc.getLine(this.line + n);
    if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; }
    return line
  };

  Context.prototype.baseToken = function (n) {
      var this$1 = this;

    if (!this.baseTokens) { return null }
    while (this.baseTokens[this.baseTokenPos] <= n)
      { this$1.baseTokenPos += 2; }
    var type = this.baseTokens[this.baseTokenPos + 1];
    return {type: type && type.replace(/( |^)overlay .*/, ""),
            size: this.baseTokens[this.baseTokenPos] - n}
  };

  Context.prototype.nextLine = function () {
    this.line++;
    if (this.maxLookAhead > 0) { this.maxLookAhead--; }
  };

  Context.fromSaved = function (doc, saved, line) {
    if (saved instanceof SavedContext)
      { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }
    else
      { return new Context(doc, copyState(doc.mode, saved), line) }
  };

  Context.prototype.save = function (copy) {
    var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state;
    return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state
  };


  // Compute a style array (an array starting with a mode generation
  // -- for invalidation -- followed by pairs of end positions and
  // style strings), which is used to highlight the tokens on the
  // line.
  function highlightLine(cm, line, context, forceToEnd) {
    // A styles array always starts with a number identifying the
    // mode/overlays that it is based on (for easy invalidation).
    var st = [cm.state.modeGen], lineClasses = {};
    // Compute the base array of styles
    runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },
            lineClasses, forceToEnd);
    var state = context.state;

    // Run overlays, adjust style array.
    var loop = function ( o ) {
      context.baseTokens = st;
      var overlay = cm.state.overlays[o], i = 1, at = 0;
      context.state = true;
      runMode(cm, line.text, overlay.mode, context, function (end, style) {
        var start = i;
        // Ensure there's a token end at the current position, and that i points at it
        while (at < end) {
          var i_end = st[i];
          if (i_end > end)
            { st.splice(i, 1, end, st[i+1], i_end); }
          i += 2;
          at = Math.min(end, i_end);
        }
        if (!style) { return }
        if (overlay.opaque) {
          st.splice(start, i - start, end, "overlay " + style);
          i = start + 2;
        } else {
          for (; start < i; start += 2) {
            var cur = st[start+1];
            st[start+1] = (cur ? cur + " " : "") + "overlay " + style;
          }
        }
      }, lineClasses);
      context.state = state;
      context.baseTokens = null;
      context.baseTokenPos = 1;
    };

    for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );

    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}
  }

  function getLineStyles(cm, line, updateFrontier) {
    if (!line.styles || line.styles[0] != cm.state.modeGen) {
      var context = getContextBefore(cm, lineNo(line));
      var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state);
      var result = highlightLine(cm, line, context);
      if (resetState) { context.state = resetState; }
      line.stateAfter = context.save(!resetState);
      line.styles = result.styles;
      if (result.classes) { line.styleClasses = result.classes; }
      else if (line.styleClasses) { line.styleClasses = null; }
      if (updateFrontier === cm.doc.highlightFrontier)
        { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); }
    }
    return line.styles
  }

  function getContextBefore(cm, n, precise) {
    var doc = cm.doc, display = cm.display;
    if (!doc.mode.startState) { return new Context(doc, true, n) }
    var start = findStartLine(cm, n, precise);
    var saved = start > doc.first && getLine(doc, start - 1).stateAfter;
    var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start);

    doc.iter(start, n, function (line) {
      processLine(cm, line.text, context);
      var pos = context.line;
      line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null;
      context.nextLine();
    });
    if (precise) { doc.modeFrontier = context.line; }
    return context
  }

  // Lightweight form of highlight -- proceed over this line and
  // update state, but don't save a style array. Used for lines that
  // aren't currently visible.
  function processLine(cm, text, context, startAt) {
    var mode = cm.doc.mode;
    var stream = new StringStream(text, cm.options.tabSize, context);
    stream.start = stream.pos = startAt || 0;
    if (text == "") { callBlankLine(mode, context.state); }
    while (!stream.eol()) {
      readToken(mode, stream, context.state);
      stream.start = stream.pos;
    }
  }

  function callBlankLine(mode, state) {
    if (mode.blankLine) { return mode.blankLine(state) }
    if (!mode.innerMode) { return }
    var inner = innerMode(mode, state);
    if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }
  }

  function readToken(mode, stream, state, inner) {
    for (var i = 0; i < 10; i++) {
      if (inner) { inner[0] = innerMode(mode, state).mode; }
      var style = mode.token(stream, state);
      if (stream.pos > stream.start) { return style }
    }
    throw new Error("Mode " + mode.name + " failed to advance stream.")
  }

  var Token = function(stream, type, state) {
    this.start = stream.start; this.end = stream.pos;
    this.string = stream.current();
    this.type = type || null;
    this.state = state;
  };

  // Utility for getTokenAt and getLineTokens
  function takeToken(cm, pos, precise, asArray) {
    var doc = cm.doc, mode = doc.mode, style;
    pos = clipPos(doc, pos);
    var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise);
    var stream = new StringStream(line.text, cm.options.tabSize, context), tokens;
    if (asArray) { tokens = []; }
    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
      stream.start = stream.pos;
      style = readToken(mode, stream, context.state);
      if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); }
    }
    return asArray ? tokens : new Token(stream, style, context.state)
  }

  function extractLineClasses(type, output) {
    if (type) { for (;;) {
      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
      if (!lineClass) { break }
      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
      var prop = lineClass[1] ? "bgClass" : "textClass";
      if (output[prop] == null)
        { output[prop] = lineClass[2]; }
      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
        { output[prop] += " " + lineClass[2]; }
    } }
    return type
  }

  // Run the given mode's parser over a line, calling f for each token.
  function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {
    var flattenSpans = mode.flattenSpans;
    if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; }
    var curStart = 0, curStyle = null;
    var stream = new StringStream(text, cm.options.tabSize, context), style;
    var inner = cm.options.addModeClass && [null];
    if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); }
    while (!stream.eol()) {
      if (stream.pos > cm.options.maxHighlightLength) {
        flattenSpans = false;
        if (forceToEnd) { processLine(cm, text, context, stream.pos); }
        stream.pos = text.length;
        style = null;
      } else {
        style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses);
      }
      if (inner) {
        var mName = inner[0].name;
        if (mName) { style = "m-" + (style ? mName + " " + style : mName); }
      }
      if (!flattenSpans || curStyle != style) {
        while (curStart < stream.start) {
          curStart = Math.min(stream.start, curStart + 5000);
          f(curStart, curStyle);
        }
        curStyle = style;
      }
      stream.start = stream.pos;
    }
    while (curStart < stream.pos) {
      // Webkit seems to refuse to render text nodes longer than 57444
      // characters, and returns inaccurate measurements in nodes
      // starting around 5000 chars.
      var pos = Math.min(stream.pos, curStart + 5000);
      f(pos, curStyle);
      curStart = pos;
    }
  }

  // Finds the line to start with when starting a parse. Tries to
  // find a line with a stateAfter, so that it can start with a
  // valid state. If that fails, it returns the line with the
  // smallest indentation, which tends to need the least context to
  // parse correctly.
  function findStartLine(cm, n, precise) {
    var minindent, minline, doc = cm.doc;
    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
    for (var search = n; search > lim; --search) {
      if (search <= doc.first) { return doc.first }
      var line = getLine(doc, search - 1), after = line.stateAfter;
      if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))
        { return search }
      var indented = countColumn(line.text, null, cm.options.tabSize);
      if (minline == null || minindent > indented) {
        minline = search - 1;
        minindent = indented;
      }
    }
    return minline
  }

  function retreatFrontier(doc, n) {
    doc.modeFrontier = Math.min(doc.modeFrontier, n);
    if (doc.highlightFrontier < n - 10) { return }
    var start = doc.first;
    for (var line = n - 1; line > start; line--) {
      var saved = getLine(doc, line).stateAfter;
      // change is on 3
      // state on line 1 looked ahead 2 -- so saw 3
      // test 1 + 2 < 3 should cover this
      if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {
        start = line + 1;
        break
      }
    }
    doc.highlightFrontier = Math.min(doc.highlightFrontier, start);
  }

  // LINE DATA STRUCTURE

  // Line objects. These hold state related to a line, including
  // highlighting info (the styles array).
  var Line = function(text, markedSpans, estimateHeight) {
    this.text = text;
    attachMarkedSpans(this, markedSpans);
    this.height = estimateHeight ? estimateHeight(this) : 1;
  };

  Line.prototype.lineNo = function () { return lineNo(this) };
  eventMixin(Line);

  // Change the content (text, markers) of a line. Automatically
  // invalidates cached information and tries to re-estimate the
  // line's height.
  function updateLine(line, text, markedSpans, estimateHeight) {
    line.text = text;
    if (line.stateAfter) { line.stateAfter = null; }
    if (line.styles) { line.styles = null; }
    if (line.order != null) { line.order = null; }
    detachMarkedSpans(line);
    attachMarkedSpans(line, markedSpans);
    var estHeight = estimateHeight ? estimateHeight(line) : 1;
    if (estHeight != line.height) { updateLineHeight(line, estHeight); }
  }

  // Detach a line from the document tree and its markers.
  function cleanUpLine(line) {
    line.parent = null;
    detachMarkedSpans(line);
  }

  // Convert a style as returned by a mode (either null, or a string
  // containing one or more styles) to a CSS style. This is cached,
  // and also looks for line-wide styles.
  var styleToClassCache = {}, styleToClassCacheWithMode = {};
  function interpretTokenStyle(style, options) {
    if (!style || /^\s*$/.test(style)) { return null }
    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
    return cache[style] ||
      (cache[style] = style.replace(/\S+/g, "cm-$&"))
  }

  // Render the DOM representation of the text of a line. Also builds
  // up a 'line map', which points at the DOM nodes that represent
  // specific stretches of text, and is used by the measuring code.
  // The returned object contains the DOM node, this map, and
  // information about line-wide styles that were set by the mode.
  function buildLineContent(cm, lineView) {
    // The padding-right forces the element to have a 'border', which
    // is needed on Webkit to be able to get line-level bounding
    // rectangles for it (in measureChar).
    var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null);
    var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content,
                   col: 0, pos: 0, cm: cm,
                   trailingSpace: false,
                   splitSpaces: cm.getOption("lineWrapping")};
    lineView.measure = {};

    // Iterate over the logical lines that make up this visual line.
    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
      var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0);
      builder.pos = 0;
      builder.addToken = buildToken;
      // Optionally wire in some hacks into the token-rendering
      // algorithm, to deal with browser quirks.
      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))
        { builder.addToken = buildTokenBadBidi(builder.addToken, order); }
      builder.map = [];
      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
      if (line.styleClasses) {
        if (line.styleClasses.bgClass)
          { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); }
        if (line.styleClasses.textClass)
          { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); }
      }

      // Ensure at least a single node is present, for measuring.
      if (builder.map.length == 0)
        { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); }

      // Store the map and a cache object for the current logical line
      if (i == 0) {
        lineView.measure.map = builder.map;
        lineView.measure.cache = {};
      } else {
  (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)
        ;(lineView.measure.caches || (lineView.measure.caches = [])).push({});
      }
    }

    // See issue #2901
    if (webkit) {
      var last = builder.content.lastChild;
      if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab")))
        { builder.content.className = "cm-tab-wrap-hack"; }
    }

    signal(cm, "renderLine", cm, lineView.line, builder.pre);
    if (builder.pre.className)
      { builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); }

    return builder
  }

  function defaultSpecialCharPlaceholder(ch) {
    var token = elt("span", "\u2022", "cm-invalidchar");
    token.title = "\\u" + ch.charCodeAt(0).toString(16);
    token.setAttribute("aria-label", token.title);
    return token
  }

  // Build up the DOM representation for a single token, and add it to
  // the line map. Takes care to render special characters separately.
  function buildToken(builder, text, style, startStyle, endStyle, css, attributes) {
    if (!text) { return }
    var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text;
    var special = builder.cm.state.specialChars, mustWrap = false;
    var content;
    if (!special.test(text)) {
      builder.col += text.length;
      content = document.createTextNode(displayText);
      builder.map.push(builder.pos, builder.pos + text.length, content);
      if (ie && ie_version < 9) { mustWrap = true; }
      builder.pos += text.length;
    } else {
      content = document.createDocumentFragment();
      var pos = 0;
      while (true) {
        special.lastIndex = pos;
        var m = special.exec(text);
        var skipped = m ? m.index - pos : text.length - pos;
        if (skipped) {
          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
          if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])); }
          else { content.appendChild(txt); }
          builder.map.push(builder.pos, builder.pos + skipped, txt);
          builder.col += skipped;
          builder.pos += skipped;
        }
        if (!m) { break }
        pos += skipped + 1;
        var txt$1 = (void 0);
        if (m[0] == "\t") {
          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
          txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
          txt$1.setAttribute("role", "presentation");
          txt$1.setAttribute("cm-text", "\t");
          builder.col += tabWidth;
        } else if (m[0] == "\r" || m[0] == "\n") {
          txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"));
          txt$1.setAttribute("cm-text", m[0]);
          builder.col += 1;
        } else {
          txt$1 = builder.cm.options.specialCharPlaceholder(m[0]);
          txt$1.setAttribute("cm-text", m[0]);
          if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])); }
          else { content.appendChild(txt$1); }
          builder.col += 1;
        }
        builder.map.push(builder.pos, builder.pos + 1, txt$1);
        builder.pos++;
      }
    }
    builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32;
    if (style || startStyle || endStyle || mustWrap || css) {
      var fullStyle = style || "";
      if (startStyle) { fullStyle += startStyle; }
      if (endStyle) { fullStyle += endStyle; }
      var token = elt("span", [content], fullStyle, css);
      if (attributes) {
        for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != "style" && attr != "class")
          { token.setAttribute(attr, attributes[attr]); } }
      }
      return builder.content.appendChild(token)
    }
    builder.content.appendChild(content);
  }

  // Change some spaces to NBSP to prevent the browser from collapsing
  // trailing spaces at the end of a line when rendering text (issue #1362).
  function splitSpaces(text, trailingBefore) {
    if (text.length > 1 && !/  /.test(text)) { return text }
    var spaceBefore = trailingBefore, result = "";
    for (var i = 0; i < text.length; i++) {
      var ch = text.charAt(i);
      if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))
        { ch = "\u00a0"; }
      result += ch;
      spaceBefore = ch == " ";
    }
    return result
  }

  // Work around nonsense dimensions being reported for stretches of
  // right-to-left text.
  function buildTokenBadBidi(inner, order) {
    return function (builder, text, style, startStyle, endStyle, css, attributes) {
      style = style ? style + " cm-force-border" : "cm-force-border";
      var start = builder.pos, end = start + text.length;
      for (;;) {
        // Find the part that overlaps with the start of this text
        var part = (void 0);
        for (var i = 0; i < order.length; i++) {
          part = order[i];
          if (part.to > start && part.from <= start) { break }
        }
        if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) }
        inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes);
        startStyle = null;
        text = text.slice(part.to - start);
        start = part.to;
      }
    }
  }

  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
    var widget = !ignoreWidget && marker.widgetNode;
    if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); }
    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
      if (!widget)
        { widget = builder.content.appendChild(document.createElement("span")); }
      widget.setAttribute("cm-marker", marker.id);
    }
    if (widget) {
      builder.cm.display.input.setUneditable(widget);
      builder.content.appendChild(widget);
    }
    builder.pos += size;
    builder.trailingSpace = false;
  }

  // Outputs a number of spans to make up a line, taking highlighting
  // and marked text into account.
  function insertLineContent(line, builder, styles) {
    var spans = line.markedSpans, allText = line.text, at = 0;
    if (!spans) {
      for (var i$1 = 1; i$1 < styles.length; i$1+=2)
        { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); }
      return
    }

    var len = allText.length, pos = 0, i = 1, text = "", style, css;
    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes;
    for (;;) {
      if (nextChange == pos) { // Update current marker set
        spanStyle = spanEndStyle = spanStartStyle = css = "";
        attributes = null;
        collapsed = null; nextChange = Infinity;
        var foundBookmarks = [], endStyles = (void 0);
        for (var j = 0; j < spans.length; ++j) {
          var sp = spans[j], m = sp.marker;
          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
            foundBookmarks.push(m);
          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
            if (sp.to != null && sp.to != pos && nextChange > sp.to) {
              nextChange = sp.to;
              spanEndStyle = "";
            }
            if (m.className) { spanStyle += " " + m.className; }
            if (m.css) { css = (css ? css + ";" : "") + m.css; }
            if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle; }
            if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); }
            // support for the old title property
            // https://github.com/codemirror/CodeMirror/pull/5673
            if (m.title) { (attributes || (attributes = {})).title = m.title; }
            if (m.attributes) {
              for (var attr in m.attributes)
                { (attributes || (attributes = {}))[attr] = m.attributes[attr]; }
            }
            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
              { collapsed = sp; }
          } else if (sp.from > pos && nextChange > sp.from) {
            nextChange = sp.from;
          }
        }
        if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)
          { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1]; } } }

        if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)
          { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } }
        if (collapsed && (collapsed.from || 0) == pos) {
          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
                             collapsed.marker, collapsed.from == null);
          if (collapsed.to == null) { return }
          if (collapsed.to == pos) { collapsed = false; }
        }
      }
      if (pos >= len) { break }

      var upto = Math.min(len, nextChange);
      while (true) {
        if (text) {
          var end = pos + text.length;
          if (!collapsed) {
            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", css, attributes);
          }
          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}
          pos = end;
          spanStartStyle = "";
        }
        text = allText.slice(at, at = styles[i++]);
        style = interpretTokenStyle(styles[i++], builder.cm.options);
      }
    }
  }


  // These objects are used to represent the visible (currently drawn)
  // part of the document. A LineView may correspond to multiple
  // logical lines, if those are connected by collapsed ranges.
  function LineView(doc, line, lineN) {
    // The starting line
    this.line = line;
    // Continuing lines, if any
    this.rest = visualLineContinued(line);
    // Number of logical lines in this visual line
    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
    this.node = this.text = null;
    this.hidden = lineIsHidden(doc, line);
  }

  // Create a range of LineView objects for the given lines.
  function buildViewArray(cm, from, to) {
    var array = [], nextPos;
    for (var pos = from; pos < to; pos = nextPos) {
      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
      nextPos = pos + view.size;
      array.push(view);
    }
    return array
  }

  var operationGroup = null;

  function pushOperation(op) {
    if (operationGroup) {
      operationGroup.ops.push(op);
    } else {
      op.ownsGroup = operationGroup = {
        ops: [op],
        delayedCallbacks: []
      };
    }
  }

  function fireCallbacksForOps(group) {
    // Calls delayed callbacks and cursorActivity handlers until no
    // new ones appear
    var callbacks = group.delayedCallbacks, i = 0;
    do {
      for (; i < callbacks.length; i++)
        { callbacks[i].call(null); }
      for (var j = 0; j < group.ops.length; j++) {
        var op = group.ops[j];
        if (op.cursorActivityHandlers)
          { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
            { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } }
      }
    } while (i < callbacks.length)
  }

  function finishOperation(op, endCb) {
    var group = op.ownsGroup;
    if (!group) { return }

    try { fireCallbacksForOps(group); }
    finally {
      operationGroup = null;
      endCb(group);
    }
  }

  var orphanDelayedCallbacks = null;

  // Often, we want to signal events at a point where we are in the
  // middle of some work, but don't want the handler to start calling
  // other methods on the editor, which might be in an inconsistent
  // state or simply not expect any other events to happen.
  // signalLater looks whether there are any handlers, and schedules
  // them to be executed when the last operation ends, or, if no
  // operation is active, when a timeout fires.
  function signalLater(emitter, type /*, values...*/) {
    var arr = getHandlers(emitter, type);
    if (!arr.length) { return }
    var args = Array.prototype.slice.call(arguments, 2), list;
    if (operationGroup) {
      list = operationGroup.delayedCallbacks;
    } else if (orphanDelayedCallbacks) {
      list = orphanDelayedCallbacks;
    } else {
      list = orphanDelayedCallbacks = [];
      setTimeout(fireOrphanDelayed, 0);
    }
    var loop = function ( i ) {
      list.push(function () { return arr[i].apply(null, args); });
    };

    for (var i = 0; i < arr.length; ++i)
      loop( i );
  }

  function fireOrphanDelayed() {
    var delayed = orphanDelayedCallbacks;
    orphanDelayedCallbacks = null;
    for (var i = 0; i < delayed.length; ++i) { delayed[i](); }
  }

  // When an aspect of a line changes, a string is added to
  // lineView.changes. This updates the relevant part of the line's
  // DOM structure.
  function updateLineForChanges(cm, lineView, lineN, dims) {
    for (var j = 0; j < lineView.changes.length; j++) {
      var type = lineView.changes[j];
      if (type == "text") { updateLineText(cm, lineView); }
      else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims); }
      else if (type == "class") { updateLineClasses(cm, lineView); }
      else if (type == "widget") { updateLineWidgets(cm, lineView, dims); }
    }
    lineView.changes = null;
  }

  // Lines with gutter elements, widgets or a background class need to
  // be wrapped, and have the extra elements added to the wrapper div
  function ensureLineWrapped(lineView) {
    if (lineView.node == lineView.text) {
      lineView.node = elt("div", null, null, "position: relative");
      if (lineView.text.parentNode)
        { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); }
      lineView.node.appendChild(lineView.text);
      if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; }
    }
    return lineView.node
  }

  function updateLineBackground(cm, lineView) {
    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
    if (cls) { cls += " CodeMirror-linebackground"; }
    if (lineView.background) {
      if (cls) { lineView.background.className = cls; }
      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
    } else if (cls) {
      var wrap = ensureLineWrapped(lineView);
      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
      cm.display.input.setUneditable(lineView.background);
    }
  }

  // Wrapper around buildLineContent which will reuse the structure
  // in display.externalMeasured when possible.
  function getLineContent(cm, lineView) {
    var ext = cm.display.externalMeasured;
    if (ext && ext.line == lineView.line) {
      cm.display.externalMeasured = null;
      lineView.measure = ext.measure;
      return ext.built
    }
    return buildLineContent(cm, lineView)
  }

  // Redraw the line's text. Interacts with the background and text
  // classes because the mode may output tokens that influence these
  // classes.
  function updateLineText(cm, lineView) {
    var cls = lineView.text.className;
    var built = getLineContent(cm, lineView);
    if (lineView.text == lineView.node) { lineView.node = built.pre; }
    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
    lineView.text = built.pre;
    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
      lineView.bgClass = built.bgClass;
      lineView.textClass = built.textClass;
      updateLineClasses(cm, lineView);
    } else if (cls) {
      lineView.text.className = cls;
    }
  }

  function updateLineClasses(cm, lineView) {
    updateLineBackground(cm, lineView);
    if (lineView.line.wrapClass)
      { ensureLineWrapped(lineView).className = lineView.line.wrapClass; }
    else if (lineView.node != lineView.text)
      { lineView.node.className = ""; }
    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
    lineView.text.className = textClass || "";
  }

  function updateLineGutter(cm, lineView, lineN, dims) {
    if (lineView.gutter) {
      lineView.node.removeChild(lineView.gutter);
      lineView.gutter = null;
    }
    if (lineView.gutterBackground) {
      lineView.node.removeChild(lineView.gutterBackground);
      lineView.gutterBackground = null;
    }
    if (lineView.line.gutterClass) {
      var wrap = ensureLineWrapped(lineView);
      lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
                                      ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px"));
      cm.display.input.setUneditable(lineView.gutterBackground);
      wrap.insertBefore(lineView.gutterBackground, lineView.text);
    }
    var markers = lineView.line.gutterMarkers;
    if (cm.options.lineNumbers || markers) {
      var wrap$1 = ensureLineWrapped(lineView);
      var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"));
      cm.display.input.setUneditable(gutterWrap);
      wrap$1.insertBefore(gutterWrap, lineView.text);
      if (lineView.line.gutterClass)
        { gutterWrap.className += " " + lineView.line.gutterClass; }
      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        { lineView.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineN),
              "CodeMirror-linenumber CodeMirror-gutter-elt",
              ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))); }
      if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) {
        var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
        if (found)
          { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt",
                                     ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))); }
      } }
    }
  }

  function updateLineWidgets(cm, lineView, dims) {
    if (lineView.alignable) { lineView.alignable = null; }
    for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
      next = node.nextSibling;
      if (node.className == "CodeMirror-linewidget")
        { lineView.node.removeChild(node); }
    }
    insertLineWidgets(cm, lineView, dims);
  }

  // Build a line's DOM representation from scratch
  function buildLineElement(cm, lineView, lineN, dims) {
    var built = getLineContent(cm, lineView);
    lineView.text = lineView.node = built.pre;
    if (built.bgClass) { lineView.bgClass = built.bgClass; }
    if (built.textClass) { lineView.textClass = built.textClass; }

    updateLineClasses(cm, lineView);
    updateLineGutter(cm, lineView, lineN, dims);
    insertLineWidgets(cm, lineView, dims);
    return lineView.node
  }

  // A lineView may contain multiple logical lines (when merged by
  // collapsed spans). The widgets for all of them need to be drawn.
  function insertLineWidgets(cm, lineView, dims) {
    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
    if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
      { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } }
  }

  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
    if (!line.widgets) { return }
    var wrap = ensureLineWrapped(lineView);
    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
      if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true"); }
      positionLineWidget(widget, node, lineView, dims);
      cm.display.input.setUneditable(node);
      if (allowAbove && widget.above)
        { wrap.insertBefore(node, lineView.gutter || lineView.text); }
      else
        { wrap.appendChild(node); }
      signalLater(widget, "redraw");
    }
  }

  function positionLineWidget(widget, node, lineView, dims) {
    if (widget.noHScroll) {
  (lineView.alignable || (lineView.alignable = [])).push(node);
      var width = dims.wrapperWidth;
      node.style.left = dims.fixedPos + "px";
      if (!widget.coverGutter) {
        width -= dims.gutterTotalWidth;
        node.style.paddingLeft = dims.gutterTotalWidth + "px";
      }
      node.style.width = width + "px";
    }
    if (widget.coverGutter) {
      node.style.zIndex = 5;
      node.style.position = "relative";
      if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px"; }
    }
  }

  function widgetHeight(widget) {
    if (widget.height != null) { return widget.height }
    var cm = widget.doc.cm;
    if (!cm) { return 0 }
    if (!contains(document.body, widget.node)) {
      var parentStyle = "position: relative;";
      if (widget.coverGutter)
        { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; }
      if (widget.noHScroll)
        { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; }
      removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
    }
    return widget.height = widget.node.parentNode.offsetHeight
  }

  // Return true when the given mouse event happened in a widget
  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
      if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
          (n.parentNode == display.sizer && n != display.mover))
        { return true }
    }
  }

  // POSITION MEASUREMENT

  function paddingTop(display) {return display.lineSpace.offsetTop}
  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}
  function paddingH(display) {
    if (display.cachedPaddingH) { return display.cachedPaddingH }
    var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
    if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; }
    return data
  }

  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }
  function displayWidth(cm) {
    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth
  }
  function displayHeight(cm) {
    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight
  }

  // Ensure the lineView.wrapping.heights array is populated. This is
  // an array of bottom offsets for the lines that make up a drawn
  // line. When lineWrapping is on, there might be more than one
  // height.
  function ensureLineHeights(cm, lineView, rect) {
    var wrapping = cm.options.lineWrapping;
    var curWidth = wrapping && displayWidth(cm);
    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
      var heights = lineView.measure.heights = [];
      if (wrapping) {
        lineView.measure.width = curWidth;
        var rects = lineView.text.firstChild.getClientRects();
        for (var i = 0; i < rects.length - 1; i++) {
          var cur = rects[i], next = rects[i + 1];
          if (Math.abs(cur.bottom - next.bottom) > 2)
            { heights.push((cur.bottom + next.top) / 2 - rect.top); }
        }
      }
      heights.push(rect.bottom - rect.top);
    }
  }

  // Find a line map (mapping character offsets to text nodes) and a
  // measurement cache for the given line number. (A line view might
  // contain multiple lines when collapsed ranges are present.)
  function mapFromLineView(lineView, line, lineN) {
    if (lineView.line == line)
      { return {map: lineView.measure.map, cache: lineView.measure.cache} }
    for (var i = 0; i < lineView.rest.length; i++)
      { if (lineView.rest[i] == line)
        { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }
    for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)
      { if (lineNo(lineView.rest[i$1]) > lineN)
        { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }
  }

  // Render a line into the hidden node display.externalMeasured. Used
  // when measurement is needed for a line that's not in the viewport.
  function updateExternalMeasurement(cm, line) {
    line = visualLine(line);
    var lineN = lineNo(line);
    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
    view.lineN = lineN;
    var built = view.built = buildLineContent(cm, view);
    view.text = built.pre;
    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
    return view
  }

  // Get a {top, bottom, left, right} box (in line-local coordinates)
  // for a given character.
  function measureChar(cm, line, ch, bias) {
    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)
  }

  // Find a line view that corresponds to the given line number.
  function findViewForLine(cm, lineN) {
    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
      { return cm.display.view[findViewIndex(cm, lineN)] }
    var ext = cm.display.externalMeasured;
    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
      { return ext }
  }

  // Measurement can be split in two steps, the set-up work that
  // applies to the whole line, and the measurement of the actual
  // character. Functions like coordsChar, that need to do a lot of
  // measurements in a row, can thus ensure that the set-up work is
  // only done once.
  function prepareMeasureForLine(cm, line) {
    var lineN = lineNo(line);
    var view = findViewForLine(cm, lineN);
    if (view && !view.text) {
      view = null;
    } else if (view && view.changes) {
      updateLineForChanges(cm, view, lineN, getDimensions(cm));
      cm.curOp.forceUpdate = true;
    }
    if (!view)
      { view = updateExternalMeasurement(cm, line); }

    var info = mapFromLineView(view, line, lineN);
    return {
      line: line, view: view, rect: null,
      map: info.map, cache: info.cache, before: info.before,
      hasHeights: false
    }
  }

  // Given a prepared measurement object, measures the position of an
  // actual character (or fetches it from the cache).
  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
    if (prepared.before) { ch = -1; }
    var key = ch + (bias || ""), found;
    if (prepared.cache.hasOwnProperty(key)) {
      found = prepared.cache[key];
    } else {
      if (!prepared.rect)
        { prepared.rect = prepared.view.text.getBoundingClientRect(); }
      if (!prepared.hasHeights) {
        ensureLineHeights(cm, prepared.view, prepared.rect);
        prepared.hasHeights = true;
      }
      found = measureCharInner(cm, prepared, ch, bias);
      if (!found.bogus) { prepared.cache[key] = found; }
    }
    return {left: found.left, right: found.right,
            top: varHeight ? found.rtop : found.top,
            bottom: varHeight ? found.rbottom : found.bottom}
  }

  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};

  function nodeAndOffsetInLineMap(map$$1, ch, bias) {
    var node, start, end, collapse, mStart, mEnd;
    // First, search the line map for the text node corresponding to,
    // or closest to, the target character.
    for (var i = 0; i < map$$1.length; i += 3) {
      mStart = map$$1[i];
      mEnd = map$$1[i + 1];
      if (ch < mStart) {
        start = 0; end = 1;
        collapse = "left";
      } else if (ch < mEnd) {
        start = ch - mStart;
        end = start + 1;
      } else if (i == map$$1.length - 3 || ch == mEnd && map$$1[i + 3] > ch) {
        end = mEnd - mStart;
        start = end - 1;
        if (ch >= mEnd) { collapse = "right"; }
      }
      if (start != null) {
        node = map$$1[i + 2];
        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
          { collapse = bias; }
        if (bias == "left" && start == 0)
          { while (i && map$$1[i - 2] == map$$1[i - 3] && map$$1[i - 1].insertLeft) {
            node = map$$1[(i -= 3) + 2];
            collapse = "left";
          } }
        if (bias == "right" && start == mEnd - mStart)
          { while (i < map$$1.length - 3 && map$$1[i + 3] == map$$1[i + 4] && !map$$1[i + 5].insertLeft) {
            node = map$$1[(i += 3) + 2];
            collapse = "right";
          } }
        break
      }
    }
    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}
  }

  function getUsefulRect(rects, bias) {
    var rect = nullRect;
    if (bias == "left") { for (var i = 0; i < rects.length; i++) {
      if ((rect = rects[i]).left != rect.right) { break }
    } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {
      if ((rect = rects[i$1]).left != rect.right) { break }
    } }
    return rect
  }

  function measureCharInner(cm, prepared, ch, bias) {
    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;

    var rect;
    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
      for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned
        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; }
        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; }
        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)
          { rect = node.parentNode.getBoundingClientRect(); }
        else
          { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); }
        if (rect.left || rect.right || start == 0) { break }
        end = start;
        start = start - 1;
        collapse = "right";
      }
      if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); }
    } else { // If it is a widget, simply get the box for the whole widget.
      if (start > 0) { collapse = bias = "right"; }
      var rects;
      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
        { rect = rects[bias == "right" ? rects.length - 1 : 0]; }
      else
        { rect = node.getBoundingClientRect(); }
    }
    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
      var rSpan = node.parentNode.getClientRects()[0];
      if (rSpan)
        { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; }
      else
        { rect = nullRect; }
    }

    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
    var mid = (rtop + rbot) / 2;
    var heights = prepared.view.measure.heights;
    var i = 0;
    for (; i < heights.length - 1; i++)
      { if (mid < heights[i]) { break } }
    var top = i ? heights[i - 1] : 0, bot = heights[i];
    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
                  top: top, bottom: bot};
    if (!rect.left && !rect.right) { result.bogus = true; }
    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

    return result
  }

  // Work around problem with bounding client rects on ranges being
  // returned incorrectly when zoomed on IE10 and below.
  function maybeUpdateRectForZooming(measure, rect) {
    if (!window.screen || screen.logicalXDPI == null ||
        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
      { return rect }
    var scaleX = screen.logicalXDPI / screen.deviceXDPI;
    var scaleY = screen.logicalYDPI / screen.deviceYDPI;
    return {left: rect.left * scaleX, right: rect.right * scaleX,
            top: rect.top * scaleY, bottom: rect.bottom * scaleY}
  }

  function clearLineMeasurementCacheFor(lineView) {
    if (lineView.measure) {
      lineView.measure.cache = {};
      lineView.measure.heights = null;
      if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
        { lineView.measure.caches[i] = {}; } }
    }
  }

  function clearLineMeasurementCache(cm) {
    cm.display.externalMeasure = null;
    removeChildren(cm.display.lineMeasure);
    for (var i = 0; i < cm.display.view.length; i++)
      { clearLineMeasurementCacheFor(cm.display.view[i]); }
  }

  function clearCaches(cm) {
    clearLineMeasurementCache(cm);
    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
    if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; }
    cm.display.lineNumChars = null;
  }

  function pageScrollX() {
    // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206
    // which causes page_Offset and bounding client rects to use
    // different reference viewports and invalidate our calculations.
    if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) }
    return window.pageXOffset || (document.documentElement || document.body).scrollLeft
  }
  function pageScrollY() {
    if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) }
    return window.pageYOffset || (document.documentElement || document.body).scrollTop
  }

  function widgetTopHeight(lineObj) {
    var height = 0;
    if (lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above)
      { height += widgetHeight(lineObj.widgets[i]); } } }
    return height
  }

  // Converts a {top, bottom, left, right} box from line-local
  // coordinates into another coordinate system. Context may be one of
  // "line", "div" (display.lineDiv), "local"./null (editor), "window",
  // or "page".
  function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {
    if (!includeWidgets) {
      var height = widgetTopHeight(lineObj);
      rect.top += height; rect.bottom += height;
    }
    if (context == "line") { return rect }
    if (!context) { context = "local"; }
    var yOff = heightAtLine(lineObj);
    if (context == "local") { yOff += paddingTop(cm.display); }
    else { yOff -= cm.display.viewOffset; }
    if (context == "page" || context == "window") {
      var lOff = cm.display.lineSpace.getBoundingClientRect();
      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
      rect.left += xOff; rect.right += xOff;
    }
    rect.top += yOff; rect.bottom += yOff;
    return rect
  }

  // Coverts a box from "div" coords to another coordinate system.
  // Context may be "window", "page", "div", or "local"./null.
  function fromCoordSystem(cm, coords, context) {
    if (context == "div") { return coords }
    var left = coords.left, top = coords.top;
    // First move into "page" coordinate system
    if (context == "page") {
      left -= pageScrollX();
      top -= pageScrollY();
    } else if (context == "local" || !context) {
      var localBox = cm.display.sizer.getBoundingClientRect();
      left += localBox.left;
      top += localBox.top;
    }

    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}
  }

  function charCoords(cm, pos, context, lineObj, bias) {
    if (!lineObj) { lineObj = getLine(cm.doc, pos.line); }
    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)
  }

  // Returns a box for a given cursor position, which may have an
  // 'other' property containing the position of the secondary cursor
  // on a bidi boundary.
  // A cursor Pos(line, char, "before") is on the same visual line as `char - 1`
  // and after `char - 1` in writing order of `char - 1`
  // A cursor Pos(line, char, "after") is on the same visual line as `char`
  // and before `char` in writing order of `char`
  // Examples (upper-case letters are RTL, lower-case are LTR):
  //     Pos(0, 1, ...)
  //     before   after
  // ab     a|b     a|b
  // aB     a|B     aB|
  // Ab     |Ab     A|b
  // AB     B|A     B|A
  // Every position after the last character on a line is considered to stick
  // to the last character on the line.
  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
    lineObj = lineObj || getLine(cm.doc, pos.line);
    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }
    function get(ch, right) {
      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
      if (right) { m.left = m.right; } else { m.right = m.left; }
      return intoCoordSystem(cm, lineObj, m, context)
    }
    var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky;
    if (ch >= lineObj.text.length) {
      ch = lineObj.text.length;
      sticky = "before";
    } else if (ch <= 0) {
      ch = 0;
      sticky = "after";
    }
    if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") }

    function getBidi(ch, partPos, invert) {
      var part = order[partPos], right = part.level == 1;
      return get(invert ? ch - 1 : ch, right != invert)
    }
    var partPos = getBidiPartAt(order, ch, sticky);
    var other = bidiOther;
    var val = getBidi(ch, partPos, sticky == "before");
    if (other != null) { val.other = getBidi(ch, other, sticky != "before"); }
    return val
  }

  // Used to cheaply estimate the coordinates for a position. Used for
  // intermediate scroll updates.
  function estimateCoords(cm, pos) {
    var left = 0;
    pos = clipPos(cm.doc, pos);
    if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; }
    var lineObj = getLine(cm.doc, pos.line);
    var top = heightAtLine(lineObj) + paddingTop(cm.display);
    return {left: left, right: left, top: top, bottom: top + lineObj.height}
  }

  // Positions returned by coordsChar contain some extra information.
  // xRel is the relative x position of the input coordinates compared
  // to the found position (so xRel > 0 means the coordinates are to
  // the right of the character position, for example). When outside
  // is true, that means the coordinates lie outside the line's
  // vertical range.
  function PosWithInfo(line, ch, sticky, outside, xRel) {
    var pos = Pos(line, ch, sticky);
    pos.xRel = xRel;
    if (outside) { pos.outside = true; }
    return pos
  }

  // Compute the character position closest to the given coordinates.
  // Input must be lineSpace-local ("div" coordinate system).
  function coordsChar(cm, x, y) {
    var doc = cm.doc;
    y += cm.display.viewOffset;
    if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) }
    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
    if (lineN > last)
      { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) }
    if (x < 0) { x = 0; }

    var lineObj = getLine(doc, lineN);
    for (;;) {
      var found = coordsCharInner(cm, lineObj, lineN, x, y);
      var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 ? 1 : 0));
      if (!collapsed) { return found }
      var rangeEnd = collapsed.find(1);
      if (rangeEnd.line == lineN) { return rangeEnd }
      lineObj = getLine(doc, lineN = rangeEnd.line);
    }
  }

  function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {
    y -= widgetTopHeight(lineObj);
    var end = lineObj.text.length;
    var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0);
    end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end);
    return {begin: begin, end: end}
  }

  function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {
    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }
    var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top;
    return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)
  }

  // Returns true if the given side of a box is after the given
  // coordinates, in top-to-bottom, left-to-right order.
  function boxIsAfter(box, x, y, left) {
    return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x
  }

  function coordsCharInner(cm, lineObj, lineNo$$1, x, y) {
    // Move y into line-local coordinate space
    y -= heightAtLine(lineObj);
    var preparedMeasure = prepareMeasureForLine(cm, lineObj);
    // When directly calling `measureCharPrepared`, we have to adjust
    // for the widgets at this line.
    var widgetHeight$$1 = widgetTopHeight(lineObj);
    var begin = 0, end = lineObj.text.length, ltr = true;

    var order = getOrder(lineObj, cm.doc.direction);
    // If the line isn't plain left-to-right text, first figure out
    // which bidi section the coordinates fall into.
    if (order) {
      var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)
                   (cm, lineObj, lineNo$$1, preparedMeasure, order, x, y);
      ltr = part.level != 1;
      // The awkward -1 offsets are needed because findFirst (called
      // on these below) will treat its first bound as inclusive,
      // second as exclusive, but we want to actually address the
      // characters in the part's range
      begin = ltr ? part.from : part.to - 1;
      end = ltr ? part.to : part.from - 1;
    }

    // A binary search to find the first character whose bounding box
    // starts after the coordinates. If we run across any whose box wrap
    // the coordinates, store that.
    var chAround = null, boxAround = null;
    var ch = findFirst(function (ch) {
      var box = measureCharPrepared(cm, preparedMeasure, ch);
      box.top += widgetHeight$$1; box.bottom += widgetHeight$$1;
      if (!boxIsAfter(box, x, y, false)) { return false }
      if (box.top <= y && box.left <= x) {
        chAround = ch;
        boxAround = box;
      }
      return true
    }, begin, end);

    var baseX, sticky, outside = false;
    // If a box around the coordinates was found, use that
    if (boxAround) {
      // Distinguish coordinates nearer to the left or right side of the box
      var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr;
      ch = chAround + (atStart ? 0 : 1);
      sticky = atStart ? "after" : "before";
      baseX = atLeft ? boxAround.left : boxAround.right;
    } else {
      // (Adjust for extended bound, if necessary.)
      if (!ltr && (ch == end || ch == begin)) { ch++; }
      // To determine which side to associate with, get the box to the
      // left of the character and compare it's vertical position to the
      // coordinates
      sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" :
        (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight$$1 <= y) == ltr ?
        "after" : "before";
      // Now get accurate coordinates for this place, in order to get a
      // base X position
      var coords = cursorCoords(cm, Pos(lineNo$$1, ch, sticky), "line", lineObj, preparedMeasure);
      baseX = coords.left;
      outside = y < coords.top || y >= coords.bottom;
    }

    ch = skipExtendingChars(lineObj.text, ch, 1);
    return PosWithInfo(lineNo$$1, ch, sticky, outside, x - baseX)
  }

  function coordsBidiPart(cm, lineObj, lineNo$$1, preparedMeasure, order, x, y) {
    // Bidi parts are sorted left-to-right, and in a non-line-wrapping
    // situation, we can take this ordering to correspond to the visual
    // ordering. This finds the first part whose end is after the given
    // coordinates.
    var index = findFirst(function (i) {
      var part = order[i], ltr = part.level != 1;
      return boxIsAfter(cursorCoords(cm, Pos(lineNo$$1, ltr ? part.to : part.from, ltr ? "before" : "after"),
                                     "line", lineObj, preparedMeasure), x, y, true)
    }, 0, order.length - 1);
    var part = order[index];
    // If this isn't the first part, the part's start is also after
    // the coordinates, and the coordinates aren't on the same line as
    // that start, move one part back.
    if (index > 0) {
      var ltr = part.level != 1;
      var start = cursorCoords(cm, Pos(lineNo$$1, ltr ? part.from : part.to, ltr ? "after" : "before"),
                               "line", lineObj, preparedMeasure);
      if (boxIsAfter(start, x, y, true) && start.top > y)
        { part = order[index - 1]; }
    }
    return part
  }

  function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {
    // In a wrapped line, rtl text on wrapping boundaries can do things
    // that don't correspond to the ordering in our `order` array at
    // all, so a binary search doesn't work, and we want to return a
    // part that only spans one line so that the binary search in
    // coordsCharInner is safe. As such, we first find the extent of the
    // wrapped line, and then do a flat search in which we discard any
    // spans that aren't on the line.
    var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);
    var begin = ref.begin;
    var end = ref.end;
    if (/\s/.test(lineObj.text.charAt(end - 1))) { end--; }
    var part = null, closestDist = null;
    for (var i = 0; i < order.length; i++) {
      var p = order[i];
      if (p.from >= end || p.to <= begin) { continue }
      var ltr = p.level != 1;
      var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right;
      // Weigh against spans ending before this, so that they are only
      // picked if nothing ends after
      var dist = endX < x ? x - endX + 1e9 : endX - x;
      if (!part || closestDist > dist) {
        part = p;
        closestDist = dist;
      }
    }
    if (!part) { part = order[order.length - 1]; }
    // Clip the part to the wrapped line.
    if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; }
    if (part.to > end) { part = {from: part.from, to: end, level: part.level}; }
    return part
  }

  var measureText;
  // Compute the default text height.
  function textHeight(display) {
    if (display.cachedTextHeight != null) { return display.cachedTextHeight }
    if (measureText == null) {
      measureText = elt("pre");
      // Measure a bunch of lines, for browsers that compute
      // fractional heights.
      for (var i = 0; i < 49; ++i) {
        measureText.appendChild(document.createTextNode("x"));
        measureText.appendChild(elt("br"));
      }
      measureText.appendChild(document.createTextNode("x"));
    }
    removeChildrenAndAdd(display.measure, measureText);
    var height = measureText.offsetHeight / 50;
    if (height > 3) { display.cachedTextHeight = height; }
    removeChildren(display.measure);
    return height || 1
  }

  // Compute the default character width.
  function charWidth(display) {
    if (display.cachedCharWidth != null) { return display.cachedCharWidth }
    var anchor = elt("span", "xxxxxxxxxx");
    var pre = elt("pre", [anchor]);
    removeChildrenAndAdd(display.measure, pre);
    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
    if (width > 2) { display.cachedCharWidth = width; }
    return width || 10
  }

  // Do a bulk-read of the DOM positions and sizes needed to draw the
  // view, so that we don't interleave reading and writing to the DOM.
  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};
    var gutterLeft = d.gutters.clientLeft;
    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
      left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
      width[cm.options.gutters[i]] = n.clientWidth;
    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,
            gutterLeft: left,
            gutterWidth: width,
            wrapperWidth: d.wrapper.clientWidth}
  }

  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
  // but using getBoundingClientRect to get a sub-pixel-accurate
  // result.
  function compensateForHScroll(display) {
    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left
  }

  // Returns a function that estimates the height of a line, to use as
  // first approximation until the line becomes visible (and is thus
  // properly measurable).
  function estimateHeight(cm) {
    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
    return function (line) {
      if (lineIsHidden(cm.doc, line)) { return 0 }

      var widgetsHeight = 0;
      if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {
        if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; }
      } }

      if (wrapping)
        { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }
      else
        { return widgetsHeight + th }
    }
  }

  function estimateLineHeights(cm) {
    var doc = cm.doc, est = estimateHeight(cm);
    doc.iter(function (line) {
      var estHeight = est(line);
      if (estHeight != line.height) { updateLineHeight(line, estHeight); }
    });
  }

  // Given a mouse event, find the corresponding position. If liberal
  // is false, it checks whether a gutter or scrollbar was clicked,
  // and returns null if it was. forRect is used by rectangular
  // selections, and tries to estimate a character position even for
  // coordinates beyond the right of the text.
  function posFromMouse(cm, e, liberal, forRect) {
    var display = cm.display;
    if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null }

    var x, y, space = display.lineSpace.getBoundingClientRect();
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX - space.left; y = e.clientY - space.top; }
    catch (e) { return null }
    var coords = coordsChar(cm, x, y), line;
    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
    }
    return coords
  }

  // Find the view element corresponding to a given line. Return null
  // when the line isn't visible.
  function findViewIndex(cm, n) {
    if (n >= cm.display.viewTo) { return null }
    n -= cm.display.viewFrom;
    if (n < 0) { return null }
    var view = cm.display.view;
    for (var i = 0; i < view.length; i++) {
      n -= view[i].size;
      if (n < 0) { return i }
    }
  }

  function updateSelection(cm) {
    cm.display.input.showSelection(cm.display.input.prepareSelection());
  }

  function prepareSelection(cm, primary) {
    if ( primary === void 0 ) primary = true;

    var doc = cm.doc, result = {};
    var curFragment = result.cursors = document.createDocumentFragment();
    var selFragment = result.selection = document.createDocumentFragment();

    for (var i = 0; i < doc.sel.ranges.length; i++) {
      if (!primary && i == doc.sel.primIndex) { continue }
      var range$$1 = doc.sel.ranges[i];
      if (range$$1.from().line >= cm.display.viewTo || range$$1.to().line < cm.display.viewFrom) { continue }
      var collapsed = range$$1.empty();
      if (collapsed || cm.options.showCursorWhenSelecting)
        { drawSelectionCursor(cm, range$$1.head, curFragment); }
      if (!collapsed)
        { drawSelectionRange(cm, range$$1, selFragment); }
    }
    return result
  }

  // Draws a cursor for the given range
  function drawSelectionCursor(cm, head, output) {
    var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine);

    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
    cursor.style.left = pos.left + "px";
    cursor.style.top = pos.top + "px";
    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";

    if (pos.other) {
      // Secondary cursor, shown when on a 'jump' in bi-directional text
      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
      otherCursor.style.display = "";
      otherCursor.style.left = pos.other.left + "px";
      otherCursor.style.top = pos.other.top + "px";
      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
    }
  }

  function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }

  // Draws the given range as a highlighted selection
  function drawSelectionRange(cm, range$$1, output) {
    var display = cm.display, doc = cm.doc;
    var fragment = document.createDocumentFragment();
    var padding = paddingH(cm.display), leftSide = padding.left;
    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;
    var docLTR = doc.direction == "ltr";

    function add(left, top, width, bottom) {
      if (top < 0) { top = 0; }
      top = Math.round(top);
      bottom = Math.round(bottom);
      fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n                             top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n                             height: " + (bottom - top) + "px")));
    }

    function drawForLine(line, fromArg, toArg) {
      var lineObj = getLine(doc, line);
      var lineLen = lineObj.text.length;
      var start, end;
      function coords(ch, bias) {
        return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
      }

      function wrapX(pos, dir, side) {
        var extent = wrappedLineExtentChar(cm, lineObj, null, pos);
        var prop = (dir == "ltr") == (side == "after") ? "left" : "right";
        var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1);
        return coords(ch, prop)[prop]
      }

      var order = getOrder(lineObj, doc.direction);
      iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {
        var ltr = dir == "ltr";
        var fromPos = coords(from, ltr ? "left" : "right");
        var toPos = coords(to - 1, ltr ? "right" : "left");

        var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen;
        var first = i == 0, last = !order || i == order.length - 1;
        if (toPos.top - fromPos.top <= 3) { // Single line
          var openLeft = (docLTR ? openStart : openEnd) && first;
          var openRight = (docLTR ? openEnd : openStart) && last;
          var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left;
          var right = openRight ? rightSide : (ltr ? toPos : fromPos).right;
          add(left, fromPos.top, right - left, fromPos.bottom);
        } else { // Multiple lines
          var topLeft, topRight, botLeft, botRight;
          if (ltr) {
            topLeft = docLTR && openStart && first ? leftSide : fromPos.left;
            topRight = docLTR ? rightSide : wrapX(from, dir, "before");
            botLeft = docLTR ? leftSide : wrapX(to, dir, "after");
            botRight = docLTR && openEnd && last ? rightSide : toPos.right;
          } else {
            topLeft = !docLTR ? leftSide : wrapX(from, dir, "before");
            topRight = !docLTR && openStart && first ? rightSide : fromPos.right;
            botLeft = !docLTR && openEnd && last ? leftSide : toPos.left;
            botRight = !docLTR ? rightSide : wrapX(to, dir, "after");
          }
          add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom);
          if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); }
          add(botLeft, toPos.top, botRight - botLeft, toPos.bottom);
        }

        if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; }
        if (cmpCoords(toPos, start) < 0) { start = toPos; }
        if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; }
        if (cmpCoords(toPos, end) < 0) { end = toPos; }
      });
      return {start: start, end: end}
    }

    var sFrom = range$$1.from(), sTo = range$$1.to();
    if (sFrom.line == sTo.line) {
      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
    } else {
      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
      var singleVLine = visualLine(fromLine) == visualLine(toLine);
      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
      if (singleVLine) {
        if (leftEnd.top < rightStart.top - 2) {
          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
        } else {
          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
        }
      }
      if (leftEnd.bottom < rightStart.top)
        { add(leftSide, leftEnd.bottom, null, rightStart.top); }
    }

    output.appendChild(fragment);
  }

  // Cursor-blinking
  function restartBlink(cm) {
    if (!cm.state.focused) { return }
    var display = cm.display;
    clearInterval(display.blinker);
    var on = true;
    display.cursorDiv.style.visibility = "";
    if (cm.options.cursorBlinkRate > 0)
      { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; },
        cm.options.cursorBlinkRate); }
    else if (cm.options.cursorBlinkRate < 0)
      { display.cursorDiv.style.visibility = "hidden"; }
  }

  function ensureFocus(cm) {
    if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
  }

  function delayBlurEvent(cm) {
    cm.state.delayingBlurEvent = true;
    setTimeout(function () { if (cm.state.delayingBlurEvent) {
      cm.state.delayingBlurEvent = false;
      onBlur(cm);
    } }, 100);
  }

  function onFocus(cm, e) {
    if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false; }

    if (cm.options.readOnly == "nocursor") { return }
    if (!cm.state.focused) {
      signal(cm, "focus", cm, e);
      cm.state.focused = true;
      addClass(cm.display.wrapper, "CodeMirror-focused");
      // This test prevents this from firing when a context
      // menu is closed (since the input reset would kill the
      // select-all detection hack)
      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
        cm.display.input.reset();
        if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730
      }
      cm.display.input.receivedFocus();
    }
    restartBlink(cm);
  }
  function onBlur(cm, e) {
    if (cm.state.delayingBlurEvent) { return }

    if (cm.state.focused) {
      signal(cm, "blur", cm, e);
      cm.state.focused = false;
      rmClass(cm.display.wrapper, "CodeMirror-focused");
    }
    clearInterval(cm.display.blinker);
    setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150);
  }

  // Read the actual heights of the rendered lines, and update their
  // stored heights to match.
  function updateHeightsInViewport(cm) {
    var display = cm.display;
    var prevBottom = display.lineDiv.offsetTop;
    for (var i = 0; i < display.view.length; i++) {
      var cur = display.view[i], wrapping = cm.options.lineWrapping;
      var height = (void 0), width = 0;
      if (cur.hidden) { continue }
      if (ie && ie_version < 8) {
        var bot = cur.node.offsetTop + cur.node.offsetHeight;
        height = bot - prevBottom;
        prevBottom = bot;
      } else {
        var box = cur.node.getBoundingClientRect();
        height = box.bottom - box.top;
        // Check that lines don't extend past the right of the current
        // editor width
        if (!wrapping && cur.text.firstChild)
          { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; }
      }
      var diff = cur.line.height - height;
      if (height < 2) { height = textHeight(display); }
      if (diff > .005 || diff < -.005) {
        updateLineHeight(cur.line, height);
        updateWidgetHeight(cur.line);
        if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)
          { updateWidgetHeight(cur.rest[j]); } }
      }
      if (width > cm.display.sizerWidth) {
        var chWidth = Math.ceil(width / charWidth(cm.display));
        if (chWidth > cm.display.maxLineLength) {
          cm.display.maxLineLength = chWidth;
          cm.display.maxLine = cur.line;
          cm.display.maxLineChanged = true;
        }
      }
    }
  }

  // Read and store the height of line widgets associated with the
  // given line.
  function updateWidgetHeight(line) {
    if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) {
      var w = line.widgets[i], parent = w.node.parentNode;
      if (parent) { w.height = parent.offsetHeight; }
    } }
  }

  // Compute the lines that are visible in a given viewport (defaults
  // the the current scroll position). viewport may contain top,
  // height, and ensure (see op.scrollToPos) properties.
  function visibleLines(display, doc, viewport) {
    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
    top = Math.floor(top - paddingTop(display));
    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;

    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
    // forces those lines into the viewport (if possible).
    if (viewport && viewport.ensure) {
      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
      if (ensureFrom < from) {
        from = ensureFrom;
        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
        to = ensureTo;
      }
    }
    return {from: from, to: Math.max(to, from + 1)}
  }

  // Re-align line numbers and gutter marks to compensate for
  // horizontal scrolling.
  function alignHorizontally(cm) {
    var display = cm.display, view = display.view;
    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }
    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
    var gutterW = display.gutters.offsetWidth, left = comp + "px";
    for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {
      if (cm.options.fixedGutter) {
        if (view[i].gutter)
          { view[i].gutter.style.left = left; }
        if (view[i].gutterBackground)
          { view[i].gutterBackground.style.left = left; }
      }
      var align = view[i].alignable;
      if (align) { for (var j = 0; j < align.length; j++)
        { align[j].style.left = left; } }
    } }
    if (cm.options.fixedGutter)
      { display.gutters.style.left = (comp + gutterW) + "px"; }
  }

  // Used to ensure that the line number gutter is still the right
  // size for the current document size. Returns true when an update
  // is needed.
  function maybeUpdateLineNumberWidth(cm) {
    if (!cm.options.lineNumbers) { return false }
    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
    if (last.length != display.lineNumChars) {
      var test = display.measure.appendChild(elt("div", [elt("div", last)],
                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
      display.lineGutter.style.width = "";
      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
      display.lineNumWidth = display.lineNumInnerWidth + padding;
      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
      display.lineGutter.style.width = display.lineNumWidth + "px";
      updateGutterSpace(cm);
      return true
    }
    return false
  }

  // SCROLLING THINGS INTO VIEW

  // If an editor sits on the top or bottom of the window, partially
  // scrolled out of view, this ensures that the cursor is visible.
  function maybeScrollWindow(cm, rect) {
    if (signalDOMEvent(cm, "scrollCursorIntoView")) { return }

    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
    if (rect.top + box.top < 0) { doScroll = true; }
    else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false; }
    if (doScroll != null && !phantom) {
      var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n                         top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n                         height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n                         left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;"));
      cm.display.lineSpace.appendChild(scrollNode);
      scrollNode.scrollIntoView(doScroll);
      cm.display.lineSpace.removeChild(scrollNode);
    }
  }

  // Scroll a given position into view (immediately), verifying that
  // it actually became visible (as line heights are accurately
  // measured, the position of something may 'drift' during drawing).
  function scrollPosIntoView(cm, pos, end, margin) {
    if (margin == null) { margin = 0; }
    var rect;
    if (!cm.options.lineWrapping && pos == end) {
      // Set pos and end to the cursor positions around the character pos sticks to
      // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch
      // If pos == Pos(_, 0, "before"), pos and end are unchanged
      pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos;
      end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos;
    }
    for (var limit = 0; limit < 5; limit++) {
      var changed = false;
      var coords = cursorCoords(cm, pos);
      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
      rect = {left: Math.min(coords.left, endCoords.left),
              top: Math.min(coords.top, endCoords.top) - margin,
              right: Math.max(coords.left, endCoords.left),
              bottom: Math.max(coords.bottom, endCoords.bottom) + margin};
      var scrollPos = calculateScrollPos(cm, rect);
      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
      if (scrollPos.scrollTop != null) {
        updateScrollTop(cm, scrollPos.scrollTop);
        if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; }
      }
      if (scrollPos.scrollLeft != null) {
        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; }
      }
      if (!changed) { break }
    }
    return rect
  }

  // Scroll a given set of coordinates into view (immediately).
  function scrollIntoView(cm, rect) {
    var scrollPos = calculateScrollPos(cm, rect);
    if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); }
    if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); }
  }

  // Calculate a new scroll position needed to scroll the given
  // rectangle into view. Returns an object with scrollTop and
  // scrollLeft properties. When these are undefined, the
  // vertical/horizontal position does not need to be adjusted.
  function calculateScrollPos(cm, rect) {
    var display = cm.display, snapMargin = textHeight(cm.display);
    if (rect.top < 0) { rect.top = 0; }
    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
    var screen = displayHeight(cm), result = {};
    if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; }
    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin;
    if (rect.top < screentop) {
      result.scrollTop = atTop ? 0 : rect.top;
    } else if (rect.bottom > screentop + screen) {
      var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen);
      if (newTop != screentop) { result.scrollTop = newTop; }
    }

    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
    var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
    var tooWide = rect.right - rect.left > screenw;
    if (tooWide) { rect.right = rect.left + screenw; }
    if (rect.left < 10)
      { result.scrollLeft = 0; }
    else if (rect.left < screenleft)
      { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)); }
    else if (rect.right > screenw + screenleft - 3)
      { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; }
    return result
  }

  // Store a relative adjustment to the scroll position in the current
  // operation (to be applied when the operation finishes).
  function addToScrollTop(cm, top) {
    if (top == null) { return }
    resolveScrollToPos(cm);
    cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
  }

  // Make sure that at the end of the operation the current cursor is
  // shown.
  function ensureCursorVisible(cm) {
    resolveScrollToPos(cm);
    var cur = cm.getCursor();
    cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin};
  }

  function scrollToCoords(cm, x, y) {
    if (x != null || y != null) { resolveScrollToPos(cm); }
    if (x != null) { cm.curOp.scrollLeft = x; }
    if (y != null) { cm.curOp.scrollTop = y; }
  }

  function scrollToRange(cm, range$$1) {
    resolveScrollToPos(cm);
    cm.curOp.scrollToPos = range$$1;
  }

  // When an operation has its scrollToPos property set, and another
  // scroll action is applied before the end of the operation, this
  // 'simulates' scrolling that position into view in a cheap way, so
  // that the effect of intermediate scroll commands is not ignored.
  function resolveScrollToPos(cm) {
    var range$$1 = cm.curOp.scrollToPos;
    if (range$$1) {
      cm.curOp.scrollToPos = null;
      var from = estimateCoords(cm, range$$1.from), to = estimateCoords(cm, range$$1.to);
      scrollToCoordsRange(cm, from, to, range$$1.margin);
    }
  }

  function scrollToCoordsRange(cm, from, to, margin) {
    var sPos = calculateScrollPos(cm, {
      left: Math.min(from.left, to.left),
      top: Math.min(from.top, to.top) - margin,
      right: Math.max(from.right, to.right),
      bottom: Math.max(from.bottom, to.bottom) + margin
    });
    scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop);
  }

  // Sync the scrollable area and scrollbars, ensure the viewport
  // covers the visible area.
  function updateScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) { return }
    if (!gecko) { updateDisplaySimple(cm, {top: val}); }
    setScrollTop(cm, val, true);
    if (gecko) { updateDisplaySimple(cm); }
    startWorker(cm, 100);
  }

  function setScrollTop(cm, val, forceScroll) {
    val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val);
    if (cm.display.scroller.scrollTop == val && !forceScroll) { return }
    cm.doc.scrollTop = val;
    cm.display.scrollbars.setScrollTop(val);
    if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; }
  }

  // Sync scroller and scrollbar, ensure the gutter elements are
  // aligned.
  function setScrollLeft(cm, val, isScroller, forceScroll) {
    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
    if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }
    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; }
    cm.display.scrollbars.setScrollLeft(val);
  }

  // SCROLLBARS

  // Prepare DOM reads needed to update the scrollbars. Done in one
  // shot to minimize update/measure roundtrips.
  function measureForScrollbars(cm) {
    var d = cm.display, gutterW = d.gutters.offsetWidth;
    var docH = Math.round(cm.doc.height + paddingVert(cm.display));
    return {
      clientHeight: d.scroller.clientHeight,
      viewHeight: d.wrapper.clientHeight,
      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
      viewWidth: d.wrapper.clientWidth,
      barLeft: cm.options.fixedGutter ? gutterW : 0,
      docHeight: docH,
      scrollHeight: docH + scrollGap(cm) + d.barHeight,
      nativeBarWidth: d.nativeBarWidth,
      gutterWidth: gutterW
    }
  }

  var NativeScrollbars = function(place, scroll, cm) {
    this.cm = cm;
    var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
    var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
    vert.tabIndex = horiz.tabIndex = -1;
    place(vert); place(horiz);

    on(vert, "scroll", function () {
      if (vert.clientHeight) { scroll(vert.scrollTop, "vertical"); }
    });
    on(horiz, "scroll", function () {
      if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal"); }
    });

    this.checkedZeroWidth = false;
    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
    if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; }
  };

  NativeScrollbars.prototype.update = function (measure) {
    var needsH = measure.scrollWidth > measure.clientWidth + 1;
    var needsV = measure.scrollHeight > measure.clientHeight + 1;
    var sWidth = measure.nativeBarWidth;

    if (needsV) {
      this.vert.style.display = "block";
      this.vert.style.bottom = needsH ? sWidth + "px" : "0";
      var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
      // A bug in IE8 can cause this value to be negative, so guard it.
      this.vert.firstChild.style.height =
        Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
    } else {
      this.vert.style.display = "";
      this.vert.firstChild.style.height = "0";
    }

    if (needsH) {
      this.horiz.style.display = "block";
      this.horiz.style.right = needsV ? sWidth + "px" : "0";
      this.horiz.style.left = measure.barLeft + "px";
      var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
      this.horiz.firstChild.style.width =
        Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
    } else {
      this.horiz.style.display = "";
      this.horiz.firstChild.style.width = "0";
    }

    if (!this.checkedZeroWidth && measure.clientHeight > 0) {
      if (sWidth == 0) { this.zeroWidthHack(); }
      this.checkedZeroWidth = true;
    }

    return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}
  };

  NativeScrollbars.prototype.setScrollLeft = function (pos) {
    if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; }
    if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz"); }
  };

  NativeScrollbars.prototype.setScrollTop = function (pos) {
    if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; }
    if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert"); }
  };

  NativeScrollbars.prototype.zeroWidthHack = function () {
    var w = mac && !mac_geMountainLion ? "12px" : "18px";
    this.horiz.style.height = this.vert.style.width = w;
    this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none";
    this.disableHoriz = new Delayed;
    this.disableVert = new Delayed;
  };

  NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {
    bar.style.pointerEvents = "auto";
    function maybeDisable() {
      // To find out whether the scrollbar is still visible, we
      // check whether the element under the pixel in the bottom
      // right corner of the scrollbar box is the scrollbar box
      // itself (when the bar is still visible) or its filler child
      // (when the bar is hidden). If it is still visible, we keep
      // it enabled, if it's hidden, we disable pointer events.
      var box = bar.getBoundingClientRect();
      var elt$$1 = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)
          : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);
      if (elt$$1 != bar) { bar.style.pointerEvents = "none"; }
      else { delay.set(1000, maybeDisable); }
    }
    delay.set(1000, maybeDisable);
  };

  NativeScrollbars.prototype.clear = function () {
    var parent = this.horiz.parentNode;
    parent.removeChild(this.horiz);
    parent.removeChild(this.vert);
  };

  var NullScrollbars = function () {};

  NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };
  NullScrollbars.prototype.setScrollLeft = function () {};
  NullScrollbars.prototype.setScrollTop = function () {};
  NullScrollbars.prototype.clear = function () {};

  function updateScrollbars(cm, measure) {
    if (!measure) { measure = measureForScrollbars(cm); }
    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
    updateScrollbarsInner(cm, measure);
    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
        { updateHeightsInViewport(cm); }
      updateScrollbarsInner(cm, measureForScrollbars(cm));
      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
    }
  }

  // Re-synchronize the fake scrollbars with the actual size of the
  // content.
  function updateScrollbarsInner(cm, measure) {
    var d = cm.display;
    var sizes = d.scrollbars.update(measure);

    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";
    d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent";

    if (sizes.right && sizes.bottom) {
      d.scrollbarFiller.style.display = "block";
      d.scrollbarFiller.style.height = sizes.bottom + "px";
      d.scrollbarFiller.style.width = sizes.right + "px";
    } else { d.scrollbarFiller.style.display = ""; }
    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
      d.gutterFiller.style.display = "block";
      d.gutterFiller.style.height = sizes.bottom + "px";
      d.gutterFiller.style.width = measure.gutterWidth + "px";
    } else { d.gutterFiller.style.display = ""; }
  }

  var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};

  function initScrollbars(cm) {
    if (cm.display.scrollbars) {
      cm.display.scrollbars.clear();
      if (cm.display.scrollbars.addClass)
        { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); }
    }

    cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {
      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
      // Prevent clicks in the scrollbars from killing focus
      on(node, "mousedown", function () {
        if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); }
      });
      node.setAttribute("cm-not-content", "true");
    }, function (pos, axis) {
      if (axis == "horizontal") { setScrollLeft(cm, pos); }
      else { updateScrollTop(cm, pos); }
    }, cm);
    if (cm.display.scrollbars.addClass)
      { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); }
  }

  // Operations are used to wrap a series of changes to the editor
  // state in such a way that each change won't have to update the
  // cursor and display (which would be awkward, slow, and
  // error-prone). Instead, display updates are batched and then all
  // combined and executed at once.

  var nextOpId = 0;
  // Start a new operation.
  function startOperation(cm) {
    cm.curOp = {
      cm: cm,
      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
      startHeight: cm.doc.height, // Used to detect need to update scrollbar
      forceUpdate: false,      // Used to force a redraw
      updateInput: 0,       // Whether to reset the input textarea
      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
      changeObjs: null,        // Accumulated changes, for firing change events
      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
      selectionChanged: false, // Whether the selection needs to be redrawn
      updateMaxLine: false,    // Set when the widest line needs to be determined anew
      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
      scrollToPos: null,       // Used to scroll to a specific position
      focus: false,
      id: ++nextOpId           // Unique ID
    };
    pushOperation(cm.curOp);
  }

  // Finish an operation, updating the display and signalling delayed events
  function endOperation(cm) {
    var op = cm.curOp;
    if (op) { finishOperation(op, function (group) {
      for (var i = 0; i < group.ops.length; i++)
        { group.ops[i].cm.curOp = null; }
      endOperations(group);
    }); }
  }

  // The DOM updates done when an operation finishes are batched so
  // that the minimum number of relayouts are required.
  function endOperations(group) {
    var ops = group.ops;
    for (var i = 0; i < ops.length; i++) // Read DOM
      { endOperation_R1(ops[i]); }
    for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)
      { endOperation_W1(ops[i$1]); }
    for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM
      { endOperation_R2(ops[i$2]); }
    for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)
      { endOperation_W2(ops[i$3]); }
    for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM
      { endOperation_finish(ops[i$4]); }
  }

  function endOperation_R1(op) {
    var cm = op.cm, display = cm.display;
    maybeClipScrollbars(cm);
    if (op.updateMaxLine) { findMaxLine(cm); }

    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
                         op.scrollToPos.to.line >= display.viewTo) ||
      display.maxLineChanged && cm.options.lineWrapping;
    op.update = op.mustUpdate &&
      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
  }

  function endOperation_W1(op) {
    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
  }

  function endOperation_R2(op) {
    var cm = op.cm, display = cm.display;
    if (op.updatedDisplay) { updateHeightsInViewport(cm); }

    op.barMeasure = measureForScrollbars(cm);

    // If the max line changed since it was last measured, measure it,
    // and ensure the document's width matches it.
    // updateDisplay_W2 will use these properties to do the actual resizing
    if (display.maxLineChanged && !cm.options.lineWrapping) {
      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
      cm.display.sizerWidth = op.adjustWidthTo;
      op.barMeasure.scrollWidth =
        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
    }

    if (op.updatedDisplay || op.selectionChanged)
      { op.preparedSelection = display.input.prepareSelection(); }
  }

  function endOperation_W2(op) {
    var cm = op.cm;

    if (op.adjustWidthTo != null) {
      cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
      if (op.maxScrollLeft < cm.doc.scrollLeft)
        { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); }
      cm.display.maxLineChanged = false;
    }

    var takeFocus = op.focus && op.focus == activeElt();
    if (op.preparedSelection)
      { cm.display.input.showSelection(op.preparedSelection, takeFocus); }
    if (op.updatedDisplay || op.startHeight != cm.doc.height)
      { updateScrollbars(cm, op.barMeasure); }
    if (op.updatedDisplay)
      { setDocumentHeight(cm, op.barMeasure); }

    if (op.selectionChanged) { restartBlink(cm); }

    if (cm.state.focused && op.updateInput)
      { cm.display.input.reset(op.typing); }
    if (takeFocus) { ensureFocus(op.cm); }
  }

  function endOperation_finish(op) {
    var cm = op.cm, display = cm.display, doc = cm.doc;

    if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); }

    // Abort mouse wheel delta measurement, when scrolling explicitly
    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
      { display.wheelStartX = display.wheelStartY = null; }

    // Propagate the scroll position to the actual DOM scroller
    if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); }

    if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); }
    // If we need to scroll a specific position into view, do so.
    if (op.scrollToPos) {
      var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
                                   clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
      maybeScrollWindow(cm, rect);
    }

    // Fire events for markers that are hidden/unidden by editing or
    // undoing
    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
    if (hidden) { for (var i = 0; i < hidden.length; ++i)
      { if (!hidden[i].lines.length) { signal(hidden[i], "hide"); } } }
    if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)
      { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide"); } } }

    if (display.wrapper.offsetHeight)
      { doc.scrollTop = cm.display.scroller.scrollTop; }

    // Fire change events, and delayed event handlers
    if (op.changeObjs)
      { signal(cm, "changes", cm, op.changeObjs); }
    if (op.update)
      { op.update.finish(); }
  }

  // Run the given function in an operation
  function runInOp(cm, f) {
    if (cm.curOp) { return f() }
    startOperation(cm);
    try { return f() }
    finally { endOperation(cm); }
  }
  // Wraps a function in an operation. Returns the wrapped function.
  function operation(cm, f) {
    return function() {
      if (cm.curOp) { return f.apply(cm, arguments) }
      startOperation(cm);
      try { return f.apply(cm, arguments) }
      finally { endOperation(cm); }
    }
  }
  // Used to add methods to editor and doc instances, wrapping them in
  // operations.
  function methodOp(f) {
    return function() {
      if (this.curOp) { return f.apply(this, arguments) }
      startOperation(this);
      try { return f.apply(this, arguments) }
      finally { endOperation(this); }
    }
  }
  function docMethodOp(f) {
    return function() {
      var cm = this.cm;
      if (!cm || cm.curOp) { return f.apply(this, arguments) }
      startOperation(cm);
      try { return f.apply(this, arguments) }
      finally { endOperation(cm); }
    }
  }

  // Updates the display.view data structure for a given change to the
  // document. From and to are in pre-change coordinates. Lendiff is
  // the amount of lines added or subtracted by the change. This is
  // used for changes that span multiple lines, or change the way
  // lines are divided into visual lines. regLineChange (below)
  // registers single-line changes.
  function regChange(cm, from, to, lendiff) {
    if (from == null) { from = cm.doc.first; }
    if (to == null) { to = cm.doc.first + cm.doc.size; }
    if (!lendiff) { lendiff = 0; }

    var display = cm.display;
    if (lendiff && to < display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers > from))
      { display.updateLineNumbers = from; }

    cm.curOp.viewChanged = true;

    if (from >= display.viewTo) { // Change after
      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
        { resetView(cm); }
    } else if (to <= display.viewFrom) { // Change before
      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
        resetView(cm);
      } else {
        display.viewFrom += lendiff;
        display.viewTo += lendiff;
      }
    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
      resetView(cm);
    } else if (from <= display.viewFrom) { // Top overlap
      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cut) {
        display.view = display.view.slice(cut.index);
        display.viewFrom = cut.lineN;
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    } else if (to >= display.viewTo) { // Bottom overlap
      var cut$1 = viewCuttingPoint(cm, from, from, -1);
      if (cut$1) {
        display.view = display.view.slice(0, cut$1.index);
        display.viewTo = cut$1.lineN;
      } else {
        resetView(cm);
      }
    } else { // Gap in the middle
      var cutTop = viewCuttingPoint(cm, from, from, -1);
      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cutTop && cutBot) {
        display.view = display.view.slice(0, cutTop.index)
          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
          .concat(display.view.slice(cutBot.index));
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    }

    var ext = display.externalMeasured;
    if (ext) {
      if (to < ext.lineN)
        { ext.lineN += lendiff; }
      else if (from < ext.lineN + ext.size)
        { display.externalMeasured = null; }
    }
  }

  // Register a change to a single line. Type must be one of "text",
  // "gutter", "class", "widget"
  function regLineChange(cm, line, type) {
    cm.curOp.viewChanged = true;
    var display = cm.display, ext = cm.display.externalMeasured;
    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
      { display.externalMeasured = null; }

    if (line < display.viewFrom || line >= display.viewTo) { return }
    var lineView = display.view[findViewIndex(cm, line)];
    if (lineView.node == null) { return }
    var arr = lineView.changes || (lineView.changes = []);
    if (indexOf(arr, type) == -1) { arr.push(type); }
  }

  // Clear the view.
  function resetView(cm) {
    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
    cm.display.view = [];
    cm.display.viewOffset = 0;
  }

  function viewCuttingPoint(cm, oldN, newN, dir) {
    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
      { return {index: index, lineN: newN} }
    var n = cm.display.viewFrom;
    for (var i = 0; i < index; i++)
      { n += view[i].size; }
    if (n != oldN) {
      if (dir > 0) {
        if (index == view.length - 1) { return null }
        diff = (n + view[index].size) - oldN;
        index++;
      } else {
        diff = n - oldN;
      }
      oldN += diff; newN += diff;
    }
    while (visualLineNo(cm.doc, newN) != newN) {
      if (index == (dir < 0 ? 0 : view.length - 1)) { return null }
      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
      index += dir;
    }
    return {index: index, lineN: newN}
  }

  // Force the view to cover a given range, adding empty view element
  // or clipping off existing ones as needed.
  function adjustView(cm, from, to) {
    var display = cm.display, view = display.view;
    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
      display.view = buildViewArray(cm, from, to);
      display.viewFrom = from;
    } else {
      if (display.viewFrom > from)
        { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); }
      else if (display.viewFrom < from)
        { display.view = display.view.slice(findViewIndex(cm, from)); }
      display.viewFrom = from;
      if (display.viewTo < to)
        { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); }
      else if (display.viewTo > to)
        { display.view = display.view.slice(0, findViewIndex(cm, to)); }
    }
    display.viewTo = to;
  }

  // Count the number of lines in the view whose DOM representation is
  // out of date (or nonexistent).
  function countDirtyView(cm) {
    var view = cm.display.view, dirty = 0;
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; }
    }
    return dirty
  }

  // HIGHLIGHT WORKER

  function startWorker(cm, time) {
    if (cm.doc.highlightFrontier < cm.display.viewTo)
      { cm.state.highlight.set(time, bind(highlightWorker, cm)); }
  }

  function highlightWorker(cm) {
    var doc = cm.doc;
    if (doc.highlightFrontier >= cm.display.viewTo) { return }
    var end = +new Date + cm.options.workTime;
    var context = getContextBefore(cm, doc.highlightFrontier);
    var changedLines = [];

    doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
      if (context.line >= cm.display.viewFrom) { // Visible
        var oldStyles = line.styles;
        var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null;
        var highlighted = highlightLine(cm, line, context, true);
        if (resetState) { context.state = resetState; }
        line.styles = highlighted.styles;
        var oldCls = line.styleClasses, newCls = highlighted.classes;
        if (newCls) { line.styleClasses = newCls; }
        else if (oldCls) { line.styleClasses = null; }
        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
        for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; }
        if (ischange) { changedLines.push(context.line); }
        line.stateAfter = context.save();
        context.nextLine();
      } else {
        if (line.text.length <= cm.options.maxHighlightLength)
          { processLine(cm, line.text, context); }
        line.stateAfter = context.line % 5 == 0 ? context.save() : null;
        context.nextLine();
      }
      if (+new Date > end) {
        startWorker(cm, cm.options.workDelay);
        return true
      }
    });
    doc.highlightFrontier = context.line;
    doc.modeFrontier = Math.max(doc.modeFrontier, context.line);
    if (changedLines.length) { runInOp(cm, function () {
      for (var i = 0; i < changedLines.length; i++)
        { regLineChange(cm, changedLines[i], "text"); }
    }); }
  }

  // DISPLAY DRAWING

  var DisplayUpdate = function(cm, viewport, force) {
    var display = cm.display;

    this.viewport = viewport;
    // Store some values that we'll need later (but don't want to force a relayout for)
    this.visible = visibleLines(display, cm.doc, viewport);
    this.editorIsHidden = !display.wrapper.offsetWidth;
    this.wrapperHeight = display.wrapper.clientHeight;
    this.wrapperWidth = display.wrapper.clientWidth;
    this.oldDisplayWidth = displayWidth(cm);
    this.force = force;
    this.dims = getDimensions(cm);
    this.events = [];
  };

  DisplayUpdate.prototype.signal = function (emitter, type) {
    if (hasHandler(emitter, type))
      { this.events.push(arguments); }
  };
  DisplayUpdate.prototype.finish = function () {
      var this$1 = this;

    for (var i = 0; i < this.events.length; i++)
      { signal.apply(null, this$1.events[i]); }
  };

  function maybeClipScrollbars(cm) {
    var display = cm.display;
    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
      display.heightForcer.style.height = scrollGap(cm) + "px";
      display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
      display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
      display.scrollbarsClipped = true;
    }
  }

  function selectionSnapshot(cm) {
    if (cm.hasFocus()) { return null }
    var active = activeElt();
    if (!active || !contains(cm.display.lineDiv, active)) { return null }
    var result = {activeElt: active};
    if (window.getSelection) {
      var sel = window.getSelection();
      if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {
        result.anchorNode = sel.anchorNode;
        result.anchorOffset = sel.anchorOffset;
        result.focusNode = sel.focusNode;
        result.focusOffset = sel.focusOffset;
      }
    }
    return result
  }

  function restoreSelection(snapshot) {
    if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return }
    snapshot.activeElt.focus();
    if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {
      var sel = window.getSelection(), range$$1 = document.createRange();
      range$$1.setEnd(snapshot.anchorNode, snapshot.anchorOffset);
      range$$1.collapse(false);
      sel.removeAllRanges();
      sel.addRange(range$$1);
      sel.extend(snapshot.focusNode, snapshot.focusOffset);
    }
  }

  // Does the actual updating of the line display. Bails out
  // (returning false) when there is nothing to be done and forced is
  // false.
  function updateDisplayIfNeeded(cm, update) {
    var display = cm.display, doc = cm.doc;

    if (update.editorIsHidden) {
      resetView(cm);
      return false
    }

    // Bail out if the visible area is already rendered and nothing changed.
    if (!update.force &&
        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
        display.renderedView == display.view && countDirtyView(cm) == 0)
      { return false }

    if (maybeUpdateLineNumberWidth(cm)) {
      resetView(cm);
      update.dims = getDimensions(cm);
    }

    // Compute a suitable new viewport (from & to)
    var end = doc.first + doc.size;
    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
    if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); }
    if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); }
    if (sawCollapsedSpans) {
      from = visualLineNo(cm.doc, from);
      to = visualLineEndNo(cm.doc, to);
    }

    var different = from != display.viewFrom || to != display.viewTo ||
      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
    adjustView(cm, from, to);

    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
    // Position the mover div to align with the current scroll position
    cm.display.mover.style.top = display.viewOffset + "px";

    var toUpdate = countDirtyView(cm);
    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
      { return false }

    // For big changes, we hide the enclosing element during the
    // update, since that speeds up the operations on most browsers.
    var selSnapshot = selectionSnapshot(cm);
    if (toUpdate > 4) { display.lineDiv.style.display = "none"; }
    patchDisplay(cm, display.updateLineNumbers, update.dims);
    if (toUpdate > 4) { display.lineDiv.style.display = ""; }
    display.renderedView = display.view;
    // There might have been a widget with a focused element that got
    // hidden or updated, if so re-focus it.
    restoreSelection(selSnapshot);

    // Prevent selection and cursors from interfering with the scroll
    // width and height.
    removeChildren(display.cursorDiv);
    removeChildren(display.selectionDiv);
    display.gutters.style.height = display.sizer.style.minHeight = 0;

    if (different) {
      display.lastWrapHeight = update.wrapperHeight;
      display.lastWrapWidth = update.wrapperWidth;
      startWorker(cm, 400);
    }

    display.updateLineNumbers = null;

    return true
  }

  function postUpdateDisplay(cm, update) {
    var viewport = update.viewport;

    for (var first = true;; first = false) {
      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
        // Clip forced viewport to actual scrollable area.
        if (viewport && viewport.top != null)
          { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; }
        // Updated line heights might result in the drawn area not
        // actually covering the viewport. Keep looping until it does.
        update.visible = visibleLines(cm.display, cm.doc, viewport);
        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
          { break }
      }
      if (!updateDisplayIfNeeded(cm, update)) { break }
      updateHeightsInViewport(cm);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      updateScrollbars(cm, barMeasure);
      setDocumentHeight(cm, barMeasure);
      update.force = false;
    }

    update.signal(cm, "update", cm);
    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
      update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
    }
  }

  function updateDisplaySimple(cm, viewport) {
    var update = new DisplayUpdate(cm, viewport);
    if (updateDisplayIfNeeded(cm, update)) {
      updateHeightsInViewport(cm);
      postUpdateDisplay(cm, update);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      updateScrollbars(cm, barMeasure);
      setDocumentHeight(cm, barMeasure);
      update.finish();
    }
  }

  // Sync the actual display DOM structure with display.view, removing
  // nodes for lines that are no longer in view, and creating the ones
  // that are not there yet, and updating the ones that are out of
  // date.
  function patchDisplay(cm, updateNumbersFrom, dims) {
    var display = cm.display, lineNumbers = cm.options.lineNumbers;
    var container = display.lineDiv, cur = container.firstChild;

    function rm(node) {
      var next = node.nextSibling;
      // Works around a throw-scroll bug in OS X Webkit
      if (webkit && mac && cm.display.currentWheelTarget == node)
        { node.style.display = "none"; }
      else
        { node.parentNode.removeChild(node); }
      return next
    }

    var view = display.view, lineN = display.viewFrom;
    // Loop over the elements in the view, syncing cur (the DOM nodes
    // in display.lineDiv) with the view as we go.
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
        var node = buildLineElement(cm, lineView, lineN, dims);
        container.insertBefore(node, cur);
      } else { // Already drawn
        while (cur != lineView.node) { cur = rm(cur); }
        var updateNumber = lineNumbers && updateNumbersFrom != null &&
          updateNumbersFrom <= lineN && lineView.lineNumber;
        if (lineView.changes) {
          if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false; }
          updateLineForChanges(cm, lineView, lineN, dims);
        }
        if (updateNumber) {
          removeChildren(lineView.lineNumber);
          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
        }
        cur = lineView.node.nextSibling;
      }
      lineN += lineView.size;
    }
    while (cur) { cur = rm(cur); }
  }

  function updateGutterSpace(cm) {
    var width = cm.display.gutters.offsetWidth;
    cm.display.sizer.style.marginLeft = width + "px";
  }

  function setDocumentHeight(cm, measure) {
    cm.display.sizer.style.minHeight = measure.docHeight + "px";
    cm.display.heightForcer.style.top = measure.docHeight + "px";
    cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px";
  }

  // Rebuild the gutter elements, ensure the margin to the left of the
  // code matches their width.
  function updateGutters(cm) {
    var gutters = cm.display.gutters, specs = cm.options.gutters;
    removeChildren(gutters);
    var i = 0;
    for (; i < specs.length; ++i) {
      var gutterClass = specs[i];
      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
      if (gutterClass == "CodeMirror-linenumbers") {
        cm.display.lineGutter = gElt;
        gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
      }
    }
    gutters.style.display = i ? "" : "none";
    updateGutterSpace(cm);
  }

  // Make sure the gutters options contains the element
  // "CodeMirror-linenumbers" when the lineNumbers option is true.
  function setGuttersForLineNumbers(options) {
    var found = indexOf(options.gutters, "CodeMirror-linenumbers");
    if (found == -1 && options.lineNumbers) {
      options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
    } else if (found > -1 && !options.lineNumbers) {
      options.gutters = options.gutters.slice(0);
      options.gutters.splice(found, 1);
    }
  }

  // Since the delta values reported on mouse wheel events are
  // unstandardized between browsers and even browser versions, and
  // generally horribly unpredictable, this code starts by measuring
  // the scroll effect that the first few mouse wheel events have,
  // and, from that, detects the way it can convert deltas to pixel
  // offsets afterwards.
  //
  // The reason we want to know the amount a wheel event will scroll
  // is that it gives us a chance to update the display before the
  // actual scrolling happens, reducing flickering.

  var wheelSamples = 0, wheelPixelsPerUnit = null;
  // Fill in a browser-detected starting value on browsers where we
  // know one. These don't have to be accurate -- the result of them
  // being wrong would just be a slight flicker on the first wheel
  // scroll (if it is large enough).
  if (ie) { wheelPixelsPerUnit = -.53; }
  else if (gecko) { wheelPixelsPerUnit = 15; }
  else if (chrome) { wheelPixelsPerUnit = -.7; }
  else if (safari) { wheelPixelsPerUnit = -1/3; }

  function wheelEventDelta(e) {
    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; }
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; }
    else if (dy == null) { dy = e.wheelDelta; }
    return {x: dx, y: dy}
  }
  function wheelEventPixels(e) {
    var delta = wheelEventDelta(e);
    delta.x *= wheelPixelsPerUnit;
    delta.y *= wheelPixelsPerUnit;
    return delta
  }

  function onScrollWheel(cm, e) {
    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here
    var canScrollX = scroll.scrollWidth > scroll.clientWidth;
    var canScrollY = scroll.scrollHeight > scroll.clientHeight;
    if (!(dx && canScrollX || dy && canScrollY)) { return }

    // Webkit browsers on OS X abort momentum scrolls when the target
    // of the scroll event is removed from the scrollable element.
    // This hack (see related code in patchDisplay) makes sure the
    // element is kept around.
    if (dy && mac && webkit) {
      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
        for (var i = 0; i < view.length; i++) {
          if (view[i].node == cur) {
            cm.display.currentWheelTarget = cur;
            break outer
          }
        }
      }
    }

    // On some browsers, horizontal scrolling will cause redraws to
    // happen before the gutter has been realigned, causing it to
    // wriggle around in a most unseemly way. When we have an
    // estimated pixels/delta value, we just handle horizontal
    // scrolling entirely here. It'll be slightly off from native, but
    // better than glitching out.
    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
      if (dy && canScrollY)
        { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)); }
      setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit));
      // Only prevent default scrolling if vertical scrolling is
      // actually possible. Otherwise, it causes vertical scroll
      // jitter on OSX trackpads when deltaX is small and deltaY
      // is large (issue #3579)
      if (!dy || (dy && canScrollY))
        { e_preventDefault(e); }
      display.wheelStartX = null; // Abort measurement, if in progress
      return
    }

    // 'Project' the visible viewport to cover the area that is being
    // scrolled into view (if we know enough to estimate it).
    if (dy && wheelPixelsPerUnit != null) {
      var pixels = dy * wheelPixelsPerUnit;
      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) { top = Math.max(0, top + pixels - 50); }
      else { bot = Math.min(cm.doc.height, bot + pixels + 50); }
      updateDisplaySimple(cm, {top: top, bottom: bot});
    }

    if (wheelSamples < 20) {
      if (display.wheelStartX == null) {
        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
        display.wheelDX = dx; display.wheelDY = dy;
        setTimeout(function () {
          if (display.wheelStartX == null) { return }
          var movedX = scroll.scrollLeft - display.wheelStartX;
          var movedY = scroll.scrollTop - display.wheelStartY;
          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
            (movedX && display.wheelDX && movedX / display.wheelDX);
          display.wheelStartX = display.wheelStartY = null;
          if (!sample) { return }
          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
          ++wheelSamples;
        }, 200);
      } else {
        display.wheelDX += dx; display.wheelDY += dy;
      }
    }
  }

  // Selection objects are immutable. A new one is created every time
  // the selection changes. A selection is one or more non-overlapping
  // (and non-touching) ranges, sorted, and an integer that indicates
  // which one is the primary selection (the one that's scrolled into
  // view, that getCursor returns, etc).
  var Selection = function(ranges, primIndex) {
    this.ranges = ranges;
    this.primIndex = primIndex;
  };

  Selection.prototype.primary = function () { return this.ranges[this.primIndex] };

  Selection.prototype.equals = function (other) {
      var this$1 = this;

    if (other == this) { return true }
    if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }
    for (var i = 0; i < this.ranges.length; i++) {
      var here = this$1.ranges[i], there = other.ranges[i];
      if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }
    }
    return true
  };

  Selection.prototype.deepCopy = function () {
      var this$1 = this;

    var out = [];
    for (var i = 0; i < this.ranges.length; i++)
      { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)); }
    return new Selection(out, this.primIndex)
  };

  Selection.prototype.somethingSelected = function () {
      var this$1 = this;

    for (var i = 0; i < this.ranges.length; i++)
      { if (!this$1.ranges[i].empty()) { return true } }
    return false
  };

  Selection.prototype.contains = function (pos, end) {
      var this$1 = this;

    if (!end) { end = pos; }
    for (var i = 0; i < this.ranges.length; i++) {
      var range = this$1.ranges[i];
      if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
        { return i }
    }
    return -1
  };

  var Range = function(anchor, head) {
    this.anchor = anchor; this.head = head;
  };

  Range.prototype.from = function () { return minPos(this.anchor, this.head) };
  Range.prototype.to = function () { return maxPos(this.anchor, this.head) };
  Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };

  // Take an unsorted, potentially overlapping set of ranges, and
  // build a selection out of it. 'Consumes' ranges array (modifying
  // it).
  function normalizeSelection(cm, ranges, primIndex) {
    var mayTouch = cm && cm.options.selectionsMayTouch;
    var prim = ranges[primIndex];
    ranges.sort(function (a, b) { return cmp(a.from(), b.from()); });
    primIndex = indexOf(ranges, prim);
    for (var i = 1; i < ranges.length; i++) {
      var cur = ranges[i], prev = ranges[i - 1];
      var diff = cmp(prev.to(), cur.from());
      if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) {
        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
        if (i <= primIndex) { --primIndex; }
        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
      }
    }
    return new Selection(ranges, primIndex)
  }

  function simpleSelection(anchor, head) {
    return new Selection([new Range(anchor, head || anchor)], 0)
  }

  // Compute the position of the end of a change (its 'to' property
  // refers to the pre-change end).
  function changeEnd(change) {
    if (!change.text) { return change.to }
    return Pos(change.from.line + change.text.length - 1,
               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))
  }

  // Adjust a position to refer to the post-change position of the
  // same text, or the end of the change if the change covers it.
  function adjustForChange(pos, change) {
    if (cmp(pos, change.from) < 0) { return pos }
    if (cmp(pos, change.to) <= 0) { return changeEnd(change) }

    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
    if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; }
    return Pos(line, ch)
  }

  function computeSelAfterChange(doc, change) {
    var out = [];
    for (var i = 0; i < doc.sel.ranges.length; i++) {
      var range = doc.sel.ranges[i];
      out.push(new Range(adjustForChange(range.anchor, change),
                         adjustForChange(range.head, change)));
    }
    return normalizeSelection(doc.cm, out, doc.sel.primIndex)
  }

  function offsetPos(pos, old, nw) {
    if (pos.line == old.line)
      { return Pos(nw.line, pos.ch - old.ch + nw.ch) }
    else
      { return Pos(nw.line + (pos.line - old.line), pos.ch) }
  }

  // Used by replaceSelections to allow moving the selection to the
  // start or around the replaced test. Hint may be "start" or "around".
  function computeReplacedSel(doc, changes, hint) {
    var out = [];
    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
    for (var i = 0; i < changes.length; i++) {
      var change = changes[i];
      var from = offsetPos(change.from, oldPrev, newPrev);
      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
      oldPrev = change.to;
      newPrev = to;
      if (hint == "around") {
        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
        out[i] = new Range(inv ? to : from, inv ? from : to);
      } else {
        out[i] = new Range(from, from);
      }
    }
    return new Selection(out, doc.sel.primIndex)
  }

  // Used to get the editor into a consistent state again when options change.

  function loadMode(cm) {
    cm.doc.mode = getMode(cm.options, cm.doc.modeOption);
    resetModeState(cm);
  }

  function resetModeState(cm) {
    cm.doc.iter(function (line) {
      if (line.stateAfter) { line.stateAfter = null; }
      if (line.styles) { line.styles = null; }
    });
    cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first;
    startWorker(cm, 100);
    cm.state.modeGen++;
    if (cm.curOp) { regChange(cm); }
  }

  // DOCUMENT DATA STRUCTURE

  // By default, updates that start and end at the beginning of a line
  // are treated specially, in order to make the association of line
  // widgets and marker elements with the text behave more intuitive.
  function isWholeLineUpdate(doc, change) {
    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
      (!doc.cm || doc.cm.options.wholeLineUpdateBefore)
  }

  // Perform a change on the document data structure.
  function updateDoc(doc, change, markedSpans, estimateHeight$$1) {
    function spansFor(n) {return markedSpans ? markedSpans[n] : null}
    function update(line, text, spans) {
      updateLine(line, text, spans, estimateHeight$$1);
      signalLater(line, "change", line, change);
    }
    function linesFor(start, end) {
      var result = [];
      for (var i = start; i < end; ++i)
        { result.push(new Line(text[i], spansFor(i), estimateHeight$$1)); }
      return result
    }

    var from = change.from, to = change.to, text = change.text;
    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;

    // Adjust the line structure
    if (change.full) {
      doc.insert(0, linesFor(0, text.length));
      doc.remove(text.length, doc.size - text.length);
    } else if (isWholeLineUpdate(doc, change)) {
      // This is a whole-line replace. Treated specially to make
      // sure line objects move the way they are supposed to.
      var added = linesFor(0, text.length - 1);
      update(lastLine, lastLine.text, lastSpans);
      if (nlines) { doc.remove(from.line, nlines); }
      if (added.length) { doc.insert(from.line, added); }
    } else if (firstLine == lastLine) {
      if (text.length == 1) {
        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
      } else {
        var added$1 = linesFor(1, text.length - 1);
        added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight$$1));
        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
        doc.insert(from.line + 1, added$1);
      }
    } else if (text.length == 1) {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
      doc.remove(from.line + 1, nlines);
    } else {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
      var added$2 = linesFor(1, text.length - 1);
      if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); }
      doc.insert(from.line + 1, added$2);
    }

    signalLater(doc, "change", doc, change);
  }

  // Call f for all linked documents.
  function linkedDocs(doc, f, sharedHistOnly) {
    function propagate(doc, skip, sharedHist) {
      if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {
        var rel = doc.linked[i];
        if (rel.doc == skip) { continue }
        var shared = sharedHist && rel.sharedHist;
        if (sharedHistOnly && !shared) { continue }
        f(rel.doc, shared);
        propagate(rel.doc, doc, shared);
      } }
    }
    propagate(doc, null, true);
  }

  // Attach a document to an editor.
  function attachDoc(cm, doc) {
    if (doc.cm) { throw new Error("This document is already in use.") }
    cm.doc = doc;
    doc.cm = cm;
    estimateLineHeights(cm);
    loadMode(cm);
    setDirectionClass(cm);
    if (!cm.options.lineWrapping) { findMaxLine(cm); }
    cm.options.mode = doc.modeOption;
    regChange(cm);
  }

  function setDirectionClass(cm) {
  (cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl");
  }

  function directionChanged(cm) {
    runInOp(cm, function () {
      setDirectionClass(cm);
      regChange(cm);
    });
  }

  function History(startGen) {
    // Arrays of change events and selections. Doing something adds an
    // event to done and clears undo. Undoing moves events from done
    // to undone, redoing moves them in the other direction.
    this.done = []; this.undone = [];
    this.undoDepth = Infinity;
    // Used to track when changes can be merged into a single undo
    // event
    this.lastModTime = this.lastSelTime = 0;
    this.lastOp = this.lastSelOp = null;
    this.lastOrigin = this.lastSelOrigin = null;
    // Used by the isClean() method
    this.generation = this.maxGeneration = startGen || 1;
  }

  // Create a history change event from an updateDoc-style change
  // object.
  function historyChangeFromChange(doc, change) {
    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
    linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true);
    return histChange
  }

  // Pop all selection events off the end of a history array. Stop at
  // a change event.
  function clearSelectionEvents(array) {
    while (array.length) {
      var last = lst(array);
      if (last.ranges) { array.pop(); }
      else { break }
    }
  }

  // Find the top change event in the history. Pop off selection
  // events that are in the way.
  function lastChangeEvent(hist, force) {
    if (force) {
      clearSelectionEvents(hist.done);
      return lst(hist.done)
    } else if (hist.done.length && !lst(hist.done).ranges) {
      return lst(hist.done)
    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
      hist.done.pop();
      return lst(hist.done)
    }
  }

  // Register a change in the history. Merges changes that are within
  // a single operation, or are close together with an origin that
  // allows merging (starting with "+") into a single event.
  function addChangeToHistory(doc, change, selAfter, opId) {
    var hist = doc.history;
    hist.undone.length = 0;
    var time = +new Date, cur;
    var last;

    if ((hist.lastOp == opId ||
         hist.lastOrigin == change.origin && change.origin &&
         ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||
          change.origin.charAt(0) == "*")) &&
        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
      // Merge this change into the last event
      last = lst(cur.changes);
      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
        // Optimized case for simple insertion -- don't want to add
        // new changesets for every character typed
        last.to = changeEnd(change);
      } else {
        // Add new sub-event
        cur.changes.push(historyChangeFromChange(doc, change));
      }
    } else {
      // Can not be merged, start a new event.
      var before = lst(hist.done);
      if (!before || !before.ranges)
        { pushSelectionToHistory(doc.sel, hist.done); }
      cur = {changes: [historyChangeFromChange(doc, change)],
             generation: hist.generation};
      hist.done.push(cur);
      while (hist.done.length > hist.undoDepth) {
        hist.done.shift();
        if (!hist.done[0].ranges) { hist.done.shift(); }
      }
    }
    hist.done.push(selAfter);
    hist.generation = ++hist.maxGeneration;
    hist.lastModTime = hist.lastSelTime = time;
    hist.lastOp = hist.lastSelOp = opId;
    hist.lastOrigin = hist.lastSelOrigin = change.origin;

    if (!last) { signal(doc, "historyAdded"); }
  }

  function selectionEventCanBeMerged(doc, origin, prev, sel) {
    var ch = origin.charAt(0);
    return ch == "*" ||
      ch == "+" &&
      prev.ranges.length == sel.ranges.length &&
      prev.somethingSelected() == sel.somethingSelected() &&
      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)
  }

  // Called whenever the selection changes, sets the new selection as
  // the pending selection in the history, and pushes the old pending
  // selection into the 'done' array when it was significantly
  // different (in number of selected ranges, emptiness, or time).
  function addSelectionToHistory(doc, sel, opId, options) {
    var hist = doc.history, origin = options && options.origin;

    // A new event is started when the previous origin does not match
    // the current, or the origins don't allow matching. Origins
    // starting with * are always merged, those starting with + are
    // merged when similar and close together in time.
    if (opId == hist.lastSelOp ||
        (origin && hist.lastSelOrigin == origin &&
         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
      { hist.done[hist.done.length - 1] = sel; }
    else
      { pushSelectionToHistory(sel, hist.done); }

    hist.lastSelTime = +new Date;
    hist.lastSelOrigin = origin;
    hist.lastSelOp = opId;
    if (options && options.clearRedo !== false)
      { clearSelectionEvents(hist.undone); }
  }

  function pushSelectionToHistory(sel, dest) {
    var top = lst(dest);
    if (!(top && top.ranges && top.equals(sel)))
      { dest.push(sel); }
  }

  // Used to store marked span information in the history.
  function attachLocalSpans(doc, change, from, to) {
    var existing = change["spans_" + doc.id], n = 0;
    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {
      if (line.markedSpans)
        { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; }
      ++n;
    });
  }

  // When un/re-doing restores text containing marked spans, those
  // that have been explicitly cleared should not be restored.
  function removeClearedSpans(spans) {
    if (!spans) { return null }
    var out;
    for (var i = 0; i < spans.length; ++i) {
      if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } }
      else if (out) { out.push(spans[i]); }
    }
    return !out ? spans : out.length ? out : null
  }

  // Retrieve and filter the old marked spans stored in a change event.
  function getOldSpans(doc, change) {
    var found = change["spans_" + doc.id];
    if (!found) { return null }
    var nw = [];
    for (var i = 0; i < change.text.length; ++i)
      { nw.push(removeClearedSpans(found[i])); }
    return nw
  }

  // Used for un/re-doing changes from the history. Combines the
  // result of computing the existing spans with the set of spans that
  // existed in the history (so that deleting around a span and then
  // undoing brings back the span).
  function mergeOldSpans(doc, change) {
    var old = getOldSpans(doc, change);
    var stretched = stretchSpansOverChange(doc, change);
    if (!old) { return stretched }
    if (!stretched) { return old }

    for (var i = 0; i < old.length; ++i) {
      var oldCur = old[i], stretchCur = stretched[i];
      if (oldCur && stretchCur) {
        spans: for (var j = 0; j < stretchCur.length; ++j) {
          var span = stretchCur[j];
          for (var k = 0; k < oldCur.length; ++k)
            { if (oldCur[k].marker == span.marker) { continue spans } }
          oldCur.push(span);
        }
      } else if (stretchCur) {
        old[i] = stretchCur;
      }
    }
    return old
  }

  // Used both to provide a JSON-safe object in .getHistory, and, when
  // detaching a document, to split the history in two
  function copyHistoryArray(events, newGroup, instantiateSel) {
    var copy = [];
    for (var i = 0; i < events.length; ++i) {
      var event = events[i];
      if (event.ranges) {
        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
        continue
      }
      var changes = event.changes, newChanges = [];
      copy.push({changes: newChanges});
      for (var j = 0; j < changes.length; ++j) {
        var change = changes[j], m = (void 0);
        newChanges.push({from: change.from, to: change.to, text: change.text});
        if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) {
          if (indexOf(newGroup, Number(m[1])) > -1) {
            lst(newChanges)[prop] = change[prop];
            delete change[prop];
          }
        } } }
      }
    }
    return copy
  }

  // The 'scroll' parameter given to many of these indicated whether
  // the new cursor position should be scrolled into view after
  // modifying the selection.

  // If shift is held or the extend flag is set, extends a range to
  // include a given position (and optionally a second position).
  // Otherwise, simply returns the range between the given positions.
  // Used for cursor motion and such.
  function extendRange(range, head, other, extend) {
    if (extend) {
      var anchor = range.anchor;
      if (other) {
        var posBefore = cmp(head, anchor) < 0;
        if (posBefore != (cmp(other, anchor) < 0)) {
          anchor = head;
          head = other;
        } else if (posBefore != (cmp(head, other) < 0)) {
          head = other;
        }
      }
      return new Range(anchor, head)
    } else {
      return new Range(other || head, head)
    }
  }

  // Extend the primary selection range, discard the rest.
  function extendSelection(doc, head, other, options, extend) {
    if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); }
    setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options);
  }

  // Extend all selections (pos is an array of selections with length
  // equal the number of selections)
  function extendSelections(doc, heads, options) {
    var out = [];
    var extend = doc.cm && (doc.cm.display.shift || doc.extend);
    for (var i = 0; i < doc.sel.ranges.length; i++)
      { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); }
    var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex);
    setSelection(doc, newSel, options);
  }

  // Updates a single range in the selection.
  function replaceOneSelection(doc, i, range, options) {
    var ranges = doc.sel.ranges.slice(0);
    ranges[i] = range;
    setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options);
  }

  // Reset the selection to a single range.
  function setSimpleSelection(doc, anchor, head, options) {
    setSelection(doc, simpleSelection(anchor, head), options);
  }

  // Give beforeSelectionChange handlers a change to influence a
  // selection update.
  function filterSelectionChange(doc, sel, options) {
    var obj = {
      ranges: sel.ranges,
      update: function(ranges) {
        var this$1 = this;

        this.ranges = [];
        for (var i = 0; i < ranges.length; i++)
          { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
                                     clipPos(doc, ranges[i].head)); }
      },
      origin: options && options.origin
    };
    signal(doc, "beforeSelectionChange", doc, obj);
    if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj); }
    if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) }
    else { return sel }
  }

  function setSelectionReplaceHistory(doc, sel, options) {
    var done = doc.history.done, last = lst(done);
    if (last && last.ranges) {
      done[done.length - 1] = sel;
      setSelectionNoUndo(doc, sel, options);
    } else {
      setSelection(doc, sel, options);
    }
  }

  // Set a new selection.
  function setSelection(doc, sel, options) {
    setSelectionNoUndo(doc, sel, options);
    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
  }

  function setSelectionNoUndo(doc, sel, options) {
    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
      { sel = filterSelectionChange(doc, sel, options); }

    var bias = options && options.bias ||
      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));

    if (!(options && options.scroll === false) && doc.cm)
      { ensureCursorVisible(doc.cm); }
  }

  function setSelectionInner(doc, sel) {
    if (sel.equals(doc.sel)) { return }

    doc.sel = sel;

    if (doc.cm) {
      doc.cm.curOp.updateInput = 1;
      doc.cm.curOp.selectionChanged = true;
      signalCursorActivity(doc.cm);
    }
    signalLater(doc, "cursorActivity", doc);
  }

  // Verify that the selection does not partially select any atomic
  // marked ranges.
  function reCheckSelection(doc) {
    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false));
  }

  // Return a selection that does not partially select any atomic
  // ranges.
  function skipAtomicInSelection(doc, sel, bias, mayClear) {
    var out;
    for (var i = 0; i < sel.ranges.length; i++) {
      var range = sel.ranges[i];
      var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];
      var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);
      var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear);
      if (out || newAnchor != range.anchor || newHead != range.head) {
        if (!out) { out = sel.ranges.slice(0, i); }
        out[i] = new Range(newAnchor, newHead);
      }
    }
    return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel
  }

  function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
    var line = getLine(doc, pos.line);
    if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
      var sp = line.markedSpans[i], m = sp.marker;
      if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
          (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
        if (mayClear) {
          signal(m, "beforeCursorEnter");
          if (m.explicitlyCleared) {
            if (!line.markedSpans) { break }
            else {--i; continue}
          }
        }
        if (!m.atomic) { continue }

        if (oldPos) {
          var near = m.find(dir < 0 ? 1 : -1), diff = (void 0);
          if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft)
            { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); }
          if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))
            { return skipAtomicInner(doc, near, pos, dir, mayClear) }
        }

        var far = m.find(dir < 0 ? -1 : 1);
        if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight)
          { far = movePos(doc, far, dir, far.line == pos.line ? line : null); }
        return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null
      }
    } }
    return pos
  }

  // Ensure a given position is not inside an atomic range.
  function skipAtomic(doc, pos, oldPos, bias, mayClear) {
    var dir = bias || 1;
    var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||
        (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||
        skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||
        (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));
    if (!found) {
      doc.cantEdit = true;
      return Pos(doc.first, 0)
    }
    return found
  }

  function movePos(doc, pos, dir, line) {
    if (dir < 0 && pos.ch == 0) {
      if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }
      else { return null }
    } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {
      if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }
      else { return null }
    } else {
      return new Pos(pos.line, pos.ch + dir)
    }
  }

  function selectAll(cm) {
    cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);
  }

  // UPDATING

  // Allow "beforeChange" event handlers to influence a change
  function filterChange(doc, change, update) {
    var obj = {
      canceled: false,
      from: change.from,
      to: change.to,
      text: change.text,
      origin: change.origin,
      cancel: function () { return obj.canceled = true; }
    };
    if (update) { obj.update = function (from, to, text, origin) {
      if (from) { obj.from = clipPos(doc, from); }
      if (to) { obj.to = clipPos(doc, to); }
      if (text) { obj.text = text; }
      if (origin !== undefined) { obj.origin = origin; }
    }; }
    signal(doc, "beforeChange", doc, obj);
    if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj); }

    if (obj.canceled) {
      if (doc.cm) { doc.cm.curOp.updateInput = 2; }
      return null
    }
    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}
  }

  // Apply a change to a document, and add it to the document's
  // history, and propagating it to all linked documents.
  function makeChange(doc, change, ignoreReadOnly) {
    if (doc.cm) {
      if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }
      if (doc.cm.state.suppressEdits) { return }
    }

    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
      change = filterChange(doc, change, true);
      if (!change) { return }
    }

    // Possibly split or suppress the update based on the presence
    // of read-only spans in its range.
    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
    if (split) {
      for (var i = split.length - 1; i >= 0; --i)
        { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}); }
    } else {
      makeChangeInner(doc, change);
    }
  }

  function makeChangeInner(doc, change) {
    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return }
    var selAfter = computeSelAfterChange(doc, change);
    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);

    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
    var rebased = [];

    linkedDocs(doc, function (doc, sharedHist) {
      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
        rebaseHist(doc.history, change);
        rebased.push(doc.history);
      }
      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
    });
  }

  // Revert a change stored in a document's history.
  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
    var suppress = doc.cm && doc.cm.state.suppressEdits;
    if (suppress && !allowSelectionOnly) { return }

    var hist = doc.history, event, selAfter = doc.sel;
    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;

    // Verify that there is a useable event (so that ctrl-z won't
    // needlessly clear selection events)
    var i = 0;
    for (; i < source.length; i++) {
      event = source[i];
      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
        { break }
    }
    if (i == source.length) { return }
    hist.lastOrigin = hist.lastSelOrigin = null;

    for (;;) {
      event = source.pop();
      if (event.ranges) {
        pushSelectionToHistory(event, dest);
        if (allowSelectionOnly && !event.equals(doc.sel)) {
          setSelection(doc, event, {clearRedo: false});
          return
        }
        selAfter = event;
      } else if (suppress) {
        source.push(event);
        return
      } else { break }
    }

    // Build up a reverse change object to add to the opposite history
    // stack (redo when undoing, and vice versa).
    var antiChanges = [];
    pushSelectionToHistory(selAfter, dest);
    dest.push({changes: antiChanges, generation: hist.generation});
    hist.generation = event.generation || ++hist.maxGeneration;

    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");

    var loop = function ( i ) {
      var change = event.changes[i];
      change.origin = type;
      if (filter && !filterChange(doc, change, false)) {
        source.length = 0;
        return {}
      }

      antiChanges.push(historyChangeFromChange(doc, change));

      var after = i ? computeSelAfterChange(doc, change) : lst(source);
      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
      if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); }
      var rebased = [];

      // Propagate to the linked documents
      linkedDocs(doc, function (doc, sharedHist) {
        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
          rebaseHist(doc.history, change);
          rebased.push(doc.history);
        }
        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
      });
    };

    for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {
      var returned = loop( i$1 );

      if ( returned ) return returned.v;
    }
  }

  // Sub-views need their line numbers shifted when text is added
  // above or below them in the parent document.
  function shiftDoc(doc, distance) {
    if (distance == 0) { return }
    doc.first += distance;
    doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(
      Pos(range.anchor.line + distance, range.anchor.ch),
      Pos(range.head.line + distance, range.head.ch)
    ); }), doc.sel.primIndex);
    if (doc.cm) {
      regChange(doc.cm, doc.first, doc.first - distance, distance);
      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
        { regLineChange(doc.cm, l, "gutter"); }
    }
  }

  // More lower-level change function, handling only a single document
  // (not linked ones).
  function makeChangeSingleDoc(doc, change, selAfter, spans) {
    if (doc.cm && !doc.cm.curOp)
      { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }

    if (change.to.line < doc.first) {
      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
      return
    }
    if (change.from.line > doc.lastLine()) { return }

    // Clip the change to the size of this doc
    if (change.from.line < doc.first) {
      var shift = change.text.length - 1 - (doc.first - change.from.line);
      shiftDoc(doc, shift);
      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
                text: [lst(change.text)], origin: change.origin};
    }
    var last = doc.lastLine();
    if (change.to.line > last) {
      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
                text: [change.text[0]], origin: change.origin};
    }

    change.removed = getBetween(doc, change.from, change.to);

    if (!selAfter) { selAfter = computeSelAfterChange(doc, change); }
    if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); }
    else { updateDoc(doc, change, spans); }
    setSelectionNoUndo(doc, selAfter, sel_dontScroll);
  }

  // Handle the interaction of a change to a document with the editor
  // that this document is part of.
  function makeChangeSingleDocInEditor(cm, change, spans) {
    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;

    var recomputeMaxLength = false, checkWidthStart = from.line;
    if (!cm.options.lineWrapping) {
      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
      doc.iter(checkWidthStart, to.line + 1, function (line) {
        if (line == display.maxLine) {
          recomputeMaxLength = true;
          return true
        }
      });
    }

    if (doc.sel.contains(change.from, change.to) > -1)
      { signalCursorActivity(cm); }

    updateDoc(doc, change, spans, estimateHeight(cm));

    if (!cm.options.lineWrapping) {
      doc.iter(checkWidthStart, from.line + change.text.length, function (line) {
        var len = lineLength(line);
        if (len > display.maxLineLength) {
          display.maxLine = line;
          display.maxLineLength = len;
          display.maxLineChanged = true;
          recomputeMaxLength = false;
        }
      });
      if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; }
    }

    retreatFrontier(doc, from.line);
    startWorker(cm, 400);

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display
    if (change.full)
      { regChange(cm); }
    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
      { regLineChange(cm, from.line, "text"); }
    else
      { regChange(cm, from.line, to.line + 1, lendiff); }

    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
    if (changeHandler || changesHandler) {
      var obj = {
        from: from, to: to,
        text: change.text,
        removed: change.removed,
        origin: change.origin
      };
      if (changeHandler) { signalLater(cm, "change", cm, obj); }
      if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); }
    }
    cm.display.selForContextMenu = null;
  }

  function replaceRange(doc, code, from, to, origin) {
    var assign;

    if (!to) { to = from; }
    if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); }
    if (typeof code == "string") { code = doc.splitLines(code); }
    makeChange(doc, {from: from, to: to, text: code, origin: origin});
  }

  // Rebasing/resetting history to deal with externally-sourced changes

  function rebaseHistSelSingle(pos, from, to, diff) {
    if (to < pos.line) {
      pos.line += diff;
    } else if (from < pos.line) {
      pos.line = from;
      pos.ch = 0;
    }
  }

  // Tries to rebase an array of history events given a change in the
  // document. If the change touches the same lines as the event, the
  // event, and everything 'behind' it, is discarded. If the change is
  // before the event, the event's positions are updated. Uses a
  // copy-on-write scheme for the positions, to avoid having to
  // reallocate them all on every rebase, but also avoid problems with
  // shared position objects being unsafely updated.
  function rebaseHistArray(array, from, to, diff) {
    for (var i = 0; i < array.length; ++i) {
      var sub = array[i], ok = true;
      if (sub.ranges) {
        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
        for (var j = 0; j < sub.ranges.length; j++) {
          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
        }
        continue
      }
      for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {
        var cur = sub.changes[j$1];
        if (to < cur.from.line) {
          cur.from = Pos(cur.from.line + diff, cur.from.ch);
          cur.to = Pos(cur.to.line + diff, cur.to.ch);
        } else if (from <= cur.to.line) {
          ok = false;
          break
        }
      }
      if (!ok) {
        array.splice(0, i + 1);
        i = 0;
      }
    }
  }

  function rebaseHist(hist, change) {
    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
    rebaseHistArray(hist.done, from, to, diff);
    rebaseHistArray(hist.undone, from, to, diff);
  }

  // Utility for applying a change to a line by handle or number,
  // returning the number and optionally registering the line as
  // changed.
  function changeLine(doc, handle, changeType, op) {
    var no = handle, line = handle;
    if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)); }
    else { no = lineNo(handle); }
    if (no == null) { return null }
    if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); }
    return line
  }

  // The document is represented as a BTree consisting of leaves, with
  // chunk of lines in them, and branches, with up to ten leaves or
  // other branch nodes below them. The top node is always a branch
  // node, and is the document object itself (meaning it has
  // additional methods and properties).
  //
  // All nodes have parent links. The tree is used both to go from
  // line numbers to line objects, and to go from objects to numbers.
  // It also indexes by height, and is used to convert between height
  // and line object, and to find the total height of the document.
  //
  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html

  function LeafChunk(lines) {
    var this$1 = this;

    this.lines = lines;
    this.parent = null;
    var height = 0;
    for (var i = 0; i < lines.length; ++i) {
      lines[i].parent = this$1;
      height += lines[i].height;
    }
    this.height = height;
  }

  LeafChunk.prototype = {
    chunkSize: function() { return this.lines.length },

    // Remove the n lines at offset 'at'.
    removeInner: function(at, n) {
      var this$1 = this;

      for (var i = at, e = at + n; i < e; ++i) {
        var line = this$1.lines[i];
        this$1.height -= line.height;
        cleanUpLine(line);
        signalLater(line, "delete");
      }
      this.lines.splice(at, n);
    },

    // Helper used to collapse a small branch into a single leaf.
    collapse: function(lines) {
      lines.push.apply(lines, this.lines);
    },

    // Insert the given array of lines at offset 'at', count them as
    // having the given height.
    insertInner: function(at, lines, height) {
      var this$1 = this;

      this.height += height;
      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
      for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1; }
    },

    // Used to iterate over a part of the tree.
    iterN: function(at, n, op) {
      var this$1 = this;

      for (var e = at + n; at < e; ++at)
        { if (op(this$1.lines[at])) { return true } }
    }
  };

  function BranchChunk(children) {
    var this$1 = this;

    this.children = children;
    var size = 0, height = 0;
    for (var i = 0; i < children.length; ++i) {
      var ch = children[i];
      size += ch.chunkSize(); height += ch.height;
      ch.parent = this$1;
    }
    this.size = size;
    this.height = height;
    this.parent = null;
  }

  BranchChunk.prototype = {
    chunkSize: function() { return this.size },

    removeInner: function(at, n) {
      var this$1 = this;

      this.size -= n;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this$1.children[i], sz = child.chunkSize();
        if (at < sz) {
          var rm = Math.min(n, sz - at), oldHeight = child.height;
          child.removeInner(at, rm);
          this$1.height -= oldHeight - child.height;
          if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null; }
          if ((n -= rm) == 0) { break }
          at = 0;
        } else { at -= sz; }
      }
      // If the result is smaller than 25 lines, ensure that it is a
      // single leaf node.
      if (this.size - n < 25 &&
          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
        var lines = [];
        this.collapse(lines);
        this.children = [new LeafChunk(lines)];
        this.children[0].parent = this;
      }
    },

    collapse: function(lines) {
      var this$1 = this;

      for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines); }
    },

    insertInner: function(at, lines, height) {
      var this$1 = this;

      this.size += lines.length;
      this.height += height;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this$1.children[i], sz = child.chunkSize();
        if (at <= sz) {
          child.insertInner(at, lines, height);
          if (child.lines && child.lines.length > 50) {
            // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.
            // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.
            var remaining = child.lines.length % 25 + 25;
            for (var pos = remaining; pos < child.lines.length;) {
              var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));
              child.height -= leaf.height;
              this$1.children.splice(++i, 0, leaf);
              leaf.parent = this$1;
            }
            child.lines = child.lines.slice(0, remaining);
            this$1.maybeSpill();
          }
          break
        }
        at -= sz;
      }
    },

    // When a node has grown, check whether it should be split.
    maybeSpill: function() {
      if (this.children.length <= 10) { return }
      var me = this;
      do {
        var spilled = me.children.splice(me.children.length - 5, 5);
        var sibling = new BranchChunk(spilled);
        if (!me.parent) { // Become the parent node
          var copy = new BranchChunk(me.children);
          copy.parent = me;
          me.children = [copy, sibling];
          me = copy;
       } else {
          me.size -= sibling.size;
          me.height -= sibling.height;
          var myIndex = indexOf(me.parent.children, me);
          me.parent.children.splice(myIndex + 1, 0, sibling);
        }
        sibling.parent = me.parent;
      } while (me.children.length > 10)
      me.parent.maybeSpill();
    },

    iterN: function(at, n, op) {
      var this$1 = this;

      for (var i = 0; i < this.children.length; ++i) {
        var child = this$1.children[i], sz = child.chunkSize();
        if (at < sz) {
          var used = Math.min(n, sz - at);
          if (child.iterN(at, used, op)) { return true }
          if ((n -= used) == 0) { break }
          at = 0;
        } else { at -= sz; }
      }
    }
  };

  // Line widgets are block elements displayed above or below a line.

  var LineWidget = function(doc, node, options) {
    var this$1 = this;

    if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))
      { this$1[opt] = options[opt]; } } }
    this.doc = doc;
    this.node = node;
  };

  LineWidget.prototype.clear = function () {
      var this$1 = this;

    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
    if (no == null || !ws) { return }
    for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1); } }
    if (!ws.length) { line.widgets = null; }
    var height = widgetHeight(this);
    updateLineHeight(line, Math.max(0, line.height - height));
    if (cm) {
      runInOp(cm, function () {
        adjustScrollWhenAboveVisible(cm, line, -height);
        regLineChange(cm, no, "widget");
      });
      signalLater(cm, "lineWidgetCleared", cm, this, no);
    }
  };

  LineWidget.prototype.changed = function () {
      var this$1 = this;

    var oldH = this.height, cm = this.doc.cm, line = this.line;
    this.height = null;
    var diff = widgetHeight(this) - oldH;
    if (!diff) { return }
    if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); }
    if (cm) {
      runInOp(cm, function () {
        cm.curOp.forceUpdate = true;
        adjustScrollWhenAboveVisible(cm, line, diff);
        signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line));
      });
    }
  };
  eventMixin(LineWidget);

  function adjustScrollWhenAboveVisible(cm, line, diff) {
    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
      { addToScrollTop(cm, diff); }
  }

  function addLineWidget(doc, handle, node, options) {
    var widget = new LineWidget(doc, node, options);
    var cm = doc.cm;
    if (cm && widget.noHScroll) { cm.display.alignWidgets = true; }
    changeLine(doc, handle, "widget", function (line) {
      var widgets = line.widgets || (line.widgets = []);
      if (widget.insertAt == null) { widgets.push(widget); }
      else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); }
      widget.line = line;
      if (cm && !lineIsHidden(doc, line)) {
        var aboveVisible = heightAtLine(line) < doc.scrollTop;
        updateLineHeight(line, line.height + widgetHeight(widget));
        if (aboveVisible) { addToScrollTop(cm, widget.height); }
        cm.curOp.forceUpdate = true;
      }
      return true
    });
    if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)); }
    return widget
  }

  // TEXTMARKERS

  // Created with markText and setBookmark methods. A TextMarker is a
  // handle that can be used to clear or find a marked position in the
  // document. Line objects hold arrays (markedSpans) containing
  // {from, to, marker} object pointing to such marker objects, and
  // indicating that such a marker is present on that line. Multiple
  // lines may point to the same marker when it spans across lines.
  // The spans will have null for their from/to properties when the
  // marker continues beyond the start/end of the line. Markers have
  // links back to the lines they currently touch.

  // Collapsed markers have unique ids, in order to be able to order
  // them, which is needed for uniquely determining an outer marker
  // when they overlap (they may nest, but not partially overlap).
  var nextMarkerId = 0;

  var TextMarker = function(doc, type) {
    this.lines = [];
    this.type = type;
    this.doc = doc;
    this.id = ++nextMarkerId;
  };

  // Clear the marker.
  TextMarker.prototype.clear = function () {
      var this$1 = this;

    if (this.explicitlyCleared) { return }
    var cm = this.doc.cm, withOp = cm && !cm.curOp;
    if (withOp) { startOperation(cm); }
    if (hasHandler(this, "clear")) {
      var found = this.find();
      if (found) { signalLater(this, "clear", found.from, found.to); }
    }
    var min = null, max = null;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this$1.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this$1);
      if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text"); }
      else if (cm) {
        if (span.to != null) { max = lineNo(line); }
        if (span.from != null) { min = lineNo(line); }
      }
      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
      if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm)
        { updateLineHeight(line, textHeight(cm.display)); }
    }
    if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
      var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual);
      if (len > cm.display.maxLineLength) {
        cm.display.maxLine = visual;
        cm.display.maxLineLength = len;
        cm.display.maxLineChanged = true;
      }
    } }

    if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); }
    this.lines.length = 0;
    this.explicitlyCleared = true;
    if (this.atomic && this.doc.cantEdit) {
      this.doc.cantEdit = false;
      if (cm) { reCheckSelection(cm.doc); }
    }
    if (cm) { signalLater(cm, "markerCleared", cm, this, min, max); }
    if (withOp) { endOperation(cm); }
    if (this.parent) { this.parent.clear(); }
  };

  // Find the position of the marker in the document. Returns a {from,
  // to} object by default. Side can be passed to get a specific side
  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
  // Pos objects returned contain a line object, rather than a line
  // number (used to prevent looking up the same line twice).
  TextMarker.prototype.find = function (side, lineObj) {
      var this$1 = this;

    if (side == null && this.type == "bookmark") { side = 1; }
    var from, to;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this$1.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this$1);
      if (span.from != null) {
        from = Pos(lineObj ? line : lineNo(line), span.from);
        if (side == -1) { return from }
      }
      if (span.to != null) {
        to = Pos(lineObj ? line : lineNo(line), span.to);
        if (side == 1) { return to }
      }
    }
    return from && {from: from, to: to}
  };

  // Signals that the marker's widget changed, and surrounding layout
  // should be recomputed.
  TextMarker.prototype.changed = function () {
      var this$1 = this;

    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
    if (!pos || !cm) { return }
    runInOp(cm, function () {
      var line = pos.line, lineN = lineNo(pos.line);
      var view = findViewForLine(cm, lineN);
      if (view) {
        clearLineMeasurementCacheFor(view);
        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
      }
      cm.curOp.updateMaxLine = true;
      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
        var oldHeight = widget.height;
        widget.height = null;
        var dHeight = widgetHeight(widget) - oldHeight;
        if (dHeight)
          { updateLineHeight(line, line.height + dHeight); }
      }
      signalLater(cm, "markerChanged", cm, this$1);
    });
  };

  TextMarker.prototype.attachLine = function (line) {
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
        { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); }
    }
    this.lines.push(line);
  };

  TextMarker.prototype.detachLine = function (line) {
    this.lines.splice(indexOf(this.lines, line), 1);
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp
      ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
    }
  };
  eventMixin(TextMarker);

  // Create a marker, wire it up to the right lines, and
  function markText(doc, from, to, options, type) {
    // Shared markers (across linked documents) are handled separately
    // (markTextShared will call out to this again, once per
    // document).
    if (options && options.shared) { return markTextShared(doc, from, to, options, type) }
    // Ensure we are in an operation.
    if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }

    var marker = new TextMarker(doc, type), diff = cmp(from, to);
    if (options) { copyObj(options, marker, false); }
    // Don't connect empty markers unless clearWhenEmpty is false
    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
      { return marker }
    if (marker.replacedWith) {
      // Showing up as a widget implies collapsed (widget replaces text)
      marker.collapsed = true;
      marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget");
      if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true"); }
      if (options.insertLeft) { marker.widgetNode.insertLeft = true; }
    }
    if (marker.collapsed) {
      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
        { throw new Error("Inserting collapsed marker partially overlapping an existing one") }
      seeCollapsedSpans();
    }

    if (marker.addToHistory)
      { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); }

    var curLine = from.line, cm = doc.cm, updateMaxLine;
    doc.iter(curLine, to.line + 1, function (line) {
      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
        { updateMaxLine = true; }
      if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); }
      addMarkedSpan(line, new MarkedSpan(marker,
                                         curLine == from.line ? from.ch : null,
                                         curLine == to.line ? to.ch : null));
      ++curLine;
    });
    // lineIsHidden depends on the presence of the spans, so needs a second pass
    if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {
      if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); }
    }); }

    if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }); }

    if (marker.readOnly) {
      seeReadOnlySpans();
      if (doc.history.done.length || doc.history.undone.length)
        { doc.clearHistory(); }
    }
    if (marker.collapsed) {
      marker.id = ++nextMarkerId;
      marker.atomic = true;
    }
    if (cm) {
      // Sync editor state
      if (updateMaxLine) { cm.curOp.updateMaxLine = true; }
      if (marker.collapsed)
        { regChange(cm, from.line, to.line + 1); }
      else if (marker.className || marker.startStyle || marker.endStyle || marker.css ||
               marker.attributes || marker.title)
        { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text"); } }
      if (marker.atomic) { reCheckSelection(cm.doc); }
      signalLater(cm, "markerAdded", cm, marker);
    }
    return marker
  }

  // SHARED TEXTMARKERS

  // A shared marker spans multiple linked documents. It is
  // implemented as a meta-marker-object controlling multiple normal
  // markers.
  var SharedTextMarker = function(markers, primary) {
    var this$1 = this;

    this.markers = markers;
    this.primary = primary;
    for (var i = 0; i < markers.length; ++i)
      { markers[i].parent = this$1; }
  };

  SharedTextMarker.prototype.clear = function () {
      var this$1 = this;

    if (this.explicitlyCleared) { return }
    this.explicitlyCleared = true;
    for (var i = 0; i < this.markers.length; ++i)
      { this$1.markers[i].clear(); }
    signalLater(this, "clear");
  };

  SharedTextMarker.prototype.find = function (side, lineObj) {
    return this.primary.find(side, lineObj)
  };
  eventMixin(SharedTextMarker);

  function markTextShared(doc, from, to, options, type) {
    options = copyObj(options);
    options.shared = false;
    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
    var widget = options.widgetNode;
    linkedDocs(doc, function (doc) {
      if (widget) { options.widgetNode = widget.cloneNode(true); }
      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
      for (var i = 0; i < doc.linked.length; ++i)
        { if (doc.linked[i].isParent) { return } }
      primary = lst(markers);
    });
    return new SharedTextMarker(markers, primary)
  }

  function findSharedMarkers(doc) {
    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })
  }

  function copySharedMarkers(doc, markers) {
    for (var i = 0; i < markers.length; i++) {
      var marker = markers[i], pos = marker.find();
      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
      if (cmp(mFrom, mTo)) {
        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
        marker.markers.push(subMark);
        subMark.parent = marker;
      }
    }
  }

  function detachSharedMarkers(markers) {
    var loop = function ( i ) {
      var marker = markers[i], linked = [marker.primary.doc];
      linkedDocs(marker.primary.doc, function (d) { return linked.push(d); });
      for (var j = 0; j < marker.markers.length; j++) {
        var subMarker = marker.markers[j];
        if (indexOf(linked, subMarker.doc) == -1) {
          subMarker.parent = null;
          marker.markers.splice(j--, 1);
        }
      }
    };

    for (var i = 0; i < markers.length; i++) loop( i );
  }

  var nextDocId = 0;
  var Doc = function(text, mode, firstLine, lineSep, direction) {
    if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }
    if (firstLine == null) { firstLine = 0; }

    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
    this.first = firstLine;
    this.scrollTop = this.scrollLeft = 0;
    this.cantEdit = false;
    this.cleanGeneration = 1;
    this.modeFrontier = this.highlightFrontier = firstLine;
    var start = Pos(firstLine, 0);
    this.sel = simpleSelection(start);
    this.history = new History(null);
    this.id = ++nextDocId;
    this.modeOption = mode;
    this.lineSep = lineSep;
    this.direction = (direction == "rtl") ? "rtl" : "ltr";
    this.extend = false;

    if (typeof text == "string") { text = this.splitLines(text); }
    updateDoc(this, {from: start, to: start, text: text});
    setSelection(this, simpleSelection(start), sel_dontScroll);
  };

  Doc.prototype = createObj(BranchChunk.prototype, {
    constructor: Doc,
    // Iterate over the document. Supports two forms -- with only one
    // argument, it calls that for each line in the document. With
    // three, it iterates over the range given by the first two (with
    // the second being non-inclusive).
    iter: function(from, to, op) {
      if (op) { this.iterN(from - this.first, to - from, op); }
      else { this.iterN(this.first, this.first + this.size, from); }
    },

    // Non-public interface for adding and removing lines.
    insert: function(at, lines) {
      var height = 0;
      for (var i = 0; i < lines.length; ++i) { height += lines[i].height; }
      this.insertInner(at - this.first, lines, height);
    },
    remove: function(at, n) { this.removeInner(at - this.first, n); },

    // From here, the methods are part of the public interface. Most
    // are also available from CodeMirror (editor) instances.

    getValue: function(lineSep) {
      var lines = getLines(this, this.first, this.first + this.size);
      if (lineSep === false) { return lines }
      return lines.join(lineSep || this.lineSeparator())
    },
    setValue: docMethodOp(function(code) {
      var top = Pos(this.first, 0), last = this.first + this.size - 1;
      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
                        text: this.splitLines(code), origin: "setValue", full: true}, true);
      if (this.cm) { scrollToCoords(this.cm, 0, 0); }
      setSelection(this, simpleSelection(top), sel_dontScroll);
    }),
    replaceRange: function(code, from, to, origin) {
      from = clipPos(this, from);
      to = to ? clipPos(this, to) : from;
      replaceRange(this, code, from, to, origin);
    },
    getRange: function(from, to, lineSep) {
      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
      if (lineSep === false) { return lines }
      return lines.join(lineSep || this.lineSeparator())
    },

    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},

    getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},
    getLineNumber: function(line) {return lineNo(line)},

    getLineHandleVisualStart: function(line) {
      if (typeof line == "number") { line = getLine(this, line); }
      return visualLine(line)
    },

    lineCount: function() {return this.size},
    firstLine: function() {return this.first},
    lastLine: function() {return this.first + this.size - 1},

    clipPos: function(pos) {return clipPos(this, pos)},

    getCursor: function(start) {
      var range$$1 = this.sel.primary(), pos;
      if (start == null || start == "head") { pos = range$$1.head; }
      else if (start == "anchor") { pos = range$$1.anchor; }
      else if (start == "end" || start == "to" || start === false) { pos = range$$1.to(); }
      else { pos = range$$1.from(); }
      return pos
    },
    listSelections: function() { return this.sel.ranges },
    somethingSelected: function() {return this.sel.somethingSelected()},

    setCursor: docMethodOp(function(line, ch, options) {
      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
    }),
    setSelection: docMethodOp(function(anchor, head, options) {
      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
    }),
    extendSelection: docMethodOp(function(head, other, options) {
      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
    }),
    extendSelections: docMethodOp(function(heads, options) {
      extendSelections(this, clipPosArray(this, heads), options);
    }),
    extendSelectionsBy: docMethodOp(function(f, options) {
      var heads = map(this.sel.ranges, f);
      extendSelections(this, clipPosArray(this, heads), options);
    }),
    setSelections: docMethodOp(function(ranges, primary, options) {
      var this$1 = this;

      if (!ranges.length) { return }
      var out = [];
      for (var i = 0; i < ranges.length; i++)
        { out[i] = new Range(clipPos(this$1, ranges[i].anchor),
                           clipPos(this$1, ranges[i].head)); }
      if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); }
      setSelection(this, normalizeSelection(this.cm, out, primary), options);
    }),
    addSelection: docMethodOp(function(anchor, head, options) {
      var ranges = this.sel.ranges.slice(0);
      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
      setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options);
    }),

    getSelection: function(lineSep) {
      var this$1 = this;

      var ranges = this.sel.ranges, lines;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
        lines = lines ? lines.concat(sel) : sel;
      }
      if (lineSep === false) { return lines }
      else { return lines.join(lineSep || this.lineSeparator()) }
    },
    getSelections: function(lineSep) {
      var this$1 = this;

      var parts = [], ranges = this.sel.ranges;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
        if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()); }
        parts[i] = sel;
      }
      return parts
    },
    replaceSelection: function(code, collapse, origin) {
      var dup = [];
      for (var i = 0; i < this.sel.ranges.length; i++)
        { dup[i] = code; }
      this.replaceSelections(dup, collapse, origin || "+input");
    },
    replaceSelections: docMethodOp(function(code, collapse, origin) {
      var this$1 = this;

      var changes = [], sel = this.sel;
      for (var i = 0; i < sel.ranges.length; i++) {
        var range$$1 = sel.ranges[i];
        changes[i] = {from: range$$1.from(), to: range$$1.to(), text: this$1.splitLines(code[i]), origin: origin};
      }
      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
      for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)
        { makeChange(this$1, changes[i$1]); }
      if (newSel) { setSelectionReplaceHistory(this, newSel); }
      else if (this.cm) { ensureCursorVisible(this.cm); }
    }),
    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),

    setExtending: function(val) {this.extend = val;},
    getExtending: function() {return this.extend},

    historySize: function() {
      var hist = this.history, done = 0, undone = 0;
      for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } }
      for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } }
      return {undo: done, redo: undone}
    },
    clearHistory: function() {this.history = new History(this.history.maxGeneration);},

    markClean: function() {
      this.cleanGeneration = this.changeGeneration(true);
    },
    changeGeneration: function(forceSplit) {
      if (forceSplit)
        { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; }
      return this.history.generation
    },
    isClean: function (gen) {
      return this.history.generation == (gen || this.cleanGeneration)
    },

    getHistory: function() {
      return {done: copyHistoryArray(this.history.done),
              undone: copyHistoryArray(this.history.undone)}
    },
    setHistory: function(histData) {
      var hist = this.history = new History(this.history.maxGeneration);
      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
    },

    setGutterMarker: docMethodOp(function(line, gutterID, value) {
      return changeLine(this, line, "gutter", function (line) {
        var markers = line.gutterMarkers || (line.gutterMarkers = {});
        markers[gutterID] = value;
        if (!value && isEmpty(markers)) { line.gutterMarkers = null; }
        return true
      })
    }),

    clearGutter: docMethodOp(function(gutterID) {
      var this$1 = this;

      this.iter(function (line) {
        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
          changeLine(this$1, line, "gutter", function () {
            line.gutterMarkers[gutterID] = null;
            if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; }
            return true
          });
        }
      });
    }),

    lineInfo: function(line) {
      var n;
      if (typeof line == "number") {
        if (!isLine(this, line)) { return null }
        n = line;
        line = getLine(this, line);
        if (!line) { return null }
      } else {
        n = lineNo(line);
        if (n == null) { return null }
      }
      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
              widgets: line.widgets}
    },

    addLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        if (!line[prop]) { line[prop] = cls; }
        else if (classTest(cls).test(line[prop])) { return false }
        else { line[prop] += " " + cls; }
        return true
      })
    }),
    removeLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        var cur = line[prop];
        if (!cur) { return false }
        else if (cls == null) { line[prop] = null; }
        else {
          var found = cur.match(classTest(cls));
          if (!found) { return false }
          var end = found.index + found[0].length;
          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
        }
        return true
      })
    }),

    addLineWidget: docMethodOp(function(handle, node, options) {
      return addLineWidget(this, handle, node, options)
    }),
    removeLineWidget: function(widget) { widget.clear(); },

    markText: function(from, to, options) {
      return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
    },
    setBookmark: function(pos, options) {
      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
                      insertLeft: options && options.insertLeft,
                      clearWhenEmpty: false, shared: options && options.shared,
                      handleMouseEvents: options && options.handleMouseEvents};
      pos = clipPos(this, pos);
      return markText(this, pos, pos, realOpts, "bookmark")
    },
    findMarksAt: function(pos) {
      pos = clipPos(this, pos);
      var markers = [], spans = getLine(this, pos.line).markedSpans;
      if (spans) { for (var i = 0; i < spans.length; ++i) {
        var span = spans[i];
        if ((span.from == null || span.from <= pos.ch) &&
            (span.to == null || span.to >= pos.ch))
          { markers.push(span.marker.parent || span.marker); }
      } }
      return markers
    },
    findMarks: function(from, to, filter) {
      from = clipPos(this, from); to = clipPos(this, to);
      var found = [], lineNo$$1 = from.line;
      this.iter(from.line, to.line + 1, function (line) {
        var spans = line.markedSpans;
        if (spans) { for (var i = 0; i < spans.length; i++) {
          var span = spans[i];
          if (!(span.to != null && lineNo$$1 == from.line && from.ch >= span.to ||
                span.from == null && lineNo$$1 != from.line ||
                span.from != null && lineNo$$1 == to.line && span.from >= to.ch) &&
              (!filter || filter(span.marker)))
            { found.push(span.marker.parent || span.marker); }
        } }
        ++lineNo$$1;
      });
      return found
    },
    getAllMarks: function() {
      var markers = [];
      this.iter(function (line) {
        var sps = line.markedSpans;
        if (sps) { for (var i = 0; i < sps.length; ++i)
          { if (sps[i].from != null) { markers.push(sps[i].marker); } } }
      });
      return markers
    },

    posFromIndex: function(off) {
      var ch, lineNo$$1 = this.first, sepSize = this.lineSeparator().length;
      this.iter(function (line) {
        var sz = line.text.length + sepSize;
        if (sz > off) { ch = off; return true }
        off -= sz;
        ++lineNo$$1;
      });
      return clipPos(this, Pos(lineNo$$1, ch))
    },
    indexFromPos: function (coords) {
      coords = clipPos(this, coords);
      var index = coords.ch;
      if (coords.line < this.first || coords.ch < 0) { return 0 }
      var sepSize = this.lineSeparator().length;
      this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value
        index += line.text.length + sepSize;
      });
      return index
    },

    copy: function(copyHistory) {
      var doc = new Doc(getLines(this, this.first, this.first + this.size),
                        this.modeOption, this.first, this.lineSep, this.direction);
      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
      doc.sel = this.sel;
      doc.extend = false;
      if (copyHistory) {
        doc.history.undoDepth = this.history.undoDepth;
        doc.setHistory(this.getHistory());
      }
      return doc
    },

    linkedDoc: function(options) {
      if (!options) { options = {}; }
      var from = this.first, to = this.first + this.size;
      if (options.from != null && options.from > from) { from = options.from; }
      if (options.to != null && options.to < to) { to = options.to; }
      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);
      if (options.sharedHist) { copy.history = this.history
      ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
      copySharedMarkers(copy, findSharedMarkers(this));
      return copy
    },
    unlinkDoc: function(other) {
      var this$1 = this;

      if (other instanceof CodeMirror) { other = other.doc; }
      if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {
        var link = this$1.linked[i];
        if (link.doc != other) { continue }
        this$1.linked.splice(i, 1);
        other.unlinkDoc(this$1);
        detachSharedMarkers(findSharedMarkers(this$1));
        break
      } }
      // If the histories were shared, split them again
      if (other.history == this.history) {
        var splitIds = [other.id];
        linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true);
        other.history = new History(null);
        other.history.done = copyHistoryArray(this.history.done, splitIds);
        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
      }
    },
    iterLinkedDocs: function(f) {linkedDocs(this, f);},

    getMode: function() {return this.mode},
    getEditor: function() {return this.cm},

    splitLines: function(str) {
      if (this.lineSep) { return str.split(this.lineSep) }
      return splitLinesAuto(str)
    },
    lineSeparator: function() { return this.lineSep || "\n" },

    setDirection: docMethodOp(function (dir) {
      if (dir != "rtl") { dir = "ltr"; }
      if (dir == this.direction) { return }
      this.direction = dir;
      this.iter(function (line) { return line.order = null; });
      if (this.cm) { directionChanged(this.cm); }
    })
  });

  // Public alias.
  Doc.prototype.eachLine = Doc.prototype.iter;

  // Kludge to work around strange IE behavior where it'll sometimes
  // re-fire a series of drag-related events right after the drop (#1551)
  var lastDrop = 0;

  function onDrop(e) {
    var cm = this;
    clearDragCursor(cm);
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
      { return }
    e_preventDefault(e);
    if (ie) { lastDrop = +new Date; }
    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
    if (!pos || cm.isReadOnly()) { return }
    // Might be a file drop, in which case we simply extract the text
    // and insert it.
    if (files && files.length && window.FileReader && window.File) {
      var n = files.length, text = Array(n), read = 0;
      var loadFile = function (file, i) {
        if (cm.options.allowDropFileTypes &&
            indexOf(cm.options.allowDropFileTypes, file.type) == -1)
          { return }

        var reader = new FileReader;
        reader.onload = operation(cm, function () {
          var content = reader.result;
          if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = ""; }
          text[i] = content;
          if (++read == n) {
            pos = clipPos(cm.doc, pos);
            var change = {from: pos, to: pos,
                          text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
                          origin: "paste"};
            makeChange(cm.doc, change);
            setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
          }
        });
        reader.readAsText(file);
      };
      for (var i = 0; i < n; ++i) { loadFile(files[i], i); }
    } else { // Normal drop
      // Don't do a replace if the drop happened inside of the selected text.
      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
        cm.state.draggingText(e);
        // Ensure the editor is re-focused
        setTimeout(function () { return cm.display.input.focus(); }, 20);
        return
      }
      try {
        var text$1 = e.dataTransfer.getData("Text");
        if (text$1) {
          var selected;
          if (cm.state.draggingText && !cm.state.draggingText.copy)
            { selected = cm.listSelections(); }
          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
          if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)
            { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag"); } }
          cm.replaceSelection(text$1, "around", "paste");
          cm.display.input.focus();
        }
      }
      catch(e){}
    }
  }

  function onDragStart(cm, e) {
    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }

    e.dataTransfer.setData("Text", cm.getSelection());
    e.dataTransfer.effectAllowed = "copyMove";

    // Use dummy image instead of default browsers image.
    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
    if (e.dataTransfer.setDragImage && !safari) {
      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
      if (presto) {
        img.width = img.height = 1;
        cm.display.wrapper.appendChild(img);
        // Force a relayout, or Opera won't use our image for some obscure reason
        img._top = img.offsetTop;
      }
      e.dataTransfer.setDragImage(img, 0, 0);
      if (presto) { img.parentNode.removeChild(img); }
    }
  }

  function onDragOver(cm, e) {
    var pos = posFromMouse(cm, e);
    if (!pos) { return }
    var frag = document.createDocumentFragment();
    drawSelectionCursor(cm, pos, frag);
    if (!cm.display.dragCursor) {
      cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors");
      cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);
    }
    removeChildrenAndAdd(cm.display.dragCursor, frag);
  }

  function clearDragCursor(cm) {
    if (cm.display.dragCursor) {
      cm.display.lineSpace.removeChild(cm.display.dragCursor);
      cm.display.dragCursor = null;
    }
  }

  // These must be handled carefully, because naively registering a
  // handler for each editor will cause the editors to never be
  // garbage collected.

  function forEachCodeMirror(f) {
    if (!document.getElementsByClassName) { return }
    var byClass = document.getElementsByClassName("CodeMirror"), editors = [];
    for (var i = 0; i < byClass.length; i++) {
      var cm = byClass[i].CodeMirror;
      if (cm) { editors.push(cm); }
    }
    if (editors.length) { editors[0].operation(function () {
      for (var i = 0; i < editors.length; i++) { f(editors[i]); }
    }); }
  }

  var globalsRegistered = false;
  function ensureGlobalHandlers() {
    if (globalsRegistered) { return }
    registerGlobalHandlers();
    globalsRegistered = true;
  }
  function registerGlobalHandlers() {
    // When the window resizes, we need to refresh active editors.
    var resizeTimer;
    on(window, "resize", function () {
      if (resizeTimer == null) { resizeTimer = setTimeout(function () {
        resizeTimer = null;
        forEachCodeMirror(onResize);
      }, 100); }
    });
    // When the window loses focus, we want to show the editor as blurred
    on(window, "blur", function () { return forEachCodeMirror(onBlur); });
  }
  // Called when the window resizes
  function onResize(cm) {
    var d = cm.display;
    // Might be a text scaling operation, clear size caches.
    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
    d.scrollbarsClipped = false;
    cm.setSize();
  }

  var keyNames = {
    3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
    19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
    36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
    46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
    106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete", 145: "ScrollLock",
    173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
    221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
    63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
  };

  // Number keys
  for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); }
  // Alphabetic keys
  for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); }
  // Function keys
  for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2; }

  var keyMap = {};

  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
    "Esc": "singleSelection"
  };
  // Note that the save and find-related commands aren't defined by
  // default. User code or addons can define them. Unknown commands
  // are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
    "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
    "fallthrough": "basic"
  };
  // Very basic readline/emacs-style bindings, which are standard on Mac.
  keyMap.emacsy = {
    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars",
    "Ctrl-O": "openLine"
  };
  keyMap.macDefault = {
    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
    "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
    "fallthrough": ["basic", "emacsy"]
  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

  // KEYMAP DISPATCH

  function normalizeKeyName(name) {
    var parts = name.split(/-(?!$)/);
    name = parts[parts.length - 1];
    var alt, ctrl, shift, cmd;
    for (var i = 0; i < parts.length - 1; i++) {
      var mod = parts[i];
      if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; }
      else if (/^a(lt)?$/i.test(mod)) { alt = true; }
      else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; }
      else if (/^s(hift)?$/i.test(mod)) { shift = true; }
      else { throw new Error("Unrecognized modifier name: " + mod) }
    }
    if (alt) { name = "Alt-" + name; }
    if (ctrl) { name = "Ctrl-" + name; }
    if (cmd) { name = "Cmd-" + name; }
    if (shift) { name = "Shift-" + name; }
    return name
  }

  // This is a kludge to keep keymaps mostly working as raw objects
  // (backwards compatibility) while at the same time support features
  // like normalization and multi-stroke key bindings. It compiles a
  // new normalized keymap, and then updates the old object to reflect
  // this.
  function normalizeKeyMap(keymap) {
    var copy = {};
    for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {
      var value = keymap[keyname];
      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }
      if (value == "...") { delete keymap[keyname]; continue }

      var keys = map(keyname.split(" "), normalizeKeyName);
      for (var i = 0; i < keys.length; i++) {
        var val = (void 0), name = (void 0);
        if (i == keys.length - 1) {
          name = keys.join(" ");
          val = value;
        } else {
          name = keys.slice(0, i + 1).join(" ");
          val = "...";
        }
        var prev = copy[name];
        if (!prev) { copy[name] = val; }
        else if (prev != val) { throw new Error("Inconsistent bindings for " + name) }
      }
      delete keymap[keyname];
    } }
    for (var prop in copy) { keymap[prop] = copy[prop]; }
    return keymap
  }

  function lookupKey(key, map$$1, handle, context) {
    map$$1 = getKeyMap(map$$1);
    var found = map$$1.call ? map$$1.call(key, context) : map$$1[key];
    if (found === false) { return "nothing" }
    if (found === "...") { return "multi" }
    if (found != null && handle(found)) { return "handled" }

    if (map$$1.fallthrough) {
      if (Object.prototype.toString.call(map$$1.fallthrough) != "[object Array]")
        { return lookupKey(key, map$$1.fallthrough, handle, context) }
      for (var i = 0; i < map$$1.fallthrough.length; i++) {
        var result = lookupKey(key, map$$1.fallthrough[i], handle, context);
        if (result) { return result }
      }
    }
  }

  // Modifier key presses don't count as 'real' key presses for the
  // purpose of keymap fallthrough.
  function isModifierKey(value) {
    var name = typeof value == "string" ? value : keyNames[value.keyCode];
    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
  }

  function addModifierNames(name, event, noShift) {
    var base = name;
    if (event.altKey && base != "Alt") { name = "Alt-" + name; }
    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name; }
    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name; }
    if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name; }
    return name
  }

  // Look up the name of a key as indicated by an event object.
  function keyName(event, noShift) {
    if (presto && event.keyCode == 34 && event["char"]) { return false }
    var name = keyNames[event.keyCode];
    if (name == null || event.altGraphKey) { return false }
    // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,
    // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)
    if (event.keyCode == 3 && event.code) { name = event.code; }
    return addModifierNames(name, event, noShift)
  }

  function getKeyMap(val) {
    return typeof val == "string" ? keyMap[val] : val
  }

  // Helper for deleting text near the selection(s), used to implement
  // backspace, delete, and similar functionality.
  function deleteNearSelection(cm, compute) {
    var ranges = cm.doc.sel.ranges, kill = [];
    // Build up a set of ranges to kill first, merging overlapping
    // ranges.
    for (var i = 0; i < ranges.length; i++) {
      var toKill = compute(ranges[i]);
      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
        var replaced = kill.pop();
        if (cmp(replaced.from, toKill.from) < 0) {
          toKill.from = replaced.from;
          break
        }
      }
      kill.push(toKill);
    }
    // Next, remove those actual ranges.
    runInOp(cm, function () {
      for (var i = kill.length - 1; i >= 0; i--)
        { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); }
      ensureCursorVisible(cm);
    });
  }

  function moveCharLogically(line, ch, dir) {
    var target = skipExtendingChars(line.text, ch + dir, dir);
    return target < 0 || target > line.text.length ? null : target
  }

  function moveLogically(line, start, dir) {
    var ch = moveCharLogically(line, start.ch, dir);
    return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before")
  }

  function endOfLine(visually, cm, lineObj, lineNo, dir) {
    if (visually) {
      var order = getOrder(lineObj, cm.doc.direction);
      if (order) {
        var part = dir < 0 ? lst(order) : order[0];
        var moveInStorageOrder = (dir < 0) == (part.level == 1);
        var sticky = moveInStorageOrder ? "after" : "before";
        var ch;
        // With a wrapped rtl chunk (possibly spanning multiple bidi parts),
        // it could be that the last bidi part is not on the last visual line,
        // since visual lines contain content order-consecutive chunks.
        // Thus, in rtl, we are looking for the first (content-order) character
        // in the rtl chunk that is on the last line (that is, the same line
        // as the last (content-order) character).
        if (part.level > 0 || cm.doc.direction == "rtl") {
          var prep = prepareMeasureForLine(cm, lineObj);
          ch = dir < 0 ? lineObj.text.length - 1 : 0;
          var targetTop = measureCharPrepared(cm, prep, ch).top;
          ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch);
          if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1); }
        } else { ch = dir < 0 ? part.to : part.from; }
        return new Pos(lineNo, ch, sticky)
      }
    }
    return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after")
  }

  function moveVisually(cm, line, start, dir) {
    var bidi = getOrder(line, cm.doc.direction);
    if (!bidi) { return moveLogically(line, start, dir) }
    if (start.ch >= line.text.length) {
      start.ch = line.text.length;
      start.sticky = "before";
    } else if (start.ch <= 0) {
      start.ch = 0;
      start.sticky = "after";
    }
    var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos];
    if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {
      // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,
      // nothing interesting happens.
      return moveLogically(line, start, dir)
    }

    var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); };
    var prep;
    var getWrappedLineExtent = function (ch) {
      if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }
      prep = prep || prepareMeasureForLine(cm, line);
      return wrappedLineExtentChar(cm, line, prep, ch)
    };
    var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch);

    if (cm.doc.direction == "rtl" || part.level == 1) {
      var moveInStorageOrder = (part.level == 1) == (dir < 0);
      var ch = mv(start, moveInStorageOrder ? 1 : -1);
      if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {
        // Case 2: We move within an rtl part or in an rtl editor on the same visual line
        var sticky = moveInStorageOrder ? "before" : "after";
        return new Pos(start.line, ch, sticky)
      }
    }

    // Case 3: Could not move within this bidi part in this visual line, so leave
    // the current bidi part

    var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {
      var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder
        ? new Pos(start.line, mv(ch, 1), "before")
        : new Pos(start.line, ch, "after"); };

      for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {
        var part = bidi[partPos];
        var moveInStorageOrder = (dir > 0) == (part.level != 1);
        var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1);
        if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }
        ch = moveInStorageOrder ? part.from : mv(part.to, -1);
        if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }
      }
    };

    // Case 3a: Look for other bidi parts on the same visual line
    var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent);
    if (res) { return res }

    // Case 3b: Look for other bidi parts on the next visual line
    var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1);
    if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {
      res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh));
      if (res) { return res }
    }

    // Case 4: Nowhere to move
    return null
  }

  // Commands are parameter-less actions that can be performed on an
  // editor, mostly used for keybindings.
  var commands = {
    selectAll: selectAll,
    singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); },
    killLine: function (cm) { return deleteNearSelection(cm, function (range) {
      if (range.empty()) {
        var len = getLine(cm.doc, range.head.line).text.length;
        if (range.head.ch == len && range.head.line < cm.lastLine())
          { return {from: range.head, to: Pos(range.head.line + 1, 0)} }
        else
          { return {from: range.head, to: Pos(range.head.line, len)} }
      } else {
        return {from: range.from(), to: range.to()}
      }
    }); },
    deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({
      from: Pos(range.from().line, 0),
      to: clipPos(cm.doc, Pos(range.to().line + 1, 0))
    }); }); },
    delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({
      from: Pos(range.from().line, 0), to: range.from()
    }); }); },
    delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {
      var top = cm.charCoords(range.head, "div").top + 5;
      var leftPos = cm.coordsChar({left: 0, top: top}, "div");
      return {from: leftPos, to: range.from()}
    }); },
    delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {
      var top = cm.charCoords(range.head, "div").top + 5;
      var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
      return {from: range.from(), to: rightPos }
    }); },
    undo: function (cm) { return cm.undo(); },
    redo: function (cm) { return cm.redo(); },
    undoSelection: function (cm) { return cm.undoSelection(); },
    redoSelection: function (cm) { return cm.redoSelection(); },
    goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },
    goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },
    goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },
      {origin: "+move", bias: 1}
    ); },
    goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },
      {origin: "+move", bias: 1}
    ); },
    goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },
      {origin: "+move", bias: -1}
    ); },
    goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {
      var top = cm.cursorCoords(range.head, "div").top + 5;
      return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
    }, sel_move); },
    goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {
      var top = cm.cursorCoords(range.head, "div").top + 5;
      return cm.coordsChar({left: 0, top: top}, "div")
    }, sel_move); },
    goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {
      var top = cm.cursorCoords(range.head, "div").top + 5;
      var pos = cm.coordsChar({left: 0, top: top}, "div");
      if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) }
      return pos
    }, sel_move); },
    goLineUp: function (cm) { return cm.moveV(-1, "line"); },
    goLineDown: function (cm) { return cm.moveV(1, "line"); },
    goPageUp: function (cm) { return cm.moveV(-1, "page"); },
    goPageDown: function (cm) { return cm.moveV(1, "page"); },
    goCharLeft: function (cm) { return cm.moveH(-1, "char"); },
    goCharRight: function (cm) { return cm.moveH(1, "char"); },
    goColumnLeft: function (cm) { return cm.moveH(-1, "column"); },
    goColumnRight: function (cm) { return cm.moveH(1, "column"); },
    goWordLeft: function (cm) { return cm.moveH(-1, "word"); },
    goGroupRight: function (cm) { return cm.moveH(1, "group"); },
    goGroupLeft: function (cm) { return cm.moveH(-1, "group"); },
    goWordRight: function (cm) { return cm.moveH(1, "word"); },
    delCharBefore: function (cm) { return cm.deleteH(-1, "char"); },
    delCharAfter: function (cm) { return cm.deleteH(1, "char"); },
    delWordBefore: function (cm) { return cm.deleteH(-1, "word"); },
    delWordAfter: function (cm) { return cm.deleteH(1, "word"); },
    delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); },
    delGroupAfter: function (cm) { return cm.deleteH(1, "group"); },
    indentAuto: function (cm) { return cm.indentSelection("smart"); },
    indentMore: function (cm) { return cm.indentSelection("add"); },
    indentLess: function (cm) { return cm.indentSelection("subtract"); },
    insertTab: function (cm) { return cm.replaceSelection("\t"); },
    insertSoftTab: function (cm) {
      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
      for (var i = 0; i < ranges.length; i++) {
        var pos = ranges[i].from();
        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
        spaces.push(spaceStr(tabSize - col % tabSize));
      }
      cm.replaceSelections(spaces);
    },
    defaultTab: function (cm) {
      if (cm.somethingSelected()) { cm.indentSelection("add"); }
      else { cm.execCommand("insertTab"); }
    },
    // Swap the two chars left and right of each selection's head.
    // Move cursor behind the two swapped characters afterwards.
    //
    // Doesn't consider line feeds a character.
    // Doesn't scan more than one line above to find a character.
    // Doesn't do anything on an empty line.
    // Doesn't do anything with non-empty selections.
    transposeChars: function (cm) { return runInOp(cm, function () {
      var ranges = cm.listSelections(), newSel = [];
      for (var i = 0; i < ranges.length; i++) {
        if (!ranges[i].empty()) { continue }
        var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
        if (line) {
          if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); }
          if (cur.ch > 0) {
            cur = new Pos(cur.line, cur.ch + 1);
            cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
                            Pos(cur.line, cur.ch - 2), cur, "+transpose");
          } else if (cur.line > cm.doc.first) {
            var prev = getLine(cm.doc, cur.line - 1).text;
            if (prev) {
              cur = new Pos(cur.line, 1);
              cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
                              prev.charAt(prev.length - 1),
                              Pos(cur.line - 1, prev.length - 1), cur, "+transpose");
            }
          }
        }
        newSel.push(new Range(cur, cur));
      }
      cm.setSelections(newSel);
    }); },
    newlineAndIndent: function (cm) { return runInOp(cm, function () {
      var sels = cm.listSelections();
      for (var i = sels.length - 1; i >= 0; i--)
        { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input"); }
      sels = cm.listSelections();
      for (var i$1 = 0; i$1 < sels.length; i$1++)
        { cm.indentLine(sels[i$1].from().line, null, true); }
      ensureCursorVisible(cm);
    }); },
    openLine: function (cm) { return cm.replaceSelection("\n", "start"); },
    toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }
  };


  function lineStart(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLine(line);
    if (visual != line) { lineN = lineNo(visual); }
    return endOfLine(true, cm, visual, lineN, 1)
  }
  function lineEnd(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLineEnd(line);
    if (visual != line) { lineN = lineNo(visual); }
    return endOfLine(true, cm, line, lineN, -1)
  }
  function lineStartSmart(cm, pos) {
    var start = lineStart(cm, pos.line);
    var line = getLine(cm.doc, start.line);
    var order = getOrder(line, cm.doc.direction);
    if (!order || order[0].level == 0) {
      var firstNonWS = Math.max(0, line.text.search(/\S/));
      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
      return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)
    }
    return start
  }

  // Run a handler that was bound to a key.
  function doHandleBinding(cm, bound, dropShift) {
    if (typeof bound == "string") {
      bound = commands[bound];
      if (!bound) { return false }
    }
    // Ensure previous input has been read, so that the handler sees a
    // consistent view of the document
    cm.display.input.ensurePolled();
    var prevShift = cm.display.shift, done = false;
    try {
      if (cm.isReadOnly()) { cm.state.suppressEdits = true; }
      if (dropShift) { cm.display.shift = false; }
      done = bound(cm) != Pass;
    } finally {
      cm.display.shift = prevShift;
      cm.state.suppressEdits = false;
    }
    return done
  }

  function lookupKeyForEditor(cm, name, handle) {
    for (var i = 0; i < cm.state.keyMaps.length; i++) {
      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
      if (result) { return result }
    }
    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
      || lookupKey(name, cm.options.keyMap, handle, cm)
  }

  // Note that, despite the name, this function is also used to check
  // for bound mouse clicks.

  var stopSeq = new Delayed;

  function dispatchKey(cm, name, e, handle) {
    var seq = cm.state.keySeq;
    if (seq) {
      if (isModifierKey(name)) { return "handled" }
      if (/\'$/.test(name))
        { cm.state.keySeq = null; }
      else
        { stopSeq.set(50, function () {
          if (cm.state.keySeq == seq) {
            cm.state.keySeq = null;
            cm.display.input.reset();
          }
        }); }
      if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true }
    }
    return dispatchKeyInner(cm, name, e, handle)
  }

  function dispatchKeyInner(cm, name, e, handle) {
    var result = lookupKeyForEditor(cm, name, handle);

    if (result == "multi")
      { cm.state.keySeq = name; }
    if (result == "handled")
      { signalLater(cm, "keyHandled", cm, name, e); }

    if (result == "handled" || result == "multi") {
      e_preventDefault(e);
      restartBlink(cm);
    }

    return !!result
  }

  // Handle a key from the keydown event.
  function handleKeyBinding(cm, e) {
    var name = keyName(e, true);
    if (!name) { return false }

    if (e.shiftKey && !cm.state.keySeq) {
      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.
      return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); })
          || dispatchKey(cm, name, e, function (b) {
               if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
                 { return doHandleBinding(cm, b) }
             })
    } else {
      return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })
    }
  }

  // Handle a key from the keypress event
  function handleCharBinding(cm, e, ch) {
    return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); })
  }

  var lastStoppedKey = null;
  function onKeyDown(e) {
    var cm = this;
    cm.curOp.focus = activeElt();
    if (signalDOMEvent(cm, e)) { return }
    // IE does strange things with escape.
    if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; }
    var code = e.keyCode;
    cm.display.shift = code == 16 || e.shiftKey;
    var handled = handleKeyBinding(cm, e);
    if (presto) {
      lastStoppedKey = handled ? code : null;
      // Opera has no cut event... we try to at least catch the key combo
      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
        { cm.replaceSelection("", null, "cut"); }
    }

    // Turn mouse into crosshair when Alt is held on Mac.
    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
      { showCrossHair(cm); }
  }

  function showCrossHair(cm) {
    var lineDiv = cm.display.lineDiv;
    addClass(lineDiv, "CodeMirror-crosshair");

    function up(e) {
      if (e.keyCode == 18 || !e.altKey) {
        rmClass(lineDiv, "CodeMirror-crosshair");
        off(document, "keyup", up);
        off(document, "mouseover", up);
      }
    }
    on(document, "keyup", up);
    on(document, "mouseover", up);
  }

  function onKeyUp(e) {
    if (e.keyCode == 16) { this.doc.sel.shift = false; }
    signalDOMEvent(this, e);
  }

  function onKeyPress(e) {
    var cm = this;
    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }
    var keyCode = e.keyCode, charCode = e.charCode;
    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}
    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }
    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
    // Some browsers fire keypress events for backspace
    if (ch == "\x08") { return }
    if (handleCharBinding(cm, e, ch)) { return }
    cm.display.input.onKeyPress(e);
  }

  var DOUBLECLICK_DELAY = 400;

  var PastClick = function(time, pos, button) {
    this.time = time;
    this.pos = pos;
    this.button = button;
  };

  PastClick.prototype.compare = function (time, pos, button) {
    return this.time + DOUBLECLICK_DELAY > time &&
      cmp(pos, this.pos) == 0 && button == this.button
  };

  var lastClick, lastDoubleClick;
  function clickRepeat(pos, button) {
    var now = +new Date;
    if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {
      lastClick = lastDoubleClick = null;
      return "triple"
    } else if (lastClick && lastClick.compare(now, pos, button)) {
      lastDoubleClick = new PastClick(now, pos, button);
      lastClick = null;
      return "double"
    } else {
      lastClick = new PastClick(now, pos, button);
      lastDoubleClick = null;
      return "single"
    }
  }

  // A mouse down can be a single click, double click, triple click,
  // start of selection drag, start of text drag, new cursor
  // (ctrl-click), rectangle drag (alt-drag), or xwin
  // middle-click-paste. Or it might be a click on something we should
  // not interfere with, such as a scrollbar or widget.
  function onMouseDown(e) {
    var cm = this, display = cm.display;
    if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }
    display.input.ensurePolled();
    display.shift = e.shiftKey;

    if (eventInWidget(display, e)) {
      if (!webkit) {
        // Briefly turn off draggability, to allow widgets to do
        // normal dragging things.
        display.scroller.draggable = false;
        setTimeout(function () { return display.scroller.draggable = true; }, 100);
      }
      return
    }
    if (clickInGutter(cm, e)) { return }
    var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single";
    window.focus();

    // #3261: make sure, that we're not starting a second selection
    if (button == 1 && cm.state.selectingText)
      { cm.state.selectingText(e); }

    if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }

    if (button == 1) {
      if (pos) { leftButtonDown(cm, pos, repeat, e); }
      else if (e_target(e) == display.scroller) { e_preventDefault(e); }
    } else if (button == 2) {
      if (pos) { extendSelection(cm.doc, pos); }
      setTimeout(function () { return display.input.focus(); }, 20);
    } else if (button == 3) {
      if (captureRightClick) { cm.display.input.onContextMenu(e); }
      else { delayBlurEvent(cm); }
    }
  }

  function handleMappedButton(cm, button, pos, repeat, event) {
    var name = "Click";
    if (repeat == "double") { name = "Double" + name; }
    else if (repeat == "triple") { name = "Triple" + name; }
    name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name;

    return dispatchKey(cm,  addModifierNames(name, event), event, function (bound) {
      if (typeof bound == "string") { bound = commands[bound]; }
      if (!bound) { return false }
      var done = false;
      try {
        if (cm.isReadOnly()) { cm.state.suppressEdits = true; }
        done = bound(cm, pos) != Pass;
      } finally {
        cm.state.suppressEdits = false;
      }
      return done
    })
  }

  function configureMouse(cm, repeat, event) {
    var option = cm.getOption("configureMouse");
    var value = option ? option(cm, repeat, event) : {};
    if (value.unit == null) {
      var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey;
      value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line";
    }
    if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; }
    if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; }
    if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); }
    return value
  }

  function leftButtonDown(cm, pos, repeat, event) {
    if (ie) { setTimeout(bind(ensureFocus, cm), 0); }
    else { cm.curOp.focus = activeElt(); }

    var behavior = configureMouse(cm, repeat, event);

    var sel = cm.doc.sel, contained;
    if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
        repeat == "single" && (contained = sel.contains(pos)) > -1 &&
        (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&
        (cmp(contained.to(), pos) > 0 || pos.xRel < 0))
      { leftButtonStartDrag(cm, event, pos, behavior); }
    else
      { leftButtonSelect(cm, event, pos, behavior); }
  }

  // Start a text drag. When it ends, see if any dragging actually
  // happen, and treat as a click if it didn't.
  function leftButtonStartDrag(cm, event, pos, behavior) {
    var display = cm.display, moved = false;
    var dragEnd = operation(cm, function (e) {
      if (webkit) { display.scroller.draggable = false; }
      cm.state.draggingText = false;
      off(display.wrapper.ownerDocument, "mouseup", dragEnd);
      off(display.wrapper.ownerDocument, "mousemove", mouseMove);
      off(display.scroller, "dragstart", dragStart);
      off(display.scroller, "drop", dragEnd);
      if (!moved) {
        e_preventDefault(e);
        if (!behavior.addNew)
          { extendSelection(cm.doc, pos, null, null, behavior.extend); }
        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
        if (webkit || ie && ie_version == 9)
          { setTimeout(function () {display.wrapper.ownerDocument.body.focus(); display.input.focus();}, 20); }
        else
          { display.input.focus(); }
      }
    });
    var mouseMove = function(e2) {
      moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10;
    };
    var dragStart = function () { return moved = true; };
    // Let the drag handler handle this.
    if (webkit) { display.scroller.draggable = true; }
    cm.state.draggingText = dragEnd;
    dragEnd.copy = !behavior.moveOnDrag;
    // IE's approach to draggable
    if (display.scroller.dragDrop) { display.scroller.dragDrop(); }
    on(display.wrapper.ownerDocument, "mouseup", dragEnd);
    on(display.wrapper.ownerDocument, "mousemove", mouseMove);
    on(display.scroller, "dragstart", dragStart);
    on(display.scroller, "drop", dragEnd);

    delayBlurEvent(cm);
    setTimeout(function () { return display.input.focus(); }, 20);
  }

  function rangeForUnit(cm, pos, unit) {
    if (unit == "char") { return new Range(pos, pos) }
    if (unit == "word") { return cm.findWordAt(pos) }
    if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }
    var result = unit(cm, pos);
    return new Range(result.from, result.to)
  }

  // Normal selection, as opposed to text dragging.
  function leftButtonSelect(cm, event, start, behavior) {
    var display = cm.display, doc = cm.doc;
    e_preventDefault(event);

    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
    if (behavior.addNew && !behavior.extend) {
      ourIndex = doc.sel.contains(start);
      if (ourIndex > -1)
        { ourRange = ranges[ourIndex]; }
      else
        { ourRange = new Range(start, start); }
    } else {
      ourRange = doc.sel.primary();
      ourIndex = doc.sel.primIndex;
    }

    if (behavior.unit == "rectangle") {
      if (!behavior.addNew) { ourRange = new Range(start, start); }
      start = posFromMouse(cm, event, true, true);
      ourIndex = -1;
    } else {
      var range$$1 = rangeForUnit(cm, start, behavior.unit);
      if (behavior.extend)
        { ourRange = extendRange(ourRange, range$$1.anchor, range$$1.head, behavior.extend); }
      else
        { ourRange = range$$1; }
    }

    if (!behavior.addNew) {
      ourIndex = 0;
      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
      startSel = doc.sel;
    } else if (ourIndex == -1) {
      ourIndex = ranges.length;
      setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex),
                   {scroll: false, origin: "*mouse"});
    } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) {
      setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
                   {scroll: false, origin: "*mouse"});
      startSel = doc.sel;
    } else {
      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
    }

    var lastPos = start;
    function extendTo(pos) {
      if (cmp(lastPos, pos) == 0) { return }
      lastPos = pos;

      if (behavior.unit == "rectangle") {
        var ranges = [], tabSize = cm.options.tabSize;
        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
             line <= end; line++) {
          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
          if (left == right)
            { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); }
          else if (text.length > leftPos)
            { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); }
        }
        if (!ranges.length) { ranges.push(new Range(start, start)); }
        setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
                     {origin: "*mouse", scroll: false});
        cm.scrollIntoView(pos);
      } else {
        var oldRange = ourRange;
        var range$$1 = rangeForUnit(cm, pos, behavior.unit);
        var anchor = oldRange.anchor, head;
        if (cmp(range$$1.anchor, anchor) > 0) {
          head = range$$1.head;
          anchor = minPos(oldRange.from(), range$$1.anchor);
        } else {
          head = range$$1.anchor;
          anchor = maxPos(oldRange.to(), range$$1.head);
        }
        var ranges$1 = startSel.ranges.slice(0);
        ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));
        setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse);
      }
    }

    var editorSize = display.wrapper.getBoundingClientRect();
    // Used to ensure timeout re-tries don't fire when another extend
    // happened in the meantime (clearTimeout isn't reliable -- at
    // least on Chrome, the timeouts still happen even when cleared,
    // if the clear happens after their scheduled firing time).
    var counter = 0;

    function extend(e) {
      var curCount = ++counter;
      var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle");
      if (!cur) { return }
      if (cmp(cur, lastPos) != 0) {
        cm.curOp.focus = activeElt();
        extendTo(cur);
        var visible = visibleLines(display, doc);
        if (cur.line >= visible.to || cur.line < visible.from)
          { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); }
      } else {
        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
        if (outside) { setTimeout(operation(cm, function () {
          if (counter != curCount) { return }
          display.scroller.scrollTop += outside;
          extend(e);
        }), 50); }
      }
    }

    function done(e) {
      cm.state.selectingText = false;
      counter = Infinity;
      e_preventDefault(e);
      display.input.focus();
      off(display.wrapper.ownerDocument, "mousemove", move);
      off(display.wrapper.ownerDocument, "mouseup", up);
      doc.history.lastSelOrigin = null;
    }

    var move = operation(cm, function (e) {
      if (e.buttons === 0 || !e_button(e)) { done(e); }
      else { extend(e); }
    });
    var up = operation(cm, done);
    cm.state.selectingText = up;
    on(display.wrapper.ownerDocument, "mousemove", move);
    on(display.wrapper.ownerDocument, "mouseup", up);
  }

  // Used when mouse-selecting to adjust the anchor to the proper side
  // of a bidi jump depending on the visual position of the head.
  function bidiSimplify(cm, range$$1) {
    var anchor = range$$1.anchor;
    var head = range$$1.head;
    var anchorLine = getLine(cm.doc, anchor.line);
    if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range$$1 }
    var order = getOrder(anchorLine);
    if (!order) { return range$$1 }
    var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index];
    if (part.from != anchor.ch && part.to != anchor.ch) { return range$$1 }
    var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);
    if (boundary == 0 || boundary == order.length) { return range$$1 }

    // Compute the relative visual position of the head compared to the
    // anchor (<0 is to the left, >0 to the right)
    var leftSide;
    if (head.line != anchor.line) {
      leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0;
    } else {
      var headIndex = getBidiPartAt(order, head.ch, head.sticky);
      var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1);
      if (headIndex == boundary - 1 || headIndex == boundary)
        { leftSide = dir < 0; }
      else
        { leftSide = dir > 0; }
    }

    var usePart = order[boundary + (leftSide ? -1 : 0)];
    var from = leftSide == (usePart.level == 1);
    var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before";
    return anchor.ch == ch && anchor.sticky == sticky ? range$$1 : new Range(new Pos(anchor.line, ch, sticky), head)
  }


  // Determines whether an event happened in the gutter, and fires the
  // handlers for the corresponding event.
  function gutterEvent(cm, e, type, prevent) {
    var mX, mY;
    if (e.touches) {
      mX = e.touches[0].clientX;
      mY = e.touches[0].clientY;
    } else {
      try { mX = e.clientX; mY = e.clientY; }
      catch(e) { return false }
    }
    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }
    if (prevent) { e_preventDefault(e); }

    var display = cm.display;
    var lineBox = display.lineDiv.getBoundingClientRect();

    if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }
    mY -= lineBox.top - display.viewOffset;

    for (var i = 0; i < cm.options.gutters.length; ++i) {
      var g = display.gutters.childNodes[i];
      if (g && g.getBoundingClientRect().right >= mX) {
        var line = lineAtHeight(cm.doc, mY);
        var gutter = cm.options.gutters[i];
        signal(cm, type, cm, line, gutter, e);
        return e_defaultPrevented(e)
      }
    }
  }

  function clickInGutter(cm, e) {
    return gutterEvent(cm, e, "gutterClick", true)
  }

  // CONTEXT MENU HANDLING

  // To make the context menu work, we need to briefly unhide the
  // textarea (making it as unobtrusive as possible) to let the
  // right-click take effect on it.
  function onContextMenu(cm, e) {
    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }
    if (signalDOMEvent(cm, e, "contextmenu")) { return }
    if (!captureRightClick) { cm.display.input.onContextMenu(e); }
  }

  function contextMenuInGutter(cm, e) {
    if (!hasHandler(cm, "gutterContextMenu")) { return false }
    return gutterEvent(cm, e, "gutterContextMenu", false)
  }

  function themeChanged(cm) {
    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
    clearCaches(cm);
  }

  var Init = {toString: function(){return "CodeMirror.Init"}};

  var defaults = {};
  var optionHandlers = {};

  function defineOptions(CodeMirror) {
    var optionHandlers = CodeMirror.optionHandlers;

    function option(name, deflt, handle, notOnInit) {
      CodeMirror.defaults[name] = deflt;
      if (handle) { optionHandlers[name] =
        notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; }
    }

    CodeMirror.defineOption = option;

    // Passed to option handlers when there is no old value.
    CodeMirror.Init = Init;

    // These two are, on init, called from the constructor because they
    // have to be initialized before the editor can start at all.
    option("value", "", function (cm, val) { return cm.setValue(val); }, true);
    option("mode", null, function (cm, val) {
      cm.doc.modeOption = val;
      loadMode(cm);
    }, true);

    option("indentUnit", 2, loadMode, true);
    option("indentWithTabs", false);
    option("smartIndent", true);
    option("tabSize", 4, function (cm) {
      resetModeState(cm);
      clearCaches(cm);
      regChange(cm);
    }, true);

    option("lineSeparator", null, function (cm, val) {
      cm.doc.lineSep = val;
      if (!val) { return }
      var newBreaks = [], lineNo = cm.doc.first;
      cm.doc.iter(function (line) {
        for (var pos = 0;;) {
          var found = line.text.indexOf(val, pos);
          if (found == -1) { break }
          pos = found + val.length;
          newBreaks.push(Pos(lineNo, found));
        }
        lineNo++;
      });
      for (var i = newBreaks.length - 1; i >= 0; i--)
        { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); }
    });
    option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) {
      cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
      if (old != Init) { cm.refresh(); }
    });
    option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true);
    option("electricChars", true);
    option("inputStyle", mobile ? "contenteditable" : "textarea", function () {
      throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME
    }, true);
    option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true);
    option("autocorrect", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true);
    option("autocapitalize", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true);
    option("rtlMoveVisually", !windows);
    option("wholeLineUpdateBefore", true);

    option("theme", "default", function (cm) {
      themeChanged(cm);
      guttersChanged(cm);
    }, true);
    option("keyMap", "default", function (cm, val, old) {
      var next = getKeyMap(val);
      var prev = old != Init && getKeyMap(old);
      if (prev && prev.detach) { prev.detach(cm, next); }
      if (next.attach) { next.attach(cm, prev || null); }
    });
    option("extraKeys", null);
    option("configureMouse", null);

    option("lineWrapping", false, wrappingChanged, true);
    option("gutters", [], function (cm) {
      setGuttersForLineNumbers(cm.options);
      guttersChanged(cm);
    }, true);
    option("fixedGutter", true, function (cm, val) {
      cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
      cm.refresh();
    }, true);
    option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true);
    option("scrollbarStyle", "native", function (cm) {
      initScrollbars(cm);
      updateScrollbars(cm);
      cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
      cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
    }, true);
    option("lineNumbers", false, function (cm) {
      setGuttersForLineNumbers(cm.options);
      guttersChanged(cm);
    }, true);
    option("firstLineNumber", 1, guttersChanged, true);
    option("lineNumberFormatter", function (integer) { return integer; }, guttersChanged, true);
    option("showCursorWhenSelecting", false, updateSelection, true);

    option("resetSelectionOnContextMenu", true);
    option("lineWiseCopyCut", true);
    option("pasteLinesPerSelection", true);
    option("selectionsMayTouch", false);

    option("readOnly", false, function (cm, val) {
      if (val == "nocursor") {
        onBlur(cm);
        cm.display.input.blur();
      }
      cm.display.input.readOnlyChanged(val);
    });
    option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true);
    option("dragDrop", true, dragDropChanged);
    option("allowDropFileTypes", null);

    option("cursorBlinkRate", 530);
    option("cursorScrollMargin", 0);
    option("cursorHeight", 1, updateSelection, true);
    option("singleCursorHeightPerLine", true, updateSelection, true);
    option("workTime", 100);
    option("workDelay", 100);
    option("flattenSpans", true, resetModeState, true);
    option("addModeClass", false, resetModeState, true);
    option("pollInterval", 100);
    option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; });
    option("historyEventDelay", 1250);
    option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true);
    option("maxHighlightLength", 10000, resetModeState, true);
    option("moveInputWithCursor", true, function (cm, val) {
      if (!val) { cm.display.input.resetPosition(); }
    });

    option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; });
    option("autofocus", null);
    option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true);
    option("phrases", null);
  }

  function guttersChanged(cm) {
    updateGutters(cm);
    regChange(cm);
    alignHorizontally(cm);
  }

  function dragDropChanged(cm, value, old) {
    var wasOn = old && old != Init;
    if (!value != !wasOn) {
      var funcs = cm.display.dragFunctions;
      var toggle = value ? on : off;
      toggle(cm.display.scroller, "dragstart", funcs.start);
      toggle(cm.display.scroller, "dragenter", funcs.enter);
      toggle(cm.display.scroller, "dragover", funcs.over);
      toggle(cm.display.scroller, "dragleave", funcs.leave);
      toggle(cm.display.scroller, "drop", funcs.drop);
    }
  }

  function wrappingChanged(cm) {
    if (cm.options.lineWrapping) {
      addClass(cm.display.wrapper, "CodeMirror-wrap");
      cm.display.sizer.style.minWidth = "";
      cm.display.sizerWidth = null;
    } else {
      rmClass(cm.display.wrapper, "CodeMirror-wrap");
      findMaxLine(cm);
    }
    estimateLineHeights(cm);
    regChange(cm);
    clearCaches(cm);
    setTimeout(function () { return updateScrollbars(cm); }, 100);
  }

  // A CodeMirror instance represents an editor. This is the object
  // that user code is usually dealing with.

  function CodeMirror(place, options) {
    var this$1 = this;

    if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }

    this.options = options = options ? copyObj(options) : {};
    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);
    setGuttersForLineNumbers(options);

    var doc = options.value;
    if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); }
    else if (options.mode) { doc.modeOption = options.mode; }
    this.doc = doc;

    var input = new CodeMirror.inputStyles[options.inputStyle](this);
    var display = this.display = new Display(place, doc, input);
    display.wrapper.CodeMirror = this;
    updateGutters(this);
    themeChanged(this);
    if (options.lineWrapping)
      { this.display.wrapper.className += " CodeMirror-wrap"; }
    initScrollbars(this);

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap
      overlays: [], // highlighting overlays, as added by addOverlay
      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
      overwrite: false,
      delayingBlurEvent: false,
      focused: false,
      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
      selectingText: false,
      draggingText: false,
      highlight: new Delayed(), // stores highlight worker timeout
      keySeq: null,  // Unfinished key sequence
      specialChars: null
    };

    if (options.autofocus && !mobile) { display.input.focus(); }

    // Override magic textarea content restore that IE sometimes does
    // on our hidden textarea on reload
    if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); }

    registerEventHandlers(this);
    ensureGlobalHandlers();

    startOperation(this);
    this.curOp.forceUpdate = true;
    attachDoc(this, doc);

    if ((options.autofocus && !mobile) || this.hasFocus())
      { setTimeout(bind(onFocus, this), 20); }
    else
      { onBlur(this); }

    for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))
      { optionHandlers[opt](this$1, options[opt], Init); } }
    maybeUpdateLineNumberWidth(this);
    if (options.finishInit) { options.finishInit(this); }
    for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1); }
    endOperation(this);
    // Suppress optimizelegibility in Webkit, since it breaks text
    // measuring on line wrapping boundaries.
    if (webkit && options.lineWrapping &&
        getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
      { display.lineDiv.style.textRendering = "auto"; }
  }

  // The default configuration options.
  CodeMirror.defaults = defaults;
  // Functions to run when options are changed.
  CodeMirror.optionHandlers = optionHandlers;

  // Attach the necessary event handlers when initializing the editor
  function registerEventHandlers(cm) {
    var d = cm.display;
    on(d.scroller, "mousedown", operation(cm, onMouseDown));
    // Older IE's will not fire a second mousedown for a double click
    if (ie && ie_version < 11)
      { on(d.scroller, "dblclick", operation(cm, function (e) {
        if (signalDOMEvent(cm, e)) { return }
        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }
        e_preventDefault(e);
        var word = cm.findWordAt(pos);
        extendSelection(cm.doc, word.anchor, word.head);
      })); }
    else
      { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); }
    // Some browsers fire contextmenu *after* opening the menu, at
    // which point we can't mess with it anymore. Context menu is
    // handled in onMouseDown for these browsers.
    on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); });

    // Used to suppress mouse event handling when a touch happens
    var touchFinished, prevTouch = {end: 0};
    function finishTouch() {
      if (d.activeTouch) {
        touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000);
        prevTouch = d.activeTouch;
        prevTouch.end = +new Date;
      }
    }
    function isMouseLikeTouchEvent(e) {
      if (e.touches.length != 1) { return false }
      var touch = e.touches[0];
      return touch.radiusX <= 1 && touch.radiusY <= 1
    }
    function farAway(touch, other) {
      if (other.left == null) { return true }
      var dx = other.left - touch.left, dy = other.top - touch.top;
      return dx * dx + dy * dy > 20 * 20
    }
    on(d.scroller, "touchstart", function (e) {
      if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {
        d.input.ensurePolled();
        clearTimeout(touchFinished);
        var now = +new Date;
        d.activeTouch = {start: now, moved: false,
                         prev: now - prevTouch.end <= 300 ? prevTouch : null};
        if (e.touches.length == 1) {
          d.activeTouch.left = e.touches[0].pageX;
          d.activeTouch.top = e.touches[0].pageY;
        }
      }
    });
    on(d.scroller, "touchmove", function () {
      if (d.activeTouch) { d.activeTouch.moved = true; }
    });
    on(d.scroller, "touchend", function (e) {
      var touch = d.activeTouch;
      if (touch && !eventInWidget(d, e) && touch.left != null &&
          !touch.moved && new Date - touch.start < 300) {
        var pos = cm.coordsChar(d.activeTouch, "page"), range;
        if (!touch.prev || farAway(touch, touch.prev)) // Single tap
          { range = new Range(pos, pos); }
        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
          { range = cm.findWordAt(pos); }
        else // Triple tap
          { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); }
        cm.setSelection(range.anchor, range.head);
        cm.focus();
        e_preventDefault(e);
      }
      finishTouch();
    });
    on(d.scroller, "touchcancel", finishTouch);

    // Sync scrolling between fake scrollbars and real scrollable
    // area, ensure viewport is updated when scrolling.
    on(d.scroller, "scroll", function () {
      if (d.scroller.clientHeight) {
        updateScrollTop(cm, d.scroller.scrollTop);
        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }
    });

    // Listen to wheel events in order to try and update the viewport on time.
    on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); });
    on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); });

    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    d.dragFunctions = {
      enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }},
      over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},
      start: function (e) { return onDragStart(cm, e); },
      drop: operation(cm, onDrop),
      leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }}
    };

    var inp = d.input.getField();
    on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); });
    on(inp, "keydown", operation(cm, onKeyDown));
    on(inp, "keypress", operation(cm, onKeyPress));
    on(inp, "focus", function (e) { return onFocus(cm, e); });
    on(inp, "blur", function (e) { return onBlur(cm, e); });
  }

  var initHooks = [];
  CodeMirror.defineInitHook = function (f) { return initHooks.push(f); };

  // Indent the given line. The how parameter can be "smart",
  // "add"/null, "subtract", or "prev". When aggressive is false
  // (typically set to true for forced single-line indents), empty
  // lines are not indented, and places where the mode returns Pass
  // are left alone.
  function indentLine(cm, n, how, aggressive) {
    var doc = cm.doc, state;
    if (how == null) { how = "add"; }
    if (how == "smart") {
      // Fall back to "prev" when the mode doesn't have an indentation
      // method.
      if (!doc.mode.indent) { how = "prev"; }
      else { state = getContextBefore(cm, n).state; }
    }

    var tabSize = cm.options.tabSize;
    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
    if (line.stateAfter) { line.stateAfter = null; }
    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
    if (!aggressive && !/\S/.test(line.text)) {
      indentation = 0;
      how = "not";
    } else if (how == "smart") {
      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
      if (indentation == Pass || indentation > 150) {
        if (!aggressive) { return }
        how = "prev";
      }
    }
    if (how == "prev") {
      if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); }
      else { indentation = 0; }
    } else if (how == "add") {
      indentation = curSpace + cm.options.indentUnit;
    } else if (how == "subtract") {
      indentation = curSpace - cm.options.indentUnit;
    } else if (typeof how == "number") {
      indentation = curSpace + how;
    }
    indentation = Math.max(0, indentation);

    var indentString = "", pos = 0;
    if (cm.options.indentWithTabs)
      { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} }
    if (pos < indentation) { indentString += spaceStr(indentation - pos); }

    if (indentString != curSpaceString) {
      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
      line.stateAfter = null;
      return true
    } else {
      // Ensure that, if the cursor was in the whitespace at the start
      // of the line, it is moved to the end of that space.
      for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {
        var range = doc.sel.ranges[i$1];
        if (range.head.line == n && range.head.ch < curSpaceString.length) {
          var pos$1 = Pos(n, curSpaceString.length);
          replaceOneSelection(doc, i$1, new Range(pos$1, pos$1));
          break
        }
      }
    }
  }

  // This will be set to a {lineWise: bool, text: [string]} object, so
  // that, when pasting, we know what kind of selections the copied
  // text was made out of.
  var lastCopied = null;

  function setLastCopied(newLastCopied) {
    lastCopied = newLastCopied;
  }

  function applyTextInput(cm, inserted, deleted, sel, origin) {
    var doc = cm.doc;
    cm.display.shift = false;
    if (!sel) { sel = doc.sel; }

    var paste = cm.state.pasteIncoming || origin == "paste";
    var textLines = splitLinesAuto(inserted), multiPaste = null;
    // When pasting N lines into N selections, insert one line per selection
    if (paste && sel.ranges.length > 1) {
      if (lastCopied && lastCopied.text.join("\n") == inserted) {
        if (sel.ranges.length % lastCopied.text.length == 0) {
          multiPaste = [];
          for (var i = 0; i < lastCopied.text.length; i++)
            { multiPaste.push(doc.splitLines(lastCopied.text[i])); }
        }
      } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {
        multiPaste = map(textLines, function (l) { return [l]; });
      }
    }

    var updateInput = cm.curOp.updateInput;
    // Normal behavior is to insert the new text into every selection
    for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
      var range$$1 = sel.ranges[i$1];
      var from = range$$1.from(), to = range$$1.to();
      if (range$$1.empty()) {
        if (deleted && deleted > 0) // Handle deletion
          { from = Pos(from.line, from.ch - deleted); }
        else if (cm.state.overwrite && !paste) // Handle overwrite
          { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); }
        else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted)
          { from = to = Pos(from.line, 0); }
      }
      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
                         origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);
    }
    if (inserted && !paste)
      { triggerElectric(cm, inserted); }

    ensureCursorVisible(cm);
    if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; }
    cm.curOp.typing = true;
    cm.state.pasteIncoming = cm.state.cutIncoming = false;
  }

  function handlePaste(e, cm) {
    var pasted = e.clipboardData && e.clipboardData.getData("Text");
    if (pasted) {
      e.preventDefault();
      if (!cm.isReadOnly() && !cm.options.disableInput)
        { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }); }
      return true
    }
  }

  function triggerElectric(cm, inserted) {
    // When an 'electric' character is inserted, immediately trigger a reindent
    if (!cm.options.electricChars || !cm.options.smartIndent) { return }
    var sel = cm.doc.sel;

    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range$$1 = sel.ranges[i];
      if (range$$1.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range$$1.head.line)) { continue }
      var mode = cm.getModeAt(range$$1.head);
      var indented = false;
      if (mode.electricChars) {
        for (var j = 0; j < mode.electricChars.length; j++)
          { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
            indented = indentLine(cm, range$$1.head.line, "smart");
            break
          } }
      } else if (mode.electricInput) {
        if (mode.electricInput.test(getLine(cm.doc, range$$1.head.line).text.slice(0, range$$1.head.ch)))
          { indented = indentLine(cm, range$$1.head.line, "smart"); }
      }
      if (indented) { signalLater(cm, "electricInput", cm, range$$1.head.line); }
    }
  }

  function copyableRanges(cm) {
    var text = [], ranges = [];
    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
      var line = cm.doc.sel.ranges[i].head.line;
      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
      ranges.push(lineRange);
      text.push(cm.getRange(lineRange.anchor, lineRange.head));
    }
    return {text: text, ranges: ranges}
  }

  function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) {
    field.setAttribute("autocorrect", !!autocorrect);
    field.setAttribute("autocapitalize", !!autocapitalize);
    field.setAttribute("spellcheck", !!spellcheck);
  }

  function hiddenTextarea() {
    var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none");
    var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
    // The textarea is kept positioned near the cursor to prevent the
    // fact that it'll be scrolled into view on input from scrolling
    // our fake cursor out of view. On webkit, when wrap=off, paste is
    // very slow. So make the area wide instead.
    if (webkit) { te.style.width = "1000px"; }
    else { te.setAttribute("wrap", "off"); }
    // If border: 0; -- iOS fails to open keyboard (issue #1287)
    if (ios) { te.style.border = "1px solid black"; }
    disableBrowserMagic(te);
    return div
  }

  // The publicly visible API. Note that methodOp(f) means
  // 'wrap f in an operation, performed on its `this` parameter'.

  // This is not the complete set of editor methods. Most of the
  // methods defined on the Doc type are also injected into
  // CodeMirror.prototype, for backwards compatibility and
  // convenience.

  function addEditorMethods(CodeMirror) {
    var optionHandlers = CodeMirror.optionHandlers;

    var helpers = CodeMirror.helpers = {};

    CodeMirror.prototype = {
      constructor: CodeMirror,
      focus: function(){window.focus(); this.display.input.focus();},

      setOption: function(option, value) {
        var options = this.options, old = options[option];
        if (options[option] == value && option != "mode") { return }
        options[option] = value;
        if (optionHandlers.hasOwnProperty(option))
          { operation(this, optionHandlers[option])(this, value, old); }
        signal(this, "optionChange", this, option);
      },

      getOption: function(option) {return this.options[option]},
      getDoc: function() {return this.doc},

      addKeyMap: function(map$$1, bottom) {
        this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map$$1));
      },
      removeKeyMap: function(map$$1) {
        var maps = this.state.keyMaps;
        for (var i = 0; i < maps.length; ++i)
          { if (maps[i] == map$$1 || maps[i].name == map$$1) {
            maps.splice(i, 1);
            return true
          } }
      },

      addOverlay: methodOp(function(spec, options) {
        var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
        if (mode.startState) { throw new Error("Overlays may not be stateful.") }
        insertSorted(this.state.overlays,
                     {mode: mode, modeSpec: spec, opaque: options && options.opaque,
                      priority: (options && options.priority) || 0},
                     function (overlay) { return overlay.priority; });
        this.state.modeGen++;
        regChange(this);
      }),
      removeOverlay: methodOp(function(spec) {
        var this$1 = this;

        var overlays = this.state.overlays;
        for (var i = 0; i < overlays.length; ++i) {
          var cur = overlays[i].modeSpec;
          if (cur == spec || typeof spec == "string" && cur.name == spec) {
            overlays.splice(i, 1);
            this$1.state.modeGen++;
            regChange(this$1);
            return
          }
        }
      }),

      indentLine: methodOp(function(n, dir, aggressive) {
        if (typeof dir != "string" && typeof dir != "number") {
          if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev"; }
          else { dir = dir ? "add" : "subtract"; }
        }
        if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); }
      }),
      indentSelection: methodOp(function(how) {
        var this$1 = this;

        var ranges = this.doc.sel.ranges, end = -1;
        for (var i = 0; i < ranges.length; i++) {
          var range$$1 = ranges[i];
          if (!range$$1.empty()) {
            var from = range$$1.from(), to = range$$1.to();
            var start = Math.max(end, from.line);
            end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
            for (var j = start; j < end; ++j)
              { indentLine(this$1, j, how); }
            var newRanges = this$1.doc.sel.ranges;
            if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
              { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }
          } else if (range$$1.head.line > end) {
            indentLine(this$1, range$$1.head.line, how, true);
            end = range$$1.head.line;
            if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1); }
          }
        }
      }),

      // Fetch the parser token for a given character. Useful for hacks
      // that want to inspect the mode state (say, for completion).
      getTokenAt: function(pos, precise) {
        return takeToken(this, pos, precise)
      },

      getLineTokens: function(line, precise) {
        return takeToken(this, Pos(line), precise, true)
      },

      getTokenTypeAt: function(pos) {
        pos = clipPos(this.doc, pos);
        var styles = getLineStyles(this, getLine(this.doc, pos.line));
        var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
        var type;
        if (ch == 0) { type = styles[2]; }
        else { for (;;) {
          var mid = (before + after) >> 1;
          if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; }
          else if (styles[mid * 2 + 1] < ch) { before = mid + 1; }
          else { type = styles[mid * 2 + 2]; break }
        } }
        var cut = type ? type.indexOf("overlay ") : -1;
        return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
      },

      getModeAt: function(pos) {
        var mode = this.doc.mode;
        if (!mode.innerMode) { return mode }
        return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
      },

      getHelper: function(pos, type) {
        return this.getHelpers(pos, type)[0]
      },

      getHelpers: function(pos, type) {
        var this$1 = this;

        var found = [];
        if (!helpers.hasOwnProperty(type)) { return found }
        var help = helpers[type], mode = this.getModeAt(pos);
        if (typeof mode[type] == "string") {
          if (help[mode[type]]) { found.push(help[mode[type]]); }
        } else if (mode[type]) {
          for (var i = 0; i < mode[type].length; i++) {
            var val = help[mode[type][i]];
            if (val) { found.push(val); }
          }
        } else if (mode.helperType && help[mode.helperType]) {
          found.push(help[mode.helperType]);
        } else if (help[mode.name]) {
          found.push(help[mode.name]);
        }
        for (var i$1 = 0; i$1 < help._global.length; i$1++) {
          var cur = help._global[i$1];
          if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1)
            { found.push(cur.val); }
        }
        return found
      },

      getStateAfter: function(line, precise) {
        var doc = this.doc;
        line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
        return getContextBefore(this, line + 1, precise).state
      },

      cursorCoords: function(start, mode) {
        var pos, range$$1 = this.doc.sel.primary();
        if (start == null) { pos = range$$1.head; }
        else if (typeof start == "object") { pos = clipPos(this.doc, start); }
        else { pos = start ? range$$1.from() : range$$1.to(); }
        return cursorCoords(this, pos, mode || "page")
      },

      charCoords: function(pos, mode) {
        return charCoords(this, clipPos(this.doc, pos), mode || "page")
      },

      coordsChar: function(coords, mode) {
        coords = fromCoordSystem(this, coords, mode || "page");
        return coordsChar(this, coords.left, coords.top)
      },

      lineAtHeight: function(height, mode) {
        height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
        return lineAtHeight(this.doc, height + this.display.viewOffset)
      },
      heightAtLine: function(line, mode, includeWidgets) {
        var end = false, lineObj;
        if (typeof line == "number") {
          var last = this.doc.first + this.doc.size - 1;
          if (line < this.doc.first) { line = this.doc.first; }
          else if (line > last) { line = last; end = true; }
          lineObj = getLine(this.doc, line);
        } else {
          lineObj = line;
        }
        return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top +
          (end ? this.doc.height - heightAtLine(lineObj) : 0)
      },

      defaultTextHeight: function() { return textHeight(this.display) },
      defaultCharWidth: function() { return charWidth(this.display) },

      getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},

      addWidget: function(pos, node, scroll, vert, horiz) {
        var display = this.display;
        pos = cursorCoords(this, clipPos(this.doc, pos));
        var top = pos.bottom, left = pos.left;
        node.style.position = "absolute";
        node.setAttribute("cm-ignore-events", "true");
        this.display.input.setUneditable(node);
        display.sizer.appendChild(node);
        if (vert == "over") {
          top = pos.top;
        } else if (vert == "above" || vert == "near") {
          var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
          hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
          // Default to positioning above (if specified and possible); otherwise default to positioning below
          if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
            { top = pos.top - node.offsetHeight; }
          else if (pos.bottom + node.offsetHeight <= vspace)
            { top = pos.bottom; }
          if (left + node.offsetWidth > hspace)
            { left = hspace - node.offsetWidth; }
        }
        node.style.top = top + "px";
        node.style.left = node.style.right = "";
        if (horiz == "right") {
          left = display.sizer.clientWidth - node.offsetWidth;
          node.style.right = "0px";
        } else {
          if (horiz == "left") { left = 0; }
          else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; }
          node.style.left = left + "px";
        }
        if (scroll)
          { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); }
      },

      triggerOnKeyDown: methodOp(onKeyDown),
      triggerOnKeyPress: methodOp(onKeyPress),
      triggerOnKeyUp: onKeyUp,
      triggerOnMouseDown: methodOp(onMouseDown),

      execCommand: function(cmd) {
        if (commands.hasOwnProperty(cmd))
          { return commands[cmd].call(null, this) }
      },

      triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),

      findPosH: function(from, amount, unit, visually) {
        var this$1 = this;

        var dir = 1;
        if (amount < 0) { dir = -1; amount = -amount; }
        var cur = clipPos(this.doc, from);
        for (var i = 0; i < amount; ++i) {
          cur = findPosH(this$1.doc, cur, dir, unit, visually);
          if (cur.hitSide) { break }
        }
        return cur
      },

      moveH: methodOp(function(dir, unit) {
        var this$1 = this;

        this.extendSelectionsBy(function (range$$1) {
          if (this$1.display.shift || this$1.doc.extend || range$$1.empty())
            { return findPosH(this$1.doc, range$$1.head, dir, unit, this$1.options.rtlMoveVisually) }
          else
            { return dir < 0 ? range$$1.from() : range$$1.to() }
        }, sel_move);
      }),

      deleteH: methodOp(function(dir, unit) {
        var sel = this.doc.sel, doc = this.doc;
        if (sel.somethingSelected())
          { doc.replaceSelection("", null, "+delete"); }
        else
          { deleteNearSelection(this, function (range$$1) {
            var other = findPosH(doc, range$$1.head, dir, unit, false);
            return dir < 0 ? {from: other, to: range$$1.head} : {from: range$$1.head, to: other}
          }); }
      }),

      findPosV: function(from, amount, unit, goalColumn) {
        var this$1 = this;

        var dir = 1, x = goalColumn;
        if (amount < 0) { dir = -1; amount = -amount; }
        var cur = clipPos(this.doc, from);
        for (var i = 0; i < amount; ++i) {
          var coords = cursorCoords(this$1, cur, "div");
          if (x == null) { x = coords.left; }
          else { coords.left = x; }
          cur = findPosV(this$1, coords, dir, unit);
          if (cur.hitSide) { break }
        }
        return cur
      },

      moveV: methodOp(function(dir, unit) {
        var this$1 = this;

        var doc = this.doc, goals = [];
        var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();
        doc.extendSelectionsBy(function (range$$1) {
          if (collapse)
            { return dir < 0 ? range$$1.from() : range$$1.to() }
          var headPos = cursorCoords(this$1, range$$1.head, "div");
          if (range$$1.goalColumn != null) { headPos.left = range$$1.goalColumn; }
          goals.push(headPos.left);
          var pos = findPosV(this$1, headPos, dir, unit);
          if (unit == "page" && range$$1 == doc.sel.primary())
            { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top); }
          return pos
        }, sel_move);
        if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)
          { doc.sel.ranges[i].goalColumn = goals[i]; } }
      }),

      // Find the word at the given position (as returned by coordsChar).
      findWordAt: function(pos) {
        var doc = this.doc, line = getLine(doc, pos.line).text;
        var start = pos.ch, end = pos.ch;
        if (line) {
          var helper = this.getHelper(pos, "wordChars");
          if ((pos.sticky == "before" || end == line.length) && start) { --start; } else { ++end; }
          var startChar = line.charAt(start);
          var check = isWordChar(startChar, helper)
            ? function (ch) { return isWordChar(ch, helper); }
            : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); }
            : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); };
          while (start > 0 && check(line.charAt(start - 1))) { --start; }
          while (end < line.length && check(line.charAt(end))) { ++end; }
        }
        return new Range(Pos(pos.line, start), Pos(pos.line, end))
      },

      toggleOverwrite: function(value) {
        if (value != null && value == this.state.overwrite) { return }
        if (this.state.overwrite = !this.state.overwrite)
          { addClass(this.display.cursorDiv, "CodeMirror-overwrite"); }
        else
          { rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); }

        signal(this, "overwriteToggle", this, this.state.overwrite);
      },
      hasFocus: function() { return this.display.input.getField() == activeElt() },
      isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },

      scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }),
      getScrollInfo: function() {
        var scroller = this.display.scroller;
        return {left: scroller.scrollLeft, top: scroller.scrollTop,
                height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
                width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
                clientHeight: displayHeight(this), clientWidth: displayWidth(this)}
      },

      scrollIntoView: methodOp(function(range$$1, margin) {
        if (range$$1 == null) {
          range$$1 = {from: this.doc.sel.primary().head, to: null};
          if (margin == null) { margin = this.options.cursorScrollMargin; }
        } else if (typeof range$$1 == "number") {
          range$$1 = {from: Pos(range$$1, 0), to: null};
        } else if (range$$1.from == null) {
          range$$1 = {from: range$$1, to: null};
        }
        if (!range$$1.to) { range$$1.to = range$$1.from; }
        range$$1.margin = margin || 0;

        if (range$$1.from.line != null) {
          scrollToRange(this, range$$1);
        } else {
          scrollToCoordsRange(this, range$$1.from, range$$1.to, range$$1.margin);
        }
      }),

      setSize: methodOp(function(width, height) {
        var this$1 = this;

        var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; };
        if (width != null) { this.display.wrapper.style.width = interpret(width); }
        if (height != null) { this.display.wrapper.style.height = interpret(height); }
        if (this.options.lineWrapping) { clearLineMeasurementCache(this); }
        var lineNo$$1 = this.display.viewFrom;
        this.doc.iter(lineNo$$1, this.display.viewTo, function (line) {
          if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)
            { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo$$1, "widget"); break } } }
          ++lineNo$$1;
        });
        this.curOp.forceUpdate = true;
        signal(this, "refresh", this);
      }),

      operation: function(f){return runInOp(this, f)},
      startOperation: function(){return startOperation(this)},
      endOperation: function(){return endOperation(this)},

      refresh: methodOp(function() {
        var oldHeight = this.display.cachedTextHeight;
        regChange(this);
        this.curOp.forceUpdate = true;
        clearCaches(this);
        scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop);
        updateGutterSpace(this);
        if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
          { estimateLineHeights(this); }
        signal(this, "refresh", this);
      }),

      swapDoc: methodOp(function(doc) {
        var old = this.doc;
        old.cm = null;
        attachDoc(this, doc);
        clearCaches(this);
        this.display.input.reset();
        scrollToCoords(this, doc.scrollLeft, doc.scrollTop);
        this.curOp.forceScroll = true;
        signalLater(this, "swapDoc", this, old);
        return old
      }),

      phrase: function(phraseText) {
        var phrases = this.options.phrases;
        return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText
      },

      getInputField: function(){return this.display.input.getField()},
      getWrapperElement: function(){return this.display.wrapper},
      getScrollerElement: function(){return this.display.scroller},
      getGutterElement: function(){return this.display.gutters}
    };
    eventMixin(CodeMirror);

    CodeMirror.registerHelper = function(type, name, value) {
      if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; }
      helpers[type][name] = value;
    };
    CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
      CodeMirror.registerHelper(type, name, value);
      helpers[type]._global.push({pred: predicate, val: value});
    };
  }

  // Used for horizontal relative motion. Dir is -1 or 1 (left or
  // right), unit can be "char", "column" (like char, but doesn't
  // cross line boundaries), "word" (across next word), or "group" (to
  // the start of next group of word or non-word-non-whitespace
  // chars). The visually param controls whether, in right-to-left
  // text, direction 1 means to move towards the next index in the
  // string, or towards the character to the right of the current
  // position. The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosH(doc, pos, dir, unit, visually) {
    var oldPos = pos;
    var origDir = dir;
    var lineObj = getLine(doc, pos.line);
    function findNextLine() {
      var l = pos.line + dir;
      if (l < doc.first || l >= doc.first + doc.size) { return false }
      pos = new Pos(l, pos.ch, pos.sticky);
      return lineObj = getLine(doc, l)
    }
    function moveOnce(boundToLine) {
      var next;
      if (visually) {
        next = moveVisually(doc.cm, lineObj, pos, dir);
      } else {
        next = moveLogically(lineObj, pos, dir);
      }
      if (next == null) {
        if (!boundToLine && findNextLine())
          { pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir); }
        else
          { return false }
      } else {
        pos = next;
      }
      return true
    }

    if (unit == "char") {
      moveOnce();
    } else if (unit == "column") {
      moveOnce(true);
    } else if (unit == "word" || unit == "group") {
      var sawType = null, group = unit == "group";
      var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
      for (var first = true;; first = false) {
        if (dir < 0 && !moveOnce(!first)) { break }
        var cur = lineObj.text.charAt(pos.ch) || "\n";
        var type = isWordChar(cur, helper) ? "w"
          : group && cur == "\n" ? "n"
          : !group || /\s/.test(cur) ? null
          : "p";
        if (group && !first && !type) { type = "s"; }
        if (sawType && sawType != type) {
          if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after";}
          break
        }

        if (type) { sawType = type; }
        if (dir > 0 && !moveOnce(!first)) { break }
      }
    }
    var result = skipAtomic(doc, pos, oldPos, origDir, true);
    if (equalCursorPos(oldPos, result)) { result.hitSide = true; }
    return result
  }

  // For relative vertical movement. Dir may be -1 or 1. Unit can be
  // "page" or "line". The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosV(cm, pos, dir, unit) {
    var doc = cm.doc, x = pos.left, y;
    if (unit == "page") {
      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
      var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3);
      y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;

    } else if (unit == "line") {
      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
    }
    var target;
    for (;;) {
      target = coordsChar(cm, x, y);
      if (!target.outside) { break }
      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }
      y += dir * 5;
    }
    return target
  }

  // CONTENTEDITABLE INPUT STYLE

  var ContentEditableInput = function(cm) {
    this.cm = cm;
    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
    this.polling = new Delayed();
    this.composing = null;
    this.gracePeriod = false;
    this.readDOMTimeout = null;
  };

  ContentEditableInput.prototype.init = function (display) {
      var this$1 = this;

    var input = this, cm = input.cm;
    var div = input.div = display.lineDiv;
    disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize);

    on(div, "paste", function (e) {
      if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }
      // IE doesn't fire input events, so we schedule a read for the pasted content in this way
      if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); }
    });

    on(div, "compositionstart", function (e) {
      this$1.composing = {data: e.data, done: false};
    });
    on(div, "compositionupdate", function (e) {
      if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; }
    });
    on(div, "compositionend", function (e) {
      if (this$1.composing) {
        if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); }
        this$1.composing.done = true;
      }
    });

    on(div, "touchstart", function () { return input.forceCompositionEnd(); });

    on(div, "input", function () {
      if (!this$1.composing) { this$1.readFromDOMSoon(); }
    });

    function onCopyCut(e) {
      if (signalDOMEvent(cm, e)) { return }
      if (cm.somethingSelected()) {
        setLastCopied({lineWise: false, text: cm.getSelections()});
        if (e.type == "cut") { cm.replaceSelection("", null, "cut"); }
      } else if (!cm.options.lineWiseCopyCut) {
        return
      } else {
        var ranges = copyableRanges(cm);
        setLastCopied({lineWise: true, text: ranges.text});
        if (e.type == "cut") {
          cm.operation(function () {
            cm.setSelections(ranges.ranges, 0, sel_dontScroll);
            cm.replaceSelection("", null, "cut");
          });
        }
      }
      if (e.clipboardData) {
        e.clipboardData.clearData();
        var content = lastCopied.text.join("\n");
        // iOS exposes the clipboard API, but seems to discard content inserted into it
        e.clipboardData.setData("Text", content);
        if (e.clipboardData.getData("Text") == content) {
          e.preventDefault();
          return
        }
      }
      // Old-fashioned briefly-focus-a-textarea hack
      var kludge = hiddenTextarea(), te = kludge.firstChild;
      cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
      te.value = lastCopied.text.join("\n");
      var hadFocus = document.activeElement;
      selectInput(te);
      setTimeout(function () {
        cm.display.lineSpace.removeChild(kludge);
        hadFocus.focus();
        if (hadFocus == div) { input.showPrimarySelection(); }
      }, 50);
    }
    on(div, "copy", onCopyCut);
    on(div, "cut", onCopyCut);
  };

  ContentEditableInput.prototype.prepareSelection = function () {
    var result = prepareSelection(this.cm, false);
    result.focus = this.cm.state.focused;
    return result
  };

  ContentEditableInput.prototype.showSelection = function (info, takeFocus) {
    if (!info || !this.cm.display.view.length) { return }
    if (info.focus || takeFocus) { this.showPrimarySelection(); }
    this.showMultipleSelections(info);
  };

  ContentEditableInput.prototype.getSelection = function () {
    return this.cm.display.wrapper.ownerDocument.getSelection()
  };

  ContentEditableInput.prototype.showPrimarySelection = function () {
    var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary();
    var from = prim.from(), to = prim.to();

    if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {
      sel.removeAllRanges();
      return
    }

    var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
    var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset);
    if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
        cmp(minPos(curAnchor, curFocus), from) == 0 &&
        cmp(maxPos(curAnchor, curFocus), to) == 0)
      { return }

    var view = cm.display.view;
    var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||
        {node: view[0].measure.map[2], offset: 0};
    var end = to.line < cm.display.viewTo && posToDOM(cm, to);
    if (!end) {
      var measure = view[view.length - 1].measure;
      var map$$1 = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
      end = {node: map$$1[map$$1.length - 1], offset: map$$1[map$$1.length - 2] - map$$1[map$$1.length - 3]};
    }

    if (!start || !end) {
      sel.removeAllRanges();
      return
    }

    var old = sel.rangeCount && sel.getRangeAt(0), rng;
    try { rng = range(start.node, start.offset, end.offset, end.node); }
    catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
    if (rng) {
      if (!gecko && cm.state.focused) {
        sel.collapse(start.node, start.offset);
        if (!rng.collapsed) {
          sel.removeAllRanges();
          sel.addRange(rng);
        }
      } else {
        sel.removeAllRanges();
        sel.addRange(rng);
      }
      if (old && sel.anchorNode == null) { sel.addRange(old); }
      else if (gecko) { this.startGracePeriod(); }
    }
    this.rememberSelection();
  };

  ContentEditableInput.prototype.startGracePeriod = function () {
      var this$1 = this;

    clearTimeout(this.gracePeriod);
    this.gracePeriod = setTimeout(function () {
      this$1.gracePeriod = false;
      if (this$1.selectionChanged())
        { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); }
    }, 20);
  };

  ContentEditableInput.prototype.showMultipleSelections = function (info) {
    removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
    removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
  };

  ContentEditableInput.prototype.rememberSelection = function () {
    var sel = this.getSelection();
    this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
    this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
  };

  ContentEditableInput.prototype.selectionInEditor = function () {
    var sel = this.getSelection();
    if (!sel.rangeCount) { return false }
    var node = sel.getRangeAt(0).commonAncestorContainer;
    return contains(this.div, node)
  };

  ContentEditableInput.prototype.focus = function () {
    if (this.cm.options.readOnly != "nocursor") {
      if (!this.selectionInEditor())
        { this.showSelection(this.prepareSelection(), true); }
      this.div.focus();
    }
  };
  ContentEditableInput.prototype.blur = function () { this.div.blur(); };
  ContentEditableInput.prototype.getField = function () { return this.div };

  ContentEditableInput.prototype.supportsTouch = function () { return true };

  ContentEditableInput.prototype.receivedFocus = function () {
    var input = this;
    if (this.selectionInEditor())
      { this.pollSelection(); }
    else
      { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); }

    function poll() {
      if (input.cm.state.focused) {
        input.pollSelection();
        input.polling.set(input.cm.options.pollInterval, poll);
      }
    }
    this.polling.set(this.cm.options.pollInterval, poll);
  };

  ContentEditableInput.prototype.selectionChanged = function () {
    var sel = this.getSelection();
    return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
      sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
  };

  ContentEditableInput.prototype.pollSelection = function () {
    if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return }
    var sel = this.getSelection(), cm = this.cm;
    // On Android Chrome (version 56, at least), backspacing into an
    // uneditable block element will put the cursor in that element,
    // and then, because it's not editable, hide the virtual keyboard.
    // Because Android doesn't allow us to actually detect backspace
    // presses in a sane way, this code checks for when that happens
    // and simulates a backspace press in this case.
    if (android && chrome && this.cm.options.gutters.length && isInGutter(sel.anchorNode)) {
      this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs});
      this.blur();
      this.focus();
      return
    }
    if (this.composing) { return }
    this.rememberSelection();
    var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
    var head = domToPos(cm, sel.focusNode, sel.focusOffset);
    if (anchor && head) { runInOp(cm, function () {
      setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
      if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; }
    }); }
  };

  ContentEditableInput.prototype.pollContent = function () {
    if (this.readDOMTimeout != null) {
      clearTimeout(this.readDOMTimeout);
      this.readDOMTimeout = null;
    }

    var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
    var from = sel.from(), to = sel.to();
    if (from.ch == 0 && from.line > cm.firstLine())
      { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); }
    if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())
      { to = Pos(to.line + 1, 0); }
    if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }

    var fromIndex, fromLine, fromNode;
    if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
      fromLine = lineNo(display.view[0].line);
      fromNode = display.view[0].node;
    } else {
      fromLine = lineNo(display.view[fromIndex].line);
      fromNode = display.view[fromIndex - 1].node.nextSibling;
    }
    var toIndex = findViewIndex(cm, to.line);
    var toLine, toNode;
    if (toIndex == display.view.length - 1) {
      toLine = display.viewTo - 1;
      toNode = display.lineDiv.lastChild;
    } else {
      toLine = lineNo(display.view[toIndex + 1].line) - 1;
      toNode = display.view[toIndex + 1].node.previousSibling;
    }

    if (!fromNode) { return false }
    var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
    var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
    while (newText.length > 1 && oldText.length > 1) {
      if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
      else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
      else { break }
    }

    var cutFront = 0, cutEnd = 0;
    var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
    while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
      { ++cutFront; }
    var newBot = lst(newText), oldBot = lst(oldText);
    var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
                             oldBot.length - (oldText.length == 1 ? cutFront : 0));
    while (cutEnd < maxCutEnd &&
           newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
      { ++cutEnd; }
    // Try to move start of change to start of selection if ambiguous
    if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {
      while (cutFront && cutFront > from.ch &&
             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {
        cutFront--;
        cutEnd++;
      }
    }

    newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "");
    newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "");

    var chFrom = Pos(fromLine, cutFront);
    var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
    if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
      replaceRange(cm.doc, newText, chFrom, chTo, "+input");
      return true
    }
  };

  ContentEditableInput.prototype.ensurePolled = function () {
    this.forceCompositionEnd();
  };
  ContentEditableInput.prototype.reset = function () {
    this.forceCompositionEnd();
  };
  ContentEditableInput.prototype.forceCompositionEnd = function () {
    if (!this.composing) { return }
    clearTimeout(this.readDOMTimeout);
    this.composing = null;
    this.updateFromDOM();
    this.div.blur();
    this.div.focus();
  };
  ContentEditableInput.prototype.readFromDOMSoon = function () {
      var this$1 = this;

    if (this.readDOMTimeout != null) { return }
    this.readDOMTimeout = setTimeout(function () {
      this$1.readDOMTimeout = null;
      if (this$1.composing) {
        if (this$1.composing.done) { this$1.composing = null; }
        else { return }
      }
      this$1.updateFromDOM();
    }, 80);
  };

  ContentEditableInput.prototype.updateFromDOM = function () {
      var this$1 = this;

    if (this.cm.isReadOnly() || !this.pollContent())
      { runInOp(this.cm, function () { return regChange(this$1.cm); }); }
  };

  ContentEditableInput.prototype.setUneditable = function (node) {
    node.contentEditable = "false";
  };

  ContentEditableInput.prototype.onKeyPress = function (e) {
    if (e.charCode == 0 || this.composing) { return }
    e.preventDefault();
    if (!this.cm.isReadOnly())
      { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); }
  };

  ContentEditableInput.prototype.readOnlyChanged = function (val) {
    this.div.contentEditable = String(val != "nocursor");
  };

  ContentEditableInput.prototype.onContextMenu = function () {};
  ContentEditableInput.prototype.resetPosition = function () {};

  ContentEditableInput.prototype.needsContentAttribute = true;

  function posToDOM(cm, pos) {
    var view = findViewForLine(cm, pos.line);
    if (!view || view.hidden) { return null }
    var line = getLine(cm.doc, pos.line);
    var info = mapFromLineView(view, line, pos.line);

    var order = getOrder(line, cm.doc.direction), side = "left";
    if (order) {
      var partPos = getBidiPartAt(order, pos.ch);
      side = partPos % 2 ? "right" : "left";
    }
    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
    result.offset = result.collapse == "right" ? result.end : result.start;
    return result
  }

  function isInGutter(node) {
    for (var scan = node; scan; scan = scan.parentNode)
      { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } }
    return false
  }

  function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }

  function domTextBetween(cm, from, to, fromLine, toLine) {
    var text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false;
    function recognizeMarker(id) { return function (marker) { return marker.id == id; } }
    function close() {
      if (closing) {
        text += lineSep;
        if (extraLinebreak) { text += lineSep; }
        closing = extraLinebreak = false;
      }
    }
    function addText(str) {
      if (str) {
        close();
        text += str;
      }
    }
    function walk(node) {
      if (node.nodeType == 1) {
        var cmText = node.getAttribute("cm-text");
        if (cmText) {
          addText(cmText);
          return
        }
        var markerID = node.getAttribute("cm-marker"), range$$1;
        if (markerID) {
          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
          if (found.length && (range$$1 = found[0].find(0)))
            { addText(getBetween(cm.doc, range$$1.from, range$$1.to).join(lineSep)); }
          return
        }
        if (node.getAttribute("contenteditable") == "false") { return }
        var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName);
        if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return }

        if (isBlock) { close(); }
        for (var i = 0; i < node.childNodes.length; i++)
          { walk(node.childNodes[i]); }

        if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; }
        if (isBlock) { closing = true; }
      } else if (node.nodeType == 3) {
        addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " "));
      }
    }
    for (;;) {
      walk(from);
      if (from == to) { break }
      from = from.nextSibling;
      extraLinebreak = false;
    }
    return text
  }

  function domToPos(cm, node, offset) {
    var lineNode;
    if (node == cm.display.lineDiv) {
      lineNode = cm.display.lineDiv.childNodes[offset];
      if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }
      node = null; offset = 0;
    } else {
      for (lineNode = node;; lineNode = lineNode.parentNode) {
        if (!lineNode || lineNode == cm.display.lineDiv) { return null }
        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }
      }
    }
    for (var i = 0; i < cm.display.view.length; i++) {
      var lineView = cm.display.view[i];
      if (lineView.node == lineNode)
        { return locateNodeInLineView(lineView, node, offset) }
    }
  }

  function locateNodeInLineView(lineView, node, offset) {
    var wrapper = lineView.text.firstChild, bad = false;
    if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }
    if (node == wrapper) {
      bad = true;
      node = wrapper.childNodes[offset];
      offset = 0;
      if (!node) {
        var line = lineView.rest ? lst(lineView.rest) : lineView.line;
        return badPos(Pos(lineNo(line), line.text.length), bad)
      }
    }

    var textNode = node.nodeType == 3 ? node : null, topNode = node;
    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
      textNode = node.firstChild;
      if (offset) { offset = textNode.nodeValue.length; }
    }
    while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; }
    var measure = lineView.measure, maps = measure.maps;

    function find(textNode, topNode, offset) {
      for (var i = -1; i < (maps ? maps.length : 0); i++) {
        var map$$1 = i < 0 ? measure.map : maps[i];
        for (var j = 0; j < map$$1.length; j += 3) {
          var curNode = map$$1[j + 2];
          if (curNode == textNode || curNode == topNode) {
            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
            var ch = map$$1[j] + offset;
            if (offset < 0 || curNode != textNode) { ch = map$$1[j + (offset ? 1 : 0)]; }
            return Pos(line, ch)
          }
        }
      }
    }
    var found = find(textNode, topNode, offset);
    if (found) { return badPos(found, bad) }

    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
      found = find(after, after.firstChild, 0);
      if (found)
        { return badPos(Pos(found.line, found.ch - dist), bad) }
      else
        { dist += after.textContent.length; }
    }
    for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {
      found = find(before, before.firstChild, -1);
      if (found)
        { return badPos(Pos(found.line, found.ch + dist$1), bad) }
      else
        { dist$1 += before.textContent.length; }
    }
  }

  // TEXTAREA INPUT STYLE

  var TextareaInput = function(cm) {
    this.cm = cm;
    // See input.poll and input.reset
    this.prevInput = "";

    // Flag that indicates whether we expect input to appear real soon
    // now (after some event like 'keypress' or 'input') and are
    // polling intensively.
    this.pollingFast = false;
    // Self-resetting timeout for the poller
    this.polling = new Delayed();
    // Used to work around IE issue with selection being forgotten when focus moves away from textarea
    this.hasSelection = false;
    this.composing = null;
  };

  TextareaInput.prototype.init = function (display) {
      var this$1 = this;

    var input = this, cm = this.cm;
    this.createField(display);
    var te = this.textarea;

    display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild);

    // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
    if (ios) { te.style.width = "0px"; }

    on(te, "input", function () {
      if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; }
      input.poll();
    });

    on(te, "paste", function (e) {
      if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }

      cm.state.pasteIncoming = true;
      input.fastPoll();
    });

    function prepareCopyCut(e) {
      if (signalDOMEvent(cm, e)) { return }
      if (cm.somethingSelected()) {
        setLastCopied({lineWise: false, text: cm.getSelections()});
      } else if (!cm.options.lineWiseCopyCut) {
        return
      } else {
        var ranges = copyableRanges(cm);
        setLastCopied({lineWise: true, text: ranges.text});
        if (e.type == "cut") {
          cm.setSelections(ranges.ranges, null, sel_dontScroll);
        } else {
          input.prevInput = "";
          te.value = ranges.text.join("\n");
          selectInput(te);
        }
      }
      if (e.type == "cut") { cm.state.cutIncoming = true; }
    }
    on(te, "cut", prepareCopyCut);
    on(te, "copy", prepareCopyCut);

    on(display.scroller, "paste", function (e) {
      if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }
      cm.state.pasteIncoming = true;
      input.focus();
    });

    // Prevent normal selection in the editor (we handle our own)
    on(display.lineSpace, "selectstart", function (e) {
      if (!eventInWidget(display, e)) { e_preventDefault(e); }
    });

    on(te, "compositionstart", function () {
      var start = cm.getCursor("from");
      if (input.composing) { input.composing.range.clear(); }
      input.composing = {
        start: start,
        range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
      };
    });
    on(te, "compositionend", function () {
      if (input.composing) {
        input.poll();
        input.composing.range.clear();
        input.composing = null;
      }
    });
  };

  TextareaInput.prototype.createField = function (_display) {
    // Wraps and hides input textarea
    this.wrapper = hiddenTextarea();
    // The semihidden textarea that is focused when the editor is
    // focused, and receives input.
    this.textarea = this.wrapper.firstChild;
  };

  TextareaInput.prototype.prepareSelection = function () {
    // Redraw the selection and/or cursor
    var cm = this.cm, display = cm.display, doc = cm.doc;
    var result = prepareSelection(cm);

    // Move the hidden textarea near the cursor to prevent scrolling artifacts
    if (cm.options.moveInputWithCursor) {
      var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
      result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
                                          headPos.top + lineOff.top - wrapOff.top));
      result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
                                           headPos.left + lineOff.left - wrapOff.left));
    }

    return result
  };

  TextareaInput.prototype.showSelection = function (drawn) {
    var cm = this.cm, display = cm.display;
    removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
    removeChildrenAndAdd(display.selectionDiv, drawn.selection);
    if (drawn.teTop != null) {
      this.wrapper.style.top = drawn.teTop + "px";
      this.wrapper.style.left = drawn.teLeft + "px";
    }
  };

  // Reset the input to correspond to the selection (or to be empty,
  // when not typing and nothing is selected)
  TextareaInput.prototype.reset = function (typing) {
    if (this.contextMenuPending || this.composing) { return }
    var cm = this.cm;
    if (cm.somethingSelected()) {
      this.prevInput = "";
      var content = cm.getSelection();
      this.textarea.value = content;
      if (cm.state.focused) { selectInput(this.textarea); }
      if (ie && ie_version >= 9) { this.hasSelection = content; }
    } else if (!typing) {
      this.prevInput = this.textarea.value = "";
      if (ie && ie_version >= 9) { this.hasSelection = null; }
    }
  };

  TextareaInput.prototype.getField = function () { return this.textarea };

  TextareaInput.prototype.supportsTouch = function () { return false };

  TextareaInput.prototype.focus = function () {
    if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
      try { this.textarea.focus(); }
      catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
    }
  };

  TextareaInput.prototype.blur = function () { this.textarea.blur(); };

  TextareaInput.prototype.resetPosition = function () {
    this.wrapper.style.top = this.wrapper.style.left = 0;
  };

  TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); };

  // Poll for input changes, using the normal rate of polling. This
  // runs as long as the editor is focused.
  TextareaInput.prototype.slowPoll = function () {
      var this$1 = this;

    if (this.pollingFast) { return }
    this.polling.set(this.cm.options.pollInterval, function () {
      this$1.poll();
      if (this$1.cm.state.focused) { this$1.slowPoll(); }
    });
  };

  // When an event has just come in that is likely to add or change
  // something in the input textarea, we poll faster, to ensure that
  // the change appears on the screen quickly.
  TextareaInput.prototype.fastPoll = function () {
    var missed = false, input = this;
    input.pollingFast = true;
    function p() {
      var changed = input.poll();
      if (!changed && !missed) {missed = true; input.polling.set(60, p);}
      else {input.pollingFast = false; input.slowPoll();}
    }
    input.polling.set(20, p);
  };

  // Read input from the textarea, and update the document to match.
  // When something is selected, it is present in the textarea, and
  // selected (unless it is huge, in which case a placeholder is
  // used). When nothing is selected, the cursor sits after previously
  // seen text (can be empty), which is stored in prevInput (we must
  // not reset the textarea when typing, because that breaks IME).
  TextareaInput.prototype.poll = function () {
      var this$1 = this;

    var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
    // Since this is called a *lot*, try to bail out as cheaply as
    // possible when it is clear that nothing happened. hasSelection
    // will be the case when there is a lot of text in the textarea,
    // in which case reading its value would be expensive.
    if (this.contextMenuPending || !cm.state.focused ||
        (hasSelection(input) && !prevInput && !this.composing) ||
        cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)
      { return false }

    var text = input.value;
    // If nothing changed, bail.
    if (text == prevInput && !cm.somethingSelected()) { return false }
    // Work around nonsensical selection resetting in IE9/10, and
    // inexplicable appearance of private area unicode characters on
    // some key combos in Mac (#2689).
    if (ie && ie_version >= 9 && this.hasSelection === text ||
        mac && /[\uf700-\uf7ff]/.test(text)) {
      cm.display.input.reset();
      return false
    }

    if (cm.doc.sel == cm.display.selForContextMenu) {
      var first = text.charCodeAt(0);
      if (first == 0x200b && !prevInput) { prevInput = "\u200b"; }
      if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") }
    }
    // Find the part of the input that is actually new
    var same = 0, l = Math.min(prevInput.length, text.length);
    while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; }

    runInOp(cm, function () {
      applyTextInput(cm, text.slice(same), prevInput.length - same,
                     null, this$1.composing ? "*compose" : null);

      // Don't leave long text in the textarea, since it makes further polling slow
      if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = ""; }
      else { this$1.prevInput = text; }

      if (this$1.composing) {
        this$1.composing.range.clear();
        this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"),
                                           {className: "CodeMirror-composing"});
      }
    });
    return true
  };

  TextareaInput.prototype.ensurePolled = function () {
    if (this.pollingFast && this.poll()) { this.pollingFast = false; }
  };

  TextareaInput.prototype.onKeyPress = function () {
    if (ie && ie_version >= 9) { this.hasSelection = null; }
    this.fastPoll();
  };

  TextareaInput.prototype.onContextMenu = function (e) {
    var input = this, cm = input.cm, display = cm.display, te = input.textarea;
    if (input.contextMenuPending) { input.contextMenuPending(); }
    var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
    if (!pos || presto) { return } // Opera is difficult.

    // Reset the current text selection only if the click is done outside of the selection
    // and 'resetSelectionOnContextMenu' option is true.
    var reset = cm.options.resetSelectionOnContextMenu;
    if (reset && cm.doc.sel.contains(pos) == -1)
      { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); }

    var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText;
    var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect();
    input.wrapper.style.cssText = "position: static";
    te.style.cssText = "position: absolute; width: 30px; height: 30px;\n      top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n      z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n      outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
    var oldScrollY;
    if (webkit) { oldScrollY = window.scrollY; } // Work around Chrome issue (#2712)
    display.input.focus();
    if (webkit) { window.scrollTo(null, oldScrollY); }
    display.input.reset();
    // Adds "Select all" to context menu in FF
    if (!cm.somethingSelected()) { te.value = input.prevInput = " "; }
    input.contextMenuPending = rehide;
    display.selForContextMenu = cm.doc.sel;
    clearTimeout(display.detectingSelectAll);

    // Select-all will be greyed out if there's nothing to select, so
    // this adds a zero-width space so that we can later check whether
    // it got selected.
    function prepareSelectAllHack() {
      if (te.selectionStart != null) {
        var selected = cm.somethingSelected();
        var extval = "\u200b" + (selected ? te.value : "");
        te.value = "\u21da"; // Used to catch context-menu undo
        te.value = extval;
        input.prevInput = selected ? "" : "\u200b";
        te.selectionStart = 1; te.selectionEnd = extval.length;
        // Re-set this, in case some other handler touched the
        // selection in the meantime.
        display.selForContextMenu = cm.doc.sel;
      }
    }
    function rehide() {
      if (input.contextMenuPending != rehide) { return }
      input.contextMenuPending = false;
      input.wrapper.style.cssText = oldWrapperCSS;
      te.style.cssText = oldCSS;
      if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); }

      // Try to detect the user choosing select-all
      if (te.selectionStart != null) {
        if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); }
        var i = 0, poll = function () {
          if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
              te.selectionEnd > 0 && input.prevInput == "\u200b") {
            operation(cm, selectAll)(cm);
          } else if (i++ < 10) {
            display.detectingSelectAll = setTimeout(poll, 500);
          } else {
            display.selForContextMenu = null;
            display.input.reset();
          }
        };
        display.detectingSelectAll = setTimeout(poll, 200);
      }
    }

    if (ie && ie_version >= 9) { prepareSelectAllHack(); }
    if (captureRightClick) {
      e_stop(e);
      var mouseup = function () {
        off(window, "mouseup", mouseup);
        setTimeout(rehide, 20);
      };
      on(window, "mouseup", mouseup);
    } else {
      setTimeout(rehide, 50);
    }
  };

  TextareaInput.prototype.readOnlyChanged = function (val) {
    if (!val) { this.reset(); }
    this.textarea.disabled = val == "nocursor";
  };

  TextareaInput.prototype.setUneditable = function () {};

  TextareaInput.prototype.needsContentAttribute = false;

  function fromTextArea(textarea, options) {
    options = options ? copyObj(options) : {};
    options.value = textarea.value;
    if (!options.tabindex && textarea.tabIndex)
      { options.tabindex = textarea.tabIndex; }
    if (!options.placeholder && textarea.placeholder)
      { options.placeholder = textarea.placeholder; }
    // Set autofocus to true if this textarea is focused, or if it has
    // autofocus and no other element is focused.
    if (options.autofocus == null) {
      var hasFocus = activeElt();
      options.autofocus = hasFocus == textarea ||
        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
    }

    function save() {textarea.value = cm.getValue();}

    var realSubmit;
    if (textarea.form) {
      on(textarea.form, "submit", save);
      // Deplorable hack to make the submit method do the right thing.
      if (!options.leaveSubmitMethodAlone) {
        var form = textarea.form;
        realSubmit = form.submit;
        try {
          var wrappedSubmit = form.submit = function () {
            save();
            form.submit = realSubmit;
            form.submit();
            form.submit = wrappedSubmit;
          };
        } catch(e) {}
      }
    }

    options.finishInit = function (cm) {
      cm.save = save;
      cm.getTextArea = function () { return textarea; };
      cm.toTextArea = function () {
        cm.toTextArea = isNaN; // Prevent this from being ran twice
        save();
        textarea.parentNode.removeChild(cm.getWrapperElement());
        textarea.style.display = "";
        if (textarea.form) {
          off(textarea.form, "submit", save);
          if (typeof textarea.form.submit == "function")
            { textarea.form.submit = realSubmit; }
        }
      };
    };

    textarea.style.display = "none";
    var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },
      options);
    return cm
  }

  function addLegacyProps(CodeMirror) {
    CodeMirror.off = off;
    CodeMirror.on = on;
    CodeMirror.wheelEventPixels = wheelEventPixels;
    CodeMirror.Doc = Doc;
    CodeMirror.splitLines = splitLinesAuto;
    CodeMirror.countColumn = countColumn;
    CodeMirror.findColumn = findColumn;
    CodeMirror.isWordChar = isWordCharBasic;
    CodeMirror.Pass = Pass;
    CodeMirror.signal = signal;
    CodeMirror.Line = Line;
    CodeMirror.changeEnd = changeEnd;
    CodeMirror.scrollbarModel = scrollbarModel;
    CodeMirror.Pos = Pos;
    CodeMirror.cmpPos = cmp;
    CodeMirror.modes = modes;
    CodeMirror.mimeModes = mimeModes;
    CodeMirror.resolveMode = resolveMode;
    CodeMirror.getMode = getMode;
    CodeMirror.modeExtensions = modeExtensions;
    CodeMirror.extendMode = extendMode;
    CodeMirror.copyState = copyState;
    CodeMirror.startState = startState;
    CodeMirror.innerMode = innerMode;
    CodeMirror.commands = commands;
    CodeMirror.keyMap = keyMap;
    CodeMirror.keyName = keyName;
    CodeMirror.isModifierKey = isModifierKey;
    CodeMirror.lookupKey = lookupKey;
    CodeMirror.normalizeKeyMap = normalizeKeyMap;
    CodeMirror.StringStream = StringStream;
    CodeMirror.SharedTextMarker = SharedTextMarker;
    CodeMirror.TextMarker = TextMarker;
    CodeMirror.LineWidget = LineWidget;
    CodeMirror.e_preventDefault = e_preventDefault;
    CodeMirror.e_stopPropagation = e_stopPropagation;
    CodeMirror.e_stop = e_stop;
    CodeMirror.addClass = addClass;
    CodeMirror.contains = contains;
    CodeMirror.rmClass = rmClass;
    CodeMirror.keyNames = keyNames;
  }

  // EDITOR CONSTRUCTOR

  defineOptions(CodeMirror);

  addEditorMethods(CodeMirror);

  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
  var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
  for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
    { CodeMirror.prototype[prop] = (function(method) {
      return function() {return method.apply(this.doc, arguments)}
    })(Doc.prototype[prop]); } }

  eventMixin(Doc);
  CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};

  // Extra arguments are stored as the mode's dependencies, which is
  // used by (legacy) mechanisms like loadmode.js to automatically
  // load a mode. (Preferred mechanism is the require/define calls.)
  CodeMirror.defineMode = function(name/*, mode, …*/) {
    if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name; }
    defineMode.apply(this, arguments);
  };

  CodeMirror.defineMIME = defineMIME;

  // Minimal default mode.
  CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); });
  CodeMirror.defineMIME("text/plain", "null");

  // EXTENSIONS

  CodeMirror.defineExtension = function (name, func) {
    CodeMirror.prototype[name] = func;
  };
  CodeMirror.defineDocExtension = function (name, func) {
    Doc.prototype[name] = func;
  };

  CodeMirror.fromTextArea = fromTextArea;

  addLegacyProps(CodeMirror);

  CodeMirror.version = "5.43.0";

  return CodeMirror;

})));


/***/ }),
/* 44 */
/*!************************************************!*\
  !*** ./node_modules/decimal.js/decimal.es6.js ***!
  \************************************************/
/*! exports provided: default */
/*! exports used: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/*
 *
 *  decimal.js v7.2.3
 *  An arbitrary-precision Decimal type for JavaScript.
 *  https://github.com/MikeMcl/decimal.js
 *  Copyright (c) 2017 Michael Mclaughlin <M8ch88l@gmail.com>
 *  MIT Licence
 *  https://github.com/MikeMcl/decimal.js/LICENCE
 *
 */


// -----------------------------------  EDITABLE DEFAULTS  ------------------------------------ //


  // The maximum exponent magnitude.
  // The limit on the value of `toExpNeg`, `toExpPos`, `minE` and `maxE`.
var EXP_LIMIT = 9e15,                      // 0 to 9e15

  // The limit on the value of `precision`, and on the value of the first argument to
  // `toDecimalPlaces`, `toExponential`, `toFixed`, `toPrecision` and `toSignificantDigits`.
  MAX_DIGITS = 1e9,                        // 0 to 1e9

  // Base conversion alphabet.
  NUMERALS = '0123456789abcdef',

  // The natural logarithm of 10 (1025 digits).
  ln10 = '2.3025850929940456840179914546843642076011014886287729760333279009675726096773524802359972050895982983419677840422862486334095254650828067566662873690987816894829072083255546808437998948262331985283935053089653777326288461633662222876982198867465436674744042432743651550489343149393914796194044002221051017141748003688084012647080685567743216228355220114804663715659121373450747856947683463616792101806445070648000277502684916746550586856935673420670581136429224554405758925724208241314695689016758940256776311356919292033376587141660230105703089634572075440370847469940168269282808481184289314848524948644871927809676271275775397027668605952496716674183485704422507197965004714951050492214776567636938662976979522110718264549734772662425709429322582798502585509785265383207606726317164309505995087807523710333101197857547331541421808427543863591778117054309827482385045648019095610299291824318237525357709750539565187697510374970888692180205189339507238539205144634197265287286965110862571492198849978748873771345686209167058',

  // Pi (1025 digits).
  pi = '3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989380952572010654858632789',


  // The initial configuration properties of the Decimal constructor.
  defaults = {

    // These values must be integers within the stated ranges (inclusive).
    // Most of these values can be changed at run-time using the `Decimal.config` method.

    // The maximum number of significant digits of the result of a calculation or base conversion.
    // E.g. `Decimal.config({ precision: 20 });`
    precision: 20,                         // 1 to MAX_DIGITS

    // The rounding mode used when rounding to `precision`.
    //
    // ROUND_UP         0 Away from zero.
    // ROUND_DOWN       1 Towards zero.
    // ROUND_CEIL       2 Towards +Infinity.
    // ROUND_FLOOR      3 Towards -Infinity.
    // ROUND_HALF_UP    4 Towards nearest neighbour. If equidistant, up.
    // ROUND_HALF_DOWN  5 Towards nearest neighbour. If equidistant, down.
    // ROUND_HALF_EVEN  6 Towards nearest neighbour. If equidistant, towards even neighbour.
    // ROUND_HALF_CEIL  7 Towards nearest neighbour. If equidistant, towards +Infinity.
    // ROUND_HALF_FLOOR 8 Towards nearest neighbour. If equidistant, towards -Infinity.
    //
    // E.g.
    // `Decimal.rounding = 4;`
    // `Decimal.rounding = Decimal.ROUND_HALF_UP;`
    rounding: 4,                           // 0 to 8

    // The modulo mode used when calculating the modulus: a mod n.
    // The quotient (q = a / n) is calculated according to the corresponding rounding mode.
    // The remainder (r) is calculated as: r = a - n * q.
    //
    // UP         0 The remainder is positive if the dividend is negative, else is negative.
    // DOWN       1 The remainder has the same sign as the dividend (JavaScript %).
    // FLOOR      3 The remainder has the same sign as the divisor (Python %).
    // HALF_EVEN  6 The IEEE 754 remainder function.
    // EUCLID     9 Euclidian division. q = sign(n) * floor(a / abs(n)). Always positive.
    //
    // Truncated division (1), floored division (3), the IEEE 754 remainder (6), and Euclidian
    // division (9) are commonly used for the modulus operation. The other rounding modes can also
    // be used, but they may not give useful results.
    modulo: 1,                             // 0 to 9

    // The exponent value at and beneath which `toString` returns exponential notation.
    // JavaScript numbers: -7
    toExpNeg: -7,                          // 0 to -EXP_LIMIT

    // The exponent value at and above which `toString` returns exponential notation.
    // JavaScript numbers: 21
    toExpPos:  21,                         // 0 to EXP_LIMIT

    // The minimum exponent value, beneath which underflow to zero occurs.
    // JavaScript numbers: -324  (5e-324)
    minE: -EXP_LIMIT,                      // -1 to -EXP_LIMIT

    // The maximum exponent value, above which overflow to Infinity occurs.
    // JavaScript numbers: 308  (1.7976931348623157e+308)
    maxE: EXP_LIMIT,                       // 1 to EXP_LIMIT

    // Whether to use cryptographically-secure random number generation, if available.
    crypto: false                          // true/false
  },


// ----------------------------------- END OF EDITABLE DEFAULTS ------------------------------- //


  Decimal, LN10, PI, inexact, quadrant,
  external = true,

  decimalError = '[DecimalError] ',
  invalidArgument = decimalError + 'Invalid argument: ',
  precisionLimitExceeded = decimalError + 'Precision limit exceeded',
  cryptoUnavailable = decimalError + 'crypto unavailable',

  mathfloor = Math.floor,
  mathpow = Math.pow,

  isBinary = /^0b([01]+(\.[01]*)?|\.[01]+)(p[+-]?\d+)?$/i,
  isHex = /^0x([0-9a-f]+(\.[0-9a-f]*)?|\.[0-9a-f]+)(p[+-]?\d+)?$/i,
  isOctal = /^0o([0-7]+(\.[0-7]*)?|\.[0-7]+)(p[+-]?\d+)?$/i,
  isDecimal = /^(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i,

  BASE = 1e7,
  LOG_BASE = 7,
  MAX_SAFE_INTEGER = 9007199254740991,

  LN10_PRECISION = ln10.length - 1,
  PI_PRECISION = pi.length - 1,

  // Decimal.prototype object
  P = {};


// Decimal prototype methods


/*
 *  absoluteValue             abs
 *  ceil
 *  comparedTo                cmp
 *  cosine                    cos
 *  cubeRoot                  cbrt
 *  decimalPlaces             dp
 *  dividedBy                 div
 *  dividedToIntegerBy        divToInt
 *  equals                    eq
 *  floor
 *  greaterThan               gt
 *  greaterThanOrEqualTo      gte
 *  hyperbolicCosine          cosh
 *  hyperbolicSine            sinh
 *  hyperbolicTangent         tanh
 *  inverseCosine             acos
 *  inverseHyperbolicCosine   acosh
 *  inverseHyperbolicSine     asinh
 *  inverseHyperbolicTangent  atanh
 *  inverseSine               asin
 *  inverseTangent            atan
 *  isFinite
 *  isInteger                 isInt
 *  isNaN
 *  isNegative                isNeg
 *  isPositive                isPos
 *  isZero
 *  lessThan                  lt
 *  lessThanOrEqualTo         lte
 *  logarithm                 log
 *  [maximum]                 [max]
 *  [minimum]                 [min]
 *  minus                     sub
 *  modulo                    mod
 *  naturalExponential        exp
 *  naturalLogarithm          ln
 *  negated                   neg
 *  plus                      add
 *  precision                 sd
 *  round
 *  sine                      sin
 *  squareRoot                sqrt
 *  tangent                   tan
 *  times                     mul
 *  toBinary
 *  toDecimalPlaces           toDP
 *  toExponential
 *  toFixed
 *  toFraction
 *  toHexadecimal             toHex
 *  toNearest
 *  toNumber
 *  toOctal
 *  toPower                   pow
 *  toPrecision
 *  toSignificantDigits       toSD
 *  toString
 *  truncated                 trunc
 *  valueOf                   toJSON
 */


/*
 * Return a new Decimal whose value is the absolute value of this Decimal.
 *
 */
P.absoluteValue = P.abs = function () {
  var x = new this.constructor(this);
  if (x.s < 0) x.s = 1;
  return finalise(x);
};


/*
 * Return a new Decimal whose value is the value of this Decimal rounded to a whole number in the
 * direction of positive Infinity.
 *
 */
P.ceil = function () {
  return finalise(new this.constructor(this), this.e + 1, 2);
};


/*
 * Return
 *   1    if the value of this Decimal is greater than the value of `y`,
 *  -1    if the value of this Decimal is less than the value of `y`,
 *   0    if they have the same value,
 *   NaN  if the value of either Decimal is NaN.
 *
 */
P.comparedTo = P.cmp = function (y) {
  var i, j, xdL, ydL,
    x = this,
    xd = x.d,
    yd = (y = new x.constructor(y)).d,
    xs = x.s,
    ys = y.s;

  // Either NaN or ±Infinity?
  if (!xd || !yd) {
    return !xs || !ys ? NaN : xs !== ys ? xs : xd === yd ? 0 : !xd ^ xs < 0 ? 1 : -1;
  }

  // Either zero?
  if (!xd[0] || !yd[0]) return xd[0] ? xs : yd[0] ? -ys : 0;

  // Signs differ?
  if (xs !== ys) return xs;

  // Compare exponents.
  if (x.e !== y.e) return x.e > y.e ^ xs < 0 ? 1 : -1;

  xdL = xd.length;
  ydL = yd.length;

  // Compare digit by digit.
  for (i = 0, j = xdL < ydL ? xdL : ydL; i < j; ++i) {
    if (xd[i] !== yd[i]) return xd[i] > yd[i] ^ xs < 0 ? 1 : -1;
  }

  // Compare lengths.
  return xdL === ydL ? 0 : xdL > ydL ^ xs < 0 ? 1 : -1;
};


/*
 * Return a new Decimal whose value is the cosine of the value in radians of this Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-1, 1]
 *
 * cos(0)         = 1
 * cos(-0)        = 1
 * cos(Infinity)  = NaN
 * cos(-Infinity) = NaN
 * cos(NaN)       = NaN
 *
 */
P.cosine = P.cos = function () {
  var pr, rm,
    x = this,
    Ctor = x.constructor;

  if (!x.d) return new Ctor(NaN);

  // cos(0) = cos(-0) = 1
  if (!x.d[0]) return new Ctor(1);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + Math.max(x.e, x.sd()) + LOG_BASE;
  Ctor.rounding = 1;

  x = cosine(Ctor, toLessThanHalfPi(Ctor, x));

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return finalise(quadrant == 2 || quadrant == 3 ? x.neg() : x, pr, rm, true);
};


/*
 *
 * Return a new Decimal whose value is the cube root of the value of this Decimal, rounded to
 * `precision` significant digits using rounding mode `rounding`.
 *
 *  cbrt(0)  =  0
 *  cbrt(-0) = -0
 *  cbrt(1)  =  1
 *  cbrt(-1) = -1
 *  cbrt(N)  =  N
 *  cbrt(-I) = -I
 *  cbrt(I)  =  I
 *
 * Math.cbrt(x) = (x < 0 ? -Math.pow(-x, 1/3) : Math.pow(x, 1/3))
 *
 */
P.cubeRoot = P.cbrt = function () {
  var e, m, n, r, rep, s, sd, t, t3, t3plusx,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite() || x.isZero()) return new Ctor(x);
  external = false;

  // Initial estimate.
  s = x.s * Math.pow(x.s * x, 1 / 3);

   // Math.cbrt underflow/overflow?
   // Pass x to Math.pow as integer, then adjust the exponent of the result.
  if (!s || Math.abs(s) == 1 / 0) {
    n = digitsToString(x.d);
    e = x.e;

    // Adjust n exponent so it is a multiple of 3 away from x exponent.
    if (s = (e - n.length + 1) % 3) n += (s == 1 || s == -2 ? '0' : '00');
    s = Math.pow(n, 1 / 3);

    // Rarely, e may be one less than the result exponent value.
    e = mathfloor((e + 1) / 3) - (e % 3 == (e < 0 ? -1 : 2));

    if (s == 1 / 0) {
      n = '5e' + e;
    } else {
      n = s.toExponential();
      n = n.slice(0, n.indexOf('e') + 1) + e;
    }

    r = new Ctor(n);
    r.s = x.s;
  } else {
    r = new Ctor(s.toString());
  }

  sd = (e = Ctor.precision) + 3;

  // Halley's method.
  // TODO? Compare Newton's method.
  for (;;) {
    t = r;
    t3 = t.times(t).times(t);
    t3plusx = t3.plus(x);
    r = divide(t3plusx.plus(x).times(t), t3plusx.plus(t3), sd + 2, 1);

    // TODO? Replace with for-loop and checkRoundingDigits.
    if (digitsToString(t.d).slice(0, sd) === (n = digitsToString(r.d)).slice(0, sd)) {
      n = n.slice(sd - 3, sd + 1);

      // The 4th rounding digit may be in error by -1 so if the 4 rounding digits are 9999 or 4999
      // , i.e. approaching a rounding boundary, continue the iteration.
      if (n == '9999' || !rep && n == '4999') {

        // On the first iteration only, check to see if rounding up gives the exact result as the
        // nines may infinitely repeat.
        if (!rep) {
          finalise(t, e + 1, 0);

          if (t.times(t).times(t).eq(x)) {
            r = t;
            break;
          }
        }

        sd += 4;
        rep = 1;
      } else {

        // If the rounding digits are null, 0{0,4} or 50{0,3}, check for an exact result.
        // If not, then there are further digits and m will be truthy.
        if (!+n || !+n.slice(1) && n.charAt(0) == '5') {

          // Truncate to the first rounding digit.
          finalise(r, e + 1, 1);
          m = !r.times(r).times(r).eq(x);
        }

        break;
      }
    }
  }

  external = true;

  return finalise(r, e, Ctor.rounding, m);
};


/*
 * Return the number of decimal places of the value of this Decimal.
 *
 */
P.decimalPlaces = P.dp = function () {
  var w,
    d = this.d,
    n = NaN;

  if (d) {
    w = d.length - 1;
    n = (w - mathfloor(this.e / LOG_BASE)) * LOG_BASE;

    // Subtract the number of trailing zeros of the last word.
    w = d[w];
    if (w) for (; w % 10 == 0; w /= 10) n--;
    if (n < 0) n = 0;
  }

  return n;
};


/*
 *  n / 0 = I
 *  n / N = N
 *  n / I = 0
 *  0 / n = 0
 *  0 / 0 = N
 *  0 / N = N
 *  0 / I = 0
 *  N / n = N
 *  N / 0 = N
 *  N / N = N
 *  N / I = N
 *  I / n = I
 *  I / 0 = I
 *  I / N = N
 *  I / I = N
 *
 * Return a new Decimal whose value is the value of this Decimal divided by `y`, rounded to
 * `precision` significant digits using rounding mode `rounding`.
 *
 */
P.dividedBy = P.div = function (y) {
  return divide(this, new this.constructor(y));
};


/*
 * Return a new Decimal whose value is the integer part of dividing the value of this Decimal
 * by the value of `y`, rounded to `precision` significant digits using rounding mode `rounding`.
 *
 */
P.dividedToIntegerBy = P.divToInt = function (y) {
  var x = this,
    Ctor = x.constructor;
  return finalise(divide(x, new Ctor(y), 0, 1, 1), Ctor.precision, Ctor.rounding);
};


/*
 * Return true if the value of this Decimal is equal to the value of `y`, otherwise return false.
 *
 */
P.equals = P.eq = function (y) {
  return this.cmp(y) === 0;
};


/*
 * Return a new Decimal whose value is the value of this Decimal rounded to a whole number in the
 * direction of negative Infinity.
 *
 */
P.floor = function () {
  return finalise(new this.constructor(this), this.e + 1, 3);
};


/*
 * Return true if the value of this Decimal is greater than the value of `y`, otherwise return
 * false.
 *
 */
P.greaterThan = P.gt = function (y) {
  return this.cmp(y) > 0;
};


/*
 * Return true if the value of this Decimal is greater than or equal to the value of `y`,
 * otherwise return false.
 *
 */
P.greaterThanOrEqualTo = P.gte = function (y) {
  var k = this.cmp(y);
  return k == 1 || k === 0;
};


/*
 * Return a new Decimal whose value is the hyperbolic cosine of the value in radians of this
 * Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [1, Infinity]
 *
 * cosh(x) = 1 + x^2/2! + x^4/4! + x^6/6! + ...
 *
 * cosh(0)         = 1
 * cosh(-0)        = 1
 * cosh(Infinity)  = Infinity
 * cosh(-Infinity) = Infinity
 * cosh(NaN)       = NaN
 *
 *  x        time taken (ms)   result
 * 1000      9                 9.8503555700852349694e+433
 * 10000     25                4.4034091128314607936e+4342
 * 100000    171               1.4033316802130615897e+43429
 * 1000000   3817              1.5166076984010437725e+434294
 * 10000000  abandoned after 2 minute wait
 *
 * TODO? Compare performance of cosh(x) = 0.5 * (exp(x) + exp(-x))
 *
 */
P.hyperbolicCosine = P.cosh = function () {
  var k, n, pr, rm, len,
    x = this,
    Ctor = x.constructor,
    one = new Ctor(1);

  if (!x.isFinite()) return new Ctor(x.s ? 1 / 0 : NaN);
  if (x.isZero()) return one;

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + Math.max(x.e, x.sd()) + 4;
  Ctor.rounding = 1;
  len = x.d.length;

  // Argument reduction: cos(4x) = 1 - 8cos^2(x) + 8cos^4(x) + 1
  // i.e. cos(x) = 1 - cos^2(x/4)(8 - 8cos^2(x/4))

  // Estimate the optimum number of times to use the argument reduction.
  // TODO? Estimation reused from cosine() and may not be optimal here.
  if (len < 32) {
    k = Math.ceil(len / 3);
    n = Math.pow(4, -k).toString();
  } else {
    k = 16;
    n = '2.3283064365386962890625e-10';
  }

  x = taylorSeries(Ctor, 1, x.times(n), new Ctor(1), true);

  // Reverse argument reduction
  var cosh2_x,
    i = k,
    d8 = new Ctor(8);
  for (; i--;) {
    cosh2_x = x.times(x);
    x = one.minus(cosh2_x.times(d8.minus(cosh2_x.times(d8))));
  }

  return finalise(x, Ctor.precision = pr, Ctor.rounding = rm, true);
};


/*
 * Return a new Decimal whose value is the hyperbolic sine of the value in radians of this
 * Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-Infinity, Infinity]
 *
 * sinh(x) = x + x^3/3! + x^5/5! + x^7/7! + ...
 *
 * sinh(0)         = 0
 * sinh(-0)        = -0
 * sinh(Infinity)  = Infinity
 * sinh(-Infinity) = -Infinity
 * sinh(NaN)       = NaN
 *
 * x        time taken (ms)
 * 10       2 ms
 * 100      5 ms
 * 1000     14 ms
 * 10000    82 ms
 * 100000   886 ms            1.4033316802130615897e+43429
 * 200000   2613 ms
 * 300000   5407 ms
 * 400000   8824 ms
 * 500000   13026 ms          8.7080643612718084129e+217146
 * 1000000  48543 ms
 *
 * TODO? Compare performance of sinh(x) = 0.5 * (exp(x) - exp(-x))
 *
 */
P.hyperbolicSine = P.sinh = function () {
  var k, pr, rm, len,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite() || x.isZero()) return new Ctor(x);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + Math.max(x.e, x.sd()) + 4;
  Ctor.rounding = 1;
  len = x.d.length;

  if (len < 3) {
    x = taylorSeries(Ctor, 2, x, x, true);
  } else {

    // Alternative argument reduction: sinh(3x) = sinh(x)(3 + 4sinh^2(x))
    // i.e. sinh(x) = sinh(x/3)(3 + 4sinh^2(x/3))
    // 3 multiplications and 1 addition

    // Argument reduction: sinh(5x) = sinh(x)(5 + sinh^2(x)(20 + 16sinh^2(x)))
    // i.e. sinh(x) = sinh(x/5)(5 + sinh^2(x/5)(20 + 16sinh^2(x/5)))
    // 4 multiplications and 2 additions

    // Estimate the optimum number of times to use the argument reduction.
    k = 1.4 * Math.sqrt(len);
    k = k > 16 ? 16 : k | 0;

    x = x.times(Math.pow(5, -k));

    x = taylorSeries(Ctor, 2, x, x, true);

    // Reverse argument reduction
    var sinh2_x,
      d5 = new Ctor(5),
      d16 = new Ctor(16),
      d20 = new Ctor(20);
    for (; k--;) {
      sinh2_x = x.times(x);
      x = x.times(d5.plus(sinh2_x.times(d16.times(sinh2_x).plus(d20))));
    }
  }

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return finalise(x, pr, rm, true);
};


/*
 * Return a new Decimal whose value is the hyperbolic tangent of the value in radians of this
 * Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-1, 1]
 *
 * tanh(x) = sinh(x) / cosh(x)
 *
 * tanh(0)         = 0
 * tanh(-0)        = -0
 * tanh(Infinity)  = 1
 * tanh(-Infinity) = -1
 * tanh(NaN)       = NaN
 *
 */
P.hyperbolicTangent = P.tanh = function () {
  var pr, rm,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite()) return new Ctor(x.s);
  if (x.isZero()) return new Ctor(x);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + 7;
  Ctor.rounding = 1;

  return divide(x.sinh(), x.cosh(), Ctor.precision = pr, Ctor.rounding = rm);
};


/*
 * Return a new Decimal whose value is the arccosine (inverse cosine) in radians of the value of
 * this Decimal.
 *
 * Domain: [-1, 1]
 * Range: [0, pi]
 *
 * acos(x) = pi/2 - asin(x)
 *
 * acos(0)       = pi/2
 * acos(-0)      = pi/2
 * acos(1)       = 0
 * acos(-1)      = pi
 * acos(1/2)     = pi/3
 * acos(-1/2)    = 2*pi/3
 * acos(|x| > 1) = NaN
 * acos(NaN)     = NaN
 *
 */
P.inverseCosine = P.acos = function () {
  var halfPi,
    x = this,
    Ctor = x.constructor,
    k = x.abs().cmp(1),
    pr = Ctor.precision,
    rm = Ctor.rounding;

  if (k !== -1) {
    return k === 0
      // |x| is 1
      ? x.isNeg() ? getPi(Ctor, pr, rm) : new Ctor(0)
      // |x| > 1 or x is NaN
      : new Ctor(NaN);
  }

  if (x.isZero()) return getPi(Ctor, pr + 4, rm).times(0.5);

  // TODO? Special case acos(0.5) = pi/3 and acos(-0.5) = 2*pi/3

  Ctor.precision = pr + 6;
  Ctor.rounding = 1;

  x = x.asin();
  halfPi = getPi(Ctor, pr + 4, rm).times(0.5);

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return halfPi.minus(x);
};


/*
 * Return a new Decimal whose value is the inverse of the hyperbolic cosine in radians of the
 * value of this Decimal.
 *
 * Domain: [1, Infinity]
 * Range: [0, Infinity]
 *
 * acosh(x) = ln(x + sqrt(x^2 - 1))
 *
 * acosh(x < 1)     = NaN
 * acosh(NaN)       = NaN
 * acosh(Infinity)  = Infinity
 * acosh(-Infinity) = NaN
 * acosh(0)         = NaN
 * acosh(-0)        = NaN
 * acosh(1)         = 0
 * acosh(-1)        = NaN
 *
 */
P.inverseHyperbolicCosine = P.acosh = function () {
  var pr, rm,
    x = this,
    Ctor = x.constructor;

  if (x.lte(1)) return new Ctor(x.eq(1) ? 0 : NaN);
  if (!x.isFinite()) return new Ctor(x);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + Math.max(Math.abs(x.e), x.sd()) + 4;
  Ctor.rounding = 1;
  external = false;

  x = x.times(x).minus(1).sqrt().plus(x);

  external = true;
  Ctor.precision = pr;
  Ctor.rounding = rm;

  return x.ln();
};


/*
 * Return a new Decimal whose value is the inverse of the hyperbolic sine in radians of the value
 * of this Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-Infinity, Infinity]
 *
 * asinh(x) = ln(x + sqrt(x^2 + 1))
 *
 * asinh(NaN)       = NaN
 * asinh(Infinity)  = Infinity
 * asinh(-Infinity) = -Infinity
 * asinh(0)         = 0
 * asinh(-0)        = -0
 *
 */
P.inverseHyperbolicSine = P.asinh = function () {
  var pr, rm,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite() || x.isZero()) return new Ctor(x);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + 2 * Math.max(Math.abs(x.e), x.sd()) + 6;
  Ctor.rounding = 1;
  external = false;

  x = x.times(x).plus(1).sqrt().plus(x);

  external = true;
  Ctor.precision = pr;
  Ctor.rounding = rm;

  return x.ln();
};


/*
 * Return a new Decimal whose value is the inverse of the hyperbolic tangent in radians of the
 * value of this Decimal.
 *
 * Domain: [-1, 1]
 * Range: [-Infinity, Infinity]
 *
 * atanh(x) = 0.5 * ln((1 + x) / (1 - x))
 *
 * atanh(|x| > 1)   = NaN
 * atanh(NaN)       = NaN
 * atanh(Infinity)  = NaN
 * atanh(-Infinity) = NaN
 * atanh(0)         = 0
 * atanh(-0)        = -0
 * atanh(1)         = Infinity
 * atanh(-1)        = -Infinity
 *
 */
P.inverseHyperbolicTangent = P.atanh = function () {
  var pr, rm, wpr, xsd,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite()) return new Ctor(NaN);
  if (x.e >= 0) return new Ctor(x.abs().eq(1) ? x.s / 0 : x.isZero() ? x : NaN);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  xsd = x.sd();

  if (Math.max(xsd, pr) < 2 * -x.e - 1) return finalise(new Ctor(x), pr, rm, true);

  Ctor.precision = wpr = xsd - x.e;

  x = divide(x.plus(1), new Ctor(1).minus(x), wpr + pr, 1);

  Ctor.precision = pr + 4;
  Ctor.rounding = 1;

  x = x.ln();

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return x.times(0.5);
};


/*
 * Return a new Decimal whose value is the arcsine (inverse sine) in radians of the value of this
 * Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-pi/2, pi/2]
 *
 * asin(x) = 2*atan(x/(1 + sqrt(1 - x^2)))
 *
 * asin(0)       = 0
 * asin(-0)      = -0
 * asin(1/2)     = pi/6
 * asin(-1/2)    = -pi/6
 * asin(1)       = pi/2
 * asin(-1)      = -pi/2
 * asin(|x| > 1) = NaN
 * asin(NaN)     = NaN
 *
 * TODO? Compare performance of Taylor series.
 *
 */
P.inverseSine = P.asin = function () {
  var halfPi, k,
    pr, rm,
    x = this,
    Ctor = x.constructor;

  if (x.isZero()) return new Ctor(x);

  k = x.abs().cmp(1);
  pr = Ctor.precision;
  rm = Ctor.rounding;

  if (k !== -1) {

    // |x| is 1
    if (k === 0) {
      halfPi = getPi(Ctor, pr + 4, rm).times(0.5);
      halfPi.s = x.s;
      return halfPi;
    }

    // |x| > 1 or x is NaN
    return new Ctor(NaN);
  }

  // TODO? Special case asin(1/2) = pi/6 and asin(-1/2) = -pi/6

  Ctor.precision = pr + 6;
  Ctor.rounding = 1;

  x = x.div(new Ctor(1).minus(x.times(x)).sqrt().plus(1)).atan();

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return x.times(2);
};


/*
 * Return a new Decimal whose value is the arctangent (inverse tangent) in radians of the value
 * of this Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-pi/2, pi/2]
 *
 * atan(x) = x - x^3/3 + x^5/5 - x^7/7 + ...
 *
 * atan(0)         = 0
 * atan(-0)        = -0
 * atan(1)         = pi/4
 * atan(-1)        = -pi/4
 * atan(Infinity)  = pi/2
 * atan(-Infinity) = -pi/2
 * atan(NaN)       = NaN
 *
 */
P.inverseTangent = P.atan = function () {
  var i, j, k, n, px, t, r, wpr, x2,
    x = this,
    Ctor = x.constructor,
    pr = Ctor.precision,
    rm = Ctor.rounding;

  if (!x.isFinite()) {
    if (!x.s) return new Ctor(NaN);
    if (pr + 4 <= PI_PRECISION) {
      r = getPi(Ctor, pr + 4, rm).times(0.5);
      r.s = x.s;
      return r;
    }
  } else if (x.isZero()) {
    return new Ctor(x);
  } else if (x.abs().eq(1) && pr + 4 <= PI_PRECISION) {
    r = getPi(Ctor, pr + 4, rm).times(0.25);
    r.s = x.s;
    return r;
  }

  Ctor.precision = wpr = pr + 10;
  Ctor.rounding = 1;

  // TODO? if (x >= 1 && pr <= PI_PRECISION) atan(x) = halfPi * x.s - atan(1 / x);

  // Argument reduction
  // Ensure |x| < 0.42
  // atan(x) = 2 * atan(x / (1 + sqrt(1 + x^2)))

  k = Math.min(28, wpr / LOG_BASE + 2 | 0);

  for (i = k; i; --i) x = x.div(x.times(x).plus(1).sqrt().plus(1));

  external = false;

  j = Math.ceil(wpr / LOG_BASE);
  n = 1;
  x2 = x.times(x);
  r = new Ctor(x);
  px = x;

  // atan(x) = x - x^3/3 + x^5/5 - x^7/7 + ...
  for (; i !== -1;) {
    px = px.times(x2);
    t = r.minus(px.div(n += 2));

    px = px.times(x2);
    r = t.plus(px.div(n += 2));

    if (r.d[j] !== void 0) for (i = j; r.d[i] === t.d[i] && i--;);
  }

  if (k) r = r.times(2 << (k - 1));

  external = true;

  return finalise(r, Ctor.precision = pr, Ctor.rounding = rm, true);
};


/*
 * Return true if the value of this Decimal is a finite number, otherwise return false.
 *
 */
P.isFinite = function () {
  return !!this.d;
};


/*
 * Return true if the value of this Decimal is an integer, otherwise return false.
 *
 */
P.isInteger = P.isInt = function () {
  return !!this.d && mathfloor(this.e / LOG_BASE) > this.d.length - 2;
};


/*
 * Return true if the value of this Decimal is NaN, otherwise return false.
 *
 */
P.isNaN = function () {
  return !this.s;
};


/*
 * Return true if the value of this Decimal is negative, otherwise return false.
 *
 */
P.isNegative = P.isNeg = function () {
  return this.s < 0;
};


/*
 * Return true if the value of this Decimal is positive, otherwise return false.
 *
 */
P.isPositive = P.isPos = function () {
  return this.s > 0;
};


/*
 * Return true if the value of this Decimal is 0 or -0, otherwise return false.
 *
 */
P.isZero = function () {
  return !!this.d && this.d[0] === 0;
};


/*
 * Return true if the value of this Decimal is less than `y`, otherwise return false.
 *
 */
P.lessThan = P.lt = function (y) {
  return this.cmp(y) < 0;
};


/*
 * Return true if the value of this Decimal is less than or equal to `y`, otherwise return false.
 *
 */
P.lessThanOrEqualTo = P.lte = function (y) {
  return this.cmp(y) < 1;
};


/*
 * Return the logarithm of the value of this Decimal to the specified base, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * If no base is specified, return log[10](arg).
 *
 * log[base](arg) = ln(arg) / ln(base)
 *
 * The result will always be correctly rounded if the base of the log is 10, and 'almost always'
 * otherwise:
 *
 * Depending on the rounding mode, the result may be incorrectly rounded if the first fifteen
 * rounding digits are [49]99999999999999 or [50]00000000000000. In that case, the maximum error
 * between the result and the correctly rounded result will be one ulp (unit in the last place).
 *
 * log[-b](a)       = NaN
 * log[0](a)        = NaN
 * log[1](a)        = NaN
 * log[NaN](a)      = NaN
 * log[Infinity](a) = NaN
 * log[b](0)        = -Infinity
 * log[b](-0)       = -Infinity
 * log[b](-a)       = NaN
 * log[b](1)        = 0
 * log[b](Infinity) = Infinity
 * log[b](NaN)      = NaN
 *
 * [base] {number|string|Decimal} The base of the logarithm.
 *
 */
P.logarithm = P.log = function (base) {
  var isBase10, d, denominator, k, inf, num, sd, r,
    arg = this,
    Ctor = arg.constructor,
    pr = Ctor.precision,
    rm = Ctor.rounding,
    guard = 5;

  // Default base is 10.
  if (base == null) {
    base = new Ctor(10);
    isBase10 = true;
  } else {
    base = new Ctor(base);
    d = base.d;

    // Return NaN if base is negative, or non-finite, or is 0 or 1.
    if (base.s < 0 || !d || !d[0] || base.eq(1)) return new Ctor(NaN);

    isBase10 = base.eq(10);
  }

  d = arg.d;

  // Is arg negative, non-finite, 0 or 1?
  if (arg.s < 0 || !d || !d[0] || arg.eq(1)) {
    return new Ctor(d && !d[0] ? -1 / 0 : arg.s != 1 ? NaN : d ? 0 : 1 / 0);
  }

  // The result will have a non-terminating decimal expansion if base is 10 and arg is not an
  // integer power of 10.
  if (isBase10) {
    if (d.length > 1) {
      inf = true;
    } else {
      for (k = d[0]; k % 10 === 0;) k /= 10;
      inf = k !== 1;
    }
  }

  external = false;
  sd = pr + guard;
  num = naturalLogarithm(arg, sd);
  denominator = isBase10 ? getLn10(Ctor, sd + 10) : naturalLogarithm(base, sd);

  // The result will have 5 rounding digits.
  r = divide(num, denominator, sd, 1);

  // If at a rounding boundary, i.e. the result's rounding digits are [49]9999 or [50]0000,
  // calculate 10 further digits.
  //
  // If the result is known to have an infinite decimal expansion, repeat this until it is clear
  // that the result is above or below the boundary. Otherwise, if after calculating the 10
  // further digits, the last 14 are nines, round up and assume the result is exact.
  // Also assume the result is exact if the last 14 are zero.
  //
  // Example of a result that will be incorrectly rounded:
  // log[1048576](4503599627370502) = 2.60000000000000009610279511444746...
  // The above result correctly rounded using ROUND_CEIL to 1 decimal place should be 2.7, but it
  // will be given as 2.6 as there are 15 zeros immediately after the requested decimal place, so
  // the exact result would be assumed to be 2.6, which rounded using ROUND_CEIL to 1 decimal
  // place is still 2.6.
  if (checkRoundingDigits(r.d, k = pr, rm)) {

    do {
      sd += 10;
      num = naturalLogarithm(arg, sd);
      denominator = isBase10 ? getLn10(Ctor, sd + 10) : naturalLogarithm(base, sd);
      r = divide(num, denominator, sd, 1);

      if (!inf) {

        // Check for 14 nines from the 2nd rounding digit, as the first may be 4.
        if (+digitsToString(r.d).slice(k + 1, k + 15) + 1 == 1e14) {
          r = finalise(r, pr + 1, 0);
        }

        break;
      }
    } while (checkRoundingDigits(r.d, k += 10, rm));
  }

  external = true;

  return finalise(r, pr, rm);
};


/*
 * Return a new Decimal whose value is the maximum of the arguments and the value of this Decimal.
 *
 * arguments {number|string|Decimal}
 *
P.max = function () {
  Array.prototype.push.call(arguments, this);
  return maxOrMin(this.constructor, arguments, 'lt');
};
 */


/*
 * Return a new Decimal whose value is the minimum of the arguments and the value of this Decimal.
 *
 * arguments {number|string|Decimal}
 *
P.min = function () {
  Array.prototype.push.call(arguments, this);
  return maxOrMin(this.constructor, arguments, 'gt');
};
 */


/*
 *  n - 0 = n
 *  n - N = N
 *  n - I = -I
 *  0 - n = -n
 *  0 - 0 = 0
 *  0 - N = N
 *  0 - I = -I
 *  N - n = N
 *  N - 0 = N
 *  N - N = N
 *  N - I = N
 *  I - n = I
 *  I - 0 = I
 *  I - N = N
 *  I - I = N
 *
 * Return a new Decimal whose value is the value of this Decimal minus `y`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 */
P.minus = P.sub = function (y) {
  var d, e, i, j, k, len, pr, rm, xd, xe, xLTy, yd,
    x = this,
    Ctor = x.constructor;

  y = new Ctor(y);

  // If either is not finite...
  if (!x.d || !y.d) {

    // Return NaN if either is NaN.
    if (!x.s || !y.s) y = new Ctor(NaN);

    // Return y negated if x is finite and y is ±Infinity.
    else if (x.d) y.s = -y.s;

    // Return x if y is finite and x is ±Infinity.
    // Return x if both are ±Infinity with different signs.
    // Return NaN if both are ±Infinity with the same sign.
    else y = new Ctor(y.d || x.s !== y.s ? x : NaN);

    return y;
  }

  // If signs differ...
  if (x.s != y.s) {
    y.s = -y.s;
    return x.plus(y);
  }

  xd = x.d;
  yd = y.d;
  pr = Ctor.precision;
  rm = Ctor.rounding;

  // If either is zero...
  if (!xd[0] || !yd[0]) {

    // Return y negated if x is zero and y is non-zero.
    if (yd[0]) y.s = -y.s;

    // Return x if y is zero and x is non-zero.
    else if (xd[0]) y = new Ctor(x);

    // Return zero if both are zero.
    // From IEEE 754 (2008) 6.3: 0 - 0 = -0 - -0 = -0 when rounding to -Infinity.
    else return new Ctor(rm === 3 ? -0 : 0);

    return external ? finalise(y, pr, rm) : y;
  }

  // x and y are finite, non-zero numbers with the same sign.

  // Calculate base 1e7 exponents.
  e = mathfloor(y.e / LOG_BASE);
  xe = mathfloor(x.e / LOG_BASE);

  xd = xd.slice();
  k = xe - e;

  // If base 1e7 exponents differ...
  if (k) {
    xLTy = k < 0;

    if (xLTy) {
      d = xd;
      k = -k;
      len = yd.length;
    } else {
      d = yd;
      e = xe;
      len = xd.length;
    }

    // Numbers with massively different exponents would result in a very high number of
    // zeros needing to be prepended, but this can be avoided while still ensuring correct
    // rounding by limiting the number of zeros to `Math.ceil(pr / LOG_BASE) + 2`.
    i = Math.max(Math.ceil(pr / LOG_BASE), len) + 2;

    if (k > i) {
      k = i;
      d.length = 1;
    }

    // Prepend zeros to equalise exponents.
    d.reverse();
    for (i = k; i--;) d.push(0);
    d.reverse();

  // Base 1e7 exponents equal.
  } else {

    // Check digits to determine which is the bigger number.

    i = xd.length;
    len = yd.length;
    xLTy = i < len;
    if (xLTy) len = i;

    for (i = 0; i < len; i++) {
      if (xd[i] != yd[i]) {
        xLTy = xd[i] < yd[i];
        break;
      }
    }

    k = 0;
  }

  if (xLTy) {
    d = xd;
    xd = yd;
    yd = d;
    y.s = -y.s;
  }

  len = xd.length;

  // Append zeros to `xd` if shorter.
  // Don't add zeros to `yd` if shorter as subtraction only needs to start at `yd` length.
  for (i = yd.length - len; i > 0; --i) xd[len++] = 0;

  // Subtract yd from xd.
  for (i = yd.length; i > k;) {

    if (xd[--i] < yd[i]) {
      for (j = i; j && xd[--j] === 0;) xd[j] = BASE - 1;
      --xd[j];
      xd[i] += BASE;
    }

    xd[i] -= yd[i];
  }

  // Remove trailing zeros.
  for (; xd[--len] === 0;) xd.pop();

  // Remove leading zeros and adjust exponent accordingly.
  for (; xd[0] === 0; xd.shift()) --e;

  // Zero?
  if (!xd[0]) return new Ctor(rm === 3 ? -0 : 0);

  y.d = xd;
  y.e = getBase10Exponent(xd, e);

  return external ? finalise(y, pr, rm) : y;
};


/*
 *   n % 0 =  N
 *   n % N =  N
 *   n % I =  n
 *   0 % n =  0
 *  -0 % n = -0
 *   0 % 0 =  N
 *   0 % N =  N
 *   0 % I =  0
 *   N % n =  N
 *   N % 0 =  N
 *   N % N =  N
 *   N % I =  N
 *   I % n =  N
 *   I % 0 =  N
 *   I % N =  N
 *   I % I =  N
 *
 * Return a new Decimal whose value is the value of this Decimal modulo `y`, rounded to
 * `precision` significant digits using rounding mode `rounding`.
 *
 * The result depends on the modulo mode.
 *
 */
P.modulo = P.mod = function (y) {
  var q,
    x = this,
    Ctor = x.constructor;

  y = new Ctor(y);

  // Return NaN if x is ±Infinity or NaN, or y is NaN or ±0.
  if (!x.d || !y.s || y.d && !y.d[0]) return new Ctor(NaN);

  // Return x if y is ±Infinity or x is ±0.
  if (!y.d || x.d && !x.d[0]) {
    return finalise(new Ctor(x), Ctor.precision, Ctor.rounding);
  }

  // Prevent rounding of intermediate calculations.
  external = false;

  if (Ctor.modulo == 9) {

    // Euclidian division: q = sign(y) * floor(x / abs(y))
    // result = x - q * y    where  0 <= result < abs(y)
    q = divide(x, y.abs(), 0, 3, 1);
    q.s *= y.s;
  } else {
    q = divide(x, y, 0, Ctor.modulo, 1);
  }

  q = q.times(y);

  external = true;

  return x.minus(q);
};


/*
 * Return a new Decimal whose value is the natural exponential of the value of this Decimal,
 * i.e. the base e raised to the power the value of this Decimal, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 */
P.naturalExponential = P.exp = function () {
  return naturalExponential(this);
};


/*
 * Return a new Decimal whose value is the natural logarithm of the value of this Decimal,
 * rounded to `precision` significant digits using rounding mode `rounding`.
 *
 */
P.naturalLogarithm = P.ln = function () {
  return naturalLogarithm(this);
};


/*
 * Return a new Decimal whose value is the value of this Decimal negated, i.e. as if multiplied by
 * -1.
 *
 */
P.negated = P.neg = function () {
  var x = new this.constructor(this);
  x.s = -x.s;
  return finalise(x);
};


/*
 *  n + 0 = n
 *  n + N = N
 *  n + I = I
 *  0 + n = n
 *  0 + 0 = 0
 *  0 + N = N
 *  0 + I = I
 *  N + n = N
 *  N + 0 = N
 *  N + N = N
 *  N + I = N
 *  I + n = I
 *  I + 0 = I
 *  I + N = N
 *  I + I = I
 *
 * Return a new Decimal whose value is the value of this Decimal plus `y`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 */
P.plus = P.add = function (y) {
  var carry, d, e, i, k, len, pr, rm, xd, yd,
    x = this,
    Ctor = x.constructor;

  y = new Ctor(y);

  // If either is not finite...
  if (!x.d || !y.d) {

    // Return NaN if either is NaN.
    if (!x.s || !y.s) y = new Ctor(NaN);

    // Return x if y is finite and x is ±Infinity.
    // Return x if both are ±Infinity with the same sign.
    // Return NaN if both are ±Infinity with different signs.
    // Return y if x is finite and y is ±Infinity.
    else if (!x.d) y = new Ctor(y.d || x.s === y.s ? x : NaN);

    return y;
  }

   // If signs differ...
  if (x.s != y.s) {
    y.s = -y.s;
    return x.minus(y);
  }

  xd = x.d;
  yd = y.d;
  pr = Ctor.precision;
  rm = Ctor.rounding;

  // If either is zero...
  if (!xd[0] || !yd[0]) {

    // Return x if y is zero.
    // Return y if y is non-zero.
    if (!yd[0]) y = new Ctor(x);

    return external ? finalise(y, pr, rm) : y;
  }

  // x and y are finite, non-zero numbers with the same sign.

  // Calculate base 1e7 exponents.
  k = mathfloor(x.e / LOG_BASE);
  e = mathfloor(y.e / LOG_BASE);

  xd = xd.slice();
  i = k - e;

  // If base 1e7 exponents differ...
  if (i) {

    if (i < 0) {
      d = xd;
      i = -i;
      len = yd.length;
    } else {
      d = yd;
      e = k;
      len = xd.length;
    }

    // Limit number of zeros prepended to max(ceil(pr / LOG_BASE), len) + 1.
    k = Math.ceil(pr / LOG_BASE);
    len = k > len ? k + 1 : len + 1;

    if (i > len) {
      i = len;
      d.length = 1;
    }

    // Prepend zeros to equalise exponents. Note: Faster to use reverse then do unshifts.
    d.reverse();
    for (; i--;) d.push(0);
    d.reverse();
  }

  len = xd.length;
  i = yd.length;

  // If yd is longer than xd, swap xd and yd so xd points to the longer array.
  if (len - i < 0) {
    i = len;
    d = yd;
    yd = xd;
    xd = d;
  }

  // Only start adding at yd.length - 1 as the further digits of xd can be left as they are.
  for (carry = 0; i;) {
    carry = (xd[--i] = xd[i] + yd[i] + carry) / BASE | 0;
    xd[i] %= BASE;
  }

  if (carry) {
    xd.unshift(carry);
    ++e;
  }

  // Remove trailing zeros.
  // No need to check for zero, as +x + +y != 0 && -x + -y != 0
  for (len = xd.length; xd[--len] == 0;) xd.pop();

  y.d = xd;
  y.e = getBase10Exponent(xd, e);

  return external ? finalise(y, pr, rm) : y;
};


/*
 * Return the number of significant digits of the value of this Decimal.
 *
 * [z] {boolean|number} Whether to count integer-part trailing zeros: true, false, 1 or 0.
 *
 */
P.precision = P.sd = function (z) {
  var k,
    x = this;

  if (z !== void 0 && z !== !!z && z !== 1 && z !== 0) throw Error(invalidArgument + z);

  if (x.d) {
    k = getPrecision(x.d);
    if (z && x.e + 1 > k) k = x.e + 1;
  } else {
    k = NaN;
  }

  return k;
};


/*
 * Return a new Decimal whose value is the value of this Decimal rounded to a whole number using
 * rounding mode `rounding`.
 *
 */
P.round = function () {
  var x = this,
    Ctor = x.constructor;

  return finalise(new Ctor(x), x.e + 1, Ctor.rounding);
};


/*
 * Return a new Decimal whose value is the sine of the value in radians of this Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-1, 1]
 *
 * sin(x) = x - x^3/3! + x^5/5! - ...
 *
 * sin(0)         = 0
 * sin(-0)        = -0
 * sin(Infinity)  = NaN
 * sin(-Infinity) = NaN
 * sin(NaN)       = NaN
 *
 */
P.sine = P.sin = function () {
  var pr, rm,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite()) return new Ctor(NaN);
  if (x.isZero()) return new Ctor(x);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + Math.max(x.e, x.sd()) + LOG_BASE;
  Ctor.rounding = 1;

  x = sine(Ctor, toLessThanHalfPi(Ctor, x));

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return finalise(quadrant > 2 ? x.neg() : x, pr, rm, true);
};


/*
 * Return a new Decimal whose value is the square root of this Decimal, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 *  sqrt(-n) =  N
 *  sqrt(N)  =  N
 *  sqrt(-I) =  N
 *  sqrt(I)  =  I
 *  sqrt(0)  =  0
 *  sqrt(-0) = -0
 *
 */
P.squareRoot = P.sqrt = function () {
  var m, n, sd, r, rep, t,
    x = this,
    d = x.d,
    e = x.e,
    s = x.s,
    Ctor = x.constructor;

  // Negative/NaN/Infinity/zero?
  if (s !== 1 || !d || !d[0]) {
    return new Ctor(!s || s < 0 && (!d || d[0]) ? NaN : d ? x : 1 / 0);
  }

  external = false;

  // Initial estimate.
  s = Math.sqrt(+x);

  // Math.sqrt underflow/overflow?
  // Pass x to Math.sqrt as integer, then adjust the exponent of the result.
  if (s == 0 || s == 1 / 0) {
    n = digitsToString(d);

    if ((n.length + e) % 2 == 0) n += '0';
    s = Math.sqrt(n);
    e = mathfloor((e + 1) / 2) - (e < 0 || e % 2);

    if (s == 1 / 0) {
      n = '1e' + e;
    } else {
      n = s.toExponential();
      n = n.slice(0, n.indexOf('e') + 1) + e;
    }

    r = new Ctor(n);
  } else {
    r = new Ctor(s.toString());
  }

  sd = (e = Ctor.precision) + 3;

  // Newton-Raphson iteration.
  for (;;) {
    t = r;
    r = t.plus(divide(x, t, sd + 2, 1)).times(0.5);

    // TODO? Replace with for-loop and checkRoundingDigits.
    if (digitsToString(t.d).slice(0, sd) === (n = digitsToString(r.d)).slice(0, sd)) {
      n = n.slice(sd - 3, sd + 1);

      // The 4th rounding digit may be in error by -1 so if the 4 rounding digits are 9999 or
      // 4999, i.e. approaching a rounding boundary, continue the iteration.
      if (n == '9999' || !rep && n == '4999') {

        // On the first iteration only, check to see if rounding up gives the exact result as the
        // nines may infinitely repeat.
        if (!rep) {
          finalise(t, e + 1, 0);

          if (t.times(t).eq(x)) {
            r = t;
            break;
          }
        }

        sd += 4;
        rep = 1;
      } else {

        // If the rounding digits are null, 0{0,4} or 50{0,3}, check for an exact result.
        // If not, then there are further digits and m will be truthy.
        if (!+n || !+n.slice(1) && n.charAt(0) == '5') {

          // Truncate to the first rounding digit.
          finalise(r, e + 1, 1);
          m = !r.times(r).eq(x);
        }

        break;
      }
    }
  }

  external = true;

  return finalise(r, e, Ctor.rounding, m);
};


/*
 * Return a new Decimal whose value is the tangent of the value in radians of this Decimal.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-Infinity, Infinity]
 *
 * tan(0)         = 0
 * tan(-0)        = -0
 * tan(Infinity)  = NaN
 * tan(-Infinity) = NaN
 * tan(NaN)       = NaN
 *
 */
P.tangent = P.tan = function () {
  var pr, rm,
    x = this,
    Ctor = x.constructor;

  if (!x.isFinite()) return new Ctor(NaN);
  if (x.isZero()) return new Ctor(x);

  pr = Ctor.precision;
  rm = Ctor.rounding;
  Ctor.precision = pr + 10;
  Ctor.rounding = 1;

  x = x.sin();
  x.s = 1;
  x = divide(x, new Ctor(1).minus(x.times(x)).sqrt(), pr + 10, 0);

  Ctor.precision = pr;
  Ctor.rounding = rm;

  return finalise(quadrant == 2 || quadrant == 4 ? x.neg() : x, pr, rm, true);
};


/*
 *  n * 0 = 0
 *  n * N = N
 *  n * I = I
 *  0 * n = 0
 *  0 * 0 = 0
 *  0 * N = N
 *  0 * I = N
 *  N * n = N
 *  N * 0 = N
 *  N * N = N
 *  N * I = N
 *  I * n = I
 *  I * 0 = N
 *  I * N = N
 *  I * I = I
 *
 * Return a new Decimal whose value is this Decimal times `y`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 */
P.times = P.mul = function (y) {
  var carry, e, i, k, r, rL, t, xdL, ydL,
    x = this,
    Ctor = x.constructor,
    xd = x.d,
    yd = (y = new Ctor(y)).d;

  y.s *= x.s;

   // If either is NaN, ±Infinity or ±0...
  if (!xd || !xd[0] || !yd || !yd[0]) {

    return new Ctor(!y.s || xd && !xd[0] && !yd || yd && !yd[0] && !xd

      // Return NaN if either is NaN.
      // Return NaN if x is ±0 and y is ±Infinity, or y is ±0 and x is ±Infinity.
      ? NaN

      // Return ±Infinity if either is ±Infinity.
      // Return ±0 if either is ±0.
      : !xd || !yd ? y.s / 0 : y.s * 0);
  }

  e = mathfloor(x.e / LOG_BASE) + mathfloor(y.e / LOG_BASE);
  xdL = xd.length;
  ydL = yd.length;

  // Ensure xd points to the longer array.
  if (xdL < ydL) {
    r = xd;
    xd = yd;
    yd = r;
    rL = xdL;
    xdL = ydL;
    ydL = rL;
  }

  // Initialise the result array with zeros.
  r = [];
  rL = xdL + ydL;
  for (i = rL; i--;) r.push(0);

  // Multiply!
  for (i = ydL; --i >= 0;) {
    carry = 0;
    for (k = xdL + i; k > i;) {
      t = r[k] + yd[i] * xd[k - i - 1] + carry;
      r[k--] = t % BASE | 0;
      carry = t / BASE | 0;
    }

    r[k] = (r[k] + carry) % BASE | 0;
  }

  // Remove trailing zeros.
  for (; !r[--rL];) r.pop();

  if (carry) ++e;
  else r.shift();

  y.d = r;
  y.e = getBase10Exponent(r, e);

  return external ? finalise(y, Ctor.precision, Ctor.rounding) : y;
};


/*
 * Return a string representing the value of this Decimal in base 2, round to `sd` significant
 * digits using rounding mode `rm`.
 *
 * If the optional `sd` argument is present then return binary exponential notation.
 *
 * [sd] {number} Significant digits. Integer, 1 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 */
P.toBinary = function (sd, rm) {
  return toStringBinary(this, 2, sd, rm);
};


/*
 * Return a new Decimal whose value is the value of this Decimal rounded to a maximum of `dp`
 * decimal places using rounding mode `rm` or `rounding` if `rm` is omitted.
 *
 * If `dp` is omitted, return a new Decimal whose value is the value of this Decimal.
 *
 * [dp] {number} Decimal places. Integer, 0 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 */
P.toDecimalPlaces = P.toDP = function (dp, rm) {
  var x = this,
    Ctor = x.constructor;

  x = new Ctor(x);
  if (dp === void 0) return x;

  checkInt32(dp, 0, MAX_DIGITS);

  if (rm === void 0) rm = Ctor.rounding;
  else checkInt32(rm, 0, 8);

  return finalise(x, dp + x.e + 1, rm);
};


/*
 * Return a string representing the value of this Decimal in exponential notation rounded to
 * `dp` fixed decimal places using rounding mode `rounding`.
 *
 * [dp] {number} Decimal places. Integer, 0 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 */
P.toExponential = function (dp, rm) {
  var str,
    x = this,
    Ctor = x.constructor;

  if (dp === void 0) {
    str = finiteToString(x, true);
  } else {
    checkInt32(dp, 0, MAX_DIGITS);

    if (rm === void 0) rm = Ctor.rounding;
    else checkInt32(rm, 0, 8);

    x = finalise(new Ctor(x), dp + 1, rm);
    str = finiteToString(x, true, dp + 1);
  }

  return x.isNeg() && !x.isZero() ? '-' + str : str;
};


/*
 * Return a string representing the value of this Decimal in normal (fixed-point) notation to
 * `dp` fixed decimal places and rounded using rounding mode `rm` or `rounding` if `rm` is
 * omitted.
 *
 * As with JavaScript numbers, (-0).toFixed(0) is '0', but e.g. (-0.00001).toFixed(0) is '-0'.
 *
 * [dp] {number} Decimal places. Integer, 0 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 * (-0).toFixed(0) is '0', but (-0.1).toFixed(0) is '-0'.
 * (-0).toFixed(1) is '0.0', but (-0.01).toFixed(1) is '-0.0'.
 * (-0).toFixed(3) is '0.000'.
 * (-0.5).toFixed(0) is '-0'.
 *
 */
P.toFixed = function (dp, rm) {
  var str, y,
    x = this,
    Ctor = x.constructor;

  if (dp === void 0) {
    str = finiteToString(x);
  } else {
    checkInt32(dp, 0, MAX_DIGITS);

    if (rm === void 0) rm = Ctor.rounding;
    else checkInt32(rm, 0, 8);

    y = finalise(new Ctor(x), dp + x.e + 1, rm);
    str = finiteToString(y, false, dp + y.e + 1);
  }

  // To determine whether to add the minus sign look at the value before it was rounded,
  // i.e. look at `x` rather than `y`.
  return x.isNeg() && !x.isZero() ? '-' + str : str;
};


/*
 * Return an array representing the value of this Decimal as a simple fraction with an integer
 * numerator and an integer denominator.
 *
 * The denominator will be a positive non-zero value less than or equal to the specified maximum
 * denominator. If a maximum denominator is not specified, the denominator will be the lowest
 * value necessary to represent the number exactly.
 *
 * [maxD] {number|string|Decimal} Maximum denominator. Integer >= 1 and < Infinity.
 *
 */
P.toFraction = function (maxD) {
  var d, d0, d1, d2, e, k, n, n0, n1, pr, q, r,
    x = this,
    xd = x.d,
    Ctor = x.constructor;

  if (!xd) return new Ctor(x);

  n1 = d0 = new Ctor(1);
  d1 = n0 = new Ctor(0);

  d = new Ctor(d1);
  e = d.e = getPrecision(xd) - x.e - 1;
  k = e % LOG_BASE;
  d.d[0] = mathpow(10, k < 0 ? LOG_BASE + k : k);

  if (maxD == null) {

    // d is 10**e, the minimum max-denominator needed.
    maxD = e > 0 ? d : n1;
  } else {
    n = new Ctor(maxD);
    if (!n.isInt() || n.lt(n1)) throw Error(invalidArgument + n);
    maxD = n.gt(d) ? (e > 0 ? d : n1) : n;
  }

  external = false;
  n = new Ctor(digitsToString(xd));
  pr = Ctor.precision;
  Ctor.precision = e = xd.length * LOG_BASE * 2;

  for (;;)  {
    q = divide(n, d, 0, 1, 1);
    d2 = d0.plus(q.times(d1));
    if (d2.cmp(maxD) == 1) break;
    d0 = d1;
    d1 = d2;
    d2 = n1;
    n1 = n0.plus(q.times(d2));
    n0 = d2;
    d2 = d;
    d = n.minus(q.times(d2));
    n = d2;
  }

  d2 = divide(maxD.minus(d0), d1, 0, 1, 1);
  n0 = n0.plus(d2.times(n1));
  d0 = d0.plus(d2.times(d1));
  n0.s = n1.s = x.s;

  // Determine which fraction is closer to x, n0/d0 or n1/d1?
  r = divide(n1, d1, e, 1).minus(x).abs().cmp(divide(n0, d0, e, 1).minus(x).abs()) < 1
      ? [n1, d1] : [n0, d0];

  Ctor.precision = pr;
  external = true;

  return r;
};


/*
 * Return a string representing the value of this Decimal in base 16, round to `sd` significant
 * digits using rounding mode `rm`.
 *
 * If the optional `sd` argument is present then return binary exponential notation.
 *
 * [sd] {number} Significant digits. Integer, 1 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 */
P.toHexadecimal = P.toHex = function (sd, rm) {
  return toStringBinary(this, 16, sd, rm);
};



/*
 * Returns a new Decimal whose value is the nearest multiple of the magnitude of `y` to the value
 * of this Decimal.
 *
 * If the value of this Decimal is equidistant from two multiples of `y`, the rounding mode `rm`,
 * or `Decimal.rounding` if `rm` is omitted, determines the direction of the nearest multiple.
 *
 * In the context of this method, rounding mode 4 (ROUND_HALF_UP) is the same as rounding mode 0
 * (ROUND_UP), and so on.
 *
 * The return value will always have the same sign as this Decimal, unless either this Decimal
 * or `y` is NaN, in which case the return value will be also be NaN.
 *
 * The return value is not affected by the value of `precision`.
 *
 * y {number|string|Decimal} The magnitude to round to a multiple of.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 * 'toNearest() rounding mode not an integer: {rm}'
 * 'toNearest() rounding mode out of range: {rm}'
 *
 */
P.toNearest = function (y, rm) {
  var x = this,
    Ctor = x.constructor;

  x = new Ctor(x);

  if (y == null) {

    // If x is not finite, return x.
    if (!x.d) return x;

    y = new Ctor(1);
    rm = Ctor.rounding;
  } else {
    y = new Ctor(y);
    if (rm !== void 0) checkInt32(rm, 0, 8);

    // If x is not finite, return x if y is not NaN, else NaN.
    if (!x.d) return y.s ? x : y;

    // If y is not finite, return Infinity with the sign of x if y is Infinity, else NaN.
    if (!y.d) {
      if (y.s) y.s = x.s;
      return y;
    }
  }

  // If y is not zero, calculate the nearest multiple of y to x.
  if (y.d[0]) {
    external = false;
    if (rm < 4) rm = [4, 5, 7, 8][rm];
    x = divide(x, y, 0, rm, 1).times(y);
    external = true;
    finalise(x);

  // If y is zero, return zero with the sign of x.
  } else {
    y.s = x.s;
    x = y;
  }

  return x;
};


/*
 * Return the value of this Decimal converted to a number primitive.
 * Zero keeps its sign.
 *
 */
P.toNumber = function () {
  return +this;
};


/*
 * Return a string representing the value of this Decimal in base 8, round to `sd` significant
 * digits using rounding mode `rm`.
 *
 * If the optional `sd` argument is present then return binary exponential notation.
 *
 * [sd] {number} Significant digits. Integer, 1 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 */
P.toOctal = function (sd, rm) {
  return toStringBinary(this, 8, sd, rm);
};


/*
 * Return a new Decimal whose value is the value of this Decimal raised to the power `y`, rounded
 * to `precision` significant digits using rounding mode `rounding`.
 *
 * ECMAScript compliant.
 *
 *   pow(x, NaN)                           = NaN
 *   pow(x, ±0)                            = 1

 *   pow(NaN, non-zero)                    = NaN
 *   pow(abs(x) > 1, +Infinity)            = +Infinity
 *   pow(abs(x) > 1, -Infinity)            = +0
 *   pow(abs(x) == 1, ±Infinity)           = NaN
 *   pow(abs(x) < 1, +Infinity)            = +0
 *   pow(abs(x) < 1, -Infinity)            = +Infinity
 *   pow(+Infinity, y > 0)                 = +Infinity
 *   pow(+Infinity, y < 0)                 = +0
 *   pow(-Infinity, odd integer > 0)       = -Infinity
 *   pow(-Infinity, even integer > 0)      = +Infinity
 *   pow(-Infinity, odd integer < 0)       = -0
 *   pow(-Infinity, even integer < 0)      = +0
 *   pow(+0, y > 0)                        = +0
 *   pow(+0, y < 0)                        = +Infinity
 *   pow(-0, odd integer > 0)              = -0
 *   pow(-0, even integer > 0)             = +0
 *   pow(-0, odd integer < 0)              = -Infinity
 *   pow(-0, even integer < 0)             = +Infinity
 *   pow(finite x < 0, finite non-integer) = NaN
 *
 * For non-integer or very large exponents pow(x, y) is calculated using
 *
 *   x^y = exp(y*ln(x))
 *
 * Assuming the first 15 rounding digits are each equally likely to be any digit 0-9, the
 * probability of an incorrectly rounded result
 * P([49]9{14} | [50]0{14}) = 2 * 0.2 * 10^-14 = 4e-15 = 1/2.5e+14
 * i.e. 1 in 250,000,000,000,000
 *
 * If a result is incorrectly rounded the maximum error will be 1 ulp (unit in last place).
 *
 * y {number|string|Decimal} The power to which to raise this Decimal.
 *
 */
P.toPower = P.pow = function (y) {
  var e, k, pr, r, rm, s,
    x = this,
    Ctor = x.constructor,
    yn = +(y = new Ctor(y));

  // Either ±Infinity, NaN or ±0?
  if (!x.d || !y.d || !x.d[0] || !y.d[0]) return new Ctor(mathpow(+x, yn));

  x = new Ctor(x);

  if (x.eq(1)) return x;

  pr = Ctor.precision;
  rm = Ctor.rounding;

  if (y.eq(1)) return finalise(x, pr, rm);

  // y exponent
  e = mathfloor(y.e / LOG_BASE);

  // If y is a small integer use the 'exponentiation by squaring' algorithm.
  if (e >= y.d.length - 1 && (k = yn < 0 ? -yn : yn) <= MAX_SAFE_INTEGER) {
    r = intPow(Ctor, x, k, pr);
    return y.s < 0 ? new Ctor(1).div(r) : finalise(r, pr, rm);
  }

  s = x.s;

  // if x is negative
  if (s < 0) {

    // if y is not an integer
    if (e < y.d.length - 1) return new Ctor(NaN);

    // Result is positive if x is negative and the last digit of integer y is even.
    if ((y.d[e] & 1) == 0) s = 1;

    // if x.eq(-1)
    if (x.e == 0 && x.d[0] == 1 && x.d.length == 1) {
      x.s = s;
      return x;
    }
  }

  // Estimate result exponent.
  // x^y = 10^e,  where e = y * log10(x)
  // log10(x) = log10(x_significand) + x_exponent
  // log10(x_significand) = ln(x_significand) / ln(10)
  k = mathpow(+x, yn);
  e = k == 0 || !isFinite(k)
    ? mathfloor(yn * (Math.log('0.' + digitsToString(x.d)) / Math.LN10 + x.e + 1))
    : new Ctor(k + '').e;

  // Exponent estimate may be incorrect e.g. x: 0.999999999999999999, y: 2.29, e: 0, r.e: -1.

  // Overflow/underflow?
  if (e > Ctor.maxE + 1 || e < Ctor.minE - 1) return new Ctor(e > 0 ? s / 0 : 0);

  external = false;
  Ctor.rounding = x.s = 1;

  // Estimate the extra guard digits needed to ensure five correct rounding digits from
  // naturalLogarithm(x). Example of failure without these extra digits (precision: 10):
  // new Decimal(2.32456).pow('2087987436534566.46411')
  // should be 1.162377823e+764914905173815, but is 1.162355823e+764914905173815
  k = Math.min(12, (e + '').length);

  // r = x^y = exp(y*ln(x))
  r = naturalExponential(y.times(naturalLogarithm(x, pr + k)), pr);

  // r may be Infinity, e.g. (0.9999999999999999).pow(-1e+40)
  if (r.d) {

    // Truncate to the required precision plus five rounding digits.
    r = finalise(r, pr + 5, 1);

    // If the rounding digits are [49]9999 or [50]0000 increase the precision by 10 and recalculate
    // the result.
    if (checkRoundingDigits(r.d, pr, rm)) {
      e = pr + 10;

      // Truncate to the increased precision plus five rounding digits.
      r = finalise(naturalExponential(y.times(naturalLogarithm(x, e + k)), e), e + 5, 1);

      // Check for 14 nines from the 2nd rounding digit (the first rounding digit may be 4 or 9).
      if (+digitsToString(r.d).slice(pr + 1, pr + 15) + 1 == 1e14) {
        r = finalise(r, pr + 1, 0);
      }
    }
  }

  r.s = s;
  external = true;
  Ctor.rounding = rm;

  return finalise(r, pr, rm);
};


/*
 * Return a string representing the value of this Decimal rounded to `sd` significant digits
 * using rounding mode `rounding`.
 *
 * Return exponential notation if `sd` is less than the number of digits necessary to represent
 * the integer part of the value in normal notation.
 *
 * [sd] {number} Significant digits. Integer, 1 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 */
P.toPrecision = function (sd, rm) {
  var str,
    x = this,
    Ctor = x.constructor;

  if (sd === void 0) {
    str = finiteToString(x, x.e <= Ctor.toExpNeg || x.e >= Ctor.toExpPos);
  } else {
    checkInt32(sd, 1, MAX_DIGITS);

    if (rm === void 0) rm = Ctor.rounding;
    else checkInt32(rm, 0, 8);

    x = finalise(new Ctor(x), sd, rm);
    str = finiteToString(x, sd <= x.e || x.e <= Ctor.toExpNeg, sd);
  }

  return x.isNeg() && !x.isZero() ? '-' + str : str;
};


/*
 * Return a new Decimal whose value is the value of this Decimal rounded to a maximum of `sd`
 * significant digits using rounding mode `rm`, or to `precision` and `rounding` respectively if
 * omitted.
 *
 * [sd] {number} Significant digits. Integer, 1 to MAX_DIGITS inclusive.
 * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
 *
 * 'toSD() digits out of range: {sd}'
 * 'toSD() digits not an integer: {sd}'
 * 'toSD() rounding mode not an integer: {rm}'
 * 'toSD() rounding mode out of range: {rm}'
 *
 */
P.toSignificantDigits = P.toSD = function (sd, rm) {
  var x = this,
    Ctor = x.constructor;

  if (sd === void 0) {
    sd = Ctor.precision;
    rm = Ctor.rounding;
  } else {
    checkInt32(sd, 1, MAX_DIGITS);

    if (rm === void 0) rm = Ctor.rounding;
    else checkInt32(rm, 0, 8);
  }

  return finalise(new Ctor(x), sd, rm);
};


/*
 * Return a string representing the value of this Decimal.
 *
 * Return exponential notation if this Decimal has a positive exponent equal to or greater than
 * `toExpPos`, or a negative exponent equal to or less than `toExpNeg`.
 *
 */
P.toString = function () {
  var x = this,
    Ctor = x.constructor,
    str = finiteToString(x, x.e <= Ctor.toExpNeg || x.e >= Ctor.toExpPos);

  return x.isNeg() && !x.isZero() ? '-' + str : str;
};


/*
 * Return a new Decimal whose value is the value of this Decimal truncated to a whole number.
 *
 */
P.truncated = P.trunc = function () {
  return finalise(new this.constructor(this), this.e + 1, 1);
};


/*
 * Return a string representing the value of this Decimal.
 * Unlike `toString`, negative zero will include the minus sign.
 *
 */
P.valueOf = P.toJSON = function () {
  var x = this,
    Ctor = x.constructor,
    str = finiteToString(x, x.e <= Ctor.toExpNeg || x.e >= Ctor.toExpPos);

  return x.isNeg() ? '-' + str : str;
};


/*
// Add aliases to match BigDecimal method names.
// P.add = P.plus;
P.subtract = P.minus;
P.multiply = P.times;
P.divide = P.div;
P.remainder = P.mod;
P.compareTo = P.cmp;
P.negate = P.neg;
 */


// Helper functions for Decimal.prototype (P) and/or Decimal methods, and their callers.


/*
 *  digitsToString           P.cubeRoot, P.logarithm, P.squareRoot, P.toFraction, P.toPower,
 *                           finiteToString, naturalExponential, naturalLogarithm
 *  checkInt32               P.toDecimalPlaces, P.toExponential, P.toFixed, P.toNearest,
 *                           P.toPrecision, P.toSignificantDigits, toStringBinary, random
 *  checkRoundingDigits      P.logarithm, P.toPower, naturalExponential, naturalLogarithm
 *  convertBase              toStringBinary, parseOther
 *  cos                      P.cos
 *  divide                   P.atanh, P.cubeRoot, P.dividedBy, P.dividedToIntegerBy,
 *                           P.logarithm, P.modulo, P.squareRoot, P.tan, P.tanh, P.toFraction,
 *                           P.toNearest, toStringBinary, naturalExponential, naturalLogarithm,
 *                           taylorSeries, atan2, parseOther
 *  finalise                 P.absoluteValue, P.atan, P.atanh, P.ceil, P.cos, P.cosh,
 *                           P.cubeRoot, P.dividedToIntegerBy, P.floor, P.logarithm, P.minus,
 *                           P.modulo, P.negated, P.plus, P.round, P.sin, P.sinh, P.squareRoot,
 *                           P.tan, P.times, P.toDecimalPlaces, P.toExponential, P.toFixed,
 *                           P.toNearest, P.toPower, P.toPrecision, P.toSignificantDigits,
 *                           P.truncated, divide, getLn10, getPi, naturalExponential,
 *                           naturalLogarithm, ceil, floor, round, trunc
 *  finiteToString           P.toExponential, P.toFixed, P.toPrecision, P.toString, P.valueOf,
 *                           toStringBinary
 *  getBase10Exponent        P.minus, P.plus, P.times, parseOther
 *  getLn10                  P.logarithm, naturalLogarithm
 *  getPi                    P.acos, P.asin, P.atan, toLessThanHalfPi, atan2
 *  getPrecision             P.precision, P.toFraction
 *  getZeroString            digitsToString, finiteToString
 *  intPow                   P.toPower, parseOther
 *  isOdd                    toLessThanHalfPi
 *  maxOrMin                 max, min
 *  naturalExponential       P.naturalExponential, P.toPower
 *  naturalLogarithm         P.acosh, P.asinh, P.atanh, P.logarithm, P.naturalLogarithm,
 *                           P.toPower, naturalExponential
 *  nonFiniteToString        finiteToString, toStringBinary
 *  parseDecimal             Decimal
 *  parseOther               Decimal
 *  sin                      P.sin
 *  taylorSeries             P.cosh, P.sinh, cos, sin
 *  toLessThanHalfPi         P.cos, P.sin
 *  toStringBinary           P.toBinary, P.toHexadecimal, P.toOctal
 *  truncate                 intPow
 *
 *  Throws:                  P.logarithm, P.precision, P.toFraction, checkInt32, getLn10, getPi,
 *                           naturalLogarithm, config, parseOther, random, Decimal
 */


function digitsToString(d) {
  var i, k, ws,
    indexOfLastWord = d.length - 1,
    str = '',
    w = d[0];

  if (indexOfLastWord > 0) {
    str += w;
    for (i = 1; i < indexOfLastWord; i++) {
      ws = d[i] + '';
      k = LOG_BASE - ws.length;
      if (k) str += getZeroString(k);
      str += ws;
    }

    w = d[i];
    ws = w + '';
    k = LOG_BASE - ws.length;
    if (k) str += getZeroString(k);
  } else if (w === 0) {
    return '0';
  }

  // Remove trailing zeros of last w.
  for (; w % 10 === 0;) w /= 10;

  return str + w;
}


function checkInt32(i, min, max) {
  if (i !== ~~i || i < min || i > max) {
    throw Error(invalidArgument + i);
  }
}


/*
 * Check 5 rounding digits if `repeating` is null, 4 otherwise.
 * `repeating == null` if caller is `log` or `pow`,
 * `repeating != null` if caller is `naturalLogarithm` or `naturalExponential`.
 */
function checkRoundingDigits(d, i, rm, repeating) {
  var di, k, r, rd;

  // Get the length of the first word of the array d.
  for (k = d[0]; k >= 10; k /= 10) --i;

  // Is the rounding digit in the first word of d?
  if (--i < 0) {
    i += LOG_BASE;
    di = 0;
  } else {
    di = Math.ceil((i + 1) / LOG_BASE);
    i %= LOG_BASE;
  }

  // i is the index (0 - 6) of the rounding digit.
  // E.g. if within the word 3487563 the first rounding digit is 5,
  // then i = 4, k = 1000, rd = 3487563 % 1000 = 563
  k = mathpow(10, LOG_BASE - i);
  rd = d[di] % k | 0;

  if (repeating == null) {
    if (i < 3) {
      if (i == 0) rd = rd / 100 | 0;
      else if (i == 1) rd = rd / 10 | 0;
      r = rm < 4 && rd == 99999 || rm > 3 && rd == 49999 || rd == 50000 || rd == 0;
    } else {
      r = (rm < 4 && rd + 1 == k || rm > 3 && rd + 1 == k / 2) &&
        (d[di + 1] / k / 100 | 0) == mathpow(10, i - 2) - 1 ||
          (rd == k / 2 || rd == 0) && (d[di + 1] / k / 100 | 0) == 0;
    }
  } else {
    if (i < 4) {
      if (i == 0) rd = rd / 1000 | 0;
      else if (i == 1) rd = rd / 100 | 0;
      else if (i == 2) rd = rd / 10 | 0;
      r = (repeating || rm < 4) && rd == 9999 || !repeating && rm > 3 && rd == 4999;
    } else {
      r = ((repeating || rm < 4) && rd + 1 == k ||
      (!repeating && rm > 3) && rd + 1 == k / 2) &&
        (d[di + 1] / k / 1000 | 0) == mathpow(10, i - 3) - 1;
    }
  }

  return r;
}


// Convert string of `baseIn` to an array of numbers of `baseOut`.
// Eg. convertBase('255', 10, 16) returns [15, 15].
// Eg. convertBase('ff', 16, 10) returns [2, 5, 5].
function convertBase(str, baseIn, baseOut) {
  var j,
    arr = [0],
    arrL,
    i = 0,
    strL = str.length;

  for (; i < strL;) {
    for (arrL = arr.length; arrL--;) arr[arrL] *= baseIn;
    arr[0] += NUMERALS.indexOf(str.charAt(i++));
    for (j = 0; j < arr.length; j++) {
      if (arr[j] > baseOut - 1) {
        if (arr[j + 1] === void 0) arr[j + 1] = 0;
        arr[j + 1] += arr[j] / baseOut | 0;
        arr[j] %= baseOut;
      }
    }
  }

  return arr.reverse();
}


/*
 * cos(x) = 1 - x^2/2! + x^4/4! - ...
 * |x| < pi/2
 *
 */
function cosine(Ctor, x) {
  var k, y,
    len = x.d.length;

  // Argument reduction: cos(4x) = 8*(cos^4(x) - cos^2(x)) + 1
  // i.e. cos(x) = 8*(cos^4(x/4) - cos^2(x/4)) + 1

  // Estimate the optimum number of times to use the argument reduction.
  if (len < 32) {
    k = Math.ceil(len / 3);
    y = Math.pow(4, -k).toString();
  } else {
    k = 16;
    y = '2.3283064365386962890625e-10';
  }

  Ctor.precision += k;

  x = taylorSeries(Ctor, 1, x.times(y), new Ctor(1));

  // Reverse argument reduction
  for (var i = k; i--;) {
    var cos2x = x.times(x);
    x = cos2x.times(cos2x).minus(cos2x).times(8).plus(1);
  }

  Ctor.precision -= k;

  return x;
}


/*
 * Perform division in the specified base.
 */
var divide = (function () {

  // Assumes non-zero x and k, and hence non-zero result.
  function multiplyInteger(x, k, base) {
    var temp,
      carry = 0,
      i = x.length;

    for (x = x.slice(); i--;) {
      temp = x[i] * k + carry;
      x[i] = temp % base | 0;
      carry = temp / base | 0;
    }

    if (carry) x.unshift(carry);

    return x;
  }

  function compare(a, b, aL, bL) {
    var i, r;

    if (aL != bL) {
      r = aL > bL ? 1 : -1;
    } else {
      for (i = r = 0; i < aL; i++) {
        if (a[i] != b[i]) {
          r = a[i] > b[i] ? 1 : -1;
          break;
        }
      }
    }

    return r;
  }

  function subtract(a, b, aL, base) {
    var i = 0;

    // Subtract b from a.
    for (; aL--;) {
      a[aL] -= i;
      i = a[aL] < b[aL] ? 1 : 0;
      a[aL] = i * base + a[aL] - b[aL];
    }

    // Remove leading zeros.
    for (; !a[0] && a.length > 1;) a.shift();
  }

  return function (x, y, pr, rm, dp, base) {
    var cmp, e, i, k, logBase, more, prod, prodL, q, qd, rem, remL, rem0, sd, t, xi, xL, yd0,
      yL, yz,
      Ctor = x.constructor,
      sign = x.s == y.s ? 1 : -1,
      xd = x.d,
      yd = y.d;

    // Either NaN, Infinity or 0?
    if (!xd || !xd[0] || !yd || !yd[0]) {

      return new Ctor(// Return NaN if either NaN, or both Infinity or 0.
        !x.s || !y.s || (xd ? yd && xd[0] == yd[0] : !yd) ? NaN :

        // Return ±0 if x is 0 or y is ±Infinity, or return ±Infinity as y is 0.
        xd && xd[0] == 0 || !yd ? sign * 0 : sign / 0);
    }

    if (base) {
      logBase = 1;
      e = x.e - y.e;
    } else {
      base = BASE;
      logBase = LOG_BASE;
      e = mathfloor(x.e / logBase) - mathfloor(y.e / logBase);
    }

    yL = yd.length;
    xL = xd.length;
    q = new Ctor(sign);
    qd = q.d = [];

    // Result exponent may be one less than e.
    // The digit array of a Decimal from toStringBinary may have trailing zeros.
    for (i = 0; yd[i] == (xd[i] || 0); i++);

    if (yd[i] > (xd[i] || 0)) e--;

    if (pr == null) {
      sd = pr = Ctor.precision;
      rm = Ctor.rounding;
    } else if (dp) {
      sd = pr + (x.e - y.e) + 1;
    } else {
      sd = pr;
    }

    if (sd < 0) {
      qd.push(1);
      more = true;
    } else {

      // Convert precision in number of base 10 digits to base 1e7 digits.
      sd = sd / logBase + 2 | 0;
      i = 0;

      // divisor < 1e7
      if (yL == 1) {
        k = 0;
        yd = yd[0];
        sd++;

        // k is the carry.
        for (; (i < xL || k) && sd--; i++) {
          t = k * base + (xd[i] || 0);
          qd[i] = t / yd | 0;
          k = t % yd | 0;
        }

        more = k || i < xL;

      // divisor >= 1e7
      } else {

        // Normalise xd and yd so highest order digit of yd is >= base/2
        k = base / (yd[0] + 1) | 0;

        if (k > 1) {
          yd = multiplyInteger(yd, k, base);
          xd = multiplyInteger(xd, k, base);
          yL = yd.length;
          xL = xd.length;
        }

        xi = yL;
        rem = xd.slice(0, yL);
        remL = rem.length;

        // Add zeros to make remainder as long as divisor.
        for (; remL < yL;) rem[remL++] = 0;

        yz = yd.slice();
        yz.unshift(0);
        yd0 = yd[0];

        if (yd[1] >= base / 2) ++yd0;

        do {
          k = 0;

          // Compare divisor and remainder.
          cmp = compare(yd, rem, yL, remL);

          // If divisor < remainder.
          if (cmp < 0) {

            // Calculate trial digit, k.
            rem0 = rem[0];
            if (yL != remL) rem0 = rem0 * base + (rem[1] || 0);

            // k will be how many times the divisor goes into the current remainder.
            k = rem0 / yd0 | 0;

            //  Algorithm:
            //  1. product = divisor * trial digit (k)
            //  2. if product > remainder: product -= divisor, k--
            //  3. remainder -= product
            //  4. if product was < remainder at 2:
            //    5. compare new remainder and divisor
            //    6. If remainder > divisor: remainder -= divisor, k++

            if (k > 1) {
              if (k >= base) k = base - 1;

              // product = divisor * trial digit.
              prod = multiplyInteger(yd, k, base);
              prodL = prod.length;
              remL = rem.length;

              // Compare product and remainder.
              cmp = compare(prod, rem, prodL, remL);

              // product > remainder.
              if (cmp == 1) {
                k--;

                // Subtract divisor from product.
                subtract(prod, yL < prodL ? yz : yd, prodL, base);
              }
            } else {

              // cmp is -1.
              // If k is 0, there is no need to compare yd and rem again below, so change cmp to 1
              // to avoid it. If k is 1 there is a need to compare yd and rem again below.
              if (k == 0) cmp = k = 1;
              prod = yd.slice();
            }

            prodL = prod.length;
            if (prodL < remL) prod.unshift(0);

            // Subtract product from remainder.
            subtract(rem, prod, remL, base);

            // If product was < previous remainder.
            if (cmp == -1) {
              remL = rem.length;

              // Compare divisor and new remainder.
              cmp = compare(yd, rem, yL, remL);

              // If divisor < new remainder, subtract divisor from remainder.
              if (cmp < 1) {
                k++;

                // Subtract divisor from remainder.
                subtract(rem, yL < remL ? yz : yd, remL, base);
              }
            }

            remL = rem.length;
          } else if (cmp === 0) {
            k++;
            rem = [0];
          }    // if cmp === 1, k will be 0

          // Add the next digit, k, to the result array.
          qd[i++] = k;

          // Update the remainder.
          if (cmp && rem[0]) {
            rem[remL++] = xd[xi] || 0;
          } else {
            rem = [xd[xi]];
            remL = 1;
          }

        } while ((xi++ < xL || rem[0] !== void 0) && sd--);

        more = rem[0] !== void 0;
      }

      // Leading zero?
      if (!qd[0]) qd.shift();
    }

    // logBase is 1 when divide is being used for base conversion.
    if (logBase == 1) {
      q.e = e;
      inexact = more;
    } else {

      // To calculate q.e, first get the number of digits of qd[0].
      for (i = 1, k = qd[0]; k >= 10; k /= 10) i++;
      q.e = i + e * logBase - 1;

      finalise(q, dp ? pr + q.e + 1 : pr, rm, more);
    }

    return q;
  };
})();


/*
 * Round `x` to `sd` significant digits using rounding mode `rm`.
 * Check for over/under-flow.
 */
 function finalise(x, sd, rm, isTruncated) {
  var digits, i, j, k, rd, roundUp, w, xd, xdi,
    Ctor = x.constructor;

  // Don't round if sd is null or undefined.
  out: if (sd != null) {
    xd = x.d;

    // Infinity/NaN.
    if (!xd) return x;

    // rd: the rounding digit, i.e. the digit after the digit that may be rounded up.
    // w: the word of xd containing rd, a base 1e7 number.
    // xdi: the index of w within xd.
    // digits: the number of digits of w.
    // i: what would be the index of rd within w if all the numbers were 7 digits long (i.e. if
    // they had leading zeros)
    // j: if > 0, the actual index of rd within w (if < 0, rd is a leading zero).

    // Get the length of the first word of the digits array xd.
    for (digits = 1, k = xd[0]; k >= 10; k /= 10) digits++;
    i = sd - digits;

    // Is the rounding digit in the first word of xd?
    if (i < 0) {
      i += LOG_BASE;
      j = sd;
      w = xd[xdi = 0];

      // Get the rounding digit at index j of w.
      rd = w / mathpow(10, digits - j - 1) % 10 | 0;
    } else {
      xdi = Math.ceil((i + 1) / LOG_BASE);
      k = xd.length;
      if (xdi >= k) {
        if (isTruncated) {

          // Needed by `naturalExponential`, `naturalLogarithm` and `squareRoot`.
          for (; k++ <= xdi;) xd.push(0);
          w = rd = 0;
          digits = 1;
          i %= LOG_BASE;
          j = i - LOG_BASE + 1;
        } else {
          break out;
        }
      } else {
        w = k = xd[xdi];

        // Get the number of digits of w.
        for (digits = 1; k >= 10; k /= 10) digits++;

        // Get the index of rd within w.
        i %= LOG_BASE;

        // Get the index of rd within w, adjusted for leading zeros.
        // The number of leading zeros of w is given by LOG_BASE - digits.
        j = i - LOG_BASE + digits;

        // Get the rounding digit at index j of w.
        rd = j < 0 ? 0 : w / mathpow(10, digits - j - 1) % 10 | 0;
      }
    }

    // Are there any non-zero digits after the rounding digit?
    isTruncated = isTruncated || sd < 0 ||
      xd[xdi + 1] !== void 0 || (j < 0 ? w : w % mathpow(10, digits - j - 1));

    // The expression `w % mathpow(10, digits - j - 1)` returns all the digits of w to the right
    // of the digit at (left-to-right) index j, e.g. if w is 908714 and j is 2, the expression
    // will give 714.

    roundUp = rm < 4
      ? (rd || isTruncated) && (rm == 0 || rm == (x.s < 0 ? 3 : 2))
      : rd > 5 || rd == 5 && (rm == 4 || isTruncated || rm == 6 &&

        // Check whether the digit to the left of the rounding digit is odd.
        ((i > 0 ? j > 0 ? w / mathpow(10, digits - j) : 0 : xd[xdi - 1]) % 10) & 1 ||
          rm == (x.s < 0 ? 8 : 7));

    if (sd < 1 || !xd[0]) {
      xd.length = 0;
      if (roundUp) {

        // Convert sd to decimal places.
        sd -= x.e + 1;

        // 1, 0.1, 0.01, 0.001, 0.0001 etc.
        xd[0] = mathpow(10, (LOG_BASE - sd % LOG_BASE) % LOG_BASE);
        x.e = -sd || 0;
      } else {

        // Zero.
        xd[0] = x.e = 0;
      }

      return x;
    }

    // Remove excess digits.
    if (i == 0) {
      xd.length = xdi;
      k = 1;
      xdi--;
    } else {
      xd.length = xdi + 1;
      k = mathpow(10, LOG_BASE - i);

      // E.g. 56700 becomes 56000 if 7 is the rounding digit.
      // j > 0 means i > number of leading zeros of w.
      xd[xdi] = j > 0 ? (w / mathpow(10, digits - j) % mathpow(10, j) | 0) * k : 0;
    }

    if (roundUp) {
      for (;;) {

        // Is the digit to be rounded up in the first word of xd?
        if (xdi == 0) {

          // i will be the length of xd[0] before k is added.
          for (i = 1, j = xd[0]; j >= 10; j /= 10) i++;
          j = xd[0] += k;
          for (k = 1; j >= 10; j /= 10) k++;

          // if i != k the length has increased.
          if (i != k) {
            x.e++;
            if (xd[0] == BASE) xd[0] = 1;
          }

          break;
        } else {
          xd[xdi] += k;
          if (xd[xdi] != BASE) break;
          xd[xdi--] = 0;
          k = 1;
        }
      }
    }

    // Remove trailing zeros.
    for (i = xd.length; xd[--i] === 0;) xd.pop();
  }

  if (external) {

    // Overflow?
    if (x.e > Ctor.maxE) {

      // Infinity.
      x.d = null;
      x.e = NaN;

    // Underflow?
    } else if (x.e < Ctor.minE) {

      // Zero.
      x.e = 0;
      x.d = [0];
      // Ctor.underflow = true;
    } // else Ctor.underflow = false;
  }

  return x;
}


function finiteToString(x, isExp, sd) {
  if (!x.isFinite()) return nonFiniteToString(x);
  var k,
    e = x.e,
    str = digitsToString(x.d),
    len = str.length;

  if (isExp) {
    if (sd && (k = sd - len) > 0) {
      str = str.charAt(0) + '.' + str.slice(1) + getZeroString(k);
    } else if (len > 1) {
      str = str.charAt(0) + '.' + str.slice(1);
    }

    str = str + (x.e < 0 ? 'e' : 'e+') + x.e;
  } else if (e < 0) {
    str = '0.' + getZeroString(-e - 1) + str;
    if (sd && (k = sd - len) > 0) str += getZeroString(k);
  } else if (e >= len) {
    str += getZeroString(e + 1 - len);
    if (sd && (k = sd - e - 1) > 0) str = str + '.' + getZeroString(k);
  } else {
    if ((k = e + 1) < len) str = str.slice(0, k) + '.' + str.slice(k);
    if (sd && (k = sd - len) > 0) {
      if (e + 1 === len) str += '.';
      str += getZeroString(k);
    }
  }

  return str;
}


// Calculate the base 10 exponent from the base 1e7 exponent.
function getBase10Exponent(digits, e) {
  var w = digits[0];

  // Add the number of digits of the first word of the digits array.
  for ( e *= LOG_BASE; w >= 10; w /= 10) e++;
  return e;
}


function getLn10(Ctor, sd, pr) {
  if (sd > LN10_PRECISION) {

    // Reset global state in case the exception is caught.
    external = true;
    if (pr) Ctor.precision = pr;
    throw Error(precisionLimitExceeded);
  }
  return finalise(new Ctor(LN10), sd, 1, true);
}


function getPi(Ctor, sd, rm) {
  if (sd > PI_PRECISION) throw Error(precisionLimitExceeded);
  return finalise(new Ctor(PI), sd, rm, true);
}


function getPrecision(digits) {
  var w = digits.length - 1,
    len = w * LOG_BASE + 1;

  w = digits[w];

  // If non-zero...
  if (w) {

    // Subtract the number of trailing zeros of the last word.
    for (; w % 10 == 0; w /= 10) len--;

    // Add the number of digits of the first word.
    for (w = digits[0]; w >= 10; w /= 10) len++;
  }

  return len;
}


function getZeroString(k) {
  var zs = '';
  for (; k--;) zs += '0';
  return zs;
}


/*
 * Return a new Decimal whose value is the value of Decimal `x` to the power `n`, where `n` is an
 * integer of type number.
 *
 * Implements 'exponentiation by squaring'. Called by `pow` and `parseOther`.
 *
 */
function intPow(Ctor, x, n, pr) {
  var isTruncated,
    r = new Ctor(1),

    // Max n of 9007199254740991 takes 53 loop iterations.
    // Maximum digits array length; leaves [28, 34] guard digits.
    k = Math.ceil(pr / LOG_BASE + 4);

  external = false;

  for (;;) {
    if (n % 2) {
      r = r.times(x);
      if (truncate(r.d, k)) isTruncated = true;
    }

    n = mathfloor(n / 2);
    if (n === 0) {

      // To ensure correct rounding when r.d is truncated, increment the last word if it is zero.
      n = r.d.length - 1;
      if (isTruncated && r.d[n] === 0) ++r.d[n];
      break;
    }

    x = x.times(x);
    truncate(x.d, k);
  }

  external = true;

  return r;
}


function isOdd(n) {
  return n.d[n.d.length - 1] & 1;
}


/*
 * Handle `max` and `min`. `ltgt` is 'lt' or 'gt'.
 */
function maxOrMin(Ctor, args, ltgt) {
  var y,
    x = new Ctor(args[0]),
    i = 0;

  for (; ++i < args.length;) {
    y = new Ctor(args[i]);
    if (!y.s) {
      x = y;
      break;
    } else if (x[ltgt](y)) {
      x = y;
    }
  }

  return x;
}


/*
 * Return a new Decimal whose value is the natural exponential of `x` rounded to `sd` significant
 * digits.
 *
 * Taylor/Maclaurin series.
 *
 * exp(x) = x^0/0! + x^1/1! + x^2/2! + x^3/3! + ...
 *
 * Argument reduction:
 *   Repeat x = x / 32, k += 5, until |x| < 0.1
 *   exp(x) = exp(x / 2^k)^(2^k)
 *
 * Previously, the argument was initially reduced by
 * exp(x) = exp(r) * 10^k  where r = x - k * ln10, k = floor(x / ln10)
 * to first put r in the range [0, ln10], before dividing by 32 until |x| < 0.1, but this was
 * found to be slower than just dividing repeatedly by 32 as above.
 *
 * Max integer argument: exp('20723265836946413') = 6.3e+9000000000000000
 * Min integer argument: exp('-20723265836946411') = 1.2e-9000000000000000
 * (Math object integer min/max: Math.exp(709) = 8.2e+307, Math.exp(-745) = 5e-324)
 *
 *  exp(Infinity)  = Infinity
 *  exp(-Infinity) = 0
 *  exp(NaN)       = NaN
 *  exp(±0)        = 1
 *
 *  exp(x) is non-terminating for any finite, non-zero x.
 *
 *  The result will always be correctly rounded.
 *
 */
function naturalExponential(x, sd) {
  var denominator, guard, j, pow, sum, t, wpr,
    rep = 0,
    i = 0,
    k = 0,
    Ctor = x.constructor,
    rm = Ctor.rounding,
    pr = Ctor.precision;

  // 0/NaN/Infinity?
  if (!x.d || !x.d[0] || x.e > 17) {

    return new Ctor(x.d
      ? !x.d[0] ? 1 : x.s < 0 ? 0 : 1 / 0
      : x.s ? x.s < 0 ? 0 : x : 0 / 0);
  }

  if (sd == null) {
    external = false;
    wpr = pr;
  } else {
    wpr = sd;
  }

  t = new Ctor(0.03125);

  // while abs(x) >= 0.1
  while (x.e > -2) {

    // x = x / 2^5
    x = x.times(t);
    k += 5;
  }

  // Use 2 * log10(2^k) + 5 (empirically derived) to estimate the increase in precision
  // necessary to ensure the first 4 rounding digits are correct.
  guard = Math.log(mathpow(2, k)) / Math.LN10 * 2 + 5 | 0;
  wpr += guard;
  denominator = pow = sum = new Ctor(1);
  Ctor.precision = wpr;

  for (;;) {
    pow = finalise(pow.times(x), wpr, 1);
    denominator = denominator.times(++i);
    t = sum.plus(divide(pow, denominator, wpr, 1));

    if (digitsToString(t.d).slice(0, wpr) === digitsToString(sum.d).slice(0, wpr)) {
      j = k;
      while (j--) sum = finalise(sum.times(sum), wpr, 1);

      // Check to see if the first 4 rounding digits are [49]999.
      // If so, repeat the summation with a higher precision, otherwise
      // e.g. with precision: 18, rounding: 1
      // exp(18.404272462595034083567793919843761) = 98372560.1229999999 (should be 98372560.123)
      // `wpr - guard` is the index of first rounding digit.
      if (sd == null) {

        if (rep < 3 && checkRoundingDigits(sum.d, wpr - guard, rm, rep)) {
          Ctor.precision = wpr += 10;
          denominator = pow = t = new Ctor(1);
          i = 0;
          rep++;
        } else {
          return finalise(sum, Ctor.precision = pr, rm, external = true);
        }
      } else {
        Ctor.precision = pr;
        return sum;
      }
    }

    sum = t;
  }
}


/*
 * Return a new Decimal whose value is the natural logarithm of `x` rounded to `sd` significant
 * digits.
 *
 *  ln(-n)        = NaN
 *  ln(0)         = -Infinity
 *  ln(-0)        = -Infinity
 *  ln(1)         = 0
 *  ln(Infinity)  = Infinity
 *  ln(-Infinity) = NaN
 *  ln(NaN)       = NaN
 *
 *  ln(n) (n != 1) is non-terminating.
 *
 */
function naturalLogarithm(y, sd) {
  var c, c0, denominator, e, numerator, rep, sum, t, wpr, x1, x2,
    n = 1,
    guard = 10,
    x = y,
    xd = x.d,
    Ctor = x.constructor,
    rm = Ctor.rounding,
    pr = Ctor.precision;

  // Is x negative or Infinity, NaN, 0 or 1?
  if (x.s < 0 || !xd || !xd[0] || !x.e && xd[0] == 1 && xd.length == 1) {
    return new Ctor(xd && !xd[0] ? -1 / 0 : x.s != 1 ? NaN : xd ? 0 : x);
  }

  if (sd == null) {
    external = false;
    wpr = pr;
  } else {
    wpr = sd;
  }

  Ctor.precision = wpr += guard;
  c = digitsToString(xd);
  c0 = c.charAt(0);

  if (Math.abs(e = x.e) < 1.5e15) {

    // Argument reduction.
    // The series converges faster the closer the argument is to 1, so using
    // ln(a^b) = b * ln(a),   ln(a) = ln(a^b) / b
    // multiply the argument by itself until the leading digits of the significand are 7, 8, 9,
    // 10, 11, 12 or 13, recording the number of multiplications so the sum of the series can
    // later be divided by this number, then separate out the power of 10 using
    // ln(a*10^b) = ln(a) + b*ln(10).

    // max n is 21 (gives 0.9, 1.0 or 1.1) (9e15 / 21 = 4.2e14).
    //while (c0 < 9 && c0 != 1 || c0 == 1 && c.charAt(1) > 1) {
    // max n is 6 (gives 0.7 - 1.3)
    while (c0 < 7 && c0 != 1 || c0 == 1 && c.charAt(1) > 3) {
      x = x.times(y);
      c = digitsToString(x.d);
      c0 = c.charAt(0);
      n++;
    }

    e = x.e;

    if (c0 > 1) {
      x = new Ctor('0.' + c);
      e++;
    } else {
      x = new Ctor(c0 + '.' + c.slice(1));
    }
  } else {

    // The argument reduction method above may result in overflow if the argument y is a massive
    // number with exponent >= 1500000000000000 (9e15 / 6 = 1.5e15), so instead recall this
    // function using ln(x*10^e) = ln(x) + e*ln(10).
    t = getLn10(Ctor, wpr + 2, pr).times(e + '');
    x = naturalLogarithm(new Ctor(c0 + '.' + c.slice(1)), wpr - guard).plus(t);
    Ctor.precision = pr;

    return sd == null ? finalise(x, pr, rm, external = true) : x;
  }

  // x1 is x reduced to a value near 1.
  x1 = x;

  // Taylor series.
  // ln(y) = ln((1 + x)/(1 - x)) = 2(x + x^3/3 + x^5/5 + x^7/7 + ...)
  // where x = (y - 1)/(y + 1)    (|x| < 1)
  sum = numerator = x = divide(x.minus(1), x.plus(1), wpr, 1);
  x2 = finalise(x.times(x), wpr, 1);
  denominator = 3;

  for (;;) {
    numerator = finalise(numerator.times(x2), wpr, 1);
    t = sum.plus(divide(numerator, new Ctor(denominator), wpr, 1));

    if (digitsToString(t.d).slice(0, wpr) === digitsToString(sum.d).slice(0, wpr)) {
      sum = sum.times(2);

      // Reverse the argument reduction. Check that e is not 0 because, besides preventing an
      // unnecessary calculation, -0 + 0 = +0 and to ensure correct rounding -0 needs to stay -0.
      if (e !== 0) sum = sum.plus(getLn10(Ctor, wpr + 2, pr).times(e + ''));
      sum = divide(sum, new Ctor(n), wpr, 1);

      // Is rm > 3 and the first 4 rounding digits 4999, or rm < 4 (or the summation has
      // been repeated previously) and the first 4 rounding digits 9999?
      // If so, restart the summation with a higher precision, otherwise
      // e.g. with precision: 12, rounding: 1
      // ln(135520028.6126091714265381533) = 18.7246299999 when it should be 18.72463.
      // `wpr - guard` is the index of first rounding digit.
      if (sd == null) {
        if (checkRoundingDigits(sum.d, wpr - guard, rm, rep)) {
          Ctor.precision = wpr += guard;
          t = numerator = x = divide(x1.minus(1), x1.plus(1), wpr, 1);
          x2 = finalise(x.times(x), wpr, 1);
          denominator = rep = 1;
        } else {
          return finalise(sum, Ctor.precision = pr, rm, external = true);
        }
      } else {
        Ctor.precision = pr;
        return sum;
      }
    }

    sum = t;
    denominator += 2;
  }
}


// ±Infinity, NaN.
function nonFiniteToString(x) {
  // Unsigned.
  return String(x.s * x.s / 0);
}


/*
 * Parse the value of a new Decimal `x` from string `str`.
 */
function parseDecimal(x, str) {
  var e, i, len;

  // Decimal point?
  if ((e = str.indexOf('.')) > -1) str = str.replace('.', '');

  // Exponential form?
  if ((i = str.search(/e/i)) > 0) {

    // Determine exponent.
    if (e < 0) e = i;
    e += +str.slice(i + 1);
    str = str.substring(0, i);
  } else if (e < 0) {

    // Integer.
    e = str.length;
  }

  // Determine leading zeros.
  for (i = 0; str.charCodeAt(i) === 48; i++);

  // Determine trailing zeros.
  for (len = str.length; str.charCodeAt(len - 1) === 48; --len);
  str = str.slice(i, len);

  if (str) {
    len -= i;
    x.e = e = e - i - 1;
    x.d = [];

    // Transform base

    // e is the base 10 exponent.
    // i is where to slice str to get the first word of the digits array.
    i = (e + 1) % LOG_BASE;
    if (e < 0) i += LOG_BASE;

    if (i < len) {
      if (i) x.d.push(+str.slice(0, i));
      for (len -= LOG_BASE; i < len;) x.d.push(+str.slice(i, i += LOG_BASE));
      str = str.slice(i);
      i = LOG_BASE - str.length;
    } else {
      i -= len;
    }

    for (; i--;) str += '0';
    x.d.push(+str);

    if (external) {

      // Overflow?
      if (x.e > x.constructor.maxE) {

        // Infinity.
        x.d = null;
        x.e = NaN;

      // Underflow?
      } else if (x.e < x.constructor.minE) {

        // Zero.
        x.e = 0;
        x.d = [0];
        // x.constructor.underflow = true;
      } // else x.constructor.underflow = false;
    }
  } else {

    // Zero.
    x.e = 0;
    x.d = [0];
  }

  return x;
}


/*
 * Parse the value of a new Decimal `x` from a string `str`, which is not a decimal value.
 */
function parseOther(x, str) {
  var base, Ctor, divisor, i, isFloat, len, p, xd, xe;

  if (str === 'Infinity' || str === 'NaN') {
    if (!+str) x.s = NaN;
    x.e = NaN;
    x.d = null;
    return x;
  }

  if (isHex.test(str))  {
    base = 16;
    str = str.toLowerCase();
  } else if (isBinary.test(str))  {
    base = 2;
  } else if (isOctal.test(str))  {
    base = 8;
  } else {
    throw Error(invalidArgument + str);
  }

  // Is there a binary exponent part?
  i = str.search(/p/i);

  if (i > 0) {
    p = +str.slice(i + 1);
    str = str.substring(2, i);
  } else {
    str = str.slice(2);
  }

  // Convert `str` as an integer then divide the result by `base` raised to a power such that the
  // fraction part will be restored.
  i = str.indexOf('.');
  isFloat = i >= 0;
  Ctor = x.constructor;

  if (isFloat) {
    str = str.replace('.', '');
    len = str.length;
    i = len - i;

    // log[10](16) = 1.2041... , log[10](88) = 1.9444....
    divisor = intPow(Ctor, new Ctor(base), i, i * 2);
  }

  xd = convertBase(str, base, BASE);
  xe = xd.length - 1;

  // Remove trailing zeros.
  for (i = xe; xd[i] === 0; --i) xd.pop();
  if (i < 0) return new Ctor(x.s * 0);
  x.e = getBase10Exponent(xd, xe);
  x.d = xd;
  external = false;

  // At what precision to perform the division to ensure exact conversion?
  // maxDecimalIntegerPartDigitCount = ceil(log[10](b) * otherBaseIntegerPartDigitCount)
  // log[10](2) = 0.30103, log[10](8) = 0.90309, log[10](16) = 1.20412
  // E.g. ceil(1.2 * 3) = 4, so up to 4 decimal digits are needed to represent 3 hex int digits.
  // maxDecimalFractionPartDigitCount = {Hex:4|Oct:3|Bin:1} * otherBaseFractionPartDigitCount
  // Therefore using 4 * the number of digits of str will always be enough.
  if (isFloat) x = divide(x, divisor, len * 4);

  // Multiply by the binary exponent part if present.
  if (p) x = x.times(Math.abs(p) < 54 ? Math.pow(2, p) : Decimal.pow(2, p));
  external = true;

  return x;
}


/*
 * sin(x) = x - x^3/3! + x^5/5! - ...
 * |x| < pi/2
 *
 */
function sine(Ctor, x) {
  var k,
    len = x.d.length;

  if (len < 3) return taylorSeries(Ctor, 2, x, x);

  // Argument reduction: sin(5x) = 16*sin^5(x) - 20*sin^3(x) + 5*sin(x)
  // i.e. sin(x) = 16*sin^5(x/5) - 20*sin^3(x/5) + 5*sin(x/5)
  // and  sin(x) = sin(x/5)(5 + sin^2(x/5)(16sin^2(x/5) - 20))

  // Estimate the optimum number of times to use the argument reduction.
  k = 1.4 * Math.sqrt(len);
  k = k > 16 ? 16 : k | 0;

  // Max k before Math.pow precision loss is 22
  x = x.times(Math.pow(5, -k));
  x = taylorSeries(Ctor, 2, x, x);

  // Reverse argument reduction
  var sin2_x,
    d5 = new Ctor(5),
    d16 = new Ctor(16),
    d20 = new Ctor(20);
  for (; k--;) {
    sin2_x = x.times(x);
    x = x.times(d5.plus(sin2_x.times(d16.times(sin2_x).minus(d20))));
  }

  return x;
}


// Calculate Taylor series for `cos`, `cosh`, `sin` and `sinh`.
function taylorSeries(Ctor, n, x, y, isHyperbolic) {
  var j, t, u, x2,
    i = 1,
    pr = Ctor.precision,
    k = Math.ceil(pr / LOG_BASE);

  external = false;
  x2 = x.times(x);
  u = new Ctor(y);

  for (;;) {
    t = divide(u.times(x2), new Ctor(n++ * n++), pr, 1);
    u = isHyperbolic ? y.plus(t) : y.minus(t);
    y = divide(t.times(x2), new Ctor(n++ * n++), pr, 1);
    t = u.plus(y);

    if (t.d[k] !== void 0) {
      for (j = k; t.d[j] === u.d[j] && j--;);
      if (j == -1) break;
    }

    j = u;
    u = y;
    y = t;
    t = j;
    i++;
  }

  external = true;
  t.d.length = k + 1;

  return t;
}


// Return the absolute value of `x` reduced to less than or equal to half pi.
function toLessThanHalfPi(Ctor, x) {
  var t,
    isNeg = x.s < 0,
    pi = getPi(Ctor, Ctor.precision, 1),
    halfPi = pi.times(0.5);

  x = x.abs();

  if (x.lte(halfPi)) {
    quadrant = isNeg ? 4 : 1;
    return x;
  }

  t = x.divToInt(pi);

  if (t.isZero()) {
    quadrant = isNeg ? 3 : 2;
  } else {
    x = x.minus(t.times(pi));

    // 0 <= x < pi
    if (x.lte(halfPi)) {
      quadrant = isOdd(t) ? (isNeg ? 2 : 3) : (isNeg ? 4 : 1);
      return x;
    }

    quadrant = isOdd(t) ? (isNeg ? 1 : 4) : (isNeg ? 3 : 2);
  }

  return x.minus(pi).abs();
}


/*
 * Return the value of Decimal `x` as a string in base `baseOut`.
 *
 * If the optional `sd` argument is present include a binary exponent suffix.
 */
function toStringBinary(x, baseOut, sd, rm) {
  var base, e, i, k, len, roundUp, str, xd, y,
    Ctor = x.constructor,
    isExp = sd !== void 0;

  if (isExp) {
    checkInt32(sd, 1, MAX_DIGITS);
    if (rm === void 0) rm = Ctor.rounding;
    else checkInt32(rm, 0, 8);
  } else {
    sd = Ctor.precision;
    rm = Ctor.rounding;
  }

  if (!x.isFinite()) {
    str = nonFiniteToString(x);
  } else {
    str = finiteToString(x);
    i = str.indexOf('.');

    // Use exponential notation according to `toExpPos` and `toExpNeg`? No, but if required:
    // maxBinaryExponent = floor((decimalExponent + 1) * log[2](10))
    // minBinaryExponent = floor(decimalExponent * log[2](10))
    // log[2](10) = 3.321928094887362347870319429489390175864

    if (isExp) {
      base = 2;
      if (baseOut == 16) {
        sd = sd * 4 - 3;
      } else if (baseOut == 8) {
        sd = sd * 3 - 2;
      }
    } else {
      base = baseOut;
    }

    // Convert the number as an integer then divide the result by its base raised to a power such
    // that the fraction part will be restored.

    // Non-integer.
    if (i >= 0) {
      str = str.replace('.', '');
      y = new Ctor(1);
      y.e = str.length - i;
      y.d = convertBase(finiteToString(y), 10, base);
      y.e = y.d.length;
    }

    xd = convertBase(str, 10, base);
    e = len = xd.length;

    // Remove trailing zeros.
    for (; xd[--len] == 0;) xd.pop();

    if (!xd[0]) {
      str = isExp ? '0p+0' : '0';
    } else {
      if (i < 0) {
        e--;
      } else {
        x = new Ctor(x);
        x.d = xd;
        x.e = e;
        x = divide(x, y, sd, rm, 0, base);
        xd = x.d;
        e = x.e;
        roundUp = inexact;
      }

      // The rounding digit, i.e. the digit after the digit that may be rounded up.
      i = xd[sd];
      k = base / 2;
      roundUp = roundUp || xd[sd + 1] !== void 0;

      roundUp = rm < 4
        ? (i !== void 0 || roundUp) && (rm === 0 || rm === (x.s < 0 ? 3 : 2))
        : i > k || i === k && (rm === 4 || roundUp || rm === 6 && xd[sd - 1] & 1 ||
          rm === (x.s < 0 ? 8 : 7));

      xd.length = sd;

      if (roundUp) {

        // Rounding up may mean the previous digit has to be rounded up and so on.
        for (; ++xd[--sd] > base - 1;) {
          xd[sd] = 0;
          if (!sd) {
            ++e;
            xd.unshift(1);
          }
        }
      }

      // Determine trailing zeros.
      for (len = xd.length; !xd[len - 1]; --len);

      // E.g. [4, 11, 15] becomes 4bf.
      for (i = 0, str = ''; i < len; i++) str += NUMERALS.charAt(xd[i]);

      // Add binary exponent suffix?
      if (isExp) {
        if (len > 1) {
          if (baseOut == 16 || baseOut == 8) {
            i = baseOut == 16 ? 4 : 3;
            for (--len; len % i; len++) str += '0';
            xd = convertBase(str, base, baseOut);
            for (len = xd.length; !xd[len - 1]; --len);

            // xd[0] will always be be 1
            for (i = 1, str = '1.'; i < len; i++) str += NUMERALS.charAt(xd[i]);
          } else {
            str = str.charAt(0) + '.' + str.slice(1);
          }
        }

        str =  str + (e < 0 ? 'p' : 'p+') + e;
      } else if (e < 0) {
        for (; ++e;) str = '0' + str;
        str = '0.' + str;
      } else {
        if (++e > len) for (e -= len; e-- ;) str += '0';
        else if (e < len) str = str.slice(0, e) + '.' + str.slice(e);
      }
    }

    str = (baseOut == 16 ? '0x' : baseOut == 2 ? '0b' : baseOut == 8 ? '0o' : '') + str;
  }

  return x.s < 0 ? '-' + str : str;
}


// Does not strip trailing zeros.
function truncate(arr, len) {
  if (arr.length > len) {
    arr.length = len;
    return true;
  }
}


// Decimal methods


/*
 *  abs
 *  acos
 *  acosh
 *  add
 *  asin
 *  asinh
 *  atan
 *  atanh
 *  atan2
 *  cbrt
 *  ceil
 *  clone
 *  config
 *  cos
 *  cosh
 *  div
 *  exp
 *  floor
 *  hypot
 *  ln
 *  log
 *  log2
 *  log10
 *  max
 *  min
 *  mod
 *  mul
 *  pow
 *  random
 *  round
 *  set
 *  sign
 *  sin
 *  sinh
 *  sqrt
 *  sub
 *  tan
 *  tanh
 *  trunc
 */


/*
 * Return a new Decimal whose value is the absolute value of `x`.
 *
 * x {number|string|Decimal}
 *
 */
function abs(x) {
  return new this(x).abs();
}


/*
 * Return a new Decimal whose value is the arccosine in radians of `x`.
 *
 * x {number|string|Decimal}
 *
 */
function acos(x) {
  return new this(x).acos();
}


/*
 * Return a new Decimal whose value is the inverse of the hyperbolic cosine of `x`, rounded to
 * `precision` significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function acosh(x) {
  return new this(x).acosh();
}


/*
 * Return a new Decimal whose value is the sum of `x` and `y`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 * y {number|string|Decimal}
 *
 */
function add(x, y) {
  return new this(x).plus(y);
}


/*
 * Return a new Decimal whose value is the arcsine in radians of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function asin(x) {
  return new this(x).asin();
}


/*
 * Return a new Decimal whose value is the inverse of the hyperbolic sine of `x`, rounded to
 * `precision` significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function asinh(x) {
  return new this(x).asinh();
}


/*
 * Return a new Decimal whose value is the arctangent in radians of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function atan(x) {
  return new this(x).atan();
}


/*
 * Return a new Decimal whose value is the inverse of the hyperbolic tangent of `x`, rounded to
 * `precision` significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function atanh(x) {
  return new this(x).atanh();
}


/*
 * Return a new Decimal whose value is the arctangent in radians of `y/x` in the range -pi to pi
 * (inclusive), rounded to `precision` significant digits using rounding mode `rounding`.
 *
 * Domain: [-Infinity, Infinity]
 * Range: [-pi, pi]
 *
 * y {number|string|Decimal} The y-coordinate.
 * x {number|string|Decimal} The x-coordinate.
 *
 * atan2(±0, -0)               = ±pi
 * atan2(±0, +0)               = ±0
 * atan2(±0, -x)               = ±pi for x > 0
 * atan2(±0, x)                = ±0 for x > 0
 * atan2(-y, ±0)               = -pi/2 for y > 0
 * atan2(y, ±0)                = pi/2 for y > 0
 * atan2(±y, -Infinity)        = ±pi for finite y > 0
 * atan2(±y, +Infinity)        = ±0 for finite y > 0
 * atan2(±Infinity, x)         = ±pi/2 for finite x
 * atan2(±Infinity, -Infinity) = ±3*pi/4
 * atan2(±Infinity, +Infinity) = ±pi/4
 * atan2(NaN, x) = NaN
 * atan2(y, NaN) = NaN
 *
 */
function atan2(y, x) {
  y = new this(y);
  x = new this(x);
  var r,
    pr = this.precision,
    rm = this.rounding,
    wpr = pr + 4;

  // Either NaN
  if (!y.s || !x.s) {
    r = new this(NaN);

  // Both ±Infinity
  } else if (!y.d && !x.d) {
    r = getPi(this, wpr, 1).times(x.s > 0 ? 0.25 : 0.75);
    r.s = y.s;

  // x is ±Infinity or y is ±0
  } else if (!x.d || y.isZero()) {
    r = x.s < 0 ? getPi(this, pr, rm) : new this(0);
    r.s = y.s;

  // y is ±Infinity or x is ±0
  } else if (!y.d || x.isZero()) {
    r = getPi(this, wpr, 1).times(0.5);
    r.s = y.s;

  // Both non-zero and finite
  } else if (x.s < 0) {
    this.precision = wpr;
    this.rounding = 1;
    r = this.atan(divide(y, x, wpr, 1));
    x = getPi(this, wpr, 1);
    this.precision = pr;
    this.rounding = rm;
    r = y.s < 0 ? r.minus(x) : r.plus(x);
  } else {
    r = this.atan(divide(y, x, wpr, 1));
  }

  return r;
}


/*
 * Return a new Decimal whose value is the cube root of `x`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function cbrt(x) {
  return new this(x).cbrt();
}


/*
 * Return a new Decimal whose value is `x` rounded to an integer using `ROUND_CEIL`.
 *
 * x {number|string|Decimal}
 *
 */
function ceil(x) {
  return finalise(x = new this(x), x.e + 1, 2);
}


/*
 * Configure global settings for a Decimal constructor.
 *
 * `obj` is an object with one or more of the following properties,
 *
 *   precision  {number}
 *   rounding   {number}
 *   toExpNeg   {number}
 *   toExpPos   {number}
 *   maxE       {number}
 *   minE       {number}
 *   modulo     {number}
 *   crypto     {boolean|number}
 *
 * E.g. Decimal.config({ precision: 20, rounding: 4 })
 *
 */
function config(obj) {
  if (!obj || typeof obj !== 'object') throw Error(decimalError + 'Object expected');
  var i, p, v,
    ps = [
      'precision', 1, MAX_DIGITS,
      'rounding', 0, 8,
      'toExpNeg', -EXP_LIMIT, 0,
      'toExpPos', 0, EXP_LIMIT,
      'maxE', 0, EXP_LIMIT,
      'minE', -EXP_LIMIT, 0,
      'modulo', 0, 9
    ];

  for (i = 0; i < ps.length; i += 3) {
    if ((v = obj[p = ps[i]]) !== void 0) {
      if (mathfloor(v) === v && v >= ps[i + 1] && v <= ps[i + 2]) this[p] = v;
      else throw Error(invalidArgument + p + ': ' + v);
    }
  }

  if ((v = obj[p = 'crypto']) !== void 0) {
    if (v === true || v === false || v === 0 || v === 1) {
      if (v) {
        if (typeof crypto != 'undefined' && crypto &&
          (crypto.getRandomValues || crypto.randomBytes)) {
          this[p] = true;
        } else {
          throw Error(cryptoUnavailable);
        }
      } else {
        this[p] = false;
      }
    } else {
      throw Error(invalidArgument + p + ': ' + v);
    }
  }

  return this;
}


/*
 * Return a new Decimal whose value is the cosine of `x`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function cos(x) {
  return new this(x).cos();
}


/*
 * Return a new Decimal whose value is the hyperbolic cosine of `x`, rounded to precision
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function cosh(x) {
  return new this(x).cosh();
}


/*
 * Create and return a Decimal constructor with the same configuration properties as this Decimal
 * constructor.
 *
 */
function clone(obj) {
  var i, p, ps;

  /*
   * The Decimal constructor and exported function.
   * Return a new Decimal instance.
   *
   * v {number|string|Decimal} A numeric value.
   *
   */
  function Decimal(v) {
    var e, i, t,
      x = this;

    // Decimal called without new.
    if (!(x instanceof Decimal)) return new Decimal(v);

    // Retain a reference to this Decimal constructor, and shadow Decimal.prototype.constructor
    // which points to Object.
    x.constructor = Decimal;

    // Duplicate.
    if (v instanceof Decimal) {
      x.s = v.s;
      x.e = v.e;
      x.d = (v = v.d) ? v.slice() : v;
      return;
    }

    t = typeof v;

    if (t === 'number') {
      if (v === 0) {
        x.s = 1 / v < 0 ? -1 : 1;
        x.e = 0;
        x.d = [0];
        return;
      }

      if (v < 0) {
        v = -v;
        x.s = -1;
      } else {
        x.s = 1;
      }

      // Fast path for small integers.
      if (v === ~~v && v < 1e7) {
        for (e = 0, i = v; i >= 10; i /= 10) e++;
        x.e = e;
        x.d = [v];
        return;

      // Infinity, NaN.
      } else if (v * 0 !== 0) {
        if (!v) x.s = NaN;
        x.e = NaN;
        x.d = null;
        return;
      }

      return parseDecimal(x, v.toString());

    } else if (t !== 'string') {
      throw Error(invalidArgument + v);
    }

    // Minus sign?
    if (v.charCodeAt(0) === 45) {
      v = v.slice(1);
      x.s = -1;
    } else {
      x.s = 1;
    }

    return isDecimal.test(v) ? parseDecimal(x, v) : parseOther(x, v);
  }

  Decimal.prototype = P;

  Decimal.ROUND_UP = 0;
  Decimal.ROUND_DOWN = 1;
  Decimal.ROUND_CEIL = 2;
  Decimal.ROUND_FLOOR = 3;
  Decimal.ROUND_HALF_UP = 4;
  Decimal.ROUND_HALF_DOWN = 5;
  Decimal.ROUND_HALF_EVEN = 6;
  Decimal.ROUND_HALF_CEIL = 7;
  Decimal.ROUND_HALF_FLOOR = 8;
  Decimal.EUCLID = 9;

  Decimal.config = Decimal.set = config;
  Decimal.clone = clone;

  Decimal.abs = abs;
  Decimal.acos = acos;
  Decimal.acosh = acosh;        // ES6
  Decimal.add = add;
  Decimal.asin = asin;
  Decimal.asinh = asinh;        // ES6
  Decimal.atan = atan;
  Decimal.atanh = atanh;        // ES6
  Decimal.atan2 = atan2;
  Decimal.cbrt = cbrt;          // ES6
  Decimal.ceil = ceil;
  Decimal.cos = cos;
  Decimal.cosh = cosh;          // ES6
  Decimal.div = div;
  Decimal.exp = exp;
  Decimal.floor = floor;
  Decimal.hypot = hypot;        // ES6
  Decimal.ln = ln;
  Decimal.log = log;
  Decimal.log10 = log10;        // ES6
  Decimal.log2 = log2;          // ES6
  Decimal.max = max;
  Decimal.min = min;
  Decimal.mod = mod;
  Decimal.mul = mul;
  Decimal.pow = pow;
  Decimal.random = random;
  Decimal.round = round;
  Decimal.sign = sign;          // ES6
  Decimal.sin = sin;
  Decimal.sinh = sinh;          // ES6
  Decimal.sqrt = sqrt;
  Decimal.sub = sub;
  Decimal.tan = tan;
  Decimal.tanh = tanh;          // ES6
  Decimal.trunc = trunc;        // ES6

  if (obj === void 0) obj = {};
  if (obj) {
    ps = ['precision', 'rounding', 'toExpNeg', 'toExpPos', 'maxE', 'minE', 'modulo', 'crypto'];
    for (i = 0; i < ps.length;) if (!obj.hasOwnProperty(p = ps[i++])) obj[p] = this[p];
  }

  Decimal.config(obj);

  return Decimal;
}


/*
 * Return a new Decimal whose value is `x` divided by `y`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 * y {number|string|Decimal}
 *
 */
function div(x, y) {
  return new this(x).div(y);
}


/*
 * Return a new Decimal whose value is the natural exponential of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} The power to which to raise the base of the natural log.
 *
 */
function exp(x) {
  return new this(x).exp();
}


/*
 * Return a new Decimal whose value is `x` round to an integer using `ROUND_FLOOR`.
 *
 * x {number|string|Decimal}
 *
 */
function floor(x) {
  return finalise(x = new this(x), x.e + 1, 3);
}


/*
 * Return a new Decimal whose value is the square root of the sum of the squares of the arguments,
 * rounded to `precision` significant digits using rounding mode `rounding`.
 *
 * hypot(a, b, ...) = sqrt(a^2 + b^2 + ...)
 *
 */
function hypot() {
  var i, n,
    t = new this(0);

  external = false;

  for (i = 0; i < arguments.length;) {
    n = new this(arguments[i++]);
    if (!n.d) {
      if (n.s) {
        external = true;
        return new this(1 / 0);
      }
      t = n;
    } else if (t.d) {
      t = t.plus(n.times(n));
    }
  }

  external = true;

  return t.sqrt();
}


/*
 * Return a new Decimal whose value is the natural logarithm of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function ln(x) {
  return new this(x).ln();
}


/*
 * Return a new Decimal whose value is the log of `x` to the base `y`, or to base 10 if no base
 * is specified, rounded to `precision` significant digits using rounding mode `rounding`.
 *
 * log[y](x)
 *
 * x {number|string|Decimal} The argument of the logarithm.
 * y {number|string|Decimal} The base of the logarithm.
 *
 */
function log(x, y) {
  return new this(x).log(y);
}


/*
 * Return a new Decimal whose value is the base 2 logarithm of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function log2(x) {
  return new this(x).log(2);
}


/*
 * Return a new Decimal whose value is the base 10 logarithm of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function log10(x) {
  return new this(x).log(10);
}


/*
 * Return a new Decimal whose value is the maximum of the arguments.
 *
 * arguments {number|string|Decimal}
 *
 */
function max() {
  return maxOrMin(this, arguments, 'lt');
}


/*
 * Return a new Decimal whose value is the minimum of the arguments.
 *
 * arguments {number|string|Decimal}
 *
 */
function min() {
  return maxOrMin(this, arguments, 'gt');
}


/*
 * Return a new Decimal whose value is `x` modulo `y`, rounded to `precision` significant digits
 * using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 * y {number|string|Decimal}
 *
 */
function mod(x, y) {
  return new this(x).mod(y);
}


/*
 * Return a new Decimal whose value is `x` multiplied by `y`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 * y {number|string|Decimal}
 *
 */
function mul(x, y) {
  return new this(x).mul(y);
}


/*
 * Return a new Decimal whose value is `x` raised to the power `y`, rounded to precision
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} The base.
 * y {number|string|Decimal} The exponent.
 *
 */
function pow(x, y) {
  return new this(x).pow(y);
}


/*
 * Returns a new Decimal with a random value equal to or greater than 0 and less than 1, and with
 * `sd`, or `Decimal.precision` if `sd` is omitted, significant digits (or less if trailing zeros
 * are produced).
 *
 * [sd] {number} Significant digits. Integer, 0 to MAX_DIGITS inclusive.
 *
 */
function random(sd) {
  var d, e, k, n,
    i = 0,
    r = new this(1),
    rd = [];

  if (sd === void 0) sd = this.precision;
  else checkInt32(sd, 1, MAX_DIGITS);

  k = Math.ceil(sd / LOG_BASE);

  if (!this.crypto) {
    for (; i < k;) rd[i++] = Math.random() * 1e7 | 0;

  // Browsers supporting crypto.getRandomValues.
  } else if (crypto.getRandomValues) {
    d = crypto.getRandomValues(new Uint32Array(k));

    for (; i < k;) {
      n = d[i];

      // 0 <= n < 4294967296
      // Probability n >= 4.29e9, is 4967296 / 4294967296 = 0.00116 (1 in 865).
      if (n >= 4.29e9) {
        d[i] = crypto.getRandomValues(new Uint32Array(1))[0];
      } else {

        // 0 <= n <= 4289999999
        // 0 <= (n % 1e7) <= 9999999
        rd[i++] = n % 1e7;
      }
    }

  // Node.js supporting crypto.randomBytes.
  } else if (crypto.randomBytes) {

    // buffer
    d = crypto.randomBytes(k *= 4);

    for (; i < k;) {

      // 0 <= n < 2147483648
      n = d[i] + (d[i + 1] << 8) + (d[i + 2] << 16) + ((d[i + 3] & 0x7f) << 24);

      // Probability n >= 2.14e9, is 7483648 / 2147483648 = 0.0035 (1 in 286).
      if (n >= 2.14e9) {
        crypto.randomBytes(4).copy(d, i);
      } else {

        // 0 <= n <= 2139999999
        // 0 <= (n % 1e7) <= 9999999
        rd.push(n % 1e7);
        i += 4;
      }
    }

    i = k / 4;
  } else {
    throw Error(cryptoUnavailable);
  }

  k = rd[--i];
  sd %= LOG_BASE;

  // Convert trailing digits to zeros according to sd.
  if (k && sd) {
    n = mathpow(10, LOG_BASE - sd);
    rd[i] = (k / n | 0) * n;
  }

  // Remove trailing words which are zero.
  for (; rd[i] === 0; i--) rd.pop();

  // Zero?
  if (i < 0) {
    e = 0;
    rd = [0];
  } else {
    e = -1;

    // Remove leading words which are zero and adjust exponent accordingly.
    for (; rd[0] === 0; e -= LOG_BASE) rd.shift();

    // Count the digits of the first word of rd to determine leading zeros.
    for (k = 1, n = rd[0]; n >= 10; n /= 10) k++;

    // Adjust the exponent for leading zeros of the first word of rd.
    if (k < LOG_BASE) e -= LOG_BASE - k;
  }

  r.e = e;
  r.d = rd;

  return r;
}


/*
 * Return a new Decimal whose value is `x` rounded to an integer using rounding mode `rounding`.
 *
 * To emulate `Math.round`, set rounding to 7 (ROUND_HALF_CEIL).
 *
 * x {number|string|Decimal}
 *
 */
function round(x) {
  return finalise(x = new this(x), x.e + 1, this.rounding);
}


/*
 * Return
 *   1    if x > 0,
 *  -1    if x < 0,
 *   0    if x is 0,
 *  -0    if x is -0,
 *   NaN  otherwise
 *
 */
function sign(x) {
  x = new this(x);
  return x.d ? (x.d[0] ? x.s : 0 * x.s) : x.s || NaN;
}


/*
 * Return a new Decimal whose value is the sine of `x`, rounded to `precision` significant digits
 * using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function sin(x) {
  return new this(x).sin();
}


/*
 * Return a new Decimal whose value is the hyperbolic sine of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function sinh(x) {
  return new this(x).sinh();
}


/*
 * Return a new Decimal whose value is the square root of `x`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 *
 */
function sqrt(x) {
  return new this(x).sqrt();
}


/*
 * Return a new Decimal whose value is `x` minus `y`, rounded to `precision` significant digits
 * using rounding mode `rounding`.
 *
 * x {number|string|Decimal}
 * y {number|string|Decimal}
 *
 */
function sub(x, y) {
  return new this(x).sub(y);
}


/*
 * Return a new Decimal whose value is the tangent of `x`, rounded to `precision` significant
 * digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function tan(x) {
  return new this(x).tan();
}


/*
 * Return a new Decimal whose value is the hyperbolic tangent of `x`, rounded to `precision`
 * significant digits using rounding mode `rounding`.
 *
 * x {number|string|Decimal} A value in radians.
 *
 */
function tanh(x) {
  return new this(x).tanh();
}


/*
 * Return a new Decimal whose value is `x` truncated to an integer.
 *
 * x {number|string|Decimal}
 *
 */
function trunc(x) {
  return finalise(x = new this(x), x.e + 1, 1);
}


// Create and configure initial Decimal constructor.
Decimal = clone(defaults);

// Create the internal constants from their string values.
LN10 = new Decimal(ln10);
PI = new Decimal(pi);

/* harmony default export */ __webpack_exports__["a"] = (Decimal);


/***/ }),
/* 45 */,
/* 46 */,
/* 47 */,
/* 48 */,
/* 49 */,
/* 50 */,
/* 51 */,
/* 52 */,
/* 53 */,
/* 54 */,
/* 55 */,
/* 56 */,
/* 57 */,
/* 58 */,
/* 59 */,
/* 60 */
/*!*****************************************!*\
  !*** ./node_modules/jszip/lib/utils.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var support = __webpack_require__(/*! ./support */ 113);
var base64 = __webpack_require__(/*! ./base64 */ 229);
var nodejsUtils = __webpack_require__(/*! ./nodejsUtils */ 155);
var setImmediate = __webpack_require__(/*! core-js/library/fn/set-immediate */ 423);
var external = __webpack_require__(/*! ./external */ 143);


/**
 * Convert a string that pass as a "binary string": it should represent a byte
 * array but may have > 255 char codes. Be sure to take only the first byte
 * and returns the byte array.
 * @param {String} str the string to transform.
 * @return {Array|Uint8Array} the string in a binary format.
 */
function string2binary(str) {
    var result = null;
    if (support.uint8array) {
      result = new Uint8Array(str.length);
    } else {
      result = new Array(str.length);
    }
    return stringToArrayLike(str, result);
}

/**
 * Create a new blob with the given content and the given type.
 * @param {String|ArrayBuffer} part the content to put in the blob. DO NOT use
 * an Uint8Array because the stock browser of android 4 won't accept it (it
 * will be silently converted to a string, "[object Uint8Array]").
 *
 * Use only ONE part to build the blob to avoid a memory leak in IE11 / Edge:
 * when a large amount of Array is used to create the Blob, the amount of
 * memory consumed is nearly 100 times the original data amount.
 *
 * @param {String} type the mime type of the blob.
 * @return {Blob} the created blob.
 */
exports.newBlob = function(part, type) {
    exports.checkSupport("blob");

    try {
        // Blob constructor
        return new Blob([part], {
            type: type
        });
    }
    catch (e) {

        try {
            // deprecated, browser only, old way
            var Builder = self.BlobBuilder || self.WebKitBlobBuilder || self.MozBlobBuilder || self.MSBlobBuilder;
            var builder = new Builder();
            builder.append(part);
            return builder.getBlob(type);
        }
        catch (e) {

            // well, fuck ?!
            throw new Error("Bug : can't construct the Blob.");
        }
    }


};
/**
 * The identity function.
 * @param {Object} input the input.
 * @return {Object} the same input.
 */
function identity(input) {
    return input;
}

/**
 * Fill in an array with a string.
 * @param {String} str the string to use.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to fill in (will be mutated).
 * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated array.
 */
function stringToArrayLike(str, array) {
    for (var i = 0; i < str.length; ++i) {
        array[i] = str.charCodeAt(i) & 0xFF;
    }
    return array;
}

/**
 * An helper for the function arrayLikeToString.
 * This contains static informations and functions that
 * can be optimized by the browser JIT compiler.
 */
var arrayToStringHelper = {
    /**
     * Transform an array of int into a string, chunk by chunk.
     * See the performances notes on arrayLikeToString.
     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
     * @param {String} type the type of the array.
     * @param {Integer} chunk the chunk size.
     * @return {String} the resulting string.
     * @throws Error if the chunk is too big for the stack.
     */
    stringifyByChunk: function(array, type, chunk) {
        var result = [], k = 0, len = array.length;
        // shortcut
        if (len <= chunk) {
            return String.fromCharCode.apply(null, array);
        }
        while (k < len) {
            if (type === "array" || type === "nodebuffer") {
                result.push(String.fromCharCode.apply(null, array.slice(k, Math.min(k + chunk, len))));
            }
            else {
                result.push(String.fromCharCode.apply(null, array.subarray(k, Math.min(k + chunk, len))));
            }
            k += chunk;
        }
        return result.join("");
    },
    /**
     * Call String.fromCharCode on every item in the array.
     * This is the naive implementation, which generate A LOT of intermediate string.
     * This should be used when everything else fail.
     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
     * @return {String} the result.
     */
    stringifyByChar: function(array){
        var resultStr = "";
        for(var i = 0; i < array.length; i++) {
            resultStr += String.fromCharCode(array[i]);
        }
        return resultStr;
    },
    applyCanBeUsed : {
        /**
         * true if the browser accepts to use String.fromCharCode on Uint8Array
         */
        uint8array : (function () {
            try {
                return support.uint8array && String.fromCharCode.apply(null, new Uint8Array(1)).length === 1;
            } catch (e) {
                return false;
            }
        })(),
        /**
         * true if the browser accepts to use String.fromCharCode on nodejs Buffer.
         */
        nodebuffer : (function () {
            try {
                return support.nodebuffer && String.fromCharCode.apply(null, nodejsUtils.allocBuffer(1)).length === 1;
            } catch (e) {
                return false;
            }
        })()
    }
};

/**
 * Transform an array-like object to a string.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
 * @return {String} the result.
 */
function arrayLikeToString(array) {
    // Performances notes :
    // --------------------
    // String.fromCharCode.apply(null, array) is the fastest, see
    // see http://jsperf.com/converting-a-uint8array-to-a-string/2
    // but the stack is limited (and we can get huge arrays !).
    //
    // result += String.fromCharCode(array[i]); generate too many strings !
    //
    // This code is inspired by http://jsperf.com/arraybuffer-to-string-apply-performance/2
    // TODO : we now have workers that split the work. Do we still need that ?
    var chunk = 65536,
        type = exports.getTypeOf(array),
        canUseApply = true;
    if (type === "uint8array") {
        canUseApply = arrayToStringHelper.applyCanBeUsed.uint8array;
    } else if (type === "nodebuffer") {
        canUseApply = arrayToStringHelper.applyCanBeUsed.nodebuffer;
    }

    if (canUseApply) {
        while (chunk > 1) {
            try {
                return arrayToStringHelper.stringifyByChunk(array, type, chunk);
            } catch (e) {
                chunk = Math.floor(chunk / 2);
            }
        }
    }

    // no apply or chunk error : slow and painful algorithm
    // default browser on android 4.*
    return arrayToStringHelper.stringifyByChar(array);
}

exports.applyFromCharCode = arrayLikeToString;


/**
 * Copy the data from an array-like to an other array-like.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.
 * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.
 */
function arrayLikeToArrayLike(arrayFrom, arrayTo) {
    for (var i = 0; i < arrayFrom.length; i++) {
        arrayTo[i] = arrayFrom[i];
    }
    return arrayTo;
}

// a matrix containing functions to transform everything into everything.
var transform = {};

// string to ?
transform["string"] = {
    "string": identity,
    "array": function(input) {
        return stringToArrayLike(input, new Array(input.length));
    },
    "arraybuffer": function(input) {
        return transform["string"]["uint8array"](input).buffer;
    },
    "uint8array": function(input) {
        return stringToArrayLike(input, new Uint8Array(input.length));
    },
    "nodebuffer": function(input) {
        return stringToArrayLike(input, nodejsUtils.allocBuffer(input.length));
    }
};

// array to ?
transform["array"] = {
    "string": arrayLikeToString,
    "array": identity,
    "arraybuffer": function(input) {
        return (new Uint8Array(input)).buffer;
    },
    "uint8array": function(input) {
        return new Uint8Array(input);
    },
    "nodebuffer": function(input) {
        return nodejsUtils.newBufferFrom(input);
    }
};

// arraybuffer to ?
transform["arraybuffer"] = {
    "string": function(input) {
        return arrayLikeToString(new Uint8Array(input));
    },
    "array": function(input) {
        return arrayLikeToArrayLike(new Uint8Array(input), new Array(input.byteLength));
    },
    "arraybuffer": identity,
    "uint8array": function(input) {
        return new Uint8Array(input);
    },
    "nodebuffer": function(input) {
        return nodejsUtils.newBufferFrom(new Uint8Array(input));
    }
};

// uint8array to ?
transform["uint8array"] = {
    "string": arrayLikeToString,
    "array": function(input) {
        return arrayLikeToArrayLike(input, new Array(input.length));
    },
    "arraybuffer": function(input) {
        return input.buffer;
    },
    "uint8array": identity,
    "nodebuffer": function(input) {
        return nodejsUtils.newBufferFrom(input);
    }
};

// nodebuffer to ?
transform["nodebuffer"] = {
    "string": arrayLikeToString,
    "array": function(input) {
        return arrayLikeToArrayLike(input, new Array(input.length));
    },
    "arraybuffer": function(input) {
        return transform["nodebuffer"]["uint8array"](input).buffer;
    },
    "uint8array": function(input) {
        return arrayLikeToArrayLike(input, new Uint8Array(input.length));
    },
    "nodebuffer": identity
};

/**
 * Transform an input into any type.
 * The supported output type are : string, array, uint8array, arraybuffer, nodebuffer.
 * If no output type is specified, the unmodified input will be returned.
 * @param {String} outputType the output type.
 * @param {String|Array|ArrayBuffer|Uint8Array|Buffer} input the input to convert.
 * @throws {Error} an Error if the browser doesn't support the requested output type.
 */
exports.transformTo = function(outputType, input) {
    if (!input) {
        // undefined, null, etc
        // an empty string won't harm.
        input = "";
    }
    if (!outputType) {
        return input;
    }
    exports.checkSupport(outputType);
    var inputType = exports.getTypeOf(input);
    var result = transform[inputType][outputType](input);
    return result;
};

/**
 * Return the type of the input.
 * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.
 * @param {Object} input the input to identify.
 * @return {String} the (lowercase) type of the input.
 */
exports.getTypeOf = function(input) {
    if (typeof input === "string") {
        return "string";
    }
    if (Object.prototype.toString.call(input) === "[object Array]") {
        return "array";
    }
    if (support.nodebuffer && nodejsUtils.isBuffer(input)) {
        return "nodebuffer";
    }
    if (support.uint8array && input instanceof Uint8Array) {
        return "uint8array";
    }
    if (support.arraybuffer && input instanceof ArrayBuffer) {
        return "arraybuffer";
    }
};

/**
 * Throw an exception if the type is not supported.
 * @param {String} type the type to check.
 * @throws {Error} an Error if the browser doesn't support the requested type.
 */
exports.checkSupport = function(type) {
    var supported = support[type.toLowerCase()];
    if (!supported) {
        throw new Error(type + " is not supported by this platform");
    }
};

exports.MAX_VALUE_16BITS = 65535;
exports.MAX_VALUE_32BITS = -1; // well, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" is parsed as -1

/**
 * Prettify a string read as binary.
 * @param {string} str the string to prettify.
 * @return {string} a pretty string.
 */
exports.pretty = function(str) {
    var res = '',
        code, i;
    for (i = 0; i < (str || "").length; i++) {
        code = str.charCodeAt(i);
        res += '\\x' + (code < 16 ? "0" : "") + code.toString(16).toUpperCase();
    }
    return res;
};

/**
 * Defer the call of a function.
 * @param {Function} callback the function to call asynchronously.
 * @param {Array} args the arguments to give to the callback.
 */
exports.delay = function(callback, args, self) {
    setImmediate(function () {
        callback.apply(self || null, args || []);
    });
};

/**
 * Extends a prototype with an other, without calling a constructor with
 * side effects. Inspired by nodejs' `utils.inherits`
 * @param {Function} ctor the constructor to augment
 * @param {Function} superCtor the parent constructor to use
 */
exports.inherits = function (ctor, superCtor) {
    var Obj = function() {};
    Obj.prototype = superCtor.prototype;
    ctor.prototype = new Obj();
};

/**
 * Merge the objects passed as parameters into a new one.
 * @private
 * @param {...Object} var_args All objects to merge.
 * @return {Object} a new object with the data of the others.
 */
exports.extend = function() {
    var result = {}, i, attr;
    for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers
        for (attr in arguments[i]) {
            if (arguments[i].hasOwnProperty(attr) && typeof result[attr] === "undefined") {
                result[attr] = arguments[i][attr];
            }
        }
    }
    return result;
};

/**
 * Transform arbitrary content into a Promise.
 * @param {String} name a name for the content being processed.
 * @param {Object} inputData the content to process.
 * @param {Boolean} isBinary true if the content is not an unicode string
 * @param {Boolean} isOptimizedBinaryString true if the string content only has one byte per character.
 * @param {Boolean} isBase64 true if the string content is encoded with base64.
 * @return {Promise} a promise in a format usable by JSZip.
 */
exports.prepareContent = function(name, inputData, isBinary, isOptimizedBinaryString, isBase64) {

    // if inputData is already a promise, this flatten it.
    var promise = external.Promise.resolve(inputData).then(function(data) {
        
        
        var isBlob = support.blob && (data instanceof Blob || ['[object File]', '[object Blob]'].indexOf(Object.prototype.toString.call(data)) !== -1);

        if (isBlob && typeof FileReader !== "undefined") {
            return new external.Promise(function (resolve, reject) {
                var reader = new FileReader();

                reader.onload = function(e) {
                    resolve(e.target.result);
                };
                reader.onerror = function(e) {
                    reject(e.target.error);
                };
                reader.readAsArrayBuffer(data);
            });
        } else {
            return data;
        }
    });

    return promise.then(function(data) {
        var dataType = exports.getTypeOf(data);

        if (!dataType) {
            return external.Promise.reject(
                new Error("Can't read the data of '" + name + "'. Is it " +
                          "in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?")
            );
        }
        // special case : it's way easier to work with Uint8Array than with ArrayBuffer
        if (dataType === "arraybuffer") {
            data = exports.transformTo("uint8array", data);
        } else if (dataType === "string") {
            if (isBase64) {
                data = base64.decode(data);
            }
            else if (isBinary) {
                // optimizedBinaryString === true means that the file has already been filtered with a 0xFF mask
                if (isOptimizedBinaryString !== true) {
                    // this is a string, not in a base64 format.
                    // Be sure that this is a correct "binary string"
                    data = string2binary(data);
                }
            }
        }
        return data;
    });
};


/***/ }),
/* 61 */,
/* 62 */,
/* 63 */,
/* 64 */
/*!*****************************************!*\
  !*** ./node_modules/react-dom/index.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


function checkDCE() {
  /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
  if (
    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined' ||
    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE !== 'function'
  ) {
    return;
  }
  if (true) {
    // This branch is unreachable because this function is only called
    // in production, but the condition is true only in development.
    // Therefore if the branch is still here, dead code elimination wasn't
    // properly applied.
    // Don't change the message. React DevTools relies on it. Also make sure
    // this message doesn't occur elsewhere in this function, or it will cause
    // a false positive.
    throw new Error('^_^');
  }
  try {
    // Verify that the code above has been dead code eliminated (DCE'd).
    __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE(checkDCE);
  } catch (err) {
    // DevTools shouldn't crash React, no matter what.
    // We should still report in case we break this code.
    console.error(err);
  }
}

if (false) {} else {
  module.exports = __webpack_require__(/*! ./cjs/react-dom.development.js */ 646);
}


/***/ }),
/* 65 */,
/* 66 */,
/* 67 */,
/* 68 */,
/* 69 */,
/* 70 */,
/* 71 */,
/* 72 */,
/* 73 */,
/* 74 */,
/* 75 */,
/* 76 */,
/* 77 */,
/* 78 */,
/* 79 */,
/* 80 */,
/* 81 */
/*!*****************************************!*\
  !*** ./node_modules/numeral/numeral.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_RESULT__;/*! @preserve
 * numeral.js
 * version : 2.0.6
 * author : Adam Draper
 * license : MIT
 * http://adamwdraper.github.com/Numeral-js/
 */

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.call(exports, __webpack_require__, exports, module)) :
				__WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function () {
    /************************************
        Variables
    ************************************/

    var numeral,
        _,
        VERSION = '2.0.6',
        formats = {},
        locales = {},
        defaults = {
            currentLocale: 'en',
            zeroFormat: null,
            nullFormat: null,
            defaultFormat: '0,0',
            scalePercentBy100: true
        },
        options = {
            currentLocale: defaults.currentLocale,
            zeroFormat: defaults.zeroFormat,
            nullFormat: defaults.nullFormat,
            defaultFormat: defaults.defaultFormat,
            scalePercentBy100: defaults.scalePercentBy100
        };


    /************************************
        Constructors
    ************************************/

    // Numeral prototype object
    function Numeral(input, number) {
        this._input = input;

        this._value = number;
    }

    numeral = function(input) {
        var value,
            kind,
            unformatFunction,
            regexp;

        if (numeral.isNumeral(input)) {
            value = input.value();
        } else if (input === 0 || typeof input === 'undefined') {
            value = 0;
        } else if (input === null || _.isNaN(input)) {
            value = null;
        } else if (typeof input === 'string') {
            if (options.zeroFormat && input === options.zeroFormat) {
                value = 0;
            } else if (options.nullFormat && input === options.nullFormat || !input.replace(/[^0-9]+/g, '').length) {
                value = null;
            } else {
                for (kind in formats) {
                    regexp = typeof formats[kind].regexps.unformat === 'function' ? formats[kind].regexps.unformat() : formats[kind].regexps.unformat;

                    if (regexp && input.match(regexp)) {
                        unformatFunction = formats[kind].unformat;

                        break;
                    }
                }

                unformatFunction = unformatFunction || numeral._.stringToNumber;

                value = unformatFunction(input);
            }
        } else {
            value = Number(input)|| null;
        }

        return new Numeral(input, value);
    };

    // version number
    numeral.version = VERSION;

    // compare numeral object
    numeral.isNumeral = function(obj) {
        return obj instanceof Numeral;
    };

    // helper functions
    numeral._ = _ = {
        // formats numbers separators, decimals places, signs, abbreviations
        numberToFormat: function(value, format, roundingFunction) {
            var locale = locales[numeral.options.currentLocale],
                negP = false,
                optDec = false,
                leadingCount = 0,
                abbr = '',
                trillion = 1000000000000,
                billion = 1000000000,
                million = 1000000,
                thousand = 1000,
                decimal = '',
                neg = false,
                abbrForce, // force abbreviation
                abs,
                min,
                max,
                power,
                int,
                precision,
                signed,
                thousands,
                output;

            // make sure we never format a null value
            value = value || 0;

            abs = Math.abs(value);

            // see if we should use parentheses for negative number or if we should prefix with a sign
            // if both are present we default to parentheses
            if (numeral._.includes(format, '(')) {
                negP = true;
                format = format.replace(/[\(|\)]/g, '');
            } else if (numeral._.includes(format, '+') || numeral._.includes(format, '-')) {
                signed = numeral._.includes(format, '+') ? format.indexOf('+') : value < 0 ? format.indexOf('-') : -1;
                format = format.replace(/[\+|\-]/g, '');
            }

            // see if abbreviation is wanted
            if (numeral._.includes(format, 'a')) {
                abbrForce = format.match(/a(k|m|b|t)?/);

                abbrForce = abbrForce ? abbrForce[1] : false;

                // check for space before abbreviation
                if (numeral._.includes(format, ' a')) {
                    abbr = ' ';
                }

                format = format.replace(new RegExp(abbr + 'a[kmbt]?'), '');

                if (abs >= trillion && !abbrForce || abbrForce === 't') {
                    // trillion
                    abbr += locale.abbreviations.trillion;
                    value = value / trillion;
                } else if (abs < trillion && abs >= billion && !abbrForce || abbrForce === 'b') {
                    // billion
                    abbr += locale.abbreviations.billion;
                    value = value / billion;
                } else if (abs < billion && abs >= million && !abbrForce || abbrForce === 'm') {
                    // million
                    abbr += locale.abbreviations.million;
                    value = value / million;
                } else if (abs < million && abs >= thousand && !abbrForce || abbrForce === 'k') {
                    // thousand
                    abbr += locale.abbreviations.thousand;
                    value = value / thousand;
                }
            }

            // check for optional decimals
            if (numeral._.includes(format, '[.]')) {
                optDec = true;
                format = format.replace('[.]', '.');
            }

            // break number and format
            int = value.toString().split('.')[0];
            precision = format.split('.')[1];
            thousands = format.indexOf(',');
            leadingCount = (format.split('.')[0].split(',')[0].match(/0/g) || []).length;

            if (precision) {
                if (numeral._.includes(precision, '[')) {
                    precision = precision.replace(']', '');
                    precision = precision.split('[');
                    decimal = numeral._.toFixed(value, (precision[0].length + precision[1].length), roundingFunction, precision[1].length);
                } else {
                    decimal = numeral._.toFixed(value, precision.length, roundingFunction);
                }

                int = decimal.split('.')[0];

                if (numeral._.includes(decimal, '.')) {
                    decimal = locale.delimiters.decimal + decimal.split('.')[1];
                } else {
                    decimal = '';
                }

                if (optDec && Number(decimal.slice(1)) === 0) {
                    decimal = '';
                }
            } else {
                int = numeral._.toFixed(value, 0, roundingFunction);
            }

            // check abbreviation again after rounding
            if (abbr && !abbrForce && Number(int) >= 1000 && abbr !== locale.abbreviations.trillion) {
                int = String(Number(int) / 1000);

                switch (abbr) {
                    case locale.abbreviations.thousand:
                        abbr = locale.abbreviations.million;
                        break;
                    case locale.abbreviations.million:
                        abbr = locale.abbreviations.billion;
                        break;
                    case locale.abbreviations.billion:
                        abbr = locale.abbreviations.trillion;
                        break;
                }
            }


            // format number
            if (numeral._.includes(int, '-')) {
                int = int.slice(1);
                neg = true;
            }

            if (int.length < leadingCount) {
                for (var i = leadingCount - int.length; i > 0; i--) {
                    int = '0' + int;
                }
            }

            if (thousands > -1) {
                int = int.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1' + locale.delimiters.thousands);
            }

            if (format.indexOf('.') === 0) {
                int = '';
            }

            output = int + decimal + (abbr ? abbr : '');

            if (negP) {
                output = (negP && neg ? '(' : '') + output + (negP && neg ? ')' : '');
            } else {
                if (signed >= 0) {
                    output = signed === 0 ? (neg ? '-' : '+') + output : output + (neg ? '-' : '+');
                } else if (neg) {
                    output = '-' + output;
                }
            }

            return output;
        },
        // unformats numbers separators, decimals places, signs, abbreviations
        stringToNumber: function(string) {
            var locale = locales[options.currentLocale],
                stringOriginal = string,
                abbreviations = {
                    thousand: 3,
                    million: 6,
                    billion: 9,
                    trillion: 12
                },
                abbreviation,
                value,
                i,
                regexp;

            if (options.zeroFormat && string === options.zeroFormat) {
                value = 0;
            } else if (options.nullFormat && string === options.nullFormat || !string.replace(/[^0-9]+/g, '').length) {
                value = null;
            } else {
                value = 1;

                if (locale.delimiters.decimal !== '.') {
                    string = string.replace(/\./g, '').replace(locale.delimiters.decimal, '.');
                }

                for (abbreviation in abbreviations) {
                    regexp = new RegExp('[^a-zA-Z]' + locale.abbreviations[abbreviation] + '(?:\\)|(\\' + locale.currency.symbol + ')?(?:\\))?)?$');

                    if (stringOriginal.match(regexp)) {
                        value *= Math.pow(10, abbreviations[abbreviation]);
                        break;
                    }
                }

                // check for negative number
                value *= (string.split('-').length + Math.min(string.split('(').length - 1, string.split(')').length - 1)) % 2 ? 1 : -1;

                // remove non numbers
                string = string.replace(/[^0-9\.]+/g, '');

                value *= Number(string);
            }

            return value;
        },
        isNaN: function(value) {
            return typeof value === 'number' && isNaN(value);
        },
        includes: function(string, search) {
            return string.indexOf(search) !== -1;
        },
        insert: function(string, subString, start) {
            return string.slice(0, start) + subString + string.slice(start);
        },
        reduce: function(array, callback /*, initialValue*/) {
            if (this === null) {
                throw new TypeError('Array.prototype.reduce called on null or undefined');
            }

            if (typeof callback !== 'function') {
                throw new TypeError(callback + ' is not a function');
            }

            var t = Object(array),
                len = t.length >>> 0,
                k = 0,
                value;

            if (arguments.length === 3) {
                value = arguments[2];
            } else {
                while (k < len && !(k in t)) {
                    k++;
                }

                if (k >= len) {
                    throw new TypeError('Reduce of empty array with no initial value');
                }

                value = t[k++];
            }
            for (; k < len; k++) {
                if (k in t) {
                    value = callback(value, t[k], k, t);
                }
            }
            return value;
        },
        /**
         * Computes the multiplier necessary to make x >= 1,
         * effectively eliminating miscalculations caused by
         * finite precision.
         */
        multiplier: function (x) {
            var parts = x.toString().split('.');

            return parts.length < 2 ? 1 : Math.pow(10, parts[1].length);
        },
        /**
         * Given a variable number of arguments, returns the maximum
         * multiplier that must be used to normalize an operation involving
         * all of them.
         */
        correctionFactor: function () {
            var args = Array.prototype.slice.call(arguments);

            return args.reduce(function(accum, next) {
                var mn = _.multiplier(next);
                return accum > mn ? accum : mn;
            }, 1);
        },
        /**
         * Implementation of toFixed() that treats floats more like decimals
         *
         * Fixes binary rounding issues (eg. (0.615).toFixed(2) === '0.61') that present
         * problems for accounting- and finance-related software.
         */
        toFixed: function(value, maxDecimals, roundingFunction, optionals) {
            var splitValue = value.toString().split('.'),
                minDecimals = maxDecimals - (optionals || 0),
                boundedPrecision,
                optionalsRegExp,
                power,
                output;

            // Use the smallest precision value possible to avoid errors from floating point representation
            if (splitValue.length === 2) {
              boundedPrecision = Math.min(Math.max(splitValue[1].length, minDecimals), maxDecimals);
            } else {
              boundedPrecision = minDecimals;
            }

            power = Math.pow(10, boundedPrecision);

            // Multiply up by precision, round accurately, then divide and use native toFixed():
            output = (roundingFunction(value + 'e+' + boundedPrecision) / power).toFixed(boundedPrecision);

            if (optionals > maxDecimals - boundedPrecision) {
                optionalsRegExp = new RegExp('\\.?0{1,' + (optionals - (maxDecimals - boundedPrecision)) + '}$');
                output = output.replace(optionalsRegExp, '');
            }

            return output;
        }
    };

    // avaliable options
    numeral.options = options;

    // avaliable formats
    numeral.formats = formats;

    // avaliable formats
    numeral.locales = locales;

    // This function sets the current locale.  If
    // no arguments are passed in, it will simply return the current global
    // locale key.
    numeral.locale = function(key) {
        if (key) {
            options.currentLocale = key.toLowerCase();
        }

        return options.currentLocale;
    };

    // This function provides access to the loaded locale data.  If
    // no arguments are passed in, it will simply return the current
    // global locale object.
    numeral.localeData = function(key) {
        if (!key) {
            return locales[options.currentLocale];
        }

        key = key.toLowerCase();

        if (!locales[key]) {
            throw new Error('Unknown locale : ' + key);
        }

        return locales[key];
    };

    numeral.reset = function() {
        for (var property in defaults) {
            options[property] = defaults[property];
        }
    };

    numeral.zeroFormat = function(format) {
        options.zeroFormat = typeof(format) === 'string' ? format : null;
    };

    numeral.nullFormat = function (format) {
        options.nullFormat = typeof(format) === 'string' ? format : null;
    };

    numeral.defaultFormat = function(format) {
        options.defaultFormat = typeof(format) === 'string' ? format : '0.0';
    };

    numeral.register = function(type, name, format) {
        name = name.toLowerCase();

        if (this[type + 's'][name]) {
            throw new TypeError(name + ' ' + type + ' already registered.');
        }

        this[type + 's'][name] = format;

        return format;
    };


    numeral.validate = function(val, culture) {
        var _decimalSep,
            _thousandSep,
            _currSymbol,
            _valArray,
            _abbrObj,
            _thousandRegEx,
            localeData,
            temp;

        //coerce val to string
        if (typeof val !== 'string') {
            val += '';

            if (console.warn) {
                console.warn('Numeral.js: Value is not string. It has been co-erced to: ', val);
            }
        }

        //trim whitespaces from either sides
        val = val.trim();

        //if val is just digits return true
        if (!!val.match(/^\d+$/)) {
            return true;
        }

        //if val is empty return false
        if (val === '') {
            return false;
        }

        //get the decimal and thousands separator from numeral.localeData
        try {
            //check if the culture is understood by numeral. if not, default it to current locale
            localeData = numeral.localeData(culture);
        } catch (e) {
            localeData = numeral.localeData(numeral.locale());
        }

        //setup the delimiters and currency symbol based on culture/locale
        _currSymbol = localeData.currency.symbol;
        _abbrObj = localeData.abbreviations;
        _decimalSep = localeData.delimiters.decimal;
        if (localeData.delimiters.thousands === '.') {
            _thousandSep = '\\.';
        } else {
            _thousandSep = localeData.delimiters.thousands;
        }

        // validating currency symbol
        temp = val.match(/^[^\d]+/);
        if (temp !== null) {
            val = val.substr(1);
            if (temp[0] !== _currSymbol) {
                return false;
            }
        }

        //validating abbreviation symbol
        temp = val.match(/[^\d]+$/);
        if (temp !== null) {
            val = val.slice(0, -1);
            if (temp[0] !== _abbrObj.thousand && temp[0] !== _abbrObj.million && temp[0] !== _abbrObj.billion && temp[0] !== _abbrObj.trillion) {
                return false;
            }
        }

        _thousandRegEx = new RegExp(_thousandSep + '{2}');

        if (!val.match(/[^\d.,]/g)) {
            _valArray = val.split(_decimalSep);
            if (_valArray.length > 2) {
                return false;
            } else {
                if (_valArray.length < 2) {
                    return ( !! _valArray[0].match(/^\d+.*\d$/) && !_valArray[0].match(_thousandRegEx));
                } else {
                    if (_valArray[0].length === 1) {
                        return ( !! _valArray[0].match(/^\d+$/) && !_valArray[0].match(_thousandRegEx) && !! _valArray[1].match(/^\d+$/));
                    } else {
                        return ( !! _valArray[0].match(/^\d+.*\d$/) && !_valArray[0].match(_thousandRegEx) && !! _valArray[1].match(/^\d+$/));
                    }
                }
            }
        }

        return false;
    };


    /************************************
        Numeral Prototype
    ************************************/

    numeral.fn = Numeral.prototype = {
        clone: function() {
            return numeral(this);
        },
        format: function(inputString, roundingFunction) {
            var value = this._value,
                format = inputString || options.defaultFormat,
                kind,
                output,
                formatFunction;

            // make sure we have a roundingFunction
            roundingFunction = roundingFunction || Math.round;

            // format based on value
            if (value === 0 && options.zeroFormat !== null) {
                output = options.zeroFormat;
            } else if (value === null && options.nullFormat !== null) {
                output = options.nullFormat;
            } else {
                for (kind in formats) {
                    if (format.match(formats[kind].regexps.format)) {
                        formatFunction = formats[kind].format;

                        break;
                    }
                }

                formatFunction = formatFunction || numeral._.numberToFormat;

                output = formatFunction(value, format, roundingFunction);
            }

            return output;
        },
        value: function() {
            return this._value;
        },
        input: function() {
            return this._input;
        },
        set: function(value) {
            this._value = Number(value);

            return this;
        },
        add: function(value) {
            var corrFactor = _.correctionFactor.call(null, this._value, value);

            function cback(accum, curr, currI, O) {
                return accum + Math.round(corrFactor * curr);
            }

            this._value = _.reduce([this._value, value], cback, 0) / corrFactor;

            return this;
        },
        subtract: function(value) {
            var corrFactor = _.correctionFactor.call(null, this._value, value);

            function cback(accum, curr, currI, O) {
                return accum - Math.round(corrFactor * curr);
            }

            this._value = _.reduce([value], cback, Math.round(this._value * corrFactor)) / corrFactor;

            return this;
        },
        multiply: function(value) {
            function cback(accum, curr, currI, O) {
                var corrFactor = _.correctionFactor(accum, curr);
                return Math.round(accum * corrFactor) * Math.round(curr * corrFactor) / Math.round(corrFactor * corrFactor);
            }

            this._value = _.reduce([this._value, value], cback, 1);

            return this;
        },
        divide: function(value) {
            function cback(accum, curr, currI, O) {
                var corrFactor = _.correctionFactor(accum, curr);
                return Math.round(accum * corrFactor) / Math.round(curr * corrFactor);
            }

            this._value = _.reduce([this._value, value], cback);

            return this;
        },
        difference: function(value) {
            return Math.abs(numeral(this._value).subtract(value).value());
        }
    };

    /************************************
        Default Locale && Format
    ************************************/

    numeral.register('locale', 'en', {
        delimiters: {
            thousands: ',',
            decimal: '.'
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function(number) {
            var b = number % 10;
            return (~~(number % 100 / 10) === 1) ? 'th' :
                (b === 1) ? 'st' :
                (b === 2) ? 'nd' :
                (b === 3) ? 'rd' : 'th';
        },
        currency: {
            symbol: '$'
        }
    });

    

(function() {
        numeral.register('format', 'bps', {
            regexps: {
                format: /(BPS)/,
                unformat: /(BPS)/
            },
            format: function(value, format, roundingFunction) {
                var space = numeral._.includes(format, ' BPS') ? ' ' : '',
                    output;

                value = value * 10000;

                // check for space before BPS
                format = format.replace(/\s?BPS/, '');

                output = numeral._.numberToFormat(value, format, roundingFunction);

                if (numeral._.includes(output, ')')) {
                    output = output.split('');

                    output.splice(-1, 0, space + 'BPS');

                    output = output.join('');
                } else {
                    output = output + space + 'BPS';
                }

                return output;
            },
            unformat: function(string) {
                return +(numeral._.stringToNumber(string) * 0.0001).toFixed(15);
            }
        });
})();


(function() {
        var decimal = {
            base: 1000,
            suffixes: ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
        },
        binary = {
            base: 1024,
            suffixes: ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB']
        };

    var allSuffixes =  decimal.suffixes.concat(binary.suffixes.filter(function (item) {
            return decimal.suffixes.indexOf(item) < 0;
        }));
        var unformatRegex = allSuffixes.join('|');
        // Allow support for BPS (http://www.investopedia.com/terms/b/basispoint.asp)
        unformatRegex = '(' + unformatRegex.replace('B', 'B(?!PS)') + ')';

    numeral.register('format', 'bytes', {
        regexps: {
            format: /([0\s]i?b)/,
            unformat: new RegExp(unformatRegex)
        },
        format: function(value, format, roundingFunction) {
            var output,
                bytes = numeral._.includes(format, 'ib') ? binary : decimal,
                suffix = numeral._.includes(format, ' b') || numeral._.includes(format, ' ib') ? ' ' : '',
                power,
                min,
                max;

            // check for space before
            format = format.replace(/\s?i?b/, '');

            for (power = 0; power <= bytes.suffixes.length; power++) {
                min = Math.pow(bytes.base, power);
                max = Math.pow(bytes.base, power + 1);

                if (value === null || value === 0 || value >= min && value < max) {
                    suffix += bytes.suffixes[power];

                    if (min > 0) {
                        value = value / min;
                    }

                    break;
                }
            }

            output = numeral._.numberToFormat(value, format, roundingFunction);

            return output + suffix;
        },
        unformat: function(string) {
            var value = numeral._.stringToNumber(string),
                power,
                bytesMultiplier;

            if (value) {
                for (power = decimal.suffixes.length - 1; power >= 0; power--) {
                    if (numeral._.includes(string, decimal.suffixes[power])) {
                        bytesMultiplier = Math.pow(decimal.base, power);

                        break;
                    }

                    if (numeral._.includes(string, binary.suffixes[power])) {
                        bytesMultiplier = Math.pow(binary.base, power);

                        break;
                    }
                }

                value *= (bytesMultiplier || 1);
            }

            return value;
        }
    });
})();


(function() {
        numeral.register('format', 'currency', {
        regexps: {
            format: /(\$)/
        },
        format: function(value, format, roundingFunction) {
            var locale = numeral.locales[numeral.options.currentLocale],
                symbols = {
                    before: format.match(/^([\+|\-|\(|\s|\$]*)/)[0],
                    after: format.match(/([\+|\-|\)|\s|\$]*)$/)[0]
                },
                output,
                symbol,
                i;

            // strip format of spaces and $
            format = format.replace(/\s?\$\s?/, '');

            // format the number
            output = numeral._.numberToFormat(value, format, roundingFunction);

            // update the before and after based on value
            if (value >= 0) {
                symbols.before = symbols.before.replace(/[\-\(]/, '');
                symbols.after = symbols.after.replace(/[\-\)]/, '');
            } else if (value < 0 && (!numeral._.includes(symbols.before, '-') && !numeral._.includes(symbols.before, '('))) {
                symbols.before = '-' + symbols.before;
            }

            // loop through each before symbol
            for (i = 0; i < symbols.before.length; i++) {
                symbol = symbols.before[i];

                switch (symbol) {
                    case '$':
                        output = numeral._.insert(output, locale.currency.symbol, i);
                        break;
                    case ' ':
                        output = numeral._.insert(output, ' ', i + locale.currency.symbol.length - 1);
                        break;
                }
            }

            // loop through each after symbol
            for (i = symbols.after.length - 1; i >= 0; i--) {
                symbol = symbols.after[i];

                switch (symbol) {
                    case '$':
                        output = i === symbols.after.length - 1 ? output + locale.currency.symbol : numeral._.insert(output, locale.currency.symbol, -(symbols.after.length - (1 + i)));
                        break;
                    case ' ':
                        output = i === symbols.after.length - 1 ? output + ' ' : numeral._.insert(output, ' ', -(symbols.after.length - (1 + i) + locale.currency.symbol.length - 1));
                        break;
                }
            }


            return output;
        }
    });
})();


(function() {
        numeral.register('format', 'exponential', {
        regexps: {
            format: /(e\+|e-)/,
            unformat: /(e\+|e-)/
        },
        format: function(value, format, roundingFunction) {
            var output,
                exponential = typeof value === 'number' && !numeral._.isNaN(value) ? value.toExponential() : '0e+0',
                parts = exponential.split('e');

            format = format.replace(/e[\+|\-]{1}0/, '');

            output = numeral._.numberToFormat(Number(parts[0]), format, roundingFunction);

            return output + 'e' + parts[1];
        },
        unformat: function(string) {
            var parts = numeral._.includes(string, 'e+') ? string.split('e+') : string.split('e-'),
                value = Number(parts[0]),
                power = Number(parts[1]);

            power = numeral._.includes(string, 'e-') ? power *= -1 : power;

            function cback(accum, curr, currI, O) {
                var corrFactor = numeral._.correctionFactor(accum, curr),
                    num = (accum * corrFactor) * (curr * corrFactor) / (corrFactor * corrFactor);
                return num;
            }

            return numeral._.reduce([value, Math.pow(10, power)], cback, 1);
        }
    });
})();


(function() {
        numeral.register('format', 'ordinal', {
        regexps: {
            format: /(o)/
        },
        format: function(value, format, roundingFunction) {
            var locale = numeral.locales[numeral.options.currentLocale],
                output,
                ordinal = numeral._.includes(format, ' o') ? ' ' : '';

            // check for space before
            format = format.replace(/\s?o/, '');

            ordinal += locale.ordinal(value);

            output = numeral._.numberToFormat(value, format, roundingFunction);

            return output + ordinal;
        }
    });
})();


(function() {
        numeral.register('format', 'percentage', {
        regexps: {
            format: /(%)/,
            unformat: /(%)/
        },
        format: function(value, format, roundingFunction) {
            var space = numeral._.includes(format, ' %') ? ' ' : '',
                output;

            if (numeral.options.scalePercentBy100) {
                value = value * 100;
            }

            // check for space before %
            format = format.replace(/\s?\%/, '');

            output = numeral._.numberToFormat(value, format, roundingFunction);

            if (numeral._.includes(output, ')')) {
                output = output.split('');

                output.splice(-1, 0, space + '%');

                output = output.join('');
            } else {
                output = output + space + '%';
            }

            return output;
        },
        unformat: function(string) {
            var number = numeral._.stringToNumber(string);
            if (numeral.options.scalePercentBy100) {
                return number * 0.01;
            }
            return number;
        }
    });
})();


(function() {
        numeral.register('format', 'time', {
        regexps: {
            format: /(:)/,
            unformat: /(:)/
        },
        format: function(value, format, roundingFunction) {
            var hours = Math.floor(value / 60 / 60),
                minutes = Math.floor((value - (hours * 60 * 60)) / 60),
                seconds = Math.round(value - (hours * 60 * 60) - (minutes * 60));

            return hours + ':' + (minutes < 10 ? '0' + minutes : minutes) + ':' + (seconds < 10 ? '0' + seconds : seconds);
        },
        unformat: function(string) {
            var timeArray = string.split(':'),
                seconds = 0;

            // turn hours and minutes into seconds and add them all up
            if (timeArray.length === 3) {
                // hours
                seconds = seconds + (Number(timeArray[0]) * 60 * 60);
                // minutes
                seconds = seconds + (Number(timeArray[1]) * 60);
                // seconds
                seconds = seconds + Number(timeArray[2]);
            } else if (timeArray.length === 2) {
                // minutes
                seconds = seconds + (Number(timeArray[0]) * 60);
                // seconds
                seconds = seconds + Number(timeArray[1]);
            }
            return Number(seconds);
        }
    });
})();

return numeral;
}));


/***/ }),
/* 82 */,
/* 83 */,
/* 84 */
/*!********************************************!*\
  !*** ./node_modules/jquery/dist/jquery.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*!
 * jQuery JavaScript Library v3.3.1
 * https://jquery.com/
 *
 * Includes Sizzle.js
 * https://sizzlejs.com/
 *
 * Copyright JS Foundation and other contributors
 * Released under the MIT license
 * https://jquery.org/license
 *
 * Date: 2018-01-20T17:24Z
 */
( function( global, factory ) {

	"use strict";

	if ( typeof module === "object" && typeof module.exports === "object" ) {

		// For CommonJS and CommonJS-like environments where a proper `window`
		// is present, execute the factory and get jQuery.
		// For environments that do not have a `window` with a `document`
		// (such as Node.js), expose a factory as module.exports.
		// This accentuates the need for the creation of a real `window`.
		// e.g. var jQuery = require("jquery")(window);
		// See ticket #14549 for more info.
		module.exports = global.document ?
			factory( global, true ) :
			function( w ) {
				if ( !w.document ) {
					throw new Error( "jQuery requires a window with a document" );
				}
				return factory( w );
			};
	} else {
		factory( global );
	}

// Pass this if window is not defined yet
} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {

// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
// enough that all such attempts are guarded in a try block.
"use strict";

var arr = [];

var document = window.document;

var getProto = Object.getPrototypeOf;

var slice = arr.slice;

var concat = arr.concat;

var push = arr.push;

var indexOf = arr.indexOf;

var class2type = {};

var toString = class2type.toString;

var hasOwn = class2type.hasOwnProperty;

var fnToString = hasOwn.toString;

var ObjectFunctionString = fnToString.call( Object );

var support = {};

var isFunction = function isFunction( obj ) {

      // Support: Chrome <=57, Firefox <=52
      // In some browsers, typeof returns "function" for HTML <object> elements
      // (i.e., `typeof document.createElement( "object" ) === "function"`).
      // We don't want to classify *any* DOM node as a function.
      return typeof obj === "function" && typeof obj.nodeType !== "number";
  };


var isWindow = function isWindow( obj ) {
		return obj != null && obj === obj.window;
	};




	var preservedScriptAttributes = {
		type: true,
		src: true,
		noModule: true
	};

	function DOMEval( code, doc, node ) {
		doc = doc || document;

		var i,
			script = doc.createElement( "script" );

		script.text = code;
		if ( node ) {
			for ( i in preservedScriptAttributes ) {
				if ( node[ i ] ) {
					script[ i ] = node[ i ];
				}
			}
		}
		doc.head.appendChild( script ).parentNode.removeChild( script );
	}


function toType( obj ) {
	if ( obj == null ) {
		return obj + "";
	}

	// Support: Android <=2.3 only (functionish RegExp)
	return typeof obj === "object" || typeof obj === "function" ?
		class2type[ toString.call( obj ) ] || "object" :
		typeof obj;
}
/* global Symbol */
// Defining this global in .eslintrc.json would create a danger of using the global
// unguarded in another place, it seems safer to define global only for this module



var
	version = "3.3.1",

	// Define a local copy of jQuery
	jQuery = function( selector, context ) {

		// The jQuery object is actually just the init constructor 'enhanced'
		// Need init if jQuery is called (just allow error to be thrown if not included)
		return new jQuery.fn.init( selector, context );
	},

	// Support: Android <=4.0 only
	// Make sure we trim BOM and NBSP
	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;

jQuery.fn = jQuery.prototype = {

	// The current version of jQuery being used
	jquery: version,

	constructor: jQuery,

	// The default length of a jQuery object is 0
	length: 0,

	toArray: function() {
		return slice.call( this );
	},

	// Get the Nth element in the matched element set OR
	// Get the whole matched element set as a clean array
	get: function( num ) {

		// Return all the elements in a clean array
		if ( num == null ) {
			return slice.call( this );
		}

		// Return just the one element from the set
		return num < 0 ? this[ num + this.length ] : this[ num ];
	},

	// Take an array of elements and push it onto the stack
	// (returning the new matched element set)
	pushStack: function( elems ) {

		// Build a new jQuery matched element set
		var ret = jQuery.merge( this.constructor(), elems );

		// Add the old object onto the stack (as a reference)
		ret.prevObject = this;

		// Return the newly-formed element set
		return ret;
	},

	// Execute a callback for every element in the matched set.
	each: function( callback ) {
		return jQuery.each( this, callback );
	},

	map: function( callback ) {
		return this.pushStack( jQuery.map( this, function( elem, i ) {
			return callback.call( elem, i, elem );
		} ) );
	},

	slice: function() {
		return this.pushStack( slice.apply( this, arguments ) );
	},

	first: function() {
		return this.eq( 0 );
	},

	last: function() {
		return this.eq( -1 );
	},

	eq: function( i ) {
		var len = this.length,
			j = +i + ( i < 0 ? len : 0 );
		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
	},

	end: function() {
		return this.prevObject || this.constructor();
	},

	// For internal use only.
	// Behaves like an Array's method, not like a jQuery method.
	push: push,
	sort: arr.sort,
	splice: arr.splice
};

jQuery.extend = jQuery.fn.extend = function() {
	var options, name, src, copy, copyIsArray, clone,
		target = arguments[ 0 ] || {},
		i = 1,
		length = arguments.length,
		deep = false;

	// Handle a deep copy situation
	if ( typeof target === "boolean" ) {
		deep = target;

		// Skip the boolean and the target
		target = arguments[ i ] || {};
		i++;
	}

	// Handle case when target is a string or something (possible in deep copy)
	if ( typeof target !== "object" && !isFunction( target ) ) {
		target = {};
	}

	// Extend jQuery itself if only one argument is passed
	if ( i === length ) {
		target = this;
		i--;
	}

	for ( ; i < length; i++ ) {

		// Only deal with non-null/undefined values
		if ( ( options = arguments[ i ] ) != null ) {

			// Extend the base object
			for ( name in options ) {
				src = target[ name ];
				copy = options[ name ];

				// Prevent never-ending loop
				if ( target === copy ) {
					continue;
				}

				// Recurse if we're merging plain objects or arrays
				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
					( copyIsArray = Array.isArray( copy ) ) ) ) {

					if ( copyIsArray ) {
						copyIsArray = false;
						clone = src && Array.isArray( src ) ? src : [];

					} else {
						clone = src && jQuery.isPlainObject( src ) ? src : {};
					}

					// Never move original objects, clone them
					target[ name ] = jQuery.extend( deep, clone, copy );

				// Don't bring in undefined values
				} else if ( copy !== undefined ) {
					target[ name ] = copy;
				}
			}
		}
	}

	// Return the modified object
	return target;
};

jQuery.extend( {

	// Unique for each copy of jQuery on the page
	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

	// Assume jQuery is ready without the ready module
	isReady: true,

	error: function( msg ) {
		throw new Error( msg );
	},

	noop: function() {},

	isPlainObject: function( obj ) {
		var proto, Ctor;

		// Detect obvious negatives
		// Use toString instead of jQuery.type to catch host objects
		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
			return false;
		}

		proto = getProto( obj );

		// Objects with no prototype (e.g., `Object.create( null )`) are plain
		if ( !proto ) {
			return true;
		}

		// Objects with prototype are plain iff they were constructed by a global Object function
		Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
		return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
	},

	isEmptyObject: function( obj ) {

		/* eslint-disable no-unused-vars */
		// See https://github.com/eslint/eslint/issues/6125
		var name;

		for ( name in obj ) {
			return false;
		}
		return true;
	},

	// Evaluates a script in a global context
	globalEval: function( code ) {
		DOMEval( code );
	},

	each: function( obj, callback ) {
		var length, i = 0;

		if ( isArrayLike( obj ) ) {
			length = obj.length;
			for ( ; i < length; i++ ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		} else {
			for ( i in obj ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		}

		return obj;
	},

	// Support: Android <=4.0 only
	trim: function( text ) {
		return text == null ?
			"" :
			( text + "" ).replace( rtrim, "" );
	},

	// results is for internal usage only
	makeArray: function( arr, results ) {
		var ret = results || [];

		if ( arr != null ) {
			if ( isArrayLike( Object( arr ) ) ) {
				jQuery.merge( ret,
					typeof arr === "string" ?
					[ arr ] : arr
				);
			} else {
				push.call( ret, arr );
			}
		}

		return ret;
	},

	inArray: function( elem, arr, i ) {
		return arr == null ? -1 : indexOf.call( arr, elem, i );
	},

	// Support: Android <=4.0 only, PhantomJS 1 only
	// push.apply(_, arraylike) throws on ancient WebKit
	merge: function( first, second ) {
		var len = +second.length,
			j = 0,
			i = first.length;

		for ( ; j < len; j++ ) {
			first[ i++ ] = second[ j ];
		}

		first.length = i;

		return first;
	},

	grep: function( elems, callback, invert ) {
		var callbackInverse,
			matches = [],
			i = 0,
			length = elems.length,
			callbackExpect = !invert;

		// Go through the array, only saving the items
		// that pass the validator function
		for ( ; i < length; i++ ) {
			callbackInverse = !callback( elems[ i ], i );
			if ( callbackInverse !== callbackExpect ) {
				matches.push( elems[ i ] );
			}
		}

		return matches;
	},

	// arg is for internal usage only
	map: function( elems, callback, arg ) {
		var length, value,
			i = 0,
			ret = [];

		// Go through the array, translating each of the items to their new values
		if ( isArrayLike( elems ) ) {
			length = elems.length;
			for ( ; i < length; i++ ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}

		// Go through every key on the object,
		} else {
			for ( i in elems ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}
		}

		// Flatten any nested arrays
		return concat.apply( [], ret );
	},

	// A global GUID counter for objects
	guid: 1,

	// jQuery.support is not used in Core but other projects attach their
	// properties to it so it needs to exist.
	support: support
} );

if ( typeof Symbol === "function" ) {
	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
}

// Populate the class2type map
jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
function( i, name ) {
	class2type[ "[object " + name + "]" ] = name.toLowerCase();
} );

function isArrayLike( obj ) {

	// Support: real iOS 8.2 only (not reproducible in simulator)
	// `in` check used to prevent JIT error (gh-2145)
	// hasOwn isn't used here due to false negatives
	// regarding Nodelist length in IE
	var length = !!obj && "length" in obj && obj.length,
		type = toType( obj );

	if ( isFunction( obj ) || isWindow( obj ) ) {
		return false;
	}

	return type === "array" || length === 0 ||
		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
}
var Sizzle =
/*!
 * Sizzle CSS Selector Engine v2.3.3
 * https://sizzlejs.com/
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2016-08-08
 */
(function( window ) {

var i,
	support,
	Expr,
	getText,
	isXML,
	tokenize,
	compile,
	select,
	outermostContext,
	sortInput,
	hasDuplicate,

	// Local document vars
	setDocument,
	document,
	docElem,
	documentIsHTML,
	rbuggyQSA,
	rbuggyMatches,
	matches,
	contains,

	// Instance-specific data
	expando = "sizzle" + 1 * new Date(),
	preferredDoc = window.document,
	dirruns = 0,
	done = 0,
	classCache = createCache(),
	tokenCache = createCache(),
	compilerCache = createCache(),
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
		}
		return 0;
	},

	// Instance methods
	hasOwn = ({}).hasOwnProperty,
	arr = [],
	pop = arr.pop,
	push_native = arr.push,
	push = arr.push,
	slice = arr.slice,
	// Use a stripped-down indexOf as it's faster than native
	// https://jsperf.com/thor-indexof-vs-for/5
	indexOf = function( list, elem ) {
		var i = 0,
			len = list.length;
		for ( ; i < len; i++ ) {
			if ( list[i] === elem ) {
				return i;
			}
		}
		return -1;
	},

	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",

	// Regular expressions

	// http://www.w3.org/TR/css3-selectors/#whitespace
	whitespace = "[\\x20\\t\\r\\n\\f]",

	// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
	identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",

	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
		// Operator (capture 2)
		"*([*^$|!~]?=)" + whitespace +
		// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
		"*\\]",

	pseudos = ":(" + identifier + ")(?:\\((" +
		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
		// 1. quoted (capture 3; capture 4 or capture 5)
		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
		// 2. simple (capture 6)
		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
		// 3. anything else (capture 2)
		".*" +
		")\\)|)",

	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
	rwhitespace = new RegExp( whitespace + "+", "g" ),
	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),

	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),

	rpseudo = new RegExp( pseudos ),
	ridentifier = new RegExp( "^" + identifier + "$" ),

	matchExpr = {
		"ID": new RegExp( "^#(" + identifier + ")" ),
		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
		"ATTR": new RegExp( "^" + attributes ),
		"PSEUDO": new RegExp( "^" + pseudos ),
		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
		// For use in libraries implementing .is()
		// We use this for POS matching in `select`
		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
	},

	rinputs = /^(?:input|select|textarea|button)$/i,
	rheader = /^h\d$/i,

	rnative = /^[^{]+\{\s*\[native \w/,

	// Easily-parseable/retrievable ID or TAG or CLASS selectors
	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,

	rsibling = /[+~]/,

	// CSS escapes
	// http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
	funescape = function( _, escaped, escapedWhitespace ) {
		var high = "0x" + escaped - 0x10000;
		// NaN means non-codepoint
		// Support: Firefox<24
		// Workaround erroneous numeric interpretation of +"0x"
		return high !== high || escapedWhitespace ?
			escaped :
			high < 0 ?
				// BMP codepoint
				String.fromCharCode( high + 0x10000 ) :
				// Supplemental Plane codepoint (surrogate pair)
				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
	},

	// CSS string/identifier serialization
	// https://drafts.csswg.org/cssom/#common-serializing-idioms
	rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
	fcssescape = function( ch, asCodePoint ) {
		if ( asCodePoint ) {

			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
			if ( ch === "\0" ) {
				return "\uFFFD";
			}

			// Control characters and (dependent upon position) numbers get escaped as code points
			return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
		}

		// Other potentially-special ASCII characters get backslash-escaped
		return "\\" + ch;
	},

	// Used for iframes
	// See setDocument()
	// Removing the function wrapper causes a "Permission Denied"
	// error in IE
	unloadHandler = function() {
		setDocument();
	},

	disabledAncestor = addCombinator(
		function( elem ) {
			return elem.disabled === true && ("form" in elem || "label" in elem);
		},
		{ dir: "parentNode", next: "legend" }
	);

// Optimize for push.apply( _, NodeList )
try {
	push.apply(
		(arr = slice.call( preferredDoc.childNodes )),
		preferredDoc.childNodes
	);
	// Support: Android<4.0
	// Detect silently failing push.apply
	arr[ preferredDoc.childNodes.length ].nodeType;
} catch ( e ) {
	push = { apply: arr.length ?

		// Leverage slice if possible
		function( target, els ) {
			push_native.apply( target, slice.call(els) );
		} :

		// Support: IE<9
		// Otherwise append directly
		function( target, els ) {
			var j = target.length,
				i = 0;
			// Can't trust NodeList.length
			while ( (target[j++] = els[i++]) ) {}
			target.length = j - 1;
		}
	};
}

function Sizzle( selector, context, results, seed ) {
	var m, i, elem, nid, match, groups, newSelector,
		newContext = context && context.ownerDocument,

		// nodeType defaults to 9, since context defaults to document
		nodeType = context ? context.nodeType : 9;

	results = results || [];

	// Return early from calls with invalid selector or context
	if ( typeof selector !== "string" || !selector ||
		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {

		return results;
	}

	// Try to shortcut find operations (as opposed to filters) in HTML documents
	if ( !seed ) {

		if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
			setDocument( context );
		}
		context = context || document;

		if ( documentIsHTML ) {

			// If the selector is sufficiently simple, try using a "get*By*" DOM method
			// (excepting DocumentFragment context, where the methods don't exist)
			if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {

				// ID selector
				if ( (m = match[1]) ) {

					// Document context
					if ( nodeType === 9 ) {
						if ( (elem = context.getElementById( m )) ) {

							// Support: IE, Opera, Webkit
							// TODO: identify versions
							// getElementById can match elements by name instead of ID
							if ( elem.id === m ) {
								results.push( elem );
								return results;
							}
						} else {
							return results;
						}

					// Element context
					} else {

						// Support: IE, Opera, Webkit
						// TODO: identify versions
						// getElementById can match elements by name instead of ID
						if ( newContext && (elem = newContext.getElementById( m )) &&
							contains( context, elem ) &&
							elem.id === m ) {

							results.push( elem );
							return results;
						}
					}

				// Type selector
				} else if ( match[2] ) {
					push.apply( results, context.getElementsByTagName( selector ) );
					return results;

				// Class selector
				} else if ( (m = match[3]) && support.getElementsByClassName &&
					context.getElementsByClassName ) {

					push.apply( results, context.getElementsByClassName( m ) );
					return results;
				}
			}

			// Take advantage of querySelectorAll
			if ( support.qsa &&
				!compilerCache[ selector + " " ] &&
				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {

				if ( nodeType !== 1 ) {
					newContext = context;
					newSelector = selector;

				// qSA looks outside Element context, which is not what we want
				// Thanks to Andrew Dupont for this workaround technique
				// Support: IE <=8
				// Exclude object elements
				} else if ( context.nodeName.toLowerCase() !== "object" ) {

					// Capture the context ID, setting it first if necessary
					if ( (nid = context.getAttribute( "id" )) ) {
						nid = nid.replace( rcssescape, fcssescape );
					} else {
						context.setAttribute( "id", (nid = expando) );
					}

					// Prefix every selector in the list
					groups = tokenize( selector );
					i = groups.length;
					while ( i-- ) {
						groups[i] = "#" + nid + " " + toSelector( groups[i] );
					}
					newSelector = groups.join( "," );

					// Expand context for sibling selectors
					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
						context;
				}

				if ( newSelector ) {
					try {
						push.apply( results,
							newContext.querySelectorAll( newSelector )
						);
						return results;
					} catch ( qsaError ) {
					} finally {
						if ( nid === expando ) {
							context.removeAttribute( "id" );
						}
					}
				}
			}
		}
	}

	// All others
	return select( selector.replace( rtrim, "$1" ), context, results, seed );
}

/**
 * Create key-value caches of limited size
 * @returns {function(string, object)} Returns the Object data after storing it on itself with
 *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
 *	deleting the oldest entry
 */
function createCache() {
	var keys = [];

	function cache( key, value ) {
		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
		if ( keys.push( key + " " ) > Expr.cacheLength ) {
			// Only keep the most recent entries
			delete cache[ keys.shift() ];
		}
		return (cache[ key + " " ] = value);
	}
	return cache;
}

/**
 * Mark a function for special use by Sizzle
 * @param {Function} fn The function to mark
 */
function markFunction( fn ) {
	fn[ expando ] = true;
	return fn;
}

/**
 * Support testing using an element
 * @param {Function} fn Passed the created element and returns a boolean result
 */
function assert( fn ) {
	var el = document.createElement("fieldset");

	try {
		return !!fn( el );
	} catch (e) {
		return false;
	} finally {
		// Remove from its parent by default
		if ( el.parentNode ) {
			el.parentNode.removeChild( el );
		}
		// release memory in IE
		el = null;
	}
}

/**
 * Adds the same handler for all of the specified attrs
 * @param {String} attrs Pipe-separated list of attributes
 * @param {Function} handler The method that will be applied
 */
function addHandle( attrs, handler ) {
	var arr = attrs.split("|"),
		i = arr.length;

	while ( i-- ) {
		Expr.attrHandle[ arr[i] ] = handler;
	}
}

/**
 * Checks document order of two siblings
 * @param {Element} a
 * @param {Element} b
 * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
 */
function siblingCheck( a, b ) {
	var cur = b && a,
		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
			a.sourceIndex - b.sourceIndex;

	// Use IE sourceIndex if available on both nodes
	if ( diff ) {
		return diff;
	}

	// Check if b follows a
	if ( cur ) {
		while ( (cur = cur.nextSibling) ) {
			if ( cur === b ) {
				return -1;
			}
		}
	}

	return a ? 1 : -1;
}

/**
 * Returns a function to use in pseudos for input types
 * @param {String} type
 */
function createInputPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return name === "input" && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for buttons
 * @param {String} type
 */
function createButtonPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return (name === "input" || name === "button") && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for :enabled/:disabled
 * @param {Boolean} disabled true for :disabled; false for :enabled
 */
function createDisabledPseudo( disabled ) {

	// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
	return function( elem ) {

		// Only certain elements can match :enabled or :disabled
		// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
		// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
		if ( "form" in elem ) {

			// Check for inherited disabledness on relevant non-disabled elements:
			// * listed form-associated elements in a disabled fieldset
			//   https://html.spec.whatwg.org/multipage/forms.html#category-listed
			//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
			// * option elements in a disabled optgroup
			//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
			// All such elements have a "form" property.
			if ( elem.parentNode && elem.disabled === false ) {

				// Option elements defer to a parent optgroup if present
				if ( "label" in elem ) {
					if ( "label" in elem.parentNode ) {
						return elem.parentNode.disabled === disabled;
					} else {
						return elem.disabled === disabled;
					}
				}

				// Support: IE 6 - 11
				// Use the isDisabled shortcut property to check for disabled fieldset ancestors
				return elem.isDisabled === disabled ||

					// Where there is no isDisabled, check manually
					/* jshint -W018 */
					elem.isDisabled !== !disabled &&
						disabledAncestor( elem ) === disabled;
			}

			return elem.disabled === disabled;

		// Try to winnow out elements that can't be disabled before trusting the disabled property.
		// Some victims get caught in our net (label, legend, menu, track), but it shouldn't
		// even exist on them, let alone have a boolean value.
		} else if ( "label" in elem ) {
			return elem.disabled === disabled;
		}

		// Remaining elements are neither :enabled nor :disabled
		return false;
	};
}

/**
 * Returns a function to use in pseudos for positionals
 * @param {Function} fn
 */
function createPositionalPseudo( fn ) {
	return markFunction(function( argument ) {
		argument = +argument;
		return markFunction(function( seed, matches ) {
			var j,
				matchIndexes = fn( [], seed.length, argument ),
				i = matchIndexes.length;

			// Match elements found at the specified indexes
			while ( i-- ) {
				if ( seed[ (j = matchIndexes[i]) ] ) {
					seed[j] = !(matches[j] = seed[j]);
				}
			}
		});
	});
}

/**
 * Checks a node for validity as a Sizzle context
 * @param {Element|Object=} context
 * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
 */
function testContext( context ) {
	return context && typeof context.getElementsByTagName !== "undefined" && context;
}

// Expose support vars for convenience
support = Sizzle.support = {};

/**
 * Detects XML nodes
 * @param {Element|Object} elem An element or a document
 * @returns {Boolean} True iff elem is a non-HTML XML node
 */
isXML = Sizzle.isXML = function( elem ) {
	// documentElement is verified for cases where it doesn't yet exist
	// (such as loading iframes in IE - #4833)
	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

/**
 * Sets document-related variables once based on the current document
 * @param {Element|Object} [doc] An element or document object to use to set the document
 * @returns {Object} Returns the current document
 */
setDocument = Sizzle.setDocument = function( node ) {
	var hasCompare, subWindow,
		doc = node ? node.ownerDocument || node : preferredDoc;

	// Return early if doc is invalid or already selected
	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
		return document;
	}

	// Update global variables
	document = doc;
	docElem = document.documentElement;
	documentIsHTML = !isXML( document );

	// Support: IE 9-11, Edge
	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
	if ( preferredDoc !== document &&
		(subWindow = document.defaultView) && subWindow.top !== subWindow ) {

		// Support: IE 11, Edge
		if ( subWindow.addEventListener ) {
			subWindow.addEventListener( "unload", unloadHandler, false );

		// Support: IE 9 - 10 only
		} else if ( subWindow.attachEvent ) {
			subWindow.attachEvent( "onunload", unloadHandler );
		}
	}

	/* Attributes
	---------------------------------------------------------------------- */

	// Support: IE<8
	// Verify that getAttribute really returns attributes and not properties
	// (excepting IE8 booleans)
	support.attributes = assert(function( el ) {
		el.className = "i";
		return !el.getAttribute("className");
	});

	/* getElement(s)By*
	---------------------------------------------------------------------- */

	// Check if getElementsByTagName("*") returns only elements
	support.getElementsByTagName = assert(function( el ) {
		el.appendChild( document.createComment("") );
		return !el.getElementsByTagName("*").length;
	});

	// Support: IE<9
	support.getElementsByClassName = rnative.test( document.getElementsByClassName );

	// Support: IE<10
	// Check if getElementById returns elements by name
	// The broken getElementById methods don't pick up programmatically-set names,
	// so use a roundabout getElementsByName test
	support.getById = assert(function( el ) {
		docElem.appendChild( el ).id = expando;
		return !document.getElementsByName || !document.getElementsByName( expando ).length;
	});

	// ID filter and find
	if ( support.getById ) {
		Expr.filter["ID"] = function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				return elem.getAttribute("id") === attrId;
			};
		};
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
				var elem = context.getElementById( id );
				return elem ? [ elem ] : [];
			}
		};
	} else {
		Expr.filter["ID"] =  function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				var node = typeof elem.getAttributeNode !== "undefined" &&
					elem.getAttributeNode("id");
				return node && node.value === attrId;
			};
		};

		// Support: IE 6 - 7 only
		// getElementById is not reliable as a find shortcut
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
				var node, i, elems,
					elem = context.getElementById( id );

				if ( elem ) {

					// Verify the id attribute
					node = elem.getAttributeNode("id");
					if ( node && node.value === id ) {
						return [ elem ];
					}

					// Fall back on getElementsByName
					elems = context.getElementsByName( id );
					i = 0;
					while ( (elem = elems[i++]) ) {
						node = elem.getAttributeNode("id");
						if ( node && node.value === id ) {
							return [ elem ];
						}
					}
				}

				return [];
			}
		};
	}

	// Tag
	Expr.find["TAG"] = support.getElementsByTagName ?
		function( tag, context ) {
			if ( typeof context.getElementsByTagName !== "undefined" ) {
				return context.getElementsByTagName( tag );

			// DocumentFragment nodes don't have gEBTN
			} else if ( support.qsa ) {
				return context.querySelectorAll( tag );
			}
		} :

		function( tag, context ) {
			var elem,
				tmp = [],
				i = 0,
				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
				results = context.getElementsByTagName( tag );

			// Filter out possible comments
			if ( tag === "*" ) {
				while ( (elem = results[i++]) ) {
					if ( elem.nodeType === 1 ) {
						tmp.push( elem );
					}
				}

				return tmp;
			}
			return results;
		};

	// Class
	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
			return context.getElementsByClassName( className );
		}
	};

	/* QSA/matchesSelector
	---------------------------------------------------------------------- */

	// QSA and matchesSelector support

	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
	rbuggyMatches = [];

	// qSa(:focus) reports false when true (Chrome 21)
	// We allow this because of a bug in IE8/9 that throws an error
	// whenever `document.activeElement` is accessed on an iframe
	// So, we allow :focus to pass through QSA all the time to avoid the IE error
	// See https://bugs.jquery.com/ticket/13378
	rbuggyQSA = [];

	if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
		// Build QSA regex
		// Regex strategy adopted from Diego Perini
		assert(function( el ) {
			// Select is set to empty string on purpose
			// This is to test IE's treatment of not explicitly
			// setting a boolean content attribute,
			// since its presence should be enough
			// https://bugs.jquery.com/ticket/12359
			docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
				"<option selected=''></option></select>";

			// Support: IE8, Opera 11-12.16
			// Nothing should be selected when empty strings follow ^= or $= or *=
			// The test attribute must be unknown in Opera but "safe" for WinRT
			// https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
			if ( el.querySelectorAll("[msallowcapture^='']").length ) {
				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
			}

			// Support: IE8
			// Boolean attributes and "value" are not treated correctly
			if ( !el.querySelectorAll("[selected]").length ) {
				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
			}

			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
			if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
				rbuggyQSA.push("~=");
			}

			// Webkit/Opera - :checked should return selected option elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			// IE8 throws error here and will not see later tests
			if ( !el.querySelectorAll(":checked").length ) {
				rbuggyQSA.push(":checked");
			}

			// Support: Safari 8+, iOS 8+
			// https://bugs.webkit.org/show_bug.cgi?id=136851
			// In-page `selector#id sibling-combinator selector` fails
			if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
				rbuggyQSA.push(".#.+[+~]");
			}
		});

		assert(function( el ) {
			el.innerHTML = "<a href='' disabled='disabled'></a>" +
				"<select disabled='disabled'><option/></select>";

			// Support: Windows 8 Native Apps
			// The type and name attributes are restricted during .innerHTML assignment
			var input = document.createElement("input");
			input.setAttribute( "type", "hidden" );
			el.appendChild( input ).setAttribute( "name", "D" );

			// Support: IE8
			// Enforce case-sensitivity of name attribute
			if ( el.querySelectorAll("[name=d]").length ) {
				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
			}

			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
			// IE8 throws error here and will not see later tests
			if ( el.querySelectorAll(":enabled").length !== 2 ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Support: IE9-11+
			// IE's :disabled selector does not pick up the children of disabled fieldsets
			docElem.appendChild( el ).disabled = true;
			if ( el.querySelectorAll(":disabled").length !== 2 ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Opera 10-11 does not throw on post-comma invalid pseudos
			el.querySelectorAll("*,:x");
			rbuggyQSA.push(",.*:");
		});
	}

	if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
		docElem.webkitMatchesSelector ||
		docElem.mozMatchesSelector ||
		docElem.oMatchesSelector ||
		docElem.msMatchesSelector) )) ) {

		assert(function( el ) {
			// Check to see if it's possible to do matchesSelector
			// on a disconnected node (IE 9)
			support.disconnectedMatch = matches.call( el, "*" );

			// This should fail with an exception
			// Gecko does not error, returns false instead
			matches.call( el, "[s!='']:x" );
			rbuggyMatches.push( "!=", pseudos );
		});
	}

	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );

	/* Contains
	---------------------------------------------------------------------- */
	hasCompare = rnative.test( docElem.compareDocumentPosition );

	// Element contains another
	// Purposefully self-exclusive
	// As in, an element does not contain itself
	contains = hasCompare || rnative.test( docElem.contains ) ?
		function( a, b ) {
			var adown = a.nodeType === 9 ? a.documentElement : a,
				bup = b && b.parentNode;
			return a === bup || !!( bup && bup.nodeType === 1 && (
				adown.contains ?
					adown.contains( bup ) :
					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
			));
		} :
		function( a, b ) {
			if ( b ) {
				while ( (b = b.parentNode) ) {
					if ( b === a ) {
						return true;
					}
				}
			}
			return false;
		};

	/* Sorting
	---------------------------------------------------------------------- */

	// Document order sorting
	sortOrder = hasCompare ?
	function( a, b ) {

		// Flag for duplicate removal
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		// Sort on method existence if only one input has compareDocumentPosition
		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
		if ( compare ) {
			return compare;
		}

		// Calculate position if both inputs belong to the same document
		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
			a.compareDocumentPosition( b ) :

			// Otherwise we know they are disconnected
			1;

		// Disconnected nodes
		if ( compare & 1 ||
			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {

			// Choose the first element that is related to our preferred document
			if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
				return -1;
			}
			if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
				return 1;
			}

			// Maintain original order
			return sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;
		}

		return compare & 4 ? -1 : 1;
	} :
	function( a, b ) {
		// Exit early if the nodes are identical
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		var cur,
			i = 0,
			aup = a.parentNode,
			bup = b.parentNode,
			ap = [ a ],
			bp = [ b ];

		// Parentless nodes are either documents or disconnected
		if ( !aup || !bup ) {
			return a === document ? -1 :
				b === document ? 1 :
				aup ? -1 :
				bup ? 1 :
				sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;

		// If the nodes are siblings, we can do a quick check
		} else if ( aup === bup ) {
			return siblingCheck( a, b );
		}

		// Otherwise we need full lists of their ancestors for comparison
		cur = a;
		while ( (cur = cur.parentNode) ) {
			ap.unshift( cur );
		}
		cur = b;
		while ( (cur = cur.parentNode) ) {
			bp.unshift( cur );
		}

		// Walk down the tree looking for a discrepancy
		while ( ap[i] === bp[i] ) {
			i++;
		}

		return i ?
			// Do a sibling check if the nodes have a common ancestor
			siblingCheck( ap[i], bp[i] ) :

			// Otherwise nodes in our document sort first
			ap[i] === preferredDoc ? -1 :
			bp[i] === preferredDoc ? 1 :
			0;
	};

	return document;
};

Sizzle.matches = function( expr, elements ) {
	return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	// Make sure that attribute selectors are quoted
	expr = expr.replace( rattributeQuotes, "='$1']" );

	if ( support.matchesSelector && documentIsHTML &&
		!compilerCache[ expr + " " ] &&
		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {

		try {
			var ret = matches.call( elem, expr );

			// IE 9's matchesSelector returns false on disconnected nodes
			if ( ret || support.disconnectedMatch ||
					// As well, disconnected nodes are said to be in a document
					// fragment in IE 9
					elem.document && elem.document.nodeType !== 11 ) {
				return ret;
			}
		} catch (e) {}
	}

	return Sizzle( expr, document, null, [ elem ] ).length > 0;
};

Sizzle.contains = function( context, elem ) {
	// Set document vars if needed
	if ( ( context.ownerDocument || context ) !== document ) {
		setDocument( context );
	}
	return contains( context, elem );
};

Sizzle.attr = function( elem, name ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	var fn = Expr.attrHandle[ name.toLowerCase() ],
		// Don't get fooled by Object.prototype properties (jQuery #13807)
		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
			fn( elem, name, !documentIsHTML ) :
			undefined;

	return val !== undefined ?
		val :
		support.attributes || !documentIsHTML ?
			elem.getAttribute( name ) :
			(val = elem.getAttributeNode(name)) && val.specified ?
				val.value :
				null;
};

Sizzle.escape = function( sel ) {
	return (sel + "").replace( rcssescape, fcssescape );
};

Sizzle.error = function( msg ) {
	throw new Error( "Syntax error, unrecognized expression: " + msg );
};

/**
 * Document sorting and removing duplicates
 * @param {ArrayLike} results
 */
Sizzle.uniqueSort = function( results ) {
	var elem,
		duplicates = [],
		j = 0,
		i = 0;

	// Unless we *know* we can detect duplicates, assume their presence
	hasDuplicate = !support.detectDuplicates;
	sortInput = !support.sortStable && results.slice( 0 );
	results.sort( sortOrder );

	if ( hasDuplicate ) {
		while ( (elem = results[i++]) ) {
			if ( elem === results[ i ] ) {
				j = duplicates.push( i );
			}
		}
		while ( j-- ) {
			results.splice( duplicates[ j ], 1 );
		}
	}

	// Clear input after sorting to release objects
	// See https://github.com/jquery/sizzle/pull/225
	sortInput = null;

	return results;
};

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
	var node,
		ret = "",
		i = 0,
		nodeType = elem.nodeType;

	if ( !nodeType ) {
		// If no nodeType, this is expected to be an array
		while ( (node = elem[i++]) ) {
			// Do not traverse comment nodes
			ret += getText( node );
		}
	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
		// Use textContent for elements
		// innerText usage removed for consistency of new lines (jQuery #11153)
		if ( typeof elem.textContent === "string" ) {
			return elem.textContent;
		} else {
			// Traverse its children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				ret += getText( elem );
			}
		}
	} else if ( nodeType === 3 || nodeType === 4 ) {
		return elem.nodeValue;
	}
	// Do not include comment or processing instruction nodes

	return ret;
};

Expr = Sizzle.selectors = {

	// Can be adjusted by the user
	cacheLength: 50,

	createPseudo: markFunction,

	match: matchExpr,

	attrHandle: {},

	find: {},

	relative: {
		">": { dir: "parentNode", first: true },
		" ": { dir: "parentNode" },
		"+": { dir: "previousSibling", first: true },
		"~": { dir: "previousSibling" }
	},

	preFilter: {
		"ATTR": function( match ) {
			match[1] = match[1].replace( runescape, funescape );

			// Move the given value to match[3] whether quoted or unquoted
			match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );

			if ( match[2] === "~=" ) {
				match[3] = " " + match[3] + " ";
			}

			return match.slice( 0, 4 );
		},

		"CHILD": function( match ) {
			/* matches from matchExpr["CHILD"]
				1 type (only|nth|...)
				2 what (child|of-type)
				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
				4 xn-component of xn+y argument ([+-]?\d*n|)
				5 sign of xn-component
				6 x of xn-component
				7 sign of y-component
				8 y of y-component
			*/
			match[1] = match[1].toLowerCase();

			if ( match[1].slice( 0, 3 ) === "nth" ) {
				// nth-* requires argument
				if ( !match[3] ) {
					Sizzle.error( match[0] );
				}

				// numeric x and y parameters for Expr.filter.CHILD
				// remember that false/true cast respectively to 0/1
				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );

			// other types prohibit arguments
			} else if ( match[3] ) {
				Sizzle.error( match[0] );
			}

			return match;
		},

		"PSEUDO": function( match ) {
			var excess,
				unquoted = !match[6] && match[2];

			if ( matchExpr["CHILD"].test( match[0] ) ) {
				return null;
			}

			// Accept quoted arguments as-is
			if ( match[3] ) {
				match[2] = match[4] || match[5] || "";

			// Strip excess characters from unquoted arguments
			} else if ( unquoted && rpseudo.test( unquoted ) &&
				// Get excess from tokenize (recursively)
				(excess = tokenize( unquoted, true )) &&
				// advance to the next closing parenthesis
				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

				// excess is a negative index
				match[0] = match[0].slice( 0, excess );
				match[2] = unquoted.slice( 0, excess );
			}

			// Return only captures needed by the pseudo filter method (type and argument)
			return match.slice( 0, 3 );
		}
	},

	filter: {

		"TAG": function( nodeNameSelector ) {
			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
			return nodeNameSelector === "*" ?
				function() { return true; } :
				function( elem ) {
					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
				};
		},

		"CLASS": function( className ) {
			var pattern = classCache[ className + " " ];

			return pattern ||
				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
				classCache( className, function( elem ) {
					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
				});
		},

		"ATTR": function( name, operator, check ) {
			return function( elem ) {
				var result = Sizzle.attr( elem, name );

				if ( result == null ) {
					return operator === "!=";
				}
				if ( !operator ) {
					return true;
				}

				result += "";

				return operator === "=" ? result === check :
					operator === "!=" ? result !== check :
					operator === "^=" ? check && result.indexOf( check ) === 0 :
					operator === "*=" ? check && result.indexOf( check ) > -1 :
					operator === "$=" ? check && result.slice( -check.length ) === check :
					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
					false;
			};
		},

		"CHILD": function( type, what, argument, first, last ) {
			var simple = type.slice( 0, 3 ) !== "nth",
				forward = type.slice( -4 ) !== "last",
				ofType = what === "of-type";

			return first === 1 && last === 0 ?

				// Shortcut for :nth-*(n)
				function( elem ) {
					return !!elem.parentNode;
				} :

				function( elem, context, xml ) {
					var cache, uniqueCache, outerCache, node, nodeIndex, start,
						dir = simple !== forward ? "nextSibling" : "previousSibling",
						parent = elem.parentNode,
						name = ofType && elem.nodeName.toLowerCase(),
						useCache = !xml && !ofType,
						diff = false;

					if ( parent ) {

						// :(first|last|only)-(child|of-type)
						if ( simple ) {
							while ( dir ) {
								node = elem;
								while ( (node = node[ dir ]) ) {
									if ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) {

										return false;
									}
								}
								// Reverse direction for :only-* (if we haven't yet done so)
								start = dir = type === "only" && !start && "nextSibling";
							}
							return true;
						}

						start = [ forward ? parent.firstChild : parent.lastChild ];

						// non-xml :nth-child(...) stores cache data on `parent`
						if ( forward && useCache ) {

							// Seek `elem` from a previously-cached index

							// ...in a gzip-friendly way
							node = parent;
							outerCache = node[ expando ] || (node[ expando ] = {});

							// Support: IE <9 only
							// Defend against cloned attroperties (jQuery gh-1709)
							uniqueCache = outerCache[ node.uniqueID ] ||
								(outerCache[ node.uniqueID ] = {});

							cache = uniqueCache[ type ] || [];
							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
							diff = nodeIndex && cache[ 2 ];
							node = nodeIndex && parent.childNodes[ nodeIndex ];

							while ( (node = ++nodeIndex && node && node[ dir ] ||

								// Fallback to seeking `elem` from the start
								(diff = nodeIndex = 0) || start.pop()) ) {

								// When found, cache indexes on `parent` and break
								if ( node.nodeType === 1 && ++diff && node === elem ) {
									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
									break;
								}
							}

						} else {
							// Use previously-cached element index if available
							if ( useCache ) {
								// ...in a gzip-friendly way
								node = elem;
								outerCache = node[ expando ] || (node[ expando ] = {});

								// Support: IE <9 only
								// Defend against cloned attroperties (jQuery gh-1709)
								uniqueCache = outerCache[ node.uniqueID ] ||
									(outerCache[ node.uniqueID ] = {});

								cache = uniqueCache[ type ] || [];
								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
								diff = nodeIndex;
							}

							// xml :nth-child(...)
							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
							if ( diff === false ) {
								// Use the same loop as above to seek `elem` from the start
								while ( (node = ++nodeIndex && node && node[ dir ] ||
									(diff = nodeIndex = 0) || start.pop()) ) {

									if ( ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) &&
										++diff ) {

										// Cache the index of each encountered element
										if ( useCache ) {
											outerCache = node[ expando ] || (node[ expando ] = {});

											// Support: IE <9 only
											// Defend against cloned attroperties (jQuery gh-1709)
											uniqueCache = outerCache[ node.uniqueID ] ||
												(outerCache[ node.uniqueID ] = {});

											uniqueCache[ type ] = [ dirruns, diff ];
										}

										if ( node === elem ) {
											break;
										}
									}
								}
							}
						}

						// Incorporate the offset, then check against cycle size
						diff -= last;
						return diff === first || ( diff % first === 0 && diff / first >= 0 );
					}
				};
		},

		"PSEUDO": function( pseudo, argument ) {
			// pseudo-class names are case-insensitive
			// http://www.w3.org/TR/selectors/#pseudo-classes
			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
			// Remember that setFilters inherits from pseudos
			var args,
				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
					Sizzle.error( "unsupported pseudo: " + pseudo );

			// The user may use createPseudo to indicate that
			// arguments are needed to create the filter function
			// just as Sizzle does
			if ( fn[ expando ] ) {
				return fn( argument );
			}

			// But maintain support for old signatures
			if ( fn.length > 1 ) {
				args = [ pseudo, pseudo, "", argument ];
				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
					markFunction(function( seed, matches ) {
						var idx,
							matched = fn( seed, argument ),
							i = matched.length;
						while ( i-- ) {
							idx = indexOf( seed, matched[i] );
							seed[ idx ] = !( matches[ idx ] = matched[i] );
						}
					}) :
					function( elem ) {
						return fn( elem, 0, args );
					};
			}

			return fn;
		}
	},

	pseudos: {
		// Potentially complex pseudos
		"not": markFunction(function( selector ) {
			// Trim the selector passed to compile
			// to avoid treating leading and trailing
			// spaces as combinators
			var input = [],
				results = [],
				matcher = compile( selector.replace( rtrim, "$1" ) );

			return matcher[ expando ] ?
				markFunction(function( seed, matches, context, xml ) {
					var elem,
						unmatched = matcher( seed, null, xml, [] ),
						i = seed.length;

					// Match elements unmatched by `matcher`
					while ( i-- ) {
						if ( (elem = unmatched[i]) ) {
							seed[i] = !(matches[i] = elem);
						}
					}
				}) :
				function( elem, context, xml ) {
					input[0] = elem;
					matcher( input, null, xml, results );
					// Don't keep the element (issue #299)
					input[0] = null;
					return !results.pop();
				};
		}),

		"has": markFunction(function( selector ) {
			return function( elem ) {
				return Sizzle( selector, elem ).length > 0;
			};
		}),

		"contains": markFunction(function( text ) {
			text = text.replace( runescape, funescape );
			return function( elem ) {
				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
			};
		}),

		// "Whether an element is represented by a :lang() selector
		// is based solely on the element's language value
		// being equal to the identifier C,
		// or beginning with the identifier C immediately followed by "-".
		// The matching of C against the element's language value is performed case-insensitively.
		// The identifier C does not have to be a valid language name."
		// http://www.w3.org/TR/selectors/#lang-pseudo
		"lang": markFunction( function( lang ) {
			// lang value must be a valid identifier
			if ( !ridentifier.test(lang || "") ) {
				Sizzle.error( "unsupported lang: " + lang );
			}
			lang = lang.replace( runescape, funescape ).toLowerCase();
			return function( elem ) {
				var elemLang;
				do {
					if ( (elemLang = documentIsHTML ?
						elem.lang :
						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {

						elemLang = elemLang.toLowerCase();
						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
					}
				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
				return false;
			};
		}),

		// Miscellaneous
		"target": function( elem ) {
			var hash = window.location && window.location.hash;
			return hash && hash.slice( 1 ) === elem.id;
		},

		"root": function( elem ) {
			return elem === docElem;
		},

		"focus": function( elem ) {
			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
		},

		// Boolean properties
		"enabled": createDisabledPseudo( false ),
		"disabled": createDisabledPseudo( true ),

		"checked": function( elem ) {
			// In CSS3, :checked should return both checked and selected elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			var nodeName = elem.nodeName.toLowerCase();
			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
		},

		"selected": function( elem ) {
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		// Contents
		"empty": function( elem ) {
			// http://www.w3.org/TR/selectors/#empty-pseudo
			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
			//   but not by others (comment: 8; processing instruction: 7; etc.)
			// nodeType < 6 works because attributes (2) do not appear as children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				if ( elem.nodeType < 6 ) {
					return false;
				}
			}
			return true;
		},

		"parent": function( elem ) {
			return !Expr.pseudos["empty"]( elem );
		},

		// Element/input types
		"header": function( elem ) {
			return rheader.test( elem.nodeName );
		},

		"input": function( elem ) {
			return rinputs.test( elem.nodeName );
		},

		"button": function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && elem.type === "button" || name === "button";
		},

		"text": function( elem ) {
			var attr;
			return elem.nodeName.toLowerCase() === "input" &&
				elem.type === "text" &&

				// Support: IE<8
				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
		},

		// Position-in-collection
		"first": createPositionalPseudo(function() {
			return [ 0 ];
		}),

		"last": createPositionalPseudo(function( matchIndexes, length ) {
			return [ length - 1 ];
		}),

		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
			return [ argument < 0 ? argument + length : argument ];
		}),

		"even": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 0;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"odd": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 1;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; --i >= 0; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; ++i < length; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		})
	}
};

Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Add button/input type pseudos
for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
	Expr.pseudos[ i ] = createInputPseudo( i );
}
for ( i in { submit: true, reset: true } ) {
	Expr.pseudos[ i ] = createButtonPseudo( i );
}

// Easy API for creating new setFilters
function setFilters() {}
setFilters.prototype = Expr.filters = Expr.pseudos;
Expr.setFilters = new setFilters();

tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
	var matched, match, tokens, type,
		soFar, groups, preFilters,
		cached = tokenCache[ selector + " " ];

	if ( cached ) {
		return parseOnly ? 0 : cached.slice( 0 );
	}

	soFar = selector;
	groups = [];
	preFilters = Expr.preFilter;

	while ( soFar ) {

		// Comma and first run
		if ( !matched || (match = rcomma.exec( soFar )) ) {
			if ( match ) {
				// Don't consume trailing commas as valid
				soFar = soFar.slice( match[0].length ) || soFar;
			}
			groups.push( (tokens = []) );
		}

		matched = false;

		// Combinators
		if ( (match = rcombinators.exec( soFar )) ) {
			matched = match.shift();
			tokens.push({
				value: matched,
				// Cast descendant combinators to space
				type: match[0].replace( rtrim, " " )
			});
			soFar = soFar.slice( matched.length );
		}

		// Filters
		for ( type in Expr.filter ) {
			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
				(match = preFilters[ type ]( match ))) ) {
				matched = match.shift();
				tokens.push({
					value: matched,
					type: type,
					matches: match
				});
				soFar = soFar.slice( matched.length );
			}
		}

		if ( !matched ) {
			break;
		}
	}

	// Return the length of the invalid excess
	// if we're just parsing
	// Otherwise, throw an error or return tokens
	return parseOnly ?
		soFar.length :
		soFar ?
			Sizzle.error( selector ) :
			// Cache the tokens
			tokenCache( selector, groups ).slice( 0 );
};

function toSelector( tokens ) {
	var i = 0,
		len = tokens.length,
		selector = "";
	for ( ; i < len; i++ ) {
		selector += tokens[i].value;
	}
	return selector;
}

function addCombinator( matcher, combinator, base ) {
	var dir = combinator.dir,
		skip = combinator.next,
		key = skip || dir,
		checkNonElements = base && key === "parentNode",
		doneName = done++;

	return combinator.first ?
		// Check against closest ancestor/preceding element
		function( elem, context, xml ) {
			while ( (elem = elem[ dir ]) ) {
				if ( elem.nodeType === 1 || checkNonElements ) {
					return matcher( elem, context, xml );
				}
			}
			return false;
		} :

		// Check against all ancestor/preceding elements
		function( elem, context, xml ) {
			var oldCache, uniqueCache, outerCache,
				newCache = [ dirruns, doneName ];

			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
			if ( xml ) {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						if ( matcher( elem, context, xml ) ) {
							return true;
						}
					}
				}
			} else {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						outerCache = elem[ expando ] || (elem[ expando ] = {});

						// Support: IE <9 only
						// Defend against cloned attroperties (jQuery gh-1709)
						uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});

						if ( skip && skip === elem.nodeName.toLowerCase() ) {
							elem = elem[ dir ] || elem;
						} else if ( (oldCache = uniqueCache[ key ]) &&
							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {

							// Assign to newCache so results back-propagate to previous elements
							return (newCache[ 2 ] = oldCache[ 2 ]);
						} else {
							// Reuse newcache so results back-propagate to previous elements
							uniqueCache[ key ] = newCache;

							// A match means we're done; a fail means we have to keep checking
							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
								return true;
							}
						}
					}
				}
			}
			return false;
		};
}

function elementMatcher( matchers ) {
	return matchers.length > 1 ?
		function( elem, context, xml ) {
			var i = matchers.length;
			while ( i-- ) {
				if ( !matchers[i]( elem, context, xml ) ) {
					return false;
				}
			}
			return true;
		} :
		matchers[0];
}

function multipleContexts( selector, contexts, results ) {
	var i = 0,
		len = contexts.length;
	for ( ; i < len; i++ ) {
		Sizzle( selector, contexts[i], results );
	}
	return results;
}

function condense( unmatched, map, filter, context, xml ) {
	var elem,
		newUnmatched = [],
		i = 0,
		len = unmatched.length,
		mapped = map != null;

	for ( ; i < len; i++ ) {
		if ( (elem = unmatched[i]) ) {
			if ( !filter || filter( elem, context, xml ) ) {
				newUnmatched.push( elem );
				if ( mapped ) {
					map.push( i );
				}
			}
		}
	}

	return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
	if ( postFilter && !postFilter[ expando ] ) {
		postFilter = setMatcher( postFilter );
	}
	if ( postFinder && !postFinder[ expando ] ) {
		postFinder = setMatcher( postFinder, postSelector );
	}
	return markFunction(function( seed, results, context, xml ) {
		var temp, i, elem,
			preMap = [],
			postMap = [],
			preexisting = results.length,

			// Get initial elements from seed or context
			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

			// Prefilter to get matcher input, preserving a map for seed-results synchronization
			matcherIn = preFilter && ( seed || !selector ) ?
				condense( elems, preMap, preFilter, context, xml ) :
				elems,

			matcherOut = matcher ?
				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

					// ...intermediate processing is necessary
					[] :

					// ...otherwise use results directly
					results :
				matcherIn;

		// Find primary matches
		if ( matcher ) {
			matcher( matcherIn, matcherOut, context, xml );
		}

		// Apply postFilter
		if ( postFilter ) {
			temp = condense( matcherOut, postMap );
			postFilter( temp, [], context, xml );

			// Un-match failing elements by moving them back to matcherIn
			i = temp.length;
			while ( i-- ) {
				if ( (elem = temp[i]) ) {
					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
				}
			}
		}

		if ( seed ) {
			if ( postFinder || preFilter ) {
				if ( postFinder ) {
					// Get the final matcherOut by condensing this intermediate into postFinder contexts
					temp = [];
					i = matcherOut.length;
					while ( i-- ) {
						if ( (elem = matcherOut[i]) ) {
							// Restore matcherIn since elem is not yet a final match
							temp.push( (matcherIn[i] = elem) );
						}
					}
					postFinder( null, (matcherOut = []), temp, xml );
				}

				// Move matched elements from seed to results to keep them synchronized
				i = matcherOut.length;
				while ( i-- ) {
					if ( (elem = matcherOut[i]) &&
						(temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {

						seed[temp] = !(results[temp] = elem);
					}
				}
			}

		// Add elements to results, through postFinder if defined
		} else {
			matcherOut = condense(
				matcherOut === results ?
					matcherOut.splice( preexisting, matcherOut.length ) :
					matcherOut
			);
			if ( postFinder ) {
				postFinder( null, results, matcherOut, xml );
			} else {
				push.apply( results, matcherOut );
			}
		}
	});
}

function matcherFromTokens( tokens ) {
	var checkContext, matcher, j,
		len = tokens.length,
		leadingRelative = Expr.relative[ tokens[0].type ],
		implicitRelative = leadingRelative || Expr.relative[" "],
		i = leadingRelative ? 1 : 0,

		// The foundational matcher ensures that elements are reachable from top-level context(s)
		matchContext = addCombinator( function( elem ) {
			return elem === checkContext;
		}, implicitRelative, true ),
		matchAnyContext = addCombinator( function( elem ) {
			return indexOf( checkContext, elem ) > -1;
		}, implicitRelative, true ),
		matchers = [ function( elem, context, xml ) {
			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
				(checkContext = context).nodeType ?
					matchContext( elem, context, xml ) :
					matchAnyContext( elem, context, xml ) );
			// Avoid hanging onto element (issue #299)
			checkContext = null;
			return ret;
		} ];

	for ( ; i < len; i++ ) {
		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
		} else {
			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

			// Return special upon seeing a positional matcher
			if ( matcher[ expando ] ) {
				// Find the next relative operator (if any) for proper handling
				j = ++i;
				for ( ; j < len; j++ ) {
					if ( Expr.relative[ tokens[j].type ] ) {
						break;
					}
				}
				return setMatcher(
					i > 1 && elementMatcher( matchers ),
					i > 1 && toSelector(
						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
					).replace( rtrim, "$1" ),
					matcher,
					i < j && matcherFromTokens( tokens.slice( i, j ) ),
					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
					j < len && toSelector( tokens )
				);
			}
			matchers.push( matcher );
		}
	}

	return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
	var bySet = setMatchers.length > 0,
		byElement = elementMatchers.length > 0,
		superMatcher = function( seed, context, xml, results, outermost ) {
			var elem, j, matcher,
				matchedCount = 0,
				i = "0",
				unmatched = seed && [],
				setMatched = [],
				contextBackup = outermostContext,
				// We must always have either seed elements or outermost context
				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
				// Use integer dirruns iff this is the outermost matcher
				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
				len = elems.length;

			if ( outermost ) {
				outermostContext = context === document || context || outermost;
			}

			// Add elements passing elementMatchers directly to results
			// Support: IE<9, Safari
			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
				if ( byElement && elem ) {
					j = 0;
					if ( !context && elem.ownerDocument !== document ) {
						setDocument( elem );
						xml = !documentIsHTML;
					}
					while ( (matcher = elementMatchers[j++]) ) {
						if ( matcher( elem, context || document, xml) ) {
							results.push( elem );
							break;
						}
					}
					if ( outermost ) {
						dirruns = dirrunsUnique;
					}
				}

				// Track unmatched elements for set filters
				if ( bySet ) {
					// They will have gone through all possible matchers
					if ( (elem = !matcher && elem) ) {
						matchedCount--;
					}

					// Lengthen the array for every element, matched or not
					if ( seed ) {
						unmatched.push( elem );
					}
				}
			}

			// `i` is now the count of elements visited above, and adding it to `matchedCount`
			// makes the latter nonnegative.
			matchedCount += i;

			// Apply set filters to unmatched elements
			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
			// no element matchers and no seed.
			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
			// numerically zero.
			if ( bySet && i !== matchedCount ) {
				j = 0;
				while ( (matcher = setMatchers[j++]) ) {
					matcher( unmatched, setMatched, context, xml );
				}

				if ( seed ) {
					// Reintegrate element matches to eliminate the need for sorting
					if ( matchedCount > 0 ) {
						while ( i-- ) {
							if ( !(unmatched[i] || setMatched[i]) ) {
								setMatched[i] = pop.call( results );
							}
						}
					}

					// Discard index placeholder values to get only actual matches
					setMatched = condense( setMatched );
				}

				// Add matches to results
				push.apply( results, setMatched );

				// Seedless set matches succeeding multiple successful matchers stipulate sorting
				if ( outermost && !seed && setMatched.length > 0 &&
					( matchedCount + setMatchers.length ) > 1 ) {

					Sizzle.uniqueSort( results );
				}
			}

			// Override manipulation of globals by nested matchers
			if ( outermost ) {
				dirruns = dirrunsUnique;
				outermostContext = contextBackup;
			}

			return unmatched;
		};

	return bySet ?
		markFunction( superMatcher ) :
		superMatcher;
}

compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
	var i,
		setMatchers = [],
		elementMatchers = [],
		cached = compilerCache[ selector + " " ];

	if ( !cached ) {
		// Generate a function of recursive functions that can be used to check each element
		if ( !match ) {
			match = tokenize( selector );
		}
		i = match.length;
		while ( i-- ) {
			cached = matcherFromTokens( match[i] );
			if ( cached[ expando ] ) {
				setMatchers.push( cached );
			} else {
				elementMatchers.push( cached );
			}
		}

		// Cache the compiled function
		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );

		// Save selector and tokenization
		cached.selector = selector;
	}
	return cached;
};

/**
 * A low-level selection function that works with Sizzle's compiled
 *  selector functions
 * @param {String|Function} selector A selector or a pre-compiled
 *  selector function built with Sizzle.compile
 * @param {Element} context
 * @param {Array} [results]
 * @param {Array} [seed] A set of elements to match against
 */
select = Sizzle.select = function( selector, context, results, seed ) {
	var i, tokens, token, type, find,
		compiled = typeof selector === "function" && selector,
		match = !seed && tokenize( (selector = compiled.selector || selector) );

	results = results || [];

	// Try to minimize operations if there is only one selector in the list and no seed
	// (the latter of which guarantees us context)
	if ( match.length === 1 ) {

		// Reduce context if the leading compound selector is an ID
		tokens = match[0] = match[0].slice( 0 );
		if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
				context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[1].type ] ) {

			context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
			if ( !context ) {
				return results;

			// Precompiled matchers will still verify ancestry, so step up a level
			} else if ( compiled ) {
				context = context.parentNode;
			}

			selector = selector.slice( tokens.shift().value.length );
		}

		// Fetch a seed set for right-to-left matching
		i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
		while ( i-- ) {
			token = tokens[i];

			// Abort if we hit a combinator
			if ( Expr.relative[ (type = token.type) ] ) {
				break;
			}
			if ( (find = Expr.find[ type ]) ) {
				// Search, expanding context for leading sibling combinators
				if ( (seed = find(
					token.matches[0].replace( runescape, funescape ),
					rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
				)) ) {

					// If seed is empty or no tokens remain, we can return early
					tokens.splice( i, 1 );
					selector = seed.length && toSelector( tokens );
					if ( !selector ) {
						push.apply( results, seed );
						return results;
					}

					break;
				}
			}
		}
	}

	// Compile and execute a filtering function if one is not provided
	// Provide `match` to avoid retokenization if we modified the selector above
	( compiled || compile( selector, match ) )(
		seed,
		context,
		!documentIsHTML,
		results,
		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
	);
	return results;
};

// One-time assignments

// Sort stability
support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;

// Support: Chrome 14-35+
// Always assume duplicates if they aren't passed to the comparison function
support.detectDuplicates = !!hasDuplicate;

// Initialize against the default document
setDocument();

// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
// Detached nodes confoundingly follow *each other*
support.sortDetached = assert(function( el ) {
	// Should return 1, but returns 4 (following)
	return el.compareDocumentPosition( document.createElement("fieldset") ) & 1;
});

// Support: IE<8
// Prevent attribute/property "interpolation"
// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( el ) {
	el.innerHTML = "<a href='#'></a>";
	return el.firstChild.getAttribute("href") === "#" ;
}) ) {
	addHandle( "type|href|height|width", function( elem, name, isXML ) {
		if ( !isXML ) {
			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
		}
	});
}

// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert(function( el ) {
	el.innerHTML = "<input/>";
	el.firstChild.setAttribute( "value", "" );
	return el.firstChild.getAttribute( "value" ) === "";
}) ) {
	addHandle( "value", function( elem, name, isXML ) {
		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
			return elem.defaultValue;
		}
	});
}

// Support: IE<9
// Use getAttributeNode to fetch booleans when getAttribute lies
if ( !assert(function( el ) {
	return el.getAttribute("disabled") == null;
}) ) {
	addHandle( booleans, function( elem, name, isXML ) {
		var val;
		if ( !isXML ) {
			return elem[ name ] === true ? name.toLowerCase() :
					(val = elem.getAttributeNode( name )) && val.specified ?
					val.value :
				null;
		}
	});
}

return Sizzle;

})( window );



jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;

// Deprecated
jQuery.expr[ ":" ] = jQuery.expr.pseudos;
jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains;
jQuery.escapeSelector = Sizzle.escape;




var dir = function( elem, dir, until ) {
	var matched = [],
		truncate = until !== undefined;

	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
		if ( elem.nodeType === 1 ) {
			if ( truncate && jQuery( elem ).is( until ) ) {
				break;
			}
			matched.push( elem );
		}
	}
	return matched;
};


var siblings = function( n, elem ) {
	var matched = [];

	for ( ; n; n = n.nextSibling ) {
		if ( n.nodeType === 1 && n !== elem ) {
			matched.push( n );
		}
	}

	return matched;
};


var rneedsContext = jQuery.expr.match.needsContext;



function nodeName( elem, name ) {

  return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();

};
var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );



// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
	if ( isFunction( qualifier ) ) {
		return jQuery.grep( elements, function( elem, i ) {
			return !!qualifier.call( elem, i, elem ) !== not;
		} );
	}

	// Single element
	if ( qualifier.nodeType ) {
		return jQuery.grep( elements, function( elem ) {
			return ( elem === qualifier ) !== not;
		} );
	}

	// Arraylike of elements (jQuery, arguments, Array)
	if ( typeof qualifier !== "string" ) {
		return jQuery.grep( elements, function( elem ) {
			return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
		} );
	}

	// Filtered directly for both simple and complex selectors
	return jQuery.filter( qualifier, elements, not );
}

jQuery.filter = function( expr, elems, not ) {
	var elem = elems[ 0 ];

	if ( not ) {
		expr = ":not(" + expr + ")";
	}

	if ( elems.length === 1 && elem.nodeType === 1 ) {
		return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
	}

	return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
		return elem.nodeType === 1;
	} ) );
};

jQuery.fn.extend( {
	find: function( selector ) {
		var i, ret,
			len = this.length,
			self = this;

		if ( typeof selector !== "string" ) {
			return this.pushStack( jQuery( selector ).filter( function() {
				for ( i = 0; i < len; i++ ) {
					if ( jQuery.contains( self[ i ], this ) ) {
						return true;
					}
				}
			} ) );
		}

		ret = this.pushStack( [] );

		for ( i = 0; i < len; i++ ) {
			jQuery.find( selector, self[ i ], ret );
		}

		return len > 1 ? jQuery.uniqueSort( ret ) : ret;
	},
	filter: function( selector ) {
		return this.pushStack( winnow( this, selector || [], false ) );
	},
	not: function( selector ) {
		return this.pushStack( winnow( this, selector || [], true ) );
	},
	is: function( selector ) {
		return !!winnow(
			this,

			// If this is a positional/relative selector, check membership in the returned set
			// so $("p:first").is("p:last") won't return true for a doc with two "p".
			typeof selector === "string" && rneedsContext.test( selector ) ?
				jQuery( selector ) :
				selector || [],
			false
		).length;
	}
} );


// Initialize a jQuery object


// A central reference to the root jQuery(document)
var rootjQuery,

	// A simple way to check for HTML strings
	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
	// Strict HTML recognition (#11290: must start with <)
	// Shortcut simple #id case for speed
	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,

	init = jQuery.fn.init = function( selector, context, root ) {
		var match, elem;

		// HANDLE: $(""), $(null), $(undefined), $(false)
		if ( !selector ) {
			return this;
		}

		// Method init() accepts an alternate rootjQuery
		// so migrate can support jQuery.sub (gh-2101)
		root = root || rootjQuery;

		// Handle HTML strings
		if ( typeof selector === "string" ) {
			if ( selector[ 0 ] === "<" &&
				selector[ selector.length - 1 ] === ">" &&
				selector.length >= 3 ) {

				// Assume that strings that start and end with <> are HTML and skip the regex check
				match = [ null, selector, null ];

			} else {
				match = rquickExpr.exec( selector );
			}

			// Match html or make sure no context is specified for #id
			if ( match && ( match[ 1 ] || !context ) ) {

				// HANDLE: $(html) -> $(array)
				if ( match[ 1 ] ) {
					context = context instanceof jQuery ? context[ 0 ] : context;

					// Option to run scripts is true for back-compat
					// Intentionally let the error be thrown if parseHTML is not present
					jQuery.merge( this, jQuery.parseHTML(
						match[ 1 ],
						context && context.nodeType ? context.ownerDocument || context : document,
						true
					) );

					// HANDLE: $(html, props)
					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
						for ( match in context ) {

							// Properties of context are called as methods if possible
							if ( isFunction( this[ match ] ) ) {
								this[ match ]( context[ match ] );

							// ...and otherwise set as attributes
							} else {
								this.attr( match, context[ match ] );
							}
						}
					}

					return this;

				// HANDLE: $(#id)
				} else {
					elem = document.getElementById( match[ 2 ] );

					if ( elem ) {

						// Inject the element directly into the jQuery object
						this[ 0 ] = elem;
						this.length = 1;
					}
					return this;
				}

			// HANDLE: $(expr, $(...))
			} else if ( !context || context.jquery ) {
				return ( context || root ).find( selector );

			// HANDLE: $(expr, context)
			// (which is just equivalent to: $(context).find(expr)
			} else {
				return this.constructor( context ).find( selector );
			}

		// HANDLE: $(DOMElement)
		} else if ( selector.nodeType ) {
			this[ 0 ] = selector;
			this.length = 1;
			return this;

		// HANDLE: $(function)
		// Shortcut for document ready
		} else if ( isFunction( selector ) ) {
			return root.ready !== undefined ?
				root.ready( selector ) :

				// Execute immediately if ready is not present
				selector( jQuery );
		}

		return jQuery.makeArray( selector, this );
	};

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );


var rparentsprev = /^(?:parents|prev(?:Until|All))/,

	// Methods guaranteed to produce a unique set when starting from a unique set
	guaranteedUnique = {
		children: true,
		contents: true,
		next: true,
		prev: true
	};

jQuery.fn.extend( {
	has: function( target ) {
		var targets = jQuery( target, this ),
			l = targets.length;

		return this.filter( function() {
			var i = 0;
			for ( ; i < l; i++ ) {
				if ( jQuery.contains( this, targets[ i ] ) ) {
					return true;
				}
			}
		} );
	},

	closest: function( selectors, context ) {
		var cur,
			i = 0,
			l = this.length,
			matched = [],
			targets = typeof selectors !== "string" && jQuery( selectors );

		// Positional selectors never match, since there's no _selection_ context
		if ( !rneedsContext.test( selectors ) ) {
			for ( ; i < l; i++ ) {
				for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {

					// Always skip document fragments
					if ( cur.nodeType < 11 && ( targets ?
						targets.index( cur ) > -1 :

						// Don't pass non-elements to Sizzle
						cur.nodeType === 1 &&
							jQuery.find.matchesSelector( cur, selectors ) ) ) {

						matched.push( cur );
						break;
					}
				}
			}
		}

		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
	},

	// Determine the position of an element within the set
	index: function( elem ) {

		// No argument, return index in parent
		if ( !elem ) {
			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
		}

		// Index in selector
		if ( typeof elem === "string" ) {
			return indexOf.call( jQuery( elem ), this[ 0 ] );
		}

		// Locate the position of the desired element
		return indexOf.call( this,

			// If it receives a jQuery object, the first element is used
			elem.jquery ? elem[ 0 ] : elem
		);
	},

	add: function( selector, context ) {
		return this.pushStack(
			jQuery.uniqueSort(
				jQuery.merge( this.get(), jQuery( selector, context ) )
			)
		);
	},

	addBack: function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter( selector )
		);
	}
} );

function sibling( cur, dir ) {
	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
	return cur;
}

jQuery.each( {
	parent: function( elem ) {
		var parent = elem.parentNode;
		return parent && parent.nodeType !== 11 ? parent : null;
	},
	parents: function( elem ) {
		return dir( elem, "parentNode" );
	},
	parentsUntil: function( elem, i, until ) {
		return dir( elem, "parentNode", until );
	},
	next: function( elem ) {
		return sibling( elem, "nextSibling" );
	},
	prev: function( elem ) {
		return sibling( elem, "previousSibling" );
	},
	nextAll: function( elem ) {
		return dir( elem, "nextSibling" );
	},
	prevAll: function( elem ) {
		return dir( elem, "previousSibling" );
	},
	nextUntil: function( elem, i, until ) {
		return dir( elem, "nextSibling", until );
	},
	prevUntil: function( elem, i, until ) {
		return dir( elem, "previousSibling", until );
	},
	siblings: function( elem ) {
		return siblings( ( elem.parentNode || {} ).firstChild, elem );
	},
	children: function( elem ) {
		return siblings( elem.firstChild );
	},
	contents: function( elem ) {
        if ( nodeName( elem, "iframe" ) ) {
            return elem.contentDocument;
        }

        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
        // Treat the template element as a regular one in browsers that
        // don't support it.
        if ( nodeName( elem, "template" ) ) {
            elem = elem.content || elem;
        }

        return jQuery.merge( [], elem.childNodes );
	}
}, function( name, fn ) {
	jQuery.fn[ name ] = function( until, selector ) {
		var matched = jQuery.map( this, fn, until );

		if ( name.slice( -5 ) !== "Until" ) {
			selector = until;
		}

		if ( selector && typeof selector === "string" ) {
			matched = jQuery.filter( selector, matched );
		}

		if ( this.length > 1 ) {

			// Remove duplicates
			if ( !guaranteedUnique[ name ] ) {
				jQuery.uniqueSort( matched );
			}

			// Reverse order for parents* and prev-derivatives
			if ( rparentsprev.test( name ) ) {
				matched.reverse();
			}
		}

		return this.pushStack( matched );
	};
} );
var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );



// Convert String-formatted options into Object-formatted ones
function createOptions( options ) {
	var object = {};
	jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
		object[ flag ] = true;
	} );
	return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *	options: an optional list of space-separated options that will change how
 *			the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *	once:			will ensure the callback list can only be fired once (like a Deferred)
 *
 *	memory:			will keep track of previous values and will call any callback added
 *					after the list has been fired right away with the latest "memorized"
 *					values (like a Deferred)
 *
 *	unique:			will ensure a callback can only be added once (no duplicate in the list)
 *
 *	stopOnFalse:	interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

	// Convert options from String-formatted to Object-formatted if needed
	// (we check in cache first)
	options = typeof options === "string" ?
		createOptions( options ) :
		jQuery.extend( {}, options );

	var // Flag to know if list is currently firing
		firing,

		// Last fire value for non-forgettable lists
		memory,

		// Flag to know if list was already fired
		fired,

		// Flag to prevent firing
		locked,

		// Actual callback list
		list = [],

		// Queue of execution data for repeatable lists
		queue = [],

		// Index of currently firing callback (modified by add/remove as needed)
		firingIndex = -1,

		// Fire callbacks
		fire = function() {

			// Enforce single-firing
			locked = locked || options.once;

			// Execute callbacks for all pending executions,
			// respecting firingIndex overrides and runtime changes
			fired = firing = true;
			for ( ; queue.length; firingIndex = -1 ) {
				memory = queue.shift();
				while ( ++firingIndex < list.length ) {

					// Run callback and check for early termination
					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
						options.stopOnFalse ) {

						// Jump to end and forget the data so .add doesn't re-fire
						firingIndex = list.length;
						memory = false;
					}
				}
			}

			// Forget the data if we're done with it
			if ( !options.memory ) {
				memory = false;
			}

			firing = false;

			// Clean up if we're done firing for good
			if ( locked ) {

				// Keep an empty list if we have data for future add calls
				if ( memory ) {
					list = [];

				// Otherwise, this object is spent
				} else {
					list = "";
				}
			}
		},

		// Actual Callbacks object
		self = {

			// Add a callback or a collection of callbacks to the list
			add: function() {
				if ( list ) {

					// If we have memory from a past run, we should fire after adding
					if ( memory && !firing ) {
						firingIndex = list.length - 1;
						queue.push( memory );
					}

					( function add( args ) {
						jQuery.each( args, function( _, arg ) {
							if ( isFunction( arg ) ) {
								if ( !options.unique || !self.has( arg ) ) {
									list.push( arg );
								}
							} else if ( arg && arg.length && toType( arg ) !== "string" ) {

								// Inspect recursively
								add( arg );
							}
						} );
					} )( arguments );

					if ( memory && !firing ) {
						fire();
					}
				}
				return this;
			},

			// Remove a callback from the list
			remove: function() {
				jQuery.each( arguments, function( _, arg ) {
					var index;
					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
						list.splice( index, 1 );

						// Handle firing indexes
						if ( index <= firingIndex ) {
							firingIndex--;
						}
					}
				} );
				return this;
			},

			// Check if a given callback is in the list.
			// If no argument is given, return whether or not list has callbacks attached.
			has: function( fn ) {
				return fn ?
					jQuery.inArray( fn, list ) > -1 :
					list.length > 0;
			},

			// Remove all callbacks from the list
			empty: function() {
				if ( list ) {
					list = [];
				}
				return this;
			},

			// Disable .fire and .add
			// Abort any current/pending executions
			// Clear all callbacks and values
			disable: function() {
				locked = queue = [];
				list = memory = "";
				return this;
			},
			disabled: function() {
				return !list;
			},

			// Disable .fire
			// Also disable .add unless we have memory (since it would have no effect)
			// Abort any pending executions
			lock: function() {
				locked = queue = [];
				if ( !memory && !firing ) {
					list = memory = "";
				}
				return this;
			},
			locked: function() {
				return !!locked;
			},

			// Call all callbacks with the given context and arguments
			fireWith: function( context, args ) {
				if ( !locked ) {
					args = args || [];
					args = [ context, args.slice ? args.slice() : args ];
					queue.push( args );
					if ( !firing ) {
						fire();
					}
				}
				return this;
			},

			// Call all the callbacks with the given arguments
			fire: function() {
				self.fireWith( this, arguments );
				return this;
			},

			// To know if the callbacks have already been called at least once
			fired: function() {
				return !!fired;
			}
		};

	return self;
};


function Identity( v ) {
	return v;
}
function Thrower( ex ) {
	throw ex;
}

function adoptValue( value, resolve, reject, noValue ) {
	var method;

	try {

		// Check for promise aspect first to privilege synchronous behavior
		if ( value && isFunction( ( method = value.promise ) ) ) {
			method.call( value ).done( resolve ).fail( reject );

		// Other thenables
		} else if ( value && isFunction( ( method = value.then ) ) ) {
			method.call( value, resolve, reject );

		// Other non-thenables
		} else {

			// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
			// * false: [ value ].slice( 0 ) => resolve( value )
			// * true: [ value ].slice( 1 ) => resolve()
			resolve.apply( undefined, [ value ].slice( noValue ) );
		}

	// For Promises/A+, convert exceptions into rejections
	// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
	// Deferred#then to conditionally suppress rejection.
	} catch ( value ) {

		// Support: Android 4.0 only
		// Strict mode functions invoked without .call/.apply get global-object context
		reject.apply( undefined, [ value ] );
	}
}

jQuery.extend( {

	Deferred: function( func ) {
		var tuples = [

				// action, add listener, callbacks,
				// ... .then handlers, argument index, [final state]
				[ "notify", "progress", jQuery.Callbacks( "memory" ),
					jQuery.Callbacks( "memory" ), 2 ],
				[ "resolve", "done", jQuery.Callbacks( "once memory" ),
					jQuery.Callbacks( "once memory" ), 0, "resolved" ],
				[ "reject", "fail", jQuery.Callbacks( "once memory" ),
					jQuery.Callbacks( "once memory" ), 1, "rejected" ]
			],
			state = "pending",
			promise = {
				state: function() {
					return state;
				},
				always: function() {
					deferred.done( arguments ).fail( arguments );
					return this;
				},
				"catch": function( fn ) {
					return promise.then( null, fn );
				},

				// Keep pipe for back-compat
				pipe: function( /* fnDone, fnFail, fnProgress */ ) {
					var fns = arguments;

					return jQuery.Deferred( function( newDefer ) {
						jQuery.each( tuples, function( i, tuple ) {

							// Map tuples (progress, done, fail) to arguments (done, fail, progress)
							var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];

							// deferred.progress(function() { bind to newDefer or newDefer.notify })
							// deferred.done(function() { bind to newDefer or newDefer.resolve })
							// deferred.fail(function() { bind to newDefer or newDefer.reject })
							deferred[ tuple[ 1 ] ]( function() {
								var returned = fn && fn.apply( this, arguments );
								if ( returned && isFunction( returned.promise ) ) {
									returned.promise()
										.progress( newDefer.notify )
										.done( newDefer.resolve )
										.fail( newDefer.reject );
								} else {
									newDefer[ tuple[ 0 ] + "With" ](
										this,
										fn ? [ returned ] : arguments
									);
								}
							} );
						} );
						fns = null;
					} ).promise();
				},
				then: function( onFulfilled, onRejected, onProgress ) {
					var maxDepth = 0;
					function resolve( depth, deferred, handler, special ) {
						return function() {
							var that = this,
								args = arguments,
								mightThrow = function() {
									var returned, then;

									// Support: Promises/A+ section 2.3.3.3.3
									// https://promisesaplus.com/#point-59
									// Ignore double-resolution attempts
									if ( depth < maxDepth ) {
										return;
									}

									returned = handler.apply( that, args );

									// Support: Promises/A+ section 2.3.1
									// https://promisesaplus.com/#point-48
									if ( returned === deferred.promise() ) {
										throw new TypeError( "Thenable self-resolution" );
									}

									// Support: Promises/A+ sections 2.3.3.1, 3.5
									// https://promisesaplus.com/#point-54
									// https://promisesaplus.com/#point-75
									// Retrieve `then` only once
									then = returned &&

										// Support: Promises/A+ section 2.3.4
										// https://promisesaplus.com/#point-64
										// Only check objects and functions for thenability
										( typeof returned === "object" ||
											typeof returned === "function" ) &&
										returned.then;

									// Handle a returned thenable
									if ( isFunction( then ) ) {

										// Special processors (notify) just wait for resolution
										if ( special ) {
											then.call(
												returned,
												resolve( maxDepth, deferred, Identity, special ),
												resolve( maxDepth, deferred, Thrower, special )
											);

										// Normal processors (resolve) also hook into progress
										} else {

											// ...and disregard older resolution values
											maxDepth++;

											then.call(
												returned,
												resolve( maxDepth, deferred, Identity, special ),
												resolve( maxDepth, deferred, Thrower, special ),
												resolve( maxDepth, deferred, Identity,
													deferred.notifyWith )
											);
										}

									// Handle all other returned values
									} else {

										// Only substitute handlers pass on context
										// and multiple values (non-spec behavior)
										if ( handler !== Identity ) {
											that = undefined;
											args = [ returned ];
										}

										// Process the value(s)
										// Default process is resolve
										( special || deferred.resolveWith )( that, args );
									}
								},

								// Only normal processors (resolve) catch and reject exceptions
								process = special ?
									mightThrow :
									function() {
										try {
											mightThrow();
										} catch ( e ) {

											if ( jQuery.Deferred.exceptionHook ) {
												jQuery.Deferred.exceptionHook( e,
													process.stackTrace );
											}

											// Support: Promises/A+ section 2.3.3.3.4.1
											// https://promisesaplus.com/#point-61
											// Ignore post-resolution exceptions
											if ( depth + 1 >= maxDepth ) {

												// Only substitute handlers pass on context
												// and multiple values (non-spec behavior)
												if ( handler !== Thrower ) {
													that = undefined;
													args = [ e ];
												}

												deferred.rejectWith( that, args );
											}
										}
									};

							// Support: Promises/A+ section 2.3.3.3.1
							// https://promisesaplus.com/#point-57
							// Re-resolve promises immediately to dodge false rejection from
							// subsequent errors
							if ( depth ) {
								process();
							} else {

								// Call an optional hook to record the stack, in case of exception
								// since it's otherwise lost when execution goes async
								if ( jQuery.Deferred.getStackHook ) {
									process.stackTrace = jQuery.Deferred.getStackHook();
								}
								window.setTimeout( process );
							}
						};
					}

					return jQuery.Deferred( function( newDefer ) {

						// progress_handlers.add( ... )
						tuples[ 0 ][ 3 ].add(
							resolve(
								0,
								newDefer,
								isFunction( onProgress ) ?
									onProgress :
									Identity,
								newDefer.notifyWith
							)
						);

						// fulfilled_handlers.add( ... )
						tuples[ 1 ][ 3 ].add(
							resolve(
								0,
								newDefer,
								isFunction( onFulfilled ) ?
									onFulfilled :
									Identity
							)
						);

						// rejected_handlers.add( ... )
						tuples[ 2 ][ 3 ].add(
							resolve(
								0,
								newDefer,
								isFunction( onRejected ) ?
									onRejected :
									Thrower
							)
						);
					} ).promise();
				},

				// Get a promise for this deferred
				// If obj is provided, the promise aspect is added to the object
				promise: function( obj ) {
					return obj != null ? jQuery.extend( obj, promise ) : promise;
				}
			},
			deferred = {};

		// Add list-specific methods
		jQuery.each( tuples, function( i, tuple ) {
			var list = tuple[ 2 ],
				stateString = tuple[ 5 ];

			// promise.progress = list.add
			// promise.done = list.add
			// promise.fail = list.add
			promise[ tuple[ 1 ] ] = list.add;

			// Handle state
			if ( stateString ) {
				list.add(
					function() {

						// state = "resolved" (i.e., fulfilled)
						// state = "rejected"
						state = stateString;
					},

					// rejected_callbacks.disable
					// fulfilled_callbacks.disable
					tuples[ 3 - i ][ 2 ].disable,

					// rejected_handlers.disable
					// fulfilled_handlers.disable
					tuples[ 3 - i ][ 3 ].disable,

					// progress_callbacks.lock
					tuples[ 0 ][ 2 ].lock,

					// progress_handlers.lock
					tuples[ 0 ][ 3 ].lock
				);
			}

			// progress_handlers.fire
			// fulfilled_handlers.fire
			// rejected_handlers.fire
			list.add( tuple[ 3 ].fire );

			// deferred.notify = function() { deferred.notifyWith(...) }
			// deferred.resolve = function() { deferred.resolveWith(...) }
			// deferred.reject = function() { deferred.rejectWith(...) }
			deferred[ tuple[ 0 ] ] = function() {
				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
				return this;
			};

			// deferred.notifyWith = list.fireWith
			// deferred.resolveWith = list.fireWith
			// deferred.rejectWith = list.fireWith
			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
		} );

		// Make the deferred a promise
		promise.promise( deferred );

		// Call given func if any
		if ( func ) {
			func.call( deferred, deferred );
		}

		// All done!
		return deferred;
	},

	// Deferred helper
	when: function( singleValue ) {
		var

			// count of uncompleted subordinates
			remaining = arguments.length,

			// count of unprocessed arguments
			i = remaining,

			// subordinate fulfillment data
			resolveContexts = Array( i ),
			resolveValues = slice.call( arguments ),

			// the master Deferred
			master = jQuery.Deferred(),

			// subordinate callback factory
			updateFunc = function( i ) {
				return function( value ) {
					resolveContexts[ i ] = this;
					resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
					if ( !( --remaining ) ) {
						master.resolveWith( resolveContexts, resolveValues );
					}
				};
			};

		// Single- and empty arguments are adopted like Promise.resolve
		if ( remaining <= 1 ) {
			adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject,
				!remaining );

			// Use .then() to unwrap secondary thenables (cf. gh-3000)
			if ( master.state() === "pending" ||
				isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {

				return master.then();
			}
		}

		// Multiple arguments are aggregated like Promise.all array elements
		while ( i-- ) {
			adoptValue( resolveValues[ i ], updateFunc( i ), master.reject );
		}

		return master.promise();
	}
} );


// These usually indicate a programmer mistake during development,
// warn about them ASAP rather than swallowing them by default.
var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;

jQuery.Deferred.exceptionHook = function( error, stack ) {

	// Support: IE 8 - 9 only
	// Console exists when dev tools are open, which can happen at any time
	if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
		window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
	}
};




jQuery.readyException = function( error ) {
	window.setTimeout( function() {
		throw error;
	} );
};




// The deferred used on DOM ready
var readyList = jQuery.Deferred();

jQuery.fn.ready = function( fn ) {

	readyList
		.then( fn )

		// Wrap jQuery.readyException in a function so that the lookup
		// happens at the time of error handling instead of callback
		// registration.
		.catch( function( error ) {
			jQuery.readyException( error );
		} );

	return this;
};

jQuery.extend( {

	// Is the DOM ready to be used? Set to true once it occurs.
	isReady: false,

	// A counter to track how many items to wait for before
	// the ready event fires. See #6781
	readyWait: 1,

	// Handle when the DOM is ready
	ready: function( wait ) {

		// Abort if there are pending holds or we're already ready
		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
			return;
		}

		// Remember that the DOM is ready
		jQuery.isReady = true;

		// If a normal DOM Ready event fired, decrement, and wait if need be
		if ( wait !== true && --jQuery.readyWait > 0 ) {
			return;
		}

		// If there are functions bound, to execute
		readyList.resolveWith( document, [ jQuery ] );
	}
} );

jQuery.ready.then = readyList.then;

// The ready event handler and self cleanup method
function completed() {
	document.removeEventListener( "DOMContentLoaded", completed );
	window.removeEventListener( "load", completed );
	jQuery.ready();
}

// Catch cases where $(document).ready() is called
// after the browser event has already occurred.
// Support: IE <=9 - 10 only
// Older IE sometimes signals "interactive" too soon
if ( document.readyState === "complete" ||
	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {

	// Handle it asynchronously to allow scripts the opportunity to delay ready
	window.setTimeout( jQuery.ready );

} else {

	// Use the handy event callback
	document.addEventListener( "DOMContentLoaded", completed );

	// A fallback to window.onload, that will always work
	window.addEventListener( "load", completed );
}




// Multifunctional method to get and set values of a collection
// The value/s can optionally be executed if it's a function
var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
	var i = 0,
		len = elems.length,
		bulk = key == null;

	// Sets many values
	if ( toType( key ) === "object" ) {
		chainable = true;
		for ( i in key ) {
			access( elems, fn, i, key[ i ], true, emptyGet, raw );
		}

	// Sets one value
	} else if ( value !== undefined ) {
		chainable = true;

		if ( !isFunction( value ) ) {
			raw = true;
		}

		if ( bulk ) {

			// Bulk operations run against the entire set
			if ( raw ) {
				fn.call( elems, value );
				fn = null;

			// ...except when executing function values
			} else {
				bulk = fn;
				fn = function( elem, key, value ) {
					return bulk.call( jQuery( elem ), value );
				};
			}
		}

		if ( fn ) {
			for ( ; i < len; i++ ) {
				fn(
					elems[ i ], key, raw ?
					value :
					value.call( elems[ i ], i, fn( elems[ i ], key ) )
				);
			}
		}
	}

	if ( chainable ) {
		return elems;
	}

	// Gets
	if ( bulk ) {
		return fn.call( elems );
	}

	return len ? fn( elems[ 0 ], key ) : emptyGet;
};


// Matches dashed string for camelizing
var rmsPrefix = /^-ms-/,
	rdashAlpha = /-([a-z])/g;

// Used by camelCase as callback to replace()
function fcamelCase( all, letter ) {
	return letter.toUpperCase();
}

// Convert dashed to camelCase; used by the css and data modules
// Support: IE <=9 - 11, Edge 12 - 15
// Microsoft forgot to hump their vendor prefix (#9572)
function camelCase( string ) {
	return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
}
var acceptData = function( owner ) {

	// Accepts only:
	//  - Node
	//    - Node.ELEMENT_NODE
	//    - Node.DOCUMENT_NODE
	//  - Object
	//    - Any
	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
};




function Data() {
	this.expando = jQuery.expando + Data.uid++;
}

Data.uid = 1;

Data.prototype = {

	cache: function( owner ) {

		// Check if the owner object already has a cache
		var value = owner[ this.expando ];

		// If not, create one
		if ( !value ) {
			value = {};

			// We can accept data for non-element nodes in modern browsers,
			// but we should not, see #8335.
			// Always return an empty object.
			if ( acceptData( owner ) ) {

				// If it is a node unlikely to be stringify-ed or looped over
				// use plain assignment
				if ( owner.nodeType ) {
					owner[ this.expando ] = value;

				// Otherwise secure it in a non-enumerable property
				// configurable must be true to allow the property to be
				// deleted when data is removed
				} else {
					Object.defineProperty( owner, this.expando, {
						value: value,
						configurable: true
					} );
				}
			}
		}

		return value;
	},
	set: function( owner, data, value ) {
		var prop,
			cache = this.cache( owner );

		// Handle: [ owner, key, value ] args
		// Always use camelCase key (gh-2257)
		if ( typeof data === "string" ) {
			cache[ camelCase( data ) ] = value;

		// Handle: [ owner, { properties } ] args
		} else {

			// Copy the properties one-by-one to the cache object
			for ( prop in data ) {
				cache[ camelCase( prop ) ] = data[ prop ];
			}
		}
		return cache;
	},
	get: function( owner, key ) {
		return key === undefined ?
			this.cache( owner ) :

			// Always use camelCase key (gh-2257)
			owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];
	},
	access: function( owner, key, value ) {

		// In cases where either:
		//
		//   1. No key was specified
		//   2. A string key was specified, but no value provided
		//
		// Take the "read" path and allow the get method to determine
		// which value to return, respectively either:
		//
		//   1. The entire cache object
		//   2. The data stored at the key
		//
		if ( key === undefined ||
				( ( key && typeof key === "string" ) && value === undefined ) ) {

			return this.get( owner, key );
		}

		// When the key is not a string, or both a key and value
		// are specified, set or extend (existing objects) with either:
		//
		//   1. An object of properties
		//   2. A key and value
		//
		this.set( owner, key, value );

		// Since the "set" path can have two possible entry points
		// return the expected data based on which path was taken[*]
		return value !== undefined ? value : key;
	},
	remove: function( owner, key ) {
		var i,
			cache = owner[ this.expando ];

		if ( cache === undefined ) {
			return;
		}

		if ( key !== undefined ) {

			// Support array or space separated string of keys
			if ( Array.isArray( key ) ) {

				// If key is an array of keys...
				// We always set camelCase keys, so remove that.
				key = key.map( camelCase );
			} else {
				key = camelCase( key );

				// If a key with the spaces exists, use it.
				// Otherwise, create an array by matching non-whitespace
				key = key in cache ?
					[ key ] :
					( key.match( rnothtmlwhite ) || [] );
			}

			i = key.length;

			while ( i-- ) {
				delete cache[ key[ i ] ];
			}
		}

		// Remove the expando if there's no more data
		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {

			// Support: Chrome <=35 - 45
			// Webkit & Blink performance suffers when deleting properties
			// from DOM nodes, so set to undefined instead
			// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
			if ( owner.nodeType ) {
				owner[ this.expando ] = undefined;
			} else {
				delete owner[ this.expando ];
			}
		}
	},
	hasData: function( owner ) {
		var cache = owner[ this.expando ];
		return cache !== undefined && !jQuery.isEmptyObject( cache );
	}
};
var dataPriv = new Data();

var dataUser = new Data();



//	Implementation Summary
//
//	1. Enforce API surface and semantic compatibility with 1.9.x branch
//	2. Improve the module's maintainability by reducing the storage
//		paths to a single mechanism.
//	3. Use the same single mechanism to support "private" and "user" data.
//	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
//	5. Avoid exposing implementation details on user objects (eg. expando properties)
//	6. Provide a clear path for implementation upgrade to WeakMap in 2014

var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
	rmultiDash = /[A-Z]/g;

function getData( data ) {
	if ( data === "true" ) {
		return true;
	}

	if ( data === "false" ) {
		return false;
	}

	if ( data === "null" ) {
		return null;
	}

	// Only convert to a number if it doesn't change the string
	if ( data === +data + "" ) {
		return +data;
	}

	if ( rbrace.test( data ) ) {
		return JSON.parse( data );
	}

	return data;
}

function dataAttr( elem, key, data ) {
	var name;

	// If nothing was found internally, try to fetch any
	// data from the HTML5 data-* attribute
	if ( data === undefined && elem.nodeType === 1 ) {
		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
		data = elem.getAttribute( name );

		if ( typeof data === "string" ) {
			try {
				data = getData( data );
			} catch ( e ) {}

			// Make sure we set the data so it isn't changed later
			dataUser.set( elem, key, data );
		} else {
			data = undefined;
		}
	}
	return data;
}

jQuery.extend( {
	hasData: function( elem ) {
		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
	},

	data: function( elem, name, data ) {
		return dataUser.access( elem, name, data );
	},

	removeData: function( elem, name ) {
		dataUser.remove( elem, name );
	},

	// TODO: Now that all calls to _data and _removeData have been replaced
	// with direct calls to dataPriv methods, these can be deprecated.
	_data: function( elem, name, data ) {
		return dataPriv.access( elem, name, data );
	},

	_removeData: function( elem, name ) {
		dataPriv.remove( elem, name );
	}
} );

jQuery.fn.extend( {
	data: function( key, value ) {
		var i, name, data,
			elem = this[ 0 ],
			attrs = elem && elem.attributes;

		// Gets all values
		if ( key === undefined ) {
			if ( this.length ) {
				data = dataUser.get( elem );

				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
					i = attrs.length;
					while ( i-- ) {

						// Support: IE 11 only
						// The attrs elements can be null (#14894)
						if ( attrs[ i ] ) {
							name = attrs[ i ].name;
							if ( name.indexOf( "data-" ) === 0 ) {
								name = camelCase( name.slice( 5 ) );
								dataAttr( elem, name, data[ name ] );
							}
						}
					}
					dataPriv.set( elem, "hasDataAttrs", true );
				}
			}

			return data;
		}

		// Sets multiple values
		if ( typeof key === "object" ) {
			return this.each( function() {
				dataUser.set( this, key );
			} );
		}

		return access( this, function( value ) {
			var data;

			// The calling jQuery object (element matches) is not empty
			// (and therefore has an element appears at this[ 0 ]) and the
			// `value` parameter was not undefined. An empty jQuery object
			// will result in `undefined` for elem = this[ 0 ] which will
			// throw an exception if an attempt to read a data cache is made.
			if ( elem && value === undefined ) {

				// Attempt to get data from the cache
				// The key will always be camelCased in Data
				data = dataUser.get( elem, key );
				if ( data !== undefined ) {
					return data;
				}

				// Attempt to "discover" the data in
				// HTML5 custom data-* attrs
				data = dataAttr( elem, key );
				if ( data !== undefined ) {
					return data;
				}

				// We tried really hard, but the data doesn't exist.
				return;
			}

			// Set the data...
			this.each( function() {

				// We always store the camelCased key
				dataUser.set( this, key, value );
			} );
		}, null, value, arguments.length > 1, null, true );
	},

	removeData: function( key ) {
		return this.each( function() {
			dataUser.remove( this, key );
		} );
	}
} );


jQuery.extend( {
	queue: function( elem, type, data ) {
		var queue;

		if ( elem ) {
			type = ( type || "fx" ) + "queue";
			queue = dataPriv.get( elem, type );

			// Speed up dequeue by getting out quickly if this is just a lookup
			if ( data ) {
				if ( !queue || Array.isArray( data ) ) {
					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
				} else {
					queue.push( data );
				}
			}
			return queue || [];
		}
	},

	dequeue: function( elem, type ) {
		type = type || "fx";

		var queue = jQuery.queue( elem, type ),
			startLength = queue.length,
			fn = queue.shift(),
			hooks = jQuery._queueHooks( elem, type ),
			next = function() {
				jQuery.dequeue( elem, type );
			};

		// If the fx queue is dequeued, always remove the progress sentinel
		if ( fn === "inprogress" ) {
			fn = queue.shift();
			startLength--;
		}

		if ( fn ) {

			// Add a progress sentinel to prevent the fx queue from being
			// automatically dequeued
			if ( type === "fx" ) {
				queue.unshift( "inprogress" );
			}

			// Clear up the last queue stop function
			delete hooks.stop;
			fn.call( elem, next, hooks );
		}

		if ( !startLength && hooks ) {
			hooks.empty.fire();
		}
	},

	// Not public - generate a queueHooks object, or return the current one
	_queueHooks: function( elem, type ) {
		var key = type + "queueHooks";
		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
			empty: jQuery.Callbacks( "once memory" ).add( function() {
				dataPriv.remove( elem, [ type + "queue", key ] );
			} )
		} );
	}
} );

jQuery.fn.extend( {
	queue: function( type, data ) {
		var setter = 2;

		if ( typeof type !== "string" ) {
			data = type;
			type = "fx";
			setter--;
		}

		if ( arguments.length < setter ) {
			return jQuery.queue( this[ 0 ], type );
		}

		return data === undefined ?
			this :
			this.each( function() {
				var queue = jQuery.queue( this, type, data );

				// Ensure a hooks for this queue
				jQuery._queueHooks( this, type );

				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
					jQuery.dequeue( this, type );
				}
			} );
	},
	dequeue: function( type ) {
		return this.each( function() {
			jQuery.dequeue( this, type );
		} );
	},
	clearQueue: function( type ) {
		return this.queue( type || "fx", [] );
	},

	// Get a promise resolved when queues of a certain type
	// are emptied (fx is the type by default)
	promise: function( type, obj ) {
		var tmp,
			count = 1,
			defer = jQuery.Deferred(),
			elements = this,
			i = this.length,
			resolve = function() {
				if ( !( --count ) ) {
					defer.resolveWith( elements, [ elements ] );
				}
			};

		if ( typeof type !== "string" ) {
			obj = type;
			type = undefined;
		}
		type = type || "fx";

		while ( i-- ) {
			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
			if ( tmp && tmp.empty ) {
				count++;
				tmp.empty.add( resolve );
			}
		}
		resolve();
		return defer.promise( obj );
	}
} );
var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;

var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );


var cssExpand = [ "Top", "Right", "Bottom", "Left" ];

var isHiddenWithinTree = function( elem, el ) {

		// isHiddenWithinTree might be called from jQuery#filter function;
		// in that case, element will be second argument
		elem = el || elem;

		// Inline style trumps all
		return elem.style.display === "none" ||
			elem.style.display === "" &&

			// Otherwise, check computed style
			// Support: Firefox <=43 - 45
			// Disconnected elements can have computed display: none, so first confirm that elem is
			// in the document.
			jQuery.contains( elem.ownerDocument, elem ) &&

			jQuery.css( elem, "display" ) === "none";
	};

var swap = function( elem, options, callback, args ) {
	var ret, name,
		old = {};

	// Remember the old values, and insert the new ones
	for ( name in options ) {
		old[ name ] = elem.style[ name ];
		elem.style[ name ] = options[ name ];
	}

	ret = callback.apply( elem, args || [] );

	// Revert the old values
	for ( name in options ) {
		elem.style[ name ] = old[ name ];
	}

	return ret;
};




function adjustCSS( elem, prop, valueParts, tween ) {
	var adjusted, scale,
		maxIterations = 20,
		currentValue = tween ?
			function() {
				return tween.cur();
			} :
			function() {
				return jQuery.css( elem, prop, "" );
			},
		initial = currentValue(),
		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),

		// Starting value computation is required for potential unit mismatches
		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
			rcssNum.exec( jQuery.css( elem, prop ) );

	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {

		// Support: Firefox <=54
		// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
		initial = initial / 2;

		// Trust units reported by jQuery.css
		unit = unit || initialInUnit[ 3 ];

		// Iteratively approximate from a nonzero starting point
		initialInUnit = +initial || 1;

		while ( maxIterations-- ) {

			// Evaluate and update our best guess (doubling guesses that zero out).
			// Finish if the scale equals or crosses 1 (making the old*new product non-positive).
			jQuery.style( elem, prop, initialInUnit + unit );
			if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {
				maxIterations = 0;
			}
			initialInUnit = initialInUnit / scale;

		}

		initialInUnit = initialInUnit * 2;
		jQuery.style( elem, prop, initialInUnit + unit );

		// Make sure we update the tween properties later on
		valueParts = valueParts || [];
	}

	if ( valueParts ) {
		initialInUnit = +initialInUnit || +initial || 0;

		// Apply relative offset (+=/-=) if specified
		adjusted = valueParts[ 1 ] ?
			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
			+valueParts[ 2 ];
		if ( tween ) {
			tween.unit = unit;
			tween.start = initialInUnit;
			tween.end = adjusted;
		}
	}
	return adjusted;
}


var defaultDisplayMap = {};

function getDefaultDisplay( elem ) {
	var temp,
		doc = elem.ownerDocument,
		nodeName = elem.nodeName,
		display = defaultDisplayMap[ nodeName ];

	if ( display ) {
		return display;
	}

	temp = doc.body.appendChild( doc.createElement( nodeName ) );
	display = jQuery.css( temp, "display" );

	temp.parentNode.removeChild( temp );

	if ( display === "none" ) {
		display = "block";
	}
	defaultDisplayMap[ nodeName ] = display;

	return display;
}

function showHide( elements, show ) {
	var display, elem,
		values = [],
		index = 0,
		length = elements.length;

	// Determine new display value for elements that need to change
	for ( ; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}

		display = elem.style.display;
		if ( show ) {

			// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
			// check is required in this first loop unless we have a nonempty display value (either
			// inline or about-to-be-restored)
			if ( display === "none" ) {
				values[ index ] = dataPriv.get( elem, "display" ) || null;
				if ( !values[ index ] ) {
					elem.style.display = "";
				}
			}
			if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
				values[ index ] = getDefaultDisplay( elem );
			}
		} else {
			if ( display !== "none" ) {
				values[ index ] = "none";

				// Remember what we're overwriting
				dataPriv.set( elem, "display", display );
			}
		}
	}

	// Set the display of the elements in a second loop to avoid constant reflow
	for ( index = 0; index < length; index++ ) {
		if ( values[ index ] != null ) {
			elements[ index ].style.display = values[ index ];
		}
	}

	return elements;
}

jQuery.fn.extend( {
	show: function() {
		return showHide( this, true );
	},
	hide: function() {
		return showHide( this );
	},
	toggle: function( state ) {
		if ( typeof state === "boolean" ) {
			return state ? this.show() : this.hide();
		}

		return this.each( function() {
			if ( isHiddenWithinTree( this ) ) {
				jQuery( this ).show();
			} else {
				jQuery( this ).hide();
			}
		} );
	}
} );
var rcheckableType = ( /^(?:checkbox|radio)$/i );

var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );

var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i );



// We have to close these tags to support XHTML (#13200)
var wrapMap = {

	// Support: IE <=9 only
	option: [ 1, "<select multiple='multiple'>", "</select>" ],

	// XHTML parsers do not magically insert elements in the
	// same way that tag soup parsers do. So we cannot shorten
	// this by omitting <tbody> or other required elements.
	thead: [ 1, "<table>", "</table>" ],
	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],

	_default: [ 0, "", "" ]
};

// Support: IE <=9 only
wrapMap.optgroup = wrapMap.option;

wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;


function getAll( context, tag ) {

	// Support: IE <=9 - 11 only
	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
	var ret;

	if ( typeof context.getElementsByTagName !== "undefined" ) {
		ret = context.getElementsByTagName( tag || "*" );

	} else if ( typeof context.querySelectorAll !== "undefined" ) {
		ret = context.querySelectorAll( tag || "*" );

	} else {
		ret = [];
	}

	if ( tag === undefined || tag && nodeName( context, tag ) ) {
		return jQuery.merge( [ context ], ret );
	}

	return ret;
}


// Mark scripts as having already been evaluated
function setGlobalEval( elems, refElements ) {
	var i = 0,
		l = elems.length;

	for ( ; i < l; i++ ) {
		dataPriv.set(
			elems[ i ],
			"globalEval",
			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
		);
	}
}


var rhtml = /<|&#?\w+;/;

function buildFragment( elems, context, scripts, selection, ignored ) {
	var elem, tmp, tag, wrap, contains, j,
		fragment = context.createDocumentFragment(),
		nodes = [],
		i = 0,
		l = elems.length;

	for ( ; i < l; i++ ) {
		elem = elems[ i ];

		if ( elem || elem === 0 ) {

			// Add nodes directly
			if ( toType( elem ) === "object" ) {

				// Support: Android <=4.0 only, PhantomJS 1 only
				// push.apply(_, arraylike) throws on ancient WebKit
				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

			// Convert non-html into a text node
			} else if ( !rhtml.test( elem ) ) {
				nodes.push( context.createTextNode( elem ) );

			// Convert html into DOM nodes
			} else {
				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );

				// Deserialize a standard representation
				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
				wrap = wrapMap[ tag ] || wrapMap._default;
				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];

				// Descend through wrappers to the right content
				j = wrap[ 0 ];
				while ( j-- ) {
					tmp = tmp.lastChild;
				}

				// Support: Android <=4.0 only, PhantomJS 1 only
				// push.apply(_, arraylike) throws on ancient WebKit
				jQuery.merge( nodes, tmp.childNodes );

				// Remember the top-level container
				tmp = fragment.firstChild;

				// Ensure the created nodes are orphaned (#12392)
				tmp.textContent = "";
			}
		}
	}

	// Remove wrapper from fragment
	fragment.textContent = "";

	i = 0;
	while ( ( elem = nodes[ i++ ] ) ) {

		// Skip elements already in the context collection (trac-4087)
		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
			if ( ignored ) {
				ignored.push( elem );
			}
			continue;
		}

		contains = jQuery.contains( elem.ownerDocument, elem );

		// Append to fragment
		tmp = getAll( fragment.appendChild( elem ), "script" );

		// Preserve script evaluation history
		if ( contains ) {
			setGlobalEval( tmp );
		}

		// Capture executables
		if ( scripts ) {
			j = 0;
			while ( ( elem = tmp[ j++ ] ) ) {
				if ( rscriptType.test( elem.type || "" ) ) {
					scripts.push( elem );
				}
			}
		}
	}

	return fragment;
}


( function() {
	var fragment = document.createDocumentFragment(),
		div = fragment.appendChild( document.createElement( "div" ) ),
		input = document.createElement( "input" );

	// Support: Android 4.0 - 4.3 only
	// Check state lost if the name is set (#11217)
	// Support: Windows Web Apps (WWA)
	// `name` and `type` must use .setAttribute for WWA (#14901)
	input.setAttribute( "type", "radio" );
	input.setAttribute( "checked", "checked" );
	input.setAttribute( "name", "t" );

	div.appendChild( input );

	// Support: Android <=4.1 only
	// Older WebKit doesn't clone checked state correctly in fragments
	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;

	// Support: IE <=11 only
	// Make sure textarea (and checkbox) defaultValue is properly cloned
	div.innerHTML = "<textarea>x</textarea>";
	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
} )();
var documentElement = document.documentElement;



var
	rkeyEvent = /^key/,
	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;

function returnTrue() {
	return true;
}

function returnFalse() {
	return false;
}

// Support: IE <=9 only
// See #13393 for more info
function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

function on( elem, types, selector, data, fn, one ) {
	var origFn, type;

	// Types can be a map of types/handlers
	if ( typeof types === "object" ) {

		// ( types-Object, selector, data )
		if ( typeof selector !== "string" ) {

			// ( types-Object, data )
			data = data || selector;
			selector = undefined;
		}
		for ( type in types ) {
			on( elem, type, selector, data, types[ type ], one );
		}
		return elem;
	}

	if ( data == null && fn == null ) {

		// ( types, fn )
		fn = selector;
		data = selector = undefined;
	} else if ( fn == null ) {
		if ( typeof selector === "string" ) {

			// ( types, selector, fn )
			fn = data;
			data = undefined;
		} else {

			// ( types, data, fn )
			fn = data;
			data = selector;
			selector = undefined;
		}
	}
	if ( fn === false ) {
		fn = returnFalse;
	} else if ( !fn ) {
		return elem;
	}

	if ( one === 1 ) {
		origFn = fn;
		fn = function( event ) {

			// Can use an empty set, since event contains the info
			jQuery().off( event );
			return origFn.apply( this, arguments );
		};

		// Use same guid so caller can remove using origFn
		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
	}
	return elem.each( function() {
		jQuery.event.add( this, types, fn, data, selector );
	} );
}

/*
 * Helper functions for managing events -- not part of the public interface.
 * Props to Dean Edwards' addEvent library for many of the ideas.
 */
jQuery.event = {

	global: {},

	add: function( elem, types, handler, data, selector ) {

		var handleObjIn, eventHandle, tmp,
			events, t, handleObj,
			special, handlers, type, namespaces, origType,
			elemData = dataPriv.get( elem );

		// Don't attach events to noData or text/comment nodes (but allow plain objects)
		if ( !elemData ) {
			return;
		}

		// Caller can pass in an object of custom data in lieu of the handler
		if ( handler.handler ) {
			handleObjIn = handler;
			handler = handleObjIn.handler;
			selector = handleObjIn.selector;
		}

		// Ensure that invalid selectors throw exceptions at attach time
		// Evaluate against documentElement in case elem is a non-element node (e.g., document)
		if ( selector ) {
			jQuery.find.matchesSelector( documentElement, selector );
		}

		// Make sure that the handler has a unique ID, used to find/remove it later
		if ( !handler.guid ) {
			handler.guid = jQuery.guid++;
		}

		// Init the element's event structure and main handler, if this is the first
		if ( !( events = elemData.events ) ) {
			events = elemData.events = {};
		}
		if ( !( eventHandle = elemData.handle ) ) {
			eventHandle = elemData.handle = function( e ) {

				// Discard the second event of a jQuery.event.trigger() and
				// when an event is called after a page has unloaded
				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
			};
		}

		// Handle multiple events separated by a space
		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// There *must* be a type, no attaching namespace-only handlers
			if ( !type ) {
				continue;
			}

			// If event changes its type, use the special event handlers for the changed type
			special = jQuery.event.special[ type ] || {};

			// If selector defined, determine special event api type, otherwise given type
			type = ( selector ? special.delegateType : special.bindType ) || type;

			// Update special based on newly reset type
			special = jQuery.event.special[ type ] || {};

			// handleObj is passed to all event handlers
			handleObj = jQuery.extend( {
				type: type,
				origType: origType,
				data: data,
				handler: handler,
				guid: handler.guid,
				selector: selector,
				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
				namespace: namespaces.join( "." )
			}, handleObjIn );

			// Init the event handler queue if we're the first
			if ( !( handlers = events[ type ] ) ) {
				handlers = events[ type ] = [];
				handlers.delegateCount = 0;

				// Only use addEventListener if the special events handler returns false
				if ( !special.setup ||
					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {

					if ( elem.addEventListener ) {
						elem.addEventListener( type, eventHandle );
					}
				}
			}

			if ( special.add ) {
				special.add.call( elem, handleObj );

				if ( !handleObj.handler.guid ) {
					handleObj.handler.guid = handler.guid;
				}
			}

			// Add to the element's handler list, delegates in front
			if ( selector ) {
				handlers.splice( handlers.delegateCount++, 0, handleObj );
			} else {
				handlers.push( handleObj );
			}

			// Keep track of which events have ever been used, for event optimization
			jQuery.event.global[ type ] = true;
		}

	},

	// Detach an event or set of events from an element
	remove: function( elem, types, handler, selector, mappedTypes ) {

		var j, origCount, tmp,
			events, t, handleObj,
			special, handlers, type, namespaces, origType,
			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );

		if ( !elemData || !( events = elemData.events ) ) {
			return;
		}

		// Once for each type.namespace in types; type may be omitted
		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// Unbind all events (on this namespace, if provided) for the element
			if ( !type ) {
				for ( type in events ) {
					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
				}
				continue;
			}

			special = jQuery.event.special[ type ] || {};
			type = ( selector ? special.delegateType : special.bindType ) || type;
			handlers = events[ type ] || [];
			tmp = tmp[ 2 ] &&
				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );

			// Remove matching events
			origCount = j = handlers.length;
			while ( j-- ) {
				handleObj = handlers[ j ];

				if ( ( mappedTypes || origType === handleObj.origType ) &&
					( !handler || handler.guid === handleObj.guid ) &&
					( !tmp || tmp.test( handleObj.namespace ) ) &&
					( !selector || selector === handleObj.selector ||
						selector === "**" && handleObj.selector ) ) {
					handlers.splice( j, 1 );

					if ( handleObj.selector ) {
						handlers.delegateCount--;
					}
					if ( special.remove ) {
						special.remove.call( elem, handleObj );
					}
				}
			}

			// Remove generic event handler if we removed something and no more handlers exist
			// (avoids potential for endless recursion during removal of special event handlers)
			if ( origCount && !handlers.length ) {
				if ( !special.teardown ||
					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {

					jQuery.removeEvent( elem, type, elemData.handle );
				}

				delete events[ type ];
			}
		}

		// Remove data and the expando if it's no longer used
		if ( jQuery.isEmptyObject( events ) ) {
			dataPriv.remove( elem, "handle events" );
		}
	},

	dispatch: function( nativeEvent ) {

		// Make a writable jQuery.Event from the native event object
		var event = jQuery.event.fix( nativeEvent );

		var i, j, ret, matched, handleObj, handlerQueue,
			args = new Array( arguments.length ),
			handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
			special = jQuery.event.special[ event.type ] || {};

		// Use the fix-ed jQuery.Event rather than the (read-only) native event
		args[ 0 ] = event;

		for ( i = 1; i < arguments.length; i++ ) {
			args[ i ] = arguments[ i ];
		}

		event.delegateTarget = this;

		// Call the preDispatch hook for the mapped type, and let it bail if desired
		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
			return;
		}

		// Determine handlers
		handlerQueue = jQuery.event.handlers.call( this, event, handlers );

		// Run delegates first; they may want to stop propagation beneath us
		i = 0;
		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
			event.currentTarget = matched.elem;

			j = 0;
			while ( ( handleObj = matched.handlers[ j++ ] ) &&
				!event.isImmediatePropagationStopped() ) {

				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
				// a subset or equal to those in the bound event (both can have no namespace).
				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {

					event.handleObj = handleObj;
					event.data = handleObj.data;

					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
						handleObj.handler ).apply( matched.elem, args );

					if ( ret !== undefined ) {
						if ( ( event.result = ret ) === false ) {
							event.preventDefault();
							event.stopPropagation();
						}
					}
				}
			}
		}

		// Call the postDispatch hook for the mapped type
		if ( special.postDispatch ) {
			special.postDispatch.call( this, event );
		}

		return event.result;
	},

	handlers: function( event, handlers ) {
		var i, handleObj, sel, matchedHandlers, matchedSelectors,
			handlerQueue = [],
			delegateCount = handlers.delegateCount,
			cur = event.target;

		// Find delegate handlers
		if ( delegateCount &&

			// Support: IE <=9
			// Black-hole SVG <use> instance trees (trac-13180)
			cur.nodeType &&

			// Support: Firefox <=42
			// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
			// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
			// Support: IE 11 only
			// ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
			!( event.type === "click" && event.button >= 1 ) ) {

			for ( ; cur !== this; cur = cur.parentNode || this ) {

				// Don't check non-elements (#13208)
				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
				if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
					matchedHandlers = [];
					matchedSelectors = {};
					for ( i = 0; i < delegateCount; i++ ) {
						handleObj = handlers[ i ];

						// Don't conflict with Object.prototype properties (#13203)
						sel = handleObj.selector + " ";

						if ( matchedSelectors[ sel ] === undefined ) {
							matchedSelectors[ sel ] = handleObj.needsContext ?
								jQuery( sel, this ).index( cur ) > -1 :
								jQuery.find( sel, this, null, [ cur ] ).length;
						}
						if ( matchedSelectors[ sel ] ) {
							matchedHandlers.push( handleObj );
						}
					}
					if ( matchedHandlers.length ) {
						handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
					}
				}
			}
		}

		// Add the remaining (directly-bound) handlers
		cur = this;
		if ( delegateCount < handlers.length ) {
			handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
		}

		return handlerQueue;
	},

	addProp: function( name, hook ) {
		Object.defineProperty( jQuery.Event.prototype, name, {
			enumerable: true,
			configurable: true,

			get: isFunction( hook ) ?
				function() {
					if ( this.originalEvent ) {
							return hook( this.originalEvent );
					}
				} :
				function() {
					if ( this.originalEvent ) {
							return this.originalEvent[ name ];
					}
				},

			set: function( value ) {
				Object.defineProperty( this, name, {
					enumerable: true,
					configurable: true,
					writable: true,
					value: value
				} );
			}
		} );
	},

	fix: function( originalEvent ) {
		return originalEvent[ jQuery.expando ] ?
			originalEvent :
			new jQuery.Event( originalEvent );
	},

	special: {
		load: {

			// Prevent triggered image.load events from bubbling to window.load
			noBubble: true
		},
		focus: {

			// Fire native event if possible so blur/focus sequence is correct
			trigger: function() {
				if ( this !== safeActiveElement() && this.focus ) {
					this.focus();
					return false;
				}
			},
			delegateType: "focusin"
		},
		blur: {
			trigger: function() {
				if ( this === safeActiveElement() && this.blur ) {
					this.blur();
					return false;
				}
			},
			delegateType: "focusout"
		},
		click: {

			// For checkbox, fire native event so checked state will be right
			trigger: function() {
				if ( this.type === "checkbox" && this.click && nodeName( this, "input" ) ) {
					this.click();
					return false;
				}
			},

			// For cross-browser consistency, don't fire native .click() on links
			_default: function( event ) {
				return nodeName( event.target, "a" );
			}
		},

		beforeunload: {
			postDispatch: function( event ) {

				// Support: Firefox 20+
				// Firefox doesn't alert if the returnValue field is not set.
				if ( event.result !== undefined && event.originalEvent ) {
					event.originalEvent.returnValue = event.result;
				}
			}
		}
	}
};

jQuery.removeEvent = function( elem, type, handle ) {

	// This "if" is needed for plain objects
	if ( elem.removeEventListener ) {
		elem.removeEventListener( type, handle );
	}
};

jQuery.Event = function( src, props ) {

	// Allow instantiation without the 'new' keyword
	if ( !( this instanceof jQuery.Event ) ) {
		return new jQuery.Event( src, props );
	}

	// Event object
	if ( src && src.type ) {
		this.originalEvent = src;
		this.type = src.type;

		// Events bubbling up the document may have been marked as prevented
		// by a handler lower down the tree; reflect the correct value.
		this.isDefaultPrevented = src.defaultPrevented ||
				src.defaultPrevented === undefined &&

				// Support: Android <=2.3 only
				src.returnValue === false ?
			returnTrue :
			returnFalse;

		// Create target properties
		// Support: Safari <=6 - 7 only
		// Target should not be a text node (#504, #13143)
		this.target = ( src.target && src.target.nodeType === 3 ) ?
			src.target.parentNode :
			src.target;

		this.currentTarget = src.currentTarget;
		this.relatedTarget = src.relatedTarget;

	// Event type
	} else {
		this.type = src;
	}

	// Put explicitly provided properties onto the event object
	if ( props ) {
		jQuery.extend( this, props );
	}

	// Create a timestamp if incoming event doesn't have one
	this.timeStamp = src && src.timeStamp || Date.now();

	// Mark it as fixed
	this[ jQuery.expando ] = true;
};

// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
	constructor: jQuery.Event,
	isDefaultPrevented: returnFalse,
	isPropagationStopped: returnFalse,
	isImmediatePropagationStopped: returnFalse,
	isSimulated: false,

	preventDefault: function() {
		var e = this.originalEvent;

		this.isDefaultPrevented = returnTrue;

		if ( e && !this.isSimulated ) {
			e.preventDefault();
		}
	},
	stopPropagation: function() {
		var e = this.originalEvent;

		this.isPropagationStopped = returnTrue;

		if ( e && !this.isSimulated ) {
			e.stopPropagation();
		}
	},
	stopImmediatePropagation: function() {
		var e = this.originalEvent;

		this.isImmediatePropagationStopped = returnTrue;

		if ( e && !this.isSimulated ) {
			e.stopImmediatePropagation();
		}

		this.stopPropagation();
	}
};

// Includes all common event props including KeyEvent and MouseEvent specific props
jQuery.each( {
	altKey: true,
	bubbles: true,
	cancelable: true,
	changedTouches: true,
	ctrlKey: true,
	detail: true,
	eventPhase: true,
	metaKey: true,
	pageX: true,
	pageY: true,
	shiftKey: true,
	view: true,
	"char": true,
	charCode: true,
	key: true,
	keyCode: true,
	button: true,
	buttons: true,
	clientX: true,
	clientY: true,
	offsetX: true,
	offsetY: true,
	pointerId: true,
	pointerType: true,
	screenX: true,
	screenY: true,
	targetTouches: true,
	toElement: true,
	touches: true,

	which: function( event ) {
		var button = event.button;

		// Add which for key events
		if ( event.which == null && rkeyEvent.test( event.type ) ) {
			return event.charCode != null ? event.charCode : event.keyCode;
		}

		// Add which for click: 1 === left; 2 === middle; 3 === right
		if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
			if ( button & 1 ) {
				return 1;
			}

			if ( button & 2 ) {
				return 3;
			}

			if ( button & 4 ) {
				return 2;
			}

			return 0;
		}

		return event.which;
	}
}, jQuery.event.addProp );

// Create mouseenter/leave events using mouseover/out and event-time checks
// so that event delegation works in jQuery.
// Do the same for pointerenter/pointerleave and pointerover/pointerout
//
// Support: Safari 7 only
// Safari sends mouseenter too often; see:
// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
// for the description of the bug (it existed in older Chrome versions as well).
jQuery.each( {
	mouseenter: "mouseover",
	mouseleave: "mouseout",
	pointerenter: "pointerover",
	pointerleave: "pointerout"
}, function( orig, fix ) {
	jQuery.event.special[ orig ] = {
		delegateType: fix,
		bindType: fix,

		handle: function( event ) {
			var ret,
				target = this,
				related = event.relatedTarget,
				handleObj = event.handleObj;

			// For mouseenter/leave call the handler if related is outside the target.
			// NB: No relatedTarget if the mouse left/entered the browser window
			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
				event.type = handleObj.origType;
				ret = handleObj.handler.apply( this, arguments );
				event.type = fix;
			}
			return ret;
		}
	};
} );

jQuery.fn.extend( {

	on: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn );
	},
	one: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn, 1 );
	},
	off: function( types, selector, fn ) {
		var handleObj, type;
		if ( types && types.preventDefault && types.handleObj ) {

			// ( event )  dispatched jQuery.Event
			handleObj = types.handleObj;
			jQuery( types.delegateTarget ).off(
				handleObj.namespace ?
					handleObj.origType + "." + handleObj.namespace :
					handleObj.origType,
				handleObj.selector,
				handleObj.handler
			);
			return this;
		}
		if ( typeof types === "object" ) {

			// ( types-object [, selector] )
			for ( type in types ) {
				this.off( type, selector, types[ type ] );
			}
			return this;
		}
		if ( selector === false || typeof selector === "function" ) {

			// ( types [, fn] )
			fn = selector;
			selector = undefined;
		}
		if ( fn === false ) {
			fn = returnFalse;
		}
		return this.each( function() {
			jQuery.event.remove( this, types, fn, selector );
		} );
	}
} );


var

	/* eslint-disable max-len */

	// See https://github.com/eslint/eslint/issues/3229
	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,

	/* eslint-enable */

	// Support: IE <=10 - 11, Edge 12 - 13 only
	// In IE/Edge using regex groups here causes severe slowdowns.
	// See https://connect.microsoft.com/IE/feedback/details/1736512/
	rnoInnerhtml = /<script|<style|<link/i,

	// checked="checked" or checked
	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;

// Prefer a tbody over its parent table for containing new rows
function manipulationTarget( elem, content ) {
	if ( nodeName( elem, "table" ) &&
		nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {

		return jQuery( elem ).children( "tbody" )[ 0 ] || elem;
	}

	return elem;
}

// Replace/restore the type attribute of script elements for safe DOM manipulation
function disableScript( elem ) {
	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
	return elem;
}
function restoreScript( elem ) {
	if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) {
		elem.type = elem.type.slice( 5 );
	} else {
		elem.removeAttribute( "type" );
	}

	return elem;
}

function cloneCopyEvent( src, dest ) {
	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;

	if ( dest.nodeType !== 1 ) {
		return;
	}

	// 1. Copy private data: events, handlers, etc.
	if ( dataPriv.hasData( src ) ) {
		pdataOld = dataPriv.access( src );
		pdataCur = dataPriv.set( dest, pdataOld );
		events = pdataOld.events;

		if ( events ) {
			delete pdataCur.handle;
			pdataCur.events = {};

			for ( type in events ) {
				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
					jQuery.event.add( dest, type, events[ type ][ i ] );
				}
			}
		}
	}

	// 2. Copy user data
	if ( dataUser.hasData( src ) ) {
		udataOld = dataUser.access( src );
		udataCur = jQuery.extend( {}, udataOld );

		dataUser.set( dest, udataCur );
	}
}

// Fix IE bugs, see support tests
function fixInput( src, dest ) {
	var nodeName = dest.nodeName.toLowerCase();

	// Fails to persist the checked state of a cloned checkbox or radio button.
	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
		dest.checked = src.checked;

	// Fails to return the selected option to the default selected state when cloning options
	} else if ( nodeName === "input" || nodeName === "textarea" ) {
		dest.defaultValue = src.defaultValue;
	}
}

function domManip( collection, args, callback, ignored ) {

	// Flatten any nested arrays
	args = concat.apply( [], args );

	var fragment, first, scripts, hasScripts, node, doc,
		i = 0,
		l = collection.length,
		iNoClone = l - 1,
		value = args[ 0 ],
		valueIsFunction = isFunction( value );

	// We can't cloneNode fragments that contain checked, in WebKit
	if ( valueIsFunction ||
			( l > 1 && typeof value === "string" &&
				!support.checkClone && rchecked.test( value ) ) ) {
		return collection.each( function( index ) {
			var self = collection.eq( index );
			if ( valueIsFunction ) {
				args[ 0 ] = value.call( this, index, self.html() );
			}
			domManip( self, args, callback, ignored );
		} );
	}

	if ( l ) {
		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
		first = fragment.firstChild;

		if ( fragment.childNodes.length === 1 ) {
			fragment = first;
		}

		// Require either new content or an interest in ignored elements to invoke the callback
		if ( first || ignored ) {
			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
			hasScripts = scripts.length;

			// Use the original fragment for the last item
			// instead of the first because it can end up
			// being emptied incorrectly in certain situations (#8070).
			for ( ; i < l; i++ ) {
				node = fragment;

				if ( i !== iNoClone ) {
					node = jQuery.clone( node, true, true );

					// Keep references to cloned scripts for later restoration
					if ( hasScripts ) {

						// Support: Android <=4.0 only, PhantomJS 1 only
						// push.apply(_, arraylike) throws on ancient WebKit
						jQuery.merge( scripts, getAll( node, "script" ) );
					}
				}

				callback.call( collection[ i ], node, i );
			}

			if ( hasScripts ) {
				doc = scripts[ scripts.length - 1 ].ownerDocument;

				// Reenable scripts
				jQuery.map( scripts, restoreScript );

				// Evaluate executable scripts on first document insertion
				for ( i = 0; i < hasScripts; i++ ) {
					node = scripts[ i ];
					if ( rscriptType.test( node.type || "" ) &&
						!dataPriv.access( node, "globalEval" ) &&
						jQuery.contains( doc, node ) ) {

						if ( node.src && ( node.type || "" ).toLowerCase()  !== "module" ) {

							// Optional AJAX dependency, but won't run scripts if not present
							if ( jQuery._evalUrl ) {
								jQuery._evalUrl( node.src );
							}
						} else {
							DOMEval( node.textContent.replace( rcleanScript, "" ), doc, node );
						}
					}
				}
			}
		}
	}

	return collection;
}

function remove( elem, selector, keepData ) {
	var node,
		nodes = selector ? jQuery.filter( selector, elem ) : elem,
		i = 0;

	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
		if ( !keepData && node.nodeType === 1 ) {
			jQuery.cleanData( getAll( node ) );
		}

		if ( node.parentNode ) {
			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
				setGlobalEval( getAll( node, "script" ) );
			}
			node.parentNode.removeChild( node );
		}
	}

	return elem;
}

jQuery.extend( {
	htmlPrefilter: function( html ) {
		return html.replace( rxhtmlTag, "<$1></$2>" );
	},

	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
		var i, l, srcElements, destElements,
			clone = elem.cloneNode( true ),
			inPage = jQuery.contains( elem.ownerDocument, elem );

		// Fix IE cloning issues
		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
				!jQuery.isXMLDoc( elem ) ) {

			// We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
			destElements = getAll( clone );
			srcElements = getAll( elem );

			for ( i = 0, l = srcElements.length; i < l; i++ ) {
				fixInput( srcElements[ i ], destElements[ i ] );
			}
		}

		// Copy the events from the original to the clone
		if ( dataAndEvents ) {
			if ( deepDataAndEvents ) {
				srcElements = srcElements || getAll( elem );
				destElements = destElements || getAll( clone );

				for ( i = 0, l = srcElements.length; i < l; i++ ) {
					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
				}
			} else {
				cloneCopyEvent( elem, clone );
			}
		}

		// Preserve script evaluation history
		destElements = getAll( clone, "script" );
		if ( destElements.length > 0 ) {
			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
		}

		// Return the cloned set
		return clone;
	},

	cleanData: function( elems ) {
		var data, elem, type,
			special = jQuery.event.special,
			i = 0;

		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
			if ( acceptData( elem ) ) {
				if ( ( data = elem[ dataPriv.expando ] ) ) {
					if ( data.events ) {
						for ( type in data.events ) {
							if ( special[ type ] ) {
								jQuery.event.remove( elem, type );

							// This is a shortcut to avoid jQuery.event.remove's overhead
							} else {
								jQuery.removeEvent( elem, type, data.handle );
							}
						}
					}

					// Support: Chrome <=35 - 45+
					// Assign undefined instead of using delete, see Data#remove
					elem[ dataPriv.expando ] = undefined;
				}
				if ( elem[ dataUser.expando ] ) {

					// Support: Chrome <=35 - 45+
					// Assign undefined instead of using delete, see Data#remove
					elem[ dataUser.expando ] = undefined;
				}
			}
		}
	}
} );

jQuery.fn.extend( {
	detach: function( selector ) {
		return remove( this, selector, true );
	},

	remove: function( selector ) {
		return remove( this, selector );
	},

	text: function( value ) {
		return access( this, function( value ) {
			return value === undefined ?
				jQuery.text( this ) :
				this.empty().each( function() {
					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
						this.textContent = value;
					}
				} );
		}, null, value, arguments.length );
	},

	append: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.appendChild( elem );
			}
		} );
	},

	prepend: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.insertBefore( elem, target.firstChild );
			}
		} );
	},

	before: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this );
			}
		} );
	},

	after: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this.nextSibling );
			}
		} );
	},

	empty: function() {
		var elem,
			i = 0;

		for ( ; ( elem = this[ i ] ) != null; i++ ) {
			if ( elem.nodeType === 1 ) {

				// Prevent memory leaks
				jQuery.cleanData( getAll( elem, false ) );

				// Remove any remaining nodes
				elem.textContent = "";
			}
		}

		return this;
	},

	clone: function( dataAndEvents, deepDataAndEvents ) {
		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;

		return this.map( function() {
			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
		} );
	},

	html: function( value ) {
		return access( this, function( value ) {
			var elem = this[ 0 ] || {},
				i = 0,
				l = this.length;

			if ( value === undefined && elem.nodeType === 1 ) {
				return elem.innerHTML;
			}

			// See if we can take a shortcut and just use innerHTML
			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {

				value = jQuery.htmlPrefilter( value );

				try {
					for ( ; i < l; i++ ) {
						elem = this[ i ] || {};

						// Remove element nodes and prevent memory leaks
						if ( elem.nodeType === 1 ) {
							jQuery.cleanData( getAll( elem, false ) );
							elem.innerHTML = value;
						}
					}

					elem = 0;

				// If using innerHTML throws an exception, use the fallback method
				} catch ( e ) {}
			}

			if ( elem ) {
				this.empty().append( value );
			}
		}, null, value, arguments.length );
	},

	replaceWith: function() {
		var ignored = [];

		// Make the changes, replacing each non-ignored context element with the new content
		return domManip( this, arguments, function( elem ) {
			var parent = this.parentNode;

			if ( jQuery.inArray( this, ignored ) < 0 ) {
				jQuery.cleanData( getAll( this ) );
				if ( parent ) {
					parent.replaceChild( elem, this );
				}
			}

		// Force callback invocation
		}, ignored );
	}
} );

jQuery.each( {
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function( name, original ) {
	jQuery.fn[ name ] = function( selector ) {
		var elems,
			ret = [],
			insert = jQuery( selector ),
			last = insert.length - 1,
			i = 0;

		for ( ; i <= last; i++ ) {
			elems = i === last ? this : this.clone( true );
			jQuery( insert[ i ] )[ original ]( elems );

			// Support: Android <=4.0 only, PhantomJS 1 only
			// .get() because push.apply(_, arraylike) throws on ancient WebKit
			push.apply( ret, elems.get() );
		}

		return this.pushStack( ret );
	};
} );
var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );

var getStyles = function( elem ) {

		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)
		// IE throws on elements created in popups
		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
		var view = elem.ownerDocument.defaultView;

		if ( !view || !view.opener ) {
			view = window;
		}

		return view.getComputedStyle( elem );
	};

var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" );



( function() {

	// Executing both pixelPosition & boxSizingReliable tests require only one layout
	// so they're executed at the same time to save the second computation.
	function computeStyleTests() {

		// This is a singleton, we need to execute it only once
		if ( !div ) {
			return;
		}

		container.style.cssText = "position:absolute;left:-11111px;width:60px;" +
			"margin-top:1px;padding:0;border:0";
		div.style.cssText =
			"position:relative;display:block;box-sizing:border-box;overflow:scroll;" +
			"margin:auto;border:1px;padding:1px;" +
			"width:60%;top:1%";
		documentElement.appendChild( container ).appendChild( div );

		var divStyle = window.getComputedStyle( div );
		pixelPositionVal = divStyle.top !== "1%";

		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
		reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;

		// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
		// Some styles come back with percentage values, even though they shouldn't
		div.style.right = "60%";
		pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;

		// Support: IE 9 - 11 only
		// Detect misreporting of content dimensions for box-sizing:border-box elements
		boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;

		// Support: IE 9 only
		// Detect overflow:scroll screwiness (gh-3699)
		div.style.position = "absolute";
		scrollboxSizeVal = div.offsetWidth === 36 || "absolute";

		documentElement.removeChild( container );

		// Nullify the div so it wouldn't be stored in the memory and
		// it will also be a sign that checks already performed
		div = null;
	}

	function roundPixelMeasures( measure ) {
		return Math.round( parseFloat( measure ) );
	}

	var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
		reliableMarginLeftVal,
		container = document.createElement( "div" ),
		div = document.createElement( "div" );

	// Finish early in limited (non-browser) environments
	if ( !div.style ) {
		return;
	}

	// Support: IE <=9 - 11 only
	// Style of cloned element affects source element cloned (#8908)
	div.style.backgroundClip = "content-box";
	div.cloneNode( true ).style.backgroundClip = "";
	support.clearCloneStyle = div.style.backgroundClip === "content-box";

	jQuery.extend( support, {
		boxSizingReliable: function() {
			computeStyleTests();
			return boxSizingReliableVal;
		},
		pixelBoxStyles: function() {
			computeStyleTests();
			return pixelBoxStylesVal;
		},
		pixelPosition: function() {
			computeStyleTests();
			return pixelPositionVal;
		},
		reliableMarginLeft: function() {
			computeStyleTests();
			return reliableMarginLeftVal;
		},
		scrollboxSize: function() {
			computeStyleTests();
			return scrollboxSizeVal;
		}
	} );
} )();


function curCSS( elem, name, computed ) {
	var width, minWidth, maxWidth, ret,

		// Support: Firefox 51+
		// Retrieving style before computed somehow
		// fixes an issue with getting wrong values
		// on detached elements
		style = elem.style;

	computed = computed || getStyles( elem );

	// getPropertyValue is needed for:
	//   .css('filter') (IE 9 only, #12537)
	//   .css('--customProperty) (#3144)
	if ( computed ) {
		ret = computed.getPropertyValue( name ) || computed[ name ];

		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
			ret = jQuery.style( elem, name );
		}

		// A tribute to the "awesome hack by Dean Edwards"
		// Android Browser returns percentage for some values,
		// but width seems to be reliably pixels.
		// This is against the CSSOM draft spec:
		// https://drafts.csswg.org/cssom/#resolved-values
		if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {

			// Remember the original values
			width = style.width;
			minWidth = style.minWidth;
			maxWidth = style.maxWidth;

			// Put in the new values to get a computed value out
			style.minWidth = style.maxWidth = style.width = ret;
			ret = computed.width;

			// Revert the changed values
			style.width = width;
			style.minWidth = minWidth;
			style.maxWidth = maxWidth;
		}
	}

	return ret !== undefined ?

		// Support: IE <=9 - 11 only
		// IE returns zIndex value as an integer.
		ret + "" :
		ret;
}


function addGetHookIf( conditionFn, hookFn ) {

	// Define the hook, we'll check on the first run if it's really needed.
	return {
		get: function() {
			if ( conditionFn() ) {

				// Hook not needed (or it's not possible to use it due
				// to missing dependency), remove it.
				delete this.get;
				return;
			}

			// Hook needed; redefine it so that the support test is not executed again.
			return ( this.get = hookFn ).apply( this, arguments );
		}
	};
}


var

	// Swappable if display is none or starts with table
	// except "table", "table-cell", or "table-caption"
	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
	rcustomProp = /^--/,
	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
	cssNormalTransform = {
		letterSpacing: "0",
		fontWeight: "400"
	},

	cssPrefixes = [ "Webkit", "Moz", "ms" ],
	emptyStyle = document.createElement( "div" ).style;

// Return a css property mapped to a potentially vendor prefixed property
function vendorPropName( name ) {

	// Shortcut for names that are not vendor prefixed
	if ( name in emptyStyle ) {
		return name;
	}

	// Check for vendor prefixed names
	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
		i = cssPrefixes.length;

	while ( i-- ) {
		name = cssPrefixes[ i ] + capName;
		if ( name in emptyStyle ) {
			return name;
		}
	}
}

// Return a property mapped along what jQuery.cssProps suggests or to
// a vendor prefixed property.
function finalPropName( name ) {
	var ret = jQuery.cssProps[ name ];
	if ( !ret ) {
		ret = jQuery.cssProps[ name ] = vendorPropName( name ) || name;
	}
	return ret;
}

function setPositiveNumber( elem, value, subtract ) {

	// Any relative (+/-) values have already been
	// normalized at this point
	var matches = rcssNum.exec( value );
	return matches ?

		// Guard against undefined "subtract", e.g., when used as in cssHooks
		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
		value;
}

function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {
	var i = dimension === "width" ? 1 : 0,
		extra = 0,
		delta = 0;

	// Adjustment may not be necessary
	if ( box === ( isBorderBox ? "border" : "content" ) ) {
		return 0;
	}

	for ( ; i < 4; i += 2 ) {

		// Both box models exclude margin
		if ( box === "margin" ) {
			delta += jQuery.css( elem, box + cssExpand[ i ], true, styles );
		}

		// If we get here with a content-box, we're seeking "padding" or "border" or "margin"
		if ( !isBorderBox ) {

			// Add padding
			delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );

			// For "border" or "margin", add border
			if ( box !== "padding" ) {
				delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );

			// But still keep track of it otherwise
			} else {
				extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}

		// If we get here with a border-box (content + padding + border), we're seeking "content" or
		// "padding" or "margin"
		} else {

			// For "content", subtract padding
			if ( box === "content" ) {
				delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
			}

			// For "content" or "padding", subtract border
			if ( box !== "margin" ) {
				delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		}
	}

	// Account for positive content-box scroll gutter when requested by providing computedVal
	if ( !isBorderBox && computedVal >= 0 ) {

		// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
		// Assuming integer scroll gutter, subtract the rest and round down
		delta += Math.max( 0, Math.ceil(
			elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
			computedVal -
			delta -
			extra -
			0.5
		) );
	}

	return delta;
}

function getWidthOrHeight( elem, dimension, extra ) {

	// Start with computed style
	var styles = getStyles( elem ),
		val = curCSS( elem, dimension, styles ),
		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
		valueIsBorderBox = isBorderBox;

	// Support: Firefox <=54
	// Return a confounding non-pixel value or feign ignorance, as appropriate.
	if ( rnumnonpx.test( val ) ) {
		if ( !extra ) {
			return val;
		}
		val = "auto";
	}

	// Check for style in case a browser which returns unreliable values
	// for getComputedStyle silently falls back to the reliable elem.style
	valueIsBorderBox = valueIsBorderBox &&
		( support.boxSizingReliable() || val === elem.style[ dimension ] );

	// Fall back to offsetWidth/offsetHeight when value is "auto"
	// This happens for inline elements with no explicit setting (gh-3571)
	// Support: Android <=4.1 - 4.3 only
	// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)
	if ( val === "auto" ||
		!parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) {

		val = elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ];

		// offsetWidth/offsetHeight provide border-box values
		valueIsBorderBox = true;
	}

	// Normalize "" and auto
	val = parseFloat( val ) || 0;

	// Adjust for the element's box model
	return ( val +
		boxModelAdjustment(
			elem,
			dimension,
			extra || ( isBorderBox ? "border" : "content" ),
			valueIsBorderBox,
			styles,

			// Provide the current computed size to request scroll gutter calculation (gh-3589)
			val
		)
	) + "px";
}

jQuery.extend( {

	// Add in style property hooks for overriding the default
	// behavior of getting and setting a style property
	cssHooks: {
		opacity: {
			get: function( elem, computed ) {
				if ( computed ) {

					// We should always get a number back from opacity
					var ret = curCSS( elem, "opacity" );
					return ret === "" ? "1" : ret;
				}
			}
		}
	},

	// Don't automatically add "px" to these possibly-unitless properties
	cssNumber: {
		"animationIterationCount": true,
		"columnCount": true,
		"fillOpacity": true,
		"flexGrow": true,
		"flexShrink": true,
		"fontWeight": true,
		"lineHeight": true,
		"opacity": true,
		"order": true,
		"orphans": true,
		"widows": true,
		"zIndex": true,
		"zoom": true
	},

	// Add in properties whose names you wish to fix before
	// setting or getting the value
	cssProps: {},

	// Get and set the style property on a DOM Node
	style: function( elem, name, value, extra ) {

		// Don't set styles on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
			return;
		}

		// Make sure that we're working with the right name
		var ret, type, hooks,
			origName = camelCase( name ),
			isCustomProp = rcustomProp.test( name ),
			style = elem.style;

		// Make sure that we're working with the right name. We don't
		// want to query the value if it is a CSS custom property
		// since they are user-defined.
		if ( !isCustomProp ) {
			name = finalPropName( origName );
		}

		// Gets hook for the prefixed version, then unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// Check if we're setting a value
		if ( value !== undefined ) {
			type = typeof value;

			// Convert "+=" or "-=" to relative numbers (#7345)
			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
				value = adjustCSS( elem, name, ret );

				// Fixes bug #9237
				type = "number";
			}

			// Make sure that null and NaN values aren't set (#7116)
			if ( value == null || value !== value ) {
				return;
			}

			// If a number was passed in, add the unit (except for certain CSS properties)
			if ( type === "number" ) {
				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
			}

			// background-* props affect original clone's values
			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
				style[ name ] = "inherit";
			}

			// If a hook was provided, use that value, otherwise just set the specified value
			if ( !hooks || !( "set" in hooks ) ||
				( value = hooks.set( elem, value, extra ) ) !== undefined ) {

				if ( isCustomProp ) {
					style.setProperty( name, value );
				} else {
					style[ name ] = value;
				}
			}

		} else {

			// If a hook was provided get the non-computed value from there
			if ( hooks && "get" in hooks &&
				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {

				return ret;
			}

			// Otherwise just get the value from the style object
			return style[ name ];
		}
	},

	css: function( elem, name, extra, styles ) {
		var val, num, hooks,
			origName = camelCase( name ),
			isCustomProp = rcustomProp.test( name );

		// Make sure that we're working with the right name. We don't
		// want to modify the value if it is a CSS custom property
		// since they are user-defined.
		if ( !isCustomProp ) {
			name = finalPropName( origName );
		}

		// Try prefixed name followed by the unprefixed name
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// If a hook was provided get the computed value from there
		if ( hooks && "get" in hooks ) {
			val = hooks.get( elem, true, extra );
		}

		// Otherwise, if a way to get the computed value exists, use that
		if ( val === undefined ) {
			val = curCSS( elem, name, styles );
		}

		// Convert "normal" to computed value
		if ( val === "normal" && name in cssNormalTransform ) {
			val = cssNormalTransform[ name ];
		}

		// Make numeric if forced or a qualifier was provided and val looks numeric
		if ( extra === "" || extra ) {
			num = parseFloat( val );
			return extra === true || isFinite( num ) ? num || 0 : val;
		}

		return val;
	}
} );

jQuery.each( [ "height", "width" ], function( i, dimension ) {
	jQuery.cssHooks[ dimension ] = {
		get: function( elem, computed, extra ) {
			if ( computed ) {

				// Certain elements can have dimension info if we invisibly show them
				// but it must have a current display style that would benefit
				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&

					// Support: Safari 8+
					// Table columns in Safari have non-zero offsetWidth & zero
					// getBoundingClientRect().width unless display is changed.
					// Support: IE <=11 only
					// Running getBoundingClientRect on a disconnected node
					// in IE throws an error.
					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
						swap( elem, cssShow, function() {
							return getWidthOrHeight( elem, dimension, extra );
						} ) :
						getWidthOrHeight( elem, dimension, extra );
			}
		},

		set: function( elem, value, extra ) {
			var matches,
				styles = getStyles( elem ),
				isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
				subtract = extra && boxModelAdjustment(
					elem,
					dimension,
					extra,
					isBorderBox,
					styles
				);

			// Account for unreliable border-box dimensions by comparing offset* to computed and
			// faking a content-box to get border and padding (gh-3699)
			if ( isBorderBox && support.scrollboxSize() === styles.position ) {
				subtract -= Math.ceil(
					elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
					parseFloat( styles[ dimension ] ) -
					boxModelAdjustment( elem, dimension, "border", false, styles ) -
					0.5
				);
			}

			// Convert to pixels if value adjustment is needed
			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
				( matches[ 3 ] || "px" ) !== "px" ) {

				elem.style[ dimension ] = value;
				value = jQuery.css( elem, dimension );
			}

			return setPositiveNumber( elem, value, subtract );
		}
	};
} );

jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
	function( elem, computed ) {
		if ( computed ) {
			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
				elem.getBoundingClientRect().left -
					swap( elem, { marginLeft: 0 }, function() {
						return elem.getBoundingClientRect().left;
					} )
				) + "px";
		}
	}
);

// These hooks are used by animate to expand properties
jQuery.each( {
	margin: "",
	padding: "",
	border: "Width"
}, function( prefix, suffix ) {
	jQuery.cssHooks[ prefix + suffix ] = {
		expand: function( value ) {
			var i = 0,
				expanded = {},

				// Assumes a single number if not a string
				parts = typeof value === "string" ? value.split( " " ) : [ value ];

			for ( ; i < 4; i++ ) {
				expanded[ prefix + cssExpand[ i ] + suffix ] =
					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
			}

			return expanded;
		}
	};

	if ( prefix !== "margin" ) {
		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
	}
} );

jQuery.fn.extend( {
	css: function( name, value ) {
		return access( this, function( elem, name, value ) {
			var styles, len,
				map = {},
				i = 0;

			if ( Array.isArray( name ) ) {
				styles = getStyles( elem );
				len = name.length;

				for ( ; i < len; i++ ) {
					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
				}

				return map;
			}

			return value !== undefined ?
				jQuery.style( elem, name, value ) :
				jQuery.css( elem, name );
		}, name, value, arguments.length > 1 );
	}
} );


function Tween( elem, options, prop, end, easing ) {
	return new Tween.prototype.init( elem, options, prop, end, easing );
}
jQuery.Tween = Tween;

Tween.prototype = {
	constructor: Tween,
	init: function( elem, options, prop, end, easing, unit ) {
		this.elem = elem;
		this.prop = prop;
		this.easing = easing || jQuery.easing._default;
		this.options = options;
		this.start = this.now = this.cur();
		this.end = end;
		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
	},
	cur: function() {
		var hooks = Tween.propHooks[ this.prop ];

		return hooks && hooks.get ?
			hooks.get( this ) :
			Tween.propHooks._default.get( this );
	},
	run: function( percent ) {
		var eased,
			hooks = Tween.propHooks[ this.prop ];

		if ( this.options.duration ) {
			this.pos = eased = jQuery.easing[ this.easing ](
				percent, this.options.duration * percent, 0, 1, this.options.duration
			);
		} else {
			this.pos = eased = percent;
		}
		this.now = ( this.end - this.start ) * eased + this.start;

		if ( this.options.step ) {
			this.options.step.call( this.elem, this.now, this );
		}

		if ( hooks && hooks.set ) {
			hooks.set( this );
		} else {
			Tween.propHooks._default.set( this );
		}
		return this;
	}
};

Tween.prototype.init.prototype = Tween.prototype;

Tween.propHooks = {
	_default: {
		get: function( tween ) {
			var result;

			// Use a property on the element directly when it is not a DOM element,
			// or when there is no matching style property that exists.
			if ( tween.elem.nodeType !== 1 ||
				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
				return tween.elem[ tween.prop ];
			}

			// Passing an empty string as a 3rd parameter to .css will automatically
			// attempt a parseFloat and fallback to a string if the parse fails.
			// Simple values such as "10px" are parsed to Float;
			// complex values such as "rotate(1rad)" are returned as-is.
			result = jQuery.css( tween.elem, tween.prop, "" );

			// Empty strings, null, undefined and "auto" are converted to 0.
			return !result || result === "auto" ? 0 : result;
		},
		set: function( tween ) {

			// Use step hook for back compat.
			// Use cssHook if its there.
			// Use .style if available and use plain properties where available.
			if ( jQuery.fx.step[ tween.prop ] ) {
				jQuery.fx.step[ tween.prop ]( tween );
			} else if ( tween.elem.nodeType === 1 &&
				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
					jQuery.cssHooks[ tween.prop ] ) ) {
				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
			} else {
				tween.elem[ tween.prop ] = tween.now;
			}
		}
	}
};

// Support: IE <=9 only
// Panic based approach to setting things on disconnected nodes
Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
	set: function( tween ) {
		if ( tween.elem.nodeType && tween.elem.parentNode ) {
			tween.elem[ tween.prop ] = tween.now;
		}
	}
};

jQuery.easing = {
	linear: function( p ) {
		return p;
	},
	swing: function( p ) {
		return 0.5 - Math.cos( p * Math.PI ) / 2;
	},
	_default: "swing"
};

jQuery.fx = Tween.prototype.init;

// Back compat <1.8 extension point
jQuery.fx.step = {};




var
	fxNow, inProgress,
	rfxtypes = /^(?:toggle|show|hide)$/,
	rrun = /queueHooks$/;

function schedule() {
	if ( inProgress ) {
		if ( document.hidden === false && window.requestAnimationFrame ) {
			window.requestAnimationFrame( schedule );
		} else {
			window.setTimeout( schedule, jQuery.fx.interval );
		}

		jQuery.fx.tick();
	}
}

// Animations created synchronously will run synchronously
function createFxNow() {
	window.setTimeout( function() {
		fxNow = undefined;
	} );
	return ( fxNow = Date.now() );
}

// Generate parameters to create a standard animation
function genFx( type, includeWidth ) {
	var which,
		i = 0,
		attrs = { height: type };

	// If we include width, step value is 1 to do all cssExpand values,
	// otherwise step value is 2 to skip over Left and Right
	includeWidth = includeWidth ? 1 : 0;
	for ( ; i < 4; i += 2 - includeWidth ) {
		which = cssExpand[ i ];
		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
	}

	if ( includeWidth ) {
		attrs.opacity = attrs.width = type;
	}

	return attrs;
}

function createTween( value, prop, animation ) {
	var tween,
		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
		index = 0,
		length = collection.length;
	for ( ; index < length; index++ ) {
		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {

			// We're done with this property
			return tween;
		}
	}
}

function defaultPrefilter( elem, props, opts ) {
	var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
		isBox = "width" in props || "height" in props,
		anim = this,
		orig = {},
		style = elem.style,
		hidden = elem.nodeType && isHiddenWithinTree( elem ),
		dataShow = dataPriv.get( elem, "fxshow" );

	// Queue-skipping animations hijack the fx hooks
	if ( !opts.queue ) {
		hooks = jQuery._queueHooks( elem, "fx" );
		if ( hooks.unqueued == null ) {
			hooks.unqueued = 0;
			oldfire = hooks.empty.fire;
			hooks.empty.fire = function() {
				if ( !hooks.unqueued ) {
					oldfire();
				}
			};
		}
		hooks.unqueued++;

		anim.always( function() {

			// Ensure the complete handler is called before this completes
			anim.always( function() {
				hooks.unqueued--;
				if ( !jQuery.queue( elem, "fx" ).length ) {
					hooks.empty.fire();
				}
			} );
		} );
	}

	// Detect show/hide animations
	for ( prop in props ) {
		value = props[ prop ];
		if ( rfxtypes.test( value ) ) {
			delete props[ prop ];
			toggle = toggle || value === "toggle";
			if ( value === ( hidden ? "hide" : "show" ) ) {

				// Pretend to be hidden if this is a "show" and
				// there is still data from a stopped show/hide
				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
					hidden = true;

				// Ignore all other no-op show/hide data
				} else {
					continue;
				}
			}
			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
		}
	}

	// Bail out if this is a no-op like .hide().hide()
	propTween = !jQuery.isEmptyObject( props );
	if ( !propTween && jQuery.isEmptyObject( orig ) ) {
		return;
	}

	// Restrict "overflow" and "display" styles during box animations
	if ( isBox && elem.nodeType === 1 ) {

		// Support: IE <=9 - 11, Edge 12 - 15
		// Record all 3 overflow attributes because IE does not infer the shorthand
		// from identically-valued overflowX and overflowY and Edge just mirrors
		// the overflowX value there.
		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];

		// Identify a display type, preferring old show/hide data over the CSS cascade
		restoreDisplay = dataShow && dataShow.display;
		if ( restoreDisplay == null ) {
			restoreDisplay = dataPriv.get( elem, "display" );
		}
		display = jQuery.css( elem, "display" );
		if ( display === "none" ) {
			if ( restoreDisplay ) {
				display = restoreDisplay;
			} else {

				// Get nonempty value(s) by temporarily forcing visibility
				showHide( [ elem ], true );
				restoreDisplay = elem.style.display || restoreDisplay;
				display = jQuery.css( elem, "display" );
				showHide( [ elem ] );
			}
		}

		// Animate inline elements as inline-block
		if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
			if ( jQuery.css( elem, "float" ) === "none" ) {

				// Restore the original display value at the end of pure show/hide animations
				if ( !propTween ) {
					anim.done( function() {
						style.display = restoreDisplay;
					} );
					if ( restoreDisplay == null ) {
						display = style.display;
						restoreDisplay = display === "none" ? "" : display;
					}
				}
				style.display = "inline-block";
			}
		}
	}

	if ( opts.overflow ) {
		style.overflow = "hidden";
		anim.always( function() {
			style.overflow = opts.overflow[ 0 ];
			style.overflowX = opts.overflow[ 1 ];
			style.overflowY = opts.overflow[ 2 ];
		} );
	}

	// Implement show/hide animations
	propTween = false;
	for ( prop in orig ) {

		// General show/hide setup for this element animation
		if ( !propTween ) {
			if ( dataShow ) {
				if ( "hidden" in dataShow ) {
					hidden = dataShow.hidden;
				}
			} else {
				dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
			}

			// Store hidden/visible for toggle so `.stop().toggle()` "reverses"
			if ( toggle ) {
				dataShow.hidden = !hidden;
			}

			// Show elements before animating them
			if ( hidden ) {
				showHide( [ elem ], true );
			}

			/* eslint-disable no-loop-func */

			anim.done( function() {

			/* eslint-enable no-loop-func */

				// The final step of a "hide" animation is actually hiding the element
				if ( !hidden ) {
					showHide( [ elem ] );
				}
				dataPriv.remove( elem, "fxshow" );
				for ( prop in orig ) {
					jQuery.style( elem, prop, orig[ prop ] );
				}
			} );
		}

		// Per-property setup
		propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
		if ( !( prop in dataShow ) ) {
			dataShow[ prop ] = propTween.start;
			if ( hidden ) {
				propTween.end = propTween.start;
				propTween.start = 0;
			}
		}
	}
}

function propFilter( props, specialEasing ) {
	var index, name, easing, value, hooks;

	// camelCase, specialEasing and expand cssHook pass
	for ( index in props ) {
		name = camelCase( index );
		easing = specialEasing[ name ];
		value = props[ index ];
		if ( Array.isArray( value ) ) {
			easing = value[ 1 ];
			value = props[ index ] = value[ 0 ];
		}

		if ( index !== name ) {
			props[ name ] = value;
			delete props[ index ];
		}

		hooks = jQuery.cssHooks[ name ];
		if ( hooks && "expand" in hooks ) {
			value = hooks.expand( value );
			delete props[ name ];

			// Not quite $.extend, this won't overwrite existing keys.
			// Reusing 'index' because we have the correct "name"
			for ( index in value ) {
				if ( !( index in props ) ) {
					props[ index ] = value[ index ];
					specialEasing[ index ] = easing;
				}
			}
		} else {
			specialEasing[ name ] = easing;
		}
	}
}

function Animation( elem, properties, options ) {
	var result,
		stopped,
		index = 0,
		length = Animation.prefilters.length,
		deferred = jQuery.Deferred().always( function() {

			// Don't match elem in the :animated selector
			delete tick.elem;
		} ),
		tick = function() {
			if ( stopped ) {
				return false;
			}
			var currentTime = fxNow || createFxNow(),
				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),

				// Support: Android 2.3 only
				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
				temp = remaining / animation.duration || 0,
				percent = 1 - temp,
				index = 0,
				length = animation.tweens.length;

			for ( ; index < length; index++ ) {
				animation.tweens[ index ].run( percent );
			}

			deferred.notifyWith( elem, [ animation, percent, remaining ] );

			// If there's more to do, yield
			if ( percent < 1 && length ) {
				return remaining;
			}

			// If this was an empty animation, synthesize a final progress notification
			if ( !length ) {
				deferred.notifyWith( elem, [ animation, 1, 0 ] );
			}

			// Resolve the animation and report its conclusion
			deferred.resolveWith( elem, [ animation ] );
			return false;
		},
		animation = deferred.promise( {
			elem: elem,
			props: jQuery.extend( {}, properties ),
			opts: jQuery.extend( true, {
				specialEasing: {},
				easing: jQuery.easing._default
			}, options ),
			originalProperties: properties,
			originalOptions: options,
			startTime: fxNow || createFxNow(),
			duration: options.duration,
			tweens: [],
			createTween: function( prop, end ) {
				var tween = jQuery.Tween( elem, animation.opts, prop, end,
						animation.opts.specialEasing[ prop ] || animation.opts.easing );
				animation.tweens.push( tween );
				return tween;
			},
			stop: function( gotoEnd ) {
				var index = 0,

					// If we are going to the end, we want to run all the tweens
					// otherwise we skip this part
					length = gotoEnd ? animation.tweens.length : 0;
				if ( stopped ) {
					return this;
				}
				stopped = true;
				for ( ; index < length; index++ ) {
					animation.tweens[ index ].run( 1 );
				}

				// Resolve when we played the last frame; otherwise, reject
				if ( gotoEnd ) {
					deferred.notifyWith( elem, [ animation, 1, 0 ] );
					deferred.resolveWith( elem, [ animation, gotoEnd ] );
				} else {
					deferred.rejectWith( elem, [ animation, gotoEnd ] );
				}
				return this;
			}
		} ),
		props = animation.props;

	propFilter( props, animation.opts.specialEasing );

	for ( ; index < length; index++ ) {
		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
		if ( result ) {
			if ( isFunction( result.stop ) ) {
				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
					result.stop.bind( result );
			}
			return result;
		}
	}

	jQuery.map( props, createTween, animation );

	if ( isFunction( animation.opts.start ) ) {
		animation.opts.start.call( elem, animation );
	}

	// Attach callbacks from options
	animation
		.progress( animation.opts.progress )
		.done( animation.opts.done, animation.opts.complete )
		.fail( animation.opts.fail )
		.always( animation.opts.always );

	jQuery.fx.timer(
		jQuery.extend( tick, {
			elem: elem,
			anim: animation,
			queue: animation.opts.queue
		} )
	);

	return animation;
}

jQuery.Animation = jQuery.extend( Animation, {

	tweeners: {
		"*": [ function( prop, value ) {
			var tween = this.createTween( prop, value );
			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
			return tween;
		} ]
	},

	tweener: function( props, callback ) {
		if ( isFunction( props ) ) {
			callback = props;
			props = [ "*" ];
		} else {
			props = props.match( rnothtmlwhite );
		}

		var prop,
			index = 0,
			length = props.length;

		for ( ; index < length; index++ ) {
			prop = props[ index ];
			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
			Animation.tweeners[ prop ].unshift( callback );
		}
	},

	prefilters: [ defaultPrefilter ],

	prefilter: function( callback, prepend ) {
		if ( prepend ) {
			Animation.prefilters.unshift( callback );
		} else {
			Animation.prefilters.push( callback );
		}
	}
} );

jQuery.speed = function( speed, easing, fn ) {
	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
		complete: fn || !fn && easing ||
			isFunction( speed ) && speed,
		duration: speed,
		easing: fn && easing || easing && !isFunction( easing ) && easing
	};

	// Go to the end state if fx are off
	if ( jQuery.fx.off ) {
		opt.duration = 0;

	} else {
		if ( typeof opt.duration !== "number" ) {
			if ( opt.duration in jQuery.fx.speeds ) {
				opt.duration = jQuery.fx.speeds[ opt.duration ];

			} else {
				opt.duration = jQuery.fx.speeds._default;
			}
		}
	}

	// Normalize opt.queue - true/undefined/null -> "fx"
	if ( opt.queue == null || opt.queue === true ) {
		opt.queue = "fx";
	}

	// Queueing
	opt.old = opt.complete;

	opt.complete = function() {
		if ( isFunction( opt.old ) ) {
			opt.old.call( this );
		}

		if ( opt.queue ) {
			jQuery.dequeue( this, opt.queue );
		}
	};

	return opt;
};

jQuery.fn.extend( {
	fadeTo: function( speed, to, easing, callback ) {

		// Show any hidden elements after setting opacity to 0
		return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()

			// Animate to the value specified
			.end().animate( { opacity: to }, speed, easing, callback );
	},
	animate: function( prop, speed, easing, callback ) {
		var empty = jQuery.isEmptyObject( prop ),
			optall = jQuery.speed( speed, easing, callback ),
			doAnimation = function() {

				// Operate on a copy of prop so per-property easing won't be lost
				var anim = Animation( this, jQuery.extend( {}, prop ), optall );

				// Empty animations, or finishing resolves immediately
				if ( empty || dataPriv.get( this, "finish" ) ) {
					anim.stop( true );
				}
			};
			doAnimation.finish = doAnimation;

		return empty || optall.queue === false ?
			this.each( doAnimation ) :
			this.queue( optall.queue, doAnimation );
	},
	stop: function( type, clearQueue, gotoEnd ) {
		var stopQueue = function( hooks ) {
			var stop = hooks.stop;
			delete hooks.stop;
			stop( gotoEnd );
		};

		if ( typeof type !== "string" ) {
			gotoEnd = clearQueue;
			clearQueue = type;
			type = undefined;
		}
		if ( clearQueue && type !== false ) {
			this.queue( type || "fx", [] );
		}

		return this.each( function() {
			var dequeue = true,
				index = type != null && type + "queueHooks",
				timers = jQuery.timers,
				data = dataPriv.get( this );

			if ( index ) {
				if ( data[ index ] && data[ index ].stop ) {
					stopQueue( data[ index ] );
				}
			} else {
				for ( index in data ) {
					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
						stopQueue( data[ index ] );
					}
				}
			}

			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this &&
					( type == null || timers[ index ].queue === type ) ) {

					timers[ index ].anim.stop( gotoEnd );
					dequeue = false;
					timers.splice( index, 1 );
				}
			}

			// Start the next in the queue if the last step wasn't forced.
			// Timers currently will call their complete callbacks, which
			// will dequeue but only if they were gotoEnd.
			if ( dequeue || !gotoEnd ) {
				jQuery.dequeue( this, type );
			}
		} );
	},
	finish: function( type ) {
		if ( type !== false ) {
			type = type || "fx";
		}
		return this.each( function() {
			var index,
				data = dataPriv.get( this ),
				queue = data[ type + "queue" ],
				hooks = data[ type + "queueHooks" ],
				timers = jQuery.timers,
				length = queue ? queue.length : 0;

			// Enable finishing flag on private data
			data.finish = true;

			// Empty the queue first
			jQuery.queue( this, type, [] );

			if ( hooks && hooks.stop ) {
				hooks.stop.call( this, true );
			}

			// Look for any active animations, and finish them
			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
					timers[ index ].anim.stop( true );
					timers.splice( index, 1 );
				}
			}

			// Look for any animations in the old queue and finish them
			for ( index = 0; index < length; index++ ) {
				if ( queue[ index ] && queue[ index ].finish ) {
					queue[ index ].finish.call( this );
				}
			}

			// Turn off finishing flag
			delete data.finish;
		} );
	}
} );

jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
	var cssFn = jQuery.fn[ name ];
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return speed == null || typeof speed === "boolean" ?
			cssFn.apply( this, arguments ) :
			this.animate( genFx( name, true ), speed, easing, callback );
	};
} );

// Generate shortcuts for custom animations
jQuery.each( {
	slideDown: genFx( "show" ),
	slideUp: genFx( "hide" ),
	slideToggle: genFx( "toggle" ),
	fadeIn: { opacity: "show" },
	fadeOut: { opacity: "hide" },
	fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return this.animate( props, speed, easing, callback );
	};
} );

jQuery.timers = [];
jQuery.fx.tick = function() {
	var timer,
		i = 0,
		timers = jQuery.timers;

	fxNow = Date.now();

	for ( ; i < timers.length; i++ ) {
		timer = timers[ i ];

		// Run the timer and safely remove it when done (allowing for external removal)
		if ( !timer() && timers[ i ] === timer ) {
			timers.splice( i--, 1 );
		}
	}

	if ( !timers.length ) {
		jQuery.fx.stop();
	}
	fxNow = undefined;
};

jQuery.fx.timer = function( timer ) {
	jQuery.timers.push( timer );
	jQuery.fx.start();
};

jQuery.fx.interval = 13;
jQuery.fx.start = function() {
	if ( inProgress ) {
		return;
	}

	inProgress = true;
	schedule();
};

jQuery.fx.stop = function() {
	inProgress = null;
};

jQuery.fx.speeds = {
	slow: 600,
	fast: 200,

	// Default speed
	_default: 400
};


// Based off of the plugin by Clint Helfers, with permission.
// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
jQuery.fn.delay = function( time, type ) {
	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
	type = type || "fx";

	return this.queue( type, function( next, hooks ) {
		var timeout = window.setTimeout( next, time );
		hooks.stop = function() {
			window.clearTimeout( timeout );
		};
	} );
};


( function() {
	var input = document.createElement( "input" ),
		select = document.createElement( "select" ),
		opt = select.appendChild( document.createElement( "option" ) );

	input.type = "checkbox";

	// Support: Android <=4.3 only
	// Default value for a checkbox should be "on"
	support.checkOn = input.value !== "";

	// Support: IE <=11 only
	// Must access selectedIndex to make default options select
	support.optSelected = opt.selected;

	// Support: IE <=11 only
	// An input loses its value after becoming a radio
	input = document.createElement( "input" );
	input.value = "t";
	input.type = "radio";
	support.radioValue = input.value === "t";
} )();


var boolHook,
	attrHandle = jQuery.expr.attrHandle;

jQuery.fn.extend( {
	attr: function( name, value ) {
		return access( this, jQuery.attr, name, value, arguments.length > 1 );
	},

	removeAttr: function( name ) {
		return this.each( function() {
			jQuery.removeAttr( this, name );
		} );
	}
} );

jQuery.extend( {
	attr: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set attributes on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		// Fallback to prop when attributes are not supported
		if ( typeof elem.getAttribute === "undefined" ) {
			return jQuery.prop( elem, name, value );
		}

		// Attribute hooks are determined by the lowercase version
		// Grab necessary hook if one is defined
		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
			hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
		}

		if ( value !== undefined ) {
			if ( value === null ) {
				jQuery.removeAttr( elem, name );
				return;
			}

			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			elem.setAttribute( name, value + "" );
			return value;
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		ret = jQuery.find.attr( elem, name );

		// Non-existent attributes return null, we normalize to undefined
		return ret == null ? undefined : ret;
	},

	attrHooks: {
		type: {
			set: function( elem, value ) {
				if ( !support.radioValue && value === "radio" &&
					nodeName( elem, "input" ) ) {
					var val = elem.value;
					elem.setAttribute( "type", value );
					if ( val ) {
						elem.value = val;
					}
					return value;
				}
			}
		}
	},

	removeAttr: function( elem, value ) {
		var name,
			i = 0,

			// Attribute names can contain non-HTML whitespace characters
			// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
			attrNames = value && value.match( rnothtmlwhite );

		if ( attrNames && elem.nodeType === 1 ) {
			while ( ( name = attrNames[ i++ ] ) ) {
				elem.removeAttribute( name );
			}
		}
	}
} );

// Hooks for boolean attributes
boolHook = {
	set: function( elem, value, name ) {
		if ( value === false ) {

			// Remove boolean attributes when set to false
			jQuery.removeAttr( elem, name );
		} else {
			elem.setAttribute( name, name );
		}
		return name;
	}
};

jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
	var getter = attrHandle[ name ] || jQuery.find.attr;

	attrHandle[ name ] = function( elem, name, isXML ) {
		var ret, handle,
			lowercaseName = name.toLowerCase();

		if ( !isXML ) {

			// Avoid an infinite loop by temporarily removing this function from the getter
			handle = attrHandle[ lowercaseName ];
			attrHandle[ lowercaseName ] = ret;
			ret = getter( elem, name, isXML ) != null ?
				lowercaseName :
				null;
			attrHandle[ lowercaseName ] = handle;
		}
		return ret;
	};
} );




var rfocusable = /^(?:input|select|textarea|button)$/i,
	rclickable = /^(?:a|area)$/i;

jQuery.fn.extend( {
	prop: function( name, value ) {
		return access( this, jQuery.prop, name, value, arguments.length > 1 );
	},

	removeProp: function( name ) {
		return this.each( function() {
			delete this[ jQuery.propFix[ name ] || name ];
		} );
	}
} );

jQuery.extend( {
	prop: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set properties on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {

			// Fix name and attach hooks
			name = jQuery.propFix[ name ] || name;
			hooks = jQuery.propHooks[ name ];
		}

		if ( value !== undefined ) {
			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			return ( elem[ name ] = value );
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		return elem[ name ];
	},

	propHooks: {
		tabIndex: {
			get: function( elem ) {

				// Support: IE <=9 - 11 only
				// elem.tabIndex doesn't always return the
				// correct value when it hasn't been explicitly set
				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
				// Use proper attribute retrieval(#12072)
				var tabindex = jQuery.find.attr( elem, "tabindex" );

				if ( tabindex ) {
					return parseInt( tabindex, 10 );
				}

				if (
					rfocusable.test( elem.nodeName ) ||
					rclickable.test( elem.nodeName ) &&
					elem.href
				) {
					return 0;
				}

				return -1;
			}
		}
	},

	propFix: {
		"for": "htmlFor",
		"class": "className"
	}
} );

// Support: IE <=11 only
// Accessing the selectedIndex property
// forces the browser to respect setting selected
// on the option
// The getter ensures a default option is selected
// when in an optgroup
// eslint rule "no-unused-expressions" is disabled for this code
// since it considers such accessions noop
if ( !support.optSelected ) {
	jQuery.propHooks.selected = {
		get: function( elem ) {

			/* eslint no-unused-expressions: "off" */

			var parent = elem.parentNode;
			if ( parent && parent.parentNode ) {
				parent.parentNode.selectedIndex;
			}
			return null;
		},
		set: function( elem ) {

			/* eslint no-unused-expressions: "off" */

			var parent = elem.parentNode;
			if ( parent ) {
				parent.selectedIndex;

				if ( parent.parentNode ) {
					parent.parentNode.selectedIndex;
				}
			}
		}
	};
}

jQuery.each( [
	"tabIndex",
	"readOnly",
	"maxLength",
	"cellSpacing",
	"cellPadding",
	"rowSpan",
	"colSpan",
	"useMap",
	"frameBorder",
	"contentEditable"
], function() {
	jQuery.propFix[ this.toLowerCase() ] = this;
} );




	// Strip and collapse whitespace according to HTML spec
	// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
	function stripAndCollapse( value ) {
		var tokens = value.match( rnothtmlwhite ) || [];
		return tokens.join( " " );
	}


function getClass( elem ) {
	return elem.getAttribute && elem.getAttribute( "class" ) || "";
}

function classesToArray( value ) {
	if ( Array.isArray( value ) ) {
		return value;
	}
	if ( typeof value === "string" ) {
		return value.match( rnothtmlwhite ) || [];
	}
	return [];
}

jQuery.fn.extend( {
	addClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		classes = classesToArray( value );

		if ( classes.length ) {
			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );
				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {
						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
							cur += clazz + " ";
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = stripAndCollapse( cur );
					if ( curValue !== finalValue ) {
						elem.setAttribute( "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	removeClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		if ( !arguments.length ) {
			return this.attr( "class", "" );
		}

		classes = classesToArray( value );

		if ( classes.length ) {
			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );

				// This expression is here for better compressibility (see addClass)
				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {

						// Remove *all* instances
						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
							cur = cur.replace( " " + clazz + " ", " " );
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = stripAndCollapse( cur );
					if ( curValue !== finalValue ) {
						elem.setAttribute( "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	toggleClass: function( value, stateVal ) {
		var type = typeof value,
			isValidValue = type === "string" || Array.isArray( value );

		if ( typeof stateVal === "boolean" && isValidValue ) {
			return stateVal ? this.addClass( value ) : this.removeClass( value );
		}

		if ( isFunction( value ) ) {
			return this.each( function( i ) {
				jQuery( this ).toggleClass(
					value.call( this, i, getClass( this ), stateVal ),
					stateVal
				);
			} );
		}

		return this.each( function() {
			var className, i, self, classNames;

			if ( isValidValue ) {

				// Toggle individual class names
				i = 0;
				self = jQuery( this );
				classNames = classesToArray( value );

				while ( ( className = classNames[ i++ ] ) ) {

					// Check each className given, space separated list
					if ( self.hasClass( className ) ) {
						self.removeClass( className );
					} else {
						self.addClass( className );
					}
				}

			// Toggle whole class name
			} else if ( value === undefined || type === "boolean" ) {
				className = getClass( this );
				if ( className ) {

					// Store className if set
					dataPriv.set( this, "__className__", className );
				}

				// If the element has a class name or if we're passed `false`,
				// then remove the whole classname (if there was one, the above saved it).
				// Otherwise bring back whatever was previously saved (if anything),
				// falling back to the empty string if nothing was stored.
				if ( this.setAttribute ) {
					this.setAttribute( "class",
						className || value === false ?
						"" :
						dataPriv.get( this, "__className__" ) || ""
					);
				}
			}
		} );
	},

	hasClass: function( selector ) {
		var className, elem,
			i = 0;

		className = " " + selector + " ";
		while ( ( elem = this[ i++ ] ) ) {
			if ( elem.nodeType === 1 &&
				( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) {
					return true;
			}
		}

		return false;
	}
} );




var rreturn = /\r/g;

jQuery.fn.extend( {
	val: function( value ) {
		var hooks, ret, valueIsFunction,
			elem = this[ 0 ];

		if ( !arguments.length ) {
			if ( elem ) {
				hooks = jQuery.valHooks[ elem.type ] ||
					jQuery.valHooks[ elem.nodeName.toLowerCase() ];

				if ( hooks &&
					"get" in hooks &&
					( ret = hooks.get( elem, "value" ) ) !== undefined
				) {
					return ret;
				}

				ret = elem.value;

				// Handle most common string cases
				if ( typeof ret === "string" ) {
					return ret.replace( rreturn, "" );
				}

				// Handle cases where value is null/undef or number
				return ret == null ? "" : ret;
			}

			return;
		}

		valueIsFunction = isFunction( value );

		return this.each( function( i ) {
			var val;

			if ( this.nodeType !== 1 ) {
				return;
			}

			if ( valueIsFunction ) {
				val = value.call( this, i, jQuery( this ).val() );
			} else {
				val = value;
			}

			// Treat null/undefined as ""; convert numbers to string
			if ( val == null ) {
				val = "";

			} else if ( typeof val === "number" ) {
				val += "";

			} else if ( Array.isArray( val ) ) {
				val = jQuery.map( val, function( value ) {
					return value == null ? "" : value + "";
				} );
			}

			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];

			// If set returns undefined, fall back to normal setting
			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
				this.value = val;
			}
		} );
	}
} );

jQuery.extend( {
	valHooks: {
		option: {
			get: function( elem ) {

				var val = jQuery.find.attr( elem, "value" );
				return val != null ?
					val :

					// Support: IE <=10 - 11 only
					// option.text throws exceptions (#14686, #14858)
					// Strip and collapse whitespace
					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
					stripAndCollapse( jQuery.text( elem ) );
			}
		},
		select: {
			get: function( elem ) {
				var value, option, i,
					options = elem.options,
					index = elem.selectedIndex,
					one = elem.type === "select-one",
					values = one ? null : [],
					max = one ? index + 1 : options.length;

				if ( index < 0 ) {
					i = max;

				} else {
					i = one ? index : 0;
				}

				// Loop through all the selected options
				for ( ; i < max; i++ ) {
					option = options[ i ];

					// Support: IE <=9 only
					// IE8-9 doesn't update selected after form reset (#2551)
					if ( ( option.selected || i === index ) &&

							// Don't return options that are disabled or in a disabled optgroup
							!option.disabled &&
							( !option.parentNode.disabled ||
								!nodeName( option.parentNode, "optgroup" ) ) ) {

						// Get the specific value for the option
						value = jQuery( option ).val();

						// We don't need an array for one selects
						if ( one ) {
							return value;
						}

						// Multi-Selects return an array
						values.push( value );
					}
				}

				return values;
			},

			set: function( elem, value ) {
				var optionSet, option,
					options = elem.options,
					values = jQuery.makeArray( value ),
					i = options.length;

				while ( i-- ) {
					option = options[ i ];

					/* eslint-disable no-cond-assign */

					if ( option.selected =
						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
					) {
						optionSet = true;
					}

					/* eslint-enable no-cond-assign */
				}

				// Force browsers to behave consistently when non-matching value is set
				if ( !optionSet ) {
					elem.selectedIndex = -1;
				}
				return values;
			}
		}
	}
} );

// Radios and checkboxes getter/setter
jQuery.each( [ "radio", "checkbox" ], function() {
	jQuery.valHooks[ this ] = {
		set: function( elem, value ) {
			if ( Array.isArray( value ) ) {
				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
			}
		}
	};
	if ( !support.checkOn ) {
		jQuery.valHooks[ this ].get = function( elem ) {
			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
		};
	}
} );




// Return jQuery for attributes-only inclusion


support.focusin = "onfocusin" in window;


var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
	stopPropagationCallback = function( e ) {
		e.stopPropagation();
	};

jQuery.extend( jQuery.event, {

	trigger: function( event, data, elem, onlyHandlers ) {

		var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
			eventPath = [ elem || document ],
			type = hasOwn.call( event, "type" ) ? event.type : event,
			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];

		cur = lastElement = tmp = elem = elem || document;

		// Don't do events on text and comment nodes
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		// focus/blur morphs to focusin/out; ensure we're not firing them right now
		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
			return;
		}

		if ( type.indexOf( "." ) > -1 ) {

			// Namespaced trigger; create a regexp to match event type in handle()
			namespaces = type.split( "." );
			type = namespaces.shift();
			namespaces.sort();
		}
		ontype = type.indexOf( ":" ) < 0 && "on" + type;

		// Caller can pass in a jQuery.Event object, Object, or just an event type string
		event = event[ jQuery.expando ] ?
			event :
			new jQuery.Event( type, typeof event === "object" && event );

		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
		event.isTrigger = onlyHandlers ? 2 : 3;
		event.namespace = namespaces.join( "." );
		event.rnamespace = event.namespace ?
			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
			null;

		// Clean up the event in case it is being reused
		event.result = undefined;
		if ( !event.target ) {
			event.target = elem;
		}

		// Clone any incoming data and prepend the event, creating the handler arg list
		data = data == null ?
			[ event ] :
			jQuery.makeArray( data, [ event ] );

		// Allow special events to draw outside the lines
		special = jQuery.event.special[ type ] || {};
		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
			return;
		}

		// Determine event propagation path in advance, per W3C events spec (#9951)
		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
		if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {

			bubbleType = special.delegateType || type;
			if ( !rfocusMorph.test( bubbleType + type ) ) {
				cur = cur.parentNode;
			}
			for ( ; cur; cur = cur.parentNode ) {
				eventPath.push( cur );
				tmp = cur;
			}

			// Only add window if we got to document (e.g., not plain obj or detached DOM)
			if ( tmp === ( elem.ownerDocument || document ) ) {
				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
			}
		}

		// Fire handlers on the event path
		i = 0;
		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
			lastElement = cur;
			event.type = i > 1 ?
				bubbleType :
				special.bindType || type;

			// jQuery handler
			handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] &&
				dataPriv.get( cur, "handle" );
			if ( handle ) {
				handle.apply( cur, data );
			}

			// Native handler
			handle = ontype && cur[ ontype ];
			if ( handle && handle.apply && acceptData( cur ) ) {
				event.result = handle.apply( cur, data );
				if ( event.result === false ) {
					event.preventDefault();
				}
			}
		}
		event.type = type;

		// If nobody prevented the default action, do it now
		if ( !onlyHandlers && !event.isDefaultPrevented() ) {

			if ( ( !special._default ||
				special._default.apply( eventPath.pop(), data ) === false ) &&
				acceptData( elem ) ) {

				// Call a native DOM method on the target with the same name as the event.
				// Don't do default actions on window, that's where global variables be (#6170)
				if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {

					// Don't re-trigger an onFOO event when we call its FOO() method
					tmp = elem[ ontype ];

					if ( tmp ) {
						elem[ ontype ] = null;
					}

					// Prevent re-triggering of the same event, since we already bubbled it above
					jQuery.event.triggered = type;

					if ( event.isPropagationStopped() ) {
						lastElement.addEventListener( type, stopPropagationCallback );
					}

					elem[ type ]();

					if ( event.isPropagationStopped() ) {
						lastElement.removeEventListener( type, stopPropagationCallback );
					}

					jQuery.event.triggered = undefined;

					if ( tmp ) {
						elem[ ontype ] = tmp;
					}
				}
			}
		}

		return event.result;
	},

	// Piggyback on a donor event to simulate a different one
	// Used only for `focus(in | out)` events
	simulate: function( type, elem, event ) {
		var e = jQuery.extend(
			new jQuery.Event(),
			event,
			{
				type: type,
				isSimulated: true
			}
		);

		jQuery.event.trigger( e, null, elem );
	}

} );

jQuery.fn.extend( {

	trigger: function( type, data ) {
		return this.each( function() {
			jQuery.event.trigger( type, data, this );
		} );
	},
	triggerHandler: function( type, data ) {
		var elem = this[ 0 ];
		if ( elem ) {
			return jQuery.event.trigger( type, data, elem, true );
		}
	}
} );


// Support: Firefox <=44
// Firefox doesn't have focus(in | out) events
// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
//
// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
// focus(in | out) events fire after focus & blur events,
// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
if ( !support.focusin ) {
	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {

		// Attach a single capturing handler on the document while someone wants focusin/focusout
		var handler = function( event ) {
			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
		};

		jQuery.event.special[ fix ] = {
			setup: function() {
				var doc = this.ownerDocument || this,
					attaches = dataPriv.access( doc, fix );

				if ( !attaches ) {
					doc.addEventListener( orig, handler, true );
				}
				dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
			},
			teardown: function() {
				var doc = this.ownerDocument || this,
					attaches = dataPriv.access( doc, fix ) - 1;

				if ( !attaches ) {
					doc.removeEventListener( orig, handler, true );
					dataPriv.remove( doc, fix );

				} else {
					dataPriv.access( doc, fix, attaches );
				}
			}
		};
	} );
}
var location = window.location;

var nonce = Date.now();

var rquery = ( /\?/ );



// Cross-browser xml parsing
jQuery.parseXML = function( data ) {
	var xml;
	if ( !data || typeof data !== "string" ) {
		return null;
	}

	// Support: IE 9 - 11 only
	// IE throws on parseFromString with invalid input.
	try {
		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
	} catch ( e ) {
		xml = undefined;
	}

	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
		jQuery.error( "Invalid XML: " + data );
	}
	return xml;
};


var
	rbracket = /\[\]$/,
	rCRLF = /\r?\n/g,
	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
	rsubmittable = /^(?:input|select|textarea|keygen)/i;

function buildParams( prefix, obj, traditional, add ) {
	var name;

	if ( Array.isArray( obj ) ) {

		// Serialize array item.
		jQuery.each( obj, function( i, v ) {
			if ( traditional || rbracket.test( prefix ) ) {

				// Treat each array item as a scalar.
				add( prefix, v );

			} else {

				// Item is non-scalar (array or object), encode its numeric index.
				buildParams(
					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
					v,
					traditional,
					add
				);
			}
		} );

	} else if ( !traditional && toType( obj ) === "object" ) {

		// Serialize object item.
		for ( name in obj ) {
			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
		}

	} else {

		// Serialize scalar item.
		add( prefix, obj );
	}
}

// Serialize an array of form elements or a set of
// key/values into a query string
jQuery.param = function( a, traditional ) {
	var prefix,
		s = [],
		add = function( key, valueOrFunction ) {

			// If value is a function, invoke it and use its return value
			var value = isFunction( valueOrFunction ) ?
				valueOrFunction() :
				valueOrFunction;

			s[ s.length ] = encodeURIComponent( key ) + "=" +
				encodeURIComponent( value == null ? "" : value );
		};

	// If an array was passed in, assume that it is an array of form elements.
	if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {

		// Serialize the form elements
		jQuery.each( a, function() {
			add( this.name, this.value );
		} );

	} else {

		// If traditional, encode the "old" way (the way 1.3.2 or older
		// did it), otherwise encode params recursively.
		for ( prefix in a ) {
			buildParams( prefix, a[ prefix ], traditional, add );
		}
	}

	// Return the resulting serialization
	return s.join( "&" );
};

jQuery.fn.extend( {
	serialize: function() {
		return jQuery.param( this.serializeArray() );
	},
	serializeArray: function() {
		return this.map( function() {

			// Can add propHook for "elements" to filter or add form elements
			var elements = jQuery.prop( this, "elements" );
			return elements ? jQuery.makeArray( elements ) : this;
		} )
		.filter( function() {
			var type = this.type;

			// Use .is( ":disabled" ) so that fieldset[disabled] works
			return this.name && !jQuery( this ).is( ":disabled" ) &&
				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
				( this.checked || !rcheckableType.test( type ) );
		} )
		.map( function( i, elem ) {
			var val = jQuery( this ).val();

			if ( val == null ) {
				return null;
			}

			if ( Array.isArray( val ) ) {
				return jQuery.map( val, function( val ) {
					return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
				} );
			}

			return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
		} ).get();
	}
} );


var
	r20 = /%20/g,
	rhash = /#.*$/,
	rantiCache = /([?&])_=[^&]*/,
	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,

	// #7653, #8125, #8152: local protocol detection
	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
	rnoContent = /^(?:GET|HEAD)$/,
	rprotocol = /^\/\//,

	/* Prefilters
	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
	 * 2) These are called:
	 *    - BEFORE asking for a transport
	 *    - AFTER param serialization (s.data is a string if s.processData is true)
	 * 3) key is the dataType
	 * 4) the catchall symbol "*" can be used
	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
	 */
	prefilters = {},

	/* Transports bindings
	 * 1) key is the dataType
	 * 2) the catchall symbol "*" can be used
	 * 3) selection will start with transport dataType and THEN go to "*" if needed
	 */
	transports = {},

	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
	allTypes = "*/".concat( "*" ),

	// Anchor tag for parsing the document origin
	originAnchor = document.createElement( "a" );
	originAnchor.href = location.href;

// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
function addToPrefiltersOrTransports( structure ) {

	// dataTypeExpression is optional and defaults to "*"
	return function( dataTypeExpression, func ) {

		if ( typeof dataTypeExpression !== "string" ) {
			func = dataTypeExpression;
			dataTypeExpression = "*";
		}

		var dataType,
			i = 0,
			dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];

		if ( isFunction( func ) ) {

			// For each dataType in the dataTypeExpression
			while ( ( dataType = dataTypes[ i++ ] ) ) {

				// Prepend if requested
				if ( dataType[ 0 ] === "+" ) {
					dataType = dataType.slice( 1 ) || "*";
					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );

				// Otherwise append
				} else {
					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
				}
			}
		}
	};
}

// Base inspection function for prefilters and transports
function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {

	var inspected = {},
		seekingTransport = ( structure === transports );

	function inspect( dataType ) {
		var selected;
		inspected[ dataType ] = true;
		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
			if ( typeof dataTypeOrTransport === "string" &&
				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {

				options.dataTypes.unshift( dataTypeOrTransport );
				inspect( dataTypeOrTransport );
				return false;
			} else if ( seekingTransport ) {
				return !( selected = dataTypeOrTransport );
			}
		} );
		return selected;
	}

	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}

// A special extend for ajax options
// that takes "flat" options (not to be deep extended)
// Fixes #9887
function ajaxExtend( target, src ) {
	var key, deep,
		flatOptions = jQuery.ajaxSettings.flatOptions || {};

	for ( key in src ) {
		if ( src[ key ] !== undefined ) {
			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
		}
	}
	if ( deep ) {
		jQuery.extend( true, target, deep );
	}

	return target;
}

/* Handles responses to an ajax request:
 * - finds the right dataType (mediates between content-type and expected dataType)
 * - returns the corresponding response
 */
function ajaxHandleResponses( s, jqXHR, responses ) {

	var ct, type, finalDataType, firstDataType,
		contents = s.contents,
		dataTypes = s.dataTypes;

	// Remove auto dataType and get content-type in the process
	while ( dataTypes[ 0 ] === "*" ) {
		dataTypes.shift();
		if ( ct === undefined ) {
			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
		}
	}

	// Check if we're dealing with a known content-type
	if ( ct ) {
		for ( type in contents ) {
			if ( contents[ type ] && contents[ type ].test( ct ) ) {
				dataTypes.unshift( type );
				break;
			}
		}
	}

	// Check to see if we have a response for the expected dataType
	if ( dataTypes[ 0 ] in responses ) {
		finalDataType = dataTypes[ 0 ];
	} else {

		// Try convertible dataTypes
		for ( type in responses ) {
			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
				finalDataType = type;
				break;
			}
			if ( !firstDataType ) {
				firstDataType = type;
			}
		}

		// Or just use first one
		finalDataType = finalDataType || firstDataType;
	}

	// If we found a dataType
	// We add the dataType to the list if needed
	// and return the corresponding response
	if ( finalDataType ) {
		if ( finalDataType !== dataTypes[ 0 ] ) {
			dataTypes.unshift( finalDataType );
		}
		return responses[ finalDataType ];
	}
}

/* Chain conversions given the request and the original response
 * Also sets the responseXXX fields on the jqXHR instance
 */
function ajaxConvert( s, response, jqXHR, isSuccess ) {
	var conv2, current, conv, tmp, prev,
		converters = {},

		// Work with a copy of dataTypes in case we need to modify it for conversion
		dataTypes = s.dataTypes.slice();

	// Create converters map with lowercased keys
	if ( dataTypes[ 1 ] ) {
		for ( conv in s.converters ) {
			converters[ conv.toLowerCase() ] = s.converters[ conv ];
		}
	}

	current = dataTypes.shift();

	// Convert to each sequential dataType
	while ( current ) {

		if ( s.responseFields[ current ] ) {
			jqXHR[ s.responseFields[ current ] ] = response;
		}

		// Apply the dataFilter if provided
		if ( !prev && isSuccess && s.dataFilter ) {
			response = s.dataFilter( response, s.dataType );
		}

		prev = current;
		current = dataTypes.shift();

		if ( current ) {

			// There's only work to do if current dataType is non-auto
			if ( current === "*" ) {

				current = prev;

			// Convert response if prev dataType is non-auto and differs from current
			} else if ( prev !== "*" && prev !== current ) {

				// Seek a direct converter
				conv = converters[ prev + " " + current ] || converters[ "* " + current ];

				// If none found, seek a pair
				if ( !conv ) {
					for ( conv2 in converters ) {

						// If conv2 outputs current
						tmp = conv2.split( " " );
						if ( tmp[ 1 ] === current ) {

							// If prev can be converted to accepted input
							conv = converters[ prev + " " + tmp[ 0 ] ] ||
								converters[ "* " + tmp[ 0 ] ];
							if ( conv ) {

								// Condense equivalence converters
								if ( conv === true ) {
									conv = converters[ conv2 ];

								// Otherwise, insert the intermediate dataType
								} else if ( converters[ conv2 ] !== true ) {
									current = tmp[ 0 ];
									dataTypes.unshift( tmp[ 1 ] );
								}
								break;
							}
						}
					}
				}

				// Apply converter (if not an equivalence)
				if ( conv !== true ) {

					// Unless errors are allowed to bubble, catch and return them
					if ( conv && s.throws ) {
						response = conv( response );
					} else {
						try {
							response = conv( response );
						} catch ( e ) {
							return {
								state: "parsererror",
								error: conv ? e : "No conversion from " + prev + " to " + current
							};
						}
					}
				}
			}
		}
	}

	return { state: "success", data: response };
}

jQuery.extend( {

	// Counter for holding the number of active queries
	active: 0,

	// Last-Modified header cache for next request
	lastModified: {},
	etag: {},

	ajaxSettings: {
		url: location.href,
		type: "GET",
		isLocal: rlocalProtocol.test( location.protocol ),
		global: true,
		processData: true,
		async: true,
		contentType: "application/x-www-form-urlencoded; charset=UTF-8",

		/*
		timeout: 0,
		data: null,
		dataType: null,
		username: null,
		password: null,
		cache: null,
		throws: false,
		traditional: false,
		headers: {},
		*/

		accepts: {
			"*": allTypes,
			text: "text/plain",
			html: "text/html",
			xml: "application/xml, text/xml",
			json: "application/json, text/javascript"
		},

		contents: {
			xml: /\bxml\b/,
			html: /\bhtml/,
			json: /\bjson\b/
		},

		responseFields: {
			xml: "responseXML",
			text: "responseText",
			json: "responseJSON"
		},

		// Data converters
		// Keys separate source (or catchall "*") and destination types with a single space
		converters: {

			// Convert anything to text
			"* text": String,

			// Text to html (true = no transformation)
			"text html": true,

			// Evaluate text as a json expression
			"text json": JSON.parse,

			// Parse text as xml
			"text xml": jQuery.parseXML
		},

		// For options that shouldn't be deep extended:
		// you can add your own custom options here if
		// and when you create one that shouldn't be
		// deep extended (see ajaxExtend)
		flatOptions: {
			url: true,
			context: true
		}
	},

	// Creates a full fledged settings object into target
	// with both ajaxSettings and settings fields.
	// If target is omitted, writes into ajaxSettings.
	ajaxSetup: function( target, settings ) {
		return settings ?

			// Building a settings object
			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :

			// Extending ajaxSettings
			ajaxExtend( jQuery.ajaxSettings, target );
	},

	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
	ajaxTransport: addToPrefiltersOrTransports( transports ),

	// Main method
	ajax: function( url, options ) {

		// If url is an object, simulate pre-1.5 signature
		if ( typeof url === "object" ) {
			options = url;
			url = undefined;
		}

		// Force options to be an object
		options = options || {};

		var transport,

			// URL without anti-cache param
			cacheURL,

			// Response headers
			responseHeadersString,
			responseHeaders,

			// timeout handle
			timeoutTimer,

			// Url cleanup var
			urlAnchor,

			// Request state (becomes false upon send and true upon completion)
			completed,

			// To know if global events are to be dispatched
			fireGlobals,

			// Loop variable
			i,

			// uncached part of the url
			uncached,

			// Create the final options object
			s = jQuery.ajaxSetup( {}, options ),

			// Callbacks context
			callbackContext = s.context || s,

			// Context for global events is callbackContext if it is a DOM node or jQuery collection
			globalEventContext = s.context &&
				( callbackContext.nodeType || callbackContext.jquery ) ?
					jQuery( callbackContext ) :
					jQuery.event,

			// Deferreds
			deferred = jQuery.Deferred(),
			completeDeferred = jQuery.Callbacks( "once memory" ),

			// Status-dependent callbacks
			statusCode = s.statusCode || {},

			// Headers (they are sent all at once)
			requestHeaders = {},
			requestHeadersNames = {},

			// Default abort message
			strAbort = "canceled",

			// Fake xhr
			jqXHR = {
				readyState: 0,

				// Builds headers hashtable if needed
				getResponseHeader: function( key ) {
					var match;
					if ( completed ) {
						if ( !responseHeaders ) {
							responseHeaders = {};
							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
							}
						}
						match = responseHeaders[ key.toLowerCase() ];
					}
					return match == null ? null : match;
				},

				// Raw string
				getAllResponseHeaders: function() {
					return completed ? responseHeadersString : null;
				},

				// Caches the header
				setRequestHeader: function( name, value ) {
					if ( completed == null ) {
						name = requestHeadersNames[ name.toLowerCase() ] =
							requestHeadersNames[ name.toLowerCase() ] || name;
						requestHeaders[ name ] = value;
					}
					return this;
				},

				// Overrides response content-type header
				overrideMimeType: function( type ) {
					if ( completed == null ) {
						s.mimeType = type;
					}
					return this;
				},

				// Status-dependent callbacks
				statusCode: function( map ) {
					var code;
					if ( map ) {
						if ( completed ) {

							// Execute the appropriate callbacks
							jqXHR.always( map[ jqXHR.status ] );
						} else {

							// Lazy-add the new callbacks in a way that preserves old ones
							for ( code in map ) {
								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
							}
						}
					}
					return this;
				},

				// Cancel the request
				abort: function( statusText ) {
					var finalText = statusText || strAbort;
					if ( transport ) {
						transport.abort( finalText );
					}
					done( 0, finalText );
					return this;
				}
			};

		// Attach deferreds
		deferred.promise( jqXHR );

		// Add protocol if not provided (prefilters might expect it)
		// Handle falsy url in the settings object (#10093: consistency with old signature)
		// We also use the url parameter if available
		s.url = ( ( url || s.url || location.href ) + "" )
			.replace( rprotocol, location.protocol + "//" );

		// Alias method option to type as per ticket #12004
		s.type = options.method || options.type || s.method || s.type;

		// Extract dataTypes list
		s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ];

		// A cross-domain request is in order when the origin doesn't match the current origin.
		if ( s.crossDomain == null ) {
			urlAnchor = document.createElement( "a" );

			// Support: IE <=8 - 11, Edge 12 - 15
			// IE throws exception on accessing the href property if url is malformed,
			// e.g. http://example.com:80x/
			try {
				urlAnchor.href = s.url;

				// Support: IE <=8 - 11 only
				// Anchor's host property isn't correctly set when s.url is relative
				urlAnchor.href = urlAnchor.href;
				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
					urlAnchor.protocol + "//" + urlAnchor.host;
			} catch ( e ) {

				// If there is an error parsing the URL, assume it is crossDomain,
				// it can be rejected by the transport if it is invalid
				s.crossDomain = true;
			}
		}

		// Convert data if not already a string
		if ( s.data && s.processData && typeof s.data !== "string" ) {
			s.data = jQuery.param( s.data, s.traditional );
		}

		// Apply prefilters
		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );

		// If request was aborted inside a prefilter, stop there
		if ( completed ) {
			return jqXHR;
		}

		// We can fire global events as of now if asked to
		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
		fireGlobals = jQuery.event && s.global;

		// Watch for a new set of requests
		if ( fireGlobals && jQuery.active++ === 0 ) {
			jQuery.event.trigger( "ajaxStart" );
		}

		// Uppercase the type
		s.type = s.type.toUpperCase();

		// Determine if request has content
		s.hasContent = !rnoContent.test( s.type );

		// Save the URL in case we're toying with the If-Modified-Since
		// and/or If-None-Match header later on
		// Remove hash to simplify url manipulation
		cacheURL = s.url.replace( rhash, "" );

		// More options handling for requests with no content
		if ( !s.hasContent ) {

			// Remember the hash so we can put it back
			uncached = s.url.slice( cacheURL.length );

			// If data is available and should be processed, append data to url
			if ( s.data && ( s.processData || typeof s.data === "string" ) ) {
				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;

				// #9682: remove data so that it's not used in an eventual retry
				delete s.data;
			}

			// Add or update anti-cache param if needed
			if ( s.cache === false ) {
				cacheURL = cacheURL.replace( rantiCache, "$1" );
				uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached;
			}

			// Put hash and anti-cache on the URL that will be requested (gh-1732)
			s.url = cacheURL + uncached;

		// Change '%20' to '+' if this is encoded form body content (gh-2658)
		} else if ( s.data && s.processData &&
			( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
			s.data = s.data.replace( r20, "+" );
		}

		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
		if ( s.ifModified ) {
			if ( jQuery.lastModified[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
			}
			if ( jQuery.etag[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
			}
		}

		// Set the correct header, if data is being sent
		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
			jqXHR.setRequestHeader( "Content-Type", s.contentType );
		}

		// Set the Accepts header for the server, depending on the dataType
		jqXHR.setRequestHeader(
			"Accept",
			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
				s.accepts[ s.dataTypes[ 0 ] ] +
					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
				s.accepts[ "*" ]
		);

		// Check for headers option
		for ( i in s.headers ) {
			jqXHR.setRequestHeader( i, s.headers[ i ] );
		}

		// Allow custom headers/mimetypes and early abort
		if ( s.beforeSend &&
			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {

			// Abort if not done already and return
			return jqXHR.abort();
		}

		// Aborting is no longer a cancellation
		strAbort = "abort";

		// Install callbacks on deferreds
		completeDeferred.add( s.complete );
		jqXHR.done( s.success );
		jqXHR.fail( s.error );

		// Get transport
		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );

		// If no transport, we auto-abort
		if ( !transport ) {
			done( -1, "No Transport" );
		} else {
			jqXHR.readyState = 1;

			// Send global event
			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
			}

			// If request was aborted inside ajaxSend, stop there
			if ( completed ) {
				return jqXHR;
			}

			// Timeout
			if ( s.async && s.timeout > 0 ) {
				timeoutTimer = window.setTimeout( function() {
					jqXHR.abort( "timeout" );
				}, s.timeout );
			}

			try {
				completed = false;
				transport.send( requestHeaders, done );
			} catch ( e ) {

				// Rethrow post-completion exceptions
				if ( completed ) {
					throw e;
				}

				// Propagate others as results
				done( -1, e );
			}
		}

		// Callback for when everything is done
		function done( status, nativeStatusText, responses, headers ) {
			var isSuccess, success, error, response, modified,
				statusText = nativeStatusText;

			// Ignore repeat invocations
			if ( completed ) {
				return;
			}

			completed = true;

			// Clear timeout if it exists
			if ( timeoutTimer ) {
				window.clearTimeout( timeoutTimer );
			}

			// Dereference transport for early garbage collection
			// (no matter how long the jqXHR object will be used)
			transport = undefined;

			// Cache response headers
			responseHeadersString = headers || "";

			// Set readyState
			jqXHR.readyState = status > 0 ? 4 : 0;

			// Determine if successful
			isSuccess = status >= 200 && status < 300 || status === 304;

			// Get response data
			if ( responses ) {
				response = ajaxHandleResponses( s, jqXHR, responses );
			}

			// Convert no matter what (that way responseXXX fields are always set)
			response = ajaxConvert( s, response, jqXHR, isSuccess );

			// If successful, handle type chaining
			if ( isSuccess ) {

				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
				if ( s.ifModified ) {
					modified = jqXHR.getResponseHeader( "Last-Modified" );
					if ( modified ) {
						jQuery.lastModified[ cacheURL ] = modified;
					}
					modified = jqXHR.getResponseHeader( "etag" );
					if ( modified ) {
						jQuery.etag[ cacheURL ] = modified;
					}
				}

				// if no content
				if ( status === 204 || s.type === "HEAD" ) {
					statusText = "nocontent";

				// if not modified
				} else if ( status === 304 ) {
					statusText = "notmodified";

				// If we have data, let's convert it
				} else {
					statusText = response.state;
					success = response.data;
					error = response.error;
					isSuccess = !error;
				}
			} else {

				// Extract error from statusText and normalize for non-aborts
				error = statusText;
				if ( status || !statusText ) {
					statusText = "error";
					if ( status < 0 ) {
						status = 0;
					}
				}
			}

			// Set data for the fake xhr object
			jqXHR.status = status;
			jqXHR.statusText = ( nativeStatusText || statusText ) + "";

			// Success/Error
			if ( isSuccess ) {
				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
			} else {
				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
			}

			// Status-dependent callbacks
			jqXHR.statusCode( statusCode );
			statusCode = undefined;

			if ( fireGlobals ) {
				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
					[ jqXHR, s, isSuccess ? success : error ] );
			}

			// Complete
			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );

			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );

				// Handle the global AJAX counter
				if ( !( --jQuery.active ) ) {
					jQuery.event.trigger( "ajaxStop" );
				}
			}
		}

		return jqXHR;
	},

	getJSON: function( url, data, callback ) {
		return jQuery.get( url, data, callback, "json" );
	},

	getScript: function( url, callback ) {
		return jQuery.get( url, undefined, callback, "script" );
	}
} );

jQuery.each( [ "get", "post" ], function( i, method ) {
	jQuery[ method ] = function( url, data, callback, type ) {

		// Shift arguments if data argument was omitted
		if ( isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = undefined;
		}

		// The url can be an options object (which then must have .url)
		return jQuery.ajax( jQuery.extend( {
			url: url,
			type: method,
			dataType: type,
			data: data,
			success: callback
		}, jQuery.isPlainObject( url ) && url ) );
	};
} );


jQuery._evalUrl = function( url ) {
	return jQuery.ajax( {
		url: url,

		// Make this explicit, since user can override this through ajaxSetup (#11264)
		type: "GET",
		dataType: "script",
		cache: true,
		async: false,
		global: false,
		"throws": true
	} );
};


jQuery.fn.extend( {
	wrapAll: function( html ) {
		var wrap;

		if ( this[ 0 ] ) {
			if ( isFunction( html ) ) {
				html = html.call( this[ 0 ] );
			}

			// The elements to wrap the target around
			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );

			if ( this[ 0 ].parentNode ) {
				wrap.insertBefore( this[ 0 ] );
			}

			wrap.map( function() {
				var elem = this;

				while ( elem.firstElementChild ) {
					elem = elem.firstElementChild;
				}

				return elem;
			} ).append( this );
		}

		return this;
	},

	wrapInner: function( html ) {
		if ( isFunction( html ) ) {
			return this.each( function( i ) {
				jQuery( this ).wrapInner( html.call( this, i ) );
			} );
		}

		return this.each( function() {
			var self = jQuery( this ),
				contents = self.contents();

			if ( contents.length ) {
				contents.wrapAll( html );

			} else {
				self.append( html );
			}
		} );
	},

	wrap: function( html ) {
		var htmlIsFunction = isFunction( html );

		return this.each( function( i ) {
			jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );
		} );
	},

	unwrap: function( selector ) {
		this.parent( selector ).not( "body" ).each( function() {
			jQuery( this ).replaceWith( this.childNodes );
		} );
		return this;
	}
} );


jQuery.expr.pseudos.hidden = function( elem ) {
	return !jQuery.expr.pseudos.visible( elem );
};
jQuery.expr.pseudos.visible = function( elem ) {
	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
};




jQuery.ajaxSettings.xhr = function() {
	try {
		return new window.XMLHttpRequest();
	} catch ( e ) {}
};

var xhrSuccessStatus = {

		// File protocol always yields status code 0, assume 200
		0: 200,

		// Support: IE <=9 only
		// #1450: sometimes IE returns 1223 when it should be 204
		1223: 204
	},
	xhrSupported = jQuery.ajaxSettings.xhr();

support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
support.ajax = xhrSupported = !!xhrSupported;

jQuery.ajaxTransport( function( options ) {
	var callback, errorCallback;

	// Cross domain only allowed if supported through XMLHttpRequest
	if ( support.cors || xhrSupported && !options.crossDomain ) {
		return {
			send: function( headers, complete ) {
				var i,
					xhr = options.xhr();

				xhr.open(
					options.type,
					options.url,
					options.async,
					options.username,
					options.password
				);

				// Apply custom fields if provided
				if ( options.xhrFields ) {
					for ( i in options.xhrFields ) {
						xhr[ i ] = options.xhrFields[ i ];
					}
				}

				// Override mime type if needed
				if ( options.mimeType && xhr.overrideMimeType ) {
					xhr.overrideMimeType( options.mimeType );
				}

				// X-Requested-With header
				// For cross-domain requests, seeing as conditions for a preflight are
				// akin to a jigsaw puzzle, we simply never set it to be sure.
				// (it can always be set on a per-request basis or even using ajaxSetup)
				// For same-domain requests, won't change header if already provided.
				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
					headers[ "X-Requested-With" ] = "XMLHttpRequest";
				}

				// Set headers
				for ( i in headers ) {
					xhr.setRequestHeader( i, headers[ i ] );
				}

				// Callback
				callback = function( type ) {
					return function() {
						if ( callback ) {
							callback = errorCallback = xhr.onload =
								xhr.onerror = xhr.onabort = xhr.ontimeout =
									xhr.onreadystatechange = null;

							if ( type === "abort" ) {
								xhr.abort();
							} else if ( type === "error" ) {

								// Support: IE <=9 only
								// On a manual native abort, IE9 throws
								// errors on any property access that is not readyState
								if ( typeof xhr.status !== "number" ) {
									complete( 0, "error" );
								} else {
									complete(

										// File: protocol always yields status 0; see #8605, #14207
										xhr.status,
										xhr.statusText
									);
								}
							} else {
								complete(
									xhrSuccessStatus[ xhr.status ] || xhr.status,
									xhr.statusText,

									// Support: IE <=9 only
									// IE9 has no XHR2 but throws on binary (trac-11426)
									// For XHR2 non-text, let the caller handle it (gh-2498)
									( xhr.responseType || "text" ) !== "text"  ||
									typeof xhr.responseText !== "string" ?
										{ binary: xhr.response } :
										{ text: xhr.responseText },
									xhr.getAllResponseHeaders()
								);
							}
						}
					};
				};

				// Listen to events
				xhr.onload = callback();
				errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" );

				// Support: IE 9 only
				// Use onreadystatechange to replace onabort
				// to handle uncaught aborts
				if ( xhr.onabort !== undefined ) {
					xhr.onabort = errorCallback;
				} else {
					xhr.onreadystatechange = function() {

						// Check readyState before timeout as it changes
						if ( xhr.readyState === 4 ) {

							// Allow onerror to be called first,
							// but that will not handle a native abort
							// Also, save errorCallback to a variable
							// as xhr.onerror cannot be accessed
							window.setTimeout( function() {
								if ( callback ) {
									errorCallback();
								}
							} );
						}
					};
				}

				// Create the abort callback
				callback = callback( "abort" );

				try {

					// Do send the request (this may raise an exception)
					xhr.send( options.hasContent && options.data || null );
				} catch ( e ) {

					// #14683: Only rethrow if this hasn't been notified as an error yet
					if ( callback ) {
						throw e;
					}
				}
			},

			abort: function() {
				if ( callback ) {
					callback();
				}
			}
		};
	}
} );




// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
jQuery.ajaxPrefilter( function( s ) {
	if ( s.crossDomain ) {
		s.contents.script = false;
	}
} );

// Install script dataType
jQuery.ajaxSetup( {
	accepts: {
		script: "text/javascript, application/javascript, " +
			"application/ecmascript, application/x-ecmascript"
	},
	contents: {
		script: /\b(?:java|ecma)script\b/
	},
	converters: {
		"text script": function( text ) {
			jQuery.globalEval( text );
			return text;
		}
	}
} );

// Handle cache's special case and crossDomain
jQuery.ajaxPrefilter( "script", function( s ) {
	if ( s.cache === undefined ) {
		s.cache = false;
	}
	if ( s.crossDomain ) {
		s.type = "GET";
	}
} );

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function( s ) {

	// This transport only deals with cross domain requests
	if ( s.crossDomain ) {
		var script, callback;
		return {
			send: function( _, complete ) {
				script = jQuery( "<script>" ).prop( {
					charset: s.scriptCharset,
					src: s.url
				} ).on(
					"load error",
					callback = function( evt ) {
						script.remove();
						callback = null;
						if ( evt ) {
							complete( evt.type === "error" ? 404 : 200, evt.type );
						}
					}
				);

				// Use native DOM manipulation to avoid our domManip AJAX trickery
				document.head.appendChild( script[ 0 ] );
			},
			abort: function() {
				if ( callback ) {
					callback();
				}
			}
		};
	}
} );




var oldCallbacks = [],
	rjsonp = /(=)\?(?=&|$)|\?\?/;

// Default jsonp settings
jQuery.ajaxSetup( {
	jsonp: "callback",
	jsonpCallback: function() {
		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
		this[ callback ] = true;
		return callback;
	}
} );

// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {

	var callbackName, overwritten, responseContainer,
		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
			"url" :
			typeof s.data === "string" &&
				( s.contentType || "" )
					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
				rjsonp.test( s.data ) && "data"
		);

	// Handle iff the expected data type is "jsonp" or we have a parameter to set
	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {

		// Get callback name, remembering preexisting value associated with it
		callbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?
			s.jsonpCallback() :
			s.jsonpCallback;

		// Insert callback into url or form data
		if ( jsonProp ) {
			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
		} else if ( s.jsonp !== false ) {
			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
		}

		// Use data converter to retrieve json after script execution
		s.converters[ "script json" ] = function() {
			if ( !responseContainer ) {
				jQuery.error( callbackName + " was not called" );
			}
			return responseContainer[ 0 ];
		};

		// Force json dataType
		s.dataTypes[ 0 ] = "json";

		// Install callback
		overwritten = window[ callbackName ];
		window[ callbackName ] = function() {
			responseContainer = arguments;
		};

		// Clean-up function (fires after converters)
		jqXHR.always( function() {

			// If previous value didn't exist - remove it
			if ( overwritten === undefined ) {
				jQuery( window ).removeProp( callbackName );

			// Otherwise restore preexisting value
			} else {
				window[ callbackName ] = overwritten;
			}

			// Save back as free
			if ( s[ callbackName ] ) {

				// Make sure that re-using the options doesn't screw things around
				s.jsonpCallback = originalSettings.jsonpCallback;

				// Save the callback name for future use
				oldCallbacks.push( callbackName );
			}

			// Call if it was a function and we have a response
			if ( responseContainer && isFunction( overwritten ) ) {
				overwritten( responseContainer[ 0 ] );
			}

			responseContainer = overwritten = undefined;
		} );

		// Delegate to script
		return "script";
	}
} );




// Support: Safari 8 only
// In Safari 8 documents created via document.implementation.createHTMLDocument
// collapse sibling forms: the second one becomes a child of the first one.
// Because of that, this security measure has to be disabled in Safari 8.
// https://bugs.webkit.org/show_bug.cgi?id=137337
support.createHTMLDocument = ( function() {
	var body = document.implementation.createHTMLDocument( "" ).body;
	body.innerHTML = "<form></form><form></form>";
	return body.childNodes.length === 2;
} )();


// Argument "data" should be string of html
// context (optional): If specified, the fragment will be created in this context,
// defaults to document
// keepScripts (optional): If true, will include scripts passed in the html string
jQuery.parseHTML = function( data, context, keepScripts ) {
	if ( typeof data !== "string" ) {
		return [];
	}
	if ( typeof context === "boolean" ) {
		keepScripts = context;
		context = false;
	}

	var base, parsed, scripts;

	if ( !context ) {

		// Stop scripts or inline event handlers from being executed immediately
		// by using document.implementation
		if ( support.createHTMLDocument ) {
			context = document.implementation.createHTMLDocument( "" );

			// Set the base href for the created document
			// so any parsed elements with URLs
			// are based on the document's URL (gh-2965)
			base = context.createElement( "base" );
			base.href = document.location.href;
			context.head.appendChild( base );
		} else {
			context = document;
		}
	}

	parsed = rsingleTag.exec( data );
	scripts = !keepScripts && [];

	// Single tag
	if ( parsed ) {
		return [ context.createElement( parsed[ 1 ] ) ];
	}

	parsed = buildFragment( [ data ], context, scripts );

	if ( scripts && scripts.length ) {
		jQuery( scripts ).remove();
	}

	return jQuery.merge( [], parsed.childNodes );
};


/**
 * Load a url into a page
 */
jQuery.fn.load = function( url, params, callback ) {
	var selector, type, response,
		self = this,
		off = url.indexOf( " " );

	if ( off > -1 ) {
		selector = stripAndCollapse( url.slice( off ) );
		url = url.slice( 0, off );
	}

	// If it's a function
	if ( isFunction( params ) ) {

		// We assume that it's the callback
		callback = params;
		params = undefined;

	// Otherwise, build a param string
	} else if ( params && typeof params === "object" ) {
		type = "POST";
	}

	// If we have elements to modify, make the request
	if ( self.length > 0 ) {
		jQuery.ajax( {
			url: url,

			// If "type" variable is undefined, then "GET" method will be used.
			// Make value of this field explicit since
			// user can override it through ajaxSetup method
			type: type || "GET",
			dataType: "html",
			data: params
		} ).done( function( responseText ) {

			// Save response for use in complete callback
			response = arguments;

			self.html( selector ?

				// If a selector was specified, locate the right elements in a dummy div
				// Exclude scripts to avoid IE 'Permission Denied' errors
				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :

				// Otherwise use the full result
				responseText );

		// If the request succeeds, this function gets "data", "status", "jqXHR"
		// but they are ignored because response was set above.
		// If it fails, this function gets "jqXHR", "status", "error"
		} ).always( callback && function( jqXHR, status ) {
			self.each( function() {
				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
			} );
		} );
	}

	return this;
};




// Attach a bunch of functions for handling common AJAX events
jQuery.each( [
	"ajaxStart",
	"ajaxStop",
	"ajaxComplete",
	"ajaxError",
	"ajaxSuccess",
	"ajaxSend"
], function( i, type ) {
	jQuery.fn[ type ] = function( fn ) {
		return this.on( type, fn );
	};
} );




jQuery.expr.pseudos.animated = function( elem ) {
	return jQuery.grep( jQuery.timers, function( fn ) {
		return elem === fn.elem;
	} ).length;
};




jQuery.offset = {
	setOffset: function( elem, options, i ) {
		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
			position = jQuery.css( elem, "position" ),
			curElem = jQuery( elem ),
			props = {};

		// Set position first, in-case top/left are set even on static elem
		if ( position === "static" ) {
			elem.style.position = "relative";
		}

		curOffset = curElem.offset();
		curCSSTop = jQuery.css( elem, "top" );
		curCSSLeft = jQuery.css( elem, "left" );
		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;

		// Need to be able to calculate position if either
		// top or left is auto and position is either absolute or fixed
		if ( calculatePosition ) {
			curPosition = curElem.position();
			curTop = curPosition.top;
			curLeft = curPosition.left;

		} else {
			curTop = parseFloat( curCSSTop ) || 0;
			curLeft = parseFloat( curCSSLeft ) || 0;
		}

		if ( isFunction( options ) ) {

			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
		}

		if ( options.top != null ) {
			props.top = ( options.top - curOffset.top ) + curTop;
		}
		if ( options.left != null ) {
			props.left = ( options.left - curOffset.left ) + curLeft;
		}

		if ( "using" in options ) {
			options.using.call( elem, props );

		} else {
			curElem.css( props );
		}
	}
};

jQuery.fn.extend( {

	// offset() relates an element's border box to the document origin
	offset: function( options ) {

		// Preserve chaining for setter
		if ( arguments.length ) {
			return options === undefined ?
				this :
				this.each( function( i ) {
					jQuery.offset.setOffset( this, options, i );
				} );
		}

		var rect, win,
			elem = this[ 0 ];

		if ( !elem ) {
			return;
		}

		// Return zeros for disconnected and hidden (display: none) elements (gh-2310)
		// Support: IE <=11 only
		// Running getBoundingClientRect on a
		// disconnected node in IE throws an error
		if ( !elem.getClientRects().length ) {
			return { top: 0, left: 0 };
		}

		// Get document-relative position by adding viewport scroll to viewport-relative gBCR
		rect = elem.getBoundingClientRect();
		win = elem.ownerDocument.defaultView;
		return {
			top: rect.top + win.pageYOffset,
			left: rect.left + win.pageXOffset
		};
	},

	// position() relates an element's margin box to its offset parent's padding box
	// This corresponds to the behavior of CSS absolute positioning
	position: function() {
		if ( !this[ 0 ] ) {
			return;
		}

		var offsetParent, offset, doc,
			elem = this[ 0 ],
			parentOffset = { top: 0, left: 0 };

		// position:fixed elements are offset from the viewport, which itself always has zero offset
		if ( jQuery.css( elem, "position" ) === "fixed" ) {

			// Assume position:fixed implies availability of getBoundingClientRect
			offset = elem.getBoundingClientRect();

		} else {
			offset = this.offset();

			// Account for the *real* offset parent, which can be the document or its root element
			// when a statically positioned element is identified
			doc = elem.ownerDocument;
			offsetParent = elem.offsetParent || doc.documentElement;
			while ( offsetParent &&
				( offsetParent === doc.body || offsetParent === doc.documentElement ) &&
				jQuery.css( offsetParent, "position" ) === "static" ) {

				offsetParent = offsetParent.parentNode;
			}
			if ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {

				// Incorporate borders into its offset, since they are outside its content origin
				parentOffset = jQuery( offsetParent ).offset();
				parentOffset.top += jQuery.css( offsetParent, "borderTopWidth", true );
				parentOffset.left += jQuery.css( offsetParent, "borderLeftWidth", true );
			}
		}

		// Subtract parent offsets and element margins
		return {
			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
		};
	},

	// This method will return documentElement in the following cases:
	// 1) For the element inside the iframe without offsetParent, this method will return
	//    documentElement of the parent window
	// 2) For the hidden or detached element
	// 3) For body or html element, i.e. in case of the html node - it will return itself
	//
	// but those exceptions were never presented as a real life use-cases
	// and might be considered as more preferable results.
	//
	// This logic, however, is not guaranteed and can change at any point in the future
	offsetParent: function() {
		return this.map( function() {
			var offsetParent = this.offsetParent;

			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
				offsetParent = offsetParent.offsetParent;
			}

			return offsetParent || documentElement;
		} );
	}
} );

// Create scrollLeft and scrollTop methods
jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
	var top = "pageYOffset" === prop;

	jQuery.fn[ method ] = function( val ) {
		return access( this, function( elem, method, val ) {

			// Coalesce documents and windows
			var win;
			if ( isWindow( elem ) ) {
				win = elem;
			} else if ( elem.nodeType === 9 ) {
				win = elem.defaultView;
			}

			if ( val === undefined ) {
				return win ? win[ prop ] : elem[ method ];
			}

			if ( win ) {
				win.scrollTo(
					!top ? val : win.pageXOffset,
					top ? val : win.pageYOffset
				);

			} else {
				elem[ method ] = val;
			}
		}, method, val, arguments.length );
	};
} );

// Support: Safari <=7 - 9.1, Chrome <=37 - 49
// Add the top/left cssHooks using jQuery.fn.position
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
// getComputedStyle returns percent when specified for top/left/bottom/right;
// rather than make the css module depend on the offset module, just check for it here
jQuery.each( [ "top", "left" ], function( i, prop ) {
	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
		function( elem, computed ) {
			if ( computed ) {
				computed = curCSS( elem, prop );

				// If curCSS returns percentage, fallback to offset
				return rnumnonpx.test( computed ) ?
					jQuery( elem ).position()[ prop ] + "px" :
					computed;
			}
		}
	);
} );


// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
		function( defaultExtra, funcName ) {

		// Margin is only for outerHeight, outerWidth
		jQuery.fn[ funcName ] = function( margin, value ) {
			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

			return access( this, function( elem, type, value ) {
				var doc;

				if ( isWindow( elem ) ) {

					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
					return funcName.indexOf( "outer" ) === 0 ?
						elem[ "inner" + name ] :
						elem.document.documentElement[ "client" + name ];
				}

				// Get document width or height
				if ( elem.nodeType === 9 ) {
					doc = elem.documentElement;

					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
					// whichever is greatest
					return Math.max(
						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
						elem.body[ "offset" + name ], doc[ "offset" + name ],
						doc[ "client" + name ]
					);
				}

				return value === undefined ?

					// Get width or height on the element, requesting but not forcing parseFloat
					jQuery.css( elem, type, extra ) :

					// Set width or height on the element
					jQuery.style( elem, type, value, extra );
			}, type, chainable ? margin : undefined, chainable );
		};
	} );
} );


jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
	function( i, name ) {

	// Handle event binding
	jQuery.fn[ name ] = function( data, fn ) {
		return arguments.length > 0 ?
			this.on( name, null, data, fn ) :
			this.trigger( name );
	};
} );

jQuery.fn.extend( {
	hover: function( fnOver, fnOut ) {
		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
	}
} );




jQuery.fn.extend( {

	bind: function( types, data, fn ) {
		return this.on( types, null, data, fn );
	},
	unbind: function( types, fn ) {
		return this.off( types, null, fn );
	},

	delegate: function( selector, types, data, fn ) {
		return this.on( types, selector, data, fn );
	},
	undelegate: function( selector, types, fn ) {

		// ( namespace ) or ( selector, types [, fn] )
		return arguments.length === 1 ?
			this.off( selector, "**" ) :
			this.off( types, selector || "**", fn );
	}
} );

// Bind a function to a context, optionally partially applying any
// arguments.
// jQuery.proxy is deprecated to promote standards (specifically Function#bind)
// However, it is not slated for removal any time soon
jQuery.proxy = function( fn, context ) {
	var tmp, args, proxy;

	if ( typeof context === "string" ) {
		tmp = fn[ context ];
		context = fn;
		fn = tmp;
	}

	// Quick check to determine if target is callable, in the spec
	// this throws a TypeError, but we will just return undefined.
	if ( !isFunction( fn ) ) {
		return undefined;
	}

	// Simulated bind
	args = slice.call( arguments, 2 );
	proxy = function() {
		return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
	};

	// Set the guid of unique handler to the same of original handler, so it can be removed
	proxy.guid = fn.guid = fn.guid || jQuery.guid++;

	return proxy;
};

jQuery.holdReady = function( hold ) {
	if ( hold ) {
		jQuery.readyWait++;
	} else {
		jQuery.ready( true );
	}
};
jQuery.isArray = Array.isArray;
jQuery.parseJSON = JSON.parse;
jQuery.nodeName = nodeName;
jQuery.isFunction = isFunction;
jQuery.isWindow = isWindow;
jQuery.camelCase = camelCase;
jQuery.type = toType;

jQuery.now = Date.now;

jQuery.isNumeric = function( obj ) {

	// As of jQuery 3.0, isNumeric is limited to
	// strings and numbers (primitives or objects)
	// that can be coerced to finite numbers (gh-2662)
	var type = jQuery.type( obj );
	return ( type === "number" || type === "string" ) &&

		// parseFloat NaNs numeric-cast false positives ("")
		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
		// subtraction forces infinities to NaN
		!isNaN( obj - parseFloat( obj ) );
};




// Register as a named AMD module, since jQuery can be concatenated with other
// files that may use define, but not via a proper concatenation script that
// understands anonymous AMD modules. A named AMD is safest and most robust
// way to register. Lowercase jquery is used because AMD module names are
// derived from file names, and jQuery is normally delivered in a lowercase
// file name. Do this after creating the global so that if an AMD module wants
// to call noConflict to hide this version of jQuery, it will work.

// Note that for maximum portability, libraries that are not jQuery should
// declare themselves as anonymous modules, and avoid setting a global if an
// AMD loader is present. jQuery is a special case. For more information, see
// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon

if ( true ) {
	!(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
		return jQuery;
	}).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
}




var

	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$;

jQuery.noConflict = function( deep ) {
	if ( window.$ === jQuery ) {
		window.$ = _$;
	}

	if ( deep && window.jQuery === jQuery ) {
		window.jQuery = _jQuery;
	}

	return jQuery;
};

// Expose jQuery and $ identifiers, even in AMD
// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
// and CommonJS for browser emulators (#13566)
if ( !noGlobal ) {
	window.jQuery = window.$ = jQuery;
}




return jQuery;
} );


/***/ }),
/* 85 */,
/* 86 */
/*!***********************************!*\
  !*** (webpack)/buildin/global.js ***!
  \***********************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

var g;

// This works in non-strict mode
g = (function() {
	return this;
})();

try {
	// This works if eval is allowed (see CSP)
	g = g || Function("return this")() || (1, eval)("this");
} catch (e) {
	// This works if the window reference is available
	if (typeof window === "object") g = window;
}

// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}

module.exports = g;


/***/ }),
/* 87 */,
/* 88 */,
/* 89 */,
/* 90 */
/*!********************************************************!*\
  !*** ./node_modules/jszip/lib/stream/GenericWorker.js ***!
  \********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


/**
 * A worker that does nothing but passing chunks to the next one. This is like
 * a nodejs stream but with some differences. On the good side :
 * - it works on IE 6-9 without any issue / polyfill
 * - it weights less than the full dependencies bundled with browserify
 * - it forwards errors (no need to declare an error handler EVERYWHERE)
 *
 * A chunk is an object with 2 attributes : `meta` and `data`. The former is an
 * object containing anything (`percent` for example), see each worker for more
 * details. The latter is the real data (String, Uint8Array, etc).
 *
 * @constructor
 * @param {String} name the name of the stream (mainly used for debugging purposes)
 */
function GenericWorker(name) {
    // the name of the worker
    this.name = name || "default";
    // an object containing metadata about the workers chain
    this.streamInfo = {};
    // an error which happened when the worker was paused
    this.generatedError = null;
    // an object containing metadata to be merged by this worker into the general metadata
    this.extraStreamInfo = {};
    // true if the stream is paused (and should not do anything), false otherwise
    this.isPaused = true;
    // true if the stream is finished (and should not do anything), false otherwise
    this.isFinished = false;
    // true if the stream is locked to prevent further structure updates (pipe), false otherwise
    this.isLocked = false;
    // the event listeners
    this._listeners = {
        'data':[],
        'end':[],
        'error':[]
    };
    // the previous worker, if any
    this.previous = null;
}

GenericWorker.prototype = {
    /**
     * Push a chunk to the next workers.
     * @param {Object} chunk the chunk to push
     */
    push : function (chunk) {
        this.emit("data", chunk);
    },
    /**
     * End the stream.
     * @return {Boolean} true if this call ended the worker, false otherwise.
     */
    end : function () {
        if (this.isFinished) {
            return false;
        }

        this.flush();
        try {
            this.emit("end");
            this.cleanUp();
            this.isFinished = true;
        } catch (e) {
            this.emit("error", e);
        }
        return true;
    },
    /**
     * End the stream with an error.
     * @param {Error} e the error which caused the premature end.
     * @return {Boolean} true if this call ended the worker with an error, false otherwise.
     */
    error : function (e) {
        if (this.isFinished) {
            return false;
        }

        if(this.isPaused) {
            this.generatedError = e;
        } else {
            this.isFinished = true;

            this.emit("error", e);

            // in the workers chain exploded in the middle of the chain,
            // the error event will go downward but we also need to notify
            // workers upward that there has been an error.
            if(this.previous) {
                this.previous.error(e);
            }

            this.cleanUp();
        }
        return true;
    },
    /**
     * Add a callback on an event.
     * @param {String} name the name of the event (data, end, error)
     * @param {Function} listener the function to call when the event is triggered
     * @return {GenericWorker} the current object for chainability
     */
    on : function (name, listener) {
        this._listeners[name].push(listener);
        return this;
    },
    /**
     * Clean any references when a worker is ending.
     */
    cleanUp : function () {
        this.streamInfo = this.generatedError = this.extraStreamInfo = null;
        this._listeners = [];
    },
    /**
     * Trigger an event. This will call registered callback with the provided arg.
     * @param {String} name the name of the event (data, end, error)
     * @param {Object} arg the argument to call the callback with.
     */
    emit : function (name, arg) {
        if (this._listeners[name]) {
            for(var i = 0; i < this._listeners[name].length; i++) {
                this._listeners[name][i].call(this, arg);
            }
        }
    },
    /**
     * Chain a worker with an other.
     * @param {Worker} next the worker receiving events from the current one.
     * @return {worker} the next worker for chainability
     */
    pipe : function (next) {
        return next.registerPrevious(this);
    },
    /**
     * Same as `pipe` in the other direction.
     * Using an API with `pipe(next)` is very easy.
     * Implementing the API with the point of view of the next one registering
     * a source is easier, see the ZipFileWorker.
     * @param {Worker} previous the previous worker, sending events to this one
     * @return {Worker} the current worker for chainability
     */
    registerPrevious : function (previous) {
        if (this.isLocked) {
            throw new Error("The stream '" + this + "' has already been used.");
        }

        // sharing the streamInfo...
        this.streamInfo = previous.streamInfo;
        // ... and adding our own bits
        this.mergeStreamInfo();
        this.previous =  previous;
        var self = this;
        previous.on('data', function (chunk) {
            self.processChunk(chunk);
        });
        previous.on('end', function () {
            self.end();
        });
        previous.on('error', function (e) {
            self.error(e);
        });
        return this;
    },
    /**
     * Pause the stream so it doesn't send events anymore.
     * @return {Boolean} true if this call paused the worker, false otherwise.
     */
    pause : function () {
        if(this.isPaused || this.isFinished) {
            return false;
        }
        this.isPaused = true;

        if(this.previous) {
            this.previous.pause();
        }
        return true;
    },
    /**
     * Resume a paused stream.
     * @return {Boolean} true if this call resumed the worker, false otherwise.
     */
    resume : function () {
        if(!this.isPaused || this.isFinished) {
            return false;
        }
        this.isPaused = false;

        // if true, the worker tried to resume but failed
        var withError = false;
        if(this.generatedError) {
            this.error(this.generatedError);
            withError = true;
        }
        if(this.previous) {
            this.previous.resume();
        }

        return !withError;
    },
    /**
     * Flush any remaining bytes as the stream is ending.
     */
    flush : function () {},
    /**
     * Process a chunk. This is usually the method overridden.
     * @param {Object} chunk the chunk to process.
     */
    processChunk : function(chunk) {
        this.push(chunk);
    },
    /**
     * Add a key/value to be added in the workers chain streamInfo once activated.
     * @param {String} key the key to use
     * @param {Object} value the associated value
     * @return {Worker} the current worker for chainability
     */
    withStreamInfo : function (key, value) {
        this.extraStreamInfo[key] = value;
        this.mergeStreamInfo();
        return this;
    },
    /**
     * Merge this worker's streamInfo into the chain's streamInfo.
     */
    mergeStreamInfo : function () {
        for(var key in this.extraStreamInfo) {
            if (!this.extraStreamInfo.hasOwnProperty(key)) {
                continue;
            }
            this.streamInfo[key] = this.extraStreamInfo[key];
        }
    },

    /**
     * Lock the stream to prevent further updates on the workers chain.
     * After calling this method, all calls to pipe will fail.
     */
    lock: function () {
        if (this.isLocked) {
            throw new Error("The stream '" + this + "' has already been used.");
        }
        this.isLocked = true;
        if (this.previous) {
            this.previous.lock();
        }
    },

    /**
     *
     * Pretty print the workers chain.
     */
    toString : function () {
        var me = "Worker " + this.name;
        if (this.previous) {
            return this.previous + " -> " + me;
        } else {
            return me;
        }
    }
};

module.exports = GenericWorker;


/***/ }),
/* 91 */,
/* 92 */,
/* 93 */,
/* 94 */,
/* 95 */,
/* 96 */,
/* 97 */,
/* 98 */,
/* 99 */,
/* 100 */,
/* 101 */,
/* 102 */,
/* 103 */,
/* 104 */,
/* 105 */,
/* 106 */,
/* 107 */,
/* 108 */,
/* 109 */,
/* 110 */,
/* 111 */,
/* 112 */
/*!***********************************************!*\
  !*** ./node_modules/pako/lib/utils/common.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";



var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
                (typeof Uint16Array !== 'undefined') &&
                (typeof Int32Array !== 'undefined');

function _has(obj, key) {
  return Object.prototype.hasOwnProperty.call(obj, key);
}

exports.assign = function (obj /*from1, from2, from3, ...*/) {
  var sources = Array.prototype.slice.call(arguments, 1);
  while (sources.length) {
    var source = sources.shift();
    if (!source) { continue; }

    if (typeof source !== 'object') {
      throw new TypeError(source + 'must be non-object');
    }

    for (var p in source) {
      if (_has(source, p)) {
        obj[p] = source[p];
      }
    }
  }

  return obj;
};


// reduce buffer size, avoiding mem copy
exports.shrinkBuf = function (buf, size) {
  if (buf.length === size) { return buf; }
  if (buf.subarray) { return buf.subarray(0, size); }
  buf.length = size;
  return buf;
};


var fnTyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    if (src.subarray && dest.subarray) {
      dest.set(src.subarray(src_offs, src_offs + len), dest_offs);
      return;
    }
    // Fallback to ordinary array
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    var i, l, len, pos, chunk, result;

    // calculate data length
    len = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      len += chunks[i].length;
    }

    // join chunks
    result = new Uint8Array(len);
    pos = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      chunk = chunks[i];
      result.set(chunk, pos);
      pos += chunk.length;
    }

    return result;
  }
};

var fnUntyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    return [].concat.apply([], chunks);
  }
};


// Enable/Disable typed arrays use, for testing
//
exports.setTyped = function (on) {
  if (on) {
    exports.Buf8  = Uint8Array;
    exports.Buf16 = Uint16Array;
    exports.Buf32 = Int32Array;
    exports.assign(exports, fnTyped);
  } else {
    exports.Buf8  = Array;
    exports.Buf16 = Array;
    exports.Buf32 = Array;
    exports.assign(exports, fnUntyped);
  }
};

exports.setTyped(TYPED_OK);


/***/ }),
/* 113 */
/*!*******************************************!*\
  !*** ./node_modules/jszip/lib/support.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(Buffer) {

exports.base64 = true;
exports.array = true;
exports.string = true;
exports.arraybuffer = typeof ArrayBuffer !== "undefined" && typeof Uint8Array !== "undefined";
exports.nodebuffer = typeof Buffer !== "undefined";
// contains true if JSZip can read/generate Uint8Array, false otherwise.
exports.uint8array = typeof Uint8Array !== "undefined";

if (typeof ArrayBuffer === "undefined") {
    exports.blob = false;
}
else {
    var buffer = new ArrayBuffer(0);
    try {
        exports.blob = new Blob([buffer], {
            type: "application/zip"
        }).size === 0;
    }
    catch (e) {
        try {
            var Builder = self.BlobBuilder || self.WebKitBlobBuilder || self.MozBlobBuilder || self.MSBlobBuilder;
            var builder = new Builder();
            builder.append(buffer);
            exports.blob = builder.getBlob('application/zip').size === 0;
        }
        catch (e) {
            exports.blob = false;
        }
    }
}

try {
    exports.nodestream = !!__webpack_require__(/*! readable-stream */ 235).Readable;
} catch(e) {
    exports.nodestream = false;
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../buffer/index.js */ 145).Buffer))

/***/ }),
/* 114 */,
/* 115 */,
/* 116 */,
/* 117 */,
/* 118 */,
/* 119 */,
/* 120 */,
/* 121 */,
/* 122 */,
/* 123 */
/*!************************************************************!*\
  !*** ./node_modules/readable-stream/lib/_stream_duplex.js ***!
  \************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.



/*<replacement>*/

var processNextTick = __webpack_require__(/*! process-nextick-args */ 157).nextTick;
/*</replacement>*/

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    keys.push(key);
  }return keys;
};
/*</replacement>*/

module.exports = Duplex;

/*<replacement>*/
var util = __webpack_require__(/*! core-util-is */ 144);
util.inherits = __webpack_require__(/*! inherits */ 124);
/*</replacement>*/

var Readable = __webpack_require__(/*! ./_stream_readable */ 234);
var Writable = __webpack_require__(/*! ./_stream_writable */ 188);

util.inherits(Duplex, Readable);

var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
  var method = keys[v];
  if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false) this.readable = false;

  if (options && options.writable === false) this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended) return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  processNextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }
    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});

Duplex.prototype._destroy = function (err, cb) {
  this.push(null);
  this.end();

  processNextTick(cb, err);
};

function forEach(xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

/***/ }),
/* 124 */
/*!***************************************************!*\
  !*** ./node_modules/inherits/inherits_browser.js ***!
  \***************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}


/***/ }),
/* 125 */,
/* 126 */,
/* 127 */,
/* 128 */,
/* 129 */,
/* 130 */,
/* 131 */,
/* 132 */
/*!****************************************!*\
  !*** ./node_modules/jszip/lib/utf8.js ***!
  \****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ./utils */ 60);
var support = __webpack_require__(/*! ./support */ 113);
var nodejsUtils = __webpack_require__(/*! ./nodejsUtils */ 155);
var GenericWorker = __webpack_require__(/*! ./stream/GenericWorker */ 90);

/**
 * The following functions come from pako, from pako/lib/utils/strings
 * released under the MIT license, see pako https://github.com/nodeca/pako/
 */

// Table with utf8 lengths (calculated by first byte of sequence)
// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
// because max possible codepoint is 0x10ffff
var _utf8len = new Array(256);
for (var i=0; i<256; i++) {
  _utf8len[i] = (i >= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1);
}
_utf8len[254]=_utf8len[254]=1; // Invalid sequence start

// convert string to array (typed, when possible)
var string2buf = function (str) {
    var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;

    // count binary size
    for (m_pos = 0; m_pos < str_len; m_pos++) {
        c = str.charCodeAt(m_pos);
        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
            c2 = str.charCodeAt(m_pos+1);
            if ((c2 & 0xfc00) === 0xdc00) {
                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
                m_pos++;
            }
        }
        buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
    }

    // allocate buffer
    if (support.uint8array) {
        buf = new Uint8Array(buf_len);
    } else {
        buf = new Array(buf_len);
    }

    // convert
    for (i=0, m_pos = 0; i < buf_len; m_pos++) {
        c = str.charCodeAt(m_pos);
        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
            c2 = str.charCodeAt(m_pos+1);
            if ((c2 & 0xfc00) === 0xdc00) {
                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
                m_pos++;
            }
        }
        if (c < 0x80) {
            /* one byte */
            buf[i++] = c;
        } else if (c < 0x800) {
            /* two bytes */
            buf[i++] = 0xC0 | (c >>> 6);
            buf[i++] = 0x80 | (c & 0x3f);
        } else if (c < 0x10000) {
            /* three bytes */
            buf[i++] = 0xE0 | (c >>> 12);
            buf[i++] = 0x80 | (c >>> 6 & 0x3f);
            buf[i++] = 0x80 | (c & 0x3f);
        } else {
            /* four bytes */
            buf[i++] = 0xf0 | (c >>> 18);
            buf[i++] = 0x80 | (c >>> 12 & 0x3f);
            buf[i++] = 0x80 | (c >>> 6 & 0x3f);
            buf[i++] = 0x80 | (c & 0x3f);
        }
    }

    return buf;
};

// Calculate max possible position in utf8 buffer,
// that will not break sequence. If that's not possible
// - (very small limits) return max size as is.
//
// buf[] - utf8 bytes array
// max   - length limit (mandatory);
var utf8border = function(buf, max) {
    var pos;

    max = max || buf.length;
    if (max > buf.length) { max = buf.length; }

    // go back from last position, until start of sequence found
    pos = max-1;
    while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }

    // Fuckup - very small and broken sequence,
    // return max, because we should return something anyway.
    if (pos < 0) { return max; }

    // If we came to start of buffer - that means vuffer is too small,
    // return max too.
    if (pos === 0) { return max; }

    return (pos + _utf8len[buf[pos]] > max) ? pos : max;
};

// convert array to string
var buf2string = function (buf) {
    var str, i, out, c, c_len;
    var len = buf.length;

    // Reserve max possible length (2 words per char)
    // NB: by unknown reasons, Array is significantly faster for
    //     String.fromCharCode.apply than Uint16Array.
    var utf16buf = new Array(len*2);

    for (out=0, i=0; i<len;) {
        c = buf[i++];
        // quick process ascii
        if (c < 0x80) { utf16buf[out++] = c; continue; }

        c_len = _utf8len[c];
        // skip 5 & 6 byte codes
        if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }

        // apply mask on first byte
        c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
        // join the rest
        while (c_len > 1 && i < len) {
            c = (c << 6) | (buf[i++] & 0x3f);
            c_len--;
        }

        // terminated by end of string?
        if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }

        if (c < 0x10000) {
            utf16buf[out++] = c;
        } else {
            c -= 0x10000;
            utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
            utf16buf[out++] = 0xdc00 | (c & 0x3ff);
        }
    }

    // shrinkBuf(utf16buf, out)
    if (utf16buf.length !== out) {
        if(utf16buf.subarray) {
            utf16buf = utf16buf.subarray(0, out);
        } else {
            utf16buf.length = out;
        }
    }

    // return String.fromCharCode.apply(null, utf16buf);
    return utils.applyFromCharCode(utf16buf);
};


// That's all for the pako functions.


/**
 * Transform a javascript string into an array (typed if possible) of bytes,
 * UTF-8 encoded.
 * @param {String} str the string to encode
 * @return {Array|Uint8Array|Buffer} the UTF-8 encoded string.
 */
exports.utf8encode = function utf8encode(str) {
    if (support.nodebuffer) {
        return nodejsUtils.newBufferFrom(str, "utf-8");
    }

    return string2buf(str);
};


/**
 * Transform a bytes array (or a representation) representing an UTF-8 encoded
 * string into a javascript string.
 * @param {Array|Uint8Array|Buffer} buf the data de decode
 * @return {String} the decoded string.
 */
exports.utf8decode = function utf8decode(buf) {
    if (support.nodebuffer) {
        return utils.transformTo("nodebuffer", buf).toString("utf-8");
    }

    buf = utils.transformTo(support.uint8array ? "uint8array" : "array", buf);

    return buf2string(buf);
};

/**
 * A worker to decode utf8 encoded binary chunks into string chunks.
 * @constructor
 */
function Utf8DecodeWorker() {
    GenericWorker.call(this, "utf-8 decode");
    // the last bytes if a chunk didn't end with a complete codepoint.
    this.leftOver = null;
}
utils.inherits(Utf8DecodeWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
Utf8DecodeWorker.prototype.processChunk = function (chunk) {

    var data = utils.transformTo(support.uint8array ? "uint8array" : "array", chunk.data);

    // 1st step, re-use what's left of the previous chunk
    if (this.leftOver && this.leftOver.length) {
        if(support.uint8array) {
            var previousData = data;
            data = new Uint8Array(previousData.length + this.leftOver.length);
            data.set(this.leftOver, 0);
            data.set(previousData, this.leftOver.length);
        } else {
            data = this.leftOver.concat(data);
        }
        this.leftOver = null;
    }

    var nextBoundary = utf8border(data);
    var usableData = data;
    if (nextBoundary !== data.length) {
        if (support.uint8array) {
            usableData = data.subarray(0, nextBoundary);
            this.leftOver = data.subarray(nextBoundary, data.length);
        } else {
            usableData = data.slice(0, nextBoundary);
            this.leftOver = data.slice(nextBoundary, data.length);
        }
    }

    this.push({
        data : exports.utf8decode(usableData),
        meta : chunk.meta
    });
};

/**
 * @see GenericWorker.flush
 */
Utf8DecodeWorker.prototype.flush = function () {
    if(this.leftOver && this.leftOver.length) {
        this.push({
            data : exports.utf8decode(this.leftOver),
            meta : {}
        });
        this.leftOver = null;
    }
};
exports.Utf8DecodeWorker = Utf8DecodeWorker;

/**
 * A worker to endcode string chunks into utf8 encoded binary chunks.
 * @constructor
 */
function Utf8EncodeWorker() {
    GenericWorker.call(this, "utf-8 encode");
}
utils.inherits(Utf8EncodeWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
Utf8EncodeWorker.prototype.processChunk = function (chunk) {
    this.push({
        data : exports.utf8encode(chunk.data),
        meta : chunk.meta
    });
};
exports.Utf8EncodeWorker = Utf8EncodeWorker;


/***/ }),
/* 133 */
/*!***************************************!*\
  !*** ./node_modules/events/events.js ***!
  \***************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      } else {
        // At least give some kind of context to the user
        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
        err.context = er;
        throw err;
      }
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        args = Array.prototype.slice.call(arguments, 1);
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    args = Array.prototype.slice.call(arguments, 1);
    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else if (listeners) {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.prototype.listenerCount = function(type) {
  if (this._events) {
    var evlistener = this._events[type];

    if (isFunction(evlistener))
      return 1;
    else if (evlistener)
      return evlistener.length;
  }
  return 0;
};

EventEmitter.listenerCount = function(emitter, type) {
  return emitter.listenerCount(type);
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}


/***/ }),
/* 134 */,
/* 135 */,
/* 136 */,
/* 137 */,
/* 138 */,
/* 139 */,
/* 140 */,
/* 141 */,
/* 142 */
/*!********************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/util.js ***!
  \********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

/**
 * This is a helper function for getting values from parameter/options
 * objects.
 *
 * @param args The object we are extracting values from
 * @param name The name of the property we are getting.
 * @param defaultValue An optional value to return if the property is missing
 * from the object. If this is not specified and the property is missing, an
 * error will be thrown.
 */
function getArg(aArgs, aName, aDefaultValue) {
  if (aName in aArgs) {
    return aArgs[aName];
  } else if (arguments.length === 3) {
    return aDefaultValue;
  } else {
    throw new Error('"' + aName + '" is a required argument.');
  }
}
exports.getArg = getArg;

var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.-]*)(?::(\d+))?(.*)$/;
var dataUrlRegexp = /^data:.+\,.+$/;

function urlParse(aUrl) {
  var match = aUrl.match(urlRegexp);
  if (!match) {
    return null;
  }
  return {
    scheme: match[1],
    auth: match[2],
    host: match[3],
    port: match[4],
    path: match[5]
  };
}
exports.urlParse = urlParse;

function urlGenerate(aParsedUrl) {
  var url = '';
  if (aParsedUrl.scheme) {
    url += aParsedUrl.scheme + ':';
  }
  url += '//';
  if (aParsedUrl.auth) {
    url += aParsedUrl.auth + '@';
  }
  if (aParsedUrl.host) {
    url += aParsedUrl.host;
  }
  if (aParsedUrl.port) {
    url += ":" + aParsedUrl.port
  }
  if (aParsedUrl.path) {
    url += aParsedUrl.path;
  }
  return url;
}
exports.urlGenerate = urlGenerate;

/**
 * Normalizes a path, or the path portion of a URL:
 *
 * - Replaces consecutive slashes with one slash.
 * - Removes unnecessary '.' parts.
 * - Removes unnecessary '<dir>/..' parts.
 *
 * Based on code in the Node.js 'path' core module.
 *
 * @param aPath The path or url to normalize.
 */
function normalize(aPath) {
  var path = aPath;
  var url = urlParse(aPath);
  if (url) {
    if (!url.path) {
      return aPath;
    }
    path = url.path;
  }
  var isAbsolute = exports.isAbsolute(path);

  var parts = path.split(/\/+/);
  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
    part = parts[i];
    if (part === '.') {
      parts.splice(i, 1);
    } else if (part === '..') {
      up++;
    } else if (up > 0) {
      if (part === '') {
        // The first part is blank if the path is absolute. Trying to go
        // above the root is a no-op. Therefore we can remove all '..' parts
        // directly after the root.
        parts.splice(i + 1, up);
        up = 0;
      } else {
        parts.splice(i, 2);
        up--;
      }
    }
  }
  path = parts.join('/');

  if (path === '') {
    path = isAbsolute ? '/' : '.';
  }

  if (url) {
    url.path = path;
    return urlGenerate(url);
  }
  return path;
}
exports.normalize = normalize;

/**
 * Joins two paths/URLs.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be joined with the root.
 *
 * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
 *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
 *   first.
 * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
 *   is updated with the result and aRoot is returned. Otherwise the result
 *   is returned.
 *   - If aPath is absolute, the result is aPath.
 *   - Otherwise the two paths are joined with a slash.
 * - Joining for example 'http://' and 'www.example.com' is also supported.
 */
function join(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }
  if (aPath === "") {
    aPath = ".";
  }
  var aPathUrl = urlParse(aPath);
  var aRootUrl = urlParse(aRoot);
  if (aRootUrl) {
    aRoot = aRootUrl.path || '/';
  }

  // `join(foo, '//www.example.org')`
  if (aPathUrl && !aPathUrl.scheme) {
    if (aRootUrl) {
      aPathUrl.scheme = aRootUrl.scheme;
    }
    return urlGenerate(aPathUrl);
  }

  if (aPathUrl || aPath.match(dataUrlRegexp)) {
    return aPath;
  }

  // `join('http://', 'www.example.com')`
  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
    aRootUrl.host = aPath;
    return urlGenerate(aRootUrl);
  }

  var joined = aPath.charAt(0) === '/'
    ? aPath
    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

  if (aRootUrl) {
    aRootUrl.path = joined;
    return urlGenerate(aRootUrl);
  }
  return joined;
}
exports.join = join;

exports.isAbsolute = function (aPath) {
  return aPath.charAt(0) === '/' || urlRegexp.test(aPath);
};

/**
 * Make a path relative to a URL or another path.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be made relative to aRoot.
 */
function relative(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }

  aRoot = aRoot.replace(/\/$/, '');

  // It is possible for the path to be above the root. In this case, simply
  // checking whether the root is a prefix of the path won't work. Instead, we
  // need to remove components from the root one by one, until either we find
  // a prefix that fits, or we run out of components to remove.
  var level = 0;
  while (aPath.indexOf(aRoot + '/') !== 0) {
    var index = aRoot.lastIndexOf("/");
    if (index < 0) {
      return aPath;
    }

    // If the only part of the root that is left is the scheme (i.e. http://,
    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
    // have exhausted all components, so the path is not relative to the root.
    aRoot = aRoot.slice(0, index);
    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
      return aPath;
    }

    ++level;
  }

  // Make sure we add a "../" for each component we removed from the root.
  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
}
exports.relative = relative;

var supportsNullProto = (function () {
  var obj = Object.create(null);
  return !('__proto__' in obj);
}());

function identity (s) {
  return s;
}

/**
 * Because behavior goes wacky when you set `__proto__` on objects, we
 * have to prefix all the strings in our set with an arbitrary character.
 *
 * See https://github.com/mozilla/source-map/pull/31 and
 * https://github.com/mozilla/source-map/issues/30
 *
 * @param String aStr
 */
function toSetString(aStr) {
  if (isProtoString(aStr)) {
    return '$' + aStr;
  }

  return aStr;
}
exports.toSetString = supportsNullProto ? identity : toSetString;

function fromSetString(aStr) {
  if (isProtoString(aStr)) {
    return aStr.slice(1);
  }

  return aStr;
}
exports.fromSetString = supportsNullProto ? identity : fromSetString;

function isProtoString(s) {
  if (!s) {
    return false;
  }

  var length = s.length;

  if (length < 9 /* "__proto__".length */) {
    return false;
  }

  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
      s.charCodeAt(length - 9) !== 95  /* '_' */) {
    return false;
  }

  for (var i = length - 10; i >= 0; i--) {
    if (s.charCodeAt(i) !== 36 /* '$' */) {
      return false;
    }
  }

  return true;
}

/**
 * Comparator between two mappings where the original positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same original source/line/column, but different generated
 * line and column the same. Useful when searching for a mapping with a
 * stubbed out mapping.
 */
function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
  var cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0 || onlyCompareOriginal) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByOriginalPositions = compareByOriginalPositions;

/**
 * Comparator between two mappings with deflated source and name indices where
 * the generated positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same generated line and column, but different
 * source/name/original line and column the same. Useful when searching for a
 * mapping with a stubbed out mapping.
 */
function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0 || onlyCompareGenerated) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;

function strcmp(aStr1, aStr2) {
  if (aStr1 === aStr2) {
    return 0;
  }

  if (aStr1 === null) {
    return 1; // aStr2 !== null
  }

  if (aStr2 === null) {
    return -1; // aStr1 !== null
  }

  if (aStr1 > aStr2) {
    return 1;
  }

  return -1;
}

/**
 * Comparator between two mappings with inflated source and name strings where
 * the generated positions are compared.
 */
function compareByGeneratedPositionsInflated(mappingA, mappingB) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;

/**
 * Strip any JSON XSSI avoidance prefix from the string (as documented
 * in the source maps specification), and then parse the string as
 * JSON.
 */
function parseSourceMapInput(str) {
  return JSON.parse(str.replace(/^\)]}'[^\n]*\n/, ''));
}
exports.parseSourceMapInput = parseSourceMapInput;

/**
 * Compute the URL of a source given the the source root, the source's
 * URL, and the source map's URL.
 */
function computeSourceURL(sourceRoot, sourceURL, sourceMapURL) {
  sourceURL = sourceURL || '';

  if (sourceRoot) {
    // This follows what Chrome does.
    if (sourceRoot[sourceRoot.length - 1] !== '/' && sourceURL[0] !== '/') {
      sourceRoot += '/';
    }
    // The spec says:
    //   Line 4: An optional source root, useful for relocating source
    //   files on a server or removing repeated values in the
    //   “sources” entry.  This value is prepended to the individual
    //   entries in the “source” field.
    sourceURL = sourceRoot + sourceURL;
  }

  // Historically, SourceMapConsumer did not take the sourceMapURL as
  // a parameter.  This mode is still somewhat supported, which is why
  // this code block is conditional.  However, it's preferable to pass
  // the source map URL to SourceMapConsumer, so that this function
  // can implement the source URL resolution algorithm as outlined in
  // the spec.  This block is basically the equivalent of:
  //    new URL(sourceURL, sourceMapURL).toString()
  // ... except it avoids using URL, which wasn't available in the
  // older releases of node still supported by this library.
  //
  // The spec says:
  //   If the sources are not absolute URLs after prepending of the
  //   “sourceRoot”, the sources are resolved relative to the
  //   SourceMap (like resolving script src in a html document).
  if (sourceMapURL) {
    var parsed = urlParse(sourceMapURL);
    if (!parsed) {
      throw new Error("sourceMapURL could not be parsed");
    }
    if (parsed.path) {
      // Strip the last path component, but keep the "/".
      var index = parsed.path.lastIndexOf('/');
      if (index >= 0) {
        parsed.path = parsed.path.substring(0, index + 1);
      }
    }
    sourceURL = join(urlGenerate(parsed), sourceURL);
  }

  return normalize(sourceURL);
}
exports.computeSourceURL = computeSourceURL;


/***/ }),
/* 143 */
/*!********************************************!*\
  !*** ./node_modules/jszip/lib/external.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* global Promise */


// load the global object first:
// - it should be better integrated in the system (unhandledRejection in node)
// - the environment may have a custom Promise implementation (see zone.js)
var ES6Promise = null;
if (typeof Promise !== "undefined") {
    ES6Promise = Promise;
} else {
    ES6Promise = __webpack_require__(/*! lie */ 409);
}

/**
 * Let the user use/change some implementations.
 */
module.exports = {
    Promise: ES6Promise
};


/***/ }),
/* 144 */
/*!***********************************************!*\
  !*** ./node_modules/core-util-is/lib/util.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(Buffer) {// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../buffer/index.js */ 145).Buffer))

/***/ }),
/* 145 */
/*!**************************************!*\
  !*** ./node_modules/buffer/index.js ***!
  \**************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(global) {/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */



var base64 = __webpack_require__(/*! base64-js */ 437)
var ieee754 = __webpack_require__(/*! ieee754 */ 436)
var isArray = __webpack_require__(/*! isarray */ 236)

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Due to various browser bugs, sometimes the Object implementation will be used even
 * when the browser supports typed arrays.
 *
 * Note:
 *
 *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
 *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *     incorrect length in some situations.

 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
 * get the Object implementation, which is slower but behaves correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
  ? global.TYPED_ARRAY_SUPPORT
  : typedArraySupport()

/*
 * Export kMaxLength after typed array support is determined.
 */
exports.kMaxLength = kMaxLength()

function typedArraySupport () {
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
    return arr.foo() === 42 && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
}

function kMaxLength () {
  return Buffer.TYPED_ARRAY_SUPPORT
    ? 0x7fffffff
    : 0x3fffffff
}

function createBuffer (that, length) {
  if (kMaxLength() < length) {
    throw new RangeError('Invalid typed array length')
  }
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = new Uint8Array(length)
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    if (that === null) {
      that = new Buffer(length)
    }
    that.length = length
  }

  return that
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
    return new Buffer(arg, encodingOrOffset, length)
  }

  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new Error(
        'If encoding is specified then the first argument must be a string'
      )
    }
    return allocUnsafe(this, arg)
  }
  return from(this, arg, encodingOrOffset, length)
}

Buffer.poolSize = 8192 // not used by this implementation

// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
  arr.__proto__ = Buffer.prototype
  return arr
}

function from (that, value, encodingOrOffset, length) {
  if (typeof value === 'number') {
    throw new TypeError('"value" argument must not be a number')
  }

  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
    return fromArrayBuffer(that, value, encodingOrOffset, length)
  }

  if (typeof value === 'string') {
    return fromString(that, value, encodingOrOffset)
  }

  return fromObject(that, value)
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(null, value, encodingOrOffset, length)
}

if (Buffer.TYPED_ARRAY_SUPPORT) {
  Buffer.prototype.__proto__ = Uint8Array.prototype
  Buffer.__proto__ = Uint8Array
  if (typeof Symbol !== 'undefined' && Symbol.species &&
      Buffer[Symbol.species] === Buffer) {
    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
    Object.defineProperty(Buffer, Symbol.species, {
      value: null,
      configurable: true
    })
  }
}

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be a number')
  } else if (size < 0) {
    throw new RangeError('"size" argument must not be negative')
  }
}

function alloc (that, size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(that, size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(that, size).fill(fill, encoding)
      : createBuffer(that, size).fill(fill)
  }
  return createBuffer(that, size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(null, size, fill, encoding)
}

function allocUnsafe (that, size) {
  assertSize(size)
  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < size; ++i) {
      that[i] = 0
    }
  }
  return that
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(null, size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(null, size)
}

function fromString (that, string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('"encoding" must be a valid string encoding')
  }

  var length = byteLength(string, encoding) | 0
  that = createBuffer(that, length)

  var actual = that.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    that = that.slice(0, actual)
  }

  return that
}

function fromArrayLike (that, array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  that = createBuffer(that, length)
  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

function fromArrayBuffer (that, array, byteOffset, length) {
  array.byteLength // this throws if `array` is not a valid ArrayBuffer

  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('\'offset\' is out of bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('\'length\' is out of bounds')
  }

  if (byteOffset === undefined && length === undefined) {
    array = new Uint8Array(array)
  } else if (length === undefined) {
    array = new Uint8Array(array, byteOffset)
  } else {
    array = new Uint8Array(array, byteOffset, length)
  }

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = array
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    that = fromArrayLike(that, array)
  }
  return that
}

function fromObject (that, obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    that = createBuffer(that, len)

    if (that.length === 0) {
      return that
    }

    obj.copy(that, 0, 0, len)
    return that
  }

  if (obj) {
    if ((typeof ArrayBuffer !== 'undefined' &&
        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
      if (typeof obj.length !== 'number' || isnan(obj.length)) {
        return createBuffer(that, 0)
      }
      return fromArrayLike(that, obj)
    }

    if (obj.type === 'Buffer' && isArray(obj.data)) {
      return fromArrayLike(that, obj.data)
    }
  }

  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}

function checked (length) {
  // Note: cannot use `length < kMaxLength()` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= kMaxLength()) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function compare (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError('Arguments must be Buffers')
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    string = '' + string
  }

  var len = string.length
  if (len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
      case undefined:
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) return utf8ToBytes(string).length // assume utf8
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length | 0
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max) str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (!Buffer.isBuffer(target)) {
    throw new TypeError('Argument must be a Buffer')
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset  // Coerce to Number.
  if (isNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (Buffer.TYPED_ARRAY_SUPPORT &&
        typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset | 0
    if (isFinite(length)) {
      length = length | 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  // legacy write(string, encoding, offset, length) - remove in v0.13
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
      : (firstByte > 0xBF) ? 2
      : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    newBuf = this.subarray(start, end)
    newBuf.__proto__ = Buffer.prototype
  } else {
    var sliceLen = end - start
    newBuf = new Buffer(sliceLen, undefined)
    for (var i = 0; i < sliceLen; ++i) {
      newBuf[i] = this[i + start]
    }
  }

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = (value & 0xff)
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start
  var i

  if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    // ascending copy from start
    for (i = 0; i < len; ++i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, start + len),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if (code < 256) {
        val = code
      }
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : utf8ToBytes(new Buffer(val, encoding).toString())
    var len = bytes.length
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

function isnan (val) {
  return val !== val // eslint-disable-line no-self-compare
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86)))

/***/ }),
/* 146 */
/*!*****************************************!*\
  !*** ./node_modules/process/browser.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };


/***/ }),
/* 147 */,
/* 148 */,
/* 149 */,
/* 150 */,
/* 151 */,
/* 152 */,
/* 153 */,
/* 154 */
/*!****************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_global.js ***!
  \****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global = module.exports = typeof window != 'undefined' && window.Math == Math
  ? window : typeof self != 'undefined' && self.Math == Math ? self : Function('return this')();
if(typeof __g == 'number')__g = global; // eslint-disable-line no-undef

/***/ }),
/* 155 */
/*!***********************************************!*\
  !*** ./node_modules/jszip/lib/nodejsUtils.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(Buffer) {

module.exports = {
    /**
     * True if this is running in Nodejs, will be undefined in a browser.
     * In a browser, browserify won't include this file and the whole module
     * will be resolved an empty object.
     */
    isNode : typeof Buffer !== "undefined",
    /**
     * Create a new nodejs Buffer from an existing content.
     * @param {Object} data the data to pass to the constructor.
     * @param {String} encoding the encoding to use.
     * @return {Buffer} a new Buffer.
     */
    newBufferFrom: function(data, encoding) {
        // XXX We can't use `Buffer.from` which comes from `Uint8Array.from`
        // in nodejs v4 (< v.4.5). It's not the expected implementation (and
        // has a different signature).
        // see https://github.com/nodejs/node/issues/8053
        // A condition on nodejs' version won't solve the issue as we don't
        // control the Buffer polyfills that may or may not be used.
        return new Buffer(data, encoding);
    },
    /**
     * Create a new nodejs Buffer with the specified size.
     * @param {Integer} size the size of the buffer.
     * @return {Buffer} a new Buffer.
     */
    allocBuffer: function (size) {
        if (Buffer.alloc) {
            return Buffer.alloc(size);
        } else {
            return new Buffer(size);
        }
    },
    /**
     * Find out if an object is a Buffer.
     * @param {Object} b the object to test.
     * @return {Boolean} true if the object is a Buffer, false otherwise.
     */
    isBuffer : function(b){
        return Buffer.isBuffer(b);
    },

    isStream : function (obj) {
        return obj &&
            typeof obj.on === "function" &&
            typeof obj.pause === "function" &&
            typeof obj.resume === "function";
    }
};

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../buffer/index.js */ 145).Buffer))

/***/ }),
/* 156 */
/*!*******************************************!*\
  !*** ./node_modules/safe-buffer/index.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* eslint-disable node/no-deprecated-api */
var buffer = __webpack_require__(/*! buffer */ 145)
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}


/***/ }),
/* 157 */
/*!****************************************************!*\
  !*** ./node_modules/process-nextick-args/index.js ***!
  \****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(process) {

if (!process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = { nextTick: nextTick };
} else {
  module.exports = process
}

function nextTick(fn, arg1, arg2, arg3) {
  if (typeof fn !== 'function') {
    throw new TypeError('"callback" argument must be a function');
  }
  var len = arguments.length;
  var args, i;
  switch (len) {
  case 0:
  case 1:
    return process.nextTick(fn);
  case 2:
    return process.nextTick(function afterTickOne() {
      fn.call(null, arg1);
    });
  case 3:
    return process.nextTick(function afterTickTwo() {
      fn.call(null, arg1, arg2);
    });
  case 4:
    return process.nextTick(function afterTickThree() {
      fn.call(null, arg1, arg2, arg3);
    });
  default:
    args = new Array(len - 1);
    i = 0;
    while (i < args.length) {
      args[i++] = arguments[i];
    }
    return process.nextTick(function afterTick() {
      fn.apply(null, args);
    });
  }
}


/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../process/browser.js */ 146)))

/***/ }),
/* 158 */
/*!***********************************************************!*\
  !*** ./node_modules/jshint/node_modules/lodash/lodash.js ***!
  \***********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, module) {var __WEBPACK_AMD_DEFINE_RESULT__;/**
 * @license
 * Lodash <https://lodash.com/>
 * Copyright JS Foundation and other contributors <https://js.foundation/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */
;(function() {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /** Used as the semantic version number. */
  var VERSION = '4.17.11';

  /** Used as the size to enable large array optimizations. */
  var LARGE_ARRAY_SIZE = 200;

  /** Error message constants. */
  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
      FUNC_ERROR_TEXT = 'Expected a function';

  /** Used to stand-in for `undefined` hash values. */
  var HASH_UNDEFINED = '__lodash_hash_undefined__';

  /** Used as the maximum memoize cache size. */
  var MAX_MEMOIZE_SIZE = 500;

  /** Used as the internal argument placeholder. */
  var PLACEHOLDER = '__lodash_placeholder__';

  /** Used to compose bitmasks for cloning. */
  var CLONE_DEEP_FLAG = 1,
      CLONE_FLAT_FLAG = 2,
      CLONE_SYMBOLS_FLAG = 4;

  /** Used to compose bitmasks for value comparisons. */
  var COMPARE_PARTIAL_FLAG = 1,
      COMPARE_UNORDERED_FLAG = 2;

  /** Used to compose bitmasks for function metadata. */
  var WRAP_BIND_FLAG = 1,
      WRAP_BIND_KEY_FLAG = 2,
      WRAP_CURRY_BOUND_FLAG = 4,
      WRAP_CURRY_FLAG = 8,
      WRAP_CURRY_RIGHT_FLAG = 16,
      WRAP_PARTIAL_FLAG = 32,
      WRAP_PARTIAL_RIGHT_FLAG = 64,
      WRAP_ARY_FLAG = 128,
      WRAP_REARG_FLAG = 256,
      WRAP_FLIP_FLAG = 512;

  /** Used as default options for `_.truncate`. */
  var DEFAULT_TRUNC_LENGTH = 30,
      DEFAULT_TRUNC_OMISSION = '...';

  /** Used to detect hot functions by number of calls within a span of milliseconds. */
  var HOT_COUNT = 800,
      HOT_SPAN = 16;

  /** Used to indicate the type of lazy iteratees. */
  var LAZY_FILTER_FLAG = 1,
      LAZY_MAP_FLAG = 2,
      LAZY_WHILE_FLAG = 3;

  /** Used as references for various `Number` constants. */
  var INFINITY = 1 / 0,
      MAX_SAFE_INTEGER = 9007199254740991,
      MAX_INTEGER = 1.7976931348623157e+308,
      NAN = 0 / 0;

  /** Used as references for the maximum length and index of an array. */
  var MAX_ARRAY_LENGTH = 4294967295,
      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

  /** Used to associate wrap methods with their bit flags. */
  var wrapFlags = [
    ['ary', WRAP_ARY_FLAG],
    ['bind', WRAP_BIND_FLAG],
    ['bindKey', WRAP_BIND_KEY_FLAG],
    ['curry', WRAP_CURRY_FLAG],
    ['curryRight', WRAP_CURRY_RIGHT_FLAG],
    ['flip', WRAP_FLIP_FLAG],
    ['partial', WRAP_PARTIAL_FLAG],
    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
    ['rearg', WRAP_REARG_FLAG]
  ];

  /** `Object#toString` result references. */
  var argsTag = '[object Arguments]',
      arrayTag = '[object Array]',
      asyncTag = '[object AsyncFunction]',
      boolTag = '[object Boolean]',
      dateTag = '[object Date]',
      domExcTag = '[object DOMException]',
      errorTag = '[object Error]',
      funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]',
      mapTag = '[object Map]',
      numberTag = '[object Number]',
      nullTag = '[object Null]',
      objectTag = '[object Object]',
      promiseTag = '[object Promise]',
      proxyTag = '[object Proxy]',
      regexpTag = '[object RegExp]',
      setTag = '[object Set]',
      stringTag = '[object String]',
      symbolTag = '[object Symbol]',
      undefinedTag = '[object Undefined]',
      weakMapTag = '[object WeakMap]',
      weakSetTag = '[object WeakSet]';

  var arrayBufferTag = '[object ArrayBuffer]',
      dataViewTag = '[object DataView]',
      float32Tag = '[object Float32Array]',
      float64Tag = '[object Float64Array]',
      int8Tag = '[object Int8Array]',
      int16Tag = '[object Int16Array]',
      int32Tag = '[object Int32Array]',
      uint8Tag = '[object Uint8Array]',
      uint8ClampedTag = '[object Uint8ClampedArray]',
      uint16Tag = '[object Uint16Array]',
      uint32Tag = '[object Uint32Array]';

  /** Used to match empty string literals in compiled template source. */
  var reEmptyStringLeading = /\b__p \+= '';/g,
      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

  /** Used to match HTML entities and HTML characters. */
  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
      reUnescapedHtml = /[&<>"']/g,
      reHasEscapedHtml = RegExp(reEscapedHtml.source),
      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

  /** Used to match template delimiters. */
  var reEscape = /<%-([\s\S]+?)%>/g,
      reEvaluate = /<%([\s\S]+?)%>/g,
      reInterpolate = /<%=([\s\S]+?)%>/g;

  /** Used to match property names within property paths. */
  var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
      reIsPlainProp = /^\w*$/,
      rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

  /**
   * Used to match `RegExp`
   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
   */
  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
      reHasRegExpChar = RegExp(reRegExpChar.source);

  /** Used to match leading and trailing whitespace. */
  var reTrim = /^\s+|\s+$/g,
      reTrimStart = /^\s+/,
      reTrimEnd = /\s+$/;

  /** Used to match wrap detail comments. */
  var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
      reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
      reSplitDetails = /,? & /;

  /** Used to match words composed of alphanumeric characters. */
  var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

  /** Used to match backslashes in property paths. */
  var reEscapeChar = /\\(\\)?/g;

  /**
   * Used to match
   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
   */
  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

  /** Used to match `RegExp` flags from their coerced string values. */
  var reFlags = /\w*$/;

  /** Used to detect bad signed hexadecimal string values. */
  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

  /** Used to detect binary string values. */
  var reIsBinary = /^0b[01]+$/i;

  /** Used to detect host constructors (Safari). */
  var reIsHostCtor = /^\[object .+?Constructor\]$/;

  /** Used to detect octal string values. */
  var reIsOctal = /^0o[0-7]+$/i;

  /** Used to detect unsigned integer values. */
  var reIsUint = /^(?:0|[1-9]\d*)$/;

  /** Used to match Latin Unicode letters (excluding mathematical operators). */
  var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

  /** Used to ensure capturing order of template delimiters. */
  var reNoMatch = /($^)/;

  /** Used to match unescaped characters in compiled string literals. */
  var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

  /** Used to compose unicode character classes. */
  var rsAstralRange = '\\ud800-\\udfff',
      rsComboMarksRange = '\\u0300-\\u036f',
      reComboHalfMarksRange = '\\ufe20-\\ufe2f',
      rsComboSymbolsRange = '\\u20d0-\\u20ff',
      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
      rsDingbatRange = '\\u2700-\\u27bf',
      rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
      rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
      rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
      rsPunctuationRange = '\\u2000-\\u206f',
      rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
      rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
      rsVarRange = '\\ufe0e\\ufe0f',
      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

  /** Used to compose unicode capture groups. */
  var rsApos = "['\u2019]",
      rsAstral = '[' + rsAstralRange + ']',
      rsBreak = '[' + rsBreakRange + ']',
      rsCombo = '[' + rsComboRange + ']',
      rsDigits = '\\d+',
      rsDingbat = '[' + rsDingbatRange + ']',
      rsLower = '[' + rsLowerRange + ']',
      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
      rsFitz = '\\ud83c[\\udffb-\\udfff]',
      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
      rsNonAstral = '[^' + rsAstralRange + ']',
      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
      rsUpper = '[' + rsUpperRange + ']',
      rsZWJ = '\\u200d';

  /** Used to compose unicode regexes. */
  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
      reOptMod = rsModifier + '?',
      rsOptVar = '[' + rsVarRange + ']?',
      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
      rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
      rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
      rsSeq = rsOptVar + reOptMod + rsOptJoin,
      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

  /** Used to match apostrophes. */
  var reApos = RegExp(rsApos, 'g');

  /**
   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
   */
  var reComboMark = RegExp(rsCombo, 'g');

  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

  /** Used to match complex or compound words. */
  var reUnicodeWord = RegExp([
    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
    rsUpper + '+' + rsOptContrUpper,
    rsOrdUpper,
    rsOrdLower,
    rsDigits,
    rsEmoji
  ].join('|'), 'g');

  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');

  /** Used to detect strings that need a more robust regexp to match words. */
  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

  /** Used to assign default `context` object properties. */
  var contextProps = [
    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
  ];

  /** Used to make template sourceURLs easier to identify. */
  var templateCounter = -1;

  /** Used to identify `toStringTag` values of typed arrays. */
  var typedArrayTags = {};
  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
  typedArrayTags[uint32Tag] = true;
  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
  typedArrayTags[errorTag] = typedArrayTags[funcTag] =
  typedArrayTags[mapTag] = typedArrayTags[numberTag] =
  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
  typedArrayTags[setTag] = typedArrayTags[stringTag] =
  typedArrayTags[weakMapTag] = false;

  /** Used to identify `toStringTag` values supported by `_.clone`. */
  var cloneableTags = {};
  cloneableTags[argsTag] = cloneableTags[arrayTag] =
  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
  cloneableTags[boolTag] = cloneableTags[dateTag] =
  cloneableTags[float32Tag] = cloneableTags[float64Tag] =
  cloneableTags[int8Tag] = cloneableTags[int16Tag] =
  cloneableTags[int32Tag] = cloneableTags[mapTag] =
  cloneableTags[numberTag] = cloneableTags[objectTag] =
  cloneableTags[regexpTag] = cloneableTags[setTag] =
  cloneableTags[stringTag] = cloneableTags[symbolTag] =
  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
  cloneableTags[errorTag] = cloneableTags[funcTag] =
  cloneableTags[weakMapTag] = false;

  /** Used to map Latin Unicode letters to basic Latin letters. */
  var deburredLetters = {
    // Latin-1 Supplement block.
    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
    '\xc7': 'C',  '\xe7': 'c',
    '\xd0': 'D',  '\xf0': 'd',
    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
    '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
    '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
    '\xd1': 'N',  '\xf1': 'n',
    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
    '\xc6': 'Ae', '\xe6': 'ae',
    '\xde': 'Th', '\xfe': 'th',
    '\xdf': 'ss',
    // Latin Extended-A block.
    '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
    '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
    '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
    '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
    '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
    '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
    '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
    '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
    '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
    '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
    '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
    '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
    '\u0134': 'J',  '\u0135': 'j',
    '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
    '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
    '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
    '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
    '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
    '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
    '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
    '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
    '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
    '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
    '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
    '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
    '\u0163': 't',  '\u0165': 't', '\u0167': 't',
    '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
    '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
    '\u0174': 'W',  '\u0175': 'w',
    '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
    '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
    '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
    '\u0132': 'IJ', '\u0133': 'ij',
    '\u0152': 'Oe', '\u0153': 'oe',
    '\u0149': "'n", '\u017f': 's'
  };

  /** Used to map characters to HTML entities. */
  var htmlEscapes = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;'
  };

  /** Used to map HTML entities to characters. */
  var htmlUnescapes = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&quot;': '"',
    '&#39;': "'"
  };

  /** Used to escape characters for inclusion in compiled string literals. */
  var stringEscapes = {
    '\\': '\\',
    "'": "'",
    '\n': 'n',
    '\r': 'r',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  /** Built-in method references without a dependency on `root`. */
  var freeParseFloat = parseFloat,
      freeParseInt = parseInt;

  /** Detect free variable `global` from Node.js. */
  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

  /** Detect free variable `self`. */
  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

  /** Used as a reference to the global object. */
  var root = freeGlobal || freeSelf || Function('return this')();

  /** Detect free variable `exports`. */
  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

  /** Detect free variable `module`. */
  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

  /** Detect the popular CommonJS extension `module.exports`. */
  var moduleExports = freeModule && freeModule.exports === freeExports;

  /** Detect free variable `process` from Node.js. */
  var freeProcess = moduleExports && freeGlobal.process;

  /** Used to access faster Node.js helpers. */
  var nodeUtil = (function() {
    try {
      // Use `util.types` for Node.js 10+.
      var types = freeModule && freeModule.require && freeModule.require('util').types;

      if (types) {
        return types;
      }

      // Legacy `process.binding('util')` for Node.js < 10.
      return freeProcess && freeProcess.binding && freeProcess.binding('util');
    } catch (e) {}
  }());

  /* Node.js helper references. */
  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
      nodeIsDate = nodeUtil && nodeUtil.isDate,
      nodeIsMap = nodeUtil && nodeUtil.isMap,
      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
      nodeIsSet = nodeUtil && nodeUtil.isSet,
      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

  /*--------------------------------------------------------------------------*/

  /**
   * A faster alternative to `Function#apply`, this function invokes `func`
   * with the `this` binding of `thisArg` and the arguments of `args`.
   *
   * @private
   * @param {Function} func The function to invoke.
   * @param {*} thisArg The `this` binding of `func`.
   * @param {Array} args The arguments to invoke `func` with.
   * @returns {*} Returns the result of `func`.
   */
  function apply(func, thisArg, args) {
    switch (args.length) {
      case 0: return func.call(thisArg);
      case 1: return func.call(thisArg, args[0]);
      case 2: return func.call(thisArg, args[0], args[1]);
      case 3: return func.call(thisArg, args[0], args[1], args[2]);
    }
    return func.apply(thisArg, args);
  }

  /**
   * A specialized version of `baseAggregator` for arrays.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} setter The function to set `accumulator` values.
   * @param {Function} iteratee The iteratee to transform keys.
   * @param {Object} accumulator The initial aggregated object.
   * @returns {Function} Returns `accumulator`.
   */
  function arrayAggregator(array, setter, iteratee, accumulator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      var value = array[index];
      setter(accumulator, value, iteratee(value), array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.forEach` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEach(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (iteratee(array[index], index, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.forEachRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEachRight(array, iteratee) {
    var length = array == null ? 0 : array.length;

    while (length--) {
      if (iteratee(array[length], length, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.every` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if all elements pass the predicate check,
   *  else `false`.
   */
  function arrayEvery(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (!predicate(array[index], index, array)) {
        return false;
      }
    }
    return true;
  }

  /**
   * A specialized version of `_.filter` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {Array} Returns the new filtered array.
   */
  function arrayFilter(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (predicate(value, index, array)) {
        result[resIndex++] = value;
      }
    }
    return result;
  }

  /**
   * A specialized version of `_.includes` for arrays without support for
   * specifying an index to search from.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludes(array, value) {
    var length = array == null ? 0 : array.length;
    return !!length && baseIndexOf(array, value, 0) > -1;
  }

  /**
   * This function is like `arrayIncludes` except that it accepts a comparator.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludesWith(array, value, comparator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (comparator(value, array[index])) {
        return true;
      }
    }
    return false;
  }

  /**
   * A specialized version of `_.map` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the new mapped array.
   */
  function arrayMap(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length,
        result = Array(length);

    while (++index < length) {
      result[index] = iteratee(array[index], index, array);
    }
    return result;
  }

  /**
   * Appends the elements of `values` to `array`.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {Array} values The values to append.
   * @returns {Array} Returns `array`.
   */
  function arrayPush(array, values) {
    var index = -1,
        length = values.length,
        offset = array.length;

    while (++index < length) {
      array[offset + index] = values[index];
    }
    return array;
  }

  /**
   * A specialized version of `_.reduce` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the first element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduce(array, iteratee, accumulator, initAccum) {
    var index = -1,
        length = array == null ? 0 : array.length;

    if (initAccum && length) {
      accumulator = array[++index];
    }
    while (++index < length) {
      accumulator = iteratee(accumulator, array[index], index, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.reduceRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the last element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduceRight(array, iteratee, accumulator, initAccum) {
    var length = array == null ? 0 : array.length;
    if (initAccum && length) {
      accumulator = array[--length];
    }
    while (length--) {
      accumulator = iteratee(accumulator, array[length], length, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.some` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if any element passes the predicate check,
   *  else `false`.
   */
  function arraySome(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (predicate(array[index], index, array)) {
        return true;
      }
    }
    return false;
  }

  /**
   * Gets the size of an ASCII `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  var asciiSize = baseProperty('length');

  /**
   * Converts an ASCII `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function asciiToArray(string) {
    return string.split('');
  }

  /**
   * Splits an ASCII `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function asciiWords(string) {
    return string.match(reAsciiWord) || [];
  }

  /**
   * The base implementation of methods like `_.findKey` and `_.findLastKey`,
   * without support for iteratee shorthands, which iterates over `collection`
   * using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the found element or its key, else `undefined`.
   */
  function baseFindKey(collection, predicate, eachFunc) {
    var result;
    eachFunc(collection, function(value, key, collection) {
      if (predicate(value, key, collection)) {
        result = key;
        return false;
      }
    });
    return result;
  }

  /**
   * The base implementation of `_.findIndex` and `_.findLastIndex` without
   * support for iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {number} fromIndex The index to search from.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseFindIndex(array, predicate, fromIndex, fromRight) {
    var length = array.length,
        index = fromIndex + (fromRight ? 1 : -1);

    while ((fromRight ? index-- : ++index < length)) {
      if (predicate(array[index], index, array)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOf(array, value, fromIndex) {
    return value === value
      ? strictIndexOf(array, value, fromIndex)
      : baseFindIndex(array, baseIsNaN, fromIndex);
  }

  /**
   * This function is like `baseIndexOf` except that it accepts a comparator.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOfWith(array, value, fromIndex, comparator) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (comparator(array[index], value)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.isNaN` without support for number objects.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
   */
  function baseIsNaN(value) {
    return value !== value;
  }

  /**
   * The base implementation of `_.mean` and `_.meanBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the mean.
   */
  function baseMean(array, iteratee) {
    var length = array == null ? 0 : array.length;
    return length ? (baseSum(array, iteratee) / length) : NAN;
  }

  /**
   * The base implementation of `_.property` without support for deep paths.
   *
   * @private
   * @param {string} key The key of the property to get.
   * @returns {Function} Returns the new accessor function.
   */
  function baseProperty(key) {
    return function(object) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.propertyOf` without support for deep paths.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {Function} Returns the new accessor function.
   */
  function basePropertyOf(object) {
    return function(key) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.reduce` and `_.reduceRight`, without support
   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} accumulator The initial value.
   * @param {boolean} initAccum Specify using the first or last element of
   *  `collection` as the initial value.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the accumulated value.
   */
  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
    eachFunc(collection, function(value, index, collection) {
      accumulator = initAccum
        ? (initAccum = false, value)
        : iteratee(accumulator, value, index, collection);
    });
    return accumulator;
  }

  /**
   * The base implementation of `_.sortBy` which uses `comparer` to define the
   * sort order of `array` and replaces criteria objects with their corresponding
   * values.
   *
   * @private
   * @param {Array} array The array to sort.
   * @param {Function} comparer The function to define sort order.
   * @returns {Array} Returns `array`.
   */
  function baseSortBy(array, comparer) {
    var length = array.length;

    array.sort(comparer);
    while (length--) {
      array[length] = array[length].value;
    }
    return array;
  }

  /**
   * The base implementation of `_.sum` and `_.sumBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the sum.
   */
  function baseSum(array, iteratee) {
    var result,
        index = -1,
        length = array.length;

    while (++index < length) {
      var current = iteratee(array[index]);
      if (current !== undefined) {
        result = result === undefined ? current : (result + current);
      }
    }
    return result;
  }

  /**
   * The base implementation of `_.times` without support for iteratee shorthands
   * or max array length checks.
   *
   * @private
   * @param {number} n The number of times to invoke `iteratee`.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the array of results.
   */
  function baseTimes(n, iteratee) {
    var index = -1,
        result = Array(n);

    while (++index < n) {
      result[index] = iteratee(index);
    }
    return result;
  }

  /**
   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
   * of key-value pairs for `object` corresponding to the property names of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the key-value pairs.
   */
  function baseToPairs(object, props) {
    return arrayMap(props, function(key) {
      return [key, object[key]];
    });
  }

  /**
   * The base implementation of `_.unary` without support for storing metadata.
   *
   * @private
   * @param {Function} func The function to cap arguments for.
   * @returns {Function} Returns the new capped function.
   */
  function baseUnary(func) {
    return function(value) {
      return func(value);
    };
  }

  /**
   * The base implementation of `_.values` and `_.valuesIn` which creates an
   * array of `object` property values corresponding to the property names
   * of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the array of property values.
   */
  function baseValues(object, props) {
    return arrayMap(props, function(key) {
      return object[key];
    });
  }

  /**
   * Checks if a `cache` value for `key` exists.
   *
   * @private
   * @param {Object} cache The cache to query.
   * @param {string} key The key of the entry to check.
   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
   */
  function cacheHas(cache, key) {
    return cache.has(key);
  }

  /**
   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the first unmatched string symbol.
   */
  function charsStartIndex(strSymbols, chrSymbols) {
    var index = -1,
        length = strSymbols.length;

    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the last unmatched string symbol.
   */
  function charsEndIndex(strSymbols, chrSymbols) {
    var index = strSymbols.length;

    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Gets the number of `placeholder` occurrences in `array`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} placeholder The placeholder to search for.
   * @returns {number} Returns the placeholder count.
   */
  function countHolders(array, placeholder) {
    var length = array.length,
        result = 0;

    while (length--) {
      if (array[length] === placeholder) {
        ++result;
      }
    }
    return result;
  }

  /**
   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
   * letters to basic Latin letters.
   *
   * @private
   * @param {string} letter The matched letter to deburr.
   * @returns {string} Returns the deburred letter.
   */
  var deburrLetter = basePropertyOf(deburredLetters);

  /**
   * Used by `_.escape` to convert characters to HTML entities.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  var escapeHtmlChar = basePropertyOf(htmlEscapes);

  /**
   * Used by `_.template` to escape characters for inclusion in compiled string literals.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeStringChar(chr) {
    return '\\' + stringEscapes[chr];
  }

  /**
   * Gets the value at `key` of `object`.
   *
   * @private
   * @param {Object} [object] The object to query.
   * @param {string} key The key of the property to get.
   * @returns {*} Returns the property value.
   */
  function getValue(object, key) {
    return object == null ? undefined : object[key];
  }

  /**
   * Checks if `string` contains Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a symbol is found, else `false`.
   */
  function hasUnicode(string) {
    return reHasUnicode.test(string);
  }

  /**
   * Checks if `string` contains a word composed of Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a word is found, else `false`.
   */
  function hasUnicodeWord(string) {
    return reHasUnicodeWord.test(string);
  }

  /**
   * Converts `iterator` to an array.
   *
   * @private
   * @param {Object} iterator The iterator to convert.
   * @returns {Array} Returns the converted array.
   */
  function iteratorToArray(iterator) {
    var data,
        result = [];

    while (!(data = iterator.next()).done) {
      result.push(data.value);
    }
    return result;
  }

  /**
   * Converts `map` to its key-value pairs.
   *
   * @private
   * @param {Object} map The map to convert.
   * @returns {Array} Returns the key-value pairs.
   */
  function mapToArray(map) {
    var index = -1,
        result = Array(map.size);

    map.forEach(function(value, key) {
      result[++index] = [key, value];
    });
    return result;
  }

  /**
   * Creates a unary function that invokes `func` with its argument transformed.
   *
   * @private
   * @param {Function} func The function to wrap.
   * @param {Function} transform The argument transform.
   * @returns {Function} Returns the new function.
   */
  function overArg(func, transform) {
    return function(arg) {
      return func(transform(arg));
    };
  }

  /**
   * Replaces all `placeholder` elements in `array` with an internal placeholder
   * and returns an array of their indexes.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {*} placeholder The placeholder to replace.
   * @returns {Array} Returns the new array of placeholder indexes.
   */
  function replaceHolders(array, placeholder) {
    var index = -1,
        length = array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (value === placeholder || value === PLACEHOLDER) {
        array[index] = PLACEHOLDER;
        result[resIndex++] = index;
      }
    }
    return result;
  }

  /**
   * Converts `set` to an array of its values.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the values.
   */
  function setToArray(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = value;
    });
    return result;
  }

  /**
   * Converts `set` to its value-value pairs.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the value-value pairs.
   */
  function setToPairs(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = [value, value];
    });
    return result;
  }

  /**
   * A specialized version of `_.indexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictIndexOf(array, value, fromIndex) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }

  /**
   * A specialized version of `_.lastIndexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictLastIndexOf(array, value, fromIndex) {
    var index = fromIndex + 1;
    while (index--) {
      if (array[index] === value) {
        return index;
      }
    }
    return index;
  }

  /**
   * Gets the number of symbols in `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the string size.
   */
  function stringSize(string) {
    return hasUnicode(string)
      ? unicodeSize(string)
      : asciiSize(string);
  }

  /**
   * Converts `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function stringToArray(string) {
    return hasUnicode(string)
      ? unicodeToArray(string)
      : asciiToArray(string);
  }

  /**
   * Used by `_.unescape` to convert HTML entities to characters.
   *
   * @private
   * @param {string} chr The matched character to unescape.
   * @returns {string} Returns the unescaped character.
   */
  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

  /**
   * Gets the size of a Unicode `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  function unicodeSize(string) {
    var result = reUnicode.lastIndex = 0;
    while (reUnicode.test(string)) {
      ++result;
    }
    return result;
  }

  /**
   * Converts a Unicode `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function unicodeToArray(string) {
    return string.match(reUnicode) || [];
  }

  /**
   * Splits a Unicode `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function unicodeWords(string) {
    return string.match(reUnicodeWord) || [];
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Create a new pristine `lodash` function using the `context` object.
   *
   * @static
   * @memberOf _
   * @since 1.1.0
   * @category Util
   * @param {Object} [context=root] The context object.
   * @returns {Function} Returns a new `lodash` function.
   * @example
   *
   * _.mixin({ 'foo': _.constant('foo') });
   *
   * var lodash = _.runInContext();
   * lodash.mixin({ 'bar': lodash.constant('bar') });
   *
   * _.isFunction(_.foo);
   * // => true
   * _.isFunction(_.bar);
   * // => false
   *
   * lodash.isFunction(lodash.foo);
   * // => false
   * lodash.isFunction(lodash.bar);
   * // => true
   *
   * // Create a suped-up `defer` in Node.js.
   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
   */
  var runInContext = (function runInContext(context) {
    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));

    /** Built-in constructor references. */
    var Array = context.Array,
        Date = context.Date,
        Error = context.Error,
        Function = context.Function,
        Math = context.Math,
        Object = context.Object,
        RegExp = context.RegExp,
        String = context.String,
        TypeError = context.TypeError;

    /** Used for built-in method references. */
    var arrayProto = Array.prototype,
        funcProto = Function.prototype,
        objectProto = Object.prototype;

    /** Used to detect overreaching core-js shims. */
    var coreJsData = context['__core-js_shared__'];

    /** Used to resolve the decompiled source of functions. */
    var funcToString = funcProto.toString;

    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto.hasOwnProperty;

    /** Used to generate unique IDs. */
    var idCounter = 0;

    /** Used to detect methods masquerading as native. */
    var maskSrcKey = (function() {
      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
      return uid ? ('Symbol(src)_1.' + uid) : '';
    }());

    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
     * of values.
     */
    var nativeObjectToString = objectProto.toString;

    /** Used to infer the `Object` constructor. */
    var objectCtorString = funcToString.call(Object);

    /** Used to restore the original `_` reference in `_.noConflict`. */
    var oldDash = root._;

    /** Used to detect if a method is native. */
    var reIsNative = RegExp('^' +
      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
      .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
    );

    /** Built-in value references. */
    var Buffer = moduleExports ? context.Buffer : undefined,
        Symbol = context.Symbol,
        Uint8Array = context.Uint8Array,
        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
        getPrototype = overArg(Object.getPrototypeOf, Object),
        objectCreate = Object.create,
        propertyIsEnumerable = objectProto.propertyIsEnumerable,
        splice = arrayProto.splice,
        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
        symIterator = Symbol ? Symbol.iterator : undefined,
        symToStringTag = Symbol ? Symbol.toStringTag : undefined;

    var defineProperty = (function() {
      try {
        var func = getNative(Object, 'defineProperty');
        func({}, '', {});
        return func;
      } catch (e) {}
    }());

    /** Mocked built-ins. */
    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
        ctxNow = Date && Date.now !== root.Date.now && Date.now,
        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;

    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeCeil = Math.ceil,
        nativeFloor = Math.floor,
        nativeGetSymbols = Object.getOwnPropertySymbols,
        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
        nativeIsFinite = context.isFinite,
        nativeJoin = arrayProto.join,
        nativeKeys = overArg(Object.keys, Object),
        nativeMax = Math.max,
        nativeMin = Math.min,
        nativeNow = Date.now,
        nativeParseInt = context.parseInt,
        nativeRandom = Math.random,
        nativeReverse = arrayProto.reverse;

    /* Built-in method references that are verified to be native. */
    var DataView = getNative(context, 'DataView'),
        Map = getNative(context, 'Map'),
        Promise = getNative(context, 'Promise'),
        Set = getNative(context, 'Set'),
        WeakMap = getNative(context, 'WeakMap'),
        nativeCreate = getNative(Object, 'create');

    /** Used to store function metadata. */
    var metaMap = WeakMap && new WeakMap;

    /** Used to lookup unminified function names. */
    var realNames = {};

    /** Used to detect maps, sets, and weakmaps. */
    var dataViewCtorString = toSource(DataView),
        mapCtorString = toSource(Map),
        promiseCtorString = toSource(Promise),
        setCtorString = toSource(Set),
        weakMapCtorString = toSource(WeakMap);

    /** Used to convert symbols to primitives and strings. */
    var symbolProto = Symbol ? Symbol.prototype : undefined,
        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
        symbolToString = symbolProto ? symbolProto.toString : undefined;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object which wraps `value` to enable implicit method
     * chain sequences. Methods that operate on and return arrays, collections,
     * and functions can be chained together. Methods that retrieve a single value
     * or may return a primitive value will automatically end the chain sequence
     * and return the unwrapped value. Otherwise, the value must be unwrapped
     * with `_#value`.
     *
     * Explicit chain sequences, which must be unwrapped with `_#value`, may be
     * enabled using `_.chain`.
     *
     * The execution of chained methods is lazy, that is, it's deferred until
     * `_#value` is implicitly or explicitly called.
     *
     * Lazy evaluation allows several methods to support shortcut fusion.
     * Shortcut fusion is an optimization to merge iteratee calls; this avoids
     * the creation of intermediate arrays and can greatly reduce the number of
     * iteratee executions. Sections of a chain sequence qualify for shortcut
     * fusion if the section is applied to an array and iteratees accept only
     * one argument. The heuristic for whether a section qualifies for shortcut
     * fusion is subject to change.
     *
     * Chaining is supported in custom builds as long as the `_#value` method is
     * directly or indirectly included in the build.
     *
     * In addition to lodash methods, wrappers have `Array` and `String` methods.
     *
     * The wrapper `Array` methods are:
     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
     *
     * The wrapper `String` methods are:
     * `replace` and `split`
     *
     * The wrapper methods that support shortcut fusion are:
     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
     *
     * The chainable wrapper methods are:
     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
     * `zipObject`, `zipObjectDeep`, and `zipWith`
     *
     * The wrapper methods that are **not** chainable by default are:
     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
     * `upperFirst`, `value`, and `words`
     *
     * @name _
     * @constructor
     * @category Seq
     * @param {*} value The value to wrap in a `lodash` instance.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2, 3]);
     *
     * // Returns an unwrapped value.
     * wrapped.reduce(_.add);
     * // => 6
     *
     * // Returns a wrapped value.
     * var squares = wrapped.map(square);
     *
     * _.isArray(squares);
     * // => false
     *
     * _.isArray(squares.value());
     * // => true
     */
    function lodash(value) {
      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
        if (value instanceof LodashWrapper) {
          return value;
        }
        if (hasOwnProperty.call(value, '__wrapped__')) {
          return wrapperClone(value);
        }
      }
      return new LodashWrapper(value);
    }

    /**
     * The base implementation of `_.create` without support for assigning
     * properties to the created object.
     *
     * @private
     * @param {Object} proto The object to inherit from.
     * @returns {Object} Returns the new object.
     */
    var baseCreate = (function() {
      function object() {}
      return function(proto) {
        if (!isObject(proto)) {
          return {};
        }
        if (objectCreate) {
          return objectCreate(proto);
        }
        object.prototype = proto;
        var result = new object;
        object.prototype = undefined;
        return result;
      };
    }());

    /**
     * The function whose prototype chain sequence wrappers inherit from.
     *
     * @private
     */
    function baseLodash() {
      // No operation performed.
    }

    /**
     * The base constructor for creating `lodash` wrapper objects.
     *
     * @private
     * @param {*} value The value to wrap.
     * @param {boolean} [chainAll] Enable explicit method chain sequences.
     */
    function LodashWrapper(value, chainAll) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__chain__ = !!chainAll;
      this.__index__ = 0;
      this.__values__ = undefined;
    }

    /**
     * By default, the template delimiters used by lodash are like those in
     * embedded Ruby (ERB) as well as ES2015 template strings. Change the
     * following template settings to use alternative delimiters.
     *
     * @static
     * @memberOf _
     * @type {Object}
     */
    lodash.templateSettings = {

      /**
       * Used to detect `data` property values to be HTML-escaped.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'escape': reEscape,

      /**
       * Used to detect code to be evaluated.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'evaluate': reEvaluate,

      /**
       * Used to detect `data` property values to inject.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'interpolate': reInterpolate,

      /**
       * Used to reference the data object in the template text.
       *
       * @memberOf _.templateSettings
       * @type {string}
       */
      'variable': '',

      /**
       * Used to import variables into the compiled template.
       *
       * @memberOf _.templateSettings
       * @type {Object}
       */
      'imports': {

        /**
         * A reference to the `lodash` function.
         *
         * @memberOf _.templateSettings.imports
         * @type {Function}
         */
        '_': lodash
      }
    };

    // Ensure wrappers are instances of `baseLodash`.
    lodash.prototype = baseLodash.prototype;
    lodash.prototype.constructor = lodash;

    LodashWrapper.prototype = baseCreate(baseLodash.prototype);
    LodashWrapper.prototype.constructor = LodashWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
     *
     * @private
     * @constructor
     * @param {*} value The value to wrap.
     */
    function LazyWrapper(value) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__dir__ = 1;
      this.__filtered__ = false;
      this.__iteratees__ = [];
      this.__takeCount__ = MAX_ARRAY_LENGTH;
      this.__views__ = [];
    }

    /**
     * Creates a clone of the lazy wrapper object.
     *
     * @private
     * @name clone
     * @memberOf LazyWrapper
     * @returns {Object} Returns the cloned `LazyWrapper` object.
     */
    function lazyClone() {
      var result = new LazyWrapper(this.__wrapped__);
      result.__actions__ = copyArray(this.__actions__);
      result.__dir__ = this.__dir__;
      result.__filtered__ = this.__filtered__;
      result.__iteratees__ = copyArray(this.__iteratees__);
      result.__takeCount__ = this.__takeCount__;
      result.__views__ = copyArray(this.__views__);
      return result;
    }

    /**
     * Reverses the direction of lazy iteration.
     *
     * @private
     * @name reverse
     * @memberOf LazyWrapper
     * @returns {Object} Returns the new reversed `LazyWrapper` object.
     */
    function lazyReverse() {
      if (this.__filtered__) {
        var result = new LazyWrapper(this);
        result.__dir__ = -1;
        result.__filtered__ = true;
      } else {
        result = this.clone();
        result.__dir__ *= -1;
      }
      return result;
    }

    /**
     * Extracts the unwrapped value from its lazy wrapper.
     *
     * @private
     * @name value
     * @memberOf LazyWrapper
     * @returns {*} Returns the unwrapped value.
     */
    function lazyValue() {
      var array = this.__wrapped__.value(),
          dir = this.__dir__,
          isArr = isArray(array),
          isRight = dir < 0,
          arrLength = isArr ? array.length : 0,
          view = getView(0, arrLength, this.__views__),
          start = view.start,
          end = view.end,
          length = end - start,
          index = isRight ? end : (start - 1),
          iteratees = this.__iteratees__,
          iterLength = iteratees.length,
          resIndex = 0,
          takeCount = nativeMin(length, this.__takeCount__);

      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
        return baseWrapperValue(array, this.__actions__);
      }
      var result = [];

      outer:
      while (length-- && resIndex < takeCount) {
        index += dir;

        var iterIndex = -1,
            value = array[index];

        while (++iterIndex < iterLength) {
          var data = iteratees[iterIndex],
              iteratee = data.iteratee,
              type = data.type,
              computed = iteratee(value);

          if (type == LAZY_MAP_FLAG) {
            value = computed;
          } else if (!computed) {
            if (type == LAZY_FILTER_FLAG) {
              continue outer;
            } else {
              break outer;
            }
          }
        }
        result[resIndex++] = value;
      }
      return result;
    }

    // Ensure `LazyWrapper` is an instance of `baseLodash`.
    LazyWrapper.prototype = baseCreate(baseLodash.prototype);
    LazyWrapper.prototype.constructor = LazyWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a hash object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Hash(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the hash.
     *
     * @private
     * @name clear
     * @memberOf Hash
     */
    function hashClear() {
      this.__data__ = nativeCreate ? nativeCreate(null) : {};
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the hash.
     *
     * @private
     * @name delete
     * @memberOf Hash
     * @param {Object} hash The hash to modify.
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function hashDelete(key) {
      var result = this.has(key) && delete this.__data__[key];
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the hash value for `key`.
     *
     * @private
     * @name get
     * @memberOf Hash
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function hashGet(key) {
      var data = this.__data__;
      if (nativeCreate) {
        var result = data[key];
        return result === HASH_UNDEFINED ? undefined : result;
      }
      return hasOwnProperty.call(data, key) ? data[key] : undefined;
    }

    /**
     * Checks if a hash value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Hash
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function hashHas(key) {
      var data = this.__data__;
      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
    }

    /**
     * Sets the hash `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Hash
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the hash instance.
     */
    function hashSet(key, value) {
      var data = this.__data__;
      this.size += this.has(key) ? 0 : 1;
      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
      return this;
    }

    // Add methods to `Hash`.
    Hash.prototype.clear = hashClear;
    Hash.prototype['delete'] = hashDelete;
    Hash.prototype.get = hashGet;
    Hash.prototype.has = hashHas;
    Hash.prototype.set = hashSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an list cache object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function ListCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the list cache.
     *
     * @private
     * @name clear
     * @memberOf ListCache
     */
    function listCacheClear() {
      this.__data__ = [];
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the list cache.
     *
     * @private
     * @name delete
     * @memberOf ListCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function listCacheDelete(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        return false;
      }
      var lastIndex = data.length - 1;
      if (index == lastIndex) {
        data.pop();
      } else {
        splice.call(data, index, 1);
      }
      --this.size;
      return true;
    }

    /**
     * Gets the list cache value for `key`.
     *
     * @private
     * @name get
     * @memberOf ListCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function listCacheGet(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      return index < 0 ? undefined : data[index][1];
    }

    /**
     * Checks if a list cache value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf ListCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function listCacheHas(key) {
      return assocIndexOf(this.__data__, key) > -1;
    }

    /**
     * Sets the list cache `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf ListCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the list cache instance.
     */
    function listCacheSet(key, value) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        ++this.size;
        data.push([key, value]);
      } else {
        data[index][1] = value;
      }
      return this;
    }

    // Add methods to `ListCache`.
    ListCache.prototype.clear = listCacheClear;
    ListCache.prototype['delete'] = listCacheDelete;
    ListCache.prototype.get = listCacheGet;
    ListCache.prototype.has = listCacheHas;
    ListCache.prototype.set = listCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a map cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function MapCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the map.
     *
     * @private
     * @name clear
     * @memberOf MapCache
     */
    function mapCacheClear() {
      this.size = 0;
      this.__data__ = {
        'hash': new Hash,
        'map': new (Map || ListCache),
        'string': new Hash
      };
    }

    /**
     * Removes `key` and its value from the map.
     *
     * @private
     * @name delete
     * @memberOf MapCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function mapCacheDelete(key) {
      var result = getMapData(this, key)['delete'](key);
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the map value for `key`.
     *
     * @private
     * @name get
     * @memberOf MapCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function mapCacheGet(key) {
      return getMapData(this, key).get(key);
    }

    /**
     * Checks if a map value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf MapCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function mapCacheHas(key) {
      return getMapData(this, key).has(key);
    }

    /**
     * Sets the map `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf MapCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the map cache instance.
     */
    function mapCacheSet(key, value) {
      var data = getMapData(this, key),
          size = data.size;

      data.set(key, value);
      this.size += data.size == size ? 0 : 1;
      return this;
    }

    // Add methods to `MapCache`.
    MapCache.prototype.clear = mapCacheClear;
    MapCache.prototype['delete'] = mapCacheDelete;
    MapCache.prototype.get = mapCacheGet;
    MapCache.prototype.has = mapCacheHas;
    MapCache.prototype.set = mapCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     *
     * Creates an array cache object to store unique values.
     *
     * @private
     * @constructor
     * @param {Array} [values] The values to cache.
     */
    function SetCache(values) {
      var index = -1,
          length = values == null ? 0 : values.length;

      this.__data__ = new MapCache;
      while (++index < length) {
        this.add(values[index]);
      }
    }

    /**
     * Adds `value` to the array cache.
     *
     * @private
     * @name add
     * @memberOf SetCache
     * @alias push
     * @param {*} value The value to cache.
     * @returns {Object} Returns the cache instance.
     */
    function setCacheAdd(value) {
      this.__data__.set(value, HASH_UNDEFINED);
      return this;
    }

    /**
     * Checks if `value` is in the array cache.
     *
     * @private
     * @name has
     * @memberOf SetCache
     * @param {*} value The value to search for.
     * @returns {number} Returns `true` if `value` is found, else `false`.
     */
    function setCacheHas(value) {
      return this.__data__.has(value);
    }

    // Add methods to `SetCache`.
    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
    SetCache.prototype.has = setCacheHas;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a stack cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Stack(entries) {
      var data = this.__data__ = new ListCache(entries);
      this.size = data.size;
    }

    /**
     * Removes all key-value entries from the stack.
     *
     * @private
     * @name clear
     * @memberOf Stack
     */
    function stackClear() {
      this.__data__ = new ListCache;
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the stack.
     *
     * @private
     * @name delete
     * @memberOf Stack
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function stackDelete(key) {
      var data = this.__data__,
          result = data['delete'](key);

      this.size = data.size;
      return result;
    }

    /**
     * Gets the stack value for `key`.
     *
     * @private
     * @name get
     * @memberOf Stack
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function stackGet(key) {
      return this.__data__.get(key);
    }

    /**
     * Checks if a stack value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Stack
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function stackHas(key) {
      return this.__data__.has(key);
    }

    /**
     * Sets the stack `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Stack
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the stack cache instance.
     */
    function stackSet(key, value) {
      var data = this.__data__;
      if (data instanceof ListCache) {
        var pairs = data.__data__;
        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
          pairs.push([key, value]);
          this.size = ++data.size;
          return this;
        }
        data = this.__data__ = new MapCache(pairs);
      }
      data.set(key, value);
      this.size = data.size;
      return this;
    }

    // Add methods to `Stack`.
    Stack.prototype.clear = stackClear;
    Stack.prototype['delete'] = stackDelete;
    Stack.prototype.get = stackGet;
    Stack.prototype.has = stackHas;
    Stack.prototype.set = stackSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of the enumerable property names of the array-like `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @param {boolean} inherited Specify returning inherited property names.
     * @returns {Array} Returns the array of property names.
     */
    function arrayLikeKeys(value, inherited) {
      var isArr = isArray(value),
          isArg = !isArr && isArguments(value),
          isBuff = !isArr && !isArg && isBuffer(value),
          isType = !isArr && !isArg && !isBuff && isTypedArray(value),
          skipIndexes = isArr || isArg || isBuff || isType,
          result = skipIndexes ? baseTimes(value.length, String) : [],
          length = result.length;

      for (var key in value) {
        if ((inherited || hasOwnProperty.call(value, key)) &&
            !(skipIndexes && (
               // Safari 9 has enumerable `arguments.length` in strict mode.
               key == 'length' ||
               // Node.js 0.10 has enumerable non-index properties on buffers.
               (isBuff && (key == 'offset' || key == 'parent')) ||
               // PhantomJS 2 has enumerable non-index properties on typed arrays.
               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
               // Skip index properties.
               isIndex(key, length)
            ))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.sample` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @returns {*} Returns the random element.
     */
    function arraySample(array) {
      var length = array.length;
      return length ? array[baseRandom(0, length - 1)] : undefined;
    }

    /**
     * A specialized version of `_.sampleSize` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function arraySampleSize(array, n) {
      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
    }

    /**
     * A specialized version of `_.shuffle` for arrays.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function arrayShuffle(array) {
      return shuffleSelf(copyArray(array));
    }

    /**
     * This function is like `assignValue` except that it doesn't assign
     * `undefined` values.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignMergeValue(object, key, value) {
      if ((value !== undefined && !eq(object[key], value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Assigns `value` to `key` of `object` if the existing value is not equivalent
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignValue(object, key, value) {
      var objValue = object[key];
      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Gets the index at which the `key` is found in `array` of key-value pairs.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} key The key to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function assocIndexOf(array, key) {
      var length = array.length;
      while (length--) {
        if (eq(array[length][0], key)) {
          return length;
        }
      }
      return -1;
    }

    /**
     * Aggregates elements of `collection` on `accumulator` with keys transformed
     * by `iteratee` and values set by `setter`.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform keys.
     * @param {Object} accumulator The initial aggregated object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseAggregator(collection, setter, iteratee, accumulator) {
      baseEach(collection, function(value, key, collection) {
        setter(accumulator, value, iteratee(value), collection);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.assign` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssign(object, source) {
      return object && copyObject(source, keys(source), object);
    }

    /**
     * The base implementation of `_.assignIn` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssignIn(object, source) {
      return object && copyObject(source, keysIn(source), object);
    }

    /**
     * The base implementation of `assignValue` and `assignMergeValue` without
     * value checks.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function baseAssignValue(object, key, value) {
      if (key == '__proto__' && defineProperty) {
        defineProperty(object, key, {
          'configurable': true,
          'enumerable': true,
          'value': value,
          'writable': true
        });
      } else {
        object[key] = value;
      }
    }

    /**
     * The base implementation of `_.at` without support for individual paths.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {string[]} paths The property paths to pick.
     * @returns {Array} Returns the picked elements.
     */
    function baseAt(object, paths) {
      var index = -1,
          length = paths.length,
          result = Array(length),
          skip = object == null;

      while (++index < length) {
        result[index] = skip ? undefined : get(object, paths[index]);
      }
      return result;
    }

    /**
     * The base implementation of `_.clamp` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     */
    function baseClamp(number, lower, upper) {
      if (number === number) {
        if (upper !== undefined) {
          number = number <= upper ? number : upper;
        }
        if (lower !== undefined) {
          number = number >= lower ? number : lower;
        }
      }
      return number;
    }

    /**
     * The base implementation of `_.clone` and `_.cloneDeep` which tracks
     * traversed objects.
     *
     * @private
     * @param {*} value The value to clone.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Deep clone
     *  2 - Flatten inherited properties
     *  4 - Clone symbols
     * @param {Function} [customizer] The function to customize cloning.
     * @param {string} [key] The key of `value`.
     * @param {Object} [object] The parent object of `value`.
     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
     * @returns {*} Returns the cloned value.
     */
    function baseClone(value, bitmask, customizer, key, object, stack) {
      var result,
          isDeep = bitmask & CLONE_DEEP_FLAG,
          isFlat = bitmask & CLONE_FLAT_FLAG,
          isFull = bitmask & CLONE_SYMBOLS_FLAG;

      if (customizer) {
        result = object ? customizer(value, key, object, stack) : customizer(value);
      }
      if (result !== undefined) {
        return result;
      }
      if (!isObject(value)) {
        return value;
      }
      var isArr = isArray(value);
      if (isArr) {
        result = initCloneArray(value);
        if (!isDeep) {
          return copyArray(value, result);
        }
      } else {
        var tag = getTag(value),
            isFunc = tag == funcTag || tag == genTag;

        if (isBuffer(value)) {
          return cloneBuffer(value, isDeep);
        }
        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
          result = (isFlat || isFunc) ? {} : initCloneObject(value);
          if (!isDeep) {
            return isFlat
              ? copySymbolsIn(value, baseAssignIn(result, value))
              : copySymbols(value, baseAssign(result, value));
          }
        } else {
          if (!cloneableTags[tag]) {
            return object ? value : {};
          }
          result = initCloneByTag(value, tag, isDeep);
        }
      }
      // Check for circular references and return its corresponding clone.
      stack || (stack = new Stack);
      var stacked = stack.get(value);
      if (stacked) {
        return stacked;
      }
      stack.set(value, result);

      if (isSet(value)) {
        value.forEach(function(subValue) {
          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
        });

        return result;
      }

      if (isMap(value)) {
        value.forEach(function(subValue, key) {
          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
        });

        return result;
      }

      var keysFunc = isFull
        ? (isFlat ? getAllKeysIn : getAllKeys)
        : (isFlat ? keysIn : keys);

      var props = isArr ? undefined : keysFunc(value);
      arrayEach(props || value, function(subValue, key) {
        if (props) {
          key = subValue;
          subValue = value[key];
        }
        // Recursively populate clone (susceptible to call stack limits).
        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
      });
      return result;
    }

    /**
     * The base implementation of `_.conforms` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     */
    function baseConforms(source) {
      var props = keys(source);
      return function(object) {
        return baseConformsTo(object, source, props);
      };
    }

    /**
     * The base implementation of `_.conformsTo` which accepts `props` to check.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     */
    function baseConformsTo(object, source, props) {
      var length = props.length;
      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (length--) {
        var key = props[length],
            predicate = source[key],
            value = object[key];

        if ((value === undefined && !(key in object)) || !predicate(value)) {
          return false;
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.delay` and `_.defer` which accepts `args`
     * to provide to `func`.
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {Array} args The arguments to provide to `func`.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    function baseDelay(func, wait, args) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return setTimeout(function() { func.apply(undefined, args); }, wait);
    }

    /**
     * The base implementation of methods like `_.difference` without support
     * for excluding multiple arrays or iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Array} values The values to exclude.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     */
    function baseDifference(array, values, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          isCommon = true,
          length = array.length,
          result = [],
          valuesLength = values.length;

      if (!length) {
        return result;
      }
      if (iteratee) {
        values = arrayMap(values, baseUnary(iteratee));
      }
      if (comparator) {
        includes = arrayIncludesWith;
        isCommon = false;
      }
      else if (values.length >= LARGE_ARRAY_SIZE) {
        includes = cacheHas;
        isCommon = false;
        values = new SetCache(values);
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee == null ? value : iteratee(value);

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var valuesIndex = valuesLength;
          while (valuesIndex--) {
            if (values[valuesIndex] === computed) {
              continue outer;
            }
          }
          result.push(value);
        }
        else if (!includes(values, computed, comparator)) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.forEach` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEach = createBaseEach(baseForOwn);

    /**
     * The base implementation of `_.forEachRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEachRight = createBaseEach(baseForOwnRight, true);

    /**
     * The base implementation of `_.every` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`
     */
    function baseEvery(collection, predicate) {
      var result = true;
      baseEach(collection, function(value, index, collection) {
        result = !!predicate(value, index, collection);
        return result;
      });
      return result;
    }

    /**
     * The base implementation of methods like `_.max` and `_.min` which accepts a
     * `comparator` to determine the extremum value.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The iteratee invoked per iteration.
     * @param {Function} comparator The comparator used to compare values.
     * @returns {*} Returns the extremum value.
     */
    function baseExtremum(array, iteratee, comparator) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        var value = array[index],
            current = iteratee(value);

        if (current != null && (computed === undefined
              ? (current === current && !isSymbol(current))
              : comparator(current, computed)
            )) {
          var computed = current,
              result = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.fill` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     */
    function baseFill(array, value, start, end) {
      var length = array.length;

      start = toInteger(start);
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = (end === undefined || end > length) ? length : toInteger(end);
      if (end < 0) {
        end += length;
      }
      end = start > end ? 0 : toLength(end);
      while (start < end) {
        array[start++] = value;
      }
      return array;
    }

    /**
     * The base implementation of `_.filter` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function baseFilter(collection, predicate) {
      var result = [];
      baseEach(collection, function(value, index, collection) {
        if (predicate(value, index, collection)) {
          result.push(value);
        }
      });
      return result;
    }

    /**
     * The base implementation of `_.flatten` with support for restricting flattening.
     *
     * @private
     * @param {Array} array The array to flatten.
     * @param {number} depth The maximum recursion depth.
     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
     * @param {Array} [result=[]] The initial result value.
     * @returns {Array} Returns the new flattened array.
     */
    function baseFlatten(array, depth, predicate, isStrict, result) {
      var index = -1,
          length = array.length;

      predicate || (predicate = isFlattenable);
      result || (result = []);

      while (++index < length) {
        var value = array[index];
        if (depth > 0 && predicate(value)) {
          if (depth > 1) {
            // Recursively flatten arrays (susceptible to call stack limits).
            baseFlatten(value, depth - 1, predicate, isStrict, result);
          } else {
            arrayPush(result, value);
          }
        } else if (!isStrict) {
          result[result.length] = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `baseForOwn` which iterates over `object`
     * properties returned by `keysFunc` and invokes `iteratee` for each property.
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseFor = createBaseFor();

    /**
     * This function is like `baseFor` except that it iterates over properties
     * in the opposite order.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseForRight = createBaseFor(true);

    /**
     * The base implementation of `_.forOwn` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwn(object, iteratee) {
      return object && baseFor(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwnRight(object, iteratee) {
      return object && baseForRight(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.functions` which creates an array of
     * `object` function property names filtered from `props`.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Array} props The property names to filter.
     * @returns {Array} Returns the function names.
     */
    function baseFunctions(object, props) {
      return arrayFilter(props, function(key) {
        return isFunction(object[key]);
      });
    }

    /**
     * The base implementation of `_.get` without support for default values.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @returns {*} Returns the resolved value.
     */
    function baseGet(object, path) {
      path = castPath(path, object);

      var index = 0,
          length = path.length;

      while (object != null && index < length) {
        object = object[toKey(path[index++])];
      }
      return (index && index == length) ? object : undefined;
    }

    /**
     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
     * `keysFunc` and `symbolsFunc` to get the enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @param {Function} symbolsFunc The function to get the symbols of `object`.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function baseGetAllKeys(object, keysFunc, symbolsFunc) {
      var result = keysFunc(object);
      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
    }

    /**
     * The base implementation of `getTag` without fallbacks for buggy environments.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    function baseGetTag(value) {
      if (value == null) {
        return value === undefined ? undefinedTag : nullTag;
      }
      return (symToStringTag && symToStringTag in Object(value))
        ? getRawTag(value)
        : objectToString(value);
    }

    /**
     * The base implementation of `_.gt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     */
    function baseGt(value, other) {
      return value > other;
    }

    /**
     * The base implementation of `_.has` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHas(object, key) {
      return object != null && hasOwnProperty.call(object, key);
    }

    /**
     * The base implementation of `_.hasIn` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHasIn(object, key) {
      return object != null && key in Object(object);
    }

    /**
     * The base implementation of `_.inRange` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to check.
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     */
    function baseInRange(number, start, end) {
      return number >= nativeMin(start, end) && number < nativeMax(start, end);
    }

    /**
     * The base implementation of methods like `_.intersection`, without support
     * for iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of shared values.
     */
    function baseIntersection(arrays, iteratee, comparator) {
      var includes = comparator ? arrayIncludesWith : arrayIncludes,
          length = arrays[0].length,
          othLength = arrays.length,
          othIndex = othLength,
          caches = Array(othLength),
          maxLength = Infinity,
          result = [];

      while (othIndex--) {
        var array = arrays[othIndex];
        if (othIndex && iteratee) {
          array = arrayMap(array, baseUnary(iteratee));
        }
        maxLength = nativeMin(array.length, maxLength);
        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
          ? new SetCache(othIndex && array)
          : undefined;
      }
      array = arrays[0];

      var index = -1,
          seen = caches[0];

      outer:
      while (++index < length && result.length < maxLength) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (!(seen
              ? cacheHas(seen, computed)
              : includes(result, computed, comparator)
            )) {
          othIndex = othLength;
          while (--othIndex) {
            var cache = caches[othIndex];
            if (!(cache
                  ? cacheHas(cache, computed)
                  : includes(arrays[othIndex], computed, comparator))
                ) {
              continue outer;
            }
          }
          if (seen) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.invert` and `_.invertBy` which inverts
     * `object` with values transformed by `iteratee` and set by `setter`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform values.
     * @param {Object} accumulator The initial inverted object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseInverter(object, setter, iteratee, accumulator) {
      baseForOwn(object, function(value, key, object) {
        setter(accumulator, iteratee(value), key, object);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.invoke` without support for individual
     * method arguments.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {Array} args The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     */
    function baseInvoke(object, path, args) {
      path = castPath(path, object);
      object = parent(object, path);
      var func = object == null ? object : object[toKey(last(path))];
      return func == null ? undefined : apply(func, object, args);
    }

    /**
     * The base implementation of `_.isArguments`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     */
    function baseIsArguments(value) {
      return isObjectLike(value) && baseGetTag(value) == argsTag;
    }

    /**
     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     */
    function baseIsArrayBuffer(value) {
      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
    }

    /**
     * The base implementation of `_.isDate` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     */
    function baseIsDate(value) {
      return isObjectLike(value) && baseGetTag(value) == dateTag;
    }

    /**
     * The base implementation of `_.isEqual` which supports partial comparisons
     * and tracks traversed objects.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Unordered comparison
     *  2 - Partial comparison
     * @param {Function} [customizer] The function to customize comparisons.
     * @param {Object} [stack] Tracks traversed `value` and `other` objects.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     */
    function baseIsEqual(value, other, bitmask, customizer, stack) {
      if (value === other) {
        return true;
      }
      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
        return value !== value && other !== other;
      }
      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
    }

    /**
     * A specialized version of `baseIsEqual` for arrays and objects which performs
     * deep comparisons and tracks traversed objects enabling objects with circular
     * references to be compared.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} [stack] Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
      var objIsArr = isArray(object),
          othIsArr = isArray(other),
          objTag = objIsArr ? arrayTag : getTag(object),
          othTag = othIsArr ? arrayTag : getTag(other);

      objTag = objTag == argsTag ? objectTag : objTag;
      othTag = othTag == argsTag ? objectTag : othTag;

      var objIsObj = objTag == objectTag,
          othIsObj = othTag == objectTag,
          isSameTag = objTag == othTag;

      if (isSameTag && isBuffer(object)) {
        if (!isBuffer(other)) {
          return false;
        }
        objIsArr = true;
        objIsObj = false;
      }
      if (isSameTag && !objIsObj) {
        stack || (stack = new Stack);
        return (objIsArr || isTypedArray(object))
          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
      }
      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

        if (objIsWrapped || othIsWrapped) {
          var objUnwrapped = objIsWrapped ? object.value() : object,
              othUnwrapped = othIsWrapped ? other.value() : other;

          stack || (stack = new Stack);
          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
        }
      }
      if (!isSameTag) {
        return false;
      }
      stack || (stack = new Stack);
      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
    }

    /**
     * The base implementation of `_.isMap` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     */
    function baseIsMap(value) {
      return isObjectLike(value) && getTag(value) == mapTag;
    }

    /**
     * The base implementation of `_.isMatch` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Array} matchData The property names, values, and compare flags to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     */
    function baseIsMatch(object, source, matchData, customizer) {
      var index = matchData.length,
          length = index,
          noCustomizer = !customizer;

      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (index--) {
        var data = matchData[index];
        if ((noCustomizer && data[2])
              ? data[1] !== object[data[0]]
              : !(data[0] in object)
            ) {
          return false;
        }
      }
      while (++index < length) {
        data = matchData[index];
        var key = data[0],
            objValue = object[key],
            srcValue = data[1];

        if (noCustomizer && data[2]) {
          if (objValue === undefined && !(key in object)) {
            return false;
          }
        } else {
          var stack = new Stack;
          if (customizer) {
            var result = customizer(objValue, srcValue, key, object, source, stack);
          }
          if (!(result === undefined
                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                : result
              )) {
            return false;
          }
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.isNative` without bad shim checks.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     */
    function baseIsNative(value) {
      if (!isObject(value) || isMasked(value)) {
        return false;
      }
      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
      return pattern.test(toSource(value));
    }

    /**
     * The base implementation of `_.isRegExp` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     */
    function baseIsRegExp(value) {
      return isObjectLike(value) && baseGetTag(value) == regexpTag;
    }

    /**
     * The base implementation of `_.isSet` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     */
    function baseIsSet(value) {
      return isObjectLike(value) && getTag(value) == setTag;
    }

    /**
     * The base implementation of `_.isTypedArray` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     */
    function baseIsTypedArray(value) {
      return isObjectLike(value) &&
        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
    }

    /**
     * The base implementation of `_.iteratee`.
     *
     * @private
     * @param {*} [value=_.identity] The value to convert to an iteratee.
     * @returns {Function} Returns the iteratee.
     */
    function baseIteratee(value) {
      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
      if (typeof value == 'function') {
        return value;
      }
      if (value == null) {
        return identity;
      }
      if (typeof value == 'object') {
        return isArray(value)
          ? baseMatchesProperty(value[0], value[1])
          : baseMatches(value);
      }
      return property(value);
    }

    /**
     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeys(object) {
      if (!isPrototype(object)) {
        return nativeKeys(object);
      }
      var result = [];
      for (var key in Object(object)) {
        if (hasOwnProperty.call(object, key) && key != 'constructor') {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeysIn(object) {
      if (!isObject(object)) {
        return nativeKeysIn(object);
      }
      var isProto = isPrototype(object),
          result = [];

      for (var key in object) {
        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.lt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     */
    function baseLt(value, other) {
      return value < other;
    }

    /**
     * The base implementation of `_.map` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function baseMap(collection, iteratee) {
      var index = -1,
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value, key, collection) {
        result[++index] = iteratee(value, key, collection);
      });
      return result;
    }

    /**
     * The base implementation of `_.matches` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatches(source) {
      var matchData = getMatchData(source);
      if (matchData.length == 1 && matchData[0][2]) {
        return matchesStrictComparable(matchData[0][0], matchData[0][1]);
      }
      return function(object) {
        return object === source || baseIsMatch(object, source, matchData);
      };
    }

    /**
     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
     *
     * @private
     * @param {string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatchesProperty(path, srcValue) {
      if (isKey(path) && isStrictComparable(srcValue)) {
        return matchesStrictComparable(toKey(path), srcValue);
      }
      return function(object) {
        var objValue = get(object, path);
        return (objValue === undefined && objValue === srcValue)
          ? hasIn(object, path)
          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
      };
    }

    /**
     * The base implementation of `_.merge` without support for multiple sources.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} [customizer] The function to customize merged values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMerge(object, source, srcIndex, customizer, stack) {
      if (object === source) {
        return;
      }
      baseFor(source, function(srcValue, key) {
        if (isObject(srcValue)) {
          stack || (stack = new Stack);
          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
        }
        else {
          var newValue = customizer
            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
            : undefined;

          if (newValue === undefined) {
            newValue = srcValue;
          }
          assignMergeValue(object, key, newValue);
        }
      }, keysIn);
    }

    /**
     * A specialized version of `baseMerge` for arrays and objects which performs
     * deep merges and tracks traversed objects enabling objects with circular
     * references to be merged.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {string} key The key of the value to merge.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} mergeFunc The function to merge values.
     * @param {Function} [customizer] The function to customize assigned values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
      var objValue = safeGet(object, key),
          srcValue = safeGet(source, key),
          stacked = stack.get(srcValue);

      if (stacked) {
        assignMergeValue(object, key, stacked);
        return;
      }
      var newValue = customizer
        ? customizer(objValue, srcValue, (key + ''), object, source, stack)
        : undefined;

      var isCommon = newValue === undefined;

      if (isCommon) {
        var isArr = isArray(srcValue),
            isBuff = !isArr && isBuffer(srcValue),
            isTyped = !isArr && !isBuff && isTypedArray(srcValue);

        newValue = srcValue;
        if (isArr || isBuff || isTyped) {
          if (isArray(objValue)) {
            newValue = objValue;
          }
          else if (isArrayLikeObject(objValue)) {
            newValue = copyArray(objValue);
          }
          else if (isBuff) {
            isCommon = false;
            newValue = cloneBuffer(srcValue, true);
          }
          else if (isTyped) {
            isCommon = false;
            newValue = cloneTypedArray(srcValue, true);
          }
          else {
            newValue = [];
          }
        }
        else if (isPlainObject(srcValue) || isArguments(srcValue)) {
          newValue = objValue;
          if (isArguments(objValue)) {
            newValue = toPlainObject(objValue);
          }
          else if (!isObject(objValue) || isFunction(objValue)) {
            newValue = initCloneObject(srcValue);
          }
        }
        else {
          isCommon = false;
        }
      }
      if (isCommon) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, newValue);
        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
        stack['delete'](srcValue);
      }
      assignMergeValue(object, key, newValue);
    }

    /**
     * The base implementation of `_.nth` which doesn't coerce arguments.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {number} n The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     */
    function baseNth(array, n) {
      var length = array.length;
      if (!length) {
        return;
      }
      n += n < 0 ? length : 0;
      return isIndex(n, length) ? array[n] : undefined;
    }

    /**
     * The base implementation of `_.orderBy` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
     * @param {string[]} orders The sort orders of `iteratees`.
     * @returns {Array} Returns the new sorted array.
     */
    function baseOrderBy(collection, iteratees, orders) {
      var index = -1;
      iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee()));

      var result = baseMap(collection, function(value, key, collection) {
        var criteria = arrayMap(iteratees, function(iteratee) {
          return iteratee(value);
        });
        return { 'criteria': criteria, 'index': ++index, 'value': value };
      });

      return baseSortBy(result, function(object, other) {
        return compareMultiple(object, other, orders);
      });
    }

    /**
     * The base implementation of `_.pick` without support for individual
     * property identifiers.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @returns {Object} Returns the new object.
     */
    function basePick(object, paths) {
      return basePickBy(object, paths, function(value, path) {
        return hasIn(object, path);
      });
    }

    /**
     * The base implementation of  `_.pickBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @param {Function} predicate The function invoked per property.
     * @returns {Object} Returns the new object.
     */
    function basePickBy(object, paths, predicate) {
      var index = -1,
          length = paths.length,
          result = {};

      while (++index < length) {
        var path = paths[index],
            value = baseGet(object, path);

        if (predicate(value, path)) {
          baseSet(result, castPath(path, object), value);
        }
      }
      return result;
    }

    /**
     * A specialized version of `baseProperty` which supports deep paths.
     *
     * @private
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     */
    function basePropertyDeep(path) {
      return function(object) {
        return baseGet(object, path);
      };
    }

    /**
     * The base implementation of `_.pullAllBy` without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     */
    function basePullAll(array, values, iteratee, comparator) {
      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
          index = -1,
          length = values.length,
          seen = array;

      if (array === values) {
        values = copyArray(values);
      }
      if (iteratee) {
        seen = arrayMap(array, baseUnary(iteratee));
      }
      while (++index < length) {
        var fromIndex = 0,
            value = values[index],
            computed = iteratee ? iteratee(value) : value;

        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
          if (seen !== array) {
            splice.call(seen, fromIndex, 1);
          }
          splice.call(array, fromIndex, 1);
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.pullAt` without support for individual
     * indexes or capturing the removed elements.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {number[]} indexes The indexes of elements to remove.
     * @returns {Array} Returns `array`.
     */
    function basePullAt(array, indexes) {
      var length = array ? indexes.length : 0,
          lastIndex = length - 1;

      while (length--) {
        var index = indexes[length];
        if (length == lastIndex || index !== previous) {
          var previous = index;
          if (isIndex(index)) {
            splice.call(array, index, 1);
          } else {
            baseUnset(array, index);
          }
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.random` without support for returning
     * floating-point numbers.
     *
     * @private
     * @param {number} lower The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the random number.
     */
    function baseRandom(lower, upper) {
      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
    }

    /**
     * The base implementation of `_.range` and `_.rangeRight` which doesn't
     * coerce arguments.
     *
     * @private
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @param {number} step The value to increment or decrement by.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the range of numbers.
     */
    function baseRange(start, end, step, fromRight) {
      var index = -1,
          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
          result = Array(length);

      while (length--) {
        result[fromRight ? length : ++index] = start;
        start += step;
      }
      return result;
    }

    /**
     * The base implementation of `_.repeat` which doesn't coerce arguments.
     *
     * @private
     * @param {string} string The string to repeat.
     * @param {number} n The number of times to repeat the string.
     * @returns {string} Returns the repeated string.
     */
    function baseRepeat(string, n) {
      var result = '';
      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
        return result;
      }
      // Leverage the exponentiation by squaring algorithm for a faster repeat.
      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
      do {
        if (n % 2) {
          result += string;
        }
        n = nativeFloor(n / 2);
        if (n) {
          string += string;
        }
      } while (n);

      return result;
    }

    /**
     * The base implementation of `_.rest` which doesn't validate or coerce arguments.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     */
    function baseRest(func, start) {
      return setToString(overRest(func, start, identity), func + '');
    }

    /**
     * The base implementation of `_.sample`.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     */
    function baseSample(collection) {
      return arraySample(values(collection));
    }

    /**
     * The base implementation of `_.sampleSize` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function baseSampleSize(collection, n) {
      var array = values(collection);
      return shuffleSelf(array, baseClamp(n, 0, array.length));
    }

    /**
     * The base implementation of `_.set`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseSet(object, path, value, customizer) {
      if (!isObject(object)) {
        return object;
      }
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          lastIndex = length - 1,
          nested = object;

      while (nested != null && ++index < length) {
        var key = toKey(path[index]),
            newValue = value;

        if (index != lastIndex) {
          var objValue = nested[key];
          newValue = customizer ? customizer(objValue, key, nested) : undefined;
          if (newValue === undefined) {
            newValue = isObject(objValue)
              ? objValue
              : (isIndex(path[index + 1]) ? [] : {});
          }
        }
        assignValue(nested, key, newValue);
        nested = nested[key];
      }
      return object;
    }

    /**
     * The base implementation of `setData` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var baseSetData = !metaMap ? identity : function(func, data) {
      metaMap.set(func, data);
      return func;
    };

    /**
     * The base implementation of `setToString` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var baseSetToString = !defineProperty ? identity : function(func, string) {
      return defineProperty(func, 'toString', {
        'configurable': true,
        'enumerable': false,
        'value': constant(string),
        'writable': true
      });
    };

    /**
     * The base implementation of `_.shuffle`.
     *
     * @private
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function baseShuffle(collection) {
      return shuffleSelf(values(collection));
    }

    /**
     * The base implementation of `_.slice` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseSlice(array, start, end) {
      var index = -1,
          length = array.length;

      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = end > length ? length : end;
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : ((end - start) >>> 0);
      start >>>= 0;

      var result = Array(length);
      while (++index < length) {
        result[index] = array[index + start];
      }
      return result;
    }

    /**
     * The base implementation of `_.some` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function baseSome(collection, predicate) {
      var result;

      baseEach(collection, function(value, index, collection) {
        result = predicate(value, index, collection);
        return !result;
      });
      return !!result;
    }

    /**
     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
     * performs a binary search of `array` to determine the index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndex(array, value, retHighest) {
      var low = 0,
          high = array == null ? low : array.length;

      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
        while (low < high) {
          var mid = (low + high) >>> 1,
              computed = array[mid];

          if (computed !== null && !isSymbol(computed) &&
              (retHighest ? (computed <= value) : (computed < value))) {
            low = mid + 1;
          } else {
            high = mid;
          }
        }
        return high;
      }
      return baseSortedIndexBy(array, value, identity, retHighest);
    }

    /**
     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
     * which invokes `iteratee` for `value` and each element of `array` to compute
     * their sort ranking. The iteratee is invoked with one argument; (value).
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} iteratee The iteratee invoked per element.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndexBy(array, value, iteratee, retHighest) {
      value = iteratee(value);

      var low = 0,
          high = array == null ? 0 : array.length,
          valIsNaN = value !== value,
          valIsNull = value === null,
          valIsSymbol = isSymbol(value),
          valIsUndefined = value === undefined;

      while (low < high) {
        var mid = nativeFloor((low + high) / 2),
            computed = iteratee(array[mid]),
            othIsDefined = computed !== undefined,
            othIsNull = computed === null,
            othIsReflexive = computed === computed,
            othIsSymbol = isSymbol(computed);

        if (valIsNaN) {
          var setLow = retHighest || othIsReflexive;
        } else if (valIsUndefined) {
          setLow = othIsReflexive && (retHighest || othIsDefined);
        } else if (valIsNull) {
          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
        } else if (valIsSymbol) {
          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
        } else if (othIsNull || othIsSymbol) {
          setLow = false;
        } else {
          setLow = retHighest ? (computed <= value) : (computed < value);
        }
        if (setLow) {
          low = mid + 1;
        } else {
          high = mid;
        }
      }
      return nativeMin(high, MAX_ARRAY_INDEX);
    }

    /**
     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
     * support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseSortedUniq(array, iteratee) {
      var index = -1,
          length = array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        if (!index || !eq(computed, seen)) {
          var seen = computed;
          result[resIndex++] = value === 0 ? 0 : value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.toNumber` which doesn't ensure correct
     * conversions of binary, hexadecimal, or octal string values.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     */
    function baseToNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      return +value;
    }

    /**
     * The base implementation of `_.toString` which doesn't convert nullish
     * values to empty strings.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     */
    function baseToString(value) {
      // Exit early for strings to avoid a performance hit in some environments.
      if (typeof value == 'string') {
        return value;
      }
      if (isArray(value)) {
        // Recursively convert values (susceptible to call stack limits).
        return arrayMap(value, baseToString) + '';
      }
      if (isSymbol(value)) {
        return symbolToString ? symbolToString.call(value) : '';
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * The base implementation of `_.uniqBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseUniq(array, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          length = array.length,
          isCommon = true,
          result = [],
          seen = result;

      if (comparator) {
        isCommon = false;
        includes = arrayIncludesWith;
      }
      else if (length >= LARGE_ARRAY_SIZE) {
        var set = iteratee ? null : createSet(array);
        if (set) {
          return setToArray(set);
        }
        isCommon = false;
        includes = cacheHas;
        seen = new SetCache;
      }
      else {
        seen = iteratee ? [] : result;
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var seenIndex = seen.length;
          while (seenIndex--) {
            if (seen[seenIndex] === computed) {
              continue outer;
            }
          }
          if (iteratee) {
            seen.push(computed);
          }
          result.push(value);
        }
        else if (!includes(seen, computed, comparator)) {
          if (seen !== result) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.unset`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The property path to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     */
    function baseUnset(object, path) {
      path = castPath(path, object);
      object = parent(object, path);
      return object == null || delete object[toKey(last(path))];
    }

    /**
     * The base implementation of `_.update`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to update.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseUpdate(object, path, updater, customizer) {
      return baseSet(object, path, updater(baseGet(object, path)), customizer);
    }

    /**
     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
     * without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {Function} predicate The function invoked per iteration.
     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseWhile(array, predicate, isDrop, fromRight) {
      var length = array.length,
          index = fromRight ? length : -1;

      while ((fromRight ? index-- : ++index < length) &&
        predicate(array[index], index, array)) {}

      return isDrop
        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
    }

    /**
     * The base implementation of `wrapperValue` which returns the result of
     * performing a sequence of actions on the unwrapped `value`, where each
     * successive action is supplied the return value of the previous.
     *
     * @private
     * @param {*} value The unwrapped value.
     * @param {Array} actions Actions to perform to resolve the unwrapped value.
     * @returns {*} Returns the resolved value.
     */
    function baseWrapperValue(value, actions) {
      var result = value;
      if (result instanceof LazyWrapper) {
        result = result.value();
      }
      return arrayReduce(actions, function(result, action) {
        return action.func.apply(action.thisArg, arrayPush([result], action.args));
      }, result);
    }

    /**
     * The base implementation of methods like `_.xor`, without support for
     * iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of values.
     */
    function baseXor(arrays, iteratee, comparator) {
      var length = arrays.length;
      if (length < 2) {
        return length ? baseUniq(arrays[0]) : [];
      }
      var index = -1,
          result = Array(length);

      while (++index < length) {
        var array = arrays[index],
            othIndex = -1;

        while (++othIndex < length) {
          if (othIndex != index) {
            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
          }
        }
      }
      return baseUniq(baseFlatten(result, 1), iteratee, comparator);
    }

    /**
     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
     *
     * @private
     * @param {Array} props The property identifiers.
     * @param {Array} values The property values.
     * @param {Function} assignFunc The function to assign values.
     * @returns {Object} Returns the new object.
     */
    function baseZipObject(props, values, assignFunc) {
      var index = -1,
          length = props.length,
          valsLength = values.length,
          result = {};

      while (++index < length) {
        var value = index < valsLength ? values[index] : undefined;
        assignFunc(result, props[index], value);
      }
      return result;
    }

    /**
     * Casts `value` to an empty array if it's not an array like object.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Array|Object} Returns the cast array-like object.
     */
    function castArrayLikeObject(value) {
      return isArrayLikeObject(value) ? value : [];
    }

    /**
     * Casts `value` to `identity` if it's not a function.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Function} Returns cast function.
     */
    function castFunction(value) {
      return typeof value == 'function' ? value : identity;
    }

    /**
     * Casts `value` to a path array if it's not one.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {Object} [object] The object to query keys on.
     * @returns {Array} Returns the cast property path array.
     */
    function castPath(value, object) {
      if (isArray(value)) {
        return value;
      }
      return isKey(value, object) ? [value] : stringToPath(toString(value));
    }

    /**
     * A `baseRest` alias which can be replaced with `identity` by module
     * replacement plugins.
     *
     * @private
     * @type {Function}
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    var castRest = baseRest;

    /**
     * Casts `array` to a slice if it's needed.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {number} start The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the cast slice.
     */
    function castSlice(array, start, end) {
      var length = array.length;
      end = end === undefined ? length : end;
      return (!start && end >= length) ? array : baseSlice(array, start, end);
    }

    /**
     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
     *
     * @private
     * @param {number|Object} id The timer id or timeout object of the timer to clear.
     */
    var clearTimeout = ctxClearTimeout || function(id) {
      return root.clearTimeout(id);
    };

    /**
     * Creates a clone of  `buffer`.
     *
     * @private
     * @param {Buffer} buffer The buffer to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Buffer} Returns the cloned buffer.
     */
    function cloneBuffer(buffer, isDeep) {
      if (isDeep) {
        return buffer.slice();
      }
      var length = buffer.length,
          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

      buffer.copy(result);
      return result;
    }

    /**
     * Creates a clone of `arrayBuffer`.
     *
     * @private
     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
     * @returns {ArrayBuffer} Returns the cloned array buffer.
     */
    function cloneArrayBuffer(arrayBuffer) {
      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
      new Uint8Array(result).set(new Uint8Array(arrayBuffer));
      return result;
    }

    /**
     * Creates a clone of `dataView`.
     *
     * @private
     * @param {Object} dataView The data view to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned data view.
     */
    function cloneDataView(dataView, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
    }

    /**
     * Creates a clone of `regexp`.
     *
     * @private
     * @param {Object} regexp The regexp to clone.
     * @returns {Object} Returns the cloned regexp.
     */
    function cloneRegExp(regexp) {
      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
      result.lastIndex = regexp.lastIndex;
      return result;
    }

    /**
     * Creates a clone of the `symbol` object.
     *
     * @private
     * @param {Object} symbol The symbol object to clone.
     * @returns {Object} Returns the cloned symbol object.
     */
    function cloneSymbol(symbol) {
      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
    }

    /**
     * Creates a clone of `typedArray`.
     *
     * @private
     * @param {Object} typedArray The typed array to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned typed array.
     */
    function cloneTypedArray(typedArray, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
    }

    /**
     * Compares values to sort them in ascending order.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {number} Returns the sort order indicator for `value`.
     */
    function compareAscending(value, other) {
      if (value !== other) {
        var valIsDefined = value !== undefined,
            valIsNull = value === null,
            valIsReflexive = value === value,
            valIsSymbol = isSymbol(value);

        var othIsDefined = other !== undefined,
            othIsNull = other === null,
            othIsReflexive = other === other,
            othIsSymbol = isSymbol(other);

        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
            (valIsNull && othIsDefined && othIsReflexive) ||
            (!valIsDefined && othIsReflexive) ||
            !valIsReflexive) {
          return 1;
        }
        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
            (othIsNull && valIsDefined && valIsReflexive) ||
            (!othIsDefined && valIsReflexive) ||
            !othIsReflexive) {
          return -1;
        }
      }
      return 0;
    }

    /**
     * Used by `_.orderBy` to compare multiple properties of a value to another
     * and stable sort them.
     *
     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
     * specify an order of "desc" for descending or "asc" for ascending sort order
     * of corresponding values.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {boolean[]|string[]} orders The order to sort by for each property.
     * @returns {number} Returns the sort order indicator for `object`.
     */
    function compareMultiple(object, other, orders) {
      var index = -1,
          objCriteria = object.criteria,
          othCriteria = other.criteria,
          length = objCriteria.length,
          ordersLength = orders.length;

      while (++index < length) {
        var result = compareAscending(objCriteria[index], othCriteria[index]);
        if (result) {
          if (index >= ordersLength) {
            return result;
          }
          var order = orders[index];
          return result * (order == 'desc' ? -1 : 1);
        }
      }
      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
      // that causes it, under certain circumstances, to provide the same value for
      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
      // for more details.
      //
      // This also ensures a stable sort in V8 and other engines.
      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
      return object.index - other.index;
    }

    /**
     * Creates an array that is the composition of partially applied arguments,
     * placeholders, and provided arguments into a single array of arguments.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to prepend to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgs(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersLength = holders.length,
          leftIndex = -1,
          leftLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(leftLength + rangeLength),
          isUncurried = !isCurried;

      while (++leftIndex < leftLength) {
        result[leftIndex] = partials[leftIndex];
      }
      while (++argsIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[holders[argsIndex]] = args[argsIndex];
        }
      }
      while (rangeLength--) {
        result[leftIndex++] = args[argsIndex++];
      }
      return result;
    }

    /**
     * This function is like `composeArgs` except that the arguments composition
     * is tailored for `_.partialRight`.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to append to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgsRight(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersIndex = -1,
          holdersLength = holders.length,
          rightIndex = -1,
          rightLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(rangeLength + rightLength),
          isUncurried = !isCurried;

      while (++argsIndex < rangeLength) {
        result[argsIndex] = args[argsIndex];
      }
      var offset = argsIndex;
      while (++rightIndex < rightLength) {
        result[offset + rightIndex] = partials[rightIndex];
      }
      while (++holdersIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[offset + holders[holdersIndex]] = args[argsIndex++];
        }
      }
      return result;
    }

    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function copyArray(source, array) {
      var index = -1,
          length = source.length;

      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }

    /**
     * Copies properties of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy properties from.
     * @param {Array} props The property identifiers to copy.
     * @param {Object} [object={}] The object to copy properties to.
     * @param {Function} [customizer] The function to customize copied values.
     * @returns {Object} Returns `object`.
     */
    function copyObject(source, props, object, customizer) {
      var isNew = !object;
      object || (object = {});

      var index = -1,
          length = props.length;

      while (++index < length) {
        var key = props[index];

        var newValue = customizer
          ? customizer(object[key], source[key], key, object, source)
          : undefined;

        if (newValue === undefined) {
          newValue = source[key];
        }
        if (isNew) {
          baseAssignValue(object, key, newValue);
        } else {
          assignValue(object, key, newValue);
        }
      }
      return object;
    }

    /**
     * Copies own symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbols(source, object) {
      return copyObject(source, getSymbols(source), object);
    }

    /**
     * Copies own and inherited symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbolsIn(source, object) {
      return copyObject(source, getSymbolsIn(source), object);
    }

    /**
     * Creates a function like `_.groupBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} [initializer] The accumulator object initializer.
     * @returns {Function} Returns the new aggregator function.
     */
    function createAggregator(setter, initializer) {
      return function(collection, iteratee) {
        var func = isArray(collection) ? arrayAggregator : baseAggregator,
            accumulator = initializer ? initializer() : {};

        return func(collection, setter, getIteratee(iteratee, 2), accumulator);
      };
    }

    /**
     * Creates a function like `_.assign`.
     *
     * @private
     * @param {Function} assigner The function to assign values.
     * @returns {Function} Returns the new assigner function.
     */
    function createAssigner(assigner) {
      return baseRest(function(object, sources) {
        var index = -1,
            length = sources.length,
            customizer = length > 1 ? sources[length - 1] : undefined,
            guard = length > 2 ? sources[2] : undefined;

        customizer = (assigner.length > 3 && typeof customizer == 'function')
          ? (length--, customizer)
          : undefined;

        if (guard && isIterateeCall(sources[0], sources[1], guard)) {
          customizer = length < 3 ? undefined : customizer;
          length = 1;
        }
        object = Object(object);
        while (++index < length) {
          var source = sources[index];
          if (source) {
            assigner(object, source, index, customizer);
          }
        }
        return object;
      });
    }

    /**
     * Creates a `baseEach` or `baseEachRight` function.
     *
     * @private
     * @param {Function} eachFunc The function to iterate over a collection.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseEach(eachFunc, fromRight) {
      return function(collection, iteratee) {
        if (collection == null) {
          return collection;
        }
        if (!isArrayLike(collection)) {
          return eachFunc(collection, iteratee);
        }
        var length = collection.length,
            index = fromRight ? length : -1,
            iterable = Object(collection);

        while ((fromRight ? index-- : ++index < length)) {
          if (iteratee(iterable[index], index, iterable) === false) {
            break;
          }
        }
        return collection;
      };
    }

    /**
     * Creates a base function for methods like `_.forIn` and `_.forOwn`.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseFor(fromRight) {
      return function(object, iteratee, keysFunc) {
        var index = -1,
            iterable = Object(object),
            props = keysFunc(object),
            length = props.length;

        while (length--) {
          var key = props[fromRight ? length : ++index];
          if (iteratee(iterable[key], key, iterable) === false) {
            break;
          }
        }
        return object;
      };
    }

    /**
     * Creates a function that wraps `func` to invoke it with the optional `this`
     * binding of `thisArg`.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createBind(func, bitmask, thisArg) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return fn.apply(isBind ? thisArg : this, arguments);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.lowerFirst`.
     *
     * @private
     * @param {string} methodName The name of the `String` case method to use.
     * @returns {Function} Returns the new case function.
     */
    function createCaseFirst(methodName) {
      return function(string) {
        string = toString(string);

        var strSymbols = hasUnicode(string)
          ? stringToArray(string)
          : undefined;

        var chr = strSymbols
          ? strSymbols[0]
          : string.charAt(0);

        var trailing = strSymbols
          ? castSlice(strSymbols, 1).join('')
          : string.slice(1);

        return chr[methodName]() + trailing;
      };
    }

    /**
     * Creates a function like `_.camelCase`.
     *
     * @private
     * @param {Function} callback The function to combine each word.
     * @returns {Function} Returns the new compounder function.
     */
    function createCompounder(callback) {
      return function(string) {
        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
      };
    }

    /**
     * Creates a function that produces an instance of `Ctor` regardless of
     * whether it was invoked as part of a `new` expression or by `call` or `apply`.
     *
     * @private
     * @param {Function} Ctor The constructor to wrap.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCtor(Ctor) {
      return function() {
        // Use a `switch` statement to work with class constructors. See
        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
        // for more details.
        var args = arguments;
        switch (args.length) {
          case 0: return new Ctor;
          case 1: return new Ctor(args[0]);
          case 2: return new Ctor(args[0], args[1]);
          case 3: return new Ctor(args[0], args[1], args[2]);
          case 4: return new Ctor(args[0], args[1], args[2], args[3]);
          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
        }
        var thisBinding = baseCreate(Ctor.prototype),
            result = Ctor.apply(thisBinding, args);

        // Mimic the constructor's `return` behavior.
        // See https://es5.github.io/#x13.2.2 for more details.
        return isObject(result) ? result : thisBinding;
      };
    }

    /**
     * Creates a function that wraps `func` to enable currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {number} arity The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCurry(func, bitmask, arity) {
      var Ctor = createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length,
            placeholder = getHolder(wrapper);

        while (index--) {
          args[index] = arguments[index];
        }
        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
          ? []
          : replaceHolders(args, placeholder);

        length -= holders.length;
        if (length < arity) {
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, undefined,
            args, holders, undefined, undefined, arity - length);
        }
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return apply(fn, this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.find` or `_.findLast` function.
     *
     * @private
     * @param {Function} findIndexFunc The function to find the collection index.
     * @returns {Function} Returns the new find function.
     */
    function createFind(findIndexFunc) {
      return function(collection, predicate, fromIndex) {
        var iterable = Object(collection);
        if (!isArrayLike(collection)) {
          var iteratee = getIteratee(predicate, 3);
          collection = keys(collection);
          predicate = function(key) { return iteratee(iterable[key], key, iterable); };
        }
        var index = findIndexFunc(collection, predicate, fromIndex);
        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
      };
    }

    /**
     * Creates a `_.flow` or `_.flowRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new flow function.
     */
    function createFlow(fromRight) {
      return flatRest(function(funcs) {
        var length = funcs.length,
            index = length,
            prereq = LodashWrapper.prototype.thru;

        if (fromRight) {
          funcs.reverse();
        }
        while (index--) {
          var func = funcs[index];
          if (typeof func != 'function') {
            throw new TypeError(FUNC_ERROR_TEXT);
          }
          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
            var wrapper = new LodashWrapper([], true);
          }
        }
        index = wrapper ? index : length;
        while (++index < length) {
          func = funcs[index];

          var funcName = getFuncName(func),
              data = funcName == 'wrapper' ? getData(func) : undefined;

          if (data && isLaziable(data[0]) &&
                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                !data[4].length && data[9] == 1
              ) {
            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
          } else {
            wrapper = (func.length == 1 && isLaziable(func))
              ? wrapper[funcName]()
              : wrapper.thru(func);
          }
        }
        return function() {
          var args = arguments,
              value = args[0];

          if (wrapper && args.length == 1 && isArray(value)) {
            return wrapper.plant(value).value();
          }
          var index = 0,
              result = length ? funcs[index].apply(this, args) : value;

          while (++index < length) {
            result = funcs[index].call(this, result);
          }
          return result;
        };
      });
    }

    /**
     * Creates a function that wraps `func` to invoke it with optional `this`
     * binding of `thisArg`, partial application, and currying.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [partialsRight] The arguments to append to those provided
     *  to the new function.
     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
      var isAry = bitmask & WRAP_ARY_FLAG,
          isBind = bitmask & WRAP_BIND_FLAG,
          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
          isFlip = bitmask & WRAP_FLIP_FLAG,
          Ctor = isBindKey ? undefined : createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length;

        while (index--) {
          args[index] = arguments[index];
        }
        if (isCurried) {
          var placeholder = getHolder(wrapper),
              holdersCount = countHolders(args, placeholder);
        }
        if (partials) {
          args = composeArgs(args, partials, holders, isCurried);
        }
        if (partialsRight) {
          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
        }
        length -= holdersCount;
        if (isCurried && length < arity) {
          var newHolders = replaceHolders(args, placeholder);
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, thisArg,
            args, newHolders, argPos, ary, arity - length
          );
        }
        var thisBinding = isBind ? thisArg : this,
            fn = isBindKey ? thisBinding[func] : func;

        length = args.length;
        if (argPos) {
          args = reorder(args, argPos);
        } else if (isFlip && length > 1) {
          args.reverse();
        }
        if (isAry && ary < length) {
          args.length = ary;
        }
        if (this && this !== root && this instanceof wrapper) {
          fn = Ctor || createCtor(fn);
        }
        return fn.apply(thisBinding, args);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.invertBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} toIteratee The function to resolve iteratees.
     * @returns {Function} Returns the new inverter function.
     */
    function createInverter(setter, toIteratee) {
      return function(object, iteratee) {
        return baseInverter(object, setter, toIteratee(iteratee), {});
      };
    }

    /**
     * Creates a function that performs a mathematical operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @param {number} [defaultValue] The value used for `undefined` arguments.
     * @returns {Function} Returns the new mathematical operation function.
     */
    function createMathOperation(operator, defaultValue) {
      return function(value, other) {
        var result;
        if (value === undefined && other === undefined) {
          return defaultValue;
        }
        if (value !== undefined) {
          result = value;
        }
        if (other !== undefined) {
          if (result === undefined) {
            return other;
          }
          if (typeof value == 'string' || typeof other == 'string') {
            value = baseToString(value);
            other = baseToString(other);
          } else {
            value = baseToNumber(value);
            other = baseToNumber(other);
          }
          result = operator(value, other);
        }
        return result;
      };
    }

    /**
     * Creates a function like `_.over`.
     *
     * @private
     * @param {Function} arrayFunc The function to iterate over iteratees.
     * @returns {Function} Returns the new over function.
     */
    function createOver(arrayFunc) {
      return flatRest(function(iteratees) {
        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
        return baseRest(function(args) {
          var thisArg = this;
          return arrayFunc(iteratees, function(iteratee) {
            return apply(iteratee, thisArg, args);
          });
        });
      });
    }

    /**
     * Creates the padding for `string` based on `length`. The `chars` string
     * is truncated if the number of characters exceeds `length`.
     *
     * @private
     * @param {number} length The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padding for `string`.
     */
    function createPadding(length, chars) {
      chars = chars === undefined ? ' ' : baseToString(chars);

      var charsLength = chars.length;
      if (charsLength < 2) {
        return charsLength ? baseRepeat(chars, length) : chars;
      }
      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
      return hasUnicode(chars)
        ? castSlice(stringToArray(result), 0, length).join('')
        : result.slice(0, length);
    }

    /**
     * Creates a function that wraps `func` to invoke it with the `this` binding
     * of `thisArg` and `partials` prepended to the arguments it receives.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} partials The arguments to prepend to those provided to
     *  the new function.
     * @returns {Function} Returns the new wrapped function.
     */
    function createPartial(func, bitmask, thisArg, partials) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var argsIndex = -1,
            argsLength = arguments.length,
            leftIndex = -1,
            leftLength = partials.length,
            args = Array(leftLength + argsLength),
            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;

        while (++leftIndex < leftLength) {
          args[leftIndex] = partials[leftIndex];
        }
        while (argsLength--) {
          args[leftIndex++] = arguments[++argsIndex];
        }
        return apply(fn, isBind ? thisArg : this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.range` or `_.rangeRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new range function.
     */
    function createRange(fromRight) {
      return function(start, end, step) {
        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
          end = step = undefined;
        }
        // Ensure the sign of `-0` is preserved.
        start = toFinite(start);
        if (end === undefined) {
          end = start;
          start = 0;
        } else {
          end = toFinite(end);
        }
        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
        return baseRange(start, end, step, fromRight);
      };
    }

    /**
     * Creates a function that performs a relational operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @returns {Function} Returns the new relational operation function.
     */
    function createRelationalOperation(operator) {
      return function(value, other) {
        if (!(typeof value == 'string' && typeof other == 'string')) {
          value = toNumber(value);
          other = toNumber(other);
        }
        return operator(value, other);
      };
    }

    /**
     * Creates a function that wraps `func` to continue currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {Function} wrapFunc The function to create the `func` wrapper.
     * @param {*} placeholder The placeholder value.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
      var isCurry = bitmask & WRAP_CURRY_FLAG,
          newHolders = isCurry ? holders : undefined,
          newHoldersRight = isCurry ? undefined : holders,
          newPartials = isCurry ? partials : undefined,
          newPartialsRight = isCurry ? undefined : partials;

      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);

      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
      }
      var newData = [
        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
        newHoldersRight, argPos, ary, arity
      ];

      var result = wrapFunc.apply(undefined, newData);
      if (isLaziable(func)) {
        setData(result, newData);
      }
      result.placeholder = placeholder;
      return setWrapToString(result, func, bitmask);
    }

    /**
     * Creates a function like `_.round`.
     *
     * @private
     * @param {string} methodName The name of the `Math` method to use when rounding.
     * @returns {Function} Returns the new round function.
     */
    function createRound(methodName) {
      var func = Math[methodName];
      return function(number, precision) {
        number = toNumber(number);
        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
        if (precision) {
          // Shift with exponential notation to avoid floating-point issues.
          // See [MDN](https://mdn.io/round#Examples) for more details.
          var pair = (toString(number) + 'e').split('e'),
              value = func(pair[0] + 'e' + (+pair[1] + precision));

          pair = (toString(value) + 'e').split('e');
          return +(pair[0] + 'e' + (+pair[1] - precision));
        }
        return func(number);
      };
    }

    /**
     * Creates a set object of `values`.
     *
     * @private
     * @param {Array} values The values to add to the set.
     * @returns {Object} Returns the new set.
     */
    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
      return new Set(values);
    };

    /**
     * Creates a `_.toPairs` or `_.toPairsIn` function.
     *
     * @private
     * @param {Function} keysFunc The function to get the keys of a given object.
     * @returns {Function} Returns the new pairs function.
     */
    function createToPairs(keysFunc) {
      return function(object) {
        var tag = getTag(object);
        if (tag == mapTag) {
          return mapToArray(object);
        }
        if (tag == setTag) {
          return setToPairs(object);
        }
        return baseToPairs(object, keysFunc(object));
      };
    }

    /**
     * Creates a function that either curries or invokes `func` with optional
     * `this` binding and partially applied arguments.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags.
     *    1 - `_.bind`
     *    2 - `_.bindKey`
     *    4 - `_.curry` or `_.curryRight` of a bound function
     *    8 - `_.curry`
     *   16 - `_.curryRight`
     *   32 - `_.partial`
     *   64 - `_.partialRight`
     *  128 - `_.rearg`
     *  256 - `_.ary`
     *  512 - `_.flip`
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to be partially applied.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
      if (!isBindKey && typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var length = partials ? partials.length : 0;
      if (!length) {
        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
        partials = holders = undefined;
      }
      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
      arity = arity === undefined ? arity : toInteger(arity);
      length -= holders ? holders.length : 0;

      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
        var partialsRight = partials,
            holdersRight = holders;

        partials = holders = undefined;
      }
      var data = isBindKey ? undefined : getData(func);

      var newData = [
        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
        argPos, ary, arity
      ];

      if (data) {
        mergeData(newData, data);
      }
      func = newData[0];
      bitmask = newData[1];
      thisArg = newData[2];
      partials = newData[3];
      holders = newData[4];
      arity = newData[9] = newData[9] === undefined
        ? (isBindKey ? 0 : func.length)
        : nativeMax(newData[9] - length, 0);

      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
      }
      if (!bitmask || bitmask == WRAP_BIND_FLAG) {
        var result = createBind(func, bitmask, thisArg);
      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
        result = createCurry(func, bitmask, arity);
      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
        result = createPartial(func, bitmask, thisArg, partials);
      } else {
        result = createHybrid.apply(undefined, newData);
      }
      var setter = data ? baseSetData : setData;
      return setWrapToString(setter(result, newData), func, bitmask);
    }

    /**
     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
     * of source objects to the destination object for all destination properties
     * that resolve to `undefined`.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to assign.
     * @param {Object} object The parent object of `objValue`.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsAssignIn(objValue, srcValue, key, object) {
      if (objValue === undefined ||
          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
        return srcValue;
      }
      return objValue;
    }

    /**
     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
     * objects into destination objects that are passed thru.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to merge.
     * @param {Object} object The parent object of `objValue`.
     * @param {Object} source The parent object of `srcValue`.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
      if (isObject(objValue) && isObject(srcValue)) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, objValue);
        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
        stack['delete'](srcValue);
      }
      return objValue;
    }

    /**
     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
     * objects.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {string} key The key of the property to inspect.
     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
     */
    function customOmitClone(value) {
      return isPlainObject(value) ? undefined : value;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for arrays with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Array} array The array to compare.
     * @param {Array} other The other array to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `array` and `other` objects.
     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
     */
    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          arrLength = array.length,
          othLength = other.length;

      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
        return false;
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(array);
      if (stacked && stack.get(other)) {
        return stacked == other;
      }
      var index = -1,
          result = true,
          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;

      stack.set(array, other);
      stack.set(other, array);

      // Ignore non-index properties.
      while (++index < arrLength) {
        var arrValue = array[index],
            othValue = other[index];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, arrValue, index, other, array, stack)
            : customizer(arrValue, othValue, index, array, other, stack);
        }
        if (compared !== undefined) {
          if (compared) {
            continue;
          }
          result = false;
          break;
        }
        // Recursively compare arrays (susceptible to call stack limits).
        if (seen) {
          if (!arraySome(other, function(othValue, othIndex) {
                if (!cacheHas(seen, othIndex) &&
                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                  return seen.push(othIndex);
                }
              })) {
            result = false;
            break;
          }
        } else if (!(
              arrValue === othValue ||
                equalFunc(arrValue, othValue, bitmask, customizer, stack)
            )) {
          result = false;
          break;
        }
      }
      stack['delete'](array);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for comparing objects of
     * the same `toStringTag`.
     *
     * **Note:** This function only supports comparing values with tags of
     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {string} tag The `toStringTag` of the objects to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
      switch (tag) {
        case dataViewTag:
          if ((object.byteLength != other.byteLength) ||
              (object.byteOffset != other.byteOffset)) {
            return false;
          }
          object = object.buffer;
          other = other.buffer;

        case arrayBufferTag:
          if ((object.byteLength != other.byteLength) ||
              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
            return false;
          }
          return true;

        case boolTag:
        case dateTag:
        case numberTag:
          // Coerce booleans to `1` or `0` and dates to milliseconds.
          // Invalid dates are coerced to `NaN`.
          return eq(+object, +other);

        case errorTag:
          return object.name == other.name && object.message == other.message;

        case regexpTag:
        case stringTag:
          // Coerce regexes to strings and treat strings, primitives and objects,
          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
          // for more details.
          return object == (other + '');

        case mapTag:
          var convert = mapToArray;

        case setTag:
          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
          convert || (convert = setToArray);

          if (object.size != other.size && !isPartial) {
            return false;
          }
          // Assume cyclic values are equal.
          var stacked = stack.get(object);
          if (stacked) {
            return stacked == other;
          }
          bitmask |= COMPARE_UNORDERED_FLAG;

          // Recursively compare objects (susceptible to call stack limits).
          stack.set(object, other);
          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
          stack['delete'](object);
          return result;

        case symbolTag:
          if (symbolValueOf) {
            return symbolValueOf.call(object) == symbolValueOf.call(other);
          }
      }
      return false;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for objects with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          objProps = getAllKeys(object),
          objLength = objProps.length,
          othProps = getAllKeys(other),
          othLength = othProps.length;

      if (objLength != othLength && !isPartial) {
        return false;
      }
      var index = objLength;
      while (index--) {
        var key = objProps[index];
        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
          return false;
        }
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(object);
      if (stacked && stack.get(other)) {
        return stacked == other;
      }
      var result = true;
      stack.set(object, other);
      stack.set(other, object);

      var skipCtor = isPartial;
      while (++index < objLength) {
        key = objProps[index];
        var objValue = object[key],
            othValue = other[key];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, objValue, key, other, object, stack)
            : customizer(objValue, othValue, key, object, other, stack);
        }
        // Recursively compare objects (susceptible to call stack limits).
        if (!(compared === undefined
              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
              : compared
            )) {
          result = false;
          break;
        }
        skipCtor || (skipCtor = key == 'constructor');
      }
      if (result && !skipCtor) {
        var objCtor = object.constructor,
            othCtor = other.constructor;

        // Non `Object` object instances with different constructors are not equal.
        if (objCtor != othCtor &&
            ('constructor' in object && 'constructor' in other) &&
            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
              typeof othCtor == 'function' && othCtor instanceof othCtor)) {
          result = false;
        }
      }
      stack['delete'](object);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseRest` which flattens the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    function flatRest(func) {
      return setToString(overRest(func, undefined, flatten), func + '');
    }

    /**
     * Creates an array of own enumerable property names and symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeys(object) {
      return baseGetAllKeys(object, keys, getSymbols);
    }

    /**
     * Creates an array of own and inherited enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeysIn(object) {
      return baseGetAllKeys(object, keysIn, getSymbolsIn);
    }

    /**
     * Gets metadata for `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {*} Returns the metadata for `func`.
     */
    var getData = !metaMap ? noop : function(func) {
      return metaMap.get(func);
    };

    /**
     * Gets the name of `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {string} Returns the function name.
     */
    function getFuncName(func) {
      var result = (func.name + ''),
          array = realNames[result],
          length = hasOwnProperty.call(realNames, result) ? array.length : 0;

      while (length--) {
        var data = array[length],
            otherFunc = data.func;
        if (otherFunc == null || otherFunc == func) {
          return data.name;
        }
      }
      return result;
    }

    /**
     * Gets the argument placeholder value for `func`.
     *
     * @private
     * @param {Function} func The function to inspect.
     * @returns {*} Returns the placeholder value.
     */
    function getHolder(func) {
      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
      return object.placeholder;
    }

    /**
     * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
     * this function returns the custom method, otherwise it returns `baseIteratee`.
     * If arguments are provided, the chosen function is invoked with them and
     * its result is returned.
     *
     * @private
     * @param {*} [value] The value to convert to an iteratee.
     * @param {number} [arity] The arity of the created iteratee.
     * @returns {Function} Returns the chosen function or its result.
     */
    function getIteratee() {
      var result = lodash.iteratee || iteratee;
      result = result === iteratee ? baseIteratee : result;
      return arguments.length ? result(arguments[0], arguments[1]) : result;
    }

    /**
     * Gets the data for `map`.
     *
     * @private
     * @param {Object} map The map to query.
     * @param {string} key The reference key.
     * @returns {*} Returns the map data.
     */
    function getMapData(map, key) {
      var data = map.__data__;
      return isKeyable(key)
        ? data[typeof key == 'string' ? 'string' : 'hash']
        : data.map;
    }

    /**
     * Gets the property names, values, and compare flags of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the match data of `object`.
     */
    function getMatchData(object) {
      var result = keys(object),
          length = result.length;

      while (length--) {
        var key = result[length],
            value = object[key];

        result[length] = [key, value, isStrictComparable(value)];
      }
      return result;
    }

    /**
     * Gets the native function at `key` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the method to get.
     * @returns {*} Returns the function if it's native, else `undefined`.
     */
    function getNative(object, key) {
      var value = getValue(object, key);
      return baseIsNative(value) ? value : undefined;
    }

    /**
     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the raw `toStringTag`.
     */
    function getRawTag(value) {
      var isOwn = hasOwnProperty.call(value, symToStringTag),
          tag = value[symToStringTag];

      try {
        value[symToStringTag] = undefined;
        var unmasked = true;
      } catch (e) {}

      var result = nativeObjectToString.call(value);
      if (unmasked) {
        if (isOwn) {
          value[symToStringTag] = tag;
        } else {
          delete value[symToStringTag];
        }
      }
      return result;
    }

    /**
     * Creates an array of the own enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
      if (object == null) {
        return [];
      }
      object = Object(object);
      return arrayFilter(nativeGetSymbols(object), function(symbol) {
        return propertyIsEnumerable.call(object, symbol);
      });
    };

    /**
     * Creates an array of the own and inherited enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
      var result = [];
      while (object) {
        arrayPush(result, getSymbols(object));
        object = getPrototype(object);
      }
      return result;
    };

    /**
     * Gets the `toStringTag` of `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    var getTag = baseGetTag;

    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
        (Map && getTag(new Map) != mapTag) ||
        (Promise && getTag(Promise.resolve()) != promiseTag) ||
        (Set && getTag(new Set) != setTag) ||
        (WeakMap && getTag(new WeakMap) != weakMapTag)) {
      getTag = function(value) {
        var result = baseGetTag(value),
            Ctor = result == objectTag ? value.constructor : undefined,
            ctorString = Ctor ? toSource(Ctor) : '';

        if (ctorString) {
          switch (ctorString) {
            case dataViewCtorString: return dataViewTag;
            case mapCtorString: return mapTag;
            case promiseCtorString: return promiseTag;
            case setCtorString: return setTag;
            case weakMapCtorString: return weakMapTag;
          }
        }
        return result;
      };
    }

    /**
     * Gets the view, applying any `transforms` to the `start` and `end` positions.
     *
     * @private
     * @param {number} start The start of the view.
     * @param {number} end The end of the view.
     * @param {Array} transforms The transformations to apply to the view.
     * @returns {Object} Returns an object containing the `start` and `end`
     *  positions of the view.
     */
    function getView(start, end, transforms) {
      var index = -1,
          length = transforms.length;

      while (++index < length) {
        var data = transforms[index],
            size = data.size;

        switch (data.type) {
          case 'drop':      start += size; break;
          case 'dropRight': end -= size; break;
          case 'take':      end = nativeMin(end, start + size); break;
          case 'takeRight': start = nativeMax(start, end - size); break;
        }
      }
      return { 'start': start, 'end': end };
    }

    /**
     * Extracts wrapper details from the `source` body comment.
     *
     * @private
     * @param {string} source The source to inspect.
     * @returns {Array} Returns the wrapper details.
     */
    function getWrapDetails(source) {
      var match = source.match(reWrapDetails);
      return match ? match[1].split(reSplitDetails) : [];
    }

    /**
     * Checks if `path` exists on `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @param {Function} hasFunc The function to check properties.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     */
    function hasPath(object, path, hasFunc) {
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          result = false;

      while (++index < length) {
        var key = toKey(path[index]);
        if (!(result = object != null && hasFunc(object, key))) {
          break;
        }
        object = object[key];
      }
      if (result || ++index != length) {
        return result;
      }
      length = object == null ? 0 : object.length;
      return !!length && isLength(length) && isIndex(key, length) &&
        (isArray(object) || isArguments(object));
    }

    /**
     * Initializes an array clone.
     *
     * @private
     * @param {Array} array The array to clone.
     * @returns {Array} Returns the initialized clone.
     */
    function initCloneArray(array) {
      var length = array.length,
          result = new array.constructor(length);

      // Add properties assigned by `RegExp#exec`.
      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
        result.index = array.index;
        result.input = array.input;
      }
      return result;
    }

    /**
     * Initializes an object clone.
     *
     * @private
     * @param {Object} object The object to clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneObject(object) {
      return (typeof object.constructor == 'function' && !isPrototype(object))
        ? baseCreate(getPrototype(object))
        : {};
    }

    /**
     * Initializes an object clone based on its `toStringTag`.
     *
     * **Note:** This function only supports cloning values with tags of
     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
     *
     * @private
     * @param {Object} object The object to clone.
     * @param {string} tag The `toStringTag` of the object to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneByTag(object, tag, isDeep) {
      var Ctor = object.constructor;
      switch (tag) {
        case arrayBufferTag:
          return cloneArrayBuffer(object);

        case boolTag:
        case dateTag:
          return new Ctor(+object);

        case dataViewTag:
          return cloneDataView(object, isDeep);

        case float32Tag: case float64Tag:
        case int8Tag: case int16Tag: case int32Tag:
        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
          return cloneTypedArray(object, isDeep);

        case mapTag:
          return new Ctor;

        case numberTag:
        case stringTag:
          return new Ctor(object);

        case regexpTag:
          return cloneRegExp(object);

        case setTag:
          return new Ctor;

        case symbolTag:
          return cloneSymbol(object);
      }
    }

    /**
     * Inserts wrapper `details` in a comment at the top of the `source` body.
     *
     * @private
     * @param {string} source The source to modify.
     * @returns {Array} details The details to insert.
     * @returns {string} Returns the modified source.
     */
    function insertWrapDetails(source, details) {
      var length = details.length;
      if (!length) {
        return source;
      }
      var lastIndex = length - 1;
      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
      details = details.join(length > 2 ? ', ' : ' ');
      return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
    }

    /**
     * Checks if `value` is a flattenable `arguments` object or array.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
     */
    function isFlattenable(value) {
      return isArray(value) || isArguments(value) ||
        !!(spreadableSymbol && value && value[spreadableSymbol]);
    }

    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      var type = typeof value;
      length = length == null ? MAX_SAFE_INTEGER : length;

      return !!length &&
        (type == 'number' ||
          (type != 'symbol' && reIsUint.test(value))) &&
            (value > -1 && value % 1 == 0 && value < length);
    }

    /**
     * Checks if the given arguments are from an iteratee call.
     *
     * @private
     * @param {*} value The potential iteratee value argument.
     * @param {*} index The potential iteratee index or key argument.
     * @param {*} object The potential iteratee object argument.
     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
     *  else `false`.
     */
    function isIterateeCall(value, index, object) {
      if (!isObject(object)) {
        return false;
      }
      var type = typeof index;
      if (type == 'number'
            ? (isArrayLike(object) && isIndex(index, object.length))
            : (type == 'string' && index in object)
          ) {
        return eq(object[index], value);
      }
      return false;
    }

    /**
     * Checks if `value` is a property name and not a property path.
     *
     * @private
     * @param {*} value The value to check.
     * @param {Object} [object] The object to query keys on.
     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
     */
    function isKey(value, object) {
      if (isArray(value)) {
        return false;
      }
      var type = typeof value;
      if (type == 'number' || type == 'symbol' || type == 'boolean' ||
          value == null || isSymbol(value)) {
        return true;
      }
      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
        (object != null && value in Object(object));
    }

    /**
     * Checks if `value` is suitable for use as unique object key.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
     */
    function isKeyable(value) {
      var type = typeof value;
      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
        ? (value !== '__proto__')
        : (value === null);
    }

    /**
     * Checks if `func` has a lazy counterpart.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
     *  else `false`.
     */
    function isLaziable(func) {
      var funcName = getFuncName(func),
          other = lodash[funcName];

      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
        return false;
      }
      if (func === other) {
        return true;
      }
      var data = getData(other);
      return !!data && func === data[0];
    }

    /**
     * Checks if `func` has its source masked.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` is masked, else `false`.
     */
    function isMasked(func) {
      return !!maskSrcKey && (maskSrcKey in func);
    }

    /**
     * Checks if `func` is capable of being masked.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
     */
    var isMaskable = coreJsData ? isFunction : stubFalse;

    /**
     * Checks if `value` is likely a prototype object.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
     */
    function isPrototype(value) {
      var Ctor = value && value.constructor,
          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

      return value === proto;
    }

    /**
     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` if suitable for strict
     *  equality comparisons, else `false`.
     */
    function isStrictComparable(value) {
      return value === value && !isObject(value);
    }

    /**
     * A specialized version of `matchesProperty` for source values suitable
     * for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function matchesStrictComparable(key, srcValue) {
      return function(object) {
        if (object == null) {
          return false;
        }
        return object[key] === srcValue &&
          (srcValue !== undefined || (key in Object(object)));
      };
    }

    /**
     * A specialized version of `_.memoize` which clears the memoized function's
     * cache when it exceeds `MAX_MEMOIZE_SIZE`.
     *
     * @private
     * @param {Function} func The function to have its output memoized.
     * @returns {Function} Returns the new memoized function.
     */
    function memoizeCapped(func) {
      var result = memoize(func, function(key) {
        if (cache.size === MAX_MEMOIZE_SIZE) {
          cache.clear();
        }
        return key;
      });

      var cache = result.cache;
      return result;
    }

    /**
     * Merges the function metadata of `source` into `data`.
     *
     * Merging metadata reduces the number of wrappers used to invoke a function.
     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
     * may be applied regardless of execution order. Methods like `_.ary` and
     * `_.rearg` modify function arguments, making the order in which they are
     * executed important, preventing the merging of metadata. However, we make
     * an exception for a safe combined case where curried functions have `_.ary`
     * and or `_.rearg` applied.
     *
     * @private
     * @param {Array} data The destination metadata.
     * @param {Array} source The source metadata.
     * @returns {Array} Returns `data`.
     */
    function mergeData(data, source) {
      var bitmask = data[1],
          srcBitmask = source[1],
          newBitmask = bitmask | srcBitmask,
          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);

      var isCombo =
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));

      // Exit early if metadata can't be merged.
      if (!(isCommon || isCombo)) {
        return data;
      }
      // Use source `thisArg` if available.
      if (srcBitmask & WRAP_BIND_FLAG) {
        data[2] = source[2];
        // Set when currying a bound function.
        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
      }
      // Compose partial arguments.
      var value = source[3];
      if (value) {
        var partials = data[3];
        data[3] = partials ? composeArgs(partials, value, source[4]) : value;
        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
      }
      // Compose partial right arguments.
      value = source[5];
      if (value) {
        partials = data[5];
        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
      }
      // Use source `argPos` if available.
      value = source[7];
      if (value) {
        data[7] = value;
      }
      // Use source `ary` if it's smaller.
      if (srcBitmask & WRAP_ARY_FLAG) {
        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
      }
      // Use source `arity` if one is not provided.
      if (data[9] == null) {
        data[9] = source[9];
      }
      // Use source `func` and merge bitmasks.
      data[0] = source[0];
      data[1] = newBitmask;

      return data;
    }

    /**
     * This function is like
     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * except that it includes inherited enumerable properties.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function nativeKeysIn(object) {
      var result = [];
      if (object != null) {
        for (var key in Object(object)) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * Converts `value` to a string using `Object.prototype.toString`.
     *
     * @private
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     */
    function objectToString(value) {
      return nativeObjectToString.call(value);
    }

    /**
     * A specialized version of `baseRest` which transforms the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @param {Function} transform The rest array transform.
     * @returns {Function} Returns the new function.
     */
    function overRest(func, start, transform) {
      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
      return function() {
        var args = arguments,
            index = -1,
            length = nativeMax(args.length - start, 0),
            array = Array(length);

        while (++index < length) {
          array[index] = args[start + index];
        }
        index = -1;
        var otherArgs = Array(start + 1);
        while (++index < start) {
          otherArgs[index] = args[index];
        }
        otherArgs[start] = transform(array);
        return apply(func, this, otherArgs);
      };
    }

    /**
     * Gets the parent value at `path` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} path The path to get the parent value of.
     * @returns {*} Returns the parent value.
     */
    function parent(object, path) {
      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
    }

    /**
     * Reorder `array` according to the specified indexes where the element at
     * the first index is assigned as the first element, the element at
     * the second index is assigned as the second element, and so on.
     *
     * @private
     * @param {Array} array The array to reorder.
     * @param {Array} indexes The arranged array indexes.
     * @returns {Array} Returns `array`.
     */
    function reorder(array, indexes) {
      var arrLength = array.length,
          length = nativeMin(indexes.length, arrLength),
          oldArray = copyArray(array);

      while (length--) {
        var index = indexes[length];
        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
      }
      return array;
    }

    /**
     * Gets the value at `key`, unless `key` is "__proto__".
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the property to get.
     * @returns {*} Returns the property value.
     */
    function safeGet(object, key) {
      if (key == '__proto__') {
        return;
      }

      return object[key];
    }

    /**
     * Sets metadata for `func`.
     *
     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
     * period of time, it will trip its breaker and transition to an identity
     * function to avoid garbage collection pauses in V8. See
     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
     * for more details.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var setData = shortOut(baseSetData);

    /**
     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    var setTimeout = ctxSetTimeout || function(func, wait) {
      return root.setTimeout(func, wait);
    };

    /**
     * Sets the `toString` method of `func` to return `string`.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var setToString = shortOut(baseSetToString);

    /**
     * Sets the `toString` method of `wrapper` to mimic the source of `reference`
     * with wrapper details in a comment at the top of the source body.
     *
     * @private
     * @param {Function} wrapper The function to modify.
     * @param {Function} reference The reference function.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Function} Returns `wrapper`.
     */
    function setWrapToString(wrapper, reference, bitmask) {
      var source = (reference + '');
      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
    }

    /**
     * Creates a function that'll short out and invoke `identity` instead
     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
     * milliseconds.
     *
     * @private
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new shortable function.
     */
    function shortOut(func) {
      var count = 0,
          lastCalled = 0;

      return function() {
        var stamp = nativeNow(),
            remaining = HOT_SPAN - (stamp - lastCalled);

        lastCalled = stamp;
        if (remaining > 0) {
          if (++count >= HOT_COUNT) {
            return arguments[0];
          }
        } else {
          count = 0;
        }
        return func.apply(undefined, arguments);
      };
    }

    /**
     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @param {number} [size=array.length] The size of `array`.
     * @returns {Array} Returns `array`.
     */
    function shuffleSelf(array, size) {
      var index = -1,
          length = array.length,
          lastIndex = length - 1;

      size = size === undefined ? length : size;
      while (++index < size) {
        var rand = baseRandom(index, lastIndex),
            value = array[rand];

        array[rand] = array[index];
        array[index] = value;
      }
      array.length = size;
      return array;
    }

    /**
     * Converts `string` to a property path array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the property path array.
     */
    var stringToPath = memoizeCapped(function(string) {
      var result = [];
      if (string.charCodeAt(0) === 46 /* . */) {
        result.push('');
      }
      string.replace(rePropName, function(match, number, quote, subString) {
        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
      });
      return result;
    });

    /**
     * Converts `value` to a string key if it's not a string or symbol.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {string|symbol} Returns the key.
     */
    function toKey(value) {
      if (typeof value == 'string' || isSymbol(value)) {
        return value;
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * Converts `func` to its source code.
     *
     * @private
     * @param {Function} func The function to convert.
     * @returns {string} Returns the source code.
     */
    function toSource(func) {
      if (func != null) {
        try {
          return funcToString.call(func);
        } catch (e) {}
        try {
          return (func + '');
        } catch (e) {}
      }
      return '';
    }

    /**
     * Updates wrapper `details` based on `bitmask` flags.
     *
     * @private
     * @returns {Array} details The details to modify.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Array} Returns `details`.
     */
    function updateWrapDetails(details, bitmask) {
      arrayEach(wrapFlags, function(pair) {
        var value = '_.' + pair[0];
        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
          details.push(value);
        }
      });
      return details.sort();
    }

    /**
     * Creates a clone of `wrapper`.
     *
     * @private
     * @param {Object} wrapper The wrapper to clone.
     * @returns {Object} Returns the cloned wrapper.
     */
    function wrapperClone(wrapper) {
      if (wrapper instanceof LazyWrapper) {
        return wrapper.clone();
      }
      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
      result.__actions__ = copyArray(wrapper.__actions__);
      result.__index__  = wrapper.__index__;
      result.__values__ = wrapper.__values__;
      return result;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of elements split into groups the length of `size`.
     * If `array` can't be split evenly, the final chunk will be the remaining
     * elements.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to process.
     * @param {number} [size=1] The length of each chunk
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the new array of chunks.
     * @example
     *
     * _.chunk(['a', 'b', 'c', 'd'], 2);
     * // => [['a', 'b'], ['c', 'd']]
     *
     * _.chunk(['a', 'b', 'c', 'd'], 3);
     * // => [['a', 'b', 'c'], ['d']]
     */
    function chunk(array, size, guard) {
      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
        size = 1;
      } else {
        size = nativeMax(toInteger(size), 0);
      }
      var length = array == null ? 0 : array.length;
      if (!length || size < 1) {
        return [];
      }
      var index = 0,
          resIndex = 0,
          result = Array(nativeCeil(length / size));

      while (index < length) {
        result[resIndex++] = baseSlice(array, index, (index += size));
      }
      return result;
    }

    /**
     * Creates an array with all falsey values removed. The values `false`, `null`,
     * `0`, `""`, `undefined`, and `NaN` are falsey.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to compact.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.compact([0, 1, false, 2, '', 3]);
     * // => [1, 2, 3]
     */
    function compact(array) {
      var index = -1,
          length = array == null ? 0 : array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (value) {
          result[resIndex++] = value;
        }
      }
      return result;
    }

    /**
     * Creates a new array concatenating `array` with any additional arrays
     * and/or values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to concatenate.
     * @param {...*} [values] The values to concatenate.
     * @returns {Array} Returns the new concatenated array.
     * @example
     *
     * var array = [1];
     * var other = _.concat(array, 2, [3], [[4]]);
     *
     * console.log(other);
     * // => [1, 2, 3, [4]]
     *
     * console.log(array);
     * // => [1]
     */
    function concat() {
      var length = arguments.length;
      if (!length) {
        return [];
      }
      var args = Array(length - 1),
          array = arguments[0],
          index = length;

      while (index--) {
        args[index - 1] = arguments[index];
      }
      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
    }

    /**
     * Creates an array of `array` values not included in the other given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * **Note:** Unlike `_.pullAll`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.without, _.xor
     * @example
     *
     * _.difference([2, 1], [2, 3]);
     * // => [1]
     */
    var difference = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `iteratee` which
     * is invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var differenceBy = baseRest(function(array, values) {
      var iteratee = last(values);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `comparator`
     * which is invoked to compare elements of `array` to `values`. The order and
     * references of result values are determined by the first array. The comparator
     * is invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     *
     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }]
     */
    var differenceWith = baseRest(function(array, values) {
      var comparator = last(values);
      if (isArrayLikeObject(comparator)) {
        comparator = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
        : [];
    });

    /**
     * Creates a slice of `array` with `n` elements dropped from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.drop([1, 2, 3]);
     * // => [2, 3]
     *
     * _.drop([1, 2, 3], 2);
     * // => [3]
     *
     * _.drop([1, 2, 3], 5);
     * // => []
     *
     * _.drop([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function drop(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with `n` elements dropped from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropRight([1, 2, 3]);
     * // => [1, 2]
     *
     * _.dropRight([1, 2, 3], 2);
     * // => [1]
     *
     * _.dropRight([1, 2, 3], 5);
     * // => []
     *
     * _.dropRight([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function dropRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the end.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.dropRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropRightWhile(users, ['active', false]);
     * // => objects for ['barney']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropRightWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true, true)
        : [];
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the beginning.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.dropWhile(users, function(o) { return !o.active; });
     * // => objects for ['pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropWhile(users, ['active', false]);
     * // => objects for ['pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true)
        : [];
    }

    /**
     * Fills elements of `array` with `value` from `start` up to, but not
     * including, `end`.
     *
     * **Note:** This method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Array
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.fill(array, 'a');
     * console.log(array);
     * // => ['a', 'a', 'a']
     *
     * _.fill(Array(3), 2);
     * // => [2, 2, 2]
     *
     * _.fill([4, 6, 8, 10], '*', 1, 3);
     * // => [4, '*', '*', 10]
     */
    function fill(array, value, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
        start = 0;
        end = length;
      }
      return baseFill(array, value, start, end);
    }

    /**
     * This method is like `_.find` except that it returns the index of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.findIndex(users, function(o) { return o.user == 'barney'; });
     * // => 0
     *
     * // The `_.matches` iteratee shorthand.
     * _.findIndex(users, { 'user': 'fred', 'active': false });
     * // => 1
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findIndex(users, ['active', false]);
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.findIndex(users, 'active');
     * // => 2
     */
    function findIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index);
    }

    /**
     * This method is like `_.findIndex` except that it iterates over elements
     * of `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
     * // => 2
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastIndex(users, { 'user': 'barney', 'active': true });
     * // => 0
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastIndex(users, ['active', false]);
     * // => 2
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastIndex(users, 'active');
     * // => 0
     */
    function findLastIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length - 1;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = fromIndex < 0
          ? nativeMax(length + index, 0)
          : nativeMin(index, length - 1);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index, true);
    }

    /**
     * Flattens `array` a single level deep.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flatten([1, [2, [3, [4]], 5]]);
     * // => [1, 2, [3, [4]], 5]
     */
    function flatten(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, 1) : [];
    }

    /**
     * Recursively flattens `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flattenDeep([1, [2, [3, [4]], 5]]);
     * // => [1, 2, 3, 4, 5]
     */
    function flattenDeep(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, INFINITY) : [];
    }

    /**
     * Recursively flatten `array` up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * var array = [1, [2, [3, [4]], 5]];
     *
     * _.flattenDepth(array, 1);
     * // => [1, 2, [3, [4]], 5]
     *
     * _.flattenDepth(array, 2);
     * // => [1, 2, 3, [4], 5]
     */
    function flattenDepth(array, depth) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(array, depth);
    }

    /**
     * The inverse of `_.toPairs`; this method returns an object composed
     * from key-value `pairs`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} pairs The key-value pairs.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.fromPairs([['a', 1], ['b', 2]]);
     * // => { 'a': 1, 'b': 2 }
     */
    function fromPairs(pairs) {
      var index = -1,
          length = pairs == null ? 0 : pairs.length,
          result = {};

      while (++index < length) {
        var pair = pairs[index];
        result[pair[0]] = pair[1];
      }
      return result;
    }

    /**
     * Gets the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias first
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the first element of `array`.
     * @example
     *
     * _.head([1, 2, 3]);
     * // => 1
     *
     * _.head([]);
     * // => undefined
     */
    function head(array) {
      return (array && array.length) ? array[0] : undefined;
    }

    /**
     * Gets the index at which the first occurrence of `value` is found in `array`
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. If `fromIndex` is negative, it's used as the
     * offset from the end of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.indexOf([1, 2, 1, 2], 2);
     * // => 1
     *
     * // Search from the `fromIndex`.
     * _.indexOf([1, 2, 1, 2], 2, 2);
     * // => 3
     */
    function indexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseIndexOf(array, value, index);
    }

    /**
     * Gets all but the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.initial([1, 2, 3]);
     * // => [1, 2]
     */
    function initial(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 0, -1) : [];
    }

    /**
     * Creates an array of unique values that are included in all given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersection([2, 1], [2, 3]);
     * // => [2]
     */
    var intersection = baseRest(function(arrays) {
      var mapped = arrayMap(arrays, castArrayLikeObject);
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped)
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `iteratee`
     * which is invoked for each element of each `arrays` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [2.1]
     *
     * // The `_.property` iteratee shorthand.
     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }]
     */
    var intersectionBy = baseRest(function(arrays) {
      var iteratee = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      if (iteratee === last(mapped)) {
        iteratee = undefined;
      } else {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `comparator`
     * which is invoked to compare elements of `arrays`. The order and references
     * of result values are determined by the first array. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.intersectionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }]
     */
    var intersectionWith = baseRest(function(arrays) {
      var comparator = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      comparator = typeof comparator == 'function' ? comparator : undefined;
      if (comparator) {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, undefined, comparator)
        : [];
    });

    /**
     * Converts all elements in `array` into a string separated by `separator`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to convert.
     * @param {string} [separator=','] The element separator.
     * @returns {string} Returns the joined string.
     * @example
     *
     * _.join(['a', 'b', 'c'], '~');
     * // => 'a~b~c'
     */
    function join(array, separator) {
      return array == null ? '' : nativeJoin.call(array, separator);
    }

    /**
     * Gets the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the last element of `array`.
     * @example
     *
     * _.last([1, 2, 3]);
     * // => 3
     */
    function last(array) {
      var length = array == null ? 0 : array.length;
      return length ? array[length - 1] : undefined;
    }

    /**
     * This method is like `_.indexOf` except that it iterates over elements of
     * `array` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.lastIndexOf([1, 2, 1, 2], 2);
     * // => 3
     *
     * // Search from the `fromIndex`.
     * _.lastIndexOf([1, 2, 1, 2], 2, 2);
     * // => 1
     */
    function lastIndexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
      }
      return value === value
        ? strictLastIndexOf(array, value, index)
        : baseFindIndex(array, baseIsNaN, index, true);
    }

    /**
     * Gets the element at index `n` of `array`. If `n` is negative, the nth
     * element from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.11.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=0] The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     *
     * _.nth(array, 1);
     * // => 'b'
     *
     * _.nth(array, -2);
     * // => 'c';
     */
    function nth(array, n) {
      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
    }

    /**
     * Removes all given values from `array` using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
     * to remove elements from an array by predicate.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...*} [values] The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pull(array, 'a', 'c');
     * console.log(array);
     * // => ['b', 'b']
     */
    var pull = baseRest(pullAll);

    /**
     * This method is like `_.pull` except that it accepts an array of values to remove.
     *
     * **Note:** Unlike `_.difference`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pullAll(array, ['a', 'c']);
     * console.log(array);
     * // => ['b', 'b']
     */
    function pullAll(array, values) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values)
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `iteratee` which is
     * invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The iteratee is invoked with one argument: (value).
     *
     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
     *
     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
     * console.log(array);
     * // => [{ 'x': 2 }]
     */
    function pullAllBy(array, values, iteratee) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, getIteratee(iteratee, 2))
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `comparator` which
     * is invoked to compare elements of `array` to `values`. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
     *
     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
     * console.log(array);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
     */
    function pullAllWith(array, values, comparator) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, undefined, comparator)
        : array;
    }

    /**
     * Removes elements from `array` corresponding to `indexes` and returns an
     * array of removed elements.
     *
     * **Note:** Unlike `_.at`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...(number|number[])} [indexes] The indexes of elements to remove.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     * var pulled = _.pullAt(array, [1, 3]);
     *
     * console.log(array);
     * // => ['a', 'c']
     *
     * console.log(pulled);
     * // => ['b', 'd']
     */
    var pullAt = flatRest(function(array, indexes) {
      var length = array == null ? 0 : array.length,
          result = baseAt(array, indexes);

      basePullAt(array, arrayMap(indexes, function(index) {
        return isIndex(index, length) ? +index : index;
      }).sort(compareAscending));

      return result;
    });

    /**
     * Removes all elements from `array` that `predicate` returns truthy for
     * and returns an array of the removed elements. The predicate is invoked
     * with three arguments: (value, index, array).
     *
     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
     * to pull elements from an array by value.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = [1, 2, 3, 4];
     * var evens = _.remove(array, function(n) {
     *   return n % 2 == 0;
     * });
     *
     * console.log(array);
     * // => [1, 3]
     *
     * console.log(evens);
     * // => [2, 4]
     */
    function remove(array, predicate) {
      var result = [];
      if (!(array && array.length)) {
        return result;
      }
      var index = -1,
          indexes = [],
          length = array.length;

      predicate = getIteratee(predicate, 3);
      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result.push(value);
          indexes.push(index);
        }
      }
      basePullAt(array, indexes);
      return result;
    }

    /**
     * Reverses `array` so that the first element becomes the last, the second
     * element becomes the second to last, and so on.
     *
     * **Note:** This method mutates `array` and is based on
     * [`Array#reverse`](https://mdn.io/Array/reverse).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.reverse(array);
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function reverse(array) {
      return array == null ? array : nativeReverse.call(array);
    }

    /**
     * Creates a slice of `array` from `start` up to, but not including, `end`.
     *
     * **Note:** This method is used instead of
     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
     * returned.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function slice(array, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
        start = 0;
        end = length;
      }
      else {
        start = start == null ? 0 : toInteger(start);
        end = end === undefined ? length : toInteger(end);
      }
      return baseSlice(array, start, end);
    }

    /**
     * Uses a binary search to determine the lowest index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedIndex([30, 50], 40);
     * // => 1
     */
    function sortedIndex(array, value) {
      return baseSortedIndex(array, value);
    }

    /**
     * This method is like `_.sortedIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
     * // => 0
     */
    function sortedIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
    }

    /**
     * This method is like `_.indexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
     * // => 1
     */
    function sortedIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value);
        if (index < length && eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.sortedIndex` except that it returns the highest
     * index at which `value` should be inserted into `array` in order to
     * maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
     * // => 4
     */
    function sortedLastIndex(array, value) {
      return baseSortedIndex(array, value, true);
    }

    /**
     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 1
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
     * // => 1
     */
    function sortedLastIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
    }

    /**
     * This method is like `_.lastIndexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
     * // => 3
     */
    function sortedLastIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value, true) - 1;
        if (eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.uniq` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniq([1, 1, 2]);
     * // => [1, 2]
     */
    function sortedUniq(array) {
      return (array && array.length)
        ? baseSortedUniq(array)
        : [];
    }

    /**
     * This method is like `_.uniqBy` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
     * // => [1.1, 2.3]
     */
    function sortedUniqBy(array, iteratee) {
      return (array && array.length)
        ? baseSortedUniq(array, getIteratee(iteratee, 2))
        : [];
    }

    /**
     * Gets all but the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.tail([1, 2, 3]);
     * // => [2, 3]
     */
    function tail(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 1, length) : [];
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.take([1, 2, 3]);
     * // => [1]
     *
     * _.take([1, 2, 3], 2);
     * // => [1, 2]
     *
     * _.take([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.take([1, 2, 3], 0);
     * // => []
     */
    function take(array, n, guard) {
      if (!(array && array.length)) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeRight([1, 2, 3]);
     * // => [3]
     *
     * _.takeRight([1, 2, 3], 2);
     * // => [2, 3]
     *
     * _.takeRight([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.takeRight([1, 2, 3], 0);
     * // => []
     */
    function takeRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with elements taken from the end. Elements are
     * taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.takeRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeRightWhile(users, ['active', false]);
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeRightWhile(users, 'active');
     * // => []
     */
    function takeRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), false, true)
        : [];
    }

    /**
     * Creates a slice of `array` with elements taken from the beginning. Elements
     * are taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.takeWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeWhile(users, ['active', false]);
     * // => objects for ['barney', 'fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeWhile(users, 'active');
     * // => []
     */
    function takeWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3))
        : [];
    }

    /**
     * Creates an array of unique values, in order, from all given arrays using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.union([2], [1, 2]);
     * // => [2, 1]
     */
    var union = baseRest(function(arrays) {
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
    });

    /**
     * This method is like `_.union` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which uniqueness is computed. Result values are chosen from the first
     * array in which the value occurs. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.unionBy([2.1], [1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    var unionBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.union` except that it accepts `comparator` which
     * is invoked to compare elements of `arrays`. Result values are chosen from
     * the first array in which the value occurs. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.unionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var unionWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
    });

    /**
     * Creates a duplicate-free version of an array, using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons, in which only the first occurrence of each element
     * is kept. The order of result values is determined by the order they occur
     * in the array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniq([2, 1, 2]);
     * // => [2, 1]
     */
    function uniq(array) {
      return (array && array.length) ? baseUniq(array) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * uniqueness is computed. The order of result values is determined by the
     * order they occur in the array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    function uniqBy(array, iteratee) {
      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `comparator` which
     * is invoked to compare elements of `array`. The order of result values is
     * determined by the order they occur in the array.The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.uniqWith(objects, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
     */
    function uniqWith(array, comparator) {
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
    }

    /**
     * This method is like `_.zip` except that it accepts an array of grouped
     * elements and creates an array regrouping the elements to their pre-zip
     * configuration.
     *
     * @static
     * @memberOf _
     * @since 1.2.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     *
     * _.unzip(zipped);
     * // => [['a', 'b'], [1, 2], [true, false]]
     */
    function unzip(array) {
      if (!(array && array.length)) {
        return [];
      }
      var length = 0;
      array = arrayFilter(array, function(group) {
        if (isArrayLikeObject(group)) {
          length = nativeMax(group.length, length);
          return true;
        }
      });
      return baseTimes(length, function(index) {
        return arrayMap(array, baseProperty(index));
      });
    }

    /**
     * This method is like `_.unzip` except that it accepts `iteratee` to specify
     * how regrouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  regrouped values.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
     * // => [[1, 10, 100], [2, 20, 200]]
     *
     * _.unzipWith(zipped, _.add);
     * // => [3, 30, 300]
     */
    function unzipWith(array, iteratee) {
      if (!(array && array.length)) {
        return [];
      }
      var result = unzip(array);
      if (iteratee == null) {
        return result;
      }
      return arrayMap(result, function(group) {
        return apply(iteratee, undefined, group);
      });
    }

    /**
     * Creates an array excluding all given values using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.pull`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...*} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.xor
     * @example
     *
     * _.without([2, 1, 2, 3], 1, 2);
     * // => [3]
     */
    var without = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, values)
        : [];
    });

    /**
     * Creates an array of unique values that is the
     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
     * of the given arrays. The order of result values is determined by the order
     * they occur in the arrays.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.without
     * @example
     *
     * _.xor([2, 1], [2, 3]);
     * // => [1, 3]
     */
    var xor = baseRest(function(arrays) {
      return baseXor(arrayFilter(arrays, isArrayLikeObject));
    });

    /**
     * This method is like `_.xor` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which by which they're compared. The order of result values is determined
     * by the order they occur in the arrays. The iteratee is invoked with one
     * argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2, 3.4]
     *
     * // The `_.property` iteratee shorthand.
     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var xorBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.xor` except that it accepts `comparator` which is
     * invoked to compare elements of `arrays`. The order of result values is
     * determined by the order they occur in the arrays. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.xorWith(objects, others, _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var xorWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
    });

    /**
     * Creates an array of grouped elements, the first of which contains the
     * first elements of the given arrays, the second of which contains the
     * second elements of the given arrays, and so on.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     */
    var zip = baseRest(unzip);

    /**
     * This method is like `_.fromPairs` except that it accepts two arrays,
     * one of property identifiers and one of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 0.4.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObject(['a', 'b'], [1, 2]);
     * // => { 'a': 1, 'b': 2 }
     */
    function zipObject(props, values) {
      return baseZipObject(props || [], values || [], assignValue);
    }

    /**
     * This method is like `_.zipObject` except that it supports property paths.
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
     */
    function zipObjectDeep(props, values) {
      return baseZipObject(props || [], values || [], baseSet);
    }

    /**
     * This method is like `_.zip` except that it accepts `iteratee` to specify
     * how grouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  grouped values.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
     *   return a + b + c;
     * });
     * // => [111, 222]
     */
    var zipWith = baseRest(function(arrays) {
      var length = arrays.length,
          iteratee = length > 1 ? arrays[length - 1] : undefined;

      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
      return unzipWith(arrays, iteratee);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` wrapper instance that wraps `value` with explicit method
     * chain sequences enabled. The result of such sequences must be unwrapped
     * with `_#value`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Seq
     * @param {*} value The value to wrap.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36 },
     *   { 'user': 'fred',    'age': 40 },
     *   { 'user': 'pebbles', 'age': 1 }
     * ];
     *
     * var youngest = _
     *   .chain(users)
     *   .sortBy('age')
     *   .map(function(o) {
     *     return o.user + ' is ' + o.age;
     *   })
     *   .head()
     *   .value();
     * // => 'pebbles is 1'
     */
    function chain(value) {
      var result = lodash(value);
      result.__chain__ = true;
      return result;
    }

    /**
     * This method invokes `interceptor` and returns `value`. The interceptor
     * is invoked with one argument; (value). The purpose of this method is to
     * "tap into" a method chain sequence in order to modify intermediate results.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns `value`.
     * @example
     *
     * _([1, 2, 3])
     *  .tap(function(array) {
     *    // Mutate input array.
     *    array.pop();
     *  })
     *  .reverse()
     *  .value();
     * // => [2, 1]
     */
    function tap(value, interceptor) {
      interceptor(value);
      return value;
    }

    /**
     * This method is like `_.tap` except that it returns the result of `interceptor`.
     * The purpose of this method is to "pass thru" values replacing intermediate
     * results in a method chain sequence.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns the result of `interceptor`.
     * @example
     *
     * _('  abc  ')
     *  .chain()
     *  .trim()
     *  .thru(function(value) {
     *    return [value];
     *  })
     *  .value();
     * // => ['abc']
     */
    function thru(value, interceptor) {
      return interceptor(value);
    }

    /**
     * This method is the wrapper version of `_.at`.
     *
     * @name at
     * @memberOf _
     * @since 1.0.0
     * @category Seq
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _(object).at(['a[0].b.c', 'a[1]']).value();
     * // => [3, 4]
     */
    var wrapperAt = flatRest(function(paths) {
      var length = paths.length,
          start = length ? paths[0] : 0,
          value = this.__wrapped__,
          interceptor = function(object) { return baseAt(object, paths); };

      if (length > 1 || this.__actions__.length ||
          !(value instanceof LazyWrapper) || !isIndex(start)) {
        return this.thru(interceptor);
      }
      value = value.slice(start, +start + (length ? 1 : 0));
      value.__actions__.push({
        'func': thru,
        'args': [interceptor],
        'thisArg': undefined
      });
      return new LodashWrapper(value, this.__chain__).thru(function(array) {
        if (length && !array.length) {
          array.push(undefined);
        }
        return array;
      });
    });

    /**
     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
     *
     * @name chain
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * // A sequence without explicit chaining.
     * _(users).head();
     * // => { 'user': 'barney', 'age': 36 }
     *
     * // A sequence with explicit chaining.
     * _(users)
     *   .chain()
     *   .head()
     *   .pick('user')
     *   .value();
     * // => { 'user': 'barney' }
     */
    function wrapperChain() {
      return chain(this);
    }

    /**
     * Executes the chain sequence and returns the wrapped result.
     *
     * @name commit
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2];
     * var wrapped = _(array).push(3);
     *
     * console.log(array);
     * // => [1, 2]
     *
     * wrapped = wrapped.commit();
     * console.log(array);
     * // => [1, 2, 3]
     *
     * wrapped.last();
     * // => 3
     *
     * console.log(array);
     * // => [1, 2, 3]
     */
    function wrapperCommit() {
      return new LodashWrapper(this.value(), this.__chain__);
    }

    /**
     * Gets the next value on a wrapped object following the
     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
     *
     * @name next
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the next iterator value.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 1 }
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 2 }
     *
     * wrapped.next();
     * // => { 'done': true, 'value': undefined }
     */
    function wrapperNext() {
      if (this.__values__ === undefined) {
        this.__values__ = toArray(this.value());
      }
      var done = this.__index__ >= this.__values__.length,
          value = done ? undefined : this.__values__[this.__index__++];

      return { 'done': done, 'value': value };
    }

    /**
     * Enables the wrapper to be iterable.
     *
     * @name Symbol.iterator
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the wrapper object.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped[Symbol.iterator]() === wrapped;
     * // => true
     *
     * Array.from(wrapped);
     * // => [1, 2]
     */
    function wrapperToIterator() {
      return this;
    }

    /**
     * Creates a clone of the chain sequence planting `value` as the wrapped value.
     *
     * @name plant
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @param {*} value The value to plant.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2]).map(square);
     * var other = wrapped.plant([3, 4]);
     *
     * other.value();
     * // => [9, 16]
     *
     * wrapped.value();
     * // => [1, 4]
     */
    function wrapperPlant(value) {
      var result,
          parent = this;

      while (parent instanceof baseLodash) {
        var clone = wrapperClone(parent);
        clone.__index__ = 0;
        clone.__values__ = undefined;
        if (result) {
          previous.__wrapped__ = clone;
        } else {
          result = clone;
        }
        var previous = clone;
        parent = parent.__wrapped__;
      }
      previous.__wrapped__ = value;
      return result;
    }

    /**
     * This method is the wrapper version of `_.reverse`.
     *
     * **Note:** This method mutates the wrapped array.
     *
     * @name reverse
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _(array).reverse().value()
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function wrapperReverse() {
      var value = this.__wrapped__;
      if (value instanceof LazyWrapper) {
        var wrapped = value;
        if (this.__actions__.length) {
          wrapped = new LazyWrapper(this);
        }
        wrapped = wrapped.reverse();
        wrapped.__actions__.push({
          'func': thru,
          'args': [reverse],
          'thisArg': undefined
        });
        return new LodashWrapper(wrapped, this.__chain__);
      }
      return this.thru(reverse);
    }

    /**
     * Executes the chain sequence to resolve the unwrapped value.
     *
     * @name value
     * @memberOf _
     * @since 0.1.0
     * @alias toJSON, valueOf
     * @category Seq
     * @returns {*} Returns the resolved unwrapped value.
     * @example
     *
     * _([1, 2, 3]).value();
     * // => [1, 2, 3]
     */
    function wrapperValue() {
      return baseWrapperValue(this.__wrapped__, this.__actions__);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the number of times the key was returned by `iteratee`. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.countBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': 1, '6': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.countBy(['one', 'two', 'three'], 'length');
     * // => { '3': 2, '5': 1 }
     */
    var countBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        ++result[key];
      } else {
        baseAssignValue(result, key, 1);
      }
    });

    /**
     * Checks if `predicate` returns truthy for **all** elements of `collection`.
     * Iteration is stopped once `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * **Note:** This method returns `true` for
     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
     * elements of empty collections.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     * @example
     *
     * _.every([true, 1, null, 'yes'], Boolean);
     * // => false
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.every(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.every(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.every(users, 'active');
     * // => false
     */
    function every(collection, predicate, guard) {
      var func = isArray(collection) ? arrayEvery : baseEvery;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning an array of all elements
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * **Note:** Unlike `_.remove`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.reject
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * _.filter(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, { 'age': 36, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.filter(users, 'active');
     * // => objects for ['barney']
     */
    function filter(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning the first element
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * _.find(users, function(o) { return o.age < 40; });
     * // => object for 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.find(users, { 'age': 1, 'active': true });
     * // => object for 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.find(users, ['active', false]);
     * // => object for 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.find(users, 'active');
     * // => object for 'barney'
     */
    var find = createFind(findIndex);

    /**
     * This method is like `_.find` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=collection.length-1] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * _.findLast([1, 2, 3, 4], function(n) {
     *   return n % 2 == 1;
     * });
     * // => 3
     */
    var findLast = createFind(findLastIndex);

    /**
     * Creates a flattened array of values by running each element in `collection`
     * thru `iteratee` and flattening the mapped results. The iteratee is invoked
     * with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [n, n];
     * }
     *
     * _.flatMap([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMap(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), 1);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDeep([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMapDeep(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), INFINITY);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDepth([1, 2], duplicate, 2);
     * // => [[1, 1], [2, 2]]
     */
    function flatMapDepth(collection, iteratee, depth) {
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(map(collection, iteratee), depth);
    }

    /**
     * Iterates over elements of `collection` and invokes `iteratee` for each element.
     * The iteratee is invoked with three arguments: (value, index|key, collection).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * **Note:** As with other "Collections" methods, objects with a "length"
     * property are iterated like arrays. To avoid this behavior use `_.forIn`
     * or `_.forOwn` for object iteration.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias each
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEachRight
     * @example
     *
     * _.forEach([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `1` then `2`.
     *
     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forEach(collection, iteratee) {
      var func = isArray(collection) ? arrayEach : baseEach;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forEach` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @alias eachRight
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEach
     * @example
     *
     * _.forEachRight([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `2` then `1`.
     */
    function forEachRight(collection, iteratee) {
      var func = isArray(collection) ? arrayEachRight : baseEachRight;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The order of grouped values
     * is determined by the order they occur in `collection`. The corresponding
     * value of each key is an array of elements responsible for generating the
     * key. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.groupBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': [4.2], '6': [6.1, 6.3] }
     *
     * // The `_.property` iteratee shorthand.
     * _.groupBy(['one', 'two', 'three'], 'length');
     * // => { '3': ['one', 'two'], '5': ['three'] }
     */
    var groupBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        result[key].push(value);
      } else {
        baseAssignValue(result, key, [value]);
      }
    });

    /**
     * Checks if `value` is in `collection`. If `collection` is a string, it's
     * checked for a substring of `value`, otherwise
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * is used for equality comparisons. If `fromIndex` is negative, it's used as
     * the offset from the end of `collection`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {boolean} Returns `true` if `value` is found, else `false`.
     * @example
     *
     * _.includes([1, 2, 3], 1);
     * // => true
     *
     * _.includes([1, 2, 3], 1, 2);
     * // => false
     *
     * _.includes({ 'a': 1, 'b': 2 }, 1);
     * // => true
     *
     * _.includes('abcd', 'bc');
     * // => true
     */
    function includes(collection, value, fromIndex, guard) {
      collection = isArrayLike(collection) ? collection : values(collection);
      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;

      var length = collection.length;
      if (fromIndex < 0) {
        fromIndex = nativeMax(length + fromIndex, 0);
      }
      return isString(collection)
        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
    }

    /**
     * Invokes the method at `path` of each element in `collection`, returning
     * an array of the results of each invoked method. Any additional arguments
     * are provided to each invoked method. If `path` is a function, it's invoked
     * for, and `this` bound to, each element in `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array|Function|string} path The path of the method to invoke or
     *  the function invoked per iteration.
     * @param {...*} [args] The arguments to invoke each method with.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
     * // => [[1, 5, 7], [1, 2, 3]]
     *
     * _.invokeMap([123, 456], String.prototype.split, '');
     * // => [['1', '2', '3'], ['4', '5', '6']]
     */
    var invokeMap = baseRest(function(collection, path, args) {
      var index = -1,
          isFunc = typeof path == 'function',
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value) {
        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
      });
      return result;
    });

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the last element responsible for generating the key. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * var array = [
     *   { 'dir': 'left', 'code': 97 },
     *   { 'dir': 'right', 'code': 100 }
     * ];
     *
     * _.keyBy(array, function(o) {
     *   return String.fromCharCode(o.code);
     * });
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     *
     * _.keyBy(array, 'dir');
     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
     */
    var keyBy = createAggregator(function(result, value, key) {
      baseAssignValue(result, key, value);
    });

    /**
     * Creates an array of values by running each element in `collection` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
     *
     * The guarded methods are:
     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * _.map([4, 8], square);
     * // => [16, 64]
     *
     * _.map({ 'a': 4, 'b': 8 }, square);
     * // => [16, 64] (iteration order is not guaranteed)
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, 'user');
     * // => ['barney', 'fred']
     */
    function map(collection, iteratee) {
      var func = isArray(collection) ? arrayMap : baseMap;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.sortBy` except that it allows specifying the sort
     * orders of the iteratees to sort by. If `orders` is unspecified, all values
     * are sorted in ascending order. Otherwise, specify an order of "desc" for
     * descending or "asc" for ascending sort order of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @param {string[]} [orders] The sort orders of `iteratees`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 34 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 36 }
     * ];
     *
     * // Sort by `user` in ascending order and by `age` in descending order.
     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     */
    function orderBy(collection, iteratees, orders, guard) {
      if (collection == null) {
        return [];
      }
      if (!isArray(iteratees)) {
        iteratees = iteratees == null ? [] : [iteratees];
      }
      orders = guard ? undefined : orders;
      if (!isArray(orders)) {
        orders = orders == null ? [] : [orders];
      }
      return baseOrderBy(collection, iteratees, orders);
    }

    /**
     * Creates an array of elements split into two groups, the first of which
     * contains elements `predicate` returns truthy for, the second of which
     * contains elements `predicate` returns falsey for. The predicate is
     * invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of grouped elements.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': true },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * _.partition(users, function(o) { return o.active; });
     * // => objects for [['fred'], ['barney', 'pebbles']]
     *
     * // The `_.matches` iteratee shorthand.
     * _.partition(users, { 'age': 1, 'active': false });
     * // => objects for [['pebbles'], ['barney', 'fred']]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.partition(users, ['active', false]);
     * // => objects for [['barney', 'pebbles'], ['fred']]
     *
     * // The `_.property` iteratee shorthand.
     * _.partition(users, 'active');
     * // => objects for [['fred'], ['barney', 'pebbles']]
     */
    var partition = createAggregator(function(result, value, key) {
      result[key ? 0 : 1].push(value);
    }, function() { return [[], []]; });

    /**
     * Reduces `collection` to a value which is the accumulated result of running
     * each element in `collection` thru `iteratee`, where each successive
     * invocation is supplied the return value of the previous. If `accumulator`
     * is not given, the first element of `collection` is used as the initial
     * value. The iteratee is invoked with four arguments:
     * (accumulator, value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.reduce`, `_.reduceRight`, and `_.transform`.
     *
     * The guarded methods are:
     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
     * and `sortBy`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduceRight
     * @example
     *
     * _.reduce([1, 2], function(sum, n) {
     *   return sum + n;
     * }, 0);
     * // => 3
     *
     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     *   return result;
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
     */
    function reduce(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduce : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
    }

    /**
     * This method is like `_.reduce` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduce
     * @example
     *
     * var array = [[0, 1], [2, 3], [4, 5]];
     *
     * _.reduceRight(array, function(flattened, other) {
     *   return flattened.concat(other);
     * }, []);
     * // => [4, 5, 2, 3, 0, 1]
     */
    function reduceRight(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduceRight : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
    }

    /**
     * The opposite of `_.filter`; this method returns the elements of `collection`
     * that `predicate` does **not** return truthy for.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.filter
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': true }
     * ];
     *
     * _.reject(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.reject(users, { 'age': 40, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.reject(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.reject(users, 'active');
     * // => objects for ['barney']
     */
    function reject(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, negate(getIteratee(predicate, 3)));
    }

    /**
     * Gets a random element from `collection`.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     * @example
     *
     * _.sample([1, 2, 3, 4]);
     * // => 2
     */
    function sample(collection) {
      var func = isArray(collection) ? arraySample : baseSample;
      return func(collection);
    }

    /**
     * Gets `n` random elements at unique keys from `collection` up to the
     * size of `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @param {number} [n=1] The number of elements to sample.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the random elements.
     * @example
     *
     * _.sampleSize([1, 2, 3], 2);
     * // => [3, 1]
     *
     * _.sampleSize([1, 2, 3], 4);
     * // => [2, 3, 1]
     */
    function sampleSize(collection, n, guard) {
      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      var func = isArray(collection) ? arraySampleSize : baseSampleSize;
      return func(collection, n);
    }

    /**
     * Creates an array of shuffled values, using a version of the
     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     * @example
     *
     * _.shuffle([1, 2, 3, 4]);
     * // => [4, 1, 3, 2]
     */
    function shuffle(collection) {
      var func = isArray(collection) ? arrayShuffle : baseShuffle;
      return func(collection);
    }

    /**
     * Gets the size of `collection` by returning its length for array-like
     * values or the number of own enumerable string keyed properties for objects.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @returns {number} Returns the collection size.
     * @example
     *
     * _.size([1, 2, 3]);
     * // => 3
     *
     * _.size({ 'a': 1, 'b': 2 });
     * // => 2
     *
     * _.size('pebbles');
     * // => 7
     */
    function size(collection) {
      if (collection == null) {
        return 0;
      }
      if (isArrayLike(collection)) {
        return isString(collection) ? stringSize(collection) : collection.length;
      }
      var tag = getTag(collection);
      if (tag == mapTag || tag == setTag) {
        return collection.size;
      }
      return baseKeys(collection).length;
    }

    /**
     * Checks if `predicate` returns truthy for **any** element of `collection`.
     * Iteration is stopped once `predicate` returns truthy. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     * @example
     *
     * _.some([null, 0, 'yes', false], Boolean);
     * // => true
     *
     * var users = [
     *   { 'user': 'barney', 'active': true },
     *   { 'user': 'fred',   'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.some(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.some(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.some(users, 'active');
     * // => true
     */
    function some(collection, predicate, guard) {
      var func = isArray(collection) ? arraySome : baseSome;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Creates an array of elements, sorted in ascending order by the results of
     * running each element in a collection thru each iteratee. This method
     * performs a stable sort, that is, it preserves the original sort order of
     * equal elements. The iteratees are invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 34 }
     * ];
     *
     * _.sortBy(users, [function(o) { return o.user; }]);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     *
     * _.sortBy(users, ['user', 'age']);
     * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
     */
    var sortBy = baseRest(function(collection, iteratees) {
      if (collection == null) {
        return [];
      }
      var length = iteratees.length;
      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
        iteratees = [];
      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
        iteratees = [iteratees[0]];
      }
      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Gets the timestamp of the number of milliseconds that have elapsed since
     * the Unix epoch (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Date
     * @returns {number} Returns the timestamp.
     * @example
     *
     * _.defer(function(stamp) {
     *   console.log(_.now() - stamp);
     * }, _.now());
     * // => Logs the number of milliseconds it took for the deferred invocation.
     */
    var now = ctxNow || function() {
      return root.Date.now();
    };

    /*------------------------------------------------------------------------*/

    /**
     * The opposite of `_.before`; this method creates a function that invokes
     * `func` once it's called `n` or more times.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {number} n The number of calls before `func` is invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var saves = ['profile', 'settings'];
     *
     * var done = _.after(saves.length, function() {
     *   console.log('done saving!');
     * });
     *
     * _.forEach(saves, function(type) {
     *   asyncSave({ 'type': type, 'complete': done });
     * });
     * // => Logs 'done saving!' after the two async saves have completed.
     */
    function after(n, func) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n < 1) {
          return func.apply(this, arguments);
        }
      };
    }

    /**
     * Creates a function that invokes `func`, with up to `n` arguments,
     * ignoring any additional arguments.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @param {number} [n=func.length] The arity cap.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.ary(parseInt, 1));
     * // => [6, 8, 10]
     */
    function ary(func, n, guard) {
      n = guard ? undefined : n;
      n = (func && n == null) ? func.length : n;
      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
    }

    /**
     * Creates a function that invokes `func`, with the `this` binding and arguments
     * of the created function, while it's called less than `n` times. Subsequent
     * calls to the created function return the result of the last `func` invocation.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {number} n The number of calls at which `func` is no longer invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * jQuery(element).on('click', _.before(5, addContactToList));
     * // => Allows adding up to 4 contacts to the list.
     */
    function before(n, func) {
      var result;
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n > 0) {
          result = func.apply(this, arguments);
        }
        if (n <= 1) {
          func = undefined;
        }
        return result;
      };
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of `thisArg`
     * and `partials` prepended to the arguments it receives.
     *
     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for partially applied arguments.
     *
     * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
     * property of bound functions.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to bind.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * function greet(greeting, punctuation) {
     *   return greeting + ' ' + this.user + punctuation;
     * }
     *
     * var object = { 'user': 'fred' };
     *
     * var bound = _.bind(greet, object, 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bind(greet, object, _, '!');
     * bound('hi');
     * // => 'hi fred!'
     */
    var bind = baseRest(function(func, thisArg, partials) {
      var bitmask = WRAP_BIND_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bind));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(func, bitmask, thisArg, partials, holders);
    });

    /**
     * Creates a function that invokes the method at `object[key]` with `partials`
     * prepended to the arguments it receives.
     *
     * This method differs from `_.bind` by allowing bound functions to reference
     * methods that may be redefined or don't yet exist. See
     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
     * for more details.
     *
     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Function
     * @param {Object} object The object to invoke the method on.
     * @param {string} key The key of the method.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var object = {
     *   'user': 'fred',
     *   'greet': function(greeting, punctuation) {
     *     return greeting + ' ' + this.user + punctuation;
     *   }
     * };
     *
     * var bound = _.bindKey(object, 'greet', 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * object.greet = function(greeting, punctuation) {
     *   return greeting + 'ya ' + this.user + punctuation;
     * };
     *
     * bound('!');
     * // => 'hiya fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bindKey(object, 'greet', _, '!');
     * bound('hi');
     * // => 'hiya fred!'
     */
    var bindKey = baseRest(function(object, key, partials) {
      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bindKey));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(key, bitmask, object, partials, holders);
    });

    /**
     * Creates a function that accepts arguments of `func` and either invokes
     * `func` returning its result, if at least `arity` number of arguments have
     * been provided, or returns a function that accepts the remaining `func`
     * arguments, and so on. The arity of `func` may be specified if `func.length`
     * is not sufficient.
     *
     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curry(abc);
     *
     * curried(1)(2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(1)(_, 3)(2);
     * // => [1, 2, 3]
     */
    function curry(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curry.placeholder;
      return result;
    }

    /**
     * This method is like `_.curry` except that arguments are applied to `func`
     * in the manner of `_.partialRight` instead of `_.partial`.
     *
     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curryRight(abc);
     *
     * curried(3)(2)(1);
     * // => [1, 2, 3]
     *
     * curried(2, 3)(1);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(3)(1, _)(2);
     * // => [1, 2, 3]
     */
    function curryRight(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curryRight.placeholder;
      return result;
    }

    /**
     * Creates a debounced function that delays invoking `func` until after `wait`
     * milliseconds have elapsed since the last time the debounced function was
     * invoked. The debounced function comes with a `cancel` method to cancel
     * delayed `func` invocations and a `flush` method to immediately invoke them.
     * Provide `options` to indicate whether `func` should be invoked on the
     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
     * with the last arguments provided to the debounced function. Subsequent
     * calls to the debounced function return the result of the last `func`
     * invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the debounced function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.debounce` and `_.throttle`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to debounce.
     * @param {number} [wait=0] The number of milliseconds to delay.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=false]
     *  Specify invoking on the leading edge of the timeout.
     * @param {number} [options.maxWait]
     *  The maximum time `func` is allowed to be delayed before it's invoked.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // Avoid costly calculations while the window size is in flux.
     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
     *
     * // Invoke `sendMail` when clicked, debouncing subsequent calls.
     * jQuery(element).on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * }));
     *
     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
     * var source = new EventSource('/stream');
     * jQuery(source).on('message', debounced);
     *
     * // Cancel the trailing debounced invocation.
     * jQuery(window).on('popstate', debounced.cancel);
     */
    function debounce(func, wait, options) {
      var lastArgs,
          lastThis,
          maxWait,
          result,
          timerId,
          lastCallTime,
          lastInvokeTime = 0,
          leading = false,
          maxing = false,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      wait = toNumber(wait) || 0;
      if (isObject(options)) {
        leading = !!options.leading;
        maxing = 'maxWait' in options;
        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }

      function invokeFunc(time) {
        var args = lastArgs,
            thisArg = lastThis;

        lastArgs = lastThis = undefined;
        lastInvokeTime = time;
        result = func.apply(thisArg, args);
        return result;
      }

      function leadingEdge(time) {
        // Reset any `maxWait` timer.
        lastInvokeTime = time;
        // Start the timer for the trailing edge.
        timerId = setTimeout(timerExpired, wait);
        // Invoke the leading edge.
        return leading ? invokeFunc(time) : result;
      }

      function remainingWait(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime,
            timeWaiting = wait - timeSinceLastCall;

        return maxing
          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
          : timeWaiting;
      }

      function shouldInvoke(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime;

        // Either this is the first call, activity has stopped and we're at the
        // trailing edge, the system time has gone backwards and we're treating
        // it as the trailing edge, or we've hit the `maxWait` limit.
        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
      }

      function timerExpired() {
        var time = now();
        if (shouldInvoke(time)) {
          return trailingEdge(time);
        }
        // Restart the timer.
        timerId = setTimeout(timerExpired, remainingWait(time));
      }

      function trailingEdge(time) {
        timerId = undefined;

        // Only invoke if we have `lastArgs` which means `func` has been
        // debounced at least once.
        if (trailing && lastArgs) {
          return invokeFunc(time);
        }
        lastArgs = lastThis = undefined;
        return result;
      }

      function cancel() {
        if (timerId !== undefined) {
          clearTimeout(timerId);
        }
        lastInvokeTime = 0;
        lastArgs = lastCallTime = lastThis = timerId = undefined;
      }

      function flush() {
        return timerId === undefined ? result : trailingEdge(now());
      }

      function debounced() {
        var time = now(),
            isInvoking = shouldInvoke(time);

        lastArgs = arguments;
        lastThis = this;
        lastCallTime = time;

        if (isInvoking) {
          if (timerId === undefined) {
            return leadingEdge(lastCallTime);
          }
          if (maxing) {
            // Handle invocations in a tight loop.
            timerId = setTimeout(timerExpired, wait);
            return invokeFunc(lastCallTime);
          }
        }
        if (timerId === undefined) {
          timerId = setTimeout(timerExpired, wait);
        }
        return result;
      }
      debounced.cancel = cancel;
      debounced.flush = flush;
      return debounced;
    }

    /**
     * Defers invoking the `func` until the current call stack has cleared. Any
     * additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to defer.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.defer(function(text) {
     *   console.log(text);
     * }, 'deferred');
     * // => Logs 'deferred' after one millisecond.
     */
    var defer = baseRest(function(func, args) {
      return baseDelay(func, 1, args);
    });

    /**
     * Invokes `func` after `wait` milliseconds. Any additional arguments are
     * provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.delay(function(text) {
     *   console.log(text);
     * }, 1000, 'later');
     * // => Logs 'later' after one second.
     */
    var delay = baseRest(function(func, wait, args) {
      return baseDelay(func, toNumber(wait) || 0, args);
    });

    /**
     * Creates a function that invokes `func` with arguments reversed.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to flip arguments for.
     * @returns {Function} Returns the new flipped function.
     * @example
     *
     * var flipped = _.flip(function() {
     *   return _.toArray(arguments);
     * });
     *
     * flipped('a', 'b', 'c', 'd');
     * // => ['d', 'c', 'b', 'a']
     */
    function flip(func) {
      return createWrap(func, WRAP_FLIP_FLAG);
    }

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided, it determines the cache key for storing the result based on the
     * arguments provided to the memoized function. By default, the first argument
     * provided to the memoized function is used as the map cache key. The `func`
     * is invoked with the `this` binding of the memoized function.
     *
     * **Note:** The cache is exposed as the `cache` property on the memoized
     * function. Its creation may be customized by replacing the `_.memoize.Cache`
     * constructor with one whose instances implement the
     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
     * method interface of `clear`, `delete`, `get`, `has`, and `set`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] The function to resolve the cache key.
     * @returns {Function} Returns the new memoized function.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     * var other = { 'c': 3, 'd': 4 };
     *
     * var values = _.memoize(_.values);
     * values(object);
     * // => [1, 2]
     *
     * values(other);
     * // => [3, 4]
     *
     * object.a = 2;
     * values(object);
     * // => [1, 2]
     *
     * // Modify the result cache.
     * values.cache.set(object, ['a', 'b']);
     * values(object);
     * // => ['a', 'b']
     *
     * // Replace `_.memoize.Cache`.
     * _.memoize.Cache = WeakMap;
     */
    function memoize(func, resolver) {
      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var memoized = function() {
        var args = arguments,
            key = resolver ? resolver.apply(this, args) : args[0],
            cache = memoized.cache;

        if (cache.has(key)) {
          return cache.get(key);
        }
        var result = func.apply(this, args);
        memoized.cache = cache.set(key, result) || cache;
        return result;
      };
      memoized.cache = new (memoize.Cache || MapCache);
      return memoized;
    }

    // Expose `MapCache`.
    memoize.Cache = MapCache;

    /**
     * Creates a function that negates the result of the predicate `func`. The
     * `func` predicate is invoked with the `this` binding and arguments of the
     * created function.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} predicate The predicate to negate.
     * @returns {Function} Returns the new negated function.
     * @example
     *
     * function isEven(n) {
     *   return n % 2 == 0;
     * }
     *
     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
     * // => [1, 3, 5]
     */
    function negate(predicate) {
      if (typeof predicate != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        var args = arguments;
        switch (args.length) {
          case 0: return !predicate.call(this);
          case 1: return !predicate.call(this, args[0]);
          case 2: return !predicate.call(this, args[0], args[1]);
          case 3: return !predicate.call(this, args[0], args[1], args[2]);
        }
        return !predicate.apply(this, args);
      };
    }

    /**
     * Creates a function that is restricted to invoking `func` once. Repeat calls
     * to the function return the value of the first invocation. The `func` is
     * invoked with the `this` binding and arguments of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // => `createApplication` is invoked once
     */
    function once(func) {
      return before(2, func);
    }

    /**
     * Creates a function that invokes `func` with its arguments transformed.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Function
     * @param {Function} func The function to wrap.
     * @param {...(Function|Function[])} [transforms=[_.identity]]
     *  The argument transforms.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function doubled(n) {
     *   return n * 2;
     * }
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var func = _.overArgs(function(x, y) {
     *   return [x, y];
     * }, [square, doubled]);
     *
     * func(9, 3);
     * // => [81, 6]
     *
     * func(10, 5);
     * // => [100, 10]
     */
    var overArgs = castRest(function(func, transforms) {
      transforms = (transforms.length == 1 && isArray(transforms[0]))
        ? arrayMap(transforms[0], baseUnary(getIteratee()))
        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));

      var funcsLength = transforms.length;
      return baseRest(function(args) {
        var index = -1,
            length = nativeMin(args.length, funcsLength);

        while (++index < length) {
          args[index] = transforms[index].call(this, args[index]);
        }
        return apply(func, this, args);
      });
    });

    /**
     * Creates a function that invokes `func` with `partials` prepended to the
     * arguments it receives. This method is like `_.bind` except it does **not**
     * alter the `this` binding.
     *
     * The `_.partial.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 0.2.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var sayHelloTo = _.partial(greet, 'hello');
     * sayHelloTo('fred');
     * // => 'hello fred'
     *
     * // Partially applied with placeholders.
     * var greetFred = _.partial(greet, _, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     */
    var partial = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partial));
      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
    });

    /**
     * This method is like `_.partial` except that partially applied arguments
     * are appended to the arguments it receives.
     *
     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var greetFred = _.partialRight(greet, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     *
     * // Partially applied with placeholders.
     * var sayHelloTo = _.partialRight(greet, 'hello', _);
     * sayHelloTo('fred');
     * // => 'hello fred'
     */
    var partialRight = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partialRight));
      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
    });

    /**
     * Creates a function that invokes `func` with arguments arranged according
     * to the specified `indexes` where the argument value at the first index is
     * provided as the first argument, the argument value at the second index is
     * provided as the second argument, and so on.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to rearrange arguments for.
     * @param {...(number|number[])} indexes The arranged argument indexes.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var rearged = _.rearg(function(a, b, c) {
     *   return [a, b, c];
     * }, [2, 0, 1]);
     *
     * rearged('b', 'c', 'a')
     * // => ['a', 'b', 'c']
     */
    var rearg = flatRest(function(func, indexes) {
      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
    });

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * created function and arguments from `start` and beyond provided as
     * an array.
     *
     * **Note:** This method is based on the
     * [rest parameter](https://mdn.io/rest_parameters).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.rest(function(what, names) {
     *   return what + ' ' + _.initial(names).join(', ') +
     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
     * });
     *
     * say('hello', 'fred', 'barney', 'pebbles');
     * // => 'hello fred, barney, & pebbles'
     */
    function rest(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start === undefined ? start : toInteger(start);
      return baseRest(func, start);
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * create function and an array of arguments much like
     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
     *
     * **Note:** This method is based on the
     * [spread operator](https://mdn.io/spread_operator).
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Function
     * @param {Function} func The function to spread arguments over.
     * @param {number} [start=0] The start position of the spread.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.spread(function(who, what) {
     *   return who + ' says ' + what;
     * });
     *
     * say(['fred', 'hello']);
     * // => 'fred says hello'
     *
     * var numbers = Promise.all([
     *   Promise.resolve(40),
     *   Promise.resolve(36)
     * ]);
     *
     * numbers.then(_.spread(function(x, y) {
     *   return x + y;
     * }));
     * // => a Promise of 76
     */
    function spread(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start == null ? 0 : nativeMax(toInteger(start), 0);
      return baseRest(function(args) {
        var array = args[start],
            otherArgs = castSlice(args, 0, start);

        if (array) {
          arrayPush(otherArgs, array);
        }
        return apply(func, this, otherArgs);
      });
    }

    /**
     * Creates a throttled function that only invokes `func` at most once per
     * every `wait` milliseconds. The throttled function comes with a `cancel`
     * method to cancel delayed `func` invocations and a `flush` method to
     * immediately invoke them. Provide `options` to indicate whether `func`
     * should be invoked on the leading and/or trailing edge of the `wait`
     * timeout. The `func` is invoked with the last arguments provided to the
     * throttled function. Subsequent calls to the throttled function return the
     * result of the last `func` invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the throttled function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.throttle` and `_.debounce`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to throttle.
     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=true]
     *  Specify invoking on the leading edge of the timeout.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new throttled function.
     * @example
     *
     * // Avoid excessively updating the position while scrolling.
     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
     *
     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
     * jQuery(element).on('click', throttled);
     *
     * // Cancel the trailing throttled invocation.
     * jQuery(window).on('popstate', throttled.cancel);
     */
    function throttle(func, wait, options) {
      var leading = true,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      if (isObject(options)) {
        leading = 'leading' in options ? !!options.leading : leading;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }
      return debounce(func, wait, {
        'leading': leading,
        'maxWait': wait,
        'trailing': trailing
      });
    }

    /**
     * Creates a function that accepts up to one argument, ignoring any
     * additional arguments.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.unary(parseInt));
     * // => [6, 8, 10]
     */
    function unary(func) {
      return ary(func, 1);
    }

    /**
     * Creates a function that provides `value` to `wrapper` as its first
     * argument. Any additional arguments provided to the function are appended
     * to those provided to the `wrapper`. The wrapper is invoked with the `this`
     * binding of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {*} value The value to wrap.
     * @param {Function} [wrapper=identity] The wrapper function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var p = _.wrap(_.escape, function(func, text) {
     *   return '<p>' + func(text) + '</p>';
     * });
     *
     * p('fred, barney, & pebbles');
     * // => '<p>fred, barney, &amp; pebbles</p>'
     */
    function wrap(value, wrapper) {
      return partial(castFunction(wrapper), value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Casts `value` as an array if it's not one.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Lang
     * @param {*} value The value to inspect.
     * @returns {Array} Returns the cast array.
     * @example
     *
     * _.castArray(1);
     * // => [1]
     *
     * _.castArray({ 'a': 1 });
     * // => [{ 'a': 1 }]
     *
     * _.castArray('abc');
     * // => ['abc']
     *
     * _.castArray(null);
     * // => [null]
     *
     * _.castArray(undefined);
     * // => [undefined]
     *
     * _.castArray();
     * // => []
     *
     * var array = [1, 2, 3];
     * console.log(_.castArray(array) === array);
     * // => true
     */
    function castArray() {
      if (!arguments.length) {
        return [];
      }
      var value = arguments[0];
      return isArray(value) ? value : [value];
    }

    /**
     * Creates a shallow clone of `value`.
     *
     * **Note:** This method is loosely based on the
     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
     * and supports cloning arrays, array buffers, booleans, date objects, maps,
     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
     * arrays. The own enumerable properties of `arguments` objects are cloned
     * as plain objects. An empty object is returned for uncloneable values such
     * as error objects, functions, DOM nodes, and WeakMaps.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to clone.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeep
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var shallow = _.clone(objects);
     * console.log(shallow[0] === objects[0]);
     * // => true
     */
    function clone(value) {
      return baseClone(value, CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.clone` except that it accepts `customizer` which
     * is invoked to produce the cloned value. If `customizer` returns `undefined`,
     * cloning is handled by the method instead. The `customizer` is invoked with
     * up to four arguments; (value [, index|key, object, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeepWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(false);
     *   }
     * }
     *
     * var el = _.cloneWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 0
     */
    function cloneWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * This method is like `_.clone` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @returns {*} Returns the deep cloned value.
     * @see _.clone
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var deep = _.cloneDeep(objects);
     * console.log(deep[0] === objects[0]);
     * // => false
     */
    function cloneDeep(value) {
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.cloneWith` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the deep cloned value.
     * @see _.cloneWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(true);
     *   }
     * }
     *
     * var el = _.cloneDeepWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 20
     */
    function cloneDeepWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * Checks if `object` conforms to `source` by invoking the predicate
     * properties of `source` with the corresponding property values of `object`.
     *
     * **Note:** This method is equivalent to `_.conforms` when `source` is
     * partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
     * // => true
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
     * // => false
     */
    function conformsTo(object, source) {
      return source == null || baseConformsTo(object, source, keys(source));
    }

    /**
     * Performs a
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * comparison between two values to determine if they are equivalent.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.eq(object, object);
     * // => true
     *
     * _.eq(object, other);
     * // => false
     *
     * _.eq('a', 'a');
     * // => true
     *
     * _.eq('a', Object('a'));
     * // => false
     *
     * _.eq(NaN, NaN);
     * // => true
     */
    function eq(value, other) {
      return value === other || (value !== value && other !== other);
    }

    /**
     * Checks if `value` is greater than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     * @see _.lt
     * @example
     *
     * _.gt(3, 1);
     * // => true
     *
     * _.gt(3, 3);
     * // => false
     *
     * _.gt(1, 3);
     * // => false
     */
    var gt = createRelationalOperation(baseGt);

    /**
     * Checks if `value` is greater than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than or equal to
     *  `other`, else `false`.
     * @see _.lte
     * @example
     *
     * _.gte(3, 1);
     * // => true
     *
     * _.gte(3, 3);
     * // => true
     *
     * _.gte(1, 3);
     * // => false
     */
    var gte = createRelationalOperation(function(value, other) {
      return value >= other;
    });

    /**
     * Checks if `value` is likely an `arguments` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     *  else `false`.
     * @example
     *
     * _.isArguments(function() { return arguments; }());
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
        !propertyIsEnumerable.call(value, 'callee');
    };

    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array, else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * _.isArray(document.body.children);
     * // => false
     *
     * _.isArray('abc');
     * // => false
     *
     * _.isArray(_.noop);
     * // => false
     */
    var isArray = Array.isArray;

    /**
     * Checks if `value` is classified as an `ArrayBuffer` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     * @example
     *
     * _.isArrayBuffer(new ArrayBuffer(2));
     * // => true
     *
     * _.isArrayBuffer(new Array(2));
     * // => false
     */
    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

    /**
     * Checks if `value` is array-like. A value is considered array-like if it's
     * not a function and has a `value.length` that's an integer greater than or
     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
     * @example
     *
     * _.isArrayLike([1, 2, 3]);
     * // => true
     *
     * _.isArrayLike(document.body.children);
     * // => true
     *
     * _.isArrayLike('abc');
     * // => true
     *
     * _.isArrayLike(_.noop);
     * // => false
     */
    function isArrayLike(value) {
      return value != null && isLength(value.length) && !isFunction(value);
    }

    /**
     * This method is like `_.isArrayLike` except that it also checks if `value`
     * is an object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array-like object,
     *  else `false`.
     * @example
     *
     * _.isArrayLikeObject([1, 2, 3]);
     * // => true
     *
     * _.isArrayLikeObject(document.body.children);
     * // => true
     *
     * _.isArrayLikeObject('abc');
     * // => false
     *
     * _.isArrayLikeObject(_.noop);
     * // => false
     */
    function isArrayLikeObject(value) {
      return isObjectLike(value) && isArrayLike(value);
    }

    /**
     * Checks if `value` is classified as a boolean primitive or object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
     * @example
     *
     * _.isBoolean(false);
     * // => true
     *
     * _.isBoolean(null);
     * // => false
     */
    function isBoolean(value) {
      return value === true || value === false ||
        (isObjectLike(value) && baseGetTag(value) == boolTag);
    }

    /**
     * Checks if `value` is a buffer.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
     * @example
     *
     * _.isBuffer(new Buffer(2));
     * // => true
     *
     * _.isBuffer(new Uint8Array(2));
     * // => false
     */
    var isBuffer = nativeIsBuffer || stubFalse;

    /**
     * Checks if `value` is classified as a `Date` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     * @example
     *
     * _.isDate(new Date);
     * // => true
     *
     * _.isDate('Mon April 23 2012');
     * // => false
     */
    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

    /**
     * Checks if `value` is likely a DOM element.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
     * @example
     *
     * _.isElement(document.body);
     * // => true
     *
     * _.isElement('<body>');
     * // => false
     */
    function isElement(value) {
      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
    }

    /**
     * Checks if `value` is an empty object, collection, map, or set.
     *
     * Objects are considered empty if they have no own enumerable string keyed
     * properties.
     *
     * Array-like values such as `arguments` objects, arrays, buffers, strings, or
     * jQuery-like collections are considered empty if they have a `length` of `0`.
     * Similarly, maps and sets are considered empty if they have a `size` of `0`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is empty, else `false`.
     * @example
     *
     * _.isEmpty(null);
     * // => true
     *
     * _.isEmpty(true);
     * // => true
     *
     * _.isEmpty(1);
     * // => true
     *
     * _.isEmpty([1, 2, 3]);
     * // => false
     *
     * _.isEmpty({ 'a': 1 });
     * // => false
     */
    function isEmpty(value) {
      if (value == null) {
        return true;
      }
      if (isArrayLike(value) &&
          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
            isBuffer(value) || isTypedArray(value) || isArguments(value))) {
        return !value.length;
      }
      var tag = getTag(value);
      if (tag == mapTag || tag == setTag) {
        return !value.size;
      }
      if (isPrototype(value)) {
        return !baseKeys(value).length;
      }
      for (var key in value) {
        if (hasOwnProperty.call(value, key)) {
          return false;
        }
      }
      return true;
    }

    /**
     * Performs a deep comparison between two values to determine if they are
     * equivalent.
     *
     * **Note:** This method supports comparing arrays, array buffers, booleans,
     * date objects, error objects, maps, numbers, `Object` objects, regexes,
     * sets, strings, symbols, and typed arrays. `Object` objects are compared
     * by their own, not inherited, enumerable properties. Functions and DOM
     * nodes are compared by strict equality, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.isEqual(object, other);
     * // => true
     *
     * object === other;
     * // => false
     */
    function isEqual(value, other) {
      return baseIsEqual(value, other);
    }

    /**
     * This method is like `_.isEqual` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with up to
     * six arguments: (objValue, othValue [, index|key, object, other, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, othValue) {
     *   if (isGreeting(objValue) && isGreeting(othValue)) {
     *     return true;
     *   }
     * }
     *
     * var array = ['hello', 'goodbye'];
     * var other = ['hi', 'goodbye'];
     *
     * _.isEqualWith(array, other, customizer);
     * // => true
     */
    function isEqualWith(value, other, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      var result = customizer ? customizer(value, other) : undefined;
      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
    }

    /**
     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
     * `SyntaxError`, `TypeError`, or `URIError` object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
     * @example
     *
     * _.isError(new Error);
     * // => true
     *
     * _.isError(Error);
     * // => false
     */
    function isError(value) {
      if (!isObjectLike(value)) {
        return false;
      }
      var tag = baseGetTag(value);
      return tag == errorTag || tag == domExcTag ||
        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
    }

    /**
     * Checks if `value` is a finite primitive number.
     *
     * **Note:** This method is based on
     * [`Number.isFinite`](https://mdn.io/Number/isFinite).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
     * @example
     *
     * _.isFinite(3);
     * // => true
     *
     * _.isFinite(Number.MIN_VALUE);
     * // => true
     *
     * _.isFinite(Infinity);
     * // => false
     *
     * _.isFinite('3');
     * // => false
     */
    function isFinite(value) {
      return typeof value == 'number' && nativeIsFinite(value);
    }

    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a function, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      if (!isObject(value)) {
        return false;
      }
      // The use of `Object#toString` avoids issues with the `typeof` operator
      // in Safari 9 which returns 'object' for typed arrays and other constructors.
      var tag = baseGetTag(value);
      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
    }

    /**
     * Checks if `value` is an integer.
     *
     * **Note:** This method is based on
     * [`Number.isInteger`](https://mdn.io/Number/isInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
     * @example
     *
     * _.isInteger(3);
     * // => true
     *
     * _.isInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isInteger(Infinity);
     * // => false
     *
     * _.isInteger('3');
     * // => false
     */
    function isInteger(value) {
      return typeof value == 'number' && value == toInteger(value);
    }

    /**
     * Checks if `value` is a valid array-like length.
     *
     * **Note:** This method is loosely based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
     * @example
     *
     * _.isLength(3);
     * // => true
     *
     * _.isLength(Number.MIN_VALUE);
     * // => false
     *
     * _.isLength(Infinity);
     * // => false
     *
     * _.isLength('3');
     * // => false
     */
    function isLength(value) {
      return typeof value == 'number' &&
        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is the
     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(_.noop);
     * // => true
     *
     * _.isObject(null);
     * // => false
     */
    function isObject(value) {
      var type = typeof value;
      return value != null && (type == 'object' || type == 'function');
    }

    /**
     * Checks if `value` is object-like. A value is object-like if it's not `null`
     * and has a `typeof` result of "object".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
     * @example
     *
     * _.isObjectLike({});
     * // => true
     *
     * _.isObjectLike([1, 2, 3]);
     * // => true
     *
     * _.isObjectLike(_.noop);
     * // => false
     *
     * _.isObjectLike(null);
     * // => false
     */
    function isObjectLike(value) {
      return value != null && typeof value == 'object';
    }

    /**
     * Checks if `value` is classified as a `Map` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     * @example
     *
     * _.isMap(new Map);
     * // => true
     *
     * _.isMap(new WeakMap);
     * // => false
     */
    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

    /**
     * Performs a partial deep comparison between `object` and `source` to
     * determine if `object` contains equivalent property values.
     *
     * **Note:** This method is equivalent to `_.matches` when `source` is
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.isMatch(object, { 'b': 2 });
     * // => true
     *
     * _.isMatch(object, { 'b': 1 });
     * // => false
     */
    function isMatch(object, source) {
      return object === source || baseIsMatch(object, source, getMatchData(source));
    }

    /**
     * This method is like `_.isMatch` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with five
     * arguments: (objValue, srcValue, index|key, object, source).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, srcValue) {
     *   if (isGreeting(objValue) && isGreeting(srcValue)) {
     *     return true;
     *   }
     * }
     *
     * var object = { 'greeting': 'hello' };
     * var source = { 'greeting': 'hi' };
     *
     * _.isMatchWith(object, source, customizer);
     * // => true
     */
    function isMatchWith(object, source, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseIsMatch(object, source, getMatchData(source), customizer);
    }

    /**
     * Checks if `value` is `NaN`.
     *
     * **Note:** This method is based on
     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
     * `undefined` and other non-number values.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
     * @example
     *
     * _.isNaN(NaN);
     * // => true
     *
     * _.isNaN(new Number(NaN));
     * // => true
     *
     * isNaN(undefined);
     * // => true
     *
     * _.isNaN(undefined);
     * // => false
     */
    function isNaN(value) {
      // An `NaN` primitive is the only value that is not equal to itself.
      // Perform the `toStringTag` check first to avoid errors with some
      // ActiveX objects in IE.
      return isNumber(value) && value != +value;
    }

    /**
     * Checks if `value` is a pristine native function.
     *
     * **Note:** This method can't reliably detect native functions in the presence
     * of the core-js package because core-js circumvents this kind of detection.
     * Despite multiple requests, the core-js maintainer has made it clear: any
     * attempt to fix the detection will be obstructed. As a result, we're left
     * with little choice but to throw an error. Unfortunately, this also affects
     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
     * which rely on core-js.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     * @example
     *
     * _.isNative(Array.prototype.push);
     * // => true
     *
     * _.isNative(_);
     * // => false
     */
    function isNative(value) {
      if (isMaskable(value)) {
        throw new Error(CORE_ERROR_TEXT);
      }
      return baseIsNative(value);
    }

    /**
     * Checks if `value` is `null`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
     * @example
     *
     * _.isNull(null);
     * // => true
     *
     * _.isNull(void 0);
     * // => false
     */
    function isNull(value) {
      return value === null;
    }

    /**
     * Checks if `value` is `null` or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
     * @example
     *
     * _.isNil(null);
     * // => true
     *
     * _.isNil(void 0);
     * // => true
     *
     * _.isNil(NaN);
     * // => false
     */
    function isNil(value) {
      return value == null;
    }

    /**
     * Checks if `value` is classified as a `Number` primitive or object.
     *
     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
     * classified as numbers, use the `_.isFinite` method.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a number, else `false`.
     * @example
     *
     * _.isNumber(3);
     * // => true
     *
     * _.isNumber(Number.MIN_VALUE);
     * // => true
     *
     * _.isNumber(Infinity);
     * // => true
     *
     * _.isNumber('3');
     * // => false
     */
    function isNumber(value) {
      return typeof value == 'number' ||
        (isObjectLike(value) && baseGetTag(value) == numberTag);
    }

    /**
     * Checks if `value` is a plain object, that is, an object created by the
     * `Object` constructor or one with a `[[Prototype]]` of `null`.
     *
     * @static
     * @memberOf _
     * @since 0.8.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * _.isPlainObject(new Foo);
     * // => false
     *
     * _.isPlainObject([1, 2, 3]);
     * // => false
     *
     * _.isPlainObject({ 'x': 0, 'y': 0 });
     * // => true
     *
     * _.isPlainObject(Object.create(null));
     * // => true
     */
    function isPlainObject(value) {
      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
        return false;
      }
      var proto = getPrototype(value);
      if (proto === null) {
        return true;
      }
      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
      return typeof Ctor == 'function' && Ctor instanceof Ctor &&
        funcToString.call(Ctor) == objectCtorString;
    }

    /**
     * Checks if `value` is classified as a `RegExp` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     * @example
     *
     * _.isRegExp(/abc/);
     * // => true
     *
     * _.isRegExp('/abc/');
     * // => false
     */
    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

    /**
     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
     * double precision number which isn't the result of a rounded unsafe integer.
     *
     * **Note:** This method is based on
     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
     * @example
     *
     * _.isSafeInteger(3);
     * // => true
     *
     * _.isSafeInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isSafeInteger(Infinity);
     * // => false
     *
     * _.isSafeInteger('3');
     * // => false
     */
    function isSafeInteger(value) {
      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is classified as a `Set` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     * @example
     *
     * _.isSet(new Set);
     * // => true
     *
     * _.isSet(new WeakSet);
     * // => false
     */
    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

    /**
     * Checks if `value` is classified as a `String` primitive or object.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a string, else `false`.
     * @example
     *
     * _.isString('abc');
     * // => true
     *
     * _.isString(1);
     * // => false
     */
    function isString(value) {
      return typeof value == 'string' ||
        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
    }

    /**
     * Checks if `value` is classified as a `Symbol` primitive or object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
     * @example
     *
     * _.isSymbol(Symbol.iterator);
     * // => true
     *
     * _.isSymbol('abc');
     * // => false
     */
    function isSymbol(value) {
      return typeof value == 'symbol' ||
        (isObjectLike(value) && baseGetTag(value) == symbolTag);
    }

    /**
     * Checks if `value` is classified as a typed array.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     * @example
     *
     * _.isTypedArray(new Uint8Array);
     * // => true
     *
     * _.isTypedArray([]);
     * // => false
     */
    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

    /**
     * Checks if `value` is `undefined`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
     * @example
     *
     * _.isUndefined(void 0);
     * // => true
     *
     * _.isUndefined(null);
     * // => false
     */
    function isUndefined(value) {
      return value === undefined;
    }

    /**
     * Checks if `value` is classified as a `WeakMap` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
     * @example
     *
     * _.isWeakMap(new WeakMap);
     * // => true
     *
     * _.isWeakMap(new Map);
     * // => false
     */
    function isWeakMap(value) {
      return isObjectLike(value) && getTag(value) == weakMapTag;
    }

    /**
     * Checks if `value` is classified as a `WeakSet` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
     * @example
     *
     * _.isWeakSet(new WeakSet);
     * // => true
     *
     * _.isWeakSet(new Set);
     * // => false
     */
    function isWeakSet(value) {
      return isObjectLike(value) && baseGetTag(value) == weakSetTag;
    }

    /**
     * Checks if `value` is less than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     * @see _.gt
     * @example
     *
     * _.lt(1, 3);
     * // => true
     *
     * _.lt(3, 3);
     * // => false
     *
     * _.lt(3, 1);
     * // => false
     */
    var lt = createRelationalOperation(baseLt);

    /**
     * Checks if `value` is less than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than or equal to
     *  `other`, else `false`.
     * @see _.gte
     * @example
     *
     * _.lte(1, 3);
     * // => true
     *
     * _.lte(3, 3);
     * // => true
     *
     * _.lte(3, 1);
     * // => false
     */
    var lte = createRelationalOperation(function(value, other) {
      return value <= other;
    });

    /**
     * Converts `value` to an array.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Array} Returns the converted array.
     * @example
     *
     * _.toArray({ 'a': 1, 'b': 2 });
     * // => [1, 2]
     *
     * _.toArray('abc');
     * // => ['a', 'b', 'c']
     *
     * _.toArray(1);
     * // => []
     *
     * _.toArray(null);
     * // => []
     */
    function toArray(value) {
      if (!value) {
        return [];
      }
      if (isArrayLike(value)) {
        return isString(value) ? stringToArray(value) : copyArray(value);
      }
      if (symIterator && value[symIterator]) {
        return iteratorToArray(value[symIterator]());
      }
      var tag = getTag(value),
          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);

      return func(value);
    }

    /**
     * Converts `value` to a finite number.
     *
     * @static
     * @memberOf _
     * @since 4.12.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted number.
     * @example
     *
     * _.toFinite(3.2);
     * // => 3.2
     *
     * _.toFinite(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toFinite(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toFinite('3.2');
     * // => 3.2
     */
    function toFinite(value) {
      if (!value) {
        return value === 0 ? value : 0;
      }
      value = toNumber(value);
      if (value === INFINITY || value === -INFINITY) {
        var sign = (value < 0 ? -1 : 1);
        return sign * MAX_INTEGER;
      }
      return value === value ? value : 0;
    }

    /**
     * Converts `value` to an integer.
     *
     * **Note:** This method is loosely based on
     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toInteger(3.2);
     * // => 3
     *
     * _.toInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toInteger(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toInteger('3.2');
     * // => 3
     */
    function toInteger(value) {
      var result = toFinite(value),
          remainder = result % 1;

      return result === result ? (remainder ? result - remainder : result) : 0;
    }

    /**
     * Converts `value` to an integer suitable for use as the length of an
     * array-like object.
     *
     * **Note:** This method is based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toLength(3.2);
     * // => 3
     *
     * _.toLength(Number.MIN_VALUE);
     * // => 0
     *
     * _.toLength(Infinity);
     * // => 4294967295
     *
     * _.toLength('3.2');
     * // => 3
     */
    function toLength(value) {
      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
    }

    /**
     * Converts `value` to a number.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     * @example
     *
     * _.toNumber(3.2);
     * // => 3.2
     *
     * _.toNumber(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toNumber(Infinity);
     * // => Infinity
     *
     * _.toNumber('3.2');
     * // => 3.2
     */
    function toNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      if (isObject(value)) {
        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
        value = isObject(other) ? (other + '') : other;
      }
      if (typeof value != 'string') {
        return value === 0 ? value : +value;
      }
      value = value.replace(reTrim, '');
      var isBinary = reIsBinary.test(value);
      return (isBinary || reIsOctal.test(value))
        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
        : (reIsBadHex.test(value) ? NAN : +value);
    }

    /**
     * Converts `value` to a plain object flattening inherited enumerable string
     * keyed properties of `value` to own properties of the plain object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Object} Returns the converted plain object.
     * @example
     *
     * function Foo() {
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.assign({ 'a': 1 }, new Foo);
     * // => { 'a': 1, 'b': 2 }
     *
     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
     * // => { 'a': 1, 'b': 2, 'c': 3 }
     */
    function toPlainObject(value) {
      return copyObject(value, keysIn(value));
    }

    /**
     * Converts `value` to a safe integer. A safe integer can be compared and
     * represented correctly.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toSafeInteger(3.2);
     * // => 3
     *
     * _.toSafeInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toSafeInteger(Infinity);
     * // => 9007199254740991
     *
     * _.toSafeInteger('3.2');
     * // => 3
     */
    function toSafeInteger(value) {
      return value
        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
        : (value === 0 ? value : 0);
    }

    /**
     * Converts `value` to a string. An empty string is returned for `null`
     * and `undefined` values. The sign of `-0` is preserved.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.toString(null);
     * // => ''
     *
     * _.toString(-0);
     * // => '-0'
     *
     * _.toString([1, 2, 3]);
     * // => '1,2,3'
     */
    function toString(value) {
      return value == null ? '' : baseToString(value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Assigns own enumerable string keyed properties of source objects to the
     * destination object. Source objects are applied from left to right.
     * Subsequent sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object` and is loosely based on
     * [`Object.assign`](https://mdn.io/Object/assign).
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assignIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assign({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'c': 3 }
     */
    var assign = createAssigner(function(object, source) {
      if (isPrototype(source) || isArrayLike(source)) {
        copyObject(source, keys(source), object);
        return;
      }
      for (var key in source) {
        if (hasOwnProperty.call(source, key)) {
          assignValue(object, key, source[key]);
        }
      }
    });

    /**
     * This method is like `_.assign` except that it iterates over own and
     * inherited source properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extend
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assign
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assignIn({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
     */
    var assignIn = createAssigner(function(object, source) {
      copyObject(source, keysIn(source), object);
    });

    /**
     * This method is like `_.assignIn` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extendWith
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignInWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keysIn(source), object, customizer);
    });

    /**
     * This method is like `_.assign` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignInWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keys(source), object, customizer);
    });

    /**
     * Creates an array of values corresponding to `paths` of `object`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Array} Returns the picked values.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _.at(object, ['a[0].b.c', 'a[1]']);
     * // => [3, 4]
     */
    var at = flatRest(baseAt);

    /**
     * Creates an object that inherits from the `prototype` object. If a
     * `properties` object is given, its own enumerable string keyed properties
     * are assigned to the created object.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Object
     * @param {Object} prototype The object to inherit from.
     * @param {Object} [properties] The properties to assign to the object.
     * @returns {Object} Returns the new object.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * function Circle() {
     *   Shape.call(this);
     * }
     *
     * Circle.prototype = _.create(Shape.prototype, {
     *   'constructor': Circle
     * });
     *
     * var circle = new Circle;
     * circle instanceof Circle;
     * // => true
     *
     * circle instanceof Shape;
     * // => true
     */
    function create(prototype, properties) {
      var result = baseCreate(prototype);
      return properties == null ? result : baseAssign(result, properties);
    }

    /**
     * Assigns own and inherited enumerable string keyed properties of source
     * objects to the destination object for all destination properties that
     * resolve to `undefined`. Source objects are applied from left to right.
     * Once a property is set, additional values of the same property are ignored.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaultsDeep
     * @example
     *
     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var defaults = baseRest(function(object, sources) {
      object = Object(object);

      var index = -1;
      var length = sources.length;
      var guard = length > 2 ? sources[2] : undefined;

      if (guard && isIterateeCall(sources[0], sources[1], guard)) {
        length = 1;
      }

      while (++index < length) {
        var source = sources[index];
        var props = keysIn(source);
        var propsIndex = -1;
        var propsLength = props.length;

        while (++propsIndex < propsLength) {
          var key = props[propsIndex];
          var value = object[key];

          if (value === undefined ||
              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
            object[key] = source[key];
          }
        }
      }

      return object;
    });

    /**
     * This method is like `_.defaults` except that it recursively assigns
     * default properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaults
     * @example
     *
     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
     * // => { 'a': { 'b': 2, 'c': 3 } }
     */
    var defaultsDeep = baseRest(function(args) {
      args.push(undefined, customDefaultsMerge);
      return apply(mergeWith, undefined, args);
    });

    /**
     * This method is like `_.find` except that it returns the key of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findKey(users, function(o) { return o.age < 40; });
     * // => 'barney' (iteration order is not guaranteed)
     *
     * // The `_.matches` iteratee shorthand.
     * _.findKey(users, { 'age': 1, 'active': true });
     * // => 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findKey(users, 'active');
     * // => 'barney'
     */
    function findKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
    }

    /**
     * This method is like `_.findKey` except that it iterates over elements of
     * a collection in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findLastKey(users, function(o) { return o.age < 40; });
     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastKey(users, { 'age': 36, 'active': true });
     * // => 'barney'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastKey(users, 'active');
     * // => 'pebbles'
     */
    function findLastKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
    }

    /**
     * Iterates over own and inherited enumerable string keyed properties of an
     * object and invokes `iteratee` for each property. The iteratee is invoked
     * with three arguments: (value, key, object). Iteratee functions may exit
     * iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forInRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forIn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
     */
    function forIn(object, iteratee) {
      return object == null
        ? object
        : baseFor(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * This method is like `_.forIn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forInRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
     */
    function forInRight(object, iteratee) {
      return object == null
        ? object
        : baseForRight(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * Iterates over own enumerable string keyed properties of an object and
     * invokes `iteratee` for each property. The iteratee is invoked with three
     * arguments: (value, key, object). Iteratee functions may exit iteration
     * early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwnRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forOwn(object, iteratee) {
      return object && baseForOwn(object, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forOwn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwnRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
     */
    function forOwnRight(object, iteratee) {
      return object && baseForOwnRight(object, getIteratee(iteratee, 3));
    }

    /**
     * Creates an array of function property names from own enumerable properties
     * of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functionsIn
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functions(new Foo);
     * // => ['a', 'b']
     */
    function functions(object) {
      return object == null ? [] : baseFunctions(object, keys(object));
    }

    /**
     * Creates an array of function property names from own and inherited
     * enumerable properties of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functions
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functionsIn(new Foo);
     * // => ['a', 'b', 'c']
     */
    function functionsIn(object) {
      return object == null ? [] : baseFunctions(object, keysIn(object));
    }

    /**
     * Gets the value at `path` of `object`. If the resolved value is
     * `undefined`, the `defaultValue` is returned in its place.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.get(object, 'a[0].b.c');
     * // => 3
     *
     * _.get(object, ['a', '0', 'b', 'c']);
     * // => 3
     *
     * _.get(object, 'a.b.c', 'default');
     * // => 'default'
     */
    function get(object, path, defaultValue) {
      var result = object == null ? undefined : baseGet(object, path);
      return result === undefined ? defaultValue : result;
    }

    /**
     * Checks if `path` is a direct property of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = { 'a': { 'b': 2 } };
     * var other = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.has(object, 'a');
     * // => true
     *
     * _.has(object, 'a.b');
     * // => true
     *
     * _.has(object, ['a', 'b']);
     * // => true
     *
     * _.has(other, 'a');
     * // => false
     */
    function has(object, path) {
      return object != null && hasPath(object, path, baseHas);
    }

    /**
     * Checks if `path` is a direct or inherited property of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.hasIn(object, 'a');
     * // => true
     *
     * _.hasIn(object, 'a.b');
     * // => true
     *
     * _.hasIn(object, ['a', 'b']);
     * // => true
     *
     * _.hasIn(object, 'b');
     * // => false
     */
    function hasIn(object, path) {
      return object != null && hasPath(object, path, baseHasIn);
    }

    /**
     * Creates an object composed of the inverted keys and values of `object`.
     * If `object` contains duplicate values, subsequent values overwrite
     * property assignments of previous values.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Object
     * @param {Object} object The object to invert.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invert(object);
     * // => { '1': 'c', '2': 'b' }
     */
    var invert = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      result[value] = key;
    }, constant(identity));

    /**
     * This method is like `_.invert` except that the inverted object is generated
     * from the results of running each element of `object` thru `iteratee`. The
     * corresponding inverted value of each inverted key is an array of keys
     * responsible for generating the inverted value. The iteratee is invoked
     * with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Object
     * @param {Object} object The object to invert.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invertBy(object);
     * // => { '1': ['a', 'c'], '2': ['b'] }
     *
     * _.invertBy(object, function(value) {
     *   return 'group' + value;
     * });
     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
     */
    var invertBy = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      if (hasOwnProperty.call(result, value)) {
        result[value].push(key);
      } else {
        result[value] = [key];
      }
    }, getIteratee);

    /**
     * Invokes the method at `path` of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
     *
     * _.invoke(object, 'a[0].b.c.slice', 1, 3);
     * // => [2, 3]
     */
    var invoke = baseRest(baseInvoke);

    /**
     * Creates an array of the own enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects. See the
     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * for more details.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keys(new Foo);
     * // => ['a', 'b'] (iteration order is not guaranteed)
     *
     * _.keys('hi');
     * // => ['0', '1']
     */
    function keys(object) {
      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
    }

    /**
     * Creates an array of the own and inherited enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keysIn(new Foo);
     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
     */
    function keysIn(object) {
      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
    }

    /**
     * The opposite of `_.mapValues`; this method creates an object with the
     * same values as `object` and keys generated by running each own enumerable
     * string keyed property of `object` thru `iteratee`. The iteratee is invoked
     * with three arguments: (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapValues
     * @example
     *
     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
     *   return key + value;
     * });
     * // => { 'a1': 1, 'b2': 2 }
     */
    function mapKeys(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, iteratee(value, key, object), value);
      });
      return result;
    }

    /**
     * Creates an object with the same keys as `object` and values generated
     * by running each own enumerable string keyed property of `object` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapKeys
     * @example
     *
     * var users = {
     *   'fred':    { 'user': 'fred',    'age': 40 },
     *   'pebbles': { 'user': 'pebbles', 'age': 1 }
     * };
     *
     * _.mapValues(users, function(o) { return o.age; });
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     *
     * // The `_.property` iteratee shorthand.
     * _.mapValues(users, 'age');
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     */
    function mapValues(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, key, iteratee(value, key, object));
      });
      return result;
    }

    /**
     * This method is like `_.assign` except that it recursively merges own and
     * inherited enumerable string keyed properties of source objects into the
     * destination object. Source properties that resolve to `undefined` are
     * skipped if a destination value exists. Array and plain object properties
     * are merged recursively. Other objects and value types are overridden by
     * assignment. Source objects are applied from left to right. Subsequent
     * sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {
     *   'a': [{ 'b': 2 }, { 'd': 4 }]
     * };
     *
     * var other = {
     *   'a': [{ 'c': 3 }, { 'e': 5 }]
     * };
     *
     * _.merge(object, other);
     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
     */
    var merge = createAssigner(function(object, source, srcIndex) {
      baseMerge(object, source, srcIndex);
    });

    /**
     * This method is like `_.merge` except that it accepts `customizer` which
     * is invoked to produce the merged values of the destination and source
     * properties. If `customizer` returns `undefined`, merging is handled by the
     * method instead. The `customizer` is invoked with six arguments:
     * (objValue, srcValue, key, object, source, stack).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} customizer The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   if (_.isArray(objValue)) {
     *     return objValue.concat(srcValue);
     *   }
     * }
     *
     * var object = { 'a': [1], 'b': [2] };
     * var other = { 'a': [3], 'b': [4] };
     *
     * _.mergeWith(object, other, customizer);
     * // => { 'a': [1, 3], 'b': [2, 4] }
     */
    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
      baseMerge(object, source, srcIndex, customizer);
    });

    /**
     * The opposite of `_.pick`; this method creates an object composed of the
     * own and inherited enumerable property paths of `object` that are not omitted.
     *
     * **Note:** This method is considerably slower than `_.pick`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to omit.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omit(object, ['a', 'c']);
     * // => { 'b': '2' }
     */
    var omit = flatRest(function(object, paths) {
      var result = {};
      if (object == null) {
        return result;
      }
      var isDeep = false;
      paths = arrayMap(paths, function(path) {
        path = castPath(path, object);
        isDeep || (isDeep = path.length > 1);
        return path;
      });
      copyObject(object, getAllKeysIn(object), result);
      if (isDeep) {
        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
      }
      var length = paths.length;
      while (length--) {
        baseUnset(result, paths[length]);
      }
      return result;
    });

    /**
     * The opposite of `_.pickBy`; this method creates an object composed of
     * the own and inherited enumerable string keyed properties of `object` that
     * `predicate` doesn't return truthy for. The predicate is invoked with two
     * arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omitBy(object, _.isNumber);
     * // => { 'b': '2' }
     */
    function omitBy(object, predicate) {
      return pickBy(object, negate(getIteratee(predicate)));
    }

    /**
     * Creates an object composed of the picked `object` properties.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pick(object, ['a', 'c']);
     * // => { 'a': 1, 'c': 3 }
     */
    var pick = flatRest(function(object, paths) {
      return object == null ? {} : basePick(object, paths);
    });

    /**
     * Creates an object composed of the `object` properties `predicate` returns
     * truthy for. The predicate is invoked with two arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pickBy(object, _.isNumber);
     * // => { 'a': 1, 'c': 3 }
     */
    function pickBy(object, predicate) {
      if (object == null) {
        return {};
      }
      var props = arrayMap(getAllKeysIn(object), function(prop) {
        return [prop];
      });
      predicate = getIteratee(predicate);
      return basePickBy(object, props, function(value, path) {
        return predicate(value, path[0]);
      });
    }

    /**
     * This method is like `_.get` except that if the resolved value is a
     * function it's invoked with the `this` binding of its parent object and
     * its result is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to resolve.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
     *
     * _.result(object, 'a[0].b.c1');
     * // => 3
     *
     * _.result(object, 'a[0].b.c2');
     * // => 4
     *
     * _.result(object, 'a[0].b.c3', 'default');
     * // => 'default'
     *
     * _.result(object, 'a[0].b.c3', _.constant('default'));
     * // => 'default'
     */
    function result(object, path, defaultValue) {
      path = castPath(path, object);

      var index = -1,
          length = path.length;

      // Ensure the loop is entered when path is empty.
      if (!length) {
        length = 1;
        object = undefined;
      }
      while (++index < length) {
        var value = object == null ? undefined : object[toKey(path[index])];
        if (value === undefined) {
          index = length;
          value = defaultValue;
        }
        object = isFunction(value) ? value.call(object) : value;
      }
      return object;
    }

    /**
     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
     * it's created. Arrays are created for missing index properties while objects
     * are created for all other missing properties. Use `_.setWith` to customize
     * `path` creation.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.set(object, 'a[0].b.c', 4);
     * console.log(object.a[0].b.c);
     * // => 4
     *
     * _.set(object, ['x', '0', 'y', 'z'], 5);
     * console.log(object.x[0].y.z);
     * // => 5
     */
    function set(object, path, value) {
      return object == null ? object : baseSet(object, path, value);
    }

    /**
     * This method is like `_.set` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.setWith(object, '[0][1]', 'a', Object);
     * // => { '0': { '1': 'a' } }
     */
    function setWith(object, path, value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseSet(object, path, value, customizer);
    }

    /**
     * Creates an array of own enumerable string keyed-value pairs for `object`
     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
     * entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entries
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairs(new Foo);
     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
     */
    var toPairs = createToPairs(keys);

    /**
     * Creates an array of own and inherited enumerable string keyed-value pairs
     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
     * or set, its entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entriesIn
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairsIn(new Foo);
     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
     */
    var toPairsIn = createToPairs(keysIn);

    /**
     * An alternative to `_.reduce`; this method transforms `object` to a new
     * `accumulator` object which is the result of running each of its own
     * enumerable string keyed properties thru `iteratee`, with each invocation
     * potentially mutating the `accumulator` object. If `accumulator` is not
     * provided, a new object with the same `[[Prototype]]` will be used. The
     * iteratee is invoked with four arguments: (accumulator, value, key, object).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The custom accumulator value.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * _.transform([2, 3, 4], function(result, n) {
     *   result.push(n *= n);
     *   return n % 2 == 0;
     * }, []);
     * // => [4, 9]
     *
     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] }
     */
    function transform(object, iteratee, accumulator) {
      var isArr = isArray(object),
          isArrLike = isArr || isBuffer(object) || isTypedArray(object);

      iteratee = getIteratee(iteratee, 4);
      if (accumulator == null) {
        var Ctor = object && object.constructor;
        if (isArrLike) {
          accumulator = isArr ? new Ctor : [];
        }
        else if (isObject(object)) {
          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
        }
        else {
          accumulator = {};
        }
      }
      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
        return iteratee(accumulator, value, index, object);
      });
      return accumulator;
    }

    /**
     * Removes the property at `path` of `object`.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 7 } }] };
     * _.unset(object, 'a[0].b.c');
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     *
     * _.unset(object, ['a', '0', 'b', 'c']);
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     */
    function unset(object, path) {
      return object == null ? true : baseUnset(object, path);
    }

    /**
     * This method is like `_.set` except that accepts `updater` to produce the
     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
     * is invoked with one argument: (value).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.update(object, 'a[0].b.c', function(n) { return n * n; });
     * console.log(object.a[0].b.c);
     * // => 9
     *
     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
     * console.log(object.x[0].y.z);
     * // => 0
     */
    function update(object, path, updater) {
      return object == null ? object : baseUpdate(object, path, castFunction(updater));
    }

    /**
     * This method is like `_.update` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.updateWith(object, '[0][1]', _.constant('a'), Object);
     * // => { '0': { '1': 'a' } }
     */
    function updateWith(object, path, updater, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
    }

    /**
     * Creates an array of the own enumerable string keyed property values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.values(new Foo);
     * // => [1, 2] (iteration order is not guaranteed)
     *
     * _.values('hi');
     * // => ['h', 'i']
     */
    function values(object) {
      return object == null ? [] : baseValues(object, keys(object));
    }

    /**
     * Creates an array of the own and inherited enumerable string keyed property
     * values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.valuesIn(new Foo);
     * // => [1, 2, 3] (iteration order is not guaranteed)
     */
    function valuesIn(object) {
      return object == null ? [] : baseValues(object, keysIn(object));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Clamps `number` within the inclusive `lower` and `upper` bounds.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Number
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     * @example
     *
     * _.clamp(-10, -5, 5);
     * // => -5
     *
     * _.clamp(10, -5, 5);
     * // => 5
     */
    function clamp(number, lower, upper) {
      if (upper === undefined) {
        upper = lower;
        lower = undefined;
      }
      if (upper !== undefined) {
        upper = toNumber(upper);
        upper = upper === upper ? upper : 0;
      }
      if (lower !== undefined) {
        lower = toNumber(lower);
        lower = lower === lower ? lower : 0;
      }
      return baseClamp(toNumber(number), lower, upper);
    }

    /**
     * Checks if `n` is between `start` and up to, but not including, `end`. If
     * `end` is not specified, it's set to `start` with `start` then set to `0`.
     * If `start` is greater than `end` the params are swapped to support
     * negative ranges.
     *
     * @static
     * @memberOf _
     * @since 3.3.0
     * @category Number
     * @param {number} number The number to check.
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     * @see _.range, _.rangeRight
     * @example
     *
     * _.inRange(3, 2, 4);
     * // => true
     *
     * _.inRange(4, 8);
     * // => true
     *
     * _.inRange(4, 2);
     * // => false
     *
     * _.inRange(2, 2);
     * // => false
     *
     * _.inRange(1.2, 2);
     * // => true
     *
     * _.inRange(5.2, 4);
     * // => false
     *
     * _.inRange(-3, -2, -6);
     * // => true
     */
    function inRange(number, start, end) {
      start = toFinite(start);
      if (end === undefined) {
        end = start;
        start = 0;
      } else {
        end = toFinite(end);
      }
      number = toNumber(number);
      return baseInRange(number, start, end);
    }

    /**
     * Produces a random number between the inclusive `lower` and `upper` bounds.
     * If only one argument is provided a number between `0` and the given number
     * is returned. If `floating` is `true`, or either `lower` or `upper` are
     * floats, a floating-point number is returned instead of an integer.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Number
     * @param {number} [lower=0] The lower bound.
     * @param {number} [upper=1] The upper bound.
     * @param {boolean} [floating] Specify returning a floating-point number.
     * @returns {number} Returns the random number.
     * @example
     *
     * _.random(0, 5);
     * // => an integer between 0 and 5
     *
     * _.random(5);
     * // => also an integer between 0 and 5
     *
     * _.random(5, true);
     * // => a floating-point number between 0 and 5
     *
     * _.random(1.2, 5.2);
     * // => a floating-point number between 1.2 and 5.2
     */
    function random(lower, upper, floating) {
      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
        upper = floating = undefined;
      }
      if (floating === undefined) {
        if (typeof upper == 'boolean') {
          floating = upper;
          upper = undefined;
        }
        else if (typeof lower == 'boolean') {
          floating = lower;
          lower = undefined;
        }
      }
      if (lower === undefined && upper === undefined) {
        lower = 0;
        upper = 1;
      }
      else {
        lower = toFinite(lower);
        if (upper === undefined) {
          upper = lower;
          lower = 0;
        } else {
          upper = toFinite(upper);
        }
      }
      if (lower > upper) {
        var temp = lower;
        lower = upper;
        upper = temp;
      }
      if (floating || lower % 1 || upper % 1) {
        var rand = nativeRandom();
        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
      }
      return baseRandom(lower, upper);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the camel cased string.
     * @example
     *
     * _.camelCase('Foo Bar');
     * // => 'fooBar'
     *
     * _.camelCase('--foo-bar--');
     * // => 'fooBar'
     *
     * _.camelCase('__FOO_BAR__');
     * // => 'fooBar'
     */
    var camelCase = createCompounder(function(result, word, index) {
      word = word.toLowerCase();
      return result + (index ? capitalize(word) : word);
    });

    /**
     * Converts the first character of `string` to upper case and the remaining
     * to lower case.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to capitalize.
     * @returns {string} Returns the capitalized string.
     * @example
     *
     * _.capitalize('FRED');
     * // => 'Fred'
     */
    function capitalize(string) {
      return upperFirst(toString(string).toLowerCase());
    }

    /**
     * Deburrs `string` by converting
     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
     * letters to basic Latin letters and removing
     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to deburr.
     * @returns {string} Returns the deburred string.
     * @example
     *
     * _.deburr('déjà vu');
     * // => 'deja vu'
     */
    function deburr(string) {
      string = toString(string);
      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
    }

    /**
     * Checks if `string` ends with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=string.length] The position to search up to.
     * @returns {boolean} Returns `true` if `string` ends with `target`,
     *  else `false`.
     * @example
     *
     * _.endsWith('abc', 'c');
     * // => true
     *
     * _.endsWith('abc', 'b');
     * // => false
     *
     * _.endsWith('abc', 'b', 2);
     * // => true
     */
    function endsWith(string, target, position) {
      string = toString(string);
      target = baseToString(target);

      var length = string.length;
      position = position === undefined
        ? length
        : baseClamp(toInteger(position), 0, length);

      var end = position;
      position -= target.length;
      return position >= 0 && string.slice(position, end) == target;
    }

    /**
     * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
     * corresponding HTML entities.
     *
     * **Note:** No other characters are escaped. To escape additional
     * characters use a third-party library like [_he_](https://mths.be/he).
     *
     * Though the ">" character is escaped for symmetry, characters like
     * ">" and "/" don't need escaping in HTML and have no special meaning
     * unless they're part of a tag or unquoted attribute value. See
     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
     * (under "semi-related fun fact") for more details.
     *
     * When working with HTML you should always
     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
     * XSS vectors.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escape('fred, barney, & pebbles');
     * // => 'fred, barney, &amp; pebbles'
     */
    function escape(string) {
      string = toString(string);
      return (string && reHasUnescapedHtml.test(string))
        ? string.replace(reUnescapedHtml, escapeHtmlChar)
        : string;
    }

    /**
     * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
     * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escapeRegExp('[lodash](https://lodash.com/)');
     * // => '\[lodash\]\(https://lodash\.com/\)'
     */
    function escapeRegExp(string) {
      string = toString(string);
      return (string && reHasRegExpChar.test(string))
        ? string.replace(reRegExpChar, '\\$&')
        : string;
    }

    /**
     * Converts `string` to
     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the kebab cased string.
     * @example
     *
     * _.kebabCase('Foo Bar');
     * // => 'foo-bar'
     *
     * _.kebabCase('fooBar');
     * // => 'foo-bar'
     *
     * _.kebabCase('__FOO_BAR__');
     * // => 'foo-bar'
     */
    var kebabCase = createCompounder(function(result, word, index) {
      return result + (index ? '-' : '') + word.toLowerCase();
    });

    /**
     * Converts `string`, as space separated words, to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.lowerCase('--Foo-Bar--');
     * // => 'foo bar'
     *
     * _.lowerCase('fooBar');
     * // => 'foo bar'
     *
     * _.lowerCase('__FOO_BAR__');
     * // => 'foo bar'
     */
    var lowerCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toLowerCase();
    });

    /**
     * Converts the first character of `string` to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.lowerFirst('Fred');
     * // => 'fred'
     *
     * _.lowerFirst('FRED');
     * // => 'fRED'
     */
    var lowerFirst = createCaseFirst('toLowerCase');

    /**
     * Pads `string` on the left and right sides if it's shorter than `length`.
     * Padding characters are truncated if they can't be evenly divided by `length`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.pad('abc', 8);
     * // => '  abc   '
     *
     * _.pad('abc', 8, '_-');
     * // => '_-abc_-_'
     *
     * _.pad('abc', 3);
     * // => 'abc'
     */
    function pad(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      if (!length || strLength >= length) {
        return string;
      }
      var mid = (length - strLength) / 2;
      return (
        createPadding(nativeFloor(mid), chars) +
        string +
        createPadding(nativeCeil(mid), chars)
      );
    }

    /**
     * Pads `string` on the right side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padEnd('abc', 6);
     * // => 'abc   '
     *
     * _.padEnd('abc', 6, '_-');
     * // => 'abc_-_'
     *
     * _.padEnd('abc', 3);
     * // => 'abc'
     */
    function padEnd(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (string + createPadding(length - strLength, chars))
        : string;
    }

    /**
     * Pads `string` on the left side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padStart('abc', 6);
     * // => '   abc'
     *
     * _.padStart('abc', 6, '_-');
     * // => '_-_abc'
     *
     * _.padStart('abc', 3);
     * // => 'abc'
     */
    function padStart(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (createPadding(length - strLength, chars) + string)
        : string;
    }

    /**
     * Converts `string` to an integer of the specified radix. If `radix` is
     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
     * hexadecimal, in which case a `radix` of `16` is used.
     *
     * **Note:** This method aligns with the
     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category String
     * @param {string} string The string to convert.
     * @param {number} [radix=10] The radix to interpret `value` by.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.parseInt('08');
     * // => 8
     *
     * _.map(['6', '08', '10'], _.parseInt);
     * // => [6, 8, 10]
     */
    function parseInt(string, radix, guard) {
      if (guard || radix == null) {
        radix = 0;
      } else if (radix) {
        radix = +radix;
      }
      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
    }

    /**
     * Repeats the given string `n` times.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to repeat.
     * @param {number} [n=1] The number of times to repeat the string.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the repeated string.
     * @example
     *
     * _.repeat('*', 3);
     * // => '***'
     *
     * _.repeat('abc', 2);
     * // => 'abcabc'
     *
     * _.repeat('abc', 0);
     * // => ''
     */
    function repeat(string, n, guard) {
      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      return baseRepeat(toString(string), n);
    }

    /**
     * Replaces matches for `pattern` in `string` with `replacement`.
     *
     * **Note:** This method is based on
     * [`String#replace`](https://mdn.io/String/replace).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to modify.
     * @param {RegExp|string} pattern The pattern to replace.
     * @param {Function|string} replacement The match replacement.
     * @returns {string} Returns the modified string.
     * @example
     *
     * _.replace('Hi Fred', 'Fred', 'Barney');
     * // => 'Hi Barney'
     */
    function replace() {
      var args = arguments,
          string = toString(args[0]);

      return args.length < 3 ? string : string.replace(args[1], args[2]);
    }

    /**
     * Converts `string` to
     * [snake case](https://en.wikipedia.org/wiki/Snake_case).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the snake cased string.
     * @example
     *
     * _.snakeCase('Foo Bar');
     * // => 'foo_bar'
     *
     * _.snakeCase('fooBar');
     * // => 'foo_bar'
     *
     * _.snakeCase('--FOO-BAR--');
     * // => 'foo_bar'
     */
    var snakeCase = createCompounder(function(result, word, index) {
      return result + (index ? '_' : '') + word.toLowerCase();
    });

    /**
     * Splits `string` by `separator`.
     *
     * **Note:** This method is based on
     * [`String#split`](https://mdn.io/String/split).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to split.
     * @param {RegExp|string} separator The separator pattern to split by.
     * @param {number} [limit] The length to truncate results to.
     * @returns {Array} Returns the string segments.
     * @example
     *
     * _.split('a-b-c', '-', 2);
     * // => ['a', 'b']
     */
    function split(string, separator, limit) {
      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
        separator = limit = undefined;
      }
      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
      if (!limit) {
        return [];
      }
      string = toString(string);
      if (string && (
            typeof separator == 'string' ||
            (separator != null && !isRegExp(separator))
          )) {
        separator = baseToString(separator);
        if (!separator && hasUnicode(string)) {
          return castSlice(stringToArray(string), 0, limit);
        }
      }
      return string.split(separator, limit);
    }

    /**
     * Converts `string` to
     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
     *
     * @static
     * @memberOf _
     * @since 3.1.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the start cased string.
     * @example
     *
     * _.startCase('--foo-bar--');
     * // => 'Foo Bar'
     *
     * _.startCase('fooBar');
     * // => 'Foo Bar'
     *
     * _.startCase('__FOO_BAR__');
     * // => 'FOO BAR'
     */
    var startCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + upperFirst(word);
    });

    /**
     * Checks if `string` starts with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=0] The position to search from.
     * @returns {boolean} Returns `true` if `string` starts with `target`,
     *  else `false`.
     * @example
     *
     * _.startsWith('abc', 'a');
     * // => true
     *
     * _.startsWith('abc', 'b');
     * // => false
     *
     * _.startsWith('abc', 'b', 1);
     * // => true
     */
    function startsWith(string, target, position) {
      string = toString(string);
      position = position == null
        ? 0
        : baseClamp(toInteger(position), 0, string.length);

      target = baseToString(target);
      return string.slice(position, position + target.length) == target;
    }

    /**
     * Creates a compiled template function that can interpolate data properties
     * in "interpolate" delimiters, HTML-escape interpolated data properties in
     * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
     * properties may be accessed as free variables in the template. If a setting
     * object is given, it takes precedence over `_.templateSettings` values.
     *
     * **Note:** In the development build `_.template` utilizes
     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
     * for easier debugging.
     *
     * For more information on precompiling templates see
     * [lodash's custom builds documentation](https://lodash.com/custom-builds).
     *
     * For more information on Chrome extension sandboxes see
     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The template string.
     * @param {Object} [options={}] The options object.
     * @param {RegExp} [options.escape=_.templateSettings.escape]
     *  The HTML "escape" delimiter.
     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
     *  The "evaluate" delimiter.
     * @param {Object} [options.imports=_.templateSettings.imports]
     *  An object to import into the template as free variables.
     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
     *  The "interpolate" delimiter.
     * @param {string} [options.sourceURL='lodash.templateSources[n]']
     *  The sourceURL of the compiled template.
     * @param {string} [options.variable='obj']
     *  The data object variable name.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the compiled template function.
     * @example
     *
     * // Use the "interpolate" delimiter to create a compiled template.
     * var compiled = _.template('hello <%= user %>!');
     * compiled({ 'user': 'fred' });
     * // => 'hello fred!'
     *
     * // Use the HTML "escape" delimiter to escape data property values.
     * var compiled = _.template('<b><%- value %></b>');
     * compiled({ 'value': '<script>' });
     * // => '<b>&lt;script&gt;</b>'
     *
     * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the internal `print` function in "evaluate" delimiters.
     * var compiled = _.template('<% print("hello " + user); %>!');
     * compiled({ 'user': 'barney' });
     * // => 'hello barney!'
     *
     * // Use the ES template literal delimiter as an "interpolate" delimiter.
     * // Disable support by replacing the "interpolate" delimiter.
     * var compiled = _.template('hello ${ user }!');
     * compiled({ 'user': 'pebbles' });
     * // => 'hello pebbles!'
     *
     * // Use backslashes to treat delimiters as plain text.
     * var compiled = _.template('<%= "\\<%- value %\\>" %>');
     * compiled({ 'value': 'ignored' });
     * // => '<%- value %>'
     *
     * // Use the `imports` option to import `jQuery` as `jq`.
     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the `sourceURL` option to specify a custom sourceURL for the template.
     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
     * compiled(data);
     * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
     *
     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
     * compiled.source;
     * // => function(data) {
     * //   var __t, __p = '';
     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
     * //   return __p;
     * // }
     *
     * // Use custom template delimiters.
     * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
     * var compiled = _.template('hello {{ user }}!');
     * compiled({ 'user': 'mustache' });
     * // => 'hello mustache!'
     *
     * // Use the `source` property to inline compiled templates for meaningful
     * // line numbers in error messages and stack traces.
     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
     *   var JST = {\
     *     "main": ' + _.template(mainText).source + '\
     *   };\
     * ');
     */
    function template(string, options, guard) {
      // Based on John Resig's `tmpl` implementation
      // (http://ejohn.org/blog/javascript-micro-templating/)
      // and Laura Doktorova's doT.js (https://github.com/olado/doT).
      var settings = lodash.templateSettings;

      if (guard && isIterateeCall(string, options, guard)) {
        options = undefined;
      }
      string = toString(string);
      options = assignInWith({}, options, settings, customDefaultsAssignIn);

      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
          importsKeys = keys(imports),
          importsValues = baseValues(imports, importsKeys);

      var isEscaping,
          isEvaluating,
          index = 0,
          interpolate = options.interpolate || reNoMatch,
          source = "__p += '";

      // Compile the regexp to match each delimiter.
      var reDelimiters = RegExp(
        (options.escape || reNoMatch).source + '|' +
        interpolate.source + '|' +
        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
        (options.evaluate || reNoMatch).source + '|$'
      , 'g');

      // Use a sourceURL for easier debugging.
      var sourceURL = '//# sourceURL=' +
        ('sourceURL' in options
          ? options.sourceURL
          : ('lodash.templateSources[' + (++templateCounter) + ']')
        ) + '\n';

      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
        interpolateValue || (interpolateValue = esTemplateValue);

        // Escape characters that can't be included in string literals.
        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

        // Replace delimiters with snippets.
        if (escapeValue) {
          isEscaping = true;
          source += "' +\n__e(" + escapeValue + ") +\n'";
        }
        if (evaluateValue) {
          isEvaluating = true;
          source += "';\n" + evaluateValue + ";\n__p += '";
        }
        if (interpolateValue) {
          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
        }
        index = offset + match.length;

        // The JS engine embedded in Adobe products needs `match` returned in
        // order to produce the correct `offset` value.
        return match;
      });

      source += "';\n";

      // If `variable` is not specified wrap a with-statement around the generated
      // code to add the data object to the top of the scope chain.
      var variable = options.variable;
      if (!variable) {
        source = 'with (obj) {\n' + source + '\n}\n';
      }
      // Cleanup code by stripping empty strings.
      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
        .replace(reEmptyStringMiddle, '$1')
        .replace(reEmptyStringTrailing, '$1;');

      // Frame code as the function body.
      source = 'function(' + (variable || 'obj') + ') {\n' +
        (variable
          ? ''
          : 'obj || (obj = {});\n'
        ) +
        "var __t, __p = ''" +
        (isEscaping
           ? ', __e = _.escape'
           : ''
        ) +
        (isEvaluating
          ? ', __j = Array.prototype.join;\n' +
            "function print() { __p += __j.call(arguments, '') }\n"
          : ';\n'
        ) +
        source +
        'return __p\n}';

      var result = attempt(function() {
        return Function(importsKeys, sourceURL + 'return ' + source)
          .apply(undefined, importsValues);
      });

      // Provide the compiled function's source by its `toString` method or
      // the `source` property as a convenience for inlining compiled templates.
      result.source = source;
      if (isError(result)) {
        throw result;
      }
      return result;
    }

    /**
     * Converts `string`, as a whole, to lower case just like
     * [String#toLowerCase](https://mdn.io/toLowerCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.toLower('--Foo-Bar--');
     * // => '--foo-bar--'
     *
     * _.toLower('fooBar');
     * // => 'foobar'
     *
     * _.toLower('__FOO_BAR__');
     * // => '__foo_bar__'
     */
    function toLower(value) {
      return toString(value).toLowerCase();
    }

    /**
     * Converts `string`, as a whole, to upper case just like
     * [String#toUpperCase](https://mdn.io/toUpperCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.toUpper('--foo-bar--');
     * // => '--FOO-BAR--'
     *
     * _.toUpper('fooBar');
     * // => 'FOOBAR'
     *
     * _.toUpper('__foo_bar__');
     * // => '__FOO_BAR__'
     */
    function toUpper(value) {
      return toString(value).toUpperCase();
    }

    /**
     * Removes leading and trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trim('  abc  ');
     * // => 'abc'
     *
     * _.trim('-_-abc-_-', '_-');
     * // => 'abc'
     *
     * _.map(['  foo  ', '  bar  '], _.trim);
     * // => ['foo', 'bar']
     */
    function trim(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrim, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          chrSymbols = stringToArray(chars),
          start = charsStartIndex(strSymbols, chrSymbols),
          end = charsEndIndex(strSymbols, chrSymbols) + 1;

      return castSlice(strSymbols, start, end).join('');
    }

    /**
     * Removes trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimEnd('  abc  ');
     * // => '  abc'
     *
     * _.trimEnd('-_-abc-_-', '_-');
     * // => '-_-abc'
     */
    function trimEnd(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimEnd, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

      return castSlice(strSymbols, 0, end).join('');
    }

    /**
     * Removes leading whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimStart('  abc  ');
     * // => 'abc  '
     *
     * _.trimStart('-_-abc-_-', '_-');
     * // => 'abc-_-'
     */
    function trimStart(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimStart, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          start = charsStartIndex(strSymbols, stringToArray(chars));

      return castSlice(strSymbols, start).join('');
    }

    /**
     * Truncates `string` if it's longer than the given maximum string length.
     * The last characters of the truncated string are replaced with the omission
     * string which defaults to "...".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to truncate.
     * @param {Object} [options={}] The options object.
     * @param {number} [options.length=30] The maximum string length.
     * @param {string} [options.omission='...'] The string to indicate text is omitted.
     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
     * @returns {string} Returns the truncated string.
     * @example
     *
     * _.truncate('hi-diddly-ho there, neighborino');
     * // => 'hi-diddly-ho there, neighbo...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': ' '
     * });
     * // => 'hi-diddly-ho there,...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': /,? +/
     * });
     * // => 'hi-diddly-ho there...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'omission': ' [...]'
     * });
     * // => 'hi-diddly-ho there, neig [...]'
     */
    function truncate(string, options) {
      var length = DEFAULT_TRUNC_LENGTH,
          omission = DEFAULT_TRUNC_OMISSION;

      if (isObject(options)) {
        var separator = 'separator' in options ? options.separator : separator;
        length = 'length' in options ? toInteger(options.length) : length;
        omission = 'omission' in options ? baseToString(options.omission) : omission;
      }
      string = toString(string);

      var strLength = string.length;
      if (hasUnicode(string)) {
        var strSymbols = stringToArray(string);
        strLength = strSymbols.length;
      }
      if (length >= strLength) {
        return string;
      }
      var end = length - stringSize(omission);
      if (end < 1) {
        return omission;
      }
      var result = strSymbols
        ? castSlice(strSymbols, 0, end).join('')
        : string.slice(0, end);

      if (separator === undefined) {
        return result + omission;
      }
      if (strSymbols) {
        end += (result.length - end);
      }
      if (isRegExp(separator)) {
        if (string.slice(end).search(separator)) {
          var match,
              substring = result;

          if (!separator.global) {
            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
          }
          separator.lastIndex = 0;
          while ((match = separator.exec(substring))) {
            var newEnd = match.index;
          }
          result = result.slice(0, newEnd === undefined ? end : newEnd);
        }
      } else if (string.indexOf(baseToString(separator), end) != end) {
        var index = result.lastIndexOf(separator);
        if (index > -1) {
          result = result.slice(0, index);
        }
      }
      return result + omission;
    }

    /**
     * The inverse of `_.escape`; this method converts the HTML entities
     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
     * their corresponding characters.
     *
     * **Note:** No other HTML entities are unescaped. To unescape additional
     * HTML entities use a third-party library like [_he_](https://mths.be/he).
     *
     * @static
     * @memberOf _
     * @since 0.6.0
     * @category String
     * @param {string} [string=''] The string to unescape.
     * @returns {string} Returns the unescaped string.
     * @example
     *
     * _.unescape('fred, barney, &amp; pebbles');
     * // => 'fred, barney, & pebbles'
     */
    function unescape(string) {
      string = toString(string);
      return (string && reHasEscapedHtml.test(string))
        ? string.replace(reEscapedHtml, unescapeHtmlChar)
        : string;
    }

    /**
     * Converts `string`, as space separated words, to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.upperCase('--foo-bar');
     * // => 'FOO BAR'
     *
     * _.upperCase('fooBar');
     * // => 'FOO BAR'
     *
     * _.upperCase('__foo_bar__');
     * // => 'FOO BAR'
     */
    var upperCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toUpperCase();
    });

    /**
     * Converts the first character of `string` to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.upperFirst('fred');
     * // => 'Fred'
     *
     * _.upperFirst('FRED');
     * // => 'FRED'
     */
    var upperFirst = createCaseFirst('toUpperCase');

    /**
     * Splits `string` into an array of its words.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {RegExp|string} [pattern] The pattern to match words.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the words of `string`.
     * @example
     *
     * _.words('fred, barney, & pebbles');
     * // => ['fred', 'barney', 'pebbles']
     *
     * _.words('fred, barney, & pebbles', /[^, ]+/g);
     * // => ['fred', 'barney', '&', 'pebbles']
     */
    function words(string, pattern, guard) {
      string = toString(string);
      pattern = guard ? undefined : pattern;

      if (pattern === undefined) {
        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
      }
      return string.match(pattern) || [];
    }

    /*------------------------------------------------------------------------*/

    /**
     * Attempts to invoke `func`, returning either the result or the caught error
     * object. Any additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Function} func The function to attempt.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {*} Returns the `func` result or error object.
     * @example
     *
     * // Avoid throwing errors for invalid selectors.
     * var elements = _.attempt(function(selector) {
     *   return document.querySelectorAll(selector);
     * }, '>_>');
     *
     * if (_.isError(elements)) {
     *   elements = [];
     * }
     */
    var attempt = baseRest(function(func, args) {
      try {
        return apply(func, undefined, args);
      } catch (e) {
        return isError(e) ? e : new Error(e);
      }
    });

    /**
     * Binds methods of an object to the object itself, overwriting the existing
     * method.
     *
     * **Note:** This method doesn't set the "length" property of bound functions.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {...(string|string[])} methodNames The object method names to bind.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var view = {
     *   'label': 'docs',
     *   'click': function() {
     *     console.log('clicked ' + this.label);
     *   }
     * };
     *
     * _.bindAll(view, ['click']);
     * jQuery(element).on('click', view.click);
     * // => Logs 'clicked docs' when clicked.
     */
    var bindAll = flatRest(function(object, methodNames) {
      arrayEach(methodNames, function(key) {
        key = toKey(key);
        baseAssignValue(object, key, bind(object[key], object));
      });
      return object;
    });

    /**
     * Creates a function that iterates over `pairs` and invokes the corresponding
     * function of the first predicate to return truthy. The predicate-function
     * pairs are invoked with the `this` binding and arguments of the created
     * function.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Array} pairs The predicate-function pairs.
     * @returns {Function} Returns the new composite function.
     * @example
     *
     * var func = _.cond([
     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
     *   [_.stubTrue,                      _.constant('no match')]
     * ]);
     *
     * func({ 'a': 1, 'b': 2 });
     * // => 'matches A'
     *
     * func({ 'a': 0, 'b': 1 });
     * // => 'matches B'
     *
     * func({ 'a': '1', 'b': '2' });
     * // => 'no match'
     */
    function cond(pairs) {
      var length = pairs == null ? 0 : pairs.length,
          toIteratee = getIteratee();

      pairs = !length ? [] : arrayMap(pairs, function(pair) {
        if (typeof pair[1] != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        return [toIteratee(pair[0]), pair[1]];
      });

      return baseRest(function(args) {
        var index = -1;
        while (++index < length) {
          var pair = pairs[index];
          if (apply(pair[0], this, args)) {
            return apply(pair[1], this, args);
          }
        }
      });
    }

    /**
     * Creates a function that invokes the predicate properties of `source` with
     * the corresponding property values of a given object, returning `true` if
     * all predicates return truthy, else `false`.
     *
     * **Note:** The created function is equivalent to `_.conformsTo` with
     * `source` partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 2, 'b': 1 },
     *   { 'a': 1, 'b': 2 }
     * ];
     *
     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
     * // => [{ 'a': 1, 'b': 2 }]
     */
    function conforms(source) {
      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new constant function.
     * @example
     *
     * var objects = _.times(2, _.constant({ 'a': 1 }));
     *
     * console.log(objects);
     * // => [{ 'a': 1 }, { 'a': 1 }]
     *
     * console.log(objects[0] === objects[1]);
     * // => true
     */
    function constant(value) {
      return function() {
        return value;
      };
    }

    /**
     * Checks `value` to determine whether a default value should be returned in
     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
     * or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Util
     * @param {*} value The value to check.
     * @param {*} defaultValue The default value.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * _.defaultTo(1, 10);
     * // => 1
     *
     * _.defaultTo(undefined, 10);
     * // => 10
     */
    function defaultTo(value, defaultValue) {
      return (value == null || value !== value) ? defaultValue : value;
    }

    /**
     * Creates a function that returns the result of invoking the given functions
     * with the `this` binding of the created function, where each successive
     * invocation is supplied the return value of the previous.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flowRight
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flow([_.add, square]);
     * addSquare(1, 2);
     * // => 9
     */
    var flow = createFlow();

    /**
     * This method is like `_.flow` except that it creates a function that
     * invokes the given functions from right to left.
     *
     * @static
     * @since 3.0.0
     * @memberOf _
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flow
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flowRight([square, _.add]);
     * addSquare(1, 2);
     * // => 9
     */
    var flowRight = createFlow(true);

    /**
     * This method returns the first argument it receives.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'a': 1 };
     *
     * console.log(_.identity(object) === object);
     * // => true
     */
    function identity(value) {
      return value;
    }

    /**
     * Creates a function that invokes `func` with the arguments of the created
     * function. If `func` is a property name, the created function returns the
     * property value for a given element. If `func` is an array or object, the
     * created function returns `true` for elements that contain the equivalent
     * source properties, otherwise it returns `false`.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Util
     * @param {*} [func=_.identity] The value to convert to a callback.
     * @returns {Function} Returns the callback.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, _.iteratee(['user', 'fred']));
     * // => [{ 'user': 'fred', 'age': 40 }]
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, _.iteratee('user'));
     * // => ['barney', 'fred']
     *
     * // Create custom iteratee shorthands.
     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
     *     return func.test(string);
     *   };
     * });
     *
     * _.filter(['abc', 'def'], /ef/);
     * // => ['def']
     */
    function iteratee(func) {
      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between a given
     * object and `source`, returning `true` if the given object has equivalent
     * property values, else `false`.
     *
     * **Note:** The created function is equivalent to `_.isMatch` with `source`
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
     */
    function matches(source) {
      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between the
     * value at `path` of a given object to `srcValue`, returning `true` if the
     * object value is equivalent, else `false`.
     *
     * **Note:** Partial comparisons will match empty array and empty object
     * `srcValue` values against any array or object value, respectively. See
     * `_.isEqual` for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.find(objects, _.matchesProperty('a', 4));
     * // => { 'a': 4, 'b': 5, 'c': 6 }
     */
    function matchesProperty(path, srcValue) {
      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that invokes the method at `path` of a given object.
     * Any additional arguments are provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': _.constant(2) } },
     *   { 'a': { 'b': _.constant(1) } }
     * ];
     *
     * _.map(objects, _.method('a.b'));
     * // => [2, 1]
     *
     * _.map(objects, _.method(['a', 'b']));
     * // => [2, 1]
     */
    var method = baseRest(function(path, args) {
      return function(object) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * The opposite of `_.method`; this method creates a function that invokes
     * the method at a given path of `object`. Any additional arguments are
     * provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Object} object The object to query.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var array = _.times(3, _.constant),
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.methodOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
     * // => [2, 0]
     */
    var methodOf = baseRest(function(object, args) {
      return function(path) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * Adds all own enumerable string keyed function properties of a source
     * object to the destination object. If `object` is a function, then methods
     * are added to its prototype as well.
     *
     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
     * avoid conflicts caused by modifying the original.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Function|Object} [object=lodash] The destination object.
     * @param {Object} source The object of functions to add.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
     * @returns {Function|Object} Returns `object`.
     * @example
     *
     * function vowels(string) {
     *   return _.filter(string, function(v) {
     *     return /[aeiou]/i.test(v);
     *   });
     * }
     *
     * _.mixin({ 'vowels': vowels });
     * _.vowels('fred');
     * // => ['e']
     *
     * _('fred').vowels().value();
     * // => ['e']
     *
     * _.mixin({ 'vowels': vowels }, { 'chain': false });
     * _('fred').vowels();
     * // => ['e']
     */
    function mixin(object, source, options) {
      var props = keys(source),
          methodNames = baseFunctions(source, props);

      if (options == null &&
          !(isObject(source) && (methodNames.length || !props.length))) {
        options = source;
        source = object;
        object = this;
        methodNames = baseFunctions(source, keys(source));
      }
      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
          isFunc = isFunction(object);

      arrayEach(methodNames, function(methodName) {
        var func = source[methodName];
        object[methodName] = func;
        if (isFunc) {
          object.prototype[methodName] = function() {
            var chainAll = this.__chain__;
            if (chain || chainAll) {
              var result = object(this.__wrapped__),
                  actions = result.__actions__ = copyArray(this.__actions__);

              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
              result.__chain__ = chainAll;
              return result;
            }
            return func.apply(object, arrayPush([this.value()], arguments));
          };
        }
      });

      return object;
    }

    /**
     * Reverts the `_` variable to its previous value and returns a reference to
     * the `lodash` function.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @returns {Function} Returns the `lodash` function.
     * @example
     *
     * var lodash = _.noConflict();
     */
    function noConflict() {
      if (root._ === this) {
        root._ = oldDash;
      }
      return this;
    }

    /**
     * This method returns `undefined`.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Util
     * @example
     *
     * _.times(2, _.noop);
     * // => [undefined, undefined]
     */
    function noop() {
      // No operation performed.
    }

    /**
     * Creates a function that gets the argument at index `n`. If `n` is negative,
     * the nth argument from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [n=0] The index of the argument to return.
     * @returns {Function} Returns the new pass-thru function.
     * @example
     *
     * var func = _.nthArg(1);
     * func('a', 'b', 'c', 'd');
     * // => 'b'
     *
     * var func = _.nthArg(-2);
     * func('a', 'b', 'c', 'd');
     * // => 'c'
     */
    function nthArg(n) {
      n = toInteger(n);
      return baseRest(function(args) {
        return baseNth(args, n);
      });
    }

    /**
     * Creates a function that invokes `iteratees` with the arguments it receives
     * and returns their results.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to invoke.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.over([Math.max, Math.min]);
     *
     * func(1, 2, 3, 4);
     * // => [4, 1]
     */
    var over = createOver(arrayMap);

    /**
     * Creates a function that checks if **all** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overEvery([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => false
     *
     * func(NaN);
     * // => false
     */
    var overEvery = createOver(arrayEvery);

    /**
     * Creates a function that checks if **any** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overSome([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => true
     *
     * func(NaN);
     * // => false
     */
    var overSome = createOver(arraySome);

    /**
     * Creates a function that returns the value at `path` of a given object.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': 2 } },
     *   { 'a': { 'b': 1 } }
     * ];
     *
     * _.map(objects, _.property('a.b'));
     * // => [2, 1]
     *
     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
     * // => [1, 2]
     */
    function property(path) {
      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
    }

    /**
     * The opposite of `_.property`; this method creates a function that returns
     * the value at a given path of `object`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} object The object to query.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var array = [0, 1, 2],
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
     * // => [2, 0]
     */
    function propertyOf(object) {
      return function(path) {
        return object == null ? undefined : baseGet(object, path);
      };
    }

    /**
     * Creates an array of numbers (positive and/or negative) progressing from
     * `start` up to, but not including, `end`. A step of `-1` is used if a negative
     * `start` is specified without an `end` or `step`. If `end` is not specified,
     * it's set to `start` with `start` then set to `0`.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.rangeRight
     * @example
     *
     * _.range(4);
     * // => [0, 1, 2, 3]
     *
     * _.range(-4);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 5);
     * // => [1, 2, 3, 4]
     *
     * _.range(0, 20, 5);
     * // => [0, 5, 10, 15]
     *
     * _.range(0, -4, -1);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.range(0);
     * // => []
     */
    var range = createRange();

    /**
     * This method is like `_.range` except that it populates values in
     * descending order.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.range
     * @example
     *
     * _.rangeRight(4);
     * // => [3, 2, 1, 0]
     *
     * _.rangeRight(-4);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 5);
     * // => [4, 3, 2, 1]
     *
     * _.rangeRight(0, 20, 5);
     * // => [15, 10, 5, 0]
     *
     * _.rangeRight(0, -4, -1);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.rangeRight(0);
     * // => []
     */
    var rangeRight = createRange(true);

    /**
     * This method returns a new empty array.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Array} Returns the new empty array.
     * @example
     *
     * var arrays = _.times(2, _.stubArray);
     *
     * console.log(arrays);
     * // => [[], []]
     *
     * console.log(arrays[0] === arrays[1]);
     * // => false
     */
    function stubArray() {
      return [];
    }

    /**
     * This method returns `false`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `false`.
     * @example
     *
     * _.times(2, _.stubFalse);
     * // => [false, false]
     */
    function stubFalse() {
      return false;
    }

    /**
     * This method returns a new empty object.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Object} Returns the new empty object.
     * @example
     *
     * var objects = _.times(2, _.stubObject);
     *
     * console.log(objects);
     * // => [{}, {}]
     *
     * console.log(objects[0] === objects[1]);
     * // => false
     */
    function stubObject() {
      return {};
    }

    /**
     * This method returns an empty string.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {string} Returns the empty string.
     * @example
     *
     * _.times(2, _.stubString);
     * // => ['', '']
     */
    function stubString() {
      return '';
    }

    /**
     * This method returns `true`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `true`.
     * @example
     *
     * _.times(2, _.stubTrue);
     * // => [true, true]
     */
    function stubTrue() {
      return true;
    }

    /**
     * Invokes the iteratee `n` times, returning an array of the results of
     * each invocation. The iteratee is invoked with one argument; (index).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.times(3, String);
     * // => ['0', '1', '2']
     *
     *  _.times(4, _.constant(0));
     * // => [0, 0, 0, 0]
     */
    function times(n, iteratee) {
      n = toInteger(n);
      if (n < 1 || n > MAX_SAFE_INTEGER) {
        return [];
      }
      var index = MAX_ARRAY_LENGTH,
          length = nativeMin(n, MAX_ARRAY_LENGTH);

      iteratee = getIteratee(iteratee);
      n -= MAX_ARRAY_LENGTH;

      var result = baseTimes(length, iteratee);
      while (++index < n) {
        iteratee(index);
      }
      return result;
    }

    /**
     * Converts `value` to a property path array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {*} value The value to convert.
     * @returns {Array} Returns the new property path array.
     * @example
     *
     * _.toPath('a.b.c');
     * // => ['a', 'b', 'c']
     *
     * _.toPath('a[0].b.c');
     * // => ['a', '0', 'b', 'c']
     */
    function toPath(value) {
      if (isArray(value)) {
        return arrayMap(value, toKey);
      }
      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
    }

    /**
     * Generates a unique ID. If `prefix` is given, the ID is appended to it.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {string} [prefix=''] The value to prefix the ID with.
     * @returns {string} Returns the unique ID.
     * @example
     *
     * _.uniqueId('contact_');
     * // => 'contact_104'
     *
     * _.uniqueId();
     * // => '105'
     */
    function uniqueId(prefix) {
      var id = ++idCounter;
      return toString(prefix) + id;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Adds two numbers.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {number} augend The first number in an addition.
     * @param {number} addend The second number in an addition.
     * @returns {number} Returns the total.
     * @example
     *
     * _.add(6, 4);
     * // => 10
     */
    var add = createMathOperation(function(augend, addend) {
      return augend + addend;
    }, 0);

    /**
     * Computes `number` rounded up to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round up.
     * @param {number} [precision=0] The precision to round up to.
     * @returns {number} Returns the rounded up number.
     * @example
     *
     * _.ceil(4.006);
     * // => 5
     *
     * _.ceil(6.004, 2);
     * // => 6.01
     *
     * _.ceil(6040, -2);
     * // => 6100
     */
    var ceil = createRound('ceil');

    /**
     * Divide two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} dividend The first number in a division.
     * @param {number} divisor The second number in a division.
     * @returns {number} Returns the quotient.
     * @example
     *
     * _.divide(6, 4);
     * // => 1.5
     */
    var divide = createMathOperation(function(dividend, divisor) {
      return dividend / divisor;
    }, 1);

    /**
     * Computes `number` rounded down to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round down.
     * @param {number} [precision=0] The precision to round down to.
     * @returns {number} Returns the rounded down number.
     * @example
     *
     * _.floor(4.006);
     * // => 4
     *
     * _.floor(0.046, 2);
     * // => 0.04
     *
     * _.floor(4060, -2);
     * // => 4000
     */
    var floor = createRound('floor');

    /**
     * Computes the maximum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * _.max([4, 2, 8, 6]);
     * // => 8
     *
     * _.max([]);
     * // => undefined
     */
    function max(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseGt)
        : undefined;
    }

    /**
     * This method is like `_.max` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.maxBy(objects, function(o) { return o.n; });
     * // => { 'n': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.maxBy(objects, 'n');
     * // => { 'n': 2 }
     */
    function maxBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
        : undefined;
    }

    /**
     * Computes the mean of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the mean.
     * @example
     *
     * _.mean([4, 2, 8, 6]);
     * // => 5
     */
    function mean(array) {
      return baseMean(array, identity);
    }

    /**
     * This method is like `_.mean` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be averaged.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the mean.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.meanBy(objects, function(o) { return o.n; });
     * // => 5
     *
     * // The `_.property` iteratee shorthand.
     * _.meanBy(objects, 'n');
     * // => 5
     */
    function meanBy(array, iteratee) {
      return baseMean(array, getIteratee(iteratee, 2));
    }

    /**
     * Computes the minimum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * _.min([4, 2, 8, 6]);
     * // => 2
     *
     * _.min([]);
     * // => undefined
     */
    function min(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseLt)
        : undefined;
    }

    /**
     * This method is like `_.min` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.minBy(objects, function(o) { return o.n; });
     * // => { 'n': 1 }
     *
     * // The `_.property` iteratee shorthand.
     * _.minBy(objects, 'n');
     * // => { 'n': 1 }
     */
    function minBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
        : undefined;
    }

    /**
     * Multiply two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} multiplier The first number in a multiplication.
     * @param {number} multiplicand The second number in a multiplication.
     * @returns {number} Returns the product.
     * @example
     *
     * _.multiply(6, 4);
     * // => 24
     */
    var multiply = createMathOperation(function(multiplier, multiplicand) {
      return multiplier * multiplicand;
    }, 1);

    /**
     * Computes `number` rounded to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round.
     * @param {number} [precision=0] The precision to round to.
     * @returns {number} Returns the rounded number.
     * @example
     *
     * _.round(4.006);
     * // => 4
     *
     * _.round(4.006, 2);
     * // => 4.01
     *
     * _.round(4060, -2);
     * // => 4100
     */
    var round = createRound('round');

    /**
     * Subtract two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {number} minuend The first number in a subtraction.
     * @param {number} subtrahend The second number in a subtraction.
     * @returns {number} Returns the difference.
     * @example
     *
     * _.subtract(6, 4);
     * // => 2
     */
    var subtract = createMathOperation(function(minuend, subtrahend) {
      return minuend - subtrahend;
    }, 0);

    /**
     * Computes the sum of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the sum.
     * @example
     *
     * _.sum([4, 2, 8, 6]);
     * // => 20
     */
    function sum(array) {
      return (array && array.length)
        ? baseSum(array, identity)
        : 0;
    }

    /**
     * This method is like `_.sum` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be summed.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the sum.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.sumBy(objects, function(o) { return o.n; });
     * // => 20
     *
     * // The `_.property` iteratee shorthand.
     * _.sumBy(objects, 'n');
     * // => 20
     */
    function sumBy(array, iteratee) {
      return (array && array.length)
        ? baseSum(array, getIteratee(iteratee, 2))
        : 0;
    }

    /*------------------------------------------------------------------------*/

    // Add methods that return wrapped values in chain sequences.
    lodash.after = after;
    lodash.ary = ary;
    lodash.assign = assign;
    lodash.assignIn = assignIn;
    lodash.assignInWith = assignInWith;
    lodash.assignWith = assignWith;
    lodash.at = at;
    lodash.before = before;
    lodash.bind = bind;
    lodash.bindAll = bindAll;
    lodash.bindKey = bindKey;
    lodash.castArray = castArray;
    lodash.chain = chain;
    lodash.chunk = chunk;
    lodash.compact = compact;
    lodash.concat = concat;
    lodash.cond = cond;
    lodash.conforms = conforms;
    lodash.constant = constant;
    lodash.countBy = countBy;
    lodash.create = create;
    lodash.curry = curry;
    lodash.curryRight = curryRight;
    lodash.debounce = debounce;
    lodash.defaults = defaults;
    lodash.defaultsDeep = defaultsDeep;
    lodash.defer = defer;
    lodash.delay = delay;
    lodash.difference = difference;
    lodash.differenceBy = differenceBy;
    lodash.differenceWith = differenceWith;
    lodash.drop = drop;
    lodash.dropRight = dropRight;
    lodash.dropRightWhile = dropRightWhile;
    lodash.dropWhile = dropWhile;
    lodash.fill = fill;
    lodash.filter = filter;
    lodash.flatMap = flatMap;
    lodash.flatMapDeep = flatMapDeep;
    lodash.flatMapDepth = flatMapDepth;
    lodash.flatten = flatten;
    lodash.flattenDeep = flattenDeep;
    lodash.flattenDepth = flattenDepth;
    lodash.flip = flip;
    lodash.flow = flow;
    lodash.flowRight = flowRight;
    lodash.fromPairs = fromPairs;
    lodash.functions = functions;
    lodash.functionsIn = functionsIn;
    lodash.groupBy = groupBy;
    lodash.initial = initial;
    lodash.intersection = intersection;
    lodash.intersectionBy = intersectionBy;
    lodash.intersectionWith = intersectionWith;
    lodash.invert = invert;
    lodash.invertBy = invertBy;
    lodash.invokeMap = invokeMap;
    lodash.iteratee = iteratee;
    lodash.keyBy = keyBy;
    lodash.keys = keys;
    lodash.keysIn = keysIn;
    lodash.map = map;
    lodash.mapKeys = mapKeys;
    lodash.mapValues = mapValues;
    lodash.matches = matches;
    lodash.matchesProperty = matchesProperty;
    lodash.memoize = memoize;
    lodash.merge = merge;
    lodash.mergeWith = mergeWith;
    lodash.method = method;
    lodash.methodOf = methodOf;
    lodash.mixin = mixin;
    lodash.negate = negate;
    lodash.nthArg = nthArg;
    lodash.omit = omit;
    lodash.omitBy = omitBy;
    lodash.once = once;
    lodash.orderBy = orderBy;
    lodash.over = over;
    lodash.overArgs = overArgs;
    lodash.overEvery = overEvery;
    lodash.overSome = overSome;
    lodash.partial = partial;
    lodash.partialRight = partialRight;
    lodash.partition = partition;
    lodash.pick = pick;
    lodash.pickBy = pickBy;
    lodash.property = property;
    lodash.propertyOf = propertyOf;
    lodash.pull = pull;
    lodash.pullAll = pullAll;
    lodash.pullAllBy = pullAllBy;
    lodash.pullAllWith = pullAllWith;
    lodash.pullAt = pullAt;
    lodash.range = range;
    lodash.rangeRight = rangeRight;
    lodash.rearg = rearg;
    lodash.reject = reject;
    lodash.remove = remove;
    lodash.rest = rest;
    lodash.reverse = reverse;
    lodash.sampleSize = sampleSize;
    lodash.set = set;
    lodash.setWith = setWith;
    lodash.shuffle = shuffle;
    lodash.slice = slice;
    lodash.sortBy = sortBy;
    lodash.sortedUniq = sortedUniq;
    lodash.sortedUniqBy = sortedUniqBy;
    lodash.split = split;
    lodash.spread = spread;
    lodash.tail = tail;
    lodash.take = take;
    lodash.takeRight = takeRight;
    lodash.takeRightWhile = takeRightWhile;
    lodash.takeWhile = takeWhile;
    lodash.tap = tap;
    lodash.throttle = throttle;
    lodash.thru = thru;
    lodash.toArray = toArray;
    lodash.toPairs = toPairs;
    lodash.toPairsIn = toPairsIn;
    lodash.toPath = toPath;
    lodash.toPlainObject = toPlainObject;
    lodash.transform = transform;
    lodash.unary = unary;
    lodash.union = union;
    lodash.unionBy = unionBy;
    lodash.unionWith = unionWith;
    lodash.uniq = uniq;
    lodash.uniqBy = uniqBy;
    lodash.uniqWith = uniqWith;
    lodash.unset = unset;
    lodash.unzip = unzip;
    lodash.unzipWith = unzipWith;
    lodash.update = update;
    lodash.updateWith = updateWith;
    lodash.values = values;
    lodash.valuesIn = valuesIn;
    lodash.without = without;
    lodash.words = words;
    lodash.wrap = wrap;
    lodash.xor = xor;
    lodash.xorBy = xorBy;
    lodash.xorWith = xorWith;
    lodash.zip = zip;
    lodash.zipObject = zipObject;
    lodash.zipObjectDeep = zipObjectDeep;
    lodash.zipWith = zipWith;

    // Add aliases.
    lodash.entries = toPairs;
    lodash.entriesIn = toPairsIn;
    lodash.extend = assignIn;
    lodash.extendWith = assignInWith;

    // Add methods to `lodash.prototype`.
    mixin(lodash, lodash);

    /*------------------------------------------------------------------------*/

    // Add methods that return unwrapped values in chain sequences.
    lodash.add = add;
    lodash.attempt = attempt;
    lodash.camelCase = camelCase;
    lodash.capitalize = capitalize;
    lodash.ceil = ceil;
    lodash.clamp = clamp;
    lodash.clone = clone;
    lodash.cloneDeep = cloneDeep;
    lodash.cloneDeepWith = cloneDeepWith;
    lodash.cloneWith = cloneWith;
    lodash.conformsTo = conformsTo;
    lodash.deburr = deburr;
    lodash.defaultTo = defaultTo;
    lodash.divide = divide;
    lodash.endsWith = endsWith;
    lodash.eq = eq;
    lodash.escape = escape;
    lodash.escapeRegExp = escapeRegExp;
    lodash.every = every;
    lodash.find = find;
    lodash.findIndex = findIndex;
    lodash.findKey = findKey;
    lodash.findLast = findLast;
    lodash.findLastIndex = findLastIndex;
    lodash.findLastKey = findLastKey;
    lodash.floor = floor;
    lodash.forEach = forEach;
    lodash.forEachRight = forEachRight;
    lodash.forIn = forIn;
    lodash.forInRight = forInRight;
    lodash.forOwn = forOwn;
    lodash.forOwnRight = forOwnRight;
    lodash.get = get;
    lodash.gt = gt;
    lodash.gte = gte;
    lodash.has = has;
    lodash.hasIn = hasIn;
    lodash.head = head;
    lodash.identity = identity;
    lodash.includes = includes;
    lodash.indexOf = indexOf;
    lodash.inRange = inRange;
    lodash.invoke = invoke;
    lodash.isArguments = isArguments;
    lodash.isArray = isArray;
    lodash.isArrayBuffer = isArrayBuffer;
    lodash.isArrayLike = isArrayLike;
    lodash.isArrayLikeObject = isArrayLikeObject;
    lodash.isBoolean = isBoolean;
    lodash.isBuffer = isBuffer;
    lodash.isDate = isDate;
    lodash.isElement = isElement;
    lodash.isEmpty = isEmpty;
    lodash.isEqual = isEqual;
    lodash.isEqualWith = isEqualWith;
    lodash.isError = isError;
    lodash.isFinite = isFinite;
    lodash.isFunction = isFunction;
    lodash.isInteger = isInteger;
    lodash.isLength = isLength;
    lodash.isMap = isMap;
    lodash.isMatch = isMatch;
    lodash.isMatchWith = isMatchWith;
    lodash.isNaN = isNaN;
    lodash.isNative = isNative;
    lodash.isNil = isNil;
    lodash.isNull = isNull;
    lodash.isNumber = isNumber;
    lodash.isObject = isObject;
    lodash.isObjectLike = isObjectLike;
    lodash.isPlainObject = isPlainObject;
    lodash.isRegExp = isRegExp;
    lodash.isSafeInteger = isSafeInteger;
    lodash.isSet = isSet;
    lodash.isString = isString;
    lodash.isSymbol = isSymbol;
    lodash.isTypedArray = isTypedArray;
    lodash.isUndefined = isUndefined;
    lodash.isWeakMap = isWeakMap;
    lodash.isWeakSet = isWeakSet;
    lodash.join = join;
    lodash.kebabCase = kebabCase;
    lodash.last = last;
    lodash.lastIndexOf = lastIndexOf;
    lodash.lowerCase = lowerCase;
    lodash.lowerFirst = lowerFirst;
    lodash.lt = lt;
    lodash.lte = lte;
    lodash.max = max;
    lodash.maxBy = maxBy;
    lodash.mean = mean;
    lodash.meanBy = meanBy;
    lodash.min = min;
    lodash.minBy = minBy;
    lodash.stubArray = stubArray;
    lodash.stubFalse = stubFalse;
    lodash.stubObject = stubObject;
    lodash.stubString = stubString;
    lodash.stubTrue = stubTrue;
    lodash.multiply = multiply;
    lodash.nth = nth;
    lodash.noConflict = noConflict;
    lodash.noop = noop;
    lodash.now = now;
    lodash.pad = pad;
    lodash.padEnd = padEnd;
    lodash.padStart = padStart;
    lodash.parseInt = parseInt;
    lodash.random = random;
    lodash.reduce = reduce;
    lodash.reduceRight = reduceRight;
    lodash.repeat = repeat;
    lodash.replace = replace;
    lodash.result = result;
    lodash.round = round;
    lodash.runInContext = runInContext;
    lodash.sample = sample;
    lodash.size = size;
    lodash.snakeCase = snakeCase;
    lodash.some = some;
    lodash.sortedIndex = sortedIndex;
    lodash.sortedIndexBy = sortedIndexBy;
    lodash.sortedIndexOf = sortedIndexOf;
    lodash.sortedLastIndex = sortedLastIndex;
    lodash.sortedLastIndexBy = sortedLastIndexBy;
    lodash.sortedLastIndexOf = sortedLastIndexOf;
    lodash.startCase = startCase;
    lodash.startsWith = startsWith;
    lodash.subtract = subtract;
    lodash.sum = sum;
    lodash.sumBy = sumBy;
    lodash.template = template;
    lodash.times = times;
    lodash.toFinite = toFinite;
    lodash.toInteger = toInteger;
    lodash.toLength = toLength;
    lodash.toLower = toLower;
    lodash.toNumber = toNumber;
    lodash.toSafeInteger = toSafeInteger;
    lodash.toString = toString;
    lodash.toUpper = toUpper;
    lodash.trim = trim;
    lodash.trimEnd = trimEnd;
    lodash.trimStart = trimStart;
    lodash.truncate = truncate;
    lodash.unescape = unescape;
    lodash.uniqueId = uniqueId;
    lodash.upperCase = upperCase;
    lodash.upperFirst = upperFirst;

    // Add aliases.
    lodash.each = forEach;
    lodash.eachRight = forEachRight;
    lodash.first = head;

    mixin(lodash, (function() {
      var source = {};
      baseForOwn(lodash, function(func, methodName) {
        if (!hasOwnProperty.call(lodash.prototype, methodName)) {
          source[methodName] = func;
        }
      });
      return source;
    }()), { 'chain': false });

    /*------------------------------------------------------------------------*/

    /**
     * The semantic version number.
     *
     * @static
     * @memberOf _
     * @type {string}
     */
    lodash.VERSION = VERSION;

    // Assign default placeholders.
    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
      lodash[methodName].placeholder = lodash;
    });

    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
    arrayEach(['drop', 'take'], function(methodName, index) {
      LazyWrapper.prototype[methodName] = function(n) {
        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);

        var result = (this.__filtered__ && !index)
          ? new LazyWrapper(this)
          : this.clone();

        if (result.__filtered__) {
          result.__takeCount__ = nativeMin(n, result.__takeCount__);
        } else {
          result.__views__.push({
            'size': nativeMin(n, MAX_ARRAY_LENGTH),
            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
          });
        }
        return result;
      };

      LazyWrapper.prototype[methodName + 'Right'] = function(n) {
        return this.reverse()[methodName](n).reverse();
      };
    });

    // Add `LazyWrapper` methods that accept an `iteratee` value.
    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
      var type = index + 1,
          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

      LazyWrapper.prototype[methodName] = function(iteratee) {
        var result = this.clone();
        result.__iteratees__.push({
          'iteratee': getIteratee(iteratee, 3),
          'type': type
        });
        result.__filtered__ = result.__filtered__ || isFilter;
        return result;
      };
    });

    // Add `LazyWrapper` methods for `_.head` and `_.last`.
    arrayEach(['head', 'last'], function(methodName, index) {
      var takeName = 'take' + (index ? 'Right' : '');

      LazyWrapper.prototype[methodName] = function() {
        return this[takeName](1).value()[0];
      };
    });

    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
    arrayEach(['initial', 'tail'], function(methodName, index) {
      var dropName = 'drop' + (index ? '' : 'Right');

      LazyWrapper.prototype[methodName] = function() {
        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
      };
    });

    LazyWrapper.prototype.compact = function() {
      return this.filter(identity);
    };

    LazyWrapper.prototype.find = function(predicate) {
      return this.filter(predicate).head();
    };

    LazyWrapper.prototype.findLast = function(predicate) {
      return this.reverse().find(predicate);
    };

    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
      if (typeof path == 'function') {
        return new LazyWrapper(this);
      }
      return this.map(function(value) {
        return baseInvoke(value, path, args);
      });
    });

    LazyWrapper.prototype.reject = function(predicate) {
      return this.filter(negate(getIteratee(predicate)));
    };

    LazyWrapper.prototype.slice = function(start, end) {
      start = toInteger(start);

      var result = this;
      if (result.__filtered__ && (start > 0 || end < 0)) {
        return new LazyWrapper(result);
      }
      if (start < 0) {
        result = result.takeRight(-start);
      } else if (start) {
        result = result.drop(start);
      }
      if (end !== undefined) {
        end = toInteger(end);
        result = end < 0 ? result.dropRight(-end) : result.take(end - start);
      }
      return result;
    };

    LazyWrapper.prototype.takeRightWhile = function(predicate) {
      return this.reverse().takeWhile(predicate).reverse();
    };

    LazyWrapper.prototype.toArray = function() {
      return this.take(MAX_ARRAY_LENGTH);
    };

    // Add `LazyWrapper` methods to `lodash.prototype`.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
          isTaker = /^(?:head|last)$/.test(methodName),
          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
          retUnwrapped = isTaker || /^find/.test(methodName);

      if (!lodashFunc) {
        return;
      }
      lodash.prototype[methodName] = function() {
        var value = this.__wrapped__,
            args = isTaker ? [1] : arguments,
            isLazy = value instanceof LazyWrapper,
            iteratee = args[0],
            useLazy = isLazy || isArray(value);

        var interceptor = function(value) {
          var result = lodashFunc.apply(lodash, arrayPush([value], args));
          return (isTaker && chainAll) ? result[0] : result;
        };

        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
          // Avoid lazy use if the iteratee has a "length" value other than `1`.
          isLazy = useLazy = false;
        }
        var chainAll = this.__chain__,
            isHybrid = !!this.__actions__.length,
            isUnwrapped = retUnwrapped && !chainAll,
            onlyLazy = isLazy && !isHybrid;

        if (!retUnwrapped && useLazy) {
          value = onlyLazy ? value : new LazyWrapper(this);
          var result = func.apply(value, args);
          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
          return new LodashWrapper(result, chainAll);
        }
        if (isUnwrapped && onlyLazy) {
          return func.apply(this, args);
        }
        result = this.thru(interceptor);
        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
      };
    });

    // Add `Array` methods to `lodash.prototype`.
    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
      var func = arrayProto[methodName],
          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
          retUnwrapped = /^(?:pop|shift)$/.test(methodName);

      lodash.prototype[methodName] = function() {
        var args = arguments;
        if (retUnwrapped && !this.__chain__) {
          var value = this.value();
          return func.apply(isArray(value) ? value : [], args);
        }
        return this[chainName](function(value) {
          return func.apply(isArray(value) ? value : [], args);
        });
      };
    });

    // Map minified method names to their real names.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var lodashFunc = lodash[methodName];
      if (lodashFunc) {
        var key = (lodashFunc.name + ''),
            names = realNames[key] || (realNames[key] = []);

        names.push({ 'name': methodName, 'func': lodashFunc });
      }
    });

    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
      'name': 'wrapper',
      'func': undefined
    }];

    // Add methods to `LazyWrapper`.
    LazyWrapper.prototype.clone = lazyClone;
    LazyWrapper.prototype.reverse = lazyReverse;
    LazyWrapper.prototype.value = lazyValue;

    // Add chain sequence methods to the `lodash` wrapper.
    lodash.prototype.at = wrapperAt;
    lodash.prototype.chain = wrapperChain;
    lodash.prototype.commit = wrapperCommit;
    lodash.prototype.next = wrapperNext;
    lodash.prototype.plant = wrapperPlant;
    lodash.prototype.reverse = wrapperReverse;
    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

    // Add lazy aliases.
    lodash.prototype.first = lodash.prototype.head;

    if (symIterator) {
      lodash.prototype[symIterator] = wrapperToIterator;
    }
    return lodash;
  });

  /*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers, like r.js, check for condition patterns like:
  if (true) {
    // Expose Lodash on the global object to prevent errors when Lodash is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    // Use `_.noConflict` to remove Lodash from the global object.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    !(__WEBPACK_AMD_DEFINE_RESULT__ = (function() {
      return _;
    }).call(exports, __webpack_require__, exports, module),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  }
  // Check for `exports` after `define` in case a build optimizer adds it.
  else {}
}.call(this));

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../webpack/buildin/global.js */ 86), __webpack_require__(/*! ./../../../webpack/buildin/module.js */ 456)(module)))

/***/ }),
/* 159 */,
/* 160 */,
/* 161 */,
/* 162 */,
/* 163 */,
/* 164 */,
/* 165 */,
/* 166 */,
/* 167 */,
/* 168 */,
/* 169 */,
/* 170 */,
/* 171 */,
/* 172 */,
/* 173 */,
/* 174 */,
/* 175 */
/*!*********************************************!*\
  !*** ./node_modules/escodegen/escodegen.js ***!
  \*********************************************/
/*! no static exports found */
/*! exports used: generate */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global) {/*
  Copyright (C) 2012-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2015 Ingvar Stepanyan <me@rreverser.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>
  Copyright (C) 2012-2013 Michael Ficarra <escodegen.copyright@michael.ficarra.me>
  Copyright (C) 2012-2013 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2013 Irakli Gozalishvili <rfobic@gmail.com>
  Copyright (C) 2012 Robert Gust-Bardon <donate@robert.gust-bardon.org>
  Copyright (C) 2012 John Freeman <jfreeman08@gmail.com>
  Copyright (C) 2011-2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*global exports:true, require:true, global:true*/
(function () {
    'use strict';

    var Syntax,
        Precedence,
        BinaryPrecedence,
        SourceNode,
        estraverse,
        esutils,
        base,
        indent,
        json,
        renumber,
        hexadecimal,
        quotes,
        escapeless,
        newline,
        space,
        parentheses,
        semicolons,
        safeConcatenation,
        directive,
        extra,
        parse,
        sourceMap,
        sourceCode,
        preserveBlankLines,
        FORMAT_MINIFY,
        FORMAT_DEFAULTS;

    estraverse = __webpack_require__(/*! estraverse */ 382);
    esutils = __webpack_require__(/*! esutils */ 380);

    Syntax = estraverse.Syntax;

    // Generation is done by generateExpression.
    function isExpression(node) {
        return CodeGenerator.Expression.hasOwnProperty(node.type);
    }

    // Generation is done by generateStatement.
    function isStatement(node) {
        return CodeGenerator.Statement.hasOwnProperty(node.type);
    }

    Precedence = {
        Sequence: 0,
        Yield: 1,
        Await: 1,
        Assignment: 1,
        Conditional: 2,
        ArrowFunction: 2,
        LogicalOR: 3,
        LogicalAND: 4,
        BitwiseOR: 5,
        BitwiseXOR: 6,
        BitwiseAND: 7,
        Equality: 8,
        Relational: 9,
        BitwiseSHIFT: 10,
        Additive: 11,
        Multiplicative: 12,
        Unary: 13,
        Postfix: 14,
        Call: 15,
        New: 16,
        TaggedTemplate: 17,
        Member: 18,
        Primary: 19
    };

    BinaryPrecedence = {
        '||': Precedence.LogicalOR,
        '&&': Precedence.LogicalAND,
        '|': Precedence.BitwiseOR,
        '^': Precedence.BitwiseXOR,
        '&': Precedence.BitwiseAND,
        '==': Precedence.Equality,
        '!=': Precedence.Equality,
        '===': Precedence.Equality,
        '!==': Precedence.Equality,
        'is': Precedence.Equality,
        'isnt': Precedence.Equality,
        '<': Precedence.Relational,
        '>': Precedence.Relational,
        '<=': Precedence.Relational,
        '>=': Precedence.Relational,
        'in': Precedence.Relational,
        'instanceof': Precedence.Relational,
        '<<': Precedence.BitwiseSHIFT,
        '>>': Precedence.BitwiseSHIFT,
        '>>>': Precedence.BitwiseSHIFT,
        '+': Precedence.Additive,
        '-': Precedence.Additive,
        '*': Precedence.Multiplicative,
        '%': Precedence.Multiplicative,
        '/': Precedence.Multiplicative
    };

    //Flags
    var F_ALLOW_IN = 1,
        F_ALLOW_CALL = 1 << 1,
        F_ALLOW_UNPARATH_NEW = 1 << 2,
        F_FUNC_BODY = 1 << 3,
        F_DIRECTIVE_CTX = 1 << 4,
        F_SEMICOLON_OPT = 1 << 5;

    //Expression flag sets
    //NOTE: Flag order:
    // F_ALLOW_IN
    // F_ALLOW_CALL
    // F_ALLOW_UNPARATH_NEW
    var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
        E_TTF = F_ALLOW_IN | F_ALLOW_CALL,
        E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
        E_TFF = F_ALLOW_IN,
        E_FFT = F_ALLOW_UNPARATH_NEW,
        E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW;

    //Statement flag sets
    //NOTE: Flag order:
    // F_ALLOW_IN
    // F_FUNC_BODY
    // F_DIRECTIVE_CTX
    // F_SEMICOLON_OPT
    var S_TFFF = F_ALLOW_IN,
        S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT,
        S_FFFF = 0x00,
        S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX,
        S_TTFF = F_ALLOW_IN | F_FUNC_BODY;

    function getDefaultOptions() {
        // default options
        return {
            indent: null,
            base: null,
            parse: null,
            comment: false,
            format: {
                indent: {
                    style: '    ',
                    base: 0,
                    adjustMultilineComment: false
                },
                newline: '\n',
                space: ' ',
                json: false,
                renumber: false,
                hexadecimal: false,
                quotes: 'single',
                escapeless: false,
                compact: false,
                parentheses: true,
                semicolons: true,
                safeConcatenation: false,
                preserveBlankLines: false
            },
            moz: {
                comprehensionExpressionStartsWithAssignment: false,
                starlessGenerator: false
            },
            sourceMap: null,
            sourceMapRoot: null,
            sourceMapWithCode: false,
            directive: false,
            raw: true,
            verbatim: null,
            sourceCode: null
        };
    }

    function stringRepeat(str, num) {
        var result = '';

        for (num |= 0; num > 0; num >>>= 1, str += str) {
            if (num & 1) {
                result += str;
            }
        }

        return result;
    }

    function hasLineTerminator(str) {
        return (/[\r\n]/g).test(str);
    }

    function endsWithLineTerminator(str) {
        var len = str.length;
        return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1));
    }

    function merge(target, override) {
        var key;
        for (key in override) {
            if (override.hasOwnProperty(key)) {
                target[key] = override[key];
            }
        }
        return target;
    }

    function updateDeeply(target, override) {
        var key, val;

        function isHashObject(target) {
            return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
        }

        for (key in override) {
            if (override.hasOwnProperty(key)) {
                val = override[key];
                if (isHashObject(val)) {
                    if (isHashObject(target[key])) {
                        updateDeeply(target[key], val);
                    } else {
                        target[key] = updateDeeply({}, val);
                    }
                } else {
                    target[key] = val;
                }
            }
        }
        return target;
    }

    function generateNumber(value) {
        var result, point, temp, exponent, pos;

        if (value !== value) {
            throw new Error('Numeric literal whose value is NaN');
        }
        if (value < 0 || (value === 0 && 1 / value < 0)) {
            throw new Error('Numeric literal whose value is negative');
        }

        if (value === 1 / 0) {
            return json ? 'null' : renumber ? '1e400' : '1e+400';
        }

        result = '' + value;
        if (!renumber || result.length < 3) {
            return result;
        }

        point = result.indexOf('.');
        if (!json && result.charCodeAt(0) === 0x30  /* 0 */ && point === 1) {
            point = 0;
            result = result.slice(1);
        }
        temp = result;
        result = result.replace('e+', 'e');
        exponent = 0;
        if ((pos = temp.indexOf('e')) > 0) {
            exponent = +temp.slice(pos + 1);
            temp = temp.slice(0, pos);
        }
        if (point >= 0) {
            exponent -= temp.length - point - 1;
            temp = +(temp.slice(0, point) + temp.slice(point + 1)) + '';
        }
        pos = 0;
        while (temp.charCodeAt(temp.length + pos - 1) === 0x30  /* 0 */) {
            --pos;
        }
        if (pos !== 0) {
            exponent -= pos;
            temp = temp.slice(0, pos);
        }
        if (exponent !== 0) {
            temp += 'e' + exponent;
        }
        if ((temp.length < result.length ||
                    (hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length)) &&
                +temp === value) {
            result = temp;
        }

        return result;
    }

    // Generate valid RegExp expression.
    // This function is based on https://github.com/Constellation/iv Engine

    function escapeRegExpCharacter(ch, previousIsBackslash) {
        // not handling '\' and handling \u2028 or \u2029 to unicode escape sequence
        if ((ch & ~1) === 0x2028) {
            return (previousIsBackslash ? 'u' : '\\u') + ((ch === 0x2028) ? '2028' : '2029');
        } else if (ch === 10 || ch === 13) {  // \n, \r
            return (previousIsBackslash ? '' : '\\') + ((ch === 10) ? 'n' : 'r');
        }
        return String.fromCharCode(ch);
    }

    function generateRegExp(reg) {
        var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash;

        result = reg.toString();

        if (reg.source) {
            // extract flag from toString result
            match = result.match(/\/([^/]*)$/);
            if (!match) {
                return result;
            }

            flags = match[1];
            result = '';

            characterInBrack = false;
            previousIsBackslash = false;
            for (i = 0, iz = reg.source.length; i < iz; ++i) {
                ch = reg.source.charCodeAt(i);

                if (!previousIsBackslash) {
                    if (characterInBrack) {
                        if (ch === 93) {  // ]
                            characterInBrack = false;
                        }
                    } else {
                        if (ch === 47) {  // /
                            result += '\\';
                        } else if (ch === 91) {  // [
                            characterInBrack = true;
                        }
                    }
                    result += escapeRegExpCharacter(ch, previousIsBackslash);
                    previousIsBackslash = ch === 92;  // \
                } else {
                    // if new RegExp("\\\n') is provided, create /\n/
                    result += escapeRegExpCharacter(ch, previousIsBackslash);
                    // prevent like /\\[/]/
                    previousIsBackslash = false;
                }
            }

            return '/' + result + '/' + flags;
        }

        return result;
    }

    function escapeAllowedCharacter(code, next) {
        var hex;

        if (code === 0x08  /* \b */) {
            return '\\b';
        }

        if (code === 0x0C  /* \f */) {
            return '\\f';
        }

        if (code === 0x09  /* \t */) {
            return '\\t';
        }

        hex = code.toString(16).toUpperCase();
        if (json || code > 0xFF) {
            return '\\u' + '0000'.slice(hex.length) + hex;
        } else if (code === 0x0000 && !esutils.code.isDecimalDigit(next)) {
            return '\\0';
        } else if (code === 0x000B  /* \v */) { // '\v'
            return '\\x0B';
        } else {
            return '\\x' + '00'.slice(hex.length) + hex;
        }
    }

    function escapeDisallowedCharacter(code) {
        if (code === 0x5C  /* \ */) {
            return '\\\\';
        }

        if (code === 0x0A  /* \n */) {
            return '\\n';
        }

        if (code === 0x0D  /* \r */) {
            return '\\r';
        }

        if (code === 0x2028) {
            return '\\u2028';
        }

        if (code === 0x2029) {
            return '\\u2029';
        }

        throw new Error('Incorrectly classified character');
    }

    function escapeDirective(str) {
        var i, iz, code, quote;

        quote = quotes === 'double' ? '"' : '\'';
        for (i = 0, iz = str.length; i < iz; ++i) {
            code = str.charCodeAt(i);
            if (code === 0x27  /* ' */) {
                quote = '"';
                break;
            } else if (code === 0x22  /* " */) {
                quote = '\'';
                break;
            } else if (code === 0x5C  /* \ */) {
                ++i;
            }
        }

        return quote + str + quote;
    }

    function escapeString(str) {
        var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote;

        for (i = 0, len = str.length; i < len; ++i) {
            code = str.charCodeAt(i);
            if (code === 0x27  /* ' */) {
                ++singleQuotes;
            } else if (code === 0x22  /* " */) {
                ++doubleQuotes;
            } else if (code === 0x2F  /* / */ && json) {
                result += '\\';
            } else if (esutils.code.isLineTerminator(code) || code === 0x5C  /* \ */) {
                result += escapeDisallowedCharacter(code);
                continue;
            } else if (!esutils.code.isIdentifierPartES5(code) && (json && code < 0x20  /* SP */ || !json && !escapeless && (code < 0x20  /* SP */ || code > 0x7E  /* ~ */))) {
                result += escapeAllowedCharacter(code, str.charCodeAt(i + 1));
                continue;
            }
            result += String.fromCharCode(code);
        }

        single = !(quotes === 'double' || (quotes === 'auto' && doubleQuotes < singleQuotes));
        quote = single ? '\'' : '"';

        if (!(single ? singleQuotes : doubleQuotes)) {
            return quote + result + quote;
        }

        str = result;
        result = quote;

        for (i = 0, len = str.length; i < len; ++i) {
            code = str.charCodeAt(i);
            if ((code === 0x27  /* ' */ && single) || (code === 0x22  /* " */ && !single)) {
                result += '\\';
            }
            result += String.fromCharCode(code);
        }

        return result + quote;
    }

    /**
     * flatten an array to a string, where the array can contain
     * either strings or nested arrays
     */
    function flattenToString(arr) {
        var i, iz, elem, result = '';
        for (i = 0, iz = arr.length; i < iz; ++i) {
            elem = arr[i];
            result += Array.isArray(elem) ? flattenToString(elem) : elem;
        }
        return result;
    }

    /**
     * convert generated to a SourceNode when source maps are enabled.
     */
    function toSourceNodeWhenNeeded(generated, node) {
        if (!sourceMap) {
            // with no source maps, generated is either an
            // array or a string.  if an array, flatten it.
            // if a string, just return it
            if (Array.isArray(generated)) {
                return flattenToString(generated);
            } else {
                return generated;
            }
        }
        if (node == null) {
            if (generated instanceof SourceNode) {
                return generated;
            } else {
                node = {};
            }
        }
        if (node.loc == null) {
            return new SourceNode(null, null, sourceMap, generated, node.name || null);
        }
        return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap === true ? node.loc.source || null : sourceMap), generated, node.name || null);
    }

    function noEmptySpace() {
        return (space) ? space : ' ';
    }

    function join(left, right) {
        var leftSource,
            rightSource,
            leftCharCode,
            rightCharCode;

        leftSource = toSourceNodeWhenNeeded(left).toString();
        if (leftSource.length === 0) {
            return [right];
        }

        rightSource = toSourceNodeWhenNeeded(right).toString();
        if (rightSource.length === 0) {
            return [left];
        }

        leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
        rightCharCode = rightSource.charCodeAt(0);

        if ((leftCharCode === 0x2B  /* + */ || leftCharCode === 0x2D  /* - */) && leftCharCode === rightCharCode ||
            esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode) ||
            leftCharCode === 0x2F  /* / */ && rightCharCode === 0x69  /* i */) { // infix word operators all start with `i`
            return [left, noEmptySpace(), right];
        } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) ||
                esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) {
            return [left, right];
        }
        return [left, space, right];
    }

    function addIndent(stmt) {
        return [base, stmt];
    }

    function withIndent(fn) {
        var previousBase;
        previousBase = base;
        base += indent;
        fn(base);
        base = previousBase;
    }

    function calculateSpaces(str) {
        var i;
        for (i = str.length - 1; i >= 0; --i) {
            if (esutils.code.isLineTerminator(str.charCodeAt(i))) {
                break;
            }
        }
        return (str.length - 1) - i;
    }

    function adjustMultilineComment(value, specialBase) {
        var array, i, len, line, j, spaces, previousBase, sn;

        array = value.split(/\r\n|[\r\n]/);
        spaces = Number.MAX_VALUE;

        // first line doesn't have indentation
        for (i = 1, len = array.length; i < len; ++i) {
            line = array[i];
            j = 0;
            while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) {
                ++j;
            }
            if (spaces > j) {
                spaces = j;
            }
        }

        if (typeof specialBase !== 'undefined') {
            // pattern like
            // {
            //   var t = 20;  /*
            //                 * this is comment
            //                 */
            // }
            previousBase = base;
            if (array[1][spaces] === '*') {
                specialBase += ' ';
            }
            base = specialBase;
        } else {
            if (spaces & 1) {
                // /*
                //  *
                //  */
                // If spaces are odd number, above pattern is considered.
                // We waste 1 space.
                --spaces;
            }
            previousBase = base;
        }

        for (i = 1, len = array.length; i < len; ++i) {
            sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces)));
            array[i] = sourceMap ? sn.join('') : sn;
        }

        base = previousBase;

        return array.join('\n');
    }

    function generateComment(comment, specialBase) {
        if (comment.type === 'Line') {
            if (endsWithLineTerminator(comment.value)) {
                return '//' + comment.value;
            } else {
                // Always use LineTerminator
                var result = '//' + comment.value;
                if (!preserveBlankLines) {
                    result += '\n';
                }
                return result;
            }
        }
        if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) {
            return adjustMultilineComment('/*' + comment.value + '*/', specialBase);
        }
        return '/*' + comment.value + '*/';
    }

    function addComments(stmt, result) {
        var i, len, comment, save, tailingToStatement, specialBase, fragment,
            extRange, range, prevRange, prefix, infix, suffix, count;

        if (stmt.leadingComments && stmt.leadingComments.length > 0) {
            save = result;

            if (preserveBlankLines) {
                comment = stmt.leadingComments[0];
                result = [];

                extRange = comment.extendedRange;
                range = comment.range;

                prefix = sourceCode.substring(extRange[0], range[0]);
                count = (prefix.match(/\n/g) || []).length;
                if (count > 0) {
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));
                } else {
                    result.push(prefix);
                    result.push(generateComment(comment));
                }

                prevRange = range;

                for (i = 1, len = stmt.leadingComments.length; i < len; i++) {
                    comment = stmt.leadingComments[i];
                    range = comment.range;

                    infix = sourceCode.substring(prevRange[1], range[0]);
                    count = (infix.match(/\n/g) || []).length;
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));

                    prevRange = range;
                }

                suffix = sourceCode.substring(range[1], extRange[1]);
                count = (suffix.match(/\n/g) || []).length;
                result.push(stringRepeat('\n', count));
            } else {
                comment = stmt.leadingComments[0];
                result = [];
                if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) {
                    result.push('\n');
                }
                result.push(generateComment(comment));
                if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                    result.push('\n');
                }

                for (i = 1, len = stmt.leadingComments.length; i < len; ++i) {
                    comment = stmt.leadingComments[i];
                    fragment = [generateComment(comment)];
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        fragment.push('\n');
                    }
                    result.push(addIndent(fragment));
                }
            }

            result.push(addIndent(save));
        }

        if (stmt.trailingComments) {

            if (preserveBlankLines) {
                comment = stmt.trailingComments[0];
                extRange = comment.extendedRange;
                range = comment.range;

                prefix = sourceCode.substring(extRange[0], range[0]);
                count = (prefix.match(/\n/g) || []).length;

                if (count > 0) {
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));
                } else {
                    result.push(prefix);
                    result.push(generateComment(comment));
                }
            } else {
                tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
                specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([base, result, indent]).toString()));
                for (i = 0, len = stmt.trailingComments.length; i < len; ++i) {
                    comment = stmt.trailingComments[i];
                    if (tailingToStatement) {
                        // We assume target like following script
                        //
                        // var t = 20;  /**
                        //               * This is comment of t
                        //               */
                        if (i === 0) {
                            // first case
                            result = [result, indent];
                        } else {
                            result = [result, specialBase];
                        }
                        result.push(generateComment(comment, specialBase));
                    } else {
                        result = [result, addIndent(generateComment(comment))];
                    }
                    if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                        result = [result, '\n'];
                    }
                }
            }
        }

        return result;
    }

    function generateBlankLines(start, end, result) {
        var j, newlineCount = 0;

        for (j = start; j < end; j++) {
            if (sourceCode[j] === '\n') {
                newlineCount++;
            }
        }

        for (j = 1; j < newlineCount; j++) {
            result.push(newline);
        }
    }

    function parenthesize(text, current, should) {
        if (current < should) {
            return ['(', text, ')'];
        }
        return text;
    }

    function generateVerbatimString(string) {
        var i, iz, result;
        result = string.split(/\r\n|\n/);
        for (i = 1, iz = result.length; i < iz; i++) {
            result[i] = newline + base + result[i];
        }
        return result;
    }

    function generateVerbatim(expr, precedence) {
        var verbatim, result, prec;
        verbatim = expr[extra.verbatim];

        if (typeof verbatim === 'string') {
            result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence);
        } else {
            // verbatim is object
            result = generateVerbatimString(verbatim.content);
            prec = (verbatim.precedence != null) ? verbatim.precedence : Precedence.Sequence;
            result = parenthesize(result, prec, precedence);
        }

        return toSourceNodeWhenNeeded(result, expr);
    }

    function CodeGenerator() {
    }

    // Helpers.

    CodeGenerator.prototype.maybeBlock = function(stmt, flags) {
        var result, noLeadingComment, that = this;

        noLeadingComment = !extra.comment || !stmt.leadingComments;

        if (stmt.type === Syntax.BlockStatement && noLeadingComment) {
            return [space, this.generateStatement(stmt, flags)];
        }

        if (stmt.type === Syntax.EmptyStatement && noLeadingComment) {
            return ';';
        }

        withIndent(function () {
            result = [
                newline,
                addIndent(that.generateStatement(stmt, flags))
            ];
        });

        return result;
    };

    CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) {
        var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
        if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) {
            return [result, space];
        }
        if (ends) {
            return [result, base];
        }
        return [result, newline, base];
    };

    function generateIdentifier(node) {
        return toSourceNodeWhenNeeded(node.name, node);
    }

    function generateAsyncPrefix(node, spaceRequired) {
        return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : '';
    }

    function generateStarSuffix(node) {
        var isGenerator = node.generator && !extra.moz.starlessGenerator;
        return isGenerator ? '*' + space : '';
    }

    function generateMethodPrefix(prop) {
        var func = prop.value, prefix = '';
        if (func.async) {
            prefix += generateAsyncPrefix(func, !prop.computed);
        }
        if (func.generator) {
            // avoid space before method name
            prefix += generateStarSuffix(func) ? '*' : '';
        }
        return prefix;
    }

    CodeGenerator.prototype.generatePattern = function (node, precedence, flags) {
        if (node.type === Syntax.Identifier) {
            return generateIdentifier(node);
        }
        return this.generateExpression(node, precedence, flags);
    };

    CodeGenerator.prototype.generateFunctionParams = function (node) {
        var i, iz, result, hasDefault;

        hasDefault = false;

        if (node.type === Syntax.ArrowFunctionExpression &&
                !node.rest && (!node.defaults || node.defaults.length === 0) &&
                node.params.length === 1 && node.params[0].type === Syntax.Identifier) {
            // arg => { } case
            result = [generateAsyncPrefix(node, true), generateIdentifier(node.params[0])];
        } else {
            result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : [];
            result.push('(');
            if (node.defaults) {
                hasDefault = true;
            }
            for (i = 0, iz = node.params.length; i < iz; ++i) {
                if (hasDefault && node.defaults[i]) {
                    // Handle default values.
                    result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT));
                } else {
                    result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT));
                }
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }

            if (node.rest) {
                if (node.params.length) {
                    result.push(',' + space);
                }
                result.push('...');
                result.push(generateIdentifier(node.rest));
            }

            result.push(')');
        }

        return result;
    };

    CodeGenerator.prototype.generateFunctionBody = function (node) {
        var result, expr;

        result = this.generateFunctionParams(node);

        if (node.type === Syntax.ArrowFunctionExpression) {
            result.push(space);
            result.push('=>');
        }

        if (node.expression) {
            result.push(space);
            expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT);
            if (expr.toString().charAt(0) === '{') {
                expr = ['(', expr, ')'];
            }
            result.push(expr);
        } else {
            result.push(this.maybeBlock(node.body, S_TTFF));
        }

        return result;
    };

    CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) {
        var result = ['for' + space + (stmt.await ? 'await' + space : '') + '('], that = this;
        withIndent(function () {
            if (stmt.left.type === Syntax.VariableDeclaration) {
                withIndent(function () {
                    result.push(stmt.left.kind + noEmptySpace());
                    result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF));
                });
            } else {
                result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT));
            }

            result = join(result, operator);
            result = [join(
                result,
                that.generateExpression(stmt.right, Precedence.Sequence, E_TTT)
            ), ')'];
        });
        result.push(this.maybeBlock(stmt.body, flags));
        return result;
    };

    CodeGenerator.prototype.generatePropertyKey = function (expr, computed) {
        var result = [];

        if (computed) {
            result.push('[');
        }

        result.push(this.generateExpression(expr, Precedence.Sequence, E_TTT));

        if (computed) {
            result.push(']');
        }

        return result;
    };

    CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) {
        if (Precedence.Assignment < precedence) {
            flags |= F_ALLOW_IN;
        }

        return parenthesize(
            [
                this.generateExpression(left, Precedence.Call, flags),
                space + operator + space,
                this.generateExpression(right, Precedence.Assignment, flags)
            ],
            Precedence.Assignment,
            precedence
        );
    };

    CodeGenerator.prototype.semicolon = function (flags) {
        if (!semicolons && flags & F_SEMICOLON_OPT) {
            return '';
        }
        return ';';
    };

    // Statements.

    CodeGenerator.Statement = {

        BlockStatement: function (stmt, flags) {
            var range, content, result = ['{', newline], that = this;

            withIndent(function () {
                // handle functions without any code
                if (stmt.body.length === 0 && preserveBlankLines) {
                    range = stmt.range;
                    if (range[1] - range[0] > 2) {
                        content = sourceCode.substring(range[0] + 1, range[1] - 1);
                        if (content[0] === '\n') {
                            result = ['{'];
                        }
                        result.push(content);
                    }
                }

                var i, iz, fragment, bodyFlags;
                bodyFlags = S_TFFF;
                if (flags & F_FUNC_BODY) {
                    bodyFlags |= F_DIRECTIVE_CTX;
                }

                for (i = 0, iz = stmt.body.length; i < iz; ++i) {
                    if (preserveBlankLines) {
                        // handle spaces before the first line
                        if (i === 0) {
                            if (stmt.body[0].leadingComments) {
                                range = stmt.body[0].leadingComments[0].extendedRange;
                                content = sourceCode.substring(range[0], range[1]);
                                if (content[0] === '\n') {
                                    result = ['{'];
                                }
                            }
                            if (!stmt.body[0].leadingComments) {
                                generateBlankLines(stmt.range[0], stmt.body[0].range[0], result);
                            }
                        }

                        // handle spaces between lines
                        if (i > 0) {
                            if (!stmt.body[i - 1].trailingComments  && !stmt.body[i].leadingComments) {
                                generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                            }
                        }
                    }

                    if (i === iz - 1) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }

                    if (stmt.body[i].leadingComments && preserveBlankLines) {
                        fragment = that.generateStatement(stmt.body[i], bodyFlags);
                    } else {
                        fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags));
                    }

                    result.push(fragment);
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        if (preserveBlankLines && i < iz - 1) {
                            // don't add a new line if there are leading coments
                            // in the next statement
                            if (!stmt.body[i + 1].leadingComments) {
                                result.push(newline);
                            }
                        } else {
                            result.push(newline);
                        }
                    }

                    if (preserveBlankLines) {
                        // handle spaces after the last line
                        if (i === iz - 1) {
                            if (!stmt.body[i].trailingComments) {
                                generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                            }
                        }
                    }
                }
            });

            result.push(addIndent('}'));
            return result;
        },

        BreakStatement: function (stmt, flags) {
            if (stmt.label) {
                return 'break ' + stmt.label.name + this.semicolon(flags);
            }
            return 'break' + this.semicolon(flags);
        },

        ContinueStatement: function (stmt, flags) {
            if (stmt.label) {
                return 'continue ' + stmt.label.name + this.semicolon(flags);
            }
            return 'continue' + this.semicolon(flags);
        },

        ClassBody: function (stmt, flags) {
            var result = [ '{', newline], that = this;

            withIndent(function (indent) {
                var i, iz;

                for (i = 0, iz = stmt.body.length; i < iz; ++i) {
                    result.push(indent);
                    result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                        result.push(newline);
                    }
                }
            });

            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(base);
            result.push('}');
            return result;
        },

        ClassDeclaration: function (stmt, flags) {
            var result, fragment;
            result  = ['class'];
            if (stmt.id) {
                result = join(result, this.generateExpression(stmt.id, Precedence.Sequence, E_TTT));
            }
            if (stmt.superClass) {
                fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Assignment, E_TTT));
                result = join(result, fragment);
            }
            result.push(space);
            result.push(this.generateStatement(stmt.body, S_TFFT));
            return result;
        },

        DirectiveStatement: function (stmt, flags) {
            if (extra.raw && stmt.raw) {
                return stmt.raw + this.semicolon(flags);
            }
            return escapeDirective(stmt.directive) + this.semicolon(flags);
        },

        DoWhileStatement: function (stmt, flags) {
            // Because `do 42 while (cond)` is Syntax Error. We need semicolon.
            var result = join('do', this.maybeBlock(stmt.body, S_TFFF));
            result = this.maybeBlockSuffix(stmt.body, result);
            return join(result, [
                'while' + space + '(',
                this.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                ')' + this.semicolon(flags)
            ]);
        },

        CatchClause: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                var guard;

                result = [
                    'catch' + space + '(',
                    that.generateExpression(stmt.param, Precedence.Sequence, E_TTT),
                    ')'
                ];

                if (stmt.guard) {
                    guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT);
                    result.splice(2, 0, ' if ', guard);
                }
            });
            result.push(this.maybeBlock(stmt.body, S_TFFF));
            return result;
        },

        DebuggerStatement: function (stmt, flags) {
            return 'debugger' + this.semicolon(flags);
        },

        EmptyStatement: function (stmt, flags) {
            return ';';
        },

        ExportDefaultDeclaration: function (stmt, flags) {
            var result = [ 'export' ], bodyFlags;

            bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF;

            // export default HoistableDeclaration[Default]
            // export default AssignmentExpression[In] ;
            result = join(result, 'default');
            if (isStatement(stmt.declaration)) {
                result = join(result, this.generateStatement(stmt.declaration, bodyFlags));
            } else {
                result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags));
            }
            return result;
        },

        ExportNamedDeclaration: function (stmt, flags) {
            var result = [ 'export' ], bodyFlags, that = this;

            bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF;

            // export VariableStatement
            // export Declaration[Default]
            if (stmt.declaration) {
                return join(result, this.generateStatement(stmt.declaration, bodyFlags));
            }

            // export ExportClause[NoReference] FromClause ;
            // export ExportClause ;
            if (stmt.specifiers) {
                if (stmt.specifiers.length === 0) {
                    result = join(result, '{' + space + '}');
                } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) {
                    result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT));
                } else {
                    result = join(result, '{');
                    withIndent(function (indent) {
                        var i, iz;
                        result.push(newline);
                        for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) {
                            result.push(indent);
                            result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                            if (i + 1 < iz) {
                                result.push(',' + newline);
                            }
                        }
                    });
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                        result.push(newline);
                    }
                    result.push(base + '}');
                }

                if (stmt.source) {
                    result = join(result, [
                        'from' + space,
                        // ModuleSpecifier
                        this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                        this.semicolon(flags)
                    ]);
                } else {
                    result.push(this.semicolon(flags));
                }
            }
            return result;
        },

        ExportAllDeclaration: function (stmt, flags) {
            // export * FromClause ;
            return [
                'export' + space,
                '*' + space,
                'from' + space,
                // ModuleSpecifier
                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                this.semicolon(flags)
            ];
        },

        ExpressionStatement: function (stmt, flags) {
            var result, fragment;

            function isClassPrefixed(fragment) {
                var code;
                if (fragment.slice(0, 5) !== 'class') {
                    return false;
                }
                code = fragment.charCodeAt(5);
                return code === 0x7B  /* '{' */ || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code);
            }

            function isFunctionPrefixed(fragment) {
                var code;
                if (fragment.slice(0, 8) !== 'function') {
                    return false;
                }
                code = fragment.charCodeAt(8);
                return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A  /* '*' */ || esutils.code.isLineTerminator(code);
            }

            function isAsyncPrefixed(fragment) {
                var code, i, iz;
                if (fragment.slice(0, 5) !== 'async') {
                    return false;
                }
                if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) {
                    return false;
                }
                for (i = 6, iz = fragment.length; i < iz; ++i) {
                    if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) {
                        break;
                    }
                }
                if (i === iz) {
                    return false;
                }
                if (fragment.slice(i, i + 8) !== 'function') {
                    return false;
                }
                code = fragment.charCodeAt(i + 8);
                return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A  /* '*' */ || esutils.code.isLineTerminator(code);
            }

            result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)];
            // 12.4 '{', 'function', 'class' is not allowed in this position.
            // wrap expression with parentheses
            fragment = toSourceNodeWhenNeeded(result).toString();
            if (fragment.charCodeAt(0) === 0x7B  /* '{' */ ||  // ObjectExpression
                    isClassPrefixed(fragment) ||
                    isFunctionPrefixed(fragment) ||
                    isAsyncPrefixed(fragment) ||
                    (directive && (flags & F_DIRECTIVE_CTX) && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string')) {
                result = ['(', result, ')' + this.semicolon(flags)];
            } else {
                result.push(this.semicolon(flags));
            }
            return result;
        },

        ImportDeclaration: function (stmt, flags) {
            // ES6: 15.2.1 valid import declarations:
            //     - import ImportClause FromClause ;
            //     - import ModuleSpecifier ;
            var result, cursor, that = this;

            // If no ImportClause is present,
            // this should be `import ModuleSpecifier` so skip `from`
            // ModuleSpecifier is StringLiteral.
            if (stmt.specifiers.length === 0) {
                // import ModuleSpecifier ;
                return [
                    'import',
                    space,
                    // ModuleSpecifier
                    this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                    this.semicolon(flags)
                ];
            }

            // import ImportClause FromClause ;
            result = [
                'import'
            ];
            cursor = 0;

            // ImportedBinding
            if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) {
                result = join(result, [
                        this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
                ]);
                ++cursor;
            }

            if (stmt.specifiers[cursor]) {
                if (cursor !== 0) {
                    result.push(',');
                }

                if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) {
                    // NameSpaceImport
                    result = join(result, [
                            space,
                            this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
                    ]);
                } else {
                    // NamedImports
                    result.push(space + '{');

                    if ((stmt.specifiers.length - cursor) === 1) {
                        // import { ... } from "...";
                        result.push(space);
                        result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT));
                        result.push(space + '}' + space);
                    } else {
                        // import {
                        //    ...,
                        //    ...,
                        // } from "...";
                        withIndent(function (indent) {
                            var i, iz;
                            result.push(newline);
                            for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) {
                                result.push(indent);
                                result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                                if (i + 1 < iz) {
                                    result.push(',' + newline);
                                }
                            }
                        });
                        if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                            result.push(newline);
                        }
                        result.push(base + '}' + space);
                    }
                }
            }

            result = join(result, [
                'from' + space,
                // ModuleSpecifier
                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                this.semicolon(flags)
            ]);
            return result;
        },

        VariableDeclarator: function (stmt, flags) {
            var itemFlags = (flags & F_ALLOW_IN) ? E_TTT : E_FTT;
            if (stmt.init) {
                return [
                    this.generateExpression(stmt.id, Precedence.Assignment, itemFlags),
                    space,
                    '=',
                    space,
                    this.generateExpression(stmt.init, Precedence.Assignment, itemFlags)
                ];
            }
            return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags);
        },

        VariableDeclaration: function (stmt, flags) {
            // VariableDeclarator is typed as Statement,
            // but joined with comma (not LineTerminator).
            // So if comment is attached to target node, we should specialize.
            var result, i, iz, node, bodyFlags, that = this;

            result = [ stmt.kind ];

            bodyFlags = (flags & F_ALLOW_IN) ? S_TFFF : S_FFFF;

            function block() {
                node = stmt.declarations[0];
                if (extra.comment && node.leadingComments) {
                    result.push('\n');
                    result.push(addIndent(that.generateStatement(node, bodyFlags)));
                } else {
                    result.push(noEmptySpace());
                    result.push(that.generateStatement(node, bodyFlags));
                }

                for (i = 1, iz = stmt.declarations.length; i < iz; ++i) {
                    node = stmt.declarations[i];
                    if (extra.comment && node.leadingComments) {
                        result.push(',' + newline);
                        result.push(addIndent(that.generateStatement(node, bodyFlags)));
                    } else {
                        result.push(',' + space);
                        result.push(that.generateStatement(node, bodyFlags));
                    }
                }
            }

            if (stmt.declarations.length > 1) {
                withIndent(block);
            } else {
                block();
            }

            result.push(this.semicolon(flags));

            return result;
        },

        ThrowStatement: function (stmt, flags) {
            return [join(
                'throw',
                this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
            ), this.semicolon(flags)];
        },

        TryStatement: function (stmt, flags) {
            var result, i, iz, guardedHandlers;

            result = ['try', this.maybeBlock(stmt.block, S_TFFF)];
            result = this.maybeBlockSuffix(stmt.block, result);

            if (stmt.handlers) {
                // old interface
                for (i = 0, iz = stmt.handlers.length; i < iz; ++i) {
                    result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF));
                    if (stmt.finalizer || i + 1 !== iz) {
                        result = this.maybeBlockSuffix(stmt.handlers[i].body, result);
                    }
                }
            } else {
                guardedHandlers = stmt.guardedHandlers || [];

                for (i = 0, iz = guardedHandlers.length; i < iz; ++i) {
                    result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF));
                    if (stmt.finalizer || i + 1 !== iz) {
                        result = this.maybeBlockSuffix(guardedHandlers[i].body, result);
                    }
                }

                // new interface
                if (stmt.handler) {
                    if (Array.isArray(stmt.handler)) {
                        for (i = 0, iz = stmt.handler.length; i < iz; ++i) {
                            result = join(result, this.generateStatement(stmt.handler[i], S_TFFF));
                            if (stmt.finalizer || i + 1 !== iz) {
                                result = this.maybeBlockSuffix(stmt.handler[i].body, result);
                            }
                        }
                    } else {
                        result = join(result, this.generateStatement(stmt.handler, S_TFFF));
                        if (stmt.finalizer) {
                            result = this.maybeBlockSuffix(stmt.handler.body, result);
                        }
                    }
                }
            }
            if (stmt.finalizer) {
                result = join(result, ['finally', this.maybeBlock(stmt.finalizer, S_TFFF)]);
            }
            return result;
        },

        SwitchStatement: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags, that = this;
            withIndent(function () {
                result = [
                    'switch' + space + '(',
                    that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT),
                    ')' + space + '{' + newline
                ];
            });
            if (stmt.cases) {
                bodyFlags = S_TFFF;
                for (i = 0, iz = stmt.cases.length; i < iz; ++i) {
                    if (i === iz - 1) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }
                    fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags));
                    result.push(fragment);
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        result.push(newline);
                    }
                }
            }
            result.push(addIndent('}'));
            return result;
        },

        SwitchCase: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags, that = this;
            withIndent(function () {
                if (stmt.test) {
                    result = [
                        join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)),
                        ':'
                    ];
                } else {
                    result = ['default:'];
                }

                i = 0;
                iz = stmt.consequent.length;
                if (iz && stmt.consequent[0].type === Syntax.BlockStatement) {
                    fragment = that.maybeBlock(stmt.consequent[0], S_TFFF);
                    result.push(fragment);
                    i = 1;
                }

                if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                    result.push(newline);
                }

                bodyFlags = S_TFFF;
                for (; i < iz; ++i) {
                    if (i === iz - 1 && flags & F_SEMICOLON_OPT) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }
                    fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags));
                    result.push(fragment);
                    if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        result.push(newline);
                    }
                }
            });
            return result;
        },

        IfStatement: function (stmt, flags) {
            var result, bodyFlags, semicolonOptional, that = this;
            withIndent(function () {
                result = [
                    'if' + space + '(',
                    that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            semicolonOptional = flags & F_SEMICOLON_OPT;
            bodyFlags = S_TFFF;
            if (semicolonOptional) {
                bodyFlags |= F_SEMICOLON_OPT;
            }
            if (stmt.alternate) {
                result.push(this.maybeBlock(stmt.consequent, S_TFFF));
                result = this.maybeBlockSuffix(stmt.consequent, result);
                if (stmt.alternate.type === Syntax.IfStatement) {
                    result = join(result, ['else ', this.generateStatement(stmt.alternate, bodyFlags)]);
                } else {
                    result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags)));
                }
            } else {
                result.push(this.maybeBlock(stmt.consequent, bodyFlags));
            }
            return result;
        },

        ForStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = ['for' + space + '('];
                if (stmt.init) {
                    if (stmt.init.type === Syntax.VariableDeclaration) {
                        result.push(that.generateStatement(stmt.init, S_FFFF));
                    } else {
                        // F_ALLOW_IN becomes false.
                        result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT));
                        result.push(';');
                    }
                } else {
                    result.push(';');
                }

                if (stmt.test) {
                    result.push(space);
                    result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT));
                    result.push(';');
                } else {
                    result.push(';');
                }

                if (stmt.update) {
                    result.push(space);
                    result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT));
                    result.push(')');
                } else {
                    result.push(')');
                }
            });

            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        },

        ForInStatement: function (stmt, flags) {
            return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },

        ForOfStatement: function (stmt, flags) {
            return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },

        LabeledStatement: function (stmt, flags) {
            return [stmt.label.name + ':', this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)];
        },

        Program: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags;
            iz = stmt.body.length;
            result = [safeConcatenation && iz > 0 ? '\n' : ''];
            bodyFlags = S_TFTF;
            for (i = 0; i < iz; ++i) {
                if (!safeConcatenation && i === iz - 1) {
                    bodyFlags |= F_SEMICOLON_OPT;
                }

                if (preserveBlankLines) {
                    // handle spaces before the first line
                    if (i === 0) {
                        if (!stmt.body[0].leadingComments) {
                            generateBlankLines(stmt.range[0], stmt.body[i].range[0], result);
                        }
                    }

                    // handle spaces between lines
                    if (i > 0) {
                        if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
                            generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                        }
                    }
                }

                fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags));
                result.push(fragment);
                if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                    if (preserveBlankLines) {
                        if (!stmt.body[i + 1].leadingComments) {
                            result.push(newline);
                        }
                    } else {
                        result.push(newline);
                    }
                }

                if (preserveBlankLines) {
                    // handle spaces after the last line
                    if (i === iz - 1) {
                        if (!stmt.body[i].trailingComments) {
                            generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                        }
                    }
                }
            }
            return result;
        },

        FunctionDeclaration: function (stmt, flags) {
            return [
                generateAsyncPrefix(stmt, true),
                'function',
                generateStarSuffix(stmt) || noEmptySpace(),
                stmt.id ? generateIdentifier(stmt.id) : '',
                this.generateFunctionBody(stmt)
            ];
        },

        ReturnStatement: function (stmt, flags) {
            if (stmt.argument) {
                return [join(
                    'return',
                    this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
                ), this.semicolon(flags)];
            }
            return ['return' + this.semicolon(flags)];
        },

        WhileStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = [
                    'while' + space + '(',
                    that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        },

        WithStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = [
                    'with' + space + '(',
                    that.generateExpression(stmt.object, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        }

    };

    merge(CodeGenerator.prototype, CodeGenerator.Statement);

    // Expressions.

    CodeGenerator.Expression = {

        SequenceExpression: function (expr, precedence, flags) {
            var result, i, iz;
            if (Precedence.Sequence < precedence) {
                flags |= F_ALLOW_IN;
            }
            result = [];
            for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
                result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags));
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }
            return parenthesize(result, Precedence.Sequence, precedence);
        },

        AssignmentExpression: function (expr, precedence, flags) {
            return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
        },

        ArrowFunctionExpression: function (expr, precedence, flags) {
            return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence);
        },

        ConditionalExpression: function (expr, precedence, flags) {
            if (Precedence.Conditional < precedence) {
                flags |= F_ALLOW_IN;
            }
            return parenthesize(
                [
                    this.generateExpression(expr.test, Precedence.LogicalOR, flags),
                    space + '?' + space,
                    this.generateExpression(expr.consequent, Precedence.Assignment, flags),
                    space + ':' + space,
                    this.generateExpression(expr.alternate, Precedence.Assignment, flags)
                ],
                Precedence.Conditional,
                precedence
            );
        },

        LogicalExpression: function (expr, precedence, flags) {
            return this.BinaryExpression(expr, precedence, flags);
        },

        BinaryExpression: function (expr, precedence, flags) {
            var result, currentPrecedence, fragment, leftSource;
            currentPrecedence = BinaryPrecedence[expr.operator];

            if (currentPrecedence < precedence) {
                flags |= F_ALLOW_IN;
            }

            fragment = this.generateExpression(expr.left, currentPrecedence, flags);

            leftSource = fragment.toString();

            if (leftSource.charCodeAt(leftSource.length - 1) === 0x2F /* / */ && esutils.code.isIdentifierPartES5(expr.operator.charCodeAt(0))) {
                result = [fragment, noEmptySpace(), expr.operator];
            } else {
                result = join(fragment, expr.operator);
            }

            fragment = this.generateExpression(expr.right, currentPrecedence + 1, flags);

            if (expr.operator === '/' && fragment.toString().charAt(0) === '/' ||
            expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') {
                // If '/' concats with '/' or `<` concats with `!--`, it is interpreted as comment start
                result.push(noEmptySpace());
                result.push(fragment);
            } else {
                result = join(result, fragment);
            }

            if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) {
                return ['(', result, ')'];
            }
            return parenthesize(result, currentPrecedence, precedence);
        },

        CallExpression: function (expr, precedence, flags) {
            var result, i, iz;
            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
            result.push('(');
            for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
                result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }
            result.push(')');

            if (!(flags & F_ALLOW_CALL)) {
                return ['(', result, ')'];
            }
            return parenthesize(result, Precedence.Call, precedence);
        },

        NewExpression: function (expr, precedence, flags) {
            var result, length, i, iz, itemFlags;
            length = expr['arguments'].length;

            // F_ALLOW_CALL becomes false.
            // F_ALLOW_UNPARATH_NEW may become false.
            itemFlags = (flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0) ? E_TFT : E_TFF;

            result = join(
                'new',
                this.generateExpression(expr.callee, Precedence.New, itemFlags)
            );

            if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) {
                result.push('(');
                for (i = 0, iz = length; i < iz; ++i) {
                    result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
                    if (i + 1 < iz) {
                        result.push(',' + space);
                    }
                }
                result.push(')');
            }

            return parenthesize(result, Precedence.New, precedence);
        },

        MemberExpression: function (expr, precedence, flags) {
            var result, fragment;

            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)];

            if (expr.computed) {
                result.push('[');
                result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
                result.push(']');
            } else {
                if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
                    fragment = toSourceNodeWhenNeeded(result).toString();
                    // When the following conditions are all true,
                    //   1. No floating point
                    //   2. Don't have exponents
                    //   3. The last character is a decimal digit
                    //   4. Not hexadecimal OR octal number literal
                    // we should add a floating point.
                    if (
                            fragment.indexOf('.') < 0 &&
                            !/[eExX]/.test(fragment) &&
                            esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) &&
                            !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)  // '0'
                            ) {
                        result.push(' ');
                    }
                }
                result.push('.');
                result.push(generateIdentifier(expr.property));
            }

            return parenthesize(result, Precedence.Member, precedence);
        },

        MetaProperty: function (expr, precedence, flags) {
            var result;
            result = [];
            result.push(typeof expr.meta === "string" ? expr.meta : generateIdentifier(expr.meta));
            result.push('.');
            result.push(typeof expr.property === "string" ? expr.property : generateIdentifier(expr.property));
            return parenthesize(result, Precedence.Member, precedence);
        },

        UnaryExpression: function (expr, precedence, flags) {
            var result, fragment, rightCharCode, leftSource, leftCharCode;
            fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT);

            if (space === '') {
                result = join(expr.operator, fragment);
            } else {
                result = [expr.operator];
                if (expr.operator.length > 2) {
                    // delete, void, typeof
                    // get `typeof []`, not `typeof[]`
                    result = join(result, fragment);
                } else {
                    // Prevent inserting spaces between operator and argument if it is unnecessary
                    // like, `!cond`
                    leftSource = toSourceNodeWhenNeeded(result).toString();
                    leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
                    rightCharCode = fragment.toString().charCodeAt(0);

                    if (((leftCharCode === 0x2B  /* + */ || leftCharCode === 0x2D  /* - */) && leftCharCode === rightCharCode) ||
                            (esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode))) {
                        result.push(noEmptySpace());
                        result.push(fragment);
                    } else {
                        result.push(fragment);
                    }
                }
            }
            return parenthesize(result, Precedence.Unary, precedence);
        },

        YieldExpression: function (expr, precedence, flags) {
            var result;
            if (expr.delegate) {
                result = 'yield*';
            } else {
                result = 'yield';
            }
            if (expr.argument) {
                result = join(
                    result,
                    this.generateExpression(expr.argument, Precedence.Yield, E_TTT)
                );
            }
            return parenthesize(result, Precedence.Yield, precedence);
        },

        AwaitExpression: function (expr, precedence, flags) {
            var result = join(
                expr.all ? 'await*' : 'await',
                this.generateExpression(expr.argument, Precedence.Await, E_TTT)
            );
            return parenthesize(result, Precedence.Await, precedence);
        },

        UpdateExpression: function (expr, precedence, flags) {
            if (expr.prefix) {
                return parenthesize(
                    [
                        expr.operator,
                        this.generateExpression(expr.argument, Precedence.Unary, E_TTT)
                    ],
                    Precedence.Unary,
                    precedence
                );
            }
            return parenthesize(
                [
                    this.generateExpression(expr.argument, Precedence.Postfix, E_TTT),
                    expr.operator
                ],
                Precedence.Postfix,
                precedence
            );
        },

        FunctionExpression: function (expr, precedence, flags) {
            var result = [
                generateAsyncPrefix(expr, true),
                'function'
            ];
            if (expr.id) {
                result.push(generateStarSuffix(expr) || noEmptySpace());
                result.push(generateIdentifier(expr.id));
            } else {
                result.push(generateStarSuffix(expr) || space);
            }
            result.push(this.generateFunctionBody(expr));
            return result;
        },

        ArrayPattern: function (expr, precedence, flags) {
            return this.ArrayExpression(expr, precedence, flags, true);
        },

        ArrayExpression: function (expr, precedence, flags, isPattern) {
            var result, multiline, that = this;
            if (!expr.elements.length) {
                return '[]';
            }
            multiline = isPattern ? false : expr.elements.length > 1;
            result = ['[', multiline ? newline : ''];
            withIndent(function (indent) {
                var i, iz;
                for (i = 0, iz = expr.elements.length; i < iz; ++i) {
                    if (!expr.elements[i]) {
                        if (multiline) {
                            result.push(indent);
                        }
                        if (i + 1 === iz) {
                            result.push(',');
                        }
                    } else {
                        result.push(multiline ? indent : '');
                        result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT));
                    }
                    if (i + 1 < iz) {
                        result.push(',' + (multiline ? newline : space));
                    }
                }
            });
            if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(multiline ? base : '');
            result.push(']');
            return result;
        },

        RestElement: function(expr, precedence, flags) {
            return '...' + this.generatePattern(expr.argument);
        },

        ClassExpression: function (expr, precedence, flags) {
            var result, fragment;
            result = ['class'];
            if (expr.id) {
                result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT));
            }
            if (expr.superClass) {
                fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Assignment, E_TTT));
                result = join(result, fragment);
            }
            result.push(space);
            result.push(this.generateStatement(expr.body, S_TFFT));
            return result;
        },

        MethodDefinition: function (expr, precedence, flags) {
            var result, fragment;
            if (expr['static']) {
                result = ['static' + space];
            } else {
                result = [];
            }
            if (expr.kind === 'get' || expr.kind === 'set') {
                fragment = [
                    join(expr.kind, this.generatePropertyKey(expr.key, expr.computed)),
                    this.generateFunctionBody(expr.value)
                ];
            } else {
                fragment = [
                    generateMethodPrefix(expr),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }
            return join(result, fragment);
        },

        Property: function (expr, precedence, flags) {
            if (expr.kind === 'get' || expr.kind === 'set') {
                return [
                    expr.kind, noEmptySpace(),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }

            if (expr.shorthand) {
                if (expr.value.type === "AssignmentPattern") {
                    return this.AssignmentPattern(expr.value, Precedence.Sequence, E_TTT);
                }
                return this.generatePropertyKey(expr.key, expr.computed);
            }

            if (expr.method) {
                return [
                    generateMethodPrefix(expr),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }

            return [
                this.generatePropertyKey(expr.key, expr.computed),
                ':' + space,
                this.generateExpression(expr.value, Precedence.Assignment, E_TTT)
            ];
        },

        ObjectExpression: function (expr, precedence, flags) {
            var multiline, result, fragment, that = this;

            if (!expr.properties.length) {
                return '{}';
            }
            multiline = expr.properties.length > 1;

            withIndent(function () {
                fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT);
            });

            if (!multiline) {
                // issues 4
                // Do not transform from
                //   dejavu.Class.declare({
                //       method2: function () {}
                //   });
                // to
                //   dejavu.Class.declare({method2: function () {
                //       }});
                if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                    return [ '{', space, fragment, space, '}' ];
                }
            }

            withIndent(function (indent) {
                var i, iz;
                result = [ '{', newline, indent, fragment ];

                if (multiline) {
                    result.push(',' + newline);
                    for (i = 1, iz = expr.properties.length; i < iz; ++i) {
                        result.push(indent);
                        result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                        if (i + 1 < iz) {
                            result.push(',' + newline);
                        }
                    }
                }
            });

            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(base);
            result.push('}');
            return result;
        },

        AssignmentPattern: function(expr, precedence, flags) {
            return this.generateAssignment(expr.left, expr.right, '=', precedence, flags);
        },

        ObjectPattern: function (expr, precedence, flags) {
            var result, i, iz, multiline, property, that = this;
            if (!expr.properties.length) {
                return '{}';
            }

            multiline = false;
            if (expr.properties.length === 1) {
                property = expr.properties[0];
                if (property.value.type !== Syntax.Identifier) {
                    multiline = true;
                }
            } else {
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    property = expr.properties[i];
                    if (!property.shorthand) {
                        multiline = true;
                        break;
                    }
                }
            }
            result = ['{', multiline ? newline : '' ];

            withIndent(function (indent) {
                var i, iz;
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    result.push(multiline ? indent : '');
                    result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                        result.push(',' + (multiline ? newline : space));
                    }
                }
            });

            if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(multiline ? base : '');
            result.push('}');
            return result;
        },

        ThisExpression: function (expr, precedence, flags) {
            return 'this';
        },

        Super: function (expr, precedence, flags) {
            return 'super';
        },

        Identifier: function (expr, precedence, flags) {
            return generateIdentifier(expr);
        },

        ImportDefaultSpecifier: function (expr, precedence, flags) {
            return generateIdentifier(expr.id || expr.local);
        },

        ImportNamespaceSpecifier: function (expr, precedence, flags) {
            var result = ['*'];
            var id = expr.id || expr.local;
            if (id) {
                result.push(space + 'as' + noEmptySpace() + generateIdentifier(id));
            }
            return result;
        },

        ImportSpecifier: function (expr, precedence, flags) {
            var imported = expr.imported;
            var result = [ imported.name ];
            var local = expr.local;
            if (local && local.name !== imported.name) {
                result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(local));
            }
            return result;
        },

        ExportSpecifier: function (expr, precedence, flags) {
            var local = expr.local;
            var result = [ local.name ];
            var exported = expr.exported;
            if (exported && exported.name !== local.name) {
                result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(exported));
            }
            return result;
        },

        Literal: function (expr, precedence, flags) {
            var raw;
            if (expr.hasOwnProperty('raw') && parse && extra.raw) {
                try {
                    raw = parse(expr.raw).body[0].expression;
                    if (raw.type === Syntax.Literal) {
                        if (raw.value === expr.value) {
                            return expr.raw;
                        }
                    }
                } catch (e) {
                    // not use raw property
                }
            }

            if (expr.value === null) {
                return 'null';
            }

            if (typeof expr.value === 'string') {
                return escapeString(expr.value);
            }

            if (typeof expr.value === 'number') {
                return generateNumber(expr.value);
            }

            if (typeof expr.value === 'boolean') {
                return expr.value ? 'true' : 'false';
            }

            if (expr.regex) {
              return '/' + expr.regex.pattern + '/' + expr.regex.flags;
            }
            return generateRegExp(expr.value);
        },

        GeneratorExpression: function (expr, precedence, flags) {
            return this.ComprehensionExpression(expr, precedence, flags);
        },

        ComprehensionExpression: function (expr, precedence, flags) {
            // GeneratorExpression should be parenthesized with (...), ComprehensionExpression with [...]
            // Due to https://bugzilla.mozilla.org/show_bug.cgi?id=883468 position of expr.body can differ in Spidermonkey and ES6

            var result, i, iz, fragment, that = this;
            result = (expr.type === Syntax.GeneratorExpression) ? ['('] : ['['];

            if (extra.moz.comprehensionExpressionStartsWithAssignment) {
                fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
                result.push(fragment);
            }

            if (expr.blocks) {
                withIndent(function () {
                    for (i = 0, iz = expr.blocks.length; i < iz; ++i) {
                        fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT);
                        if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) {
                            result = join(result, fragment);
                        } else {
                            result.push(fragment);
                        }
                    }
                });
            }

            if (expr.filter) {
                result = join(result, 'if' + space);
                fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT);
                result = join(result, [ '(', fragment, ')' ]);
            }

            if (!extra.moz.comprehensionExpressionStartsWithAssignment) {
                fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);

                result = join(result, fragment);
            }

            result.push((expr.type === Syntax.GeneratorExpression) ? ')' : ']');
            return result;
        },

        ComprehensionBlock: function (expr, precedence, flags) {
            var fragment;
            if (expr.left.type === Syntax.VariableDeclaration) {
                fragment = [
                    expr.left.kind, noEmptySpace(),
                    this.generateStatement(expr.left.declarations[0], S_FFFF)
                ];
            } else {
                fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT);
            }

            fragment = join(fragment, expr.of ? 'of' : 'in');
            fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT));

            return [ 'for' + space + '(', fragment, ')' ];
        },

        SpreadElement: function (expr, precedence, flags) {
            return [
                '...',
                this.generateExpression(expr.argument, Precedence.Assignment, E_TTT)
            ];
        },

        TaggedTemplateExpression: function (expr, precedence, flags) {
            var itemFlags = E_TTF;
            if (!(flags & F_ALLOW_CALL)) {
                itemFlags = E_TFF;
            }
            var result = [
                this.generateExpression(expr.tag, Precedence.Call, itemFlags),
                this.generateExpression(expr.quasi, Precedence.Primary, E_FFT)
            ];
            return parenthesize(result, Precedence.TaggedTemplate, precedence);
        },

        TemplateElement: function (expr, precedence, flags) {
            // Don't use "cooked". Since tagged template can use raw template
            // representation. So if we do so, it breaks the script semantics.
            return expr.value.raw;
        },

        TemplateLiteral: function (expr, precedence, flags) {
            var result, i, iz;
            result = [ '`' ];
            for (i = 0, iz = expr.quasis.length; i < iz; ++i) {
                result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT));
                if (i + 1 < iz) {
                    result.push('${' + space);
                    result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT));
                    result.push(space + '}');
                }
            }
            result.push('`');
            return result;
        },

        ModuleSpecifier: function (expr, precedence, flags) {
            return this.Literal(expr, precedence, flags);
        }

    };

    merge(CodeGenerator.prototype, CodeGenerator.Expression);

    CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) {
        var result, type;

        type = expr.type || Syntax.Property;

        if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) {
            return generateVerbatim(expr, precedence);
        }

        result = this[type](expr, precedence, flags);


        if (extra.comment) {
            result = addComments(expr, result);
        }
        return toSourceNodeWhenNeeded(result, expr);
    };

    CodeGenerator.prototype.generateStatement = function (stmt, flags) {
        var result,
            fragment;

        result = this[stmt.type](stmt, flags);

        // Attach comments

        if (extra.comment) {
            result = addComments(stmt, result);
        }

        fragment = toSourceNodeWhenNeeded(result).toString();
        if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' &&  fragment.charAt(fragment.length - 1) === '\n') {
            result = sourceMap ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, '');
        }

        return toSourceNodeWhenNeeded(result, stmt);
    };

    function generateInternal(node) {
        var codegen;

        codegen = new CodeGenerator();
        if (isStatement(node)) {
            return codegen.generateStatement(node, S_TFFF);
        }

        if (isExpression(node)) {
            return codegen.generateExpression(node, Precedence.Sequence, E_TTT);
        }

        throw new Error('Unknown node type: ' + node.type);
    }

    function generate(node, options) {
        var defaultOptions = getDefaultOptions(), result, pair;

        if (options != null) {
            // Obsolete options
            //
            //   `options.indent`
            //   `options.base`
            //
            // Instead of them, we can use `option.format.indent`.
            if (typeof options.indent === 'string') {
                defaultOptions.format.indent.style = options.indent;
            }
            if (typeof options.base === 'number') {
                defaultOptions.format.indent.base = options.base;
            }
            options = updateDeeply(defaultOptions, options);
            indent = options.format.indent.style;
            if (typeof options.base === 'string') {
                base = options.base;
            } else {
                base = stringRepeat(indent, options.format.indent.base);
            }
        } else {
            options = defaultOptions;
            indent = options.format.indent.style;
            base = stringRepeat(indent, options.format.indent.base);
        }
        json = options.format.json;
        renumber = options.format.renumber;
        hexadecimal = json ? false : options.format.hexadecimal;
        quotes = json ? 'double' : options.format.quotes;
        escapeless = options.format.escapeless;
        newline = options.format.newline;
        space = options.format.space;
        if (options.format.compact) {
            newline = space = indent = base = '';
        }
        parentheses = options.format.parentheses;
        semicolons = options.format.semicolons;
        safeConcatenation = options.format.safeConcatenation;
        directive = options.directive;
        parse = json ? null : options.parse;
        sourceMap = options.sourceMap;
        sourceCode = options.sourceCode;
        preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null;
        extra = options;

        if (sourceMap) {
            if (!exports.browser) {
                // We assume environment is node.js
                // And prevent from including source-map by browserify
                SourceNode = __webpack_require__(/*! source-map */ 377).SourceNode;
            } else {
                SourceNode = global.sourceMap.SourceNode;
            }
        }

        result = generateInternal(node);

        if (!sourceMap) {
            pair = {code: result.toString(), map: null};
            return options.sourceMapWithCode ? pair : pair.code;
        }


        pair = result.toStringWithSourceMap({
            file: options.file,
            sourceRoot: options.sourceMapRoot
        });

        if (options.sourceContent) {
            pair.map.setSourceContent(options.sourceMap,
                                      options.sourceContent);
        }

        if (options.sourceMapWithCode) {
            return pair;
        }

        return pair.map.toString();
    }

    FORMAT_MINIFY = {
        indent: {
            style: '',
            base: 0
        },
        renumber: true,
        hexadecimal: true,
        quotes: 'auto',
        escapeless: true,
        compact: true,
        parentheses: false,
        semicolons: false
    };

    FORMAT_DEFAULTS = getDefaultOptions().format;

    exports.version = __webpack_require__(/*! ./package.json */ 370).version;
    exports.generate = generate;
    exports.attachComments = estraverse.attachComments;
    exports.Precedence = updateDeeply({}, Precedence);
    exports.browser = false;
    exports.FORMAT_MINIFY = FORMAT_MINIFY;
    exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86)))

/***/ }),
/* 176 */,
/* 177 */,
/* 178 */,
/* 179 */,
/* 180 */,
/* 181 */,
/* 182 */,
/* 183 */
/*!************************************************!*\
  !*** ./node_modules/pako/lib/zlib/messages.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

module.exports = {
  2:      'need dictionary',     /* Z_NEED_DICT       2  */
  1:      'stream end',          /* Z_STREAM_END      1  */
  0:      '',                    /* Z_OK              0  */
  '-1':   'file error',          /* Z_ERRNO         (-1) */
  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
};


/***/ }),
/* 184 */
/*!*****************************************!*\
  !*** ./node_modules/jszip/lib/crc32.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ./utils */ 60);

/**
 * The following functions come from pako, from pako/lib/zlib/crc32.js
 * released under the MIT license, see pako https://github.com/nodeca/pako/
 */

// Use ordinary array, since untyped makes no boost here
function makeTable() {
    var c, table = [];

    for(var n =0; n < 256; n++){
        c = n;
        for(var k =0; k < 8; k++){
            c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
        }
        table[n] = c;
    }

    return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
    var t = crcTable, end = pos + len;

    crc = crc ^ (-1);

    for (var i = pos; i < end; i++ ) {
        crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
    }

    return (crc ^ (-1)); // >>> 0;
}

// That's all for the pako functions.

/**
 * Compute the crc32 of a string.
 * This is almost the same as the function crc32, but for strings. Using the
 * same function for the two use cases leads to horrible performances.
 * @param {Number} crc the starting value of the crc.
 * @param {String} str the string to use.
 * @param {Number} len the length of the string.
 * @param {Number} pos the starting position for the crc32 computation.
 * @return {Number} the computed crc32.
 */
function crc32str(crc, str, len, pos) {
    var t = crcTable, end = pos + len;

    crc = crc ^ (-1);

    for (var i = pos; i < end; i++ ) {
        crc = (crc >>> 8) ^ t[(crc ^ str.charCodeAt(i)) & 0xFF];
    }

    return (crc ^ (-1)); // >>> 0;
}

module.exports = function crc32wrapper(input, crc) {
    if (typeof input === "undefined" || !input.length) {
        return 0;
    }

    var isArray = utils.getTypeOf(input) !== "string";

    if(isArray) {
        return crc32(crc|0, input, input.length, 0);
    } else {
        return crc32str(crc|0, input, input.length, 0);
    }
};


/***/ }),
/* 185 */
/*!****************************************************!*\
  !*** ./node_modules/jszip/lib/compressedObject.js ***!
  \****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var external = __webpack_require__(/*! ./external */ 143);
var DataWorker = __webpack_require__(/*! ./stream/DataWorker */ 222);
var DataLengthProbe = __webpack_require__(/*! ./stream/DataLengthProbe */ 221);
var Crc32Probe = __webpack_require__(/*! ./stream/Crc32Probe */ 220);
var DataLengthProbe = __webpack_require__(/*! ./stream/DataLengthProbe */ 221);

/**
 * Represent a compressed object, with everything needed to decompress it.
 * @constructor
 * @param {number} compressedSize the size of the data compressed.
 * @param {number} uncompressedSize the size of the data after decompression.
 * @param {number} crc32 the crc32 of the decompressed file.
 * @param {object} compression the type of compression, see lib/compressions.js.
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the compressed data.
 */
function CompressedObject(compressedSize, uncompressedSize, crc32, compression, data) {
    this.compressedSize = compressedSize;
    this.uncompressedSize = uncompressedSize;
    this.crc32 = crc32;
    this.compression = compression;
    this.compressedContent = data;
}

CompressedObject.prototype = {
    /**
     * Create a worker to get the uncompressed content.
     * @return {GenericWorker} the worker.
     */
    getContentWorker : function () {
        var worker = new DataWorker(external.Promise.resolve(this.compressedContent))
        .pipe(this.compression.uncompressWorker())
        .pipe(new DataLengthProbe("data_length"));

        var that = this;
        worker.on("end", function () {
            if(this.streamInfo['data_length'] !== that.uncompressedSize) {
                throw new Error("Bug : uncompressed data size mismatch");
            }
        });
        return worker;
    },
    /**
     * Create a worker to get the compressed content.
     * @return {GenericWorker} the worker.
     */
    getCompressedWorker : function () {
        return new DataWorker(external.Promise.resolve(this.compressedContent))
        .withStreamInfo("compressedSize", this.compressedSize)
        .withStreamInfo("uncompressedSize", this.uncompressedSize)
        .withStreamInfo("crc32", this.crc32)
        .withStreamInfo("compression", this.compression)
        ;
    }
};

/**
 * Chain the given worker with other workers to compress the content with the
 * given compresion.
 * @param {GenericWorker} uncompressedWorker the worker to pipe.
 * @param {Object} compression the compression object.
 * @param {Object} compressionOptions the options to use when compressing.
 * @return {GenericWorker} the new worker compressing the content.
 */
CompressedObject.createWorkerFrom = function (uncompressedWorker, compression, compressionOptions) {
    return uncompressedWorker
    .pipe(new Crc32Probe())
    .pipe(new DataLengthProbe("uncompressedSize"))
    .pipe(compression.compressWorker(compressionOptions))
    .pipe(new DataLengthProbe("compressedSize"))
    .withStreamInfo("compression", compression);
};

module.exports = CompressedObject;


/***/ }),
/* 186 */
/*!*********************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_descriptors.js ***!
  \*********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// Thank's IE8 for his funny defineProperty
module.exports = !__webpack_require__(/*! ./_fails */ 226)(function(){
  return Object.defineProperty({}, 'a', {get: function(){ return 7; }}).a != 7;
});

/***/ }),
/* 187 */
/*!*******************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_is-object.js ***!
  \*******************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function(it){
  return typeof it === 'object' ? it !== null : typeof it === 'function';
};

/***/ }),
/* 188 */
/*!**************************************************************!*\
  !*** ./node_modules/readable-stream/lib/_stream_writable.js ***!
  \**************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(process, setImmediate, global) {// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.



/*<replacement>*/

var processNextTick = __webpack_require__(/*! process-nextick-args */ 157).nextTick;
/*</replacement>*/

module.exports = Writable;

/* <replacement> */
function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;
  this.finish = function () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;

/*<replacement>*/
var util = __webpack_require__(/*! core-util-is */ 144);
util.inherits = __webpack_require__(/*! inherits */ 124);
/*</replacement>*/

/*<replacement>*/
var internalUtil = {
  deprecate: __webpack_require__(/*! util-deprecate */ 429)
};
/*</replacement>*/

/*<replacement>*/
var Stream = __webpack_require__(/*! ./internal/streams/stream */ 233);
/*</replacement>*/

/*<replacement>*/

var Buffer = __webpack_require__(/*! safe-buffer */ 156).Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

var destroyImpl = __webpack_require__(/*! ./internal/streams/destroy */ 232);

util.inherits(Writable, Stream);

function nop() {}

function WritableState(options, stream) {
  Duplex = Duplex || __webpack_require__(/*! ./_stream_duplex */ 123);

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var writableHwm = options.writableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // if _final has been called
  this.finalCalled = false;

  // drain event flag.
  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // has it been destroyed
  this.destroyed = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function (er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;

  // count buffered requests
  this.bufferedRequestCount = 0;

  // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two
  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || __webpack_require__(/*! ./_stream_duplex */ 123);

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
    return new Writable(options);
  }

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;

    if (typeof options.writev === 'function') this._writev = options.writev;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;

    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
  this.emit('error', new Error('Cannot pipe, not readable'));
};

function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  processNextTick(cb, er);
}

// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;

  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    processNextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;
  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function () {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);
    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    processNextTick(cb, er);
    // this can emit finish, and it will always happen
    // after error
    processNextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
    // this can emit finish, but finish must
    // always follow error
    finishMaybe(stream, state);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      /*<replacement>*/
      asyncWrite(afterWrite, stream, state, finished, cb);
      /*</replacement>*/
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}

// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;

    var count = 0;
    var allBuffers = true;
    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }
    buffer.allBuffers = allBuffers;

    doWrite(stream, state, true, state.length, buffer, '', holder.finish);

    // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite
    state.pendingcb++;
    state.lastBufferedRequest = null;
    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }
    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished) endWritable(this, state, cb);
};

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;
    if (err) {
      stream.emit('error', err);
    }
    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}
function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function') {
      state.pendingcb++;
      state.finalCalled = true;
      processNextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    prefinish(stream, state);
    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) processNextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;
  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  }
  if (state.corkedRequestsFree) {
    state.corkedRequestsFree.next = corkReq;
  } else {
    state.corkedRequestsFree = corkReq;
  }
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  get: function () {
    if (this._writableState === undefined) {
      return false;
    }
    return this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._writableState.destroyed = value;
  }
});

Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
  this.end();
  cb(err);
};
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../process/browser.js */ 146), __webpack_require__(/*! ./../../timers-browserify/main.js */ 431).setImmediate, __webpack_require__(/*! ./../../webpack/buildin/global.js */ 86)))

/***/ }),
/* 189 */
/*!**********************************************************!*\
  !*** ./node_modules/readable-stream/readable-browser.js ***!
  \**********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

exports = module.exports = __webpack_require__(/*! ./lib/_stream_readable.js */ 234);
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = __webpack_require__(/*! ./lib/_stream_writable.js */ 188);
exports.Duplex = __webpack_require__(/*! ./lib/_stream_duplex.js */ 123);
exports.Transform = __webpack_require__(/*! ./lib/_stream_transform.js */ 230);
exports.PassThrough = __webpack_require__(/*! ./lib/_stream_passthrough.js */ 428);


/***/ }),
/* 190 */
/*!*************************************************************!*\
  !*** ./node_modules/codemirror/addon/edit/matchbrackets.js ***!
  \*************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  var ie_lt8 = /MSIE \d/.test(navigator.userAgent) &&
    (document.documentMode == null || document.documentMode < 8);

  var Pos = CodeMirror.Pos;

  var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<", "<": ">>", ">": "<<"};

  function bracketRegex(config) {
    return config && config.bracketRegex || /[(){}[\]]/
  }

  function findMatchingBracket(cm, where, config) {
    var line = cm.getLineHandle(where.line), pos = where.ch - 1;
    var afterCursor = config && config.afterCursor
    if (afterCursor == null)
      afterCursor = /(^| )cm-fat-cursor($| )/.test(cm.getWrapperElement().className)
    var re = bracketRegex(config)

    // A cursor is defined as between two characters, but in in vim command mode
    // (i.e. not insert mode), the cursor is visually represented as a
    // highlighted box on top of the 2nd character. Otherwise, we allow matches
    // from before or after the cursor.
    var match = (!afterCursor && pos >= 0 && re.test(line.text.charAt(pos)) && matching[line.text.charAt(pos)]) ||
        re.test(line.text.charAt(pos + 1)) && matching[line.text.charAt(++pos)];
    if (!match) return null;
    var dir = match.charAt(1) == ">" ? 1 : -1;
    if (config && config.strict && (dir > 0) != (pos == where.ch)) return null;
    var style = cm.getTokenTypeAt(Pos(where.line, pos + 1));

    var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style || null, config);
    if (found == null) return null;
    return {from: Pos(where.line, pos), to: found && found.pos,
            match: found && found.ch == match.charAt(0), forward: dir > 0};
  }

  // bracketRegex is used to specify which type of bracket to scan
  // should be a regexp, e.g. /[[\]]/
  //
  // Note: If "where" is on an open bracket, then this bracket is ignored.
  //
  // Returns false when no bracket was found, null when it reached
  // maxScanLines and gave up
  function scanForBracket(cm, where, dir, style, config) {
    var maxScanLen = (config && config.maxScanLineLength) || 10000;
    var maxScanLines = (config && config.maxScanLines) || 1000;

    var stack = [];
    var re = bracketRegex(config)
    var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1)
                          : Math.max(cm.firstLine() - 1, where.line - maxScanLines);
    for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) {
      var line = cm.getLine(lineNo);
      if (!line) continue;
      var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1;
      if (line.length > maxScanLen) continue;
      if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0);
      for (; pos != end; pos += dir) {
        var ch = line.charAt(pos);
        if (re.test(ch) && (style === undefined || cm.getTokenTypeAt(Pos(lineNo, pos + 1)) == style)) {
          var match = matching[ch];
          if ((match.charAt(1) == ">") == (dir > 0)) stack.push(ch);
          else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch};
          else stack.pop();
        }
      }
    }
    return lineNo - dir == (dir > 0 ? cm.lastLine() : cm.firstLine()) ? false : null;
  }

  function matchBrackets(cm, autoclear, config) {
    // Disable brace matching in long lines, since it'll cause hugely slow updates
    var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000;
    var marks = [], ranges = cm.listSelections();
    for (var i = 0; i < ranges.length; i++) {
      var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, config);
      if (match && cm.getLine(match.from.line).length <= maxHighlightLen) {
        var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
        marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style}));
        if (match.to && cm.getLine(match.to.line).length <= maxHighlightLen)
          marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style}));
      }
    }

    if (marks.length) {
      // Kludge to work around the IE bug from issue #1193, where text
      // input stops going to the textare whever this fires.
      if (ie_lt8 && cm.state.focused) cm.focus();

      var clear = function() {
        cm.operation(function() {
          for (var i = 0; i < marks.length; i++) marks[i].clear();
        });
      };
      if (autoclear) setTimeout(clear, 800);
      else return clear;
    }
  }

  function doMatchBrackets(cm) {
    cm.operation(function() {
      if (cm.state.matchBrackets.currentlyHighlighted) {
        cm.state.matchBrackets.currentlyHighlighted();
        cm.state.matchBrackets.currentlyHighlighted = null;
      }
      cm.state.matchBrackets.currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets);
    });
  }

  CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      cm.off("cursorActivity", doMatchBrackets);
      if (cm.state.matchBrackets && cm.state.matchBrackets.currentlyHighlighted) {
        cm.state.matchBrackets.currentlyHighlighted();
        cm.state.matchBrackets.currentlyHighlighted = null;
      }
    }
    if (val) {
      cm.state.matchBrackets = typeof val == "object" ? val : {};
      cm.on("cursorActivity", doMatchBrackets);
    }
  });

  CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);});
  CodeMirror.defineExtension("findMatchingBracket", function(pos, config, oldConfig){
    // Backwards-compatibility kludge
    if (oldConfig || typeof config == "boolean") {
      if (!oldConfig) {
        config = config ? {strict: true} : null
      } else {
        oldConfig.strict = config
        config = oldConfig
      }
    }
    return findMatchingBracket(this, pos, config)
  });
  CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){
    return scanForBracket(this, pos, dir, style, config);
  });
});


/***/ }),
/* 191 */
/*!**************************************************************!*\
  !*** ./node_modules/codemirror/addon/search/searchcursor.js ***!
  \**************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43))
  else {}
})(function(CodeMirror) {
  "use strict"
  var Pos = CodeMirror.Pos

  function regexpFlags(regexp) {
    var flags = regexp.flags
    return flags != null ? flags : (regexp.ignoreCase ? "i" : "")
      + (regexp.global ? "g" : "")
      + (regexp.multiline ? "m" : "")
  }

  function ensureFlags(regexp, flags) {
    var current = regexpFlags(regexp), target = current
    for (var i = 0; i < flags.length; i++) if (target.indexOf(flags.charAt(i)) == -1)
      target += flags.charAt(i)
    return current == target ? regexp : new RegExp(regexp.source, target)
  }

  function maybeMultiline(regexp) {
    return /\\s|\\n|\n|\\W|\\D|\[\^/.test(regexp.source)
  }

  function searchRegexpForward(doc, regexp, start) {
    regexp = ensureFlags(regexp, "g")
    for (var line = start.line, ch = start.ch, last = doc.lastLine(); line <= last; line++, ch = 0) {
      regexp.lastIndex = ch
      var string = doc.getLine(line), match = regexp.exec(string)
      if (match)
        return {from: Pos(line, match.index),
                to: Pos(line, match.index + match[0].length),
                match: match}
    }
  }

  function searchRegexpForwardMultiline(doc, regexp, start) {
    if (!maybeMultiline(regexp)) return searchRegexpForward(doc, regexp, start)

    regexp = ensureFlags(regexp, "gm")
    var string, chunk = 1
    for (var line = start.line, last = doc.lastLine(); line <= last;) {
      // This grows the search buffer in exponentially-sized chunks
      // between matches, so that nearby matches are fast and don't
      // require concatenating the whole document (in case we're
      // searching for something that has tons of matches), but at the
      // same time, the amount of retries is limited.
      for (var i = 0; i < chunk; i++) {
        if (line > last) break
        var curLine = doc.getLine(line++)
        string = string == null ? curLine : string + "\n" + curLine
      }
      chunk = chunk * 2
      regexp.lastIndex = start.ch
      var match = regexp.exec(string)
      if (match) {
        var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
        var startLine = start.line + before.length - 1, startCh = before[before.length - 1].length
        return {from: Pos(startLine, startCh),
                to: Pos(startLine + inside.length - 1,
                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),
                match: match}
      }
    }
  }

  function lastMatchIn(string, regexp) {
    var cutOff = 0, match
    for (;;) {
      regexp.lastIndex = cutOff
      var newMatch = regexp.exec(string)
      if (!newMatch) return match
      match = newMatch
      cutOff = match.index + (match[0].length || 1)
      if (cutOff == string.length) return match
    }
  }

  function searchRegexpBackward(doc, regexp, start) {
    regexp = ensureFlags(regexp, "g")
    for (var line = start.line, ch = start.ch, first = doc.firstLine(); line >= first; line--, ch = -1) {
      var string = doc.getLine(line)
      if (ch > -1) string = string.slice(0, ch)
      var match = lastMatchIn(string, regexp)
      if (match)
        return {from: Pos(line, match.index),
                to: Pos(line, match.index + match[0].length),
                match: match}
    }
  }

  function searchRegexpBackwardMultiline(doc, regexp, start) {
    regexp = ensureFlags(regexp, "gm")
    var string, chunk = 1
    for (var line = start.line, first = doc.firstLine(); line >= first;) {
      for (var i = 0; i < chunk; i++) {
        var curLine = doc.getLine(line--)
        string = string == null ? curLine.slice(0, start.ch) : curLine + "\n" + string
      }
      chunk *= 2

      var match = lastMatchIn(string, regexp)
      if (match) {
        var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
        var startLine = line + before.length, startCh = before[before.length - 1].length
        return {from: Pos(startLine, startCh),
                to: Pos(startLine + inside.length - 1,
                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),
                match: match}
      }
    }
  }

  var doFold, noFold
  if (String.prototype.normalize) {
    doFold = function(str) { return str.normalize("NFD").toLowerCase() }
    noFold = function(str) { return str.normalize("NFD") }
  } else {
    doFold = function(str) { return str.toLowerCase() }
    noFold = function(str) { return str }
  }

  // Maps a position in a case-folded line back to a position in the original line
  // (compensating for codepoints increasing in number during folding)
  function adjustPos(orig, folded, pos, foldFunc) {
    if (orig.length == folded.length) return pos
    for (var min = 0, max = pos + Math.max(0, orig.length - folded.length);;) {
      if (min == max) return min
      var mid = (min + max) >> 1
      var len = foldFunc(orig.slice(0, mid)).length
      if (len == pos) return mid
      else if (len > pos) max = mid
      else min = mid + 1
    }
  }

  function searchStringForward(doc, query, start, caseFold) {
    // Empty string would match anything and never progress, so we
    // define it to match nothing instead.
    if (!query.length) return null
    var fold = caseFold ? doFold : noFold
    var lines = fold(query).split(/\r|\n\r?/)

    search: for (var line = start.line, ch = start.ch, last = doc.lastLine() + 1 - lines.length; line <= last; line++, ch = 0) {
      var orig = doc.getLine(line).slice(ch), string = fold(orig)
      if (lines.length == 1) {
        var found = string.indexOf(lines[0])
        if (found == -1) continue search
        var start = adjustPos(orig, string, found, fold) + ch
        return {from: Pos(line, adjustPos(orig, string, found, fold) + ch),
                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold) + ch)}
      } else {
        var cutFrom = string.length - lines[0].length
        if (string.slice(cutFrom) != lines[0]) continue search
        for (var i = 1; i < lines.length - 1; i++)
          if (fold(doc.getLine(line + i)) != lines[i]) continue search
        var end = doc.getLine(line + lines.length - 1), endString = fold(end), lastLine = lines[lines.length - 1]
        if (endString.slice(0, lastLine.length) != lastLine) continue search
        return {from: Pos(line, adjustPos(orig, string, cutFrom, fold) + ch),
                to: Pos(line + lines.length - 1, adjustPos(end, endString, lastLine.length, fold))}
      }
    }
  }

  function searchStringBackward(doc, query, start, caseFold) {
    if (!query.length) return null
    var fold = caseFold ? doFold : noFold
    var lines = fold(query).split(/\r|\n\r?/)

    search: for (var line = start.line, ch = start.ch, first = doc.firstLine() - 1 + lines.length; line >= first; line--, ch = -1) {
      var orig = doc.getLine(line)
      if (ch > -1) orig = orig.slice(0, ch)
      var string = fold(orig)
      if (lines.length == 1) {
        var found = string.lastIndexOf(lines[0])
        if (found == -1) continue search
        return {from: Pos(line, adjustPos(orig, string, found, fold)),
                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold))}
      } else {
        var lastLine = lines[lines.length - 1]
        if (string.slice(0, lastLine.length) != lastLine) continue search
        for (var i = 1, start = line - lines.length + 1; i < lines.length - 1; i++)
          if (fold(doc.getLine(start + i)) != lines[i]) continue search
        var top = doc.getLine(line + 1 - lines.length), topString = fold(top)
        if (topString.slice(topString.length - lines[0].length) != lines[0]) continue search
        return {from: Pos(line + 1 - lines.length, adjustPos(top, topString, top.length - lines[0].length, fold)),
                to: Pos(line, adjustPos(orig, string, lastLine.length, fold))}
      }
    }
  }

  function SearchCursor(doc, query, pos, options) {
    this.atOccurrence = false
    this.doc = doc
    pos = pos ? doc.clipPos(pos) : Pos(0, 0)
    this.pos = {from: pos, to: pos}

    var caseFold
    if (typeof options == "object") {
      caseFold = options.caseFold
    } else { // Backwards compat for when caseFold was the 4th argument
      caseFold = options
      options = null
    }

    if (typeof query == "string") {
      if (caseFold == null) caseFold = false
      this.matches = function(reverse, pos) {
        return (reverse ? searchStringBackward : searchStringForward)(doc, query, pos, caseFold)
      }
    } else {
      query = ensureFlags(query, "gm")
      if (!options || options.multiline !== false)
        this.matches = function(reverse, pos) {
          return (reverse ? searchRegexpBackwardMultiline : searchRegexpForwardMultiline)(doc, query, pos)
        }
      else
        this.matches = function(reverse, pos) {
          return (reverse ? searchRegexpBackward : searchRegexpForward)(doc, query, pos)
        }
    }
  }

  SearchCursor.prototype = {
    findNext: function() {return this.find(false)},
    findPrevious: function() {return this.find(true)},

    find: function(reverse) {
      var result = this.matches(reverse, this.doc.clipPos(reverse ? this.pos.from : this.pos.to))

      // Implements weird auto-growing behavior on null-matches for
      // backwards-compatiblity with the vim code (unfortunately)
      while (result && CodeMirror.cmpPos(result.from, result.to) == 0) {
        if (reverse) {
          if (result.from.ch) result.from = Pos(result.from.line, result.from.ch - 1)
          else if (result.from.line == this.doc.firstLine()) result = null
          else result = this.matches(reverse, this.doc.clipPos(Pos(result.from.line - 1)))
        } else {
          if (result.to.ch < this.doc.getLine(result.to.line).length) result.to = Pos(result.to.line, result.to.ch + 1)
          else if (result.to.line == this.doc.lastLine()) result = null
          else result = this.matches(reverse, Pos(result.to.line + 1, 0))
        }
      }

      if (result) {
        this.pos = result
        this.atOccurrence = true
        return this.pos.match || true
      } else {
        var end = Pos(reverse ? this.doc.firstLine() : this.doc.lastLine() + 1, 0)
        this.pos = {from: end, to: end}
        return this.atOccurrence = false
      }
    },

    from: function() {if (this.atOccurrence) return this.pos.from},
    to: function() {if (this.atOccurrence) return this.pos.to},

    replace: function(newText, origin) {
      if (!this.atOccurrence) return
      var lines = CodeMirror.splitLines(newText)
      this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin)
      this.pos.to = Pos(this.pos.from.line + lines.length - 1,
                        lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0))
    }
  }

  CodeMirror.defineExtension("getSearchCursor", function(query, pos, caseFold) {
    return new SearchCursor(this.doc, query, pos, caseFold)
  })
  CodeMirror.defineDocExtension("getSearchCursor", function(query, pos, caseFold) {
    return new SearchCursor(this, query, pos, caseFold)
  })

  CodeMirror.defineExtension("selectMatches", function(query, caseFold) {
    var ranges = []
    var cur = this.getSearchCursor(query, this.getCursor("from"), caseFold)
    while (cur.findNext()) {
      if (CodeMirror.cmpPos(cur.to(), this.getCursor("to")) > 0) break
      ranges.push({anchor: cur.from(), head: cur.to()})
    }
    if (ranges.length)
      this.setSelections(ranges, 0)
  })
});


/***/ }),
/* 192 */
/*!***************************************!*\
  !*** (webpack)/buildin/amd-define.js ***!
  \***************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function() {
	throw new Error("define cannot be used indirect");
};


/***/ }),
/* 193 */
/*!*********************************************************!*\
  !*** ./node_modules/js-beautify/js/lib/beautify-css.js ***!
  \*********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*jshint curly:false, eqeqeq:true, laxbreak:true, noempty:false */
/* AUTO-GENERATED. DO NOT MODIFY. */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.


 CSS Beautifier
---------------

    Written by Harutyun Amirjanyan, (amirjanyan@gmail.com)

    Based on code initially developed by: Einar Lielmanis, <einar@jsbeautifier.org>
        http://jsbeautifier.org/

    Usage:
        css_beautify(source_text);
        css_beautify(source_text, options);

    The options are (default in brackets):
        indent_size (4)                         — indentation size,
        indent_char (space)                     — character to indent with,
        selector_separator_newline (true)       - separate selectors with newline or
                                                  not (e.g. "a,\nbr" or "a, br")
        end_with_newline (false)                - end with a newline
        newline_between_rules (true)            - add a new line after every css rule
        space_around_selector_separator (false) - ensure space around selector separators:
                                                  '>', '+', '~' (e.g. "a>b" -> "a > b")
    e.g

    css_beautify(css_source_text, {
      'indent_size': 1,
      'indent_char': '\t',
      'selector_separator': ' ',
      'end_with_newline': false,
      'newline_between_rules': true,
      'space_around_selector_separator': true
    });
*/

// http://www.w3.org/TR/CSS21/syndata.html#tokenization
// http://www.w3.org/TR/css3-syntax/

(function() {
var legacy_beautify_css =
/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// identity function for calling harmony imports with the correct context
/******/ 	__webpack_require__.i = function(value) { return value; };
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 4);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

var mergeOpts = __webpack_require__(2).mergeOpts;
var acorn = __webpack_require__(1);
var Output = __webpack_require__(3).Output;


var lineBreak = acorn.lineBreak;
var allLineBreaks = acorn.allLineBreaks;

function Beautifier(source_text, options) {
    options = options || {};

    // Allow the setting of language/file-type specific options
    // with inheritance of overall settings
    options = mergeOpts(options, 'css');

    source_text = source_text || '';

    var newlinesFromLastWSEat = 0;
    var indentSize = options.indent_size ? parseInt(options.indent_size, 10) : 4;
    var indentCharacter = options.indent_char || ' ';
    var preserve_newlines = (options.preserve_newlines === undefined) ? false : options.preserve_newlines;
    var selectorSeparatorNewline = (options.selector_separator_newline === undefined) ? true : options.selector_separator_newline;
    var end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
    var newline_between_rules = (options.newline_between_rules === undefined) ? true : options.newline_between_rules;
    var space_around_combinator = (options.space_around_combinator === undefined) ? false : options.space_around_combinator;
    space_around_combinator = space_around_combinator || ((options.space_around_selector_separator === undefined) ? false : options.space_around_selector_separator);
    var eol = options.eol ? options.eol : 'auto';

    if (options.indent_with_tabs) {
        indentCharacter = '\t';
        indentSize = 1;
    }

    if (eol === 'auto') {
        eol = '\n';
        if (source_text && lineBreak.test(source_text || '')) {
            eol = source_text.match(lineBreak)[0];
        }
    }

    eol = eol.replace(/\\r/, '\r').replace(/\\n/, '\n');

    // HACK: newline parsing inconsistent. This brute force normalizes the input.
    source_text = source_text.replace(allLineBreaks, '\n');

    // tokenizer
    var whiteRe = /^\s+$/;

    var pos = -1,
        ch;
    var parenLevel = 0;

    function next() {
        ch = source_text.charAt(++pos);
        return ch || '';
    }

    function peek(skipWhitespace) {
        var result = '';
        var prev_pos = pos;
        if (skipWhitespace) {
            eatWhitespace();
        }
        result = source_text.charAt(pos + 1) || '';
        pos = prev_pos - 1;
        next();
        return result;
    }

    function eatString(endChars) {
        var start = pos;
        while (next()) {
            if (ch === "\\") {
                next();
            } else if (endChars.indexOf(ch) !== -1) {
                break;
            } else if (ch === "\n") {
                break;
            }
        }
        return source_text.substring(start, pos + 1);
    }

    function peekString(endChar) {
        var prev_pos = pos;
        var str = eatString(endChar);
        pos = prev_pos - 1;
        next();
        return str;
    }

    function eatWhitespace(preserve_newlines_local) {
        var result = 0;
        while (whiteRe.test(peek())) {
            next();
            if (ch === '\n' && preserve_newlines_local && preserve_newlines) {
                output.add_new_line(true);
                result++;
            }
        }
        newlinesFromLastWSEat = result;
        return result;
    }

    function skipWhitespace() {
        var result = '';
        if (ch && whiteRe.test(ch)) {
            result = ch;
        }
        while (whiteRe.test(next())) {
            result += ch;
        }
        return result;
    }

    function eatComment() {
        var start = pos;
        var singleLine = peek() === "/";
        next();
        while (next()) {
            if (!singleLine && ch === "*" && peek() === "/") {
                next();
                break;
            } else if (singleLine && ch === "\n") {
                return source_text.substring(start, pos);
            }
        }

        return source_text.substring(start, pos) + ch;
    }


    function lookBack(str) {
        return source_text.substring(pos - str.length, pos).toLowerCase() ===
            str;
    }

    // Nested pseudo-class if we are insideRule
    // and the next special character found opens
    // a new block
    function foundNestedPseudoClass() {
        var openParen = 0;
        for (var i = pos + 1; i < source_text.length; i++) {
            var ch = source_text.charAt(i);
            if (ch === "{") {
                return true;
            } else if (ch === '(') {
                // pseudoclasses can contain ()
                openParen += 1;
            } else if (ch === ')') {
                if (openParen === 0) {
                    return false;
                }
                openParen -= 1;
            } else if (ch === ";" || ch === "}") {
                return false;
            }
        }
        return false;
    }

    // printer
    var baseIndentString = '';
    var preindent_index = 0;
    if (source_text && source_text.length) {
        while ((source_text.charAt(preindent_index) === ' ' ||
                source_text.charAt(preindent_index) === '\t')) {
            preindent_index += 1;
        }
        baseIndentString = source_text.substring(0, preindent_index);
        source_text = source_text.substring(preindent_index);
    }


    var singleIndent = new Array(indentSize + 1).join(indentCharacter);
    var indentLevel;
    var nestedLevel;
    var output;

    function print_string(output_string) {
        if (output.just_added_newline()) {
            output.set_indent(indentLevel);
        }
        output.add_token(output_string);
    }

    function preserveSingleSpace(isAfterSpace) {
        if (isAfterSpace) {
            output.space_before_token = true;
        }
    }

    function indent() {
        indentLevel++;
    }

    function outdent() {
        if (indentLevel > 0) {
            indentLevel--;
        }
    }

    /*_____________________--------------------_____________________*/

    this.beautify = function() {
        // reset
        output = new Output(singleIndent, baseIndentString);
        indentLevel = 0;
        nestedLevel = 0;

        pos = -1;
        ch = null;
        parenLevel = 0;

        var insideRule = false;
        var insidePropertyValue = false;
        var enteringConditionalGroup = false;
        var top_ch = '';
        var last_top_ch = '';

        while (true) {
            var whitespace = skipWhitespace();
            var isAfterSpace = whitespace !== '';
            var isAfterNewline = whitespace.indexOf('\n') !== -1;
            last_top_ch = top_ch;
            top_ch = ch;

            if (!ch) {
                break;
            } else if (ch === '/' && peek() === '*') { /* css comment */
                var header = indentLevel === 0;

                if (isAfterNewline || header) {
                    output.add_new_line();
                }

                print_string(eatComment());
                output.add_new_line();
                if (header) {
                    output.add_new_line(true);
                }
            } else if (ch === '/' && peek() === '/') { // single line comment
                if (!isAfterNewline && last_top_ch !== '{') {
                    output.trim(true);
                }
                output.space_before_token = true;
                print_string(eatComment());
                output.add_new_line();
            } else if (ch === '@') {
                preserveSingleSpace(isAfterSpace);

                // deal with less propery mixins @{...}
                if (peek() === '{') {
                    print_string(eatString('}'));
                } else {
                    print_string(ch);

                    // strip trailing space, if present, for hash property checks
                    var variableOrRule = peekString(": ,;{}()[]/='\"");

                    if (variableOrRule.match(/[ :]$/)) {
                        // we have a variable or pseudo-class, add it and insert one space before continuing
                        next();
                        variableOrRule = eatString(": ").replace(/\s$/, '');
                        print_string(variableOrRule);
                        output.space_before_token = true;
                    }

                    variableOrRule = variableOrRule.replace(/\s$/, '');

                    // might be a nesting at-rule
                    if (variableOrRule in this.NESTED_AT_RULE) {
                        nestedLevel += 1;
                        if (variableOrRule in this.CONDITIONAL_GROUP_RULE) {
                            enteringConditionalGroup = true;
                        }
                    }
                }
            } else if (ch === '#' && peek() === '{') {
                preserveSingleSpace(isAfterSpace);
                print_string(eatString('}'));
            } else if (ch === '{') {
                if (peek(true) === '}') {
                    eatWhitespace();
                    next();
                    output.space_before_token = true;
                    print_string("{}");
                    if (!eatWhitespace(true)) {
                        output.add_new_line();
                    }

                    if (newlinesFromLastWSEat < 2 && newline_between_rules && indentLevel === 0) {
                        output.add_new_line(true);
                    }
                } else {
                    indent();
                    output.space_before_token = true;
                    print_string(ch);
                    if (!eatWhitespace(true)) {
                        output.add_new_line();
                    }

                    // when entering conditional groups, only rulesets are allowed
                    if (enteringConditionalGroup) {
                        enteringConditionalGroup = false;
                        insideRule = (indentLevel > nestedLevel);
                    } else {
                        // otherwise, declarations are also allowed
                        insideRule = (indentLevel >= nestedLevel);
                    }
                }
            } else if (ch === '}') {
                outdent();
                output.add_new_line();
                print_string(ch);
                insideRule = false;
                insidePropertyValue = false;
                if (nestedLevel) {
                    nestedLevel--;
                }

                if (!eatWhitespace(true)) {
                    output.add_new_line();
                }

                if (newlinesFromLastWSEat < 2 && newline_between_rules && indentLevel === 0) {
                    output.add_new_line(true);
                }
            } else if (ch === ":") {
                eatWhitespace();
                if ((insideRule || enteringConditionalGroup) &&
                    !(lookBack("&") || foundNestedPseudoClass()) &&
                    !lookBack("(")) {
                    // 'property: value' delimiter
                    // which could be in a conditional group query
                    print_string(':');
                    if (!insidePropertyValue) {
                        insidePropertyValue = true;
                        output.space_before_token = true;
                    }
                } else {
                    // sass/less parent reference don't use a space
                    // sass nested pseudo-class don't use a space

                    // preserve space before pseudoclasses/pseudoelements, as it means "in any child"
                    if (lookBack(" ")) {
                        output.space_before_token = true;
                    }
                    if (peek() === ":") {
                        // pseudo-element
                        next();
                        print_string("::");
                    } else {
                        // pseudo-class
                        print_string(':');
                    }
                }
            } else if (ch === '"' || ch === '\'') {
                preserveSingleSpace(isAfterSpace);
                print_string(eatString(ch));
            } else if (ch === ';') {
                insidePropertyValue = false;
                print_string(ch);
                if (!eatWhitespace(true)) {
                    output.add_new_line();
                }
            } else if (ch === '(') { // may be a url
                if (lookBack("url")) {
                    print_string(ch);
                    eatWhitespace();
                    if (next()) {
                        if (ch !== ')' && ch !== '"' && ch !== '\'') {
                            print_string(eatString(')'));
                        } else {
                            pos--;
                        }
                    }
                } else {
                    parenLevel++;
                    preserveSingleSpace(isAfterSpace);
                    print_string(ch);
                    eatWhitespace();
                }
            } else if (ch === ')') {
                print_string(ch);
                parenLevel--;
            } else if (ch === ',') {
                print_string(ch);
                if (!eatWhitespace(true) && selectorSeparatorNewline && !insidePropertyValue && parenLevel < 1) {
                    output.add_new_line();
                } else {
                    output.space_before_token = true;
                }
            } else if ((ch === '>' || ch === '+' || ch === '~') &&
                !insidePropertyValue && parenLevel < 1) {
                //handle combinator spacing
                if (space_around_combinator) {
                    output.space_before_token = true;
                    print_string(ch);
                    output.space_before_token = true;
                } else {
                    print_string(ch);
                    eatWhitespace();
                    // squash extra whitespace
                    if (ch && whiteRe.test(ch)) {
                        ch = '';
                    }
                }
            } else if (ch === ']') {
                print_string(ch);
            } else if (ch === '[') {
                preserveSingleSpace(isAfterSpace);
                print_string(ch);
            } else if (ch === '=') { // no whitespace before or after
                eatWhitespace();
                print_string('=');
                if (whiteRe.test(ch)) {
                    ch = '';
                }
            } else if (ch === '!') { // !important
                print_string(' ');
                print_string(ch);
            } else {
                preserveSingleSpace(isAfterSpace);
                print_string(ch);
            }
        }

        var sweetCode = output.get_code(end_with_newline, eol);

        return sweetCode;
    };

    // https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
    this.NESTED_AT_RULE = {
        "@page": true,
        "@font-face": true,
        "@keyframes": true,
        // also in CONDITIONAL_GROUP_RULE below
        "@media": true,
        "@supports": true,
        "@document": true
    };
    this.CONDITIONAL_GROUP_RULE = {
        "@media": true,
        "@supports": true,
        "@document": true
    };
}

module.exports.Beautifier = Beautifier;


/***/ }),
/* 1 */
/***/ (function(module, exports) {

/* jshint curly: false */
// This section of code is taken from acorn.
//
// Acorn was written by Marijn Haverbeke and released under an MIT
// license. The Unicode regexps (for identifiers and whitespace) were
// taken from [Esprima](http://esprima.org) by Ariya Hidayat.
//
// Git repositories for Acorn are available at
//
//     http://marijnhaverbeke.nl/git/acorn
//     https://github.com/marijnh/acorn.git

// ## Character categories

// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.

var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
var nonASCIIidentifierChars = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

// Whether a single character denotes a newline.

exports.newline = /[\n\r\u2028\u2029]/;

// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.

// in javascript, these two differ
// in python they are the same, different methods are called on them
exports.lineBreak = new RegExp('\r\n|' + exports.newline.source);
exports.allLineBreaks = new RegExp(exports.lineBreak.source, 'g');


// Test whether a given character code starts an identifier.

exports.isIdentifierStart = function(code) {
    // permit $ (36) and @ (64). @ is used in ES7 decorators.
    if (code < 65) return code === 36 || code === 64;
    // 65 through 91 are uppercase letters.
    if (code < 91) return true;
    // permit _ (95).
    if (code < 97) return code === 95;
    // 97 through 123 are lowercase letters.
    if (code < 123) return true;
    return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
};

// Test whether a given character is part of an identifier.

exports.isIdentifierChar = function(code) {
    if (code < 48) return code === 36;
    if (code < 58) return true;
    if (code < 65) return false;
    if (code < 91) return true;
    if (code < 97) return code === 95;
    if (code < 123) return true;
    return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
};


/***/ }),
/* 2 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

function mergeOpts(allOptions, targetType) {
    var finalOpts = {};
    var name;

    for (name in allOptions) {
        if (name !== targetType) {
            finalOpts[name] = allOptions[name];
        }
    }

    //merge in the per type settings for the targetType
    if (targetType in allOptions) {
        for (name in allOptions[targetType]) {
            finalOpts[name] = allOptions[targetType][name];
        }
    }
    return finalOpts;
}

module.exports.mergeOpts = mergeOpts;


/***/ }),
/* 3 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

function OutputLine(parent) {
    var _character_count = 0;
    // use indent_count as a marker for lines that have preserved indentation
    var _indent_count = -1;

    var _items = [];
    var _empty = true;

    this.set_indent = function(level) {
        _character_count = parent.baseIndentLength + level * parent.indent_length;
        _indent_count = level;
    };

    this.get_character_count = function() {
        return _character_count;
    };

    this.is_empty = function() {
        return _empty;
    };

    this.last = function() {
        if (!this._empty) {
            return _items[_items.length - 1];
        } else {
            return null;
        }
    };

    this.push = function(input) {
        _items.push(input);
        _character_count += input.length;
        _empty = false;
    };

    this.pop = function() {
        var item = null;
        if (!_empty) {
            item = _items.pop();
            _character_count -= item.length;
            _empty = _items.length === 0;
        }
        return item;
    };

    this.remove_indent = function() {
        if (_indent_count > 0) {
            _indent_count -= 1;
            _character_count -= parent.indent_length;
        }
    };

    this.trim = function() {
        while (this.last() === ' ') {
            _items.pop();
            _character_count -= 1;
        }
        _empty = _items.length === 0;
    };

    this.toString = function() {
        var result = '';
        if (!this._empty) {
            if (_indent_count >= 0) {
                result = parent.indent_cache[_indent_count];
            }
            result += _items.join('');
        }
        return result;
    };
}

function Output(indent_string, baseIndentString) {
    baseIndentString = baseIndentString || '';
    this.indent_cache = [baseIndentString];
    this.baseIndentLength = baseIndentString.length;
    this.indent_length = indent_string.length;
    this.raw = false;

    var lines = [];
    this.baseIndentString = baseIndentString;
    this.indent_string = indent_string;
    this.previous_line = null;
    this.current_line = null;
    this.space_before_token = false;

    this.add_outputline = function() {
        this.previous_line = this.current_line;
        this.current_line = new OutputLine(this);
        lines.push(this.current_line);
    };

    // initialize
    this.add_outputline();


    this.get_line_number = function() {
        return lines.length;
    };

    // Using object instead of string to allow for later expansion of info about each line
    this.add_new_line = function(force_newline) {
        if (this.get_line_number() === 1 && this.just_added_newline()) {
            return false; // no newline on start of file
        }

        if (force_newline || !this.just_added_newline()) {
            if (!this.raw) {
                this.add_outputline();
            }
            return true;
        }

        return false;
    };

    this.get_code = function(end_with_newline, eol) {
        var sweet_code = lines.join('\n').replace(/[\r\n\t ]+$/, '');

        if (end_with_newline) {
            sweet_code += '\n';
        }

        if (eol !== '\n') {
            sweet_code = sweet_code.replace(/[\n]/g, eol);
        }

        return sweet_code;
    };

    this.set_indent = function(level) {
        // Never indent your first output indent at the start of the file
        if (lines.length > 1) {
            while (level >= this.indent_cache.length) {
                this.indent_cache.push(this.indent_cache[this.indent_cache.length - 1] + this.indent_string);
            }

            this.current_line.set_indent(level);
            return true;
        }
        this.current_line.set_indent(0);
        return false;
    };

    this.add_raw_token = function(token) {
        for (var x = 0; x < token.newlines; x++) {
            this.add_outputline();
        }
        this.current_line.push(token.whitespace_before);
        this.current_line.push(token.text);
        this.space_before_token = false;
    };

    this.add_token = function(printable_token) {
        this.add_space_before_token();
        this.current_line.push(printable_token);
    };

    this.add_space_before_token = function() {
        if (this.space_before_token && !this.just_added_newline()) {
            this.current_line.push(' ');
        }
        this.space_before_token = false;
    };

    this.remove_indent = function(index) {
        var output_length = lines.length;
        while (index < output_length) {
            lines[index].remove_indent();
            index++;
        }
    };

    this.trim = function(eat_newlines) {
        eat_newlines = (eat_newlines === undefined) ? false : eat_newlines;

        this.current_line.trim(indent_string, baseIndentString);

        while (eat_newlines && lines.length > 1 &&
            this.current_line.is_empty()) {
            lines.pop();
            this.current_line = lines[lines.length - 1];
            this.current_line.trim();
        }

        this.previous_line = lines.length > 1 ? lines[lines.length - 2] : null;
    };

    this.just_added_newline = function() {
        return this.current_line.is_empty();
    };

    this.just_added_blankline = function() {
        if (this.just_added_newline()) {
            if (lines.length === 1) {
                return true; // start of the file and newline = blank
            }

            var line = lines[lines.length - 2];
            return line.is_empty();
        }
        return false;
    };
}

module.exports.Output = Output;


/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

var Beautifier = __webpack_require__(0).Beautifier;

function css_beautify(source_text, options) {
    var beautifier = new Beautifier(source_text, options);
    return beautifier.beautify();
}

module.exports = css_beautify;

/***/ })
/******/ ]);
var css_beautify = legacy_beautify_css;
/* Footer */
if (true) {
    // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
        return {
            css_beautify: css_beautify
        };
    }).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
} else {}

}());


/***/ }),
/* 194 */
/*!*****************************************************!*\
  !*** ./node_modules/js-beautify/js/lib/beautify.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*jshint curly:false, eqeqeq:true, laxbreak:true, noempty:false */
/* AUTO-GENERATED. DO NOT MODIFY. */
/* see js/src/javascript/index.js */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.

 JS Beautifier
---------------


  Written by Einar Lielmanis, <einar@jsbeautifier.org>
      http://jsbeautifier.org/

  Originally converted to javascript by Vital, <vital76@gmail.com>
  "End braces on own line" added by Chris J. Shull, <chrisjshull@gmail.com>
  Parsing improvements for brace-less statements by Liam Newman <bitwiseman@gmail.com>


  Usage:
    js_beautify(js_source_text);
    js_beautify(js_source_text, options);

  The options are:
    indent_size (default 4)          - indentation size,
    indent_char (default space)      - character to indent with,
    preserve_newlines (default true) - whether existing line breaks should be preserved,
    max_preserve_newlines (default unlimited) - maximum number of line breaks to be preserved in one chunk,

    jslint_happy (default false) - if true, then jslint-stricter mode is enforced.

            jslint_happy        !jslint_happy
            ---------------------------------
            function ()         function()

            switch () {         switch() {
            case 1:               case 1:
              break;                break;
            }                   }

    space_after_anon_function (default false) - should the space before an anonymous function's parens be added, "function()" vs "function ()",
          NOTE: This option is overriden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)

    brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none" | any of the former + ",preserve-inline"
            put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
            preserve-inline will try to preserve inline blocks of curly braces

    space_before_conditional (default true) - should the space before conditional statement be added, "if(true)" vs "if (true)",

    unescape_strings (default false) - should printable characters in strings encoded in \xNN notation be unescaped, "example" vs "\x65\x78\x61\x6d\x70\x6c\x65"

    wrap_line_length (default unlimited) - lines should wrap at next opportunity after this number of characters.
          NOTE: This is not a hard limit. Lines will continue until a point where a newline would
                be preserved if it were present.

    end_with_newline (default false)  - end output with a newline


    e.g

    js_beautify(js_source_text, {
      'indent_size': 1,
      'indent_char': '\t'
    });

*/

(function() {
var legacy_beautify_js =
/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// identity function for calling harmony imports with the correct context
/******/ 	__webpack_require__.i = function(value) { return value; };
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 6);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports) {

/* jshint curly: false */
// This section of code is taken from acorn.
//
// Acorn was written by Marijn Haverbeke and released under an MIT
// license. The Unicode regexps (for identifiers and whitespace) were
// taken from [Esprima](http://esprima.org) by Ariya Hidayat.
//
// Git repositories for Acorn are available at
//
//     http://marijnhaverbeke.nl/git/acorn
//     https://github.com/marijnh/acorn.git

// ## Character categories

// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.

var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
var nonASCIIidentifierChars = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

// Whether a single character denotes a newline.

exports.newline = /[\n\r\u2028\u2029]/;

// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.

// in javascript, these two differ
// in python they are the same, different methods are called on them
exports.lineBreak = new RegExp('\r\n|' + exports.newline.source);
exports.allLineBreaks = new RegExp(exports.lineBreak.source, 'g');


// Test whether a given character code starts an identifier.

exports.isIdentifierStart = function(code) {
    // permit $ (36) and @ (64). @ is used in ES7 decorators.
    if (code < 65) return code === 36 || code === 64;
    // 65 through 91 are uppercase letters.
    if (code < 91) return true;
    // permit _ (95).
    if (code < 97) return code === 95;
    // 97 through 123 are lowercase letters.
    if (code < 123) return true;
    return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
};

// Test whether a given character is part of an identifier.

exports.isIdentifierChar = function(code) {
    if (code < 48) return code === 36;
    if (code < 58) return true;
    if (code < 65) return false;
    if (code < 91) return true;
    if (code < 97) return code === 95;
    if (code < 123) return true;
    return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
};


/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

var mergeOpts = __webpack_require__(3).mergeOpts;
var acorn = __webpack_require__(0);
var Output = __webpack_require__(4).Output;
var Tokenizer = __webpack_require__(7).Tokenizer;

function remove_redundant_indentation(output, frame) {
    // This implementation is effective but has some issues:
    //     - can cause line wrap to happen too soon due to indent removal
    //           after wrap points are calculated
    // These issues are minor compared to ugly indentation.

    if (frame.multiline_frame ||
        frame.mode === MODE.ForInitializer ||
        frame.mode === MODE.Conditional) {
        return;
    }

    // remove one indent from each line inside this section
    var start_index = frame.start_line_index;

    output.remove_indent(start_index);
}

function in_array(what, arr) {
    for (var i = 0; i < arr.length; i += 1) {
        if (arr[i] === what) {
            return true;
        }
    }
    return false;
}

function trim(s) {
    return s.replace(/^\s+|\s+$/g, '');
}

function ltrim(s) {
    return s.replace(/^\s+/g, '');
}

// function rtrim(s) {
//     return s.replace(/\s+$/g, '');
// }


function generateMapFromStrings(list) {
    var result = {};
    for (var x = 0; x < list.length; x++) {
        // make the mapped names underscored instead of dash
        result[list[x].replace(/-/g, '_')] = list[x];
    }
    return result;
}

function sanitizeOperatorPosition(opPosition) {
    opPosition = opPosition || OPERATOR_POSITION.before_newline;

    if (!in_array(opPosition, validPositionValues)) {
        throw new Error("Invalid Option Value: The option 'operator_position' must be one of the following values\n" +
            validPositionValues +
            "\nYou passed in: '" + opPosition + "'");
    }

    return opPosition;
}

var validPositionValues = ['before-newline', 'after-newline', 'preserve-newline'];

// Generate map from array
var OPERATOR_POSITION = generateMapFromStrings(validPositionValues);

var OPERATOR_POSITION_BEFORE_OR_PRESERVE = [OPERATOR_POSITION.before_newline, OPERATOR_POSITION.preserve_newline];

var MODE = {
    BlockStatement: 'BlockStatement', // 'BLOCK'
    Statement: 'Statement', // 'STATEMENT'
    ObjectLiteral: 'ObjectLiteral', // 'OBJECT',
    ArrayLiteral: 'ArrayLiteral', //'[EXPRESSION]',
    ForInitializer: 'ForInitializer', //'(FOR-EXPRESSION)',
    Conditional: 'Conditional', //'(COND-EXPRESSION)',
    Expression: 'Expression' //'(EXPRESSION)'
};

function Beautifier(js_source_text, options) {
    "use strict";
    var output;
    var tokens = [],
        token_pos;
    var tokenizer;
    var current_token;
    var last_type, last_last_text, indent_string;
    var flags, previous_flags, flag_store;
    var prefix;

    var handlers, opt;
    var baseIndentString = '';

    handlers = {
        'TK_START_EXPR': handle_start_expr,
        'TK_END_EXPR': handle_end_expr,
        'TK_START_BLOCK': handle_start_block,
        'TK_END_BLOCK': handle_end_block,
        'TK_WORD': handle_word,
        'TK_RESERVED': handle_word,
        'TK_SEMICOLON': handle_semicolon,
        'TK_STRING': handle_string,
        'TK_EQUALS': handle_equals,
        'TK_OPERATOR': handle_operator,
        'TK_COMMA': handle_comma,
        'TK_BLOCK_COMMENT': handle_block_comment,
        'TK_COMMENT': handle_comment,
        'TK_DOT': handle_dot,
        'TK_UNKNOWN': handle_unknown,
        'TK_EOF': handle_eof
    };

    function create_flags(flags_base, mode) {
        var next_indent_level = 0;
        if (flags_base) {
            next_indent_level = flags_base.indentation_level;
            if (!output.just_added_newline() &&
                flags_base.line_indent_level > next_indent_level) {
                next_indent_level = flags_base.line_indent_level;
            }
        }

        var next_flags = {
            mode: mode,
            parent: flags_base,
            last_text: flags_base ? flags_base.last_text : '', // last token text
            last_word: flags_base ? flags_base.last_word : '', // last 'TK_WORD' passed
            declaration_statement: false,
            declaration_assignment: false,
            multiline_frame: false,
            inline_frame: false,
            if_block: false,
            else_block: false,
            do_block: false,
            do_while: false,
            import_block: false,
            in_case_statement: false, // switch(..){ INSIDE HERE }
            in_case: false, // we're on the exact line with "case 0:"
            case_body: false, // the indented case-action block
            indentation_level: next_indent_level,
            line_indent_level: flags_base ? flags_base.line_indent_level : next_indent_level,
            start_line_index: output.get_line_number(),
            ternary_depth: 0
        };
        return next_flags;
    }

    // Some interpreters have unexpected results with foo = baz || bar;
    options = options ? options : {};

    // Allow the setting of language/file-type specific options
    // with inheritance of overall settings
    options = mergeOpts(options, 'js');

    opt = {};

    // compatibility, re
    if (options.brace_style === "expand-strict") { //graceful handling of deprecated option
        options.brace_style = "expand";
    } else if (options.brace_style === "collapse-preserve-inline") { //graceful handling of deprecated option
        options.brace_style = "collapse,preserve-inline";
    } else if (options.braces_on_own_line !== undefined) { //graceful handling of deprecated option
        options.brace_style = options.braces_on_own_line ? "expand" : "collapse";
    } else if (!options.brace_style) { //Nothing exists to set it
        options.brace_style = "collapse";
    }

    //preserve-inline in delimited string will trigger brace_preserve_inline, everything
    //else is considered a brace_style and the last one only will have an effect
    var brace_style_split = options.brace_style.split(/[^a-zA-Z0-9_\-]+/);
    opt.brace_preserve_inline = false; //Defaults in case one or other was not specified in meta-option
    opt.brace_style = "collapse";
    for (var bs = 0; bs < brace_style_split.length; bs++) {
        if (brace_style_split[bs] === "preserve-inline") {
            opt.brace_preserve_inline = true;
        } else {
            opt.brace_style = brace_style_split[bs];
        }
    }

    opt.indent_size = options.indent_size ? parseInt(options.indent_size, 10) : 4;
    opt.indent_char = options.indent_char ? options.indent_char : ' ';
    opt.eol = options.eol ? options.eol : 'auto';
    opt.preserve_newlines = (options.preserve_newlines === undefined) ? true : options.preserve_newlines;
    opt.unindent_chained_methods = (options.unindent_chained_methods === undefined) ? false : options.unindent_chained_methods;
    opt.break_chained_methods = (options.break_chained_methods === undefined) ? false : options.break_chained_methods;
    opt.max_preserve_newlines = (options.max_preserve_newlines === undefined) ? 0 : parseInt(options.max_preserve_newlines, 10);
    opt.space_in_paren = (options.space_in_paren === undefined) ? false : options.space_in_paren;
    opt.space_in_empty_paren = (options.space_in_empty_paren === undefined) ? false : options.space_in_empty_paren;
    opt.jslint_happy = (options.jslint_happy === undefined) ? false : options.jslint_happy;
    opt.space_after_anon_function = (options.space_after_anon_function === undefined) ? false : options.space_after_anon_function;
    opt.keep_array_indentation = (options.keep_array_indentation === undefined) ? false : options.keep_array_indentation;
    opt.space_before_conditional = (options.space_before_conditional === undefined) ? true : options.space_before_conditional;
    opt.unescape_strings = (options.unescape_strings === undefined) ? false : options.unescape_strings;
    opt.wrap_line_length = (options.wrap_line_length === undefined) ? 0 : parseInt(options.wrap_line_length, 10);
    opt.e4x = (options.e4x === undefined) ? false : options.e4x;
    opt.end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
    opt.comma_first = (options.comma_first === undefined) ? false : options.comma_first;
    opt.operator_position = sanitizeOperatorPosition(options.operator_position);

    // For testing of beautify ignore:start directive
    opt.test_output_raw = (options.test_output_raw === undefined) ? false : options.test_output_raw;

    // force opt.space_after_anon_function to true if opt.jslint_happy
    if (opt.jslint_happy) {
        opt.space_after_anon_function = true;
    }

    if (options.indent_with_tabs) {
        opt.indent_char = '\t';
        opt.indent_size = 1;
    }

    if (opt.eol === 'auto') {
        opt.eol = '\n';
        if (js_source_text && acorn.lineBreak.test(js_source_text || '')) {
            opt.eol = js_source_text.match(acorn.lineBreak)[0];
        }
    }

    opt.eol = opt.eol.replace(/\\r/, '\r').replace(/\\n/, '\n');

    //----------------------------------
    indent_string = '';
    while (opt.indent_size > 0) {
        indent_string += opt.indent_char;
        opt.indent_size -= 1;
    }

    var preindent_index = 0;
    if (js_source_text && js_source_text.length) {
        while ((js_source_text.charAt(preindent_index) === ' ' ||
                js_source_text.charAt(preindent_index) === '\t')) {
            preindent_index += 1;
        }
        baseIndentString = js_source_text.substring(0, preindent_index);
        js_source_text = js_source_text.substring(preindent_index);
    }

    last_type = 'TK_START_BLOCK'; // last token type
    last_last_text = ''; // pre-last token text
    output = new Output(indent_string, baseIndentString);

    // If testing the ignore directive, start with output disable set to true
    output.raw = opt.test_output_raw;


    // Stack of parsing/formatting states, including MODE.
    // We tokenize, parse, and output in an almost purely a forward-only stream of token input
    // and formatted output.  This makes the beautifier less accurate than full parsers
    // but also far more tolerant of syntax errors.
    //
    // For example, the default mode is MODE.BlockStatement. If we see a '{' we push a new frame of type
    // MODE.BlockStatement on the the stack, even though it could be object literal.  If we later
    // encounter a ":", we'll switch to to MODE.ObjectLiteral.  If we then see a ";",
    // most full parsers would die, but the beautifier gracefully falls back to
    // MODE.BlockStatement and continues on.
    flag_store = [];
    set_mode(MODE.BlockStatement);

    this.beautify = function() {

        /*jshint onevar:true */
        var sweet_code;
        tokenizer = new Tokenizer(js_source_text, opt, indent_string);
        tokens = tokenizer.tokenize();
        token_pos = 0;

        current_token = get_token();
        while (current_token) {
            handlers[current_token.type]();

            last_last_text = flags.last_text;
            last_type = current_token.type;
            flags.last_text = current_token.text;

            token_pos += 1;
            current_token = get_token();
        }

        sweet_code = output.get_code(opt.end_with_newline, opt.eol);

        return sweet_code;
    };

    function handle_whitespace_and_comments(local_token, preserve_statement_flags) {
        var newlines = local_token.newlines;
        var keep_whitespace = opt.keep_array_indentation && is_array(flags.mode);
        var temp_token = current_token;

        for (var h = 0; h < local_token.comments_before.length; h++) {
            // The cleanest handling of inline comments is to treat them as though they aren't there.
            // Just continue formatting and the behavior should be logical.
            // Also ignore unknown tokens.  Again, this should result in better behavior.
            current_token = local_token.comments_before[h];
            handle_whitespace_and_comments(current_token, preserve_statement_flags);
            handlers[current_token.type](preserve_statement_flags);
        }
        current_token = temp_token;

        if (keep_whitespace) {
            for (var i = 0; i < newlines; i += 1) {
                print_newline(i > 0, preserve_statement_flags);
            }
        } else {
            if (opt.max_preserve_newlines && newlines > opt.max_preserve_newlines) {
                newlines = opt.max_preserve_newlines;
            }

            if (opt.preserve_newlines) {
                if (local_token.newlines > 1) {
                    print_newline(false, preserve_statement_flags);
                    for (var j = 1; j < newlines; j += 1) {
                        print_newline(true, preserve_statement_flags);
                    }
                }
            }
        }

    }

    // we could use just string.split, but
    // IE doesn't like returning empty strings
    function split_linebreaks(s) {
        //return s.split(/\x0d\x0a|\x0a/);

        s = s.replace(acorn.allLineBreaks, '\n');
        var out = [],
            idx = s.indexOf("\n");
        while (idx !== -1) {
            out.push(s.substring(0, idx));
            s = s.substring(idx + 1);
            idx = s.indexOf("\n");
        }
        if (s.length) {
            out.push(s);
        }
        return out;
    }

    var newline_restricted_tokens = ['break', 'continue', 'return', 'throw', 'yield'];

    function allow_wrap_or_preserved_newline(force_linewrap) {
        force_linewrap = (force_linewrap === undefined) ? false : force_linewrap;

        // Never wrap the first token on a line
        if (output.just_added_newline()) {
            return;
        }

        var shouldPreserveOrForce = (opt.preserve_newlines && current_token.wanted_newline) || force_linewrap;
        var operatorLogicApplies = in_array(flags.last_text, tokenizer.positionable_operators) || in_array(current_token.text, tokenizer.positionable_operators);

        if (operatorLogicApplies) {
            var shouldPrintOperatorNewline = (
                    in_array(flags.last_text, tokenizer.positionable_operators) &&
                    in_array(opt.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)
                ) ||
                in_array(current_token.text, tokenizer.positionable_operators);
            shouldPreserveOrForce = shouldPreserveOrForce && shouldPrintOperatorNewline;
        }

        if (shouldPreserveOrForce) {
            print_newline(false, true);
        } else if (opt.wrap_line_length) {
            if (last_type === 'TK_RESERVED' && in_array(flags.last_text, newline_restricted_tokens)) {
                // These tokens should never have a newline inserted
                // between them and the following expression.
                return;
            }
            var proposed_line_length = output.current_line.get_character_count() + current_token.text.length +
                (output.space_before_token ? 1 : 0);
            if (proposed_line_length >= opt.wrap_line_length) {
                print_newline(false, true);
            }
        }
    }

    function print_newline(force_newline, preserve_statement_flags) {
        if (!preserve_statement_flags) {
            if (flags.last_text !== ';' && flags.last_text !== ',' && flags.last_text !== '=' && last_type !== 'TK_OPERATOR') {
                var next_token = get_token(1);
                while (flags.mode === MODE.Statement &&
                    !(flags.if_block && next_token && next_token.type === 'TK_RESERVED' && next_token.text === 'else') &&
                    !flags.do_block) {
                    restore_mode();
                }
            }
        }

        if (output.add_new_line(force_newline)) {
            flags.multiline_frame = true;
        }
    }

    function print_token_line_indentation() {
        if (output.just_added_newline()) {
            if (opt.keep_array_indentation && is_array(flags.mode) && current_token.wanted_newline) {
                output.current_line.push(current_token.whitespace_before);
                output.space_before_token = false;
            } else if (output.set_indent(flags.indentation_level)) {
                flags.line_indent_level = flags.indentation_level;
            }
        }
    }

    function print_token(printable_token) {
        if (output.raw) {
            output.add_raw_token(current_token);
            return;
        }

        if (opt.comma_first && last_type === 'TK_COMMA' &&
            output.just_added_newline()) {
            if (output.previous_line.last() === ',') {
                var popped = output.previous_line.pop();
                // if the comma was already at the start of the line,
                // pull back onto that line and reprint the indentation
                if (output.previous_line.is_empty()) {
                    output.previous_line.push(popped);
                    output.trim(true);
                    output.current_line.pop();
                    output.trim();
                }

                // add the comma in front of the next token
                print_token_line_indentation();
                output.add_token(',');
                output.space_before_token = true;
            }
        }

        printable_token = printable_token || current_token.text;
        print_token_line_indentation();
        output.add_token(printable_token);
    }

    function indent() {
        flags.indentation_level += 1;
    }

    function deindent() {
        if (flags.indentation_level > 0 &&
            ((!flags.parent) || flags.indentation_level > flags.parent.indentation_level)) {
            flags.indentation_level -= 1;

        }
    }

    function set_mode(mode) {
        if (flags) {
            flag_store.push(flags);
            previous_flags = flags;
        } else {
            previous_flags = create_flags(null, mode);
        }

        flags = create_flags(previous_flags, mode);
    }

    function is_array(mode) {
        return mode === MODE.ArrayLiteral;
    }

    function is_expression(mode) {
        return in_array(mode, [MODE.Expression, MODE.ForInitializer, MODE.Conditional]);
    }

    function restore_mode() {
        if (flag_store.length > 0) {
            previous_flags = flags;
            flags = flag_store.pop();
            if (previous_flags.mode === MODE.Statement && !opt.unindent_chained_methods) {
                remove_redundant_indentation(output, previous_flags);
            }
        }
    }

    function start_of_object_property() {
        return flags.parent.mode === MODE.ObjectLiteral && flags.mode === MODE.Statement && (
            (flags.last_text === ':' && flags.ternary_depth === 0) || (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set'])));
    }

    function start_of_statement() {
        if (
            (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') ||
            (last_type === 'TK_RESERVED' && flags.last_text === 'do') ||
            (last_type === 'TK_RESERVED' && in_array(flags.last_text, newline_restricted_tokens) && !current_token.wanted_newline) ||
            (last_type === 'TK_RESERVED' && flags.last_text === 'else' &&
                !(current_token.type === 'TK_RESERVED' && current_token.text === 'if' && !current_token.comments_before.length)) ||
            (last_type === 'TK_END_EXPR' && (previous_flags.mode === MODE.ForInitializer || previous_flags.mode === MODE.Conditional)) ||
            (last_type === 'TK_WORD' && flags.mode === MODE.BlockStatement &&
                !flags.in_case &&
                !(current_token.text === '--' || current_token.text === '++') &&
                last_last_text !== 'function' &&
                current_token.type !== 'TK_WORD' && current_token.type !== 'TK_RESERVED') ||
            (flags.mode === MODE.ObjectLiteral && (
                (flags.last_text === ':' && flags.ternary_depth === 0) || (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set']))))
        ) {

            set_mode(MODE.Statement);
            if (!opt.unindent_chained_methods) {
                indent();
            }

            handle_whitespace_and_comments(current_token, true);

            // Issue #276:
            // If starting a new statement with [if, for, while, do], push to a new line.
            // if (a) if (b) if(c) d(); else e(); else f();
            if (!start_of_object_property()) {
                allow_wrap_or_preserved_newline(
                    current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['do', 'for', 'if', 'while']));
            }

            return true;
        }
        return false;
    }

    function all_lines_start_with(lines, c) {
        for (var i = 0; i < lines.length; i++) {
            var line = trim(lines[i]);
            if (line.charAt(0) !== c) {
                return false;
            }
        }
        return true;
    }

    function each_line_matches_indent(lines, indent) {
        var i = 0,
            len = lines.length,
            line;
        for (; i < len; i++) {
            line = lines[i];
            // allow empty lines to pass through
            if (line && line.indexOf(indent) !== 0) {
                return false;
            }
        }
        return true;
    }

    function is_special_word(word) {
        return in_array(word, ['case', 'return', 'do', 'if', 'throw', 'else']);
    }

    function get_token(offset) {
        var index = token_pos + (offset || 0);
        return (index < 0 || index >= tokens.length) ? null : tokens[index];
    }

    function handle_start_expr() {
        // The conditional starts the statement if appropriate.
        if (!start_of_statement()) {
            handle_whitespace_and_comments(current_token);
        }

        var next_mode = MODE.Expression;
        if (current_token.text === '[') {

            if (last_type === 'TK_WORD' || flags.last_text === ')') {
                // this is array index specifier, break immediately
                // a[x], fn()[x]
                if (last_type === 'TK_RESERVED' && in_array(flags.last_text, tokenizer.line_starters)) {
                    output.space_before_token = true;
                }
                set_mode(next_mode);
                print_token();
                indent();
                if (opt.space_in_paren) {
                    output.space_before_token = true;
                }
                return;
            }

            next_mode = MODE.ArrayLiteral;
            if (is_array(flags.mode)) {
                if (flags.last_text === '[' ||
                    (flags.last_text === ',' && (last_last_text === ']' || last_last_text === '}'))) {
                    // ], [ goes to new line
                    // }, [ goes to new line
                    if (!opt.keep_array_indentation) {
                        print_newline();
                    }
                }
            }

        } else {
            if (last_type === 'TK_RESERVED' && flags.last_text === 'for') {
                next_mode = MODE.ForInitializer;
            } else if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['if', 'while'])) {
                next_mode = MODE.Conditional;
            } else {
                // next_mode = MODE.Expression;
            }
        }

        if (flags.last_text === ';' || last_type === 'TK_START_BLOCK') {
            print_newline();
        } else if (last_type === 'TK_END_EXPR' || last_type === 'TK_START_EXPR' || last_type === 'TK_END_BLOCK' || flags.last_text === '.') {
            // TODO: Consider whether forcing this is required.  Review failing tests when removed.
            allow_wrap_or_preserved_newline(current_token.wanted_newline);
            // do nothing on (( and )( and ][ and ]( and .(
        } else if (!(last_type === 'TK_RESERVED' && current_token.text === '(') && last_type !== 'TK_WORD' && last_type !== 'TK_OPERATOR') {
            output.space_before_token = true;
        } else if ((last_type === 'TK_RESERVED' && (flags.last_word === 'function' || flags.last_word === 'typeof')) ||
            (flags.last_text === '*' &&
                (in_array(last_last_text, ['function', 'yield']) ||
                    (flags.mode === MODE.ObjectLiteral && in_array(last_last_text, ['{', ',']))))) {
            // function() vs function ()
            // yield*() vs yield* ()
            // function*() vs function* ()
            if (opt.space_after_anon_function) {
                output.space_before_token = true;
            }
        } else if (last_type === 'TK_RESERVED' && (in_array(flags.last_text, tokenizer.line_starters) || flags.last_text === 'catch')) {
            if (opt.space_before_conditional) {
                output.space_before_token = true;
            }
        }

        // Should be a space between await and an IIFE, or async and an arrow function
        if (current_token.text === '(' && last_type === 'TK_RESERVED' && in_array(flags.last_word, ['await', 'async'])) {
            output.space_before_token = true;
        }

        // Support of this kind of newline preservation.
        // a = (b &&
        //     (c || d));
        if (current_token.text === '(') {
            if (last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline();
                }
            }
        }

        // Support preserving wrapped arrow function expressions
        // a.b('c',
        //     () => d.e
        // )
        if (current_token.text === '(' && last_type !== 'TK_WORD' && last_type !== 'TK_RESERVED') {
            allow_wrap_or_preserved_newline();
        }

        set_mode(next_mode);
        print_token();
        if (opt.space_in_paren) {
            output.space_before_token = true;
        }

        // In all cases, if we newline while inside an expression it should be indented.
        indent();
    }

    function handle_end_expr() {
        // statements inside expressions are not valid syntax, but...
        // statements must all be closed when their container closes
        while (flags.mode === MODE.Statement) {
            restore_mode();
        }

        handle_whitespace_and_comments(current_token);

        if (flags.multiline_frame) {
            allow_wrap_or_preserved_newline(current_token.text === ']' && is_array(flags.mode) && !opt.keep_array_indentation);
        }

        if (opt.space_in_paren) {
            if (last_type === 'TK_START_EXPR' && !opt.space_in_empty_paren) {
                // () [] no inner space in empty parens like these, ever, ref #320
                output.trim();
                output.space_before_token = false;
            } else {
                output.space_before_token = true;
            }
        }
        if (current_token.text === ']' && opt.keep_array_indentation) {
            print_token();
            restore_mode();
        } else {
            restore_mode();
            print_token();
        }
        remove_redundant_indentation(output, previous_flags);

        // do {} while () // no statement required after
        if (flags.do_while && previous_flags.mode === MODE.Conditional) {
            previous_flags.mode = MODE.Expression;
            flags.do_block = false;
            flags.do_while = false;

        }
    }

    function handle_start_block() {
        handle_whitespace_and_comments(current_token);

        // Check if this is should be treated as a ObjectLiteral
        var next_token = get_token(1);
        var second_token = get_token(2);
        if (second_token && (
                (in_array(second_token.text, [':', ',']) && in_array(next_token.type, ['TK_STRING', 'TK_WORD', 'TK_RESERVED'])) ||
                (in_array(next_token.text, ['get', 'set', '...']) && in_array(second_token.type, ['TK_WORD', 'TK_RESERVED']))
            )) {
            // We don't support TypeScript,but we didn't break it for a very long time.
            // We'll try to keep not breaking it.
            if (!in_array(last_last_text, ['class', 'interface'])) {
                set_mode(MODE.ObjectLiteral);
            } else {
                set_mode(MODE.BlockStatement);
            }
        } else if (last_type === 'TK_OPERATOR' && flags.last_text === '=>') {
            // arrow function: (param1, paramN) => { statements }
            set_mode(MODE.BlockStatement);
        } else if (in_array(last_type, ['TK_EQUALS', 'TK_START_EXPR', 'TK_COMMA', 'TK_OPERATOR']) ||
            (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['return', 'throw', 'import', 'default']))
        ) {
            // Detecting shorthand function syntax is difficult by scanning forward,
            //     so check the surrounding context.
            // If the block is being returned, imported, export default, passed as arg,
            //     assigned with = or assigned in a nested object, treat as an ObjectLiteral.
            set_mode(MODE.ObjectLiteral);
        } else {
            set_mode(MODE.BlockStatement);
        }

        var empty_braces = !next_token.comments_before.length && next_token.text === '}';
        var empty_anonymous_function = empty_braces && flags.last_word === 'function' &&
            last_type === 'TK_END_EXPR';

        if (opt.brace_preserve_inline) // check for inline, set inline_frame if so
        {
            // search forward for a newline wanted inside this block
            var index = 0;
            var check_token = null;
            flags.inline_frame = true;
            do {
                index += 1;
                check_token = get_token(index);
                if (check_token.wanted_newline) {
                    flags.inline_frame = false;
                    break;
                }
            } while (check_token.type !== 'TK_EOF' &&
                !(check_token.type === 'TK_END_BLOCK' && check_token.opened === current_token));
        }

        if ((opt.brace_style === "expand" ||
                (opt.brace_style === "none" && current_token.wanted_newline)) &&
            !flags.inline_frame) {
            if (last_type !== 'TK_OPERATOR' &&
                (empty_anonymous_function ||
                    last_type === 'TK_EQUALS' ||
                    (last_type === 'TK_RESERVED' && is_special_word(flags.last_text) && flags.last_text !== 'else'))) {
                output.space_before_token = true;
            } else {
                print_newline(false, true);
            }
        } else { // collapse || inline_frame
            if (is_array(previous_flags.mode) && (last_type === 'TK_START_EXPR' || last_type === 'TK_COMMA')) {
                if (last_type === 'TK_COMMA' || opt.space_in_paren) {
                    output.space_before_token = true;
                }

                if (last_type === 'TK_COMMA' || (last_type === 'TK_START_EXPR' && flags.inline_frame)) {
                    allow_wrap_or_preserved_newline();
                    previous_flags.multiline_frame = previous_flags.multiline_frame || flags.multiline_frame;
                    flags.multiline_frame = false;
                }
            }
            if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
                if (last_type === 'TK_START_BLOCK' && !flags.inline_frame) {
                    print_newline();
                } else {
                    output.space_before_token = true;
                }
            }
        }
        print_token();
        indent();
    }

    function handle_end_block() {
        // statements must all be closed when their container closes
        handle_whitespace_and_comments(current_token);

        while (flags.mode === MODE.Statement) {
            restore_mode();
        }

        var empty_braces = last_type === 'TK_START_BLOCK';

        if (flags.inline_frame && !empty_braces) { // try inline_frame (only set if opt.braces-preserve-inline) first
            output.space_before_token = true;
        } else if (opt.brace_style === "expand") {
            if (!empty_braces) {
                print_newline();
            }
        } else {
            // skip {}
            if (!empty_braces) {
                if (is_array(flags.mode) && opt.keep_array_indentation) {
                    // we REALLY need a newline here, but newliner would skip that
                    opt.keep_array_indentation = false;
                    print_newline();
                    opt.keep_array_indentation = true;

                } else {
                    print_newline();
                }
            }
        }
        restore_mode();
        print_token();
    }

    function handle_word() {
        if (current_token.type === 'TK_RESERVED') {
            if (in_array(current_token.text, ['set', 'get']) && flags.mode !== MODE.ObjectLiteral) {
                current_token.type = 'TK_WORD';
            } else if (in_array(current_token.text, ['as', 'from']) && !flags.import_block) {
                current_token.type = 'TK_WORD';
            } else if (flags.mode === MODE.ObjectLiteral) {
                var next_token = get_token(1);
                if (next_token.text === ':') {
                    current_token.type = 'TK_WORD';
                }
            }
        }

        if (start_of_statement()) {
            // The conditional starts the statement if appropriate.
            if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') {
                flags.declaration_statement = true;
            }
        } else if (current_token.wanted_newline && !is_expression(flags.mode) &&
            (last_type !== 'TK_OPERATOR' || (flags.last_text === '--' || flags.last_text === '++')) &&
            last_type !== 'TK_EQUALS' &&
            (opt.preserve_newlines || !(last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const', 'set', 'get'])))) {
            handle_whitespace_and_comments(current_token);
            print_newline();
        } else {
            handle_whitespace_and_comments(current_token);
        }

        if (flags.do_block && !flags.do_while) {
            if (current_token.type === 'TK_RESERVED' && current_token.text === 'while') {
                // do {} ## while ()
                output.space_before_token = true;
                print_token();
                output.space_before_token = true;
                flags.do_while = true;
                return;
            } else {
                // do {} should always have while as the next word.
                // if we don't see the expected while, recover
                print_newline();
                flags.do_block = false;
            }
        }

        // if may be followed by else, or not
        // Bare/inline ifs are tricky
        // Need to unwind the modes correctly: if (a) if (b) c(); else d(); else e();
        if (flags.if_block) {
            if (!flags.else_block && (current_token.type === 'TK_RESERVED' && current_token.text === 'else')) {
                flags.else_block = true;
            } else {
                while (flags.mode === MODE.Statement) {
                    restore_mode();
                }
                flags.if_block = false;
                flags.else_block = false;
            }
        }

        if (current_token.type === 'TK_RESERVED' && (current_token.text === 'case' || (current_token.text === 'default' && flags.in_case_statement))) {
            print_newline();
            if (flags.case_body || opt.jslint_happy) {
                // switch cases following one another
                deindent();
                flags.case_body = false;
            }
            print_token();
            flags.in_case = true;
            flags.in_case_statement = true;
            return;
        }

        if (last_type === 'TK_COMMA' || last_type === 'TK_START_EXPR' || last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
            if (!start_of_object_property()) {
                allow_wrap_or_preserved_newline();
            }
        }

        if (current_token.type === 'TK_RESERVED' && current_token.text === 'function') {
            if (in_array(flags.last_text, ['}', ';']) ||
                (output.just_added_newline() && !(in_array(flags.last_text, ['(', '[', '{', ':', '=', ',']) || last_type === 'TK_OPERATOR'))) {
                // make sure there is a nice clean space of at least one blank line
                // before a new function definition
                if (!output.just_added_blankline() && !current_token.comments_before.length) {
                    print_newline();
                    print_newline(true);
                }
            }
            if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD') {
                if (last_type === 'TK_RESERVED' && (
                        in_array(flags.last_text, ['get', 'set', 'new', 'export', 'async']) ||
                        in_array(flags.last_text, newline_restricted_tokens))) {
                    output.space_before_token = true;
                } else if (last_type === 'TK_RESERVED' && flags.last_text === 'default' && last_last_text === 'export') {
                    output.space_before_token = true;
                } else {
                    print_newline();
                }
            } else if (last_type === 'TK_OPERATOR' || flags.last_text === '=') {
                // foo = function
                output.space_before_token = true;
            } else if (!flags.multiline_frame && (is_expression(flags.mode) || is_array(flags.mode))) {
                // (function
            } else {
                print_newline();
            }

            print_token();
            flags.last_word = current_token.text;
            return;
        }

        prefix = 'NONE';

        if (last_type === 'TK_END_BLOCK') {

            if (previous_flags.inline_frame) {
                prefix = 'SPACE';
            } else if (!(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally', 'from']))) {
                prefix = 'NEWLINE';
            } else {
                if (opt.brace_style === "expand" ||
                    opt.brace_style === "end-expand" ||
                    (opt.brace_style === "none" && current_token.wanted_newline)) {
                    prefix = 'NEWLINE';
                } else {
                    prefix = 'SPACE';
                    output.space_before_token = true;
                }
            }
        } else if (last_type === 'TK_SEMICOLON' && flags.mode === MODE.BlockStatement) {
            // TODO: Should this be for STATEMENT as well?
            prefix = 'NEWLINE';
        } else if (last_type === 'TK_SEMICOLON' && is_expression(flags.mode)) {
            prefix = 'SPACE';
        } else if (last_type === 'TK_STRING') {
            prefix = 'NEWLINE';
        } else if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD' ||
            (flags.last_text === '*' &&
                (in_array(last_last_text, ['function', 'yield']) ||
                    (flags.mode === MODE.ObjectLiteral && in_array(last_last_text, ['{', ',']))))) {
            prefix = 'SPACE';
        } else if (last_type === 'TK_START_BLOCK') {
            if (flags.inline_frame) {
                prefix = 'SPACE';
            } else {
                prefix = 'NEWLINE';
            }
        } else if (last_type === 'TK_END_EXPR') {
            output.space_before_token = true;
            prefix = 'NEWLINE';
        }

        if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, tokenizer.line_starters) && flags.last_text !== ')') {
            if (flags.inline_frame || flags.last_text === 'else' || flags.last_text === 'export') {
                prefix = 'SPACE';
            } else {
                prefix = 'NEWLINE';
            }

        }

        if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally'])) {
            if ((!(last_type === 'TK_END_BLOCK' && previous_flags.mode === MODE.BlockStatement) ||
                    opt.brace_style === "expand" ||
                    opt.brace_style === "end-expand" ||
                    (opt.brace_style === "none" && current_token.wanted_newline)) &&
                !flags.inline_frame) {
                print_newline();
            } else {
                output.trim(true);
                var line = output.current_line;
                // If we trimmed and there's something other than a close block before us
                // put a newline back in.  Handles '} // comment' scenario.
                if (line.last() !== '}') {
                    print_newline();
                }
                output.space_before_token = true;
            }
        } else if (prefix === 'NEWLINE') {
            if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                // no newline between 'return nnn'
                output.space_before_token = true;
            } else if (last_type !== 'TK_END_EXPR') {
                if ((last_type !== 'TK_START_EXPR' || !(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['var', 'let', 'const']))) && flags.last_text !== ':') {
                    // no need to force newline on 'var': for (var x = 0...)
                    if (current_token.type === 'TK_RESERVED' && current_token.text === 'if' && flags.last_text === 'else') {
                        // no newline for } else if {
                        output.space_before_token = true;
                    } else {
                        print_newline();
                    }
                }
            } else if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, tokenizer.line_starters) && flags.last_text !== ')') {
                print_newline();
            }
        } else if (flags.multiline_frame && is_array(flags.mode) && flags.last_text === ',' && last_last_text === '}') {
            print_newline(); // }, in lists get a newline treatment
        } else if (prefix === 'SPACE') {
            output.space_before_token = true;
        }
        print_token();
        flags.last_word = current_token.text;

        if (current_token.type === 'TK_RESERVED') {
            if (current_token.text === 'do') {
                flags.do_block = true;
            } else if (current_token.text === 'if') {
                flags.if_block = true;
            } else if (current_token.text === 'import') {
                flags.import_block = true;
            } else if (flags.import_block && current_token.type === 'TK_RESERVED' && current_token.text === 'from') {
                flags.import_block = false;
            }
        }
    }

    function handle_semicolon() {
        if (start_of_statement()) {
            // The conditional starts the statement if appropriate.
            // Semicolon can be the start (and end) of a statement
            output.space_before_token = false;
        } else {
            handle_whitespace_and_comments(current_token);
        }

        var next_token = get_token(1);
        while (flags.mode === MODE.Statement &&
            !(flags.if_block && next_token && next_token.type === 'TK_RESERVED' && next_token.text === 'else') &&
            !flags.do_block) {
            restore_mode();
        }

        // hacky but effective for the moment
        if (flags.import_block) {
            flags.import_block = false;
        }
        print_token();
    }

    function handle_string() {
        if (start_of_statement()) {
            // The conditional starts the statement if appropriate.
            // One difference - strings want at least a space before
            output.space_before_token = true;
        } else {
            handle_whitespace_and_comments(current_token);
            if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD' || flags.inline_frame) {
                output.space_before_token = true;
            } else if (last_type === 'TK_COMMA' || last_type === 'TK_START_EXPR' || last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline();
                }
            } else {
                print_newline();
            }
        }
        print_token();
    }

    function handle_equals() {
        if (start_of_statement()) {
            // The conditional starts the statement if appropriate.
        } else {
            handle_whitespace_and_comments(current_token);
        }

        if (flags.declaration_statement) {
            // just got an '=' in a var-line, different formatting/line-breaking, etc will now be done
            flags.declaration_assignment = true;
        }
        output.space_before_token = true;
        print_token();
        output.space_before_token = true;
    }

    function handle_comma() {
        handle_whitespace_and_comments(current_token, true);

        print_token();
        output.space_before_token = true;
        if (flags.declaration_statement) {
            if (is_expression(flags.parent.mode)) {
                // do not break on comma, for(var a = 1, b = 2)
                flags.declaration_assignment = false;
            }

            if (flags.declaration_assignment) {
                flags.declaration_assignment = false;
                print_newline(false, true);
            } else if (opt.comma_first) {
                // for comma-first, we want to allow a newline before the comma
                // to turn into a newline after the comma, which we will fixup later
                allow_wrap_or_preserved_newline();
            }
        } else if (flags.mode === MODE.ObjectLiteral ||
            (flags.mode === MODE.Statement && flags.parent.mode === MODE.ObjectLiteral)) {
            if (flags.mode === MODE.Statement) {
                restore_mode();
            }

            if (!flags.inline_frame) {
                print_newline();
            }
        } else if (opt.comma_first) {
            // EXPR or DO_BLOCK
            // for comma-first, we want to allow a newline before the comma
            // to turn into a newline after the comma, which we will fixup later
            allow_wrap_or_preserved_newline();
        }
    }

    function handle_operator() {
        var isGeneratorAsterisk = current_token.text === '*' &&
            ((last_type === 'TK_RESERVED' && in_array(flags.last_text, ['function', 'yield'])) ||
                (in_array(last_type, ['TK_START_BLOCK', 'TK_COMMA', 'TK_END_BLOCK', 'TK_SEMICOLON']))
            );
        var isUnary = in_array(current_token.text, ['-', '+']) && (
            in_array(last_type, ['TK_START_BLOCK', 'TK_START_EXPR', 'TK_EQUALS', 'TK_OPERATOR']) ||
            in_array(flags.last_text, tokenizer.line_starters) ||
            flags.last_text === ','
        );

        if (start_of_statement()) {
            // The conditional starts the statement if appropriate.
        } else {
            var preserve_statement_flags = !isGeneratorAsterisk;
            handle_whitespace_and_comments(current_token, preserve_statement_flags);
        }

        if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
            // "return" had a special handling in TK_WORD. Now we need to return the favor
            output.space_before_token = true;
            print_token();
            return;
        }

        // hack for actionscript's import .*;
        if (current_token.text === '*' && last_type === 'TK_DOT') {
            print_token();
            return;
        }

        if (current_token.text === '::') {
            // no spaces around exotic namespacing syntax operator
            print_token();
            return;
        }

        // Allow line wrapping between operators when operator_position is
        //   set to before or preserve
        if (last_type === 'TK_OPERATOR' && in_array(opt.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
            allow_wrap_or_preserved_newline();
        }

        if (current_token.text === ':' && flags.in_case) {
            flags.case_body = true;
            indent();
            print_token();
            print_newline();
            flags.in_case = false;
            return;
        }

        var space_before = true;
        var space_after = true;
        var in_ternary = false;
        if (current_token.text === ':') {
            if (flags.ternary_depth === 0) {
                // Colon is invalid javascript outside of ternary and object, but do our best to guess what was meant.
                space_before = false;
            } else {
                flags.ternary_depth -= 1;
                in_ternary = true;
            }
        } else if (current_token.text === '?') {
            flags.ternary_depth += 1;
        }

        // let's handle the operator_position option prior to any conflicting logic
        if (!isUnary && !isGeneratorAsterisk && opt.preserve_newlines && in_array(current_token.text, tokenizer.positionable_operators)) {
            var isColon = current_token.text === ':';
            var isTernaryColon = (isColon && in_ternary);
            var isOtherColon = (isColon && !in_ternary);

            switch (opt.operator_position) {
                case OPERATOR_POSITION.before_newline:
                    // if the current token is : and it's not a ternary statement then we set space_before to false
                    output.space_before_token = !isOtherColon;

                    print_token();

                    if (!isColon || isTernaryColon) {
                        allow_wrap_or_preserved_newline();
                    }

                    output.space_before_token = true;
                    return;

                case OPERATOR_POSITION.after_newline:
                    // if the current token is anything but colon, or (via deduction) it's a colon and in a ternary statement,
                    //   then print a newline.

                    output.space_before_token = true;

                    if (!isColon || isTernaryColon) {
                        if (get_token(1).wanted_newline) {
                            print_newline(false, true);
                        } else {
                            allow_wrap_or_preserved_newline();
                        }
                    } else {
                        output.space_before_token = false;
                    }

                    print_token();

                    output.space_before_token = true;
                    return;

                case OPERATOR_POSITION.preserve_newline:
                    if (!isOtherColon) {
                        allow_wrap_or_preserved_newline();
                    }

                    // if we just added a newline, or the current token is : and it's not a ternary statement,
                    //   then we set space_before to false
                    space_before = !(output.just_added_newline() || isOtherColon);

                    output.space_before_token = space_before;
                    print_token();
                    output.space_before_token = true;
                    return;
            }
        }

        if (isGeneratorAsterisk) {
            allow_wrap_or_preserved_newline();
            space_before = false;
            var next_token = get_token(1);
            space_after = next_token && in_array(next_token.type, ['TK_WORD', 'TK_RESERVED']);
        } else if (current_token.text === '...') {
            allow_wrap_or_preserved_newline();
            space_before = last_type === 'TK_START_BLOCK';
            space_after = false;
        } else if (in_array(current_token.text, ['--', '++', '!', '~']) || isUnary) {
            // unary operators (and binary +/- pretending to be unary) special cases

            space_before = false;
            space_after = false;

            // http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1
            // if there is a newline between -- or ++ and anything else we should preserve it.
            if (current_token.wanted_newline && (current_token.text === '--' || current_token.text === '++')) {
                print_newline(false, true);
            }

            if (flags.last_text === ';' && is_expression(flags.mode)) {
                // for (;; ++i)
                //        ^^^
                space_before = true;
            }

            if (last_type === 'TK_RESERVED') {
                space_before = true;
            } else if (last_type === 'TK_END_EXPR') {
                space_before = !(flags.last_text === ']' && (current_token.text === '--' || current_token.text === '++'));
            } else if (last_type === 'TK_OPERATOR') {
                // a++ + ++b;
                // a - -b
                space_before = in_array(current_token.text, ['--', '-', '++', '+']) && in_array(flags.last_text, ['--', '-', '++', '+']);
                // + and - are not unary when preceeded by -- or ++ operator
                // a-- + b
                // a * +b
                // a - -b
                if (in_array(current_token.text, ['+', '-']) && in_array(flags.last_text, ['--', '++'])) {
                    space_after = true;
                }
            }


            if (((flags.mode === MODE.BlockStatement && !flags.inline_frame) || flags.mode === MODE.Statement) &&
                (flags.last_text === '{' || flags.last_text === ';')) {
                // { foo; --i }
                // foo(); --bar;
                print_newline();
            }
        }

        output.space_before_token = output.space_before_token || space_before;
        print_token();
        output.space_before_token = space_after;
    }

    function handle_block_comment(preserve_statement_flags) {
        if (output.raw) {
            output.add_raw_token(current_token);
            if (current_token.directives && current_token.directives.preserve === 'end') {
                // If we're testing the raw output behavior, do not allow a directive to turn it off.
                output.raw = opt.test_output_raw;
            }
            return;
        }

        if (current_token.directives) {
            print_newline(false, preserve_statement_flags);
            print_token();
            if (current_token.directives.preserve === 'start') {
                output.raw = true;
            }
            print_newline(false, true);
            return;
        }

        // inline block
        if (!acorn.newline.test(current_token.text) && !current_token.wanted_newline) {
            output.space_before_token = true;
            print_token();
            output.space_before_token = true;
            return;
        }

        var lines = split_linebreaks(current_token.text);
        var j; // iterator for this case
        var javadoc = false;
        var starless = false;
        var lastIndent = current_token.whitespace_before;
        var lastIndentLength = lastIndent.length;

        // block comment starts with a new line
        print_newline(false, preserve_statement_flags);
        if (lines.length > 1) {
            javadoc = all_lines_start_with(lines.slice(1), '*');
            starless = each_line_matches_indent(lines.slice(1), lastIndent);
        }

        // first line always indented
        print_token(lines[0]);
        for (j = 1; j < lines.length; j++) {
            print_newline(false, true);
            if (javadoc) {
                // javadoc: reformat and re-indent
                print_token(' ' + ltrim(lines[j]));
            } else if (starless && lines[j].length > lastIndentLength) {
                // starless: re-indent non-empty content, avoiding trim
                print_token(lines[j].substring(lastIndentLength));
            } else {
                // normal comments output raw
                output.add_token(lines[j]);
            }
        }

        // for comments of more than one line, make sure there's a new line after
        print_newline(false, preserve_statement_flags);
    }

    function handle_comment(preserve_statement_flags) {
        if (current_token.wanted_newline) {
            print_newline(false, preserve_statement_flags);
        } else {
            output.trim(true);
        }

        output.space_before_token = true;
        print_token();
        print_newline(false, preserve_statement_flags);
    }

    function handle_dot() {
        if (start_of_statement()) {
            // The conditional starts the statement if appropriate.
        } else {
            handle_whitespace_and_comments(current_token, true);
        }

        if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
            output.space_before_token = true;
        } else {
            // allow preserved newlines before dots in general
            // force newlines on dots after close paren when break_chained - for bar().baz()
            allow_wrap_or_preserved_newline(flags.last_text === ')' && opt.break_chained_methods);
        }

        print_token();
    }

    function handle_unknown(preserve_statement_flags) {
        print_token();

        if (current_token.text[current_token.text.length - 1] === '\n') {
            print_newline(false, preserve_statement_flags);
        }
    }

    function handle_eof() {
        // Unwind any open statements
        while (flags.mode === MODE.Statement) {
            restore_mode();
        }
        handle_whitespace_and_comments(current_token);
    }
}

module.exports.Beautifier = Beautifier;

/***/ }),
/* 2 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

function InputScanner(input) {
    var _input = input;
    var _input_length = _input.length;
    var _position = 0;

    this.back = function() {
        _position -= 1;
    };

    this.hasNext = function() {
        return _position < _input_length;
    };

    this.next = function() {
        var val = null;
        if (this.hasNext()) {
            val = _input.charAt(_position);
            _position += 1;
        }
        return val;
    };

    this.peek = function(index) {
        var val = null;
        index = index || 0;
        index += _position;
        if (index >= 0 && index < _input_length) {
            val = _input.charAt(index);
        }
        return val;
    };

    this.peekCharCode = function(index) {
        var val = 0;
        index = index || 0;
        index += _position;
        if (index >= 0 && index < _input_length) {
            val = _input.charCodeAt(index);
        }
        return val;
    };

    this.test = function(pattern, index) {
        index = index || 0;
        pattern.lastIndex = _position + index;
        return pattern.test(_input);
    };

    this.testChar = function(pattern, index) {
        var val = this.peek(index);
        return val !== null && pattern.test(val);
    };

    this.match = function(pattern) {
        pattern.lastIndex = _position;
        var pattern_match = pattern.exec(_input);
        if (pattern_match && pattern_match.index === _position) {
            _position += pattern_match[0].length;
        } else {
            pattern_match = null;
        }
        return pattern_match;
    };
}


module.exports.InputScanner = InputScanner;


/***/ }),
/* 3 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

function mergeOpts(allOptions, targetType) {
    var finalOpts = {};
    var name;

    for (name in allOptions) {
        if (name !== targetType) {
            finalOpts[name] = allOptions[name];
        }
    }

    //merge in the per type settings for the targetType
    if (targetType in allOptions) {
        for (name in allOptions[targetType]) {
            finalOpts[name] = allOptions[targetType][name];
        }
    }
    return finalOpts;
}

module.exports.mergeOpts = mergeOpts;


/***/ }),
/* 4 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

function OutputLine(parent) {
    var _character_count = 0;
    // use indent_count as a marker for lines that have preserved indentation
    var _indent_count = -1;

    var _items = [];
    var _empty = true;

    this.set_indent = function(level) {
        _character_count = parent.baseIndentLength + level * parent.indent_length;
        _indent_count = level;
    };

    this.get_character_count = function() {
        return _character_count;
    };

    this.is_empty = function() {
        return _empty;
    };

    this.last = function() {
        if (!this._empty) {
            return _items[_items.length - 1];
        } else {
            return null;
        }
    };

    this.push = function(input) {
        _items.push(input);
        _character_count += input.length;
        _empty = false;
    };

    this.pop = function() {
        var item = null;
        if (!_empty) {
            item = _items.pop();
            _character_count -= item.length;
            _empty = _items.length === 0;
        }
        return item;
    };

    this.remove_indent = function() {
        if (_indent_count > 0) {
            _indent_count -= 1;
            _character_count -= parent.indent_length;
        }
    };

    this.trim = function() {
        while (this.last() === ' ') {
            _items.pop();
            _character_count -= 1;
        }
        _empty = _items.length === 0;
    };

    this.toString = function() {
        var result = '';
        if (!this._empty) {
            if (_indent_count >= 0) {
                result = parent.indent_cache[_indent_count];
            }
            result += _items.join('');
        }
        return result;
    };
}

function Output(indent_string, baseIndentString) {
    baseIndentString = baseIndentString || '';
    this.indent_cache = [baseIndentString];
    this.baseIndentLength = baseIndentString.length;
    this.indent_length = indent_string.length;
    this.raw = false;

    var lines = [];
    this.baseIndentString = baseIndentString;
    this.indent_string = indent_string;
    this.previous_line = null;
    this.current_line = null;
    this.space_before_token = false;

    this.add_outputline = function() {
        this.previous_line = this.current_line;
        this.current_line = new OutputLine(this);
        lines.push(this.current_line);
    };

    // initialize
    this.add_outputline();


    this.get_line_number = function() {
        return lines.length;
    };

    // Using object instead of string to allow for later expansion of info about each line
    this.add_new_line = function(force_newline) {
        if (this.get_line_number() === 1 && this.just_added_newline()) {
            return false; // no newline on start of file
        }

        if (force_newline || !this.just_added_newline()) {
            if (!this.raw) {
                this.add_outputline();
            }
            return true;
        }

        return false;
    };

    this.get_code = function(end_with_newline, eol) {
        var sweet_code = lines.join('\n').replace(/[\r\n\t ]+$/, '');

        if (end_with_newline) {
            sweet_code += '\n';
        }

        if (eol !== '\n') {
            sweet_code = sweet_code.replace(/[\n]/g, eol);
        }

        return sweet_code;
    };

    this.set_indent = function(level) {
        // Never indent your first output indent at the start of the file
        if (lines.length > 1) {
            while (level >= this.indent_cache.length) {
                this.indent_cache.push(this.indent_cache[this.indent_cache.length - 1] + this.indent_string);
            }

            this.current_line.set_indent(level);
            return true;
        }
        this.current_line.set_indent(0);
        return false;
    };

    this.add_raw_token = function(token) {
        for (var x = 0; x < token.newlines; x++) {
            this.add_outputline();
        }
        this.current_line.push(token.whitespace_before);
        this.current_line.push(token.text);
        this.space_before_token = false;
    };

    this.add_token = function(printable_token) {
        this.add_space_before_token();
        this.current_line.push(printable_token);
    };

    this.add_space_before_token = function() {
        if (this.space_before_token && !this.just_added_newline()) {
            this.current_line.push(' ');
        }
        this.space_before_token = false;
    };

    this.remove_indent = function(index) {
        var output_length = lines.length;
        while (index < output_length) {
            lines[index].remove_indent();
            index++;
        }
    };

    this.trim = function(eat_newlines) {
        eat_newlines = (eat_newlines === undefined) ? false : eat_newlines;

        this.current_line.trim(indent_string, baseIndentString);

        while (eat_newlines && lines.length > 1 &&
            this.current_line.is_empty()) {
            lines.pop();
            this.current_line = lines[lines.length - 1];
            this.current_line.trim();
        }

        this.previous_line = lines.length > 1 ? lines[lines.length - 2] : null;
    };

    this.just_added_newline = function() {
        return this.current_line.is_empty();
    };

    this.just_added_blankline = function() {
        if (this.just_added_newline()) {
            if (lines.length === 1) {
                return true; // start of the file and newline = blank
            }

            var line = lines[lines.length - 2];
            return line.is_empty();
        }
        return false;
    };
}

module.exports.Output = Output;


/***/ }),
/* 5 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

function Token(type, text, newlines, whitespace_before, parent) {
    this.type = type;
    this.text = text;

    // comments_before are
    // comments that have a new line before them
    // and may or may not have a newline after
    // this is a set of comments before
    this.comments_before = /* inline comment*/ [];


    this.comments_after = []; // no new line before and newline after
    this.newlines = newlines || 0;
    this.wanted_newline = newlines > 0;
    this.whitespace_before = whitespace_before || '';
    this.parent = parent || null;
    this.opened = null;
    this.directives = null;
}

module.exports.Token = Token;


/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

var Beautifier = __webpack_require__(1).Beautifier;

function js_beautify(js_source_text, options) {
    var beautifier = new Beautifier(js_source_text, options);
    return beautifier.beautify();
}

module.exports = js_beautify;

/***/ }),
/* 7 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

var InputScanner = __webpack_require__(2).InputScanner;
var Token = __webpack_require__(5).Token;
var acorn = __webpack_require__(0);

function trim(s) {
    return s.replace(/^\s+|\s+$/g, '');
}

function in_array(what, arr) {
    for (var i = 0; i < arr.length; i += 1) {
        if (arr[i] === what) {
            return true;
        }
    }
    return false;
}

function Tokenizer(input_string, opts) {

    var whitespace = "\n\r\t ".split('');
    var digit = /[0-9]/;
    var digit_bin = /[01]/;
    var digit_oct = /[01234567]/;
    var digit_hex = /[0123456789abcdefABCDEF]/;

    this.positionable_operators = '!= !== % & && * ** + - / : < << <= == === > >= >> >>> ? ^ | ||'.split(' ');
    var punct = this.positionable_operators.concat(
        // non-positionable operators - these do not follow operator position settings
        '! %= &= *= **= ++ += , -- -= /= :: <<= = => >>= >>>= ^= |= ~ ...'.split(' '));

    // words which should always start on new line.
    this.line_starters = 'continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export'.split(',');
    var reserved_words = this.line_starters.concat(['do', 'in', 'of', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof', 'yield', 'async', 'await', 'from', 'as']);

    //  /* ... */ comment ends with nearest */ or end of file
    var block_comment_pattern = /([\s\S]*?)((?:\*\/)|$)/g;

    // comment ends just before nearest linefeed or end of file
    var comment_pattern = /([^\n\r\u2028\u2029]*)/g;

    var directives_block_pattern = /\/\* beautify( \w+[:]\w+)+ \*\//g;
    var directive_pattern = / (\w+)[:](\w+)/g;
    var directives_end_ignore_pattern = /([\s\S]*?)((?:\/\*\sbeautify\signore:end\s\*\/)|$)/g;

    var template_pattern = /((<\?php|<\?=)[\s\S]*?\?>)|(<%[\s\S]*?%>)/g;

    var n_newlines, whitespace_before_token, in_html_comment, tokens;
    var input;

    this.tokenize = function() {
        input = new InputScanner(input_string);
        in_html_comment = false;
        tokens = [];

        var next, last;
        var token_values;
        var open = null;
        var open_stack = [];
        var comments = [];

        while (!(last && last.type === 'TK_EOF')) {
            token_values = tokenize_next();
            next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
            while (next.type === 'TK_COMMENT' || next.type === 'TK_BLOCK_COMMENT' || next.type === 'TK_UNKNOWN') {
                if (next.type === 'TK_BLOCK_COMMENT') {
                    next.directives = token_values[2];
                }
                comments.push(next);
                token_values = tokenize_next();
                next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
            }

            if (comments.length) {
                next.comments_before = comments;
                comments = [];
            }

            if (next.type === 'TK_START_BLOCK' || next.type === 'TK_START_EXPR') {
                next.parent = last;
                open_stack.push(open);
                open = next;
            } else if ((next.type === 'TK_END_BLOCK' || next.type === 'TK_END_EXPR') &&
                (open && (
                    (next.text === ']' && open.text === '[') ||
                    (next.text === ')' && open.text === '(') ||
                    (next.text === '}' && open.text === '{')))) {
                next.parent = open.parent;
                next.opened = open;

                open = open_stack.pop();
            }

            tokens.push(next);
            last = next;
        }

        return tokens;
    };

    function get_directives(text) {
        if (!text.match(directives_block_pattern)) {
            return null;
        }

        var directives = {};
        directive_pattern.lastIndex = 0;
        var directive_match = directive_pattern.exec(text);

        while (directive_match) {
            directives[directive_match[1]] = directive_match[2];
            directive_match = directive_pattern.exec(text);
        }

        return directives;
    }

    function tokenize_next() {
        var resulting_string;
        var whitespace_on_this_line = [];

        n_newlines = 0;
        whitespace_before_token = '';

        var c = input.next();

        if (c === null) {
            return ['', 'TK_EOF'];
        }

        var last_token;
        if (tokens.length) {
            last_token = tokens[tokens.length - 1];
        } else {
            // For the sake of tokenizing we can pretend that there was on open brace to start
            last_token = new Token('TK_START_BLOCK', '{');
        }

        while (in_array(c, whitespace)) {

            if (acorn.newline.test(c)) {
                if (!(c === '\n' && input.peek(-2) === '\r')) {
                    n_newlines += 1;
                    whitespace_on_this_line = [];
                }
            } else {
                whitespace_on_this_line.push(c);
            }

            c = input.next();

            if (c === null) {
                return ['', 'TK_EOF'];
            }
        }

        if (whitespace_on_this_line.length) {
            whitespace_before_token = whitespace_on_this_line.join('');
        }

        if (digit.test(c) || (c === '.' && input.testChar(digit))) {
            var allow_decimal = true;
            var allow_e = true;
            var local_digit = digit;

            if (c === '0' && input.testChar(/[XxOoBb]/)) {
                // switch to hex/oct/bin number, no decimal or e, just hex/oct/bin digits
                allow_decimal = false;
                allow_e = false;
                if (input.testChar(/[Bb]/)) {
                    local_digit = digit_bin;
                } else if (input.testChar(/[Oo]/)) {
                    local_digit = digit_oct;
                } else {
                    local_digit = digit_hex;
                }
                c += input.next();
            } else if (c === '.') {
                // Already have a decimal for this literal, don't allow another
                allow_decimal = false;
            } else {
                // we know this first loop will run.  It keeps the logic simpler.
                c = '';
                input.back();
            }

            // Add the digits
            while (input.testChar(local_digit)) {
                c += input.next();

                if (allow_decimal && input.peek() === '.') {
                    c += input.next();
                    allow_decimal = false;
                }

                // a = 1.e-7 is valid, so we test for . then e in one loop
                if (allow_e && input.testChar(/[Ee]/)) {
                    c += input.next();

                    if (input.testChar(/[+-]/)) {
                        c += input.next();
                    }

                    allow_e = false;
                    allow_decimal = false;
                }
            }

            return [c, 'TK_WORD'];
        }

        if (acorn.isIdentifierStart(input.peekCharCode(-1))) {
            if (input.hasNext()) {
                while (acorn.isIdentifierChar(input.peekCharCode())) {
                    c += input.next();
                    if (!input.hasNext()) {
                        break;
                    }
                }
            }

            if (!(last_token.type === 'TK_DOT' ||
                    (last_token.type === 'TK_RESERVED' && in_array(last_token.text, ['set', 'get']))) &&
                in_array(c, reserved_words)) {
                if (c === 'in' || c === 'of') { // hack for 'in' and 'of' operators
                    return [c, 'TK_OPERATOR'];
                }
                return [c, 'TK_RESERVED'];
            }

            return [c, 'TK_WORD'];
        }

        if (c === '(' || c === '[') {
            return [c, 'TK_START_EXPR'];
        }

        if (c === ')' || c === ']') {
            return [c, 'TK_END_EXPR'];
        }

        if (c === '{') {
            return [c, 'TK_START_BLOCK'];
        }

        if (c === '}') {
            return [c, 'TK_END_BLOCK'];
        }

        if (c === ';') {
            return [c, 'TK_SEMICOLON'];
        }

        if (c === '/') {
            var comment = '';
            var comment_match;
            // peek for comment /* ... */
            if (input.peek() === '*') {
                input.next();
                comment_match = input.match(block_comment_pattern);
                comment = '/*' + comment_match[0];
                var directives = get_directives(comment);
                if (directives && directives.ignore === 'start') {
                    comment_match = input.match(directives_end_ignore_pattern);
                    comment += comment_match[0];
                }
                comment = comment.replace(acorn.allLineBreaks, '\n');
                return [comment, 'TK_BLOCK_COMMENT', directives];
            }
            // peek for comment // ...
            if (input.peek() === '/') {
                input.next();
                comment_match = input.match(comment_pattern);
                comment = '//' + comment_match[0];
                return [comment, 'TK_COMMENT'];
            }

        }

        var startXmlRegExp = /<()([-a-zA-Z:0-9_.]+|{[\s\S]+?}|!\[CDATA\[[\s\S]*?\]\])(\s+{[\s\S]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{[\s\S]+?}))*\s*(\/?)\s*>/g;

        if (c === '`' || c === "'" || c === '"' || // string
            (
                (c === '/') || // regexp
                (opts.e4x && c === "<" && input.test(startXmlRegExp, -1)) // xml
            ) && ( // regex and xml can only appear in specific locations during parsing
                (last_token.type === 'TK_RESERVED' && in_array(last_token.text, ['return', 'case', 'throw', 'else', 'do', 'typeof', 'yield'])) ||
                (last_token.type === 'TK_END_EXPR' && last_token.text === ')' &&
                    last_token.parent && last_token.parent.type === 'TK_RESERVED' && in_array(last_token.parent.text, ['if', 'while', 'for'])) ||
                (in_array(last_token.type, ['TK_COMMENT', 'TK_START_EXPR', 'TK_START_BLOCK',
                    'TK_END_BLOCK', 'TK_OPERATOR', 'TK_EQUALS', 'TK_EOF', 'TK_SEMICOLON', 'TK_COMMA'
                ]))
            )) {

            var sep = c,
                esc = false,
                has_char_escapes = false;

            resulting_string = c;

            if (sep === '/') {
                //
                // handle regexp
                //
                var in_char_class = false;
                while (input.hasNext() &&
                    ((esc || in_char_class || input.peek() !== sep) &&
                        !input.testChar(acorn.newline))) {
                    resulting_string += input.peek();
                    if (!esc) {
                        esc = input.peek() === '\\';
                        if (input.peek() === '[') {
                            in_char_class = true;
                        } else if (input.peek() === ']') {
                            in_char_class = false;
                        }
                    } else {
                        esc = false;
                    }
                    input.next();
                }
            } else if (opts.e4x && sep === '<') {
                //
                // handle e4x xml literals
                //

                var xmlRegExp = /[\s\S]*?<(\/?)([-a-zA-Z:0-9_.]+|{[\s\S]+?}|!\[CDATA\[[\s\S]*?\]\])(\s+{[\s\S]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{[\s\S]+?}))*\s*(\/?)\s*>/g;
                input.back();
                var xmlStr = '';
                var match = input.match(startXmlRegExp);
                if (match) {
                    // Trim root tag to attempt to
                    var rootTag = match[2].replace(/^{\s+/, '{').replace(/\s+}$/, '}');
                    var isCurlyRoot = rootTag.indexOf('{') === 0;
                    var depth = 0;
                    while (match) {
                        var isEndTag = !!match[1];
                        var tagName = match[2];
                        var isSingletonTag = (!!match[match.length - 1]) || (tagName.slice(0, 8) === "![CDATA[");
                        if (!isSingletonTag &&
                            (tagName === rootTag || (isCurlyRoot && tagName.replace(/^{\s+/, '{').replace(/\s+}$/, '}')))) {
                            if (isEndTag) {
                                --depth;
                            } else {
                                ++depth;
                            }
                        }
                        xmlStr += match[0];
                        if (depth <= 0) {
                            break;
                        }
                        match = input.match(xmlRegExp);
                    }
                    // if we didn't close correctly, keep unformatted.
                    if (!match) {
                        xmlStr += input.match(/[\s\S]*/g)[0];
                    }
                    xmlStr = xmlStr.replace(acorn.allLineBreaks, '\n');
                    return [xmlStr, "TK_STRING"];
                }
            } else {
                //
                // handle string
                //
                var parse_string = function(delimiter, allow_unescaped_newlines, start_sub) {
                    // Template strings can travers lines without escape characters.
                    // Other strings cannot
                    var current_char;
                    while (input.hasNext()) {
                        current_char = input.peek();
                        if (!(esc || (current_char !== delimiter &&
                                (allow_unescaped_newlines || !acorn.newline.test(current_char))))) {
                            break;
                        }

                        // Handle \r\n linebreaks after escapes or in template strings
                        if ((esc || allow_unescaped_newlines) && acorn.newline.test(current_char)) {
                            if (current_char === '\r' && input.peek(1) === '\n') {
                                input.next();
                                current_char = input.peek();
                            }
                            resulting_string += '\n';
                        } else {
                            resulting_string += current_char;
                        }

                        if (esc) {
                            if (current_char === 'x' || current_char === 'u') {
                                has_char_escapes = true;
                            }
                            esc = false;
                        } else {
                            esc = current_char === '\\';
                        }

                        input.next();

                        if (start_sub && resulting_string.indexOf(start_sub, resulting_string.length - start_sub.length) !== -1) {
                            if (delimiter === '`') {
                                parse_string('}', allow_unescaped_newlines, '`');
                            } else {
                                parse_string('`', allow_unescaped_newlines, '${');
                            }

                            if (input.hasNext()) {
                                resulting_string += input.next();
                            }
                        }
                    }
                };

                if (sep === '`') {
                    parse_string('`', true, '${');
                } else {
                    parse_string(sep);
                }
            }

            if (has_char_escapes && opts.unescape_strings) {
                resulting_string = unescape_string(resulting_string);
            }

            if (input.peek() === sep) {
                resulting_string += sep;
                input.next();

                if (sep === '/') {
                    // regexps may have modifiers /regexp/MOD , so fetch those, too
                    // Only [gim] are valid, but if the user puts in garbage, do what we can to take it.
                    while (input.hasNext() && acorn.isIdentifierStart(input.peekCharCode())) {
                        resulting_string += input.next();
                    }
                }
            }
            return [resulting_string, 'TK_STRING'];
        }

        if (c === '#') {

            if (tokens.length === 0 && input.peek() === '!') {
                // shebang
                resulting_string = c;
                while (input.hasNext() && c !== '\n') {
                    c = input.next();
                    resulting_string += c;
                }
                return [trim(resulting_string) + '\n', 'TK_UNKNOWN'];
            }



            // Spidermonkey-specific sharp variables for circular references
            // https://developer.mozilla.org/En/Sharp_variables_in_JavaScript
            // http://mxr.mozilla.org/mozilla-central/source/js/src/jsscan.cpp around line 1935
            var sharp = '#';
            if (input.hasNext() && input.testChar(digit)) {
                do {
                    c = input.next();
                    sharp += c;
                } while (input.hasNext() && c !== '#' && c !== '=');
                if (c === '#') {
                    //
                } else if (input.peek() === '[' && input.peek(1) === ']') {
                    sharp += '[]';
                    input.next();
                    input.next();
                } else if (input.peek() === '{' && input.peek(1) === '}') {
                    sharp += '{}';
                    input.next();
                    input.next();
                }
                return [sharp, 'TK_WORD'];
            }
        }

        if (c === '<' && (input.peek() === '?' || input.peek() === '%')) {
            input.back();
            var template_match = input.match(template_pattern);
            if (template_match) {
                c = template_match[0];
                c = c.replace(acorn.allLineBreaks, '\n');
                return [c, 'TK_STRING'];
            }
        }

        if (c === '<' && input.match(/\!--/g)) {
            c = '<!--';
            while (input.hasNext() && !input.testChar(acorn.newline)) {
                c += input.next();
            }
            in_html_comment = true;
            return [c, 'TK_COMMENT'];
        }

        if (c === '-' && in_html_comment && input.match(/->/g)) {
            in_html_comment = false;
            return ['-->', 'TK_COMMENT'];
        }

        if (c === '.') {
            if (input.peek() === '.' && input.peek(1) === '.') {
                c += input.next() + input.next();
                return [c, 'TK_OPERATOR'];
            }
            return [c, 'TK_DOT'];
        }

        if (in_array(c, punct)) {
            while (input.hasNext() && in_array(c + input.peek(), punct)) {
                c += input.next();
                if (!input.hasNext()) {
                    break;
                }
            }

            if (c === ',') {
                return [c, 'TK_COMMA'];
            } else if (c === '=') {
                return [c, 'TK_EQUALS'];
            } else {
                return [c, 'TK_OPERATOR'];
            }
        }

        return [c, 'TK_UNKNOWN'];
    }


    function unescape_string(s) {
        // You think that a regex would work for this
        // return s.replace(/\\x([0-9a-f]{2})/gi, function(match, val) {
        //         return String.fromCharCode(parseInt(val, 16));
        //     })
        // However, dealing with '\xff', '\\xff', '\\\xff' makes this more fun.
        var out = '',
            escaped = 0;

        var input_scan = new InputScanner(s);
        var matched = null;

        while (input_scan.hasNext()) {
            // Keep any whitespace, non-slash characters
            // also keep slash pairs.
            matched = input_scan.match(/([\s]|[^\\]|\\\\)+/g);

            if (matched) {
                out += matched[0];
            }

            if (input_scan.peek() === '\\') {
                input_scan.next();
                if (input_scan.peek() === 'x') {
                    matched = input_scan.match(/x([0-9A-Fa-f]{2})/g);
                } else if (input_scan.peek() === 'u') {
                    matched = input_scan.match(/u([0-9A-Fa-f]{4})/g);
                } else {
                    out += '\\';
                    if (input_scan.hasNext()) {
                        out += input_scan.next();
                    }
                    continue;
                }

                // If there's some error decoding, return the original string
                if (!matched) {
                    return s;
                }

                escaped = parseInt(matched[1], 16);

                if (escaped > 0x7e && escaped <= 0xff && matched[0].indexOf('x') === 0) {
                    // we bail out on \x7f..\xff,
                    // leaving whole string escaped,
                    // as it's probably completely binary
                    return s;
                } else if (escaped >= 0x00 && escaped < 0x20) {
                    // leave 0x00...0x1f escaped
                    out += '\\' + matched[0];
                    continue;
                } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
                    // single-quote, apostrophe, backslash - escape these
                    out += '\\' + String.fromCharCode(escaped);
                } else {
                    out += String.fromCharCode(escaped);
                }
            }
        }

        return out;
    }
}

module.exports.Tokenizer = Tokenizer;

/***/ })
/******/ ]);
var js_beautify = legacy_beautify_js;
/* Footer */
if (true) {
    // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
        return { js_beautify: js_beautify };
    }).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
} else {}

}());


/***/ }),
/* 195 */,
/* 196 */,
/* 197 */,
/* 198 */,
/* 199 */,
/* 200 */,
/* 201 */,
/* 202 */,
/* 203 */,
/* 204 */
/*!***********************************************!*\
  !*** ./node_modules/acorn-walk/dist/walk.mjs ***!
  \***********************************************/
/*! exports provided: simple, ancestor, recursive, full, fullAncestor, findNodeAt, findNodeAround, findNodeAfter, findNodeBefore, make, base */
/*! exports used: recursive */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {

"use strict";
/* unused harmony export simple */
/* unused harmony export ancestor */
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return recursive; });
/* unused harmony export full */
/* unused harmony export fullAncestor */
/* unused harmony export findNodeAt */
/* unused harmony export findNodeAround */
/* unused harmony export findNodeAfter */
/* unused harmony export findNodeBefore */
/* unused harmony export make */
/* unused harmony export base */
// AST walker module for Mozilla Parser API compatible trees

// A simple walk is one where you simply specify callbacks to be
// called on specific nodes. The last two arguments are optional. A
// simple use would be
//
//     walk.simple(myTree, {
//         Expression: function(node) { ... }
//     });
//
// to do something with all expressions. All Parser API node types
// can be used to identify node types, as well as Expression and
// Statement, which denote categories of nodes.
//
// The base argument can be used to pass a custom (recursive)
// walker, and state can be used to give this walked an initial
// state.

function simple(node, visitors, baseVisitor, state, override) {
  if (!baseVisitor) { baseVisitor = base
  ; }(function c(node, st, override) {
    var type = override || node.type, found = visitors[type];
    baseVisitor[type](node, st, c);
    if (found) { found(node, st); }
  })(node, state, override);
}

// An ancestor walk keeps an array of ancestor nodes (including the
// current node) and passes them to the callback as third parameter
// (and also as state parameter when no other state is present).
function ancestor(node, visitors, baseVisitor, state) {
  var ancestors = [];
  if (!baseVisitor) { baseVisitor = base
  ; }(function c(node, st, override) {
    var type = override || node.type, found = visitors[type];
    var isNew = node !== ancestors[ancestors.length - 1];
    if (isNew) { ancestors.push(node); }
    baseVisitor[type](node, st, c);
    if (found) { found(node, st || ancestors, ancestors); }
    if (isNew) { ancestors.pop(); }
  })(node, state);
}

// A recursive walk is one where your functions override the default
// walkers. They can modify and replace the state parameter that's
// threaded through the walk, and can opt how and whether to walk
// their child nodes (by calling their third argument on these
// nodes).
function recursive(node, state, funcs, baseVisitor, override) {
  var visitor = funcs ? make(funcs, baseVisitor || undefined) : baseVisitor;(function c(node, st, override) {
    visitor[override || node.type](node, st, c);
  })(node, state, override);
}

function makeTest(test) {
  if (typeof test === "string")
    { return function (type) { return type === test; } }
  else if (!test)
    { return function () { return true; } }
  else
    { return test }
}

var Found = function Found(node, state) { this.node = node; this.state = state; };

// A full walk triggers the callback on each node
function full(node, callback, baseVisitor, state, override) {
  if (!baseVisitor) { baseVisitor = base
  ; }(function c(node, st, override) {
    var type = override || node.type;
    baseVisitor[type](node, st, c);
    if (!override) { callback(node, st, type); }
  })(node, state, override);
}

// An fullAncestor walk is like an ancestor walk, but triggers
// the callback on each node
function fullAncestor(node, callback, baseVisitor, state) {
  if (!baseVisitor) { baseVisitor = base; }
  var ancestors = [];(function c(node, st, override) {
    var type = override || node.type;
    var isNew = node !== ancestors[ancestors.length - 1];
    if (isNew) { ancestors.push(node); }
    baseVisitor[type](node, st, c);
    if (!override) { callback(node, st || ancestors, ancestors, type); }
    if (isNew) { ancestors.pop(); }
  })(node, state);
}

// Find a node with a given start, end, and type (all are optional,
// null can be used as wildcard). Returns a {node, state} object, or
// undefined when it doesn't find a matching node.
function findNodeAt(node, start, end, test, baseVisitor, state) {
  if (!baseVisitor) { baseVisitor = base; }
  test = makeTest(test);
  try {
    (function c(node, st, override) {
      var type = override || node.type;
      if ((start == null || node.start <= start) &&
          (end == null || node.end >= end))
        { baseVisitor[type](node, st, c); }
      if ((start == null || node.start === start) &&
          (end == null || node.end === end) &&
          test(type, node))
        { throw new Found(node, st) }
    })(node, state);
  } catch (e) {
    if (e instanceof Found) { return e }
    throw e
  }
}

// Find the innermost node of a given type that contains the given
// position. Interface similar to findNodeAt.
function findNodeAround(node, pos, test, baseVisitor, state) {
  test = makeTest(test);
  if (!baseVisitor) { baseVisitor = base; }
  try {
    (function c(node, st, override) {
      var type = override || node.type;
      if (node.start > pos || node.end < pos) { return }
      baseVisitor[type](node, st, c);
      if (test(type, node)) { throw new Found(node, st) }
    })(node, state);
  } catch (e) {
    if (e instanceof Found) { return e }
    throw e
  }
}

// Find the outermost matching node after a given position.
function findNodeAfter(node, pos, test, baseVisitor, state) {
  test = makeTest(test);
  if (!baseVisitor) { baseVisitor = base; }
  try {
    (function c(node, st, override) {
      if (node.end < pos) { return }
      var type = override || node.type;
      if (node.start >= pos && test(type, node)) { throw new Found(node, st) }
      baseVisitor[type](node, st, c);
    })(node, state);
  } catch (e) {
    if (e instanceof Found) { return e }
    throw e
  }
}

// Find the outermost matching node before a given position.
function findNodeBefore(node, pos, test, baseVisitor, state) {
  test = makeTest(test);
  if (!baseVisitor) { baseVisitor = base; }
  var max;(function c(node, st, override) {
    if (node.start > pos) { return }
    var type = override || node.type;
    if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
      { max = new Found(node, st); }
    baseVisitor[type](node, st, c);
  })(node, state);
  return max
}

// Fallback to an Object.create polyfill for older environments.
var create = Object.create || function(proto) {
  function Ctor() {}
  Ctor.prototype = proto;
  return new Ctor
};

// Used to create a custom walker. Will fill in all missing node
// type properties with the defaults.
function make(funcs, baseVisitor) {
  var visitor = create(baseVisitor || base);
  for (var type in funcs) { visitor[type] = funcs[type]; }
  return visitor
}

function skipThrough(node, st, c) { c(node, st); }
function ignore(_node, _st, _c) {}

// Node walkers.

var base = {};

base.Program = base.BlockStatement = function (node, st, c) {
  for (var i = 0, list = node.body; i < list.length; i += 1)
    {
    var stmt = list[i];

    c(stmt, st, "Statement");
  }
};
base.Statement = skipThrough;
base.EmptyStatement = ignore;
base.ExpressionStatement = base.ParenthesizedExpression =
  function (node, st, c) { return c(node.expression, st, "Expression"); };
base.IfStatement = function (node, st, c) {
  c(node.test, st, "Expression");
  c(node.consequent, st, "Statement");
  if (node.alternate) { c(node.alternate, st, "Statement"); }
};
base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); };
base.BreakStatement = base.ContinueStatement = ignore;
base.WithStatement = function (node, st, c) {
  c(node.object, st, "Expression");
  c(node.body, st, "Statement");
};
base.SwitchStatement = function (node, st, c) {
  c(node.discriminant, st, "Expression");
  for (var i = 0, list = node.cases; i < list.length; i += 1) {
    var cs = list[i];

    if (cs.test) { c(cs.test, st, "Expression"); }
    for (var i$1 = 0, list$1 = cs.consequent; i$1 < list$1.length; i$1 += 1)
      {
      var cons = list$1[i$1];

      c(cons, st, "Statement");
    }
  }
};
base.SwitchCase = function (node, st, c) {
  if (node.test) { c(node.test, st, "Expression"); }
  for (var i = 0, list = node.consequent; i < list.length; i += 1)
    {
    var cons = list[i];

    c(cons, st, "Statement");
  }
};
base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
  if (node.argument) { c(node.argument, st, "Expression"); }
};
base.ThrowStatement = base.SpreadElement =
  function (node, st, c) { return c(node.argument, st, "Expression"); };
base.TryStatement = function (node, st, c) {
  c(node.block, st, "Statement");
  if (node.handler) { c(node.handler, st); }
  if (node.finalizer) { c(node.finalizer, st, "Statement"); }
};
base.CatchClause = function (node, st, c) {
  if (node.param) { c(node.param, st, "Pattern"); }
  c(node.body, st, "Statement");
};
base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
  c(node.test, st, "Expression");
  c(node.body, st, "Statement");
};
base.ForStatement = function (node, st, c) {
  if (node.init) { c(node.init, st, "ForInit"); }
  if (node.test) { c(node.test, st, "Expression"); }
  if (node.update) { c(node.update, st, "Expression"); }
  c(node.body, st, "Statement");
};
base.ForInStatement = base.ForOfStatement = function (node, st, c) {
  c(node.left, st, "ForInit");
  c(node.right, st, "Expression");
  c(node.body, st, "Statement");
};
base.ForInit = function (node, st, c) {
  if (node.type === "VariableDeclaration") { c(node, st); }
  else { c(node, st, "Expression"); }
};
base.DebuggerStatement = ignore;

base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); };
base.VariableDeclaration = function (node, st, c) {
  for (var i = 0, list = node.declarations; i < list.length; i += 1)
    {
    var decl = list[i];

    c(decl, st);
  }
};
base.VariableDeclarator = function (node, st, c) {
  c(node.id, st, "Pattern");
  if (node.init) { c(node.init, st, "Expression"); }
};

base.Function = function (node, st, c) {
  if (node.id) { c(node.id, st, "Pattern"); }
  for (var i = 0, list = node.params; i < list.length; i += 1)
    {
    var param = list[i];

    c(param, st, "Pattern");
  }
  c(node.body, st, node.expression ? "Expression" : "Statement");
};

base.Pattern = function (node, st, c) {
  if (node.type === "Identifier")
    { c(node, st, "VariablePattern"); }
  else if (node.type === "MemberExpression")
    { c(node, st, "MemberPattern"); }
  else
    { c(node, st); }
};
base.VariablePattern = ignore;
base.MemberPattern = skipThrough;
base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); };
base.ArrayPattern = function (node, st, c) {
  for (var i = 0, list = node.elements; i < list.length; i += 1) {
    var elt = list[i];

    if (elt) { c(elt, st, "Pattern"); }
  }
};
base.ObjectPattern = function (node, st, c) {
  for (var i = 0, list = node.properties; i < list.length; i += 1) {
    var prop = list[i];

    if (prop.type === "Property") {
      if (prop.computed) { c(prop.key, st, "Expression"); }
      c(prop.value, st, "Pattern");
    } else if (prop.type === "RestElement") {
      c(prop.argument, st, "Pattern");
    }
  }
};

base.Expression = skipThrough;
base.ThisExpression = base.Super = base.MetaProperty = ignore;
base.ArrayExpression = function (node, st, c) {
  for (var i = 0, list = node.elements; i < list.length; i += 1) {
    var elt = list[i];

    if (elt) { c(elt, st, "Expression"); }
  }
};
base.ObjectExpression = function (node, st, c) {
  for (var i = 0, list = node.properties; i < list.length; i += 1)
    {
    var prop = list[i];

    c(prop, st);
  }
};
base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
base.SequenceExpression = function (node, st, c) {
  for (var i = 0, list = node.expressions; i < list.length; i += 1)
    {
    var expr = list[i];

    c(expr, st, "Expression");
  }
};
base.TemplateLiteral = function (node, st, c) {
  for (var i = 0, list = node.quasis; i < list.length; i += 1)
    {
    var quasi = list[i];

    c(quasi, st);
  }

  for (var i$1 = 0, list$1 = node.expressions; i$1 < list$1.length; i$1 += 1)
    {
    var expr = list$1[i$1];

    c(expr, st, "Expression");
  }
};
base.TemplateElement = ignore;
base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
  c(node.argument, st, "Expression");
};
base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
  c(node.left, st, "Expression");
  c(node.right, st, "Expression");
};
base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
  c(node.left, st, "Pattern");
  c(node.right, st, "Expression");
};
base.ConditionalExpression = function (node, st, c) {
  c(node.test, st, "Expression");
  c(node.consequent, st, "Expression");
  c(node.alternate, st, "Expression");
};
base.NewExpression = base.CallExpression = function (node, st, c) {
  c(node.callee, st, "Expression");
  if (node.arguments)
    { for (var i = 0, list = node.arguments; i < list.length; i += 1)
      {
        var arg = list[i];

        c(arg, st, "Expression");
      } }
};
base.MemberExpression = function (node, st, c) {
  c(node.object, st, "Expression");
  if (node.computed) { c(node.property, st, "Expression"); }
};
base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
  if (node.declaration)
    { c(node.declaration, st, node.type === "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); }
  if (node.source) { c(node.source, st, "Expression"); }
};
base.ExportAllDeclaration = function (node, st, c) {
  c(node.source, st, "Expression");
};
base.ImportDeclaration = function (node, st, c) {
  for (var i = 0, list = node.specifiers; i < list.length; i += 1)
    {
    var spec = list[i];

    c(spec, st);
  }
  c(node.source, st, "Expression");
};
base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore;

base.TaggedTemplateExpression = function (node, st, c) {
  c(node.tag, st, "Expression");
  c(node.quasi, st, "Expression");
};
base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); };
base.Class = function (node, st, c) {
  if (node.id) { c(node.id, st, "Pattern"); }
  if (node.superClass) { c(node.superClass, st, "Expression"); }
  c(node.body, st);
};
base.ClassBody = function (node, st, c) {
  for (var i = 0, list = node.body; i < list.length; i += 1)
    {
    var elt = list[i];

    c(elt, st);
  }
};
base.MethodDefinition = base.Property = function (node, st, c) {
  if (node.computed) { c(node.key, st, "Expression"); }
  c(node.value, st, "Expression");
};


//# sourceMappingURL=walk.mjs.map


/***/ }),
/* 205 */
/*!*************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/array-set.js ***!
  \*************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = __webpack_require__(/*! ./util */ 142);
var has = Object.prototype.hasOwnProperty;
var hasNativeMap = typeof Map !== "undefined";

/**
 * A data structure which is a combination of an array and a set. Adding a new
 * member is O(1), testing for membership is O(1), and finding the index of an
 * element is O(1). Removing elements from the set is not supported. Only
 * strings are supported for membership.
 */
function ArraySet() {
  this._array = [];
  this._set = hasNativeMap ? new Map() : Object.create(null);
}

/**
 * Static method for creating ArraySet instances from an existing array.
 */
ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
  var set = new ArraySet();
  for (var i = 0, len = aArray.length; i < len; i++) {
    set.add(aArray[i], aAllowDuplicates);
  }
  return set;
};

/**
 * Return how many unique items are in this ArraySet. If duplicates have been
 * added, than those do not count towards the size.
 *
 * @returns Number
 */
ArraySet.prototype.size = function ArraySet_size() {
  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
};

/**
 * Add the given string to this set.
 *
 * @param String aStr
 */
ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
  var idx = this._array.length;
  if (!isDuplicate || aAllowDuplicates) {
    this._array.push(aStr);
  }
  if (!isDuplicate) {
    if (hasNativeMap) {
      this._set.set(aStr, idx);
    } else {
      this._set[sStr] = idx;
    }
  }
};

/**
 * Is the given string a member of this set?
 *
 * @param String aStr
 */
ArraySet.prototype.has = function ArraySet_has(aStr) {
  if (hasNativeMap) {
    return this._set.has(aStr);
  } else {
    var sStr = util.toSetString(aStr);
    return has.call(this._set, sStr);
  }
};

/**
 * What is the index of the given string in the array?
 *
 * @param String aStr
 */
ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
  if (hasNativeMap) {
    var idx = this._set.get(aStr);
    if (idx >= 0) {
        return idx;
    }
  } else {
    var sStr = util.toSetString(aStr);
    if (has.call(this._set, sStr)) {
      return this._set[sStr];
    }
  }

  throw new Error('"' + aStr + '" is not in the set.');
};

/**
 * What is the element at the given index?
 *
 * @param Number aIdx
 */
ArraySet.prototype.at = function ArraySet_at(aIdx) {
  if (aIdx >= 0 && aIdx < this._array.length) {
    return this._array[aIdx];
  }
  throw new Error('No element indexed by ' + aIdx);
};

/**
 * Returns the array representation of this set (which has the proper indices
 * indicated by indexOf). Note that this is a copy of the internal array used
 * for storing the members so that no one can mess with internal state.
 */
ArraySet.prototype.toArray = function ArraySet_toArray() {
  return this._array.slice();
};

exports.ArraySet = ArraySet;


/***/ }),
/* 206 */
/*!**************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/base64-vlq.js ***!
  \**************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

var base64 = __webpack_require__(/*! ./base64 */ 376);

// A single base 64 digit can contain 6 bits of data. For the base 64 variable
// length quantities we use in the source map spec, the first bit is the sign,
// the next four bits are the actual value, and the 6th bit is the
// continuation bit. The continuation bit tells us whether there are more
// digits in this value following this digit.
//
//   Continuation
//   |    Sign
//   |    |
//   V    V
//   101011

var VLQ_BASE_SHIFT = 5;

// binary: 100000
var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

// binary: 011111
var VLQ_BASE_MASK = VLQ_BASE - 1;

// binary: 100000
var VLQ_CONTINUATION_BIT = VLQ_BASE;

/**
 * Converts from a two-complement value to a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
 *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
 */
function toVLQSigned(aValue) {
  return aValue < 0
    ? ((-aValue) << 1) + 1
    : (aValue << 1) + 0;
}

/**
 * Converts to a two-complement value from a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
 *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
 */
function fromVLQSigned(aValue) {
  var isNegative = (aValue & 1) === 1;
  var shifted = aValue >> 1;
  return isNegative
    ? -shifted
    : shifted;
}

/**
 * Returns the base 64 VLQ encoded value.
 */
exports.encode = function base64VLQ_encode(aValue) {
  var encoded = "";
  var digit;

  var vlq = toVLQSigned(aValue);

  do {
    digit = vlq & VLQ_BASE_MASK;
    vlq >>>= VLQ_BASE_SHIFT;
    if (vlq > 0) {
      // There are still more digits in this value, so we must make sure the
      // continuation bit is marked.
      digit |= VLQ_CONTINUATION_BIT;
    }
    encoded += base64.encode(digit);
  } while (vlq > 0);

  return encoded;
};

/**
 * Decodes the next base 64 VLQ value from the given string and returns the
 * value and the rest of the string via the out parameter.
 */
exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
  var strLen = aStr.length;
  var result = 0;
  var shift = 0;
  var continuation, digit;

  do {
    if (aIndex >= strLen) {
      throw new Error("Expected more digits in base 64 VLQ value.");
    }

    digit = base64.decode(aStr.charCodeAt(aIndex++));
    if (digit === -1) {
      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
    }

    continuation = !!(digit & VLQ_CONTINUATION_BIT);
    digit &= VLQ_BASE_MASK;
    result = result + (digit << shift);
    shift += VLQ_BASE_SHIFT;
  } while (continuation);

  aOutParam.value = fromVLQSigned(result);
  aOutParam.rest = aIndex;
};


/***/ }),
/* 207 */
/*!************************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/source-map-generator.js ***!
  \************************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var base64VLQ = __webpack_require__(/*! ./base64-vlq */ 206);
var util = __webpack_require__(/*! ./util */ 142);
var ArraySet = __webpack_require__(/*! ./array-set */ 205).ArraySet;
var MappingList = __webpack_require__(/*! ./mapping-list */ 375).MappingList;

/**
 * An instance of the SourceMapGenerator represents a source map which is
 * being built incrementally. You may pass an object with the following
 * properties:
 *
 *   - file: The filename of the generated source.
 *   - sourceRoot: A root for all relative URLs in this source map.
 */
function SourceMapGenerator(aArgs) {
  if (!aArgs) {
    aArgs = {};
  }
  this._file = util.getArg(aArgs, 'file', null);
  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
  this._sources = new ArraySet();
  this._names = new ArraySet();
  this._mappings = new MappingList();
  this._sourcesContents = null;
}

SourceMapGenerator.prototype._version = 3;

/**
 * Creates a new SourceMapGenerator based on a SourceMapConsumer
 *
 * @param aSourceMapConsumer The SourceMap.
 */
SourceMapGenerator.fromSourceMap =
  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
    var sourceRoot = aSourceMapConsumer.sourceRoot;
    var generator = new SourceMapGenerator({
      file: aSourceMapConsumer.file,
      sourceRoot: sourceRoot
    });
    aSourceMapConsumer.eachMapping(function (mapping) {
      var newMapping = {
        generated: {
          line: mapping.generatedLine,
          column: mapping.generatedColumn
        }
      };

      if (mapping.source != null) {
        newMapping.source = mapping.source;
        if (sourceRoot != null) {
          newMapping.source = util.relative(sourceRoot, newMapping.source);
        }

        newMapping.original = {
          line: mapping.originalLine,
          column: mapping.originalColumn
        };

        if (mapping.name != null) {
          newMapping.name = mapping.name;
        }
      }

      generator.addMapping(newMapping);
    });
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var sourceRelative = sourceFile;
      if (sourceRoot !== null) {
        sourceRelative = util.relative(sourceRoot, sourceFile);
      }

      if (!generator._sources.has(sourceRelative)) {
        generator._sources.add(sourceRelative);
      }

      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        generator.setSourceContent(sourceFile, content);
      }
    });
    return generator;
  };

/**
 * Add a single mapping from original source line and column to the generated
 * source's line and column for this source map being created. The mapping
 * object should have the following properties:
 *
 *   - generated: An object with the generated line and column positions.
 *   - original: An object with the original line and column positions.
 *   - source: The original source file (relative to the sourceRoot).
 *   - name: An optional original token name for this mapping.
 */
SourceMapGenerator.prototype.addMapping =
  function SourceMapGenerator_addMapping(aArgs) {
    var generated = util.getArg(aArgs, 'generated');
    var original = util.getArg(aArgs, 'original', null);
    var source = util.getArg(aArgs, 'source', null);
    var name = util.getArg(aArgs, 'name', null);

    if (!this._skipValidation) {
      this._validateMapping(generated, original, source, name);
    }

    if (source != null) {
      source = String(source);
      if (!this._sources.has(source)) {
        this._sources.add(source);
      }
    }

    if (name != null) {
      name = String(name);
      if (!this._names.has(name)) {
        this._names.add(name);
      }
    }

    this._mappings.add({
      generatedLine: generated.line,
      generatedColumn: generated.column,
      originalLine: original != null && original.line,
      originalColumn: original != null && original.column,
      source: source,
      name: name
    });
  };

/**
 * Set the source content for a source file.
 */
SourceMapGenerator.prototype.setSourceContent =
  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
    var source = aSourceFile;
    if (this._sourceRoot != null) {
      source = util.relative(this._sourceRoot, source);
    }

    if (aSourceContent != null) {
      // Add the source content to the _sourcesContents map.
      // Create a new _sourcesContents map if the property is null.
      if (!this._sourcesContents) {
        this._sourcesContents = Object.create(null);
      }
      this._sourcesContents[util.toSetString(source)] = aSourceContent;
    } else if (this._sourcesContents) {
      // Remove the source file from the _sourcesContents map.
      // If the _sourcesContents map is empty, set the property to null.
      delete this._sourcesContents[util.toSetString(source)];
      if (Object.keys(this._sourcesContents).length === 0) {
        this._sourcesContents = null;
      }
    }
  };

/**
 * Applies the mappings of a sub-source-map for a specific source file to the
 * source map being generated. Each mapping to the supplied source file is
 * rewritten using the supplied source map. Note: The resolution for the
 * resulting mappings is the minimium of this map and the supplied map.
 *
 * @param aSourceMapConsumer The source map to be applied.
 * @param aSourceFile Optional. The filename of the source file.
 *        If omitted, SourceMapConsumer's file property will be used.
 * @param aSourceMapPath Optional. The dirname of the path to the source map
 *        to be applied. If relative, it is relative to the SourceMapConsumer.
 *        This parameter is needed when the two source maps aren't in the same
 *        directory, and the source map to be applied contains relative source
 *        paths. If so, those relative source paths need to be rewritten
 *        relative to the SourceMapGenerator.
 */
SourceMapGenerator.prototype.applySourceMap =
  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
    var sourceFile = aSourceFile;
    // If aSourceFile is omitted, we will use the file property of the SourceMap
    if (aSourceFile == null) {
      if (aSourceMapConsumer.file == null) {
        throw new Error(
          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
          'or the source map\'s "file" property. Both were omitted.'
        );
      }
      sourceFile = aSourceMapConsumer.file;
    }
    var sourceRoot = this._sourceRoot;
    // Make "sourceFile" relative if an absolute Url is passed.
    if (sourceRoot != null) {
      sourceFile = util.relative(sourceRoot, sourceFile);
    }
    // Applying the SourceMap can add and remove items from the sources and
    // the names array.
    var newSources = new ArraySet();
    var newNames = new ArraySet();

    // Find mappings for the "sourceFile"
    this._mappings.unsortedForEach(function (mapping) {
      if (mapping.source === sourceFile && mapping.originalLine != null) {
        // Check if it can be mapped by the source map, then update the mapping.
        var original = aSourceMapConsumer.originalPositionFor({
          line: mapping.originalLine,
          column: mapping.originalColumn
        });
        if (original.source != null) {
          // Copy mapping
          mapping.source = original.source;
          if (aSourceMapPath != null) {
            mapping.source = util.join(aSourceMapPath, mapping.source)
          }
          if (sourceRoot != null) {
            mapping.source = util.relative(sourceRoot, mapping.source);
          }
          mapping.originalLine = original.line;
          mapping.originalColumn = original.column;
          if (original.name != null) {
            mapping.name = original.name;
          }
        }
      }

      var source = mapping.source;
      if (source != null && !newSources.has(source)) {
        newSources.add(source);
      }

      var name = mapping.name;
      if (name != null && !newNames.has(name)) {
        newNames.add(name);
      }

    }, this);
    this._sources = newSources;
    this._names = newNames;

    // Copy sourcesContents of applied map.
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aSourceMapPath != null) {
          sourceFile = util.join(aSourceMapPath, sourceFile);
        }
        if (sourceRoot != null) {
          sourceFile = util.relative(sourceRoot, sourceFile);
        }
        this.setSourceContent(sourceFile, content);
      }
    }, this);
  };

/**
 * A mapping can have one of the three levels of data:
 *
 *   1. Just the generated position.
 *   2. The Generated position, original position, and original source.
 *   3. Generated and original position, original source, as well as a name
 *      token.
 *
 * To maintain consistency, we validate that any new mapping being added falls
 * in to one of these categories.
 */
SourceMapGenerator.prototype._validateMapping =
  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                              aName) {
    // When aOriginal is truthy but has empty values for .line and .column,
    // it is most likely a programmer error. In this case we throw a very
    // specific error message to try to guide them the right way.
    // For example: https://github.com/Polymer/polymer-bundler/pull/519
    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
        throw new Error(
            'original.line and original.column are not numbers -- you probably meant to omit ' +
            'the original mapping entirely and only map the generated position. If so, pass ' +
            'null for the original mapping instead of an object with empty or null values.'
        );
    }

    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
        && aGenerated.line > 0 && aGenerated.column >= 0
        && !aOriginal && !aSource && !aName) {
      // Case 1.
      return;
    }
    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
             && aGenerated.line > 0 && aGenerated.column >= 0
             && aOriginal.line > 0 && aOriginal.column >= 0
             && aSource) {
      // Cases 2 and 3.
      return;
    }
    else {
      throw new Error('Invalid mapping: ' + JSON.stringify({
        generated: aGenerated,
        source: aSource,
        original: aOriginal,
        name: aName
      }));
    }
  };

/**
 * Serialize the accumulated mappings in to the stream of base 64 VLQs
 * specified by the source map format.
 */
SourceMapGenerator.prototype._serializeMappings =
  function SourceMapGenerator_serializeMappings() {
    var previousGeneratedColumn = 0;
    var previousGeneratedLine = 1;
    var previousOriginalColumn = 0;
    var previousOriginalLine = 0;
    var previousName = 0;
    var previousSource = 0;
    var result = '';
    var next;
    var mapping;
    var nameIdx;
    var sourceIdx;

    var mappings = this._mappings.toArray();
    for (var i = 0, len = mappings.length; i < len; i++) {
      mapping = mappings[i];
      next = ''

      if (mapping.generatedLine !== previousGeneratedLine) {
        previousGeneratedColumn = 0;
        while (mapping.generatedLine !== previousGeneratedLine) {
          next += ';';
          previousGeneratedLine++;
        }
      }
      else {
        if (i > 0) {
          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
            continue;
          }
          next += ',';
        }
      }

      next += base64VLQ.encode(mapping.generatedColumn
                                 - previousGeneratedColumn);
      previousGeneratedColumn = mapping.generatedColumn;

      if (mapping.source != null) {
        sourceIdx = this._sources.indexOf(mapping.source);
        next += base64VLQ.encode(sourceIdx - previousSource);
        previousSource = sourceIdx;

        // lines are stored 0-based in SourceMap spec version 3
        next += base64VLQ.encode(mapping.originalLine - 1
                                   - previousOriginalLine);
        previousOriginalLine = mapping.originalLine - 1;

        next += base64VLQ.encode(mapping.originalColumn
                                   - previousOriginalColumn);
        previousOriginalColumn = mapping.originalColumn;

        if (mapping.name != null) {
          nameIdx = this._names.indexOf(mapping.name);
          next += base64VLQ.encode(nameIdx - previousName);
          previousName = nameIdx;
        }
      }

      result += next;
    }

    return result;
  };

SourceMapGenerator.prototype._generateSourcesContent =
  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
    return aSources.map(function (source) {
      if (!this._sourcesContents) {
        return null;
      }
      if (aSourceRoot != null) {
        source = util.relative(aSourceRoot, source);
      }
      var key = util.toSetString(source);
      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
        ? this._sourcesContents[key]
        : null;
    }, this);
  };

/**
 * Externalize the source map.
 */
SourceMapGenerator.prototype.toJSON =
  function SourceMapGenerator_toJSON() {
    var map = {
      version: this._version,
      sources: this._sources.toArray(),
      names: this._names.toArray(),
      mappings: this._serializeMappings()
    };
    if (this._file != null) {
      map.file = this._file;
    }
    if (this._sourceRoot != null) {
      map.sourceRoot = this._sourceRoot;
    }
    if (this._sourcesContents) {
      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
    }

    return map;
  };

/**
 * Render the source map being generated to a string.
 */
SourceMapGenerator.prototype.toString =
  function SourceMapGenerator_toString() {
    return JSON.stringify(this.toJSON());
  };

exports.SourceMapGenerator = SourceMapGenerator;


/***/ }),
/* 208 */
/*!******************************************!*\
  !*** ./node_modules/esutils/lib/code.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/*
  Copyright (C) 2013-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;

    // See `tools/generate-identifier-regex.js`.
    ES5Regex = {
        // ECMAScript 5.1/Unicode v7.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B2\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/,
        // ECMAScript 5.1/Unicode v7.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: 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    };

    ES6Regex = {
        // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: 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        // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: /[\xAA\xB5\xB7\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B2\u08E4-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C81-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1369-\u1371\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA69D\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2D\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDD0-\uDDDA\uDE00-\uDE11\uDE13-\uDE37\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF01-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF98]|\uD809[\uDC00-\uDC6E]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
    };

    function isDecimalDigit(ch) {
        return 0x30 <= ch && ch <= 0x39;  // 0..9
    }

    function isHexDigit(ch) {
        return 0x30 <= ch && ch <= 0x39 ||  // 0..9
            0x61 <= ch && ch <= 0x66 ||     // a..f
            0x41 <= ch && ch <= 0x46;       // A..F
    }

    function isOctalDigit(ch) {
        return ch >= 0x30 && ch <= 0x37;  // 0..7
    }

    // 7.2 White Space

    NON_ASCII_WHITESPACES = [
        0x1680, 0x180E,
        0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A,
        0x202F, 0x205F,
        0x3000,
        0xFEFF
    ];

    function isWhiteSpace(ch) {
        return ch === 0x20 || ch === 0x09 || ch === 0x0B || ch === 0x0C || ch === 0xA0 ||
            ch >= 0x1680 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return ch === 0x0A || ch === 0x0D || ch === 0x2028 || ch === 0x2029;
    }

    // 7.6 Identifier Names and Identifiers

    function fromCodePoint(cp) {
        if (cp <= 0xFFFF) { return String.fromCharCode(cp); }
        var cu1 = String.fromCharCode(Math.floor((cp - 0x10000) / 0x400) + 0xD800);
        var cu2 = String.fromCharCode(((cp - 0x10000) % 0x400) + 0xDC00);
        return cu1 + cu2;
    }

    IDENTIFIER_START = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_START[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    IDENTIFIER_PART = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_PART[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch >= 0x30 && ch <= 0x39 ||  // 0..9
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    function isIdentifierStartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    function isIdentifierStartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    module.exports = {
        isDecimalDigit: isDecimalDigit,
        isHexDigit: isHexDigit,
        isOctalDigit: isOctalDigit,
        isWhiteSpace: isWhiteSpace,
        isLineTerminator: isLineTerminator,
        isIdentifierStartES5: isIdentifierStartES5,
        isIdentifierPartES5: isIdentifierPartES5,
        isIdentifierStartES6: isIdentifierStartES6,
        isIdentifierPartES6: isIdentifierPartES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */


/***/ }),
/* 209 */
/*!***********************************************************!*\
  !*** ./node_modules/jszip/lib/reader/Uint8ArrayReader.js ***!
  \***********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var ArrayReader = __webpack_require__(/*! ./ArrayReader */ 211);
var utils = __webpack_require__(/*! ../utils */ 60);

function Uint8ArrayReader(data) {
    ArrayReader.call(this, data);
}
utils.inherits(Uint8ArrayReader, ArrayReader);
/**
 * @see DataReader.readData
 */
Uint8ArrayReader.prototype.readData = function(size) {
    this.checkOffset(size);
    if(size === 0) {
        // in IE10, when using subarray(idx, idx), we get the array [0x00] instead of [].
        return new Uint8Array(0);
    }
    var result = this.data.subarray(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = Uint8ArrayReader;


/***/ }),
/* 210 */
/*!*****************************************************!*\
  !*** ./node_modules/jszip/lib/reader/DataReader.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var utils = __webpack_require__(/*! ../utils */ 60);

function DataReader(data) {
    this.data = data; // type : see implementation
    this.length = data.length;
    this.index = 0;
    this.zero = 0;
}
DataReader.prototype = {
    /**
     * Check that the offset will not go too far.
     * @param {string} offset the additional offset to check.
     * @throws {Error} an Error if the offset is out of bounds.
     */
    checkOffset: function(offset) {
        this.checkIndex(this.index + offset);
    },
    /**
     * Check that the specified index will not be too far.
     * @param {string} newIndex the index to check.
     * @throws {Error} an Error if the index is out of bounds.
     */
    checkIndex: function(newIndex) {
        if (this.length < this.zero + newIndex || newIndex < 0) {
            throw new Error("End of data reached (data length = " + this.length + ", asked index = " + (newIndex) + "). Corrupted zip ?");
        }
    },
    /**
     * Change the index.
     * @param {number} newIndex The new index.
     * @throws {Error} if the new index is out of the data.
     */
    setIndex: function(newIndex) {
        this.checkIndex(newIndex);
        this.index = newIndex;
    },
    /**
     * Skip the next n bytes.
     * @param {number} n the number of bytes to skip.
     * @throws {Error} if the new index is out of the data.
     */
    skip: function(n) {
        this.setIndex(this.index + n);
    },
    /**
     * Get the byte at the specified index.
     * @param {number} i the index to use.
     * @return {number} a byte.
     */
    byteAt: function(i) {
        // see implementations
    },
    /**
     * Get the next number with a given byte size.
     * @param {number} size the number of bytes to read.
     * @return {number} the corresponding number.
     */
    readInt: function(size) {
        var result = 0,
            i;
        this.checkOffset(size);
        for (i = this.index + size - 1; i >= this.index; i--) {
            result = (result << 8) + this.byteAt(i);
        }
        this.index += size;
        return result;
    },
    /**
     * Get the next string with a given byte size.
     * @param {number} size the number of bytes to read.
     * @return {string} the corresponding string.
     */
    readString: function(size) {
        return utils.transformTo("string", this.readData(size));
    },
    /**
     * Get raw data without conversion, <size> bytes.
     * @param {number} size the number of bytes to read.
     * @return {Object} the raw data, implementation specific.
     */
    readData: function(size) {
        // see implementations
    },
    /**
     * Find the last occurence of a zip signature (4 bytes).
     * @param {string} sig the signature to find.
     * @return {number} the index of the last occurence, -1 if not found.
     */
    lastIndexOfSignature: function(sig) {
        // see implementations
    },
    /**
     * Read the signature (4 bytes) at the current position and compare it with sig.
     * @param {string} sig the expected signature
     * @return {boolean} true if the signature matches, false otherwise.
     */
    readAndCheckSignature: function(sig) {
        // see implementations
    },
    /**
     * Get the next date.
     * @return {Date} the date.
     */
    readDate: function() {
        var dostime = this.readInt(4);
        return new Date(Date.UTC(
        ((dostime >> 25) & 0x7f) + 1980, // year
        ((dostime >> 21) & 0x0f) - 1, // month
        (dostime >> 16) & 0x1f, // day
        (dostime >> 11) & 0x1f, // hour
        (dostime >> 5) & 0x3f, // minute
        (dostime & 0x1f) << 1)); // second
    }
};
module.exports = DataReader;


/***/ }),
/* 211 */
/*!******************************************************!*\
  !*** ./node_modules/jszip/lib/reader/ArrayReader.js ***!
  \******************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var DataReader = __webpack_require__(/*! ./DataReader */ 210);
var utils = __webpack_require__(/*! ../utils */ 60);

function ArrayReader(data) {
    DataReader.call(this, data);
	for(var i = 0; i < this.data.length; i++) {
		data[i] = data[i] & 0xFF;
	}
}
utils.inherits(ArrayReader, DataReader);
/**
 * @see DataReader.byteAt
 */
ArrayReader.prototype.byteAt = function(i) {
    return this.data[this.zero + i];
};
/**
 * @see DataReader.lastIndexOfSignature
 */
ArrayReader.prototype.lastIndexOfSignature = function(sig) {
    var sig0 = sig.charCodeAt(0),
        sig1 = sig.charCodeAt(1),
        sig2 = sig.charCodeAt(2),
        sig3 = sig.charCodeAt(3);
    for (var i = this.length - 4; i >= 0; --i) {
        if (this.data[i] === sig0 && this.data[i + 1] === sig1 && this.data[i + 2] === sig2 && this.data[i + 3] === sig3) {
            return i - this.zero;
        }
    }

    return -1;
};
/**
 * @see DataReader.readAndCheckSignature
 */
ArrayReader.prototype.readAndCheckSignature = function (sig) {
    var sig0 = sig.charCodeAt(0),
        sig1 = sig.charCodeAt(1),
        sig2 = sig.charCodeAt(2),
        sig3 = sig.charCodeAt(3),
        data = this.readData(4);
    return sig0 === data[0] && sig1 === data[1] && sig2 === data[2] && sig3 === data[3];
};
/**
 * @see DataReader.readData
 */
ArrayReader.prototype.readData = function(size) {
    this.checkOffset(size);
    if(size === 0) {
        return [];
    }
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = ArrayReader;


/***/ }),
/* 212 */
/*!****************************************************!*\
  !*** ./node_modules/jszip/lib/reader/readerFor.js ***!
  \****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ../utils */ 60);
var support = __webpack_require__(/*! ../support */ 113);
var ArrayReader = __webpack_require__(/*! ./ArrayReader */ 211);
var StringReader = __webpack_require__(/*! ./StringReader */ 389);
var NodeBufferReader = __webpack_require__(/*! ./NodeBufferReader */ 388);
var Uint8ArrayReader = __webpack_require__(/*! ./Uint8ArrayReader */ 209);

/**
 * Create a reader adapted to the data.
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data to read.
 * @return {DataReader} the data reader.
 */
module.exports = function (data) {
    var type = utils.getTypeOf(data);
    utils.checkSupport(type);
    if (type === "string" && !support.uint8array) {
        return new StringReader(data);
    }
    if (type === "nodebuffer") {
        return new NodeBufferReader(data);
    }
    if (support.uint8array) {
        return new Uint8ArrayReader(utils.transformTo("uint8array", data));
    }
    return new ArrayReader(utils.transformTo("array", data));
};


/***/ }),
/* 213 */
/*!*********************************************!*\
  !*** ./node_modules/jszip/lib/signature.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

exports.LOCAL_FILE_HEADER = "PK\x03\x04";
exports.CENTRAL_FILE_HEADER = "PK\x01\x02";
exports.CENTRAL_DIRECTORY_END = "PK\x05\x06";
exports.ZIP64_CENTRAL_DIRECTORY_LOCATOR = "PK\x06\x07";
exports.ZIP64_CENTRAL_DIRECTORY_END = "PK\x06\x06";
exports.DATA_DESCRIPTOR = "PK\x07\x08";


/***/ }),
/* 214 */
/*!*************************************************!*\
  !*** ./node_modules/pako/lib/zlib/constants.js ***!
  \*************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

module.exports = {

  /* Allowed flush values; see deflate() and inflate() below for details */
  Z_NO_FLUSH:         0,
  Z_PARTIAL_FLUSH:    1,
  Z_SYNC_FLUSH:       2,
  Z_FULL_FLUSH:       3,
  Z_FINISH:           4,
  Z_BLOCK:            5,
  Z_TREES:            6,

  /* Return codes for the compression/decompression functions. Negative values
  * are errors, positive values are used for special but normal events.
  */
  Z_OK:               0,
  Z_STREAM_END:       1,
  Z_NEED_DICT:        2,
  Z_ERRNO:           -1,
  Z_STREAM_ERROR:    -2,
  Z_DATA_ERROR:      -3,
  //Z_MEM_ERROR:     -4,
  Z_BUF_ERROR:       -5,
  //Z_VERSION_ERROR: -6,

  /* compression levels */
  Z_NO_COMPRESSION:         0,
  Z_BEST_SPEED:             1,
  Z_BEST_COMPRESSION:       9,
  Z_DEFAULT_COMPRESSION:   -1,


  Z_FILTERED:               1,
  Z_HUFFMAN_ONLY:           2,
  Z_RLE:                    3,
  Z_FIXED:                  4,
  Z_DEFAULT_STRATEGY:       0,

  /* Possible values of the data_type field (though see inflate()) */
  Z_BINARY:                 0,
  Z_TEXT:                   1,
  //Z_ASCII:                1, // = Z_TEXT (deprecated)
  Z_UNKNOWN:                2,

  /* The deflate compression method */
  Z_DEFLATED:               8
  //Z_NULL:                 null // Use -1 or null inline, depending on var type
};


/***/ }),
/* 215 */
/*!***********************************************!*\
  !*** ./node_modules/pako/lib/zlib/zstream.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

function ZStream() {
  /* next input byte */
  this.input = null; // JS specific, because we have no pointers
  this.next_in = 0;
  /* number of bytes available at input */
  this.avail_in = 0;
  /* total number of input bytes read so far */
  this.total_in = 0;
  /* next output byte should be put there */
  this.output = null; // JS specific, because we have no pointers
  this.next_out = 0;
  /* remaining free space at output */
  this.avail_out = 0;
  /* total number of bytes output so far */
  this.total_out = 0;
  /* last error message, NULL if no error */
  this.msg = ''/*Z_NULL*/;
  /* not visible by applications */
  this.state = null;
  /* best guess about the data type: binary or text */
  this.data_type = 2/*Z_UNKNOWN*/;
  /* adler32 value of the uncompressed data */
  this.adler = 0;
}

module.exports = ZStream;


/***/ }),
/* 216 */
/*!************************************************!*\
  !*** ./node_modules/pako/lib/utils/strings.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
// String encode/decode helpers



var utils = __webpack_require__(/*! ./common */ 112);


// Quick check if we can use fast array to bin string conversion
//
// - apply(Array) can fail on Android 2.2
// - apply(Uint8Array) can fail on iOS 5.1 Safari
//
var STR_APPLY_OK = true;
var STR_APPLY_UIA_OK = true;

try { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; }
try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }


// Table with utf8 lengths (calculated by first byte of sequence)
// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
// because max possible codepoint is 0x10ffff
var _utf8len = new utils.Buf8(256);
for (var q = 0; q < 256; q++) {
  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
}
_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start


// convert string to array (typed, when possible)
exports.string2buf = function (str) {
  var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;

  // count binary size
  for (m_pos = 0; m_pos < str_len; m_pos++) {
    c = str.charCodeAt(m_pos);
    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
      c2 = str.charCodeAt(m_pos + 1);
      if ((c2 & 0xfc00) === 0xdc00) {
        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
        m_pos++;
      }
    }
    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
  }

  // allocate buffer
  buf = new utils.Buf8(buf_len);

  // convert
  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {
    c = str.charCodeAt(m_pos);
    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
      c2 = str.charCodeAt(m_pos + 1);
      if ((c2 & 0xfc00) === 0xdc00) {
        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
        m_pos++;
      }
    }
    if (c < 0x80) {
      /* one byte */
      buf[i++] = c;
    } else if (c < 0x800) {
      /* two bytes */
      buf[i++] = 0xC0 | (c >>> 6);
      buf[i++] = 0x80 | (c & 0x3f);
    } else if (c < 0x10000) {
      /* three bytes */
      buf[i++] = 0xE0 | (c >>> 12);
      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
      buf[i++] = 0x80 | (c & 0x3f);
    } else {
      /* four bytes */
      buf[i++] = 0xf0 | (c >>> 18);
      buf[i++] = 0x80 | (c >>> 12 & 0x3f);
      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
      buf[i++] = 0x80 | (c & 0x3f);
    }
  }

  return buf;
};

// Helper (used in 2 places)
function buf2binstring(buf, len) {
  // use fallback for big arrays to avoid stack overflow
  if (len < 65537) {
    if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {
      return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));
    }
  }

  var result = '';
  for (var i = 0; i < len; i++) {
    result += String.fromCharCode(buf[i]);
  }
  return result;
}


// Convert byte array to binary string
exports.buf2binstring = function (buf) {
  return buf2binstring(buf, buf.length);
};


// Convert binary string (typed, when possible)
exports.binstring2buf = function (str) {
  var buf = new utils.Buf8(str.length);
  for (var i = 0, len = buf.length; i < len; i++) {
    buf[i] = str.charCodeAt(i);
  }
  return buf;
};


// convert array to string
exports.buf2string = function (buf, max) {
  var i, out, c, c_len;
  var len = max || buf.length;

  // Reserve max possible length (2 words per char)
  // NB: by unknown reasons, Array is significantly faster for
  //     String.fromCharCode.apply than Uint16Array.
  var utf16buf = new Array(len * 2);

  for (out = 0, i = 0; i < len;) {
    c = buf[i++];
    // quick process ascii
    if (c < 0x80) { utf16buf[out++] = c; continue; }

    c_len = _utf8len[c];
    // skip 5 & 6 byte codes
    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }

    // apply mask on first byte
    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
    // join the rest
    while (c_len > 1 && i < len) {
      c = (c << 6) | (buf[i++] & 0x3f);
      c_len--;
    }

    // terminated by end of string?
    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }

    if (c < 0x10000) {
      utf16buf[out++] = c;
    } else {
      c -= 0x10000;
      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
      utf16buf[out++] = 0xdc00 | (c & 0x3ff);
    }
  }

  return buf2binstring(utf16buf, out);
};


// Calculate max possible position in utf8 buffer,
// that will not break sequence. If that's not possible
// - (very small limits) return max size as is.
//
// buf[] - utf8 bytes array
// max   - length limit (mandatory);
exports.utf8border = function (buf, max) {
  var pos;

  max = max || buf.length;
  if (max > buf.length) { max = buf.length; }

  // go back from last position, until start of sequence found
  pos = max - 1;
  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }

  // Very small and broken sequence,
  // return max, because we should return something anyway.
  if (pos < 0) { return max; }

  // If we came to start of buffer - that means buffer is too small,
  // return max too.
  if (pos === 0) { return max; }

  return (pos + _utf8len[buf[pos]] > max) ? pos : max;
};


/***/ }),
/* 217 */
/*!*********************************************!*\
  !*** ./node_modules/pako/lib/zlib/crc32.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// Note: we can't get significant speed boost here.
// So write code to minimize size - no pregenerated tables
// and array tools dependencies.

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

// Use ordinary array, since untyped makes no boost here
function makeTable() {
  var c, table = [];

  for (var n = 0; n < 256; n++) {
    c = n;
    for (var k = 0; k < 8; k++) {
      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
    }
    table[n] = c;
  }

  return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
  var t = crcTable,
      end = pos + len;

  crc ^= -1;

  for (var i = pos; i < end; i++) {
    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
  }

  return (crc ^ (-1)); // >>> 0;
}


module.exports = crc32;


/***/ }),
/* 218 */
/*!***********************************************!*\
  !*** ./node_modules/pako/lib/zlib/adler32.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It isn't worth it to make additional optimizations as in original.
// Small size is preferable.

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

function adler32(adler, buf, len, pos) {
  var s1 = (adler & 0xffff) |0,
      s2 = ((adler >>> 16) & 0xffff) |0,
      n = 0;

  while (len !== 0) {
    // Set limit ~ twice less than 5552, to keep
    // s2 in 31-bits, because we force signed ints.
    // in other case %= will fail.
    n = len > 2000 ? 2000 : len;
    len -= n;

    do {
      s1 = (s1 + buf[pos++]) |0;
      s2 = (s2 + s1) |0;
    } while (--n);

    s1 %= 65521;
    s2 %= 65521;
  }

  return (s1 | (s2 << 16)) |0;
}


module.exports = adler32;


/***/ }),
/* 219 */
/*!************************************************!*\
  !*** ./node_modules/jszip/lib/compressions.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var GenericWorker = __webpack_require__(/*! ./stream/GenericWorker */ 90);

exports.STORE = {
    magic: "\x00\x00",
    compressWorker : function (compressionOptions) {
        return new GenericWorker("STORE compression");
    },
    uncompressWorker : function () {
        return new GenericWorker("STORE decompression");
    }
};
exports.DEFLATE = __webpack_require__(/*! ./flate */ 403);


/***/ }),
/* 220 */
/*!*****************************************************!*\
  !*** ./node_modules/jszip/lib/stream/Crc32Probe.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var GenericWorker = __webpack_require__(/*! ./GenericWorker */ 90);
var crc32 = __webpack_require__(/*! ../crc32 */ 184);
var utils = __webpack_require__(/*! ../utils */ 60);

/**
 * A worker which calculate the crc32 of the data flowing through.
 * @constructor
 */
function Crc32Probe() {
    GenericWorker.call(this, "Crc32Probe");
    this.withStreamInfo("crc32", 0);
}
utils.inherits(Crc32Probe, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
Crc32Probe.prototype.processChunk = function (chunk) {
    this.streamInfo.crc32 = crc32(chunk.data, this.streamInfo.crc32 || 0);
    this.push(chunk);
};
module.exports = Crc32Probe;


/***/ }),
/* 221 */
/*!**********************************************************!*\
  !*** ./node_modules/jszip/lib/stream/DataLengthProbe.js ***!
  \**********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ../utils */ 60);
var GenericWorker = __webpack_require__(/*! ./GenericWorker */ 90);

/**
 * A worker which calculate the total length of the data flowing through.
 * @constructor
 * @param {String} propName the name used to expose the length
 */
function DataLengthProbe(propName) {
    GenericWorker.call(this, "DataLengthProbe for " + propName);
    this.propName = propName;
    this.withStreamInfo(propName, 0);
}
utils.inherits(DataLengthProbe, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
DataLengthProbe.prototype.processChunk = function (chunk) {
    if(chunk) {
        var length = this.streamInfo[this.propName] || 0;
        this.streamInfo[this.propName] = length + chunk.data.length;
    }
    GenericWorker.prototype.processChunk.call(this, chunk);
};
module.exports = DataLengthProbe;



/***/ }),
/* 222 */
/*!*****************************************************!*\
  !*** ./node_modules/jszip/lib/stream/DataWorker.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ../utils */ 60);
var GenericWorker = __webpack_require__(/*! ./GenericWorker */ 90);

// the size of the generated chunks
// TODO expose this as a public variable
var DEFAULT_BLOCK_SIZE = 16 * 1024;

/**
 * A worker that reads a content and emits chunks.
 * @constructor
 * @param {Promise} dataP the promise of the data to split
 */
function DataWorker(dataP) {
    GenericWorker.call(this, "DataWorker");
    var self = this;
    this.dataIsReady = false;
    this.index = 0;
    this.max = 0;
    this.data = null;
    this.type = "";

    this._tickScheduled = false;

    dataP.then(function (data) {
        self.dataIsReady = true;
        self.data = data;
        self.max = data && data.length || 0;
        self.type = utils.getTypeOf(data);
        if(!self.isPaused) {
            self._tickAndRepeat();
        }
    }, function (e) {
        self.error(e);
    });
}

utils.inherits(DataWorker, GenericWorker);

/**
 * @see GenericWorker.cleanUp
 */
DataWorker.prototype.cleanUp = function () {
    GenericWorker.prototype.cleanUp.call(this);
    this.data = null;
};

/**
 * @see GenericWorker.resume
 */
DataWorker.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if (!this._tickScheduled && this.dataIsReady) {
        this._tickScheduled = true;
        utils.delay(this._tickAndRepeat, [], this);
    }
    return true;
};

/**
 * Trigger a tick a schedule an other call to this function.
 */
DataWorker.prototype._tickAndRepeat = function() {
    this._tickScheduled = false;
    if(this.isPaused || this.isFinished) {
        return;
    }
    this._tick();
    if(!this.isFinished) {
        utils.delay(this._tickAndRepeat, [], this);
        this._tickScheduled = true;
    }
};

/**
 * Read and push a chunk.
 */
DataWorker.prototype._tick = function() {

    if(this.isPaused || this.isFinished) {
        return false;
    }

    var size = DEFAULT_BLOCK_SIZE;
    var data = null, nextIndex = Math.min(this.max, this.index + size);
    if (this.index >= this.max) {
        // EOF
        return this.end();
    } else {
        switch(this.type) {
            case "string":
                data = this.data.substring(this.index, nextIndex);
            break;
            case "uint8array":
                data = this.data.subarray(this.index, nextIndex);
            break;
            case "array":
            case "nodebuffer":
                data = this.data.slice(this.index, nextIndex);
            break;
        }
        this.index = nextIndex;
        return this.push({
            data : data,
            meta : {
                percent : this.max ? this.index / this.max * 100 : 0
            }
        });
    }
};

module.exports = DataWorker;


/***/ }),
/* 223 */
/*!********************************************!*\
  !*** ./node_modules/jszip/lib/defaults.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

exports.base64 = false;
exports.binary = false;
exports.dir = false;
exports.createFolders = true;
exports.date = null;
exports.compression = null;
exports.compressionOptions = null;
exports.comment = null;
exports.unixPermissions = null;
exports.dosPermissions = null;


/***/ }),
/* 224 */
/*!*******************************************************!*\
  !*** ./node_modules/jszip/lib/stream/StreamHelper.js ***!
  \*******************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(Buffer) {

var utils = __webpack_require__(/*! ../utils */ 60);
var ConvertWorker = __webpack_require__(/*! ./ConvertWorker */ 407);
var GenericWorker = __webpack_require__(/*! ./GenericWorker */ 90);
var base64 = __webpack_require__(/*! ../base64 */ 229);
var support = __webpack_require__(/*! ../support */ 113);
var external = __webpack_require__(/*! ../external */ 143);

var NodejsStreamOutputAdapter = null;
if (support.nodestream) {
    try {
        NodejsStreamOutputAdapter = __webpack_require__(/*! ../nodejs/NodejsStreamOutputAdapter */ 406);
    } catch(e) {}
}

/**
 * Apply the final transformation of the data. If the user wants a Blob for
 * example, it's easier to work with an U8intArray and finally do the
 * ArrayBuffer/Blob conversion.
 * @param {String} type the name of the final type
 * @param {String|Uint8Array|Buffer} content the content to transform
 * @param {String} mimeType the mime type of the content, if applicable.
 * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the content in the right format.
 */
function transformZipOutput(type, content, mimeType) {
    switch(type) {
        case "blob" :
            return utils.newBlob(utils.transformTo("arraybuffer", content), mimeType);
        case "base64" :
            return base64.encode(content);
        default :
            return utils.transformTo(type, content);
    }
}

/**
 * Concatenate an array of data of the given type.
 * @param {String} type the type of the data in the given array.
 * @param {Array} dataArray the array containing the data chunks to concatenate
 * @return {String|Uint8Array|Buffer} the concatenated data
 * @throws Error if the asked type is unsupported
 */
function concat (type, dataArray) {
    var i, index = 0, res = null, totalLength = 0;
    for(i = 0; i < dataArray.length; i++) {
        totalLength += dataArray[i].length;
    }
    switch(type) {
        case "string":
            return dataArray.join("");
          case "array":
            return Array.prototype.concat.apply([], dataArray);
        case "uint8array":
            res = new Uint8Array(totalLength);
            for(i = 0; i < dataArray.length; i++) {
                res.set(dataArray[i], index);
                index += dataArray[i].length;
            }
            return res;
        case "nodebuffer":
            return Buffer.concat(dataArray);
        default:
            throw new Error("concat : unsupported type '"  + type + "'");
    }
}

/**
 * Listen a StreamHelper, accumulate its content and concatenate it into a
 * complete block.
 * @param {StreamHelper} helper the helper to use.
 * @param {Function} updateCallback a callback called on each update. Called
 * with one arg :
 * - the metadata linked to the update received.
 * @return Promise the promise for the accumulation.
 */
function accumulate(helper, updateCallback) {
    return new external.Promise(function (resolve, reject){
        var dataArray = [];
        var chunkType = helper._internalType,
            resultType = helper._outputType,
            mimeType = helper._mimeType;
        helper
        .on('data', function (data, meta) {
            dataArray.push(data);
            if(updateCallback) {
                updateCallback(meta);
            }
        })
        .on('error', function(err) {
            dataArray = [];
            reject(err);
        })
        .on('end', function (){
            try {
                var result = transformZipOutput(resultType, concat(chunkType, dataArray), mimeType);
                resolve(result);
            } catch (e) {
                reject(e);
            }
            dataArray = [];
        })
        .resume();
    });
}

/**
 * An helper to easily use workers outside of JSZip.
 * @constructor
 * @param {Worker} worker the worker to wrap
 * @param {String} outputType the type of data expected by the use
 * @param {String} mimeType the mime type of the content, if applicable.
 */
function StreamHelper(worker, outputType, mimeType) {
    var internalType = outputType;
    switch(outputType) {
        case "blob":
        case "arraybuffer":
            internalType = "uint8array";
        break;
        case "base64":
            internalType = "string";
        break;
    }

    try {
        // the type used internally
        this._internalType = internalType;
        // the type used to output results
        this._outputType = outputType;
        // the mime type
        this._mimeType = mimeType;
        utils.checkSupport(internalType);
        this._worker = worker.pipe(new ConvertWorker(internalType));
        // the last workers can be rewired without issues but we need to
        // prevent any updates on previous workers.
        worker.lock();
    } catch(e) {
        this._worker = new GenericWorker("error");
        this._worker.error(e);
    }
}

StreamHelper.prototype = {
    /**
     * Listen a StreamHelper, accumulate its content and concatenate it into a
     * complete block.
     * @param {Function} updateCb the update callback.
     * @return Promise the promise for the accumulation.
     */
    accumulate : function (updateCb) {
        return accumulate(this, updateCb);
    },
    /**
     * Add a listener on an event triggered on a stream.
     * @param {String} evt the name of the event
     * @param {Function} fn the listener
     * @return {StreamHelper} the current helper.
     */
    on : function (evt, fn) {
        var self = this;

        if(evt === "data") {
            this._worker.on(evt, function (chunk) {
                fn.call(self, chunk.data, chunk.meta);
            });
        } else {
            this._worker.on(evt, function () {
                utils.delay(fn, arguments, self);
            });
        }
        return this;
    },
    /**
     * Resume the flow of chunks.
     * @return {StreamHelper} the current helper.
     */
    resume : function () {
        utils.delay(this._worker.resume, [], this._worker);
        return this;
    },
    /**
     * Pause the flow of chunks.
     * @return {StreamHelper} the current helper.
     */
    pause : function () {
        this._worker.pause();
        return this;
    },
    /**
     * Return a nodejs stream for this helper.
     * @param {Function} updateCb the update callback.
     * @return {NodejsStreamOutputAdapter} the nodejs stream.
     */
    toNodejsStream : function (updateCb) {
        utils.checkSupport("nodestream");
        if (this._outputType !== "nodebuffer") {
            // an object stream containing blob/arraybuffer/uint8array/string
            // is strange and I don't know if it would be useful.
            // I you find this comment and have a good usecase, please open a
            // bug report !
            throw new Error(this._outputType + " is not supported by this method");
        }

        return new NodejsStreamOutputAdapter(this, {
            objectMode : this._outputType !== "nodebuffer"
        }, updateCb);
    }
};


module.exports = StreamHelper;

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../buffer/index.js */ 145).Buffer))

/***/ }),
/* 225 */
/*!********************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_dom-create.js ***!
  \********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var isObject = __webpack_require__(/*! ./_is-object */ 187)
  , document = __webpack_require__(/*! ./_global */ 154).document
  // in old IE typeof document.createElement is 'object'
  , is = isObject(document) && isObject(document.createElement);
module.exports = function(it){
  return is ? document.createElement(it) : {};
};

/***/ }),
/* 226 */
/*!***************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_fails.js ***!
  \***************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function(exec){
  try {
    return !!exec();
  } catch(e){
    return true;
  }
};

/***/ }),
/* 227 */
/*!*************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_ctx.js ***!
  \*************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// optional / simple context binding
var aFunction = __webpack_require__(/*! ./_a-function */ 420);
module.exports = function(fn, that, length){
  aFunction(fn);
  if(that === undefined)return fn;
  switch(length){
    case 1: return function(a){
      return fn.call(that, a);
    };
    case 2: return function(a, b){
      return fn.call(that, a, b);
    };
    case 3: return function(a, b, c){
      return fn.call(that, a, b, c);
    };
  }
  return function(/* ...args */){
    return fn.apply(that, arguments);
  };
};

/***/ }),
/* 228 */
/*!**************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_core.js ***!
  \**************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

var core = module.exports = {version: '2.3.0'};
if(typeof __e == 'number')__e = core; // eslint-disable-line no-undef

/***/ }),
/* 229 */
/*!******************************************!*\
  !*** ./node_modules/jszip/lib/base64.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var utils = __webpack_require__(/*! ./utils */ 60);
var support = __webpack_require__(/*! ./support */ 113);
// private property
var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";


// public method for encoding
exports.encode = function(input) {
    var output = [];
    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    var i = 0, len = input.length, remainingBytes = len;

    var isArray = utils.getTypeOf(input) !== "string";
    while (i < input.length) {
        remainingBytes = len - i;

        if (!isArray) {
            chr1 = input.charCodeAt(i++);
            chr2 = i < len ? input.charCodeAt(i++) : 0;
            chr3 = i < len ? input.charCodeAt(i++) : 0;
        } else {
            chr1 = input[i++];
            chr2 = i < len ? input[i++] : 0;
            chr3 = i < len ? input[i++] : 0;
        }

        enc1 = chr1 >> 2;
        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
        enc3 = remainingBytes > 1 ? (((chr2 & 15) << 2) | (chr3 >> 6)) : 64;
        enc4 = remainingBytes > 2 ? (chr3 & 63) : 64;

        output.push(_keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4));

    }

    return output.join("");
};

// public method for decoding
exports.decode = function(input) {
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0, resultIndex = 0;

    var dataUrlPrefix = "data:";

    if (input.substr(0, dataUrlPrefix.length) === dataUrlPrefix) {
        // This is a common error: people give a data url
        // (data:image/png;base64,iVBOR...) with a {base64: true} and
        // wonders why things don't work.
        // We can detect that the string input looks like a data url but we
        // *can't* be sure it is one: removing everything up to the comma would
        // be too dangerous.
        throw new Error("Invalid base64 input, it looks like a data url.");
    }

    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    var totalLength = input.length * 3 / 4;
    if(input.charAt(input.length - 1) === _keyStr.charAt(64)) {
        totalLength--;
    }
    if(input.charAt(input.length - 2) === _keyStr.charAt(64)) {
        totalLength--;
    }
    if (totalLength % 1 !== 0) {
        // totalLength is not an integer, the length does not match a valid
        // base64 content. That can happen if:
        // - the input is not a base64 content
        // - the input is *almost* a base64 content, with a extra chars at the
        //   beginning or at the end
        // - the input uses a base64 variant (base64url for example)
        throw new Error("Invalid base64 input, bad content length.");
    }
    var output;
    if (support.uint8array) {
        output = new Uint8Array(totalLength|0);
    } else {
        output = new Array(totalLength|0);
    }

    while (i < input.length) {

        enc1 = _keyStr.indexOf(input.charAt(i++));
        enc2 = _keyStr.indexOf(input.charAt(i++));
        enc3 = _keyStr.indexOf(input.charAt(i++));
        enc4 = _keyStr.indexOf(input.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        output[resultIndex++] = chr1;

        if (enc3 !== 64) {
            output[resultIndex++] = chr2;
        }
        if (enc4 !== 64) {
            output[resultIndex++] = chr3;
        }

    }

    return output;
};


/***/ }),
/* 230 */
/*!***************************************************************!*\
  !*** ./node_modules/readable-stream/lib/_stream_transform.js ***!
  \***************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.



module.exports = Transform;

var Duplex = __webpack_require__(/*! ./_stream_duplex */ 123);

/*<replacement>*/
var util = __webpack_require__(/*! core-util-is */ 144);
util.inherits = __webpack_require__(/*! inherits */ 124);
/*</replacement>*/

util.inherits(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) {
    return this.emit('error', new Error('write callback called multiple times'));
  }

  ts.writechunk = null;
  ts.writecb = null;

  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);

  cb(er);

  var rs = this._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  };

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;

    if (typeof options.flush === 'function') this._flush = options.flush;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function') {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
  throw new Error('_transform() is not implemented');
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  var _this2 = this;

  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
    _this2.emit('close');
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');

  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}

/***/ }),
/* 231 */
/*!***********************************************************!*\
  !*** ./node_modules/string_decoder/lib/string_decoder.js ***!
  \***********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var Buffer = __webpack_require__(/*! safe-buffer */ 156).Buffer;

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + encoding;
  switch (encoding && encoding.toLowerCase()) {
    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
      return true;
    default:
      return false;
  }
};

function _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return -1;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd'.repeat(p);
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd'.repeat(p + 1);
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd'.repeat(p + 2);
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character for each buffered byte of a (partial)
// character needs to be added to the output.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed);
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}

/***/ }),
/* 232 */
/*!**********************************************************************!*\
  !*** ./node_modules/readable-stream/lib/internal/streams/destroy.js ***!
  \**********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


/*<replacement>*/

var processNextTick = __webpack_require__(/*! process-nextick-args */ 157).nextTick;
/*</replacement>*/

// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
      processNextTick(emitErrorNT, this, err);
    }
    return this;
  }

  // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks

  if (this._readableState) {
    this._readableState.destroyed = true;
  }

  // if this is a duplex stream mark the writable part as destroyed as well
  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      processNextTick(emitErrorNT, _this, err);
      if (_this._writableState) {
        _this._writableState.errorEmitted = true;
      }
    } else if (cb) {
      cb(err);
    }
  });

  return this;
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy
};

/***/ }),
/* 233 */
/*!*****************************************************************************!*\
  !*** ./node_modules/readable-stream/lib/internal/streams/stream-browser.js ***!
  \*****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! events */ 133).EventEmitter;


/***/ }),
/* 234 */
/*!**************************************************************!*\
  !*** ./node_modules/readable-stream/lib/_stream_readable.js ***!
  \**************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(global, process) {// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.



/*<replacement>*/

var processNextTick = __webpack_require__(/*! process-nextick-args */ 157).nextTick;
/*</replacement>*/

module.exports = Readable;

/*<replacement>*/
var isArray = __webpack_require__(/*! isarray */ 236);
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = __webpack_require__(/*! events */ 133).EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream = __webpack_require__(/*! ./internal/streams/stream */ 233);
/*</replacement>*/

/*<replacement>*/

var Buffer = __webpack_require__(/*! safe-buffer */ 156).Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

/*<replacement>*/
var util = __webpack_require__(/*! core-util-is */ 144);
util.inherits = __webpack_require__(/*! inherits */ 124);
/*</replacement>*/

/*<replacement>*/
var debugUtil = __webpack_require__(/*! util */ 434);
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = __webpack_require__(/*! ./internal/streams/BufferList */ 433);
var destroyImpl = __webpack_require__(/*! ./internal/streams/destroy */ 232);
var StringDecoder;

util.inherits(Readable, Stream);

var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);

  // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.
  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream) {
  Duplex = Duplex || __webpack_require__(/*! ./_stream_duplex */ 123);

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var readableHwm = options.readableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;

  // has it been destroyed
  this.destroyed = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder) StringDecoder = __webpack_require__(/*! string_decoder/ */ 231).StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || __webpack_require__(/*! ./_stream_duplex */ 123);

  if (!(this instanceof Readable)) return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined) {
      return false;
    }
    return this._readableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
  }
});

Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
  this.push(null);
  cb(err);
};

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }
      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  var state = stream._readableState;
  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        stream.emit('error', new Error('stream.push() after EOF'));
      } else {
        state.reading = false;
        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
    }
  }

  return needMoreData(state);
}

function addChunk(stream, state, chunk, addToFront) {
  if (state.flowing && state.length === 0 && !state.sync) {
    stream.emit('data', chunk);
    stream.read(0);
  } else {
    // update the buffer info.
    state.length += state.objectMode ? 1 : chunk.length;
    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);

    if (state.needReadable) emitReadable(stream);
  }
  maybeReadMore(stream, state);
}

function chunkInvalid(state, chunk) {
  var er;
  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}

// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
};

// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = __webpack_require__(/*! string_decoder/ */ 231).StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true;

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}

// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    processNextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;else len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
  this.emit('error', new Error('_read() is not implemented'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;

  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');
    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = { hasUnpiped: false };

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0) return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;

    if (!dest) dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, unpipeInfo);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this, unpipeInfo);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        processNextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    processNextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;

  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });

  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function (method) {
        return function () {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  }

  // proxy certain important events.
  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  }

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  this._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
  var ret = Buffer.allocUnsafe(n);
  var p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    processNextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function forEach(xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../webpack/buildin/global.js */ 86), __webpack_require__(/*! ./../../process/browser.js */ 146)))

/***/ }),
/* 235 */
/*!***********************************************************!*\
  !*** ./node_modules/jszip/lib/readable-stream-browser.js ***!
  \***********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/*
 * This file is used by module bundlers (browserify/webpack/etc) when
 * including a stream implementation. We use "readable-stream" to get a
 * consistent behavior between nodejs versions but bundlers often have a shim
 * for "stream". Using this shim greatly improve the compatibility and greatly
 * reduce the final size of the bundle (only one stream implementation, not
 * two).
 */
module.exports = __webpack_require__(/*! stream */ 435);


/***/ }),
/* 236 */
/*!***************************************!*\
  !*** ./node_modules/isarray/index.js ***!
  \***************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};


/***/ }),
/* 237 */
/*!***********************************!*\
  !*** ./node_modules/util/util.js ***!
  \***********************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, process) {// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = __webpack_require__(/*! ./support/isBuffer */ 442);

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = __webpack_require__(/*! inherits */ 124);

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86), __webpack_require__(/*! ./../process/browser.js */ 146)))

/***/ }),
/* 238 */
/*!******************************************!*\
  !*** ./node_modules/jshint/src/state.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var NameStack = __webpack_require__(/*! ./name-stack.js */ 452);

var state = {
  syntax: {},

  /**
   * Determine if the code currently being linted is strict mode code.
   *
   * @returns {boolean}
   */
  isStrict: function() {
    return this.directive["use strict"] || this.inClassBody ||
      this.option.module || this.option.strict === "implied";
  },

  /**
   * Determine if the current state warrants a warning for statements outside
   * of strict mode code.
   *
   * While emitting warnings based on function scope would be more intuitive
   * (and less noisy), JSHint observes statement-based semantics in order to
   * preserve legacy behavior.
   *
   * This method does not take the state of the parser into account, making no
   * distinction between global code and function code. Because the "missing
   * 'use strict'" warning is *also* reported at function boundaries, this
   * function interprets `strict` option values `true` and `undefined` as
   * equivalent.
   */
  stmtMissingStrict: function() {
    if (this.option.strict === "global") {
      return true;
    }

    if (this.option.strict === false) {
      return false;
    }

    if (this.option.globalstrict) {
      return true;
    }

    return false;
  },

  allowsGlobalUsd: function() {
    return this.option.strict === "global" || this.option.globalstrict ||
      this.option.module || this.impliedClosure();
  },

  /**
   * Determine if the current configuration describes an environment that is
   * wrapped in an immediately-invoked function expression prior to evaluation.
   *
   * @returns {boolean}
   */
  impliedClosure: function() {
    return this.option.node || this.option.phantom || this.option.browserify;
  },

  // Assumption: chronologically ES3 < ES5 < ES6 < Moz

  inMoz: function() {
    return this.option.moz;
  },

  /**
   * Determine if constructs introduced in ECMAScript 8 should be accepted.
   *
   * @returns {boolean}
   */
  inES9: function() {
    return this.esVersion >= 9;
  },

  /**
   * Determine if constructs introduced in ECMAScript 8 should be accepted.
   *
   * @returns {boolean}
   */
  inES8: function() {
    return this.esVersion >= 8;
  },

  /**
   * Determine if constructs introduced in ECMAScript 7 should be accepted.
   *
   * @returns {boolean}
   */
  inES7: function() {
    return this.esVersion >= 7;
  },

  /**
   * Determine if constructs introduced in ECMAScript 6 should be accepted.
   *
   * @param {boolean} strict - When `true`, do not interpret the `moz` option
   *                           as ECMAScript 6
   *
   * @returns {boolean}
   */
  inES6: function(strict) {
    if (!strict && this.option.moz) {
      return true;
    }

    return this.esVersion >= 6;
  },

  /**
   * Determine if constructs introduced in ECMAScript 5 should be accepted.
   *
   * @returns {boolean}
   */
  inES5: function() {
    return !this.esVersion || this.esVersion >= 5 || this.option.moz;
  },

  /**
   * Determine the current version of the input language by inspecting the
   * value of all ECMAScript-version-related options. This logic is necessary
   * to ensure compatibility with deprecated options `es3`, `es5`, and
   * `esnext`, and it may be drastically simplified when those options are
   * removed.
   *
   * @returns {string|null} - the name of any incompatible option detected,
   *                          `null` otherwise
   */
  inferEsVersion: function() {
    var badOpt = null;

    if (this.option.esversion) {
      if (this.option.es3) {
        badOpt = "es3";
      } else if (this.option.es5) {
        badOpt = "es5";
      } else if (this.option.esnext) {
        badOpt = "esnext";
      }

      if (badOpt) {
        return badOpt;
      }

      if (this.option.esversion === 2015) {
        this.esVersion = 6;
      } else {
        this.esVersion = this.option.esversion;
      }
    } else if (this.option.es3) {
      this.esVersion = 3;
    } else if (this.option.esnext) {
      this.esVersion = 6;
    }

    return null;
  },

  reset: function() {
    this.tokens = {
      prev: null,
      next: null,
      curr: null
    };

    this.option = { unstable: {} };
    this.esVersion = 5;
    this.funct = null;
    this.ignored = {};
    this.directive = Object.create(null);
    this.jsonMode = false;
    this.lines = [];
    this.tab = "";
    this.cache = {}; // Node.JS doesn't have Map. Sniff.
    this.ignoredLines = {};
    this.forinifcheckneeded = false;
    this.nameStack = new NameStack();
    this.inClassBody = false;
  }
};

exports.state = state;


/***/ }),
/* 239 */
/*!****************************************!*\
  !*** ./node_modules/jshint/src/reg.js ***!
  \****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/*
 * Regular expressions. Some of these are stupidly long.
 */

/*jshint maxlen:1000 */



// Unsafe comment or string (ax)
exports.unsafeString =
  /@cc|<\/?|script|\]\s*\]|<\s*!|&lt/i;

// Characters in strings that need escaping (nx and nxg)
exports.needEsc =
  /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/;

exports.needEscGlobal =
  /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;

// Star slash (lx)
exports.starSlash = /\*\//;

// Identifier (ix)
exports.identifier = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/;

// JavaScript URL (jx)
exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;

// Catches /* falls through */ comments (ft)
exports.fallsThrough = /^\s*falls?\sthrough\s*$/;

// very conservative rule (eg: only one space between the start of the comment and the first character)
// to relax the maxlen option
exports.maxlenException = /^(?:(?:\/\/|\/\*|\*) ?)?[^ ]+$/;

// Node.js releases prior to version 8 include a version of the V8 engine which
// incorrectly interprets the character class escape `\s`. The following
// regular expression may be replaced with `/\s/` when JSHint removes support
// for Node.js versions prior to 8.
// Source:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
exports.whitespace = /[ \f\n\r\t\v\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]/;

exports.nonzeroDigit = /^[1-9]$/;

exports.decimalDigit = /^[0-9]$/;

exports.regexpSyntaxChars = /[\^$\\.*+?()[\]{}|]/;

exports.regexpQuantifiers = /[*+?{]/;

exports.regexpCharClasses = /[dDsSwW]/;

// Identifies the "dot" atom in regular expressions
exports.regexpDot = /(^|[^\\])(\\\\)*\./;


/***/ }),
/* 240 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/addon/fold/foldcode.js ***!
  \********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  "use strict";

  function doFold(cm, pos, options, force) {
    if (options && options.call) {
      var finder = options;
      options = null;
    } else {
      var finder = getOption(cm, options, "rangeFinder");
    }
    if (typeof pos == "number") pos = CodeMirror.Pos(pos, 0);
    var minSize = getOption(cm, options, "minFoldSize");

    function getRange(allowFolded) {
      var range = finder(cm, pos);
      if (!range || range.to.line - range.from.line < minSize) return null;
      var marks = cm.findMarksAt(range.from);
      for (var i = 0; i < marks.length; ++i) {
        if (marks[i].__isFold && force !== "fold") {
          if (!allowFolded) return null;
          range.cleared = true;
          marks[i].clear();
        }
      }
      return range;
    }

    var range = getRange(true);
    if (getOption(cm, options, "scanUp")) while (!range && pos.line > cm.firstLine()) {
      pos = CodeMirror.Pos(pos.line - 1, 0);
      range = getRange(false);
    }
    if (!range || range.cleared || force === "unfold") return;

    var myWidget = makeWidget(cm, options);
    CodeMirror.on(myWidget, "mousedown", function(e) {
      myRange.clear();
      CodeMirror.e_preventDefault(e);
    });
    var myRange = cm.markText(range.from, range.to, {
      replacedWith: myWidget,
      clearOnEnter: getOption(cm, options, "clearOnEnter"),
      __isFold: true
    });
    myRange.on("clear", function(from, to) {
      CodeMirror.signal(cm, "unfold", cm, from, to);
    });
    CodeMirror.signal(cm, "fold", cm, range.from, range.to);
  }

  function makeWidget(cm, options) {
    var widget = getOption(cm, options, "widget");
    if (typeof widget == "string") {
      var text = document.createTextNode(widget);
      widget = document.createElement("span");
      widget.appendChild(text);
      widget.className = "CodeMirror-foldmarker";
    } else if (widget) {
      widget = widget.cloneNode(true)
    }
    return widget;
  }

  // Clumsy backwards-compatible interface
  CodeMirror.newFoldFunction = function(rangeFinder, widget) {
    return function(cm, pos) { doFold(cm, pos, {rangeFinder: rangeFinder, widget: widget}); };
  };

  // New-style interface
  CodeMirror.defineExtension("foldCode", function(pos, options, force) {
    doFold(this, pos, options, force);
  });

  CodeMirror.defineExtension("isFolded", function(pos) {
    var marks = this.findMarksAt(pos);
    for (var i = 0; i < marks.length; ++i)
      if (marks[i].__isFold) return true;
  });

  CodeMirror.commands.toggleFold = function(cm) {
    cm.foldCode(cm.getCursor());
  };
  CodeMirror.commands.fold = function(cm) {
    cm.foldCode(cm.getCursor(), null, "fold");
  };
  CodeMirror.commands.unfold = function(cm) {
    cm.foldCode(cm.getCursor(), null, "unfold");
  };
  CodeMirror.commands.foldAll = function(cm) {
    cm.operation(function() {
      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
        cm.foldCode(CodeMirror.Pos(i, 0), null, "fold");
    });
  };
  CodeMirror.commands.unfoldAll = function(cm) {
    cm.operation(function() {
      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
        cm.foldCode(CodeMirror.Pos(i, 0), null, "unfold");
    });
  };

  CodeMirror.registerHelper("fold", "combine", function() {
    var funcs = Array.prototype.slice.call(arguments, 0);
    return function(cm, start) {
      for (var i = 0; i < funcs.length; ++i) {
        var found = funcs[i](cm, start);
        if (found) return found;
      }
    };
  });

  CodeMirror.registerHelper("fold", "auto", function(cm, start) {
    var helpers = cm.getHelpers(start, "fold");
    for (var i = 0; i < helpers.length; i++) {
      var cur = helpers[i](cm, start);
      if (cur) return cur;
    }
  });

  var defaultOptions = {
    rangeFinder: CodeMirror.fold.auto,
    widget: "\u2194",
    minFoldSize: 0,
    scanUp: false,
    clearOnEnter: true
  };

  CodeMirror.defineOption("foldOptions", null);

  function getOption(cm, options, name) {
    if (options && options[name] !== undefined)
      return options[name];
    var editorOptions = cm.options.foldOptions;
    if (editorOptions && editorOptions[name] !== undefined)
      return editorOptions[name];
    return defaultOptions[name];
  }

  CodeMirror.defineExtension("foldOption", function(options, name) {
    return getOption(this, options, name);
  });
});


/***/ }),
/* 241 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/addon/dialog/dialog.js ***!
  \********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Open simple dialogs on top of an editor. Relies on dialog.css.

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  function dialogDiv(cm, template, bottom) {
    var wrap = cm.getWrapperElement();
    var dialog;
    dialog = wrap.appendChild(document.createElement("div"));
    if (bottom)
      dialog.className = "CodeMirror-dialog CodeMirror-dialog-bottom";
    else
      dialog.className = "CodeMirror-dialog CodeMirror-dialog-top";

    if (typeof template == "string") {
      dialog.innerHTML = template;
    } else { // Assuming it's a detached DOM element.
      dialog.appendChild(template);
    }
    CodeMirror.addClass(wrap, 'dialog-opened');
    return dialog;
  }

  function closeNotification(cm, newVal) {
    if (cm.state.currentNotificationClose)
      cm.state.currentNotificationClose();
    cm.state.currentNotificationClose = newVal;
  }

  CodeMirror.defineExtension("openDialog", function(template, callback, options) {
    if (!options) options = {};

    closeNotification(this, null);

    var dialog = dialogDiv(this, template, options.bottom);
    var closed = false, me = this;
    function close(newVal) {
      if (typeof newVal == 'string') {
        inp.value = newVal;
      } else {
        if (closed) return;
        closed = true;
        CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');
        dialog.parentNode.removeChild(dialog);
        me.focus();

        if (options.onClose) options.onClose(dialog);
      }
    }

    var inp = dialog.getElementsByTagName("input")[0], button;
    if (inp) {
      inp.focus();

      if (options.value) {
        inp.value = options.value;
        if (options.selectValueOnOpen !== false) {
          inp.select();
        }
      }

      if (options.onInput)
        CodeMirror.on(inp, "input", function(e) { options.onInput(e, inp.value, close);});
      if (options.onKeyUp)
        CodeMirror.on(inp, "keyup", function(e) {options.onKeyUp(e, inp.value, close);});

      CodeMirror.on(inp, "keydown", function(e) {
        if (options && options.onKeyDown && options.onKeyDown(e, inp.value, close)) { return; }
        if (e.keyCode == 27 || (options.closeOnEnter !== false && e.keyCode == 13)) {
          inp.blur();
          CodeMirror.e_stop(e);
          close();
        }
        if (e.keyCode == 13) callback(inp.value, e);
      });

      if (options.closeOnBlur !== false) CodeMirror.on(inp, "blur", close);
    } else if (button = dialog.getElementsByTagName("button")[0]) {
      CodeMirror.on(button, "click", function() {
        close();
        me.focus();
      });

      if (options.closeOnBlur !== false) CodeMirror.on(button, "blur", close);

      button.focus();
    }
    return close;
  });

  CodeMirror.defineExtension("openConfirm", function(template, callbacks, options) {
    closeNotification(this, null);
    var dialog = dialogDiv(this, template, options && options.bottom);
    var buttons = dialog.getElementsByTagName("button");
    var closed = false, me = this, blurring = 1;
    function close() {
      if (closed) return;
      closed = true;
      CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');
      dialog.parentNode.removeChild(dialog);
      me.focus();
    }
    buttons[0].focus();
    for (var i = 0; i < buttons.length; ++i) {
      var b = buttons[i];
      (function(callback) {
        CodeMirror.on(b, "click", function(e) {
          CodeMirror.e_preventDefault(e);
          close();
          if (callback) callback(me);
        });
      })(callbacks[i]);
      CodeMirror.on(b, "blur", function() {
        --blurring;
        setTimeout(function() { if (blurring <= 0) close(); }, 200);
      });
      CodeMirror.on(b, "focus", function() { ++blurring; });
    }
  });

  /*
   * openNotification
   * Opens a notification, that can be closed with an optional timer
   * (default 5000ms timer) and always closes on click.
   *
   * If a notification is opened while another is opened, it will close the
   * currently opened one and open the new one immediately.
   */
  CodeMirror.defineExtension("openNotification", function(template, options) {
    closeNotification(this, close);
    var dialog = dialogDiv(this, template, options && options.bottom);
    var closed = false, doneTimer;
    var duration = options && typeof options.duration !== "undefined" ? options.duration : 5000;

    function close() {
      if (closed) return;
      closed = true;
      clearTimeout(doneTimer);
      CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');
      dialog.parentNode.removeChild(dialog);
    }

    CodeMirror.on(dialog, 'click', function(e) {
      CodeMirror.e_preventDefault(e);
      close();
    });

    if (duration)
      doneTimer = setTimeout(close, duration);

    return close;
  });
});


/***/ }),
/* 242 */,
/* 243 */
/*!************************************************!*\
  !*** ./node_modules/sprintf-js/src/sprintf.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_RESULT__;/* global window, exports, define */

!function() {
    'use strict'

    var re = {
        not_string: /[^s]/,
        not_bool: /[^t]/,
        not_type: /[^T]/,
        not_primitive: /[^v]/,
        number: /[diefg]/,
        numeric_arg: /[bcdiefguxX]/,
        json: /[j]/,
        not_json: /[^j]/,
        text: /^[^\x25]+/,
        modulo: /^\x25{2}/,
        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijostTuvxX])/,
        key: /^([a-z_][a-z_\d]*)/i,
        key_access: /^\.([a-z_][a-z_\d]*)/i,
        index_access: /^\[(\d+)\]/,
        sign: /^[\+\-]/
    }

    function sprintf(key) {
        // `arguments` is not an array, but should be fine for this call
        return sprintf_format(sprintf_parse(key), arguments)
    }

    function vsprintf(fmt, argv) {
        return sprintf.apply(null, [fmt].concat(argv || []))
    }

    function sprintf_format(parse_tree, argv) {
        var cursor = 1, tree_length = parse_tree.length, arg, output = '', i, k, match, pad, pad_character, pad_length, is_positive, sign
        for (i = 0; i < tree_length; i++) {
            if (typeof parse_tree[i] === 'string') {
                output += parse_tree[i]
            }
            else if (Array.isArray(parse_tree[i])) {
                match = parse_tree[i] // convenience purposes only
                if (match[2]) { // keyword argument
                    arg = argv[cursor]
                    for (k = 0; k < match[2].length; k++) {
                        if (!arg.hasOwnProperty(match[2][k])) {
                            throw new Error(sprintf('[sprintf] property "%s" does not exist', match[2][k]))
                        }
                        arg = arg[match[2][k]]
                    }
                }
                else if (match[1]) { // positional argument (explicit)
                    arg = argv[match[1]]
                }
                else { // positional argument (implicit)
                    arg = argv[cursor++]
                }

                if (re.not_type.test(match[8]) && re.not_primitive.test(match[8]) && arg instanceof Function) {
                    arg = arg()
                }

                if (re.numeric_arg.test(match[8]) && (typeof arg !== 'number' && isNaN(arg))) {
                    throw new TypeError(sprintf('[sprintf] expecting number but found %T', arg))
                }

                if (re.number.test(match[8])) {
                    is_positive = arg >= 0
                }

                switch (match[8]) {
                    case 'b':
                        arg = parseInt(arg, 10).toString(2)
                        break
                    case 'c':
                        arg = String.fromCharCode(parseInt(arg, 10))
                        break
                    case 'd':
                    case 'i':
                        arg = parseInt(arg, 10)
                        break
                    case 'j':
                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
                        break
                    case 'e':
                        arg = match[7] ? parseFloat(arg).toExponential(match[7]) : parseFloat(arg).toExponential()
                        break
                    case 'f':
                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
                        break
                    case 'g':
                        arg = match[7] ? String(Number(arg.toPrecision(match[7]))) : parseFloat(arg)
                        break
                    case 'o':
                        arg = (parseInt(arg, 10) >>> 0).toString(8)
                        break
                    case 's':
                        arg = String(arg)
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 't':
                        arg = String(!!arg)
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 'T':
                        arg = Object.prototype.toString.call(arg).slice(8, -1).toLowerCase()
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 'u':
                        arg = parseInt(arg, 10) >>> 0
                        break
                    case 'v':
                        arg = arg.valueOf()
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 'x':
                        arg = (parseInt(arg, 10) >>> 0).toString(16)
                        break
                    case 'X':
                        arg = (parseInt(arg, 10) >>> 0).toString(16).toUpperCase()
                        break
                }
                if (re.json.test(match[8])) {
                    output += arg
                }
                else {
                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
                        sign = is_positive ? '+' : '-'
                        arg = arg.toString().replace(re.sign, '')
                    }
                    else {
                        sign = ''
                    }
                    pad_character = match[4] ? match[4] === '0' ? '0' : match[4].charAt(1) : ' '
                    pad_length = match[6] - (sign + arg).length
                    pad = match[6] ? (pad_length > 0 ? pad_character.repeat(pad_length) : '') : ''
                    output += match[5] ? sign + arg + pad : (pad_character === '0' ? sign + pad + arg : pad + sign + arg)
                }
            }
        }
        return output
    }

    var sprintf_cache = Object.create(null)

    function sprintf_parse(fmt) {
        if (sprintf_cache[fmt]) {
            return sprintf_cache[fmt]
        }

        var _fmt = fmt, match, parse_tree = [], arg_names = 0
        while (_fmt) {
            if ((match = re.text.exec(_fmt)) !== null) {
                parse_tree.push(match[0])
            }
            else if ((match = re.modulo.exec(_fmt)) !== null) {
                parse_tree.push('%')
            }
            else if ((match = re.placeholder.exec(_fmt)) !== null) {
                if (match[2]) {
                    arg_names |= 1
                    var field_list = [], replacement_field = match[2], field_match = []
                    if ((field_match = re.key.exec(replacement_field)) !== null) {
                        field_list.push(field_match[1])
                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
                                field_list.push(field_match[1])
                            }
                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
                                field_list.push(field_match[1])
                            }
                            else {
                                throw new SyntaxError('[sprintf] failed to parse named argument key')
                            }
                        }
                    }
                    else {
                        throw new SyntaxError('[sprintf] failed to parse named argument key')
                    }
                    match[2] = field_list
                }
                else {
                    arg_names |= 2
                }
                if (arg_names === 3) {
                    throw new Error('[sprintf] mixing positional and named placeholders is not (yet) supported')
                }
                parse_tree.push(match)
            }
            else {
                throw new SyntaxError('[sprintf] unexpected placeholder')
            }
            _fmt = _fmt.substring(match[0].length)
        }
        return sprintf_cache[fmt] = parse_tree
    }

    /**
     * export to either browser or node.js
     */
    /* eslint-disable quote-props */
    if (true) {
        exports['sprintf'] = sprintf
        exports['vsprintf'] = vsprintf
    }
    if (typeof window !== 'undefined') {
        window['sprintf'] = sprintf
        window['vsprintf'] = vsprintf

        if (true) {
            !(__WEBPACK_AMD_DEFINE_RESULT__ = (function() {
                return {
                    'sprintf': sprintf,
                    'vsprintf': vsprintf
                }
            }).call(exports, __webpack_require__, exports, module),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__))
        }
    }
    /* eslint-enable quote-props */
}()


/***/ }),
/* 244 */
/*!*************************************************!*\
  !*** ./node_modules/brace/worker/javascript.js ***!
  \*************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports.id = 'ace/mode/javascript_worker';
module.exports.src = "\"no use strict\";!function(window){function resolveModuleId(id,paths){for(var testPath=id,tail=\"\";testPath;){var alias=paths[testPath];if(\"string\"==typeof alias)return alias+tail;if(alias)return alias.location.replace(/\\/*$/,\"/\")+(tail||alias.main||alias.name);if(alias===!1)return\"\";var i=testPath.lastIndexOf(\"/\");if(-1===i)break;tail=testPath.substr(i)+tail,testPath=testPath.slice(0,i)}return id}if(!(void 0!==window.window&&window.document||window.acequire&&window.define)){window.console||(window.console=function(){var msgs=Array.prototype.slice.call(arguments,0);postMessage({type:\"log\",data:msgs})},window.console.error=window.console.warn=window.console.log=window.console.trace=window.console),window.window=window,window.ace=window,window.onerror=function(message,file,line,col,err){postMessage({type:\"error\",data:{message:message,data:err.data,file:file,line:line,col:col,stack:err.stack}})},window.normalizeModule=function(parentId,moduleName){if(-1!==moduleName.indexOf(\"!\")){var chunks=moduleName.split(\"!\");return window.normalizeModule(parentId,chunks[0])+\"!\"+window.normalizeModule(parentId,chunks[1])}if(\".\"==moduleName.charAt(0)){var base=parentId.split(\"/\").slice(0,-1).join(\"/\");for(moduleName=(base?base+\"/\":\"\")+moduleName;-1!==moduleName.indexOf(\".\")&&previous!=moduleName;){var previous=moduleName;moduleName=moduleName.replace(/^\\.\\//,\"\").replace(/\\/\\.\\//,\"/\").replace(/[^\\/]+\\/\\.\\.\\//,\"\")}}return moduleName},window.acequire=function acequire(parentId,id){if(id||(id=parentId,parentId=null),!id.charAt)throw Error(\"worker.js acequire() accepts only (parentId, id) as arguments\");id=window.normalizeModule(parentId,id);var module=window.acequire.modules[id];if(module)return module.initialized||(module.initialized=!0,module.exports=module.factory().exports),module.exports;if(!window.acequire.tlns)return console.log(\"unable to load \"+id);var path=resolveModuleId(id,window.acequire.tlns);return\".js\"!=path.slice(-3)&&(path+=\".js\"),window.acequire.id=id,window.acequire.modules[id]={},importScripts(path),window.acequire(parentId,id)},window.acequire.modules={},window.acequire.tlns={},window.define=function(id,deps,factory){if(2==arguments.length?(factory=deps,\"string\"!=typeof id&&(deps=id,id=window.acequire.id)):1==arguments.length&&(factory=id,deps=[],id=window.acequire.id),\"function\"!=typeof factory)return window.acequire.modules[id]={exports:factory,initialized:!0},void 0;deps.length||(deps=[\"require\",\"exports\",\"module\"]);var req=function(childId){return window.acequire(id,childId)};window.acequire.modules[id]={exports:{},factory:function(){var module=this,returnExports=factory.apply(this,deps.map(function(dep){switch(dep){case\"require\":return req;case\"exports\":return module.exports;case\"module\":return module;default:return req(dep)}}));return returnExports&&(module.exports=returnExports),module}}},window.define.amd={},acequire.tlns={},window.initBaseUrls=function(topLevelNamespaces){for(var i in topLevelNamespaces)acequire.tlns[i]=topLevelNamespaces[i]},window.initSender=function(){var EventEmitter=window.acequire(\"ace/lib/event_emitter\").EventEmitter,oop=window.acequire(\"ace/lib/oop\"),Sender=function(){};return function(){oop.implement(this,EventEmitter),this.callback=function(data,callbackId){postMessage({type:\"call\",id:callbackId,data:data})},this.emit=function(name,data){postMessage({type:\"event\",name:name,data:data})}}.call(Sender.prototype),new Sender};var main=window.main=null,sender=window.sender=null;window.onmessage=function(e){var msg=e.data;if(msg.event&&sender)sender._signal(msg.event,msg.data);else if(msg.command)if(main[msg.command])main[msg.command].apply(main,msg.args);else{if(!window[msg.command])throw Error(\"Unknown command:\"+msg.command);window[msg.command].apply(window,msg.args)}else if(msg.init){window.initBaseUrls(msg.tlns),acequire(\"ace/lib/es5-shim\"),sender=window.sender=window.initSender();var clazz=acequire(msg.module)[msg.classname];main=window.main=new clazz(sender)}}}}(this),ace.define(\"ace/lib/oop\",[\"require\",\"exports\",\"module\"],function(acequire,exports){\"use strict\";exports.inherits=function(ctor,superCtor){ctor.super_=superCtor,ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:!1,writable:!0,configurable:!0}})},exports.mixin=function(obj,mixin){for(var key in mixin)obj[key]=mixin[key];return obj},exports.implement=function(proto,mixin){exports.mixin(proto,mixin)}}),ace.define(\"ace/range\",[\"require\",\"exports\",\"module\"],function(acequire,exports){\"use strict\";var comparePoints=function(p1,p2){return p1.row-p2.row||p1.column-p2.column},Range=function(startRow,startColumn,endRow,endColumn){this.start={row:startRow,column:startColumn},this.end={row:endRow,column:endColumn}};(function(){this.isEqual=function(range){return this.start.row===range.start.row&&this.end.row===range.end.row&&this.start.column===range.start.column&&this.end.column===range.end.column},this.toString=function(){return\"Range: [\"+this.start.row+\"/\"+this.start.column+\"] -> [\"+this.end.row+\"/\"+this.end.column+\"]\"},this.contains=function(row,column){return 0==this.compare(row,column)},this.compareRange=function(range){var cmp,end=range.end,start=range.start;return cmp=this.compare(end.row,end.column),1==cmp?(cmp=this.compare(start.row,start.column),1==cmp?2:0==cmp?1:0):-1==cmp?-2:(cmp=this.compare(start.row,start.column),-1==cmp?-1:1==cmp?42:0)},this.comparePoint=function(p){return this.compare(p.row,p.column)},this.containsRange=function(range){return 0==this.comparePoint(range.start)&&0==this.comparePoint(range.end)},this.intersects=function(range){var cmp=this.compareRange(range);return-1==cmp||0==cmp||1==cmp},this.isEnd=function(row,column){return this.end.row==row&&this.end.column==column},this.isStart=function(row,column){return this.start.row==row&&this.start.column==column},this.setStart=function(row,column){\"object\"==typeof row?(this.start.column=row.column,this.start.row=row.row):(this.start.row=row,this.start.column=column)},this.setEnd=function(row,column){\"object\"==typeof row?(this.end.column=row.column,this.end.row=row.row):(this.end.row=row,this.end.column=column)},this.inside=function(row,column){return 0==this.compare(row,column)?this.isEnd(row,column)||this.isStart(row,column)?!1:!0:!1},this.insideStart=function(row,column){return 0==this.compare(row,column)?this.isEnd(row,column)?!1:!0:!1},this.insideEnd=function(row,column){return 0==this.compare(row,column)?this.isStart(row,column)?!1:!0:!1},this.compare=function(row,column){return this.isMultiLine()||row!==this.start.row?this.start.row>row?-1:row>this.end.row?1:this.start.row===row?column>=this.start.column?0:-1:this.end.row===row?this.end.column>=column?0:1:0:this.start.column>column?-1:column>this.end.column?1:0},this.compareStart=function(row,column){return this.start.row==row&&this.start.column==column?-1:this.compare(row,column)},this.compareEnd=function(row,column){return this.end.row==row&&this.end.column==column?1:this.compare(row,column)},this.compareInside=function(row,column){return this.end.row==row&&this.end.column==column?1:this.start.row==row&&this.start.column==column?-1:this.compare(row,column)},this.clipRows=function(firstRow,lastRow){if(this.end.row>lastRow)var end={row:lastRow+1,column:0};else if(firstRow>this.end.row)var end={row:firstRow,column:0};if(this.start.row>lastRow)var start={row:lastRow+1,column:0};else if(firstRow>this.start.row)var start={row:firstRow,column:0};return Range.fromPoints(start||this.start,end||this.end)},this.extend=function(row,column){var cmp=this.compare(row,column);if(0==cmp)return this;if(-1==cmp)var start={row:row,column:column};else var end={row:row,column:column};return Range.fromPoints(start||this.start,end||this.end)},this.isEmpty=function(){return this.start.row===this.end.row&&this.start.column===this.end.column},this.isMultiLine=function(){return this.start.row!==this.end.row},this.clone=function(){return Range.fromPoints(this.start,this.end)},this.collapseRows=function(){return 0==this.end.column?new Range(this.start.row,0,Math.max(this.start.row,this.end.row-1),0):new Range(this.start.row,0,this.end.row,0)},this.toScreenRange=function(session){var screenPosStart=session.documentToScreenPosition(this.start),screenPosEnd=session.documentToScreenPosition(this.end);return new Range(screenPosStart.row,screenPosStart.column,screenPosEnd.row,screenPosEnd.column)},this.moveBy=function(row,column){this.start.row+=row,this.start.column+=column,this.end.row+=row,this.end.column+=column}}).call(Range.prototype),Range.fromPoints=function(start,end){return new Range(start.row,start.column,end.row,end.column)},Range.comparePoints=comparePoints,Range.comparePoints=function(p1,p2){return p1.row-p2.row||p1.column-p2.column},exports.Range=Range}),ace.define(\"ace/apply_delta\",[\"require\",\"exports\",\"module\"],function(acequire,exports){\"use strict\";exports.applyDelta=function(docLines,delta){var row=delta.start.row,startColumn=delta.start.column,line=docLines[row]||\"\";switch(delta.action){case\"insert\":var lines=delta.lines;if(1===lines.length)docLines[row]=line.substring(0,startColumn)+delta.lines[0]+line.substring(startColumn);else{var args=[row,1].concat(delta.lines);docLines.splice.apply(docLines,args),docLines[row]=line.substring(0,startColumn)+docLines[row],docLines[row+delta.lines.length-1]+=line.substring(startColumn)}break;case\"remove\":var endColumn=delta.end.column,endRow=delta.end.row;row===endRow?docLines[row]=line.substring(0,startColumn)+line.substring(endColumn):docLines.splice(row,endRow-row+1,line.substring(0,startColumn)+docLines[endRow].substring(endColumn))}}}),ace.define(\"ace/lib/event_emitter\",[\"require\",\"exports\",\"module\"],function(acequire,exports){\"use strict\";var EventEmitter={},stopPropagation=function(){this.propagationStopped=!0},preventDefault=function(){this.defaultPrevented=!0};EventEmitter._emit=EventEmitter._dispatchEvent=function(eventName,e){this._eventRegistry||(this._eventRegistry={}),this._defaultHandlers||(this._defaultHandlers={});var listeners=this._eventRegistry[eventName]||[],defaultHandler=this._defaultHandlers[eventName];if(listeners.length||defaultHandler){\"object\"==typeof e&&e||(e={}),e.type||(e.type=eventName),e.stopPropagation||(e.stopPropagation=stopPropagation),e.preventDefault||(e.preventDefault=preventDefault),listeners=listeners.slice();for(var i=0;listeners.length>i&&(listeners[i](e,this),!e.propagationStopped);i++);return defaultHandler&&!e.defaultPrevented?defaultHandler(e,this):void 0}},EventEmitter._signal=function(eventName,e){var listeners=(this._eventRegistry||{})[eventName];if(listeners){listeners=listeners.slice();for(var i=0;listeners.length>i;i++)listeners[i](e,this)}},EventEmitter.once=function(eventName,callback){var _self=this;callback&&this.addEventListener(eventName,function newCallback(){_self.removeEventListener(eventName,newCallback),callback.apply(null,arguments)})},EventEmitter.setDefaultHandler=function(eventName,callback){var handlers=this._defaultHandlers;if(handlers||(handlers=this._defaultHandlers={_disabled_:{}}),handlers[eventName]){var old=handlers[eventName],disabled=handlers._disabled_[eventName];disabled||(handlers._disabled_[eventName]=disabled=[]),disabled.push(old);var i=disabled.indexOf(callback);-1!=i&&disabled.splice(i,1)}handlers[eventName]=callback},EventEmitter.removeDefaultHandler=function(eventName,callback){var handlers=this._defaultHandlers;if(handlers){var disabled=handlers._disabled_[eventName];if(handlers[eventName]==callback)handlers[eventName],disabled&&this.setDefaultHandler(eventName,disabled.pop());else if(disabled){var i=disabled.indexOf(callback);-1!=i&&disabled.splice(i,1)}}},EventEmitter.on=EventEmitter.addEventListener=function(eventName,callback,capturing){this._eventRegistry=this._eventRegistry||{};var listeners=this._eventRegistry[eventName];return listeners||(listeners=this._eventRegistry[eventName]=[]),-1==listeners.indexOf(callback)&&listeners[capturing?\"unshift\":\"push\"](callback),callback},EventEmitter.off=EventEmitter.removeListener=EventEmitter.removeEventListener=function(eventName,callback){this._eventRegistry=this._eventRegistry||{};var listeners=this._eventRegistry[eventName];if(listeners){var index=listeners.indexOf(callback);-1!==index&&listeners.splice(index,1)}},EventEmitter.removeAllListeners=function(eventName){this._eventRegistry&&(this._eventRegistry[eventName]=[])},exports.EventEmitter=EventEmitter}),ace.define(\"ace/anchor\",[\"require\",\"exports\",\"module\",\"ace/lib/oop\",\"ace/lib/event_emitter\"],function(acequire,exports){\"use strict\";var oop=acequire(\"./lib/oop\"),EventEmitter=acequire(\"./lib/event_emitter\").EventEmitter,Anchor=exports.Anchor=function(doc,row,column){this.$onChange=this.onChange.bind(this),this.attach(doc),column===void 0?this.setPosition(row.row,row.column):this.setPosition(row,column)};(function(){function $pointsInOrder(point1,point2,equalPointsInOrder){var bColIsAfter=equalPointsInOrder?point1.column<=point2.column:point1.column<point2.column;return point1.row<point2.row||point1.row==point2.row&&bColIsAfter}function $getTransformedPoint(delta,point,moveIfEqual){var deltaIsInsert=\"insert\"==delta.action,deltaRowShift=(deltaIsInsert?1:-1)*(delta.end.row-delta.start.row),deltaColShift=(deltaIsInsert?1:-1)*(delta.end.column-delta.start.column),deltaStart=delta.start,deltaEnd=deltaIsInsert?deltaStart:delta.end;return $pointsInOrder(point,deltaStart,moveIfEqual)?{row:point.row,column:point.column}:$pointsInOrder(deltaEnd,point,!moveIfEqual)?{row:point.row+deltaRowShift,column:point.column+(point.row==deltaEnd.row?deltaColShift:0)}:{row:deltaStart.row,column:deltaStart.column}}oop.implement(this,EventEmitter),this.getPosition=function(){return this.$clipPositionToDocument(this.row,this.column)},this.getDocument=function(){return this.document},this.$insertRight=!1,this.onChange=function(delta){if(!(delta.start.row==delta.end.row&&delta.start.row!=this.row||delta.start.row>this.row)){var point=$getTransformedPoint(delta,{row:this.row,column:this.column},this.$insertRight);this.setPosition(point.row,point.column,!0)}},this.setPosition=function(row,column,noClip){var pos;if(pos=noClip?{row:row,column:column}:this.$clipPositionToDocument(row,column),this.row!=pos.row||this.column!=pos.column){var old={row:this.row,column:this.column};this.row=pos.row,this.column=pos.column,this._signal(\"change\",{old:old,value:pos})}},this.detach=function(){this.document.removeEventListener(\"change\",this.$onChange)},this.attach=function(doc){this.document=doc||this.document,this.document.on(\"change\",this.$onChange)},this.$clipPositionToDocument=function(row,column){var pos={};return row>=this.document.getLength()?(pos.row=Math.max(0,this.document.getLength()-1),pos.column=this.document.getLine(pos.row).length):0>row?(pos.row=0,pos.column=0):(pos.row=row,pos.column=Math.min(this.document.getLine(pos.row).length,Math.max(0,column))),0>column&&(pos.column=0),pos}}).call(Anchor.prototype)}),ace.define(\"ace/document\",[\"require\",\"exports\",\"module\",\"ace/lib/oop\",\"ace/apply_delta\",\"ace/lib/event_emitter\",\"ace/range\",\"ace/anchor\"],function(acequire,exports){\"use strict\";var oop=acequire(\"./lib/oop\"),applyDelta=acequire(\"./apply_delta\").applyDelta,EventEmitter=acequire(\"./lib/event_emitter\").EventEmitter,Range=acequire(\"./range\").Range,Anchor=acequire(\"./anchor\").Anchor,Document=function(textOrLines){this.$lines=[\"\"],0===textOrLines.length?this.$lines=[\"\"]:Array.isArray(textOrLines)?this.insertMergedLines({row:0,column:0},textOrLines):this.insert({row:0,column:0},textOrLines)};(function(){oop.implement(this,EventEmitter),this.setValue=function(text){var len=this.getLength()-1;this.remove(new Range(0,0,len,this.getLine(len).length)),this.insert({row:0,column:0},text)},this.getValue=function(){return this.getAllLines().join(this.getNewLineCharacter())},this.createAnchor=function(row,column){return new Anchor(this,row,column)},this.$split=0===\"aaa\".split(/a/).length?function(text){return text.replace(/\\r\\n|\\r/g,\"\\n\").split(\"\\n\")}:function(text){return text.split(/\\r\\n|\\r|\\n/)},this.$detectNewLine=function(text){var match=text.match(/^.*?(\\r\\n|\\r|\\n)/m);this.$autoNewLine=match?match[1]:\"\\n\",this._signal(\"changeNewLineMode\")},this.getNewLineCharacter=function(){switch(this.$newLineMode){case\"windows\":return\"\\r\\n\";case\"unix\":return\"\\n\";default:return this.$autoNewLine||\"\\n\"}},this.$autoNewLine=\"\",this.$newLineMode=\"auto\",this.setNewLineMode=function(newLineMode){this.$newLineMode!==newLineMode&&(this.$newLineMode=newLineMode,this._signal(\"changeNewLineMode\"))},this.getNewLineMode=function(){return this.$newLineMode},this.isNewLine=function(text){return\"\\r\\n\"==text||\"\\r\"==text||\"\\n\"==text},this.getLine=function(row){return this.$lines[row]||\"\"},this.getLines=function(firstRow,lastRow){return this.$lines.slice(firstRow,lastRow+1)},this.getAllLines=function(){return this.getLines(0,this.getLength())},this.getLength=function(){return this.$lines.length},this.getTextRange=function(range){return this.getLinesForRange(range).join(this.getNewLineCharacter())},this.getLinesForRange=function(range){var lines;if(range.start.row===range.end.row)lines=[this.getLine(range.start.row).substring(range.start.column,range.end.column)];else{lines=this.getLines(range.start.row,range.end.row),lines[0]=(lines[0]||\"\").substring(range.start.column);var l=lines.length-1;range.end.row-range.start.row==l&&(lines[l]=lines[l].substring(0,range.end.column))}return lines},this.insertLines=function(row,lines){return console.warn(\"Use of document.insertLines is deprecated. Use the insertFullLines method instead.\"),this.insertFullLines(row,lines)},this.removeLines=function(firstRow,lastRow){return console.warn(\"Use of document.removeLines is deprecated. Use the removeFullLines method instead.\"),this.removeFullLines(firstRow,lastRow)},this.insertNewLine=function(position){return console.warn(\"Use of document.insertNewLine is deprecated. Use insertMergedLines(position, ['', '']) instead.\"),this.insertMergedLines(position,[\"\",\"\"])},this.insert=function(position,text){return 1>=this.getLength()&&this.$detectNewLine(text),this.insertMergedLines(position,this.$split(text))},this.insertInLine=function(position,text){var start=this.clippedPos(position.row,position.column),end=this.pos(position.row,position.column+text.length);return this.applyDelta({start:start,end:end,action:\"insert\",lines:[text]},!0),this.clonePos(end)},this.clippedPos=function(row,column){var length=this.getLength();void 0===row?row=length:0>row?row=0:row>=length&&(row=length-1,column=void 0);var line=this.getLine(row);return void 0==column&&(column=line.length),column=Math.min(Math.max(column,0),line.length),{row:row,column:column}},this.clonePos=function(pos){return{row:pos.row,column:pos.column}},this.pos=function(row,column){return{row:row,column:column}},this.$clipPosition=function(position){var length=this.getLength();return position.row>=length?(position.row=Math.max(0,length-1),position.column=this.getLine(length-1).length):(position.row=Math.max(0,position.row),position.column=Math.min(Math.max(position.column,0),this.getLine(position.row).length)),position},this.insertFullLines=function(row,lines){row=Math.min(Math.max(row,0),this.getLength());var column=0;this.getLength()>row?(lines=lines.concat([\"\"]),column=0):(lines=[\"\"].concat(lines),row--,column=this.$lines[row].length),this.insertMergedLines({row:row,column:column},lines)},this.insertMergedLines=function(position,lines){var start=this.clippedPos(position.row,position.column),end={row:start.row+lines.length-1,column:(1==lines.length?start.column:0)+lines[lines.length-1].length};return this.applyDelta({start:start,end:end,action:\"insert\",lines:lines}),this.clonePos(end)},this.remove=function(range){var start=this.clippedPos(range.start.row,range.start.column),end=this.clippedPos(range.end.row,range.end.column);return this.applyDelta({start:start,end:end,action:\"remove\",lines:this.getLinesForRange({start:start,end:end})}),this.clonePos(start)},this.removeInLine=function(row,startColumn,endColumn){var start=this.clippedPos(row,startColumn),end=this.clippedPos(row,endColumn);return this.applyDelta({start:start,end:end,action:\"remove\",lines:this.getLinesForRange({start:start,end:end})},!0),this.clonePos(start)},this.removeFullLines=function(firstRow,lastRow){firstRow=Math.min(Math.max(0,firstRow),this.getLength()-1),lastRow=Math.min(Math.max(0,lastRow),this.getLength()-1);var deleteFirstNewLine=lastRow==this.getLength()-1&&firstRow>0,deleteLastNewLine=this.getLength()-1>lastRow,startRow=deleteFirstNewLine?firstRow-1:firstRow,startCol=deleteFirstNewLine?this.getLine(startRow).length:0,endRow=deleteLastNewLine?lastRow+1:lastRow,endCol=deleteLastNewLine?0:this.getLine(endRow).length,range=new Range(startRow,startCol,endRow,endCol),deletedLines=this.$lines.slice(firstRow,lastRow+1);return this.applyDelta({start:range.start,end:range.end,action:\"remove\",lines:this.getLinesForRange(range)}),deletedLines},this.removeNewLine=function(row){this.getLength()-1>row&&row>=0&&this.applyDelta({start:this.pos(row,this.getLine(row).length),end:this.pos(row+1,0),action:\"remove\",lines:[\"\",\"\"]})},this.replace=function(range,text){if(range instanceof Range||(range=Range.fromPoints(range.start,range.end)),0===text.length&&range.isEmpty())return range.start;if(text==this.getTextRange(range))return range.end;this.remove(range);var end;return end=text?this.insert(range.start,text):range.start},this.applyDeltas=function(deltas){for(var i=0;deltas.length>i;i++)this.applyDelta(deltas[i])},this.revertDeltas=function(deltas){for(var i=deltas.length-1;i>=0;i--)this.revertDelta(deltas[i])},this.applyDelta=function(delta,doNotValidate){var isInsert=\"insert\"==delta.action;(isInsert?1>=delta.lines.length&&!delta.lines[0]:!Range.comparePoints(delta.start,delta.end))||(isInsert&&delta.lines.length>2e4&&this.$splitAndapplyLargeDelta(delta,2e4),applyDelta(this.$lines,delta,doNotValidate),this._signal(\"change\",delta))},this.$splitAndapplyLargeDelta=function(delta,MAX){for(var lines=delta.lines,l=lines.length,row=delta.start.row,column=delta.start.column,from=0,to=0;;){from=to,to+=MAX-1;var chunk=lines.slice(from,to);if(to>l){delta.lines=chunk,delta.start.row=row+from,delta.start.column=column;break}chunk.push(\"\"),this.applyDelta({start:this.pos(row+from,column),end:this.pos(row+to,column=0),action:delta.action,lines:chunk},!0)}},this.revertDelta=function(delta){this.applyDelta({start:this.clonePos(delta.start),end:this.clonePos(delta.end),action:\"insert\"==delta.action?\"remove\":\"insert\",lines:delta.lines.slice()})},this.indexToPosition=function(index,startRow){for(var lines=this.$lines||this.getAllLines(),newlineLength=this.getNewLineCharacter().length,i=startRow||0,l=lines.length;l>i;i++)if(index-=lines[i].length+newlineLength,0>index)return{row:i,column:index+lines[i].length+newlineLength};return{row:l-1,column:lines[l-1].length}},this.positionToIndex=function(pos,startRow){for(var lines=this.$lines||this.getAllLines(),newlineLength=this.getNewLineCharacter().length,index=0,row=Math.min(pos.row,lines.length),i=startRow||0;row>i;++i)index+=lines[i].length+newlineLength;return index+pos.column}}).call(Document.prototype),exports.Document=Document}),ace.define(\"ace/lib/lang\",[\"require\",\"exports\",\"module\"],function(acequire,exports){\"use strict\";exports.last=function(a){return a[a.length-1]},exports.stringReverse=function(string){return string.split(\"\").reverse().join(\"\")},exports.stringRepeat=function(string,count){for(var result=\"\";count>0;)1&count&&(result+=string),(count>>=1)&&(string+=string);return result};var trimBeginRegexp=/^\\s\\s*/,trimEndRegexp=/\\s\\s*$/;exports.stringTrimLeft=function(string){return string.replace(trimBeginRegexp,\"\")},exports.stringTrimRight=function(string){return string.replace(trimEndRegexp,\"\")},exports.copyObject=function(obj){var copy={};for(var key in obj)copy[key]=obj[key];return copy},exports.copyArray=function(array){for(var copy=[],i=0,l=array.length;l>i;i++)copy[i]=array[i]&&\"object\"==typeof array[i]?this.copyObject(array[i]):array[i];return copy},exports.deepCopy=function deepCopy(obj){if(\"object\"!=typeof obj||!obj)return obj;var copy;if(Array.isArray(obj)){copy=[];for(var key=0;obj.length>key;key++)copy[key]=deepCopy(obj[key]);return copy}if(\"[object Object]\"!==Object.prototype.toString.call(obj))return obj;copy={};for(var key in obj)copy[key]=deepCopy(obj[key]);return copy},exports.arrayToMap=function(arr){for(var map={},i=0;arr.length>i;i++)map[arr[i]]=1;return map},exports.createMap=function(props){var map=Object.create(null);for(var i in props)map[i]=props[i];return map},exports.arrayRemove=function(array,value){for(var i=0;array.length>=i;i++)value===array[i]&&array.splice(i,1)},exports.escapeRegExp=function(str){return str.replace(/([.*+?^${}()|[\\]\\/\\\\])/g,\"\\\\$1\")},exports.escapeHTML=function(str){return str.replace(/&/g,\"&#38;\").replace(/\"/g,\"&#34;\").replace(/'/g,\"&#39;\").replace(/</g,\"&#60;\")},exports.getMatchOffsets=function(string,regExp){var matches=[];return string.replace(regExp,function(str){matches.push({offset:arguments[arguments.length-2],length:str.length})}),matches},exports.deferredCall=function(fcn){var timer=null,callback=function(){timer=null,fcn()},deferred=function(timeout){return deferred.cancel(),timer=setTimeout(callback,timeout||0),deferred};return deferred.schedule=deferred,deferred.call=function(){return this.cancel(),fcn(),deferred},deferred.cancel=function(){return clearTimeout(timer),timer=null,deferred},deferred.isPending=function(){return timer},deferred},exports.delayedCall=function(fcn,defaultTimeout){var timer=null,callback=function(){timer=null,fcn()},_self=function(timeout){null==timer&&(timer=setTimeout(callback,timeout||defaultTimeout))};return _self.delay=function(timeout){timer&&clearTimeout(timer),timer=setTimeout(callback,timeout||defaultTimeout)},_self.schedule=_self,_self.call=function(){this.cancel(),fcn()},_self.cancel=function(){timer&&clearTimeout(timer),timer=null},_self.isPending=function(){return timer},_self}}),ace.define(\"ace/worker/mirror\",[\"require\",\"exports\",\"module\",\"ace/range\",\"ace/document\",\"ace/lib/lang\"],function(acequire,exports){\"use strict\";acequire(\"../range\").Range;var Document=acequire(\"../document\").Document,lang=acequire(\"../lib/lang\"),Mirror=exports.Mirror=function(sender){this.sender=sender;var doc=this.doc=new Document(\"\"),deferredUpdate=this.deferredUpdate=lang.delayedCall(this.onUpdate.bind(this)),_self=this;sender.on(\"change\",function(e){var data=e.data;if(data[0].start)doc.applyDeltas(data);else for(var i=0;data.length>i;i+=2){if(Array.isArray(data[i+1]))var d={action:\"insert\",start:data[i],lines:data[i+1]};else var d={action:\"remove\",start:data[i],end:data[i+1]};doc.applyDelta(d,!0)}return _self.$timeout?deferredUpdate.schedule(_self.$timeout):(_self.onUpdate(),void 0)})};(function(){this.$timeout=500,this.setTimeout=function(timeout){this.$timeout=timeout},this.setValue=function(value){this.doc.setValue(value),this.deferredUpdate.schedule(this.$timeout)},this.getValue=function(callbackId){this.sender.callback(this.doc.getValue(),callbackId)},this.onUpdate=function(){},this.isPending=function(){return this.deferredUpdate.isPending()}}).call(Mirror.prototype)}),ace.define(\"ace/mode/javascript/jshint\",[\"require\",\"exports\",\"module\"],function(acequire,exports,module){module.exports=function outer(modules,cache,entry){function newRequire(name,jumped){if(!cache[name]){if(!modules[name]){var currentRequire=\"function\"==typeof acequire&&acequire;if(!jumped&&currentRequire)return currentRequire(name,!0);if(previousRequire)return previousRequire(name,!0);var err=Error(\"Cannot find module '\"+name+\"'\");throw err.code=\"MODULE_NOT_FOUND\",err}var m=cache[name]={exports:{}};modules[name][0].call(m.exports,function(x){var id=modules[name][1][x];return newRequire(id?id:x)},m,m.exports,outer,modules,cache,entry)}return cache[name].exports}for(var previousRequire=\"function\"==typeof acequire&&acequire,i=0;entry.length>i;i++)newRequire(entry[i]);return newRequire(entry[0])}({\"/node_modules/browserify/node_modules/events/events.js\":[function(_dereq_,module){function EventEmitter(){this._events=this._events||{},this._maxListeners=this._maxListeners||void 0}function isFunction(arg){return\"function\"==typeof arg}function isNumber(arg){return\"number\"==typeof arg}function isObject(arg){return\"object\"==typeof arg&&null!==arg}function isUndefined(arg){return void 0===arg}module.exports=EventEmitter,EventEmitter.EventEmitter=EventEmitter,EventEmitter.prototype._events=void 0,EventEmitter.prototype._maxListeners=void 0,EventEmitter.defaultMaxListeners=10,EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||0>n||isNaN(n))throw TypeError(\"n must be a positive number\");return this._maxListeners=n,this},EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(this._events||(this._events={}),\"error\"===type&&(!this._events.error||isObject(this._events.error)&&!this._events.error.length)){if(er=arguments[1],er instanceof Error)throw er;throw TypeError('Uncaught, unspecified \"error\" event.')}if(handler=this._events[type],isUndefined(handler))return!1;if(isFunction(handler))switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:for(len=arguments.length,args=Array(len-1),i=1;len>i;i++)args[i-1]=arguments[i];handler.apply(this,args)}else if(isObject(handler)){for(len=arguments.length,args=Array(len-1),i=1;len>i;i++)args[i-1]=arguments[i];for(listeners=handler.slice(),len=listeners.length,i=0;len>i;i++)listeners[i].apply(this,args)}return!0},EventEmitter.prototype.addListener=function(type,listener){var m;if(!isFunction(listener))throw TypeError(\"listener must be a function\");if(this._events||(this._events={}),this._events.newListener&&this.emit(\"newListener\",type,isFunction(listener.listener)?listener.listener:listener),this._events[type]?isObject(this._events[type])?this._events[type].push(listener):this._events[type]=[this._events[type],listener]:this._events[type]=listener,isObject(this._events[type])&&!this._events[type].warned){var m;m=isUndefined(this._maxListeners)?EventEmitter.defaultMaxListeners:this._maxListeners,m&&m>0&&this._events[type].length>m&&(this._events[type].warned=!0,console.error(\"(node) warning: possible EventEmitter memory leak detected. %d listeners added. Use emitter.setMaxListeners() to increase limit.\",this._events[type].length),\"function\"==typeof console.trace&&console.trace())}return this},EventEmitter.prototype.on=EventEmitter.prototype.addListener,EventEmitter.prototype.once=function(type,listener){function g(){this.removeListener(type,g),fired||(fired=!0,listener.apply(this,arguments))}if(!isFunction(listener))throw TypeError(\"listener must be a function\");var fired=!1;return g.listener=listener,this.on(type,g),this},EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError(\"listener must be a function\");if(!this._events||!this._events[type])return this;if(list=this._events[type],length=list.length,position=-1,list===listener||isFunction(list.listener)&&list.listener===listener)delete this._events[type],this._events.removeListener&&this.emit(\"removeListener\",type,listener);else if(isObject(list)){for(i=length;i-->0;)if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}if(0>position)return this;1===list.length?(list.length=0,delete this._events[type]):list.splice(position,1),this._events.removeListener&&this.emit(\"removeListener\",type,listener)}return this},EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener)return 0===arguments.length?this._events={}:this._events[type]&&delete this._events[type],this;if(0===arguments.length){for(key in this._events)\"removeListener\"!==key&&this.removeAllListeners(key);return this.removeAllListeners(\"removeListener\"),this._events={},this\n}if(listeners=this._events[type],isFunction(listeners))this.removeListener(type,listeners);else for(;listeners.length;)this.removeListener(type,listeners[listeners.length-1]);return delete this._events[type],this},EventEmitter.prototype.listeners=function(type){var ret;return ret=this._events&&this._events[type]?isFunction(this._events[type])?[this._events[type]]:this._events[type].slice():[]},EventEmitter.listenerCount=function(emitter,type){var ret;return ret=emitter._events&&emitter._events[type]?isFunction(emitter._events[type])?1:emitter._events[type].length:0}},{}],\"/node_modules/jshint/data/ascii-identifier-data.js\":[function(_dereq_,module){for(var identifierStartTable=[],i=0;128>i;i++)identifierStartTable[i]=36===i||i>=65&&90>=i||95===i||i>=97&&122>=i;for(var identifierPartTable=[],i=0;128>i;i++)identifierPartTable[i]=identifierStartTable[i]||i>=48&&57>=i;module.exports={asciiIdentifierStartTable:identifierStartTable,asciiIdentifierPartTable:identifierPartTable}},{}],\"/node_modules/jshint/lodash.js\":[function(_dereq_,module,exports){(function(global){(function(){function baseFindIndex(array,predicate,fromRight){for(var length=array.length,index=fromRight?length:-1;fromRight?index--:length>++index;)if(predicate(array[index],index,array))return index;return-1}function baseIndexOf(array,value,fromIndex){if(value!==value)return indexOfNaN(array,fromIndex);for(var index=fromIndex-1,length=array.length;length>++index;)if(array[index]===value)return index;return-1}function baseIsFunction(value){return\"function\"==typeof value||!1}function baseToString(value){return\"string\"==typeof value?value:null==value?\"\":value+\"\"}function indexOfNaN(array,fromIndex,fromRight){for(var length=array.length,index=fromIndex+(fromRight?0:-1);fromRight?index--:length>++index;){var other=array[index];if(other!==other)return index}return-1}function isObjectLike(value){return!!value&&\"object\"==typeof value}function lodash(){}function arrayCopy(source,array){var index=-1,length=source.length;for(array||(array=Array(length));length>++index;)array[index]=source[index];return array}function arrayEach(array,iteratee){for(var 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comma(opts){if(opts=opts||{},opts.peek?nobreakcomma(state.tokens.prev,state.tokens.curr):(nobreakcomma(state.tokens.curr,state.tokens.next),advance(\",\")),state.tokens.next.identifier&&(!opts.property||!state.inES5()))switch(state.tokens.next.value){case\"break\":case\"case\":case\"catch\":case\"continue\":case\"default\":case\"do\":case\"else\":case\"finally\":case\"for\":case\"if\":case\"in\":case\"instanceof\":case\"return\":case\"switch\":case\"throw\":case\"try\":case\"var\":case\"let\":case\"while\":case\"with\":return error(\"E024\",state.tokens.next,state.tokens.next.value),!1}if(\"(punctuator)\"===state.tokens.next.type)switch(state.tokens.next.value){case\"}\":case\"]\":case\",\":if(opts.allowTrailing)return!0;case\")\":return error(\"E024\",state.tokens.next,state.tokens.next.value),!1}return!0}function symbol(s,p){var x=state.syntax[s];return x&&\"object\"==typeof x||(state.syntax[s]=x={id:s,lbp:p,value:s}),x}function delim(s){var x=symbol(s,0);return x.delim=!0,x}function stmt(s,f){var x=delim(s);return x.identifier=x.reserved=!0,x.fud=f,x}function blockstmt(s,f){var x=stmt(s,f);return x.block=!0,x}function reserveName(x){var c=x.id.charAt(0);return(c>=\"a\"&&\"z\">=c||c>=\"A\"&&\"Z\">=c)&&(x.identifier=x.reserved=!0),x}function prefix(s,f){var x=symbol(s,150);return reserveName(x),x.nud=\"function\"==typeof f?f:function(){return this.arity=\"unary\",this.right=expression(150),(\"++\"===this.id||\"--\"===this.id)&&(state.option.plusplus?warning(\"W016\",this,this.id):!this.right||this.right.identifier&&!isReserved(this.right)||\".\"===this.right.id||\"[\"===this.right.id||warning(\"W017\",this),this.right&&this.right.isMetaProperty?error(\"E031\",this):this.right&&this.right.identifier&&state.funct[\"(scope)\"].block.modify(this.right.value,this)),this},x}function type(s,f){var x=delim(s);return x.type=s,x.nud=f,x}function reserve(name,func){var x=type(name,func);return x.identifier=!0,x.reserved=!0,x}function FutureReservedWord(name,meta){var x=type(name,meta&&meta.nud||function(){return this});return meta=meta||{},meta.isFutureReservedWord=!0,x.value=name,x.identifier=!0,x.reserved=!0,x.meta=meta,x}function reservevar(s,v){return reserve(s,function(){return\"function\"==typeof v&&v(this),this})}function infix(s,f,p,w){var x=symbol(s,p);return reserveName(x),x.infix=!0,x.led=function(left){return w||nobreaknonadjacent(state.tokens.prev,state.tokens.curr),\"in\"!==s&&\"instanceof\"!==s||\"!\"!==left.id||warning(\"W018\",left,\"!\"),\"function\"==typeof f?f(left,this):(this.left=left,this.right=expression(p),this)},x}function application(s){var x=symbol(s,42);return x.led=function(left){return nobreaknonadjacent(state.tokens.prev,state.tokens.curr),this.left=left,this.right=doFunction({type:\"arrow\",loneArg:left}),this},x}function relation(s,f){var x=symbol(s,100);return x.led=function(left){nobreaknonadjacent(state.tokens.prev,state.tokens.curr),this.left=left;var right=this.right=expression(100);return isIdentifier(left,\"NaN\")||isIdentifier(right,\"NaN\")?warning(\"W019\",this):f&&f.apply(this,[left,right]),left&&right||quit(\"E041\",state.tokens.curr.line),\"!\"===left.id&&warning(\"W018\",left,\"!\"),\"!\"===right.id&&warning(\"W018\",right,\"!\"),this},x}function isPoorRelation(node){return node&&(\"(number)\"===node.type&&0===+node.value||\"(string)\"===node.type&&\"\"===node.value||\"null\"===node.type&&!state.option.eqnull||\"true\"===node.type||\"false\"===node.type||\"undefined\"===node.type)}function isTypoTypeof(left,right,state){var values;return state.option.notypeof?!1:left&&right?(values=state.inES6()?typeofValues.es6:typeofValues.es3,\"(identifier)\"===right.type&&\"typeof\"===right.value&&\"(string)\"===left.type?!_.contains(values,left.value):!1):!1}function isGlobalEval(left,state){var isGlobal=!1;return\"this\"===left.type&&null===state.funct[\"(context)\"]?isGlobal=!0:\"(identifier)\"===left.type&&(state.option.node&&\"global\"===left.value?isGlobal=!0:!state.option.browser||\"window\"!==left.value&&\"document\"!==left.value||(isGlobal=!0)),isGlobal}function findNativePrototype(left){function walkPrototype(obj){return\"object\"==typeof obj?\"prototype\"===obj.right?obj:walkPrototype(obj.left):void 0}function walkNative(obj){for(;!obj.identifier&&\"object\"==typeof obj.left;)obj=obj.left;return obj.identifier&&natives.indexOf(obj.value)>=0?obj.value:void 0}var natives=[\"Array\",\"ArrayBuffer\",\"Boolean\",\"Collator\",\"DataView\",\"Date\",\"DateTimeFormat\",\"Error\",\"EvalError\",\"Float32Array\",\"Float64Array\",\"Function\",\"Infinity\",\"Intl\",\"Int16Array\",\"Int32Array\",\"Int8Array\",\"Iterator\",\"Number\",\"NumberFormat\",\"Object\",\"RangeError\",\"ReferenceError\",\"RegExp\",\"StopIteration\",\"String\",\"SyntaxError\",\"TypeError\",\"Uint16Array\",\"Uint32Array\",\"Uint8Array\",\"Uint8ClampedArray\",\"URIError\"],prototype=walkPrototype(left);return prototype?walkNative(prototype):void 0}function checkLeftSideAssign(left,assignToken,options){var allowDestructuring=options&&options.allowDestructuring;if(assignToken=assignToken||left,state.option.freeze){var nativeObject=findNativePrototype(left);nativeObject&&warning(\"W121\",left,nativeObject)}return left.identifier&&!left.isMetaProperty&&state.funct[\"(scope)\"].block.reassign(left.value,left),\".\"===left.id?((!left.left||\"arguments\"===left.left.value&&!state.isStrict())&&warning(\"E031\",assignToken),state.nameStack.set(state.tokens.prev),!0):\"{\"===left.id||\"[\"===left.id?(allowDestructuring&&state.tokens.curr.left.destructAssign?state.tokens.curr.left.destructAssign.forEach(function(t){t.id&&state.funct[\"(scope)\"].block.modify(t.id,t.token)}):\"{\"!==left.id&&left.left?\"arguments\"!==left.left.value||state.isStrict()||warning(\"E031\",assignToken):warning(\"E031\",assignToken),\"[\"===left.id&&state.nameStack.set(left.right),!0):left.isMetaProperty?(error(\"E031\",assignToken),!0):left.identifier&&!isReserved(left)?(\"exception\"===state.funct[\"(scope)\"].labeltype(left.value)&&warning(\"W022\",left),state.nameStack.set(left),!0):(left===state.syntax[\"function\"]&&warning(\"W023\",state.tokens.curr),!1)}function assignop(s,f,p){var x=infix(s,\"function\"==typeof f?f:function(left,that){return that.left=left,left&&checkLeftSideAssign(left,that,{allowDestructuring:!0})?(that.right=expression(10),that):(error(\"E031\",that),void 0)},p);return x.exps=!0,x.assign=!0,x}function bitwise(s,f,p){var x=symbol(s,p);return reserveName(x),x.led=\"function\"==typeof f?f:function(left){return state.option.bitwise&&warning(\"W016\",this,this.id),this.left=left,this.right=expression(p),this},x}function bitwiseassignop(s){return assignop(s,function(left,that){return state.option.bitwise&&warning(\"W016\",that,that.id),left&&checkLeftSideAssign(left,that)?(that.right=expression(10),that):(error(\"E031\",that),void 0)},20)}function suffix(s){var x=symbol(s,150);return x.led=function(left){return state.option.plusplus?warning(\"W016\",this,this.id):left.identifier&&!isReserved(left)||\".\"===left.id||\"[\"===left.id||warning(\"W017\",this),left.isMetaProperty?error(\"E031\",this):left&&left.identifier&&state.funct[\"(scope)\"].block.modify(left.value,left),this.left=left,this},x}function optionalidentifier(fnparam,prop,preserve){if(state.tokens.next.identifier){preserve||advance();var curr=state.tokens.curr,val=state.tokens.curr.value;return isReserved(curr)?prop&&state.inES5()?val:fnparam&&\"undefined\"===val?val:(warning(\"W024\",state.tokens.curr,state.tokens.curr.id),val):val}}function identifier(fnparam,prop){var i=optionalidentifier(fnparam,prop,!1);if(i)return i;if(\"...\"===state.tokens.next.value){if(state.inES6(!0)||warning(\"W119\",state.tokens.next,\"spread/rest operator\",\"6\"),advance(),checkPunctuator(state.tokens.next,\"...\"))for(warning(\"E024\",state.tokens.next,\"...\");checkPunctuator(state.tokens.next,\"...\");)advance();return state.tokens.next.identifier?identifier(fnparam,prop):(warning(\"E024\",state.tokens.curr,\"...\"),void 0)}error(\"E030\",state.tokens.next,state.tokens.next.value),\";\"!==state.tokens.next.id&&advance()}function reachable(controlToken){var t,i=0;if(\";\"===state.tokens.next.id&&!controlToken.inBracelessBlock)for(;;){do t=peek(i),i+=1;while(\"(end)\"!==t.id&&\"(comment)\"===t.id);if(t.reach)return;if(\"(endline)\"!==t.id){if(\"function\"===t.id){state.option.latedef===!0&&warning(\"W026\",t);break}warning(\"W027\",t,t.value,controlToken.value);break}}}function parseFinalSemicolon(){if(\";\"!==state.tokens.next.id){if(state.tokens.next.isUnclosed)return advance();var sameLine=startLine(state.tokens.next)===state.tokens.curr.line&&\"(end)\"!==state.tokens.next.id,blockEnd=checkPunctuator(state.tokens.next,\"}\");sameLine&&!blockEnd?errorAt(\"E058\",state.tokens.curr.line,state.tokens.curr.character):state.option.asi||(blockEnd&&!state.option.lastsemic||!sameLine)&&warningAt(\"W033\",state.tokens.curr.line,state.tokens.curr.character)}else advance(\";\")}function statement(){var r,i=indent,t=state.tokens.next,hasOwnScope=!1;if(\";\"===t.id)return advance(\";\"),void 0;var res=isReserved(t);if(res&&t.meta&&t.meta.isFutureReservedWord&&\":\"===peek().id&&(warning(\"W024\",t,t.id),res=!1),t.identifier&&!res&&\":\"===peek().id&&(advance(),advance(\":\"),hasOwnScope=!0,state.funct[\"(scope)\"].stack(),state.funct[\"(scope)\"].block.addBreakLabel(t.value,{token:state.tokens.curr}),state.tokens.next.labelled||\"{\"===state.tokens.next.value||warning(\"W028\",state.tokens.next,t.value,state.tokens.next.value),state.tokens.next.label=t.value,t=state.tokens.next),\"{\"===t.id){var iscase=\"case\"===state.funct[\"(verb)\"]&&\":\"===state.tokens.curr.value;return block(!0,!0,!1,!1,iscase),void 0}return r=expression(0,!0),!r||r.identifier&&\"function\"===r.value||\"(punctuator)\"===r.type&&r.left&&r.left.identifier&&\"function\"===r.left.value||state.isStrict()||\"global\"!==state.option.strict||warning(\"E007\"),t.block||(state.option.expr||r&&r.exps?state.option.nonew&&r&&r.left&&\"(\"===r.id&&\"new\"===r.left.id&&warning(\"W031\",t):warning(\"W030\",state.tokens.curr),parseFinalSemicolon()),indent=i,hasOwnScope&&state.funct[\"(scope)\"].unstack(),r}function statements(){for(var p,a=[];!state.tokens.next.reach&&\"(end)\"!==state.tokens.next.id;)\";\"===state.tokens.next.id?(p=peek(),(!p||\"(\"!==p.id&&\"[\"!==p.id)&&warning(\"W032\"),advance(\";\")):a.push(statement());return a}function directives(){for(var i,p,pn;\"(string)\"===state.tokens.next.id;){if(p=peek(0),\"(endline)\"===p.id){i=1;do pn=peek(i++);while(\"(endline)\"===pn.id);if(\";\"===pn.id)p=pn;else{if(\"[\"===pn.value||\".\"===pn.value)break;state.option.asi&&\"(\"!==pn.value||warning(\"W033\",state.tokens.next)}}else{if(\".\"===p.id||\"[\"===p.id)break;\";\"!==p.id&&warning(\"W033\",p)}advance();var directive=state.tokens.curr.value;(state.directive[directive]||\"use strict\"===directive&&\"implied\"===state.option.strict)&&warning(\"W034\",state.tokens.curr,directive),state.directive[directive]=!0,\";\"===p.id&&advance(\";\")}state.isStrict()&&(state.option[\"(explicitNewcap)\"]||(state.option.newcap=!0),state.option.undef=!0)}function block(ordinary,stmt,isfunc,isfatarrow,iscase){var a,m,t,line,d,b=inblock,old_indent=indent;inblock=ordinary,t=state.tokens.next;var metrics=state.funct[\"(metrics)\"];if(metrics.nestedBlockDepth+=1,metrics.verifyMaxNestedBlockDepthPerFunction(),\"{\"===state.tokens.next.id){if(advance(\"{\"),state.funct[\"(scope)\"].stack(),line=state.tokens.curr.line,\"}\"!==state.tokens.next.id){for(indent+=state.option.indent;!ordinary&&state.tokens.next.from>indent;)indent+=state.option.indent;if(isfunc){m={};for(d in state.directive)_.has(state.directive,d)&&(m[d]=state.directive[d]);directives(),state.option.strict&&state.funct[\"(context)\"][\"(global)\"]&&(m[\"use strict\"]||state.isStrict()||warning(\"E007\"))}a=statements(),metrics.statementCount+=a.length,indent-=state.option.indent}advance(\"}\",t),isfunc&&(state.funct[\"(scope)\"].validateParams(),m&&(state.directive=m)),state.funct[\"(scope)\"].unstack(),indent=old_indent}else if(ordinary)state.funct[\"(noblockscopedvar)\"]=\"for\"!==state.tokens.next.id,state.funct[\"(scope)\"].stack(),(!stmt||state.option.curly)&&warning(\"W116\",state.tokens.next,\"{\",state.tokens.next.value),state.tokens.next.inBracelessBlock=!0,indent+=state.option.indent,a=[statement()],indent-=state.option.indent,state.funct[\"(scope)\"].unstack(),delete state.funct[\"(noblockscopedvar)\"];else if(isfunc){if(state.funct[\"(scope)\"].stack(),m={},!stmt||isfatarrow||state.inMoz()||error(\"W118\",state.tokens.curr,\"function closure expressions\"),!stmt)for(d in state.directive)_.has(state.directive,d)&&(m[d]=state.directive[d]);expression(10),state.option.strict&&state.funct[\"(context)\"][\"(global)\"]&&(m[\"use strict\"]||state.isStrict()||warning(\"E007\")),state.funct[\"(scope)\"].unstack()}else error(\"E021\",state.tokens.next,\"{\",state.tokens.next.value);switch(state.funct[\"(verb)\"]){case\"break\":case\"continue\":case\"return\":case\"throw\":if(iscase)break;default:state.funct[\"(verb)\"]=null}return inblock=b,!ordinary||!state.option.noempty||a&&0!==a.length||warning(\"W035\",state.tokens.prev),metrics.nestedBlockDepth-=1,a}function countMember(m){membersOnly&&\"boolean\"!=typeof membersOnly[m]&&warning(\"W036\",state.tokens.curr,m),\"number\"==typeof member[m]?member[m]+=1:member[m]=1}function comprehensiveArrayExpression(){var res={};res.exps=!0,state.funct[\"(comparray)\"].stack();var reversed=!1;return\"for\"!==state.tokens.next.value&&(reversed=!0,state.inMoz()||warning(\"W116\",state.tokens.next,\"for\",state.tokens.next.value),state.funct[\"(comparray)\"].setState(\"use\"),res.right=expression(10)),advance(\"for\"),\"each\"===state.tokens.next.value&&(advance(\"each\"),state.inMoz()||warning(\"W118\",state.tokens.curr,\"for each\")),advance(\"(\"),state.funct[\"(comparray)\"].setState(\"define\"),res.left=expression(130),_.contains([\"in\",\"of\"],state.tokens.next.value)?advance():error(\"E045\",state.tokens.curr),state.funct[\"(comparray)\"].setState(\"generate\"),expression(10),advance(\")\"),\"if\"===state.tokens.next.value&&(advance(\"if\"),advance(\"(\"),state.funct[\"(comparray)\"].setState(\"filter\"),res.filter=expression(10),advance(\")\")),reversed||(state.funct[\"(comparray)\"].setState(\"use\"),res.right=expression(10)),advance(\"]\"),state.funct[\"(comparray)\"].unstack(),res}function isMethod(){return state.funct[\"(statement)\"]&&\"class\"===state.funct[\"(statement)\"].type||state.funct[\"(context)\"]&&\"class\"===state.funct[\"(context)\"][\"(verb)\"]}function isPropertyName(token){return token.identifier||\"(string)\"===token.id||\"(number)\"===token.id}function propertyName(preserveOrToken){var id,preserve=!0;return\"object\"==typeof preserveOrToken?id=preserveOrToken:(preserve=preserveOrToken,id=optionalidentifier(!1,!0,preserve)),id?\"object\"==typeof id&&(\"(string)\"===id.id||\"(identifier)\"===id.id?id=id.value:\"(number)\"===id.id&&(id=\"\"+id.value)):\"(string)\"===state.tokens.next.id?(id=state.tokens.next.value,preserve||advance()):\"(number)\"===state.tokens.next.id&&(id=\"\"+state.tokens.next.value,preserve||advance()),\"hasOwnProperty\"===id&&warning(\"W001\"),id}function functionparams(options){function addParam(addParamArgs){state.funct[\"(scope)\"].addParam.apply(state.funct[\"(scope)\"],addParamArgs)}var next,ident,t,paramsIds=[],tokens=[],pastDefault=!1,pastRest=!1,arity=0,loneArg=options&&options.loneArg;if(loneArg&&loneArg.identifier===!0)return state.funct[\"(scope)\"].addParam(loneArg.value,loneArg),{arity:1,params:[loneArg.value]};if(next=state.tokens.next,options&&options.parsedOpening||advance(\"(\"),\")\"===state.tokens.next.id)return advance(\")\"),void 0;for(;;){arity++;var currentParams=[];if(_.contains([\"{\",\"[\"],state.tokens.next.id)){tokens=destructuringPattern();for(t in tokens)t=tokens[t],t.id&&(paramsIds.push(t.id),currentParams.push([t.id,t.token]))}else if(checkPunctuator(state.tokens.next,\"...\")&&(pastRest=!0),ident=identifier(!0))paramsIds.push(ident),currentParams.push([ident,state.tokens.curr]);else for(;!checkPunctuators(state.tokens.next,[\",\",\")\"]);)advance();if(pastDefault&&\"=\"!==state.tokens.next.id&&error(\"W138\",state.tokens.current),\"=\"===state.tokens.next.id&&(state.inES6()||warning(\"W119\",state.tokens.next,\"default parameters\",\"6\"),advance(\"=\"),pastDefault=!0,expression(10)),currentParams.forEach(addParam),\",\"!==state.tokens.next.id)return advance(\")\",next),{arity:arity,params:paramsIds};pastRest&&warning(\"W131\",state.tokens.next),comma()}}function functor(name,token,overwrites){var funct={\"(name)\":name,\"(breakage)\":0,\"(loopage)\":0,\"(tokens)\":{},\"(properties)\":{},\"(catch)\":!1,\"(global)\":!1,\"(line)\":null,\"(character)\":null,\"(metrics)\":null,\"(statement)\":null,\"(context)\":null,\"(scope)\":null,\"(comparray)\":null,\"(generator)\":null,\"(arrow)\":null,\"(params)\":null};return token&&_.extend(funct,{\"(line)\":token.line,\"(character)\":token.character,\"(metrics)\":createMetrics(token)}),_.extend(funct,overwrites),funct[\"(context)\"]&&(funct[\"(scope)\"]=funct[\"(context)\"][\"(scope)\"],funct[\"(comparray)\"]=funct[\"(context)\"][\"(comparray)\"]),funct}function isFunctor(token){return\"(scope)\"in token}function hasParsedCode(funct){return funct[\"(global)\"]&&!funct[\"(verb)\"]}function doTemplateLiteral(left){function end(){if(state.tokens.curr.template&&state.tokens.curr.tail&&state.tokens.curr.context===ctx)return!0;var complete=state.tokens.next.template&&state.tokens.next.tail&&state.tokens.next.context===ctx;return complete&&advance(),complete||state.tokens.next.isUnclosed}var ctx=this.context,noSubst=this.noSubst,depth=this.depth;if(!noSubst)for(;!end();)!state.tokens.next.template||state.tokens.next.depth>depth?expression(0):advance();return{id:\"(template)\",type:\"(template)\",tag:left}}function doFunction(options){var f,token,name,statement,classExprBinding,isGenerator,isArrow,ignoreLoopFunc,oldOption=state.option,oldIgnored=state.ignored;options&&(name=options.name,statement=options.statement,classExprBinding=options.classExprBinding,isGenerator=\"generator\"===options.type,isArrow=\"arrow\"===options.type,ignoreLoopFunc=options.ignoreLoopFunc),state.option=Object.create(state.option),state.ignored=Object.create(state.ignored),state.funct=functor(name||state.nameStack.infer(),state.tokens.next,{\"(statement)\":statement,\"(context)\":state.funct,\"(arrow)\":isArrow,\"(generator)\":isGenerator}),f=state.funct,token=state.tokens.curr,token.funct=state.funct,functions.push(state.funct),state.funct[\"(scope)\"].stack(\"functionouter\");var internallyAccessibleName=name||classExprBinding;internallyAccessibleName&&state.funct[\"(scope)\"].block.add(internallyAccessibleName,classExprBinding?\"class\":\"function\",state.tokens.curr,!1),state.funct[\"(scope)\"].stack(\"functionparams\");var paramsInfo=functionparams(options);return paramsInfo?(state.funct[\"(params)\"]=paramsInfo.params,state.funct[\"(metrics)\"].arity=paramsInfo.arity,state.funct[\"(metrics)\"].verifyMaxParametersPerFunction()):state.funct[\"(metrics)\"].arity=0,isArrow&&(state.inES6(!0)||warning(\"W119\",state.tokens.curr,\"arrow function syntax (=>)\",\"6\"),options.loneArg||advance(\"=>\")),block(!1,!0,!0,isArrow),!state.option.noyield&&isGenerator&&\"yielded\"!==state.funct[\"(generator)\"]&&warning(\"W124\",state.tokens.curr),state.funct[\"(metrics)\"].verifyMaxStatementsPerFunction(),state.funct[\"(metrics)\"].verifyMaxComplexityPerFunction(),state.funct[\"(unusedOption)\"]=state.option.unused,state.option=oldOption,state.ignored=oldIgnored,state.funct[\"(last)\"]=state.tokens.curr.line,state.funct[\"(lastcharacter)\"]=state.tokens.curr.character,state.funct[\"(scope)\"].unstack(),state.funct[\"(scope)\"].unstack(),state.funct=state.funct[\"(context)\"],ignoreLoopFunc||state.option.loopfunc||!state.funct[\"(loopage)\"]||f[\"(isCapturing)\"]&&warning(\"W083\",token),f}function createMetrics(functionStartToken){return{statementCount:0,nestedBlockDepth:-1,ComplexityCount:1,arity:0,verifyMaxStatementsPerFunction:function(){state.option.maxstatements&&this.statementCount>state.option.maxstatements&&warning(\"W071\",functionStartToken,this.statementCount)\n},verifyMaxParametersPerFunction:function(){_.isNumber(state.option.maxparams)&&this.arity>state.option.maxparams&&warning(\"W072\",functionStartToken,this.arity)},verifyMaxNestedBlockDepthPerFunction:function(){state.option.maxdepth&&this.nestedBlockDepth>0&&this.nestedBlockDepth===state.option.maxdepth+1&&warning(\"W073\",null,this.nestedBlockDepth)},verifyMaxComplexityPerFunction:function(){var max=state.option.maxcomplexity,cc=this.ComplexityCount;max&&cc>max&&warning(\"W074\",functionStartToken,cc)}}}function increaseComplexityCount(){state.funct[\"(metrics)\"].ComplexityCount+=1}function checkCondAssignment(expr){var id,paren;switch(expr&&(id=expr.id,paren=expr.paren,\",\"===id&&(expr=expr.exprs[expr.exprs.length-1])&&(id=expr.id,paren=paren||expr.paren)),id){case\"=\":case\"+=\":case\"-=\":case\"*=\":case\"%=\":case\"&=\":case\"|=\":case\"^=\":case\"/=\":paren||state.option.boss||warning(\"W084\")}}function checkProperties(props){if(state.inES5())for(var name in props)props[name]&&props[name].setterToken&&!props[name].getterToken&&warning(\"W078\",props[name].setterToken)}function metaProperty(name,c){if(checkPunctuator(state.tokens.next,\".\")){var left=state.tokens.curr.id;advance(\".\");var id=identifier();return state.tokens.curr.isMetaProperty=!0,name!==id?error(\"E057\",state.tokens.prev,left,id):c(),state.tokens.curr}}function destructuringPattern(options){var isAssignment=options&&options.assignment;return state.inES6()||warning(\"W104\",state.tokens.curr,isAssignment?\"destructuring assignment\":\"destructuring binding\",\"6\"),destructuringPatternRecursive(options)}function destructuringPatternRecursive(options){var ids,identifiers=[],openingParsed=options&&options.openingParsed,isAssignment=options&&options.assignment,recursiveOptions=isAssignment?{assignment:isAssignment}:null,firstToken=openingParsed?state.tokens.curr:state.tokens.next,nextInnerDE=function(){var ident;if(checkPunctuators(state.tokens.next,[\"[\",\"{\"])){ids=destructuringPatternRecursive(recursiveOptions);for(var id in ids)id=ids[id],identifiers.push({id:id.id,token:id.token})}else if(checkPunctuator(state.tokens.next,\",\"))identifiers.push({id:null,token:state.tokens.curr});else{if(!checkPunctuator(state.tokens.next,\"(\")){var is_rest=checkPunctuator(state.tokens.next,\"...\");if(isAssignment){var identifierToken=is_rest?peek(0):state.tokens.next;identifierToken.identifier||warning(\"E030\",identifierToken,identifierToken.value);var assignTarget=expression(155);assignTarget&&(checkLeftSideAssign(assignTarget),assignTarget.identifier&&(ident=assignTarget.value))}else ident=identifier();return ident&&identifiers.push({id:ident,token:state.tokens.curr}),is_rest}advance(\"(\"),nextInnerDE(),advance(\")\")}return!1},assignmentProperty=function(){var id;checkPunctuator(state.tokens.next,\"[\")?(advance(\"[\"),expression(10),advance(\"]\"),advance(\":\"),nextInnerDE()):\"(string)\"===state.tokens.next.id||\"(number)\"===state.tokens.next.id?(advance(),advance(\":\"),nextInnerDE()):(id=identifier(),checkPunctuator(state.tokens.next,\":\")?(advance(\":\"),nextInnerDE()):id&&(isAssignment&&checkLeftSideAssign(state.tokens.curr),identifiers.push({id:id,token:state.tokens.curr})))};if(checkPunctuator(firstToken,\"[\")){openingParsed||advance(\"[\"),checkPunctuator(state.tokens.next,\"]\")&&warning(\"W137\",state.tokens.curr);for(var element_after_rest=!1;!checkPunctuator(state.tokens.next,\"]\");)nextInnerDE()&&!element_after_rest&&checkPunctuator(state.tokens.next,\",\")&&(warning(\"W130\",state.tokens.next),element_after_rest=!0),checkPunctuator(state.tokens.next,\"=\")&&(checkPunctuator(state.tokens.prev,\"...\")?advance(\"]\"):advance(\"=\"),\"undefined\"===state.tokens.next.id&&warning(\"W080\",state.tokens.prev,state.tokens.prev.value),expression(10)),checkPunctuator(state.tokens.next,\"]\")||advance(\",\");advance(\"]\")}else if(checkPunctuator(firstToken,\"{\")){for(openingParsed||advance(\"{\"),checkPunctuator(state.tokens.next,\"}\")&&warning(\"W137\",state.tokens.curr);!checkPunctuator(state.tokens.next,\"}\")&&(assignmentProperty(),checkPunctuator(state.tokens.next,\"=\")&&(advance(\"=\"),\"undefined\"===state.tokens.next.id&&warning(\"W080\",state.tokens.prev,state.tokens.prev.value),expression(10)),checkPunctuator(state.tokens.next,\"}\")||(advance(\",\"),!checkPunctuator(state.tokens.next,\"}\"))););advance(\"}\")}return identifiers}function destructuringPatternMatch(tokens,value){var first=value.first;first&&_.zip(tokens,Array.isArray(first)?first:[first]).forEach(function(val){var token=val[0],value=val[1];token&&value?token.first=value:token&&token.first&&!value&&warning(\"W080\",token.first,token.first.value)})}function blockVariableStatement(type,statement,context){var tokens,lone,value,letblock,prefix=context&&context.prefix,inexport=context&&context.inexport,isLet=\"let\"===type,isConst=\"const\"===type;for(state.inES6()||warning(\"W104\",state.tokens.curr,type,\"6\"),isLet&&\"(\"===state.tokens.next.value?(state.inMoz()||warning(\"W118\",state.tokens.next,\"let block\"),advance(\"(\"),state.funct[\"(scope)\"].stack(),letblock=!0):state.funct[\"(noblockscopedvar)\"]&&error(\"E048\",state.tokens.curr,isConst?\"Const\":\"Let\"),statement.first=[];;){var names=[];_.contains([\"{\",\"[\"],state.tokens.next.value)?(tokens=destructuringPattern(),lone=!1):(tokens=[{id:identifier(),token:state.tokens.curr}],lone=!0),!prefix&&isConst&&\"=\"!==state.tokens.next.id&&warning(\"E012\",state.tokens.curr,state.tokens.curr.value);for(var t in tokens)tokens.hasOwnProperty(t)&&(t=tokens[t],state.funct[\"(scope)\"].block.isGlobal()&&predefined[t.id]===!1&&warning(\"W079\",t.token,t.id),t.id&&!state.funct[\"(noblockscopedvar)\"]&&(state.funct[\"(scope)\"].addlabel(t.id,{type:type,token:t.token}),names.push(t.token),lone&&inexport&&state.funct[\"(scope)\"].setExported(t.token.value,t.token)));if(\"=\"===state.tokens.next.id&&(advance(\"=\"),prefix||\"undefined\"!==state.tokens.next.id||warning(\"W080\",state.tokens.prev,state.tokens.prev.value),!prefix&&\"=\"===peek(0).id&&state.tokens.next.identifier&&warning(\"W120\",state.tokens.next,state.tokens.next.value),value=expression(prefix?120:10),lone?tokens[0].first=value:destructuringPatternMatch(names,value)),statement.first=statement.first.concat(names),\",\"!==state.tokens.next.id)break;comma()}return letblock&&(advance(\")\"),block(!0,!0),statement.block=!0,state.funct[\"(scope)\"].unstack()),statement}function classdef(isStatement){return state.inES6()||warning(\"W104\",state.tokens.curr,\"class\",\"6\"),isStatement?(this.name=identifier(),state.funct[\"(scope)\"].addlabel(this.name,{type:\"class\",token:state.tokens.curr})):state.tokens.next.identifier&&\"extends\"!==state.tokens.next.value?(this.name=identifier(),this.namedExpr=!0):this.name=state.nameStack.infer(),classtail(this),this}function classtail(c){var wasInClassBody=state.inClassBody;\"extends\"===state.tokens.next.value&&(advance(\"extends\"),c.heritage=expression(10)),state.inClassBody=!0,advance(\"{\"),c.body=classbody(c),advance(\"}\"),state.inClassBody=wasInClassBody}function classbody(c){for(var name,isStatic,isGenerator,getset,computed,props=Object.create(null),staticProps=Object.create(null),i=0;\"}\"!==state.tokens.next.id;++i)if(name=state.tokens.next,isStatic=!1,isGenerator=!1,getset=null,\";\"!==name.id){if(\"*\"===name.id&&(isGenerator=!0,advance(\"*\"),name=state.tokens.next),\"[\"===name.id)name=computedPropertyName(),computed=!0;else{if(!isPropertyName(name)){warning(\"W052\",state.tokens.next,state.tokens.next.value||state.tokens.next.type),advance();continue}advance(),computed=!1,name.identifier&&\"static\"===name.value&&(checkPunctuator(state.tokens.next,\"*\")&&(isGenerator=!0,advance(\"*\")),(isPropertyName(state.tokens.next)||\"[\"===state.tokens.next.id)&&(computed=\"[\"===state.tokens.next.id,isStatic=!0,name=state.tokens.next,\"[\"===state.tokens.next.id?name=computedPropertyName():advance())),!name.identifier||\"get\"!==name.value&&\"set\"!==name.value||(isPropertyName(state.tokens.next)||\"[\"===state.tokens.next.id)&&(computed=\"[\"===state.tokens.next.id,getset=name,name=state.tokens.next,\"[\"===state.tokens.next.id?name=computedPropertyName():advance())}if(!checkPunctuator(state.tokens.next,\"(\")){for(error(\"E054\",state.tokens.next,state.tokens.next.value);\"}\"!==state.tokens.next.id&&!checkPunctuator(state.tokens.next,\"(\");)advance();\"(\"!==state.tokens.next.value&&doFunction({statement:c})}if(computed||(getset?saveAccessor(getset.value,isStatic?staticProps:props,name.value,name,!0,isStatic):(\"constructor\"===name.value?state.nameStack.set(c):state.nameStack.set(name),saveProperty(isStatic?staticProps:props,name.value,name,!0,isStatic))),getset&&\"constructor\"===name.value){var propDesc=\"get\"===getset.value?\"class getter method\":\"class setter method\";error(\"E049\",name,propDesc,\"constructor\")}else\"prototype\"===name.value&&error(\"E049\",name,\"class method\",\"prototype\");propertyName(name),doFunction({statement:c,type:isGenerator?\"generator\":null,classExprBinding:c.namedExpr?c.name:null})}else warning(\"W032\"),advance(\";\");checkProperties(props)}function saveProperty(props,name,tkn,isClass,isStatic){var msg=[\"key\",\"class method\",\"static class method\"];msg=msg[(isClass||!1)+(isStatic||!1)],tkn.identifier&&(name=tkn.value),props[name]&&\"__proto__\"!==name?warning(\"W075\",state.tokens.next,msg,name):props[name]=Object.create(null),props[name].basic=!0,props[name].basictkn=tkn}function saveAccessor(accessorType,props,name,tkn,isClass,isStatic){var flagName=\"get\"===accessorType?\"getterToken\":\"setterToken\",msg=\"\";isClass?(isStatic&&(msg+=\"static \"),msg+=accessorType+\"ter method\"):msg=\"key\",state.tokens.curr.accessorType=accessorType,state.nameStack.set(tkn),props[name]?(props[name].basic||props[name][flagName])&&\"__proto__\"!==name&&warning(\"W075\",state.tokens.next,msg,name):props[name]=Object.create(null),props[name][flagName]=tkn}function computedPropertyName(){advance(\"[\"),state.inES6()||warning(\"W119\",state.tokens.curr,\"computed property names\",\"6\");var value=expression(10);return advance(\"]\"),value}function checkPunctuators(token,values){return\"(punctuator)\"===token.type?_.contains(values,token.value):!1}function checkPunctuator(token,value){return\"(punctuator)\"===token.type&&token.value===value}function destructuringAssignOrJsonValue(){var block=lookupBlockType();block.notJson?(!state.inES6()&&block.isDestAssign&&warning(\"W104\",state.tokens.curr,\"destructuring assignment\",\"6\"),statements()):(state.option.laxbreak=!0,state.jsonMode=!0,jsonValue())}function jsonValue(){function jsonObject(){var o={},t=state.tokens.next;if(advance(\"{\"),\"}\"!==state.tokens.next.id)for(;;){if(\"(end)\"===state.tokens.next.id)error(\"E026\",state.tokens.next,t.line);else{if(\"}\"===state.tokens.next.id){warning(\"W094\",state.tokens.curr);break}\",\"===state.tokens.next.id?error(\"E028\",state.tokens.next):\"(string)\"!==state.tokens.next.id&&warning(\"W095\",state.tokens.next,state.tokens.next.value)}if(o[state.tokens.next.value]===!0?warning(\"W075\",state.tokens.next,\"key\",state.tokens.next.value):\"__proto__\"===state.tokens.next.value&&!state.option.proto||\"__iterator__\"===state.tokens.next.value&&!state.option.iterator?warning(\"W096\",state.tokens.next,state.tokens.next.value):o[state.tokens.next.value]=!0,advance(),advance(\":\"),jsonValue(),\",\"!==state.tokens.next.id)break;advance(\",\")}advance(\"}\")}function jsonArray(){var t=state.tokens.next;if(advance(\"[\"),\"]\"!==state.tokens.next.id)for(;;){if(\"(end)\"===state.tokens.next.id)error(\"E027\",state.tokens.next,t.line);else{if(\"]\"===state.tokens.next.id){warning(\"W094\",state.tokens.curr);break}\",\"===state.tokens.next.id&&error(\"E028\",state.tokens.next)}if(jsonValue(),\",\"!==state.tokens.next.id)break;advance(\",\")}advance(\"]\")}switch(state.tokens.next.id){case\"{\":jsonObject();break;case\"[\":jsonArray();break;case\"true\":case\"false\":case\"null\":case\"(number)\":case\"(string)\":advance();break;case\"-\":advance(\"-\"),advance(\"(number)\");break;default:error(\"E003\",state.tokens.next)}}var api,declared,functions,inblock,indent,lookahead,lex,member,membersOnly,predefined,stack,urls,bang={\"<\":!0,\"<=\":!0,\"==\":!0,\"===\":!0,\"!==\":!0,\"!=\":!0,\">\":!0,\">=\":!0,\"+\":!0,\"-\":!0,\"*\":!0,\"/\":!0,\"%\":!0},functionicity=[\"closure\",\"exception\",\"global\",\"label\",\"outer\",\"unused\",\"var\"],extraModules=[],emitter=new events.EventEmitter,typeofValues={};typeofValues.legacy=[\"xml\",\"unknown\"],typeofValues.es3=[\"undefined\",\"boolean\",\"number\",\"string\",\"function\",\"object\"],typeofValues.es3=typeofValues.es3.concat(typeofValues.legacy),typeofValues.es6=typeofValues.es3.concat(\"symbol\"),type(\"(number)\",function(){return this}),type(\"(string)\",function(){return this}),state.syntax[\"(identifier)\"]={type:\"(identifier)\",lbp:0,identifier:!0,nud:function(){var v=this.value;return\"=>\"===state.tokens.next.id?this:(state.funct[\"(comparray)\"].check(v)||state.funct[\"(scope)\"].block.use(v,state.tokens.curr),this)},led:function(){error(\"E033\",state.tokens.next,state.tokens.next.value)}};var baseTemplateSyntax={lbp:0,identifier:!1,template:!0};state.syntax[\"(template)\"]=_.extend({type:\"(template)\",nud:doTemplateLiteral,led:doTemplateLiteral,noSubst:!1},baseTemplateSyntax),state.syntax[\"(template middle)\"]=_.extend({type:\"(template middle)\",middle:!0,noSubst:!1},baseTemplateSyntax),state.syntax[\"(template tail)\"]=_.extend({type:\"(template tail)\",tail:!0,noSubst:!1},baseTemplateSyntax),state.syntax[\"(no subst template)\"]=_.extend({type:\"(template)\",nud:doTemplateLiteral,led:doTemplateLiteral,noSubst:!0,tail:!0},baseTemplateSyntax),type(\"(regexp)\",function(){return 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expr;if(that.exprs=[left],state.option.nocomma&&warning(\"W127\"),!comma({peek:!0}))return that;for(;;){if(!(expr=expression(10)))break;if(that.exprs.push(expr),\",\"!==state.tokens.next.value||!comma())break}return that},10,!0),infix(\"?\",function(left,that){return increaseComplexityCount(),that.left=left,that.right=expression(10),advance(\":\"),that[\"else\"]=expression(10),that},30);var orPrecendence=40;infix(\"||\",function(left,that){return increaseComplexityCount(),that.left=left,that.right=expression(orPrecendence),that},orPrecendence),infix(\"&&\",\"and\",50),bitwise(\"|\",\"bitor\",70),bitwise(\"^\",\"bitxor\",80),bitwise(\"&\",\"bitand\",90),relation(\"==\",function(left,right){var eqnull=state.option.eqnull&&(\"null\"===(left&&left.value)||\"null\"===(right&&right.value));switch(!0){case!eqnull&&state.option.eqeqeq:this.from=this.character,warning(\"W116\",this,\"===\",\"==\");break;case isPoorRelation(left):warning(\"W041\",this,\"===\",left.value);break;case isPoorRelation(right):warning(\"W041\",this,\"===\",right.value);break;case isTypoTypeof(right,left,state):warning(\"W122\",this,right.value);break;case isTypoTypeof(left,right,state):warning(\"W122\",this,left.value)}return this}),relation(\"===\",function(left,right){return isTypoTypeof(right,left,state)?warning(\"W122\",this,right.value):isTypoTypeof(left,right,state)&&warning(\"W122\",this,left.value),this}),relation(\"!=\",function(left,right){var eqnull=state.option.eqnull&&(\"null\"===(left&&left.value)||\"null\"===(right&&right.value));return!eqnull&&state.option.eqeqeq?(this.from=this.character,warning(\"W116\",this,\"!==\",\"!=\")):isPoorRelation(left)?warning(\"W041\",this,\"!==\",left.value):isPoorRelation(right)?warning(\"W041\",this,\"!==\",right.value):isTypoTypeof(right,left,state)?warning(\"W122\",this,right.value):isTypoTypeof(left,right,state)&&warning(\"W122\",this,left.value),this}),relation(\"!==\",function(left,right){return isTypoTypeof(right,left,state)?warning(\"W122\",this,right.value):isTypoTypeof(left,right,state)&&warning(\"W122\",this,left.value),this}),relation(\"<\"),relation(\">\"),relation(\"<=\"),relation(\">=\"),bitwise(\"<<\",\"shiftleft\",120),bitwise(\">>\",\"shiftright\",120),bitwise(\">>>\",\"shiftrightunsigned\",120),infix(\"in\",\"in\",120),infix(\"instanceof\",\"instanceof\",120),infix(\"+\",function(left,that){var right;return that.left=left,that.right=right=expression(130),left&&right&&\"(string)\"===left.id&&\"(string)\"===right.id?(left.value+=right.value,left.character=right.character,!state.option.scripturl&&reg.javascriptURL.test(left.value)&&warning(\"W050\",left),left):that},130),prefix(\"+\",\"num\"),prefix(\"+++\",function(){return warning(\"W007\"),this.arity=\"unary\",this.right=expression(150),this}),infix(\"+++\",function(left){return warning(\"W007\"),this.left=left,this.right=expression(130),this},130),infix(\"-\",\"sub\",130),prefix(\"-\",\"neg\"),prefix(\"---\",function(){return warning(\"W006\"),this.arity=\"unary\",this.right=expression(150),this}),infix(\"---\",function(left){return warning(\"W006\"),this.left=left,this.right=expression(130),this},130),infix(\"*\",\"mult\",140),infix(\"/\",\"div\",140),infix(\"%\",\"mod\",140),suffix(\"++\"),prefix(\"++\",\"preinc\"),state.syntax[\"++\"].exps=!0,suffix(\"--\"),prefix(\"--\",\"predec\"),state.syntax[\"--\"].exps=!0,prefix(\"delete\",function(){var p=expression(10);return p?(\".\"!==p.id&&\"[\"!==p.id&&warning(\"W051\"),this.first=p,p.identifier&&!state.isStrict()&&(p.forgiveUndef=!0),this):this}).exps=!0,prefix(\"~\",function(){return state.option.bitwise&&warning(\"W016\",this,\"~\"),this.arity=\"unary\",this.right=expression(150),this}),prefix(\"...\",function(){return state.inES6(!0)||warning(\"W119\",this,\"spread/rest operator\",\"6\"),state.tokens.next.identifier||\"(string)\"===state.tokens.next.type||checkPunctuators(state.tokens.next,[\"[\",\"(\"])||error(\"E030\",state.tokens.next,state.tokens.next.value),expression(150),this}),prefix(\"!\",function(){return this.arity=\"unary\",this.right=expression(150),this.right||quit(\"E041\",this.line||0),bang[this.right.id]===!0&&warning(\"W018\",this,\"!\"),this}),prefix(\"typeof\",function(){var p=expression(150);return this.first=this.right=p,p||quit(\"E041\",this.line||0,this.character||0),p.identifier&&(p.forgiveUndef=!0),this}),prefix(\"new\",function(){var mp=metaProperty(\"target\",function(){state.inES6(!0)||warning(\"W119\",state.tokens.prev,\"new.target\",\"6\");for(var inFunction,c=state.funct;c&&(inFunction=!c[\"(global)\"],c[\"(arrow)\"]);)c=c[\"(context)\"];inFunction||warning(\"W136\",state.tokens.prev,\"new.target\")});if(mp)return mp;var i,c=expression(155);if(c&&\"function\"!==c.id)if(c.identifier)switch(c[\"new\"]=!0,c.value){case\"Number\":case\"String\":case\"Boolean\":case\"Math\":case\"JSON\":warning(\"W053\",state.tokens.prev,c.value);break;case\"Symbol\":state.inES6()&&warning(\"W053\",state.tokens.prev,c.value);break;case\"Function\":state.option.evil||warning(\"W054\");break;case\"Date\":case\"RegExp\":case\"this\":break;default:\"function\"!==c.id&&(i=c.value.substr(0,1),state.option.newcap&&(\"A\">i||i>\"Z\")&&!state.funct[\"(scope)\"].isPredefined(c.value)&&warning(\"W055\",state.tokens.curr))}else\".\"!==c.id&&\"[\"!==c.id&&\"(\"!==c.id&&warning(\"W056\",state.tokens.curr);else state.option.supernew||warning(\"W057\",this);return\"(\"===state.tokens.next.id||state.option.supernew||warning(\"W058\",state.tokens.curr,state.tokens.curr.value),this.first=this.right=c,this}),state.syntax[\"new\"].exps=!0,prefix(\"void\").exps=!0,infix(\".\",function(left,that){var m=identifier(!1,!0);return\"string\"==typeof m&&countMember(m),that.left=left,that.right=m,m&&\"hasOwnProperty\"===m&&\"=\"===state.tokens.next.value&&warning(\"W001\"),!left||\"arguments\"!==left.value||\"callee\"!==m&&\"caller\"!==m?state.option.evil||!left||\"document\"!==left.value||\"write\"!==m&&\"writeln\"!==m||warning(\"W060\",left):state.option.noarg?warning(\"W059\",left,m):state.isStrict()&&error(\"E008\"),state.option.evil||\"eval\"!==m&&\"execScript\"!==m||isGlobalEval(left,state)&&warning(\"W061\"),that},160,!0),infix(\"(\",function(left,that){state.option.immed&&left&&!left.immed&&\"function\"===left.id&&warning(\"W062\");var n=0,p=[];if(left&&\"(identifier)\"===left.type&&left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)&&-1===\"Array Number String Boolean Date Object Error Symbol\".indexOf(left.value)&&(\"Math\"===left.value?warning(\"W063\",left):state.option.newcap&&warning(\"W064\",left)),\")\"!==state.tokens.next.id)for(;p[p.length]=expression(10),n+=1,\",\"===state.tokens.next.id;)comma();return advance(\")\"),\"object\"==typeof left&&(state.inES5()||\"parseInt\"!==left.value||1!==n||warning(\"W065\",state.tokens.curr),state.option.evil||(\"eval\"===left.value||\"Function\"===left.value||\"execScript\"===left.value?(warning(\"W061\",left),p[0]&&\"(string)\"===[0].id&&addInternalSrc(left,p[0].value)):!p[0]||\"(string)\"!==p[0].id||\"setTimeout\"!==left.value&&\"setInterval\"!==left.value?!p[0]||\"(string)\"!==p[0].id||\".\"!==left.value||\"window\"!==left.left.value||\"setTimeout\"!==left.right&&\"setInterval\"!==left.right||(warning(\"W066\",left),addInternalSrc(left,p[0].value)):(warning(\"W066\",left),addInternalSrc(left,p[0].value))),left.identifier||\".\"===left.id||\"[\"===left.id||\"=>\"===left.id||\"(\"===left.id||\"&&\"===left.id||\"||\"===left.id||\"?\"===left.id||state.inES6()&&left[\"(name)\"]||warning(\"W067\",that)),that.left=left,that},155,!0).exps=!0,prefix(\"(\",function(){var pn1,ret,triggerFnExpr,first,last,pn=state.tokens.next,i=-1,parens=1,opening=state.tokens.curr,preceeding=state.tokens.prev,isNecessary=!state.option.singleGroups;do\"(\"===pn.value?parens+=1:\")\"===pn.value&&(parens-=1),i+=1,pn1=pn,pn=peek(i);while((0!==parens||\")\"!==pn1.value)&&\";\"!==pn.value&&\"(end)\"!==pn.type);if(\"function\"===state.tokens.next.id&&(triggerFnExpr=state.tokens.next.immed=!0),\"=>\"===pn.value)return doFunction({type:\"arrow\",parsedOpening:!0});var exprs=[];if(\")\"!==state.tokens.next.id)for(;exprs.push(expression(10)),\",\"===state.tokens.next.id;)state.option.nocomma&&warning(\"W127\"),comma();return advance(\")\",this),state.option.immed&&exprs[0]&&\"function\"===exprs[0].id&&\"(\"!==state.tokens.next.id&&\".\"!==state.tokens.next.id&&\"[\"!==state.tokens.next.id&&warning(\"W068\",this),exprs.length?(exprs.length>1?(ret=Object.create(state.syntax[\",\"]),ret.exprs=exprs,first=exprs[0],last=exprs[exprs.length-1],isNecessary||(isNecessary=preceeding.assign||preceeding.delim)):(ret=first=last=exprs[0],isNecessary||(isNecessary=opening.beginsStmt&&(\"{\"===ret.id||triggerFnExpr||isFunctor(ret))||triggerFnExpr&&(!isEndOfExpr()||\"}\"!==state.tokens.prev.id)||isFunctor(ret)&&!isEndOfExpr()||\"{\"===ret.id&&\"=>\"===preceeding.id||\"(number)\"===ret.type&&checkPunctuator(pn,\".\")&&/^\\d+$/.test(ret.value))),ret&&(!isNecessary&&(first.left||first.right||ret.exprs)&&(isNecessary=!isBeginOfExpr(preceeding)&&first.lbp<=preceeding.lbp||!isEndOfExpr()&&last.lbp<state.tokens.next.lbp),isNecessary||warning(\"W126\",opening),ret.paren=!0),ret):void 0}),application(\"=>\"),infix(\"[\",function(left,that){var s,e=expression(10);return e&&\"(string)\"===e.type&&(state.option.evil||\"eval\"!==e.value&&\"execScript\"!==e.value||isGlobalEval(left,state)&&warning(\"W061\"),countMember(e.value),!state.option.sub&&reg.identifier.test(e.value)&&(s=state.syntax[e.value],s&&isReserved(s)||warning(\"W069\",state.tokens.prev,e.value))),advance(\"]\",that),e&&\"hasOwnProperty\"===e.value&&\"=\"===state.tokens.next.value&&warning(\"W001\"),that.left=left,that.right=e,that},160,!0),prefix(\"[\",function(){var blocktype=lookupBlockType();if(blocktype.isCompArray)return state.option.esnext||state.inMoz()||warning(\"W118\",state.tokens.curr,\"array comprehension\"),comprehensiveArrayExpression();if(blocktype.isDestAssign)return this.destructAssign=destructuringPattern({openingParsed:!0,assignment:!0}),this;var b=state.tokens.curr.line!==startLine(state.tokens.next);for(this.first=[],b&&(indent+=state.option.indent,state.tokens.next.from===indent+state.option.indent&&(indent+=state.option.indent));\"(end)\"!==state.tokens.next.id;){for(;\",\"===state.tokens.next.id;){if(!state.option.elision){if(state.inES5()){warning(\"W128\");do advance(\",\");while(\",\"===state.tokens.next.id);continue}warning(\"W070\")}advance(\",\")}if(\"]\"===state.tokens.next.id)break;if(this.first.push(expression(10)),\",\"!==state.tokens.next.id)break;if(comma({allowTrailing:!0}),\"]\"===state.tokens.next.id&&!state.inES5()){warning(\"W070\",state.tokens.curr);break}}return b&&(indent-=state.option.indent),advance(\"]\",this),this}),function(x){x.nud=function(){var b,f,i,p,t,nextVal,isGeneratorMethod=!1,props=Object.create(null);b=state.tokens.curr.line!==startLine(state.tokens.next),b&&(indent+=state.option.indent,state.tokens.next.from===indent+state.option.indent&&(indent+=state.option.indent));var blocktype=lookupBlockType();if(blocktype.isDestAssign)return this.destructAssign=destructuringPattern({openingParsed:!0,assignment:!0}),this;for(;\"}\"!==state.tokens.next.id;){if(nextVal=state.tokens.next.value,!state.tokens.next.identifier||\",\"!==peekIgnoreEOL().id&&\"}\"!==peekIgnoreEOL().id)if(\":\"===peek().id||\"get\"!==nextVal&&\"set\"!==nextVal){if(\"*\"===state.tokens.next.value&&\"(punctuator)\"===state.tokens.next.type?(state.inES6()||warning(\"W104\",state.tokens.next,\"generator functions\",\"6\"),advance(\"*\"),isGeneratorMethod=!0):isGeneratorMethod=!1,\"[\"===state.tokens.next.id)i=computedPropertyName(),state.nameStack.set(i);else if(state.nameStack.set(state.tokens.next),i=propertyName(),saveProperty(props,i,state.tokens.next),\"string\"!=typeof i)break;\"(\"===state.tokens.next.value?(state.inES6()||warning(\"W104\",state.tokens.curr,\"concise methods\",\"6\"),doFunction({type:isGeneratorMethod?\"generator\":null})):(advance(\":\"),expression(10))}else advance(nextVal),state.inES5()||error(\"E034\"),i=propertyName(),i||state.inES6()||error(\"E035\"),i&&saveAccessor(nextVal,props,i,state.tokens.curr),t=state.tokens.next,f=doFunction(),p=f[\"(params)\"],\"get\"===nextVal&&i&&p?warning(\"W076\",t,p[0],i):\"set\"!==nextVal||!i||p&&1===p.length||warning(\"W077\",t,i);else state.inES6()||warning(\"W104\",state.tokens.next,\"object short notation\",\"6\"),i=propertyName(!0),saveProperty(props,i,state.tokens.next),expression(10);if(countMember(i),\",\"!==state.tokens.next.id)break;comma({allowTrailing:!0,property:!0}),\",\"===state.tokens.next.id?warning(\"W070\",state.tokens.curr):\"}\"!==state.tokens.next.id||state.inES5()||warning(\"W070\",state.tokens.curr)}return b&&(indent-=state.option.indent),advance(\"}\",this),checkProperties(props),this},x.fud=function(){error(\"E036\",state.tokens.curr)}}(delim(\"{\"));var conststatement=stmt(\"const\",function(context){return blockVariableStatement(\"const\",this,context)});conststatement.exps=!0;var letstatement=stmt(\"let\",function(context){return blockVariableStatement(\"let\",this,context)});letstatement.exps=!0;var varstatement=stmt(\"var\",function(context){var tokens,lone,value,prefix=context&&context.prefix,inexport=context&&context.inexport,implied=context&&context.implied,report=!(context&&context.ignore);for(this.first=[];;){var names=[];_.contains([\"{\",\"[\"],state.tokens.next.value)?(tokens=destructuringPattern(),lone=!1):(tokens=[{id:identifier(),token:state.tokens.curr}],lone=!0),prefix&&implied||!report||!state.option.varstmt||warning(\"W132\",this),this.first=this.first.concat(names);for(var t in tokens)tokens.hasOwnProperty(t)&&(t=tokens[t],!implied&&state.funct[\"(global)\"]&&(predefined[t.id]===!1?warning(\"W079\",t.token,t.id):state.option.futurehostile===!1&&(!state.inES5()&&vars.ecmaIdentifiers[5][t.id]===!1||!state.inES6()&&vars.ecmaIdentifiers[6][t.id]===!1)&&warning(\"W129\",t.token,t.id)),t.id&&(\"for\"===implied?(state.funct[\"(scope)\"].has(t.id)||report&&warning(\"W088\",t.token,t.id),state.funct[\"(scope)\"].block.use(t.id,t.token)):(state.funct[\"(scope)\"].addlabel(t.id,{type:\"var\",token:t.token}),lone&&inexport&&state.funct[\"(scope)\"].setExported(t.id,t.token)),names.push(t.token)));if(\"=\"===state.tokens.next.id&&(state.nameStack.set(state.tokens.curr),advance(\"=\"),prefix||!report||state.funct[\"(loopage)\"]||\"undefined\"!==state.tokens.next.id||warning(\"W080\",state.tokens.prev,state.tokens.prev.value),\"=\"===peek(0).id&&state.tokens.next.identifier&&(!prefix&&report&&!state.funct[\"(params)\"]||-1===state.funct[\"(params)\"].indexOf(state.tokens.next.value))&&warning(\"W120\",state.tokens.next,state.tokens.next.value),value=expression(prefix?120:10),lone?tokens[0].first=value:destructuringPatternMatch(names,value)),\",\"!==state.tokens.next.id)break;comma()}return this});varstatement.exps=!0,blockstmt(\"class\",function(){return classdef.call(this,!0)}),blockstmt(\"function\",function(context){var inexport=context&&context.inexport,generator=!1;\"*\"===state.tokens.next.value&&(advance(\"*\"),state.inES6({strict:!0})?generator=!0:warning(\"W119\",state.tokens.curr,\"function*\",\"6\")),inblock&&warning(\"W082\",state.tokens.curr);var i=optionalidentifier();return state.funct[\"(scope)\"].addlabel(i,{type:\"function\",token:state.tokens.curr}),void 0===i?warning(\"W025\"):inexport&&state.funct[\"(scope)\"].setExported(i,state.tokens.prev),doFunction({name:i,statement:this,type:generator?\"generator\":null,ignoreLoopFunc:inblock}),\"(\"===state.tokens.next.id&&state.tokens.next.line===state.tokens.curr.line&&error(\"E039\"),this}),prefix(\"function\",function(){var generator=!1;\"*\"===state.tokens.next.value&&(state.inES6()||warning(\"W119\",state.tokens.curr,\"function*\",\"6\"),advance(\"*\"),generator=!0);var i=optionalidentifier();return doFunction({name:i,type:generator?\"generator\":null}),this}),blockstmt(\"if\",function(){var t=state.tokens.next;increaseComplexityCount(),state.condition=!0,advance(\"(\");var expr=expression(0);checkCondAssignment(expr);var forinifcheck=null;state.option.forin&&state.forinifcheckneeded&&(state.forinifcheckneeded=!1,forinifcheck=state.forinifchecks[state.forinifchecks.length-1],forinifcheck.type=\"(punctuator)\"===expr.type&&\"!\"===expr.value?\"(negative)\":\"(positive)\"),advance(\")\",t),state.condition=!1;var s=block(!0,!0);return forinifcheck&&\"(negative)\"===forinifcheck.type&&s&&s[0]&&\"(identifier)\"===s[0].type&&\"continue\"===s[0].value&&(forinifcheck.type=\"(negative-with-continue)\"),\"else\"===state.tokens.next.id&&(advance(\"else\"),\"if\"===state.tokens.next.id||\"switch\"===state.tokens.next.id?statement():block(!0,!0)),this}),blockstmt(\"try\",function(){function doCatch(){if(advance(\"catch\"),advance(\"(\"),state.funct[\"(scope)\"].stack(\"catchparams\"),checkPunctuators(state.tokens.next,[\"[\",\"{\"])){var tokens=destructuringPattern();_.each(tokens,function(token){token.id&&state.funct[\"(scope)\"].addParam(token.id,token,\"exception\")})}else\"(identifier)\"!==state.tokens.next.type?warning(\"E030\",state.tokens.next,state.tokens.next.value):state.funct[\"(scope)\"].addParam(identifier(),state.tokens.curr,\"exception\");\"if\"===state.tokens.next.value&&(state.inMoz()||warning(\"W118\",state.tokens.curr,\"catch filter\"),advance(\"if\"),expression(0)),advance(\")\"),block(!1),state.funct[\"(scope)\"].unstack()}var b;for(block(!0);\"catch\"===state.tokens.next.id;)increaseComplexityCount(),b&&!state.inMoz()&&warning(\"W118\",state.tokens.next,\"multiple catch blocks\"),doCatch(),b=!0;return\"finally\"===state.tokens.next.id?(advance(\"finally\"),block(!0),void 0):(b||error(\"E021\",state.tokens.next,\"catch\",state.tokens.next.value),this)}),blockstmt(\"while\",function(){var t=state.tokens.next;return state.funct[\"(breakage)\"]+=1,state.funct[\"(loopage)\"]+=1,increaseComplexityCount(),advance(\"(\"),checkCondAssignment(expression(0)),advance(\")\",t),block(!0,!0),state.funct[\"(breakage)\"]-=1,state.funct[\"(loopage)\"]-=1,this}).labelled=!0,blockstmt(\"with\",function(){var t=state.tokens.next;return state.isStrict()?error(\"E010\",state.tokens.curr):state.option.withstmt||warning(\"W085\",state.tokens.curr),advance(\"(\"),expression(0),advance(\")\",t),block(!0,!0),this}),blockstmt(\"switch\",function(){var t=state.tokens.next,g=!1,noindent=!1;\nfor(state.funct[\"(breakage)\"]+=1,advance(\"(\"),checkCondAssignment(expression(0)),advance(\")\",t),t=state.tokens.next,advance(\"{\"),state.tokens.next.from===indent&&(noindent=!0),noindent||(indent+=state.option.indent),this.cases=[];;)switch(state.tokens.next.id){case\"case\":switch(state.funct[\"(verb)\"]){case\"yield\":case\"break\":case\"case\":case\"continue\":case\"return\":case\"switch\":case\"throw\":break;default:state.tokens.curr.caseFallsThrough||warning(\"W086\",state.tokens.curr,\"case\")}advance(\"case\"),this.cases.push(expression(0)),increaseComplexityCount(),g=!0,advance(\":\"),state.funct[\"(verb)\"]=\"case\";break;case\"default\":switch(state.funct[\"(verb)\"]){case\"yield\":case\"break\":case\"continue\":case\"return\":case\"throw\":break;default:this.cases.length&&(state.tokens.curr.caseFallsThrough||warning(\"W086\",state.tokens.curr,\"default\"))}advance(\"default\"),g=!0,advance(\":\");break;case\"}\":return noindent||(indent-=state.option.indent),advance(\"}\",t),state.funct[\"(breakage)\"]-=1,state.funct[\"(verb)\"]=void 0,void 0;case\"(end)\":return error(\"E023\",state.tokens.next,\"}\"),void 0;default:if(indent+=state.option.indent,g)switch(state.tokens.curr.id){case\",\":return error(\"E040\"),void 0;case\":\":g=!1,statements();break;default:return error(\"E025\",state.tokens.curr),void 0}else{if(\":\"!==state.tokens.curr.id)return error(\"E021\",state.tokens.next,\"case\",state.tokens.next.value),void 0;advance(\":\"),error(\"E024\",state.tokens.curr,\":\"),statements()}indent-=state.option.indent}return this}).labelled=!0,stmt(\"debugger\",function(){return state.option.debug||warning(\"W087\",this),this}).exps=!0,function(){var x=stmt(\"do\",function(){state.funct[\"(breakage)\"]+=1,state.funct[\"(loopage)\"]+=1,increaseComplexityCount(),this.first=block(!0,!0),advance(\"while\");var t=state.tokens.next;return advance(\"(\"),checkCondAssignment(expression(0)),advance(\")\",t),state.funct[\"(breakage)\"]-=1,state.funct[\"(loopage)\"]-=1,this});x.labelled=!0,x.exps=!0}(),blockstmt(\"for\",function(){var s,t=state.tokens.next,letscope=!1,foreachtok=null;\"each\"===t.value&&(foreachtok=t,advance(\"each\"),state.inMoz()||warning(\"W118\",state.tokens.curr,\"for each\")),increaseComplexityCount(),advance(\"(\");var nextop,comma,initializer,i=0,inof=[\"in\",\"of\"],level=0;checkPunctuators(state.tokens.next,[\"{\",\"[\"])&&++level;do{if(nextop=peek(i),++i,checkPunctuators(nextop,[\"{\",\"[\"])?++level:checkPunctuators(nextop,[\"}\",\"]\"])&&--level,0>level)break;0===level&&(!comma&&checkPunctuator(nextop,\",\")?comma=nextop:!initializer&&checkPunctuator(nextop,\"=\")&&(initializer=nextop))}while(level>0||!_.contains(inof,nextop.value)&&\";\"!==nextop.value&&\"(end)\"!==nextop.type);if(_.contains(inof,nextop.value)){state.inES6()||\"of\"!==nextop.value||warning(\"W104\",nextop,\"for of\",\"6\");var ok=!(initializer||comma);if(initializer&&error(\"W133\",comma,nextop.value,\"initializer is forbidden\"),comma&&error(\"W133\",comma,nextop.value,\"more than one ForBinding\"),\"var\"===state.tokens.next.id?(advance(\"var\"),state.tokens.curr.fud({prefix:!0})):\"let\"===state.tokens.next.id||\"const\"===state.tokens.next.id?(advance(state.tokens.next.id),letscope=!0,state.funct[\"(scope)\"].stack(),state.tokens.curr.fud({prefix:!0})):Object.create(varstatement).fud({prefix:!0,implied:\"for\",ignore:!ok}),advance(nextop.value),expression(20),advance(\")\",t),\"in\"===nextop.value&&state.option.forin&&(state.forinifcheckneeded=!0,void 0===state.forinifchecks&&(state.forinifchecks=[]),state.forinifchecks.push({type:\"(none)\"})),state.funct[\"(breakage)\"]+=1,state.funct[\"(loopage)\"]+=1,s=block(!0,!0),\"in\"===nextop.value&&state.option.forin){if(state.forinifchecks&&state.forinifchecks.length>0){var check=state.forinifchecks.pop();(s&&s.length>0&&(\"object\"!=typeof s[0]||\"if\"!==s[0].value)||\"(positive)\"===check.type&&s.length>1||\"(negative)\"===check.type)&&warning(\"W089\",this)}state.forinifcheckneeded=!1}state.funct[\"(breakage)\"]-=1,state.funct[\"(loopage)\"]-=1}else{if(foreachtok&&error(\"E045\",foreachtok),\";\"!==state.tokens.next.id)if(\"var\"===state.tokens.next.id)advance(\"var\"),state.tokens.curr.fud();else if(\"let\"===state.tokens.next.id)advance(\"let\"),letscope=!0,state.funct[\"(scope)\"].stack(),state.tokens.curr.fud();else for(;expression(0,\"for\"),\",\"===state.tokens.next.id;)comma();if(nolinebreak(state.tokens.curr),advance(\";\"),state.funct[\"(loopage)\"]+=1,\";\"!==state.tokens.next.id&&checkCondAssignment(expression(0)),nolinebreak(state.tokens.curr),advance(\";\"),\";\"===state.tokens.next.id&&error(\"E021\",state.tokens.next,\")\",\";\"),\")\"!==state.tokens.next.id)for(;expression(0,\"for\"),\",\"===state.tokens.next.id;)comma();advance(\")\",t),state.funct[\"(breakage)\"]+=1,block(!0,!0),state.funct[\"(breakage)\"]-=1,state.funct[\"(loopage)\"]-=1}return letscope&&state.funct[\"(scope)\"].unstack(),this}).labelled=!0,stmt(\"break\",function(){var v=state.tokens.next.value;return state.option.asi||nolinebreak(this),\";\"===state.tokens.next.id||state.tokens.next.reach||state.tokens.curr.line!==startLine(state.tokens.next)?0===state.funct[\"(breakage)\"]&&warning(\"W052\",state.tokens.next,this.value):(state.funct[\"(scope)\"].funct.hasBreakLabel(v)||warning(\"W090\",state.tokens.next,v),this.first=state.tokens.next,advance()),reachable(this),this}).exps=!0,stmt(\"continue\",function(){var v=state.tokens.next.value;return 0===state.funct[\"(breakage)\"]&&warning(\"W052\",state.tokens.next,this.value),state.funct[\"(loopage)\"]||warning(\"W052\",state.tokens.next,this.value),state.option.asi||nolinebreak(this),\";\"===state.tokens.next.id||state.tokens.next.reach||state.tokens.curr.line===startLine(state.tokens.next)&&(state.funct[\"(scope)\"].funct.hasBreakLabel(v)||warning(\"W090\",state.tokens.next,v),this.first=state.tokens.next,advance()),reachable(this),this}).exps=!0,stmt(\"return\",function(){return this.line===startLine(state.tokens.next)?\";\"===state.tokens.next.id||state.tokens.next.reach||(this.first=expression(0),!this.first||\"(punctuator)\"!==this.first.type||\"=\"!==this.first.value||this.first.paren||state.option.boss||warningAt(\"W093\",this.first.line,this.first.character)):\"(punctuator)\"===state.tokens.next.type&&[\"[\",\"{\",\"+\",\"-\"].indexOf(state.tokens.next.value)>-1&&nolinebreak(this),reachable(this),this}).exps=!0,function(x){x.exps=!0,x.lbp=25}(prefix(\"yield\",function(){var prev=state.tokens.prev;state.inES6(!0)&&!state.funct[\"(generator)\"]?\"(catch)\"===state.funct[\"(name)\"]&&state.funct[\"(context)\"][\"(generator)\"]||error(\"E046\",state.tokens.curr,\"yield\"):state.inES6()||warning(\"W104\",state.tokens.curr,\"yield\",\"6\"),state.funct[\"(generator)\"]=\"yielded\";var delegatingYield=!1;return\"*\"===state.tokens.next.value&&(delegatingYield=!0,advance(\"*\")),this.line!==startLine(state.tokens.next)&&state.inMoz()?state.option.asi||nolinebreak(this):((delegatingYield||\";\"!==state.tokens.next.id&&!state.option.asi&&!state.tokens.next.reach&&state.tokens.next.nud)&&(nobreaknonadjacent(state.tokens.curr,state.tokens.next),this.first=expression(10),\"(punctuator)\"!==this.first.type||\"=\"!==this.first.value||this.first.paren||state.option.boss||warningAt(\"W093\",this.first.line,this.first.character)),state.inMoz()&&\")\"!==state.tokens.next.id&&(prev.lbp>30||!prev.assign&&!isEndOfExpr()||\"yield\"===prev.id)&&error(\"E050\",this)),this})),stmt(\"throw\",function(){return nolinebreak(this),this.first=expression(20),reachable(this),this}).exps=!0,stmt(\"import\",function(){if(state.inES6()||warning(\"W119\",state.tokens.curr,\"import\",\"6\"),\"(string)\"===state.tokens.next.type)return advance(\"(string)\"),this;if(state.tokens.next.identifier){if(this.name=identifier(),state.funct[\"(scope)\"].addlabel(this.name,{type:\"const\",token:state.tokens.curr}),\",\"!==state.tokens.next.value)return advance(\"from\"),advance(\"(string)\"),this;advance(\",\")}if(\"*\"===state.tokens.next.id)advance(\"*\"),advance(\"as\"),state.tokens.next.identifier&&(this.name=identifier(),state.funct[\"(scope)\"].addlabel(this.name,{type:\"const\",token:state.tokens.curr}));else for(advance(\"{\");;){if(\"}\"===state.tokens.next.value){advance(\"}\");break}var importName;if(\"default\"===state.tokens.next.type?(importName=\"default\",advance(\"default\")):importName=identifier(),\"as\"===state.tokens.next.value&&(advance(\"as\"),importName=identifier()),state.funct[\"(scope)\"].addlabel(importName,{type:\"const\",token:state.tokens.curr}),\",\"!==state.tokens.next.value){if(\"}\"===state.tokens.next.value){advance(\"}\");break}error(\"E024\",state.tokens.next,state.tokens.next.value);break}advance(\",\")}return advance(\"from\"),advance(\"(string)\"),this}).exps=!0,stmt(\"export\",function(){var token,identifier,ok=!0;if(state.inES6()||(warning(\"W119\",state.tokens.curr,\"export\",\"6\"),ok=!1),state.funct[\"(scope)\"].block.isGlobal()||(error(\"E053\",state.tokens.curr),ok=!1),\"*\"===state.tokens.next.value)return advance(\"*\"),advance(\"from\"),advance(\"(string)\"),this;if(\"default\"===state.tokens.next.type){state.nameStack.set(state.tokens.next),advance(\"default\");var exportType=state.tokens.next.id;return(\"function\"===exportType||\"class\"===exportType)&&(this.block=!0),token=peek(),expression(10),identifier=token.value,this.block&&(state.funct[\"(scope)\"].addlabel(identifier,{type:exportType,token:token}),state.funct[\"(scope)\"].setExported(identifier,token)),this}if(\"{\"===state.tokens.next.value){advance(\"{\");for(var exportedTokens=[];;){if(state.tokens.next.identifier||error(\"E030\",state.tokens.next,state.tokens.next.value),advance(),exportedTokens.push(state.tokens.curr),\"as\"===state.tokens.next.value&&(advance(\"as\"),state.tokens.next.identifier||error(\"E030\",state.tokens.next,state.tokens.next.value),advance()),\",\"!==state.tokens.next.value){if(\"}\"===state.tokens.next.value){advance(\"}\");break}error(\"E024\",state.tokens.next,state.tokens.next.value);break}advance(\",\")}return\"from\"===state.tokens.next.value?(advance(\"from\"),advance(\"(string)\")):ok&&exportedTokens.forEach(function(token){state.funct[\"(scope)\"].setExported(token.value,token)}),this}if(\"var\"===state.tokens.next.id)advance(\"var\"),state.tokens.curr.fud({inexport:!0});else if(\"let\"===state.tokens.next.id)advance(\"let\"),state.tokens.curr.fud({inexport:!0});else if(\"const\"===state.tokens.next.id)advance(\"const\"),state.tokens.curr.fud({inexport:!0});else if(\"function\"===state.tokens.next.id)this.block=!0,advance(\"function\"),state.syntax[\"function\"].fud({inexport:!0});else if(\"class\"===state.tokens.next.id){this.block=!0,advance(\"class\");var classNameToken=state.tokens.next;state.syntax[\"class\"].fud(),state.funct[\"(scope)\"].setExported(classNameToken.value,classNameToken)}else error(\"E024\",state.tokens.next,state.tokens.next.value);return this}).exps=!0,FutureReservedWord(\"abstract\"),FutureReservedWord(\"boolean\"),FutureReservedWord(\"byte\"),FutureReservedWord(\"char\"),FutureReservedWord(\"class\",{es5:!0,nud:classdef}),FutureReservedWord(\"double\"),FutureReservedWord(\"enum\",{es5:!0}),FutureReservedWord(\"export\",{es5:!0}),FutureReservedWord(\"extends\",{es5:!0}),FutureReservedWord(\"final\"),FutureReservedWord(\"float\"),FutureReservedWord(\"goto\"),FutureReservedWord(\"implements\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"import\",{es5:!0}),FutureReservedWord(\"int\"),FutureReservedWord(\"interface\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"long\"),FutureReservedWord(\"native\"),FutureReservedWord(\"package\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"private\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"protected\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"public\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"short\"),FutureReservedWord(\"static\",{es5:!0,strictOnly:!0}),FutureReservedWord(\"super\",{es5:!0}),FutureReservedWord(\"synchronized\"),FutureReservedWord(\"transient\"),FutureReservedWord(\"volatile\");var lookupBlockType=function(){var pn,pn1,prev,i=-1,bracketStack=0,ret={};checkPunctuators(state.tokens.curr,[\"[\",\"{\"])&&(bracketStack+=1);do{if(prev=-1===i?state.tokens.curr:pn,pn=-1===i?state.tokens.next:peek(i),pn1=peek(i+1),i+=1,checkPunctuators(pn,[\"[\",\"{\"])?bracketStack+=1:checkPunctuators(pn,[\"]\",\"}\"])&&(bracketStack-=1),1===bracketStack&&pn.identifier&&\"for\"===pn.value&&!checkPunctuator(prev,\".\")){ret.isCompArray=!0,ret.notJson=!0;break}if(0===bracketStack&&checkPunctuators(pn,[\"}\",\"]\"])){if(\"=\"===pn1.value){ret.isDestAssign=!0,ret.notJson=!0;break}if(\".\"===pn1.value){ret.notJson=!0;break}}checkPunctuator(pn,\";\")&&(ret.isBlock=!0,ret.notJson=!0)}while(bracketStack>0&&\"(end)\"!==pn.id);return ret},arrayComprehension=function(){function declare(v){var l=_current.variables.filter(function(elt){return elt.value===v?(elt.undef=!1,v):void 0}).length;return 0!==l}function use(v){var l=_current.variables.filter(function(elt){return elt.value!==v||elt.undef?void 0:(elt.unused===!0&&(elt.unused=!1),v)}).length;return 0===l}var _current,CompArray=function(){this.mode=\"use\",this.variables=[]},_carrays=[];return{stack:function(){_current=new CompArray,_carrays.push(_current)},unstack:function(){_current.variables.filter(function(v){v.unused&&warning(\"W098\",v.token,v.raw_text||v.value),v.undef&&state.funct[\"(scope)\"].block.use(v.value,v.token)}),_carrays.splice(-1,1),_current=_carrays[_carrays.length-1]},setState:function(s){_.contains([\"use\",\"define\",\"generate\",\"filter\"],s)&&(_current.mode=s)},check:function(v){return _current?_current&&\"use\"===_current.mode?(use(v)&&_current.variables.push({funct:state.funct,token:state.tokens.curr,value:v,undef:!0,unused:!1}),!0):_current&&\"define\"===_current.mode?(declare(v)||_current.variables.push({funct:state.funct,token:state.tokens.curr,value:v,undef:!1,unused:!0}),!0):_current&&\"generate\"===_current.mode?(state.funct[\"(scope)\"].block.use(v,state.tokens.curr),!0):_current&&\"filter\"===_current.mode?(use(v)&&state.funct[\"(scope)\"].block.use(v,state.tokens.curr),!0):!1:void 0}}},escapeRegex=function(str){return str.replace(/[-\\/\\\\^$*+?.()|[\\]{}]/g,\"\\\\$&\")},itself=function(s,o,g){function each(obj,cb){obj&&(Array.isArray(obj)||\"object\"!=typeof obj||(obj=Object.keys(obj)),obj.forEach(cb))}var i,k,x,reIgnoreStr,reIgnore,optionKeys,newOptionObj={},newIgnoredObj={};o=_.clone(o),state.reset(),o&&o.scope?JSHINT.scope=o.scope:(JSHINT.errors=[],JSHINT.undefs=[],JSHINT.internals=[],JSHINT.blacklist={},JSHINT.scope=\"(main)\"),predefined=Object.create(null),combine(predefined,vars.ecmaIdentifiers[3]),combine(predefined,vars.reservedVars),combine(predefined,g||{}),declared=Object.create(null);var exported=Object.create(null);if(o)for(each(o.predef||null,function(item){var slice,prop;\"-\"===item[0]?(slice=item.slice(1),JSHINT.blacklist[slice]=slice,delete predefined[slice]):(prop=Object.getOwnPropertyDescriptor(o.predef,item),predefined[item]=prop?prop.value:!1)}),each(o.exported||null,function(item){exported[item]=!0}),delete o.predef,delete o.exported,optionKeys=Object.keys(o),x=0;optionKeys.length>x;x++)if(/^-W\\d{3}$/g.test(optionKeys[x]))newIgnoredObj[optionKeys[x].slice(1)]=!0;else{var optionKey=optionKeys[x];newOptionObj[optionKey]=o[optionKey],(\"esversion\"===optionKey&&5===o[optionKey]||\"es5\"===optionKey&&o[optionKey])&&warning(\"I003\"),\"newcap\"===optionKeys[x]&&o[optionKey]===!1&&(newOptionObj[\"(explicitNewcap)\"]=!0)}state.option=newOptionObj,state.ignored=newIgnoredObj,state.option.indent=state.option.indent||4,state.option.maxerr=state.option.maxerr||50,indent=1;var scopeManagerInst=scopeManager(state,predefined,exported,declared);if(scopeManagerInst.on(\"warning\",function(ev){warning.apply(null,[ev.code,ev.token].concat(ev.data))}),scopeManagerInst.on(\"error\",function(ev){error.apply(null,[ev.code,ev.token].concat(ev.data))}),state.funct=functor(\"(global)\",null,{\"(global)\":!0,\"(scope)\":scopeManagerInst,\"(comparray)\":arrayComprehension(),\"(metrics)\":createMetrics(state.tokens.next)}),functions=[state.funct],urls=[],stack=null,member={},membersOnly=null,inblock=!1,lookahead=[],!isString(s)&&!Array.isArray(s))return errorAt(\"E004\",0),!1;api={get isJSON(){return state.jsonMode},getOption:function(name){return state.option[name]||null},getCache:function(name){return state.cache[name]},setCache:function(name,value){state.cache[name]=value},warn:function(code,data){warningAt.apply(null,[code,data.line,data.char].concat(data.data))},on:function(names,listener){names.split(\" \").forEach(function(name){emitter.on(name,listener)}.bind(this))}},emitter.removeAllListeners(),(extraModules||[]).forEach(function(func){func(api)}),state.tokens.prev=state.tokens.curr=state.tokens.next=state.syntax[\"(begin)\"],o&&o.ignoreDelimiters&&(Array.isArray(o.ignoreDelimiters)||(o.ignoreDelimiters=[o.ignoreDelimiters]),o.ignoreDelimiters.forEach(function(delimiterPair){delimiterPair.start&&delimiterPair.end&&(reIgnoreStr=escapeRegex(delimiterPair.start)+\"[\\\\s\\\\S]*?\"+escapeRegex(delimiterPair.end),reIgnore=RegExp(reIgnoreStr,\"ig\"),s=s.replace(reIgnore,function(match){return match.replace(/./g,\" \")}))})),lex=new Lexer(s),lex.on(\"warning\",function(ev){warningAt.apply(null,[ev.code,ev.line,ev.character].concat(ev.data))}),lex.on(\"error\",function(ev){errorAt.apply(null,[ev.code,ev.line,ev.character].concat(ev.data))}),lex.on(\"fatal\",function(ev){quit(\"E041\",ev.line,ev.from)}),lex.on(\"Identifier\",function(ev){emitter.emit(\"Identifier\",ev)}),lex.on(\"String\",function(ev){emitter.emit(\"String\",ev)}),lex.on(\"Number\",function(ev){emitter.emit(\"Number\",ev)}),lex.start();for(var name in o)_.has(o,name)&&checkOption(name,state.tokens.curr);assume(),combine(predefined,g||{}),comma.first=!0;try{switch(advance(),state.tokens.next.id){case\"{\":case\"[\":destructuringAssignOrJsonValue();break;default:directives(),state.directive[\"use strict\"]&&\"global\"!==state.option.strict&&warning(\"W097\",state.tokens.prev),statements()}\"(end)\"!==state.tokens.next.id&&quit(\"E041\",state.tokens.curr.line),state.funct[\"(scope)\"].unstack()}catch(err){if(!err||\"JSHintError\"!==err.name)throw err;var nt=state.tokens.next||{};JSHINT.errors.push({scope:\"(main)\",raw:err.raw,code:err.code,reason:err.message,line:err.line||nt.line,character:err.character||nt.from},null)}if(\"(main)\"===JSHINT.scope)for(o=o||{},i=0;JSHINT.internals.length>i;i+=1)k=JSHINT.internals[i],o.scope=k.elem,itself(k.value,o,g);return 0===JSHINT.errors.length};return itself.addModule=function(func){extraModules.push(func)},itself.addModule(style.register),itself.data=function(){var fu,f,i,j,n,globals,data={functions:[],options:state.option};itself.errors.length&&(data.errors=itself.errors),state.jsonMode&&(data.json=!0);var impliedGlobals=state.funct[\"(scope)\"].getImpliedGlobals();for(impliedGlobals.length>0&&(data.implieds=impliedGlobals),urls.length>0&&(data.urls=urls),globals=state.funct[\"(scope)\"].getUsedOrDefinedGlobals(),globals.length>0&&(data.globals=globals),i=1;functions.length>i;i+=1){for(f=functions[i],fu={},j=0;functionicity.length>j;j+=1)fu[functionicity[j]]=[];for(j=0;functionicity.length>j;j+=1)0===fu[functionicity[j]].length&&delete fu[functionicity[j]];fu.name=f[\"(name)\"],fu.param=f[\"(params)\"],fu.line=f[\"(line)\"],fu.character=f[\"(character)\"],fu.last=f[\"(last)\"],fu.lastcharacter=f[\"(lastcharacter)\"],fu.metrics={complexity:f[\"(metrics)\"].ComplexityCount,parameters:f[\"(metrics)\"].arity,statements:f[\"(metrics)\"].statementCount},data.functions.push(fu)}var unuseds=state.funct[\"(scope)\"].getUnuseds();unuseds.length>0&&(data.unused=unuseds);for(n in member)if(\"number\"==typeof member[n]){data.member=member;break}return data},itself.jshint=itself,itself}();\"object\"==typeof exports&&exports&&(exports.JSHINT=JSHINT)},{\"../lodash\":\"/node_modules/jshint/lodash.js\",\"./lex.js\":\"/node_modules/jshint/src/lex.js\",\"./messages.js\":\"/node_modules/jshint/src/messages.js\",\"./options.js\":\"/node_modules/jshint/src/options.js\",\"./reg.js\":\"/node_modules/jshint/src/reg.js\",\"./scope-manager.js\":\"/node_modules/jshint/src/scope-manager.js\",\"./state.js\":\"/node_modules/jshint/src/state.js\",\"./style.js\":\"/node_modules/jshint/src/style.js\",\"./vars.js\":\"/node_modules/jshint/src/vars.js\",events:\"/node_modules/browserify/node_modules/events/events.js\"}],\"/node_modules/jshint/src/lex.js\":[function(_dereq_,module,exports){\"use strict\";function asyncTrigger(){var _checks=[];return{push:function(fn){_checks.push(fn)},check:function(){for(var check=0;_checks.length>check;++check)_checks[check]();_checks.splice(0,_checks.length)}}}function Lexer(source){var lines=source;\"string\"==typeof lines&&(lines=lines.replace(/\\r\\n/g,\"\\n\").replace(/\\r/g,\"\\n\").split(\"\\n\")),lines[0]&&\"#!\"===lines[0].substr(0,2)&&(-1!==lines[0].indexOf(\"node\")&&(state.option.node=!0),lines[0]=\"\"),this.emitter=new events.EventEmitter,this.source=source,this.setLines(lines),this.prereg=!0,this.line=0,this.char=1,this.from=1,this.input=\"\",this.inComment=!1,this.context=[],this.templateStarts=[];for(var i=0;state.option.indent>i;i+=1)state.tab+=\" \";this.ignoreLinterErrors=!1}var _=_dereq_(\"../lodash\"),events=_dereq_(\"events\"),reg=_dereq_(\"./reg.js\"),state=_dereq_(\"./state.js\").state,unicodeData=_dereq_(\"../data/ascii-identifier-data.js\"),asciiIdentifierStartTable=unicodeData.asciiIdentifierStartTable,asciiIdentifierPartTable=unicodeData.asciiIdentifierPartTable,Token={Identifier:1,Punctuator:2,NumericLiteral:3,StringLiteral:4,Comment:5,Keyword:6,NullLiteral:7,BooleanLiteral:8,RegExp:9,TemplateHead:10,TemplateMiddle:11,TemplateTail:12,NoSubstTemplate:13},Context={Block:1,Template:2};Lexer.prototype={_lines:[],inContext:function(ctxType){return this.context.length>0&&this.context[this.context.length-1].type===ctxType},pushContext:function(ctxType){this.context.push({type:ctxType})},popContext:function(){return this.context.pop()},isContext:function(context){return this.context.length>0&&this.context[this.context.length-1]===context},currentContext:function(){return this.context.length>0&&this.context[this.context.length-1]},getLines:function(){return this._lines=state.lines,this._lines},setLines:function(val){this._lines=val,state.lines=this._lines},peek:function(i){return this.input.charAt(i||0)},skip:function(i){i=i||1,this.char+=i,this.input=this.input.slice(i)},on:function(names,listener){names.split(\" \").forEach(function(name){this.emitter.on(name,listener)}.bind(this))},trigger:function(){this.emitter.emit.apply(this.emitter,Array.prototype.slice.call(arguments))},triggerAsync:function(type,args,checks,fn){checks.push(function(){fn()&&this.trigger(type,args)}.bind(this))},scanPunctuator:function(){var ch2,ch3,ch4,ch1=this.peek();switch(ch1){case\".\":if(/^[0-9]$/.test(this.peek(1)))return null;if(\".\"===this.peek(1)&&\".\"===this.peek(2))return{type:Token.Punctuator,value:\"...\"};case\"(\":case\")\":case\";\":case\",\":case\"[\":case\"]\":case\":\":case\"~\":case\"?\":return{type:Token.Punctuator,value:ch1};case\"{\":return this.pushContext(Context.Block),{type:Token.Punctuator,value:ch1};case\"}\":return this.inContext(Context.Block)&&this.popContext(),{type:Token.Punctuator,value:ch1};case\"#\":return{type:Token.Punctuator,value:ch1};case\"\":return null}return ch2=this.peek(1),ch3=this.peek(2),ch4=this.peek(3),\">\"===ch1&&\">\"===ch2&&\">\"===ch3&&\"=\"===ch4?{type:Token.Punctuator,value:\">>>=\"}:\"=\"===ch1&&\"=\"===ch2&&\"=\"===ch3?{type:Token.Punctuator,value:\"===\"}:\"!\"===ch1&&\"=\"===ch2&&\"=\"===ch3?{type:Token.Punctuator,value:\"!==\"}:\">\"===ch1&&\">\"===ch2&&\">\"===ch3?{type:Token.Punctuator,value:\">>>\"}:\"<\"===ch1&&\"<\"===ch2&&\"=\"===ch3?{type:Token.Punctuator,value:\"<<=\"}:\">\"===ch1&&\">\"===ch2&&\"=\"===ch3?{type:Token.Punctuator,value:\">>=\"}:\"=\"===ch1&&\">\"===ch2?{type:Token.Punctuator,value:ch1+ch2}:ch1===ch2&&\"+-<>&|\".indexOf(ch1)>=0?{type:Token.Punctuator,value:ch1+ch2}:\"<>=!+-*%&|^\".indexOf(ch1)>=0?\"=\"===ch2?{type:Token.Punctuator,value:ch1+ch2}:{type:Token.Punctuator,value:ch1}:\"/\"===ch1?\"=\"===ch2?{type:Token.Punctuator,value:\"/=\"}:{type:Token.Punctuator,value:\"/\"}:null},scanComments:function(){function commentToken(label,body,opt){var special=[\"jshint\",\"jslint\",\"members\",\"member\",\"globals\",\"global\",\"exported\"],isSpecial=!1,value=label+body,commentType=\"plain\";return opt=opt||{},opt.isMultiline&&(value+=\"*/\"),body=body.replace(/\\n/g,\" \"),\"/*\"===label&&reg.fallsThrough.test(body)&&(isSpecial=!0,commentType=\"falls through\"),special.forEach(function(str){if(!isSpecial&&(\"//\"!==label||\"jshint\"===str)&&(\" \"===body.charAt(str.length)&&body.substr(0,str.length)===str&&(isSpecial=!0,label+=str,body=body.substr(str.length)),isSpecial||\" \"!==body.charAt(0)||\" \"!==body.charAt(str.length+1)||body.substr(1,str.length)!==str||(isSpecial=!0,label=label+\" \"+str,body=body.substr(str.length+1)),isSpecial))switch(str){case\"member\":commentType=\"members\";break;case\"global\":commentType=\"globals\";break;default:var options=body.split(\":\").map(function(v){return v.replace(/^\\s+/,\"\").replace(/\\s+$/,\"\")});if(2===options.length)switch(options[0]){case\"ignore\":switch(options[1]){case\"start\":self.ignoringLinterErrors=!0,isSpecial=!1;break;case\"end\":self.ignoringLinterErrors=!1,isSpecial=!1}}commentType=str}}),{type:Token.Comment,commentType:commentType,value:value,body:body,isSpecial:isSpecial,isMultiline:opt.isMultiline||!1,isMalformed:opt.isMalformed||!1}}var ch1=this.peek(),ch2=this.peek(1),rest=this.input.substr(2),startLine=this.line,startChar=this.char,self=this;if(\"*\"===ch1&&\"/\"===ch2)return this.trigger(\"error\",{code:\"E018\",line:startLine,character:startChar}),this.skip(2),null;if(\"/\"!==ch1||\"*\"!==ch2&&\"/\"!==ch2)return null;if(\"/\"===ch2)return this.skip(this.input.length),commentToken(\"//\",rest);var body=\"\";if(\"*\"===ch2){for(this.inComment=!0,this.skip(2);\"*\"!==this.peek()||\"/\"!==this.peek(1);)if(\"\"===this.peek()){if(body+=\"\\n\",!this.nextLine())return this.trigger(\"error\",{code:\"E017\",line:startLine,character:startChar}),this.inComment=!1,commentToken(\"/*\",body,{isMultiline:!0,isMalformed:!0})}else body+=this.peek(),this.skip();return this.skip(2),this.inComment=!1,commentToken(\"/*\",body,{isMultiline:!0})}},scanKeyword:function(){var result=/^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input),keywords=[\"if\",\"in\",\"do\",\"var\",\"for\",\"new\",\"try\",\"let\",\"this\",\"else\",\"case\",\"void\",\"with\",\"enum\",\"while\",\"break\",\"catch\",\"throw\",\"const\",\"yield\",\"class\",\"super\",\"return\",\"typeof\",\"delete\",\"switch\",\"export\",\"import\",\"default\",\"finally\",\"extends\",\"function\",\"continue\",\"debugger\",\"instanceof\"];return result&&keywords.indexOf(result[0])>=0?{type:Token.Keyword,value:result[0]}:null},scanIdentifier:function(){function isNonAsciiIdentifierStart(code){return code>256}function isNonAsciiIdentifierPart(code){return code>256}function isHexDigit(str){return/^[0-9a-fA-F]$/.test(str)}function removeEscapeSequences(id){return id.replace(/\\\\u([0-9a-fA-F]{4})/g,function(m0,codepoint){return String.fromCharCode(parseInt(codepoint,16))})}var type,char,id=\"\",index=0,readUnicodeEscapeSequence=function(){if(index+=1,\"u\"!==this.peek(index))return null;var code,ch1=this.peek(index+1),ch2=this.peek(index+2),ch3=this.peek(index+3),ch4=this.peek(index+4);return isHexDigit(ch1)&&isHexDigit(ch2)&&isHexDigit(ch3)&&isHexDigit(ch4)?(code=parseInt(ch1+ch2+ch3+ch4,16),asciiIdentifierPartTable[code]||isNonAsciiIdentifierPart(code)?(index+=5,\"\\\\u\"+ch1+ch2+ch3+ch4):null):null}.bind(this),getIdentifierStart=function(){var chr=this.peek(index),code=chr.charCodeAt(0);return 92===code?readUnicodeEscapeSequence():128>code?asciiIdentifierStartTable[code]?(index+=1,chr):null:isNonAsciiIdentifierStart(code)?(index+=1,chr):null}.bind(this),getIdentifierPart=function(){var chr=this.peek(index),code=chr.charCodeAt(0);return 92===code?readUnicodeEscapeSequence():128>code?asciiIdentifierPartTable[code]?(index+=1,chr):null:isNonAsciiIdentifierPart(code)?(index+=1,chr):null}.bind(this);if(char=getIdentifierStart(),null===char)return null;for(id=char;char=getIdentifierPart(),null!==char;)id+=char;switch(id){case\"true\":case\"false\":type=Token.BooleanLiteral;break;case\"null\":type=Token.NullLiteral;break;default:type=Token.Identifier}return{type:type,value:removeEscapeSequences(id),text:id,tokenLength:id.length}},scanNumericLiteral:function(){function isDecimalDigit(str){return/^[0-9]$/.test(str)}function isOctalDigit(str){return/^[0-7]$/.test(str)}function isBinaryDigit(str){return/^[01]$/.test(str)}function isHexDigit(str){return/^[0-9a-fA-F]$/.test(str)}function isIdentifierStart(ch){return\"$\"===ch||\"_\"===ch||\"\\\\\"===ch||ch>=\"a\"&&\"z\">=ch||ch>=\"A\"&&\"Z\">=ch}var bad,index=0,value=\"\",length=this.input.length,char=this.peek(index),isAllowedDigit=isDecimalDigit,base=10,isLegacy=!1;if(\".\"!==char&&!isDecimalDigit(char))return null;if(\".\"!==char){for(value=this.peek(index),index+=1,char=this.peek(index),\"0\"===value&&((\"x\"===char||\"X\"===char)&&(isAllowedDigit=isHexDigit,base=16,index+=1,value+=char),(\"o\"===char||\"O\"===char)&&(isAllowedDigit=isOctalDigit,base=8,state.inES6(!0)||this.trigger(\"warning\",{code:\"W119\",line:this.line,character:this.char,data:[\"Octal integer literal\",\"6\"]}),index+=1,value+=char),(\"b\"===char||\"B\"===char)&&(isAllowedDigit=isBinaryDigit,base=2,state.inES6(!0)||this.trigger(\"warning\",{code:\"W119\",line:this.line,character:this.char,data:[\"Binary integer literal\",\"6\"]}),index+=1,value+=char),isOctalDigit(char)&&(isAllowedDigit=isOctalDigit,base=8,isLegacy=!0,bad=!1,index+=1,value+=char),!isOctalDigit(char)&&isDecimalDigit(char)&&(index+=1,value+=char));length>index;){if(char=this.peek(index),isLegacy&&isDecimalDigit(char))bad=!0;else if(!isAllowedDigit(char))break;value+=char,index+=1}if(isAllowedDigit!==isDecimalDigit)return!isLegacy&&2>=value.length?{type:Token.NumericLiteral,value:value,isMalformed:!0}:length>index&&(char=this.peek(index),isIdentifierStart(char))?null:{type:Token.NumericLiteral,value:value,base:base,isLegacy:isLegacy,isMalformed:!1}}if(\".\"===char)for(value+=char,index+=1;length>index&&(char=this.peek(index),isDecimalDigit(char));)value+=char,index+=1;if(\"e\"===char||\"E\"===char){if(value+=char,index+=1,char=this.peek(index),(\"+\"===char||\"-\"===char)&&(value+=this.peek(index),index+=1),char=this.peek(index),!isDecimalDigit(char))return null;for(value+=char,index+=1;length>index&&(char=this.peek(index),isDecimalDigit(char));)value+=char,index+=1}return length>index&&(char=this.peek(index),isIdentifierStart(char))?null:{type:Token.NumericLiteral,value:value,base:base,isMalformed:!isFinite(value)}},scanEscapeSequence:function(checks){var allowNewLine=!1,jump=1;this.skip();var char=this.peek();switch(char){case\"'\":this.triggerAsync(\"warning\",{code:\"W114\",line:this.line,character:this.char,data:[\"\\\\'\"]},checks,function(){return state.jsonMode});break;case\"b\":char=\"\\\\b\";break;case\"f\":char=\"\\\\f\";break;case\"n\":char=\"\\\\n\";break;case\"r\":char=\"\\\\r\";break;case\"t\":char=\"\\\\t\";break;case\"0\":char=\"\\\\0\";var n=parseInt(this.peek(1),10);this.triggerAsync(\"warning\",{code:\"W115\",line:this.line,character:this.char},checks,function(){return n>=0&&7>=n&&state.isStrict()});break;case\"u\":var hexCode=this.input.substr(1,4),code=parseInt(hexCode,16);isNaN(code)&&this.trigger(\"warning\",{code:\"W052\",line:this.line,character:this.char,data:[\"u\"+hexCode]}),char=String.fromCharCode(code),jump=5;break;case\"v\":this.triggerAsync(\"warning\",{code:\"W114\",line:this.line,character:this.char,data:[\"\\\\v\"]},checks,function(){return state.jsonMode}),char=\"\u000b\";break;case\"x\":var x=parseInt(this.input.substr(1,2),16);this.triggerAsync(\"warning\",{code:\"W114\",line:this.line,character:this.char,data:[\"\\\\x-\"]},checks,function(){return state.jsonMode}),char=String.fromCharCode(x),jump=3;break;case\"\\\\\":char=\"\\\\\\\\\";break;case'\"':char='\\\\\"';break;case\"/\":break;case\"\":allowNewLine=!0,char=\"\"}return{\"char\":char,jump:jump,allowNewLine:allowNewLine}},scanTemplateLiteral:function(checks){var tokenType,ch,value=\"\",startLine=this.line,startChar=this.char,depth=this.templateStarts.length;if(!state.inES6(!0))return null;if(\"`\"===this.peek())tokenType=Token.TemplateHead,this.templateStarts.push({line:this.line,\"char\":this.char}),depth=this.templateStarts.length,this.skip(1),this.pushContext(Context.Template);else{if(!this.inContext(Context.Template)||\"}\"!==this.peek())return null;tokenType=Token.TemplateMiddle}for(;\"`\"!==this.peek();){for(;\"\"===(ch=this.peek());)if(value+=\"\\n\",!this.nextLine()){var startPos=this.templateStarts.pop();return this.trigger(\"error\",{code:\"E052\",line:startPos.line,character:startPos.char}),{type:tokenType,value:value,startLine:startLine,startChar:startChar,isUnclosed:!0,depth:depth,context:this.popContext()}}if(\"$\"===ch&&\"{\"===this.peek(1))return value+=\"${\",this.skip(2),{type:tokenType,value:value,startLine:startLine,startChar:startChar,isUnclosed:!1,depth:depth,context:this.currentContext()};\nif(\"\\\\\"===ch){var escape=this.scanEscapeSequence(checks);value+=escape.char,this.skip(escape.jump)}else\"`\"!==ch&&(value+=ch,this.skip(1))}return tokenType=tokenType===Token.TemplateHead?Token.NoSubstTemplate:Token.TemplateTail,this.skip(1),this.templateStarts.pop(),{type:tokenType,value:value,startLine:startLine,startChar:startChar,isUnclosed:!1,depth:depth,context:this.popContext()}},scanStringLiteral:function(checks){var quote=this.peek();if('\"'!==quote&&\"'\"!==quote)return null;this.triggerAsync(\"warning\",{code:\"W108\",line:this.line,character:this.char},checks,function(){return state.jsonMode&&'\"'!==quote});var value=\"\",startLine=this.line,startChar=this.char,allowNewLine=!1;for(this.skip();this.peek()!==quote;)if(\"\"===this.peek()){if(allowNewLine?(allowNewLine=!1,this.triggerAsync(\"warning\",{code:\"W043\",line:this.line,character:this.char},checks,function(){return!state.option.multistr}),this.triggerAsync(\"warning\",{code:\"W042\",line:this.line,character:this.char},checks,function(){return state.jsonMode&&state.option.multistr})):this.trigger(\"warning\",{code:\"W112\",line:this.line,character:this.char}),!this.nextLine())return this.trigger(\"error\",{code:\"E029\",line:startLine,character:startChar}),{type:Token.StringLiteral,value:value,startLine:startLine,startChar:startChar,isUnclosed:!0,quote:quote}}else{allowNewLine=!1;var char=this.peek(),jump=1;if(\" \">char&&this.trigger(\"warning\",{code:\"W113\",line:this.line,character:this.char,data:[\"<non-printable>\"]}),\"\\\\\"===char){var parsed=this.scanEscapeSequence(checks);char=parsed.char,jump=parsed.jump,allowNewLine=parsed.allowNewLine}value+=char,this.skip(jump)}return this.skip(),{type:Token.StringLiteral,value:value,startLine:startLine,startChar:startChar,isUnclosed:!1,quote:quote}},scanRegExp:function(){var terminated,index=0,length=this.input.length,char=this.peek(),value=char,body=\"\",flags=[],malformed=!1,isCharSet=!1,scanUnexpectedChars=function(){\" \">char&&(malformed=!0,this.trigger(\"warning\",{code:\"W048\",line:this.line,character:this.char})),\"<\"===char&&(malformed=!0,this.trigger(\"warning\",{code:\"W049\",line:this.line,character:this.char,data:[char]}))}.bind(this);if(!this.prereg||\"/\"!==char)return null;for(index+=1,terminated=!1;length>index;)if(char=this.peek(index),value+=char,body+=char,isCharSet)\"]\"===char&&(\"\\\\\"!==this.peek(index-1)||\"\\\\\"===this.peek(index-2))&&(isCharSet=!1),\"\\\\\"===char&&(index+=1,char=this.peek(index),body+=char,value+=char,scanUnexpectedChars()),index+=1;else{if(\"\\\\\"===char){if(index+=1,char=this.peek(index),body+=char,value+=char,scanUnexpectedChars(),\"/\"===char){index+=1;continue}if(\"[\"===char){index+=1;continue}}if(\"[\"!==char){if(\"/\"===char){body=body.substr(0,body.length-1),terminated=!0,index+=1;break}index+=1}else isCharSet=!0,index+=1}if(!terminated)return this.trigger(\"error\",{code:\"E015\",line:this.line,character:this.from}),void this.trigger(\"fatal\",{line:this.line,from:this.from});for(;length>index&&(char=this.peek(index),/[gim]/.test(char));)flags.push(char),value+=char,index+=1;try{RegExp(body,flags.join(\"\"))}catch(err){malformed=!0,this.trigger(\"error\",{code:\"E016\",line:this.line,character:this.char,data:[err.message]})}return{type:Token.RegExp,value:value,flags:flags,isMalformed:malformed}},scanNonBreakingSpaces:function(){return state.option.nonbsp?this.input.search(/(\\u00A0)/):-1},scanUnsafeChars:function(){return this.input.search(reg.unsafeChars)},next:function(checks){this.from=this.char;var start;if(/\\s/.test(this.peek()))for(start=this.char;/\\s/.test(this.peek());)this.from+=1,this.skip();var match=this.scanComments()||this.scanStringLiteral(checks)||this.scanTemplateLiteral(checks);return match?match:(match=this.scanRegExp()||this.scanPunctuator()||this.scanKeyword()||this.scanIdentifier()||this.scanNumericLiteral(),match?(this.skip(match.tokenLength||match.value.length),match):null)},nextLine:function(){var char;if(this.line>=this.getLines().length)return!1;this.input=this.getLines()[this.line],this.line+=1,this.char=1,this.from=1;var inputTrimmed=this.input.trim(),startsWith=function(){return _.some(arguments,function(prefix){return 0===inputTrimmed.indexOf(prefix)})},endsWith=function(){return _.some(arguments,function(suffix){return-1!==inputTrimmed.indexOf(suffix,inputTrimmed.length-suffix.length)})};if(this.ignoringLinterErrors===!0&&(startsWith(\"/*\",\"//\")||this.inComment&&endsWith(\"*/\")||(this.input=\"\")),char=this.scanNonBreakingSpaces(),char>=0&&this.trigger(\"warning\",{code:\"W125\",line:this.line,character:char+1}),this.input=this.input.replace(/\\t/g,state.tab),char=this.scanUnsafeChars(),char>=0&&this.trigger(\"warning\",{code:\"W100\",line:this.line,character:char}),!this.ignoringLinterErrors&&state.option.maxlen&&state.option.maxlen<this.input.length){var inComment=this.inComment||startsWith.call(inputTrimmed,\"//\")||startsWith.call(inputTrimmed,\"/*\"),shouldTriggerError=!inComment||!reg.maxlenException.test(inputTrimmed);shouldTriggerError&&this.trigger(\"warning\",{code:\"W101\",line:this.line,character:this.input.length})}return!0},start:function(){this.nextLine()},token:function(){function isReserved(token,isProperty){if(!token.reserved)return!1;var meta=token.meta;if(meta&&meta.isFutureReservedWord&&state.inES5()){if(!meta.es5)return!1;if(meta.strictOnly&&!state.option.strict&&!state.isStrict())return!1;if(isProperty)return!1}return!0}for(var token,checks=asyncTrigger(),create=function(type,value,isProperty,token){var obj;if(\"(endline)\"!==type&&\"(end)\"!==type&&(this.prereg=!1),\"(punctuator)\"===type){switch(value){case\".\":case\")\":case\"~\":case\"#\":case\"]\":case\"++\":case\"--\":this.prereg=!1;break;default:this.prereg=!0}obj=Object.create(state.syntax[value]||state.syntax[\"(error)\"])}return\"(identifier)\"===type&&((\"return\"===value||\"case\"===value||\"typeof\"===value)&&(this.prereg=!0),_.has(state.syntax,value)&&(obj=Object.create(state.syntax[value]||state.syntax[\"(error)\"]),isReserved(obj,isProperty&&\"(identifier)\"===type)||(obj=null))),obj||(obj=Object.create(state.syntax[type])),obj.identifier=\"(identifier)\"===type,obj.type=obj.type||type,obj.value=value,obj.line=this.line,obj.character=this.char,obj.from=this.from,obj.identifier&&token&&(obj.raw_text=token.text||token.value),token&&token.startLine&&token.startLine!==this.line&&(obj.startLine=token.startLine),token&&token.context&&(obj.context=token.context),token&&token.depth&&(obj.depth=token.depth),token&&token.isUnclosed&&(obj.isUnclosed=token.isUnclosed),isProperty&&obj.identifier&&(obj.isProperty=isProperty),obj.check=checks.check,obj}.bind(this);;){if(!this.input.length)return this.nextLine()?create(\"(endline)\",\"\"):this.exhausted?null:(this.exhausted=!0,create(\"(end)\",\"\"));if(token=this.next(checks))switch(token.type){case Token.StringLiteral:return this.triggerAsync(\"String\",{line:this.line,\"char\":this.char,from:this.from,startLine:token.startLine,startChar:token.startChar,value:token.value,quote:token.quote},checks,function(){return!0}),create(\"(string)\",token.value,null,token);case Token.TemplateHead:return this.trigger(\"TemplateHead\",{line:this.line,\"char\":this.char,from:this.from,startLine:token.startLine,startChar:token.startChar,value:token.value}),create(\"(template)\",token.value,null,token);case Token.TemplateMiddle:return this.trigger(\"TemplateMiddle\",{line:this.line,\"char\":this.char,from:this.from,startLine:token.startLine,startChar:token.startChar,value:token.value}),create(\"(template middle)\",token.value,null,token);case Token.TemplateTail:return this.trigger(\"TemplateTail\",{line:this.line,\"char\":this.char,from:this.from,startLine:token.startLine,startChar:token.startChar,value:token.value}),create(\"(template tail)\",token.value,null,token);case Token.NoSubstTemplate:return this.trigger(\"NoSubstTemplate\",{line:this.line,\"char\":this.char,from:this.from,startLine:token.startLine,startChar:token.startChar,value:token.value}),create(\"(no subst template)\",token.value,null,token);case Token.Identifier:this.triggerAsync(\"Identifier\",{line:this.line,\"char\":this.char,from:this.form,name:token.value,raw_name:token.text,isProperty:\".\"===state.tokens.curr.id},checks,function(){return!0});case Token.Keyword:case Token.NullLiteral:case Token.BooleanLiteral:return create(\"(identifier)\",token.value,\".\"===state.tokens.curr.id,token);case Token.NumericLiteral:return token.isMalformed&&this.trigger(\"warning\",{code:\"W045\",line:this.line,character:this.char,data:[token.value]}),this.triggerAsync(\"warning\",{code:\"W114\",line:this.line,character:this.char,data:[\"0x-\"]},checks,function(){return 16===token.base&&state.jsonMode}),this.triggerAsync(\"warning\",{code:\"W115\",line:this.line,character:this.char},checks,function(){return state.isStrict()&&8===token.base&&token.isLegacy}),this.trigger(\"Number\",{line:this.line,\"char\":this.char,from:this.from,value:token.value,base:token.base,isMalformed:token.malformed}),create(\"(number)\",token.value);case Token.RegExp:return create(\"(regexp)\",token.value);case Token.Comment:if(state.tokens.curr.comment=!0,token.isSpecial)return{id:\"(comment)\",value:token.value,body:token.body,type:token.commentType,isSpecial:token.isSpecial,line:this.line,character:this.char,from:this.from};break;case\"\":break;default:return create(\"(punctuator)\",token.value)}else this.input.length&&(this.trigger(\"error\",{code:\"E024\",line:this.line,character:this.char,data:[this.peek()]}),this.input=\"\")}}},exports.Lexer=Lexer,exports.Context=Context},{\"../data/ascii-identifier-data.js\":\"/node_modules/jshint/data/ascii-identifier-data.js\",\"../lodash\":\"/node_modules/jshint/lodash.js\",\"./reg.js\":\"/node_modules/jshint/src/reg.js\",\"./state.js\":\"/node_modules/jshint/src/state.js\",events:\"/node_modules/browserify/node_modules/events/events.js\"}],\"/node_modules/jshint/src/messages.js\":[function(_dereq_,module,exports){\"use strict\";var _=_dereq_(\"../lodash\"),errors={E001:\"Bad option: '{a}'.\",E002:\"Bad option value.\",E003:\"Expected a JSON value.\",E004:\"Input is neither a string nor an array of strings.\",E005:\"Input is empty.\",E006:\"Unexpected early end of program.\",E007:'Missing \"use strict\" statement.',E008:\"Strict violation.\",E009:\"Option 'validthis' can't be used in a global scope.\",E010:\"'with' is not allowed in strict mode.\",E011:\"'{a}' has already been declared.\",E012:\"const '{a}' is initialized to 'undefined'.\",E013:\"Attempting to override '{a}' which is a constant.\",E014:\"A regular expression literal can be confused with '/='.\",E015:\"Unclosed regular expression.\",E016:\"Invalid regular expression.\",E017:\"Unclosed comment.\",E018:\"Unbegun comment.\",E019:\"Unmatched '{a}'.\",E020:\"Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.\",E021:\"Expected '{a}' and instead saw '{b}'.\",E022:\"Line breaking error '{a}'.\",E023:\"Missing '{a}'.\",E024:\"Unexpected '{a}'.\",E025:\"Missing ':' on a case clause.\",E026:\"Missing '}' to match '{' from line {a}.\",E027:\"Missing ']' to match '[' from line {a}.\",E028:\"Illegal comma.\",E029:\"Unclosed string.\",E030:\"Expected an identifier and instead saw '{a}'.\",E031:\"Bad assignment.\",E032:\"Expected a small integer or 'false' and instead saw '{a}'.\",E033:\"Expected an operator and instead saw '{a}'.\",E034:\"get/set are ES5 features.\",E035:\"Missing property name.\",E036:\"Expected to see a statement and instead saw a block.\",E037:null,E038:null,E039:\"Function declarations are not invocable. Wrap the whole function invocation in parens.\",E040:\"Each value should have its own case label.\",E041:\"Unrecoverable syntax error.\",E042:\"Stopping.\",E043:\"Too many errors.\",E044:null,E045:\"Invalid for each loop.\",E046:\"A yield statement shall be within a generator function (with syntax: `function*`)\",E047:null,E048:\"{a} declaration not directly within block.\",E049:\"A {a} cannot be named '{b}'.\",E050:\"Mozilla acequires the yield expression to be parenthesized here.\",E051:null,E052:\"Unclosed template literal.\",E053:\"Export declaration must be in global scope.\",E054:\"Class properties must be methods. Expected '(' but instead saw '{a}'.\",E055:\"The '{a}' option cannot be set after any executable code.\",E056:\"'{a}' was used before it was declared, which is illegal for '{b}' variables.\",E057:\"Invalid meta property: '{a}.{b}'.\",E058:\"Missing semicolon.\"},warnings={W001:\"'hasOwnProperty' is a really bad name.\",W002:\"Value of '{a}' may be overwritten in IE 8 and earlier.\",W003:\"'{a}' was used before it was defined.\",W004:\"'{a}' is already defined.\",W005:\"A dot following a number can be confused with a decimal point.\",W006:\"Confusing minuses.\",W007:\"Confusing plusses.\",W008:\"A leading decimal point can be confused with a dot: '{a}'.\",W009:\"The array literal notation [] is preferable.\",W010:\"The object literal notation {} is preferable.\",W011:null,W012:null,W013:null,W014:\"Bad line breaking before '{a}'.\",W015:null,W016:\"Unexpected use of '{a}'.\",W017:\"Bad operand.\",W018:\"Confusing use of '{a}'.\",W019:\"Use the isNaN function to compare with NaN.\",W020:\"Read only.\",W021:\"Reassignment of '{a}', which is is a {b}. Use 'var' or 'let' to declare bindings that may change.\",W022:\"Do not assign to the exception parameter.\",W023:\"Expected an identifier in an assignment and instead saw a function invocation.\",W024:\"Expected an identifier and instead saw '{a}' (a reserved word).\",W025:\"Missing name in function declaration.\",W026:\"Inner functions should be listed at the top of the outer function.\",W027:\"Unreachable '{a}' after '{b}'.\",W028:\"Label '{a}' on {b} statement.\",W030:\"Expected an assignment or function call and instead saw an expression.\",W031:\"Do not use 'new' for side effects.\",W032:\"Unnecessary semicolon.\",W033:\"Missing semicolon.\",W034:'Unnecessary directive \"{a}\".',W035:\"Empty block.\",W036:\"Unexpected /*member '{a}'.\",W037:\"'{a}' is a statement label.\",W038:\"'{a}' used out of scope.\",W039:\"'{a}' is not allowed.\",W040:\"Possible strict violation.\",W041:\"Use '{a}' to compare with '{b}'.\",W042:\"Avoid EOL escaping.\",W043:\"Bad escaping of EOL. Use option multistr if needed.\",W044:\"Bad or unnecessary escaping.\",W045:\"Bad number '{a}'.\",W046:\"Don't use extra leading zeros '{a}'.\",W047:\"A trailing decimal point can be confused with a dot: '{a}'.\",W048:\"Unexpected control character in regular expression.\",W049:\"Unexpected escaped character '{a}' in regular expression.\",W050:\"JavaScript URL.\",W051:\"Variables should not be deleted.\",W052:\"Unexpected '{a}'.\",W053:\"Do not use {a} as a constructor.\",W054:\"The Function constructor is a form of eval.\",W055:\"A constructor name should start with an uppercase letter.\",W056:\"Bad constructor.\",W057:\"Weird construction. Is 'new' necessary?\",W058:\"Missing '()' invoking a constructor.\",W059:\"Avoid arguments.{a}.\",W060:\"document.write can be a form of eval.\",W061:\"eval can be harmful.\",W062:\"Wrap an immediate function invocation in parens to assist the reader in understanding that the expression is the result of a function, and not the function itself.\",W063:\"Math is not a function.\",W064:\"Missing 'new' prefix when invoking a constructor.\",W065:\"Missing radix parameter.\",W066:\"Implied eval. Consider passing a function instead of a string.\",W067:\"Bad invocation.\",W068:\"Wrapping non-IIFE function literals in parens is unnecessary.\",W069:\"['{a}'] is better written in dot notation.\",W070:\"Extra comma. (it breaks older versions of IE)\",W071:\"This function has too many statements. ({a})\",W072:\"This function has too many parameters. ({a})\",W073:\"Blocks are nested too deeply. ({a})\",W074:\"This function's cyclomatic complexity is too high. ({a})\",W075:\"Duplicate {a} '{b}'.\",W076:\"Unexpected parameter '{a}' in get {b} function.\",W077:\"Expected a single parameter in set {a} function.\",W078:\"Setter is defined without getter.\",W079:\"Redefinition of '{a}'.\",W080:\"It's not necessary to initialize '{a}' to 'undefined'.\",W081:null,W082:\"Function declarations should not be placed in blocks. Use a function expression or move the statement to the top of the outer function.\",W083:\"Don't make functions within a loop.\",W084:\"Assignment in conditional expression\",W085:\"Don't use 'with'.\",W086:\"Expected a 'break' statement before '{a}'.\",W087:\"Forgotten 'debugger' statement?\",W088:\"Creating global 'for' variable. Should be 'for (var {a} ...'.\",W089:\"The body of a for in should be wrapped in an if statement to filter unwanted properties from the prototype.\",W090:\"'{a}' is not a statement label.\",W091:null,W093:\"Did you mean to return a conditional instead of an assignment?\",W094:\"Unexpected comma.\",W095:\"Expected a string and instead saw {a}.\",W096:\"The '{a}' key may produce unexpected results.\",W097:'Use the function form of \"use strict\".',W098:\"'{a}' is defined but never used.\",W099:null,W100:\"This character may get silently deleted by one or more browsers.\",W101:\"Line is too long.\",W102:null,W103:\"The '{a}' property is deprecated.\",W104:\"'{a}' is available in ES{b} (use 'esversion: {b}') or Mozilla JS extensions (use moz).\",W105:\"Unexpected {a} in '{b}'.\",W106:\"Identifier '{a}' is not in camel case.\",W107:\"Script URL.\",W108:\"Strings must use doublequote.\",W109:\"Strings must use singlequote.\",W110:\"Mixed double and single quotes.\",W112:\"Unclosed string.\",W113:\"Control character in string: {a}.\",W114:\"Avoid {a}.\",W115:\"Octal literals are not allowed in strict mode.\",W116:\"Expected '{a}' and instead saw '{b}'.\",W117:\"'{a}' is not defined.\",W118:\"'{a}' is only available in Mozilla JavaScript extensions (use moz option).\",W119:\"'{a}' is only available in ES{b} (use 'esversion: {b}').\",W120:\"You might be leaking a variable ({a}) here.\",W121:\"Extending prototype of native object: '{a}'.\",W122:\"Invalid typeof value '{a}'\",W123:\"'{a}' is already defined in outer scope.\",W124:\"A generator function shall contain a yield statement.\",W125:\"This line contains non-breaking spaces: http://jshint.com/doc/options/#nonbsp\",W126:\"Unnecessary grouping operator.\",W127:\"Unexpected use of a comma operator.\",W128:\"Empty array elements acequire elision=true.\",W129:\"'{a}' is defined in a future version of JavaScript. Use a different variable name to avoid migration issues.\",W130:\"Invalid element after rest element.\",W131:\"Invalid parameter after rest parameter.\",W132:\"`var` declarations are forbidden. Use `let` or `const` instead.\",W133:\"Invalid for-{a} loop left-hand-side: {b}.\",W134:\"The '{a}' option is only available when linting ECMAScript {b} code.\",W135:\"{a} may not be supported by non-browser environments.\",W136:\"'{a}' must be in function scope.\",W137:\"Empty destructuring.\",W138:\"Regular parameters should not come after default parameters.\"},info={I001:\"Comma warnings can be turned off with 'laxcomma'.\",I002:null,I003:\"ES5 option is now set per default\"};exports.errors={},exports.warnings={},exports.info={},_.each(errors,function(desc,code){exports.errors[code]={code:code,desc:desc}}),_.each(warnings,function(desc,code){exports.warnings[code]={code:code,desc:desc}}),_.each(info,function(desc,code){exports.info[code]={code:code,desc:desc}})},{\"../lodash\":\"/node_modules/jshint/lodash.js\"}],\"/node_modules/jshint/src/name-stack.js\":[function(_dereq_,module){\"use strict\";function NameStack(){this._stack=[]}Object.defineProperty(NameStack.prototype,\"length\",{get:function(){return this._stack.length}}),NameStack.prototype.push=function(){this._stack.push(null)},NameStack.prototype.pop=function(){this._stack.pop()},NameStack.prototype.set=function(token){this._stack[this.length-1]=token},NameStack.prototype.infer=function(){var type,nameToken=this._stack[this.length-1],prefix=\"\";return nameToken&&\"class\"!==nameToken.type||(nameToken=this._stack[this.length-2]),nameToken?(type=nameToken.type,\"(string)\"!==type&&\"(number)\"!==type&&\"(identifier)\"!==type&&\"default\"!==type?\"(expression)\":(nameToken.accessorType&&(prefix=nameToken.accessorType+\" \"),prefix+nameToken.value)):\"(empty)\"},module.exports=NameStack},{}],\"/node_modules/jshint/src/options.js\":[function(_dereq_,module,exports){\"use strict\";exports.bool={enforcing:{bitwise:!0,freeze:!0,camelcase:!0,curly:!0,eqeqeq:!0,futurehostile:!0,notypeof:!0,es3:!0,es5:!0,forin:!0,funcscope:!0,immed:!0,iterator:!0,newcap:!0,noarg:!0,nocomma:!0,noempty:!0,nonbsp:!0,nonew:!0,undef:!0,singleGroups:!1,varstmt:!1,enforceall:!1},relaxing:{asi:!0,multistr:!0,debug:!0,boss:!0,evil:!0,globalstrict:!0,plusplus:!0,proto:!0,scripturl:!0,sub:!0,supernew:!0,laxbreak:!0,laxcomma:!0,validthis:!0,withstmt:!0,moz:!0,noyield:!0,eqnull:!0,lastsemic:!0,loopfunc:!0,expr:!0,esnext:!0,elision:!0},environments:{mootools:!0,couch:!0,jasmine:!0,jquery:!0,node:!0,qunit:!0,rhino:!0,shelljs:!0,prototypejs:!0,yui:!0,mocha:!0,module:!0,wsh:!0,worker:!0,nonstandard:!0,browser:!0,browserify:!0,devel:!0,dojo:!0,typed:!0,phantom:!0},obsolete:{onecase:!0,regexp:!0,regexdash:!0}},exports.val={maxlen:!1,indent:!1,maxerr:!1,predef:!1,globals:!1,quotmark:!1,scope:!1,maxstatements:!1,maxdepth:!1,maxparams:!1,maxcomplexity:!1,shadow:!1,strict:!0,unused:!0,latedef:!1,ignore:!1,ignoreDelimiters:!1,esversion:5},exports.inverted={bitwise:!0,forin:!0,newcap:!0,plusplus:!0,regexp:!0,undef:!0,eqeqeq:!0,strict:!0},exports.validNames=Object.keys(exports.val).concat(Object.keys(exports.bool.relaxing)).concat(Object.keys(exports.bool.enforcing)).concat(Object.keys(exports.bool.obsolete)).concat(Object.keys(exports.bool.environments)),exports.renamed={eqeq:\"eqeqeq\",windows:\"wsh\",sloppy:\"strict\"},exports.removed={nomen:!0,onevar:!0,passfail:!0,white:!0,gcl:!0,smarttabs:!0,trailing:!0},exports.noenforceall={varstmt:!0,strict:!0}},{}],\"/node_modules/jshint/src/reg.js\":[function(_dereq_,module,exports){\"use strict\";exports.unsafeString=/@cc|<\\/?|script|\\]\\s*\\]|<\\s*!|&lt/i,exports.unsafeChars=/[\\u0000-\\u001f\\u007f-\\u009f\\u00ad\\u0600-\\u0604\\u070f\\u17b4\\u17b5\\u200c-\\u200f\\u2028-\\u202f\\u2060-\\u206f\\ufeff\\ufff0-\\uffff]/,exports.needEsc=/[\\u0000-\\u001f&<\"\\/\\\\\\u007f-\\u009f\\u00ad\\u0600-\\u0604\\u070f\\u17b4\\u17b5\\u200c-\\u200f\\u2028-\\u202f\\u2060-\\u206f\\ufeff\\ufff0-\\uffff]/,exports.needEscGlobal=/[\\u0000-\\u001f&<\"\\/\\\\\\u007f-\\u009f\\u00ad\\u0600-\\u0604\\u070f\\u17b4\\u17b5\\u200c-\\u200f\\u2028-\\u202f\\u2060-\\u206f\\ufeff\\ufff0-\\uffff]/g,exports.starSlash=/\\*\\//,exports.identifier=/^([a-zA-Z_$][a-zA-Z0-9_$]*)$/,exports.javascriptURL=/^(?:javascript|jscript|ecmascript|vbscript|livescript)\\s*:/i,exports.fallsThrough=/^\\s*falls?\\sthrough\\s*$/,exports.maxlenException=/^(?:(?:\\/\\/|\\/\\*|\\*) ?)?[^ ]+$/},{}],\"/node_modules/jshint/src/scope-manager.js\":[function(_dereq_,module){\"use strict\";var _=_dereq_(\"../lodash\"),events=_dereq_(\"events\"),marker={},scopeManager=function(state,predefined,exported,declared){function _newScope(type){_current={\"(labels)\":Object.create(null),\"(usages)\":Object.create(null),\"(breakLabels)\":Object.create(null),\"(parent)\":_current,\"(type)\":type,\"(params)\":\"functionparams\"===type||\"catchparams\"===type?[]:null},_scopeStack.push(_current)}function warning(code,token){emitter.emit(\"warning\",{code:code,token:token,data:_.slice(arguments,2)})}function error(code,token){emitter.emit(\"warning\",{code:code,token:token,data:_.slice(arguments,2)})}function _setupUsages(labelName){_current[\"(usages)\"][labelName]||(_current[\"(usages)\"][labelName]={\"(modified)\":[],\"(reassigned)\":[],\"(tokens)\":[]})}function _checkForUnused(){if(\"functionparams\"===_current[\"(type)\"])return _checkParams(),void 0;var curentLabels=_current[\"(labels)\"];for(var labelName in curentLabels)curentLabels[labelName]&&\"exception\"!==curentLabels[labelName][\"(type)\"]&&curentLabels[labelName][\"(unused)\"]&&_warnUnused(labelName,curentLabels[labelName][\"(token)\"],\"var\")}function _checkParams(){var params=_current[\"(params)\"];if(params)for(var unused_opt,param=params.pop();param;){var label=_current[\"(labels)\"][param];if(unused_opt=_getUnusedOption(state.funct[\"(unusedOption)\"]),\"undefined\"===param)return;if(label[\"(unused)\"])_warnUnused(param,label[\"(token)\"],\"param\",state.funct[\"(unusedOption)\"]);else if(\"last-param\"===unused_opt)return;param=params.pop()}}function _getLabel(labelName){for(var i=_scopeStack.length-1;i>=0;--i){var scopeLabels=_scopeStack[i][\"(labels)\"];if(scopeLabels[labelName])return scopeLabels}}function usedSoFarInCurrentFunction(labelName){for(var i=_scopeStack.length-1;i>=0;i--){var current=_scopeStack[i];if(current[\"(usages)\"][labelName])return current[\"(usages)\"][labelName];if(current===_currentFunctBody)break}return!1}function _checkOuterShadow(labelName,token){if(\"outer\"===state.option.shadow)for(var isGlobal=\"global\"===_currentFunctBody[\"(type)\"],isNewFunction=\"functionparams\"===_current[\"(type)\"],outsideCurrentFunction=!isGlobal,i=0;_scopeStack.length>i;i++){var stackItem=_scopeStack[i];isNewFunction||_scopeStack[i+1]!==_currentFunctBody||(outsideCurrentFunction=!1),outsideCurrentFunction&&stackItem[\"(labels)\"][labelName]&&warning(\"W123\",token,labelName),stackItem[\"(breakLabels)\"][labelName]&&warning(\"W123\",token,labelName)}}function _latedefWarning(type,labelName,token){state.option.latedef&&(state.option.latedef===!0&&\"function\"===type||\"function\"!==type)&&warning(\"W003\",token,labelName)}var _current,_scopeStack=[];_newScope(\"global\"),_current[\"(predefined)\"]=predefined;var _currentFunctBody=_current,usedPredefinedAndGlobals=Object.create(null),impliedGlobals=Object.create(null),unuseds=[],emitter=new events.EventEmitter,_getUnusedOption=function(unused_opt){return void 0===unused_opt&&(unused_opt=state.option.unused),unused_opt===!0&&(unused_opt=\"last-param\"),unused_opt},_warnUnused=function(name,tkn,type,unused_opt){var line=tkn.line,chr=tkn.from,raw_name=tkn.raw_text||name;unused_opt=_getUnusedOption(unused_opt);var warnable_types={vars:[\"var\"],\"last-param\":[\"var\",\"param\"],strict:[\"var\",\"param\",\"last-param\"]};unused_opt&&warnable_types[unused_opt]&&-1!==warnable_types[unused_opt].indexOf(type)&&warning(\"W098\",{line:line,from:chr},raw_name),(unused_opt||\"var\"===type)&&unuseds.push({name:name,line:line,character:chr})},scopeManagerInst={on:function(names,listener){names.split(\" \").forEach(function(name){emitter.on(name,listener)})},isPredefined:function(labelName){return!this.has(labelName)&&_.has(_scopeStack[0][\"(predefined)\"],labelName)},stack:function(type){var previousScope=_current;_newScope(type),type||\"functionparams\"!==previousScope[\"(type)\"]||(_current[\"(isFuncBody)\"]=!0,_current[\"(context)\"]=_currentFunctBody,_currentFunctBody=_current)},unstack:function(){var i,j,subScope=_scopeStack.length>1?_scopeStack[_scopeStack.length-2]:null,isUnstackingFunctionBody=_current===_currentFunctBody,isUnstackingFunctionParams=\"functionparams\"===_current[\"(type)\"],isUnstackingFunctionOuter=\"functionouter\"===_current[\"(type)\"],currentUsages=_current[\"(usages)\"],currentLabels=_current[\"(labels)\"],usedLabelNameList=Object.keys(currentUsages);for(currentUsages.__proto__&&-1===usedLabelNameList.indexOf(\"__proto__\")&&usedLabelNameList.push(\"__proto__\"),i=0;usedLabelNameList.length>i;i++){var usedLabelName=usedLabelNameList[i],usage=currentUsages[usedLabelName],usedLabel=currentLabels[usedLabelName];if(usedLabel){var usedLabelType=usedLabel[\"(type)\"];if(usedLabel[\"(useOutsideOfScope)\"]&&!state.option.funcscope){var usedTokens=usage[\"(tokens)\"];if(usedTokens)for(j=0;usedTokens.length>j;j++)usedLabel[\"(function)\"]===usedTokens[j][\"(function)\"]&&error(\"W038\",usedTokens[j],usedLabelName)}if(_current[\"(labels)\"][usedLabelName][\"(unused)\"]=!1,\"const\"===usedLabelType&&usage[\"(modified)\"])for(j=0;usage[\"(modified)\"].length>j;j++)error(\"E013\",usage[\"(modified)\"][j],usedLabelName);if((\"function\"===usedLabelType||\"class\"===usedLabelType)&&usage[\"(reassigned)\"])for(j=0;usage[\"(reassigned)\"].length>j;j++)error(\"W021\",usage[\"(reassigned)\"][j],usedLabelName,usedLabelType)}else if(isUnstackingFunctionOuter&&(state.funct[\"(isCapturing)\"]=!0),subScope)if(subScope[\"(usages)\"][usedLabelName]){var subScopeUsage=subScope[\"(usages)\"][usedLabelName];subScopeUsage[\"(modified)\"]=subScopeUsage[\"(modified)\"].concat(usage[\"(modified)\"]),subScopeUsage[\"(tokens)\"]=subScopeUsage[\"(tokens)\"].concat(usage[\"(tokens)\"]),subScopeUsage[\"(reassigned)\"]=subScopeUsage[\"(reassigned)\"].concat(usage[\"(reassigned)\"]),subScopeUsage[\"(onlyUsedSubFunction)\"]=!1}else subScope[\"(usages)\"][usedLabelName]=usage,isUnstackingFunctionBody&&(subScope[\"(usages)\"][usedLabelName][\"(onlyUsedSubFunction)\"]=!0);else if(\"boolean\"==typeof _current[\"(predefined)\"][usedLabelName]){if(delete declared[usedLabelName],usedPredefinedAndGlobals[usedLabelName]=marker,_current[\"(predefined)\"][usedLabelName]===!1&&usage[\"(reassigned)\"])for(j=0;usage[\"(reassigned)\"].length>j;j++)warning(\"W020\",usage[\"(reassigned)\"][j])}else if(usage[\"(tokens)\"])for(j=0;usage[\"(tokens)\"].length>j;j++){var undefinedToken=usage[\"(tokens)\"][j];undefinedToken.forgiveUndef||(state.option.undef&&!undefinedToken.ignoreUndef&&warning(\"W117\",undefinedToken,usedLabelName),impliedGlobals[usedLabelName]?impliedGlobals[usedLabelName].line.push(undefinedToken.line):impliedGlobals[usedLabelName]={name:usedLabelName,line:[undefinedToken.line]})}}if(subScope||Object.keys(declared).forEach(function(labelNotUsed){_warnUnused(labelNotUsed,declared[labelNotUsed],\"var\")}),subScope&&!isUnstackingFunctionBody&&!isUnstackingFunctionParams&&!isUnstackingFunctionOuter){var labelNames=Object.keys(currentLabels);for(i=0;labelNames.length>i;i++){var defLabelName=labelNames[i];currentLabels[defLabelName][\"(blockscoped)\"]||\"exception\"===currentLabels[defLabelName][\"(type)\"]||this.funct.has(defLabelName,{excludeCurrent:!0})||(subScope[\"(labels)\"][defLabelName]=currentLabels[defLabelName],\"global\"!==_currentFunctBody[\"(type)\"]&&(subScope[\"(labels)\"][defLabelName][\"(useOutsideOfScope)\"]=!0),delete currentLabels[defLabelName])}}_checkForUnused(),_scopeStack.pop(),isUnstackingFunctionBody&&(_currentFunctBody=_scopeStack[_.findLastIndex(_scopeStack,function(scope){return scope[\"(isFuncBody)\"]||\"global\"===scope[\"(type)\"]})]),_current=subScope},addParam:function(labelName,token,type){if(type=type||\"param\",\"exception\"===type){var previouslyDefinedLabelType=this.funct.labeltype(labelName);previouslyDefinedLabelType&&\"exception\"!==previouslyDefinedLabelType&&(state.option.node||warning(\"W002\",state.tokens.next,labelName))}if(_.has(_current[\"(labels)\"],labelName)?_current[\"(labels)\"][labelName].duplicated=!0:(_checkOuterShadow(labelName,token,type),_current[\"(labels)\"][labelName]={\"(type)\":type,\"(token)\":token,\"(unused)\":!0},_current[\"(params)\"].push(labelName)),_.has(_current[\"(usages)\"],labelName)){var usage=_current[\"(usages)\"][labelName];usage[\"(onlyUsedSubFunction)\"]?_latedefWarning(type,labelName,token):warning(\"E056\",token,labelName,type)}},validateParams:function(){if(\"global\"!==_currentFunctBody[\"(type)\"]){var isStrict=state.isStrict(),currentFunctParamScope=_currentFunctBody[\"(parent)\"];currentFunctParamScope[\"(params)\"]&&currentFunctParamScope[\"(params)\"].forEach(function(labelName){var label=currentFunctParamScope[\"(labels)\"][labelName];label&&label.duplicated&&(isStrict?warning(\"E011\",label[\"(token)\"],labelName):state.option.shadow!==!0&&warning(\"W004\",label[\"(token)\"],labelName))})}},getUsedOrDefinedGlobals:function(){var list=Object.keys(usedPredefinedAndGlobals);return usedPredefinedAndGlobals.__proto__===marker&&-1===list.indexOf(\"__proto__\")&&list.push(\"__proto__\"),list},getImpliedGlobals:function(){var values=_.values(impliedGlobals),hasProto=!1;return impliedGlobals.__proto__&&(hasProto=values.some(function(value){return\"__proto__\"===value.name}),hasProto||values.push(impliedGlobals.__proto__)),values},getUnuseds:function(){return unuseds},has:function(labelName){return Boolean(_getLabel(labelName))},labeltype:function(labelName){var scopeLabels=_getLabel(labelName);return scopeLabels?scopeLabels[labelName][\"(type)\"]:null},addExported:function(labelName){var globalLabels=_scopeStack[0][\"(labels)\"];if(_.has(declared,labelName))delete declared[labelName];else if(_.has(globalLabels,labelName))globalLabels[labelName][\"(unused)\"]=!1;else{for(var i=1;_scopeStack.length>i;i++){var scope=_scopeStack[i];if(scope[\"(type)\"])break;if(_.has(scope[\"(labels)\"],labelName)&&!scope[\"(labels)\"][labelName][\"(blockscoped)\"])return scope[\"(labels)\"][labelName][\"(unused)\"]=!1,void 0}exported[labelName]=!0}},setExported:function(labelName,token){this.block.use(labelName,token)\n},addlabel:function(labelName,opts){var type=opts.type,token=opts.token,isblockscoped=\"let\"===type||\"const\"===type||\"class\"===type,isexported=\"global\"===(isblockscoped?_current:_currentFunctBody)[\"(type)\"]&&_.has(exported,labelName);if(_checkOuterShadow(labelName,token,type),isblockscoped){var declaredInCurrentScope=_current[\"(labels)\"][labelName];if(declaredInCurrentScope||_current!==_currentFunctBody||\"global\"===_current[\"(type)\"]||(declaredInCurrentScope=!!_currentFunctBody[\"(parent)\"][\"(labels)\"][labelName]),!declaredInCurrentScope&&_current[\"(usages)\"][labelName]){var usage=_current[\"(usages)\"][labelName];usage[\"(onlyUsedSubFunction)\"]?_latedefWarning(type,labelName,token):warning(\"E056\",token,labelName,type)}declaredInCurrentScope?warning(\"E011\",token,labelName):\"outer\"===state.option.shadow&&scopeManagerInst.funct.has(labelName)&&warning(\"W004\",token,labelName),scopeManagerInst.block.add(labelName,type,token,!isexported)}else{var declaredInCurrentFunctionScope=scopeManagerInst.funct.has(labelName);!declaredInCurrentFunctionScope&&usedSoFarInCurrentFunction(labelName)&&_latedefWarning(type,labelName,token),scopeManagerInst.funct.has(labelName,{onlyBlockscoped:!0})?warning(\"E011\",token,labelName):state.option.shadow!==!0&&declaredInCurrentFunctionScope&&\"__proto__\"!==labelName&&\"global\"!==_currentFunctBody[\"(type)\"]&&warning(\"W004\",token,labelName),scopeManagerInst.funct.add(labelName,type,token,!isexported),\"global\"===_currentFunctBody[\"(type)\"]&&(usedPredefinedAndGlobals[labelName]=marker)}},funct:{labeltype:function(labelName,options){for(var onlyBlockscoped=options&&options.onlyBlockscoped,excludeParams=options&&options.excludeParams,currentScopeIndex=_scopeStack.length-(options&&options.excludeCurrent?2:1),i=currentScopeIndex;i>=0;i--){var current=_scopeStack[i];if(current[\"(labels)\"][labelName]&&(!onlyBlockscoped||current[\"(labels)\"][labelName][\"(blockscoped)\"]))return current[\"(labels)\"][labelName][\"(type)\"];var scopeCheck=excludeParams?_scopeStack[i-1]:current;if(scopeCheck&&\"functionparams\"===scopeCheck[\"(type)\"])return null}return null},hasBreakLabel:function(labelName){for(var i=_scopeStack.length-1;i>=0;i--){var current=_scopeStack[i];if(current[\"(breakLabels)\"][labelName])return!0;if(\"functionparams\"===current[\"(type)\"])return!1}return!1},has:function(labelName,options){return Boolean(this.labeltype(labelName,options))},add:function(labelName,type,tok,unused){_current[\"(labels)\"][labelName]={\"(type)\":type,\"(token)\":tok,\"(blockscoped)\":!1,\"(function)\":_currentFunctBody,\"(unused)\":unused}}},block:{isGlobal:function(){return\"global\"===_current[\"(type)\"]},use:function(labelName,token){var paramScope=_currentFunctBody[\"(parent)\"];paramScope&&paramScope[\"(labels)\"][labelName]&&\"param\"===paramScope[\"(labels)\"][labelName][\"(type)\"]&&(scopeManagerInst.funct.has(labelName,{excludeParams:!0,onlyBlockscoped:!0})||(paramScope[\"(labels)\"][labelName][\"(unused)\"]=!1)),token&&(state.ignored.W117||state.option.undef===!1)&&(token.ignoreUndef=!0),_setupUsages(labelName),token&&(token[\"(function)\"]=_currentFunctBody,_current[\"(usages)\"][labelName][\"(tokens)\"].push(token))},reassign:function(labelName,token){this.modify(labelName,token),_current[\"(usages)\"][labelName][\"(reassigned)\"].push(token)},modify:function(labelName,token){_setupUsages(labelName),_current[\"(usages)\"][labelName][\"(modified)\"].push(token)},add:function(labelName,type,tok,unused){_current[\"(labels)\"][labelName]={\"(type)\":type,\"(token)\":tok,\"(blockscoped)\":!0,\"(unused)\":unused}},addBreakLabel:function(labelName,opts){var token=opts.token;scopeManagerInst.funct.hasBreakLabel(labelName)?warning(\"E011\",token,labelName):\"outer\"===state.option.shadow&&(scopeManagerInst.funct.has(labelName)?warning(\"W004\",token,labelName):_checkOuterShadow(labelName,token)),_current[\"(breakLabels)\"][labelName]=token}}};return scopeManagerInst};module.exports=scopeManager},{\"../lodash\":\"/node_modules/jshint/lodash.js\",events:\"/node_modules/browserify/node_modules/events/events.js\"}],\"/node_modules/jshint/src/state.js\":[function(_dereq_,module,exports){\"use strict\";var NameStack=_dereq_(\"./name-stack.js\"),state={syntax:{},isStrict:function(){return this.directive[\"use strict\"]||this.inClassBody||this.option.module||\"implied\"===this.option.strict},inMoz:function(){return this.option.moz},inES6:function(){return this.option.moz||this.option.esversion>=6},inES5:function(strict){return strict?!(this.option.esversion&&5!==this.option.esversion||this.option.moz):!this.option.esversion||this.option.esversion>=5||this.option.moz},reset:function(){this.tokens={prev:null,next:null,curr:null},this.option={},this.funct=null,this.ignored={},this.directive={},this.jsonMode=!1,this.jsonWarnings=[],this.lines=[],this.tab=\"\",this.cache={},this.ignoredLines={},this.forinifcheckneeded=!1,this.nameStack=new NameStack,this.inClassBody=!1}};exports.state=state},{\"./name-stack.js\":\"/node_modules/jshint/src/name-stack.js\"}],\"/node_modules/jshint/src/style.js\":[function(_dereq_,module,exports){\"use strict\";exports.register=function(linter){linter.on(\"Identifier\",function(data){linter.getOption(\"proto\")||\"__proto__\"===data.name&&linter.warn(\"W103\",{line:data.line,\"char\":data.char,data:[data.name,\"6\"]})}),linter.on(\"Identifier\",function(data){linter.getOption(\"iterator\")||\"__iterator__\"===data.name&&linter.warn(\"W103\",{line:data.line,\"char\":data.char,data:[data.name]})}),linter.on(\"Identifier\",function(data){linter.getOption(\"camelcase\")&&data.name.replace(/^_+|_+$/g,\"\").indexOf(\"_\")>-1&&!data.name.match(/^[A-Z0-9_]*$/)&&linter.warn(\"W106\",{line:data.line,\"char\":data.from,data:[data.name]})}),linter.on(\"String\",function(data){var code,quotmark=linter.getOption(\"quotmark\");quotmark&&(\"single\"===quotmark&&\"'\"!==data.quote&&(code=\"W109\"),\"double\"===quotmark&&'\"'!==data.quote&&(code=\"W108\"),quotmark===!0&&(linter.getCache(\"quotmark\")||linter.setCache(\"quotmark\",data.quote),linter.getCache(\"quotmark\")!==data.quote&&(code=\"W110\")),code&&linter.warn(code,{line:data.line,\"char\":data.char}))}),linter.on(\"Number\",function(data){\".\"===data.value.charAt(0)&&linter.warn(\"W008\",{line:data.line,\"char\":data.char,data:[data.value]}),\".\"===data.value.substr(data.value.length-1)&&linter.warn(\"W047\",{line:data.line,\"char\":data.char,data:[data.value]}),/^00+/.test(data.value)&&linter.warn(\"W046\",{line:data.line,\"char\":data.char,data:[data.value]})}),linter.on(\"String\",function(data){var re=/^(?:javascript|jscript|ecmascript|vbscript|livescript)\\s*:/i;linter.getOption(\"scripturl\")||re.test(data.value)&&linter.warn(\"W107\",{line:data.line,\"char\":data.char})})}},{}],\"/node_modules/jshint/src/vars.js\":[function(_dereq_,module,exports){\"use strict\";exports.reservedVars={arguments:!1,NaN:!1},exports.ecmaIdentifiers={3:{Array:!1,Boolean:!1,Date:!1,decodeURI:!1,decodeURIComponent:!1,encodeURI:!1,encodeURIComponent:!1,Error:!1,eval:!1,EvalError:!1,Function:!1,hasOwnProperty:!1,isFinite:!1,isNaN:!1,Math:!1,Number:!1,Object:!1,parseInt:!1,parseFloat:!1,RangeError:!1,ReferenceError:!1,RegExp:!1,String:!1,SyntaxError:!1,TypeError:!1,URIError:!1},5:{JSON:!1},6:{Map:!1,Promise:!1,Proxy:!1,Reflect:!1,Set:!1,Symbol:!1,WeakMap:!1,WeakSet:!1}},exports.browser={Audio:!1,Blob:!1,addEventListener:!1,applicationCache:!1,atob:!1,blur:!1,btoa:!1,cancelAnimationFrame:!1,CanvasGradient:!1,CanvasPattern:!1,CanvasRenderingContext2D:!1,CSS:!1,clearInterval:!1,clearTimeout:!1,close:!1,closed:!1,Comment:!1,CustomEvent:!1,DOMParser:!1,defaultStatus:!1,Document:!1,document:!1,DocumentFragment:!1,Element:!1,ElementTimeControl:!1,Event:!1,event:!1,fetch:!1,FileReader:!1,FormData:!1,focus:!1,frames:!1,getComputedStyle:!1,HTMLElement:!1,HTMLAnchorElement:!1,HTMLBaseElement:!1,HTMLBlockquoteElement:!1,HTMLBodyElement:!1,HTMLBRElement:!1,HTMLButtonElement:!1,HTMLCanvasElement:!1,HTMLCollection:!1,HTMLDirectoryElement:!1,HTMLDivElement:!1,HTMLDListElement:!1,HTMLFieldSetElement:!1,HTMLFontElement:!1,HTMLFormElement:!1,HTMLFrameElement:!1,HTMLFrameSetElement:!1,HTMLHeadElement:!1,HTMLHeadingElement:!1,HTMLHRElement:!1,HTMLHtmlElement:!1,HTMLIFrameElement:!1,HTMLImageElement:!1,HTMLInputElement:!1,HTMLIsIndexElement:!1,HTMLLabelElement:!1,HTMLLayerElement:!1,HTMLLegendElement:!1,HTMLLIElement:!1,HTMLLinkElement:!1,HTMLMapElement:!1,HTMLMenuElement:!1,HTMLMetaElement:!1,HTMLModElement:!1,HTMLObjectElement:!1,HTMLOListElement:!1,HTMLOptGroupElement:!1,HTMLOptionElement:!1,HTMLParagraphElement:!1,HTMLParamElement:!1,HTMLPreElement:!1,HTMLQuoteElement:!1,HTMLScriptElement:!1,HTMLSelectElement:!1,HTMLStyleElement:!1,HTMLTableCaptionElement:!1,HTMLTableCellElement:!1,HTMLTableColElement:!1,HTMLTableElement:!1,HTMLTableRowElement:!1,HTMLTableSectionElement:!1,HTMLTemplateElement:!1,HTMLTextAreaElement:!1,HTMLTitleElement:!1,HTMLUListElement:!1,HTMLVideoElement:!1,history:!1,Image:!1,Intl:!1,length:!1,localStorage:!1,location:!1,matchMedia:!1,MessageChannel:!1,MessageEvent:!1,MessagePort:!1,MouseEvent:!1,moveBy:!1,moveTo:!1,MutationObserver:!1,name:!1,Node:!1,NodeFilter:!1,NodeList:!1,Notification:!1,navigator:!1,onbeforeunload:!0,onblur:!0,onerror:!0,onfocus:!0,onload:!0,onresize:!0,onunload:!0,open:!1,openDatabase:!1,opener:!1,Option:!1,parent:!1,performance:!1,print:!1,Range:!1,requestAnimationFrame:!1,removeEventListener:!1,resizeBy:!1,resizeTo:!1,screen:!1,scroll:!1,scrollBy:!1,scrollTo:!1,sessionStorage:!1,setInterval:!1,setTimeout:!1,SharedWorker:!1,status:!1,SVGAElement:!1,SVGAltGlyphDefElement:!1,SVGAltGlyphElement:!1,SVGAltGlyphItemElement:!1,SVGAngle:!1,SVGAnimateColorElement:!1,SVGAnimateElement:!1,SVGAnimateMotionElement:!1,SVGAnimateTransformElement:!1,SVGAnimatedAngle:!1,SVGAnimatedBoolean:!1,SVGAnimatedEnumeration:!1,SVGAnimatedInteger:!1,SVGAnimatedLength:!1,SVGAnimatedLengthList:!1,SVGAnimatedNumber:!1,SVGAnimatedNumberList:!1,SVGAnimatedPathData:!1,SVGAnimatedPoints:!1,SVGAnimatedPreserveAspectRatio:!1,SVGAnimatedRect:!1,SVGAnimatedString:!1,SVGAnimatedTransformList:!1,SVGAnimationElement:!1,SVGCSSRule:!1,SVGCircleElement:!1,SVGClipPathElement:!1,SVGColor:!1,SVGColorProfileElement:!1,SVGColorProfileRule:!1,SVGComponentTransferFunctionElement:!1,SVGCursorElement:!1,SVGDefsElement:!1,SVGDescElement:!1,SVGDocument:!1,SVGElement:!1,SVGElementInstance:!1,SVGElementInstanceList:!1,SVGEllipseElement:!1,SVGExternalResourcesRequired:!1,SVGFEBlendElement:!1,SVGFEColorMatrixElement:!1,SVGFEComponentTransferElement:!1,SVGFECompositeElement:!1,SVGFEConvolveMatrixElement:!1,SVGFEDiffuseLightingElement:!1,SVGFEDisplacementMapElement:!1,SVGFEDistantLightElement:!1,SVGFEFloodElement:!1,SVGFEFuncAElement:!1,SVGFEFuncBElement:!1,SVGFEFuncGElement:!1,SVGFEFuncRElement:!1,SVGFEGaussianBlurElement:!1,SVGFEImageElement:!1,SVGFEMergeElement:!1,SVGFEMergeNodeElement:!1,SVGFEMorphologyElement:!1,SVGFEOffsetElement:!1,SVGFEPointLightElement:!1,SVGFESpecularLightingElement:!1,SVGFESpotLightElement:!1,SVGFETileElement:!1,SVGFETurbulenceElement:!1,SVGFilterElement:!1,SVGFilterPrimitiveStandardAttributes:!1,SVGFitToViewBox:!1,SVGFontElement:!1,SVGFontFaceElement:!1,SVGFontFaceFormatElement:!1,SVGFontFaceNameElement:!1,SVGFontFaceSrcElement:!1,SVGFontFaceUriElement:!1,SVGForeignObjectElement:!1,SVGGElement:!1,SVGGlyphElement:!1,SVGGlyphRefElement:!1,SVGGradientElement:!1,SVGHKernElement:!1,SVGICCColor:!1,SVGImageElement:!1,SVGLangSpace:!1,SVGLength:!1,SVGLengthList:!1,SVGLineElement:!1,SVGLinearGradientElement:!1,SVGLocatable:!1,SVGMPathElement:!1,SVGMarkerElement:!1,SVGMaskElement:!1,SVGMatrix:!1,SVGMetadataElement:!1,SVGMissingGlyphElement:!1,SVGNumber:!1,SVGNumberList:!1,SVGPaint:!1,SVGPathElement:!1,SVGPathSeg:!1,SVGPathSegArcAbs:!1,SVGPathSegArcRel:!1,SVGPathSegClosePath:!1,SVGPathSegCurvetoCubicAbs:!1,SVGPathSegCurvetoCubicRel:!1,SVGPathSegCurvetoCubicSmoothAbs:!1,SVGPathSegCurvetoCubicSmoothRel:!1,SVGPathSegCurvetoQuadraticAbs:!1,SVGPathSegCurvetoQuadraticRel:!1,SVGPathSegCurvetoQuadraticSmoothAbs:!1,SVGPathSegCurvetoQuadraticSmoothRel:!1,SVGPathSegLinetoAbs:!1,SVGPathSegLinetoHorizontalAbs:!1,SVGPathSegLinetoHorizontalRel:!1,SVGPathSegLinetoRel:!1,SVGPathSegLinetoVerticalAbs:!1,SVGPathSegLinetoVerticalRel:!1,SVGPathSegList:!1,SVGPathSegMovetoAbs:!1,SVGPathSegMovetoRel:!1,SVGPatternElement:!1,SVGPoint:!1,SVGPointList:!1,SVGPolygonElement:!1,SVGPolylineElement:!1,SVGPreserveAspectRatio:!1,SVGRadialGradientElement:!1,SVGRect:!1,SVGRectElement:!1,SVGRenderingIntent:!1,SVGSVGElement:!1,SVGScriptElement:!1,SVGSetElement:!1,SVGStopElement:!1,SVGStringList:!1,SVGStylable:!1,SVGStyleElement:!1,SVGSwitchElement:!1,SVGSymbolElement:!1,SVGTRefElement:!1,SVGTSpanElement:!1,SVGTests:!1,SVGTextContentElement:!1,SVGTextElement:!1,SVGTextPathElement:!1,SVGTextPositioningElement:!1,SVGTitleElement:!1,SVGTransform:!1,SVGTransformList:!1,SVGTransformable:!1,SVGURIReference:!1,SVGUnitTypes:!1,SVGUseElement:!1,SVGVKernElement:!1,SVGViewElement:!1,SVGViewSpec:!1,SVGZoomAndPan:!1,Text:!1,TextDecoder:!1,TextEncoder:!1,TimeEvent:!1,top:!1,URL:!1,WebGLActiveInfo:!1,WebGLBuffer:!1,WebGLContextEvent:!1,WebGLFramebuffer:!1,WebGLProgram:!1,WebGLRenderbuffer:!1,WebGLRenderingContext:!1,WebGLShader:!1,WebGLShaderPrecisionFormat:!1,WebGLTexture:!1,WebGLUniformLocation:!1,WebSocket:!1,window:!1,Window:!1,Worker:!1,XDomainRequest:!1,XMLHttpRequest:!1,XMLSerializer:!1,XPathEvaluator:!1,XPathException:!1,XPathExpression:!1,XPathNamespace:!1,XPathNSResolver:!1,XPathResult:!1},exports.devel={alert:!1,confirm:!1,console:!1,Debug:!1,opera:!1,prompt:!1},exports.worker={importScripts:!0,postMessage:!0,self:!0,FileReaderSync:!0},exports.nonstandard={escape:!1,unescape:!1},exports.couch={require:!1,respond:!1,getRow:!1,emit:!1,send:!1,start:!1,sum:!1,log:!1,exports:!1,module:!1,provides:!1},exports.node={__filename:!1,__dirname:!1,GLOBAL:!1,global:!1,module:!1,acequire:!1,Buffer:!0,console:!0,exports:!0,process:!0,setTimeout:!0,clearTimeout:!0,setInterval:!0,clearInterval:!0,setImmediate:!0,clearImmediate:!0},exports.browserify={__filename:!1,__dirname:!1,global:!1,module:!1,acequire:!1,Buffer:!0,exports:!0,process:!0},exports.phantom={phantom:!0,acequire:!0,WebPage:!0,console:!0,exports:!0},exports.qunit={asyncTest:!1,deepEqual:!1,equal:!1,expect:!1,module:!1,notDeepEqual:!1,notEqual:!1,notPropEqual:!1,notStrictEqual:!1,ok:!1,propEqual:!1,QUnit:!1,raises:!1,start:!1,stop:!1,strictEqual:!1,test:!1,\"throws\":!1},exports.rhino={defineClass:!1,deserialize:!1,gc:!1,help:!1,importClass:!1,importPackage:!1,java:!1,load:!1,loadClass:!1,Packages:!1,print:!1,quit:!1,readFile:!1,readUrl:!1,runCommand:!1,seal:!1,serialize:!1,spawn:!1,sync:!1,toint32:!1,version:!1},exports.shelljs={target:!1,echo:!1,exit:!1,cd:!1,pwd:!1,ls:!1,find:!1,cp:!1,rm:!1,mv:!1,mkdir:!1,test:!1,cat:!1,sed:!1,grep:!1,which:!1,dirs:!1,pushd:!1,popd:!1,env:!1,exec:!1,chmod:!1,config:!1,error:!1,tempdir:!1},exports.typed={ArrayBuffer:!1,ArrayBufferView:!1,DataView:!1,Float32Array:!1,Float64Array:!1,Int16Array:!1,Int32Array:!1,Int8Array:!1,Uint16Array:!1,Uint32Array:!1,Uint8Array:!1,Uint8ClampedArray:!1},exports.wsh={ActiveXObject:!0,Enumerator:!0,GetObject:!0,ScriptEngine:!0,ScriptEngineBuildVersion:!0,ScriptEngineMajorVersion:!0,ScriptEngineMinorVersion:!0,VBArray:!0,WSH:!0,WScript:!0,XDomainRequest:!0},exports.dojo={dojo:!1,dijit:!1,dojox:!1,define:!1,require:!1},exports.jquery={$:!1,jQuery:!1},exports.mootools={$:!1,$$:!1,Asset:!1,Browser:!1,Chain:!1,Class:!1,Color:!1,Cookie:!1,Core:!1,Document:!1,DomReady:!1,DOMEvent:!1,DOMReady:!1,Drag:!1,Element:!1,Elements:!1,Event:!1,Events:!1,Fx:!1,Group:!1,Hash:!1,HtmlTable:!1,IFrame:!1,IframeShim:!1,InputValidator:!1,instanceOf:!1,Keyboard:!1,Locale:!1,Mask:!1,MooTools:!1,Native:!1,Options:!1,OverText:!1,Request:!1,Scroller:!1,Slick:!1,Slider:!1,Sortables:!1,Spinner:!1,Swiff:!1,Tips:!1,Type:!1,typeOf:!1,URI:!1,Window:!1},exports.prototypejs={$:!1,$$:!1,$A:!1,$F:!1,$H:!1,$R:!1,$break:!1,$continue:!1,$w:!1,Abstract:!1,Ajax:!1,Class:!1,Enumerable:!1,Element:!1,Event:!1,Field:!1,Form:!1,Hash:!1,Insertion:!1,ObjectRange:!1,PeriodicalExecuter:!1,Position:!1,Prototype:!1,Selector:!1,Template:!1,Toggle:!1,Try:!1,Autocompleter:!1,Builder:!1,Control:!1,Draggable:!1,Draggables:!1,Droppables:!1,Effect:!1,Sortable:!1,SortableObserver:!1,Sound:!1,Scriptaculous:!1},exports.yui={YUI:!1,Y:!1,YUI_config:!1},exports.mocha={mocha:!1,describe:!1,xdescribe:!1,it:!1,xit:!1,context:!1,xcontext:!1,before:!1,after:!1,beforeEach:!1,afterEach:!1,suite:!1,test:!1,setup:!1,teardown:!1,suiteSetup:!1,suiteTeardown:!1},exports.jasmine={jasmine:!1,describe:!1,xdescribe:!1,it:!1,xit:!1,beforeEach:!1,afterEach:!1,setFixtures:!1,loadFixtures:!1,spyOn:!1,expect:!1,runs:!1,waitsFor:!1,waits:!1,beforeAll:!1,afterAll:!1,fail:!1,fdescribe:!1,fit:!1,pending:!1}},{}]},{},[\"/node_modules/jshint/src/jshint.js\"])}),ace.define(\"ace/mode/javascript_worker\",[\"require\",\"exports\",\"module\",\"ace/lib/oop\",\"ace/worker/mirror\",\"ace/mode/javascript/jshint\"],function(acequire,exports,module){\"use strict\";function startRegex(arr){return RegExp(\"^(\"+arr.join(\"|\")+\")\")}var oop=acequire(\"../lib/oop\"),Mirror=acequire(\"../worker/mirror\").Mirror,lint=acequire(\"./javascript/jshint\").JSHINT,disabledWarningsRe=startRegex([\"Bad for in variable '(.+)'.\",'Missing \"use strict\"']),errorsRe=startRegex([\"Unexpected\",\"Expected \",\"Confusing (plus|minus)\",\"\\\\{a\\\\} unterminated regular expression\",\"Unclosed \",\"Unmatched \",\"Unbegun comment\",\"Bad invocation\",\"Missing space after\",\"Missing operator at\"]),infoRe=startRegex([\"Expected an assignment\",\"Bad escapement of EOL\",\"Unexpected comma\",\"Unexpected space\",\"Missing radix parameter.\",\"A leading decimal point can\",\"\\\\['{a}'\\\\] is better written in dot notation.\",\"'{a}' used out of scope\"]),JavaScriptWorker=exports.JavaScriptWorker=function(sender){Mirror.call(this,sender),this.setTimeout(500),this.setOptions()};oop.inherits(JavaScriptWorker,Mirror),function(){this.setOptions=function(options){this.options=options||{esnext:!0,moz:!0,devel:!0,browser:!0,node:!0,laxcomma:!0,laxbreak:!0,lastsemic:!0,onevar:!1,passfail:!1,maxerr:100,expr:!0,multistr:!0,globalstrict:!0},this.doc.getValue()&&this.deferredUpdate.schedule(100)},this.changeOptions=function(newOptions){oop.mixin(this.options,newOptions),this.doc.getValue()&&this.deferredUpdate.schedule(100)},this.isValidJS=function(str){try{eval(\"throw 0;\"+str)}catch(e){if(0===e)return!0}return!1},this.onUpdate=function(){var value=this.doc.getValue();if(value=value.replace(/^#!.*\\n/,\"\\n\"),!value)return this.sender.emit(\"annotate\",[]);var errors=[],maxErrorLevel=this.isValidJS(value)?\"warning\":\"error\";lint(value,this.options,this.options.globals);for(var results=lint.errors,errorAdded=!1,i=0;results.length>i;i++){var error=results[i];if(error){var raw=error.raw,type=\"warning\";if(\"Missing semicolon.\"==raw){var str=error.evidence.substr(error.character);str=str.charAt(str.search(/\\S/)),\"error\"==maxErrorLevel&&str&&/[\\w\\d{(['\"]/.test(str)?(error.reason='Missing \";\" before statement',type=\"error\"):type=\"info\"}else{if(disabledWarningsRe.test(raw))continue;infoRe.test(raw)?type=\"info\":errorsRe.test(raw)?(errorAdded=!0,type=maxErrorLevel):\"'{a}' is not defined.\"==raw?type=\"warning\":\"'{a}' is defined but never used.\"==raw&&(type=\"info\")}errors.push({row:error.line-1,column:error.character-1,text:error.reason,type:type,raw:raw})}}this.sender.emit(\"annotate\",errors)}}.call(JavaScriptWorker.prototype)}),ace.define(\"ace/lib/es5-shim\",[\"require\",\"exports\",\"module\"],function(){function Empty(){}function doesDefinePropertyWork(object){try{return Object.defineProperty(object,\"sentinel\",{}),\"sentinel\"in object}catch(exception){}}function toInteger(n){return n=+n,n!==n?n=0:0!==n&&n!==1/0&&n!==-(1/0)&&(n=(n>0||-1)*Math.floor(Math.abs(n))),n}Function.prototype.bind||(Function.prototype.bind=function(that){var target=this;if(\"function\"!=typeof target)throw new TypeError(\"Function.prototype.bind called on incompatible \"+target);var args=slice.call(arguments,1),bound=function(){if(this instanceof bound){var result=target.apply(this,args.concat(slice.call(arguments)));return Object(result)===result?result:this}return target.apply(that,args.concat(slice.call(arguments)))};return target.prototype&&(Empty.prototype=target.prototype,bound.prototype=new Empty,Empty.prototype=null),bound});var defineGetter,defineSetter,lookupGetter,lookupSetter,supportsAccessors,call=Function.prototype.call,prototypeOfArray=Array.prototype,prototypeOfObject=Object.prototype,slice=prototypeOfArray.slice,_toString=call.bind(prototypeOfObject.toString),owns=call.bind(prototypeOfObject.hasOwnProperty);if((supportsAccessors=owns(prototypeOfObject,\"__defineGetter__\"))&&(defineGetter=call.bind(prototypeOfObject.__defineGetter__),defineSetter=call.bind(prototypeOfObject.__defineSetter__),lookupGetter=call.bind(prototypeOfObject.__lookupGetter__),lookupSetter=call.bind(prototypeOfObject.__lookupSetter__)),2!=[1,2].splice(0).length)if(function(){function makeArray(l){var a=Array(l+2);return a[0]=a[1]=0,a}var lengthBefore,array=[];return array.splice.apply(array,makeArray(20)),array.splice.apply(array,makeArray(26)),lengthBefore=array.length,array.splice(5,0,\"XXX\"),lengthBefore+1==array.length,lengthBefore+1==array.length?!0:void 0}()){var array_splice=Array.prototype.splice;Array.prototype.splice=function(start,deleteCount){return arguments.length?array_splice.apply(this,[void 0===start?0:start,void 0===deleteCount?this.length-start:deleteCount].concat(slice.call(arguments,2))):[]}}else Array.prototype.splice=function(pos,removeCount){var length=this.length;pos>0?pos>length&&(pos=length):void 0==pos?pos=0:0>pos&&(pos=Math.max(length+pos,0)),length>pos+removeCount||(removeCount=length-pos);var removed=this.slice(pos,pos+removeCount),insert=slice.call(arguments,2),add=insert.length;if(pos===length)add&&this.push.apply(this,insert);else{var remove=Math.min(removeCount,length-pos),tailOldPos=pos+remove,tailNewPos=tailOldPos+add-remove,tailCount=length-tailOldPos,lengthAfterRemove=length-remove;if(tailOldPos>tailNewPos)for(var i=0;tailCount>i;++i)this[tailNewPos+i]=this[tailOldPos+i];else if(tailNewPos>tailOldPos)for(i=tailCount;i--;)this[tailNewPos+i]=this[tailOldPos+i];if(add&&pos===lengthAfterRemove)this.length=lengthAfterRemove,this.push.apply(this,insert);else for(this.length=lengthAfterRemove+add,i=0;add>i;++i)this[pos+i]=insert[i]}return removed};Array.isArray||(Array.isArray=function(obj){return\"[object Array]\"==_toString(obj)});var boxedString=Object(\"a\"),splitString=\"a\"!=boxedString[0]||!(0 in boxedString);if(Array.prototype.forEach||(Array.prototype.forEach=function(fun){var object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,thisp=arguments[1],i=-1,length=self.length>>>0;if(\"[object Function]\"!=_toString(fun))throw new TypeError;for(;length>++i;)i in self&&fun.call(thisp,self[i],i,object)}),Array.prototype.map||(Array.prototype.map=function(fun){var object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,length=self.length>>>0,result=Array(length),thisp=arguments[1];if(\"[object Function]\"!=_toString(fun))throw new TypeError(fun+\" is not a function\");for(var i=0;length>i;i++)i in self&&(result[i]=fun.call(thisp,self[i],i,object));return result}),Array.prototype.filter||(Array.prototype.filter=function(fun){var value,object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,length=self.length>>>0,result=[],thisp=arguments[1];if(\"[object Function]\"!=_toString(fun))throw new TypeError(fun+\" is not a function\");for(var i=0;length>i;i++)i in self&&(value=self[i],fun.call(thisp,value,i,object)&&result.push(value));return result}),Array.prototype.every||(Array.prototype.every=function(fun){var object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,length=self.length>>>0,thisp=arguments[1];if(\"[object Function]\"!=_toString(fun))throw new TypeError(fun+\" is not a function\");for(var i=0;length>i;i++)if(i in self&&!fun.call(thisp,self[i],i,object))return!1;return!0}),Array.prototype.some||(Array.prototype.some=function(fun){var object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,length=self.length>>>0,thisp=arguments[1];if(\"[object Function]\"!=_toString(fun))throw new TypeError(fun+\" is not a function\");for(var i=0;length>i;i++)if(i in self&&fun.call(thisp,self[i],i,object))return!0;return!1}),Array.prototype.reduce||(Array.prototype.reduce=function(fun){var object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,length=self.length>>>0;if(\"[object Function]\"!=_toString(fun))throw new TypeError(fun+\" is not a function\");if(!length&&1==arguments.length)throw new TypeError(\"reduce of empty array with no initial value\");var result,i=0;if(arguments.length>=2)result=arguments[1];else for(;;){if(i in self){result=self[i++];break}if(++i>=length)throw new TypeError(\"reduce of empty array with no initial value\")}for(;length>i;i++)i in self&&(result=fun.call(void 0,result,self[i],i,object));return result}),Array.prototype.reduceRight||(Array.prototype.reduceRight=function(fun){var object=toObject(this),self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):object,length=self.length>>>0;if(\"[object Function]\"!=_toString(fun))throw new TypeError(fun+\" is not a function\");if(!length&&1==arguments.length)throw new TypeError(\"reduceRight of empty array with no initial value\");var result,i=length-1;if(arguments.length>=2)result=arguments[1];else for(;;){if(i in self){result=self[i--];break}if(0>--i)throw new TypeError(\"reduceRight of empty array with no initial value\")}do i in this&&(result=fun.call(void 0,result,self[i],i,object));while(i--);return result}),Array.prototype.indexOf&&-1==[0,1].indexOf(1,2)||(Array.prototype.indexOf=function(sought){var self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):toObject(this),length=self.length>>>0;if(!length)return-1;var i=0;for(arguments.length>1&&(i=toInteger(arguments[1])),i=i>=0?i:Math.max(0,length+i);length>i;i++)if(i in self&&self[i]===sought)return i;return-1}),Array.prototype.lastIndexOf&&-1==[0,1].lastIndexOf(0,-3)||(Array.prototype.lastIndexOf=function(sought){var self=splitString&&\"[object String]\"==_toString(this)?this.split(\"\"):toObject(this),length=self.length>>>0;if(!length)return-1;var i=length-1;for(arguments.length>1&&(i=Math.min(i,toInteger(arguments[1]))),i=i>=0?i:length-Math.abs(i);i>=0;i--)if(i in self&&sought===self[i])return i;return-1}),Object.getPrototypeOf||(Object.getPrototypeOf=function(object){return object.__proto__||(object.constructor?object.constructor.prototype:prototypeOfObject)}),!Object.getOwnPropertyDescriptor){var ERR_NON_OBJECT=\"Object.getOwnPropertyDescriptor called on a non-object: \";Object.getOwnPropertyDescriptor=function(object,property){if(\"object\"!=typeof object&&\"function\"!=typeof object||null===object)throw new TypeError(ERR_NON_OBJECT+object);if(owns(object,property)){var descriptor,getter,setter;if(descriptor={enumerable:!0,configurable:!0},supportsAccessors){var prototype=object.__proto__;object.__proto__=prototypeOfObject;var getter=lookupGetter(object,property),setter=lookupSetter(object,property);if(object.__proto__=prototype,getter||setter)return getter&&(descriptor.get=getter),setter&&(descriptor.set=setter),descriptor}return descriptor.value=object[property],descriptor}}}if(Object.getOwnPropertyNames||(Object.getOwnPropertyNames=function(object){return Object.keys(object)}),!Object.create){var createEmpty;createEmpty=null===Object.prototype.__proto__?function(){return{__proto__:null}}:function(){var empty={};for(var i in empty)empty[i]=null;return empty.constructor=empty.hasOwnProperty=empty.propertyIsEnumerable=empty.isPrototypeOf=empty.toLocaleString=empty.toString=empty.valueOf=empty.__proto__=null,empty},Object.create=function(prototype,properties){var object;if(null===prototype)object=createEmpty();else{if(\"object\"!=typeof prototype)throw new TypeError(\"typeof prototype[\"+typeof prototype+\"] != 'object'\");var Type=function(){};Type.prototype=prototype,object=new Type,object.__proto__=prototype}return void 0!==properties&&Object.defineProperties(object,properties),object}}if(Object.defineProperty){var definePropertyWorksOnObject=doesDefinePropertyWork({}),definePropertyWorksOnDom=\"undefined\"==typeof document||doesDefinePropertyWork(document.createElement(\"div\"));if(!definePropertyWorksOnObject||!definePropertyWorksOnDom)var definePropertyFallback=Object.defineProperty}if(!Object.defineProperty||definePropertyFallback){var ERR_NON_OBJECT_DESCRIPTOR=\"Property description must be an object: \",ERR_NON_OBJECT_TARGET=\"Object.defineProperty called on non-object: \",ERR_ACCESSORS_NOT_SUPPORTED=\"getters & setters can not be defined on this javascript engine\";Object.defineProperty=function(object,property,descriptor){if(\"object\"!=typeof object&&\"function\"!=typeof object||null===object)throw new TypeError(ERR_NON_OBJECT_TARGET+object);if(\"object\"!=typeof descriptor&&\"function\"!=typeof descriptor||null===descriptor)throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR+descriptor);if(definePropertyFallback)try{return definePropertyFallback.call(Object,object,property,descriptor)}catch(exception){}if(owns(descriptor,\"value\"))if(supportsAccessors&&(lookupGetter(object,property)||lookupSetter(object,property))){var prototype=object.__proto__;object.__proto__=prototypeOfObject,delete object[property],object[property]=descriptor.value,object.__proto__=prototype}else object[property]=descriptor.value;else{if(!supportsAccessors)throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);owns(descriptor,\"get\")&&defineGetter(object,property,descriptor.get),owns(descriptor,\"set\")&&defineSetter(object,property,descriptor.set)}return object}}Object.defineProperties||(Object.defineProperties=function(object,properties){for(var property in properties)owns(properties,property)&&Object.defineProperty(object,property,properties[property]);return object}),Object.seal||(Object.seal=function(object){return object}),Object.freeze||(Object.freeze=function(object){return object});try{Object.freeze(function(){})}catch(exception){Object.freeze=function(freezeObject){return function(object){return\"function\"==typeof object?object:freezeObject(object)}}(Object.freeze)}if(Object.preventExtensions||(Object.preventExtensions=function(object){return object}),Object.isSealed||(Object.isSealed=function(){return!1}),Object.isFrozen||(Object.isFrozen=function(){return!1}),Object.isExtensible||(Object.isExtensible=function(object){if(Object(object)===object)throw new TypeError;for(var name=\"\";owns(object,name);)name+=\"?\";object[name]=!0;var returnValue=owns(object,name);return delete object[name],returnValue}),!Object.keys){var hasDontEnumBug=!0,dontEnums=[\"toString\",\"toLocaleString\",\"valueOf\",\"hasOwnProperty\",\"isPrototypeOf\",\"propertyIsEnumerable\",\"constructor\"],dontEnumsLength=dontEnums.length;for(var key in{toString:null})hasDontEnumBug=!1;Object.keys=function(object){if(\"object\"!=typeof object&&\"function\"!=typeof object||null===object)throw new TypeError(\"Object.keys called on a non-object\");var keys=[];for(var name in object)owns(object,name)&&keys.push(name);if(hasDontEnumBug)for(var i=0,ii=dontEnumsLength;ii>i;i++){var dontEnum=dontEnums[i];owns(object,dontEnum)&&keys.push(dontEnum)}return keys}}Date.now||(Date.now=function(){return(new Date).getTime()});var ws=\"\t\\n\u000b\\f\\r   ᠎             　\\u2028\\u2029\";if(!String.prototype.trim||ws.trim()){ws=\"[\"+ws+\"]\";var trimBeginRegexp=RegExp(\"^\"+ws+ws+\"*\"),trimEndRegexp=RegExp(ws+ws+\"*$\");String.prototype.trim=function(){return(this+\"\").replace(trimBeginRegexp,\"\").replace(trimEndRegexp,\"\")}}var toObject=function(o){if(null==o)throw new TypeError(\"can't convert \"+o+\" to object\");return Object(o)}});";

/***/ }),
/* 245 */,
/* 246 */,
/* 247 */,
/* 248 */,
/* 249 */
/*!***************************************************!*\
  !*** ./node_modules/prop-types/checkPropTypes.js ***!
  \***************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */



var printWarning = function() {};

if (true) {
  var ReactPropTypesSecret = __webpack_require__(/*! ./lib/ReactPropTypesSecret */ 647);
  var loggedTypeFailures = {};
  var has = Function.call.bind(Object.prototype.hasOwnProperty);

  printWarning = function(text) {
    var message = 'Warning: ' + text;
    if (typeof console !== 'undefined') {
      console.error(message);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      throw new Error(message);
    } catch (x) {}
  };
}

/**
 * Assert that the values match with the type specs.
 * Error messages are memorized and will only be shown once.
 *
 * @param {object} typeSpecs Map of name to a ReactPropType
 * @param {object} values Runtime values that need to be type-checked
 * @param {string} location e.g. "prop", "context", "child context"
 * @param {string} componentName Name of the component for error messages.
 * @param {?Function} getStack Returns the component stack.
 * @private
 */
function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
  if (true) {
    for (var typeSpecName in typeSpecs) {
      if (has(typeSpecs, typeSpecName)) {
        var error;
        // Prop type validation may throw. In case they do, we don't want to
        // fail the render phase where it didn't fail before. So we log it.
        // After these have been cleaned up, we'll let them throw.
        try {
          // This is intentionally an invariant that gets caught. It's the same
          // behavior as without this statement except with a better message.
          if (typeof typeSpecs[typeSpecName] !== 'function') {
            var err = Error(
              (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
              'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.'
            );
            err.name = 'Invariant Violation';
            throw err;
          }
          error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret);
        } catch (ex) {
          error = ex;
        }
        if (error && !(error instanceof Error)) {
          printWarning(
            (componentName || 'React class') + ': type specification of ' +
            location + ' `' + typeSpecName + '` is invalid; the type checker ' +
            'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
            'You may have forgotten to pass an argument to the type checker ' +
            'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
            'shape all require an argument).'
          );
        }
        if (error instanceof Error && !(error.message in loggedTypeFailures)) {
          // Only monitor this failure once because there tends to be a lot of the
          // same error.
          loggedTypeFailures[error.message] = true;

          var stack = getStack ? getStack() : '';

          printWarning(
            'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
          );
        }
      }
    }
  }
}

/**
 * Resets warning cache when testing.
 *
 * @private
 */
checkPropTypes.resetWarningCache = function() {
  if (true) {
    loggedTypeFailures = {};
  }
}

module.exports = checkPropTypes;


/***/ }),
/* 250 */
/*!*********************************************!*\
  !*** ./node_modules/object-assign/index.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/


/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

module.exports = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};


/***/ }),
/* 251 */,
/* 252 */,
/* 253 */,
/* 254 */,
/* 255 */,
/* 256 */,
/* 257 */,
/* 258 */,
/* 259 */,
/* 260 */,
/* 261 */,
/* 262 */,
/* 263 */,
/* 264 */
/*!**********************************************!*\
  !*** ./node_modules/file-saver/FileSaver.js ***!
  \**********************************************/
/*! no static exports found */
/*! exports used: saveAs */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_RESULT__;/* FileSaver.js
 * A saveAs() FileSaver implementation.
 * 1.3.2
 * 2016-06-16 18:25:19
 *
 * By Eli Grey, http://eligrey.com
 * License: MIT
 *   See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
 */

/*global self */
/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */

/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */

var saveAs = saveAs || (function(view) {
	"use strict";
	// IE <10 is explicitly unsupported
	if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
		return;
	}
	var
		  doc = view.document
		  // only get URL when necessary in case Blob.js hasn't overridden it yet
		, get_URL = function() {
			return view.URL || view.webkitURL || view;
		}
		, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
		, can_use_save_link = "download" in save_link
		, click = function(node) {
			var event = new MouseEvent("click");
			node.dispatchEvent(event);
		}
		, is_safari = /constructor/i.test(view.HTMLElement) || view.safari
		, is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
		, throw_outside = function(ex) {
			(view.setImmediate || view.setTimeout)(function() {
				throw ex;
			}, 0);
		}
		, force_saveable_type = "application/octet-stream"
		// the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
		, arbitrary_revoke_timeout = 1000 * 40 // in ms
		, revoke = function(file) {
			var revoker = function() {
				if (typeof file === "string") { // file is an object URL
					get_URL().revokeObjectURL(file);
				} else { // file is a File
					file.remove();
				}
			};
			setTimeout(revoker, arbitrary_revoke_timeout);
		}
		, dispatch = function(filesaver, event_types, event) {
			event_types = [].concat(event_types);
			var i = event_types.length;
			while (i--) {
				var listener = filesaver["on" + event_types[i]];
				if (typeof listener === "function") {
					try {
						listener.call(filesaver, event || filesaver);
					} catch (ex) {
						throw_outside(ex);
					}
				}
			}
		}
		, auto_bom = function(blob) {
			// prepend BOM for UTF-8 XML and text/* types (including HTML)
			// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
			if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
				return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
			}
			return blob;
		}
		, FileSaver = function(blob, name, no_auto_bom) {
			if (!no_auto_bom) {
				blob = auto_bom(blob);
			}
			// First try a.download, then web filesystem, then object URLs
			var
				  filesaver = this
				, type = blob.type
				, force = type === force_saveable_type
				, object_url
				, dispatch_all = function() {
					dispatch(filesaver, "writestart progress write writeend".split(" "));
				}
				// on any filesys errors revert to saving with object URLs
				, fs_error = function() {
					if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
						// Safari doesn't allow downloading of blob urls
						var reader = new FileReader();
						reader.onloadend = function() {
							var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
							var popup = view.open(url, '_blank');
							if(!popup) view.location.href = url;
							url=undefined; // release reference before dispatching
							filesaver.readyState = filesaver.DONE;
							dispatch_all();
						};
						reader.readAsDataURL(blob);
						filesaver.readyState = filesaver.INIT;
						return;
					}
					// don't create more object URLs than needed
					if (!object_url) {
						object_url = get_URL().createObjectURL(blob);
					}
					if (force) {
						view.location.href = object_url;
					} else {
						var opened = view.open(object_url, "_blank");
						if (!opened) {
							// Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
							view.location.href = object_url;
						}
					}
					filesaver.readyState = filesaver.DONE;
					dispatch_all();
					revoke(object_url);
				}
			;
			filesaver.readyState = filesaver.INIT;

			if (can_use_save_link) {
				object_url = get_URL().createObjectURL(blob);
				setTimeout(function() {
					save_link.href = object_url;
					save_link.download = name;
					click(save_link);
					dispatch_all();
					revoke(object_url);
					filesaver.readyState = filesaver.DONE;
				});
				return;
			}

			fs_error();
		}
		, FS_proto = FileSaver.prototype
		, saveAs = function(blob, name, no_auto_bom) {
			return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
		}
	;
	// IE 10+ (native saveAs)
	if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
		return function(blob, name, no_auto_bom) {
			name = name || blob.name || "download";

			if (!no_auto_bom) {
				blob = auto_bom(blob);
			}
			return navigator.msSaveOrOpenBlob(blob, name);
		};
	}

	FS_proto.abort = function(){};
	FS_proto.readyState = FS_proto.INIT = 0;
	FS_proto.WRITING = 1;
	FS_proto.DONE = 2;

	FS_proto.error =
	FS_proto.onwritestart =
	FS_proto.onprogress =
	FS_proto.onwrite =
	FS_proto.onabort =
	FS_proto.onerror =
	FS_proto.onwriteend =
		null;

	return saveAs;
}(
	   typeof self !== "undefined" && self
	|| typeof window !== "undefined" && window
	|| this.content
));
// `self` is undefined in Firefox for Android content script context
// while `this` is nsIContentFrameMessageManager
// with an attribute `content` that corresponds to the window

if (typeof module !== "undefined" && module.exports) {
  module.exports.saveAs = saveAs;
} else if (("function" !== "undefined" && __webpack_require__(/*! !webpack amd define */ 192) !== null) && (__webpack_require__(/*! !webpack amd options */ 386) !== null)) {
  !(__WEBPACK_AMD_DEFINE_RESULT__ = (function() {
    return saveAs;
  }).call(exports, __webpack_require__, exports, module),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
}


/***/ }),
/* 265 */
/*!*****************************************!*\
  !*** ./node_modules/jszip/lib/index.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


/**
 * Representation a of zip file in js
 * @constructor
 */
function JSZip() {
    // if this constructor is used without `new`, it adds `new` before itself:
    if(!(this instanceof JSZip)) {
        return new JSZip();
    }

    if(arguments.length) {
        throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");
    }

    // object containing the files :
    // {
    //   "folder/" : {...},
    //   "folder/data.txt" : {...}
    // }
    this.files = {};

    this.comment = null;

    // Where we are in the hierarchy
    this.root = "";
    this.clone = function() {
        var newObj = new JSZip();
        for (var i in this) {
            if (typeof this[i] !== "function") {
                newObj[i] = this[i];
            }
        }
        return newObj;
    };
}
JSZip.prototype = __webpack_require__(/*! ./object */ 438);
JSZip.prototype.loadAsync = __webpack_require__(/*! ./load */ 391);
JSZip.support = __webpack_require__(/*! ./support */ 113);
JSZip.defaults = __webpack_require__(/*! ./defaults */ 223);

// TODO find a better way to handle this version,
// a require('package.json').version doesn't work with webpack, see #327
JSZip.version = "3.1.5";

JSZip.loadAsync = function (content, options) {
    return new JSZip().loadAsync(content, options);
};

JSZip.external = __webpack_require__(/*! ./external */ 143);
module.exports = JSZip;


/***/ }),
/* 266 */
/*!************************************************!*\
  !*** ./node_modules/autosize/dist/autosize.js ***!
  \************************************************/
/*! no static exports found */
/*! exports used: default */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*!
	autosize 4.0.2
	license: MIT
	http://www.jacklmoore.com/autosize
*/
(function (global, factory) {
	if (true) {
		!(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
	} else { var mod; }
})(this, function (module, exports) {
	'use strict';

	var map = typeof Map === "function" ? new Map() : function () {
		var keys = [];
		var values = [];

		return {
			has: function has(key) {
				return keys.indexOf(key) > -1;
			},
			get: function get(key) {
				return values[keys.indexOf(key)];
			},
			set: function set(key, value) {
				if (keys.indexOf(key) === -1) {
					keys.push(key);
					values.push(value);
				}
			},
			delete: function _delete(key) {
				var index = keys.indexOf(key);
				if (index > -1) {
					keys.splice(index, 1);
					values.splice(index, 1);
				}
			}
		};
	}();

	var createEvent = function createEvent(name) {
		return new Event(name, { bubbles: true });
	};
	try {
		new Event('test');
	} catch (e) {
		// IE does not support `new Event()`
		createEvent = function createEvent(name) {
			var evt = document.createEvent('Event');
			evt.initEvent(name, true, false);
			return evt;
		};
	}

	function assign(ta) {
		if (!ta || !ta.nodeName || ta.nodeName !== 'TEXTAREA' || map.has(ta)) return;

		var heightOffset = null;
		var clientWidth = null;
		var cachedHeight = null;

		function init() {
			var style = window.getComputedStyle(ta, null);

			if (style.resize === 'vertical') {
				ta.style.resize = 'none';
			} else if (style.resize === 'both') {
				ta.style.resize = 'horizontal';
			}

			if (style.boxSizing === 'content-box') {
				heightOffset = -(parseFloat(style.paddingTop) + parseFloat(style.paddingBottom));
			} else {
				heightOffset = parseFloat(style.borderTopWidth) + parseFloat(style.borderBottomWidth);
			}
			// Fix when a textarea is not on document body and heightOffset is Not a Number
			if (isNaN(heightOffset)) {
				heightOffset = 0;
			}

			update();
		}

		function changeOverflow(value) {
			{
				// Chrome/Safari-specific fix:
				// When the textarea y-overflow is hidden, Chrome/Safari do not reflow the text to account for the space
				// made available by removing the scrollbar. The following forces the necessary text reflow.
				var width = ta.style.width;
				ta.style.width = '0px';
				// Force reflow:
				/* jshint ignore:start */
				ta.offsetWidth;
				/* jshint ignore:end */
				ta.style.width = width;
			}

			ta.style.overflowY = value;
		}

		function getParentOverflows(el) {
			var arr = [];

			while (el && el.parentNode && el.parentNode instanceof Element) {
				if (el.parentNode.scrollTop) {
					arr.push({
						node: el.parentNode,
						scrollTop: el.parentNode.scrollTop
					});
				}
				el = el.parentNode;
			}

			return arr;
		}

		function resize() {
			if (ta.scrollHeight === 0) {
				// If the scrollHeight is 0, then the element probably has display:none or is detached from the DOM.
				return;
			}

			var overflows = getParentOverflows(ta);
			var docTop = document.documentElement && document.documentElement.scrollTop; // Needed for Mobile IE (ticket #240)

			ta.style.height = '';
			ta.style.height = ta.scrollHeight + heightOffset + 'px';

			// used to check if an update is actually necessary on window.resize
			clientWidth = ta.clientWidth;

			// prevents scroll-position jumping
			overflows.forEach(function (el) {
				el.node.scrollTop = el.scrollTop;
			});

			if (docTop) {
				document.documentElement.scrollTop = docTop;
			}
		}

		function update() {
			resize();

			var styleHeight = Math.round(parseFloat(ta.style.height));
			var computed = window.getComputedStyle(ta, null);

			// Using offsetHeight as a replacement for computed.height in IE, because IE does not account use of border-box
			var actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(computed.height)) : ta.offsetHeight;

			// The actual height not matching the style height (set via the resize method) indicates that 
			// the max-height has been exceeded, in which case the overflow should be allowed.
			if (actualHeight < styleHeight) {
				if (computed.overflowY === 'hidden') {
					changeOverflow('scroll');
					resize();
					actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(window.getComputedStyle(ta, null).height)) : ta.offsetHeight;
				}
			} else {
				// Normally keep overflow set to hidden, to avoid flash of scrollbar as the textarea expands.
				if (computed.overflowY !== 'hidden') {
					changeOverflow('hidden');
					resize();
					actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(window.getComputedStyle(ta, null).height)) : ta.offsetHeight;
				}
			}

			if (cachedHeight !== actualHeight) {
				cachedHeight = actualHeight;
				var evt = createEvent('autosize:resized');
				try {
					ta.dispatchEvent(evt);
				} catch (err) {
					// Firefox will throw an error on dispatchEvent for a detached element
					// https://bugzilla.mozilla.org/show_bug.cgi?id=889376
				}
			}
		}

		var pageResize = function pageResize() {
			if (ta.clientWidth !== clientWidth) {
				update();
			}
		};

		var destroy = function (style) {
			window.removeEventListener('resize', pageResize, false);
			ta.removeEventListener('input', update, false);
			ta.removeEventListener('keyup', update, false);
			ta.removeEventListener('autosize:destroy', destroy, false);
			ta.removeEventListener('autosize:update', update, false);

			Object.keys(style).forEach(function (key) {
				ta.style[key] = style[key];
			});

			map.delete(ta);
		}.bind(ta, {
			height: ta.style.height,
			resize: ta.style.resize,
			overflowY: ta.style.overflowY,
			overflowX: ta.style.overflowX,
			wordWrap: ta.style.wordWrap
		});

		ta.addEventListener('autosize:destroy', destroy, false);

		// IE9 does not fire onpropertychange or oninput for deletions,
		// so binding to onkeyup to catch most of those events.
		// There is no way that I know of to detect something like 'cut' in IE9.
		if ('onpropertychange' in ta && 'oninput' in ta) {
			ta.addEventListener('keyup', update, false);
		}

		window.addEventListener('resize', pageResize, false);
		ta.addEventListener('input', update, false);
		ta.addEventListener('autosize:update', update, false);
		ta.style.overflowX = 'hidden';
		ta.style.wordWrap = 'break-word';

		map.set(ta, {
			destroy: destroy,
			update: update
		});

		init();
	}

	function destroy(ta) {
		var methods = map.get(ta);
		if (methods) {
			methods.destroy();
		}
	}

	function update(ta) {
		var methods = map.get(ta);
		if (methods) {
			methods.update();
		}
	}

	var autosize = null;

	// Do nothing in Node.js environment and IE8 (or lower)
	if (typeof window === 'undefined' || typeof window.getComputedStyle !== 'function') {
		autosize = function autosize(el) {
			return el;
		};
		autosize.destroy = function (el) {
			return el;
		};
		autosize.update = function (el) {
			return el;
		};
	} else {
		autosize = function autosize(el, options) {
			if (el) {
				Array.prototype.forEach.call(el.length ? el : [el], function (x) {
					return assign(x, options);
				});
			}
			return el;
		};
		autosize.destroy = function (el) {
			if (el) {
				Array.prototype.forEach.call(el.length ? el : [el], destroy);
			}
			return el;
		};
		autosize.update = function (el) {
			if (el) {
				Array.prototype.forEach.call(el.length ? el : [el], update);
			}
			return el;
		};
	}

	exports.default = autosize;
	module.exports = exports['default'];
});

/***/ }),
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/*!**************************************************!*\
  !*** ./node_modules/normalize.css/normalize.css ***!
  \**************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
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/*!*****************************************!*\
  !*** ./node_modules/acorn/dist/walk.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

(function (global, factory) {
	 true ? factory(exports) :
	undefined;
}(this, (function (exports) { 'use strict';

// AST walker module for Mozilla Parser API compatible trees

// A simple walk is one where you simply specify callbacks to be
// called on specific nodes. The last two arguments are optional. A
// simple use would be
//
//     walk.simple(myTree, {
//         Expression: function(node) { ... }
//     });
//
// to do something with all expressions. All Parser API node types
// can be used to identify node types, as well as Expression,
// Statement, and ScopeBody, which denote categories of nodes.
//
// The base argument can be used to pass a custom (recursive)
// walker, and state can be used to give this walked an initial
// state.

function simple(node, visitors, baseVisitor, state, override) {
  if (!baseVisitor) { baseVisitor = base
  ; }(function c(node, st, override) {
    var type = override || node.type, found = visitors[type];
    baseVisitor[type](node, st, c);
    if (found) { found(node, st); }
  })(node, state, override);
}

// An ancestor walk keeps an array of ancestor nodes (including the
// current node) and passes them to the callback as third parameter
// (and also as state parameter when no other state is present).
function ancestor(node, visitors, baseVisitor, state) {
  var ancestors = [];
  if (!baseVisitor) { baseVisitor = base
  ; }(function c(node, st, override) {
    var type = override || node.type, found = visitors[type];
    var isNew = node !== ancestors[ancestors.length - 1];
    if (isNew) { ancestors.push(node); }
    baseVisitor[type](node, st, c);
    if (found) { found(node, st || ancestors, ancestors); }
    if (isNew) { ancestors.pop(); }
  })(node, state);
}

// A recursive walk is one where your functions override the default
// walkers. They can modify and replace the state parameter that's
// threaded through the walk, and can opt how and whether to walk
// their child nodes (by calling their third argument on these
// nodes).
function recursive(node, state, funcs, baseVisitor, override) {
  var visitor = funcs ? make(funcs, baseVisitor || undefined) : baseVisitor;(function c(node, st, override) {
    visitor[override || node.type](node, st, c);
  })(node, state, override);
}

function makeTest(test) {
  if (typeof test === "string")
    { return function (type) { return type === test; } }
  else if (!test)
    { return function () { return true; } }
  else
    { return test }
}

var Found = function Found(node, state) { this.node = node; this.state = state; };

// A full walk triggers the callback on each node
function full(node, callback, baseVisitor, state, override) {
  if (!baseVisitor) { baseVisitor = base
  ; }(function c(node, st, override) {
    var type = override || node.type;
    baseVisitor[type](node, st, c);
    if (!override) { callback(node, st, type); }
  })(node, state, override);
}

// An fullAncestor walk is like an ancestor walk, but triggers
// the callback on each node
function fullAncestor(node, callback, baseVisitor, state) {
  if (!baseVisitor) { baseVisitor = base; }
  var ancestors = [];(function c(node, st, override) {
    var type = override || node.type;
    var isNew = node !== ancestors[ancestors.length - 1];
    if (isNew) { ancestors.push(node); }
    baseVisitor[type](node, st, c);
    if (!override) { callback(node, st || ancestors, ancestors, type); }
    if (isNew) { ancestors.pop(); }
  })(node, state);
}

// Find a node with a given start, end, and type (all are optional,
// null can be used as wildcard). Returns a {node, state} object, or
// undefined when it doesn't find a matching node.
function findNodeAt(node, start, end, test, baseVisitor, state) {
  if (!baseVisitor) { baseVisitor = base; }
  test = makeTest(test);
  try {
    (function c(node, st, override) {
      var type = override || node.type;
      if ((start == null || node.start <= start) &&
          (end == null || node.end >= end))
        { baseVisitor[type](node, st, c); }
      if ((start == null || node.start === start) &&
          (end == null || node.end === end) &&
          test(type, node))
        { throw new Found(node, st) }
    })(node, state);
  } catch (e) {
    if (e instanceof Found) { return e }
    throw e
  }
}

// Find the innermost node of a given type that contains the given
// position. Interface similar to findNodeAt.
function findNodeAround(node, pos, test, baseVisitor, state) {
  test = makeTest(test);
  if (!baseVisitor) { baseVisitor = base; }
  try {
    (function c(node, st, override) {
      var type = override || node.type;
      if (node.start > pos || node.end < pos) { return }
      baseVisitor[type](node, st, c);
      if (test(type, node)) { throw new Found(node, st) }
    })(node, state);
  } catch (e) {
    if (e instanceof Found) { return e }
    throw e
  }
}

// Find the outermost matching node after a given position.
function findNodeAfter(node, pos, test, baseVisitor, state) {
  test = makeTest(test);
  if (!baseVisitor) { baseVisitor = base; }
  try {
    (function c(node, st, override) {
      if (node.end < pos) { return }
      var type = override || node.type;
      if (node.start >= pos && test(type, node)) { throw new Found(node, st) }
      baseVisitor[type](node, st, c);
    })(node, state);
  } catch (e) {
    if (e instanceof Found) { return e }
    throw e
  }
}

// Find the outermost matching node before a given position.
function findNodeBefore(node, pos, test, baseVisitor, state) {
  test = makeTest(test);
  if (!baseVisitor) { baseVisitor = base; }
  var max;(function c(node, st, override) {
    if (node.start > pos) { return }
    var type = override || node.type;
    if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
      { max = new Found(node, st); }
    baseVisitor[type](node, st, c);
  })(node, state);
  return max
}

// Fallback to an Object.create polyfill for older environments.
var create = Object.create || function(proto) {
  function Ctor() {}
  Ctor.prototype = proto;
  return new Ctor
};

// Used to create a custom walker. Will fill in all missing node
// type properties with the defaults.
function make(funcs, baseVisitor) {
  var visitor = create(baseVisitor || base);
  for (var type in funcs) { visitor[type] = funcs[type]; }
  return visitor
}

function skipThrough(node, st, c) { c(node, st); }
function ignore(_node, _st, _c) {}

// Node walkers.

var base = {};

base.Program = base.BlockStatement = function (node, st, c) {
  for (var i = 0, list = node.body; i < list.length; i += 1)
    {
    var stmt = list[i];

    c(stmt, st, "Statement");
  }
};
base.Statement = skipThrough;
base.EmptyStatement = ignore;
base.ExpressionStatement = base.ParenthesizedExpression =
  function (node, st, c) { return c(node.expression, st, "Expression"); };
base.IfStatement = function (node, st, c) {
  c(node.test, st, "Expression");
  c(node.consequent, st, "Statement");
  if (node.alternate) { c(node.alternate, st, "Statement"); }
};
base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); };
base.BreakStatement = base.ContinueStatement = ignore;
base.WithStatement = function (node, st, c) {
  c(node.object, st, "Expression");
  c(node.body, st, "Statement");
};
base.SwitchStatement = function (node, st, c) {
  c(node.discriminant, st, "Expression");
  for (var i = 0, list = node.cases; i < list.length; i += 1) {
    var cs = list[i];

    if (cs.test) { c(cs.test, st, "Expression"); }
    for (var i$1 = 0, list$1 = cs.consequent; i$1 < list$1.length; i$1 += 1)
      {
      var cons = list$1[i$1];

      c(cons, st, "Statement");
    }
  }
};
base.SwitchCase = function (node, st, c) {
  if (node.test) { c(node.test, st, "Expression"); }
  for (var i = 0, list = node.consequent; i < list.length; i += 1)
    {
    var cons = list[i];

    c(cons, st, "Statement");
  }
};
base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
  if (node.argument) { c(node.argument, st, "Expression"); }
};
base.ThrowStatement = base.SpreadElement =
  function (node, st, c) { return c(node.argument, st, "Expression"); };
base.TryStatement = function (node, st, c) {
  c(node.block, st, "Statement");
  if (node.handler) { c(node.handler, st); }
  if (node.finalizer) { c(node.finalizer, st, "Statement"); }
};
base.CatchClause = function (node, st, c) {
  if (node.param) { c(node.param, st, "Pattern"); }
  c(node.body, st, "ScopeBody");
};
base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
  c(node.test, st, "Expression");
  c(node.body, st, "Statement");
};
base.ForStatement = function (node, st, c) {
  if (node.init) { c(node.init, st, "ForInit"); }
  if (node.test) { c(node.test, st, "Expression"); }
  if (node.update) { c(node.update, st, "Expression"); }
  c(node.body, st, "Statement");
};
base.ForInStatement = base.ForOfStatement = function (node, st, c) {
  c(node.left, st, "ForInit");
  c(node.right, st, "Expression");
  c(node.body, st, "Statement");
};
base.ForInit = function (node, st, c) {
  if (node.type === "VariableDeclaration") { c(node, st); }
  else { c(node, st, "Expression"); }
};
base.DebuggerStatement = ignore;

base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); };
base.VariableDeclaration = function (node, st, c) {
  for (var i = 0, list = node.declarations; i < list.length; i += 1)
    {
    var decl = list[i];

    c(decl, st);
  }
};
base.VariableDeclarator = function (node, st, c) {
  c(node.id, st, "Pattern");
  if (node.init) { c(node.init, st, "Expression"); }
};

base.Function = function (node, st, c) {
  if (node.id) { c(node.id, st, "Pattern"); }
  for (var i = 0, list = node.params; i < list.length; i += 1)
    {
    var param = list[i];

    c(param, st, "Pattern");
  }
  c(node.body, st, node.expression ? "ScopeExpression" : "ScopeBody");
};
// FIXME drop these node types in next major version
// (They are awkward, and in ES6 every block can be a scope.)
base.ScopeBody = function (node, st, c) { return c(node, st, "Statement"); };
base.ScopeExpression = function (node, st, c) { return c(node, st, "Expression"); };

base.Pattern = function (node, st, c) {
  if (node.type === "Identifier")
    { c(node, st, "VariablePattern"); }
  else if (node.type === "MemberExpression")
    { c(node, st, "MemberPattern"); }
  else
    { c(node, st); }
};
base.VariablePattern = ignore;
base.MemberPattern = skipThrough;
base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); };
base.ArrayPattern = function (node, st, c) {
  for (var i = 0, list = node.elements; i < list.length; i += 1) {
    var elt = list[i];

    if (elt) { c(elt, st, "Pattern"); }
  }
};
base.ObjectPattern = function (node, st, c) {
  for (var i = 0, list = node.properties; i < list.length; i += 1) {
    var prop = list[i];

    if (prop.type === "Property") {
      if (prop.computed) { c(prop.key, st, "Expression"); }
      c(prop.value, st, "Pattern");
    } else if (prop.type === "RestElement") {
      c(prop.argument, st, "Pattern");
    }
  }
};

base.Expression = skipThrough;
base.ThisExpression = base.Super = base.MetaProperty = ignore;
base.ArrayExpression = function (node, st, c) {
  for (var i = 0, list = node.elements; i < list.length; i += 1) {
    var elt = list[i];

    if (elt) { c(elt, st, "Expression"); }
  }
};
base.ObjectExpression = function (node, st, c) {
  for (var i = 0, list = node.properties; i < list.length; i += 1)
    {
    var prop = list[i];

    c(prop, st);
  }
};
base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
base.SequenceExpression = base.TemplateLiteral = function (node, st, c) {
  for (var i = 0, list = node.expressions; i < list.length; i += 1)
    {
    var expr = list[i];

    c(expr, st, "Expression");
  }
};
base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
  c(node.argument, st, "Expression");
};
base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
  c(node.left, st, "Expression");
  c(node.right, st, "Expression");
};
base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
  c(node.left, st, "Pattern");
  c(node.right, st, "Expression");
};
base.ConditionalExpression = function (node, st, c) {
  c(node.test, st, "Expression");
  c(node.consequent, st, "Expression");
  c(node.alternate, st, "Expression");
};
base.NewExpression = base.CallExpression = function (node, st, c) {
  c(node.callee, st, "Expression");
  if (node.arguments)
    { for (var i = 0, list = node.arguments; i < list.length; i += 1)
      {
        var arg = list[i];

        c(arg, st, "Expression");
      } }
};
base.MemberExpression = function (node, st, c) {
  c(node.object, st, "Expression");
  if (node.computed) { c(node.property, st, "Expression"); }
};
base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
  if (node.declaration)
    { c(node.declaration, st, node.type === "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); }
  if (node.source) { c(node.source, st, "Expression"); }
};
base.ExportAllDeclaration = function (node, st, c) {
  c(node.source, st, "Expression");
};
base.ImportDeclaration = function (node, st, c) {
  for (var i = 0, list = node.specifiers; i < list.length; i += 1)
    {
    var spec = list[i];

    c(spec, st);
  }
  c(node.source, st, "Expression");
};
base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore;

base.TaggedTemplateExpression = function (node, st, c) {
  c(node.tag, st, "Expression");
  c(node.quasi, st, "Expression");
};
base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); };
base.Class = function (node, st, c) {
  if (node.id) { c(node.id, st, "Pattern"); }
  if (node.superClass) { c(node.superClass, st, "Expression"); }
  c(node.body, st);
};
base.ClassBody = function (node, st, c) {
  for (var i = 0, list = node.body; i < list.length; i += 1)
    {
    var elt = list[i];

    c(elt, st);
  }
};
base.MethodDefinition = base.Property = function (node, st, c) {
  if (node.computed) { c(node.key, st, "Expression"); }
  c(node.value, st, "Expression");
};

exports.simple = simple;
exports.ancestor = ancestor;
exports.recursive = recursive;
exports.full = full;
exports.fullAncestor = fullAncestor;
exports.findNodeAt = findNodeAt;
exports.findNodeAround = findNodeAround;
exports.findNodeAfter = findNodeAfter;
exports.findNodeBefore = findNodeBefore;
exports.make = make;
exports.base = base;

Object.defineProperty(exports, '__esModule', { value: true });

})));


/***/ }),
/* 370 */
/*!*********************************************!*\
  !*** ./node_modules/escodegen/package.json ***!
  \*********************************************/
/*! exports provided: _args, _from, _id, _inBundle, _integrity, _location, _phantomChildren, _requested, _requiredBy, _resolved, _spec, _where, bin, bugs, dependencies, description, devDependencies, engines, files, homepage, license, main, maintainers, name, optionalDependencies, repository, scripts, version, default */
/*! all exports used */
/***/ (function(module) {

module.exports = {"_args":[["escodegen@1.11.0","C:\\Users\\danie\\Desktop\\bitburner"]],"_from":"escodegen@1.11.0","_id":"escodegen@1.11.0","_inBundle":false,"_integrity":"sha512-IeMV45ReixHS53K/OmfKAIztN/igDHzTJUhZM3k1jMhIZWjk45SMwAtBsEXiJp3vSPmTcu6CXn7mDvFHRN66fw==","_location":"/escodegen","_phantomChildren":{},"_requested":{"type":"version","registry":true,"raw":"escodegen@1.11.0","name":"escodegen","escapedName":"escodegen","rawSpec":"1.11.0","saveSpec":null,"fetchSpec":"1.11.0"},"_requiredBy":["/"],"_resolved":"https://registry.npmjs.org/escodegen/-/escodegen-1.11.0.tgz","_spec":"1.11.0","_where":"C:\\Users\\danie\\Desktop\\bitburner","bin":{"esgenerate":"./bin/esgenerate.js","escodegen":"./bin/escodegen.js"},"bugs":{"url":"https://github.com/estools/escodegen/issues"},"dependencies":{"esprima":"^3.1.3","estraverse":"^4.2.0","esutils":"^2.0.2","optionator":"^0.8.1","source-map":"~0.6.1"},"description":"ECMAScript code generator","devDependencies":{"acorn":"^4.0.4","bluebird":"^3.4.7","bower-registry-client":"^1.0.0","chai":"^3.5.0","commonjs-everywhere":"^0.9.7","gulp":"^3.8.10","gulp-eslint":"^3.0.1","gulp-mocha":"^3.0.1","semver":"^5.1.0"},"engines":{"node":">=4.0"},"files":["LICENSE.BSD","README.md","bin","escodegen.js","package.json"],"homepage":"http://github.com/estools/escodegen","license":"BSD-2-Clause","main":"escodegen.js","maintainers":[{"name":"Yusuke Suzuki","email":"utatane.tea@gmail.com","url":"http://github.com/Constellation"}],"name":"escodegen","optionalDependencies":{"source-map":"~0.6.1"},"repository":{"type":"git","url":"git+ssh://git@github.com/estools/escodegen.git"},"scripts":{"build":"cjsify -a path: tools/entry-point.js > escodegen.browser.js","build-min":"cjsify -ma path: tools/entry-point.js > escodegen.browser.min.js","lint":"gulp lint","release":"node tools/release.js","test":"gulp travis","unit-test":"gulp test"},"version":"1.11.0"};

/***/ }),
/* 371 */
/*!***************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/source-node.js ***!
  \***************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var SourceMapGenerator = __webpack_require__(/*! ./source-map-generator */ 207).SourceMapGenerator;
var util = __webpack_require__(/*! ./util */ 142);

// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
// operating systems these days (capturing the result).
var REGEX_NEWLINE = /(\r?\n)/;

// Newline character code for charCodeAt() comparisons
var NEWLINE_CODE = 10;

// Private symbol for identifying `SourceNode`s when multiple versions of
// the source-map library are loaded. This MUST NOT CHANGE across
// versions!
var isSourceNode = "$$$isSourceNode$$$";

/**
 * SourceNodes provide a way to abstract over interpolating/concatenating
 * snippets of generated JavaScript source code while maintaining the line and
 * column information associated with the original source code.
 *
 * @param aLine The original line number.
 * @param aColumn The original column number.
 * @param aSource The original source's filename.
 * @param aChunks Optional. An array of strings which are snippets of
 *        generated JS, or other SourceNodes.
 * @param aName The original identifier.
 */
function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
  this.children = [];
  this.sourceContents = {};
  this.line = aLine == null ? null : aLine;
  this.column = aColumn == null ? null : aColumn;
  this.source = aSource == null ? null : aSource;
  this.name = aName == null ? null : aName;
  this[isSourceNode] = true;
  if (aChunks != null) this.add(aChunks);
}

/**
 * Creates a SourceNode from generated code and a SourceMapConsumer.
 *
 * @param aGeneratedCode The generated code
 * @param aSourceMapConsumer The SourceMap for the generated code
 * @param aRelativePath Optional. The path that relative sources in the
 *        SourceMapConsumer should be relative to.
 */
SourceNode.fromStringWithSourceMap =
  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
    // The SourceNode we want to fill with the generated code
    // and the SourceMap
    var node = new SourceNode();

    // All even indices of this array are one line of the generated code,
    // while all odd indices are the newlines between two adjacent lines
    // (since `REGEX_NEWLINE` captures its match).
    // Processed fragments are accessed by calling `shiftNextLine`.
    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
    var remainingLinesIndex = 0;
    var shiftNextLine = function() {
      var lineContents = getNextLine();
      // The last line of a file might not have a newline.
      var newLine = getNextLine() || "";
      return lineContents + newLine;

      function getNextLine() {
        return remainingLinesIndex < remainingLines.length ?
            remainingLines[remainingLinesIndex++] : undefined;
      }
    };

    // We need to remember the position of "remainingLines"
    var lastGeneratedLine = 1, lastGeneratedColumn = 0;

    // The generate SourceNodes we need a code range.
    // To extract it current and last mapping is used.
    // Here we store the last mapping.
    var lastMapping = null;

    aSourceMapConsumer.eachMapping(function (mapping) {
      if (lastMapping !== null) {
        // We add the code from "lastMapping" to "mapping":
        // First check if there is a new line in between.
        if (lastGeneratedLine < mapping.generatedLine) {
          // Associate first line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
          lastGeneratedLine++;
          lastGeneratedColumn = 0;
          // The remaining code is added without mapping
        } else {
          // There is no new line in between.
          // Associate the code between "lastGeneratedColumn" and
          // "mapping.generatedColumn" with "lastMapping"
          var nextLine = remainingLines[remainingLinesIndex] || '';
          var code = nextLine.substr(0, mapping.generatedColumn -
                                        lastGeneratedColumn);
          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
                                              lastGeneratedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
          addMappingWithCode(lastMapping, code);
          // No more remaining code, continue
          lastMapping = mapping;
          return;
        }
      }
      // We add the generated code until the first mapping
      // to the SourceNode without any mapping.
      // Each line is added as separate string.
      while (lastGeneratedLine < mapping.generatedLine) {
        node.add(shiftNextLine());
        lastGeneratedLine++;
      }
      if (lastGeneratedColumn < mapping.generatedColumn) {
        var nextLine = remainingLines[remainingLinesIndex] || '';
        node.add(nextLine.substr(0, mapping.generatedColumn));
        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
        lastGeneratedColumn = mapping.generatedColumn;
      }
      lastMapping = mapping;
    }, this);
    // We have processed all mappings.
    if (remainingLinesIndex < remainingLines.length) {
      if (lastMapping) {
        // Associate the remaining code in the current line with "lastMapping"
        addMappingWithCode(lastMapping, shiftNextLine());
      }
      // and add the remaining lines without any mapping
      node.add(remainingLines.splice(remainingLinesIndex).join(""));
    }

    // Copy sourcesContent into SourceNode
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aRelativePath != null) {
          sourceFile = util.join(aRelativePath, sourceFile);
        }
        node.setSourceContent(sourceFile, content);
      }
    });

    return node;

    function addMappingWithCode(mapping, code) {
      if (mapping === null || mapping.source === undefined) {
        node.add(code);
      } else {
        var source = aRelativePath
          ? util.join(aRelativePath, mapping.source)
          : mapping.source;
        node.add(new SourceNode(mapping.originalLine,
                                mapping.originalColumn,
                                source,
                                code,
                                mapping.name));
      }
    }
  };

/**
 * Add a chunk of generated JS to this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.add = function SourceNode_add(aChunk) {
  if (Array.isArray(aChunk)) {
    aChunk.forEach(function (chunk) {
      this.add(chunk);
    }, this);
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    if (aChunk) {
      this.children.push(aChunk);
    }
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Add a chunk of generated JS to the beginning of this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
  if (Array.isArray(aChunk)) {
    for (var i = aChunk.length-1; i >= 0; i--) {
      this.prepend(aChunk[i]);
    }
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    this.children.unshift(aChunk);
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Walk over the tree of JS snippets in this node and its children. The
 * walking function is called once for each snippet of JS and is passed that
 * snippet and the its original associated source's line/column location.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walk = function SourceNode_walk(aFn) {
  var chunk;
  for (var i = 0, len = this.children.length; i < len; i++) {
    chunk = this.children[i];
    if (chunk[isSourceNode]) {
      chunk.walk(aFn);
    }
    else {
      if (chunk !== '') {
        aFn(chunk, { source: this.source,
                     line: this.line,
                     column: this.column,
                     name: this.name });
      }
    }
  }
};

/**
 * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
 * each of `this.children`.
 *
 * @param aSep The separator.
 */
SourceNode.prototype.join = function SourceNode_join(aSep) {
  var newChildren;
  var i;
  var len = this.children.length;
  if (len > 0) {
    newChildren = [];
    for (i = 0; i < len-1; i++) {
      newChildren.push(this.children[i]);
      newChildren.push(aSep);
    }
    newChildren.push(this.children[i]);
    this.children = newChildren;
  }
  return this;
};

/**
 * Call String.prototype.replace on the very right-most source snippet. Useful
 * for trimming whitespace from the end of a source node, etc.
 *
 * @param aPattern The pattern to replace.
 * @param aReplacement The thing to replace the pattern with.
 */
SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
  var lastChild = this.children[this.children.length - 1];
  if (lastChild[isSourceNode]) {
    lastChild.replaceRight(aPattern, aReplacement);
  }
  else if (typeof lastChild === 'string') {
    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
  }
  else {
    this.children.push(''.replace(aPattern, aReplacement));
  }
  return this;
};

/**
 * Set the source content for a source file. This will be added to the SourceMapGenerator
 * in the sourcesContent field.
 *
 * @param aSourceFile The filename of the source file
 * @param aSourceContent The content of the source file
 */
SourceNode.prototype.setSourceContent =
  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
  };

/**
 * Walk over the tree of SourceNodes. The walking function is called for each
 * source file content and is passed the filename and source content.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walkSourceContents =
  function SourceNode_walkSourceContents(aFn) {
    for (var i = 0, len = this.children.length; i < len; i++) {
      if (this.children[i][isSourceNode]) {
        this.children[i].walkSourceContents(aFn);
      }
    }

    var sources = Object.keys(this.sourceContents);
    for (var i = 0, len = sources.length; i < len; i++) {
      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
    }
  };

/**
 * Return the string representation of this source node. Walks over the tree
 * and concatenates all the various snippets together to one string.
 */
SourceNode.prototype.toString = function SourceNode_toString() {
  var str = "";
  this.walk(function (chunk) {
    str += chunk;
  });
  return str;
};

/**
 * Returns the string representation of this source node along with a source
 * map.
 */
SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
  var generated = {
    code: "",
    line: 1,
    column: 0
  };
  var map = new SourceMapGenerator(aArgs);
  var sourceMappingActive = false;
  var lastOriginalSource = null;
  var lastOriginalLine = null;
  var lastOriginalColumn = null;
  var lastOriginalName = null;
  this.walk(function (chunk, original) {
    generated.code += chunk;
    if (original.source !== null
        && original.line !== null
        && original.column !== null) {
      if(lastOriginalSource !== original.source
         || lastOriginalLine !== original.line
         || lastOriginalColumn !== original.column
         || lastOriginalName !== original.name) {
        map.addMapping({
          source: original.source,
          original: {
            line: original.line,
            column: original.column
          },
          generated: {
            line: generated.line,
            column: generated.column
          },
          name: original.name
        });
      }
      lastOriginalSource = original.source;
      lastOriginalLine = original.line;
      lastOriginalColumn = original.column;
      lastOriginalName = original.name;
      sourceMappingActive = true;
    } else if (sourceMappingActive) {
      map.addMapping({
        generated: {
          line: generated.line,
          column: generated.column
        }
      });
      lastOriginalSource = null;
      sourceMappingActive = false;
    }
    for (var idx = 0, length = chunk.length; idx < length; idx++) {
      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
        generated.line++;
        generated.column = 0;
        // Mappings end at eol
        if (idx + 1 === length) {
          lastOriginalSource = null;
          sourceMappingActive = false;
        } else if (sourceMappingActive) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
      } else {
        generated.column++;
      }
    }
  });
  this.walkSourceContents(function (sourceFile, sourceContent) {
    map.setSourceContent(sourceFile, sourceContent);
  });

  return { code: generated.code, map: map };
};

exports.SourceNode = SourceNode;


/***/ }),
/* 372 */
/*!**************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/quick-sort.js ***!
  \**************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

// It turns out that some (most?) JavaScript engines don't self-host
// `Array.prototype.sort`. This makes sense because C++ will likely remain
// faster than JS when doing raw CPU-intensive sorting. However, when using a
// custom comparator function, calling back and forth between the VM's C++ and
// JIT'd JS is rather slow *and* loses JIT type information, resulting in
// worse generated code for the comparator function than would be optimal. In
// fact, when sorting with a comparator, these costs outweigh the benefits of
// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
// a ~3500ms mean speed-up in `bench/bench.html`.

/**
 * Swap the elements indexed by `x` and `y` in the array `ary`.
 *
 * @param {Array} ary
 *        The array.
 * @param {Number} x
 *        The index of the first item.
 * @param {Number} y
 *        The index of the second item.
 */
function swap(ary, x, y) {
  var temp = ary[x];
  ary[x] = ary[y];
  ary[y] = temp;
}

/**
 * Returns a random integer within the range `low .. high` inclusive.
 *
 * @param {Number} low
 *        The lower bound on the range.
 * @param {Number} high
 *        The upper bound on the range.
 */
function randomIntInRange(low, high) {
  return Math.round(low + (Math.random() * (high - low)));
}

/**
 * The Quick Sort algorithm.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 * @param {Number} p
 *        Start index of the array
 * @param {Number} r
 *        End index of the array
 */
function doQuickSort(ary, comparator, p, r) {
  // If our lower bound is less than our upper bound, we (1) partition the
  // array into two pieces and (2) recurse on each half. If it is not, this is
  // the empty array and our base case.

  if (p < r) {
    // (1) Partitioning.
    //
    // The partitioning chooses a pivot between `p` and `r` and moves all
    // elements that are less than or equal to the pivot to the before it, and
    // all the elements that are greater than it after it. The effect is that
    // once partition is done, the pivot is in the exact place it will be when
    // the array is put in sorted order, and it will not need to be moved
    // again. This runs in O(n) time.

    // Always choose a random pivot so that an input array which is reverse
    // sorted does not cause O(n^2) running time.
    var pivotIndex = randomIntInRange(p, r);
    var i = p - 1;

    swap(ary, pivotIndex, r);
    var pivot = ary[r];

    // Immediately after `j` is incremented in this loop, the following hold
    // true:
    //
    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
    //
    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
    for (var j = p; j < r; j++) {
      if (comparator(ary[j], pivot) <= 0) {
        i += 1;
        swap(ary, i, j);
      }
    }

    swap(ary, i + 1, j);
    var q = i + 1;

    // (2) Recurse on each half.

    doQuickSort(ary, comparator, p, q - 1);
    doQuickSort(ary, comparator, q + 1, r);
  }
}

/**
 * Sort the given array in-place with the given comparator function.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 */
exports.quickSort = function (ary, comparator) {
  doQuickSort(ary, comparator, 0, ary.length - 1);
};


/***/ }),
/* 373 */
/*!*****************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/binary-search.js ***!
  \*****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

exports.GREATEST_LOWER_BOUND = 1;
exports.LEAST_UPPER_BOUND = 2;

/**
 * Recursive implementation of binary search.
 *
 * @param aLow Indices here and lower do not contain the needle.
 * @param aHigh Indices here and higher do not contain the needle.
 * @param aNeedle The element being searched for.
 * @param aHaystack The non-empty array being searched.
 * @param aCompare Function which takes two elements and returns -1, 0, or 1.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 */
function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
  // This function terminates when one of the following is true:
  //
  //   1. We find the exact element we are looking for.
  //
  //   2. We did not find the exact element, but we can return the index of
  //      the next-closest element.
  //
  //   3. We did not find the exact element, and there is no next-closest
  //      element than the one we are searching for, so we return -1.
  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
  var cmp = aCompare(aNeedle, aHaystack[mid], true);
  if (cmp === 0) {
    // Found the element we are looking for.
    return mid;
  }
  else if (cmp > 0) {
    // Our needle is greater than aHaystack[mid].
    if (aHigh - mid > 1) {
      // The element is in the upper half.
      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
    }

    // The exact needle element was not found in this haystack. Determine if
    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return aHigh < aHaystack.length ? aHigh : -1;
    } else {
      return mid;
    }
  }
  else {
    // Our needle is less than aHaystack[mid].
    if (mid - aLow > 1) {
      // The element is in the lower half.
      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
    }

    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return mid;
    } else {
      return aLow < 0 ? -1 : aLow;
    }
  }
}

/**
 * This is an implementation of binary search which will always try and return
 * the index of the closest element if there is no exact hit. This is because
 * mappings between original and generated line/col pairs are single points,
 * and there is an implicit region between each of them, so a miss just means
 * that you aren't on the very start of a region.
 *
 * @param aNeedle The element you are looking for.
 * @param aHaystack The array that is being searched.
 * @param aCompare A function which takes the needle and an element in the
 *     array and returns -1, 0, or 1 depending on whether the needle is less
 *     than, equal to, or greater than the element, respectively.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
 */
exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
  if (aHaystack.length === 0) {
    return -1;
  }

  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
  if (index < 0) {
    return -1;
  }

  // We have found either the exact element, or the next-closest element than
  // the one we are searching for. However, there may be more than one such
  // element. Make sure we always return the smallest of these.
  while (index - 1 >= 0) {
    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
      break;
    }
    --index;
  }

  return index;
};


/***/ }),
/* 374 */
/*!***********************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/source-map-consumer.js ***!
  \***********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = __webpack_require__(/*! ./util */ 142);
var binarySearch = __webpack_require__(/*! ./binary-search */ 373);
var ArraySet = __webpack_require__(/*! ./array-set */ 205).ArraySet;
var base64VLQ = __webpack_require__(/*! ./base64-vlq */ 206);
var quickSort = __webpack_require__(/*! ./quick-sort */ 372).quickSort;

function SourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  return sourceMap.sections != null
    ? new IndexedSourceMapConsumer(sourceMap, aSourceMapURL)
    : new BasicSourceMapConsumer(sourceMap, aSourceMapURL);
}

SourceMapConsumer.fromSourceMap = function(aSourceMap, aSourceMapURL) {
  return BasicSourceMapConsumer.fromSourceMap(aSourceMap, aSourceMapURL);
}

/**
 * The version of the source mapping spec that we are consuming.
 */
SourceMapConsumer.prototype._version = 3;

// `__generatedMappings` and `__originalMappings` are arrays that hold the
// parsed mapping coordinates from the source map's "mappings" attribute. They
// are lazily instantiated, accessed via the `_generatedMappings` and
// `_originalMappings` getters respectively, and we only parse the mappings
// and create these arrays once queried for a source location. We jump through
// these hoops because there can be many thousands of mappings, and parsing
// them is expensive, so we only want to do it if we must.
//
// Each object in the arrays is of the form:
//
//     {
//       generatedLine: The line number in the generated code,
//       generatedColumn: The column number in the generated code,
//       source: The path to the original source file that generated this
//               chunk of code,
//       originalLine: The line number in the original source that
//                     corresponds to this chunk of generated code,
//       originalColumn: The column number in the original source that
//                       corresponds to this chunk of generated code,
//       name: The name of the original symbol which generated this chunk of
//             code.
//     }
//
// All properties except for `generatedLine` and `generatedColumn` can be
// `null`.
//
// `_generatedMappings` is ordered by the generated positions.
//
// `_originalMappings` is ordered by the original positions.

SourceMapConsumer.prototype.__generatedMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__generatedMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__generatedMappings;
  }
});

SourceMapConsumer.prototype.__originalMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__originalMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__originalMappings;
  }
});

SourceMapConsumer.prototype._charIsMappingSeparator =
  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
    var c = aStr.charAt(index);
    return c === ";" || c === ",";
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
SourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    throw new Error("Subclasses must implement _parseMappings");
  };

SourceMapConsumer.GENERATED_ORDER = 1;
SourceMapConsumer.ORIGINAL_ORDER = 2;

SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
SourceMapConsumer.LEAST_UPPER_BOUND = 2;

/**
 * Iterate over each mapping between an original source/line/column and a
 * generated line/column in this source map.
 *
 * @param Function aCallback
 *        The function that is called with each mapping.
 * @param Object aContext
 *        Optional. If specified, this object will be the value of `this` every
 *        time that `aCallback` is called.
 * @param aOrder
 *        Either `SourceMapConsumer.GENERATED_ORDER` or
 *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
 *        iterate over the mappings sorted by the generated file's line/column
 *        order or the original's source/line/column order, respectively. Defaults to
 *        `SourceMapConsumer.GENERATED_ORDER`.
 */
SourceMapConsumer.prototype.eachMapping =
  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
    var context = aContext || null;
    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

    var mappings;
    switch (order) {
    case SourceMapConsumer.GENERATED_ORDER:
      mappings = this._generatedMappings;
      break;
    case SourceMapConsumer.ORIGINAL_ORDER:
      mappings = this._originalMappings;
      break;
    default:
      throw new Error("Unknown order of iteration.");
    }

    var sourceRoot = this.sourceRoot;
    mappings.map(function (mapping) {
      var source = mapping.source === null ? null : this._sources.at(mapping.source);
      source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL);
      return {
        source: source,
        generatedLine: mapping.generatedLine,
        generatedColumn: mapping.generatedColumn,
        originalLine: mapping.originalLine,
        originalColumn: mapping.originalColumn,
        name: mapping.name === null ? null : this._names.at(mapping.name)
      };
    }, this).forEach(aCallback, context);
  };

/**
 * Returns all generated line and column information for the original source,
 * line, and column provided. If no column is provided, returns all mappings
 * corresponding to a either the line we are searching for or the next
 * closest line that has any mappings. Otherwise, returns all mappings
 * corresponding to the given line and either the column we are searching for
 * or the next closest column that has any offsets.
 *
 * The only argument is an object with the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number is 1-based.
 *   - column: Optional. the column number in the original source.
 *    The column number is 0-based.
 *
 * and an array of objects is returned, each with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *    line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *    The column number is 0-based.
 */
SourceMapConsumer.prototype.allGeneratedPositionsFor =
  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
    var line = util.getArg(aArgs, 'line');

    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
    // returns the index of the closest mapping less than the needle. By
    // setting needle.originalColumn to 0, we thus find the last mapping for
    // the given line, provided such a mapping exists.
    var needle = {
      source: util.getArg(aArgs, 'source'),
      originalLine: line,
      originalColumn: util.getArg(aArgs, 'column', 0)
    };

    needle.source = this._findSourceIndex(needle.source);
    if (needle.source < 0) {
      return [];
    }

    var mappings = [];

    var index = this._findMapping(needle,
                                  this._originalMappings,
                                  "originalLine",
                                  "originalColumn",
                                  util.compareByOriginalPositions,
                                  binarySearch.LEAST_UPPER_BOUND);
    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (aArgs.column === undefined) {
        var originalLine = mapping.originalLine;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we found. Since
        // mappings are sorted, this is guaranteed to find all mappings for
        // the line we found.
        while (mapping && mapping.originalLine === originalLine) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      } else {
        var originalColumn = mapping.originalColumn;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we were searching for.
        // Since mappings are sorted, this is guaranteed to find all mappings for
        // the line we are searching for.
        while (mapping &&
               mapping.originalLine === line &&
               mapping.originalColumn == originalColumn) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      }
    }

    return mappings;
  };

exports.SourceMapConsumer = SourceMapConsumer;

/**
 * A BasicSourceMapConsumer instance represents a parsed source map which we can
 * query for information about the original file positions by giving it a file
 * position in the generated source.
 *
 * The first parameter is the raw source map (either as a JSON string, or
 * already parsed to an object). According to the spec, source maps have the
 * following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - sources: An array of URLs to the original source files.
 *   - names: An array of identifiers which can be referrenced by individual mappings.
 *   - sourceRoot: Optional. The URL root from which all sources are relative.
 *   - sourcesContent: Optional. An array of contents of the original source files.
 *   - mappings: A string of base64 VLQs which contain the actual mappings.
 *   - file: Optional. The generated file this source map is associated with.
 *
 * Here is an example source map, taken from the source map spec[0]:
 *
 *     {
 *       version : 3,
 *       file: "out.js",
 *       sourceRoot : "",
 *       sources: ["foo.js", "bar.js"],
 *       names: ["src", "maps", "are", "fun"],
 *       mappings: "AA,AB;;ABCDE;"
 *     }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
 */
function BasicSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sources = util.getArg(sourceMap, 'sources');
  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
  // requires the array) to play nice here.
  var names = util.getArg(sourceMap, 'names', []);
  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
  var mappings = util.getArg(sourceMap, 'mappings');
  var file = util.getArg(sourceMap, 'file', null);

  // Once again, Sass deviates from the spec and supplies the version as a
  // string rather than a number, so we use loose equality checking here.
  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  if (sourceRoot) {
    sourceRoot = util.normalize(sourceRoot);
  }

  sources = sources
    .map(String)
    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    .map(util.normalize)
    // Always ensure that absolute sources are internally stored relative to
    // the source root, if the source root is absolute. Not doing this would
    // be particularly problematic when the source root is a prefix of the
    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
    .map(function (source) {
      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
        ? util.relative(sourceRoot, source)
        : source;
    });

  // Pass `true` below to allow duplicate names and sources. While source maps
  // are intended to be compressed and deduplicated, the TypeScript compiler
  // sometimes generates source maps with duplicates in them. See Github issue
  // #72 and bugzil.la/889492.
  this._names = ArraySet.fromArray(names.map(String), true);
  this._sources = ArraySet.fromArray(sources, true);

  this._absoluteSources = this._sources.toArray().map(function (s) {
    return util.computeSourceURL(sourceRoot, s, aSourceMapURL);
  });

  this.sourceRoot = sourceRoot;
  this.sourcesContent = sourcesContent;
  this._mappings = mappings;
  this._sourceMapURL = aSourceMapURL;
  this.file = file;
}

BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;

/**
 * Utility function to find the index of a source.  Returns -1 if not
 * found.
 */
BasicSourceMapConsumer.prototype._findSourceIndex = function(aSource) {
  var relativeSource = aSource;
  if (this.sourceRoot != null) {
    relativeSource = util.relative(this.sourceRoot, relativeSource);
  }

  if (this._sources.has(relativeSource)) {
    return this._sources.indexOf(relativeSource);
  }

  // Maybe aSource is an absolute URL as returned by |sources|.  In
  // this case we can't simply undo the transform.
  var i;
  for (i = 0; i < this._absoluteSources.length; ++i) {
    if (this._absoluteSources[i] == aSource) {
      return i;
    }
  }

  return -1;
};

/**
 * Create a BasicSourceMapConsumer from a SourceMapGenerator.
 *
 * @param SourceMapGenerator aSourceMap
 *        The source map that will be consumed.
 * @param String aSourceMapURL
 *        The URL at which the source map can be found (optional)
 * @returns BasicSourceMapConsumer
 */
BasicSourceMapConsumer.fromSourceMap =
  function SourceMapConsumer_fromSourceMap(aSourceMap, aSourceMapURL) {
    var smc = Object.create(BasicSourceMapConsumer.prototype);

    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
    smc.sourceRoot = aSourceMap._sourceRoot;
    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                            smc.sourceRoot);
    smc.file = aSourceMap._file;
    smc._sourceMapURL = aSourceMapURL;
    smc._absoluteSources = smc._sources.toArray().map(function (s) {
      return util.computeSourceURL(smc.sourceRoot, s, aSourceMapURL);
    });

    // Because we are modifying the entries (by converting string sources and
    // names to indices into the sources and names ArraySets), we have to make
    // a copy of the entry or else bad things happen. Shared mutable state
    // strikes again! See github issue #191.

    var generatedMappings = aSourceMap._mappings.toArray().slice();
    var destGeneratedMappings = smc.__generatedMappings = [];
    var destOriginalMappings = smc.__originalMappings = [];

    for (var i = 0, length = generatedMappings.length; i < length; i++) {
      var srcMapping = generatedMappings[i];
      var destMapping = new Mapping;
      destMapping.generatedLine = srcMapping.generatedLine;
      destMapping.generatedColumn = srcMapping.generatedColumn;

      if (srcMapping.source) {
        destMapping.source = sources.indexOf(srcMapping.source);
        destMapping.originalLine = srcMapping.originalLine;
        destMapping.originalColumn = srcMapping.originalColumn;

        if (srcMapping.name) {
          destMapping.name = names.indexOf(srcMapping.name);
        }

        destOriginalMappings.push(destMapping);
      }

      destGeneratedMappings.push(destMapping);
    }

    quickSort(smc.__originalMappings, util.compareByOriginalPositions);

    return smc;
  };

/**
 * The version of the source mapping spec that we are consuming.
 */
BasicSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
  get: function () {
    return this._absoluteSources.slice();
  }
});

/**
 * Provide the JIT with a nice shape / hidden class.
 */
function Mapping() {
  this.generatedLine = 0;
  this.generatedColumn = 0;
  this.source = null;
  this.originalLine = null;
  this.originalColumn = null;
  this.name = null;
}

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
BasicSourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    var generatedLine = 1;
    var previousGeneratedColumn = 0;
    var previousOriginalLine = 0;
    var previousOriginalColumn = 0;
    var previousSource = 0;
    var previousName = 0;
    var length = aStr.length;
    var index = 0;
    var cachedSegments = {};
    var temp = {};
    var originalMappings = [];
    var generatedMappings = [];
    var mapping, str, segment, end, value;

    while (index < length) {
      if (aStr.charAt(index) === ';') {
        generatedLine++;
        index++;
        previousGeneratedColumn = 0;
      }
      else if (aStr.charAt(index) === ',') {
        index++;
      }
      else {
        mapping = new Mapping();
        mapping.generatedLine = generatedLine;

        // Because each offset is encoded relative to the previous one,
        // many segments often have the same encoding. We can exploit this
        // fact by caching the parsed variable length fields of each segment,
        // allowing us to avoid a second parse if we encounter the same
        // segment again.
        for (end = index; end < length; end++) {
          if (this._charIsMappingSeparator(aStr, end)) {
            break;
          }
        }
        str = aStr.slice(index, end);

        segment = cachedSegments[str];
        if (segment) {
          index += str.length;
        } else {
          segment = [];
          while (index < end) {
            base64VLQ.decode(aStr, index, temp);
            value = temp.value;
            index = temp.rest;
            segment.push(value);
          }

          if (segment.length === 2) {
            throw new Error('Found a source, but no line and column');
          }

          if (segment.length === 3) {
            throw new Error('Found a source and line, but no column');
          }

          cachedSegments[str] = segment;
        }

        // Generated column.
        mapping.generatedColumn = previousGeneratedColumn + segment[0];
        previousGeneratedColumn = mapping.generatedColumn;

        if (segment.length > 1) {
          // Original source.
          mapping.source = previousSource + segment[1];
          previousSource += segment[1];

          // Original line.
          mapping.originalLine = previousOriginalLine + segment[2];
          previousOriginalLine = mapping.originalLine;
          // Lines are stored 0-based
          mapping.originalLine += 1;

          // Original column.
          mapping.originalColumn = previousOriginalColumn + segment[3];
          previousOriginalColumn = mapping.originalColumn;

          if (segment.length > 4) {
            // Original name.
            mapping.name = previousName + segment[4];
            previousName += segment[4];
          }
        }

        generatedMappings.push(mapping);
        if (typeof mapping.originalLine === 'number') {
          originalMappings.push(mapping);
        }
      }
    }

    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
    this.__generatedMappings = generatedMappings;

    quickSort(originalMappings, util.compareByOriginalPositions);
    this.__originalMappings = originalMappings;
  };

/**
 * Find the mapping that best matches the hypothetical "needle" mapping that
 * we are searching for in the given "haystack" of mappings.
 */
BasicSourceMapConsumer.prototype._findMapping =
  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                         aColumnName, aComparator, aBias) {
    // To return the position we are searching for, we must first find the
    // mapping for the given position and then return the opposite position it
    // points to. Because the mappings are sorted, we can use binary search to
    // find the best mapping.

    if (aNeedle[aLineName] <= 0) {
      throw new TypeError('Line must be greater than or equal to 1, got '
                          + aNeedle[aLineName]);
    }
    if (aNeedle[aColumnName] < 0) {
      throw new TypeError('Column must be greater than or equal to 0, got '
                          + aNeedle[aColumnName]);
    }

    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
  };

/**
 * Compute the last column for each generated mapping. The last column is
 * inclusive.
 */
BasicSourceMapConsumer.prototype.computeColumnSpans =
  function SourceMapConsumer_computeColumnSpans() {
    for (var index = 0; index < this._generatedMappings.length; ++index) {
      var mapping = this._generatedMappings[index];

      // Mappings do not contain a field for the last generated columnt. We
      // can come up with an optimistic estimate, however, by assuming that
      // mappings are contiguous (i.e. given two consecutive mappings, the
      // first mapping ends where the second one starts).
      if (index + 1 < this._generatedMappings.length) {
        var nextMapping = this._generatedMappings[index + 1];

        if (mapping.generatedLine === nextMapping.generatedLine) {
          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
          continue;
        }
      }

      // The last mapping for each line spans the entire line.
      mapping.lastGeneratedColumn = Infinity;
    }
  };

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
BasicSourceMapConsumer.prototype.originalPositionFor =
  function SourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._generatedMappings,
      "generatedLine",
      "generatedColumn",
      util.compareByGeneratedPositionsDeflated,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._generatedMappings[index];

      if (mapping.generatedLine === needle.generatedLine) {
        var source = util.getArg(mapping, 'source', null);
        if (source !== null) {
          source = this._sources.at(source);
          source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL);
        }
        var name = util.getArg(mapping, 'name', null);
        if (name !== null) {
          name = this._names.at(name);
        }
        return {
          source: source,
          line: util.getArg(mapping, 'originalLine', null),
          column: util.getArg(mapping, 'originalColumn', null),
          name: name
        };
      }
    }

    return {
      source: null,
      line: null,
      column: null,
      name: null
    };
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
  function BasicSourceMapConsumer_hasContentsOfAllSources() {
    if (!this.sourcesContent) {
      return false;
    }
    return this.sourcesContent.length >= this._sources.size() &&
      !this.sourcesContent.some(function (sc) { return sc == null; });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
BasicSourceMapConsumer.prototype.sourceContentFor =
  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    if (!this.sourcesContent) {
      return null;
    }

    var index = this._findSourceIndex(aSource);
    if (index >= 0) {
      return this.sourcesContent[index];
    }

    var relativeSource = aSource;
    if (this.sourceRoot != null) {
      relativeSource = util.relative(this.sourceRoot, relativeSource);
    }

    var url;
    if (this.sourceRoot != null
        && (url = util.urlParse(this.sourceRoot))) {
      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
      // many users. We can help them out when they expect file:// URIs to
      // behave like it would if they were running a local HTTP server. See
      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
      var fileUriAbsPath = relativeSource.replace(/^file:\/\//, "");
      if (url.scheme == "file"
          && this._sources.has(fileUriAbsPath)) {
        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
      }

      if ((!url.path || url.path == "/")
          && this._sources.has("/" + relativeSource)) {
        return this.sourcesContent[this._sources.indexOf("/" + relativeSource)];
      }
    }

    // This function is used recursively from
    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
    // don't want to throw if we can't find the source - we just want to
    // return null, so we provide a flag to exit gracefully.
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + relativeSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
BasicSourceMapConsumer.prototype.generatedPositionFor =
  function SourceMapConsumer_generatedPositionFor(aArgs) {
    var source = util.getArg(aArgs, 'source');
    source = this._findSourceIndex(source);
    if (source < 0) {
      return {
        line: null,
        column: null,
        lastColumn: null
      };
    }

    var needle = {
      source: source,
      originalLine: util.getArg(aArgs, 'line'),
      originalColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._originalMappings,
      "originalLine",
      "originalColumn",
      util.compareByOriginalPositions,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (mapping.source === needle.source) {
        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null),
          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
        };
      }
    }

    return {
      line: null,
      column: null,
      lastColumn: null
    };
  };

exports.BasicSourceMapConsumer = BasicSourceMapConsumer;

/**
 * An IndexedSourceMapConsumer instance represents a parsed source map which
 * we can query for information. It differs from BasicSourceMapConsumer in
 * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
 * input.
 *
 * The first parameter is a raw source map (either as a JSON string, or already
 * parsed to an object). According to the spec for indexed source maps, they
 * have the following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - file: Optional. The generated file this source map is associated with.
 *   - sections: A list of section definitions.
 *
 * Each value under the "sections" field has two fields:
 *   - offset: The offset into the original specified at which this section
 *       begins to apply, defined as an object with a "line" and "column"
 *       field.
 *   - map: A source map definition. This source map could also be indexed,
 *       but doesn't have to be.
 *
 * Instead of the "map" field, it's also possible to have a "url" field
 * specifying a URL to retrieve a source map from, but that's currently
 * unsupported.
 *
 * Here's an example source map, taken from the source map spec[0], but
 * modified to omit a section which uses the "url" field.
 *
 *  {
 *    version : 3,
 *    file: "app.js",
 *    sections: [{
 *      offset: {line:100, column:10},
 *      map: {
 *        version : 3,
 *        file: "section.js",
 *        sources: ["foo.js", "bar.js"],
 *        names: ["src", "maps", "are", "fun"],
 *        mappings: "AAAA,E;;ABCDE;"
 *      }
 *    }],
 *  }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
 */
function IndexedSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sections = util.getArg(sourceMap, 'sections');

  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  this._sources = new ArraySet();
  this._names = new ArraySet();

  var lastOffset = {
    line: -1,
    column: 0
  };
  this._sections = sections.map(function (s) {
    if (s.url) {
      // The url field will require support for asynchronicity.
      // See https://github.com/mozilla/source-map/issues/16
      throw new Error('Support for url field in sections not implemented.');
    }
    var offset = util.getArg(s, 'offset');
    var offsetLine = util.getArg(offset, 'line');
    var offsetColumn = util.getArg(offset, 'column');

    if (offsetLine < lastOffset.line ||
        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
      throw new Error('Section offsets must be ordered and non-overlapping.');
    }
    lastOffset = offset;

    return {
      generatedOffset: {
        // The offset fields are 0-based, but we use 1-based indices when
        // encoding/decoding from VLQ.
        generatedLine: offsetLine + 1,
        generatedColumn: offsetColumn + 1
      },
      consumer: new SourceMapConsumer(util.getArg(s, 'map'), aSourceMapURL)
    }
  });
}

IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;

/**
 * The version of the source mapping spec that we are consuming.
 */
IndexedSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
  get: function () {
    var sources = [];
    for (var i = 0; i < this._sections.length; i++) {
      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
        sources.push(this._sections[i].consumer.sources[j]);
      }
    }
    return sources;
  }
});

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
IndexedSourceMapConsumer.prototype.originalPositionFor =
  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    // Find the section containing the generated position we're trying to map
    // to an original position.
    var sectionIndex = binarySearch.search(needle, this._sections,
      function(needle, section) {
        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
        if (cmp) {
          return cmp;
        }

        return (needle.generatedColumn -
                section.generatedOffset.generatedColumn);
      });
    var section = this._sections[sectionIndex];

    if (!section) {
      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    }

    return section.consumer.originalPositionFor({
      line: needle.generatedLine -
        (section.generatedOffset.generatedLine - 1),
      column: needle.generatedColumn -
        (section.generatedOffset.generatedLine === needle.generatedLine
         ? section.generatedOffset.generatedColumn - 1
         : 0),
      bias: aArgs.bias
    });
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
    return this._sections.every(function (s) {
      return s.consumer.hasContentsOfAllSources();
    });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
IndexedSourceMapConsumer.prototype.sourceContentFor =
  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      var content = section.consumer.sourceContentFor(aSource, true);
      if (content) {
        return content;
      }
    }
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + aSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based. 
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
IndexedSourceMapConsumer.prototype.generatedPositionFor =
  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      // Only consider this section if the requested source is in the list of
      // sources of the consumer.
      if (section.consumer._findSourceIndex(util.getArg(aArgs, 'source')) === -1) {
        continue;
      }
      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
      if (generatedPosition) {
        var ret = {
          line: generatedPosition.line +
            (section.generatedOffset.generatedLine - 1),
          column: generatedPosition.column +
            (section.generatedOffset.generatedLine === generatedPosition.line
             ? section.generatedOffset.generatedColumn - 1
             : 0)
        };
        return ret;
      }
    }

    return {
      line: null,
      column: null
    };
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
IndexedSourceMapConsumer.prototype._parseMappings =
  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    this.__generatedMappings = [];
    this.__originalMappings = [];
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];
      var sectionMappings = section.consumer._generatedMappings;
      for (var j = 0; j < sectionMappings.length; j++) {
        var mapping = sectionMappings[j];

        var source = section.consumer._sources.at(mapping.source);
        source = util.computeSourceURL(section.consumer.sourceRoot, source, this._sourceMapURL);
        this._sources.add(source);
        source = this._sources.indexOf(source);

        var name = null;
        if (mapping.name) {
          name = section.consumer._names.at(mapping.name);
          this._names.add(name);
          name = this._names.indexOf(name);
        }

        // The mappings coming from the consumer for the section have
        // generated positions relative to the start of the section, so we
        // need to offset them to be relative to the start of the concatenated
        // generated file.
        var adjustedMapping = {
          source: source,
          generatedLine: mapping.generatedLine +
            (section.generatedOffset.generatedLine - 1),
          generatedColumn: mapping.generatedColumn +
            (section.generatedOffset.generatedLine === mapping.generatedLine
            ? section.generatedOffset.generatedColumn - 1
            : 0),
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: name
        };

        this.__generatedMappings.push(adjustedMapping);
        if (typeof adjustedMapping.originalLine === 'number') {
          this.__originalMappings.push(adjustedMapping);
        }
      }
    }

    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
    quickSort(this.__originalMappings, util.compareByOriginalPositions);
  };

exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;


/***/ }),
/* 375 */
/*!****************************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/mapping-list.js ***!
  \****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = __webpack_require__(/*! ./util */ 142);

/**
 * Determine whether mappingB is after mappingA with respect to generated
 * position.
 */
function generatedPositionAfter(mappingA, mappingB) {
  // Optimized for most common case
  var lineA = mappingA.generatedLine;
  var lineB = mappingB.generatedLine;
  var columnA = mappingA.generatedColumn;
  var columnB = mappingB.generatedColumn;
  return lineB > lineA || lineB == lineA && columnB >= columnA ||
         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
}

/**
 * A data structure to provide a sorted view of accumulated mappings in a
 * performance conscious manner. It trades a neglibable overhead in general
 * case for a large speedup in case of mappings being added in order.
 */
function MappingList() {
  this._array = [];
  this._sorted = true;
  // Serves as infimum
  this._last = {generatedLine: -1, generatedColumn: 0};
}

/**
 * Iterate through internal items. This method takes the same arguments that
 * `Array.prototype.forEach` takes.
 *
 * NOTE: The order of the mappings is NOT guaranteed.
 */
MappingList.prototype.unsortedForEach =
  function MappingList_forEach(aCallback, aThisArg) {
    this._array.forEach(aCallback, aThisArg);
  };

/**
 * Add the given source mapping.
 *
 * @param Object aMapping
 */
MappingList.prototype.add = function MappingList_add(aMapping) {
  if (generatedPositionAfter(this._last, aMapping)) {
    this._last = aMapping;
    this._array.push(aMapping);
  } else {
    this._sorted = false;
    this._array.push(aMapping);
  }
};

/**
 * Returns the flat, sorted array of mappings. The mappings are sorted by
 * generated position.
 *
 * WARNING: This method returns internal data without copying, for
 * performance. The return value must NOT be mutated, and should be treated as
 * an immutable borrow. If you want to take ownership, you must make your own
 * copy.
 */
MappingList.prototype.toArray = function MappingList_toArray() {
  if (!this._sorted) {
    this._array.sort(util.compareByGeneratedPositionsInflated);
    this._sorted = true;
  }
  return this._array;
};

exports.MappingList = MappingList;


/***/ }),
/* 376 */
/*!**********************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/lib/base64.js ***!
  \**********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');

/**
 * Encode an integer in the range of 0 to 63 to a single base 64 digit.
 */
exports.encode = function (number) {
  if (0 <= number && number < intToCharMap.length) {
    return intToCharMap[number];
  }
  throw new TypeError("Must be between 0 and 63: " + number);
};

/**
 * Decode a single base 64 character code digit to an integer. Returns -1 on
 * failure.
 */
exports.decode = function (charCode) {
  var bigA = 65;     // 'A'
  var bigZ = 90;     // 'Z'

  var littleA = 97;  // 'a'
  var littleZ = 122; // 'z'

  var zero = 48;     // '0'
  var nine = 57;     // '9'

  var plus = 43;     // '+'
  var slash = 47;    // '/'

  var littleOffset = 26;
  var numberOffset = 52;

  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
  if (bigA <= charCode && charCode <= bigZ) {
    return (charCode - bigA);
  }

  // 26 - 51: abcdefghijklmnopqrstuvwxyz
  if (littleA <= charCode && charCode <= littleZ) {
    return (charCode - littleA + littleOffset);
  }

  // 52 - 61: 0123456789
  if (zero <= charCode && charCode <= nine) {
    return (charCode - zero + numberOffset);
  }

  // 62: +
  if (charCode == plus) {
    return 62;
  }

  // 63: /
  if (charCode == slash) {
    return 63;
  }

  // Invalid base64 digit.
  return -1;
};


/***/ }),
/* 377 */
/*!**********************************************************************!*\
  !*** ./node_modules/escodegen/node_modules/source-map/source-map.js ***!
  \**********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
exports.SourceMapGenerator = __webpack_require__(/*! ./lib/source-map-generator */ 207).SourceMapGenerator;
exports.SourceMapConsumer = __webpack_require__(/*! ./lib/source-map-consumer */ 374).SourceMapConsumer;
exports.SourceNode = __webpack_require__(/*! ./lib/source-node */ 371).SourceNode;


/***/ }),
/* 378 */
/*!*********************************************!*\
  !*** ./node_modules/esutils/lib/keyword.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var code = __webpack_require__(/*! ./code */ 208);

    function isStrictModeReservedWordES6(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isKeywordES5(id, strict) {
        // yield should not be treated as keyword under non-strict mode.
        if (!strict && id === 'yield') {
            return false;
        }
        return isKeywordES6(id, strict);
    }

    function isKeywordES6(id, strict) {
        if (strict && isStrictModeReservedWordES6(id)) {
            return true;
        }

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') || (id === 'yield') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    function isReservedWordES5(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
    }

    function isReservedWordES6(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    function isIdentifierNameES5(id) {
        var i, iz, ch;

        if (id.length === 0) { return false; }

        ch = id.charCodeAt(0);
        if (!code.isIdentifierStartES5(ch)) {
            return false;
        }

        for (i = 1, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (!code.isIdentifierPartES5(ch)) {
                return false;
            }
        }
        return true;
    }

    function decodeUtf16(lead, trail) {
        return (lead - 0xD800) * 0x400 + (trail - 0xDC00) + 0x10000;
    }

    function isIdentifierNameES6(id) {
        var i, iz, ch, lowCh, check;

        if (id.length === 0) { return false; }

        check = code.isIdentifierStartES6;
        for (i = 0, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (0xD800 <= ch && ch <= 0xDBFF) {
                ++i;
                if (i >= iz) { return false; }
                lowCh = id.charCodeAt(i);
                if (!(0xDC00 <= lowCh && lowCh <= 0xDFFF)) {
                    return false;
                }
                ch = decodeUtf16(ch, lowCh);
            }
            if (!check(ch)) {
                return false;
            }
            check = code.isIdentifierPartES6;
        }
        return true;
    }

    function isIdentifierES5(id, strict) {
        return isIdentifierNameES5(id) && !isReservedWordES5(id, strict);
    }

    function isIdentifierES6(id, strict) {
        return isIdentifierNameES6(id) && !isReservedWordES6(id, strict);
    }

    module.exports = {
        isKeywordES5: isKeywordES5,
        isKeywordES6: isKeywordES6,
        isReservedWordES5: isReservedWordES5,
        isReservedWordES6: isReservedWordES6,
        isRestrictedWord: isRestrictedWord,
        isIdentifierNameES5: isIdentifierNameES5,
        isIdentifierNameES6: isIdentifierNameES6,
        isIdentifierES5: isIdentifierES5,
        isIdentifierES6: isIdentifierES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */


/***/ }),
/* 379 */
/*!*****************************************!*\
  !*** ./node_modules/esutils/lib/ast.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    function isExpression(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'ArrayExpression':
            case 'AssignmentExpression':
            case 'BinaryExpression':
            case 'CallExpression':
            case 'ConditionalExpression':
            case 'FunctionExpression':
            case 'Identifier':
            case 'Literal':
            case 'LogicalExpression':
            case 'MemberExpression':
            case 'NewExpression':
            case 'ObjectExpression':
            case 'SequenceExpression':
            case 'ThisExpression':
            case 'UnaryExpression':
            case 'UpdateExpression':
                return true;
        }
        return false;
    }

    function isIterationStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'DoWhileStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'WhileStatement':
                return true;
        }
        return false;
    }

    function isStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'BlockStatement':
            case 'BreakStatement':
            case 'ContinueStatement':
            case 'DebuggerStatement':
            case 'DoWhileStatement':
            case 'EmptyStatement':
            case 'ExpressionStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'IfStatement':
            case 'LabeledStatement':
            case 'ReturnStatement':
            case 'SwitchStatement':
            case 'ThrowStatement':
            case 'TryStatement':
            case 'VariableDeclaration':
            case 'WhileStatement':
            case 'WithStatement':
                return true;
        }
        return false;
    }

    function isSourceElement(node) {
      return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
    }

    function trailingStatement(node) {
        switch (node.type) {
        case 'IfStatement':
            if (node.alternate != null) {
                return node.alternate;
            }
            return node.consequent;

        case 'LabeledStatement':
        case 'ForStatement':
        case 'ForInStatement':
        case 'WhileStatement':
        case 'WithStatement':
            return node.body;
        }
        return null;
    }

    function isProblematicIfStatement(node) {
        var current;

        if (node.type !== 'IfStatement') {
            return false;
        }
        if (node.alternate == null) {
            return false;
        }
        current = node.consequent;
        do {
            if (current.type === 'IfStatement') {
                if (current.alternate == null)  {
                    return true;
                }
            }
            current = trailingStatement(current);
        } while (current);

        return false;
    }

    module.exports = {
        isExpression: isExpression,
        isStatement: isStatement,
        isIterationStatement: isIterationStatement,
        isSourceElement: isSourceElement,
        isProblematicIfStatement: isProblematicIfStatement,

        trailingStatement: trailingStatement
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */


/***/ }),
/* 380 */
/*!*******************************************!*\
  !*** ./node_modules/esutils/lib/utils.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


(function () {
    'use strict';

    exports.ast = __webpack_require__(/*! ./ast */ 379);
    exports.code = __webpack_require__(/*! ./code */ 208);
    exports.keyword = __webpack_require__(/*! ./keyword */ 378);
}());
/* vim: set sw=4 ts=4 et tw=80 : */


/***/ }),
/* 381 */
/*!**********************************************!*\
  !*** ./node_modules/estraverse/package.json ***!
  \**********************************************/
/*! exports provided: _args, _from, _id, _inBundle, _integrity, _location, _phantomChildren, _requested, _requiredBy, _resolved, _spec, _where, bugs, description, devDependencies, engines, homepage, license, main, maintainers, name, repository, scripts, version, default */
/*! all exports used */
/***/ (function(module) {

module.exports = {"_args":[["estraverse@4.2.0","C:\\Users\\danie\\Desktop\\bitburner"]],"_from":"estraverse@4.2.0","_id":"estraverse@4.2.0","_inBundle":false,"_integrity":"sha1-De4/7TH81GlhjOc0IJn8GvoL2xM=","_location":"/estraverse","_phantomChildren":{},"_requested":{"type":"version","registry":true,"raw":"estraverse@4.2.0","name":"estraverse","escapedName":"estraverse","rawSpec":"4.2.0","saveSpec":null,"fetchSpec":"4.2.0"},"_requiredBy":["/escodegen","/escope","/eslint-scope","/esquery","/esrecurse"],"_resolved":"https://registry.npmjs.org/estraverse/-/estraverse-4.2.0.tgz","_spec":"4.2.0","_where":"C:\\Users\\danie\\Desktop\\bitburner","bugs":{"url":"https://github.com/estools/estraverse/issues"},"description":"ECMAScript JS AST traversal functions","devDependencies":{"babel-preset-es2015":"^6.3.13","babel-register":"^6.3.13","chai":"^2.1.1","espree":"^1.11.0","gulp":"^3.8.10","gulp-bump":"^0.2.2","gulp-filter":"^2.0.0","gulp-git":"^1.0.1","gulp-tag-version":"^1.2.1","jshint":"^2.5.6","mocha":"^2.1.0"},"engines":{"node":">=0.10.0"},"homepage":"https://github.com/estools/estraverse","license":"BSD-2-Clause","main":"estraverse.js","maintainers":[{"name":"Yusuke Suzuki","email":"utatane.tea@gmail.com","url":"http://github.com/Constellation"}],"name":"estraverse","repository":{"type":"git","url":"git+ssh://git@github.com/estools/estraverse.git"},"scripts":{"lint":"jshint estraverse.js","test":"npm run-script lint && npm run-script unit-test","unit-test":"mocha --compilers js:babel-register"},"version":"4.2.0"};

/***/ }),
/* 382 */
/*!***********************************************!*\
  !*** ./node_modules/estraverse/estraverse.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*jslint vars:false, bitwise:true*/
/*jshint indent:4*/
/*global exports:true*/
(function clone(exports) {
    'use strict';

    var Syntax,
        isArray,
        VisitorOption,
        VisitorKeys,
        objectCreate,
        objectKeys,
        BREAK,
        SKIP,
        REMOVE;

    function ignoreJSHintError() { }

    isArray = Array.isArray;
    if (!isArray) {
        isArray = function isArray(array) {
            return Object.prototype.toString.call(array) === '[object Array]';
        };
    }

    function deepCopy(obj) {
        var ret = {}, key, val;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                val = obj[key];
                if (typeof val === 'object' && val !== null) {
                    ret[key] = deepCopy(val);
                } else {
                    ret[key] = val;
                }
            }
        }
        return ret;
    }

    function shallowCopy(obj) {
        var ret = {}, key;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                ret[key] = obj[key];
            }
        }
        return ret;
    }
    ignoreJSHintError(shallowCopy);

    // based on LLVM libc++ upper_bound / lower_bound
    // MIT License

    function upperBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                len = diff;
            } else {
                i = current + 1;
                len -= diff + 1;
            }
        }
        return i;
    }

    function lowerBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                i = current + 1;
                len -= diff + 1;
            } else {
                len = diff;
            }
        }
        return i;
    }
    ignoreJSHintError(lowerBound);

    objectCreate = Object.create || (function () {
        function F() { }

        return function (o) {
            F.prototype = o;
            return new F();
        };
    })();

    objectKeys = Object.keys || function (o) {
        var keys = [], key;
        for (key in o) {
            keys.push(key);
        }
        return keys;
    };

    function extend(to, from) {
        var keys = objectKeys(from), key, i, len;
        for (i = 0, len = keys.length; i < len; i += 1) {
            key = keys[i];
            to[key] = from[key];
        }
        return to;
    }

    Syntax = {
        AssignmentExpression: 'AssignmentExpression',
        AssignmentPattern: 'AssignmentPattern',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AwaitExpression: 'AwaitExpression', // CAUTION: It's deferred to ES7.
        BlockStatement: 'BlockStatement',
        BinaryExpression: 'BinaryExpression',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ComprehensionBlock: 'ComprehensionBlock',  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: 'ComprehensionExpression',  // CAUTION: It's deferred to ES7.
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DirectiveStatement: 'DirectiveStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportAllDeclaration: 'ExportAllDeclaration',
        ExportDefaultDeclaration: 'ExportDefaultDeclaration',
        ExportNamedDeclaration: 'ExportNamedDeclaration',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForStatement: 'ForStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        GeneratorExpression: 'GeneratorExpression',  // CAUTION: It's deferred to ES7.
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        Literal: 'Literal',
        LabeledStatement: 'LabeledStatement',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MetaProperty: 'MetaProperty',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        Program: 'Program',
        Property: 'Property',
        RestElement: 'RestElement',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        Super: 'Super',
        SwitchStatement: 'SwitchStatement',
        SwitchCase: 'SwitchCase',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        UnaryExpression: 'UnaryExpression',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        YieldExpression: 'YieldExpression'
    };

    VisitorKeys = {
        AssignmentExpression: ['left', 'right'],
        AssignmentPattern: ['left', 'right'],
        ArrayExpression: ['elements'],
        ArrayPattern: ['elements'],
        ArrowFunctionExpression: ['params', 'body'],
        AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
        BlockStatement: ['body'],
        BinaryExpression: ['left', 'right'],
        BreakStatement: ['label'],
        CallExpression: ['callee', 'arguments'],
        CatchClause: ['param', 'body'],
        ClassBody: ['body'],
        ClassDeclaration: ['id', 'superClass', 'body'],
        ClassExpression: ['id', 'superClass', 'body'],
        ComprehensionBlock: ['left', 'right'],  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        ConditionalExpression: ['test', 'consequent', 'alternate'],
        ContinueStatement: ['label'],
        DebuggerStatement: [],
        DirectiveStatement: [],
        DoWhileStatement: ['body', 'test'],
        EmptyStatement: [],
        ExportAllDeclaration: ['source'],
        ExportDefaultDeclaration: ['declaration'],
        ExportNamedDeclaration: ['declaration', 'specifiers', 'source'],
        ExportSpecifier: ['exported', 'local'],
        ExpressionStatement: ['expression'],
        ForStatement: ['init', 'test', 'update', 'body'],
        ForInStatement: ['left', 'right', 'body'],
        ForOfStatement: ['left', 'right', 'body'],
        FunctionDeclaration: ['id', 'params', 'body'],
        FunctionExpression: ['id', 'params', 'body'],
        GeneratorExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        Identifier: [],
        IfStatement: ['test', 'consequent', 'alternate'],
        ImportDeclaration: ['specifiers', 'source'],
        ImportDefaultSpecifier: ['local'],
        ImportNamespaceSpecifier: ['local'],
        ImportSpecifier: ['imported', 'local'],
        Literal: [],
        LabeledStatement: ['label', 'body'],
        LogicalExpression: ['left', 'right'],
        MemberExpression: ['object', 'property'],
        MetaProperty: ['meta', 'property'],
        MethodDefinition: ['key', 'value'],
        ModuleSpecifier: [],
        NewExpression: ['callee', 'arguments'],
        ObjectExpression: ['properties'],
        ObjectPattern: ['properties'],
        Program: ['body'],
        Property: ['key', 'value'],
        RestElement: [ 'argument' ],
        ReturnStatement: ['argument'],
        SequenceExpression: ['expressions'],
        SpreadElement: ['argument'],
        Super: [],
        SwitchStatement: ['discriminant', 'cases'],
        SwitchCase: ['test', 'consequent'],
        TaggedTemplateExpression: ['tag', 'quasi'],
        TemplateElement: [],
        TemplateLiteral: ['quasis', 'expressions'],
        ThisExpression: [],
        ThrowStatement: ['argument'],
        TryStatement: ['block', 'handler', 'finalizer'],
        UnaryExpression: ['argument'],
        UpdateExpression: ['argument'],
        VariableDeclaration: ['declarations'],
        VariableDeclarator: ['id', 'init'],
        WhileStatement: ['test', 'body'],
        WithStatement: ['object', 'body'],
        YieldExpression: ['argument']
    };

    // unique id
    BREAK = {};
    SKIP = {};
    REMOVE = {};

    VisitorOption = {
        Break: BREAK,
        Skip: SKIP,
        Remove: REMOVE
    };

    function Reference(parent, key) {
        this.parent = parent;
        this.key = key;
    }

    Reference.prototype.replace = function replace(node) {
        this.parent[this.key] = node;
    };

    Reference.prototype.remove = function remove() {
        if (isArray(this.parent)) {
            this.parent.splice(this.key, 1);
            return true;
        } else {
            this.replace(null);
            return false;
        }
    };

    function Element(node, path, wrap, ref) {
        this.node = node;
        this.path = path;
        this.wrap = wrap;
        this.ref = ref;
    }

    function Controller() { }

    // API:
    // return property path array from root to current node
    Controller.prototype.path = function path() {
        var i, iz, j, jz, result, element;

        function addToPath(result, path) {
            if (isArray(path)) {
                for (j = 0, jz = path.length; j < jz; ++j) {
                    result.push(path[j]);
                }
            } else {
                result.push(path);
            }
        }

        // root node
        if (!this.__current.path) {
            return null;
        }

        // first node is sentinel, second node is root element
        result = [];
        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
            element = this.__leavelist[i];
            addToPath(result, element.path);
        }
        addToPath(result, this.__current.path);
        return result;
    };

    // API:
    // return type of current node
    Controller.prototype.type = function () {
        var node = this.current();
        return node.type || this.__current.wrap;
    };

    // API:
    // return array of parent elements
    Controller.prototype.parents = function parents() {
        var i, iz, result;

        // first node is sentinel
        result = [];
        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
            result.push(this.__leavelist[i].node);
        }

        return result;
    };

    // API:
    // return current node
    Controller.prototype.current = function current() {
        return this.__current.node;
    };

    Controller.prototype.__execute = function __execute(callback, element) {
        var previous, result;

        result = undefined;

        previous  = this.__current;
        this.__current = element;
        this.__state = null;
        if (callback) {
            result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
        }
        this.__current = previous;

        return result;
    };

    // API:
    // notify control skip / break
    Controller.prototype.notify = function notify(flag) {
        this.__state = flag;
    };

    // API:
    // skip child nodes of current node
    Controller.prototype.skip = function () {
        this.notify(SKIP);
    };

    // API:
    // break traversals
    Controller.prototype['break'] = function () {
        this.notify(BREAK);
    };

    // API:
    // remove node
    Controller.prototype.remove = function () {
        this.notify(REMOVE);
    };

    Controller.prototype.__initialize = function(root, visitor) {
        this.visitor = visitor;
        this.root = root;
        this.__worklist = [];
        this.__leavelist = [];
        this.__current = null;
        this.__state = null;
        this.__fallback = null;
        if (visitor.fallback === 'iteration') {
            this.__fallback = objectKeys;
        } else if (typeof visitor.fallback === 'function') {
            this.__fallback = visitor.fallback;
        }

        this.__keys = VisitorKeys;
        if (visitor.keys) {
            this.__keys = extend(objectCreate(this.__keys), visitor.keys);
        }
    };

    function isNode(node) {
        if (node == null) {
            return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
    }

    function isProperty(nodeType, key) {
        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
    }

    Controller.prototype.traverse = function traverse(root, visitor) {
        var worklist,
            leavelist,
            element,
            node,
            nodeType,
            ret,
            key,
            current,
            current2,
            candidates,
            candidate,
            sentinel;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        worklist.push(new Element(root, null, null, null));
        leavelist.push(new Element(null, null, null, null));

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                ret = this.__execute(visitor.leave, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }
                continue;
            }

            if (element.node) {

                ret = this.__execute(visitor.enter, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }

                worklist.push(sentinel);
                leavelist.push(element);

                if (this.__state === SKIP || ret === SKIP) {
                    continue;
                }

                node = element.node;
                nodeType = node.type || element.wrap;
                candidates = this.__keys[nodeType];
                if (!candidates) {
                    if (this.__fallback) {
                        candidates = this.__fallback(node);
                    } else {
                        throw new Error('Unknown node type ' + nodeType + '.');
                    }
                }

                current = candidates.length;
                while ((current -= 1) >= 0) {
                    key = candidates[current];
                    candidate = node[key];
                    if (!candidate) {
                        continue;
                    }

                    if (isArray(candidate)) {
                        current2 = candidate.length;
                        while ((current2 -= 1) >= 0) {
                            if (!candidate[current2]) {
                                continue;
                            }
                            if (isProperty(nodeType, candidates[current])) {
                                element = new Element(candidate[current2], [key, current2], 'Property', null);
                            } else if (isNode(candidate[current2])) {
                                element = new Element(candidate[current2], [key, current2], null, null);
                            } else {
                                continue;
                            }
                            worklist.push(element);
                        }
                    } else if (isNode(candidate)) {
                        worklist.push(new Element(candidate, key, null, null));
                    }
                }
            }
        }
    };

    Controller.prototype.replace = function replace(root, visitor) {
        var worklist,
            leavelist,
            node,
            nodeType,
            target,
            element,
            current,
            current2,
            candidates,
            candidate,
            sentinel,
            outer,
            key;

        function removeElem(element) {
            var i,
                key,
                nextElem,
                parent;

            if (element.ref.remove()) {
                // When the reference is an element of an array.
                key = element.ref.key;
                parent = element.ref.parent;

                // If removed from array, then decrease following items' keys.
                i = worklist.length;
                while (i--) {
                    nextElem = worklist[i];
                    if (nextElem.ref && nextElem.ref.parent === parent) {
                        if  (nextElem.ref.key < key) {
                            break;
                        }
                        --nextElem.ref.key;
                    }
                }
            }
        }

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        outer = {
            root: root
        };
        element = new Element(root, null, null, new Reference(outer, 'root'));
        worklist.push(element);
        leavelist.push(element);

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                target = this.__execute(visitor.leave, element);

                // node may be replaced with null,
                // so distinguish between undefined and null in this place
                if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                    // replace
                    element.ref.replace(target);
                }

                if (this.__state === REMOVE || target === REMOVE) {
                    removeElem(element);
                }

                if (this.__state === BREAK || target === BREAK) {
                    return outer.root;
                }
                continue;
            }

            target = this.__execute(visitor.enter, element);

            // node may be replaced with null,
            // so distinguish between undefined and null in this place
            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                // replace
                element.ref.replace(target);
                element.node = target;
            }

            if (this.__state === REMOVE || target === REMOVE) {
                removeElem(element);
                element.node = null;
            }

            if (this.__state === BREAK || target === BREAK) {
                return outer.root;
            }

            // node may be null
            node = element.node;
            if (!node) {
                continue;
            }

            worklist.push(sentinel);
            leavelist.push(element);

            if (this.__state === SKIP || target === SKIP) {
                continue;
            }

            nodeType = node.type || element.wrap;
            candidates = this.__keys[nodeType];
            if (!candidates) {
                if (this.__fallback) {
                    candidates = this.__fallback(node);
                } else {
                    throw new Error('Unknown node type ' + nodeType + '.');
                }
            }

            current = candidates.length;
            while ((current -= 1) >= 0) {
                key = candidates[current];
                candidate = node[key];
                if (!candidate) {
                    continue;
                }

                if (isArray(candidate)) {
                    current2 = candidate.length;
                    while ((current2 -= 1) >= 0) {
                        if (!candidate[current2]) {
                            continue;
                        }
                        if (isProperty(nodeType, candidates[current])) {
                            element = new Element(candidate[current2], [key, current2], 'Property', new Reference(candidate, current2));
                        } else if (isNode(candidate[current2])) {
                            element = new Element(candidate[current2], [key, current2], null, new Reference(candidate, current2));
                        } else {
                            continue;
                        }
                        worklist.push(element);
                    }
                } else if (isNode(candidate)) {
                    worklist.push(new Element(candidate, key, null, new Reference(node, key)));
                }
            }
        }

        return outer.root;
    };

    function traverse(root, visitor) {
        var controller = new Controller();
        return controller.traverse(root, visitor);
    }

    function replace(root, visitor) {
        var controller = new Controller();
        return controller.replace(root, visitor);
    }

    function extendCommentRange(comment, tokens) {
        var target;

        target = upperBound(tokens, function search(token) {
            return token.range[0] > comment.range[0];
        });

        comment.extendedRange = [comment.range[0], comment.range[1]];

        if (target !== tokens.length) {
            comment.extendedRange[1] = tokens[target].range[0];
        }

        target -= 1;
        if (target >= 0) {
            comment.extendedRange[0] = tokens[target].range[1];
        }

        return comment;
    }

    function attachComments(tree, providedComments, tokens) {
        // At first, we should calculate extended comment ranges.
        var comments = [], comment, len, i, cursor;

        if (!tree.range) {
            throw new Error('attachComments needs range information');
        }

        // tokens array is empty, we attach comments to tree as 'leadingComments'
        if (!tokens.length) {
            if (providedComments.length) {
                for (i = 0, len = providedComments.length; i < len; i += 1) {
                    comment = deepCopy(providedComments[i]);
                    comment.extendedRange = [0, tree.range[0]];
                    comments.push(comment);
                }
                tree.leadingComments = comments;
            }
            return tree;
        }

        for (i = 0, len = providedComments.length; i < len; i += 1) {
            comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
        }

        // This is based on John Freeman's implementation.
        cursor = 0;
        traverse(tree, {
            enter: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (comment.extendedRange[1] > node.range[0]) {
                        break;
                    }

                    if (comment.extendedRange[1] === node.range[0]) {
                        if (!node.leadingComments) {
                            node.leadingComments = [];
                        }
                        node.leadingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        cursor = 0;
        traverse(tree, {
            leave: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (node.range[1] < comment.extendedRange[0]) {
                        break;
                    }

                    if (node.range[1] === comment.extendedRange[0]) {
                        if (!node.trailingComments) {
                            node.trailingComments = [];
                        }
                        node.trailingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        return tree;
    }

    exports.version = __webpack_require__(/*! ./package.json */ 381).version;
    exports.Syntax = Syntax;
    exports.traverse = traverse;
    exports.replace = replace;
    exports.attachComments = attachComments;
    exports.VisitorKeys = VisitorKeys;
    exports.VisitorOption = VisitorOption;
    exports.Controller = Controller;
    exports.cloneEnvironment = function () { return clone({}); };

    return exports;
}(exports));
/* vim: set sw=4 ts=4 et tw=80 : */


/***/ }),
/* 383 */,
/* 384 */,
/* 385 */,
/* 386 */
/*!****************************************!*\
  !*** (webpack)/buildin/amd-options.js ***!
  \****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/* WEBPACK VAR INJECTION */(function(__webpack_amd_options__) {/* globals __webpack_amd_options__ */
module.exports = __webpack_amd_options__;

/* WEBPACK VAR INJECTION */}.call(this, {}))

/***/ }),
/* 387 */
/*!********************************************!*\
  !*** ./node_modules/jszip/lib/zipEntry.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var readerFor = __webpack_require__(/*! ./reader/readerFor */ 212);
var utils = __webpack_require__(/*! ./utils */ 60);
var CompressedObject = __webpack_require__(/*! ./compressedObject */ 185);
var crc32fn = __webpack_require__(/*! ./crc32 */ 184);
var utf8 = __webpack_require__(/*! ./utf8 */ 132);
var compressions = __webpack_require__(/*! ./compressions */ 219);
var support = __webpack_require__(/*! ./support */ 113);

var MADE_BY_DOS = 0x00;
var MADE_BY_UNIX = 0x03;

/**
 * Find a compression registered in JSZip.
 * @param {string} compressionMethod the method magic to find.
 * @return {Object|null} the JSZip compression object, null if none found.
 */
var findCompression = function(compressionMethod) {
    for (var method in compressions) {
        if (!compressions.hasOwnProperty(method)) {
            continue;
        }
        if (compressions[method].magic === compressionMethod) {
            return compressions[method];
        }
    }
    return null;
};

// class ZipEntry {{{
/**
 * An entry in the zip file.
 * @constructor
 * @param {Object} options Options of the current file.
 * @param {Object} loadOptions Options for loading the stream.
 */
function ZipEntry(options, loadOptions) {
    this.options = options;
    this.loadOptions = loadOptions;
}
ZipEntry.prototype = {
    /**
     * say if the file is encrypted.
     * @return {boolean} true if the file is encrypted, false otherwise.
     */
    isEncrypted: function() {
        // bit 1 is set
        return (this.bitFlag & 0x0001) === 0x0001;
    },
    /**
     * say if the file has utf-8 filename/comment.
     * @return {boolean} true if the filename/comment is in utf-8, false otherwise.
     */
    useUTF8: function() {
        // bit 11 is set
        return (this.bitFlag & 0x0800) === 0x0800;
    },
    /**
     * Read the local part of a zip file and add the info in this object.
     * @param {DataReader} reader the reader to use.
     */
    readLocalPart: function(reader) {
        var compression, localExtraFieldsLength;

        // we already know everything from the central dir !
        // If the central dir data are false, we are doomed.
        // On the bright side, the local part is scary  : zip64, data descriptors, both, etc.
        // The less data we get here, the more reliable this should be.
        // Let's skip the whole header and dash to the data !
        reader.skip(22);
        // in some zip created on windows, the filename stored in the central dir contains \ instead of /.
        // Strangely, the filename here is OK.
        // I would love to treat these zip files as corrupted (see http://www.info-zip.org/FAQ.html#backslashes
        // or APPNOTE#4.4.17.1, "All slashes MUST be forward slashes '/'") but there are a lot of bad zip generators...
        // Search "unzip mismatching "local" filename continuing with "central" filename version" on
        // the internet.
        //
        // I think I see the logic here : the central directory is used to display
        // content and the local directory is used to extract the files. Mixing / and \
        // may be used to display \ to windows users and use / when extracting the files.
        // Unfortunately, this lead also to some issues : http://seclists.org/fulldisclosure/2009/Sep/394
        this.fileNameLength = reader.readInt(2);
        localExtraFieldsLength = reader.readInt(2); // can't be sure this will be the same as the central dir
        // the fileName is stored as binary data, the handleUTF8 method will take care of the encoding.
        this.fileName = reader.readData(this.fileNameLength);
        reader.skip(localExtraFieldsLength);

        if (this.compressedSize === -1 || this.uncompressedSize === -1) {
            throw new Error("Bug or corrupted zip : didn't get enough informations from the central directory " + "(compressedSize === -1 || uncompressedSize === -1)");
        }

        compression = findCompression(this.compressionMethod);
        if (compression === null) { // no compression found
            throw new Error("Corrupted zip : compression " + utils.pretty(this.compressionMethod) + " unknown (inner file : " + utils.transformTo("string", this.fileName) + ")");
        }
        this.decompressed = new CompressedObject(this.compressedSize, this.uncompressedSize, this.crc32, compression, reader.readData(this.compressedSize));
    },

    /**
     * Read the central part of a zip file and add the info in this object.
     * @param {DataReader} reader the reader to use.
     */
    readCentralPart: function(reader) {
        this.versionMadeBy = reader.readInt(2);
        reader.skip(2);
        // this.versionNeeded = reader.readInt(2);
        this.bitFlag = reader.readInt(2);
        this.compressionMethod = reader.readString(2);
        this.date = reader.readDate();
        this.crc32 = reader.readInt(4);
        this.compressedSize = reader.readInt(4);
        this.uncompressedSize = reader.readInt(4);
        var fileNameLength = reader.readInt(2);
        this.extraFieldsLength = reader.readInt(2);
        this.fileCommentLength = reader.readInt(2);
        this.diskNumberStart = reader.readInt(2);
        this.internalFileAttributes = reader.readInt(2);
        this.externalFileAttributes = reader.readInt(4);
        this.localHeaderOffset = reader.readInt(4);

        if (this.isEncrypted()) {
            throw new Error("Encrypted zip are not supported");
        }

        // will be read in the local part, see the comments there
        reader.skip(fileNameLength);
        this.readExtraFields(reader);
        this.parseZIP64ExtraField(reader);
        this.fileComment = reader.readData(this.fileCommentLength);
    },

    /**
     * Parse the external file attributes and get the unix/dos permissions.
     */
    processAttributes: function () {
        this.unixPermissions = null;
        this.dosPermissions = null;
        var madeBy = this.versionMadeBy >> 8;

        // Check if we have the DOS directory flag set.
        // We look for it in the DOS and UNIX permissions
        // but some unknown platform could set it as a compatibility flag.
        this.dir = this.externalFileAttributes & 0x0010 ? true : false;

        if(madeBy === MADE_BY_DOS) {
            // first 6 bits (0 to 5)
            this.dosPermissions = this.externalFileAttributes & 0x3F;
        }

        if(madeBy === MADE_BY_UNIX) {
            this.unixPermissions = (this.externalFileAttributes >> 16) & 0xFFFF;
            // the octal permissions are in (this.unixPermissions & 0x01FF).toString(8);
        }

        // fail safe : if the name ends with a / it probably means a folder
        if (!this.dir && this.fileNameStr.slice(-1) === '/') {
            this.dir = true;
        }
    },

    /**
     * Parse the ZIP64 extra field and merge the info in the current ZipEntry.
     * @param {DataReader} reader the reader to use.
     */
    parseZIP64ExtraField: function(reader) {

        if (!this.extraFields[0x0001]) {
            return;
        }

        // should be something, preparing the extra reader
        var extraReader = readerFor(this.extraFields[0x0001].value);

        // I really hope that these 64bits integer can fit in 32 bits integer, because js
        // won't let us have more.
        if (this.uncompressedSize === utils.MAX_VALUE_32BITS) {
            this.uncompressedSize = extraReader.readInt(8);
        }
        if (this.compressedSize === utils.MAX_VALUE_32BITS) {
            this.compressedSize = extraReader.readInt(8);
        }
        if (this.localHeaderOffset === utils.MAX_VALUE_32BITS) {
            this.localHeaderOffset = extraReader.readInt(8);
        }
        if (this.diskNumberStart === utils.MAX_VALUE_32BITS) {
            this.diskNumberStart = extraReader.readInt(4);
        }
    },
    /**
     * Read the central part of a zip file and add the info in this object.
     * @param {DataReader} reader the reader to use.
     */
    readExtraFields: function(reader) {
        var end = reader.index + this.extraFieldsLength,
            extraFieldId,
            extraFieldLength,
            extraFieldValue;

        if (!this.extraFields) {
            this.extraFields = {};
        }

        while (reader.index < end) {
            extraFieldId = reader.readInt(2);
            extraFieldLength = reader.readInt(2);
            extraFieldValue = reader.readData(extraFieldLength);

            this.extraFields[extraFieldId] = {
                id: extraFieldId,
                length: extraFieldLength,
                value: extraFieldValue
            };
        }
    },
    /**
     * Apply an UTF8 transformation if needed.
     */
    handleUTF8: function() {
        var decodeParamType = support.uint8array ? "uint8array" : "array";
        if (this.useUTF8()) {
            this.fileNameStr = utf8.utf8decode(this.fileName);
            this.fileCommentStr = utf8.utf8decode(this.fileComment);
        } else {
            var upath = this.findExtraFieldUnicodePath();
            if (upath !== null) {
                this.fileNameStr = upath;
            } else {
                // ASCII text or unsupported code page
                var fileNameByteArray =  utils.transformTo(decodeParamType, this.fileName);
                this.fileNameStr = this.loadOptions.decodeFileName(fileNameByteArray);
            }

            var ucomment = this.findExtraFieldUnicodeComment();
            if (ucomment !== null) {
                this.fileCommentStr = ucomment;
            } else {
                // ASCII text or unsupported code page
                var commentByteArray =  utils.transformTo(decodeParamType, this.fileComment);
                this.fileCommentStr = this.loadOptions.decodeFileName(commentByteArray);
            }
        }
    },

    /**
     * Find the unicode path declared in the extra field, if any.
     * @return {String} the unicode path, null otherwise.
     */
    findExtraFieldUnicodePath: function() {
        var upathField = this.extraFields[0x7075];
        if (upathField) {
            var extraReader = readerFor(upathField.value);

            // wrong version
            if (extraReader.readInt(1) !== 1) {
                return null;
            }

            // the crc of the filename changed, this field is out of date.
            if (crc32fn(this.fileName) !== extraReader.readInt(4)) {
                return null;
            }

            return utf8.utf8decode(extraReader.readData(upathField.length - 5));
        }
        return null;
    },

    /**
     * Find the unicode comment declared in the extra field, if any.
     * @return {String} the unicode comment, null otherwise.
     */
    findExtraFieldUnicodeComment: function() {
        var ucommentField = this.extraFields[0x6375];
        if (ucommentField) {
            var extraReader = readerFor(ucommentField.value);

            // wrong version
            if (extraReader.readInt(1) !== 1) {
                return null;
            }

            // the crc of the comment changed, this field is out of date.
            if (crc32fn(this.fileComment) !== extraReader.readInt(4)) {
                return null;
            }

            return utf8.utf8decode(extraReader.readData(ucommentField.length - 5));
        }
        return null;
    }
};
module.exports = ZipEntry;


/***/ }),
/* 388 */
/*!***********************************************************!*\
  !*** ./node_modules/jszip/lib/reader/NodeBufferReader.js ***!
  \***********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var Uint8ArrayReader = __webpack_require__(/*! ./Uint8ArrayReader */ 209);
var utils = __webpack_require__(/*! ../utils */ 60);

function NodeBufferReader(data) {
    Uint8ArrayReader.call(this, data);
}
utils.inherits(NodeBufferReader, Uint8ArrayReader);

/**
 * @see DataReader.readData
 */
NodeBufferReader.prototype.readData = function(size) {
    this.checkOffset(size);
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = NodeBufferReader;


/***/ }),
/* 389 */
/*!*******************************************************!*\
  !*** ./node_modules/jszip/lib/reader/StringReader.js ***!
  \*******************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var DataReader = __webpack_require__(/*! ./DataReader */ 210);
var utils = __webpack_require__(/*! ../utils */ 60);

function StringReader(data) {
    DataReader.call(this, data);
}
utils.inherits(StringReader, DataReader);
/**
 * @see DataReader.byteAt
 */
StringReader.prototype.byteAt = function(i) {
    return this.data.charCodeAt(this.zero + i);
};
/**
 * @see DataReader.lastIndexOfSignature
 */
StringReader.prototype.lastIndexOfSignature = function(sig) {
    return this.data.lastIndexOf(sig) - this.zero;
};
/**
 * @see DataReader.readAndCheckSignature
 */
StringReader.prototype.readAndCheckSignature = function (sig) {
    var data = this.readData(4);
    return sig === data;
};
/**
 * @see DataReader.readData
 */
StringReader.prototype.readData = function(size) {
    this.checkOffset(size);
    // this will work because the constructor applied the "& 0xff" mask.
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = StringReader;


/***/ }),
/* 390 */
/*!**********************************************!*\
  !*** ./node_modules/jszip/lib/zipEntries.js ***!
  \**********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var readerFor = __webpack_require__(/*! ./reader/readerFor */ 212);
var utils = __webpack_require__(/*! ./utils */ 60);
var sig = __webpack_require__(/*! ./signature */ 213);
var ZipEntry = __webpack_require__(/*! ./zipEntry */ 387);
var utf8 = __webpack_require__(/*! ./utf8 */ 132);
var support = __webpack_require__(/*! ./support */ 113);
//  class ZipEntries {{{
/**
 * All the entries in the zip file.
 * @constructor
 * @param {Object} loadOptions Options for loading the stream.
 */
function ZipEntries(loadOptions) {
    this.files = [];
    this.loadOptions = loadOptions;
}
ZipEntries.prototype = {
    /**
     * Check that the reader is on the specified signature.
     * @param {string} expectedSignature the expected signature.
     * @throws {Error} if it is an other signature.
     */
    checkSignature: function(expectedSignature) {
        if (!this.reader.readAndCheckSignature(expectedSignature)) {
            this.reader.index -= 4;
            var signature = this.reader.readString(4);
            throw new Error("Corrupted zip or bug: unexpected signature " + "(" + utils.pretty(signature) + ", expected " + utils.pretty(expectedSignature) + ")");
        }
    },
    /**
     * Check if the given signature is at the given index.
     * @param {number} askedIndex the index to check.
     * @param {string} expectedSignature the signature to expect.
     * @return {boolean} true if the signature is here, false otherwise.
     */
    isSignature: function(askedIndex, expectedSignature) {
        var currentIndex = this.reader.index;
        this.reader.setIndex(askedIndex);
        var signature = this.reader.readString(4);
        var result = signature === expectedSignature;
        this.reader.setIndex(currentIndex);
        return result;
    },
    /**
     * Read the end of the central directory.
     */
    readBlockEndOfCentral: function() {
        this.diskNumber = this.reader.readInt(2);
        this.diskWithCentralDirStart = this.reader.readInt(2);
        this.centralDirRecordsOnThisDisk = this.reader.readInt(2);
        this.centralDirRecords = this.reader.readInt(2);
        this.centralDirSize = this.reader.readInt(4);
        this.centralDirOffset = this.reader.readInt(4);

        this.zipCommentLength = this.reader.readInt(2);
        // warning : the encoding depends of the system locale
        // On a linux machine with LANG=en_US.utf8, this field is utf8 encoded.
        // On a windows machine, this field is encoded with the localized windows code page.
        var zipComment = this.reader.readData(this.zipCommentLength);
        var decodeParamType = support.uint8array ? "uint8array" : "array";
        // To get consistent behavior with the generation part, we will assume that
        // this is utf8 encoded unless specified otherwise.
        var decodeContent = utils.transformTo(decodeParamType, zipComment);
        this.zipComment = this.loadOptions.decodeFileName(decodeContent);
    },
    /**
     * Read the end of the Zip 64 central directory.
     * Not merged with the method readEndOfCentral :
     * The end of central can coexist with its Zip64 brother,
     * I don't want to read the wrong number of bytes !
     */
    readBlockZip64EndOfCentral: function() {
        this.zip64EndOfCentralSize = this.reader.readInt(8);
        this.reader.skip(4);
        // this.versionMadeBy = this.reader.readString(2);
        // this.versionNeeded = this.reader.readInt(2);
        this.diskNumber = this.reader.readInt(4);
        this.diskWithCentralDirStart = this.reader.readInt(4);
        this.centralDirRecordsOnThisDisk = this.reader.readInt(8);
        this.centralDirRecords = this.reader.readInt(8);
        this.centralDirSize = this.reader.readInt(8);
        this.centralDirOffset = this.reader.readInt(8);

        this.zip64ExtensibleData = {};
        var extraDataSize = this.zip64EndOfCentralSize - 44,
            index = 0,
            extraFieldId,
            extraFieldLength,
            extraFieldValue;
        while (index < extraDataSize) {
            extraFieldId = this.reader.readInt(2);
            extraFieldLength = this.reader.readInt(4);
            extraFieldValue = this.reader.readData(extraFieldLength);
            this.zip64ExtensibleData[extraFieldId] = {
                id: extraFieldId,
                length: extraFieldLength,
                value: extraFieldValue
            };
        }
    },
    /**
     * Read the end of the Zip 64 central directory locator.
     */
    readBlockZip64EndOfCentralLocator: function() {
        this.diskWithZip64CentralDirStart = this.reader.readInt(4);
        this.relativeOffsetEndOfZip64CentralDir = this.reader.readInt(8);
        this.disksCount = this.reader.readInt(4);
        if (this.disksCount > 1) {
            throw new Error("Multi-volumes zip are not supported");
        }
    },
    /**
     * Read the local files, based on the offset read in the central part.
     */
    readLocalFiles: function() {
        var i, file;
        for (i = 0; i < this.files.length; i++) {
            file = this.files[i];
            this.reader.setIndex(file.localHeaderOffset);
            this.checkSignature(sig.LOCAL_FILE_HEADER);
            file.readLocalPart(this.reader);
            file.handleUTF8();
            file.processAttributes();
        }
    },
    /**
     * Read the central directory.
     */
    readCentralDir: function() {
        var file;

        this.reader.setIndex(this.centralDirOffset);
        while (this.reader.readAndCheckSignature(sig.CENTRAL_FILE_HEADER)) {
            file = new ZipEntry({
                zip64: this.zip64
            }, this.loadOptions);
            file.readCentralPart(this.reader);
            this.files.push(file);
        }

        if (this.centralDirRecords !== this.files.length) {
            if (this.centralDirRecords !== 0 && this.files.length === 0) {
                // We expected some records but couldn't find ANY.
                // This is really suspicious, as if something went wrong.
                throw new Error("Corrupted zip or bug: expected " + this.centralDirRecords + " records in central dir, got " + this.files.length);
            } else {
                // We found some records but not all.
                // Something is wrong but we got something for the user: no error here.
                // console.warn("expected", this.centralDirRecords, "records in central dir, got", this.files.length);
            }
        }
    },
    /**
     * Read the end of central directory.
     */
    readEndOfCentral: function() {
        var offset = this.reader.lastIndexOfSignature(sig.CENTRAL_DIRECTORY_END);
        if (offset < 0) {
            // Check if the content is a truncated zip or complete garbage.
            // A "LOCAL_FILE_HEADER" is not required at the beginning (auto
            // extractible zip for example) but it can give a good hint.
            // If an ajax request was used without responseType, we will also
            // get unreadable data.
            var isGarbage = !this.isSignature(0, sig.LOCAL_FILE_HEADER);

            if (isGarbage) {
                throw new Error("Can't find end of central directory : is this a zip file ? " +
                                "If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html");
            } else {
                throw new Error("Corrupted zip: can't find end of central directory");
            }

        }
        this.reader.setIndex(offset);
        var endOfCentralDirOffset = offset;
        this.checkSignature(sig.CENTRAL_DIRECTORY_END);
        this.readBlockEndOfCentral();


        /* extract from the zip spec :
            4)  If one of the fields in the end of central directory
                record is too small to hold required data, the field
                should be set to -1 (0xFFFF or 0xFFFFFFFF) and the
                ZIP64 format record should be created.
            5)  The end of central directory record and the
                Zip64 end of central directory locator record must
                reside on the same disk when splitting or spanning
                an archive.
         */
        if (this.diskNumber === utils.MAX_VALUE_16BITS || this.diskWithCentralDirStart === utils.MAX_VALUE_16BITS || this.centralDirRecordsOnThisDisk === utils.MAX_VALUE_16BITS || this.centralDirRecords === utils.MAX_VALUE_16BITS || this.centralDirSize === utils.MAX_VALUE_32BITS || this.centralDirOffset === utils.MAX_VALUE_32BITS) {
            this.zip64 = true;

            /*
            Warning : the zip64 extension is supported, but ONLY if the 64bits integer read from
            the zip file can fit into a 32bits integer. This cannot be solved : JavaScript represents
            all numbers as 64-bit double precision IEEE 754 floating point numbers.
            So, we have 53bits for integers and bitwise operations treat everything as 32bits.
            see https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Bitwise_Operators
            and http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf section 8.5
            */

            // should look for a zip64 EOCD locator
            offset = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);
            if (offset < 0) {
                throw new Error("Corrupted zip: can't find the ZIP64 end of central directory locator");
            }
            this.reader.setIndex(offset);
            this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);
            this.readBlockZip64EndOfCentralLocator();

            // now the zip64 EOCD record
            if (!this.isSignature(this.relativeOffsetEndOfZip64CentralDir, sig.ZIP64_CENTRAL_DIRECTORY_END)) {
                // console.warn("ZIP64 end of central directory not where expected.");
                this.relativeOffsetEndOfZip64CentralDir = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);
                if (this.relativeOffsetEndOfZip64CentralDir < 0) {
                    throw new Error("Corrupted zip: can't find the ZIP64 end of central directory");
                }
            }
            this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir);
            this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);
            this.readBlockZip64EndOfCentral();
        }

        var expectedEndOfCentralDirOffset = this.centralDirOffset + this.centralDirSize;
        if (this.zip64) {
            expectedEndOfCentralDirOffset += 20; // end of central dir 64 locator
            expectedEndOfCentralDirOffset += 12 /* should not include the leading 12 bytes */ + this.zip64EndOfCentralSize;
        }

        var extraBytes = endOfCentralDirOffset - expectedEndOfCentralDirOffset;

        if (extraBytes > 0) {
            // console.warn(extraBytes, "extra bytes at beginning or within zipfile");
            if (this.isSignature(endOfCentralDirOffset, sig.CENTRAL_FILE_HEADER)) {
                // The offsets seem wrong, but we have something at the specified offset.
                // So… we keep it.
            } else {
                // the offset is wrong, update the "zero" of the reader
                // this happens if data has been prepended (crx files for example)
                this.reader.zero = extraBytes;
            }
        } else if (extraBytes < 0) {
            throw new Error("Corrupted zip: missing " + Math.abs(extraBytes) + " bytes.");
        }
    },
    prepareReader: function(data) {
        this.reader = readerFor(data);
    },
    /**
     * Read a zip file and create ZipEntries.
     * @param {String|ArrayBuffer|Uint8Array|Buffer} data the binary string representing a zip file.
     */
    load: function(data) {
        this.prepareReader(data);
        this.readEndOfCentral();
        this.readCentralDir();
        this.readLocalFiles();
    }
};
// }}} end of ZipEntries
module.exports = ZipEntries;


/***/ }),
/* 391 */
/*!****************************************!*\
  !*** ./node_modules/jszip/lib/load.js ***!
  \****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var utils = __webpack_require__(/*! ./utils */ 60);
var external = __webpack_require__(/*! ./external */ 143);
var utf8 = __webpack_require__(/*! ./utf8 */ 132);
var utils = __webpack_require__(/*! ./utils */ 60);
var ZipEntries = __webpack_require__(/*! ./zipEntries */ 390);
var Crc32Probe = __webpack_require__(/*! ./stream/Crc32Probe */ 220);
var nodejsUtils = __webpack_require__(/*! ./nodejsUtils */ 155);

/**
 * Check the CRC32 of an entry.
 * @param {ZipEntry} zipEntry the zip entry to check.
 * @return {Promise} the result.
 */
function checkEntryCRC32(zipEntry) {
    return new external.Promise(function (resolve, reject) {
        var worker = zipEntry.decompressed.getContentWorker().pipe(new Crc32Probe());
        worker.on("error", function (e) {
            reject(e);
        })
        .on("end", function () {
            if (worker.streamInfo.crc32 !== zipEntry.decompressed.crc32) {
                reject(new Error("Corrupted zip : CRC32 mismatch"));
            } else {
                resolve();
            }
        })
        .resume();
    });
}

module.exports = function(data, options) {
    var zip = this;
    options = utils.extend(options || {}, {
        base64: false,
        checkCRC32: false,
        optimizedBinaryString: false,
        createFolders: false,
        decodeFileName: utf8.utf8decode
    });

    if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {
        return external.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file."));
    }

    return utils.prepareContent("the loaded zip file", data, true, options.optimizedBinaryString, options.base64)
    .then(function(data) {
        var zipEntries = new ZipEntries(options);
        zipEntries.load(data);
        return zipEntries;
    }).then(function checkCRC32(zipEntries) {
        var promises = [external.Promise.resolve(zipEntries)];
        var files = zipEntries.files;
        if (options.checkCRC32) {
            for (var i = 0; i < files.length; i++) {
                promises.push(checkEntryCRC32(files[i]));
            }
        }
        return external.Promise.all(promises);
    }).then(function addFiles(results) {
        var zipEntries = results.shift();
        var files = zipEntries.files;
        for (var i = 0; i < files.length; i++) {
            var input = files[i];
            zip.file(input.fileNameStr, input.decompressed, {
                binary: true,
                optimizedBinaryString: true,
                date: input.date,
                dir: input.dir,
                comment : input.fileCommentStr.length ? input.fileCommentStr : null,
                unixPermissions : input.unixPermissions,
                dosPermissions : input.dosPermissions,
                createFolders: options.createFolders
            });
        }
        if (zipEntries.zipComment.length) {
            zip.comment = zipEntries.zipComment;
        }

        return zip;
    });
};


/***/ }),
/* 392 */
/*!*******************************************************************!*\
  !*** ./node_modules/jszip/lib/nodejs/NodejsStreamInputAdapter.js ***!
  \*******************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ../utils */ 60);
var GenericWorker = __webpack_require__(/*! ../stream/GenericWorker */ 90);

/**
 * A worker that use a nodejs stream as source.
 * @constructor
 * @param {String} filename the name of the file entry for this stream.
 * @param {Readable} stream the nodejs stream.
 */
function NodejsStreamInputAdapter(filename, stream) {
    GenericWorker.call(this, "Nodejs stream input adapter for " + filename);
    this._upstreamEnded = false;
    this._bindStream(stream);
}

utils.inherits(NodejsStreamInputAdapter, GenericWorker);

/**
 * Prepare the stream and bind the callbacks on it.
 * Do this ASAP on node 0.10 ! A lazy binding doesn't always work.
 * @param {Stream} stream the nodejs stream to use.
 */
NodejsStreamInputAdapter.prototype._bindStream = function (stream) {
    var self = this;
    this._stream = stream;
    stream.pause();
    stream
    .on("data", function (chunk) {
        self.push({
            data: chunk,
            meta : {
                percent : 0
            }
        });
    })
    .on("error", function (e) {
        if(self.isPaused) {
            this.generatedError = e;
        } else {
            self.error(e);
        }
    })
    .on("end", function () {
        if(self.isPaused) {
            self._upstreamEnded = true;
        } else {
            self.end();
        }
    });
};
NodejsStreamInputAdapter.prototype.pause = function () {
    if(!GenericWorker.prototype.pause.call(this)) {
        return false;
    }
    this._stream.pause();
    return true;
};
NodejsStreamInputAdapter.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if(this._upstreamEnded) {
        this.end();
    } else {
        this._stream.resume();
    }

    return true;
};

module.exports = NodejsStreamInputAdapter;


/***/ }),
/* 393 */
/*!**********************************************************!*\
  !*** ./node_modules/jszip/lib/generate/ZipFileWorker.js ***!
  \**********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ../utils */ 60);
var GenericWorker = __webpack_require__(/*! ../stream/GenericWorker */ 90);
var utf8 = __webpack_require__(/*! ../utf8 */ 132);
var crc32 = __webpack_require__(/*! ../crc32 */ 184);
var signature = __webpack_require__(/*! ../signature */ 213);

/**
 * Transform an integer into a string in hexadecimal.
 * @private
 * @param {number} dec the number to convert.
 * @param {number} bytes the number of bytes to generate.
 * @returns {string} the result.
 */
var decToHex = function(dec, bytes) {
    var hex = "", i;
    for (i = 0; i < bytes; i++) {
        hex += String.fromCharCode(dec & 0xff);
        dec = dec >>> 8;
    }
    return hex;
};

/**
 * Generate the UNIX part of the external file attributes.
 * @param {Object} unixPermissions the unix permissions or null.
 * @param {Boolean} isDir true if the entry is a directory, false otherwise.
 * @return {Number} a 32 bit integer.
 *
 * adapted from http://unix.stackexchange.com/questions/14705/the-zip-formats-external-file-attribute :
 *
 * TTTTsstrwxrwxrwx0000000000ADVSHR
 * ^^^^____________________________ file type, see zipinfo.c (UNX_*)
 *     ^^^_________________________ setuid, setgid, sticky
 *        ^^^^^^^^^________________ permissions
 *                 ^^^^^^^^^^______ not used ?
 *                           ^^^^^^ DOS attribute bits : Archive, Directory, Volume label, System file, Hidden, Read only
 */
var generateUnixExternalFileAttr = function (unixPermissions, isDir) {

    var result = unixPermissions;
    if (!unixPermissions) {
        // I can't use octal values in strict mode, hence the hexa.
        //  040775 => 0x41fd
        // 0100664 => 0x81b4
        result = isDir ? 0x41fd : 0x81b4;
    }
    return (result & 0xFFFF) << 16;
};

/**
 * Generate the DOS part of the external file attributes.
 * @param {Object} dosPermissions the dos permissions or null.
 * @param {Boolean} isDir true if the entry is a directory, false otherwise.
 * @return {Number} a 32 bit integer.
 *
 * Bit 0     Read-Only
 * Bit 1     Hidden
 * Bit 2     System
 * Bit 3     Volume Label
 * Bit 4     Directory
 * Bit 5     Archive
 */
var generateDosExternalFileAttr = function (dosPermissions, isDir) {

    // the dir flag is already set for compatibility
    return (dosPermissions || 0)  & 0x3F;
};

/**
 * Generate the various parts used in the construction of the final zip file.
 * @param {Object} streamInfo the hash with informations about the compressed file.
 * @param {Boolean} streamedContent is the content streamed ?
 * @param {Boolean} streamingEnded is the stream finished ?
 * @param {number} offset the current offset from the start of the zip file.
 * @param {String} platform let's pretend we are this platform (change platform dependents fields)
 * @param {Function} encodeFileName the function to encode the file name / comment.
 * @return {Object} the zip parts.
 */
var generateZipParts = function(streamInfo, streamedContent, streamingEnded, offset, platform, encodeFileName) {
    var file = streamInfo['file'],
    compression = streamInfo['compression'],
    useCustomEncoding = encodeFileName !== utf8.utf8encode,
    encodedFileName = utils.transformTo("string", encodeFileName(file.name)),
    utfEncodedFileName = utils.transformTo("string", utf8.utf8encode(file.name)),
    comment = file.comment,
    encodedComment = utils.transformTo("string", encodeFileName(comment)),
    utfEncodedComment = utils.transformTo("string", utf8.utf8encode(comment)),
    useUTF8ForFileName = utfEncodedFileName.length !== file.name.length,
    useUTF8ForComment = utfEncodedComment.length !== comment.length,
    dosTime,
    dosDate,
    extraFields = "",
    unicodePathExtraField = "",
    unicodeCommentExtraField = "",
    dir = file.dir,
    date = file.date;


    var dataInfo = {
        crc32 : 0,
        compressedSize : 0,
        uncompressedSize : 0
    };

    // if the content is streamed, the sizes/crc32 are only available AFTER
    // the end of the stream.
    if (!streamedContent || streamingEnded) {
        dataInfo.crc32 = streamInfo['crc32'];
        dataInfo.compressedSize = streamInfo['compressedSize'];
        dataInfo.uncompressedSize = streamInfo['uncompressedSize'];
    }

    var bitflag = 0;
    if (streamedContent) {
        // Bit 3: the sizes/crc32 are set to zero in the local header.
        // The correct values are put in the data descriptor immediately
        // following the compressed data.
        bitflag |= 0x0008;
    }
    if (!useCustomEncoding && (useUTF8ForFileName || useUTF8ForComment)) {
        // Bit 11: Language encoding flag (EFS).
        bitflag |= 0x0800;
    }


    var extFileAttr = 0;
    var versionMadeBy = 0;
    if (dir) {
        // dos or unix, we set the dos dir flag
        extFileAttr |= 0x00010;
    }
    if(platform === "UNIX") {
        versionMadeBy = 0x031E; // UNIX, version 3.0
        extFileAttr |= generateUnixExternalFileAttr(file.unixPermissions, dir);
    } else { // DOS or other, fallback to DOS
        versionMadeBy = 0x0014; // DOS, version 2.0
        extFileAttr |= generateDosExternalFileAttr(file.dosPermissions, dir);
    }

    // date
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html

    dosTime = date.getUTCHours();
    dosTime = dosTime << 6;
    dosTime = dosTime | date.getUTCMinutes();
    dosTime = dosTime << 5;
    dosTime = dosTime | date.getUTCSeconds() / 2;

    dosDate = date.getUTCFullYear() - 1980;
    dosDate = dosDate << 4;
    dosDate = dosDate | (date.getUTCMonth() + 1);
    dosDate = dosDate << 5;
    dosDate = dosDate | date.getUTCDate();

    if (useUTF8ForFileName) {
        // set the unicode path extra field. unzip needs at least one extra
        // field to correctly handle unicode path, so using the path is as good
        // as any other information. This could improve the situation with
        // other archive managers too.
        // This field is usually used without the utf8 flag, with a non
        // unicode path in the header (winrar, winzip). This helps (a bit)
        // with the messy Windows' default compressed folders feature but
        // breaks on p7zip which doesn't seek the unicode path extra field.
        // So for now, UTF-8 everywhere !
        unicodePathExtraField =
            // Version
            decToHex(1, 1) +
            // NameCRC32
            decToHex(crc32(encodedFileName), 4) +
            // UnicodeName
            utfEncodedFileName;

        extraFields +=
            // Info-ZIP Unicode Path Extra Field
            "\x75\x70" +
            // size
            decToHex(unicodePathExtraField.length, 2) +
            // content
            unicodePathExtraField;
    }

    if(useUTF8ForComment) {

        unicodeCommentExtraField =
            // Version
            decToHex(1, 1) +
            // CommentCRC32
            decToHex(crc32(encodedComment), 4) +
            // UnicodeName
            utfEncodedComment;

        extraFields +=
            // Info-ZIP Unicode Path Extra Field
            "\x75\x63" +
            // size
            decToHex(unicodeCommentExtraField.length, 2) +
            // content
            unicodeCommentExtraField;
    }

    var header = "";

    // version needed to extract
    header += "\x0A\x00";
    // general purpose bit flag
    header += decToHex(bitflag, 2);
    // compression method
    header += compression.magic;
    // last mod file time
    header += decToHex(dosTime, 2);
    // last mod file date
    header += decToHex(dosDate, 2);
    // crc-32
    header += decToHex(dataInfo.crc32, 4);
    // compressed size
    header += decToHex(dataInfo.compressedSize, 4);
    // uncompressed size
    header += decToHex(dataInfo.uncompressedSize, 4);
    // file name length
    header += decToHex(encodedFileName.length, 2);
    // extra field length
    header += decToHex(extraFields.length, 2);


    var fileRecord = signature.LOCAL_FILE_HEADER + header + encodedFileName + extraFields;

    var dirRecord = signature.CENTRAL_FILE_HEADER +
        // version made by (00: DOS)
        decToHex(versionMadeBy, 2) +
        // file header (common to file and central directory)
        header +
        // file comment length
        decToHex(encodedComment.length, 2) +
        // disk number start
        "\x00\x00" +
        // internal file attributes TODO
        "\x00\x00" +
        // external file attributes
        decToHex(extFileAttr, 4) +
        // relative offset of local header
        decToHex(offset, 4) +
        // file name
        encodedFileName +
        // extra field
        extraFields +
        // file comment
        encodedComment;

    return {
        fileRecord: fileRecord,
        dirRecord: dirRecord
    };
};

/**
 * Generate the EOCD record.
 * @param {Number} entriesCount the number of entries in the zip file.
 * @param {Number} centralDirLength the length (in bytes) of the central dir.
 * @param {Number} localDirLength the length (in bytes) of the local dir.
 * @param {String} comment the zip file comment as a binary string.
 * @param {Function} encodeFileName the function to encode the comment.
 * @return {String} the EOCD record.
 */
var generateCentralDirectoryEnd = function (entriesCount, centralDirLength, localDirLength, comment, encodeFileName) {
    var dirEnd = "";
    var encodedComment = utils.transformTo("string", encodeFileName(comment));

    // end of central dir signature
    dirEnd = signature.CENTRAL_DIRECTORY_END +
        // number of this disk
        "\x00\x00" +
        // number of the disk with the start of the central directory
        "\x00\x00" +
        // total number of entries in the central directory on this disk
        decToHex(entriesCount, 2) +
        // total number of entries in the central directory
        decToHex(entriesCount, 2) +
        // size of the central directory   4 bytes
        decToHex(centralDirLength, 4) +
        // offset of start of central directory with respect to the starting disk number
        decToHex(localDirLength, 4) +
        // .ZIP file comment length
        decToHex(encodedComment.length, 2) +
        // .ZIP file comment
        encodedComment;

    return dirEnd;
};

/**
 * Generate data descriptors for a file entry.
 * @param {Object} streamInfo the hash generated by a worker, containing informations
 * on the file entry.
 * @return {String} the data descriptors.
 */
var generateDataDescriptors = function (streamInfo) {
    var descriptor = "";
    descriptor = signature.DATA_DESCRIPTOR +
        // crc-32                          4 bytes
        decToHex(streamInfo['crc32'], 4) +
        // compressed size                 4 bytes
        decToHex(streamInfo['compressedSize'], 4) +
        // uncompressed size               4 bytes
        decToHex(streamInfo['uncompressedSize'], 4);

    return descriptor;
};


/**
 * A worker to concatenate other workers to create a zip file.
 * @param {Boolean} streamFiles `true` to stream the content of the files,
 * `false` to accumulate it.
 * @param {String} comment the comment to use.
 * @param {String} platform the platform to use, "UNIX" or "DOS".
 * @param {Function} encodeFileName the function to encode file names and comments.
 */
function ZipFileWorker(streamFiles, comment, platform, encodeFileName) {
    GenericWorker.call(this, "ZipFileWorker");
    // The number of bytes written so far. This doesn't count accumulated chunks.
    this.bytesWritten = 0;
    // The comment of the zip file
    this.zipComment = comment;
    // The platform "generating" the zip file.
    this.zipPlatform = platform;
    // the function to encode file names and comments.
    this.encodeFileName = encodeFileName;
    // Should we stream the content of the files ?
    this.streamFiles = streamFiles;
    // If `streamFiles` is false, we will need to accumulate the content of the
    // files to calculate sizes / crc32 (and write them *before* the content).
    // This boolean indicates if we are accumulating chunks (it will change a lot
    // during the lifetime of this worker).
    this.accumulate = false;
    // The buffer receiving chunks when accumulating content.
    this.contentBuffer = [];
    // The list of generated directory records.
    this.dirRecords = [];
    // The offset (in bytes) from the beginning of the zip file for the current source.
    this.currentSourceOffset = 0;
    // The total number of entries in this zip file.
    this.entriesCount = 0;
    // the name of the file currently being added, null when handling the end of the zip file.
    // Used for the emited metadata.
    this.currentFile = null;



    this._sources = [];
}
utils.inherits(ZipFileWorker, GenericWorker);

/**
 * @see GenericWorker.push
 */
ZipFileWorker.prototype.push = function (chunk) {

    var currentFilePercent = chunk.meta.percent || 0;
    var entriesCount = this.entriesCount;
    var remainingFiles = this._sources.length;

    if(this.accumulate) {
        this.contentBuffer.push(chunk);
    } else {
        this.bytesWritten += chunk.data.length;

        GenericWorker.prototype.push.call(this, {
            data : chunk.data,
            meta : {
                currentFile : this.currentFile,
                percent : entriesCount ? (currentFilePercent + 100 * (entriesCount - remainingFiles - 1)) / entriesCount : 100
            }
        });
    }
};

/**
 * The worker started a new source (an other worker).
 * @param {Object} streamInfo the streamInfo object from the new source.
 */
ZipFileWorker.prototype.openedSource = function (streamInfo) {
    this.currentSourceOffset = this.bytesWritten;
    this.currentFile = streamInfo['file'].name;

    var streamedContent = this.streamFiles && !streamInfo['file'].dir;

    // don't stream folders (because they don't have any content)
    if(streamedContent) {
        var record = generateZipParts(streamInfo, streamedContent, false, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);
        this.push({
            data : record.fileRecord,
            meta : {percent:0}
        });
    } else {
        // we need to wait for the whole file before pushing anything
        this.accumulate = true;
    }
};

/**
 * The worker finished a source (an other worker).
 * @param {Object} streamInfo the streamInfo object from the finished source.
 */
ZipFileWorker.prototype.closedSource = function (streamInfo) {
    this.accumulate = false;
    var streamedContent = this.streamFiles && !streamInfo['file'].dir;
    var record = generateZipParts(streamInfo, streamedContent, true, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);

    this.dirRecords.push(record.dirRecord);
    if(streamedContent) {
        // after the streamed file, we put data descriptors
        this.push({
            data : generateDataDescriptors(streamInfo),
            meta : {percent:100}
        });
    } else {
        // the content wasn't streamed, we need to push everything now
        // first the file record, then the content
        this.push({
            data : record.fileRecord,
            meta : {percent:0}
        });
        while(this.contentBuffer.length) {
            this.push(this.contentBuffer.shift());
        }
    }
    this.currentFile = null;
};

/**
 * @see GenericWorker.flush
 */
ZipFileWorker.prototype.flush = function () {

    var localDirLength = this.bytesWritten;
    for(var i = 0; i < this.dirRecords.length; i++) {
        this.push({
            data : this.dirRecords[i],
            meta : {percent:100}
        });
    }
    var centralDirLength = this.bytesWritten - localDirLength;

    var dirEnd = generateCentralDirectoryEnd(this.dirRecords.length, centralDirLength, localDirLength, this.zipComment, this.encodeFileName);

    this.push({
        data : dirEnd,
        meta : {percent:100}
    });
};

/**
 * Prepare the next source to be read.
 */
ZipFileWorker.prototype.prepareNextSource = function () {
    this.previous = this._sources.shift();
    this.openedSource(this.previous.streamInfo);
    if (this.isPaused) {
        this.previous.pause();
    } else {
        this.previous.resume();
    }
};

/**
 * @see GenericWorker.registerPrevious
 */
ZipFileWorker.prototype.registerPrevious = function (previous) {
    this._sources.push(previous);
    var self = this;

    previous.on('data', function (chunk) {
        self.processChunk(chunk);
    });
    previous.on('end', function () {
        self.closedSource(self.previous.streamInfo);
        if(self._sources.length) {
            self.prepareNextSource();
        } else {
            self.end();
        }
    });
    previous.on('error', function (e) {
        self.error(e);
    });
    return this;
};

/**
 * @see GenericWorker.resume
 */
ZipFileWorker.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if (!this.previous && this._sources.length) {
        this.prepareNextSource();
        return true;
    }
    if (!this.previous && !this._sources.length && !this.generatedError) {
        this.end();
        return true;
    }
};

/**
 * @see GenericWorker.error
 */
ZipFileWorker.prototype.error = function (e) {
    var sources = this._sources;
    if(!GenericWorker.prototype.error.call(this, e)) {
        return false;
    }
    for(var i = 0; i < sources.length; i++) {
        try {
            sources[i].error(e);
        } catch(e) {
            // the `error` exploded, nothing to do
        }
    }
    return true;
};

/**
 * @see GenericWorker.lock
 */
ZipFileWorker.prototype.lock = function () {
    GenericWorker.prototype.lock.call(this);
    var sources = this._sources;
    for(var i = 0; i < sources.length; i++) {
        sources[i].lock();
    }
};

module.exports = ZipFileWorker;


/***/ }),
/* 394 */
/*!************************************************!*\
  !*** ./node_modules/pako/lib/zlib/gzheader.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

function GZheader() {
  /* true if compressed data believed to be text */
  this.text       = 0;
  /* modification time */
  this.time       = 0;
  /* extra flags (not used when writing a gzip file) */
  this.xflags     = 0;
  /* operating system */
  this.os         = 0;
  /* pointer to extra field or Z_NULL if none */
  this.extra      = null;
  /* extra field length (valid if extra != Z_NULL) */
  this.extra_len  = 0; // Actually, we don't need it in JS,
                       // but leave for few code modifications

  //
  // Setup limits is not necessary because in js we should not preallocate memory
  // for inflate use constant limit in 65536 bytes
  //

  /* space at extra (only when reading header) */
  // this.extra_max  = 0;
  /* pointer to zero-terminated file name or Z_NULL */
  this.name       = '';
  /* space at name (only when reading header) */
  // this.name_max   = 0;
  /* pointer to zero-terminated comment or Z_NULL */
  this.comment    = '';
  /* space at comment (only when reading header) */
  // this.comm_max   = 0;
  /* true if there was or will be a header crc */
  this.hcrc       = 0;
  /* true when done reading gzip header (not used when writing a gzip file) */
  this.done       = false;
}

module.exports = GZheader;


/***/ }),
/* 395 */
/*!************************************************!*\
  !*** ./node_modules/pako/lib/zlib/inftrees.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils = __webpack_require__(/*! ../utils/common */ 112);

var MAXBITS = 15;
var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);

var CODES = 0;
var LENS = 1;
var DISTS = 2;

var lbase = [ /* Length codes 257..285 base */
  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
];

var lext = [ /* Length codes 257..285 extra */
  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
];

var dbase = [ /* Distance codes 0..29 base */
  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
  8193, 12289, 16385, 24577, 0, 0
];

var dext = [ /* Distance codes 0..29 extra */
  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
  28, 28, 29, 29, 64, 64
];

module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
{
  var bits = opts.bits;
      //here = opts.here; /* table entry for duplication */

  var len = 0;               /* a code's length in bits */
  var sym = 0;               /* index of code symbols */
  var min = 0, max = 0;          /* minimum and maximum code lengths */
  var root = 0;              /* number of index bits for root table */
  var curr = 0;              /* number of index bits for current table */
  var drop = 0;              /* code bits to drop for sub-table */
  var left = 0;                   /* number of prefix codes available */
  var used = 0;              /* code entries in table used */
  var huff = 0;              /* Huffman code */
  var incr;              /* for incrementing code, index */
  var fill;              /* index for replicating entries */
  var low;               /* low bits for current root entry */
  var mask;              /* mask for low root bits */
  var next;             /* next available space in table */
  var base = null;     /* base value table to use */
  var base_index = 0;
//  var shoextra;    /* extra bits table to use */
  var end;                    /* use base and extra for symbol > end */
  var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */
  var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */
  var extra = null;
  var extra_index = 0;

  var here_bits, here_op, here_val;

  /*
   Process a set of code lengths to create a canonical Huffman code.  The
   code lengths are lens[0..codes-1].  Each length corresponds to the
   symbols 0..codes-1.  The Huffman code is generated by first sorting the
   symbols by length from short to long, and retaining the symbol order
   for codes with equal lengths.  Then the code starts with all zero bits
   for the first code of the shortest length, and the codes are integer
   increments for the same length, and zeros are appended as the length
   increases.  For the deflate format, these bits are stored backwards
   from their more natural integer increment ordering, and so when the
   decoding tables are built in the large loop below, the integer codes
   are incremented backwards.

   This routine assumes, but does not check, that all of the entries in
   lens[] are in the range 0..MAXBITS.  The caller must assure this.
   1..MAXBITS is interpreted as that code length.  zero means that that
   symbol does not occur in this code.

   The codes are sorted by computing a count of codes for each length,
   creating from that a table of starting indices for each length in the
   sorted table, and then entering the symbols in order in the sorted
   table.  The sorted table is work[], with that space being provided by
   the caller.

   The length counts are used for other purposes as well, i.e. finding
   the minimum and maximum length codes, determining if there are any
   codes at all, checking for a valid set of lengths, and looking ahead
   at length counts to determine sub-table sizes when building the
   decoding tables.
   */

  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
  for (len = 0; len <= MAXBITS; len++) {
    count[len] = 0;
  }
  for (sym = 0; sym < codes; sym++) {
    count[lens[lens_index + sym]]++;
  }

  /* bound code lengths, force root to be within code lengths */
  root = bits;
  for (max = MAXBITS; max >= 1; max--) {
    if (count[max] !== 0) { break; }
  }
  if (root > max) {
    root = max;
  }
  if (max === 0) {                     /* no symbols to code at all */
    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;


    //table.op[opts.table_index] = 64;
    //table.bits[opts.table_index] = 1;
    //table.val[opts.table_index++] = 0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;

    opts.bits = 1;
    return 0;     /* no symbols, but wait for decoding to report error */
  }
  for (min = 1; min < max; min++) {
    if (count[min] !== 0) { break; }
  }
  if (root < min) {
    root = min;
  }

  /* check for an over-subscribed or incomplete set of lengths */
  left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= count[len];
    if (left < 0) {
      return -1;
    }        /* over-subscribed */
  }
  if (left > 0 && (type === CODES || max !== 1)) {
    return -1;                      /* incomplete set */
  }

  /* generate offsets into symbol table for each length for sorting */
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++) {
    offs[len + 1] = offs[len] + count[len];
  }

  /* sort symbols by length, by symbol order within each length */
  for (sym = 0; sym < codes; sym++) {
    if (lens[lens_index + sym] !== 0) {
      work[offs[lens[lens_index + sym]]++] = sym;
    }
  }

  /*
   Create and fill in decoding tables.  In this loop, the table being
   filled is at next and has curr index bits.  The code being used is huff
   with length len.  That code is converted to an index by dropping drop
   bits off of the bottom.  For codes where len is less than drop + curr,
   those top drop + curr - len bits are incremented through all values to
   fill the table with replicated entries.

   root is the number of index bits for the root table.  When len exceeds
   root, sub-tables are created pointed to by the root entry with an index
   of the low root bits of huff.  This is saved in low to check for when a
   new sub-table should be started.  drop is zero when the root table is
   being filled, and drop is root when sub-tables are being filled.

   When a new sub-table is needed, it is necessary to look ahead in the
   code lengths to determine what size sub-table is needed.  The length
   counts are used for this, and so count[] is decremented as codes are
   entered in the tables.

   used keeps track of how many table entries have been allocated from the
   provided *table space.  It is checked for LENS and DIST tables against
   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
   the initial root table size constants.  See the comments in inftrees.h
   for more information.

   sym increments through all symbols, and the loop terminates when
   all codes of length max, i.e. all codes, have been processed.  This
   routine permits incomplete codes, so another loop after this one fills
   in the rest of the decoding tables with invalid code markers.
   */

  /* set up for code type */
  // poor man optimization - use if-else instead of switch,
  // to avoid deopts in old v8
  if (type === CODES) {
    base = extra = work;    /* dummy value--not used */
    end = 19;

  } else if (type === LENS) {
    base = lbase;
    base_index -= 257;
    extra = lext;
    extra_index -= 257;
    end = 256;

  } else {                    /* DISTS */
    base = dbase;
    extra = dext;
    end = -1;
  }

  /* initialize opts for loop */
  huff = 0;                   /* starting code */
  sym = 0;                    /* starting code symbol */
  len = min;                  /* starting code length */
  next = table_index;              /* current table to fill in */
  curr = root;                /* current table index bits */
  drop = 0;                   /* current bits to drop from code for index */
  low = -1;                   /* trigger new sub-table when len > root */
  used = 1 << root;          /* use root table entries */
  mask = used - 1;            /* mask for comparing low */

  /* check available table space */
  if ((type === LENS && used > ENOUGH_LENS) ||
    (type === DISTS && used > ENOUGH_DISTS)) {
    return 1;
  }

  /* process all codes and make table entries */
  for (;;) {
    /* create table entry */
    here_bits = len - drop;
    if (work[sym] < end) {
      here_op = 0;
      here_val = work[sym];
    }
    else if (work[sym] > end) {
      here_op = extra[extra_index + work[sym]];
      here_val = base[base_index + work[sym]];
    }
    else {
      here_op = 32 + 64;         /* end of block */
      here_val = 0;
    }

    /* replicate for those indices with low len bits equal to huff */
    incr = 1 << (len - drop);
    fill = 1 << curr;
    min = fill;                 /* save offset to next table */
    do {
      fill -= incr;
      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
    } while (fill !== 0);

    /* backwards increment the len-bit code huff */
    incr = 1 << (len - 1);
    while (huff & incr) {
      incr >>= 1;
    }
    if (incr !== 0) {
      huff &= incr - 1;
      huff += incr;
    } else {
      huff = 0;
    }

    /* go to next symbol, update count, len */
    sym++;
    if (--count[len] === 0) {
      if (len === max) { break; }
      len = lens[lens_index + work[sym]];
    }

    /* create new sub-table if needed */
    if (len > root && (huff & mask) !== low) {
      /* if first time, transition to sub-tables */
      if (drop === 0) {
        drop = root;
      }

      /* increment past last table */
      next += min;            /* here min is 1 << curr */

      /* determine length of next table */
      curr = len - drop;
      left = 1 << curr;
      while (curr + drop < max) {
        left -= count[curr + drop];
        if (left <= 0) { break; }
        curr++;
        left <<= 1;
      }

      /* check for enough space */
      used += 1 << curr;
      if ((type === LENS && used > ENOUGH_LENS) ||
        (type === DISTS && used > ENOUGH_DISTS)) {
        return 1;
      }

      /* point entry in root table to sub-table */
      low = huff & mask;
      /*table.op[low] = curr;
      table.bits[low] = root;
      table.val[low] = next - opts.table_index;*/
      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
    }
  }

  /* fill in remaining table entry if code is incomplete (guaranteed to have
   at most one remaining entry, since if the code is incomplete, the
   maximum code length that was allowed to get this far is one bit) */
  if (huff !== 0) {
    //table.op[next + huff] = 64;            /* invalid code marker */
    //table.bits[next + huff] = len - drop;
    //table.val[next + huff] = 0;
    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
  }

  /* set return parameters */
  //opts.table_index += used;
  opts.bits = root;
  return 0;
};


/***/ }),
/* 396 */
/*!***********************************************!*\
  !*** ./node_modules/pako/lib/zlib/inffast.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

// See state defs from inflate.js
var BAD = 30;       /* got a data error -- remain here until reset */
var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */

/*
   Decode literal, length, and distance codes and write out the resulting
   literal and match bytes until either not enough input or output is
   available, an end-of-block is encountered, or a data error is encountered.
   When large enough input and output buffers are supplied to inflate(), for
   example, a 16K input buffer and a 64K output buffer, more than 95% of the
   inflate execution time is spent in this routine.

   Entry assumptions:

        state.mode === LEN
        strm.avail_in >= 6
        strm.avail_out >= 258
        start >= strm.avail_out
        state.bits < 8

   On return, state.mode is one of:

        LEN -- ran out of enough output space or enough available input
        TYPE -- reached end of block code, inflate() to interpret next block
        BAD -- error in block data

   Notes:

    - The maximum input bits used by a length/distance pair is 15 bits for the
      length code, 5 bits for the length extra, 15 bits for the distance code,
      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
      Therefore if strm.avail_in >= 6, then there is enough input to avoid
      checking for available input while decoding.

    - The maximum bytes that a single length/distance pair can output is 258
      bytes, which is the maximum length that can be coded.  inflate_fast()
      requires strm.avail_out >= 258 for each loop to avoid checking for
      output space.
 */
module.exports = function inflate_fast(strm, start) {
  var state;
  var _in;                    /* local strm.input */
  var last;                   /* have enough input while in < last */
  var _out;                   /* local strm.output */
  var beg;                    /* inflate()'s initial strm.output */
  var end;                    /* while out < end, enough space available */
//#ifdef INFLATE_STRICT
  var dmax;                   /* maximum distance from zlib header */
//#endif
  var wsize;                  /* window size or zero if not using window */
  var whave;                  /* valid bytes in the window */
  var wnext;                  /* window write index */
  // Use `s_window` instead `window`, avoid conflict with instrumentation tools
  var s_window;               /* allocated sliding window, if wsize != 0 */
  var hold;                   /* local strm.hold */
  var bits;                   /* local strm.bits */
  var lcode;                  /* local strm.lencode */
  var dcode;                  /* local strm.distcode */
  var lmask;                  /* mask for first level of length codes */
  var dmask;                  /* mask for first level of distance codes */
  var here;                   /* retrieved table entry */
  var op;                     /* code bits, operation, extra bits, or */
                              /*  window position, window bytes to copy */
  var len;                    /* match length, unused bytes */
  var dist;                   /* match distance */
  var from;                   /* where to copy match from */
  var from_source;


  var input, output; // JS specific, because we have no pointers

  /* copy state to local variables */
  state = strm.state;
  //here = state.here;
  _in = strm.next_in;
  input = strm.input;
  last = _in + (strm.avail_in - 5);
  _out = strm.next_out;
  output = strm.output;
  beg = _out - (start - strm.avail_out);
  end = _out + (strm.avail_out - 257);
//#ifdef INFLATE_STRICT
  dmax = state.dmax;
//#endif
  wsize = state.wsize;
  whave = state.whave;
  wnext = state.wnext;
  s_window = state.window;
  hold = state.hold;
  bits = state.bits;
  lcode = state.lencode;
  dcode = state.distcode;
  lmask = (1 << state.lenbits) - 1;
  dmask = (1 << state.distbits) - 1;


  /* decode literals and length/distances until end-of-block or not enough
     input data or output space */

  top:
  do {
    if (bits < 15) {
      hold += input[_in++] << bits;
      bits += 8;
      hold += input[_in++] << bits;
      bits += 8;
    }

    here = lcode[hold & lmask];

    dolen:
    for (;;) { // Goto emulation
      op = here >>> 24/*here.bits*/;
      hold >>>= op;
      bits -= op;
      op = (here >>> 16) & 0xff/*here.op*/;
      if (op === 0) {                          /* literal */
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        output[_out++] = here & 0xffff/*here.val*/;
      }
      else if (op & 16) {                     /* length base */
        len = here & 0xffff/*here.val*/;
        op &= 15;                           /* number of extra bits */
        if (op) {
          if (bits < op) {
            hold += input[_in++] << bits;
            bits += 8;
          }
          len += hold & ((1 << op) - 1);
          hold >>>= op;
          bits -= op;
        }
        //Tracevv((stderr, "inflate:         length %u\n", len));
        if (bits < 15) {
          hold += input[_in++] << bits;
          bits += 8;
          hold += input[_in++] << bits;
          bits += 8;
        }
        here = dcode[hold & dmask];

        dodist:
        for (;;) { // goto emulation
          op = here >>> 24/*here.bits*/;
          hold >>>= op;
          bits -= op;
          op = (here >>> 16) & 0xff/*here.op*/;

          if (op & 16) {                      /* distance base */
            dist = here & 0xffff/*here.val*/;
            op &= 15;                       /* number of extra bits */
            if (bits < op) {
              hold += input[_in++] << bits;
              bits += 8;
              if (bits < op) {
                hold += input[_in++] << bits;
                bits += 8;
              }
            }
            dist += hold & ((1 << op) - 1);
//#ifdef INFLATE_STRICT
            if (dist > dmax) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break top;
            }
//#endif
            hold >>>= op;
            bits -= op;
            //Tracevv((stderr, "inflate:         distance %u\n", dist));
            op = _out - beg;                /* max distance in output */
            if (dist > op) {                /* see if copy from window */
              op = dist - op;               /* distance back in window */
              if (op > whave) {
                if (state.sane) {
                  strm.msg = 'invalid distance too far back';
                  state.mode = BAD;
                  break top;
                }

// (!) This block is disabled in zlib defaults,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//                if (len <= op - whave) {
//                  do {
//                    output[_out++] = 0;
//                  } while (--len);
//                  continue top;
//                }
//                len -= op - whave;
//                do {
//                  output[_out++] = 0;
//                } while (--op > whave);
//                if (op === 0) {
//                  from = _out - dist;
//                  do {
//                    output[_out++] = output[from++];
//                  } while (--len);
//                  continue top;
//                }
//#endif
              }
              from = 0; // window index
              from_source = s_window;
              if (wnext === 0) {           /* very common case */
                from += wsize - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              else if (wnext < op) {      /* wrap around window */
                from += wsize + wnext - op;
                op -= wnext;
                if (op < len) {         /* some from end of window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = 0;
                  if (wnext < len) {  /* some from start of window */
                    op = wnext;
                    len -= op;
                    do {
                      output[_out++] = s_window[from++];
                    } while (--op);
                    from = _out - dist;      /* rest from output */
                    from_source = output;
                  }
                }
              }
              else {                      /* contiguous in window */
                from += wnext - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              while (len > 2) {
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                len -= 3;
              }
              if (len) {
                output[_out++] = from_source[from++];
                if (len > 1) {
                  output[_out++] = from_source[from++];
                }
              }
            }
            else {
              from = _out - dist;          /* copy direct from output */
              do {                        /* minimum length is three */
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                len -= 3;
              } while (len > 2);
              if (len) {
                output[_out++] = output[from++];
                if (len > 1) {
                  output[_out++] = output[from++];
                }
              }
            }
          }
          else if ((op & 64) === 0) {          /* 2nd level distance code */
            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
            continue dodist;
          }
          else {
            strm.msg = 'invalid distance code';
            state.mode = BAD;
            break top;
          }

          break; // need to emulate goto via "continue"
        }
      }
      else if ((op & 64) === 0) {              /* 2nd level length code */
        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
        continue dolen;
      }
      else if (op & 32) {                     /* end-of-block */
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.mode = TYPE;
        break top;
      }
      else {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break top;
      }

      break; // need to emulate goto via "continue"
    }
  } while (_in < last && _out < end);

  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
  len = bits >> 3;
  _in -= len;
  bits -= len << 3;
  hold &= (1 << bits) - 1;

  /* update state and return */
  strm.next_in = _in;
  strm.next_out = _out;
  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
  state.hold = hold;
  state.bits = bits;
  return;
};


/***/ }),
/* 397 */
/*!***********************************************!*\
  !*** ./node_modules/pako/lib/zlib/inflate.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils         = __webpack_require__(/*! ../utils/common */ 112);
var adler32       = __webpack_require__(/*! ./adler32 */ 218);
var crc32         = __webpack_require__(/*! ./crc32 */ 217);
var inflate_fast  = __webpack_require__(/*! ./inffast */ 396);
var inflate_table = __webpack_require__(/*! ./inftrees */ 395);

var CODES = 0;
var LENS = 1;
var DISTS = 2;

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
//var Z_NO_FLUSH      = 0;
//var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
//var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;

/* The deflate compression method */
var Z_DEFLATED  = 8;


/* STATES ====================================================================*/
/* ===========================================================================*/


var    HEAD = 1;       /* i: waiting for magic header */
var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
var    TIME = 3;       /* i: waiting for modification time (gzip) */
var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
var    NAME = 7;       /* i: waiting for end of file name (gzip) */
var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
var    HCRC = 9;       /* i: waiting for header crc (gzip) */
var    DICTID = 10;    /* i: waiting for dictionary check value */
var    DICT = 11;      /* waiting for inflateSetDictionary() call */
var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
var        STORED = 14;    /* i: waiting for stored size (length and complement) */
var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
var        LENLENS = 18;   /* i: waiting for code length code lengths */
var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
var            LEN = 21;       /* i: waiting for length/lit/eob code */
var            LENEXT = 22;    /* i: waiting for length extra bits */
var            DIST = 23;      /* i: waiting for distance code */
var            DISTEXT = 24;   /* i: waiting for distance extra bits */
var            MATCH = 25;     /* o: waiting for output space to copy string */
var            LIT = 26;       /* o: waiting for output space to write literal */
var    CHECK = 27;     /* i: waiting for 32-bit check value */
var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
var    DONE = 29;      /* finished check, done -- remain here until reset */
var    BAD = 30;       /* got a data error -- remain here until reset */
var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */

/* ===========================================================================*/



var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);

var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_WBITS = MAX_WBITS;


function zswap32(q) {
  return  (((q >>> 24) & 0xff) +
          ((q >>> 8) & 0xff00) +
          ((q & 0xff00) << 8) +
          ((q & 0xff) << 24));
}


function InflateState() {
  this.mode = 0;             /* current inflate mode */
  this.last = false;          /* true if processing last block */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.havedict = false;      /* true if dictionary provided */
  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
  this.check = 0;             /* protected copy of check value */
  this.total = 0;             /* protected copy of output count */
  // TODO: may be {}
  this.head = null;           /* where to save gzip header information */

  /* sliding window */
  this.wbits = 0;             /* log base 2 of requested window size */
  this.wsize = 0;             /* window size or zero if not using window */
  this.whave = 0;             /* valid bytes in the window */
  this.wnext = 0;             /* window write index */
  this.window = null;         /* allocated sliding window, if needed */

  /* bit accumulator */
  this.hold = 0;              /* input bit accumulator */
  this.bits = 0;              /* number of bits in "in" */

  /* for string and stored block copying */
  this.length = 0;            /* literal or length of data to copy */
  this.offset = 0;            /* distance back to copy string from */

  /* for table and code decoding */
  this.extra = 0;             /* extra bits needed */

  /* fixed and dynamic code tables */
  this.lencode = null;          /* starting table for length/literal codes */
  this.distcode = null;         /* starting table for distance codes */
  this.lenbits = 0;           /* index bits for lencode */
  this.distbits = 0;          /* index bits for distcode */

  /* dynamic table building */
  this.ncode = 0;             /* number of code length code lengths */
  this.nlen = 0;              /* number of length code lengths */
  this.ndist = 0;             /* number of distance code lengths */
  this.have = 0;              /* number of code lengths in lens[] */
  this.next = null;              /* next available space in codes[] */

  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
  this.work = new utils.Buf16(288); /* work area for code table building */

  /*
   because we don't have pointers in js, we use lencode and distcode directly
   as buffers so we don't need codes
  */
  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
  this.sane = 0;                   /* if false, allow invalid distance too far */
  this.back = 0;                   /* bits back of last unprocessed length/lit */
  this.was = 0;                    /* initial length of match */
}

function inflateResetKeep(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  strm.total_in = strm.total_out = state.total = 0;
  strm.msg = ''; /*Z_NULL*/
  if (state.wrap) {       /* to support ill-conceived Java test suite */
    strm.adler = state.wrap & 1;
  }
  state.mode = HEAD;
  state.last = 0;
  state.havedict = 0;
  state.dmax = 32768;
  state.head = null/*Z_NULL*/;
  state.hold = 0;
  state.bits = 0;
  //state.lencode = state.distcode = state.next = state.codes;
  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);

  state.sane = 1;
  state.back = -1;
  //Tracev((stderr, "inflate: reset\n"));
  return Z_OK;
}

function inflateReset(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  state.wsize = 0;
  state.whave = 0;
  state.wnext = 0;
  return inflateResetKeep(strm);

}

function inflateReset2(strm, windowBits) {
  var wrap;
  var state;

  /* get the state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;

  /* extract wrap request from windowBits parameter */
  if (windowBits < 0) {
    wrap = 0;
    windowBits = -windowBits;
  }
  else {
    wrap = (windowBits >> 4) + 1;
    if (windowBits < 48) {
      windowBits &= 15;
    }
  }

  /* set number of window bits, free window if different */
  if (windowBits && (windowBits < 8 || windowBits > 15)) {
    return Z_STREAM_ERROR;
  }
  if (state.window !== null && state.wbits !== windowBits) {
    state.window = null;
  }

  /* update state and reset the rest of it */
  state.wrap = wrap;
  state.wbits = windowBits;
  return inflateReset(strm);
}

function inflateInit2(strm, windowBits) {
  var ret;
  var state;

  if (!strm) { return Z_STREAM_ERROR; }
  //strm.msg = Z_NULL;                 /* in case we return an error */

  state = new InflateState();

  //if (state === Z_NULL) return Z_MEM_ERROR;
  //Tracev((stderr, "inflate: allocated\n"));
  strm.state = state;
  state.window = null/*Z_NULL*/;
  ret = inflateReset2(strm, windowBits);
  if (ret !== Z_OK) {
    strm.state = null/*Z_NULL*/;
  }
  return ret;
}

function inflateInit(strm) {
  return inflateInit2(strm, DEF_WBITS);
}


/*
 Return state with length and distance decoding tables and index sizes set to
 fixed code decoding.  Normally this returns fixed tables from inffixed.h.
 If BUILDFIXED is defined, then instead this routine builds the tables the
 first time it's called, and returns those tables the first time and
 thereafter.  This reduces the size of the code by about 2K bytes, in
 exchange for a little execution time.  However, BUILDFIXED should not be
 used for threaded applications, since the rewriting of the tables and virgin
 may not be thread-safe.
 */
var virgin = true;

var lenfix, distfix; // We have no pointers in JS, so keep tables separate

function fixedtables(state) {
  /* build fixed huffman tables if first call (may not be thread safe) */
  if (virgin) {
    var sym;

    lenfix = new utils.Buf32(512);
    distfix = new utils.Buf32(32);

    /* literal/length table */
    sym = 0;
    while (sym < 144) { state.lens[sym++] = 8; }
    while (sym < 256) { state.lens[sym++] = 9; }
    while (sym < 280) { state.lens[sym++] = 7; }
    while (sym < 288) { state.lens[sym++] = 8; }

    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });

    /* distance table */
    sym = 0;
    while (sym < 32) { state.lens[sym++] = 5; }

    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });

    /* do this just once */
    virgin = false;
  }

  state.lencode = lenfix;
  state.lenbits = 9;
  state.distcode = distfix;
  state.distbits = 5;
}


/*
 Update the window with the last wsize (normally 32K) bytes written before
 returning.  If window does not exist yet, create it.  This is only called
 when a window is already in use, or when output has been written during this
 inflate call, but the end of the deflate stream has not been reached yet.
 It is also called to create a window for dictionary data when a dictionary
 is loaded.

 Providing output buffers larger than 32K to inflate() should provide a speed
 advantage, since only the last 32K of output is copied to the sliding window
 upon return from inflate(), and since all distances after the first 32K of
 output will fall in the output data, making match copies simpler and faster.
 The advantage may be dependent on the size of the processor's data caches.
 */
function updatewindow(strm, src, end, copy) {
  var dist;
  var state = strm.state;

  /* if it hasn't been done already, allocate space for the window */
  if (state.window === null) {
    state.wsize = 1 << state.wbits;
    state.wnext = 0;
    state.whave = 0;

    state.window = new utils.Buf8(state.wsize);
  }

  /* copy state->wsize or less output bytes into the circular window */
  if (copy >= state.wsize) {
    utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);
    state.wnext = 0;
    state.whave = state.wsize;
  }
  else {
    dist = state.wsize - state.wnext;
    if (dist > copy) {
      dist = copy;
    }
    //zmemcpy(state->window + state->wnext, end - copy, dist);
    utils.arraySet(state.window, src, end - copy, dist, state.wnext);
    copy -= dist;
    if (copy) {
      //zmemcpy(state->window, end - copy, copy);
      utils.arraySet(state.window, src, end - copy, copy, 0);
      state.wnext = copy;
      state.whave = state.wsize;
    }
    else {
      state.wnext += dist;
      if (state.wnext === state.wsize) { state.wnext = 0; }
      if (state.whave < state.wsize) { state.whave += dist; }
    }
  }
  return 0;
}

function inflate(strm, flush) {
  var state;
  var input, output;          // input/output buffers
  var next;                   /* next input INDEX */
  var put;                    /* next output INDEX */
  var have, left;             /* available input and output */
  var hold;                   /* bit buffer */
  var bits;                   /* bits in bit buffer */
  var _in, _out;              /* save starting available input and output */
  var copy;                   /* number of stored or match bytes to copy */
  var from;                   /* where to copy match bytes from */
  var from_source;
  var here = 0;               /* current decoding table entry */
  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
  //var last;                   /* parent table entry */
  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
  var len;                    /* length to copy for repeats, bits to drop */
  var ret;                    /* return code */
  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
  var opts;

  var n; // temporary var for NEED_BITS

  var order = /* permutation of code lengths */
    [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];


  if (!strm || !strm.state || !strm.output ||
      (!strm.input && strm.avail_in !== 0)) {
    return Z_STREAM_ERROR;
  }

  state = strm.state;
  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */


  //--- LOAD() ---
  put = strm.next_out;
  output = strm.output;
  left = strm.avail_out;
  next = strm.next_in;
  input = strm.input;
  have = strm.avail_in;
  hold = state.hold;
  bits = state.bits;
  //---

  _in = have;
  _out = left;
  ret = Z_OK;

  inf_leave: // goto emulation
  for (;;) {
    switch (state.mode) {
      case HEAD:
        if (state.wrap === 0) {
          state.mode = TYPEDO;
          break;
        }
        //=== NEEDBITS(16);
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
          state.check = 0/*crc32(0L, Z_NULL, 0)*/;
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//

          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
          state.mode = FLAGS;
          break;
        }
        state.flags = 0;           /* expect zlib header */
        if (state.head) {
          state.head.done = false;
        }
        if (!(state.wrap & 1) ||   /* check if zlib header allowed */
          (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
          strm.msg = 'incorrect header check';
          state.mode = BAD;
          break;
        }
        if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
          strm.msg = 'unknown compression method';
          state.mode = BAD;
          break;
        }
        //--- DROPBITS(4) ---//
        hold >>>= 4;
        bits -= 4;
        //---//
        len = (hold & 0x0f)/*BITS(4)*/ + 8;
        if (state.wbits === 0) {
          state.wbits = len;
        }
        else if (len > state.wbits) {
          strm.msg = 'invalid window size';
          state.mode = BAD;
          break;
        }
        state.dmax = 1 << len;
        //Tracev((stderr, "inflate:   zlib header ok\n"));
        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
        state.mode = hold & 0x200 ? DICTID : TYPE;
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        break;
      case FLAGS:
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.flags = hold;
        if ((state.flags & 0xff) !== Z_DEFLATED) {
          strm.msg = 'unknown compression method';
          state.mode = BAD;
          break;
        }
        if (state.flags & 0xe000) {
          strm.msg = 'unknown header flags set';
          state.mode = BAD;
          break;
        }
        if (state.head) {
          state.head.text = ((hold >> 8) & 1);
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = TIME;
        /* falls through */
      case TIME:
        //=== NEEDBITS(32); */
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (state.head) {
          state.head.time = hold;
        }
        if (state.flags & 0x0200) {
          //=== CRC4(state.check, hold)
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          hbuf[2] = (hold >>> 16) & 0xff;
          hbuf[3] = (hold >>> 24) & 0xff;
          state.check = crc32(state.check, hbuf, 4, 0);
          //===
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = OS;
        /* falls through */
      case OS:
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (state.head) {
          state.head.xflags = (hold & 0xff);
          state.head.os = (hold >> 8);
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = EXLEN;
        /* falls through */
      case EXLEN:
        if (state.flags & 0x0400) {
          //=== NEEDBITS(16); */
          while (bits < 16) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.length = hold;
          if (state.head) {
            state.head.extra_len = hold;
          }
          if (state.flags & 0x0200) {
            //=== CRC2(state.check, hold);
            hbuf[0] = hold & 0xff;
            hbuf[1] = (hold >>> 8) & 0xff;
            state.check = crc32(state.check, hbuf, 2, 0);
            //===//
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
        }
        else if (state.head) {
          state.head.extra = null/*Z_NULL*/;
        }
        state.mode = EXTRA;
        /* falls through */
      case EXTRA:
        if (state.flags & 0x0400) {
          copy = state.length;
          if (copy > have) { copy = have; }
          if (copy) {
            if (state.head) {
              len = state.head.extra_len - state.length;
              if (!state.head.extra) {
                // Use untyped array for more convenient processing later
                state.head.extra = new Array(state.head.extra_len);
              }
              utils.arraySet(
                state.head.extra,
                input,
                next,
                // extra field is limited to 65536 bytes
                // - no need for additional size check
                copy,
                /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
                len
              );
              //zmemcpy(state.head.extra + len, next,
              //        len + copy > state.head.extra_max ?
              //        state.head.extra_max - len : copy);
            }
            if (state.flags & 0x0200) {
              state.check = crc32(state.check, input, copy, next);
            }
            have -= copy;
            next += copy;
            state.length -= copy;
          }
          if (state.length) { break inf_leave; }
        }
        state.length = 0;
        state.mode = NAME;
        /* falls through */
      case NAME:
        if (state.flags & 0x0800) {
          if (have === 0) { break inf_leave; }
          copy = 0;
          do {
            // TODO: 2 or 1 bytes?
            len = input[next + copy++];
            /* use constant limit because in js we should not preallocate memory */
            if (state.head && len &&
                (state.length < 65536 /*state.head.name_max*/)) {
              state.head.name += String.fromCharCode(len);
            }
          } while (len && copy < have);

          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          if (len) { break inf_leave; }
        }
        else if (state.head) {
          state.head.name = null;
        }
        state.length = 0;
        state.mode = COMMENT;
        /* falls through */
      case COMMENT:
        if (state.flags & 0x1000) {
          if (have === 0) { break inf_leave; }
          copy = 0;
          do {
            len = input[next + copy++];
            /* use constant limit because in js we should not preallocate memory */
            if (state.head && len &&
                (state.length < 65536 /*state.head.comm_max*/)) {
              state.head.comment += String.fromCharCode(len);
            }
          } while (len && copy < have);
          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          if (len) { break inf_leave; }
        }
        else if (state.head) {
          state.head.comment = null;
        }
        state.mode = HCRC;
        /* falls through */
      case HCRC:
        if (state.flags & 0x0200) {
          //=== NEEDBITS(16); */
          while (bits < 16) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          if (hold !== (state.check & 0xffff)) {
            strm.msg = 'header crc mismatch';
            state.mode = BAD;
            break;
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
        }
        if (state.head) {
          state.head.hcrc = ((state.flags >> 9) & 1);
          state.head.done = true;
        }
        strm.adler = state.check = 0;
        state.mode = TYPE;
        break;
      case DICTID:
        //=== NEEDBITS(32); */
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        strm.adler = state.check = zswap32(hold);
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = DICT;
        /* falls through */
      case DICT:
        if (state.havedict === 0) {
          //--- RESTORE() ---
          strm.next_out = put;
          strm.avail_out = left;
          strm.next_in = next;
          strm.avail_in = have;
          state.hold = hold;
          state.bits = bits;
          //---
          return Z_NEED_DICT;
        }
        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
        state.mode = TYPE;
        /* falls through */
      case TYPE:
        if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
        /* falls through */
      case TYPEDO:
        if (state.last) {
          //--- BYTEBITS() ---//
          hold >>>= bits & 7;
          bits -= bits & 7;
          //---//
          state.mode = CHECK;
          break;
        }
        //=== NEEDBITS(3); */
        while (bits < 3) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.last = (hold & 0x01)/*BITS(1)*/;
        //--- DROPBITS(1) ---//
        hold >>>= 1;
        bits -= 1;
        //---//

        switch ((hold & 0x03)/*BITS(2)*/) {
          case 0:                             /* stored block */
            //Tracev((stderr, "inflate:     stored block%s\n",
            //        state.last ? " (last)" : ""));
            state.mode = STORED;
            break;
          case 1:                             /* fixed block */
            fixedtables(state);
            //Tracev((stderr, "inflate:     fixed codes block%s\n",
            //        state.last ? " (last)" : ""));
            state.mode = LEN_;             /* decode codes */
            if (flush === Z_TREES) {
              //--- DROPBITS(2) ---//
              hold >>>= 2;
              bits -= 2;
              //---//
              break inf_leave;
            }
            break;
          case 2:                             /* dynamic block */
            //Tracev((stderr, "inflate:     dynamic codes block%s\n",
            //        state.last ? " (last)" : ""));
            state.mode = TABLE;
            break;
          case 3:
            strm.msg = 'invalid block type';
            state.mode = BAD;
        }
        //--- DROPBITS(2) ---//
        hold >>>= 2;
        bits -= 2;
        //---//
        break;
      case STORED:
        //--- BYTEBITS() ---// /* go to byte boundary */
        hold >>>= bits & 7;
        bits -= bits & 7;
        //---//
        //=== NEEDBITS(32); */
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
          strm.msg = 'invalid stored block lengths';
          state.mode = BAD;
          break;
        }
        state.length = hold & 0xffff;
        //Tracev((stderr, "inflate:       stored length %u\n",
        //        state.length));
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = COPY_;
        if (flush === Z_TREES) { break inf_leave; }
        /* falls through */
      case COPY_:
        state.mode = COPY;
        /* falls through */
      case COPY:
        copy = state.length;
        if (copy) {
          if (copy > have) { copy = have; }
          if (copy > left) { copy = left; }
          if (copy === 0) { break inf_leave; }
          //--- zmemcpy(put, next, copy); ---
          utils.arraySet(output, input, next, copy, put);
          //---//
          have -= copy;
          next += copy;
          left -= copy;
          put += copy;
          state.length -= copy;
          break;
        }
        //Tracev((stderr, "inflate:       stored end\n"));
        state.mode = TYPE;
        break;
      case TABLE:
        //=== NEEDBITS(14); */
        while (bits < 14) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
        //--- DROPBITS(5) ---//
        hold >>>= 5;
        bits -= 5;
        //---//
        state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
        //--- DROPBITS(5) ---//
        hold >>>= 5;
        bits -= 5;
        //---//
        state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
        //--- DROPBITS(4) ---//
        hold >>>= 4;
        bits -= 4;
        //---//
//#ifndef PKZIP_BUG_WORKAROUND
        if (state.nlen > 286 || state.ndist > 30) {
          strm.msg = 'too many length or distance symbols';
          state.mode = BAD;
          break;
        }
//#endif
        //Tracev((stderr, "inflate:       table sizes ok\n"));
        state.have = 0;
        state.mode = LENLENS;
        /* falls through */
      case LENLENS:
        while (state.have < state.ncode) {
          //=== NEEDBITS(3);
          while (bits < 3) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
          //--- DROPBITS(3) ---//
          hold >>>= 3;
          bits -= 3;
          //---//
        }
        while (state.have < 19) {
          state.lens[order[state.have++]] = 0;
        }
        // We have separate tables & no pointers. 2 commented lines below not needed.
        //state.next = state.codes;
        //state.lencode = state.next;
        // Switch to use dynamic table
        state.lencode = state.lendyn;
        state.lenbits = 7;

        opts = { bits: state.lenbits };
        ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
        state.lenbits = opts.bits;

        if (ret) {
          strm.msg = 'invalid code lengths set';
          state.mode = BAD;
          break;
        }
        //Tracev((stderr, "inflate:       code lengths ok\n"));
        state.have = 0;
        state.mode = CODELENS;
        /* falls through */
      case CODELENS:
        while (state.have < state.nlen + state.ndist) {
          for (;;) {
            here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
            here_bits = here >>> 24;
            here_op = (here >>> 16) & 0xff;
            here_val = here & 0xffff;

            if ((here_bits) <= bits) { break; }
            //--- PULLBYTE() ---//
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
            //---//
          }
          if (here_val < 16) {
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            state.lens[state.have++] = here_val;
          }
          else {
            if (here_val === 16) {
              //=== NEEDBITS(here.bits + 2);
              n = here_bits + 2;
              while (bits < n) {
                if (have === 0) { break inf_leave; }
                have--;
                hold += input[next++] << bits;
                bits += 8;
              }
              //===//
              //--- DROPBITS(here.bits) ---//
              hold >>>= here_bits;
              bits -= here_bits;
              //---//
              if (state.have === 0) {
                strm.msg = 'invalid bit length repeat';
                state.mode = BAD;
                break;
              }
              len = state.lens[state.have - 1];
              copy = 3 + (hold & 0x03);//BITS(2);
              //--- DROPBITS(2) ---//
              hold >>>= 2;
              bits -= 2;
              //---//
            }
            else if (here_val === 17) {
              //=== NEEDBITS(here.bits + 3);
              n = here_bits + 3;
              while (bits < n) {
                if (have === 0) { break inf_leave; }
                have--;
                hold += input[next++] << bits;
                bits += 8;
              }
              //===//
              //--- DROPBITS(here.bits) ---//
              hold >>>= here_bits;
              bits -= here_bits;
              //---//
              len = 0;
              copy = 3 + (hold & 0x07);//BITS(3);
              //--- DROPBITS(3) ---//
              hold >>>= 3;
              bits -= 3;
              //---//
            }
            else {
              //=== NEEDBITS(here.bits + 7);
              n = here_bits + 7;
              while (bits < n) {
                if (have === 0) { break inf_leave; }
                have--;
                hold += input[next++] << bits;
                bits += 8;
              }
              //===//
              //--- DROPBITS(here.bits) ---//
              hold >>>= here_bits;
              bits -= here_bits;
              //---//
              len = 0;
              copy = 11 + (hold & 0x7f);//BITS(7);
              //--- DROPBITS(7) ---//
              hold >>>= 7;
              bits -= 7;
              //---//
            }
            if (state.have + copy > state.nlen + state.ndist) {
              strm.msg = 'invalid bit length repeat';
              state.mode = BAD;
              break;
            }
            while (copy--) {
              state.lens[state.have++] = len;
            }
          }
        }

        /* handle error breaks in while */
        if (state.mode === BAD) { break; }

        /* check for end-of-block code (better have one) */
        if (state.lens[256] === 0) {
          strm.msg = 'invalid code -- missing end-of-block';
          state.mode = BAD;
          break;
        }

        /* build code tables -- note: do not change the lenbits or distbits
           values here (9 and 6) without reading the comments in inftrees.h
           concerning the ENOUGH constants, which depend on those values */
        state.lenbits = 9;

        opts = { bits: state.lenbits };
        ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
        // We have separate tables & no pointers. 2 commented lines below not needed.
        // state.next_index = opts.table_index;
        state.lenbits = opts.bits;
        // state.lencode = state.next;

        if (ret) {
          strm.msg = 'invalid literal/lengths set';
          state.mode = BAD;
          break;
        }

        state.distbits = 6;
        //state.distcode.copy(state.codes);
        // Switch to use dynamic table
        state.distcode = state.distdyn;
        opts = { bits: state.distbits };
        ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
        // We have separate tables & no pointers. 2 commented lines below not needed.
        // state.next_index = opts.table_index;
        state.distbits = opts.bits;
        // state.distcode = state.next;

        if (ret) {
          strm.msg = 'invalid distances set';
          state.mode = BAD;
          break;
        }
        //Tracev((stderr, 'inflate:       codes ok\n'));
        state.mode = LEN_;
        if (flush === Z_TREES) { break inf_leave; }
        /* falls through */
      case LEN_:
        state.mode = LEN;
        /* falls through */
      case LEN:
        if (have >= 6 && left >= 258) {
          //--- RESTORE() ---
          strm.next_out = put;
          strm.avail_out = left;
          strm.next_in = next;
          strm.avail_in = have;
          state.hold = hold;
          state.bits = bits;
          //---
          inflate_fast(strm, _out);
          //--- LOAD() ---
          put = strm.next_out;
          output = strm.output;
          left = strm.avail_out;
          next = strm.next_in;
          input = strm.input;
          have = strm.avail_in;
          hold = state.hold;
          bits = state.bits;
          //---

          if (state.mode === TYPE) {
            state.back = -1;
          }
          break;
        }
        state.back = 0;
        for (;;) {
          here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if (here_bits <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if (here_op && (here_op & 0xf0) === 0) {
          last_bits = here_bits;
          last_op = here_op;
          last_val = here_val;
          for (;;) {
            here = state.lencode[last_val +
                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
            here_bits = here >>> 24;
            here_op = (here >>> 16) & 0xff;
            here_val = here & 0xffff;

            if ((last_bits + here_bits) <= bits) { break; }
            //--- PULLBYTE() ---//
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
            //---//
          }
          //--- DROPBITS(last.bits) ---//
          hold >>>= last_bits;
          bits -= last_bits;
          //---//
          state.back += last_bits;
        }
        //--- DROPBITS(here.bits) ---//
        hold >>>= here_bits;
        bits -= here_bits;
        //---//
        state.back += here_bits;
        state.length = here_val;
        if (here_op === 0) {
          //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
          //        "inflate:         literal '%c'\n" :
          //        "inflate:         literal 0x%02x\n", here.val));
          state.mode = LIT;
          break;
        }
        if (here_op & 32) {
          //Tracevv((stderr, "inflate:         end of block\n"));
          state.back = -1;
          state.mode = TYPE;
          break;
        }
        if (here_op & 64) {
          strm.msg = 'invalid literal/length code';
          state.mode = BAD;
          break;
        }
        state.extra = here_op & 15;
        state.mode = LENEXT;
        /* falls through */
      case LENEXT:
        if (state.extra) {
          //=== NEEDBITS(state.extra);
          n = state.extra;
          while (bits < n) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
          //--- DROPBITS(state.extra) ---//
          hold >>>= state.extra;
          bits -= state.extra;
          //---//
          state.back += state.extra;
        }
        //Tracevv((stderr, "inflate:         length %u\n", state.length));
        state.was = state.length;
        state.mode = DIST;
        /* falls through */
      case DIST:
        for (;;) {
          here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if ((here_op & 0xf0) === 0) {
          last_bits = here_bits;
          last_op = here_op;
          last_val = here_val;
          for (;;) {
            here = state.distcode[last_val +
                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
            here_bits = here >>> 24;
            here_op = (here >>> 16) & 0xff;
            here_val = here & 0xffff;

            if ((last_bits + here_bits) <= bits) { break; }
            //--- PULLBYTE() ---//
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
            //---//
          }
          //--- DROPBITS(last.bits) ---//
          hold >>>= last_bits;
          bits -= last_bits;
          //---//
          state.back += last_bits;
        }
        //--- DROPBITS(here.bits) ---//
        hold >>>= here_bits;
        bits -= here_bits;
        //---//
        state.back += here_bits;
        if (here_op & 64) {
          strm.msg = 'invalid distance code';
          state.mode = BAD;
          break;
        }
        state.offset = here_val;
        state.extra = (here_op) & 15;
        state.mode = DISTEXT;
        /* falls through */
      case DISTEXT:
        if (state.extra) {
          //=== NEEDBITS(state.extra);
          n = state.extra;
          while (bits < n) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
          //--- DROPBITS(state.extra) ---//
          hold >>>= state.extra;
          bits -= state.extra;
          //---//
          state.back += state.extra;
        }
//#ifdef INFLATE_STRICT
        if (state.offset > state.dmax) {
          strm.msg = 'invalid distance too far back';
          state.mode = BAD;
          break;
        }
//#endif
        //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
        state.mode = MATCH;
        /* falls through */
      case MATCH:
        if (left === 0) { break inf_leave; }
        copy = _out - left;
        if (state.offset > copy) {         /* copy from window */
          copy = state.offset - copy;
          if (copy > state.whave) {
            if (state.sane) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break;
            }
// (!) This block is disabled in zlib defaults,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//          Trace((stderr, "inflate.c too far\n"));
//          copy -= state.whave;
//          if (copy > state.length) { copy = state.length; }
//          if (copy > left) { copy = left; }
//          left -= copy;
//          state.length -= copy;
//          do {
//            output[put++] = 0;
//          } while (--copy);
//          if (state.length === 0) { state.mode = LEN; }
//          break;
//#endif
          }
          if (copy > state.wnext) {
            copy -= state.wnext;
            from = state.wsize - copy;
          }
          else {
            from = state.wnext - copy;
          }
          if (copy > state.length) { copy = state.length; }
          from_source = state.window;
        }
        else {                              /* copy from output */
          from_source = output;
          from = put - state.offset;
          copy = state.length;
        }
        if (copy > left) { copy = left; }
        left -= copy;
        state.length -= copy;
        do {
          output[put++] = from_source[from++];
        } while (--copy);
        if (state.length === 0) { state.mode = LEN; }
        break;
      case LIT:
        if (left === 0) { break inf_leave; }
        output[put++] = state.length;
        left--;
        state.mode = LEN;
        break;
      case CHECK:
        if (state.wrap) {
          //=== NEEDBITS(32);
          while (bits < 32) {
            if (have === 0) { break inf_leave; }
            have--;
            // Use '|' instead of '+' to make sure that result is signed
            hold |= input[next++] << bits;
            bits += 8;
          }
          //===//
          _out -= left;
          strm.total_out += _out;
          state.total += _out;
          if (_out) {
            strm.adler = state.check =
                /*UPDATE(state.check, put - _out, _out);*/
                (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));

          }
          _out = left;
          // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too
          if ((state.flags ? hold : zswap32(hold)) !== state.check) {
            strm.msg = 'incorrect data check';
            state.mode = BAD;
            break;
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
          //Tracev((stderr, "inflate:   check matches trailer\n"));
        }
        state.mode = LENGTH;
        /* falls through */
      case LENGTH:
        if (state.wrap && state.flags) {
          //=== NEEDBITS(32);
          while (bits < 32) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          if (hold !== (state.total & 0xffffffff)) {
            strm.msg = 'incorrect length check';
            state.mode = BAD;
            break;
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
          //Tracev((stderr, "inflate:   length matches trailer\n"));
        }
        state.mode = DONE;
        /* falls through */
      case DONE:
        ret = Z_STREAM_END;
        break inf_leave;
      case BAD:
        ret = Z_DATA_ERROR;
        break inf_leave;
      case MEM:
        return Z_MEM_ERROR;
      case SYNC:
        /* falls through */
      default:
        return Z_STREAM_ERROR;
    }
  }

  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"

  /*
     Return from inflate(), updating the total counts and the check value.
     If there was no progress during the inflate() call, return a buffer
     error.  Call updatewindow() to create and/or update the window state.
     Note: a memory error from inflate() is non-recoverable.
   */

  //--- RESTORE() ---
  strm.next_out = put;
  strm.avail_out = left;
  strm.next_in = next;
  strm.avail_in = have;
  state.hold = hold;
  state.bits = bits;
  //---

  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
                      (state.mode < CHECK || flush !== Z_FINISH))) {
    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
      state.mode = MEM;
      return Z_MEM_ERROR;
    }
  }
  _in -= strm.avail_in;
  _out -= strm.avail_out;
  strm.total_in += _in;
  strm.total_out += _out;
  state.total += _out;
  if (state.wrap && _out) {
    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
  }
  strm.data_type = state.bits + (state.last ? 64 : 0) +
                    (state.mode === TYPE ? 128 : 0) +
                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
    ret = Z_BUF_ERROR;
  }
  return ret;
}

function inflateEnd(strm) {

  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
    return Z_STREAM_ERROR;
  }

  var state = strm.state;
  if (state.window) {
    state.window = null;
  }
  strm.state = null;
  return Z_OK;
}

function inflateGetHeader(strm, head) {
  var state;

  /* check state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }

  /* save header structure */
  state.head = head;
  head.done = false;
  return Z_OK;
}

function inflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var state;
  var dictid;
  var ret;

  /* check state */
  if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }
  state = strm.state;

  if (state.wrap !== 0 && state.mode !== DICT) {
    return Z_STREAM_ERROR;
  }

  /* check for correct dictionary identifier */
  if (state.mode === DICT) {
    dictid = 1; /* adler32(0, null, 0)*/
    /* dictid = adler32(dictid, dictionary, dictLength); */
    dictid = adler32(dictid, dictionary, dictLength, 0);
    if (dictid !== state.check) {
      return Z_DATA_ERROR;
    }
  }
  /* copy dictionary to window using updatewindow(), which will amend the
   existing dictionary if appropriate */
  ret = updatewindow(strm, dictionary, dictLength, dictLength);
  if (ret) {
    state.mode = MEM;
    return Z_MEM_ERROR;
  }
  state.havedict = 1;
  // Tracev((stderr, "inflate:   dictionary set\n"));
  return Z_OK;
}

exports.inflateReset = inflateReset;
exports.inflateReset2 = inflateReset2;
exports.inflateResetKeep = inflateResetKeep;
exports.inflateInit = inflateInit;
exports.inflateInit2 = inflateInit2;
exports.inflate = inflate;
exports.inflateEnd = inflateEnd;
exports.inflateGetHeader = inflateGetHeader;
exports.inflateSetDictionary = inflateSetDictionary;
exports.inflateInfo = 'pako inflate (from Nodeca project)';

/* Not implemented
exports.inflateCopy = inflateCopy;
exports.inflateGetDictionary = inflateGetDictionary;
exports.inflateMark = inflateMark;
exports.inflatePrime = inflatePrime;
exports.inflateSync = inflateSync;
exports.inflateSyncPoint = inflateSyncPoint;
exports.inflateUndermine = inflateUndermine;
*/


/***/ }),
/* 398 */
/*!******************************************!*\
  !*** ./node_modules/pako/lib/inflate.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";



var zlib_inflate = __webpack_require__(/*! ./zlib/inflate */ 397);
var utils        = __webpack_require__(/*! ./utils/common */ 112);
var strings      = __webpack_require__(/*! ./utils/strings */ 216);
var c            = __webpack_require__(/*! ./zlib/constants */ 214);
var msg          = __webpack_require__(/*! ./zlib/messages */ 183);
var ZStream      = __webpack_require__(/*! ./zlib/zstream */ 215);
var GZheader     = __webpack_require__(/*! ./zlib/gzheader */ 394);

var toString = Object.prototype.toString;

/**
 * class Inflate
 *
 * Generic JS-style wrapper for zlib calls. If you don't need
 * streaming behaviour - use more simple functions: [[inflate]]
 * and [[inflateRaw]].
 **/

/* internal
 * inflate.chunks -> Array
 *
 * Chunks of output data, if [[Inflate#onData]] not overridden.
 **/

/**
 * Inflate.result -> Uint8Array|Array|String
 *
 * Uncompressed result, generated by default [[Inflate#onData]]
 * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
 * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you
 * push a chunk with explicit flush (call [[Inflate#push]] with
 * `Z_SYNC_FLUSH` param).
 **/

/**
 * Inflate.err -> Number
 *
 * Error code after inflate finished. 0 (Z_OK) on success.
 * Should be checked if broken data possible.
 **/

/**
 * Inflate.msg -> String
 *
 * Error message, if [[Inflate.err]] != 0
 **/


/**
 * new Inflate(options)
 * - options (Object): zlib inflate options.
 *
 * Creates new inflator instance with specified params. Throws exception
 * on bad params. Supported options:
 *
 * - `windowBits`
 * - `dictionary`
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information on these.
 *
 * Additional options, for internal needs:
 *
 * - `chunkSize` - size of generated data chunks (16K by default)
 * - `raw` (Boolean) - do raw inflate
 * - `to` (String) - if equal to 'string', then result will be converted
 *   from utf8 to utf16 (javascript) string. When string output requested,
 *   chunk length can differ from `chunkSize`, depending on content.
 *
 * By default, when no options set, autodetect deflate/gzip data format via
 * wrapper header.
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
 *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
 *
 * var inflate = new pako.Inflate({ level: 3});
 *
 * inflate.push(chunk1, false);
 * inflate.push(chunk2, true);  // true -> last chunk
 *
 * if (inflate.err) { throw new Error(inflate.err); }
 *
 * console.log(inflate.result);
 * ```
 **/
function Inflate(options) {
  if (!(this instanceof Inflate)) return new Inflate(options);

  this.options = utils.assign({
    chunkSize: 16384,
    windowBits: 0,
    to: ''
  }, options || {});

  var opt = this.options;

  // Force window size for `raw` data, if not set directly,
  // because we have no header for autodetect.
  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {
    opt.windowBits = -opt.windowBits;
    if (opt.windowBits === 0) { opt.windowBits = -15; }
  }

  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate
  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&
      !(options && options.windowBits)) {
    opt.windowBits += 32;
  }

  // Gzip header has no info about windows size, we can do autodetect only
  // for deflate. So, if window size not set, force it to max when gzip possible
  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {
    // bit 3 (16) -> gzipped data
    // bit 4 (32) -> autodetect gzip/deflate
    if ((opt.windowBits & 15) === 0) {
      opt.windowBits |= 15;
    }
  }

  this.err    = 0;      // error code, if happens (0 = Z_OK)
  this.msg    = '';     // error message
  this.ended  = false;  // used to avoid multiple onEnd() calls
  this.chunks = [];     // chunks of compressed data

  this.strm   = new ZStream();
  this.strm.avail_out = 0;

  var status  = zlib_inflate.inflateInit2(
    this.strm,
    opt.windowBits
  );

  if (status !== c.Z_OK) {
    throw new Error(msg[status]);
  }

  this.header = new GZheader();

  zlib_inflate.inflateGetHeader(this.strm, this.header);
}

/**
 * Inflate#push(data[, mode]) -> Boolean
 * - data (Uint8Array|Array|ArrayBuffer|String): input data
 * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
 *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
 *
 * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
 * new output chunks. Returns `true` on success. The last data block must have
 * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
 * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you
 * can use mode Z_SYNC_FLUSH, keeping the decompression context.
 *
 * On fail call [[Inflate#onEnd]] with error code and return false.
 *
 * We strongly recommend to use `Uint8Array` on input for best speed (output
 * format is detected automatically). Also, don't skip last param and always
 * use the same type in your code (boolean or number). That will improve JS speed.
 *
 * For regular `Array`-s make sure all elements are [0..255].
 *
 * ##### Example
 *
 * ```javascript
 * push(chunk, false); // push one of data chunks
 * ...
 * push(chunk, true);  // push last chunk
 * ```
 **/
Inflate.prototype.push = function (data, mode) {
  var strm = this.strm;
  var chunkSize = this.options.chunkSize;
  var dictionary = this.options.dictionary;
  var status, _mode;
  var next_out_utf8, tail, utf8str;
  var dict;

  // Flag to properly process Z_BUF_ERROR on testing inflate call
  // when we check that all output data was flushed.
  var allowBufError = false;

  if (this.ended) { return false; }
  _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);

  // Convert data if needed
  if (typeof data === 'string') {
    // Only binary strings can be decompressed on practice
    strm.input = strings.binstring2buf(data);
  } else if (toString.call(data) === '[object ArrayBuffer]') {
    strm.input = new Uint8Array(data);
  } else {
    strm.input = data;
  }

  strm.next_in = 0;
  strm.avail_in = strm.input.length;

  do {
    if (strm.avail_out === 0) {
      strm.output = new utils.Buf8(chunkSize);
      strm.next_out = 0;
      strm.avail_out = chunkSize;
    }

    status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH);    /* no bad return value */

    if (status === c.Z_NEED_DICT && dictionary) {
      // Convert data if needed
      if (typeof dictionary === 'string') {
        dict = strings.string2buf(dictionary);
      } else if (toString.call(dictionary) === '[object ArrayBuffer]') {
        dict = new Uint8Array(dictionary);
      } else {
        dict = dictionary;
      }

      status = zlib_inflate.inflateSetDictionary(this.strm, dict);

    }

    if (status === c.Z_BUF_ERROR && allowBufError === true) {
      status = c.Z_OK;
      allowBufError = false;
    }

    if (status !== c.Z_STREAM_END && status !== c.Z_OK) {
      this.onEnd(status);
      this.ended = true;
      return false;
    }

    if (strm.next_out) {
      if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {

        if (this.options.to === 'string') {

          next_out_utf8 = strings.utf8border(strm.output, strm.next_out);

          tail = strm.next_out - next_out_utf8;
          utf8str = strings.buf2string(strm.output, next_out_utf8);

          // move tail
          strm.next_out = tail;
          strm.avail_out = chunkSize - tail;
          if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }

          this.onData(utf8str);

        } else {
          this.onData(utils.shrinkBuf(strm.output, strm.next_out));
        }
      }
    }

    // When no more input data, we should check that internal inflate buffers
    // are flushed. The only way to do it when avail_out = 0 - run one more
    // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR.
    // Here we set flag to process this error properly.
    //
    // NOTE. Deflate does not return error in this case and does not needs such
    // logic.
    if (strm.avail_in === 0 && strm.avail_out === 0) {
      allowBufError = true;
    }

  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END);

  if (status === c.Z_STREAM_END) {
    _mode = c.Z_FINISH;
  }

  // Finalize on the last chunk.
  if (_mode === c.Z_FINISH) {
    status = zlib_inflate.inflateEnd(this.strm);
    this.onEnd(status);
    this.ended = true;
    return status === c.Z_OK;
  }

  // callback interim results if Z_SYNC_FLUSH.
  if (_mode === c.Z_SYNC_FLUSH) {
    this.onEnd(c.Z_OK);
    strm.avail_out = 0;
    return true;
  }

  return true;
};


/**
 * Inflate#onData(chunk) -> Void
 * - chunk (Uint8Array|Array|String): output data. Type of array depends
 *   on js engine support. When string output requested, each chunk
 *   will be string.
 *
 * By default, stores data blocks in `chunks[]` property and glue
 * those in `onEnd`. Override this handler, if you need another behaviour.
 **/
Inflate.prototype.onData = function (chunk) {
  this.chunks.push(chunk);
};


/**
 * Inflate#onEnd(status) -> Void
 * - status (Number): inflate status. 0 (Z_OK) on success,
 *   other if not.
 *
 * Called either after you tell inflate that the input stream is
 * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
 * or if an error happened. By default - join collected chunks,
 * free memory and fill `results` / `err` properties.
 **/
Inflate.prototype.onEnd = function (status) {
  // On success - join
  if (status === c.Z_OK) {
    if (this.options.to === 'string') {
      // Glue & convert here, until we teach pako to send
      // utf8 aligned strings to onData
      this.result = this.chunks.join('');
    } else {
      this.result = utils.flattenChunks(this.chunks);
    }
  }
  this.chunks = [];
  this.err = status;
  this.msg = this.strm.msg;
};


/**
 * inflate(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to decompress.
 * - options (Object): zlib inflate options.
 *
 * Decompress `data` with inflate/ungzip and `options`. Autodetect
 * format via wrapper header by default. That's why we don't provide
 * separate `ungzip` method.
 *
 * Supported options are:
 *
 * - windowBits
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information.
 *
 * Sugar (options):
 *
 * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
 *   negative windowBits implicitly.
 * - `to` (String) - if equal to 'string', then result will be converted
 *   from utf8 to utf16 (javascript) string. When string output requested,
 *   chunk length can differ from `chunkSize`, depending on content.
 *
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , input = pako.deflate([1,2,3,4,5,6,7,8,9])
 *   , output;
 *
 * try {
 *   output = pako.inflate(input);
 * } catch (err)
 *   console.log(err);
 * }
 * ```
 **/
function inflate(input, options) {
  var inflator = new Inflate(options);

  inflator.push(input, true);

  // That will never happens, if you don't cheat with options :)
  if (inflator.err) { throw inflator.msg || msg[inflator.err]; }

  return inflator.result;
}


/**
 * inflateRaw(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to decompress.
 * - options (Object): zlib inflate options.
 *
 * The same as [[inflate]], but creates raw data, without wrapper
 * (header and adler32 crc).
 **/
function inflateRaw(input, options) {
  options = options || {};
  options.raw = true;
  return inflate(input, options);
}


/**
 * ungzip(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to decompress.
 * - options (Object): zlib inflate options.
 *
 * Just shortcut to [[inflate]], because it autodetects format
 * by header.content. Done for convenience.
 **/


exports.Inflate = Inflate;
exports.inflate = inflate;
exports.inflateRaw = inflateRaw;
exports.ungzip  = inflate;


/***/ }),
/* 399 */
/*!*********************************************!*\
  !*** ./node_modules/pako/lib/zlib/trees.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils = __webpack_require__(/*! ../utils/common */ 112);

/* Public constants ==========================================================*/
/* ===========================================================================*/


//var Z_FILTERED          = 1;
//var Z_HUFFMAN_ONLY      = 2;
//var Z_RLE               = 3;
var Z_FIXED               = 4;
//var Z_DEFAULT_STRATEGY  = 0;

/* Possible values of the data_type field (though see inflate()) */
var Z_BINARY              = 0;
var Z_TEXT                = 1;
//var Z_ASCII             = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;

/*============================================================================*/


function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }

// From zutil.h

var STORED_BLOCK = 0;
var STATIC_TREES = 1;
var DYN_TREES    = 2;
/* The three kinds of block type */

var MIN_MATCH    = 3;
var MAX_MATCH    = 258;
/* The minimum and maximum match lengths */

// From deflate.h
/* ===========================================================================
 * Internal compression state.
 */

var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */

var LITERALS      = 256;
/* number of literal bytes 0..255 */

var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */

var D_CODES       = 30;
/* number of distance codes */

var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */

var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */

var MAX_BITS      = 15;
/* All codes must not exceed MAX_BITS bits */

var Buf_size      = 16;
/* size of bit buffer in bi_buf */


/* ===========================================================================
 * Constants
 */

var MAX_BL_BITS = 7;
/* Bit length codes must not exceed MAX_BL_BITS bits */

var END_BLOCK   = 256;
/* end of block literal code */

var REP_3_6     = 16;
/* repeat previous bit length 3-6 times (2 bits of repeat count) */

var REPZ_3_10   = 17;
/* repeat a zero length 3-10 times  (3 bits of repeat count) */

var REPZ_11_138 = 18;
/* repeat a zero length 11-138 times  (7 bits of repeat count) */

/* eslint-disable comma-spacing,array-bracket-spacing */
var extra_lbits =   /* extra bits for each length code */
  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];

var extra_dbits =   /* extra bits for each distance code */
  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];

var extra_blbits =  /* extra bits for each bit length code */
  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];

var bl_order =
  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
/* eslint-enable comma-spacing,array-bracket-spacing */

/* The lengths of the bit length codes are sent in order of decreasing
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

/* ===========================================================================
 * Local data. These are initialized only once.
 */

// We pre-fill arrays with 0 to avoid uninitialized gaps

var DIST_CODE_LEN = 512; /* see definition of array dist_code below */

// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1
var static_ltree  = new Array((L_CODES + 2) * 2);
zero(static_ltree);
/* The static literal tree. Since the bit lengths are imposed, there is no
 * need for the L_CODES extra codes used during heap construction. However
 * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
 * below).
 */

var static_dtree  = new Array(D_CODES * 2);
zero(static_dtree);
/* The static distance tree. (Actually a trivial tree since all codes use
 * 5 bits.)
 */

var _dist_code    = new Array(DIST_CODE_LEN);
zero(_dist_code);
/* Distance codes. The first 256 values correspond to the distances
 * 3 .. 258, the last 256 values correspond to the top 8 bits of
 * the 15 bit distances.
 */

var _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);
zero(_length_code);
/* length code for each normalized match length (0 == MIN_MATCH) */

var base_length   = new Array(LENGTH_CODES);
zero(base_length);
/* First normalized length for each code (0 = MIN_MATCH) */

var base_dist     = new Array(D_CODES);
zero(base_dist);
/* First normalized distance for each code (0 = distance of 1) */


function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {

  this.static_tree  = static_tree;  /* static tree or NULL */
  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
  this.extra_base   = extra_base;   /* base index for extra_bits */
  this.elems        = elems;        /* max number of elements in the tree */
  this.max_length   = max_length;   /* max bit length for the codes */

  // show if `static_tree` has data or dummy - needed for monomorphic objects
  this.has_stree    = static_tree && static_tree.length;
}


var static_l_desc;
var static_d_desc;
var static_bl_desc;


function TreeDesc(dyn_tree, stat_desc) {
  this.dyn_tree = dyn_tree;     /* the dynamic tree */
  this.max_code = 0;            /* largest code with non zero frequency */
  this.stat_desc = stat_desc;   /* the corresponding static tree */
}



function d_code(dist) {
  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
}


/* ===========================================================================
 * Output a short LSB first on the stream.
 * IN assertion: there is enough room in pendingBuf.
 */
function put_short(s, w) {
//    put_byte(s, (uch)((w) & 0xff));
//    put_byte(s, (uch)((ush)(w) >> 8));
  s.pending_buf[s.pending++] = (w) & 0xff;
  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
}


/* ===========================================================================
 * Send a value on a given number of bits.
 * IN assertion: length <= 16 and value fits in length bits.
 */
function send_bits(s, value, length) {
  if (s.bi_valid > (Buf_size - length)) {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    put_short(s, s.bi_buf);
    s.bi_buf = value >> (Buf_size - s.bi_valid);
    s.bi_valid += length - Buf_size;
  } else {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    s.bi_valid += length;
  }
}


function send_code(s, c, tree) {
  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
}


/* ===========================================================================
 * Reverse the first len bits of a code, using straightforward code (a faster
 * method would use a table)
 * IN assertion: 1 <= len <= 15
 */
function bi_reverse(code, len) {
  var res = 0;
  do {
    res |= code & 1;
    code >>>= 1;
    res <<= 1;
  } while (--len > 0);
  return res >>> 1;
}


/* ===========================================================================
 * Flush the bit buffer, keeping at most 7 bits in it.
 */
function bi_flush(s) {
  if (s.bi_valid === 16) {
    put_short(s, s.bi_buf);
    s.bi_buf = 0;
    s.bi_valid = 0;

  } else if (s.bi_valid >= 8) {
    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
    s.bi_buf >>= 8;
    s.bi_valid -= 8;
  }
}


/* ===========================================================================
 * Compute the optimal bit lengths for a tree and update the total bit length
 * for the current block.
 * IN assertion: the fields freq and dad are set, heap[heap_max] and
 *    above are the tree nodes sorted by increasing frequency.
 * OUT assertions: the field len is set to the optimal bit length, the
 *     array bl_count contains the frequencies for each bit length.
 *     The length opt_len is updated; static_len is also updated if stree is
 *     not null.
 */
function gen_bitlen(s, desc)
//    deflate_state *s;
//    tree_desc *desc;    /* the tree descriptor */
{
  var tree            = desc.dyn_tree;
  var max_code        = desc.max_code;
  var stree           = desc.stat_desc.static_tree;
  var has_stree       = desc.stat_desc.has_stree;
  var extra           = desc.stat_desc.extra_bits;
  var base            = desc.stat_desc.extra_base;
  var max_length      = desc.stat_desc.max_length;
  var h;              /* heap index */
  var n, m;           /* iterate over the tree elements */
  var bits;           /* bit length */
  var xbits;          /* extra bits */
  var f;              /* frequency */
  var overflow = 0;   /* number of elements with bit length too large */

  for (bits = 0; bits <= MAX_BITS; bits++) {
    s.bl_count[bits] = 0;
  }

  /* In a first pass, compute the optimal bit lengths (which may
   * overflow in the case of the bit length tree).
   */
  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */

  for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {
    n = s.heap[h];
    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
    if (bits > max_length) {
      bits = max_length;
      overflow++;
    }
    tree[n * 2 + 1]/*.Len*/ = bits;
    /* We overwrite tree[n].Dad which is no longer needed */

    if (n > max_code) { continue; } /* not a leaf node */

    s.bl_count[bits]++;
    xbits = 0;
    if (n >= base) {
      xbits = extra[n - base];
    }
    f = tree[n * 2]/*.Freq*/;
    s.opt_len += f * (bits + xbits);
    if (has_stree) {
      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);
    }
  }
  if (overflow === 0) { return; }

  // Trace((stderr,"\nbit length overflow\n"));
  /* This happens for example on obj2 and pic of the Calgary corpus */

  /* Find the first bit length which could increase: */
  do {
    bits = max_length - 1;
    while (s.bl_count[bits] === 0) { bits--; }
    s.bl_count[bits]--;      /* move one leaf down the tree */
    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */
    s.bl_count[max_length]--;
    /* The brother of the overflow item also moves one step up,
     * but this does not affect bl_count[max_length]
     */
    overflow -= 2;
  } while (overflow > 0);

  /* Now recompute all bit lengths, scanning in increasing frequency.
   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
   * lengths instead of fixing only the wrong ones. This idea is taken
   * from 'ar' written by Haruhiko Okumura.)
   */
  for (bits = max_length; bits !== 0; bits--) {
    n = s.bl_count[bits];
    while (n !== 0) {
      m = s.heap[--h];
      if (m > max_code) { continue; }
      if (tree[m * 2 + 1]/*.Len*/ !== bits) {
        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;
        tree[m * 2 + 1]/*.Len*/ = bits;
      }
      n--;
    }
  }
}


/* ===========================================================================
 * Generate the codes for a given tree and bit counts (which need not be
 * optimal).
 * IN assertion: the array bl_count contains the bit length statistics for
 * the given tree and the field len is set for all tree elements.
 * OUT assertion: the field code is set for all tree elements of non
 *     zero code length.
 */
function gen_codes(tree, max_code, bl_count)
//    ct_data *tree;             /* the tree to decorate */
//    int max_code;              /* largest code with non zero frequency */
//    ushf *bl_count;            /* number of codes at each bit length */
{
  var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */
  var code = 0;              /* running code value */
  var bits;                  /* bit index */
  var n;                     /* code index */

  /* The distribution counts are first used to generate the code values
   * without bit reversal.
   */
  for (bits = 1; bits <= MAX_BITS; bits++) {
    next_code[bits] = code = (code + bl_count[bits - 1]) << 1;
  }
  /* Check that the bit counts in bl_count are consistent. The last code
   * must be all ones.
   */
  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
  //        "inconsistent bit counts");
  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));

  for (n = 0;  n <= max_code; n++) {
    var len = tree[n * 2 + 1]/*.Len*/;
    if (len === 0) { continue; }
    /* Now reverse the bits */
    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);

    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
  }
}


/* ===========================================================================
 * Initialize the various 'constant' tables.
 */
function tr_static_init() {
  var n;        /* iterates over tree elements */
  var bits;     /* bit counter */
  var length;   /* length value */
  var code;     /* code value */
  var dist;     /* distance index */
  var bl_count = new Array(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  // do check in _tr_init()
  //if (static_init_done) return;

  /* For some embedded targets, global variables are not initialized: */
/*#ifdef NO_INIT_GLOBAL_POINTERS
  static_l_desc.static_tree = static_ltree;
  static_l_desc.extra_bits = extra_lbits;
  static_d_desc.static_tree = static_dtree;
  static_d_desc.extra_bits = extra_dbits;
  static_bl_desc.extra_bits = extra_blbits;
#endif*/

  /* Initialize the mapping length (0..255) -> length code (0..28) */
  length = 0;
  for (code = 0; code < LENGTH_CODES - 1; code++) {
    base_length[code] = length;
    for (n = 0; n < (1 << extra_lbits[code]); n++) {
      _length_code[length++] = code;
    }
  }
  //Assert (length == 256, "tr_static_init: length != 256");
  /* Note that the length 255 (match length 258) can be represented
   * in two different ways: code 284 + 5 bits or code 285, so we
   * overwrite length_code[255] to use the best encoding:
   */
  _length_code[length - 1] = code;

  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
  dist = 0;
  for (code = 0; code < 16; code++) {
    base_dist[code] = dist;
    for (n = 0; n < (1 << extra_dbits[code]); n++) {
      _dist_code[dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: dist != 256");
  dist >>= 7; /* from now on, all distances are divided by 128 */
  for (; code < D_CODES; code++) {
    base_dist[code] = dist << 7;
    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
      _dist_code[256 + dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: 256+dist != 512");

  /* Construct the codes of the static literal tree */
  for (bits = 0; bits <= MAX_BITS; bits++) {
    bl_count[bits] = 0;
  }

  n = 0;
  while (n <= 143) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  while (n <= 255) {
    static_ltree[n * 2 + 1]/*.Len*/ = 9;
    n++;
    bl_count[9]++;
  }
  while (n <= 279) {
    static_ltree[n * 2 + 1]/*.Len*/ = 7;
    n++;
    bl_count[7]++;
  }
  while (n <= 287) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  /* Codes 286 and 287 do not exist, but we must include them in the
   * tree construction to get a canonical Huffman tree (longest code
   * all ones)
   */
  gen_codes(static_ltree, L_CODES + 1, bl_count);

  /* The static distance tree is trivial: */
  for (n = 0; n < D_CODES; n++) {
    static_dtree[n * 2 + 1]/*.Len*/ = 5;
    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);
  }

  // Now data ready and we can init static trees
  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS);
  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);

  //static_init_done = true;
}


/* ===========================================================================
 * Initialize a new block.
 */
function init_block(s) {
  var n; /* iterates over tree elements */

  /* Initialize the trees. */
  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }

  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;
  s.opt_len = s.static_len = 0;
  s.last_lit = s.matches = 0;
}


/* ===========================================================================
 * Flush the bit buffer and align the output on a byte boundary
 */
function bi_windup(s)
{
  if (s.bi_valid > 8) {
    put_short(s, s.bi_buf);
  } else if (s.bi_valid > 0) {
    //put_byte(s, (Byte)s->bi_buf);
    s.pending_buf[s.pending++] = s.bi_buf;
  }
  s.bi_buf = 0;
  s.bi_valid = 0;
}

/* ===========================================================================
 * Copy a stored block, storing first the length and its
 * one's complement if requested.
 */
function copy_block(s, buf, len, header)
//DeflateState *s;
//charf    *buf;    /* the input data */
//unsigned len;     /* its length */
//int      header;  /* true if block header must be written */
{
  bi_windup(s);        /* align on byte boundary */

  if (header) {
    put_short(s, len);
    put_short(s, ~len);
  }
//  while (len--) {
//    put_byte(s, *buf++);
//  }
  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
  s.pending += len;
}

/* ===========================================================================
 * Compares to subtrees, using the tree depth as tie breaker when
 * the subtrees have equal frequency. This minimizes the worst case length.
 */
function smaller(tree, n, m, depth) {
  var _n2 = n * 2;
  var _m2 = m * 2;
  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
}

/* ===========================================================================
 * Restore the heap property by moving down the tree starting at node k,
 * exchanging a node with the smallest of its two sons if necessary, stopping
 * when the heap property is re-established (each father smaller than its
 * two sons).
 */
function pqdownheap(s, tree, k)
//    deflate_state *s;
//    ct_data *tree;  /* the tree to restore */
//    int k;               /* node to move down */
{
  var v = s.heap[k];
  var j = k << 1;  /* left son of k */
  while (j <= s.heap_len) {
    /* Set j to the smallest of the two sons: */
    if (j < s.heap_len &&
      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {
      j++;
    }
    /* Exit if v is smaller than both sons */
    if (smaller(tree, v, s.heap[j], s.depth)) { break; }

    /* Exchange v with the smallest son */
    s.heap[k] = s.heap[j];
    k = j;

    /* And continue down the tree, setting j to the left son of k */
    j <<= 1;
  }
  s.heap[k] = v;
}


// inlined manually
// var SMALLEST = 1;

/* ===========================================================================
 * Send the block data compressed using the given Huffman trees
 */
function compress_block(s, ltree, dtree)
//    deflate_state *s;
//    const ct_data *ltree; /* literal tree */
//    const ct_data *dtree; /* distance tree */
{
  var dist;           /* distance of matched string */
  var lc;             /* match length or unmatched char (if dist == 0) */
  var lx = 0;         /* running index in l_buf */
  var code;           /* the code to send */
  var extra;          /* number of extra bits to send */

  if (s.last_lit !== 0) {
    do {
      dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]);
      lc = s.pending_buf[s.l_buf + lx];
      lx++;

      if (dist === 0) {
        send_code(s, lc, ltree); /* send a literal byte */
        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
      } else {
        /* Here, lc is the match length - MIN_MATCH */
        code = _length_code[lc];
        send_code(s, code + LITERALS + 1, ltree); /* send the length code */
        extra = extra_lbits[code];
        if (extra !== 0) {
          lc -= base_length[code];
          send_bits(s, lc, extra);       /* send the extra length bits */
        }
        dist--; /* dist is now the match distance - 1 */
        code = d_code(dist);
        //Assert (code < D_CODES, "bad d_code");

        send_code(s, code, dtree);       /* send the distance code */
        extra = extra_dbits[code];
        if (extra !== 0) {
          dist -= base_dist[code];
          send_bits(s, dist, extra);   /* send the extra distance bits */
        }
      } /* literal or match pair ? */

      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
      //       "pendingBuf overflow");

    } while (lx < s.last_lit);
  }

  send_code(s, END_BLOCK, ltree);
}


/* ===========================================================================
 * Construct one Huffman tree and assigns the code bit strings and lengths.
 * Update the total bit length for the current block.
 * IN assertion: the field freq is set for all tree elements.
 * OUT assertions: the fields len and code are set to the optimal bit length
 *     and corresponding code. The length opt_len is updated; static_len is
 *     also updated if stree is not null. The field max_code is set.
 */
function build_tree(s, desc)
//    deflate_state *s;
//    tree_desc *desc; /* the tree descriptor */
{
  var tree     = desc.dyn_tree;
  var stree    = desc.stat_desc.static_tree;
  var has_stree = desc.stat_desc.has_stree;
  var elems    = desc.stat_desc.elems;
  var n, m;          /* iterate over heap elements */
  var max_code = -1; /* largest code with non zero frequency */
  var node;          /* new node being created */

  /* Construct the initial heap, with least frequent element in
   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
   * heap[0] is not used.
   */
  s.heap_len = 0;
  s.heap_max = HEAP_SIZE;

  for (n = 0; n < elems; n++) {
    if (tree[n * 2]/*.Freq*/ !== 0) {
      s.heap[++s.heap_len] = max_code = n;
      s.depth[n] = 0;

    } else {
      tree[n * 2 + 1]/*.Len*/ = 0;
    }
  }

  /* The pkzip format requires that at least one distance code exists,
   * and that at least one bit should be sent even if there is only one
   * possible code. So to avoid special checks later on we force at least
   * two codes of non zero frequency.
   */
  while (s.heap_len < 2) {
    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
    tree[node * 2]/*.Freq*/ = 1;
    s.depth[node] = 0;
    s.opt_len--;

    if (has_stree) {
      s.static_len -= stree[node * 2 + 1]/*.Len*/;
    }
    /* node is 0 or 1 so it does not have extra bits */
  }
  desc.max_code = max_code;

  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
   * establish sub-heaps of increasing lengths:
   */
  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }

  /* Construct the Huffman tree by repeatedly combining the least two
   * frequent nodes.
   */
  node = elems;              /* next internal node of the tree */
  do {
    //pqremove(s, tree, n);  /* n = node of least frequency */
    /*** pqremove ***/
    n = s.heap[1/*SMALLEST*/];
    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
    pqdownheap(s, tree, 1/*SMALLEST*/);
    /***/

    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */

    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
    s.heap[--s.heap_max] = m;

    /* Create a new node father of n and m */
    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;

    /* and insert the new node in the heap */
    s.heap[1/*SMALLEST*/] = node++;
    pqdownheap(s, tree, 1/*SMALLEST*/);

  } while (s.heap_len >= 2);

  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];

  /* At this point, the fields freq and dad are set. We can now
   * generate the bit lengths.
   */
  gen_bitlen(s, desc);

  /* The field len is now set, we can generate the bit codes */
  gen_codes(tree, max_code, s.bl_count);
}


/* ===========================================================================
 * Scan a literal or distance tree to determine the frequencies of the codes
 * in the bit length tree.
 */
function scan_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree;   /* the tree to be scanned */
//    int max_code;    /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }
  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      s.bl_tree[curlen * 2]/*.Freq*/ += count;

    } else if (curlen !== 0) {

      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;

    } else if (count <= 10) {
      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;

    } else {
      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;
    }

    count = 0;
    prevlen = curlen;

    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Send a literal or distance tree in compressed form, using the codes in
 * bl_tree.
 */
function send_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree; /* the tree to be scanned */
//    int max_code;       /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  /* tree[max_code+1].Len = -1; */  /* guard already set */
  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);

    } else if (curlen !== 0) {
      if (curlen !== prevlen) {
        send_code(s, curlen, s.bl_tree);
        count--;
      }
      //Assert(count >= 3 && count <= 6, " 3_6?");
      send_code(s, REP_3_6, s.bl_tree);
      send_bits(s, count - 3, 2);

    } else if (count <= 10) {
      send_code(s, REPZ_3_10, s.bl_tree);
      send_bits(s, count - 3, 3);

    } else {
      send_code(s, REPZ_11_138, s.bl_tree);
      send_bits(s, count - 11, 7);
    }

    count = 0;
    prevlen = curlen;
    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Construct the Huffman tree for the bit lengths and return the index in
 * bl_order of the last bit length code to send.
 */
function build_bl_tree(s) {
  var max_blindex;  /* index of last bit length code of non zero freq */

  /* Determine the bit length frequencies for literal and distance trees */
  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);

  /* Build the bit length tree: */
  build_tree(s, s.bl_desc);
  /* opt_len now includes the length of the tree representations, except
   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
   */

  /* Determine the number of bit length codes to send. The pkzip format
   * requires that at least 4 bit length codes be sent. (appnote.txt says
   * 3 but the actual value used is 4.)
   */
  for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {
    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {
      break;
    }
  }
  /* Update opt_len to include the bit length tree and counts */
  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
  //        s->opt_len, s->static_len));

  return max_blindex;
}


/* ===========================================================================
 * Send the header for a block using dynamic Huffman trees: the counts, the
 * lengths of the bit length codes, the literal tree and the distance tree.
 * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
 */
function send_all_trees(s, lcodes, dcodes, blcodes)
//    deflate_state *s;
//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
{
  var rank;                    /* index in bl_order */

  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
  //        "too many codes");
  //Tracev((stderr, "\nbl counts: "));
  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
  send_bits(s, dcodes - 1,   5);
  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */
  for (rank = 0; rank < blcodes; rank++) {
    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);
  }
  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */
  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */
  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}


/* ===========================================================================
 * Check if the data type is TEXT or BINARY, using the following algorithm:
 * - TEXT if the two conditions below are satisfied:
 *    a) There are no non-portable control characters belonging to the
 *       "black list" (0..6, 14..25, 28..31).
 *    b) There is at least one printable character belonging to the
 *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
 * - BINARY otherwise.
 * - The following partially-portable control characters form a
 *   "gray list" that is ignored in this detection algorithm:
 *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
 * IN assertion: the fields Freq of dyn_ltree are set.
 */
function detect_data_type(s) {
  /* black_mask is the bit mask of black-listed bytes
   * set bits 0..6, 14..25, and 28..31
   * 0xf3ffc07f = binary 11110011111111111100000001111111
   */
  var black_mask = 0xf3ffc07f;
  var n;

  /* Check for non-textual ("black-listed") bytes. */
  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
    if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {
      return Z_BINARY;
    }
  }

  /* Check for textual ("white-listed") bytes. */
  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
    return Z_TEXT;
  }
  for (n = 32; n < LITERALS; n++) {
    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
      return Z_TEXT;
    }
  }

  /* There are no "black-listed" or "white-listed" bytes:
   * this stream either is empty or has tolerated ("gray-listed") bytes only.
   */
  return Z_BINARY;
}


var static_init_done = false;

/* ===========================================================================
 * Initialize the tree data structures for a new zlib stream.
 */
function _tr_init(s)
{

  if (!static_init_done) {
    tr_static_init();
    static_init_done = true;
  }

  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);

  s.bi_buf = 0;
  s.bi_valid = 0;

  /* Initialize the first block of the first file: */
  init_block(s);
}


/* ===========================================================================
 * Send a stored block
 */
function _tr_stored_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */
  copy_block(s, buf, stored_len, true); /* with header */
}


/* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
 */
function _tr_align(s) {
  send_bits(s, STATIC_TREES << 1, 3);
  send_code(s, END_BLOCK, static_ltree);
  bi_flush(s);
}


/* ===========================================================================
 * Determine the best encoding for the current block: dynamic trees, static
 * trees or store, and output the encoded block to the zip file.
 */
function _tr_flush_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block, or NULL if too old */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
  var max_blindex = 0;        /* index of last bit length code of non zero freq */

  /* Build the Huffman trees unless a stored block is forced */
  if (s.level > 0) {

    /* Check if the file is binary or text */
    if (s.strm.data_type === Z_UNKNOWN) {
      s.strm.data_type = detect_data_type(s);
    }

    /* Construct the literal and distance trees */
    build_tree(s, s.l_desc);
    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));

    build_tree(s, s.d_desc);
    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));
    /* At this point, opt_len and static_len are the total bit lengths of
     * the compressed block data, excluding the tree representations.
     */

    /* Build the bit length tree for the above two trees, and get the index
     * in bl_order of the last bit length code to send.
     */
    max_blindex = build_bl_tree(s);

    /* Determine the best encoding. Compute the block lengths in bytes. */
    opt_lenb = (s.opt_len + 3 + 7) >>> 3;
    static_lenb = (s.static_len + 3 + 7) >>> 3;

    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
    //        s->last_lit));

    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }

  } else {
    // Assert(buf != (char*)0, "lost buf");
    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
  }

  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {
    /* 4: two words for the lengths */

    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
     * Otherwise we can't have processed more than WSIZE input bytes since
     * the last block flush, because compression would have been
     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
     * transform a block into a stored block.
     */
    _tr_stored_block(s, buf, stored_len, last);

  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {

    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);
    compress_block(s, static_ltree, static_dtree);

  } else {
    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);
    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);
    compress_block(s, s.dyn_ltree, s.dyn_dtree);
  }
  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
  /* The above check is made mod 2^32, for files larger than 512 MB
   * and uLong implemented on 32 bits.
   */
  init_block(s);

  if (last) {
    bi_windup(s);
  }
  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
  //       s->compressed_len-7*last));
}

/* ===========================================================================
 * Save the match info and tally the frequency counts. Return true if
 * the current block must be flushed.
 */
function _tr_tally(s, dist, lc)
//    deflate_state *s;
//    unsigned dist;  /* distance of matched string */
//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
{
  //var out_length, in_length, dcode;

  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;

  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
  s.last_lit++;

  if (dist === 0) {
    /* lc is the unmatched char */
    s.dyn_ltree[lc * 2]/*.Freq*/++;
  } else {
    s.matches++;
    /* Here, lc is the match length - MIN_MATCH */
    dist--;             /* dist = match distance - 1 */
    //Assert((ush)dist < (ush)MAX_DIST(s) &&
    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");

    s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++;
    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
  }

// (!) This block is disabled in zlib defaults,
// don't enable it for binary compatibility

//#ifdef TRUNCATE_BLOCK
//  /* Try to guess if it is profitable to stop the current block here */
//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
//    /* Compute an upper bound for the compressed length */
//    out_length = s.last_lit*8;
//    in_length = s.strstart - s.block_start;
//
//    for (dcode = 0; dcode < D_CODES; dcode++) {
//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
//    }
//    out_length >>>= 3;
//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
//    //       s->last_lit, in_length, out_length,
//    //       100L - out_length*100L/in_length));
//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
//      return true;
//    }
//  }
//#endif

  return (s.last_lit === s.lit_bufsize - 1);
  /* We avoid equality with lit_bufsize because of wraparound at 64K
   * on 16 bit machines and because stored blocks are restricted to
   * 64K-1 bytes.
   */
}

exports._tr_init  = _tr_init;
exports._tr_stored_block = _tr_stored_block;
exports._tr_flush_block  = _tr_flush_block;
exports._tr_tally = _tr_tally;
exports._tr_align = _tr_align;


/***/ }),
/* 400 */
/*!***********************************************!*\
  !*** ./node_modules/pako/lib/zlib/deflate.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils   = __webpack_require__(/*! ../utils/common */ 112);
var trees   = __webpack_require__(/*! ./trees */ 399);
var adler32 = __webpack_require__(/*! ./adler32 */ 218);
var crc32   = __webpack_require__(/*! ./crc32 */ 217);
var msg     = __webpack_require__(/*! ./messages */ 183);

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
var Z_NO_FLUSH      = 0;
var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
//var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
//var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
//var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;


/* compression levels */
//var Z_NO_COMPRESSION      = 0;
//var Z_BEST_SPEED          = 1;
//var Z_BEST_COMPRESSION    = 9;
var Z_DEFAULT_COMPRESSION = -1;


var Z_FILTERED            = 1;
var Z_HUFFMAN_ONLY        = 2;
var Z_RLE                 = 3;
var Z_FIXED               = 4;
var Z_DEFAULT_STRATEGY    = 0;

/* Possible values of the data_type field (though see inflate()) */
//var Z_BINARY              = 0;
//var Z_TEXT                = 1;
//var Z_ASCII               = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;


/* The deflate compression method */
var Z_DEFLATED  = 8;

/*============================================================================*/


var MAX_MEM_LEVEL = 9;
/* Maximum value for memLevel in deflateInit2 */
var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_MEM_LEVEL = 8;


var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */
var LITERALS      = 256;
/* number of literal bytes 0..255 */
var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */
var D_CODES       = 30;
/* number of distance codes */
var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */
var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */
var MAX_BITS  = 15;
/* All codes must not exceed MAX_BITS bits */

var MIN_MATCH = 3;
var MAX_MATCH = 258;
var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);

var PRESET_DICT = 0x20;

var INIT_STATE = 42;
var EXTRA_STATE = 69;
var NAME_STATE = 73;
var COMMENT_STATE = 91;
var HCRC_STATE = 103;
var BUSY_STATE = 113;
var FINISH_STATE = 666;

var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
var BS_BLOCK_DONE     = 2; /* block flush performed */
var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */

var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.

function err(strm, errorCode) {
  strm.msg = msg[errorCode];
  return errorCode;
}

function rank(f) {
  return ((f) << 1) - ((f) > 4 ? 9 : 0);
}

function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }


/* =========================================================================
 * Flush as much pending output as possible. All deflate() output goes
 * through this function so some applications may wish to modify it
 * to avoid allocating a large strm->output buffer and copying into it.
 * (See also read_buf()).
 */
function flush_pending(strm) {
  var s = strm.state;

  //_tr_flush_bits(s);
  var len = s.pending;
  if (len > strm.avail_out) {
    len = strm.avail_out;
  }
  if (len === 0) { return; }

  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
  strm.next_out += len;
  s.pending_out += len;
  strm.total_out += len;
  strm.avail_out -= len;
  s.pending -= len;
  if (s.pending === 0) {
    s.pending_out = 0;
  }
}


function flush_block_only(s, last) {
  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
  s.block_start = s.strstart;
  flush_pending(s.strm);
}


function put_byte(s, b) {
  s.pending_buf[s.pending++] = b;
}


/* =========================================================================
 * Put a short in the pending buffer. The 16-bit value is put in MSB order.
 * IN assertion: the stream state is correct and there is enough room in
 * pending_buf.
 */
function putShortMSB(s, b) {
//  put_byte(s, (Byte)(b >> 8));
//  put_byte(s, (Byte)(b & 0xff));
  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
  s.pending_buf[s.pending++] = b & 0xff;
}


/* ===========================================================================
 * Read a new buffer from the current input stream, update the adler32
 * and total number of bytes read.  All deflate() input goes through
 * this function so some applications may wish to modify it to avoid
 * allocating a large strm->input buffer and copying from it.
 * (See also flush_pending()).
 */
function read_buf(strm, buf, start, size) {
  var len = strm.avail_in;

  if (len > size) { len = size; }
  if (len === 0) { return 0; }

  strm.avail_in -= len;

  // zmemcpy(buf, strm->next_in, len);
  utils.arraySet(buf, strm.input, strm.next_in, len, start);
  if (strm.state.wrap === 1) {
    strm.adler = adler32(strm.adler, buf, len, start);
  }

  else if (strm.state.wrap === 2) {
    strm.adler = crc32(strm.adler, buf, len, start);
  }

  strm.next_in += len;
  strm.total_in += len;

  return len;
}


/* ===========================================================================
 * Set match_start to the longest match starting at the given string and
 * return its length. Matches shorter or equal to prev_length are discarded,
 * in which case the result is equal to prev_length and match_start is
 * garbage.
 * IN assertions: cur_match is the head of the hash chain for the current
 *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
 * OUT assertion: the match length is not greater than s->lookahead.
 */
function longest_match(s, cur_match) {
  var chain_length = s.max_chain_length;      /* max hash chain length */
  var scan = s.strstart; /* current string */
  var match;                       /* matched string */
  var len;                           /* length of current match */
  var best_len = s.prev_length;              /* best match length so far */
  var nice_match = s.nice_match;             /* stop if match long enough */
  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;

  var _win = s.window; // shortcut

  var wmask = s.w_mask;
  var prev  = s.prev;

  /* Stop when cur_match becomes <= limit. To simplify the code,
   * we prevent matches with the string of window index 0.
   */

  var strend = s.strstart + MAX_MATCH;
  var scan_end1  = _win[scan + best_len - 1];
  var scan_end   = _win[scan + best_len];

  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
   * It is easy to get rid of this optimization if necessary.
   */
  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

  /* Do not waste too much time if we already have a good match: */
  if (s.prev_length >= s.good_match) {
    chain_length >>= 2;
  }
  /* Do not look for matches beyond the end of the input. This is necessary
   * to make deflate deterministic.
   */
  if (nice_match > s.lookahead) { nice_match = s.lookahead; }

  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");

  do {
    // Assert(cur_match < s->strstart, "no future");
    match = cur_match;

    /* Skip to next match if the match length cannot increase
     * or if the match length is less than 2.  Note that the checks below
     * for insufficient lookahead only occur occasionally for performance
     * reasons.  Therefore uninitialized memory will be accessed, and
     * conditional jumps will be made that depend on those values.
     * However the length of the match is limited to the lookahead, so
     * the output of deflate is not affected by the uninitialized values.
     */

    if (_win[match + best_len]     !== scan_end  ||
        _win[match + best_len - 1] !== scan_end1 ||
        _win[match]                !== _win[scan] ||
        _win[++match]              !== _win[scan + 1]) {
      continue;
    }

    /* The check at best_len-1 can be removed because it will be made
     * again later. (This heuristic is not always a win.)
     * It is not necessary to compare scan[2] and match[2] since they
     * are always equal when the other bytes match, given that
     * the hash keys are equal and that HASH_BITS >= 8.
     */
    scan += 2;
    match++;
    // Assert(*scan == *match, "match[2]?");

    /* We check for insufficient lookahead only every 8th comparison;
     * the 256th check will be made at strstart+258.
     */
    do {
      /*jshint noempty:false*/
    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             scan < strend);

    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");

    len = MAX_MATCH - (strend - scan);
    scan = strend - MAX_MATCH;

    if (len > best_len) {
      s.match_start = cur_match;
      best_len = len;
      if (len >= nice_match) {
        break;
      }
      scan_end1  = _win[scan + best_len - 1];
      scan_end   = _win[scan + best_len];
    }
  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);

  if (best_len <= s.lookahead) {
    return best_len;
  }
  return s.lookahead;
}


/* ===========================================================================
 * Fill the window when the lookahead becomes insufficient.
 * Updates strstart and lookahead.
 *
 * IN assertion: lookahead < MIN_LOOKAHEAD
 * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
 *    At least one byte has been read, or avail_in == 0; reads are
 *    performed for at least two bytes (required for the zip translate_eol
 *    option -- not supported here).
 */
function fill_window(s) {
  var _w_size = s.w_size;
  var p, n, m, more, str;

  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");

  do {
    more = s.window_size - s.lookahead - s.strstart;

    // JS ints have 32 bit, block below not needed
    /* Deal with !@#$% 64K limit: */
    //if (sizeof(int) <= 2) {
    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
    //        more = wsize;
    //
    //  } else if (more == (unsigned)(-1)) {
    //        /* Very unlikely, but possible on 16 bit machine if
    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
    //         */
    //        more--;
    //    }
    //}


    /* If the window is almost full and there is insufficient lookahead,
     * move the upper half to the lower one to make room in the upper half.
     */
    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {

      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
      s.match_start -= _w_size;
      s.strstart -= _w_size;
      /* we now have strstart >= MAX_DIST */
      s.block_start -= _w_size;

      /* Slide the hash table (could be avoided with 32 bit values
       at the expense of memory usage). We slide even when level == 0
       to keep the hash table consistent if we switch back to level > 0
       later. (Using level 0 permanently is not an optimal usage of
       zlib, so we don't care about this pathological case.)
       */

      n = s.hash_size;
      p = n;
      do {
        m = s.head[--p];
        s.head[p] = (m >= _w_size ? m - _w_size : 0);
      } while (--n);

      n = _w_size;
      p = n;
      do {
        m = s.prev[--p];
        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
        /* If n is not on any hash chain, prev[n] is garbage but
         * its value will never be used.
         */
      } while (--n);

      more += _w_size;
    }
    if (s.strm.avail_in === 0) {
      break;
    }

    /* If there was no sliding:
     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
     *    more == window_size - lookahead - strstart
     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
     * => more >= window_size - 2*WSIZE + 2
     * In the BIG_MEM or MMAP case (not yet supported),
     *   window_size == input_size + MIN_LOOKAHEAD  &&
     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
     * Otherwise, window_size == 2*WSIZE so more >= 2.
     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
     */
    //Assert(more >= 2, "more < 2");
    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
    s.lookahead += n;

    /* Initialize the hash value now that we have some input: */
    if (s.lookahead + s.insert >= MIN_MATCH) {
      str = s.strstart - s.insert;
      s.ins_h = s.window[str];

      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
//#if MIN_MATCH != 3
//        Call update_hash() MIN_MATCH-3 more times
//#endif
      while (s.insert) {
        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

        s.prev[str & s.w_mask] = s.head[s.ins_h];
        s.head[s.ins_h] = str;
        str++;
        s.insert--;
        if (s.lookahead + s.insert < MIN_MATCH) {
          break;
        }
      }
    }
    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
     * but this is not important since only literal bytes will be emitted.
     */

  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);

  /* If the WIN_INIT bytes after the end of the current data have never been
   * written, then zero those bytes in order to avoid memory check reports of
   * the use of uninitialized (or uninitialised as Julian writes) bytes by
   * the longest match routines.  Update the high water mark for the next
   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
   */
//  if (s.high_water < s.window_size) {
//    var curr = s.strstart + s.lookahead;
//    var init = 0;
//
//    if (s.high_water < curr) {
//      /* Previous high water mark below current data -- zero WIN_INIT
//       * bytes or up to end of window, whichever is less.
//       */
//      init = s.window_size - curr;
//      if (init > WIN_INIT)
//        init = WIN_INIT;
//      zmemzero(s->window + curr, (unsigned)init);
//      s->high_water = curr + init;
//    }
//    else if (s->high_water < (ulg)curr + WIN_INIT) {
//      /* High water mark at or above current data, but below current data
//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
//       * to end of window, whichever is less.
//       */
//      init = (ulg)curr + WIN_INIT - s->high_water;
//      if (init > s->window_size - s->high_water)
//        init = s->window_size - s->high_water;
//      zmemzero(s->window + s->high_water, (unsigned)init);
//      s->high_water += init;
//    }
//  }
//
//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
//    "not enough room for search");
}

/* ===========================================================================
 * Copy without compression as much as possible from the input stream, return
 * the current block state.
 * This function does not insert new strings in the dictionary since
 * uncompressible data is probably not useful. This function is used
 * only for the level=0 compression option.
 * NOTE: this function should be optimized to avoid extra copying from
 * window to pending_buf.
 */
function deflate_stored(s, flush) {
  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
   * to pending_buf_size, and each stored block has a 5 byte header:
   */
  var max_block_size = 0xffff;

  if (max_block_size > s.pending_buf_size - 5) {
    max_block_size = s.pending_buf_size - 5;
  }

  /* Copy as much as possible from input to output: */
  for (;;) {
    /* Fill the window as much as possible: */
    if (s.lookahead <= 1) {

      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
      //  s->block_start >= (long)s->w_size, "slide too late");
//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
//        s.block_start >= s.w_size)) {
//        throw  new Error("slide too late");
//      }

      fill_window(s);
      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }

      if (s.lookahead === 0) {
        break;
      }
      /* flush the current block */
    }
    //Assert(s->block_start >= 0L, "block gone");
//    if (s.block_start < 0) throw new Error("block gone");

    s.strstart += s.lookahead;
    s.lookahead = 0;

    /* Emit a stored block if pending_buf will be full: */
    var max_start = s.block_start + max_block_size;

    if (s.strstart === 0 || s.strstart >= max_start) {
      /* strstart == 0 is possible when wraparound on 16-bit machine */
      s.lookahead = s.strstart - max_start;
      s.strstart = max_start;
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/


    }
    /* Flush if we may have to slide, otherwise block_start may become
     * negative and the data will be gone:
     */
    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }

  s.insert = 0;

  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }

  if (s.strstart > s.block_start) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_NEED_MORE;
}

/* ===========================================================================
 * Compress as much as possible from the input stream, return the current
 * block state.
 * This function does not perform lazy evaluation of matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
function deflate_fast(s, flush) {
  var hash_head;        /* head of the hash chain */
  var bflush;           /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) {
        break; /* flush the current block */
      }
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     * At this point we have always match_length < MIN_MATCH
     */
    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */
    }
    if (s.match_length >= MIN_MATCH) {
      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only

      /*** _tr_tally_dist(s, s.strstart - s.match_start,
                     s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;

      /* Insert new strings in the hash table only if the match length
       * is not too large. This saves time but degrades compression.
       */
      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
        s.match_length--; /* string at strstart already in table */
        do {
          s.strstart++;
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
           * always MIN_MATCH bytes ahead.
           */
        } while (--s.match_length !== 0);
        s.strstart++;
      } else
      {
        s.strstart += s.match_length;
        s.match_length = 0;
        s.ins_h = s.window[s.strstart];
        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;

//#if MIN_MATCH != 3
//                Call UPDATE_HASH() MIN_MATCH-3 more times
//#endif
        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
         * matter since it will be recomputed at next deflate call.
         */
      }
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s.window[s.strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * Same as above, but achieves better compression. We use a lazy
 * evaluation for matches: a match is finally adopted only if there is
 * no better match at the next window position.
 */
function deflate_slow(s, flush) {
  var hash_head;          /* head of hash chain */
  var bflush;              /* set if current block must be flushed */

  var max_insert;

  /* Process the input block. */
  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     */
    s.prev_length = s.match_length;
    s.prev_match = s.match_start;
    s.match_length = MIN_MATCH - 1;

    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */

      if (s.match_length <= 5 &&
         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {

        /* If prev_match is also MIN_MATCH, match_start is garbage
         * but we will ignore the current match anyway.
         */
        s.match_length = MIN_MATCH - 1;
      }
    }
    /* If there was a match at the previous step and the current
     * match is not better, output the previous match:
     */
    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
      max_insert = s.strstart + s.lookahead - MIN_MATCH;
      /* Do not insert strings in hash table beyond this. */

      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);

      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
                     s.prev_length - MIN_MATCH, bflush);***/
      bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
      /* Insert in hash table all strings up to the end of the match.
       * strstart-1 and strstart are already inserted. If there is not
       * enough lookahead, the last two strings are not inserted in
       * the hash table.
       */
      s.lookahead -= s.prev_length - 1;
      s.prev_length -= 2;
      do {
        if (++s.strstart <= max_insert) {
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
        }
      } while (--s.prev_length !== 0);
      s.match_available = 0;
      s.match_length = MIN_MATCH - 1;
      s.strstart++;

      if (bflush) {
        /*** FLUSH_BLOCK(s, 0); ***/
        flush_block_only(s, false);
        if (s.strm.avail_out === 0) {
          return BS_NEED_MORE;
        }
        /***/
      }

    } else if (s.match_available) {
      /* If there was no match at the previous position, output a
       * single literal. If there was a match but the current match
       * is longer, truncate the previous match to a single literal.
       */
      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

      if (bflush) {
        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
        flush_block_only(s, false);
        /***/
      }
      s.strstart++;
      s.lookahead--;
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
    } else {
      /* There is no previous match to compare with, wait for
       * the next step to decide.
       */
      s.match_available = 1;
      s.strstart++;
      s.lookahead--;
    }
  }
  //Assert (flush != Z_NO_FLUSH, "no flush?");
  if (s.match_available) {
    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

    s.match_available = 0;
  }
  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_BLOCK_DONE;
}


/* ===========================================================================
 * For Z_RLE, simply look for runs of bytes, generate matches only of distance
 * one.  Do not maintain a hash table.  (It will be regenerated if this run of
 * deflate switches away from Z_RLE.)
 */
function deflate_rle(s, flush) {
  var bflush;            /* set if current block must be flushed */
  var prev;              /* byte at distance one to match */
  var scan, strend;      /* scan goes up to strend for length of run */

  var _win = s.window;

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the longest run, plus one for the unrolled loop.
     */
    if (s.lookahead <= MAX_MATCH) {
      fill_window(s);
      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* See how many times the previous byte repeats */
    s.match_length = 0;
    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
      scan = s.strstart - 1;
      prev = _win[scan];
      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
        strend = s.strstart + MAX_MATCH;
        do {
          /*jshint noempty:false*/
        } while (prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 scan < strend);
        s.match_length = MAX_MATCH - (strend - scan);
        if (s.match_length > s.lookahead) {
          s.match_length = s.lookahead;
        }
      }
      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
    }

    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
    if (s.match_length >= MIN_MATCH) {
      //check_match(s, s.strstart, s.strstart - 1, s.match_length);

      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;
      s.strstart += s.match_length;
      s.match_length = 0;
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s->window[s->strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
 * (It will be regenerated if this run of deflate switches away from Huffman.)
 */
function deflate_huff(s, flush) {
  var bflush;             /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we have a literal to write. */
    if (s.lookahead === 0) {
      fill_window(s);
      if (s.lookahead === 0) {
        if (flush === Z_NO_FLUSH) {
          return BS_NEED_MORE;
        }
        break;      /* flush the current block */
      }
    }

    /* Output a literal byte */
    s.match_length = 0;
    //Tracevv((stderr,"%c", s->window[s->strstart]));
    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
    s.lookahead--;
    s.strstart++;
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* Values for max_lazy_match, good_match and max_chain_length, depending on
 * the desired pack level (0..9). The values given below have been tuned to
 * exclude worst case performance for pathological files. Better values may be
 * found for specific files.
 */
function Config(good_length, max_lazy, nice_length, max_chain, func) {
  this.good_length = good_length;
  this.max_lazy = max_lazy;
  this.nice_length = nice_length;
  this.max_chain = max_chain;
  this.func = func;
}

var configuration_table;

configuration_table = [
  /*      good lazy nice chain */
  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */

  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
];


/* ===========================================================================
 * Initialize the "longest match" routines for a new zlib stream
 */
function lm_init(s) {
  s.window_size = 2 * s.w_size;

  /*** CLEAR_HASH(s); ***/
  zero(s.head); // Fill with NIL (= 0);

  /* Set the default configuration parameters:
   */
  s.max_lazy_match = configuration_table[s.level].max_lazy;
  s.good_match = configuration_table[s.level].good_length;
  s.nice_match = configuration_table[s.level].nice_length;
  s.max_chain_length = configuration_table[s.level].max_chain;

  s.strstart = 0;
  s.block_start = 0;
  s.lookahead = 0;
  s.insert = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  s.ins_h = 0;
}


function DeflateState() {
  this.strm = null;            /* pointer back to this zlib stream */
  this.status = 0;            /* as the name implies */
  this.pending_buf = null;      /* output still pending */
  this.pending_buf_size = 0;  /* size of pending_buf */
  this.pending_out = 0;       /* next pending byte to output to the stream */
  this.pending = 0;           /* nb of bytes in the pending buffer */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.gzhead = null;         /* gzip header information to write */
  this.gzindex = 0;           /* where in extra, name, or comment */
  this.method = Z_DEFLATED; /* can only be DEFLATED */
  this.last_flush = -1;   /* value of flush param for previous deflate call */

  this.w_size = 0;  /* LZ77 window size (32K by default) */
  this.w_bits = 0;  /* log2(w_size)  (8..16) */
  this.w_mask = 0;  /* w_size - 1 */

  this.window = null;
  /* Sliding window. Input bytes are read into the second half of the window,
   * and move to the first half later to keep a dictionary of at least wSize
   * bytes. With this organization, matches are limited to a distance of
   * wSize-MAX_MATCH bytes, but this ensures that IO is always
   * performed with a length multiple of the block size.
   */

  this.window_size = 0;
  /* Actual size of window: 2*wSize, except when the user input buffer
   * is directly used as sliding window.
   */

  this.prev = null;
  /* Link to older string with same hash index. To limit the size of this
   * array to 64K, this link is maintained only for the last 32K strings.
   * An index in this array is thus a window index modulo 32K.
   */

  this.head = null;   /* Heads of the hash chains or NIL. */

  this.ins_h = 0;       /* hash index of string to be inserted */
  this.hash_size = 0;   /* number of elements in hash table */
  this.hash_bits = 0;   /* log2(hash_size) */
  this.hash_mask = 0;   /* hash_size-1 */

  this.hash_shift = 0;
  /* Number of bits by which ins_h must be shifted at each input
   * step. It must be such that after MIN_MATCH steps, the oldest
   * byte no longer takes part in the hash key, that is:
   *   hash_shift * MIN_MATCH >= hash_bits
   */

  this.block_start = 0;
  /* Window position at the beginning of the current output block. Gets
   * negative when the window is moved backwards.
   */

  this.match_length = 0;      /* length of best match */
  this.prev_match = 0;        /* previous match */
  this.match_available = 0;   /* set if previous match exists */
  this.strstart = 0;          /* start of string to insert */
  this.match_start = 0;       /* start of matching string */
  this.lookahead = 0;         /* number of valid bytes ahead in window */

  this.prev_length = 0;
  /* Length of the best match at previous step. Matches not greater than this
   * are discarded. This is used in the lazy match evaluation.
   */

  this.max_chain_length = 0;
  /* To speed up deflation, hash chains are never searched beyond this
   * length.  A higher limit improves compression ratio but degrades the
   * speed.
   */

  this.max_lazy_match = 0;
  /* Attempt to find a better match only when the current match is strictly
   * smaller than this value. This mechanism is used only for compression
   * levels >= 4.
   */
  // That's alias to max_lazy_match, don't use directly
  //this.max_insert_length = 0;
  /* Insert new strings in the hash table only if the match length is not
   * greater than this length. This saves time but degrades compression.
   * max_insert_length is used only for compression levels <= 3.
   */

  this.level = 0;     /* compression level (1..9) */
  this.strategy = 0;  /* favor or force Huffman coding*/

  this.good_match = 0;
  /* Use a faster search when the previous match is longer than this */

  this.nice_match = 0; /* Stop searching when current match exceeds this */

              /* used by trees.c: */

  /* Didn't use ct_data typedef below to suppress compiler warning */

  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */

  // Use flat array of DOUBLE size, with interleaved fata,
  // because JS does not support effective
  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
  this.dyn_dtree  = new utils.Buf16((2 * D_CODES + 1) * 2);
  this.bl_tree    = new utils.Buf16((2 * BL_CODES + 1) * 2);
  zero(this.dyn_ltree);
  zero(this.dyn_dtree);
  zero(this.bl_tree);

  this.l_desc   = null;         /* desc. for literal tree */
  this.d_desc   = null;         /* desc. for distance tree */
  this.bl_desc  = null;         /* desc. for bit length tree */

  //ush bl_count[MAX_BITS+1];
  this.bl_count = new utils.Buf16(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
  this.heap = new utils.Buf16(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
  zero(this.heap);

  this.heap_len = 0;               /* number of elements in the heap */
  this.heap_max = 0;               /* element of largest frequency */
  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
   * The same heap array is used to build all trees.
   */

  this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
  zero(this.depth);
  /* Depth of each subtree used as tie breaker for trees of equal frequency
   */

  this.l_buf = 0;          /* buffer index for literals or lengths */

  this.lit_bufsize = 0;
  /* Size of match buffer for literals/lengths.  There are 4 reasons for
   * limiting lit_bufsize to 64K:
   *   - frequencies can be kept in 16 bit counters
   *   - if compression is not successful for the first block, all input
   *     data is still in the window so we can still emit a stored block even
   *     when input comes from standard input.  (This can also be done for
   *     all blocks if lit_bufsize is not greater than 32K.)
   *   - if compression is not successful for a file smaller than 64K, we can
   *     even emit a stored file instead of a stored block (saving 5 bytes).
   *     This is applicable only for zip (not gzip or zlib).
   *   - creating new Huffman trees less frequently may not provide fast
   *     adaptation to changes in the input data statistics. (Take for
   *     example a binary file with poorly compressible code followed by
   *     a highly compressible string table.) Smaller buffer sizes give
   *     fast adaptation but have of course the overhead of transmitting
   *     trees more frequently.
   *   - I can't count above 4
   */

  this.last_lit = 0;      /* running index in l_buf */

  this.d_buf = 0;
  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
   * the same number of elements. To use different lengths, an extra flag
   * array would be necessary.
   */

  this.opt_len = 0;       /* bit length of current block with optimal trees */
  this.static_len = 0;    /* bit length of current block with static trees */
  this.matches = 0;       /* number of string matches in current block */
  this.insert = 0;        /* bytes at end of window left to insert */


  this.bi_buf = 0;
  /* Output buffer. bits are inserted starting at the bottom (least
   * significant bits).
   */
  this.bi_valid = 0;
  /* Number of valid bits in bi_buf.  All bits above the last valid bit
   * are always zero.
   */

  // Used for window memory init. We safely ignore it for JS. That makes
  // sense only for pointers and memory check tools.
  //this.high_water = 0;
  /* High water mark offset in window for initialized bytes -- bytes above
   * this are set to zero in order to avoid memory check warnings when
   * longest match routines access bytes past the input.  This is then
   * updated to the new high water mark.
   */
}


function deflateResetKeep(strm) {
  var s;

  if (!strm || !strm.state) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.total_in = strm.total_out = 0;
  strm.data_type = Z_UNKNOWN;

  s = strm.state;
  s.pending = 0;
  s.pending_out = 0;

  if (s.wrap < 0) {
    s.wrap = -s.wrap;
    /* was made negative by deflate(..., Z_FINISH); */
  }
  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
  strm.adler = (s.wrap === 2) ?
    0  // crc32(0, Z_NULL, 0)
  :
    1; // adler32(0, Z_NULL, 0)
  s.last_flush = Z_NO_FLUSH;
  trees._tr_init(s);
  return Z_OK;
}


function deflateReset(strm) {
  var ret = deflateResetKeep(strm);
  if (ret === Z_OK) {
    lm_init(strm.state);
  }
  return ret;
}


function deflateSetHeader(strm, head) {
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
  strm.state.gzhead = head;
  return Z_OK;
}


function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
  if (!strm) { // === Z_NULL
    return Z_STREAM_ERROR;
  }
  var wrap = 1;

  if (level === Z_DEFAULT_COMPRESSION) {
    level = 6;
  }

  if (windowBits < 0) { /* suppress zlib wrapper */
    wrap = 0;
    windowBits = -windowBits;
  }

  else if (windowBits > 15) {
    wrap = 2;           /* write gzip wrapper instead */
    windowBits -= 16;
  }


  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
    strategy < 0 || strategy > Z_FIXED) {
    return err(strm, Z_STREAM_ERROR);
  }


  if (windowBits === 8) {
    windowBits = 9;
  }
  /* until 256-byte window bug fixed */

  var s = new DeflateState();

  strm.state = s;
  s.strm = strm;

  s.wrap = wrap;
  s.gzhead = null;
  s.w_bits = windowBits;
  s.w_size = 1 << s.w_bits;
  s.w_mask = s.w_size - 1;

  s.hash_bits = memLevel + 7;
  s.hash_size = 1 << s.hash_bits;
  s.hash_mask = s.hash_size - 1;
  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);

  s.window = new utils.Buf8(s.w_size * 2);
  s.head = new utils.Buf16(s.hash_size);
  s.prev = new utils.Buf16(s.w_size);

  // Don't need mem init magic for JS.
  //s.high_water = 0;  /* nothing written to s->window yet */

  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */

  s.pending_buf_size = s.lit_bufsize * 4;

  //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
  //s->pending_buf = (uchf *) overlay;
  s.pending_buf = new utils.Buf8(s.pending_buf_size);

  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
  //s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
  s.d_buf = 1 * s.lit_bufsize;

  //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
  s.l_buf = (1 + 2) * s.lit_bufsize;

  s.level = level;
  s.strategy = strategy;
  s.method = method;

  return deflateReset(strm);
}

function deflateInit(strm, level) {
  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
}


function deflate(strm, flush) {
  var old_flush, s;
  var beg, val; // for gzip header write only

  if (!strm || !strm.state ||
    flush > Z_BLOCK || flush < 0) {
    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
  }

  s = strm.state;

  if (!strm.output ||
      (!strm.input && strm.avail_in !== 0) ||
      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
  }

  s.strm = strm; /* just in case */
  old_flush = s.last_flush;
  s.last_flush = flush;

  /* Write the header */
  if (s.status === INIT_STATE) {

    if (s.wrap === 2) { // GZIP header
      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
      put_byte(s, 31);
      put_byte(s, 139);
      put_byte(s, 8);
      if (!s.gzhead) { // s->gzhead == Z_NULL
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, OS_CODE);
        s.status = BUSY_STATE;
      }
      else {
        put_byte(s, (s.gzhead.text ? 1 : 0) +
                    (s.gzhead.hcrc ? 2 : 0) +
                    (!s.gzhead.extra ? 0 : 4) +
                    (!s.gzhead.name ? 0 : 8) +
                    (!s.gzhead.comment ? 0 : 16)
                );
        put_byte(s, s.gzhead.time & 0xff);
        put_byte(s, (s.gzhead.time >> 8) & 0xff);
        put_byte(s, (s.gzhead.time >> 16) & 0xff);
        put_byte(s, (s.gzhead.time >> 24) & 0xff);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, s.gzhead.os & 0xff);
        if (s.gzhead.extra && s.gzhead.extra.length) {
          put_byte(s, s.gzhead.extra.length & 0xff);
          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
        }
        if (s.gzhead.hcrc) {
          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
        }
        s.gzindex = 0;
        s.status = EXTRA_STATE;
      }
    }
    else // DEFLATE header
    {
      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
      var level_flags = -1;

      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
        level_flags = 0;
      } else if (s.level < 6) {
        level_flags = 1;
      } else if (s.level === 6) {
        level_flags = 2;
      } else {
        level_flags = 3;
      }
      header |= (level_flags << 6);
      if (s.strstart !== 0) { header |= PRESET_DICT; }
      header += 31 - (header % 31);

      s.status = BUSY_STATE;
      putShortMSB(s, header);

      /* Save the adler32 of the preset dictionary: */
      if (s.strstart !== 0) {
        putShortMSB(s, strm.adler >>> 16);
        putShortMSB(s, strm.adler & 0xffff);
      }
      strm.adler = 1; // adler32(0L, Z_NULL, 0);
    }
  }

//#ifdef GZIP
  if (s.status === EXTRA_STATE) {
    if (s.gzhead.extra/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */

      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            break;
          }
        }
        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
        s.gzindex++;
      }
      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (s.gzindex === s.gzhead.extra.length) {
        s.gzindex = 0;
        s.status = NAME_STATE;
      }
    }
    else {
      s.status = NAME_STATE;
    }
  }
  if (s.status === NAME_STATE) {
    if (s.gzhead.name/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.name.length) {
          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.gzindex = 0;
        s.status = COMMENT_STATE;
      }
    }
    else {
      s.status = COMMENT_STATE;
    }
  }
  if (s.status === COMMENT_STATE) {
    if (s.gzhead.comment/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.comment.length) {
          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.status = HCRC_STATE;
      }
    }
    else {
      s.status = HCRC_STATE;
    }
  }
  if (s.status === HCRC_STATE) {
    if (s.gzhead.hcrc) {
      if (s.pending + 2 > s.pending_buf_size) {
        flush_pending(strm);
      }
      if (s.pending + 2 <= s.pending_buf_size) {
        put_byte(s, strm.adler & 0xff);
        put_byte(s, (strm.adler >> 8) & 0xff);
        strm.adler = 0; //crc32(0L, Z_NULL, 0);
        s.status = BUSY_STATE;
      }
    }
    else {
      s.status = BUSY_STATE;
    }
  }
//#endif

  /* Flush as much pending output as possible */
  if (s.pending !== 0) {
    flush_pending(strm);
    if (strm.avail_out === 0) {
      /* Since avail_out is 0, deflate will be called again with
       * more output space, but possibly with both pending and
       * avail_in equal to zero. There won't be anything to do,
       * but this is not an error situation so make sure we
       * return OK instead of BUF_ERROR at next call of deflate:
       */
      s.last_flush = -1;
      return Z_OK;
    }

    /* Make sure there is something to do and avoid duplicate consecutive
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
    flush !== Z_FINISH) {
    return err(strm, Z_BUF_ERROR);
  }

  /* User must not provide more input after the first FINISH: */
  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
    return err(strm, Z_BUF_ERROR);
  }

  /* Start a new block or continue the current one.
   */
  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
        configuration_table[s.level].func(s, flush));

    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
      s.status = FINISH_STATE;
    }
    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
      if (strm.avail_out === 0) {
        s.last_flush = -1;
        /* avoid BUF_ERROR next call, see above */
      }
      return Z_OK;
      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
       * of deflate should use the same flush parameter to make sure
       * that the flush is complete. So we don't have to output an
       * empty block here, this will be done at next call. This also
       * ensures that for a very small output buffer, we emit at most
       * one empty block.
       */
    }
    if (bstate === BS_BLOCK_DONE) {
      if (flush === Z_PARTIAL_FLUSH) {
        trees._tr_align(s);
      }
      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */

        trees._tr_stored_block(s, 0, 0, false);
        /* For a full flush, this empty block will be recognized
         * as a special marker by inflate_sync().
         */
        if (flush === Z_FULL_FLUSH) {
          /*** CLEAR_HASH(s); ***/             /* forget history */
          zero(s.head); // Fill with NIL (= 0);

          if (s.lookahead === 0) {
            s.strstart = 0;
            s.block_start = 0;
            s.insert = 0;
          }
        }
      }
      flush_pending(strm);
      if (strm.avail_out === 0) {
        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
        return Z_OK;
      }
    }
  }
  //Assert(strm->avail_out > 0, "bug2");
  //if (strm.avail_out <= 0) { throw new Error("bug2");}

  if (flush !== Z_FINISH) { return Z_OK; }
  if (s.wrap <= 0) { return Z_STREAM_END; }

  /* Write the trailer */
  if (s.wrap === 2) {
    put_byte(s, strm.adler & 0xff);
    put_byte(s, (strm.adler >> 8) & 0xff);
    put_byte(s, (strm.adler >> 16) & 0xff);
    put_byte(s, (strm.adler >> 24) & 0xff);
    put_byte(s, strm.total_in & 0xff);
    put_byte(s, (strm.total_in >> 8) & 0xff);
    put_byte(s, (strm.total_in >> 16) & 0xff);
    put_byte(s, (strm.total_in >> 24) & 0xff);
  }
  else
  {
    putShortMSB(s, strm.adler >>> 16);
    putShortMSB(s, strm.adler & 0xffff);
  }

  flush_pending(strm);
  /* If avail_out is zero, the application will call deflate again
   * to flush the rest.
   */
  if (s.wrap > 0) { s.wrap = -s.wrap; }
  /* write the trailer only once! */
  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
}

function deflateEnd(strm) {
  var status;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  status = strm.state.status;
  if (status !== INIT_STATE &&
    status !== EXTRA_STATE &&
    status !== NAME_STATE &&
    status !== COMMENT_STATE &&
    status !== HCRC_STATE &&
    status !== BUSY_STATE &&
    status !== FINISH_STATE
  ) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.state = null;

  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
}


/* =========================================================================
 * Initializes the compression dictionary from the given byte
 * sequence without producing any compressed output.
 */
function deflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var s;
  var str, n;
  var wrap;
  var avail;
  var next;
  var input;
  var tmpDict;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  s = strm.state;
  wrap = s.wrap;

  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
    return Z_STREAM_ERROR;
  }

  /* when using zlib wrappers, compute Adler-32 for provided dictionary */
  if (wrap === 1) {
    /* adler32(strm->adler, dictionary, dictLength); */
    strm.adler = adler32(strm.adler, dictionary, dictLength, 0);
  }

  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */

  /* if dictionary would fill window, just replace the history */
  if (dictLength >= s.w_size) {
    if (wrap === 0) {            /* already empty otherwise */
      /*** CLEAR_HASH(s); ***/
      zero(s.head); // Fill with NIL (= 0);
      s.strstart = 0;
      s.block_start = 0;
      s.insert = 0;
    }
    /* use the tail */
    // dictionary = dictionary.slice(dictLength - s.w_size);
    tmpDict = new utils.Buf8(s.w_size);
    utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);
    dictionary = tmpDict;
    dictLength = s.w_size;
  }
  /* insert dictionary into window and hash */
  avail = strm.avail_in;
  next = strm.next_in;
  input = strm.input;
  strm.avail_in = dictLength;
  strm.next_in = 0;
  strm.input = dictionary;
  fill_window(s);
  while (s.lookahead >= MIN_MATCH) {
    str = s.strstart;
    n = s.lookahead - (MIN_MATCH - 1);
    do {
      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

      s.prev[str & s.w_mask] = s.head[s.ins_h];

      s.head[s.ins_h] = str;
      str++;
    } while (--n);
    s.strstart = str;
    s.lookahead = MIN_MATCH - 1;
    fill_window(s);
  }
  s.strstart += s.lookahead;
  s.block_start = s.strstart;
  s.insert = s.lookahead;
  s.lookahead = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  strm.next_in = next;
  strm.input = input;
  strm.avail_in = avail;
  s.wrap = wrap;
  return Z_OK;
}


exports.deflateInit = deflateInit;
exports.deflateInit2 = deflateInit2;
exports.deflateReset = deflateReset;
exports.deflateResetKeep = deflateResetKeep;
exports.deflateSetHeader = deflateSetHeader;
exports.deflate = deflate;
exports.deflateEnd = deflateEnd;
exports.deflateSetDictionary = deflateSetDictionary;
exports.deflateInfo = 'pako deflate (from Nodeca project)';

/* Not implemented
exports.deflateBound = deflateBound;
exports.deflateCopy = deflateCopy;
exports.deflateParams = deflateParams;
exports.deflatePending = deflatePending;
exports.deflatePrime = deflatePrime;
exports.deflateTune = deflateTune;
*/


/***/ }),
/* 401 */
/*!******************************************!*\
  !*** ./node_modules/pako/lib/deflate.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";



var zlib_deflate = __webpack_require__(/*! ./zlib/deflate */ 400);
var utils        = __webpack_require__(/*! ./utils/common */ 112);
var strings      = __webpack_require__(/*! ./utils/strings */ 216);
var msg          = __webpack_require__(/*! ./zlib/messages */ 183);
var ZStream      = __webpack_require__(/*! ./zlib/zstream */ 215);

var toString = Object.prototype.toString;

/* Public constants ==========================================================*/
/* ===========================================================================*/

var Z_NO_FLUSH      = 0;
var Z_FINISH        = 4;

var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_SYNC_FLUSH    = 2;

var Z_DEFAULT_COMPRESSION = -1;

var Z_DEFAULT_STRATEGY    = 0;

var Z_DEFLATED  = 8;

/* ===========================================================================*/


/**
 * class Deflate
 *
 * Generic JS-style wrapper for zlib calls. If you don't need
 * streaming behaviour - use more simple functions: [[deflate]],
 * [[deflateRaw]] and [[gzip]].
 **/

/* internal
 * Deflate.chunks -> Array
 *
 * Chunks of output data, if [[Deflate#onData]] not overridden.
 **/

/**
 * Deflate.result -> Uint8Array|Array
 *
 * Compressed result, generated by default [[Deflate#onData]]
 * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
 * (call [[Deflate#push]] with `Z_FINISH` / `true` param)  or if you
 * push a chunk with explicit flush (call [[Deflate#push]] with
 * `Z_SYNC_FLUSH` param).
 **/

/**
 * Deflate.err -> Number
 *
 * Error code after deflate finished. 0 (Z_OK) on success.
 * You will not need it in real life, because deflate errors
 * are possible only on wrong options or bad `onData` / `onEnd`
 * custom handlers.
 **/

/**
 * Deflate.msg -> String
 *
 * Error message, if [[Deflate.err]] != 0
 **/


/**
 * new Deflate(options)
 * - options (Object): zlib deflate options.
 *
 * Creates new deflator instance with specified params. Throws exception
 * on bad params. Supported options:
 *
 * - `level`
 * - `windowBits`
 * - `memLevel`
 * - `strategy`
 * - `dictionary`
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information on these.
 *
 * Additional options, for internal needs:
 *
 * - `chunkSize` - size of generated data chunks (16K by default)
 * - `raw` (Boolean) - do raw deflate
 * - `gzip` (Boolean) - create gzip wrapper
 * - `to` (String) - if equal to 'string', then result will be "binary string"
 *    (each char code [0..255])
 * - `header` (Object) - custom header for gzip
 *   - `text` (Boolean) - true if compressed data believed to be text
 *   - `time` (Number) - modification time, unix timestamp
 *   - `os` (Number) - operation system code
 *   - `extra` (Array) - array of bytes with extra data (max 65536)
 *   - `name` (String) - file name (binary string)
 *   - `comment` (String) - comment (binary string)
 *   - `hcrc` (Boolean) - true if header crc should be added
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
 *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
 *
 * var deflate = new pako.Deflate({ level: 3});
 *
 * deflate.push(chunk1, false);
 * deflate.push(chunk2, true);  // true -> last chunk
 *
 * if (deflate.err) { throw new Error(deflate.err); }
 *
 * console.log(deflate.result);
 * ```
 **/
function Deflate(options) {
  if (!(this instanceof Deflate)) return new Deflate(options);

  this.options = utils.assign({
    level: Z_DEFAULT_COMPRESSION,
    method: Z_DEFLATED,
    chunkSize: 16384,
    windowBits: 15,
    memLevel: 8,
    strategy: Z_DEFAULT_STRATEGY,
    to: ''
  }, options || {});

  var opt = this.options;

  if (opt.raw && (opt.windowBits > 0)) {
    opt.windowBits = -opt.windowBits;
  }

  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {
    opt.windowBits += 16;
  }

  this.err    = 0;      // error code, if happens (0 = Z_OK)
  this.msg    = '';     // error message
  this.ended  = false;  // used to avoid multiple onEnd() calls
  this.chunks = [];     // chunks of compressed data

  this.strm = new ZStream();
  this.strm.avail_out = 0;

  var status = zlib_deflate.deflateInit2(
    this.strm,
    opt.level,
    opt.method,
    opt.windowBits,
    opt.memLevel,
    opt.strategy
  );

  if (status !== Z_OK) {
    throw new Error(msg[status]);
  }

  if (opt.header) {
    zlib_deflate.deflateSetHeader(this.strm, opt.header);
  }

  if (opt.dictionary) {
    var dict;
    // Convert data if needed
    if (typeof opt.dictionary === 'string') {
      // If we need to compress text, change encoding to utf8.
      dict = strings.string2buf(opt.dictionary);
    } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {
      dict = new Uint8Array(opt.dictionary);
    } else {
      dict = opt.dictionary;
    }

    status = zlib_deflate.deflateSetDictionary(this.strm, dict);

    if (status !== Z_OK) {
      throw new Error(msg[status]);
    }

    this._dict_set = true;
  }
}

/**
 * Deflate#push(data[, mode]) -> Boolean
 * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be
 *   converted to utf8 byte sequence.
 * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
 *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
 *
 * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
 * new compressed chunks. Returns `true` on success. The last data block must have
 * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
 * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you
 * can use mode Z_SYNC_FLUSH, keeping the compression context.
 *
 * On fail call [[Deflate#onEnd]] with error code and return false.
 *
 * We strongly recommend to use `Uint8Array` on input for best speed (output
 * array format is detected automatically). Also, don't skip last param and always
 * use the same type in your code (boolean or number). That will improve JS speed.
 *
 * For regular `Array`-s make sure all elements are [0..255].
 *
 * ##### Example
 *
 * ```javascript
 * push(chunk, false); // push one of data chunks
 * ...
 * push(chunk, true);  // push last chunk
 * ```
 **/
Deflate.prototype.push = function (data, mode) {
  var strm = this.strm;
  var chunkSize = this.options.chunkSize;
  var status, _mode;

  if (this.ended) { return false; }

  _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);

  // Convert data if needed
  if (typeof data === 'string') {
    // If we need to compress text, change encoding to utf8.
    strm.input = strings.string2buf(data);
  } else if (toString.call(data) === '[object ArrayBuffer]') {
    strm.input = new Uint8Array(data);
  } else {
    strm.input = data;
  }

  strm.next_in = 0;
  strm.avail_in = strm.input.length;

  do {
    if (strm.avail_out === 0) {
      strm.output = new utils.Buf8(chunkSize);
      strm.next_out = 0;
      strm.avail_out = chunkSize;
    }
    status = zlib_deflate.deflate(strm, _mode);    /* no bad return value */

    if (status !== Z_STREAM_END && status !== Z_OK) {
      this.onEnd(status);
      this.ended = true;
      return false;
    }
    if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {
      if (this.options.to === 'string') {
        this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));
      } else {
        this.onData(utils.shrinkBuf(strm.output, strm.next_out));
      }
    }
  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);

  // Finalize on the last chunk.
  if (_mode === Z_FINISH) {
    status = zlib_deflate.deflateEnd(this.strm);
    this.onEnd(status);
    this.ended = true;
    return status === Z_OK;
  }

  // callback interim results if Z_SYNC_FLUSH.
  if (_mode === Z_SYNC_FLUSH) {
    this.onEnd(Z_OK);
    strm.avail_out = 0;
    return true;
  }

  return true;
};


/**
 * Deflate#onData(chunk) -> Void
 * - chunk (Uint8Array|Array|String): output data. Type of array depends
 *   on js engine support. When string output requested, each chunk
 *   will be string.
 *
 * By default, stores data blocks in `chunks[]` property and glue
 * those in `onEnd`. Override this handler, if you need another behaviour.
 **/
Deflate.prototype.onData = function (chunk) {
  this.chunks.push(chunk);
};


/**
 * Deflate#onEnd(status) -> Void
 * - status (Number): deflate status. 0 (Z_OK) on success,
 *   other if not.
 *
 * Called once after you tell deflate that the input stream is
 * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
 * or if an error happened. By default - join collected chunks,
 * free memory and fill `results` / `err` properties.
 **/
Deflate.prototype.onEnd = function (status) {
  // On success - join
  if (status === Z_OK) {
    if (this.options.to === 'string') {
      this.result = this.chunks.join('');
    } else {
      this.result = utils.flattenChunks(this.chunks);
    }
  }
  this.chunks = [];
  this.err = status;
  this.msg = this.strm.msg;
};


/**
 * deflate(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to compress.
 * - options (Object): zlib deflate options.
 *
 * Compress `data` with deflate algorithm and `options`.
 *
 * Supported options are:
 *
 * - level
 * - windowBits
 * - memLevel
 * - strategy
 * - dictionary
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information on these.
 *
 * Sugar (options):
 *
 * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
 *   negative windowBits implicitly.
 * - `to` (String) - if equal to 'string', then result will be "binary string"
 *    (each char code [0..255])
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , data = Uint8Array([1,2,3,4,5,6,7,8,9]);
 *
 * console.log(pako.deflate(data));
 * ```
 **/
function deflate(input, options) {
  var deflator = new Deflate(options);

  deflator.push(input, true);

  // That will never happens, if you don't cheat with options :)
  if (deflator.err) { throw deflator.msg || msg[deflator.err]; }

  return deflator.result;
}


/**
 * deflateRaw(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to compress.
 * - options (Object): zlib deflate options.
 *
 * The same as [[deflate]], but creates raw data, without wrapper
 * (header and adler32 crc).
 **/
function deflateRaw(input, options) {
  options = options || {};
  options.raw = true;
  return deflate(input, options);
}


/**
 * gzip(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to compress.
 * - options (Object): zlib deflate options.
 *
 * The same as [[deflate]], but create gzip wrapper instead of
 * deflate one.
 **/
function gzip(input, options) {
  options = options || {};
  options.gzip = true;
  return deflate(input, options);
}


exports.Deflate = Deflate;
exports.deflate = deflate;
exports.deflateRaw = deflateRaw;
exports.gzip = gzip;


/***/ }),
/* 402 */
/*!************************************!*\
  !*** ./node_modules/pako/index.js ***!
  \************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
// Top level file is just a mixin of submodules & constants


var assign    = __webpack_require__(/*! ./lib/utils/common */ 112).assign;

var deflate   = __webpack_require__(/*! ./lib/deflate */ 401);
var inflate   = __webpack_require__(/*! ./lib/inflate */ 398);
var constants = __webpack_require__(/*! ./lib/zlib/constants */ 214);

var pako = {};

assign(pako, deflate, inflate, constants);

module.exports = pako;


/***/ }),
/* 403 */
/*!*****************************************!*\
  !*** ./node_modules/jszip/lib/flate.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var USE_TYPEDARRAY = (typeof Uint8Array !== 'undefined') && (typeof Uint16Array !== 'undefined') && (typeof Uint32Array !== 'undefined');

var pako = __webpack_require__(/*! pako */ 402);
var utils = __webpack_require__(/*! ./utils */ 60);
var GenericWorker = __webpack_require__(/*! ./stream/GenericWorker */ 90);

var ARRAY_TYPE = USE_TYPEDARRAY ? "uint8array" : "array";

exports.magic = "\x08\x00";

/**
 * Create a worker that uses pako to inflate/deflate.
 * @constructor
 * @param {String} action the name of the pako function to call : either "Deflate" or "Inflate".
 * @param {Object} options the options to use when (de)compressing.
 */
function FlateWorker(action, options) {
    GenericWorker.call(this, "FlateWorker/" + action);

    this._pako = null;
    this._pakoAction = action;
    this._pakoOptions = options;
    // the `meta` object from the last chunk received
    // this allow this worker to pass around metadata
    this.meta = {};
}

utils.inherits(FlateWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
FlateWorker.prototype.processChunk = function (chunk) {
    this.meta = chunk.meta;
    if (this._pako === null) {
        this._createPako();
    }
    this._pako.push(utils.transformTo(ARRAY_TYPE, chunk.data), false);
};

/**
 * @see GenericWorker.flush
 */
FlateWorker.prototype.flush = function () {
    GenericWorker.prototype.flush.call(this);
    if (this._pako === null) {
        this._createPako();
    }
    this._pako.push([], true);
};
/**
 * @see GenericWorker.cleanUp
 */
FlateWorker.prototype.cleanUp = function () {
    GenericWorker.prototype.cleanUp.call(this);
    this._pako = null;
};

/**
 * Create the _pako object.
 * TODO: lazy-loading this object isn't the best solution but it's the
 * quickest. The best solution is to lazy-load the worker list. See also the
 * issue #446.
 */
FlateWorker.prototype._createPako = function () {
    this._pako = new pako[this._pakoAction]({
        raw: true,
        level: this._pakoOptions.level || -1 // default compression
    });
    var self = this;
    this._pako.onData = function(data) {
        self.push({
            data : data,
            meta : self.meta
        });
    };
};

exports.compressWorker = function (compressionOptions) {
    return new FlateWorker("Deflate", compressionOptions);
};
exports.uncompressWorker = function () {
    return new FlateWorker("Inflate", {});
};


/***/ }),
/* 404 */
/*!**************************************************!*\
  !*** ./node_modules/jszip/lib/generate/index.js ***!
  \**************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var compressions = __webpack_require__(/*! ../compressions */ 219);
var ZipFileWorker = __webpack_require__(/*! ./ZipFileWorker */ 393);

/**
 * Find the compression to use.
 * @param {String} fileCompression the compression defined at the file level, if any.
 * @param {String} zipCompression the compression defined at the load() level.
 * @return {Object} the compression object to use.
 */
var getCompression = function (fileCompression, zipCompression) {

    var compressionName = fileCompression || zipCompression;
    var compression = compressions[compressionName];
    if (!compression) {
        throw new Error(compressionName + " is not a valid compression method !");
    }
    return compression;
};

/**
 * Create a worker to generate a zip file.
 * @param {JSZip} zip the JSZip instance at the right root level.
 * @param {Object} options to generate the zip file.
 * @param {String} comment the comment to use.
 */
exports.generateWorker = function (zip, options, comment) {

    var zipFileWorker = new ZipFileWorker(options.streamFiles, comment, options.platform, options.encodeFileName);
    var entriesCount = 0;
    try {

        zip.forEach(function (relativePath, file) {
            entriesCount++;
            var compression = getCompression(file.options.compression, options.compression);
            var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};
            var dir = file.dir, date = file.date;

            file._compressWorker(compression, compressionOptions)
            .withStreamInfo("file", {
                name : relativePath,
                dir : dir,
                date : date,
                comment : file.comment || "",
                unixPermissions : file.unixPermissions,
                dosPermissions : file.dosPermissions
            })
            .pipe(zipFileWorker);
        });
        zipFileWorker.entriesCount = entriesCount;
    } catch (e) {
        zipFileWorker.error(e);
    }

    return zipFileWorker;
};


/***/ }),
/* 405 */
/*!*********************************************!*\
  !*** ./node_modules/jszip/lib/zipObject.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var StreamHelper = __webpack_require__(/*! ./stream/StreamHelper */ 224);
var DataWorker = __webpack_require__(/*! ./stream/DataWorker */ 222);
var utf8 = __webpack_require__(/*! ./utf8 */ 132);
var CompressedObject = __webpack_require__(/*! ./compressedObject */ 185);
var GenericWorker = __webpack_require__(/*! ./stream/GenericWorker */ 90);

/**
 * A simple object representing a file in the zip file.
 * @constructor
 * @param {string} name the name of the file
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data
 * @param {Object} options the options of the file
 */
var ZipObject = function(name, data, options) {
    this.name = name;
    this.dir = options.dir;
    this.date = options.date;
    this.comment = options.comment;
    this.unixPermissions = options.unixPermissions;
    this.dosPermissions = options.dosPermissions;

    this._data = data;
    this._dataBinary = options.binary;
    // keep only the compression
    this.options = {
        compression : options.compression,
        compressionOptions : options.compressionOptions
    };
};

ZipObject.prototype = {
    /**
     * Create an internal stream for the content of this object.
     * @param {String} type the type of each chunk.
     * @return StreamHelper the stream.
     */
    internalStream: function (type) {
        var result = null, outputType = "string";
        try {
            if (!type) {
                throw new Error("No output type specified.");
            }
            outputType = type.toLowerCase();
            var askUnicodeString = outputType === "string" || outputType === "text";
            if (outputType === "binarystring" || outputType === "text") {
                outputType = "string";
            }
            result = this._decompressWorker();

            var isUnicodeString = !this._dataBinary;

            if (isUnicodeString && !askUnicodeString) {
                result = result.pipe(new utf8.Utf8EncodeWorker());
            }
            if (!isUnicodeString && askUnicodeString) {
                result = result.pipe(new utf8.Utf8DecodeWorker());
            }
        } catch (e) {
            result = new GenericWorker("error");
            result.error(e);
        }

        return new StreamHelper(result, outputType, "");
    },

    /**
     * Prepare the content in the asked type.
     * @param {String} type the type of the result.
     * @param {Function} onUpdate a function to call on each internal update.
     * @return Promise the promise of the result.
     */
    async: function (type, onUpdate) {
        return this.internalStream(type).accumulate(onUpdate);
    },

    /**
     * Prepare the content as a nodejs stream.
     * @param {String} type the type of each chunk.
     * @param {Function} onUpdate a function to call on each internal update.
     * @return Stream the stream.
     */
    nodeStream: function (type, onUpdate) {
        return this.internalStream(type || "nodebuffer").toNodejsStream(onUpdate);
    },

    /**
     * Return a worker for the compressed content.
     * @private
     * @param {Object} compression the compression object to use.
     * @param {Object} compressionOptions the options to use when compressing.
     * @return Worker the worker.
     */
    _compressWorker: function (compression, compressionOptions) {
        if (
            this._data instanceof CompressedObject &&
            this._data.compression.magic === compression.magic
        ) {
            return this._data.getCompressedWorker();
        } else {
            var result = this._decompressWorker();
            if(!this._dataBinary) {
                result = result.pipe(new utf8.Utf8EncodeWorker());
            }
            return CompressedObject.createWorkerFrom(result, compression, compressionOptions);
        }
    },
    /**
     * Return a worker for the decompressed content.
     * @private
     * @return Worker the worker.
     */
    _decompressWorker : function () {
        if (this._data instanceof CompressedObject) {
            return this._data.getContentWorker();
        } else if (this._data instanceof GenericWorker) {
            return this._data;
        } else {
            return new DataWorker(this._data);
        }
    }
};

var removedMethods = ["asText", "asBinary", "asNodeBuffer", "asUint8Array", "asArrayBuffer"];
var removedFn = function () {
    throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
};

for(var i = 0; i < removedMethods.length; i++) {
    ZipObject.prototype[removedMethods[i]] = removedFn;
}
module.exports = ZipObject;


/***/ }),
/* 406 */
/*!********************************************************************!*\
  !*** ./node_modules/jszip/lib/nodejs/NodejsStreamOutputAdapter.js ***!
  \********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var Readable = __webpack_require__(/*! readable-stream */ 235).Readable;

var utils = __webpack_require__(/*! ../utils */ 60);
utils.inherits(NodejsStreamOutputAdapter, Readable);

/**
* A nodejs stream using a worker as source.
* @see the SourceWrapper in http://nodejs.org/api/stream.html
* @constructor
* @param {StreamHelper} helper the helper wrapping the worker
* @param {Object} options the nodejs stream options
* @param {Function} updateCb the update callback.
*/
function NodejsStreamOutputAdapter(helper, options, updateCb) {
    Readable.call(this, options);
    this._helper = helper;

    var self = this;
    helper.on("data", function (data, meta) {
        if (!self.push(data)) {
            self._helper.pause();
        }
        if(updateCb) {
            updateCb(meta);
        }
    })
    .on("error", function(e) {
        self.emit('error', e);
    })
    .on("end", function () {
        self.push(null);
    });
}


NodejsStreamOutputAdapter.prototype._read = function() {
    this._helper.resume();
};

module.exports = NodejsStreamOutputAdapter;


/***/ }),
/* 407 */
/*!********************************************************!*\
  !*** ./node_modules/jszip/lib/stream/ConvertWorker.js ***!
  \********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var GenericWorker = __webpack_require__(/*! ./GenericWorker */ 90);
var utils = __webpack_require__(/*! ../utils */ 60);

/**
 * A worker which convert chunks to a specified type.
 * @constructor
 * @param {String} destType the destination type.
 */
function ConvertWorker(destType) {
    GenericWorker.call(this, "ConvertWorker to " + destType);
    this.destType = destType;
}
utils.inherits(ConvertWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
ConvertWorker.prototype.processChunk = function (chunk) {
    this.push({
        data : utils.transformTo(this.destType, chunk.data),
        meta : chunk.meta
    });
};
module.exports = ConvertWorker;


/***/ }),
/* 408 */
/*!***********************************************!*\
  !*** ./node_modules/immediate/lib/browser.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(global) {
var Mutation = global.MutationObserver || global.WebKitMutationObserver;

var scheduleDrain;

{
  if (Mutation) {
    var called = 0;
    var observer = new Mutation(nextTick);
    var element = global.document.createTextNode('');
    observer.observe(element, {
      characterData: true
    });
    scheduleDrain = function () {
      element.data = (called = ++called % 2);
    };
  } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {
    var channel = new global.MessageChannel();
    channel.port1.onmessage = nextTick;
    scheduleDrain = function () {
      channel.port2.postMessage(0);
    };
  } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {
    scheduleDrain = function () {

      // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
      // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
      var scriptEl = global.document.createElement('script');
      scriptEl.onreadystatechange = function () {
        nextTick();

        scriptEl.onreadystatechange = null;
        scriptEl.parentNode.removeChild(scriptEl);
        scriptEl = null;
      };
      global.document.documentElement.appendChild(scriptEl);
    };
  } else {
    scheduleDrain = function () {
      setTimeout(nextTick, 0);
    };
  }
}

var draining;
var queue = [];
//named nextTick for less confusing stack traces
function nextTick() {
  draining = true;
  var i, oldQueue;
  var len = queue.length;
  while (len) {
    oldQueue = queue;
    queue = [];
    i = -1;
    while (++i < len) {
      oldQueue[i]();
    }
    len = queue.length;
  }
  draining = false;
}

module.exports = immediate;
function immediate(task) {
  if (queue.push(task) === 1 && !draining) {
    scheduleDrain();
  }
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../webpack/buildin/global.js */ 86)))

/***/ }),
/* 409 */
/*!*****************************************!*\
  !*** ./node_modules/lie/lib/browser.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var immediate = __webpack_require__(/*! immediate */ 408);

/* istanbul ignore next */
function INTERNAL() {}

var handlers = {};

var REJECTED = ['REJECTED'];
var FULFILLED = ['FULFILLED'];
var PENDING = ['PENDING'];

module.exports = Promise;

function Promise(resolver) {
  if (typeof resolver !== 'function') {
    throw new TypeError('resolver must be a function');
  }
  this.state = PENDING;
  this.queue = [];
  this.outcome = void 0;
  if (resolver !== INTERNAL) {
    safelyResolveThenable(this, resolver);
  }
}

Promise.prototype["catch"] = function (onRejected) {
  return this.then(null, onRejected);
};
Promise.prototype.then = function (onFulfilled, onRejected) {
  if (typeof onFulfilled !== 'function' && this.state === FULFILLED ||
    typeof onRejected !== 'function' && this.state === REJECTED) {
    return this;
  }
  var promise = new this.constructor(INTERNAL);
  if (this.state !== PENDING) {
    var resolver = this.state === FULFILLED ? onFulfilled : onRejected;
    unwrap(promise, resolver, this.outcome);
  } else {
    this.queue.push(new QueueItem(promise, onFulfilled, onRejected));
  }

  return promise;
};
function QueueItem(promise, onFulfilled, onRejected) {
  this.promise = promise;
  if (typeof onFulfilled === 'function') {
    this.onFulfilled = onFulfilled;
    this.callFulfilled = this.otherCallFulfilled;
  }
  if (typeof onRejected === 'function') {
    this.onRejected = onRejected;
    this.callRejected = this.otherCallRejected;
  }
}
QueueItem.prototype.callFulfilled = function (value) {
  handlers.resolve(this.promise, value);
};
QueueItem.prototype.otherCallFulfilled = function (value) {
  unwrap(this.promise, this.onFulfilled, value);
};
QueueItem.prototype.callRejected = function (value) {
  handlers.reject(this.promise, value);
};
QueueItem.prototype.otherCallRejected = function (value) {
  unwrap(this.promise, this.onRejected, value);
};

function unwrap(promise, func, value) {
  immediate(function () {
    var returnValue;
    try {
      returnValue = func(value);
    } catch (e) {
      return handlers.reject(promise, e);
    }
    if (returnValue === promise) {
      handlers.reject(promise, new TypeError('Cannot resolve promise with itself'));
    } else {
      handlers.resolve(promise, returnValue);
    }
  });
}

handlers.resolve = function (self, value) {
  var result = tryCatch(getThen, value);
  if (result.status === 'error') {
    return handlers.reject(self, result.value);
  }
  var thenable = result.value;

  if (thenable) {
    safelyResolveThenable(self, thenable);
  } else {
    self.state = FULFILLED;
    self.outcome = value;
    var i = -1;
    var len = self.queue.length;
    while (++i < len) {
      self.queue[i].callFulfilled(value);
    }
  }
  return self;
};
handlers.reject = function (self, error) {
  self.state = REJECTED;
  self.outcome = error;
  var i = -1;
  var len = self.queue.length;
  while (++i < len) {
    self.queue[i].callRejected(error);
  }
  return self;
};

function getThen(obj) {
  // Make sure we only access the accessor once as required by the spec
  var then = obj && obj.then;
  if (obj && (typeof obj === 'object' || typeof obj === 'function') && typeof then === 'function') {
    return function appyThen() {
      then.apply(obj, arguments);
    };
  }
}

function safelyResolveThenable(self, thenable) {
  // Either fulfill, reject or reject with error
  var called = false;
  function onError(value) {
    if (called) {
      return;
    }
    called = true;
    handlers.reject(self, value);
  }

  function onSuccess(value) {
    if (called) {
      return;
    }
    called = true;
    handlers.resolve(self, value);
  }

  function tryToUnwrap() {
    thenable(onSuccess, onError);
  }

  var result = tryCatch(tryToUnwrap);
  if (result.status === 'error') {
    onError(result.value);
  }
}

function tryCatch(func, value) {
  var out = {};
  try {
    out.value = func(value);
    out.status = 'success';
  } catch (e) {
    out.status = 'error';
    out.value = e;
  }
  return out;
}

Promise.resolve = resolve;
function resolve(value) {
  if (value instanceof this) {
    return value;
  }
  return handlers.resolve(new this(INTERNAL), value);
}

Promise.reject = reject;
function reject(reason) {
  var promise = new this(INTERNAL);
  return handlers.reject(promise, reason);
}

Promise.all = all;
function all(iterable) {
  var self = this;
  if (Object.prototype.toString.call(iterable) !== '[object Array]') {
    return this.reject(new TypeError('must be an array'));
  }

  var len = iterable.length;
  var called = false;
  if (!len) {
    return this.resolve([]);
  }

  var values = new Array(len);
  var resolved = 0;
  var i = -1;
  var promise = new this(INTERNAL);

  while (++i < len) {
    allResolver(iterable[i], i);
  }
  return promise;
  function allResolver(value, i) {
    self.resolve(value).then(resolveFromAll, function (error) {
      if (!called) {
        called = true;
        handlers.reject(promise, error);
      }
    });
    function resolveFromAll(outValue) {
      values[i] = outValue;
      if (++resolved === len && !called) {
        called = true;
        handlers.resolve(promise, values);
      }
    }
  }
}

Promise.race = race;
function race(iterable) {
  var self = this;
  if (Object.prototype.toString.call(iterable) !== '[object Array]') {
    return this.reject(new TypeError('must be an array'));
  }

  var len = iterable.length;
  var called = false;
  if (!len) {
    return this.resolve([]);
  }

  var i = -1;
  var promise = new this(INTERNAL);

  while (++i < len) {
    resolver(iterable[i]);
  }
  return promise;
  function resolver(value) {
    self.resolve(value).then(function (response) {
      if (!called) {
        called = true;
        handlers.resolve(promise, response);
      }
    }, function (error) {
      if (!called) {
        called = true;
        handlers.reject(promise, error);
      }
    });
  }
}


/***/ }),
/* 410 */
/*!*************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_cof.js ***!
  \*************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

var toString = {}.toString;

module.exports = function(it){
  return toString.call(it).slice(8, -1);
};

/***/ }),
/* 411 */
/*!**************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_html.js ***!
  \**************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./_global */ 154).document && document.documentElement;

/***/ }),
/* 412 */
/*!****************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_invoke.js ***!
  \****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

// fast apply, http://jsperf.lnkit.com/fast-apply/5
module.exports = function(fn, args, that){
  var un = that === undefined;
  switch(args.length){
    case 0: return un ? fn()
                      : fn.call(that);
    case 1: return un ? fn(args[0])
                      : fn.call(that, args[0]);
    case 2: return un ? fn(args[0], args[1])
                      : fn.call(that, args[0], args[1]);
    case 3: return un ? fn(args[0], args[1], args[2])
                      : fn.call(that, args[0], args[1], args[2]);
    case 4: return un ? fn(args[0], args[1], args[2], args[3])
                      : fn.call(that, args[0], args[1], args[2], args[3]);
  } return              fn.apply(that, args);
};

/***/ }),
/* 413 */
/*!**************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_task.js ***!
  \**************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var ctx                = __webpack_require__(/*! ./_ctx */ 227)
  , invoke             = __webpack_require__(/*! ./_invoke */ 412)
  , html               = __webpack_require__(/*! ./_html */ 411)
  , cel                = __webpack_require__(/*! ./_dom-create */ 225)
  , global             = __webpack_require__(/*! ./_global */ 154)
  , process            = global.process
  , setTask            = global.setImmediate
  , clearTask          = global.clearImmediate
  , MessageChannel     = global.MessageChannel
  , counter            = 0
  , queue              = {}
  , ONREADYSTATECHANGE = 'onreadystatechange'
  , defer, channel, port;
var run = function(){
  var id = +this;
  if(queue.hasOwnProperty(id)){
    var fn = queue[id];
    delete queue[id];
    fn();
  }
};
var listener = function(event){
  run.call(event.data);
};
// Node.js 0.9+ & IE10+ has setImmediate, otherwise:
if(!setTask || !clearTask){
  setTask = function setImmediate(fn){
    var args = [], i = 1;
    while(arguments.length > i)args.push(arguments[i++]);
    queue[++counter] = function(){
      invoke(typeof fn == 'function' ? fn : Function(fn), args);
    };
    defer(counter);
    return counter;
  };
  clearTask = function clearImmediate(id){
    delete queue[id];
  };
  // Node.js 0.8-
  if(__webpack_require__(/*! ./_cof */ 410)(process) == 'process'){
    defer = function(id){
      process.nextTick(ctx(run, id, 1));
    };
  // Browsers with MessageChannel, includes WebWorkers
  } else if(MessageChannel){
    channel = new MessageChannel;
    port    = channel.port2;
    channel.port1.onmessage = listener;
    defer = ctx(port.postMessage, port, 1);
  // Browsers with postMessage, skip WebWorkers
  // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'
  } else if(global.addEventListener && typeof postMessage == 'function' && !global.importScripts){
    defer = function(id){
      global.postMessage(id + '', '*');
    };
    global.addEventListener('message', listener, false);
  // IE8-
  } else if(ONREADYSTATECHANGE in cel('script')){
    defer = function(id){
      html.appendChild(cel('script'))[ONREADYSTATECHANGE] = function(){
        html.removeChild(this);
        run.call(id);
      };
    };
  // Rest old browsers
  } else {
    defer = function(id){
      setTimeout(ctx(run, id, 1), 0);
    };
  }
}
module.exports = {
  set:   setTask,
  clear: clearTask
};

/***/ }),
/* 414 */
/*!***********************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_property-desc.js ***!
  \***********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function(bitmap, value){
  return {
    enumerable  : !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable    : !(bitmap & 4),
    value       : value
  };
};

/***/ }),
/* 415 */
/*!**********************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_to-primitive.js ***!
  \**********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// 7.1.1 ToPrimitive(input [, PreferredType])
var isObject = __webpack_require__(/*! ./_is-object */ 187);
// instead of the ES6 spec version, we didn't implement @@toPrimitive case
// and the second argument - flag - preferred type is a string
module.exports = function(it, S){
  if(!isObject(it))return it;
  var fn, val;
  if(S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
  if(typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it)))return val;
  if(!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
  throw TypeError("Can't convert object to primitive value");
};

/***/ }),
/* 416 */
/*!************************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_ie8-dom-define.js ***!
  \************************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = !__webpack_require__(/*! ./_descriptors */ 186) && !__webpack_require__(/*! ./_fails */ 226)(function(){
  return Object.defineProperty(__webpack_require__(/*! ./_dom-create */ 225)('div'), 'a', {get: function(){ return 7; }}).a != 7;
});

/***/ }),
/* 417 */
/*!*******************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_an-object.js ***!
  \*******************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var isObject = __webpack_require__(/*! ./_is-object */ 187);
module.exports = function(it){
  if(!isObject(it))throw TypeError(it + ' is not an object!');
  return it;
};

/***/ }),
/* 418 */
/*!*******************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_object-dp.js ***!
  \*******************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var anObject       = __webpack_require__(/*! ./_an-object */ 417)
  , IE8_DOM_DEFINE = __webpack_require__(/*! ./_ie8-dom-define */ 416)
  , toPrimitive    = __webpack_require__(/*! ./_to-primitive */ 415)
  , dP             = Object.defineProperty;

exports.f = __webpack_require__(/*! ./_descriptors */ 186) ? Object.defineProperty : function defineProperty(O, P, Attributes){
  anObject(O);
  P = toPrimitive(P, true);
  anObject(Attributes);
  if(IE8_DOM_DEFINE)try {
    return dP(O, P, Attributes);
  } catch(e){ /* empty */ }
  if('get' in Attributes || 'set' in Attributes)throw TypeError('Accessors not supported!');
  if('value' in Attributes)O[P] = Attributes.value;
  return O;
};

/***/ }),
/* 419 */
/*!**************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_hide.js ***!
  \**************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var dP         = __webpack_require__(/*! ./_object-dp */ 418)
  , createDesc = __webpack_require__(/*! ./_property-desc */ 414);
module.exports = __webpack_require__(/*! ./_descriptors */ 186) ? function(object, key, value){
  return dP.f(object, key, createDesc(1, value));
} : function(object, key, value){
  object[key] = value;
  return object;
};

/***/ }),
/* 420 */
/*!********************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_a-function.js ***!
  \********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function(it){
  if(typeof it != 'function')throw TypeError(it + ' is not a function!');
  return it;
};

/***/ }),
/* 421 */
/*!****************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/_export.js ***!
  \****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var global    = __webpack_require__(/*! ./_global */ 154)
  , core      = __webpack_require__(/*! ./_core */ 228)
  , ctx       = __webpack_require__(/*! ./_ctx */ 227)
  , hide      = __webpack_require__(/*! ./_hide */ 419)
  , PROTOTYPE = 'prototype';

var $export = function(type, name, source){
  var IS_FORCED = type & $export.F
    , IS_GLOBAL = type & $export.G
    , IS_STATIC = type & $export.S
    , IS_PROTO  = type & $export.P
    , IS_BIND   = type & $export.B
    , IS_WRAP   = type & $export.W
    , exports   = IS_GLOBAL ? core : core[name] || (core[name] = {})
    , expProto  = exports[PROTOTYPE]
    , target    = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]
    , key, own, out;
  if(IS_GLOBAL)source = name;
  for(key in source){
    // contains in native
    own = !IS_FORCED && target && target[key] !== undefined;
    if(own && key in exports)continue;
    // export native or passed
    out = own ? target[key] : source[key];
    // prevent global pollution for namespaces
    exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]
    // bind timers to global for call from export context
    : IS_BIND && own ? ctx(out, global)
    // wrap global constructors for prevent change them in library
    : IS_WRAP && target[key] == out ? (function(C){
      var F = function(a, b, c){
        if(this instanceof C){
          switch(arguments.length){
            case 0: return new C;
            case 1: return new C(a);
            case 2: return new C(a, b);
          } return new C(a, b, c);
        } return C.apply(this, arguments);
      };
      F[PROTOTYPE] = C[PROTOTYPE];
      return F;
    // make static versions for prototype methods
    })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;
    // export proto methods to core.%CONSTRUCTOR%.methods.%NAME%
    if(IS_PROTO){
      (exports.virtual || (exports.virtual = {}))[key] = out;
      // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%
      if(type & $export.R && expProto && !expProto[key])hide(expProto, key, out);
    }
  }
};
// type bitmap
$export.F = 1;   // forced
$export.G = 2;   // global
$export.S = 4;   // static
$export.P = 8;   // proto
$export.B = 16;  // bind
$export.W = 32;  // wrap
$export.U = 64;  // safe
$export.R = 128; // real proto method for `library` 
module.exports = $export;

/***/ }),
/* 422 */
/*!**********************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/modules/web.immediate.js ***!
  \**********************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var $export = __webpack_require__(/*! ./_export */ 421)
  , $task   = __webpack_require__(/*! ./_task */ 413);
$export($export.G + $export.B, {
  setImmediate:   $task.set,
  clearImmediate: $task.clear
});

/***/ }),
/* 423 */
/*!*****************************************************************************!*\
  !*** ./node_modules/jszip/node_modules/core-js/library/fn/set-immediate.js ***!
  \*****************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

__webpack_require__(/*! ../modules/web.immediate */ 422);
module.exports = __webpack_require__(/*! ../modules/_core */ 228).setImmediate;

/***/ }),
/* 424 */
/*!*****************************************************!*\
  !*** ./node_modules/readable-stream/passthrough.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./readable */ 189).PassThrough


/***/ }),
/* 425 */
/*!***************************************************!*\
  !*** ./node_modules/readable-stream/transform.js ***!
  \***************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./readable */ 189).Transform


/***/ }),
/* 426 */
/*!********************************************************!*\
  !*** ./node_modules/readable-stream/duplex-browser.js ***!
  \********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./lib/_stream_duplex.js */ 123);


/***/ }),
/* 427 */
/*!**********************************************************!*\
  !*** ./node_modules/readable-stream/writable-browser.js ***!
  \**********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./lib/_stream_writable.js */ 188);


/***/ }),
/* 428 */
/*!*****************************************************************!*\
  !*** ./node_modules/readable-stream/lib/_stream_passthrough.js ***!
  \*****************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.



module.exports = PassThrough;

var Transform = __webpack_require__(/*! ./_stream_transform */ 230);

/*<replacement>*/
var util = __webpack_require__(/*! core-util-is */ 144);
util.inherits = __webpack_require__(/*! inherits */ 124);
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};

/***/ }),
/* 429 */
/*!************************************************!*\
  !*** ./node_modules/util-deprecate/browser.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global) {
/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86)))

/***/ }),
/* 430 */
/*!***************************************************!*\
  !*** ./node_modules/setimmediate/setImmediate.js ***!
  \***************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, process) {(function (global, undefined) {
    "use strict";

    if (global.setImmediate) {
        return;
    }

    var nextHandle = 1; // Spec says greater than zero
    var tasksByHandle = {};
    var currentlyRunningATask = false;
    var doc = global.document;
    var registerImmediate;

    function setImmediate(callback) {
      // Callback can either be a function or a string
      if (typeof callback !== "function") {
        callback = new Function("" + callback);
      }
      // Copy function arguments
      var args = new Array(arguments.length - 1);
      for (var i = 0; i < args.length; i++) {
          args[i] = arguments[i + 1];
      }
      // Store and register the task
      var task = { callback: callback, args: args };
      tasksByHandle[nextHandle] = task;
      registerImmediate(nextHandle);
      return nextHandle++;
    }

    function clearImmediate(handle) {
        delete tasksByHandle[handle];
    }

    function run(task) {
        var callback = task.callback;
        var args = task.args;
        switch (args.length) {
        case 0:
            callback();
            break;
        case 1:
            callback(args[0]);
            break;
        case 2:
            callback(args[0], args[1]);
            break;
        case 3:
            callback(args[0], args[1], args[2]);
            break;
        default:
            callback.apply(undefined, args);
            break;
        }
    }

    function runIfPresent(handle) {
        // From the spec: "Wait until any invocations of this algorithm started before this one have completed."
        // So if we're currently running a task, we'll need to delay this invocation.
        if (currentlyRunningATask) {
            // Delay by doing a setTimeout. setImmediate was tried instead, but in Firefox 7 it generated a
            // "too much recursion" error.
            setTimeout(runIfPresent, 0, handle);
        } else {
            var task = tasksByHandle[handle];
            if (task) {
                currentlyRunningATask = true;
                try {
                    run(task);
                } finally {
                    clearImmediate(handle);
                    currentlyRunningATask = false;
                }
            }
        }
    }

    function installNextTickImplementation() {
        registerImmediate = function(handle) {
            process.nextTick(function () { runIfPresent(handle); });
        };
    }

    function canUsePostMessage() {
        // The test against `importScripts` prevents this implementation from being installed inside a web worker,
        // where `global.postMessage` means something completely different and can't be used for this purpose.
        if (global.postMessage && !global.importScripts) {
            var postMessageIsAsynchronous = true;
            var oldOnMessage = global.onmessage;
            global.onmessage = function() {
                postMessageIsAsynchronous = false;
            };
            global.postMessage("", "*");
            global.onmessage = oldOnMessage;
            return postMessageIsAsynchronous;
        }
    }

    function installPostMessageImplementation() {
        // Installs an event handler on `global` for the `message` event: see
        // * https://developer.mozilla.org/en/DOM/window.postMessage
        // * http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#crossDocumentMessages

        var messagePrefix = "setImmediate$" + Math.random() + "$";
        var onGlobalMessage = function(event) {
            if (event.source === global &&
                typeof event.data === "string" &&
                event.data.indexOf(messagePrefix) === 0) {
                runIfPresent(+event.data.slice(messagePrefix.length));
            }
        };

        if (global.addEventListener) {
            global.addEventListener("message", onGlobalMessage, false);
        } else {
            global.attachEvent("onmessage", onGlobalMessage);
        }

        registerImmediate = function(handle) {
            global.postMessage(messagePrefix + handle, "*");
        };
    }

    function installMessageChannelImplementation() {
        var channel = new MessageChannel();
        channel.port1.onmessage = function(event) {
            var handle = event.data;
            runIfPresent(handle);
        };

        registerImmediate = function(handle) {
            channel.port2.postMessage(handle);
        };
    }

    function installReadyStateChangeImplementation() {
        var html = doc.documentElement;
        registerImmediate = function(handle) {
            // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
            // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
            var script = doc.createElement("script");
            script.onreadystatechange = function () {
                runIfPresent(handle);
                script.onreadystatechange = null;
                html.removeChild(script);
                script = null;
            };
            html.appendChild(script);
        };
    }

    function installSetTimeoutImplementation() {
        registerImmediate = function(handle) {
            setTimeout(runIfPresent, 0, handle);
        };
    }

    // If supported, we should attach to the prototype of global, since that is where setTimeout et al. live.
    var attachTo = Object.getPrototypeOf && Object.getPrototypeOf(global);
    attachTo = attachTo && attachTo.setTimeout ? attachTo : global;

    // Don't get fooled by e.g. browserify environments.
    if ({}.toString.call(global.process) === "[object process]") {
        // For Node.js before 0.9
        installNextTickImplementation();

    } else if (canUsePostMessage()) {
        // For non-IE10 modern browsers
        installPostMessageImplementation();

    } else if (global.MessageChannel) {
        // For web workers, where supported
        installMessageChannelImplementation();

    } else if (doc && "onreadystatechange" in doc.createElement("script")) {
        // For IE 6–8
        installReadyStateChangeImplementation();

    } else {
        // For older browsers
        installSetTimeoutImplementation();
    }

    attachTo.setImmediate = setImmediate;
    attachTo.clearImmediate = clearImmediate;
}(typeof self === "undefined" ? typeof global === "undefined" ? this : global : self));

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86), __webpack_require__(/*! ./../process/browser.js */ 146)))

/***/ }),
/* 431 */
/*!************************************************!*\
  !*** ./node_modules/timers-browserify/main.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global) {var scope = (typeof global !== "undefined" && global) ||
            (typeof self !== "undefined" && self) ||
            window;
var apply = Function.prototype.apply;

// DOM APIs, for completeness

exports.setTimeout = function() {
  return new Timeout(apply.call(setTimeout, scope, arguments), clearTimeout);
};
exports.setInterval = function() {
  return new Timeout(apply.call(setInterval, scope, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) {
  if (timeout) {
    timeout.close();
  }
};

function Timeout(id, clearFn) {
  this._id = id;
  this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
  this._clearFn.call(scope, this._id);
};

// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = msecs;
};

exports.unenroll = function(item) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = -1;
};

exports._unrefActive = exports.active = function(item) {
  clearTimeout(item._idleTimeoutId);

  var msecs = item._idleTimeout;
  if (msecs >= 0) {
    item._idleTimeoutId = setTimeout(function onTimeout() {
      if (item._onTimeout)
        item._onTimeout();
    }, msecs);
  }
};

// setimmediate attaches itself to the global object
__webpack_require__(/*! setimmediate */ 430);
// On some exotic environments, it's not clear which object `setimmediate` was
// able to install onto.  Search each possibility in the same order as the
// `setimmediate` library.
exports.setImmediate = (typeof self !== "undefined" && self.setImmediate) ||
                       (typeof global !== "undefined" && global.setImmediate) ||
                       (this && this.setImmediate);
exports.clearImmediate = (typeof self !== "undefined" && self.clearImmediate) ||
                         (typeof global !== "undefined" && global.clearImmediate) ||
                         (this && this.clearImmediate);

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86)))

/***/ }),
/* 432 */,
/* 433 */
/*!*************************************************************************!*\
  !*** ./node_modules/readable-stream/lib/internal/streams/BufferList.js ***!
  \*************************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Buffer = __webpack_require__(/*! safe-buffer */ 156).Buffer;
var util = __webpack_require__(/*! util */ 432);

function copyBuffer(src, target, offset) {
  src.copy(target, offset);
}

module.exports = function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  BufferList.prototype.push = function push(v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };

  BufferList.prototype.unshift = function unshift(v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };

  BufferList.prototype.shift = function shift() {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };

  BufferList.prototype.clear = function clear() {
    this.head = this.tail = null;
    this.length = 0;
  };

  BufferList.prototype.join = function join(s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };

  BufferList.prototype.concat = function concat(n) {
    if (this.length === 0) return Buffer.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = Buffer.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      copyBuffer(p.data, ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };

  return BufferList;
}();

if (util && util.inspect && util.inspect.custom) {
  module.exports.prototype[util.inspect.custom] = function () {
    var obj = util.inspect({ length: this.length });
    return this.constructor.name + ' ' + obj;
  };
}

/***/ }),
/* 434 */,
/* 435 */
/*!*************************************************!*\
  !*** ./node_modules/stream-browserify/index.js ***!
  \*************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = __webpack_require__(/*! events */ 133).EventEmitter;
var inherits = __webpack_require__(/*! inherits */ 124);

inherits(Stream, EE);
Stream.Readable = __webpack_require__(/*! readable-stream/readable.js */ 189);
Stream.Writable = __webpack_require__(/*! readable-stream/writable.js */ 427);
Stream.Duplex = __webpack_require__(/*! readable-stream/duplex.js */ 426);
Stream.Transform = __webpack_require__(/*! readable-stream/transform.js */ 425);
Stream.PassThrough = __webpack_require__(/*! readable-stream/passthrough.js */ 424);

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};


/***/ }),
/* 436 */
/*!***************************************!*\
  !*** ./node_modules/ieee754/index.js ***!
  \***************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}


/***/ }),
/* 437 */
/*!*****************************************!*\
  !*** ./node_modules/base64-js/index.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  for (var i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(
      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
    ))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}


/***/ }),
/* 438 */
/*!******************************************!*\
  !*** ./node_modules/jszip/lib/object.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var utf8 = __webpack_require__(/*! ./utf8 */ 132);
var utils = __webpack_require__(/*! ./utils */ 60);
var GenericWorker = __webpack_require__(/*! ./stream/GenericWorker */ 90);
var StreamHelper = __webpack_require__(/*! ./stream/StreamHelper */ 224);
var defaults = __webpack_require__(/*! ./defaults */ 223);
var CompressedObject = __webpack_require__(/*! ./compressedObject */ 185);
var ZipObject = __webpack_require__(/*! ./zipObject */ 405);
var generate = __webpack_require__(/*! ./generate */ 404);
var nodejsUtils = __webpack_require__(/*! ./nodejsUtils */ 155);
var NodejsStreamInputAdapter = __webpack_require__(/*! ./nodejs/NodejsStreamInputAdapter */ 392);


/**
 * Add a file in the current folder.
 * @private
 * @param {string} name the name of the file
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file
 * @param {Object} originalOptions the options of the file
 * @return {Object} the new file.
 */
var fileAdd = function(name, data, originalOptions) {
    // be sure sub folders exist
    var dataType = utils.getTypeOf(data),
        parent;


    /*
     * Correct options.
     */

    var o = utils.extend(originalOptions || {}, defaults);
    o.date = o.date || new Date();
    if (o.compression !== null) {
        o.compression = o.compression.toUpperCase();
    }

    if (typeof o.unixPermissions === "string") {
        o.unixPermissions = parseInt(o.unixPermissions, 8);
    }

    // UNX_IFDIR  0040000 see zipinfo.c
    if (o.unixPermissions && (o.unixPermissions & 0x4000)) {
        o.dir = true;
    }
    // Bit 4    Directory
    if (o.dosPermissions && (o.dosPermissions & 0x0010)) {
        o.dir = true;
    }

    if (o.dir) {
        name = forceTrailingSlash(name);
    }
    if (o.createFolders && (parent = parentFolder(name))) {
        folderAdd.call(this, parent, true);
    }

    var isUnicodeString = dataType === "string" && o.binary === false && o.base64 === false;
    if (!originalOptions || typeof originalOptions.binary === "undefined") {
        o.binary = !isUnicodeString;
    }


    var isCompressedEmpty = (data instanceof CompressedObject) && data.uncompressedSize === 0;

    if (isCompressedEmpty || o.dir || !data || data.length === 0) {
        o.base64 = false;
        o.binary = true;
        data = "";
        o.compression = "STORE";
        dataType = "string";
    }

    /*
     * Convert content to fit.
     */

    var zipObjectContent = null;
    if (data instanceof CompressedObject || data instanceof GenericWorker) {
        zipObjectContent = data;
    } else if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {
        zipObjectContent = new NodejsStreamInputAdapter(name, data);
    } else {
        zipObjectContent = utils.prepareContent(name, data, o.binary, o.optimizedBinaryString, o.base64);
    }

    var object = new ZipObject(name, zipObjectContent, o);
    this.files[name] = object;
    /*
    TODO: we can't throw an exception because we have async promises
    (we can have a promise of a Date() for example) but returning a
    promise is useless because file(name, data) returns the JSZip
    object for chaining. Should we break that to allow the user
    to catch the error ?

    return external.Promise.resolve(zipObjectContent)
    .then(function () {
        return object;
    });
    */
};

/**
 * Find the parent folder of the path.
 * @private
 * @param {string} path the path to use
 * @return {string} the parent folder, or ""
 */
var parentFolder = function (path) {
    if (path.slice(-1) === '/') {
        path = path.substring(0, path.length - 1);
    }
    var lastSlash = path.lastIndexOf('/');
    return (lastSlash > 0) ? path.substring(0, lastSlash) : "";
};

/**
 * Returns the path with a slash at the end.
 * @private
 * @param {String} path the path to check.
 * @return {String} the path with a trailing slash.
 */
var forceTrailingSlash = function(path) {
    // Check the name ends with a /
    if (path.slice(-1) !== "/") {
        path += "/"; // IE doesn't like substr(-1)
    }
    return path;
};

/**
 * Add a (sub) folder in the current folder.
 * @private
 * @param {string} name the folder's name
 * @param {boolean=} [createFolders] If true, automatically create sub
 *  folders. Defaults to false.
 * @return {Object} the new folder.
 */
var folderAdd = function(name, createFolders) {
    createFolders = (typeof createFolders !== 'undefined') ? createFolders : defaults.createFolders;

    name = forceTrailingSlash(name);

    // Does this folder already exist?
    if (!this.files[name]) {
        fileAdd.call(this, name, null, {
            dir: true,
            createFolders: createFolders
        });
    }
    return this.files[name];
};

/**
* Cross-window, cross-Node-context regular expression detection
* @param  {Object}  object Anything
* @return {Boolean}        true if the object is a regular expression,
* false otherwise
*/
function isRegExp(object) {
    return Object.prototype.toString.call(object) === "[object RegExp]";
}

// return the actual prototype of JSZip
var out = {
    /**
     * @see loadAsync
     */
    load: function() {
        throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
    },


    /**
     * Call a callback function for each entry at this folder level.
     * @param {Function} cb the callback function:
     * function (relativePath, file) {...}
     * It takes 2 arguments : the relative path and the file.
     */
    forEach: function(cb) {
        var filename, relativePath, file;
        for (filename in this.files) {
            if (!this.files.hasOwnProperty(filename)) {
                continue;
            }
            file = this.files[filename];
            relativePath = filename.slice(this.root.length, filename.length);
            if (relativePath && filename.slice(0, this.root.length) === this.root) { // the file is in the current root
                cb(relativePath, file); // TODO reverse the parameters ? need to be clean AND consistent with the filter search fn...
            }
        }
    },

    /**
     * Filter nested files/folders with the specified function.
     * @param {Function} search the predicate to use :
     * function (relativePath, file) {...}
     * It takes 2 arguments : the relative path and the file.
     * @return {Array} An array of matching elements.
     */
    filter: function(search) {
        var result = [];
        this.forEach(function (relativePath, entry) {
            if (search(relativePath, entry)) { // the file matches the function
                result.push(entry);
            }

        });
        return result;
    },

    /**
     * Add a file to the zip file, or search a file.
     * @param   {string|RegExp} name The name of the file to add (if data is defined),
     * the name of the file to find (if no data) or a regex to match files.
     * @param   {String|ArrayBuffer|Uint8Array|Buffer} data  The file data, either raw or base64 encoded
     * @param   {Object} o     File options
     * @return  {JSZip|Object|Array} this JSZip object (when adding a file),
     * a file (when searching by string) or an array of files (when searching by regex).
     */
    file: function(name, data, o) {
        if (arguments.length === 1) {
            if (isRegExp(name)) {
                var regexp = name;
                return this.filter(function(relativePath, file) {
                    return !file.dir && regexp.test(relativePath);
                });
            }
            else { // text
                var obj = this.files[this.root + name];
                if (obj && !obj.dir) {
                    return obj;
                } else {
                    return null;
                }
            }
        }
        else { // more than one argument : we have data !
            name = this.root + name;
            fileAdd.call(this, name, data, o);
        }
        return this;
    },

    /**
     * Add a directory to the zip file, or search.
     * @param   {String|RegExp} arg The name of the directory to add, or a regex to search folders.
     * @return  {JSZip} an object with the new directory as the root, or an array containing matching folders.
     */
    folder: function(arg) {
        if (!arg) {
            return this;
        }

        if (isRegExp(arg)) {
            return this.filter(function(relativePath, file) {
                return file.dir && arg.test(relativePath);
            });
        }

        // else, name is a new folder
        var name = this.root + arg;
        var newFolder = folderAdd.call(this, name);

        // Allow chaining by returning a new object with this folder as the root
        var ret = this.clone();
        ret.root = newFolder.name;
        return ret;
    },

    /**
     * Delete a file, or a directory and all sub-files, from the zip
     * @param {string} name the name of the file to delete
     * @return {JSZip} this JSZip object
     */
    remove: function(name) {
        name = this.root + name;
        var file = this.files[name];
        if (!file) {
            // Look for any folders
            if (name.slice(-1) !== "/") {
                name += "/";
            }
            file = this.files[name];
        }

        if (file && !file.dir) {
            // file
            delete this.files[name];
        } else {
            // maybe a folder, delete recursively
            var kids = this.filter(function(relativePath, file) {
                return file.name.slice(0, name.length) === name;
            });
            for (var i = 0; i < kids.length; i++) {
                delete this.files[kids[i].name];
            }
        }

        return this;
    },

    /**
     * Generate the complete zip file
     * @param {Object} options the options to generate the zip file :
     * - compression, "STORE" by default.
     * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
     * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the zip file
     */
    generate: function(options) {
        throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
    },

    /**
     * Generate the complete zip file as an internal stream.
     * @param {Object} options the options to generate the zip file :
     * - compression, "STORE" by default.
     * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
     * @return {StreamHelper} the streamed zip file.
     */
    generateInternalStream: function(options) {
      var worker, opts = {};
      try {
          opts = utils.extend(options || {}, {
              streamFiles: false,
              compression: "STORE",
              compressionOptions : null,
              type: "",
              platform: "DOS",
              comment: null,
              mimeType: 'application/zip',
              encodeFileName: utf8.utf8encode
          });

          opts.type = opts.type.toLowerCase();
          opts.compression = opts.compression.toUpperCase();

          // "binarystring" is prefered but the internals use "string".
          if(opts.type === "binarystring") {
            opts.type = "string";
          }

          if (!opts.type) {
            throw new Error("No output type specified.");
          }

          utils.checkSupport(opts.type);

          // accept nodejs `process.platform`
          if(
              opts.platform === 'darwin' ||
              opts.platform === 'freebsd' ||
              opts.platform === 'linux' ||
              opts.platform === 'sunos'
          ) {
              opts.platform = "UNIX";
          }
          if (opts.platform === 'win32') {
              opts.platform = "DOS";
          }

          var comment = opts.comment || this.comment || "";
          worker = generate.generateWorker(this, opts, comment);
      } catch (e) {
        worker = new GenericWorker("error");
        worker.error(e);
      }
      return new StreamHelper(worker, opts.type || "string", opts.mimeType);
    },
    /**
     * Generate the complete zip file asynchronously.
     * @see generateInternalStream
     */
    generateAsync: function(options, onUpdate) {
        return this.generateInternalStream(options).accumulate(onUpdate);
    },
    /**
     * Generate the complete zip file asynchronously.
     * @see generateInternalStream
     */
    generateNodeStream: function(options, onUpdate) {
        options = options || {};
        if (!options.type) {
            options.type = "nodebuffer";
        }
        return this.generateInternalStream(options).toNodejsStream(onUpdate);
    }
};
module.exports = out;


/***/ }),
/* 439 */,
/* 440 */
/*!****************************************!*\
  !*** ./node_modules/date-now/index.js ***!
  \****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = now

function now() {
    return new Date().getTime()
}


/***/ }),
/* 441 */
/*!***************************************!*\
  !*** ./node_modules/assert/assert.js ***!
  \***************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(global) {

// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
// original notice:

/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
function compare(a, b) {
  if (a === b) {
    return 0;
  }

  var x = a.length;
  var y = b.length;

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i];
      y = b[i];
      break;
    }
  }

  if (x < y) {
    return -1;
  }
  if (y < x) {
    return 1;
  }
  return 0;
}
function isBuffer(b) {
  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
    return global.Buffer.isBuffer(b);
  }
  return !!(b != null && b._isBuffer);
}

// based on node assert, original notice:

// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

var util = __webpack_require__(/*! util/ */ 237);
var hasOwn = Object.prototype.hasOwnProperty;
var pSlice = Array.prototype.slice;
var functionsHaveNames = (function () {
  return function foo() {}.name === 'foo';
}());
function pToString (obj) {
  return Object.prototype.toString.call(obj);
}
function isView(arrbuf) {
  if (isBuffer(arrbuf)) {
    return false;
  }
  if (typeof global.ArrayBuffer !== 'function') {
    return false;
  }
  if (typeof ArrayBuffer.isView === 'function') {
    return ArrayBuffer.isView(arrbuf);
  }
  if (!arrbuf) {
    return false;
  }
  if (arrbuf instanceof DataView) {
    return true;
  }
  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
    return true;
  }
  return false;
}
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

var regex = /\s*function\s+([^\(\s]*)\s*/;
// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
function getName(func) {
  if (!util.isFunction(func)) {
    return;
  }
  if (functionsHaveNames) {
    return func.name;
  }
  var str = func.toString();
  var match = str.match(regex);
  return match && match[1];
}
assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  } else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = getName(stackStartFunction);
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function truncate(s, n) {
  if (typeof s === 'string') {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}
function inspect(something) {
  if (functionsHaveNames || !util.isFunction(something)) {
    return util.inspect(something);
  }
  var rawname = getName(something);
  var name = rawname ? ': ' + rawname : '';
  return '[Function' +  name + ']';
}
function getMessage(self) {
  return truncate(inspect(self.actual), 128) + ' ' +
         self.operator + ' ' +
         truncate(inspect(self.expected), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
  }
};

function _deepEqual(actual, expected, strict, memos) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;
  } else if (isBuffer(actual) && isBuffer(expected)) {
    return compare(actual, expected) === 0;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if ((actual === null || typeof actual !== 'object') &&
             (expected === null || typeof expected !== 'object')) {
    return strict ? actual === expected : actual == expected;

  // If both values are instances of typed arrays, wrap their underlying
  // ArrayBuffers in a Buffer each to increase performance
  // This optimization requires the arrays to have the same type as checked by
  // Object.prototype.toString (aka pToString). Never perform binary
  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
  // bit patterns are not identical.
  } else if (isView(actual) && isView(expected) &&
             pToString(actual) === pToString(expected) &&
             !(actual instanceof Float32Array ||
               actual instanceof Float64Array)) {
    return compare(new Uint8Array(actual.buffer),
                   new Uint8Array(expected.buffer)) === 0;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else if (isBuffer(actual) !== isBuffer(expected)) {
    return false;
  } else {
    memos = memos || {actual: [], expected: []};

    var actualIndex = memos.actual.indexOf(actual);
    if (actualIndex !== -1) {
      if (actualIndex === memos.expected.indexOf(expected)) {
        return true;
      }
    }

    memos.actual.push(actual);
    memos.expected.push(expected);

    return objEquiv(actual, expected, strict, memos);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b, strict, actualVisitedObjects) {
  if (a === null || a === undefined || b === null || b === undefined)
    return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b))
    return a === b;
  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
    return false;
  var aIsArgs = isArguments(a);
  var bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b, strict);
  }
  var ka = objectKeys(a);
  var kb = objectKeys(b);
  var key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length !== kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] !== kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
      return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
  }
}


// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  }

  try {
    if (actual instanceof expected) {
      return true;
    }
  } catch (e) {
    // Ignore.  The instanceof check doesn't work for arrow functions.
  }

  if (Error.isPrototypeOf(expected)) {
    return false;
  }

  return expected.call({}, actual) === true;
}

function _tryBlock(block) {
  var error;
  try {
    block();
  } catch (e) {
    error = e;
  }
  return error;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (typeof block !== 'function') {
    throw new TypeError('"block" argument must be a function');
  }

  if (typeof expected === 'string') {
    message = expected;
    expected = null;
  }

  actual = _tryBlock(block);

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  var userProvidedMessage = typeof message === 'string';
  var isUnwantedException = !shouldThrow && util.isError(actual);
  var isUnexpectedException = !shouldThrow && actual && !expected;

  if ((isUnwantedException &&
      userProvidedMessage &&
      expectedException(actual, expected)) ||
      isUnexpectedException) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws(true, block, error, message);
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
  _throws(false, block, error, message);
};

assert.ifError = function(err) { if (err) throw err; };

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86)))

/***/ }),
/* 442 */
/*!******************************************************!*\
  !*** ./node_modules/util/support/isBufferBrowser.js ***!
  \******************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}

/***/ }),
/* 443 */
/*!**************************************************!*\
  !*** ./node_modules/console-browserify/index.js ***!
  \**************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global) {/*global window, global*/
var util = __webpack_require__(/*! util */ 237)
var assert = __webpack_require__(/*! assert */ 441)
var now = __webpack_require__(/*! date-now */ 440)

var slice = Array.prototype.slice
var console
var times = {}

if (typeof global !== "undefined" && global.console) {
    console = global.console
} else if (typeof window !== "undefined" && window.console) {
    console = window.console
} else {
    console = {}
}

var functions = [
    [log, "log"],
    [info, "info"],
    [warn, "warn"],
    [error, "error"],
    [time, "time"],
    [timeEnd, "timeEnd"],
    [trace, "trace"],
    [dir, "dir"],
    [consoleAssert, "assert"]
]

for (var i = 0; i < functions.length; i++) {
    var tuple = functions[i]
    var f = tuple[0]
    var name = tuple[1]

    if (!console[name]) {
        console[name] = f
    }
}

module.exports = console

function log() {}

function info() {
    console.log.apply(console, arguments)
}

function warn() {
    console.log.apply(console, arguments)
}

function error() {
    console.warn.apply(console, arguments)
}

function time(label) {
    times[label] = now()
}

function timeEnd(label) {
    var time = times[label]
    if (!time) {
        throw new Error("No such label: " + label)
    }

    var duration = now() - time
    console.log(label + ": " + duration + "ms")
}

function trace() {
    var err = new Error()
    err.name = "Trace"
    err.message = util.format.apply(null, arguments)
    console.error(err.stack)
}

function dir(object) {
    console.log(util.inspect(object) + "\n")
}

function consoleAssert(expression) {
    if (!expression) {
        var arr = slice.call(arguments, 1)
        assert.ok(false, util.format.apply(null, arr))
    }
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ 86)))

/***/ }),
/* 444 */
/*!************************************************!*\
  !*** ./node_modules/jshint/src/prod-params.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

/**
 * This module defines a set of enum-like values intended for use as bit
 * "flags" during parsing. The ECMAScript grammar defines a number of such
 * "production parameters" to control how certain forms are parsed in context.
 * JSHint implements additional parameters to facilitate detection of lint
 * warnings.
 *
 * An equivalent implementation which described the context in terms of a
 * "lookup table" object would be more idiomatic for a JavaScript project like
 * JSHint. However, because the number of contexts scales with the number of
 * expressions in the input program, this would have non-negligible impact on
 * the process's memory footprint.
 */
module.exports = {
  /**
   * Enabled when parsing expressions within ES2015 "export" declarations,
   * allowing otherwise-unreferenced bindings to be considered "used".
   */
  export: 1,

  /**
   * Enabled when parsing expressions within the head of `for` statements,
   * allowing to distinguish between `for-in` and "C-style" `for` statements.
   */
  noin: 2,

  /**
   * Enabled when the expression begins the statement, allowing the parser to
   * correctly select between the null denotation ("nud") and first null
   * denotation ("fud") parsing strategy.
   */
  initial: 4,

  preAsync: 8,

  async: 16,

  /**
   * Enabled when any exception thrown by the expression will be caught by a
   * TryStatement.
   */
  tryClause: 32
};


/***/ }),
/* 445 */
/*!**************************************************!*\
  !*** ./node_modules/jshint/src/scope-manager.js ***!
  \**************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var _      = __webpack_require__(/*! lodash */ 158);
var events = __webpack_require__(/*! events */ 133);

// Used to denote membership in lookup tables (a primitive value such as `true`
// would be silently rejected for the property name "__proto__" in some
// environments)
var marker = {};

/**
 * A factory function for creating scope managers. A scope manager tracks
 * variables and JSHint "labels", detecting when variables are referenced
 * (through "usages").
 *
 * Note that in this context, the term "label" describes an implementation
 * detail of JSHint and is not related to the ECMAScript language construct of
 * the same name. Where possible, the former is referred to as a "JSHint label"
 * to avoid confusion.
 *
 * @param {object} state - the global state object (see `state.js`)
 * @param {Array} predefined - a set of JSHint label names for built-in
 *                             bindings provided by the environment
 * @param {object} exported - a hash for JSHint label names that are intended
 *                            to be referenced in contexts beyond the current
 *                            program code
 * @param {object} declared - a hash for JSHint label names that were defined
 *                            as global bindings via linting configuration
 *
 * @returns {object} - a scope manager
 */
var scopeManager = function(state, predefined, exported, declared) {

  var _current;
  var _scopeStack = [];

  function _newScope(type) {
    _current = {
      "(labels)": Object.create(null),
      "(usages)": Object.create(null),
      "(breakLabels)": Object.create(null),
      "(parent)": _current,
      "(type)": type,
      "(params)": (type === "functionparams" || type === "catchparams") ? [] : null
    };
    _scopeStack.push(_current);
  }

  _newScope("global");
  _current["(predefined)"] = predefined;

  var _currentFunctBody = _current; // this is the block after the params = function

  var usedPredefinedAndGlobals = Object.create(null);
  var impliedGlobals = Object.create(null);
  var unuseds = [];
  var emitter = new events.EventEmitter();

  function warning(code, token) {
    emitter.emit("warning", {
      code: code,
      token: token,
      data: _.slice(arguments, 2)
    });
  }

  function error(code, token) {
    emitter.emit("warning", {
      code: code,
      token: token,
      data: _.slice(arguments, 2)
    });
  }

  function _setupUsages(labelName) {
    if (!_current["(usages)"][labelName]) {
      _current["(usages)"][labelName] = {
        "(modified)": [],
        "(reassigned)": [],
        "(tokens)": []
      };
    }
  }

  var _getUnusedOption = function(unused_opt) {
    if (unused_opt === undefined) {
      unused_opt = state.option.unused;
    }

    if (unused_opt === true) {
      unused_opt = "last-param";
    }

    return unused_opt;
  };

  var _warnUnused = function(name, tkn, type, unused_opt) {
    var line = tkn.line;
    var chr  = tkn.from;
    var raw_name = tkn.raw_text || name;

    unused_opt = _getUnusedOption(unused_opt);

    var warnable_types = {
      "vars": ["var"],
      "last-param": ["var", "param"],
      "strict": ["var", "param", "last-param"]
    };

    if (unused_opt) {
      if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) {
        warning("W098", { line: line, from: chr }, raw_name);
      }
    }

    // inconsistent - see gh-1894
    if (unused_opt || type === "var") {
      unuseds.push({
        name: name,
        line: line,
        character: chr
      });
    }
  };

  /**
   * Check the current scope for unused identifiers
   */
  function _checkForUnused() {
    // function parameters are validated by a dedicated function
    // assume that parameters are the only thing declared in the param scope
    if (_current["(type)"] === "functionparams") {
      _checkParams();
      return;
    }
    var curentLabels = _current["(labels)"];
    for (var labelName in curentLabels) {
      if (curentLabels[labelName]["(type)"] !== "exception" &&
        curentLabels[labelName]["(unused)"]) {
        _warnUnused(labelName, curentLabels[labelName]["(token)"], "var");
      }
    }
  }

  /**
   * Check the current scope for unused parameters and issue warnings as
   * necessary. This function may only be invoked when the current scope is a
   * "function parameter" scope.
   */
  function _checkParams() {
    var params = _current["(params)"];

    if (!params) {
      return;
    }

    var param = params.pop();
    var unused_opt;

    while (param) {
      var label = _current["(labels)"][param];

      unused_opt = _getUnusedOption(state.funct["(unusedOption)"]);

      // 'undefined' is a special case for the common pattern where `undefined`
      // is used as a formal parameter name to defend against global
      // re-assignment, e.g.
      //
      //     (function(window, undefined) {
      //     })();
      if (param === "undefined")
        return;

      if (label["(unused)"]) {
        _warnUnused(param, label["(token)"], "param", state.funct["(unusedOption)"]);
      } else if (unused_opt === "last-param") {
        return;
      }

      param = params.pop();
    }
  }

  /**
   * Find the relevant JSHint label's scope. The owning scope is located by
   * first inspecting the current scope and then moving "downward" through the
   * stack of scopes.
   *
   * @param {string} labelName - the value of the identifier
   *
   * @returns {Object} - the scope in which the JSHint label was found
   */
  function _getLabel(labelName) {
    for (var i = _scopeStack.length - 1 ; i >= 0; --i) {
      var scopeLabels = _scopeStack[i]["(labels)"];
      if (scopeLabels[labelName]) {
        return scopeLabels;
      }
    }
  }

  /**
   * Determine if a given JSHint label name has been referenced within the
   * current function or any function defined within.
   *
   * @param {string} labelName - the value of the identifier
   *
   * @returns {boolean}
   */
  function usedSoFarInCurrentFunction(labelName) {
    for (var i = _scopeStack.length - 1; i >= 0; i--) {
      var current = _scopeStack[i];
      if (current["(usages)"][labelName]) {
        return current["(usages)"][labelName];
      }
      if (current === _currentFunctBody) {
        break;
      }
    }
    return false;
  }

  function _checkOuterShadow(labelName, token) {

    // only check if shadow is outer
    if (state.option.shadow !== "outer") {
      return;
    }

    var isGlobal = _currentFunctBody["(type)"] === "global",
      isNewFunction = _current["(type)"] === "functionparams";

    var outsideCurrentFunction = !isGlobal;
    for (var i = 0; i < _scopeStack.length; i++) {
      var stackItem = _scopeStack[i];

      if (!isNewFunction && _scopeStack[i + 1] === _currentFunctBody) {
        outsideCurrentFunction = false;
      }
      if (outsideCurrentFunction && stackItem["(labels)"][labelName]) {
        warning("W123", token, labelName);
      }
      if (stackItem["(breakLabels)"][labelName]) {
        warning("W123", token, labelName);
      }
    }
  }

  function _latedefWarning(type, labelName, token) {
    var isFunction;

    if (state.option.latedef) {
      isFunction = type === "function" || type === "generator function" ||
        type === "async function";

      // if either latedef is strict and this is a function
      //    or this is not a function
      if ((state.option.latedef === true && isFunction) || !isFunction) {
        warning("W003", token, labelName);
      }
    }
  }

  var scopeManagerInst = {

    on: function(names, listener) {
      names.split(" ").forEach(function(name) {
        emitter.on(name, listener);
      });
    },

    isPredefined: function(labelName) {
      return !this.has(labelName) && _.has(_scopeStack[0]["(predefined)"], labelName);
    },

    /**
     * Create a new scope within the current scope. As the topmost value, the
     * new scope will be interpreted as the current scope until it is
     * exited--see the `unstack` method.
     *
     * @param {string} [type] - The type of the scope. Valid values are
     *                          "functionparams", "catchparams" and
     *                          "functionouter"
     */
    stack: function(type) {
      var previousScope = _current;
      _newScope(type);

      if (!type && previousScope["(type)"] === "functionparams") {

        _current["(isFuncBody)"] = true;
        _currentFunctBody = _current;
      }
    },

    /**
     * Valldate all binding references and declarations in the current scope
     * and set the next scope on the stack as the active scope.
     */
    unstack: function() {
      // jshint proto: true
      var subScope = _scopeStack.length > 1 ? _scopeStack[_scopeStack.length - 2] : null;
      var isUnstackingFunctionBody = _current === _currentFunctBody,
        isUnstackingFunctionParams = _current["(type)"] === "functionparams",
        isUnstackingFunctionOuter = _current["(type)"] === "functionouter";

      var i, j, isImmutable, isFunction;
      var currentUsages = _current["(usages)"];
      var currentLabels = _current["(labels)"];
      var usedLabelNameList = Object.keys(currentUsages);

      /* istanbul ignore if */
      if (currentUsages.__proto__ && usedLabelNameList.indexOf("__proto__") === -1) {
        usedLabelNameList.push("__proto__");
      }

      for (i = 0; i < usedLabelNameList.length; i++) {
        var usedLabelName = usedLabelNameList[i];

        var usage = currentUsages[usedLabelName];
        var usedLabel = currentLabels[usedLabelName];
        if (usedLabel) {
          var usedLabelType = usedLabel["(type)"];
          isImmutable = usedLabelType === "const" || usedLabelType === "import";

          if (usedLabel["(useOutsideOfScope)"] && !state.option.funcscope) {
            var usedTokens = usage["(tokens)"];
            for (j = 0; j < usedTokens.length; j++) {
              // Keep the consistency of https://github.com/jshint/jshint/issues/2409
              if (usedLabel["(function)"] === usedTokens[j]["(function)"]) {
                error("W038", usedTokens[j], usedLabelName);
              }
            }
          }

          // mark the label used
          _current["(labels)"][usedLabelName]["(unused)"] = false;

          // check for modifying a const
          if (isImmutable && usage["(modified)"]) {
            for (j = 0; j < usage["(modified)"].length; j++) {
              error("E013", usage["(modified)"][j], usedLabelName);
            }
          }

          isFunction = usedLabelType === "function" ||
            usedLabelType === "generator function" ||
            usedLabelType === "async function";

          // check for re-assigning a function declaration
          if ((isFunction || usedLabelType === "class") && usage["(reassigned)"]) {
            for (j = 0; j < usage["(reassigned)"].length; j++) {
              if (!usage["(reassigned)"][j].ignoreW021) {
                warning("W021", usage["(reassigned)"][j], usedLabelName, usedLabelType);
              }
            }
          }
          continue;
        }

        if (subScope) {
          var labelType = this.labeltype(usedLabelName);
          isImmutable = labelType === "const" ||
            (labelType === null && _scopeStack[0]["(predefined)"][usedLabelName] === false);
          if (isUnstackingFunctionOuter && !isImmutable) {
            if (!state.funct["(outerMutables)"]) {
              state.funct["(outerMutables)"] = [];
            }
            state.funct["(outerMutables)"].push(usedLabelName);
          }

          // not exiting the global scope, so copy the usage down in case its an out of scope usage
          if (!subScope["(usages)"][usedLabelName]) {
            subScope["(usages)"][usedLabelName] = usage;
            if (isUnstackingFunctionBody) {
              subScope["(usages)"][usedLabelName]["(onlyUsedSubFunction)"] = true;
            }
          } else {
            var subScopeUsage = subScope["(usages)"][usedLabelName];
            subScopeUsage["(modified)"] = subScopeUsage["(modified)"].concat(usage["(modified)"]);
            subScopeUsage["(tokens)"] = subScopeUsage["(tokens)"].concat(usage["(tokens)"]);
            subScopeUsage["(reassigned)"] =
              subScopeUsage["(reassigned)"].concat(usage["(reassigned)"]);
          }
        } else {
          // this is exiting global scope, so we finalise everything here - we are at the end of the file
          if (typeof _current["(predefined)"][usedLabelName] === "boolean") {

            // remove the declared token, so we know it is used
            delete declared[usedLabelName];

            // note it as used so it can be reported
            usedPredefinedAndGlobals[usedLabelName] = marker;

            // check for re-assigning a read-only (set to false) predefined
            if (_current["(predefined)"][usedLabelName] === false && usage["(reassigned)"]) {
              for (j = 0; j < usage["(reassigned)"].length; j++) {
                if (!usage["(reassigned)"][j].ignoreW020) {
                  warning("W020", usage["(reassigned)"][j]);
                }
              }
            }
          }
          else {
            // label usage is not predefined and we have not found a declaration
            // so report as undeclared
            for (j = 0; j < usage["(tokens)"].length; j++) {
              var undefinedToken = usage["(tokens)"][j];
              // if its not a forgiven undefined (e.g. typof x)
              if (!undefinedToken.forgiveUndef) {
                // if undef is on and undef was on when the token was defined
                if (state.option.undef && !undefinedToken.ignoreUndef) {
                  warning("W117", undefinedToken, usedLabelName);
                }
                if (impliedGlobals[usedLabelName]) {
                  impliedGlobals[usedLabelName].line.push(undefinedToken.line);
                } else {
                  impliedGlobals[usedLabelName] = {
                    name: usedLabelName,
                    line: [undefinedToken.line]
                  };
                }
              }
            }
          }
        }
      }

      // if exiting the global scope, we can warn about declared globals that haven't been used yet
      if (!subScope) {
        Object.keys(declared)
          .forEach(function(labelNotUsed) {
            _warnUnused(labelNotUsed, declared[labelNotUsed], "var");
          });
      }

      // If this is not a function boundary, transfer function-scoped labels to
      // the parent block (a rough simulation of variable hoisting). Previously
      // existing labels in the parent block should take precedence so that things and stuff.
      if (subScope && !isUnstackingFunctionBody &&
        !isUnstackingFunctionParams && !isUnstackingFunctionOuter) {
        var labelNames = Object.keys(currentLabels);
        for (i = 0; i < labelNames.length; i++) {

          var defLabelName = labelNames[i];
          var defLabel = currentLabels[defLabelName];

          if (!defLabel["(blockscoped)"] && defLabel["(type)"] !== "exception") {
            var shadowed = subScope["(labels)"][defLabelName];

            // Do not overwrite a label if it exists in the parent scope
            // because it is shared by adjacent blocks. Copy the `unused`
            // property so that any references found within the current block
            // are counted toward that higher-level declaration.
            if (shadowed) {
              shadowed["(unused)"] &= defLabel["(unused)"];

            // "Hoist" the variable to the parent block, decorating the label
            // so that future references, though technically valid, can be
            // reported as "out-of-scope" in the absence of the `funcscope`
            // option.
            } else {
              defLabel["(useOutsideOfScope)"] =
                // Do not warn about out-of-scope usages in the global scope
                _currentFunctBody["(type)"] !== "global" &&
                // When a higher scope contains a binding for the label, the
                // label is a re-declaration and should not prompt "used
                // out-of-scope" warnings.
                !this.funct.has(defLabelName, { excludeCurrent: true });

              subScope["(labels)"][defLabelName] = defLabel;
            }

            delete currentLabels[defLabelName];
          }
        }
      }

      _checkForUnused();

      _scopeStack.pop();
      if (isUnstackingFunctionBody) {
        _currentFunctBody = _scopeStack[_.findLastIndex(_scopeStack, function(scope) {
          // if function or if global (which is at the bottom so it will only return true if we call back)
          return scope["(isFuncBody)"] || scope["(type)"] === "global";
        })];
      }

      _current = subScope;
    },

    /**
     * Add a function parameter to the current scope.
     *
     * @param {string} labelName - the value of the identifier
     * @param {Token} token
     * @param {string} [type] - JSHint label type; defaults to "param"
     */
    addParam: function(labelName, token, type) {
      type = type || "param";

      if (type === "exception") {
        // if defined in the current function
        var previouslyDefinedLabelType = this.funct.labeltype(labelName);
        if (previouslyDefinedLabelType && previouslyDefinedLabelType !== "exception") {
          // and has not been used yet in the current function scope
          if (!state.option.node) {
            warning("W002", state.tokens.next, labelName);
          }
        }

        if (state.isStrict() && (labelName === "arguments" || labelName === "eval")) {
          warning("E008", token);
        }
      }

      // The variable was declared in the current scope
      if (_.has(_current["(labels)"], labelName)) {
        _current["(labels)"][labelName].duplicated = true;

      // The variable was declared in an outer scope
      } else {
        // if this scope has the variable defined, it's a re-definition error
        _checkOuterShadow(labelName, token);

        _current["(labels)"][labelName] = {
          "(type)" : type,
          "(token)": token,
          "(unused)": true };

        _current["(params)"].push(labelName);
      }

      if (_.has(_current["(usages)"], labelName)) {
        var usage = _current["(usages)"][labelName];
        // if its in a sub function it is not necessarily an error, just latedef
        if (usage["(onlyUsedSubFunction)"]) {
          _latedefWarning(type, labelName, token);
        } else {
          // this is a clear illegal usage for block scoped variables
          warning("E056", token, labelName, type);
        }
      }
    },

    validateParams: function(isArrow) {
      var isStrict = state.isStrict();
      var currentFunctParamScope = _currentFunctBody["(parent)"];
      // From ECMAScript 2017:
      //
      // > 14.1.2Static Semantics: Early Errors
      // >
      // > [...]
      // > - It is a Syntax Error if IsSimpleParameterList of
      // >   FormalParameterList is false and BoundNames of FormalParameterList
      // >   contains any duplicate elements.
      var isSimple = state.funct['(hasSimpleParams)'];
      // Method definitions are defined in terms of UniqueFormalParameters, so
      // they cannot support duplicate parameter names regardless of strict
      // mode.
      var isMethod = state.funct["(method)"];

      if (!currentFunctParamScope["(params)"]) {
        return;
      }

      currentFunctParamScope["(params)"].forEach(function(labelName) {
        var label = currentFunctParamScope["(labels)"][labelName];

        if (label.duplicated) {
          if (isStrict || isArrow || isMethod || !isSimple) {
            warning("E011", label["(token)"], labelName);
          } else if (state.option.shadow !== true) {
            warning("W004", label["(token)"], labelName);
          }
        }

        if (isStrict && (labelName === "arguments" || labelName === "eval")) {
          warning("E008", label["(token)"]);
        }
      });
    },

    getUsedOrDefinedGlobals: function() {
      // jshint proto: true
      var list = Object.keys(usedPredefinedAndGlobals);

      // If `__proto__` is used as a global variable name, its entry in the
      // lookup table may not be enumerated by `Object.keys` (depending on the
      // environment).
      /* istanbul ignore if */
      if (usedPredefinedAndGlobals.__proto__ === marker &&
        list.indexOf("__proto__") === -1) {
        list.push("__proto__");
      }

      return list;
    },

    /**
     * Get an array of implied globals
     *
     * @returns {Array.<{ name: string, line: Array.<number>}>}
     */
    getImpliedGlobals: function() {
      // jshint proto: true
      var values = _.values(impliedGlobals);
      var hasProto = false;

      // If `__proto__` is an implied global variable, its entry in the lookup
      // table may not be enumerated by `_.values` (depending on the
      // environment).
      if (impliedGlobals.__proto__) {
        hasProto = values.some(function(value) {
          return value.name === "__proto__";
        });

        /* istanbul ignore if */
        if (!hasProto) {
          values.push(impliedGlobals.__proto__);
        }
      }

      return values;
    },

    /**
     * Get an array of objects describing unused bindings.
     *
     * @returns {Array<Object>}
     */
    getUnuseds: function() {
      return unuseds;
    },

    /**
     * Determine if a given name has been defined in the current scope or any
     * lower scope.
     *
     * @param {string} labelName - the value of the identifier
     *
     * @return {boolean}
     */
    has: function(labelName) {
      return Boolean(_getLabel(labelName));
    },

    /**
     * Retrieve  described by `labelName` or null
     *
     * @param {string} labelName - the value of the identifier
     *
     * @returns {string|null} - the type of the JSHint label or `null` if no
     *                          such label exists
     */
    labeltype: function(labelName) {
      var scopeLabels = _getLabel(labelName);
      if (scopeLabels) {
        return scopeLabels[labelName]["(type)"];
      }
      return null;
    },

    /**
     * For the exported options, indicating a variable is used outside the file
     *
     * @param {string} labelName - the value of the identifier
     */
    addExported: function(labelName) {
      var globalLabels = _scopeStack[0]["(labels)"];
      if (_.has(declared, labelName)) {
        // remove the declared token, so we know it is used
        delete declared[labelName];
      } else if (_.has(globalLabels, labelName)) {
        globalLabels[labelName]["(unused)"] = false;
      } else {
        for (var i = 1; i < _scopeStack.length; i++) {
          var scope = _scopeStack[i];
          // if `scope.(type)` is not defined, it is a block scope
          if (!scope["(type)"]) {
            if (_.has(scope["(labels)"], labelName) &&
                !scope["(labels)"][labelName]["(blockscoped)"]) {
              scope["(labels)"][labelName]["(unused)"] = false;
              return;
            }
          } else {
            break;
          }
        }
        exported[labelName] = true;
      }
    },

    /**
     * Mark a JSHint label as "exported" by an ES2015 module
     *
     * @param {string} labelName - the value of the identifier
     * @param {object} token
     */
    setExported: function(labelName, token) {
      this.block.use(labelName, token);
    },

    /**
     * Mark a JSHint label as "initialized." This is necessary to enforce the
     * "temporal dead zone" (TDZ) of block-scoped bindings which are not
     * hoisted.
     *
     * @param {string} labelName - the value of the identifier
     */
    initialize: function(labelName) {
      if (_current["(labels)"][labelName]) {
        _current["(labels)"][labelName]["(initialized)"] = true;
      }
    },

    /**
     * Create a new JSHint label and add it to the current scope. Delegates to
     * the internal `block.add` or `func.add` methods depending on the type.
     * Produces warnings and errors as necessary.
     *
     * @param {string} labelName
     * @param {Object} opts
     * @param {String} opts.type - the type of the label e.g. "param", "var",
     *                             "let, "const", "import", "function",
     *                             "generator function", "async function",
     *                             "async generator function"
     * @param {object} opts.token - the token pointing at the declaration
     * @param {boolean} opts.initialized - whether the binding should be
     *                                     created in an "initialized" state.
     */
    addlabel: function(labelName, opts) {

      var type  = opts.type;
      var token = opts.token;
      var isblockscoped = type === "let" || type === "const" ||
        type === "class" || type === "import" || type === "generator function" ||
        type === "async function" || type === "async generator function";
      var ishoisted = type === "function" || type === "generator function" ||
        type === "async function" || type === "import";
      var isexported    = (isblockscoped ? _current : _currentFunctBody)["(type)"] === "global" &&
                          _.has(exported, labelName);

      // outer shadow check (inner is only on non-block scoped)
      _checkOuterShadow(labelName, token);

      if (state.isStrict() && (labelName === "arguments" || labelName === "eval")) {
        warning("E008", token);
      }

      if (isblockscoped) {

        var declaredInCurrentScope = _current["(labels)"][labelName];
        // for block scoped variables, params are seen in the current scope as the root function
        // scope, so check these too.
        if (!declaredInCurrentScope && _current === _currentFunctBody &&
          _current["(type)"] !== "global") {
          declaredInCurrentScope = !!_currentFunctBody["(parent)"]["(labels)"][labelName];
        }

        // if its not already defined (which is an error, so ignore) and is used in TDZ
        if (!declaredInCurrentScope && _current["(usages)"][labelName]) {
          var usage = _current["(usages)"][labelName];
          // if its in a sub function it is not necessarily an error, just latedef
          if (usage["(onlyUsedSubFunction)"] || ishoisted) {
            _latedefWarning(type, labelName, token);
          } else if (!ishoisted) {
            // this is a clear illegal usage for block scoped variables
            warning("E056", token, labelName, type);
          }
        }

        // If this scope has already declared a binding with the same name,
        // then this represents a redeclaration error if:
        //
        // 1. it is a "hoisted" block-scoped binding within a block. For
        //    instance: generator functions may be redeclared in the global
        //    scope but not within block statements
        // 2. this is not a "hoisted" block-scoped binding
        if (declaredInCurrentScope &&
          (!ishoisted || (_current["(type)"] !== "global" || type === "import"))) {
          warning("E011", token, labelName);
        }
        else if (state.option.shadow === "outer") {

          // if shadow is outer, for block scope we want to detect any shadowing within this function
          if (scopeManagerInst.funct.has(labelName)) {
            warning("W004", token, labelName);
          }
        }

        scopeManagerInst.block.add(
          labelName, type, token, !isexported, opts.initialized
        );

      } else {

        var declaredInCurrentFunctionScope = scopeManagerInst.funct.has(labelName);

        // check for late definition, ignore if already declared
        if (!declaredInCurrentFunctionScope && usedSoFarInCurrentFunction(labelName)) {
          _latedefWarning(type, labelName, token);
        }

        // defining with a var or a function when a block scope variable of the same name
        // is in scope is an error
        if (scopeManagerInst.funct.has(labelName, { onlyBlockscoped: true })) {
          warning("E011", token, labelName);
        } else if (state.option.shadow !== true) {
          // now since we didn't get any block scope variables, test for var/function
          // shadowing
          if (declaredInCurrentFunctionScope && labelName !== "__proto__") {

            // see https://github.com/jshint/jshint/issues/2400
            if (_currentFunctBody["(type)"] !== "global") {
              warning("W004", token, labelName);
            }
          }
        }

        scopeManagerInst.funct.add(labelName, type, token, !isexported);

        if (_currentFunctBody["(type)"] === "global" && !state.impliedClosure()) {
          usedPredefinedAndGlobals[labelName] = marker;
        }
      }
    },

    funct: {
      /**
       * Return the type of the provided JSHint label given certain options
       *
       * @param {string} labelName
       * @param {Object=} [options]
       * @param {boolean} [options.onlyBlockscoped] - only include block scoped
       *                                              labels
       * @param {boolean} [options.excludeParams] - exclude the param scope
       * @param {boolean} [options.excludeCurrent] - exclude the current scope
       *
       * @returns {String}
       */
      labeltype: function(labelName, options) {
        var onlyBlockscoped = options && options.onlyBlockscoped;
        var excludeParams = options && options.excludeParams;
        var currentScopeIndex = _scopeStack.length - (options && options.excludeCurrent ? 2 : 1);
        for (var i = currentScopeIndex; i >= 0; i--) {
          var current = _scopeStack[i];
          if (current["(labels)"][labelName] &&
            (!onlyBlockscoped || current["(labels)"][labelName]["(blockscoped)"])) {
            return current["(labels)"][labelName]["(type)"];
          }
          var scopeCheck = excludeParams ? _scopeStack[ i - 1 ] : current;
          if (scopeCheck && scopeCheck["(type)"] === "functionparams") {
            return null;
          }
        }
        return null;
      },

      /**
       * Determine whether a `break` statement label exists in the function
       * scope.
       *
       * @param {string} labelName - the value of the identifier
       *
       * @returns {boolean}
       */
      hasBreakLabel: function(labelName) {
        for (var i = _scopeStack.length - 1; i >= 0; i--) {
          var current = _scopeStack[i];

          if (current["(breakLabels)"][labelName]) {
            return true;
          }
          if (current["(type)"] === "functionparams") {
            return false;
          }
        }
        return false;
      },

      /**
       * Determine if a given name has been defined in the current function
       * scope.
       *
       * @param {string} labelName - the value of the identifier
       * @param {object} options - options as supported by the
       *                           `funct.labeltype` method
       *
       * @return {boolean}
       */
      has: function(labelName, options) {
        return Boolean(this.labeltype(labelName, options));
      },

      /**
       * Create a new function-scoped JSHint label and add it to the current
       * scope. See the `block.add` method for coresponding logic to create
       * block-scoped JSHint labels.
       *
       * @param {string} labelName - the value of the identifier
       * @param {string} type - the type of the JSHint label; either "function"
       *                        or "var"
       * @param {object} tok - the token that triggered the definition
       * @param {boolean} unused - `true` if the JSHint label has not been
       *                           referenced
       */
      add: function(labelName, type, tok, unused) {
        _current["(labels)"][labelName] = {
          "(type)" : type,
          "(token)": tok,
          "(blockscoped)": false,
          "(function)": _currentFunctBody,
          "(unused)": unused };
      }
    },

    block: {

      /**
       * Determine whether the current block scope is the global scope.
       *
       * @returns Boolean
       */
      isGlobal: function() {
        return _current["(type)"] === "global";
      },

      /**
       * Resolve a reference to a binding and mark the corresponding JSHint
       * label as "used."
       *
       * @param {string} labelName - the value of the identifier
       * @param {object} token - the token value that triggered the reference
       */
      use: function(labelName, token) {
        // If the name resolves to a parameter of the current function, then do
        // not store usage. This is because in cases such as the following:
        //
        //     function(a) {
        //       var a;
        //       a = a;
        //     }
        //
        // the usage of `a` will resolve to the parameter, not to the unset
        // variable binding.
        var paramScope = _currentFunctBody["(parent)"];
        if (paramScope && paramScope["(labels)"][labelName] &&
          paramScope["(labels)"][labelName]["(type)"] === "param") {

          // then check its not declared by a block scope variable
          if (!scopeManagerInst.funct.has(labelName,
                { excludeParams: true, onlyBlockscoped: true })) {
            paramScope["(labels)"][labelName]["(unused)"] = false;
          }
        }

        if (token && (state.ignored.W117 || state.option.undef === false)) {
          token.ignoreUndef = true;
        }

        _setupUsages(labelName);

        _current["(usages)"][labelName]["(onlyUsedSubFunction)"] = false;

        if (token) {
          token["(function)"] = _currentFunctBody;
          _current["(usages)"][labelName]["(tokens)"].push(token);
        }

        // Block-scoped bindings can't be used within their initializer due to
        // "temporal dead zone" (TDZ) restrictions.
        var label = _current["(labels)"][labelName];
        if (label && label["(blockscoped)"] && !label["(initialized)"]) {
          error("E056", token, labelName, label["(type)"]);
        }
      },

      reassign: function(labelName, token) {
        token.ignoreW020 = state.ignored.W020;
        token.ignoreW021 = state.ignored.W021;

        this.modify(labelName, token);

        _current["(usages)"][labelName]["(reassigned)"].push(token);
      },

      modify: function(labelName, token) {

        _setupUsages(labelName);

        _current["(usages)"][labelName]["(onlyUsedSubFunction)"] = false;
        _current["(usages)"][labelName]["(modified)"].push(token);
      },

      /**
       * Create a new block-scoped JSHint label and add it to the current
       * scope. See the `funct.add` method for coresponding logic to create
       * function-scoped JSHint labels.
       *
       * @param {string} labelName - the value of the identifier
       * @param {string} type - the type of the JSHint label; one of "class",
       *                        "const", "function", "import", or "let"
       * @param {object} tok - the token that triggered the definition
       * @param {boolean} unused - `true` if the JSHint label has not been
       *                           referenced
       * @param {boolean} initialized - `true` if the JSHint label has been
       *                                initialized (as is the case with JSHint
       *                                labels created via `import`
       *                                declarations)
       */
      add: function(labelName, type, tok, unused, initialized) {
        _current["(labels)"][labelName] = {
          "(type)" : type,
          "(token)": tok,
          "(initialized)": !!initialized,
          "(blockscoped)": true,
          "(unused)": unused };
      },

      addBreakLabel: function(labelName, opts) {
        var token = opts.token;
        if (scopeManagerInst.funct.hasBreakLabel(labelName)) {
          warning("E011", token, labelName);
        }
        else if (state.option.shadow === "outer") {
          if (scopeManagerInst.funct.has(labelName)) {
            warning("W004", token, labelName);
          } else {
            _checkOuterShadow(labelName, token);
          }
        }
        _current["(breakLabels)"][labelName] = token;
      }
    }
  };
  return scopeManagerInst;
};

module.exports = scopeManager;


/***/ }),
/* 446 */
/*!********************************************!*\
  !*** ./node_modules/jshint/src/options.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// These are the JSHint boolean options.
exports.bool = {
  enforcing: {

    /**
     * This option prohibits the use of bitwise operators such as `^` (XOR),
     * `|` (OR) and others. Bitwise operators are very rare in JavaScript
     * programs and quite often `&` is simply a mistyped `&&`.
     */
    bitwise     : true,

    /**
     *
     * This options prohibits overwriting prototypes of native objects such as
     * `Array`, `Date` and so on.
     *
     *     // jshint freeze:true
     *     Array.prototype.count = function (value) { return 4; };
     *     // -> Warning: Extending prototype of native object: 'Array'.
     */
    freeze      : true,

    /**
     * This option allows you to force all variable names to use either
     * camelCase style or UPPER_CASE with underscores.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    camelcase   : true,

    /**
     * This option requires you to always put curly braces around blocks in
     * loops and conditionals. JavaScript allows you to omit curly braces when
     * the block consists of only one statement, for example:
     *
     *     while (day)
     *       shuffle();
     *
     * However, in some circumstances, it can lead to bugs (you'd think that
     * `sleep()` is a part of the loop while in reality it is not):
     *
     *     while (day)
     *       shuffle();
     *       sleep();
     */
    curly       : true,

    /**
     * This options prohibits the use of `==` and `!=` in favor of `===` and
     * `!==`. The former try to coerce values before comparing them which can
     * lead to some unexpected results. The latter don't do any coercion so
     * they are generally safer. If you would like to learn more about type
     * coercion in JavaScript, we recommend [Truth, Equality and
     * JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/)
     * by Angus Croll.
     */
    eqeqeq      : true,

    /**
     * This option enables warnings about the use of identifiers which are
     * defined in future versions of JavaScript. Although overwriting them has
     * no effect in contexts where they are not implemented, this practice can
     * cause issues when migrating codebases to newer versions of the language.
     */
    futurehostile: true,

    /**
     * This option tells JSHint that your code needs to adhere to ECMAScript 3
     * specification. Use this option if you need your program to be executable
     * in older browsers—such as Internet Explorer 6/7/8/9—and other legacy
     * JavaScript environments.
     *
     * @deprecated Use `esversion: 3` instead.
     */
    es3         : true,

    /**
     * This option enables syntax first defined in [the ECMAScript 5.1
     * specification](http://es5.github.io/). This includes allowing reserved
     * keywords as object properties.
     *
     * @deprecated Use `esversion: 5` instead.
     */
    es5         : true,

    /**
     * This option requires all `for in` loops to filter object's items. The
     * for in statement allows for looping through the names of all of the
     * properties of an object including those inherited through the prototype
     * chain. This behavior can lead to unexpected items in your object so it
     * is generally safer to always filter inherited properties out as shown in
     * the example:
     *
     *     for (key in obj) {
     *       if (obj.hasOwnProperty(key)) {
     *         // We are sure that obj[key] belongs to the object and was not inherited.
     *       }
     *     }
     *
     * For more in-depth understanding of `for in` loops in JavaScript, read
     * [Exploring JavaScript for-in
     * loops](http://javascriptweblog.wordpress.com/2011/01/04/exploring-javascript-for-in-loops/)
     * by Angus Croll.
     */
    forin       : true,

    /**
     * This option prohibits the use of immediate function invocations without
     * wrapping them in parentheses. Wrapping parentheses assists readers of
     * your code in understanding that the expression is the result of a
     * function, and not the function itself.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    immed       : true,

    /**
     * This option prohibits unnecessary clauses within `switch` statements,
     * e.g.
     *
     *     switch (x) {
     *       case 1:
     *       default:
     *         z();
     *     }
     *
     * While clauses like these are techincally valid, they do not effect
     * program behavior and may indicate an erroneous refactoring.
     */
    leanswitch  : true,

    /**
     * This option requires you to capitalize names of constructor functions.
     * Capitalizing functions that are intended to be used with `new` operator
     * is just a convention that helps programmers to visually distinguish
     * constructor functions from other types of functions to help spot
     * mistakes when using `this`.
     *
     * Not doing so won't break your code in any browsers or environments but
     * it will be a bit harder to figure out—by reading the code—if the
     * function was supposed to be used with or without new. And this is
     * important because when the function that was intended to be used with
     * `new` is used without it, `this` will point to the global object instead
     * of a new object.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    newcap      : true,

    /**
     * This option prohibits the use of `arguments.caller` and
     * `arguments.callee`.  Both `.caller` and `.callee` make quite a few
     * optimizations impossible so they were deprecated in future versions of
     * JavaScript. In fact, ECMAScript 5 forbids the use of `arguments.callee`
     * in strict mode.
     */
    noarg       : true,

    /**
     * This option prohibits the use of the comma operator. When misused, the
     * comma operator can obscure the value of a statement and promote
     * incorrect code.
     */
    nocomma     : true,

    /**
     * This option warns when you have an empty block in your code. JSLint was
     * originally warning for all empty blocks and we simply made it optional.
     * There were no studies reporting that empty blocks in JavaScript break
     * your code in any way.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    noempty     : true,

    /**
     * This option warns about "non-breaking whitespace" characters. These
     * characters can be entered with option-space on Mac computers and have a
     * potential of breaking non-UTF8 web pages.
     */
    nonbsp      : true,

    /**
     * This option prohibits the use of constructor functions for side-effects.
     * Some people like to call constructor functions without assigning its
     * result to any variable:
     *
     *     new MyConstructor();
     *
     * There is no advantage in this approach over simply calling
     * `MyConstructor` since the object that the operator `new` creates isn't
     * used anywhere so you should generally avoid constructors like this one.
     */
    nonew       : true,


    /**
     * Async functions resolve on their return value. In most cases, this makes
     * returning the result of an AwaitExpression (which is itself a Promise
     * instance) unnecessary. For clarity, it's often preferable to return the
     * result of the asynchronous operation directly. The notable exception is
     * within the `try` clause of a TryStatement--for more, see "await vs
     * return vs return await":
     *
     * https://jakearchibald.com/2017/await-vs-return-vs-return-await/
     */
    noreturnawait: true,

    /**
     * This option enables warnings for regular expressions which do not
     * include the "u" flag. The "u" flag extends support for Unicode and also
     * enables more strict parsing rules. JSHint will enforce these rules even
     * if it is executed in a JavaScript engine which does not support the "u"
     * flag.
     */
    regexpu     : true,

    /**
     * This option prohibits the use of explicitly undeclared variables. This
     * option is very useful for spotting leaking and mistyped variables.
     *
     *     // jshint undef:true
     *
     *     function test() {
     *       var myVar = 'Hello, World';
     *       console.log(myvar); // Oops, typoed here. JSHint with undef will complain
     *     }
     *
     * If your variable is defined in another file, you can use the `global`
     * directive to tell JSHint about it.
     */
    undef       : true,

    /**
     * This option prohibits the use of the grouping operator when it is not
     * strictly required. Such usage commonly reflects a misunderstanding of
     * unary operators, for example:
     *
     *     // jshint singleGroups: true
     *
     *     delete(obj.attr); // Warning: Unnecessary grouping operator.
     */
    singleGroups: false,

    /**
     * When set to true, the use of VariableStatements are forbidden.
     * For example:
     *
     *     // jshint varstmt: true
     *
     *     var a; // Warning: `var` declarations are forbidden. Use `let` or `const` instead.
     */
    varstmt: false,

    /**
     * This option is a short hand for the most strict JSHint configuration as
     * available in JSHint version 2.6.3. It enables all enforcing options and
     * disables all relaxing options that were defined in that release.
     *
     * @deprecated The option cannot be maintained without automatically opting
     *             users in to new features. This can lead to unexpected
     *             warnings/errors in when upgrading between minor versions of
     *             JSHint.
     */
    enforceall : false,

    /**
     * This option warns when a comma is not placed after the last element in an
     * array or object literal. Due to bugs in old versions of IE, trailing
     * commas used to be discouraged, but since ES5 their semantics were
     * standardized. (See
     * [#11.1.4](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.4) and
     * [#11.1.5](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.5).)
     * Now, they help to prevent the same [visual
     * ambiguities](http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.2)
     * that the strict usage of semicolons helps prevent.
     *
     * For example, this code might have worked last Tuesday:
     *
     *     [
     *         b + c
     *     ].forEach(print);
     *
     * But if one adds an element to the array and forgets to compensate for the
     * missing comma, no syntax error is thrown, and a linter cannot determine
     * if this was a mistake or an intentional function invocation.
     *
     *     [
     *         b + c
     *         (d + e)
     *     ].forEach(print);
     *
     * If one always appends a list item with a comma, this ambiguity cannot
     * occur:
     *
     *     [
     *         b + c,
     *     ].forEach(print);
     *
     *     [
     *         b + c,
     *         (d + e),
     *     ].forEach(print);
     */
    trailingcomma: false
  },
  relaxing: {

    /**
     * This option suppresses warnings about missing semicolons. There is a lot
     * of FUD about semicolon spread by quite a few people in the community.
     * The common myths are that semicolons are required all the time (they are
     * not) and that they are unreliable. JavaScript has rules about semicolons
     * which are followed by *all* browsers so it is up to you to decide
     * whether you should or should not use semicolons in your code.
     *
     * For more information about semicolons in JavaScript read [An Open Letter
     * to JavaScript Leaders Regarding
     * Semicolons](http://blog.izs.me/post/2353458699/an-open-letter-to-javascript-leaders-regarding)
     * by Isaac Schlueter and [JavaScript Semicolon
     * Insertion](http://inimino.org/~inimino/blog/javascript_semicolons).
     */
    asi         : true,

    /**
     * This option suppresses warnings about multi-line strings. Multi-line
     * strings can be dangerous in JavaScript because all hell breaks loose if
     * you accidentally put a whitespace in between the escape character (`\`)
     * and a new line.
     *
     * Note that even though this option allows correct multi-line strings, it
     * still warns about multi-line strings without escape characters or with
     * anything in between the escape character and a whitespace.
     *
     *     // jshint multistr:true
     *
     *     var text = "Hello\
     *     World"; // All good.
     *
     *     text = "Hello
     *     World"; // Warning, no escape character.
     *
     *     text = "Hello\
     *     World"; // Warning, there is a space after \
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    multistr    : true,

    /**
     * This option suppresses warnings about the `debugger` statements in your
     * code.
     */
    debug       : true,

    /**
     * This option suppresses warnings about the use of assignments in cases
     * where comparisons are expected. More often than not, code like `if (a =
     * 10) {}` is a typo. However, it can be useful in cases like this one:
     *
     *     for (var i = 0, person; person = people[i]; i++) {}
     *
     * You can silence this error on a per-use basis by surrounding the assignment
     * with parenthesis, such as:
     *
     *     for (var i = 0, person; (person = people[i]); i++) {}
     */
    boss        : true,

    /**
     * This option suppresses warnings about the use of `eval`. The use of
     * `eval` is discouraged because it can make your code vulnerable to
     * various injection attacks and it makes it hard for JavaScript
     * interpreter to do certain optimizations.
    */
    evil        : true,

    /**
     * This option suppresses warnings about declaring variables inside
     * of control structures while accessing them later from the outside.
     * Even though identifiers declared with `var` have two real scopes—global
     * and function—such practice leads to confusion among people new to
     * the language and hard-to-debug bugs. This is why, by default, JSHint
     * warns about variables that are used outside of their intended scope.
     *
     *     function test() {
     *       if (true) {
     *         var x = 0;
     *       }
     *
     *       x += 1; // Default: 'x' used out of scope.
     *                 // No warning when funcscope:true
     *     }
     */
    funcscope   : true,

    /**
     * This option suppresses warnings about the use of global strict mode.
     * Global strict mode can break third-party widgets so it is not
     * recommended.
     *
     * For more info about strict mode see the `strict` option.
     *
     * @deprecated Use `strict: "global"`.
     */
    globalstrict: true,

    /**
     * This option suppresses warnings about the `__iterator__` property. This
     * property is not supported by all browsers so use it carefully.
     */
    iterator    : true,

     /**
     * This option suppresses warnings about invalid `typeof` operator values.
     * This operator has only [a limited set of possible return
     * values](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof).
     * By default, JSHint warns when you compare its result with an invalid
     * value which often can be a typo.
     *
     *     // 'fuction' instead of 'function'
     *     if (typeof a == "fuction") { // Invalid typeof value 'fuction'
     *       // ...
     *     }
     *
     * Do not use this option unless you're absolutely sure you don't want
     * these checks.
     */
    notypeof    : true,

    /**
     * This option prohibits the use of unary increment and decrement
     * operators.  Some people think that `++` and `--` reduces the quality of
     * their coding styles and there are programming languages—such as
     * Python—that go completely without these operators.
     */
    plusplus    : true,

    /**
     * This option suppresses warnings about the `__proto__` property.
     */
    proto       : true,

    /**
     * This option suppresses warnings about the use of script-targeted
     * URLs—such as `javascript:...`.
     */
    scripturl   : true,

    /**
     * This option suppresses warnings about using `[]` notation when it can be
     * expressed in dot notation: `person['name']` vs. `person.name`.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    sub         : true,

    /**
     * This option suppresses warnings about "weird" constructions like
     * `new function () { ... }` and `new Object;`. Such constructions are
     * sometimes used to produce singletons in JavaScript:
     *
     *     var singleton = new function() {
     *       var privateVar;
     *
     *       this.publicMethod  = function () {}
     *       this.publicMethod2 = function () {}
     *     };
     */
    supernew    : true,

    /**
     * This option suppresses most of the warnings about possibly unsafe line
     * breakings in your code. It doesn't suppress warnings about comma-first
     * coding style. To suppress those you have to use `laxcomma` (see below).
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    laxbreak    : true,

    /**
     * This option suppresses warnings about comma-first coding style:
     *
     *     var obj = {
     *         name: 'Anton'
     *       , handle: 'valueof'
     *       , role: 'SW Engineer'
     *     };
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    laxcomma    : true,

    /**
     * This option suppresses warnings about possible strict violations when
     * the code is running in strict mode and you use `this` in a
     * non-constructor function. You should use this option—in a function scope
     * only—when you are positive that your use of `this` is valid in the
     * strict mode (for example, if you call your function using
     * `Function.call`).
     *
     * **Note:** This option can be used only inside of a function scope.
     * JSHint will fail with an error if you will try to set this option
     * globally.
     */
    validthis   : true,

    /**
     * This option suppresses warnings about the use of the `with` statement.
     * The semantics of the `with` statement can cause confusion among
     * developers and accidental definition of global variables.
     *
     * More info:
     *
     * * [with Statement Considered
     *   Harmful](http://yuiblog.com/blog/2006/04/11/with-statement-considered-harmful/)
     */
    withstmt    : true,

    /**
     * This options tells JSHint that your code uses Mozilla JavaScript
     * extensions. Unless you develop specifically for the Firefox web browser
     * you don't need this option.
     *
     * More info:
     *
     * * [New in JavaScript
     *   1.7](https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.7)
     */
    moz         : true,

    /**
     * This option suppresses warnings about generator functions with no
     * `yield` statement in them.
     */
    noyield     : true,

    /**
     * This option suppresses warnings about `== null` comparisons. Such
     * comparisons are often useful when you want to check if a variable is
     * `null` or `undefined`.
     */
    eqnull      : true,

    /**
     * This option suppresses warnings about missing semicolons, but only when
     * the semicolon is omitted for the last statement in a one-line block:
     *
     *     var name = (function() { return 'Anton' }());
     *
     * This is a very niche use case that is useful only when you use automatic
     * JavaScript code generators.
     */
    lastsemic   : true,

    /**
     * This option suppresses warnings about functions inside of loops.
     * Defining functions inside of loops can lead to bugs such as this one:
     *
     *     var nums = [];
     *
     *     for (var i = 0; i < 10; i++) {
     *       nums[i] = function (j) {
     *         return i + j;
     *       };
     *     }
     *
     *     nums[0](2); // Prints 12 instead of 2
     *
     * To fix the code above you need to copy the value of `i`:
     *
     *     var nums = [];
     *
     *     for (var i = 0; i < 10; i++) {
     *       (function (i) {
     *         nums[i] = function (j) {
     *             return i + j;
     *         };
     *       }(i));
     *     }
     */
    loopfunc    : true,

    /**
     * This option suppresses warnings about the use of expressions where
     * normally you would expect to see assignments or function calls. Most of
     * the time, such code is a typo. However, it is not forbidden by the spec
     * and that's why this warning is optional.
     */
    expr        : true,

    /**
     * This option tells JSHint that your code uses ECMAScript 6 specific
     * syntax. Note that not all browsers implement these features.
     *
     * More info:
     *
     * * [Specification for ECMAScript
     *   6](http://www.ecma-international.org/ecma-262/6.0/index.html)
     *
     * @deprecated Use `esversion: 6` instead.
     */
    esnext      : true,

    /**
     * This option tells JSHint that your code uses ES3 array elision elements,
     * or empty elements (for example, `[1, , , 4, , , 7]`).
     */
    elision     : true,
  },

  // Third party globals
  environments: {

    /**
     * This option defines globals exposed by the
     * [MooTools](http://mootools.net/) JavaScript framework.
     */
    mootools    : true,

    /**
     * This option defines globals exposed by
     * [CouchDB](http://couchdb.apache.org/). CouchDB is a document-oriented
     * database that can be queried and indexed in a MapReduce fashion using
     * JavaScript.
     */
    couch       : true,

    /**
     * This option defines globals exposed by [the Jasmine unit testing
     * framework](https://jasmine.github.io/).
     */
    jasmine     : true,

    /**
     * This option defines globals exposed by the [jQuery](http://jquery.com/)
     * JavaScript library.
     */
    jquery      : true,

    /**
     * This option defines globals available when your code is running inside
     * of the Node runtime environment. [Node.js](http://nodejs.org/) is a
     * server-side JavaScript environment that uses an asynchronous
     * event-driven model. This option also skips some warnings that make sense
     * in the browser environments but don't make sense in Node such as
     * file-level `use strict` pragmas and `console.log` statements.
     */
    node        : true,

    /**
     * This option defines globals exposed by [the QUnit unit testing
     * framework](http://qunitjs.com/).
     */
    qunit       : true,

    /**
     * This option defines globals available when your code is running inside
     * of the Rhino runtime environment. [Rhino](http://www.mozilla.org/rhino/)
     * is an open-source implementation of JavaScript written entirely in Java.
     */
    rhino       : true,

    /**
     * This option defines globals exposed by [the ShellJS
     * library](http://documentup.com/arturadib/shelljs).
     */
    shelljs     : true,

    /**
     * This option defines globals exposed by the
     * [Prototype](http://www.prototypejs.org/) JavaScript framework.
     */
    prototypejs : true,

    /**
     * This option defines globals exposed by the [YUI](http://yuilibrary.com/)
     * JavaScript framework.
     */
    yui         : true,

    /**
     * This option defines globals exposed by the "BDD" and "TDD" UIs of the
     * [Mocha unit testing framework](http://mochajs.org/).
     */
    mocha       : true,

    /**
     * This option informs JSHint that the input code describes an ECMAScript 6
     * module. All module code is interpreted as strict mode code.
     */
    module      : true,

    /**
     * This option defines globals available when your code is running as a
     * script for the [Windows Script
     * Host](http://en.wikipedia.org/wiki/Windows_Script_Host).
     */
    wsh         : true,

    /**
     * This option defines globals available when your code is running inside
     * of a Web Worker. [Web
     * Workers](https://developer.mozilla.org/en/Using_web_workers) provide a
     * simple means for web content to run scripts in background threads.
     */
    worker      : true,

    /**
     * This option defines non-standard but widely adopted globals such as
     * `escape` and `unescape`.
     */
    nonstandard : true,

    /**
     * This option defines globals exposed by modern browsers: all the way from
     * good old `document` and `navigator` to the HTML5 `FileReader` and other
     * new developments in the browser world.
     *
     * **Note:** This option doesn't expose variables like `alert` or
     * `console`. See option `devel` for more information.
     */
    browser     : true,

    /**
     * This option defines globals available when using [the Browserify
     * tool](http://browserify.org/) to build a project.
     */
    browserify  : true,

    /**
     * This option defines globals that are usually used for logging poor-man's
     * debugging: `console`, `alert`, etc. It is usually a good idea to not
     * ship them in production because, for example, `console.log` breaks in
     * legacy versions of Internet Explorer.
     */
    devel       : true,

    /**
     * This option defines globals exposed by the [Dojo
     * Toolkit](http://dojotoolkit.org/).
     */
    dojo        : true,

    /**
     * This option defines globals for typed array constructors.
     *
     * More info:
     *
     * * [JavaScript typed
     *   arrays](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays)
     */
    typed       : true,

    /**
     * This option defines globals available when your core is running inside
     * of the PhantomJS runtime environment. [PhantomJS](http://phantomjs.org/)
     * is a headless WebKit scriptable with a JavaScript API. It has fast and
     * native support for various web standards: DOM handling, CSS selector,
     * JSON, Canvas, and SVG.
     */
    phantom     : true
  },

  // Obsolete options
  obsolete: {
    onecase     : true, // if one case switch statements should be allowed
    regexp      : true, // if the . should not be allowed in regexp literals
    regexdash   : true  // if unescaped first/last dash (-) inside brackets
                        // should be tolerated
  }
};

// These are the JSHint options that can take any value
// (we use this object to detect invalid options)
exports.val = {

  /**
   * This option lets you set the maximum length of a line.
   *
   * @deprecated JSHint is limiting its scope to issues of code correctness. If
   *             you would like to enforce rules relating to code style, check
   *             out [the JSCS project](https://github.com/jscs-dev/node-jscs).
   */
  maxlen       : false,

  /**
   * This option sets a specific tab width for your code.
   *
   * @deprecated JSHint is limiting its scope to issues of code correctness. If
   *             you would like to enforce rules relating to code style, check
   *             out [the JSCS project](https://github.com/jscs-dev/node-jscs).
   */
  indent       : false,

  /**
   * This options allows you to set the maximum amount of warnings JSHint will
   * produce before giving up. Default is 50.
   */
  maxerr       : false,

  /**
   * This option allows you to control which variables JSHint considers to be
   * implicitly defined in the environment. Configure it with an array of
   * string values. Prefixing a variable name with a hyphen (-) character will
   * remove that name from the collection of predefined variables.
   *
   * JSHint will consider variables declared in this way to be read-only.
   *
   * This option cannot be specified in-line; it may only be used via the
   * JavaScript API or from an external configuration file.
   */
  predef       : false,

  /**
   * This option can be used to specify a white list of global variables that
   * are not formally defined in the source code. This is most useful when
   * combined with the `undef` option in order to suppress warnings for
   * project-specific global variables.
   *
   * Setting an entry to `true` enables reading and writing to that variable.
   * Setting it to `false` will trigger JSHint to consider that variable
   * read-only.
   *
   * See also the "environment" options: a set of options to be used as short
   * hand for enabling global variables defined in common JavaScript
   * environments.
   *
   * To configure `globals` within an individual file, see [Inline
   * Configuration](http://jshint.com/docs/#inline-configuration).
   */
  globals      : false,

  /**
   * This option enforces the consistency of quotation marks used throughout
   * your code. It accepts three values: `true` if you don't want to enforce
   * one particular style but want some consistency, `"single"` if you want to
   * allow only single quotes and `"double"` if you want to allow only double
   * quotes.
   *
   * @deprecated JSHint is limiting its scope to issues of code correctness. If
   *             you would like to enforce rules relating to code style, check
   *             out [the JSCS project](https://github.com/jscs-dev/node-jscs).
   */
  quotmark     : false,

  scope        : false,

  /**
   * This option lets you set the max number of statements allowed per function:
   *
   *     // jshint maxstatements:4
   *
   *     function main() {
   *       var i = 0;
   *       var j = 0;
   *
   *       // Function declarations count as one statement. Their bodies
   *       // don't get taken into account for the outer function.
   *       function inner() {
   *         var i2 = 1;
   *         var j2 = 1;
   *
   *         return i2 + j2;
   *       }
   *
   *       j = i + j;
   *       return j; // JSHint: Too many statements per function. (5)
   *     }
   */
  maxstatements: false,

  /**
   * This option lets you control how nested do you want your blocks to be:
   *
   *     // jshint maxdepth:2
   *
   *     function main(meaning) {
   *       var day = true;
   *
   *       if (meaning === 42) {
   *         while (day) {
   *           shuffle();
   *
   *           if (tired) { // JSHint: Blocks are nested too deeply (3).
   *               sleep();
   *           }
   *         }
   *       }
   *     }
   */
  maxdepth     : false,

  /**
   * This option lets you set the max number of formal parameters allowed per
   * function:
   *
   *     // jshint maxparams:3
   *
   *     function login(request, onSuccess) {
   *       // ...
   *     }
   *
   *     // JSHint: Too many parameters per function (4).
   *     function logout(request, isManual, whereAmI, onSuccess) {
   *       // ...
   *     }
   */
  maxparams    : false,

  /**
   * This option lets you control cyclomatic complexity throughout your code.
   * Cyclomatic complexity measures the number of linearly independent paths
   * through a program's source code. Read more about [cyclomatic complexity on
   * Wikipedia](http://en.wikipedia.org/wiki/Cyclomatic_complexity).
   */
  maxcomplexity: false,

  /**
   * This option suppresses warnings about variable shadowing i.e. declaring a
   * variable that had been already declared somewhere in the outer scope.
   *
   * - "inner"  - check for variables defined in the same scope only
   * - "outer"  - check for variables defined in outer scopes as well
   * - false    - same as inner
   * - true     - allow variable shadowing
   */
  shadow       : false,

  /**
   * This option requires the code to run in ECMAScript 5's strict mode.
   * [Strict mode](https://developer.mozilla.org/en/JavaScript/Strict_mode)
   * is a way to opt in to a restricted variant of JavaScript. Strict mode
   * eliminates some JavaScript pitfalls that didn't cause errors by changing
   * them to produce errors.  It also fixes mistakes that made it difficult
   * for the JavaScript engines to perform certain optimizations.
   *
   * - "global"  - there must be a `"use strict";` directive at global level
   * - "implied" - lint the code as if there is the `"use strict";` directive
   * - false     - disable warnings about strict mode
   * - true      - there must be a `"use strict";` directive at function level;
   *               this is preferable for scripts intended to be loaded in web
   *               browsers directly because enabling strict mode globally
   *               could adversely effect other scripts running on the same
   *               page
   */
  strict      : true,

  /**
   * This option warns when you define and never use your variables. It is very
   * useful for general code cleanup, especially when used in addition to
   * `undef`.
   *
   *     // jshint unused:true
   *
   *     function test(a, b) {
   *       var c, d = 2;
   *
   *       return a + d;
   *     }
   *
   *     test(1, 2);
   *
   *     // Line 3: 'b' was defined but never used.
   *     // Line 4: 'c' was defined but never used.
   *
   * In addition to that, this option will warn you about unused global
   * variables declared via the `global` directive.
   *
   * When set to `true`, unused parameters that are followed by a used
   * parameter will not produce warnings. This option can be set to `vars` to
   * only check for variables, not function parameters, or `strict` to check
   * all variables and parameters.
   */
  unused       : true,

  /**
   * This option prohibits the use of a variable before it was defined.
   * JavaScript has function scope only and, in addition to that, all variables
   * are always moved—or hoisted— to the top of the function. This behavior can
   * lead to some very nasty bugs and that's why it is safer to always use
   * variable only after they have been explicitly defined.
   *
   * Setting this option to "nofunc" will allow function declarations to be
   * ignored.
   *
   * For more in-depth understanding of scoping and hoisting in JavaScript,
   * read [JavaScript Scoping and
   * Hoisting](http://www.adequatelygood.com/2010/2/JavaScript-Scoping-and-Hoisting)
   * by Ben Cherry.
   */
  latedef      : false,

  ignore       : false, // start/end ignoring lines of code, bypassing the lexer
                        //   start    - start ignoring lines, including the current line
                        //   end      - stop ignoring lines, starting on the next line
                        //   line     - ignore warnings / errors for just a single line
                        //              (this option does not bypass the lexer)

  ignoreDelimiters: false, // array of start/end delimiters used to ignore
                           // certain chunks from code

  /**
   * This option is used to specify the ECMAScript version to which the code
   * must adhere. It can assume one of the following values:
   *  - `3` - If you need your program to be executable
   *    in older browsers—such as Internet Explorer 6/7/8/9—and other legacy
   *    JavaScript environments
   *  - `5` - To enable syntax first defined in [the ECMAScript 5.1
   *    specification](http://www.ecma-international.org/ecma-262/5.1/index.html).
   *    This includes allowing reserved keywords as object properties.
   *  - `6` - To tell JSHint that your code uses [ECMAScript
   *    6](http://www.ecma-international.org/ecma-262/6.0/index.html) specific
   *    syntax. Note that not all browsers implement them.
   *  - `7` - To enable language features introduced by [ECMAScript
   *    7](https://www.ecma-international.org/ecma-262/7.0/index.html). Notable
   *    additions: the exponentiation operator.
   *  - `8` - To enable language features introduced by [ECMAScript
   *    8](https://www.ecma-international.org/ecma-262/8.0/index.html). Notable
   *    additions: async functions, shared memory, and atomics
   *  - `9` - To enable language features introduced by [ECMAScript
   *    9](https://www.ecma-international.org/ecma-262/9.0/index.html). Notable
   *    additions: asynchronous iteration, rest/spread properties, and various
   *    RegExp extensions
   */
  esversion: 5
};

/**
 * Unstable options allow control for parsing and linting of proposed additions
 * to the JavaScript language. Just like the language features they describe,
 * the presence and behavior of these options is volatile; JSHint reserves the
 * right to remove or modify them between major version releases.
 */
exports.unstable = {
};

// These are JSHint boolean options which are shared with JSLint
// where the definition in JSHint is opposite JSLint
exports.inverted = {
  bitwise : true,
  forin   : true,
  newcap  : true,
  plusplus: true,
  regexp  : true,
  undef   : true,

  // Inverted and renamed, use JSHint name here
  eqeqeq  : true,
  strict  : true
};

exports.validNames = Object.keys(exports.val)
  .concat(Object.keys(exports.bool.relaxing))
  .concat(Object.keys(exports.bool.enforcing))
  .concat(Object.keys(exports.bool.obsolete))
  .concat(Object.keys(exports.bool.environments))
  .concat(["unstable"]);

exports.unstableNames = Object.keys(exports.unstable);

// These are JSHint boolean options which are shared with JSLint
// where the name has been changed but the effect is unchanged
exports.renamed = {
  eqeq   : "eqeqeq",
  windows: "wsh",
  sloppy : "strict"
};

exports.removed = {
  nomen: true,
  onevar: true,
  passfail: true,
  white: true,
  gcl: true,
  smarttabs: true,
  trailing: true
};

// Add options here which should not be automatically enforced by
// `enforceall`.
exports.noenforceall = {
  varstmt: true,
  strict: true,
  regexpu: true
};


/***/ }),
/* 447 */
/*!******************************************!*\
  !*** ./node_modules/jshint/src/style.js ***!
  \******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


exports.register = function(linter) {
  // Check for properties named __proto__. This special property was
  // deprecated and then re-introduced for ES6.

  linter.on("Identifier", function style_scanProto(data) {
    if (linter.getOption("proto")) {
      return;
    }

    if (data.name === "__proto__") {
      linter.warn("W103", {
        line: data.line,
        char: data.char,
        data: [ data.name, "6" ]
      });
    }
  });

  // Check for properties named __iterator__. This is a special property
  // available only in browsers with JavaScript 1.7 implementation, but
  // it is deprecated for ES6

  linter.on("Identifier", function style_scanIterator(data) {
    if (linter.getOption("iterator")) {
      return;
    }

    if (data.name === "__iterator__") {
      linter.warn("W103", {
        line: data.line,
        char: data.char,
        data: [ data.name ]
      });
    }
  });

  // Check that all identifiers are using camelCase notation.
  // Exceptions: names like MY_VAR and _myVar.

  linter.on("Identifier", function style_scanCamelCase(data) {
    if (!linter.getOption("camelcase")) {
      return;
    }

    if (data.name.replace(/^_+|_+$/g, "").indexOf("_") > -1 && !data.name.match(/^[A-Z0-9_]*$/)) {
      linter.warn("W106", {
        line: data.line,
        char: data.char,
        data: [ data.name ]
      });
    }
  });

  // Enforce consistency in style of quoting.

  linter.on("String", function style_scanQuotes(data) {
    var quotmark = linter.getOption("quotmark");
    var code;

    if (!quotmark) {
      return;
    }

    // If quotmark is set to 'single' warn about all double-quotes.

    if (quotmark === "single" && data.quote !== "'") {
      code = "W109";
    }

    // If quotmark is set to 'double' warn about all single-quotes.

    if (quotmark === "double" && data.quote !== "\"") {
      code = "W108";
    }

    // If quotmark is set to true, remember the first quotation style
    // and then warn about all others.

    if (quotmark === true) {
      if (!linter.getCache("quotmark")) {
        linter.setCache("quotmark", data.quote);
      }

      if (linter.getCache("quotmark") !== data.quote) {
        code = "W110";
      }
    }

    if (code) {
      linter.warn(code, {
        line: data.line,
        char: data.char,
      });
    }
  });

  linter.on("Number", function style_scanNumbers(data) {
    if (data.value.charAt(0) === ".") {
      // Warn about a leading decimal point.
      linter.warn("W008", {
        line: data.line,
        char: data.char,
        data: [ data.value ]
      });
    }

    if (data.value.substr(data.value.length - 1) === ".") {
      // Warn about a trailing decimal point.
      linter.warn("W047", {
        line: data.line,
        char: data.char,
        data: [ data.value ]
      });
    }

    if (/^00+/.test(data.value)) {
      // Multiple leading zeroes.
      linter.warn("W046", {
        line: data.line,
        char: data.char,
        data: [ data.value ]
      });
    }
  });

  // Warn about script URLs.

  linter.on("String", function style_scanJavaScriptURLs(data) {
    var re = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;

    if (linter.getOption("scripturl")) {
      return;
    }

    if (re.test(data.value)) {
      linter.warn("W107", {
        line: data.line,
        char: data.char
      });
    }
  });
};


/***/ }),
/* 448 */
/*!**********************************************************!*\
  !*** ./node_modules/jshint/data/es5-identifier-names.js ***!
  \**********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = 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/***/ }),
/* 449 */
/*!********************************************************************!*\
  !*** ./node_modules/jshint/data/non-ascii-identifier-part-only.js ***!
  \********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

var str = 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var arr = str.split(',').map(function(code) {
  return parseInt(code, 10);
});
module.exports = arr;

/***/ }),
/* 450 */
/*!****************************************************************!*\
  !*** ./node_modules/jshint/data/non-ascii-identifier-start.js ***!
  \****************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

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var arr = str.split(',').map(function(code) {
  return parseInt(code, 10);
});
module.exports = arr;

/***/ }),
/* 451 */
/*!***********************************************************!*\
  !*** ./node_modules/jshint/data/ascii-identifier-data.js ***!
  \***********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

var identifierStartTable = [];

for (var i = 0; i < 128; i++) {
  identifierStartTable[i] =
    i === 36 ||           // $
    i >= 65 && i <= 90 || // A-Z
    i === 95 ||           // _
    i >= 97 && i <= 122;  // a-z
}

var identifierPartTable = [];

for (var i = 0; i < 128; i++) {
  identifierPartTable[i] =
    identifierStartTable[i] || // $, _, A-Z, a-z
    i >= 48 && i <= 57;        // 0-9
}

module.exports = {
  asciiIdentifierStartTable: identifierStartTable,
  asciiIdentifierPartTable: identifierPartTable
};


/***/ }),
/* 452 */
/*!***********************************************!*\
  !*** ./node_modules/jshint/src/name-stack.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/**
 * The NameStack class is used to approximate function name inference as
 * introduced by ECMAScript 2015. In that edition, the `name` property of
 * function objects is set according to the function's syntactic form. For
 * certain forms, this value depends on values available to the runtime during
 * execution. For example:
 *
 *     var fnName = function() {};
 *
 * In the program code above, the function object's `name` property is set to
 * `"fnName"` during execution.
 *
 * This general "name inference" behavior extends to a number of additional
 * syntactic forms, not all of which can be implemented statically. `NameStack`
 * is a support class representing a "best-effort" attempt to implement the
 * specified behavior in cases where this may be done statically.
 *
 * For more information on this behavior, see the following blog post:
 * https://bocoup.com/blog/whats-in-a-function-name
 */


function NameStack() {
  this._stack = [];
}

Object.defineProperty(NameStack.prototype, "length", {
  get: function() {
    return this._stack.length;
  }
});

/**
 * Create a new entry in the stack. Useful for tracking names across
 * expressions.
 */
NameStack.prototype.push = function() {
  this._stack.push(null);
};

/**
 * Discard the most recently-created name on the stack.
 */
NameStack.prototype.pop = function() {
  this._stack.pop();
};

/**
 * Update the most recent name on the top of the stack.
 *
 * @param {object} token The token to consider as the source for the most
 *                       recent name.
 */
NameStack.prototype.set = function(token) {
  this._stack[this.length - 1] = token;
};

/**
 * Generate a string representation of the most recent name.
 *
 * @returns {string}
 */
NameStack.prototype.infer = function() {
  var nameToken = this._stack[this.length - 1];
  var prefix = "";
  var type;

  // During expected operation, the topmost entry on the stack will only
  // reflect the current function's name when the function is declared without
  // the `function` keyword (i.e. for in-line accessor methods). In other
  // cases, the `function` expression itself will introduce an empty entry on
  // the top of the stack, and this should be ignored.
  if (!nameToken || nameToken.type === "class") {
    nameToken = this._stack[this.length - 2];
  }

  if (!nameToken) {
    return "(empty)";
  }

  type = nameToken.type;

  if (type !== "(string)" && type !== "(number)" && type !== "(identifier)" && type !== "default") {
    return "(expression)";
  }

  if (nameToken.accessorType) {
    prefix = nameToken.accessorType + " ";
  }

  return prefix + nameToken.value;
};

module.exports = NameStack;


/***/ }),
/* 453 */
/*!****************************************!*\
  !*** ./node_modules/jshint/src/lex.js ***!
  \****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/*
 * Lexical analysis and token construction.
 */



var _      = __webpack_require__(/*! lodash */ 158);
var events = __webpack_require__(/*! events */ 133);
var reg    = __webpack_require__(/*! ./reg.js */ 239);
var state  = __webpack_require__(/*! ./state.js */ 238).state;

var unicodeData = __webpack_require__(/*! ../data/ascii-identifier-data.js */ 451);
var asciiIdentifierStartTable = unicodeData.asciiIdentifierStartTable;
var asciiIdentifierPartTable = unicodeData.asciiIdentifierPartTable;
var nonAsciiIdentifierStartTable = __webpack_require__(/*! ../data/non-ascii-identifier-start.js */ 450);
var nonAsciiIdentifierPartTable = __webpack_require__(/*! ../data/non-ascii-identifier-part-only.js */ 449);
// Loading of this module is deferred as an optimization for ES2015 input
var es5IdentifierNames;

// Some of these token types are from JavaScript Parser API
// while others are specific to JSHint parser.
// JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API

var Token = {
  Identifier: 1,
  Punctuator: 2,
  NumericLiteral: 3,
  StringLiteral: 4,
  Comment: 5,
  Keyword: 6,
  RegExp: 9,
  TemplateHead: 10,
  TemplateMiddle: 11,
  TemplateTail: 12,
  NoSubstTemplate: 13
};

var Context = {
  Block: 1,
  Template: 2
};

function isHex(str) {
  return /^[0-9a-fA-F]+$/.test(str);
}

function isHexDigit(str) {
  return str.length === 1 && isHex(str);
}

// Object that handles postponed lexing verifications that checks the parsed
// environment state.

function asyncTrigger() {
  var _checks = [];

  return {
    push: function(fn) {
      _checks.push(fn);
    },

    check: function() {
      for (var check = 0; check < _checks.length; ++check) {
        _checks[check]();
      }

      _checks.splice(0, _checks.length);
    }
  };
}

/*
 * Lexer for JSHint.
 *
 * This object does a char-by-char scan of the provided source code
 * and produces a sequence of tokens.
 *
 *   var lex = new Lexer("var i = 0;");
 *   lex.start();
 *   lex.token(); // returns the next token
 *
 * You have to use the token() method to move the lexer forward
 * but you don't have to use its return value to get tokens. In addition
 * to token() method returning the next token, the Lexer object also
 * emits events.
 *
 *   lex.on("Identifier", function(data) {
 *     if (data.name.indexOf("_") >= 0) {
 *       // Produce a warning.
 *     }
 *   });
 *
 * Note that the token() method returns tokens in a JSLint-compatible
 * format while the event emitter uses a slightly modified version of
 * Mozilla's JavaScript Parser API. Eventually, we will move away from
 * JSLint format.
 */
function Lexer(source) {
  var lines = source;

  if (typeof lines === "string") {
    lines = lines
      .replace(/\r\n/g, "\n")
      .replace(/\r/g, "\n")
      .split("\n");
  }

  // If the first line is a shebang (#!), make it a blank and move on.
  // Shebangs are used by Node scripts.

  if (lines[0] && lines[0].substr(0, 2) === "#!") {
    if (lines[0].indexOf("node") !== -1) {
      state.option.node = true;
    }
    lines[0] = "";
  }

  this.emitter = new events.EventEmitter();
  this.source = source;
  this.setLines(lines);
  this.prereg = true;

  this.line = 0;
  this.char = 1;
  this.from = 1;
  this.input = "";
  this.inComment = false;
  this.context = [];
  this.templateStarts = [];

  for (var i = 0; i < state.option.indent; i += 1) {
    state.tab += " ";
  }
}

Lexer.prototype = {
  _lines: [],

  inContext: function(ctxType) {
    return this.context.length > 0 && this.context[this.context.length - 1].type === ctxType;
  },

  pushContext: function(ctxType) {
    this.context.push({ type: ctxType });
  },

  popContext: function() {
    return this.context.pop();
  },

  currentContext: function() {
    return this.context.length > 0 && this.context[this.context.length - 1];
  },

  getLines: function() {
    this._lines = state.lines;
    return this._lines;
  },

  setLines: function(val) {
    this._lines = val;
    state.lines = this._lines;
  },

  /*
   * Return the next i character without actually moving the
   * char pointer.
   */
  peek: function(i) {
    return this.input.charAt(i || 0);
  },

  /*
   * Move the char pointer forward i times.
   */
  skip: function(i) {
    i = i || 1;
    this.char += i;
    this.input = this.input.slice(i);
  },

  /*
   * Subscribe to a token event. The API for this method is similar
   * Underscore.js i.e. you can subscribe to multiple events with
   * one call:
   *
   *   lex.on("Identifier Number", function(data) {
   *     // ...
   *   });
   */
  on: function(names, listener) {
    names.split(" ").forEach(function(name) {
      this.emitter.on(name, listener);
    }.bind(this));
  },

  /*
   * Trigger a token event. All arguments will be passed to each
   * listener.
   */
  trigger: function() {
    this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments));
  },

  /*
   * Postpone a token event. the checking condition is set as
   * last parameter, and the trigger function is called in a
   * stored callback. To be later called using the check() function
   * by the parser. This avoids parser's peek() to give the lexer
   * a false context.
   */
  triggerAsync: function(type, args, checks, fn) {
    checks.push(function() {
      if (fn()) {
        this.trigger(type, args);
      }
    }.bind(this));
  },

  /*
   * Extract a punctuator out of the next sequence of characters
   * or return 'null' if its not possible.
   *
   * This method's implementation was heavily influenced by the
   * scanPunctuator function in the Esprima parser's source code.
   */
  scanPunctuator: function() {
    var ch1 = this.peek();
    var ch2, ch3, ch4;

    switch (ch1) {
    // Most common single-character punctuators
    case ".":
      if ((/^[0-9]$/).test(this.peek(1))) {
        return null;
      }
      if (this.peek(1) === "." && this.peek(2) === ".") {
        return {
          type: Token.Punctuator,
          value: "..."
        };
      }
      /* falls through */
    case "(":
    case ")":
    case ";":
    case ",":
    case "[":
    case "]":
    case ":":
    case "~":
    case "?":
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // A block/object opener
    case "{":
      this.pushContext(Context.Block);
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // A block/object closer
    case "}":
      if (this.inContext(Context.Block)) {
        this.popContext();
      }
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // A pound sign (for Node shebangs)
    case "#":
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // We're at the end of input
    case "":
      return null;
    }

    // Peek more characters

    ch2 = this.peek(1);
    ch3 = this.peek(2);
    ch4 = this.peek(3);

    // 4-character punctuator: >>>=

    if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") {
      return {
        type: Token.Punctuator,
        value: ">>>="
      };
    }

    // 3-character punctuators: === !== >>> <<= >>=

    if (ch1 === "=" && ch2 === "=" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: "==="
      };
    }

    if (ch1 === "!" && ch2 === "=" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: "!=="
      };
    }

    if (ch1 === ">" && ch2 === ">" && ch3 === ">") {
      return {
        type: Token.Punctuator,
        value: ">>>"
      };
    }

    if (ch1 === "<" && ch2 === "<" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: "<<="
      };
    }

    if (ch1 === ">" && ch2 === ">" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: ">>="
      };
    }

    // Fat arrow punctuator
    if (ch1 === "=" && ch2 === ">") {
      return {
        type: Token.Punctuator,
        value: ch1 + ch2
      };
    }

    // 2-character punctuators: ++ -- << >> && || **
    if (ch1 === ch2 && ("+-<>&|*".indexOf(ch1) >= 0)) {
      if (ch1 === "*" && ch3 === "=") {
        return {
          type: Token.Punctuator,
          value: ch1 + ch2 + ch3
        };
      }

      return {
        type: Token.Punctuator,
        value: ch1 + ch2
      };
    }

    // <= >= != += -= *= %= &= |= ^= /=
    if ("<>=!+-*%&|^/".indexOf(ch1) >= 0) {
      if (ch2 === "=") {
        return {
          type: Token.Punctuator,
          value: ch1 + ch2
        };
      }

      return {
        type: Token.Punctuator,
        value: ch1
      };
    }

    return null;
  },

  /*
   * Extract a comment out of the next sequence of characters and/or
   * lines or return 'null' if its not possible. Since comments can
   * span across multiple lines this method has to move the char
   * pointer.
   *
   * In addition to normal JavaScript comments (// and /*) this method
   * also recognizes JSHint- and JSLint-specific comments such as
   * /*jshint, /*jslint, /*globals and so on.
   */
  scanComments: function(checks) {
    var ch1 = this.peek();
    var ch2 = this.peek(1);
    var rest = this.input.substr(2);
    var startLine = this.line;
    var startChar = this.char;
    var self = this;

    // Create a comment token object and make sure it
    // has all the data JSHint needs to work with special
    // comments.

    function commentToken(label, body, opt) {
      var special = [
        "jshint", "jshint.unstable", "jslint", "members", "member", "globals",
        "global", "exported"
      ];
      var isSpecial = false;
      var value = label + body;
      var commentType = "plain";
      opt = opt || {};

      if (opt.isMultiline) {
        value += "*/";
      }

      body = body.replace(/\n/g, " ");

      if (label === "/*" && reg.fallsThrough.test(body)) {
        isSpecial = true;
        commentType = "falls through";
      }

      special.forEach(function(str) {
        if (isSpecial) {
          return;
        }

        // Don't recognize any special comments other than jshint for single-line
        // comments. This introduced many problems with legit comments.
        if (label === "//" && str !== "jshint" && str !== "jshint.unstable") {
          return;
        }

        if (body.charAt(str.length) === " " && body.substr(0, str.length) === str) {
          isSpecial = true;
          label = label + str;
          body = body.substr(str.length);
        }

        if (!isSpecial && body.charAt(0) === " " && body.charAt(str.length + 1) === " " &&
          body.substr(1, str.length) === str) {
          isSpecial = true;
          label = label + " " + str;
          body = body.substr(str.length + 1);
        }

        // To handle rarer case when special word is separated from label by
        // multiple spaces or tabs
        var strIndex = body.indexOf(str);
        if (!isSpecial && strIndex >= 0 && body.charAt(strIndex + str.length) === " ") {
          var isAllWhitespace = body.substr(0, strIndex).trim().length === 0;
          if (isAllWhitespace) {
            isSpecial = true;
            body = body.substr(str.length + strIndex);
          }
        }

        if (!isSpecial) {
          return;
        }

        switch (str) {
        case "member":
          commentType = "members";
          break;
        case "global":
          commentType = "globals";
          break;
        default:
          var options = body.split(":").map(function(v) {
            return v.replace(/^\s+/, "").replace(/\s+$/, "");
          });

          if (options.length === 2) {
            switch (options[0]) {
            case "ignore":
              switch (options[1]) {
              case "start":
                self.ignoringLinterErrors = true;
                isSpecial = false;
                break;
              case "end":
                self.ignoringLinterErrors = false;
                isSpecial = false;
                break;
              }
            }
          }

          commentType = str;
        }
      });

      return {
        type: Token.Comment,
        commentType: commentType,
        value: value,
        body: body,
        isSpecial: isSpecial,
        isMalformed: opt.isMalformed || false
      };
    }

    // End of unbegun comment. Raise an error and skip that input.
    if (ch1 === "*" && ch2 === "/") {
      this.trigger("error", {
        code: "E018",
        line: startLine,
        character: startChar
      });

      this.skip(2);
      return null;
    }

    // Comments must start either with // or /*
    if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) {
      return null;
    }

    // One-line comment
    if (ch2 === "/") {
      this.skip(this.input.length); // Skip to the EOL.
      return commentToken("//", rest);
    }

    var body = "";

    /* Multi-line comment */
    if (ch2 === "*") {
      this.inComment = true;
      this.skip(2);

      while (this.peek() !== "*" || this.peek(1) !== "/") {
        if (this.peek() === "") { // End of Line
          body += "\n";

          // If we hit EOF and our comment is still unclosed,
          // trigger an error and end the comment implicitly.
          if (!this.nextLine(checks)) {
            this.trigger("error", {
              code: "E017",
              line: startLine,
              character: startChar
            });

            this.inComment = false;
            return commentToken("/*", body, {
              isMultiline: true,
              isMalformed: true
            });
          }
        } else {
          body += this.peek();
          this.skip();
        }
      }

      this.skip(2);
      this.inComment = false;
      return commentToken("/*", body, { isMultiline: true });
    }
  },

  /*
   * Extract a keyword out of the next sequence of characters or
   * return 'null' if its not possible.
   */
  scanKeyword: function() {
    var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input);
    var keywords = [
      "if", "in", "do", "var", "for", "new",
      "try", "let", "this", "else", "case",
      "void", "with", "enum", "while", "break",
      "catch", "throw", "const", "yield", "class",
      "super", "return", "typeof", "delete",
      "switch", "export", "import", "default",
      "finally", "extends", "function", "continue",
      "debugger", "instanceof", "true", "false", "null", "async", "await"
    ];

    if (result && keywords.indexOf(result[0]) >= 0) {
      return {
        type: Token.Keyword,
        value: result[0]
      };
    }

    return null;
  },

  /*
   * Extract a JavaScript identifier out of the next sequence of
   * characters or return 'null' if its not possible.
   */
  scanIdentifier: function(checks) {
    var id = "";
    var index = 0;
    var char, value;

    function isNonAsciiIdentifierStart(code) {
      return nonAsciiIdentifierStartTable.indexOf(code) > -1;
    }

    function isNonAsciiIdentifierPart(code) {
      return isNonAsciiIdentifierStart(code) || nonAsciiIdentifierPartTable.indexOf(code) > -1;
    }

    var readUnicodeEscapeSequence = function() {
      /*jshint validthis:true */
      index += 1;

      if (this.peek(index) !== "u") {
        return null;
      }

      var sequence = this.peek(index + 1) + this.peek(index + 2) +
        this.peek(index + 3) + this.peek(index + 4);
      var code;

      if (isHex(sequence)) {
        code = parseInt(sequence, 16);

        if (asciiIdentifierPartTable[code] || isNonAsciiIdentifierPart(code)) {
          index += 5;
          return "\\u" + sequence;
        }

        return null;
      }

      return null;
    }.bind(this);

    var getIdentifierStart = function() {
      /*jshint validthis:true */
      var chr = this.peek(index);
      var code = chr.charCodeAt(0);

      if (code === 92) {
        return readUnicodeEscapeSequence();
      }

      if (code < 128) {
        if (asciiIdentifierStartTable[code]) {
          index += 1;
          return chr;
        }

        return null;
      }

      if (isNonAsciiIdentifierStart(code)) {
        index += 1;
        return chr;
      }

      return null;
    }.bind(this);

    var getIdentifierPart = function() {
      /*jshint validthis:true */
      var chr = this.peek(index);
      var code = chr.charCodeAt(0);

      if (code === 92) {
        return readUnicodeEscapeSequence();
      }

      if (code < 128) {
        if (asciiIdentifierPartTable[code]) {
          index += 1;
          return chr;
        }

        return null;
      }

      if (isNonAsciiIdentifierPart(code)) {
        index += 1;
        return chr;
      }

      return null;
    }.bind(this);

    function removeEscapeSequences(id) {
      return id.replace(/\\u([0-9a-fA-F]{4})/g, function(m0, codepoint) {
        return String.fromCharCode(parseInt(codepoint, 16));
      });
    }

    char = getIdentifierStart();
    if (char === null) {
      return null;
    }

    id = char;
    for (;;) {
      char = getIdentifierPart();

      if (char === null) {
        break;
      }

      id += char;
    }

    value = removeEscapeSequences(id);

    if (!state.inES6(true)) {
      es5IdentifierNames = __webpack_require__(/*! ../data/es5-identifier-names.js */ 448);

      if (!es5IdentifierNames.test(value)) {
        this.triggerAsync(
          "warning",
          {
            code: "W119",
            line: this.line,
            character: this.char,
            data: ["unicode 8", "6"]
          },
          checks,
          function() { return true; }
        );
      }
    }

    return {
      type: Token.Identifier,
      value: value,
      text: id,
      tokenLength: id.length
    };
  },

  /*
   * Extract a numeric literal out of the next sequence of
   * characters or return 'null' if its not possible. This method
   * supports all numeric literals described in section 7.8.3
   * of the EcmaScript 5 specification.
   *
   * This method's implementation was heavily influenced by the
   * scanNumericLiteral function in the Esprima parser's source code.
   */
  scanNumericLiteral: function(checks) {
    var index = 0;
    var value = "";
    var length = this.input.length;
    var char = this.peek(index);
    var isAllowedDigit = isDecimalDigit;
    var base = 10;
    var isLegacy = false;

    function isDecimalDigit(str) {
      return (/^[0-9]$/).test(str);
    }

    function isOctalDigit(str) {
      return (/^[0-7]$/).test(str);
    }

    function isBinaryDigit(str) {
      return (/^[01]$/).test(str);
    }

    function isIdentifierStart(ch) {
      return (ch === "$") || (ch === "_") || (ch === "\\") ||
        (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z");
    }

    // Numbers must start either with a decimal digit or a point.

    if (char !== "." && !isDecimalDigit(char)) {
      return null;
    }

    if (char !== ".") {
      value = this.peek(index);
      index += 1;
      char = this.peek(index);

      if (value === "0") {
        // Base-16 numbers.
        if (char === "x" || char === "X") {
          isAllowedDigit = isHexDigit;
          base = 16;

          index += 1;
          value += char;
        }

        // Base-8 numbers.
        if (char === "o" || char === "O") {
          isAllowedDigit = isOctalDigit;
          base = 8;

          if (!state.inES6(true)) {
            this.triggerAsync(
              "warning",
              {
                code: "W119",
                line: this.line,
                character: this.char,
                data: [ "Octal integer literal", "6" ]
              },
              checks,
              function() { return true; }
            );
          }

          index += 1;
          value += char;
        }

        // Base-2 numbers.
        if (char === "b" || char === "B") {
          isAllowedDigit = isBinaryDigit;
          base = 2;

          if (!state.inES6(true)) {
            this.triggerAsync(
              "warning",
              {
                code: "W119",
                line: this.line,
                character: this.char,
                data: [ "Binary integer literal", "6" ]
              },
              checks,
              function() { return true; }
            );
          }

          index += 1;
          value += char;
        }

        // Legacy base-8 numbers.
        if (isOctalDigit(char)) {
          isAllowedDigit = isOctalDigit;
          base = 8;
          isLegacy = true;

          index += 1;
          value += char;
        }

        // Decimal numbers that start with '0' such as '09' are illegal
        // but we still parse them and return as malformed.

        if (!isOctalDigit(char) && isDecimalDigit(char)) {
          index += 1;
          value += char;
        }
      }

      while (index < length) {
        char = this.peek(index);

        // Numbers like '019' (note the 9) are not valid octals
        // but we still parse them and mark as malformed.
        if (!(isLegacy && isDecimalDigit(char)) && !isAllowedDigit(char)) {
          break;
        }
        value += char;
        index += 1;
      }

      if (isAllowedDigit !== isDecimalDigit) {
        if (!isLegacy && value.length <= 2) { // 0x
          return {
            type: Token.NumericLiteral,
            value: value,
            isMalformed: true
          };
        }

        if (index < length) {
          char = this.peek(index);
          if (isIdentifierStart(char)) {
            return null;
          }
        }

        return {
          type: Token.NumericLiteral,
          value: value,
          base: base,
          isLegacy: isLegacy,
          isMalformed: false
        };
      }
    }

    // Decimal digits.

    if (char === ".") {
      value += char;
      index += 1;

      while (index < length) {
        char = this.peek(index);
        if (!isDecimalDigit(char)) {
          break;
        }
        value += char;
        index += 1;
      }
    }

    // Exponent part.

    if (char === "e" || char === "E") {
      value += char;
      index += 1;
      char = this.peek(index);

      if (char === "+" || char === "-") {
        value += this.peek(index);
        index += 1;
      }

      char = this.peek(index);
      if (isDecimalDigit(char)) {
        value += char;
        index += 1;

        while (index < length) {
          char = this.peek(index);
          if (!isDecimalDigit(char)) {
            break;
          }
          value += char;
          index += 1;
        }
      } else {
        return null;
      }
    }

    if (index < length) {
      char = this.peek(index);
      if (isIdentifierStart(char)) {
        return null;
      }
    }

    return {
      type: Token.NumericLiteral,
      value: value,
      base: base,
      isMalformed: !isFinite(value)
    };
  },


  // Assumes previously parsed character was \ (=== '\\') and was not skipped.
  scanEscapeSequence: function(checks) {
    var allowNewLine = false;
    var jump = 1;
    this.skip();
    var char = this.peek();

    switch (char) {
    case "'":
      this.triggerAsync("warning", {
        code: "W114",
        line: this.line,
        character: this.char,
        data: [ "\\'" ]
      }, checks, function() {return state.jsonMode; });
      break;
    case "b":
      char = "\\b";
      break;
    case "f":
      char = "\\f";
      break;
    case "n":
      char = "\\n";
      break;
    case "r":
      char = "\\r";
      break;
    case "t":
      char = "\\t";
      break;
    case "0":
      char = "\\0";

      // Octal literals fail in strict mode.
      // Check if the number is between 00 and 07.
      var n = parseInt(this.peek(1), 10);
      this.triggerAsync("warning", {
        code: "W115",
        line: this.line,
        character: this.char
      }, checks,
      function() { return n >= 0 && n <= 7 && state.isStrict(); });
      break;
    case "1":
    case "2":
    case "3":
    case "4":
    case "5":
    case "6":
    case "7":
      char = "\\" + char;
      this.triggerAsync("warning", {
        code: "W115",
        line: this.line,
        character: this.char
      }, checks,
      function() { return state.isStrict(); });
      break;
    case "u":
      var sequence = this.input.substr(1, 4);
      var code = parseInt(sequence, 16);
      if (!isHex(sequence)) {
        // This condition unequivocally describes a syntax error.
        // TODO: Re-factor as an "error" (not a "warning").
        this.trigger("warning", {
          code: "W052",
          line: this.line,
          character: this.char,
          data: [ "u" + sequence ]
        });
      }
      char = String.fromCharCode(code);
      jump = 5;
      break;
    case "v":
      this.triggerAsync("warning", {
        code: "W114",
        line: this.line,
        character: this.char,
        data: [ "\\v" ]
      }, checks, function() { return state.jsonMode; });

      char = "\v";
      break;
    case "x":
      var  x = parseInt(this.input.substr(1, 2), 16);

      this.triggerAsync("warning", {
        code: "W114",
        line: this.line,
        character: this.char,
        data: [ "\\x-" ]
      }, checks, function() { return state.jsonMode; });

      char = String.fromCharCode(x);
      jump = 3;
      break;
    case "\\":
      char = "\\\\";
      break;
    case "\"":
      char = "\\\"";
      break;
    case "/":
      break;
    case "":
      allowNewLine = true;
      char = "";
      break;
    }

    return { char: char, jump: jump, allowNewLine: allowNewLine };
  },

  /*
   * Extract a template literal out of the next sequence of characters
   * and/or lines or return 'null' if its not possible. Since template
   * literals can span across multiple lines, this method has to move
   * the char pointer.
   */
  scanTemplateLiteral: function(checks) {
    var tokenType;
    var value = "";
    var ch;
    var startLine = this.line;
    var startChar = this.char;
    var depth = this.templateStarts.length;

    if (this.peek() === "`") {
      if (!state.inES6(true)) {
        this.triggerAsync(
          "warning",
          {
            code: "W119",
            line: this.line,
            character: this.char,
            data: ["template literal syntax", "6"]
          },
          checks,
          function() { return true; }
        );
      }
      // Template must start with a backtick.
      tokenType = Token.TemplateHead;
      this.templateStarts.push({ line: this.line, char: this.char });
      depth = this.templateStarts.length;
      this.skip(1);
      this.pushContext(Context.Template);
    } else if (this.inContext(Context.Template) && this.peek() === "}") {
      // If we're in a template context, and we have a '}', lex a TemplateMiddle.
      tokenType = Token.TemplateMiddle;
    } else {
      // Go lex something else.
      return null;
    }

    while (this.peek() !== "`") {
      while ((ch = this.peek()) === "") {
        value += "\n";
        if (!this.nextLine(checks)) {
          // Unclosed template literal --- point to the starting "`"
          var startPos = this.templateStarts.pop();
          this.trigger("error", {
            code: "E052",
            line: startPos.line,
            character: startPos.char
          });
          return {
            type: tokenType,
            value: value,
            startLine: startLine,
            startChar: startChar,
            isUnclosed: true,
            depth: depth,
            context: this.popContext()
          };
        }
      }

      if (ch === '$' && this.peek(1) === '{') {
        value += '${';
        this.skip(2);
        return {
          type: tokenType,
          value: value,
          startLine: startLine,
          startChar: startChar,
          isUnclosed: false,
          depth: depth,
          context: this.currentContext()
        };
      } else if (ch === '\\') {
        var escape = this.scanEscapeSequence(checks);
        value += escape.char;
        this.skip(escape.jump);
      } else if (ch !== '`') {
        // Otherwise, append the value and continue.
        value += ch;
        this.skip(1);
      }
    }

    // Final value is either NoSubstTemplate or TemplateTail
    tokenType = tokenType === Token.TemplateHead ? Token.NoSubstTemplate : Token.TemplateTail;
    this.skip(1);
    this.templateStarts.pop();

    return {
      type: tokenType,
      value: value,
      startLine: startLine,
      startChar: startChar,
      isUnclosed: false,
      depth: depth,
      context: this.popContext()
    };
  },

  /*
   * Extract a string out of the next sequence of characters and/or
   * lines or return 'null' if its not possible. Since strings can
   * span across multiple lines this method has to move the char
   * pointer.
   *
   * This method recognizes pseudo-multiline JavaScript strings:
   *
   *   var str = "hello\
   *   world";
   */
  scanStringLiteral: function(checks) {
    /*jshint loopfunc:true */
    var quote = this.peek();

    // String must start with a quote.
    if (quote !== "\"" && quote !== "'") {
      return null;
    }

    // In JSON strings must always use double quotes.
    this.triggerAsync("warning", {
      code: "W108",
      line: this.line,
      character: this.char // +1?
    }, checks, function() { return state.jsonMode && quote !== "\""; });

    var value = "";
    var startLine = this.line;
    var startChar = this.char;
    var allowNewLine = false;

    this.skip();

    while (this.peek() !== quote) {
      if (this.peek() === "") { // End Of Line

        // If an EOL is not preceded by a backslash, show a warning
        // and proceed like it was a legit multi-line string where
        // author simply forgot to escape the newline symbol.
        //
        // Another approach is to implicitly close a string on EOL
        // but it generates too many false positives.

        if (!allowNewLine) {
          // This condition unequivocally describes a syntax error.
          // TODO: Emit error E029 and remove W112.
          this.trigger("warning", {
            code: "W112",
            line: this.line,
            character: this.char
          });
        } else {
          allowNewLine = false;

          // Otherwise show a warning if multistr option was not set.
          // For JSON, show warning no matter what.

          this.triggerAsync("warning", {
            code: "W043",
            line: this.line,
            character: this.char
          }, checks, function() { return !state.option.multistr; });

          this.triggerAsync("warning", {
            code: "W042",
            line: this.line,
            character: this.char
          }, checks, function() { return state.jsonMode && state.option.multistr; });
        }

        // If we get an EOF inside of an unclosed string, show an
        // error and implicitly close it at the EOF point.

        if (!this.nextLine(checks)) {
          return {
            type: Token.StringLiteral,
            value: value,
            startLine: startLine,
            startChar: startChar,
            isUnclosed: true,
            quote: quote
          };
        }

      } else { // Any character other than End Of Line

        allowNewLine = false;
        var char = this.peek();
        var jump = 1; // A length of a jump, after we're done
                      // parsing this character.

        if (char < " ") {
          // Warn about a control character in a string.
          this.triggerAsync(
            "warning",
            {
              code: "W113",
              line: this.line,
              character: this.char,
              data: [ "<non-printable>" ]
            },
            checks,
            function() { return true; }
          );
        }

        // Special treatment for some escaped characters.
        if (char === "\\") {
          var parsed = this.scanEscapeSequence(checks);
          char = parsed.char;
          jump = parsed.jump;
          allowNewLine = parsed.allowNewLine;
        }

        // If char is the empty string, end of the line has been reached. In
        // this case, `this.char` should not be incremented so that warnings
        // and errors reported in the subsequent loop iteration have the
        // correct character column offset.
        if (char !== "") {
          value += char;
          this.skip(jump);
        }
      }
    }

    this.skip();
    return {
      type: Token.StringLiteral,
      value: value,
      startLine: startLine,
      startChar: startChar,
      isUnclosed: false,
      quote: quote
    };
  },

  /*
   * Extract a regular expression out of the next sequence of
   * characters and/or lines or return 'null' if its not possible.
   *
   * This method is platform dependent: it accepts almost any
   * regular expression values but then tries to compile and run
   * them using system's RegExp object. This means that there are
   * rare edge cases where one JavaScript engine complains about
   * your regular expression while others don't.
   */
  scanRegExp: function(checks) {
    var index = 0;
    var length = this.input.length;
    var char = this.peek();
    var value = char;
    var body = "";
    var groupReferences = [];
    var allFlags = "";
    var es5Flags = "";
    var malformed = false;
    var isCharSet = false;
    var isCharSetRange = false;
    var isGroup = false;
    var isQuantifiable = false;
    var hasInvalidQuantifier = false;
    var escapedChars = "";
    var hasUFlag = function() { return allFlags.indexOf("u") > -1; };
    var escapeSequence;
    var groupCount = 0;
    var terminated, malformedDesc;

    var scanRegexpEscapeSequence = function() {
      var next, sequence;
      index += 1;
      char = this.peek(index);

      if (reg.nonzeroDigit.test(char)) {
        sequence = char;
        next = this.peek(index + 1);
        while (reg.nonzeroDigit.test(next) || next === "0") {
          index += 1;
          char = next;
          sequence += char;
          body += char;
          value += char;
          next = this.peek(index + 1);
        }
        groupReferences.push(Number(sequence));
        return sequence;
      }

      escapedChars += char;

      if (char === "u" && this.peek(index + 1) === "{") {
        var x = index + 2;
        sequence = "u{";
        next = this.peek(x);
        while (isHex(next)) {
          sequence += next;
          x += 1;
          next = this.peek(x);
        }

        if (next !== "}") {
          this.triggerAsync(
            "error",
            {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ "Invalid Unicode escape sequence" ]
            },
            checks,
            hasUFlag
          );
        } else if (sequence.length > 2) {
          sequence += "}";
          body += sequence;
          value += sequence;
          index = x + 1;
          return sequence;
        }
      }

      // Unexpected control character
      if (char < " ") {
        malformed = true;
        this.triggerAsync(
          "warning",
          {
            code: "W048",
            line: this.line,
            character: this.char
          },
          checks,
          function() { return true; }
        );
      }

      // Unexpected escaped character
      if (char === "<") {
        malformed = true;
        this.triggerAsync(
          "warning",
          {
            code: "W049",
            line: this.line,
            character: this.char,
            data: [ char ]
          },
          checks,
          function() { return true; }
        );
      }

      index += 1;
      body += char;
      value += char;

      return char;
    }.bind(this);

    var checkQuantifier = function() {
      var lookahead = index;
      var lowerBound = "";
      var upperBound = "";
      var next;

      next = this.peek(lookahead + 1);

      while (reg.decimalDigit.test(next)) {
        lookahead += 1;
        lowerBound += next;
        next = this.peek(lookahead + 1);
      }

      if (!lowerBound) {
        return false;
      }

      if (next === "}") {
        return true;
      }

      if (next !== ",") {
        return false;
      }

      lookahead += 1;
      next = this.peek(lookahead + 1);

      while (reg.decimalDigit.test(next)) {
        lookahead += 1;
        upperBound += next;
        next = this.peek(lookahead + 1);
      }

      if (next !== "}") {
        return false;
      }

      if (upperBound) {
        return Number(lowerBound) <= Number(upperBound);
      }

      return true;
    }.bind(this);

    var translateUFlag = function(body) {
      // The BMP character to use as a replacement for astral symbols when
      // translating an ES6 "u"-flagged pattern to an ES5-compatible
      // approximation.
      // Note: replacing with '\uFFFF' enables false positives in unlikely
      // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid pattern
      // that would not be detected by this substitution.
      var astralSubstitute = "\uFFFF";

      return body
        // Replace every Unicode escape sequence with the equivalent BMP
        // character or a constant ASCII code point in the case of astral
        // symbols. (See the above note on `astralSubstitute` for more
        // information.)
        .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function($0, $1, $2) {
          var codePoint = parseInt($1 || $2, 16);
          var literal;

          if (codePoint > 0x10FFFF) {
            malformed = true;
            this.trigger("error", {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ char ]
            });

            return;
          }
          literal = String.fromCharCode(codePoint);

          if (reg.regexpSyntaxChars.test(literal)) {
            return $0;
          }

          if (codePoint <= 0xFFFF) {
            return String.fromCharCode(codePoint);
          }
          return astralSubstitute;
        }.bind(this))
        // Replace each paired surrogate with a single ASCII symbol to avoid
        // throwing on regular expressions that are only valid in combination
        // with the "u" flag.
        .replace(
          /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
          astralSubstitute
        );
    }.bind(this);

    // Regular expressions must start with '/'
    if (!this.prereg || char !== "/") {
      return null;
    }

    index += 1;
    terminated = false;

    // Try to get everything in between slashes. A couple of
    // cases aside (see scanRegexpEscapeSequence) we don't really
    // care whether the resulting expression is valid or not.
    // We will check that later using the RegExp object.

    while (index < length) {
      // Because an iteration of this loop may terminate in a number of
      // distinct locations, `isCharSetRange` is re-set at the onset of
      // iteration.
      isCharSetRange &= char === "-";
      char = this.peek(index);
      value += char;
      body += char;

      if (isCharSet) {
        if (char === "]") {
          if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") {
            isCharSet = false;
          }
        } else if (char === "-") {
          isCharSetRange = true;
        }
      }

      if (char === "\\") {
        escapeSequence = scanRegexpEscapeSequence();

        if (isCharSet && (this.peek(index) === "-" || isCharSetRange) &&
          reg.regexpCharClasses.test(escapeSequence)) {
          this.triggerAsync(
            "error",
            {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ "Character class used in range" ]
            },
            checks,
            hasUFlag
          );
        }

        continue;
      }

      if (isCharSet) {
        index += 1;
        continue;
      }

      if (char === "{" && !hasInvalidQuantifier) {
        hasInvalidQuantifier = !checkQuantifier();
      }

      if (char === "[") {
        isCharSet = true;
        index += 1;
        continue;
      } else if (char === "(") {
        isGroup = true;

        if (this.peek(index + 1) === "?" &&
          (this.peek(index + 2) === "=" || this.peek(index + 2) === "!")) {
          isQuantifiable = true;
        }
      } else if (char === ")") {
        if (isQuantifiable) {
          isQuantifiable = false;

          if (reg.regexpQuantifiers.test(this.peek(index + 1))) {
            this.triggerAsync(
              "error",
              {
                code: "E016",
                line: this.line,
                character: this.char,
                data: [ "Quantified quantifiable" ]
              },
              checks,
              hasUFlag
            );
          }
        } else {
          groupCount += 1;
        }

        isGroup = false;
      } else if (char === "/") {
        body = body.substr(0, body.length - 1);
        terminated = true;
        index += 1;
        break;
      }

      index += 1;
    }

    // A regular expression that was never closed is an
    // error from which we cannot recover.

    if (!terminated) {
      this.trigger("error", {
        code: "E015",
        line: this.line,
        character: this.from
      });

      return void this.trigger("fatal", {
        line: this.line,
        from: this.from
      });
    }

    // Parse flags (if any).

    while (index < length) {
      char = this.peek(index);
      if (!/[gimyus]/.test(char)) {
        break;
      }
      if (char === "y") {
        if (!state.inES6(true)) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "Sticky RegExp flag", "6" ]
            },
            checks,
            function() { return true; }
          );
        }
      } else if (char === "u") {
        if (!state.inES6(true)) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "Unicode RegExp flag", "6" ]
            },
            checks,
            function() { return true; }
          );
        }

        var hasInvalidEscape = (function(groupReferences, groupCount, escapedChars, reg) {
          var hasInvalidGroup = groupReferences.some(function(groupReference) {
            if (groupReference > groupCount) {
              return true;
            }
          });

          if (hasInvalidGroup) {
            return true;
          }

          return !escapedChars.split("").every(function(escapedChar) {
              return escapedChar === "u" ||
                escapedChar === "/" ||
                reg.regexpCharClasses.test(escapedChar) ||
                reg.regexpSyntaxChars.test(escapedChar);
            });
        }(groupReferences, groupCount, escapedChars, reg));

        if (hasInvalidEscape) {
          malformedDesc = "Invalid escape";
        } else if (hasInvalidQuantifier) {
          malformedDesc = "Invalid quantifier";
        }

        body = translateUFlag(body);
      } else if (char === "s") {
        if (!state.inES9()) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "DotAll RegExp flag", "9" ]
            },
            checks,
            function() { return true; }
          );
        }
        if (value.indexOf("s") > -1) {
          malformedDesc = "Duplicate RegExp flag";
        }
      } else {
        es5Flags += char;
      }

      if (allFlags.indexOf(char) > -1) {
        malformedDesc = "Duplicate RegExp flag";
      }
      allFlags += char;

      value += char;
      allFlags += char;
      index += 1;
    }

    if (allFlags.indexOf("u") === -1) {
      this.triggerAsync("warning", {
        code: "W147",
        line: this.line,
        character: this.char
      }, checks, function() { return state.option.regexpu; });
    }

    // Check regular expression for correctness.

    try {
      new RegExp(body, es5Flags);
    } catch (err) {
      /**
       * Because JSHint relies on the current engine's RegExp parser to
       * validate RegExp literals, the description (exposed as the "data"
       * property on the error object) is platform dependent.
       */
      malformedDesc = err.message;
    }

    if (malformedDesc) {
      malformed = true;
      this.trigger("error", {
        code: "E016",
        line: this.line,
        character: this.char,
        data: [ malformedDesc ]
      });
    } else if (allFlags.indexOf("s") > -1 && !reg.regexpDot.test(body)) {
      this.trigger("warning", {
        code: "W148",
        line: this.line,
        character: this.char
      });
    }

    return {
      type: Token.RegExp,
      value: value,
      isMalformed: malformed
    };
  },

  /*
   * Scan for any occurrence of non-breaking spaces. Non-breaking spaces
   * can be mistakenly typed on OS X with option-space. Non UTF-8 web
   * pages with non-breaking pages produce syntax errors.
   */
  scanNonBreakingSpaces: function() {
    return state.option.nonbsp ?
      this.input.search(/(\u00A0)/) : -1;
  },

  /*
   * Produce the next raw token or return 'null' if no tokens can be matched.
   * This method skips over all space characters.
   */
  next: function(checks) {
    this.from = this.char;

    // Move to the next non-space character.
    while (reg.whitespace.test(this.peek())) {
      this.from += 1;
      this.skip();
    }

    // Methods that work with multi-line structures and move the
    // character pointer.

    var match = this.scanComments(checks) ||
      this.scanStringLiteral(checks) ||
      this.scanTemplateLiteral(checks);

    if (match) {
      return match;
    }

    // Methods that don't move the character pointer.

    match =
      this.scanRegExp(checks) ||
      this.scanPunctuator() ||
      this.scanKeyword() ||
      this.scanIdentifier(checks) ||
      this.scanNumericLiteral(checks);

    if (match) {
      this.skip(match.tokenLength || match.value.length);
      return match;
    }

    // No token could be matched, give up.

    return null;
  },

  /*
   * Switch to the next line and reset all char pointers. Once
   * switched, this method also checks for other minor warnings.
   */
  nextLine: function(checks) {
    var char;

    if (this.line >= this.getLines().length) {
      return false;
    }

    this.input = this.getLines()[this.line];
    this.line += 1;
    this.char = 1;
    this.from = 1;

    var inputTrimmed = this.input.trim();

    var startsWith = function() {
      return _.some(arguments, function(prefix) {
        return inputTrimmed.indexOf(prefix) === 0;
      });
    };

    var endsWith = function() {
      return _.some(arguments, function(suffix) {
        return inputTrimmed.indexOf(suffix, inputTrimmed.length - suffix.length) !== -1;
      });
    };

    // If we are ignoring linter errors, replace the input with empty string
    // if it doesn't already at least start or end a multi-line comment
    if (this.ignoringLinterErrors === true) {
      if (!startsWith("/*", "//") && !(this.inComment && endsWith("*/"))) {
        this.input = "";
      }
    }

    char = this.scanNonBreakingSpaces();
    if (char >= 0) {
      this.triggerAsync(
        "warning",
        { code: "W125", line: this.line, character: char + 1 },
        checks,
        function() { return true; }
      );
    }

    this.input = this.input.replace(/\t/g, state.tab);

    // If there is a limit on line length, warn when lines get too
    // long.

    if (!this.ignoringLinterErrors && state.option.maxlen &&
      state.option.maxlen < this.input.length) {
      var inComment = this.inComment ||
        startsWith.call(inputTrimmed, "//") ||
        startsWith.call(inputTrimmed, "/*");

      var shouldTriggerError = !inComment || !reg.maxlenException.test(inputTrimmed);

      if (shouldTriggerError) {
        this.triggerAsync(
          "warning",
          { code: "W101", line: this.line, character: this.input.length },
          checks,
          function() { return true; }
        );
      }
    }

    return true;
  },

  /*
   * Produce the next token. This function is called by advance() to get
   * the next token. It returns a token in a JSLint-compatible format.
   */
  token: function() {
    /*jshint loopfunc:true */
    var checks = asyncTrigger();
    var token;

    // Produce a token object.
    var create = function(type, value, isProperty, token) {
      /*jshint validthis:true */
      var obj;

      if (type !== "(endline)" && type !== "(end)") {
        this.prereg = false;
      }

      if (type === "(punctuator)") {
        switch (value) {
        case ".":
        case ")":
        case "~":
        case "#":
        case "]":
        case "}":
        case "++":
        case "--":
          this.prereg = false;
          break;
        default:
          this.prereg = true;
        }

        obj = Object.create(state.syntax[value] || state.syntax["(error)"]);
      }

      if (type === "(identifier)") {
        if (value === "return" || value === "case" || value === "yield" ||
            value === "typeof" || value === "instanceof" || value === "void" ||
            value === "await") {
          this.prereg = true;
        }

        if (_.has(state.syntax, value)) {
          obj = Object.create(state.syntax[value] || state.syntax["(error)"]);
        }
      }

      if (type === "(template)" || type === "(template middle)") {
        this.prereg = true;
      }

      if (!obj) {
        obj = Object.create(state.syntax[type]);
      }

      obj.identifier = (type === "(identifier)");
      obj.type = obj.type || type;
      obj.value = value;
      obj.line = this.line;
      obj.character = this.char;
      obj.from = this.from;
      if (obj.identifier && token) obj.raw_text = token.text || token.value;
      if (token && token.startLine && token.startLine !== this.line) {
        obj.startLine = token.startLine;
      }
      if (token && token.context) {
        // Context of current token
        obj.context = token.context;
      }
      if (token && token.depth) {
        // Nested template depth
        obj.depth = token.depth;
      }
      if (token && token.isUnclosed) {
        // Mark token as unclosed string / template literal
        obj.isUnclosed = token.isUnclosed;
      }

      if (isProperty && obj.identifier) {
        obj.isProperty = isProperty;
      }

      obj.check = checks.check;

      return obj;
    }.bind(this);

    for (;;) {
      if (!this.input.length) {
        if (this.nextLine(checks)) {
          return create("(endline)", "");
        }

        if (this.exhausted) {
          return null;
        }

        this.exhausted = true;
        return create("(end)", "");
      }

      token = this.next(checks);

      if (!token) {
        if (this.input.length) {
          // Unexpected character.
          this.trigger("error", {
            code: "E024",
            line: this.line,
            character: this.char,
            data: [ this.peek() ]
          });

          this.input = "";
        }

        continue;
      }

      switch (token.type) {
      case Token.StringLiteral:
        this.triggerAsync("String", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value,
          quote: token.quote
        }, checks, function() { return true; });

        return create("(string)", token.value, null, token);

      case Token.TemplateHead:
        this.trigger("TemplateHead", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(template)", token.value, null, token);

      case Token.TemplateMiddle:
        this.trigger("TemplateMiddle", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(template middle)", token.value, null, token);

      case Token.TemplateTail:
        this.trigger("TemplateTail", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(template tail)", token.value, null, token);

      case Token.NoSubstTemplate:
        this.trigger("NoSubstTemplate", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(no subst template)", token.value, null, token);

      case Token.Identifier:
        this.triggerAsync("Identifier", {
          line: this.line,
          char: this.char,
          from: this.from,
          name: token.value,
          raw_name: token.text,
          isProperty: state.tokens.curr.id === "."
        }, checks, function() { return true; });

        /* falls through */
      case Token.Keyword:
        return create("(identifier)", token.value, state.tokens.curr.id === ".", token);

      case Token.NumericLiteral:
        if (token.isMalformed) {
          // This condition unequivocally describes a syntax error.
          // TODO: Re-factor as an "error" (not a "warning").
          this.trigger("warning", {
            code: "W045",
            line: this.line,
            character: this.char,
            data: [ token.value ]
          });
        }

        this.triggerAsync("warning", {
          code: "W114",
          line: this.line,
          character: this.char,
          data: [ "0x-" ]
        }, checks, function() { return token.base === 16 && state.jsonMode; });

        this.triggerAsync("warning", {
          code: "W115",
          line: this.line,
          character: this.char
        }, checks, function() {
          return state.isStrict() && token.base === 8 && token.isLegacy;
        });

        this.trigger("Number", {
          line: this.line,
          char: this.char,
          from: this.from,
          value: token.value,
          base: token.base,
          isMalformed: token.isMalformed
        });

        return create("(number)", token.value);

      case Token.RegExp:
        return create("(regexp)", token.value);

      case Token.Comment:
        if (token.isSpecial) {
          return {
            id: '(comment)',
            value: token.value,
            body: token.body,
            type: token.commentType,
            isSpecial: token.isSpecial,
            line: this.line,
            character: this.char,
            from: this.from
          };
        }

        break;

      default:
        return create("(punctuator)", token.value);
      }
    }
  }
};

exports.Lexer = Lexer;
exports.Context = Context;


/***/ }),
/* 454 */
/*!*********************************************!*\
  !*** ./node_modules/jshint/src/messages.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var _ = __webpack_require__(/*! lodash */ 158);

var errors = {
  // JSHint options
  E001: "Bad {a}option: '{b}'.",
  E002: "Bad option value.",

  // JSHint input
  E003: "Expected a JSON value.",
  E004: "Input is neither a string nor an array of strings.",
  E005: "Input is empty.",
  E006: "Unexpected early end of program.",

  // Strict mode
  E007: "Missing \"use strict\" statement.",
  E008: "Strict violation.",
  E009: "Option 'validthis' can't be used in a global scope.",
  E010: "'with' is not allowed in strict mode.",

  // Constants
  E011: "'{a}' has already been declared.",
  E012: "const '{a}' is initialized to 'undefined'.",
  E013: "Attempting to override '{a}' which is a constant.",

  // Regular expressions
  E014: "A regular expression literal can be confused with '/='.",
  E015: "Unclosed regular expression.",
  E016: "Invalid regular expression.",

  // Tokens
  E017: "Unclosed comment.",
  E018: "Unbegun comment.",
  E019: "Unmatched '{a}'.",
  E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.",
  E021: "Expected '{a}' and instead saw '{b}'.",
  E022: "Line breaking error '{a}'.",
  E023: "Missing '{a}'.",
  E024: "Unexpected '{a}'.",
  E025: "Missing ':' on a case clause.",
  E026: "Missing '}' to match '{' from line {a}.",
  E027: "Missing ']' to match '[' from line {a}.",
  E028: "Illegal comma.",
  E029: "Unclosed string.",

  // Everything else
  E030: "Expected an identifier and instead saw '{a}'.",
  E031: "Bad assignment.", // FIXME: Rephrase
  E032: "Expected a small integer or 'false' and instead saw '{a}'.",
  E033: "Expected an operator and instead saw '{a}'.",
  E034: "get/set are ES5 features.",
  E035: "Missing property name.",
  E036: "Expected to see a statement and instead saw a block.",
  E037: null,
  E038: null,
  E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.",
  E040: "Each value should have its own case label.",
  E041: "Unrecoverable syntax error.",
  E042: "Stopping.",
  E043: "Too many errors.",
  E044: null,
  E045: "Invalid for each loop.",
  E046: "Yield expressions may only occur within generator functions.",
  E047: null,
  E048: "{a} declaration not directly within block.",
  E049: "A {a} cannot be named '{b}'.",
  E050: "Mozilla requires the yield expression to be parenthesized here.",
  E051: null,
  E052: "Unclosed template literal.",
  E053: "{a} declarations are only allowed at the top level of module scope.",
  E054: "Class properties must be methods. Expected '(' but instead saw '{a}'.",
  E055: "The '{a}' option cannot be set after any executable code.",
  E056: "'{a}' was used before it was declared, which is illegal for '{b}' variables.",
  E057: "Invalid meta property: '{a}.{b}'.",
  E058: "Missing semicolon.",
  E059: "Incompatible values for the '{a}' and '{b}' linting options.",
  E060: "Non-callable values cannot be used as the second operand to instanceof.",
  E061: "Invalid position for 'yield' expression (consider wrapping in parenthesis).",
  E062: "Rest parameter does not a support default value.",
  E063: "Super property may only be used within method bodies.",
  E064: "Super call may only be used within class method bodies.",
  E065: "Functions defined outside of strict mode with non-simple parameter lists may not " +
    "enable strict mode.",
  E066: "Asynchronous iteration is only available with for-of loops."
};

var warnings = {
  W001: "'hasOwnProperty' is a really bad name.",
  W002: "Value of '{a}' may be overwritten in IE 8 and earlier.",
  W003: "'{a}' was used before it was defined.",
  W004: "'{a}' is already defined.",
  W005: "A dot following a number can be confused with a decimal point.",
  W006: "Confusing minuses.",
  W007: "Confusing plusses.",
  W008: "A leading decimal point can be confused with a dot: '{a}'.",
  W009: "The array literal notation [] is preferable.",
  W010: "The object literal notation {} is preferable.",
  W011: null,
  W012: null,
  W013: null,
  W014: "Misleading line break before '{a}'; readers may interpret this as an expression boundary.",
  W015: null,
  W016: "Unexpected use of '{a}'.",
  W017: "Bad operand.",
  W018: "Confusing use of '{a}'.",
  W019: "Use the isNaN function to compare with NaN.",
  W020: "Read only.",
  W021: "Reassignment of '{a}', which is a {b}. " +
    "Use 'var' or 'let' to declare bindings that may change.",
  W022: "Do not assign to the exception parameter.",
  W023: null,
  W024: "Expected an identifier and instead saw '{a}' (a reserved word).",
  W025: "Missing name in function declaration.",
  W026: "Inner functions should be listed at the top of the outer function.",
  W027: "Unreachable '{a}' after '{b}'.",
  W028: "Label '{a}' on {b} statement.",
  W030: "Expected an assignment or function call and instead saw an expression.",
  W031: "Do not use 'new' for side effects.",
  W032: "Unnecessary semicolon.",
  W033: "Missing semicolon.",
  W034: "Unnecessary directive \"{a}\".",
  W035: "Empty block.",
  W036: "Unexpected /*member '{a}'.",
  W037: "'{a}' is a statement label.",
  W038: "'{a}' used out of scope.",
  W039: null,
  W040: "If a strict mode function is executed using function invocation, " +
    "its 'this' value will be undefined.",
  W041: null,
  W042: "Avoid EOL escaping.",
  W043: "Bad escaping of EOL. Use option multistr if needed.",
  W044: "Bad or unnecessary escaping.", /* TODO(caitp): remove W044 */
  W045: "Bad number '{a}'.",
  W046: "Don't use extra leading zeros '{a}'.",
  W047: "A trailing decimal point can be confused with a dot: '{a}'.",
  W048: "Unexpected control character in regular expression.",
  W049: "Unexpected escaped character '{a}' in regular expression.",
  W050: "JavaScript URL.",
  W051: "Variables should not be deleted.",
  W052: "Unexpected '{a}'.",
  W053: "Do not use {a} as a constructor.",
  W054: "The Function constructor is a form of eval.",
  W055: "A constructor name should start with an uppercase letter.",
  W056: "Bad constructor.",
  W057: "Weird construction. Is 'new' necessary?",
  W058: "Missing '()' invoking a constructor.",
  W059: "Avoid arguments.{a}.",
  W060: "document.write can be a form of eval.",
  W061: "eval can be harmful.",
  W062: "Wrap an immediate function invocation in parens " +
    "to assist the reader in understanding that the expression " +
    "is the result of a function, and not the function itself.",
  W063: "Math is not a function.",
  W064: "Missing 'new' prefix when invoking a constructor.",
  W065: "Missing radix parameter.",
  W066: "Implied eval. Consider passing a function instead of a string.",
  W067: "Bad invocation.",
  W068: "Wrapping non-IIFE function literals in parens is unnecessary.",
  W069: "['{a}'] is better written in dot notation.",
  W070: "Extra comma. (it breaks older versions of IE)",
  W071: "This function has too many statements. ({a})",
  W072: "This function has too many parameters. ({a})",
  W073: "Blocks are nested too deeply. ({a})",
  W074: "This function's cyclomatic complexity is too high. ({a})",
  W075: "Duplicate {a} '{b}'.",
  W076: "Unexpected parameter '{a}' in get {b} function.",
  W077: "Expected a single parameter in set {a} function.",
  W078: "Setter is defined without getter.",
  W079: "Redefinition of '{a}'.",
  W080: "It's not necessary to initialize '{a}' to 'undefined'.",
  W081: null,
  W082: "Function declarations should not be placed in blocks. " +
    "Use a function expression or move the statement to the top of " +
    "the outer function.",
  W083: "Functions declared within loops referencing an outer scoped " +
    "variable may lead to confusing semantics. ({a})",
  W084: "Expected a conditional expression and instead saw an assignment.",
  W085: "Don't use 'with'.",
  W086: "Expected a 'break' statement before '{a}'.",
  W087: "Forgotten 'debugger' statement?",
  W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.",
  W089: "The body of a for in should be wrapped in an if statement to filter " +
    "unwanted properties from the prototype.",
  W090: "'{a}' is not a statement label.",
  W091: null,
  W093: "Did you mean to return a conditional instead of an assignment?",
  W094: "Unexpected comma.",
  W095: "Expected a string and instead saw {a}.",
  W096: "The '{a}' key may produce unexpected results.",
  W097: "Use the function form of \"use strict\".",
  W098: "'{a}' is defined but never used.",
  W099: null,
  W100: null,
  W101: "Line is too long.",
  W102: null,
  W103: "The '{a}' property is deprecated.",
  W104: "'{a}' is available in ES{b} (use 'esversion: {b}') or Mozilla JS extensions (use moz).",
  W105: null,
  W106: "Identifier '{a}' is not in camel case.",
  W107: "Script URL.",
  W108: "Strings must use doublequote.",
  W109: "Strings must use singlequote.",
  W110: "Mixed double and single quotes.",
  W112: "Unclosed string.",
  W113: "Control character in string: {a}.",
  W114: "Avoid {a}.",
  W115: "Octal literals are not allowed in strict mode.",
  W116: "Expected '{a}' and instead saw '{b}'.",
  W117: "'{a}' is not defined.",
  W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).",
  W119: "'{a}' is only available in ES{b} (use 'esversion: {b}').",
  W120: "You might be leaking a variable ({a}) here.",
  W121: "Extending prototype of native object: '{a}'.",
  W122: "Invalid typeof value '{a}'",
  W123: "'{a}' is already defined in outer scope.",
  W124: "A generator function should contain at least one yield expression.",
  W125: "This line contains non-breaking spaces: http://jshint.com/docs/options/#nonbsp",
  W126: "Unnecessary grouping operator.",
  W127: "Unexpected use of a comma operator.",
  W128: "Empty array elements require elision=true.",
  W129: "'{a}' is defined in a future version of JavaScript. Use a " +
    "different variable name to avoid migration issues.",
  W130: "Invalid element after rest element.",
  W131: "Invalid parameter after rest parameter.",
  W132: "`var` declarations are forbidden. Use `let` or `const` instead.",
  W133: "Invalid for-{a} loop left-hand-side: {b}.",
  W134: "The '{a}' option is only available when linting ECMAScript {b} code.",
  W135: "{a} may not be supported by non-browser environments.",
  W136: "'{a}' must be in function scope.",
  W137: "Empty destructuring: this is unnecessary and can be removed.",
  W138: "Regular parameters should not come after default parameters.",
  W139: "Function expressions should not be used as the second operand to instanceof.",
  W140: "Missing comma.",
  W141: "Empty {a}: this is unnecessary and can be removed.",
  W142: "Empty {a}: consider replacing with `import '{b}';`.",
  W143: "Assignment to properties of a mapped arguments object may cause " +
    "unexpected changes to formal parameters.",
  W144: "'{a}' is a non-standard language feature. Enable it using the '{b}' unstable option.",
  W145: "Superfluous 'case' clause.",
  W146: "Unnecessary `await` expression.",
  W147: "Regular expressions should include the 'u' flag.",
  W148: "Unnecessary RegExp 's' flag."
};

var info = {
  I001: "Comma warnings can be turned off with 'laxcomma'.",
  I002: null,
  I003: "ES5 option is now set per default"
};

exports.errors = {};
exports.warnings = {};
exports.info = {};

_.each(errors, function(desc, code) {
  exports.errors[code] = { code: code, desc: desc };
});

_.each(warnings, function(desc, code) {
  exports.warnings[code] = { code: code, desc: desc };
});

_.each(info, function(desc, code) {
  exports.info[code] = { code: code, desc: desc };
});


/***/ }),
/* 455 */
/*!*****************************************!*\
  !*** ./node_modules/jshint/src/vars.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
// jshint -W001



// Identifiers provided by the ECMAScript standard.

exports.reservedVars = {
  NaN       : false,
  undefined : false
};

exports.ecmaIdentifiers = {
  3: {
    Array              : false,
    Boolean            : false,
    Date               : false,
    decodeURI          : false,
    decodeURIComponent : false,
    encodeURI          : false,
    encodeURIComponent : false,
    Error              : false,
    "eval"             : false,
    EvalError          : false,
    Function           : false,
    hasOwnProperty     : false,
    Infinity           : false,
    isFinite           : false,
    isNaN              : false,
    Math               : false,
    Number             : false,
    Object             : false,
    parseInt           : false,
    parseFloat         : false,
    RangeError         : false,
    ReferenceError     : false,
    RegExp             : false,
    String             : false,
    SyntaxError        : false,
    TypeError          : false,
    URIError           : false
  },
  5: {
    JSON               : false
  },
  6: {
    ArrayBuffer        : false,
    DataView           : false,
    Float32Array       : false,
    Float64Array       : false,
    Int8Array          : false,
    Int16Array         : false,
    Int32Array         : false,
    Map                : false,
    Promise            : false,
    Proxy              : false,
    Reflect            : false,
    Set                : false,
    Symbol             : false,
    Uint8Array         : false,
    Uint16Array        : false,
    Uint32Array        : false,
    Uint8ClampedArray  : false,
    WeakMap            : false,
    WeakSet            : false
  },
  8: {
    Atomics            : false,
    SharedArrayBuffer  : false
  }
};

// Global variables commonly provided by a web browser environment.

exports.browser = {
  Audio                : false,
  Blob                 : false,
  addEventListener     : false, // EventTarget
  applicationCache     : false,
  atob                 : false, // WindowOrWorkerGlobalScope
  blur                 : false,
  btoa                 : false, // WindowOrWorkerGlobalScope
  cancelAnimationFrame : false,
  CanvasGradient       : false,
  CanvasPattern        : false,
  CanvasRenderingContext2D: false,
  CSS                  : false,
  CSSImportRule        : false,
  CSSGroupingRule      : false,
  CSSMarginRule        : false,
  CSSMediaRule         : false,
  CSSNamespaceRule     : false,
  CSSPageRule          : false,
  CSSRule              : false,
  CSSRuleList          : false,
  CSSStyleDeclaration  : false,
  CSSStyleRule         : false,
  CSSStyleSheet        : false,
  clearInterval        : false, // WindowOrWorkerGlobalScope
  clearTimeout         : false, // WindowOrWorkerGlobalScope
  close                : false,
  closed               : false,
  Comment              : false,
  CompositionEvent     : false,
  createImageBitmap    : false, // WindowOrWorkerGlobalScope
  CustomEvent          : false,
  DOMParser            : false,
  defaultStatus        : false,
  dispatchEvent        : false, // EventTarget
  Document             : false,
  document             : false,
  DocumentFragment     : false,
  Element              : false,
  ElementTimeControl   : false,
  Event                : false,
  event                : false,
  fetch                : false,
  File                 : false,
  FileList             : false,
  FileReader           : false,
  FormData             : false,
  focus                : false,
  frames               : false,
  getComputedStyle     : false,
  Headers              : false,
  HTMLAnchorElement    : false,
  HTMLAreaElement      : false,
  HTMLAudioElement     : false,
  HTMLBaseElement      : false,
  HTMLBlockquoteElement: false,
  HTMLBodyElement      : false,
  HTMLBRElement        : false,
  HTMLButtonElement    : false,
  HTMLCanvasElement    : false,
  HTMLCollection       : false,
  HTMLDataElement      : false,
  HTMLDataListElement  : false,
  HTMLDetailsElement   : false,
  HTMLDialogElement    : false,
  HTMLDirectoryElement : false,
  HTMLDivElement       : false,
  HTMLDListElement     : false,
  HTMLElement          : false,
  HTMLEmbedElement     : false,
  HTMLFieldSetElement  : false,
  HTMLFontElement      : false,
  HTMLFormElement      : false,
  HTMLFrameElement     : false,
  HTMLFrameSetElement  : false,
  HTMLHeadElement      : false,
  HTMLHeadingElement   : false,
  HTMLHRElement        : false,
  HTMLHtmlElement      : false,
  HTMLIFrameElement    : false,
  HTMLImageElement     : false,
  HTMLInputElement     : false,
/* HTMLIsIndexElement was removed from the WHATWG HTML spec;
   see https://github.com/whatwg/html/pull/1095.
   HTMLIsIndexElement has been removed from browsers; see:
   • Chromium Removal: https://codereview.chromium.org/96653004/
   • Gecko Removal: https://bugzilla.mozilla.org/show_bug.cgi?id=1266495
   • WebKit Removal: https://bugs.webkit.org/show_bug.cgi?id=7139.
   See also the discussion at https://github.com/jshint/jshint/pull/3222. */
  HTMLIsIndexElement   : false,
  HTMLLabelElement     : false,
  HTMLLayerElement     : false,
  HTMLLegendElement    : false,
  HTMLLIElement        : false,
  HTMLLinkElement      : false,
  HTMLMapElement       : false,
  HTMLMarqueeElement   : false,
  HTMLMediaElement     : false,
  HTMLMenuElement      : false,
  HTMLMetaElement      : false,
  HTMLMeterElement     : false,
  HTMLModElement       : false,
  HTMLObjectElement    : false,
  HTMLOListElement     : false,
  HTMLOptGroupElement  : false,
  HTMLOptionElement    : false,
  HTMLParagraphElement : false,
  HTMLParamElement     : false,
  HTMLPictureElement   : false,
  HTMLPreElement       : false,
  HTMLProgressElement  : false,
  HTMLQuoteElement     : false,
  HTMLScriptElement    : false,
  HTMLSelectElement    : false,
  HTMLSlotElement      : false,
  HTMLSourceElement    : false,
  HTMLStyleElement     : false,
  HTMLTableCaptionElement: false,
  HTMLTableCellElement : false,
  HTMLTableColElement  : false,
  HTMLTableElement     : false,
  HTMLTableRowElement  : false,
  HTMLTableSectionElement: false,
  HTMLTemplateElement  : false,
  HTMLTextAreaElement  : false,
  HTMLTimeElement      : false,
  HTMLTitleElement     : false,
  HTMLTrackElement     : false,
  HTMLUListElement     : false,
  HTMLVideoElement     : false,
  history              : false,
  Image                : false,
  IntersectionObserver : false,
  Intl                 : false,
  length               : false,
  localStorage         : false,
  location             : false,
  matchMedia           : false,
  MediaList            : false,
  MediaRecorder        : false,
  MessageChannel       : false,
  MessageEvent         : false,
  MessagePort          : false,
  MouseEvent           : false,
  moveBy               : false,
  moveTo               : false,
  MutationObserver     : false,
  name                 : false,
  Node                 : false,
  NodeFilter           : false,
  NodeList             : false,
  Notification         : false,
  navigator            : false,
  onbeforeunload       : true,
  onblur               : true,
  onerror              : true,
  onfocus              : true,
  onload               : true,
  onresize             : true,
  onunload             : true,
  open                 : false,
  openDatabase         : false,
  opener               : false,
  Option               : false,
  origin               : false, // WindowOrWorkerGlobalScope
  parent               : false,
  performance          : false,
  print                : false,
  queueMicrotask       : false, // WindowOrWorkerGlobalScope
  Range                : false,
  requestAnimationFrame : false,
  removeEventListener  : false, // EventTarget
  Request              : false,
  resizeBy             : false,
  resizeTo             : false,
  Response             : false,
  screen               : false,
  scroll               : false,
  scrollBy             : false,
  scrollTo             : false,
  sessionStorage       : false,
  setInterval          : false, // WindowOrWorkerGlobalScope
  setTimeout           : false, // WindowOrWorkerGlobalScope
  SharedWorker         : false,
  status               : false,
  Storage              : false,
  StyleSheet           : false,
  SVGAElement          : false,
  SVGAltGlyphDefElement: false,
  SVGAltGlyphElement   : false,
  SVGAltGlyphItemElement: false,
  SVGAngle             : false,
  SVGAnimateColorElement: false,
  SVGAnimateElement    : false,
  SVGAnimateMotionElement: false,
  SVGAnimateTransformElement: false,
  SVGAnimatedAngle     : false,
  SVGAnimatedBoolean   : false,
  SVGAnimatedEnumeration: false,
  SVGAnimatedInteger   : false,
  SVGAnimatedLength    : false,
  SVGAnimatedLengthList: false,
  SVGAnimatedNumber    : false,
  SVGAnimatedNumberList: false,
  SVGAnimatedPathData  : false,
  SVGAnimatedPoints    : false,
  SVGAnimatedPreserveAspectRatio: false,
  SVGAnimatedRect      : false,
  SVGAnimatedString    : false,
  SVGAnimatedTransformList: false,
  SVGAnimationElement  : false,
  SVGCSSRule           : false,
  SVGCircleElement     : false,
  SVGClipPathElement   : false,
  SVGColor             : false,
  SVGColorProfileElement: false,
  SVGColorProfileRule  : false,
  SVGComponentTransferFunctionElement: false,
  SVGCursorElement     : false,
  SVGDefsElement       : false,
  SVGDescElement       : false,
  SVGDocument          : false,
  SVGElement           : false,
  SVGElementInstance   : false,
  SVGElementInstanceList: false,
  SVGEllipseElement    : false,
  SVGExternalResourcesRequired: false,
  SVGFEBlendElement    : false,
  SVGFEColorMatrixElement: false,
  SVGFEComponentTransferElement: false,
  SVGFECompositeElement: false,
  SVGFEConvolveMatrixElement: false,
  SVGFEDiffuseLightingElement: false,
  SVGFEDisplacementMapElement: false,
  SVGFEDistantLightElement: false,
  SVGFEFloodElement    : false,
  SVGFEFuncAElement    : false,
  SVGFEFuncBElement    : false,
  SVGFEFuncGElement    : false,
  SVGFEFuncRElement    : false,
  SVGFEGaussianBlurElement: false,
  SVGFEImageElement    : false,
  SVGFEMergeElement    : false,
  SVGFEMergeNodeElement: false,
  SVGFEMorphologyElement: false,
  SVGFEOffsetElement   : false,
  SVGFEPointLightElement: false,
  SVGFESpecularLightingElement: false,
  SVGFESpotLightElement: false,
  SVGFETileElement     : false,
  SVGFETurbulenceElement: false,
  SVGFilterElement     : false,
  SVGFilterPrimitiveStandardAttributes: false,
  SVGFitToViewBox      : false,
  SVGFontElement       : false,
  SVGFontFaceElement   : false,
  SVGFontFaceFormatElement: false,
  SVGFontFaceNameElement: false,
  SVGFontFaceSrcElement: false,
  SVGFontFaceUriElement: false,
  SVGForeignObjectElement: false,
  SVGGElement          : false,
  SVGGlyphElement      : false,
  SVGGlyphRefElement   : false,
  SVGGradientElement   : false,
  SVGHKernElement      : false,
  SVGICCColor          : false,
  SVGImageElement      : false,
  SVGLangSpace         : false,
  SVGLength            : false,
  SVGLengthList        : false,
  SVGLineElement       : false,
  SVGLinearGradientElement: false,
  SVGLocatable         : false,
  SVGMPathElement      : false,
  SVGMarkerElement     : false,
  SVGMaskElement       : false,
  SVGMatrix            : false,
  SVGMetadataElement   : false,
  SVGMissingGlyphElement: false,
  SVGNumber            : false,
  SVGNumberList        : false,
  SVGPaint             : false,
  SVGPathElement       : false,
  SVGPathSeg           : false,
  SVGPathSegArcAbs     : false,
  SVGPathSegArcRel     : false,
  SVGPathSegClosePath  : false,
  SVGPathSegCurvetoCubicAbs: false,
  SVGPathSegCurvetoCubicRel: false,
  SVGPathSegCurvetoCubicSmoothAbs: false,
  SVGPathSegCurvetoCubicSmoothRel: false,
  SVGPathSegCurvetoQuadraticAbs: false,
  SVGPathSegCurvetoQuadraticRel: false,
  SVGPathSegCurvetoQuadraticSmoothAbs: false,
  SVGPathSegCurvetoQuadraticSmoothRel: false,
  SVGPathSegLinetoAbs  : false,
  SVGPathSegLinetoHorizontalAbs: false,
  SVGPathSegLinetoHorizontalRel: false,
  SVGPathSegLinetoRel  : false,
  SVGPathSegLinetoVerticalAbs: false,
  SVGPathSegLinetoVerticalRel: false,
  SVGPathSegList       : false,
  SVGPathSegMovetoAbs  : false,
  SVGPathSegMovetoRel  : false,
  SVGPatternElement    : false,
  SVGPoint             : false,
  SVGPointList         : false,
  SVGPolygonElement    : false,
  SVGPolylineElement   : false,
  SVGPreserveAspectRatio: false,
  SVGRadialGradientElement: false,
  SVGRect              : false,
  SVGRectElement       : false,
  SVGRenderingIntent   : false,
  SVGSVGElement        : false,
  SVGScriptElement     : false,
  SVGSetElement        : false,
  SVGStopElement       : false,
  SVGStringList        : false,
  SVGStylable          : false,
  SVGStyleElement      : false,
  SVGSwitchElement     : false,
  SVGSymbolElement     : false,
  SVGTRefElement       : false,
  SVGTSpanElement      : false,
  SVGTests             : false,
  SVGTextContentElement: false,
  SVGTextElement       : false,
  SVGTextPathElement   : false,
  SVGTextPositioningElement: false,
  SVGTitleElement      : false,
  SVGTransform         : false,
  SVGTransformList     : false,
  SVGTransformable     : false,
  SVGURIReference      : false,
  SVGUnitTypes         : false,
  SVGUseElement        : false,
  SVGVKernElement      : false,
  SVGViewElement       : false,
  SVGViewSpec          : false,
  SVGZoomAndPan        : false,
  Text                 : false,
  TextDecoder          : false,
  TextEncoder          : false,
  TimeEvent            : false,
  top                  : false,
  URL                  : false,
  WebGLActiveInfo      : false,
  WebGLBuffer          : false,
  WebGLContextEvent    : false,
  WebGLFramebuffer     : false,
  WebGLProgram         : false,
  WebGLRenderbuffer    : false,
  WebGLRenderingContext: false,
  WebGLShader          : false,
  WebGLShaderPrecisionFormat: false,
  WebGLTexture         : false,
  WebGLUniformLocation : false,
  WebSocket            : false,
  window               : false,
  Window               : false,
  Worker               : false,
  XDomainRequest       : false,
  XMLDocument          : false,
  XMLHttpRequest       : false,
  XMLSerializer        : false,
  XPathEvaluator       : false,
  XPathException       : false,
  XPathExpression      : false,
  XPathNamespace       : false,
  XPathNSResolver      : false,
  XPathResult          : false
};

exports.devel = {
  alert  : false,
  confirm: false,
  console: false,
  Debug  : false,
  opera  : false,
  prompt : false
};

exports.worker = {
  addEventListener    : true, // EventTarget
  atob                : true, // WindowOrWorkerGlobalScope
  btoa                : true, // WindowOrWorkerGlobalScope
  clearInterval       : true, // WindowOrWorkerGlobalScope
  clearTimeout        : true, // WindowOrWorkerGlobalScope
  createImageBitmap   : true, // WindowOrWorkerGlobalScope
  dispatchEvent       : true, // EventTarget
  importScripts       : true,
  onmessage           : true,
  origin              : true, // WindowOrWorkerGlobalScope
  postMessage         : true,
  queueMicrotask      : true, // WindowOrWorkerGlobalScope
  removeEventListener : true, // EventTarget
  self                : true,
  setInterval         : true, // WindowOrWorkerGlobalScope
  setTimeout          : true, // WindowOrWorkerGlobalScope
  FileReaderSync      : true
};

// Widely adopted global names that are not part of ECMAScript standard
exports.nonstandard = {
  escape  : false,
  unescape: false
};

// Globals provided by popular JavaScript environments.

exports.couch = {
  "require" : false,
  respond   : false,
  getRow    : false,
  emit      : false,
  send      : false,
  start     : false,
  sum       : false,
  log       : false,
  exports   : false,
  module    : false,
  provides  : false
};

exports.node = {
  __filename    : false,
  __dirname     : false,
  arguments     : false,
  GLOBAL        : false,
  global        : false,
  module        : false,
  require       : false,

  // These globals are writeable because Node allows the following
  // usage pattern: var Buffer = require("buffer").Buffer;

  Buffer        : true,
  console       : true,
  exports       : true,
  process       : true,
  setTimeout    : true,
  clearTimeout  : true,
  setInterval   : true,
  clearInterval : true,
  setImmediate  : true, // v0.9.1+
  clearImmediate: true  // v0.9.1+
};

exports.browserify = {
  __filename    : false,
  __dirname     : false,
  global        : false,
  module        : false,
  require       : false,
  Buffer        : true,
  exports       : true,
  process       : true
};

exports.phantom = {
  phantom      : true,
  require      : true,
  WebPage      : true,
  console      : true, // in examples, but undocumented
  exports      : true  // v1.7+
};

exports.qunit = {
  asyncTest      : false,
  deepEqual      : false,
  equal          : false,
  expect         : false,
  module         : false,
  notDeepEqual   : false,
  notEqual       : false,
  notOk          : false,
  notPropEqual   : false,
  notStrictEqual : false,
  ok             : false,
  propEqual      : false,
  QUnit          : false,
  raises         : false,
  start          : false,
  stop           : false,
  strictEqual    : false,
  test           : false,
  "throws"       : false
};

exports.rhino = {
  arguments    : false,
  defineClass  : false,
  deserialize  : false,
  gc           : false,
  help         : false,
  importClass  : false,
  importPackage: false,
  "java"       : false,
  load         : false,
  loadClass    : false,
  Packages     : false,
  print        : false,
  quit         : false,
  readFile     : false,
  readUrl      : false,
  runCommand   : false,
  seal         : false,
  serialize    : false,
  spawn        : false,
  sync         : false,
  toint32      : false,
  version      : false
};

exports.shelljs = {
  target       : false,
  echo         : false,
  exit         : false,
  cd           : false,
  pwd          : false,
  ls           : false,
  find         : false,
  cp           : false,
  rm           : false,
  mv           : false,
  mkdir        : false,
  test         : false,
  cat          : false,
  sed          : false,
  grep         : false,
  which        : false,
  dirs         : false,
  pushd        : false,
  popd         : false,
  env          : false,
  exec         : false,
  chmod        : false,
  config       : false,
  error        : false,
  tempdir      : false
};

exports.typed = {
  ArrayBuffer         : false,
  ArrayBufferView     : false,
  DataView            : false,
  Float32Array        : false,
  Float64Array        : false,
  Int16Array          : false,
  Int32Array          : false,
  Int8Array           : false,
  Uint16Array         : false,
  Uint32Array         : false,
  Uint8Array          : false,
  Uint8ClampedArray   : false
};

exports.wsh = {
  ActiveXObject            : true,
  Enumerator               : true,
  GetObject                : true,
  ScriptEngine             : true,
  ScriptEngineBuildVersion : true,
  ScriptEngineMajorVersion : true,
  ScriptEngineMinorVersion : true,
  VBArray                  : true,
  WSH                      : true,
  WScript                  : true,
  XDomainRequest           : true
};

// Globals provided by popular JavaScript libraries.

exports.dojo = {
  dojo     : false,
  dijit    : false,
  dojox    : false,
  define   : false,
  "require": false
};

exports.jquery = {
  "$"    : false,
  jQuery : false
};

exports.mootools = {
  "$"           : false,
  "$$"          : false,
  Asset         : false,
  Browser       : false,
  Chain         : false,
  Class         : false,
  Color         : false,
  Cookie        : false,
  Core          : false,
  Document      : false,
  DomReady      : false,
  DOMEvent      : false,
  DOMReady      : false,
  Drag          : false,
  Element       : false,
  Elements      : false,
  Event         : false,
  Events        : false,
  Fx            : false,
  Group         : false,
  Hash          : false,
  HtmlTable     : false,
  IFrame        : false,
  IframeShim    : false,
  InputValidator: false,
  instanceOf    : false,
  Keyboard      : false,
  Locale        : false,
  Mask          : false,
  MooTools      : false,
  Native        : false,
  Options       : false,
  OverText      : false,
  Request       : false,
  Scroller      : false,
  Slick         : false,
  Slider        : false,
  Sortables     : false,
  Spinner       : false,
  Swiff         : false,
  Tips          : false,
  Type          : false,
  typeOf        : false,
  URI           : false,
  Window        : false
};

exports.prototypejs = {
  "$"               : false,
  "$$"              : false,
  "$A"              : false,
  "$F"              : false,
  "$H"              : false,
  "$R"              : false,
  "$break"          : false,
  "$continue"       : false,
  "$w"              : false,
  Abstract          : false,
  Ajax              : false,
  Class             : false,
  Enumerable        : false,
  Element           : false,
  Event             : false,
  Field             : false,
  Form              : false,
  Hash              : false,
  Insertion         : false,
  ObjectRange       : false,
  PeriodicalExecuter: false,
  Position          : false,
  Prototype         : false,
  Selector          : false,
  Template          : false,
  Toggle            : false,
  Try               : false,
  Autocompleter     : false,
  Builder           : false,
  Control           : false,
  Draggable         : false,
  Draggables        : false,
  Droppables        : false,
  Effect            : false,
  Sortable          : false,
  SortableObserver  : false,
  Sound             : false,
  Scriptaculous     : false
};

exports.yui = {
  YUI       : false,
  Y         : false,
  YUI_config: false
};

exports.mocha = {
  // Global (for config etc.)
  mocha       : false,
  // BDD
  describe    : false,
  xdescribe   : false,
  it          : false,
  xit         : false,
  context     : false,
  xcontext    : false,
  before      : false,
  after       : false,
  beforeEach  : false,
  afterEach   : false,
  // TDD
  suite         : false,
  test          : false,
  setup         : false,
  teardown      : false,
  suiteSetup    : false,
  suiteTeardown : false
};

exports.jasmine = {
  jasmine     : false,
  describe    : false,
  xdescribe   : false,
  it          : false,
  xit         : false,
  beforeEach  : false,
  afterEach   : false,
  setFixtures : false,
  loadFixtures: false,
  spyOn       : false,
  expect      : false,
  // Jasmine 1.3
  runs        : false,
  waitsFor    : false,
  waits       : false,
  // Jasmine 2.1
  beforeAll   : false,
  afterAll    : false,
  fail        : false,
  fdescribe   : false,
  fit         : false,
  pending     : false,
  // Jasmine 2.6
  spyOnProperty: false
};


/***/ }),
/* 456 */
/*!***********************************!*\
  !*** (webpack)/buildin/module.js ***!
  \***********************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

module.exports = function(module) {
	if (!module.webpackPolyfill) {
		module.deprecate = function() {};
		module.paths = [];
		// module.parent = undefined by default
		if (!module.children) module.children = [];
		Object.defineProperty(module, "loaded", {
			enumerable: true,
			get: function() {
				return module.l;
			}
		});
		Object.defineProperty(module, "id", {
			enumerable: true,
			get: function() {
				return module.i;
			}
		});
		module.webpackPolyfill = 1;
	}
	return module;
};


/***/ }),
/* 457 */
/*!*******************************************!*\
  !*** ./node_modules/jshint/src/jshint.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/*!
 * JSHint, by JSHint Community.
 *
 * This file (and this file only) is licensed under the same slightly modified
 * MIT license that JSLint is. It stops evil-doers everywhere:
 *
 *   Copyright (c) 2002 Douglas Crockford  (www.JSLint.com)
 *
 *   Permission is hereby granted, free of charge, to any person obtaining
 *   a copy of this software and associated documentation files (the "Software"),
 *   to deal in the Software without restriction, including without limitation
 *   the rights to use, copy, modify, merge, publish, distribute, sublicense,
 *   and/or sell copies of the Software, and to permit persons to whom
 *   the Software is furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included
 *   in all copies or substantial portions of the Software.
 *
 *   The Software shall be used for Good, not Evil.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 *   DEALINGS IN THE SOFTWARE.
 *
 */

/*jshint quotmark:double */
/*exported console */

var _            = __webpack_require__(/*! lodash */ 158);
var events       = __webpack_require__(/*! events */ 133);
var vars         = __webpack_require__(/*! ./vars.js */ 455);
var messages     = __webpack_require__(/*! ./messages.js */ 454);
var Lexer        = __webpack_require__(/*! ./lex.js */ 453).Lexer;
var reg          = __webpack_require__(/*! ./reg.js */ 239);
var state        = __webpack_require__(/*! ./state.js */ 238).state;
var style        = __webpack_require__(/*! ./style.js */ 447);
var options      = __webpack_require__(/*! ./options.js */ 446);
var scopeManager = __webpack_require__(/*! ./scope-manager.js */ 445);
var prodParams   = __webpack_require__(/*! ./prod-params.js */ 444);

// We need this module here because environments such as IE and Rhino
// don't necessarilly expose the 'console' API and browserify uses
// it to log things. It's a sad state of affair, really.
var console = __webpack_require__(/*! console-browserify */ 443);

// We build the application inside a function so that we produce only a singleton
// variable. That function will be invoked immediately, and its return value is
// the JSHINT function itself.

var JSHINT = (function() {
  "use strict";

  var api, // Extension API

    // These are operators that should not be used with the ! operator.
    bang = {
      "<"  : true,
      "<=" : true,
      "==" : true,
      "===": true,
      "!==": true,
      "!=" : true,
      ">"  : true,
      ">=" : true,
      "+"  : true,
      "-"  : true,
      "*"  : true,
      "/"  : true,
      "%"  : true
    },

    declared, // Globals that were declared using /*global ... */ syntax.

    functions, // All of the functions

    inblock,
    indent,
    lookahead,
    lex,
    member,
    membersOnly,
    predefined,    // Global variables defined by option

    urls,

    extraModules = [],
    emitter = new events.EventEmitter();

  function checkOption(name, isStable, t) {
    var type, validNames;

    if (isStable) {
      type = "";
      validNames = options.validNames;
    } else {
      type = "unstable ";
      validNames = options.unstableNames;
    }

    name = name.trim();

    if (/^[+-]W\d{3}$/g.test(name)) {
      return true;
    }

    if (validNames.indexOf(name) === -1) {
      if (t.type !== "jslint" && !_.has(options.removed, name)) {
        error("E001", t, type, name);
        return false;
      }
    }

    return true;
  }

  function isString(obj) {
    return Object.prototype.toString.call(obj) === "[object String]";
  }

  function isIdentifier(tkn, value) {
    if (!tkn)
      return false;

    if (!tkn.identifier || tkn.value !== value)
      return false;

    return true;
  }

  /**
   * ES3 defined a set of "FutureReservedWords" in order "to allow for the
   * possibility of future adoption of [proposed] extensions."
   *
   * ES5 reduced the set of FutureReservedWords, in some cases by using them to
   * define new syntactic forms (e.g. `class` and `const`) and in other cases
   * by simply allowing their use as Identifiers (e.g. `int` and `goto`).
   * Separately, ES5 introduced new restrictions on certain tokens, but limited
   * the restriction to strict mode code (e.g. `let` and `yield`).
   *
   * This function determines if a given token describes a reserved word
   * according to the current state of the parser.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {Token} token
   */
  function isReserved(context, token) {
    if (!token.reserved) {
      return false;
    }
    var meta = token.meta;

    if (meta && meta.isFutureReservedWord) {
      if (state.inES5()) {
        // ES3 FutureReservedWord in an ES5 environment.
        if (!meta.es5) {
          return false;
        }

        if (token.isProperty) {
          return false;
        }
      }
    } else if (meta && meta.es5 && !state.inES5()) {
      return false;
    }

    // Some identifiers are reserved only within a strict mode environment.
    if (meta && meta.strictOnly && state.inES5()) {
      if (!state.option.strict && !state.isStrict()) {
        return false;
      }
    }

    if (token.id === "await" && (!(context & prodParams.async) && !state.option.module)) {
      return false;
    }

    return true;
  }

  function supplant(str, data) {
    return str.replace(/\{([^{}]*)\}/g, function(a, b) {
      var r = data[b];
      return typeof r === "string" || typeof r === "number" ? r : a;
    });
  }

  function combine(dest, src) {
    Object.keys(src).forEach(function(name) {
      if (_.has(JSHINT.blacklist, name)) return;
      dest[name] = src[name];
    });
  }

  function processenforceall() {
    if (state.option.enforceall) {
      for (var enforceopt in options.bool.enforcing) {
        if (state.option[enforceopt] === undefined &&
            !options.noenforceall[enforceopt]) {
          state.option[enforceopt] = true;
        }
      }
      for (var relaxopt in options.bool.relaxing) {
        if (state.option[relaxopt] === undefined) {
          state.option[relaxopt] = false;
        }
      }
    }
  }

  /**
   * Apply all linting options according to the status of the `state` object.
   */
  function applyOptions() {
    var badESOpt = null;
    processenforceall();

    /**
     * TODO: Remove in JSHint 3
     */
    badESOpt = state.inferEsVersion();
    if (badESOpt) {
      quit("E059", state.tokens.next, "esversion", badESOpt);
    }

    if (state.inES5()) {
      combine(predefined, vars.ecmaIdentifiers[5]);
    }

    if (state.inES6()) {
      combine(predefined, vars.ecmaIdentifiers[6]);
    }

    if (state.inES8()) {
      combine(predefined, vars.ecmaIdentifiers[8]);
    }

    /**
     * Use `in` to check for the presence of any explicitly-specified value for
     * `globalstrict` because both `true` and `false` should trigger an error.
     */
    if (state.option.strict === "global" && "globalstrict" in state.option) {
      quit("E059", state.tokens.next, "strict", "globalstrict");
    }

    if (state.option.module) {
      /**
       * TODO: Extend this restriction to *all* ES6-specific options.
       */
      if (!state.inES6()) {
        warning("W134", state.tokens.next, "module", 6);
      }
    }

    if (state.option.regexpu) {
      /**
       * TODO: Extend this restriction to *all* ES6-specific options.
       */
      if (!state.inES6()) {
        warning("W134", state.tokens.next, "regexpu", 6);
      }
    }

    if (state.option.couch) {
      combine(predefined, vars.couch);
    }

    if (state.option.qunit) {
      combine(predefined, vars.qunit);
    }

    if (state.option.rhino) {
      combine(predefined, vars.rhino);
    }

    if (state.option.shelljs) {
      combine(predefined, vars.shelljs);
      combine(predefined, vars.node);
    }
    if (state.option.typed) {
      combine(predefined, vars.typed);
    }

    if (state.option.phantom) {
      combine(predefined, vars.phantom);
    }

    if (state.option.prototypejs) {
      combine(predefined, vars.prototypejs);
    }

    if (state.option.node) {
      combine(predefined, vars.node);
      combine(predefined, vars.typed);
    }

    if (state.option.devel) {
      combine(predefined, vars.devel);
    }

    if (state.option.dojo) {
      combine(predefined, vars.dojo);
    }

    if (state.option.browser) {
      combine(predefined, vars.browser);
      combine(predefined, vars.typed);
    }

    if (state.option.browserify) {
      combine(predefined, vars.browser);
      combine(predefined, vars.typed);
      combine(predefined, vars.browserify);
    }

    if (state.option.nonstandard) {
      combine(predefined, vars.nonstandard);
    }

    if (state.option.jasmine) {
      combine(predefined, vars.jasmine);
    }

    if (state.option.jquery) {
      combine(predefined, vars.jquery);
    }

    if (state.option.mootools) {
      combine(predefined, vars.mootools);
    }

    if (state.option.worker) {
      combine(predefined, vars.worker);
    }

    if (state.option.wsh) {
      combine(predefined, vars.wsh);
    }

    if (state.option.yui) {
      combine(predefined, vars.yui);
    }

    if (state.option.mocha) {
      combine(predefined, vars.mocha);
    }
  }

  // Produce an error warning.
  function quit(code, token, a, b) {
    var percentage = Math.floor((token.line / state.lines.length) * 100);
    var message = messages.errors[code].desc;

    var exception = {
      name: "JSHintError",
      line: token.line,
      character: token.from,
      message: message + " (" + percentage + "% scanned).",
      raw: message,
      code: code,
      a: a,
      b: b
    };

    exception.reason = supplant(message, exception) + " (" + percentage +
      "% scanned).";

    throw exception;
  }

  function removeIgnoredMessages() {
    var ignored = state.ignoredLines;

    if (_.isEmpty(ignored)) return;
    JSHINT.errors = _.reject(JSHINT.errors, function(err) { return ignored[err.line] });
  }

  function warning(code, t, a, b, c, d) {
    var ch, l, w, msg;

    if (/^W\d{3}$/.test(code)) {
      if (state.ignored[code])
        return;

      msg = messages.warnings[code];
    } else if (/E\d{3}/.test(code)) {
      msg = messages.errors[code];
    } else if (/I\d{3}/.test(code)) {
      msg = messages.info[code];
    }

    t = t || state.tokens.next || {};
    if (t.id === "(end)") {  // `~
      t = state.tokens.curr;
    }

    l = t.line;
    ch = t.from;

    w = {
      id: "(error)",
      raw: msg.desc,
      code: msg.code,
      evidence: state.lines[l - 1] || "",
      line: l,
      character: ch,
      scope: JSHINT.scope,
      a: a,
      b: b,
      c: c,
      d: d
    };

    w.reason = supplant(msg.desc, w);
    JSHINT.errors.push(w);

    removeIgnoredMessages();

    if (JSHINT.errors.length >= state.option.maxerr)
      quit("E043", t);

    return w;
  }

  function warningAt(m, l, ch, a, b, c, d) {
    return warning(m, {
      line: l,
      from: ch
    }, a, b, c, d);
  }

  function error(m, t, a, b, c, d) {
    warning(m, t, a, b, c, d);
  }

  function errorAt(m, l, ch, a, b, c, d) {
    return error(m, {
      line: l,
      from: ch
    }, a, b, c, d);
  }

  // Tracking of "internal" scripts, like eval containing a static string
  function addEvalCode(elem, token) {
    JSHINT.internals.push({
      id: "(internal)",
      elem: elem,
      token: token,
      code: token.value.replace(/([^\\])(\\*)\2\\n/g, "$1\n")
    });
  }

  /**
   * Process an inline linting directive
   *
   * @param {Token} directiveToken - the directive-bearing comment token
   * @param {Token} previous - the token that preceeds the directive
   */
  function lintingDirective(directiveToken, previous) {
    var body = directiveToken.body.split(",")
      .map(function(s) { return s.trim(); });
    var predef = {};

    if (directiveToken.type === "falls through") {
      previous.caseFallsThrough = true;
      return;
    }

    if (directiveToken.type === "globals") {
      body.forEach(function(g, idx) {
        g = g.split(":");
        var key = g[0].trim();
        var val = (g[1] || "").trim();

        if (key === "-" || !key.length) {
          // Ignore trailing comma
          if (idx > 0 && idx === body.length - 1) {
            return;
          }
          error("E002", directiveToken);
          return;
        }

        if (key.charAt(0) === "-") {
          key = key.slice(1);
          val = false;

          JSHINT.blacklist[key] = key;
          delete predefined[key];
        } else {
          predef[key] = (val === "true");
        }
      });

      combine(predefined, predef);

      for (var key in predef) {
        if (_.has(predef, key)) {
          declared[key] = directiveToken;
        }
      }
    }

    if (directiveToken.type === "exported") {
      body.forEach(function(e, idx) {
        if (!e.length) {
          // Ignore trailing comma
          if (idx > 0 && idx === body.length - 1) {
            return;
          }
          error("E002", directiveToken);
          return;
        }

        state.funct["(scope)"].addExported(e);
      });
    }

    if (directiveToken.type === "members") {
      membersOnly = membersOnly || {};

      body.forEach(function(m) {
        var ch1 = m.charAt(0);
        var ch2 = m.charAt(m.length - 1);

        if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) {
          m = m
            .substr(1, m.length - 2)
            .replace("\\\"", "\"");
        }

        membersOnly[m] = false;
      });
    }

    var numvals = [
      "maxstatements",
      "maxparams",
      "maxdepth",
      "maxcomplexity",
      "maxerr",
      "maxlen",
      "indent"
    ];

    if (directiveToken.type === "jshint" || directiveToken.type === "jslint" ||
      directiveToken.type === "jshint.unstable") {
      body.forEach(function(g) {
        g = g.split(":");
        var key = g[0].trim();
        var val = (g[1] || "").trim();

        if (!checkOption(key, directiveToken.type !== "jshint.unstable", directiveToken)) {
          return;
        }

        if (numvals.indexOf(key) >= 0) {
          // GH988 - numeric options can be disabled by setting them to `false`
          if (val !== "false") {
            val = +val;

            if (typeof val !== "number" || !isFinite(val) || val <= 0 || Math.floor(val) !== val) {
              error("E032", directiveToken, g[1].trim());
              return;
            }

            state.option[key] = val;
          } else {
            state.option[key] = key === "indent" ? 4 : false;
          }

          return;
        }

        if (key === "validthis") {
          // `validthis` is valid only within a function scope.

          if (state.funct["(global)"])
            return void error("E009");

          if (val !== "true" && val !== "false")
            return void error("E002", directiveToken);

          state.option.validthis = (val === "true");
          return;
        }

        if (key === "quotmark") {
          switch (val) {
          case "true":
          case "false":
            state.option.quotmark = (val === "true");
            break;
          case "double":
          case "single":
            state.option.quotmark = val;
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "shadow") {
          switch (val) {
          case "true":
            state.option.shadow = true;
            break;
          case "outer":
            state.option.shadow = "outer";
            break;
          case "false":
          case "inner":
            state.option.shadow = "inner";
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "unused") {
          switch (val) {
          case "true":
            state.option.unused = true;
            break;
          case "false":
            state.option.unused = false;
            break;
          case "vars":
          case "strict":
            state.option.unused = val;
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "latedef") {
          switch (val) {
          case "true":
            state.option.latedef = true;
            break;
          case "false":
            state.option.latedef = false;
            break;
          case "nofunc":
            state.option.latedef = "nofunc";
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "ignore") {
          switch (val) {
          case "line":
            state.ignoredLines[directiveToken.line] = true;
            removeIgnoredMessages();
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "strict") {
          switch (val) {
          case "true":
            state.option.strict = true;
            break;
          case "false":
            state.option.strict = false;
            break;
          case "global":
          case "implied":
            state.option.strict = val;
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "module") {
          /**
           * TODO: Extend this restriction to *all* "environmental" options.
           */
          if (!hasParsedCode(state.funct)) {
            error("E055", directiveToken, "module");
          }
        }

        if (key === "esversion") {
          switch (val) {
          case "3":
          case "5":
          case "6":
          case "7":
          case "8":
          case "9":
            state.option.moz = false;
            state.option.esversion = +val;
            break;
          case "2015":
          case "2016":
          case "2017":
          case "2018":
            state.option.moz = false;
            // Translate specification publication year to version number.
            state.option.esversion = +val - 2009;
            break;
          default:
            error("E002", directiveToken);
          }
          if (!hasParsedCode(state.funct)) {
            error("E055", directiveToken, "esversion");
          }
          return;
        }

        var match = /^([+-])(W\d{3})$/g.exec(key);
        if (match) {
          // ignore for -W..., unignore for +W...
          state.ignored[match[2]] = (match[1] === "-");
          return;
        }

        var tn;
        if (val === "true" || val === "false") {
          if (directiveToken.type === "jslint") {
            tn = options.renamed[key] || key;
            state.option[tn] = (val === "true");

            if (options.inverted[tn] !== undefined) {
              state.option[tn] = !state.option[tn];
            }
          } else if (directiveToken.type === "jshint.unstable") {
            state.option.unstable[key] = (val === "true");
          } else {
            state.option[key] = (val === "true");
          }

          return;
        }

        error("E002", directiveToken);
      });

      applyOptions();
    }
  }

  /**
   * Return a token beyond the token available in `state.tokens.next`. If no
   * such token exists, return the "(end)" token. This function is used to
   * determine parsing strategies in cases where the value of the next token
   * does not provide sufficient information, as is the case with `for` loops,
   * e.g.:
   *
   *     for ( var i in ...
   *
   * versus:
   *
   *     for ( var i = ...
   *
   * @param {number} [p] - offset of desired token; defaults to 0
   *
   * @returns {token}
   */
  function peek(p) {
    var i = p || 0, j = lookahead.length, t;

    if (i < j) {
      return lookahead[i];
    }

    while (j <= i) {
      t = lex.token();

      // When the lexer is exhausted, this function should produce the "(end)"
      // token, even in cases where the requested token is beyond the end of
      // the input stream.
      if (!t) {
        // If the lookahead buffer is empty, the expected "(end)" token was
        // already emitted by the most recent invocation of `advance` and is
        // available as the next token.
        if (!lookahead.length) {
          return state.tokens.next;
        }

        return lookahead[j - 1];
      }

      lookahead[j] = t;
      j += 1;
    }

    return t;
  }

  function peekIgnoreEOL() {
    var i = 0;
    var t;
    do {
      t = peek(i++);
    } while (t.id === "(endline)");
    return t;
  }

  /**
   * Consume the next token.
   *
   * @param {string} [expected] - the expected value of the next token's `id`
   *                              property (in the case of punctuators) or
   *                              `value` property (in the case of identifiers
   *                              and literals); if unspecified, any token will
   *                              be accepted
   * @param {object} [relatedToken] - the token that informed the expected
   *                                  value, if any (for example: the opening
   *                                  brace when a closing brace is expected);
   *                                  used to produce more meaningful errors
   */
  function advance(expected, relatedToken) {
    var nextToken = state.tokens.next;

    switch (state.tokens.curr.id) {
    case "(number)":
      if (nextToken.id === ".") {
        warning("W005", state.tokens.curr);
      }
      break;
    case "-":
      if (nextToken.id === "-" || nextToken.id === "--") {
        warning("W006");
      }
      break;
    case "+":
      if (nextToken.id === "+" || nextToken.id === "++") {
        warning("W007");
      }
      break;
    }

    if (expected && nextToken.id !== expected) {
      if (relatedToken) {
        if (nextToken.id === "(end)") {
          error("E019", relatedToken, relatedToken.id);
        } else {
          error("E020", nextToken, expected, relatedToken.id,
            relatedToken.line, nextToken.value);
        }
      } else if (nextToken.type !== "(identifier)" || nextToken.value !== expected) {
        error("E021", nextToken, expected, nextToken.value);
      }
    }

    state.tokens.prev = state.tokens.curr;
    state.tokens.curr = state.tokens.next;
    for (;;) {
      state.tokens.next = lookahead.shift() || lex.token();

      if (!state.tokens.next) { // No more tokens left, give up
        quit("E041", state.tokens.curr);
      }

      if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") {
        return;
      }

      if (state.tokens.next.check) {
        state.tokens.next.check();
      }

      if (state.tokens.next.isSpecial) {
        lintingDirective(state.tokens.next, state.tokens.curr);
      } else {
        if (state.tokens.next.id !== "(endline)") {
          break;
        }
      }
    }
  }

  /**
   * Determine whether a given token is an operator.
   *
   * @param {token} token
   *
   * @returns {boolean}
   */
  function isOperator(token) {
    return token.first || token.right || token.left || token.id === "yield" || token.id === "await";
  }

  function isEndOfExpr(context, curr, next) {
    if (arguments.length <= 1) {
      curr = state.tokens.curr;
      next = state.tokens.next;
    }

    if (next.id === "in" && context & prodParams.noin) {
      return true;
    }
    if (next.id === ";" || next.id === "}" || next.id === ":") {
      return true;
    }
    if (next.infix === curr.infix || curr.ltBoundary === "after" ||
      next.ltBoundary === "before") {
      return curr.line !== startLine(next);
    }
    return false;
  }

  /**
   * The `expression` function is the heart of JSHint's parsing behaior. It is
   * based on the Pratt parser, but it extends that model with a `fud` method.
   * Short for "first null denotation," it it similar to the `nud` ("null
   * denotation") function, but it is only used on the first token of a
   * statement. This simplifies usage in statement-oriented languages like
   * JavaScript.
   *
   * .nud  Null denotation
   * .fud  First null denotation
   * .led  Left denotation
   *  lbp  Left binding power
   *  rbp  Right binding power
   *
   * They are elements of the parsing method called Top Down Operator Precedence.
   *
   * In addition to parsing, this function applies a number of linting patterns.
   *
   * @param {number} context - the parsing context (a bitfield describing
   *                           conditions of the current parsing operation
   *                           which can influence how the next tokens are
   *                           interpreted); see `prod-params.js` for more
   *                           detail)
   * @param {number} rbp - the right-binding power of the token to be consumed
   */
  function expression(context, rbp) {
    var left, isArray = false, isObject = false;
    var initial = context & prodParams.initial;
    var curr;

    context &= ~prodParams.initial;

    state.nameStack.push();

    if (state.tokens.next.id === "(end)")
      error("E006", state.tokens.curr);

    advance();

    if (initial) {
      state.funct["(verb)"] = state.tokens.curr.value;
      state.tokens.curr.beginsStmt = true;
    }

    curr = state.tokens.curr;

    if (initial && curr.fud && (!curr.useFud || curr.useFud(context))) {
      left = state.tokens.curr.fud(context);
    } else {
      if (state.tokens.curr.nud) {
        left = state.tokens.curr.nud(context, rbp);
      } else {
        error("E030", state.tokens.curr, state.tokens.curr.id);
      }

      while (rbp < state.tokens.next.lbp && !isEndOfExpr(context)) {
        isArray = state.tokens.curr.value === "Array";
        isObject = state.tokens.curr.value === "Object";

        // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object()
        // Line breaks in IfStatement heads exist to satisfy the checkJSHint
        // "Line too long." error.
        if (left && (left.value || (left.first && left.first.value))) {
          // If the left.value is not "new", or the left.first.value is a "."
          // then safely assume that this is not "new Array()" and possibly
          // not "new Object()"...
          if (left.value !== "new" ||
            (left.first && left.first.value && left.first.value === ".")) {
            isArray = false;
            // ...In the case of Object, if the left.value and state.tokens.curr.value
            // are not equal, then safely assume that this not "new Object()"
            if (left.value !== state.tokens.curr.value) {
              isObject = false;
            }
          }
        }

        advance();

        if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") {
          warning("W009", state.tokens.curr);
        }

        if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") {
          warning("W010", state.tokens.curr);
        }

        if (left && state.tokens.curr.led) {
          left = state.tokens.curr.led(context, left);
        } else {
          error("E033", state.tokens.curr, state.tokens.curr.id);
        }
      }
    }

    state.nameStack.pop();

    return left;
  }


  // Functions for conformance of style.

  function startLine(token) {
    return token.startLine || token.line;
  }

  function nobreaknonadjacent(left, right) {
    if (!state.option.laxbreak && left.line !== startLine(right)) {
      warning("W014", right, right.value);
    }
  }

  function nolinebreak(t) {
    t = t;
    if (t.line !== startLine(state.tokens.next)) {
      warning("E022", t, t.value);
    }
  }

  function nobreakcomma(left, right) {
    if (left.line !== startLine(right)) {
      if (!state.option.laxcomma) {
        if (parseComma.first) {
          warning("I001");
          parseComma.first = false;
        }
        warning("W014", left, right.value);
      }
    }
  }

  function parseComma(opts) {
    opts = opts || {};

    if (!opts.peek) {
      nobreakcomma(state.tokens.curr, state.tokens.next);
      advance(",");
    } else {
      nobreakcomma(state.tokens.prev, state.tokens.curr);
    }

    if (state.tokens.next.identifier && !(opts.property && state.inES5())) {
      // Keywords that cannot follow a comma operator.
      switch (state.tokens.next.value) {
      case "break":
      case "case":
      case "catch":
      case "continue":
      case "default":
      case "do":
      case "else":
      case "finally":
      case "for":
      case "if":
      case "in":
      case "instanceof":
      case "return":
      case "switch":
      case "throw":
      case "try":
      case "var":
      case "let":
      case "while":
      case "with":
        error("E024", state.tokens.next, state.tokens.next.value);
        return false;
      }
    }

    if (state.tokens.next.type === "(punctuator)") {
      switch (state.tokens.next.value) {
      case "}":
      case "]":
      case ",":
      case ")":
        if (opts.allowTrailing) {
          return true;
        }

        error("E024", state.tokens.next, state.tokens.next.value);
        return false;
      }
    }
    return true;
  }

  /**
   * Factory function for creating "symbols"--objects that will be inherited by
   * tokens. The objects created by this function are stored in a symbol table
   * and set as the prototype of the tokens generated by the lexer.
   *
   * Note that this definition of "symbol" describes an implementation detail
   * of JSHint and is not related to the ECMAScript value type introduced in
   * ES2015.
   *
   * @param {string} s - the name of the token; for keywords (e.g. `void`) and
   *                     delimiters (e.g.. `[`), this is the token's text
   *                     representation; for literals (e.g. numbers) and other
   *                     "special" tokens (e.g. the end-of-file marker) this is
   *                     a parenthetical value
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function symbol(s, p) {
    var x = state.syntax[s];
    if (!x || typeof x !== "object") {
      state.syntax[s] = x = {
        id: s,
        lbp: p,
        // Symbols that accept a right-hand side do so with a binding power
        // that is commonly identical to their left-binding power. (This value
        // is relevant when determining if the grouping operator is necessary
        // to override the precedence of surrounding operators.) Because the
        // exponentiation operator's left-binding power and right-binding power
        // are distinct, the values must be encoded separately.
        rbp: p,
        value: s
      };
    }
    return x;
  }

  /**
   * Convenience function for defining delimiter symbols.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function delim(s) {
    var x = symbol(s, 0);
    x.delim = true;
    return x;
  }

  /**
   * Convenience function for defining statement-denoting symbols.
   *
   * @param {string} s - the name of the symbol
   * @param {function} f - the first null denotation function for the symbol;
   *                       see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function stmt(s, f) {
    var x = delim(s);
    x.identifier = x.reserved = true;
    x.fud = f;
    return x;
  }

  /**
   * Convenience function for defining block-statement-denoting symbols.
   *
   * A block-statement-denoting symbol is one like 'if' or 'for', which will be
   * followed by a block and will not have to end with a semicolon.
   *
   * @param {string} s - the name of the symbol
   * @param {function} - the first null denotation function for the symbol; see
   *                     the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function blockstmt(s, f) {
    var x = stmt(s, f);
    x.block = true;
    return x;
  }
  /**
   * Denote a given JSHint symbol as an identifier and a reserved keyword.
   *
   * @param {object} - a JSHint symbol value
   *
   * @returns {object} - the provided object
   */
  function reserveName(x) {
    var c = x.id.charAt(0);
    if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) {
      x.identifier = x.reserved = true;
    }
    return x;
  }

  /**
   * Convenience function for defining "prefix" symbols--operators that accept
   * expressions as a right-hand side.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - the first null denotation function for the symbol;
   *                         see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function prefix(s, f) {
    var x = symbol(s, 150);
    reserveName(x);

    x.nud = (typeof f === "function") ? f : function(context) {
      this.arity = "unary";
      this.right = expression(context, 150);

      if (this.id === "++" || this.id === "--") {
        if (state.option.plusplus) {
          warning("W016", this, this.id);
        }

        if (this.right) {
          checkLeftSideAssign(context, this.right, this);
        }
      }

      return this;
    };

    return x;
  }

  /**
   * Convenience function for defining "type" symbols--those that describe
   * literal values.
   *
   * @param {string} s - the name of the symbol
   * @param {function} f - the first null denotation function for the symbol;
   *                       see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function type(s, f) {
    var x = delim(s);
    x.type = s;
    x.nud = f;
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for reserved
   * keywords--those that are restricted from use as bindings (and as propery
   * names in ECMAScript 3 environments).
   *
   * @param {string} s - the name of the symbol
   * @param {function} func - the first null denotation function for the
   *                          symbol; see the `expression` function for more
   *                          detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function reserve(name, func) {
    var x = type(name, func);
    x.identifier = true;
    x.reserved = true;
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for keywords that are
   * only reserved in some circumstances.
   *
   * @param {string} name - the name of the symbol
   * @param {object} [meta] - a collection of optional arguments
   * @param {function} [meta.nud] -the null denotation function for the symbol;
   *                   see the `expression` function for more detail
   * @param {boolean} [meta.es5] - `true` if the identifier is reserved
   *                               in ECMAScript 5 or later
   * @param {boolean} [meta.strictOnly] - `true` if the identifier is only
   *                                      reserved in strict mode code.
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function FutureReservedWord(name, meta) {
    var x = type(name, (meta && meta.nud) || state.syntax["(identifier)"].nud);

    meta = meta || {};
    meta.isFutureReservedWord = true;

    x.value = name;
    x.identifier = true;
    x.reserved = true;
    x.meta = meta;

    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for reserved
   * binding identifiers.
   *
   * @param {string} s - the name of the symbol
   * @param {function} v - the first null denotation function for the symbol;
   *                       see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function reservevar(s, v) {
    return reserve(s, function() {
      if (typeof v === "function") {
        v(this);
      }
      return this;
    });
  }

  /**
   * Convenience function for defining "infix" symbols--operators that require
   * operands as both "land-hand side" and "right-hand side".
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - a function to be invoked that consumes the
   *                         right-hand side of the operator
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   * @param {boolean} [w] - if `true`
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function infix(s, f, p, w) {
    var x = symbol(s, p);
    reserveName(x);
    x.infix = true;
    x.led = function(context, left) {
      if (!w) {
        nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
      }
      if ((s === "in" || s === "instanceof") && left.id === "!") {
        warning("W018", left, "!");
      }
      if (typeof f === "function") {
        return f(context, left, this);
      } else {
        this.left = left;
        this.right = expression(context, p);
        return this;
      }
    };
    return x;
  }

  /**
   * Convenience function for defining the `=>` token as used in arrow
   * functions.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function application(s) {
    var x = symbol(s, 42);

    x.infix = true;
    x.led = function(context, left) {
      nobreaknonadjacent(state.tokens.prev, state.tokens.curr);

      this.left = left;
      this.right = doFunction(context, { type: "arrow", loneArg: left });
      return this;
    };
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for relation operators.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - a function to be invoked to enforce any additional
   *                         linting rules.
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function relation(s, f) {
    var x = symbol(s, 100);

    x.infix = true;
    x.led = function(context, left) {
      nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
      this.left = left;
      var right = this.right = expression(context, 100);

      if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) {
        warning("W019", this);
      } else if (f) {
        f.apply(this, [context, left, right]);
      }

      if (!left || !right) {
        quit("E041", state.tokens.curr);
      }

      if (left.id === "!") {
        warning("W018", left, "!");
      }

      if (right.id === "!") {
        warning("W018", right, "!");
      }

      return this;
    };
    return x;
  }

  /**
   * Determine if a given token marks the beginning of a UnaryExpression.
   *
   * @param {object} token
   *
   * @returns {boolean}
   */
  function beginsUnaryExpression(token) {
    return token.arity === "unary" && token.id !== "++" && token.id !== "--";
  }

  var typeofValues = {};
  typeofValues.legacy = [
    // E4X extended the `typeof` operator to return "xml" for the XML and
    // XMLList types it introduced.
    // Ref: 11.3.2 The typeof Operator
    // http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf
    "xml",
    // IE<9 reports "unknown" when the `typeof` operator is applied to an
    // object existing across a COM+ bridge. In lieu of official documentation
    // (which does not exist), see:
    // http://robertnyman.com/2005/12/21/what-is-typeof-unknown/
    "unknown"
  ];
  typeofValues.es3 = [
    "undefined", "boolean", "number", "string", "function", "object",
  ];
  typeofValues.es3 = typeofValues.es3.concat(typeofValues.legacy);
  typeofValues.es6 = typeofValues.es3.concat("symbol");

  /**
   * Validate comparisons between the result of a `typeof` expression and a
   * string literal.
   *
   * @param {token} [left] - one of the values being compared
   * @param {token} [right] - the other value being compared
   * @param {object} state - the global state object (see `state.js`)
   *
   * @returns {boolean} - `false` if the second token describes a `typeof`
   *                       expression and the first token is a string literal
   *                       whose value is never returned by that operator;
   *                       `true` otherwise
   */
  function isTypoTypeof(left, right, state) {
    var values;

    if (state.option.notypeof)
      return false;

    if (!left || !right)
      return false;

    values = state.inES6() ? typeofValues.es6 : typeofValues.es3;

    if (right.type === "(identifier)" && right.value === "typeof" && left.type === "(string)")
      return !_.includes(values, left.value);

    return false;
  }

  /**
   * Determine if a given token describes the built-in `eval` function.
   *
   * @param {token} left
   * @param {object} state - the global state object (see `state.js`)
   *
   * @returns {boolean}
   */
  function isGlobalEval(left, state) {
    var isGlobal = false;

    // permit methods to refer to an "eval" key in their own context
    if (left.type === "this" && state.funct["(context)"] === null) {
      isGlobal = true;
    }
    // permit use of "eval" members of objects
    else if (left.type === "(identifier)") {
      if (state.option.node && left.value === "global") {
        isGlobal = true;
      }

      else if (state.option.browser && (left.value === "window" || left.value === "document")) {
        isGlobal = true;
      }
    }

    return isGlobal;
  }

  /**
   * Determine if a given token describes a property of a built-in object.
   *
   * @param {token} left
   *
   * @returns {boolean}
   */
  function findNativePrototype(left) {
    var natives = [
      "Array", "ArrayBuffer", "Boolean", "Collator", "DataView", "Date",
      "DateTimeFormat", "Error", "EvalError", "Float32Array", "Float64Array",
      "Function", "Infinity", "Intl", "Int16Array", "Int32Array", "Int8Array",
      "Iterator", "Number", "NumberFormat", "Object", "RangeError",
      "ReferenceError", "RegExp", "StopIteration", "String", "SyntaxError",
      "TypeError", "Uint16Array", "Uint32Array", "Uint8Array", "Uint8ClampedArray",
      "URIError"
    ];

    function walkPrototype(obj) {
      if (typeof obj !== "object") return;
      return obj.right === "prototype" ? obj : walkPrototype(obj.left);
    }

    function walkNative(obj) {
      while (!obj.identifier && typeof obj.left === "object")
        obj = obj.left;

      if (obj.identifier && natives.indexOf(obj.value) >= 0 &&
          state.funct["(scope)"].isPredefined(obj.value)) {
        return obj.value;
      }
    }

    var prototype = walkPrototype(left);
    if (prototype) return walkNative(prototype);
  }

  /**
   * Determine if the given token is a valid assignment target; emit errors
   * and/or warnings as appropriate
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {token} left - the left hand side of the assignment
   * @param {token=} assignToken - the token for the assignment, used for
   *                               reporting
   * @param {object=} options - optional object
   * @param {boolean} options.allowDestructuring - whether to allow
   *                                               destructuring binding
   *
   * @returns {boolean} Whether the left hand side is OK
   */
  function checkLeftSideAssign(context, left, assignToken, options) {

    var allowDestructuring = options && options.allowDestructuring;

    assignToken = assignToken || left;

    if (state.option.freeze) {
      var nativeObject = findNativePrototype(left);
      if (nativeObject)
        warning("W121", left, nativeObject);
    }
    if (checkPunctuator(left, "...")) {
      left = left.right;
    }

    if (left.identifier && !left.isMetaProperty) {
      // The `reassign` method also calls `modify`, but we are specific in
      // order to catch function re-assignment and globals re-assignment
      state.funct["(scope)"].block.reassign(left.value, left);
    }

    if (left.id === ".") {
      if (!left.left || left.left.value === "arguments" && !state.isStrict()) {
        warning("W143", assignToken);
      }

      state.nameStack.set(state.tokens.prev);
      return true;
    } else if (left.id === "{" || left.id === "[") {
      if (!allowDestructuring || !left.destructAssign) {
        if (left.id === "{" || !left.left) {
          warning("E031", assignToken);
        } else if (left.left.value === "arguments" && !state.isStrict()) {
          warning("W143", assignToken);
        }
      }

      if (left.id === "[") {
        state.nameStack.set(left.right);
      }

      return true;
    } else if (left.identifier && !isReserved(context, left) && !left.isMetaProperty &&
      left.value !== "eval" && left.value !== "arguments") {
      if (state.funct["(scope)"].labeltype(left.value) === "exception") {
        warning("W022", left);
      }
      state.nameStack.set(left);
      return true;
    }

    error("E031", assignToken);

    return false;
  }

  /**
   * Convenience function for defining JSHint symbols for assignment operators.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - a function to be invoked that consumes the
   *                         right-hand side of the operator (see the `infix`
   *                         function)
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function assignop(s, f, p) {
    var x = infix(s, typeof f === "function" ? f : function(context, left, that) {
      that.left = left;

      checkLeftSideAssign(context, left, that, { allowDestructuring: true });

      that.right = expression(context, 10);

      return that;
    }, p);

    x.exps = true;
    x.assign = true;
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for bitwise operators.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - the left denotation function for the symbol; see
   *                         the `expression` function for more detail
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function bitwise(s, f, p) {
    var x = symbol(s, p);
    reserveName(x);
    x.infix = true;
    x.led = (typeof f === "function") ? f : function(context, left) {
      if (state.option.bitwise) {
        warning("W016", this, this.id);
      }
      this.left = left;
      this.right = expression(context, p);
      return this;
    };
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for bitwise assignment
   * operators. See the `assignop` function for more detail.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function bitwiseassignop(s) {
    return assignop(s, function(context, left, that) {
      if (state.option.bitwise) {
        warning("W016", that, that.id);
      }

      checkLeftSideAssign(context, left, that);

      that.right = expression(context, 10);

      return that;
    }, 20);
  }

  /**
   * Convenience function for defining JSHint symbols for those operators which
   * have a single operand that appears before them in the source code.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function suffix(s) {
    var x = symbol(s, 150);

    x.led = function(context, left) {
      // this = suffix e.g. "++" punctuator
      // left = symbol operated e.g. "a" identifier or "a.b" punctuator
      if (state.option.plusplus) {
        warning("W016", this, this.id);
      }

      checkLeftSideAssign(context, left, this);

      this.left = left;
      return this;
    };
    return x;
  }

  /**
   * Retrieve the value of the current token if it is an identifier and
   * optionally advance the parser.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {boolean} [prop] -`true` if this identifier is that of an object
   *                           property
   * @param {boolean} [preserve] - `true` if the token should not be consumed
   *
   * @returns {string|undefined} - the value of the identifier, if present
   */
  function optionalidentifier(context, prop, preserve) {
    if (!state.tokens.next.identifier) {
      return;
    }

    if (!preserve) {
      advance();
    }

    var curr = state.tokens.curr;
    var val  = state.tokens.curr.value;

    if (!isReserved(context, curr)) {
      return val;
    }

    if (prop) {
      if (state.inES5()) {
        return val;
      }
    }

    if (val === "undefined") {
      return val;
    }

    warning("W024", state.tokens.curr, state.tokens.curr.id);
    return val;
  }

  /**
   * Consume the "..." token which designates "spread" and "rest" operations if
   * it is present. If the operator is repeated, consume every repetition, and
   * issue a single error describing the syntax error.
   *
   * @param {string} operation - either "spread" or "rest"
   *
   * @returns {boolean} a value describing whether or not any tokens were
   *                    consumed in this way
   */
  function spreadrest(operation) {
    if (!checkPunctuator(state.tokens.next, "...")) {
      return false;
    }

    if (!state.inES6(true)) {
      warning("W119", state.tokens.next, operation + " operator", "6");
    }
    advance();

    if (checkPunctuator(state.tokens.next, "...")) {
      warning("E024", state.tokens.next, "...");
      while (checkPunctuator(state.tokens.next, "...")) {
        advance();
      }
    }

    return true;
  }

  /**
   * Ensure that the current token is an identifier and retrieve its value.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {boolean} [prop] -`true` if this identifier is that of an object
   *                           property
   *
   * @returns {string|undefined} - the value of the identifier, if present
   */
  function identifier(context, prop) {
    var i = optionalidentifier(context, prop, false);
    if (i) {
      return i;
    }

    error("E030", state.tokens.next, state.tokens.next.value);

    // The token should be consumed after a warning is issued so the parser
    // can continue as though an identifier were found. The semicolon token
    // should not be consumed in this way so that the parser interprets it as
    // a statement delimeter;
    if (state.tokens.next.id !== ";") {
      advance();
    }
  }


  /**
   * Determine if the provided token may be evaluated and emit a linting
   * warning if this is note the case.
   *
   * @param {token} controlToken
   */
  function reachable(controlToken) {
    var i = 0, t;
    if (state.tokens.next.id !== ";" || controlToken.inBracelessBlock) {
      return;
    }
    for (;;) {
      do {
        t = peek(i);
        i += 1;
      } while (t.id !== "(end)" && t.id === "(comment)");

      if (t.reach) {
        return;
      }
      if (t.id !== "(endline)") {
        if (t.id === "function") {
          if (state.option.latedef === true) {
            warning("W026", t);
          }
          break;
        }

        warning("W027", t, t.value, controlToken.value);
        break;
      }
    }
  }

  /**
   * Consume the semicolon that delimits the statement currently being parsed,
   * emitting relevant warnings/errors as appropriate.
   *
   * @param {token} stmt - token describing the statement under consideration
   */
  function parseFinalSemicolon(stmt) {
    if (state.tokens.next.id !== ";") {
      // don't complain about unclosed templates / strings
      if (state.tokens.next.isUnclosed) return advance();

      var sameLine = startLine(state.tokens.next) === state.tokens.curr.line &&
                     state.tokens.next.id !== "(end)";
      var blockEnd = checkPunctuator(state.tokens.next, "}");

      if (sameLine && !blockEnd && !(stmt.id === "do" && state.inES6(true))) {
        errorAt("E058", state.tokens.curr.line, state.tokens.curr.character);
      } else if (!state.option.asi) {

        // If this is the last statement in a block that ends on the same line
        // *and* option lastsemic is on, ignore the warning.  Otherwise, issue
        // a warning about missing semicolon.
        if (!(blockEnd && sameLine && state.option.lastsemic)) {
          warningAt("W033", state.tokens.curr.line, state.tokens.curr.character);
        }
      }
    } else {
      advance(";");
    }
  }

  /**
   * Consume a statement.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   *
   * @returns {token} - the token describing the statement
   */
  function statement(context) {
    var i = indent, r, t = state.tokens.next, hasOwnScope = false;

    context |= prodParams.initial;

    if (t.id === ";") {
      advance(";");
      return;
    }

    // Is this a labelled statement?
    var res = isReserved(context, t);

    // We're being more tolerant here: if someone uses
    // a FutureReservedWord (that is not meant to start a statement)
    // as a label, we warn but proceed anyway.

    if (res && t.meta && t.meta.isFutureReservedWord && !t.fud) {
      warning("W024", t, t.id);
      res = false;
    }

    if (t.identifier && !res && peek().id === ":") {
      advance();
      advance(":");

      hasOwnScope = true;
      state.funct["(scope)"].stack();
      state.funct["(scope)"].block.addBreakLabel(t.value, { token: state.tokens.curr });

      if (!state.tokens.next.labelled && state.tokens.next.value !== "{") {
        warning("W028", state.tokens.next, t.value, state.tokens.next.value);
      }

      t = state.tokens.next;
    }

    // Is it a lonely block?

    if (t.id === "{") {
      // Is it a switch case block?
      //
      //  switch (foo) {
      //    case bar: { <= here.
      //      ...
      //    }
      //  }
      var iscase = (state.funct["(verb)"] === "case" && state.tokens.curr.value === ":");
      block(context, true, true, false, false, iscase);

      if (hasOwnScope) {
        state.funct["(scope)"].unstack();
      }

      return;
    }

    // Parse the statement.

    r = expression(context, 0);

    if (r && !(r.identifier && r.value === "function") &&
        !(r.type === "(punctuator)" && r.left &&
          r.left.identifier && r.left.value === "function")) {
      if (!state.isStrict() && state.stmtMissingStrict()) {
        warning("E007");
      }
    }

    // Look for the final semicolon.

    if (!t.block) {
      if (!state.option.expr && (!r || !r.exps)) {
        warning("W030", state.tokens.curr);
      } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") {
        warning("W031", t);
      }
      parseFinalSemicolon(t);
    }


    // Restore the indentation.

    indent = i;
    if (hasOwnScope) {
      state.funct["(scope)"].unstack();
    }
    return r;
  }

  /**
   * Consume a series of statements until encountering either the end of the
   * program or a token that interrupts control flow.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   *
   * @returns {Array<token>} - the tokens consumed
   */
  function statements(context) {
    var a = [], p;

    while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") {
      if (state.tokens.next.id === ";") {
        p = peek();

        if (!p || (p.id !== "(" && p.id !== "[")) {
          warning("W032");
        }

        advance(";");
      } else {
        a.push(statement(context));
      }
    }
    return a;
  }


  /**
   * Parse any directives in a directive prologue.
   */
  function directives() {
    var current = state.tokens.next;
    while (state.tokens.next.id === "(string)") {
      var next = peekIgnoreEOL();
      if (!isEndOfExpr(0, current, next)) {
        break;
      }
      current = next;

      advance();
      var directive = state.tokens.curr.value;
      if (state.directive[directive] ||
          (directive === "use strict" && state.option.strict === "implied")) {
        warning("W034", state.tokens.curr, directive);
      }

      // From ECMAScript 2016:
      //
      // > 14.1.2 Static Semantics: Early Errors
      // >
      // > [...]
      // > - It is a Syntax Error if ContainsUseStrict of FunctionBody is true
      // >   and IsSimpleParameterList of FormalParameters is false.
      if (directive === "use strict" && state.inES7() &&
        !state.funct["(global)"] && state.funct["(hasSimpleParams)"] === false) {
        error("E065", state.tokens.curr);
      }

      // there's no directive negation, so always set to true
      state.directive[directive] = true;

      parseFinalSemicolon(current);
    }

    if (state.isStrict()) {
      state.option.undef = true;
    }
  }

  /**
   * Parses a single block. A block is a sequence of statements wrapped in
   * braces.
   *
   * @param {number} context - parsing context
   * @param {boolean} ordinary - `true` for everything but function bodies and
   *                             try blocks
   * @param {boolean} [stmt] - `true` if block can be a single statement (e.g.
   *                           in if/for/while)
   * @param {boolean} [isfunc] - `true` if block is a function body
   * @param {boolean} [isfatarrow] - `true` if its a body of a fat arrow
   *                                 function
   * @param {boolean} [iscase] - `true` if block is a switch case block
   *
   * @returns {token} - the token describing the block
   */
  function block(context, ordinary, stmt, isfunc, isfatarrow, iscase) {
    var a,
      b = inblock,
      old_indent = indent,
      m,
      t,
      d;

    inblock = ordinary;

    t = state.tokens.next;

    var metrics = state.funct["(metrics)"];
    metrics.nestedBlockDepth += 1;
    metrics.verifyMaxNestedBlockDepthPerFunction();

    if (state.tokens.next.id === "{") {
      advance("{");

      // create a new block scope
      state.funct["(scope)"].stack();

      if (state.tokens.next.id !== "}") {
        indent += state.option.indent;
        while (!ordinary && state.tokens.next.from > indent) {
          indent += state.option.indent;
        }

        if (isfunc) {
          m = {};
          for (d in state.directive) {
            m[d] = state.directive[d];
          }
          directives();

          state.funct["(isStrict)"] = state.isStrict();

          if (state.option.strict && state.funct["(context)"]["(global)"]) {
            if (!m["use strict"] && !state.isStrict()) {
              warning("E007");
            }
          }
        }

        a = statements(context);

        metrics.statementCount += a.length;

        indent -= state.option.indent;
      } else if (isfunc) {
        // Ensure property is set for functions with empty bodies.
        state.funct["(isStrict)"] = state.isStrict();
      }

      advance("}", t);

      if (isfunc) {
        state.funct["(scope)"].validateParams(isfatarrow);
        if (m) {
          state.directive = m;
        }
      }

      state.funct["(scope)"].unstack();

      indent = old_indent;
    } else if (!ordinary) {
      if (isfunc) {
        state.funct["(scope)"].stack();

        if (stmt && !isfatarrow && !state.inMoz()) {
          error("W118", state.tokens.curr, "function closure expressions");
        }

        if (isfatarrow) {
          state.funct["(scope)"].validateParams(true);
        }

        var expr = expression(context, 10);

        if (state.option.noreturnawait && context & prodParams.async &&
            expr.identifier && expr.value === "await") {
          warning("W146", expr);
        }

        if (state.option.strict && state.funct["(context)"]["(global)"]) {
          if (!state.isStrict()) {
            warning("E007");
          }
        }

        state.funct["(scope)"].unstack();
      } else {
        error("E021", state.tokens.next, "{", state.tokens.next.value);
      }
    } else {

      state.funct["(scope)"].stack();

      if (!stmt || state.option.curly) {
        warning("W116", state.tokens.next, "{", state.tokens.next.value);
      }

      // JSHint observes Annex B of the ECMAScript specification by default,
      // where function declarations are permitted in the statement positions
      // of IfStatements.
      var supportsFnDecl = state.funct["(verb)"] === "if" ||
        state.tokens.curr.id === "else";

      state.tokens.next.inBracelessBlock = true;
      indent += state.option.indent;
      // test indentation only if statement is in new line
      a = [statement(context)];
      indent -= state.option.indent;

      if (a[0] && a[0].declaration &&
        !(supportsFnDecl && a[0].id === "function")) {
        error("E048", a[0], a[0].id[0].toUpperCase() + a[0].id.slice(1));
      }

      state.funct["(scope)"].unstack();
    }

    // Don't clear and let it propagate out if it is "break", "return" or
    // similar in switch case
    switch (state.funct["(verb)"]) {
    case "break":
    case "continue":
    case "return":
    case "throw":
      if (iscase) {
        break;
      }

      /* falls through */
    default:
      state.funct["(verb)"] = null;
    }

    inblock = b;
    if (ordinary && state.option.noempty && (!a || a.length === 0)) {
      warning("W035", state.tokens.prev);
    }
    metrics.nestedBlockDepth -= 1;
    return a;
  }


  /**
   * Update the global state which tracks all statically-identifiable property
   * names, and emit a warning if the `members` linting directive is in use and
   * does not include the given name.
   *
   * @param {string} m - the property name
   */
  function countMember(m) {
    if (membersOnly && typeof membersOnly[m] !== "boolean") {
      warning("W036", state.tokens.curr, m);
    }
    if (typeof member[m] === "number") {
      member[m] += 1;
    } else {
      member[m] = 1;
    }
  }

  // Build the syntax table by declaring the syntactic elements of the language.

  type("(number)", function() {
    return this;
  });

  type("(string)", function() {
    return this;
  });

  state.syntax["(identifier)"] = {
    type: "(identifier)",
    lbp: 0,
    identifier: true,

    nud: function(context) {
      var v = this.value;

      // If this identifier is the lone parameter to a shorthand "fat arrow"
      // function definition, i.e.
      //
      //     x => x;
      //
      // ...it should not be considered as a variable in the current scope. It
      // will be added to the scope of the new function when the next token is
      // parsed, so it can be safely ignored for now.
      if (state.tokens.next.id === "=>") {
        return this;
      }

      if (isReserved(context, this)) {
        warning("W024", this, v);
      } else if (!state.funct["(comparray)"].check(v)) {
        state.funct["(scope)"].block.use(v, state.tokens.curr);
      }
      return this;
    },

    led: function() {
      error("E033", state.tokens.next, state.tokens.next.value);
    }
  };

  var baseTemplateSyntax = {
    identifier: false,
    template: true,
  };
  state.syntax["(template)"] = _.extend({
    lbp: 155,
    type: "(template)",
    nud: doTemplateLiteral,
    led: doTemplateLiteral,
    noSubst: false
  }, baseTemplateSyntax);

  state.syntax["(template middle)"] = _.extend({
    lbp: 0,
    type: "(template middle)",
    noSubst: false
  }, baseTemplateSyntax);

  state.syntax["(template tail)"] = _.extend({
    lbp: 0,
    type: "(template tail)",
    tail: true,
    noSubst: false
  }, baseTemplateSyntax);

  state.syntax["(no subst template)"] = _.extend({
    lbp: 155,
    type: "(template)",
    nud: doTemplateLiteral,
    led: doTemplateLiteral,
    noSubst: true,
    tail: true // mark as tail, since it's always the last component
  }, baseTemplateSyntax);

  type("(regexp)", function() {
    return this;
  });

  // ECMAScript parser

  delim("(endline)");
  (function(x) {
    x.line = x.from = 0;
  })(delim("(begin)"));
  delim("(end)").reach = true;
  delim("(error)").reach = true;
  delim("}").reach = true;
  delim(")");
  delim("]");
  delim("\"").reach = true;
  delim("'").reach = true;
  delim(";");
  delim(":").reach = true;
  delim("#");

  reserve("else");
  reserve("case").reach = true;
  reserve("catch");
  reserve("default").reach = true;
  reserve("finally");
  reserve("true", function() { return this; });
  reserve("false", function() { return this; });
  reservevar("null");
  reservevar("this", function(x) {
    if (state.isStrict() && !isMethod() &&
        !state.option.validthis && ((state.funct["(statement)"] &&
        state.funct["(name)"].charAt(0) > "Z") || state.funct["(global)"])) {
      warning("W040", x);
    }
  });
  reservevar("super", function(x) {
    superNud.call(state.tokens.curr, x);
  });

  assignop("=", "assign", 20);
  assignop("+=", "assignadd", 20);
  assignop("-=", "assignsub", 20);
  assignop("*=", "assignmult", 20);
  assignop("/=", "assigndiv", 20).nud = function() {
    error("E014");
  };
  assignop("%=", "assignmod", 20);
  assignop("**=", function(context, left, that) {
    if (!state.inES7()) {
      warning("W119", that, "Exponentiation operator", "7");
    }

    that.left = left;

    checkLeftSideAssign(context, left, that);

    that.right = expression(context, 10);

    return that;
  }, 20);

  bitwiseassignop("&=");
  bitwiseassignop("|=");
  bitwiseassignop("^=");
  bitwiseassignop("<<=");
  bitwiseassignop(">>=");
  bitwiseassignop(">>>=");
  infix(",", function(context, left, that) {
    var expr;
    that.exprs = [left];

    if (state.option.nocomma) {
      warning("W127");
    }

    if (!parseComma({ peek: true })) {
      return that;
    }
    while (true) {
      if (!(expr = expression(context, 10))) {
        break;
      }
      that.exprs.push(expr);
      if (state.tokens.next.value !== "," || !parseComma()) {
        break;
      }
    }
    return that;
  }, 10, true);

  infix("?", function(context, left, that) {
    increaseComplexityCount();
    that.left = left;
    that.right = expression(context & ~prodParams.noin, 10);
    advance(":");
    expression(context, 10);
    return that;
  }, 30);

  var orPrecendence = 40;
  infix("||", function(context, left, that) {
    increaseComplexityCount();
    that.left = left;
    that.right = expression(context, orPrecendence);
    return that;
  }, orPrecendence);
  infix("&&", "and", 50);
  // The Exponentiation operator, introduced in ECMAScript 2016
  //
  // ExponentiationExpression[Yield] :
  //   UnaryExpression[?Yield]
  //   UpdateExpression[?Yield] ** ExponentiationExpression[?Yield]
  infix("**", function(context, left, that) {
    if (!state.inES7()) {
      warning("W119", that, "Exponentiation operator", "7");
    }

    // Disallow UnaryExpressions which are not wrapped in parenthesis
    if (!left.paren && beginsUnaryExpression(left)) {
      error("E024", that, "**");
    }

    that.left = left;
    that.right = expression(context, that.rbp);
    return that;
  }, 150);
  state.syntax["**"].rbp = 140;
  bitwise("|", "bitor", 70);
  bitwise("^", "bitxor", 80);
  bitwise("&", "bitand", 90);
  relation("==", function(context, left, right) {
    var eqnull = state.option.eqnull &&
      ((left && left.value) === "null" || (right && right.value) === "null");

    switch (true) {
      case !eqnull && state.option.eqeqeq:
        this.from = this.character;
        warning("W116", this, "===", "==");
        break;
      case isTypoTypeof(right, left, state):
        warning("W122", this, right.value);
        break;
      case isTypoTypeof(left, right, state):
        warning("W122", this, left.value);
        break;
    }

    return this;
  });
  relation("===", function(context, left, right) {
    if (isTypoTypeof(right, left, state)) {
      warning("W122", this, right.value);
    } else if (isTypoTypeof(left, right, state)) {
      warning("W122", this, left.value);
    }
    return this;
  });
  relation("!=", function(context, left, right) {
    var eqnull = state.option.eqnull &&
        ((left && left.value) === "null" || (right && right.value) === "null");

    if (!eqnull && state.option.eqeqeq) {
      this.from = this.character;
      warning("W116", this, "!==", "!=");
    } else if (isTypoTypeof(right, left, state)) {
      warning("W122", this, right.value);
    } else if (isTypoTypeof(left, right, state)) {
      warning("W122", this, left.value);
    }
    return this;
  });
  relation("!==", function(context, left, right) {
    if (isTypoTypeof(right, left, state)) {
      warning("W122", this, right.value);
    } else if (isTypoTypeof(left, right, state)) {
      warning("W122", this, left.value);
    }
    return this;
  });
  relation("<");
  relation(">");
  relation("<=");
  relation(">=");
  bitwise("<<", "shiftleft", 120);
  bitwise(">>", "shiftright", 120);
  bitwise(">>>", "shiftrightunsigned", 120);
  infix("in", "in", 120);
  infix("instanceof", function(context, left, token) {
    var right;
    var scope = state.funct["(scope)"];
    token.left = left;
    token.right = right = expression(context, 120);

    // This condition reflects a syntax error which will be reported by the
    // `expression` function.
    if (!right) {
      return token;
    }

    if (right.id === "(number)" ||
        right.id === "(string)" ||
        right.value === "null" ||
        (right.value === "undefined" && !scope.has("undefined")) ||
        right.arity === "unary" ||
        right.id === "{" ||
        (right.id === "[" && !right.right) ||
        right.id === "(regexp)" ||
        (right.id === "(template)" && !right.tag)) {
      error("E060");
    }

    if (right.id === "function") {
      warning("W139");
    }

    return token;
  }, 120);
  infix("+", function(context, left, that) {
    var right;
    that.left = left;
    that.right = right = expression(context, 130);

    if (left && right && left.id === "(string)" && right.id === "(string)") {
      left.value += right.value;
      left.character = right.character;
      if (!state.option.scripturl && reg.javascriptURL.test(left.value)) {
        warning("W050", left);
      }
      return left;
    }

    return that;
  }, 130);
  prefix("+", "num");
  infix("-", "sub", 130);
  prefix("-", "neg");
  infix("*", "mult", 140);
  infix("/", "div", 140);
  infix("%", "mod", 140);

  suffix("++");
  prefix("++", "preinc");
  state.syntax["++"].exps = true;
  state.syntax["++"].ltBoundary = "before";

  suffix("--");
  prefix("--", "predec");
  state.syntax["--"].exps = true;
  state.syntax["--"].ltBoundary = "before";

  prefix("delete", function(context) {
    this.arity = "unary";
    var p = expression(context, 150);
    if (!p) {
      return this;
    }

    if (p.id !== "." && p.id !== "[") {
      warning("W051");
    }
    this.first = p;

    // The `delete` operator accepts unresolvable references when not in strict
    // mode, so the operand may be undefined.
    if (p.identifier && !state.isStrict()) {
      p.forgiveUndef = true;
    }
    return this;
  }).exps = true;

  prefix("~", function(context) {
    if (state.option.bitwise) {
      warning("W016", this, "~");
    }
    this.arity = "unary";
    this.right = expression(context, 150);
    return this;
  });

  infix("...");

  prefix("!", function(context) {
    this.arity = "unary";
    this.right = expression(context, 150);

    if (!this.right) { // '!' followed by nothing? Give up.
      quit("E041", this);
    }

    if (bang[this.right.id] === true) {
      warning("W018", this, "!");
    }
    return this;
  });

  prefix("typeof", function(context) {
    this.arity = "unary";
    var p = expression(context, 150);
    this.first = this.right = p;

    if (!p) { // 'typeof' followed by nothing? Give up.
      quit("E041", this);
    }

    // The `typeof` operator accepts unresolvable references, so the operand
    // may be undefined.
    if (p.identifier) {
      p.forgiveUndef = true;
    }
    return this;
  });
  prefix("new", function(context) {
    var mp = metaProperty(context, "target", function() {
      if (!state.inES6(true)) {
        warning("W119", state.tokens.prev, "new.target", "6");
      }
      var inFunction, c = state.funct;
      while (c) {
        inFunction = !c["(global)"];
        if (!c["(arrow)"]) { break; }
        c = c["(context)"];
      }
      if (!inFunction) {
        warning("W136", state.tokens.prev, "new.target");
      }
    });
    if (mp) { return mp; }

    var c = expression(context, 155), i;
    if (c && c.id !== "function") {
      if (c.identifier) {
        switch (c.value) {
        case "Number":
        case "String":
        case "Boolean":
        case "Math":
        case "JSON":
          warning("W053", state.tokens.prev, c.value);
          break;
        case "Symbol":
          if (state.inES6()) {
            warning("W053", state.tokens.prev, c.value);
          }
          break;
        case "Function":
          if (!state.option.evil) {
            warning("W054");
          }
          break;
        case "Date":
        case "RegExp":
        case "this":
          break;
        default:
          if (c.id !== "function") {
            i = c.value.substr(0, 1);
            if (state.option.newcap && (i < "A" || i > "Z") &&
              !state.funct["(scope)"].isPredefined(c.value)) {
              warning("W055", state.tokens.curr);
            }
          }
        }
      } else {
        if (c.id !== "." && c.id !== "[" && c.id !== "(") {
          warning("W056", state.tokens.curr);
        }
      }
    } else {
      if (!state.option.supernew)
        warning("W057", this);
    }
    if (state.tokens.next.id !== "(" && !state.option.supernew) {
      warning("W058", state.tokens.curr, state.tokens.curr.value);
    }
    this.first = this.right = c;
    return this;
  });
  state.syntax["new"].exps = true;


  // Class statement
  blockstmt("class", function(context) {
    var className, classNameToken;
    var inexport = context & prodParams.export;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, "class", "6");
    }
    state.inClassBody = true;

    // Class Declaration: 'class <Classname>'
    if (state.tokens.next.identifier && state.tokens.next.value !== "extends") {
      classNameToken = state.tokens.next;
      className = classNameToken.value;
      identifier(context);
      // unintialized, so that the 'extends' clause is parsed while the class is in TDZ
      state.funct["(scope)"].addlabel(className, {
        type: "class",
        initialized: false,
        token: classNameToken
      });
    }

    // Class Declaration: 'class <Classname> extends <Superclass>'
    if (state.tokens.next.value === "extends") {
      advance("extends");
      expression(context, 0);
    }

    if (classNameToken) {
      this.name = className;
      state.funct["(scope)"].initialize(className);
      if (inexport) {
        state.funct["(scope)"].setExported(className, classNameToken);
      }
    }
    state.funct["(scope)"].stack();
    classBody(this, context);
    return this;
  }).exps = true;

  /*
    Class expression

    The Block- and Expression- handling for "class" are almost identical, except for the ordering of steps.
    In an expression:, the name should not be saved into the calling scope, but is still accessible inside the definition, so we open a new scope first, then save the name. We also mark it as used.
  */
  prefix("class", function(context) {
    var className, classNameToken;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, "class", "6");
    }
    state.inClassBody = true;

    // Class Declaration: 'class <Classname>'
    if (state.tokens.next.identifier && state.tokens.next.value !== "extends") {
      classNameToken = state.tokens.next;
      className = classNameToken.value;
      identifier(context);
    }

    // Class Declaration: 'class <Classname> extends <Superclass>'
    if (state.tokens.next.value === "extends") {
      advance("extends");
      expression(context, 0);
    }

    state.funct["(scope)"].stack();
    if (classNameToken) {
      this.name = className;
      state.funct["(scope)"].addlabel(className, {
        type: "class",
        initialized: true,
        token: classNameToken
      });
      state.funct["(scope)"].block.use(className, classNameToken);
    }

    classBody(this, context);
    return this;
  });

  function classBody(classToken, context) {
    var props = Object.create(null);
    var name, accessorType, token, isStatic, inGenerator, hasConstructor;

    if (state.tokens.next.value === "{") {
      advance("{");
    } else {
      warning("W116", state.tokens.curr, "identifier", state.tokens.next.type); //?
      advance();
    }

    while (state.tokens.next.value !== "}") {
      isStatic = false;
      inGenerator = false;
      context &= ~prodParams.preAsync;

      if (state.tokens.next.value === "static") {
        isStatic = true;
        advance();
      }

      if (state.tokens.next.value === "async") {
        if (!checkPunctuator(peek(), "(")) {
          context |= prodParams.preAsync;
          advance();

          nolinebreak(state.tokens.curr);

          if (checkPunctuator(state.tokens.next, "*")) {
            inGenerator = true;
            advance("*");

            if (!state.inES9()) {
              warning("W119", state.tokens.next, "async generators", "9");
            }
          }

          if (!state.inES8()) {
            warning("W119", state.tokens.curr, "async functions", "8");
          }
        }
      }

      if (state.tokens.next.value === "*") {
        inGenerator = true;
        advance();
      }

      token = state.tokens.next;
      switch (token.value) {
        case ";":
          warning("W032", token);
          advance();
          break;
        case "constructor":
          if (isStatic) {
            // treat like a regular method -- static methods can be called 'constructor'
            name = propertyName(context);
            saveProperty(props, name, token, true, isStatic);
            doMethod(classToken, context, name, inGenerator);
          } else {
            if (inGenerator || context & prodParams.preAsync) {
              error("E024", token, token.value);
            }
            if (hasConstructor) {
              error("E024", token, token.value);
            }
            advance();
            doMethod(classToken, context, state.nameStack.infer());
            hasConstructor = true;
          }
          break;
        case "set":
        case "get":
          if (inGenerator) {
            error("E024", token, token.value);
          }
          accessorType = token.value;
          advance();

          if (state.tokens.next.value === "[") {
            name = computedPropertyName(context);
            doMethod(classToken, context, name, false);
          } else {
            name = propertyName(context);
            if (name === "prototype" || name === "constructor") {
              error("E049", state.tokens.curr, "class " + accessorType + "ter method", name);
            }
            saveAccessor(accessorType, props, name, state.tokens.curr, true, isStatic);
            doMethod(classToken, context, state.nameStack.infer(), false);
          }

          break;
        case "[":
          name = computedPropertyName(context);
          doMethod(classToken, context, name, inGenerator);
          // We don't check names (via calling saveProperty()) of computed expressions like ["Symbol.iterator"]()
          break;
        default:
          name = propertyName(context);
          if (!name) {
            error("E024", token, token.value);
            advance();
            break;
          }
          if (name === "prototype") {
            error("E049", token, "class method", name);
          }
          saveProperty(props, name, token, true, isStatic);
          doMethod(classToken, context, name, inGenerator);
          break;
      }
    }
    advance("}");
    checkProperties(props);

    state.inClassBody = false;
    state.funct["(scope)"].unstack();
  }

  function doMethod(classToken, context, name, generator) {
    if (generator) {
      if (!state.inES6()) {
        warning("W119", state.tokens.curr, "function*", "6");
      }
    }

    if (state.tokens.next.value !== "(") {
      error("E054", state.tokens.next, state.tokens.next.value);
      advance();
      if (state.tokens.next.value === "{") {
        // manually cheating the test "invalidClasses", which asserts this particular behavior when a class is misdefined.
        advance();
        if (state.tokens.next.value === "}") {
          warning("W116", state.tokens.next, "(", state.tokens.next.value);
          advance();
          identifier(context);
          advance();
        }
        return;
      } else {
        while (state.tokens.next.value !== "(") {
          advance();
        }
      }
    }

    doFunction(context, { name: name,
        type: generator ? "generator" : null,
        isMethod: true,
        statement: classToken });
  }

  prefix("void").exps = true;

  infix(".", function(context, left, that) {
    var m = identifier(context, true);

    if (typeof m === "string") {
      countMember(m);
    }

    that.left = left;
    that.right = m;

    if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") {
      warning("W001");
    }

    if (left && left.value === "arguments" && (m === "callee" || m === "caller")) {
      if (state.option.noarg)
        warning("W059", left, m);
      else if (state.isStrict())
        error("E008");
    } else if (!state.option.evil && left && left.value === "document" &&
        (m === "write" || m === "writeln")) {
      warning("W060", left);
    }

    if (!state.option.evil && (m === "eval" || m === "execScript")) {
      if (isGlobalEval(left, state)) {
        warning("W061");
      }
    }

    return that;
  }, 160, true);

  infix("(", function(context, left, that) {
    if (state.option.immed && left && !left.immed && left.id === "function") {
      warning("W062");
    }

    if (state.option.asi && checkPunctuators(state.tokens.prev, [")", "]"]) &&
      state.tokens.prev.line !== startLine(state.tokens.curr)) {
      warning("W014", state.tokens.curr, state.tokens.curr.id);
    }

    var n = 0;
    var p = [];

    if (left) {
      if (left.type === "(identifier)") {
        if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) {
          if ("Array Number String Boolean Date Object Error Symbol".indexOf(left.value) === -1) {
            if (left.value === "Math") {
              warning("W063", left);
            } else if (state.option.newcap) {
              warning("W064", left);
            }
          }
        }
      }
    }

    if (state.tokens.next.id !== ")") {
      for (;;) {
        spreadrest("spread");

        p[p.length] = expression(context, 10);
        n += 1;
        if (state.tokens.next.id !== ",") {
          break;
        }
        parseComma({ allowTrailing: true });

        if (state.tokens.next.id === ")") {
          if (!state.inES8()) {
            warning("W119", state.tokens.curr, "Trailing comma in arguments lists", "8");
          }

          break;
        }
      }
    }

    advance(")");

    if (typeof left === "object") {
      if (!state.inES5() && left.value === "parseInt" && n === 1) {
        warning("W065", state.tokens.curr);
      }
      if (!state.option.evil) {
        if (left.value === "eval" || left.value === "Function" ||
            left.value === "execScript") {
          warning("W061", left);

          // This conditional expression was initially implemented with a typo
          // which prevented the branch's execution in all cases. While
          // enabling the code will produce behavior that is consistent with
          // the other forms of code evaluation that follow, such a change is
          // also technically incompatable with prior versions of JSHint (due
          // to the fact that the behavior was never formally documented). This
          // branch should be enabled as part of a major release.
          //if (p[0] && p[0].id === "(string)") {
          //  addEvalCode(left, p[0]);
          //}
        } else if (p[0] && p[0].id === "(string)" &&
             (left.value === "setTimeout" ||
            left.value === "setInterval")) {
          warning("W066", left);
          addEvalCode(left, p[0]);

        // window.setTimeout/setInterval
        } else if (p[0] && p[0].id === "(string)" &&
             left.value === "." &&
             left.left.value === "window" &&
             (left.right === "setTimeout" ||
            left.right === "setInterval")) {
          warning("W066", left);
          addEvalCode(left, p[0]);
        }
      }
      if (!left.identifier && left.id !== "." && left.id !== "[" && left.id !== "=>" &&
          left.id !== "(" && left.id !== "&&" && left.id !== "||" && left.id !== "?" &&
          left.id !== "async" && !(state.inES6() && left["(name)"])) {
        warning("W067", that);
      }
    }

    that.left = left;
    return that;
  }, 155, true).exps = true;

  function peekThroughParens(parens) {
    var pn = state.tokens.next;
    var i = -1;
    var pn1;

    do {
      if (pn.value === "(") {
        parens += 1;
      } else if (pn.value === ")") {
        parens -= 1;
      }

      i += 1;
      pn1 = pn;
      pn = peek(i);
    } while (!(parens === 0 && pn1.value === ")") && pn.type !== "(end)");

    return pn;
  }

  prefix("(", function(context, rbp) {
    var ret, triggerFnExpr, first, last;
    var opening = state.tokens.curr;
    var preceeding = state.tokens.prev;
    var isNecessary = !state.option.singleGroups;
    var pn = peekThroughParens(1);

    if (state.tokens.next.id === "function") {
      triggerFnExpr = state.tokens.next.immed = true;
    }

    // If the balanced grouping operator is followed by a "fat arrow", the
    // current token marks the beginning of a "fat arrow" function and parsing
    // should proceed accordingly.
    if (pn.value === "=>") {
      pn.funct = doFunction(context, { type: "arrow", parsedOpening: true });
      return pn;
    }

    var exprs = [];

    if (state.tokens.next.id !== ")") {
      for (;;) {
        exprs.push(expression(context, 10));

        if (state.tokens.next.id !== ",") {
          break;
        }

        if (state.option.nocomma) {
          warning("W127");
        }

        parseComma();
      }
    }

    advance(")", this);
    if (state.option.immed && exprs[0] && exprs[0].id === "function") {
      if (state.tokens.next.id !== "(" &&
        state.tokens.next.id !== "." && state.tokens.next.id !== "[") {
        warning("W068", this);
      }
    }

    if (!exprs.length) {
      return;
    }
    if (exprs.length > 1) {
      ret = Object.create(state.syntax[","]);
      ret.exprs = exprs;

      first = exprs[0];
      last = exprs[exprs.length - 1];
    } else {
      ret = first = last = exprs[0];

      if (!isNecessary) {
        isNecessary =
          // Used to distinguish from an ExpressionStatement which may not
          // begin with the `{` and `function` tokens
          (opening.beginsStmt && (ret.id === "{" || triggerFnExpr)) ||
          // Used to signal that a function expression is being supplied to
          // some other operator.
          (triggerFnExpr &&
            // For parenthesis wrapping a function expression to be considered
            // necessary, the grouping operator should be the left-hand-side of
            // some other operator--either within the parenthesis or directly
            // following them.
            (!isEndOfExpr() || state.tokens.prev.id !== "}")) ||
          // Used to demarcate an arrow function as the left-hand side of some
          // operator.
          (ret.id === "=>" && !isEndOfExpr()) ||
          // Used as the return value of a single-statement arrow function
          (ret.id === "{" && preceeding.id === "=>") ||
          // Used to cover a unary expression as the left-hand side of the
          // exponentiation operator
          (beginsUnaryExpression(ret) && state.tokens.next.id === "**") ||
          // Used to delineate an integer number literal from a dereferencing
          // punctuator (otherwise interpreted as a decimal point)
          (ret.type === "(number)" &&
            checkPunctuator(pn, ".") && /^\d+$/.test(ret.value)) ||
          // Used to wrap object destructuring assignment
          (opening.beginsStmt && ret.id === "=" && ret.left.id === "{");
      }
    }

    if (ret) {
      // The operator may be necessary to override the default binding power of
      // neighboring operators (whenever there is an operator in use within the
      // first expression *or* the current group contains multiple expressions)
      if (!isNecessary && (isOperator(first) || ret.exprs)) {
        isNecessary =
          (rbp > first.lbp) ||
          (rbp > 0 && rbp === first.lbp) ||
          (!isEndOfExpr() && last.rbp < state.tokens.next.lbp);
      }

      if (!isNecessary) {
        warning("W126", opening);
      }

      ret.paren = true;
    }

    return ret;
  });

  application("=>");

  infix("[", function(context, left, that) {
    var e, s, canUseDot;

    if (state.option.asi && checkPunctuators(state.tokens.prev, [")", "]"]) &&
      state.tokens.prev.line !== startLine(state.tokens.curr)) {
      warning("W014", state.tokens.curr, state.tokens.curr.id);
    }

    e = expression(context & ~prodParams.noin, 10);

    if (e && e.type === "(string)") {
      if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) {
        if (isGlobalEval(left, state)) {
          warning("W061");
        }
      }

      countMember(e.value);
      if (!state.option.sub && reg.identifier.test(e.value)) {
        s = state.syntax[e.value];

        if (s) {
          canUseDot = !isReserved(context, s);
        } else {
          // This branch exists to preserve legacy behavior with version 2.9.5
          // and earlier. In those releases, `eval` and `arguments` were
          // incorrectly interpreted as reserved keywords, so Member
          // Expressions such as `object["eval"]` did not trigger warning W069.
          //
          // TODO: Remove in JSHint 3
          canUseDot = e.value !== "eval" && e.value !== "arguments";
        }

        if (canUseDot) {
          warning("W069", state.tokens.prev, e.value);
        }
      }
    }
    advance("]", that);

    if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") {
      warning("W001");
    }

    that.left = left;
    that.right = e;
    return that;
  }, 160, true);

  function comprehensiveArrayExpression(context) {
    var res = {};
    res.exps = true;
    state.funct["(comparray)"].stack();

    // Handle reversed for expressions, used in spidermonkey
    var reversed = false;
    if (state.tokens.next.value !== "for") {
      reversed = true;
      if (!state.inMoz()) {
        warning("W116", state.tokens.next, "for", state.tokens.next.value);
      }
      state.funct["(comparray)"].setState("use");
      res.right = expression(context, 10);
    }

    advance("for");
    if (state.tokens.next.value === "each") {
      advance("each");
      if (!state.inMoz()) {
        warning("W118", state.tokens.curr, "for each");
      }
    }
    advance("(");
    state.funct["(comparray)"].setState("define");
    res.left = expression(context, 130);
    if (_.includes(["in", "of"], state.tokens.next.value)) {
      advance();
    } else {
      error("E045", state.tokens.curr);
    }
    state.funct["(comparray)"].setState("generate");
    expression(context, 10);

    advance(")");
    if (state.tokens.next.value === "if") {
      advance("if");
      advance("(");
      state.funct["(comparray)"].setState("filter");
      expression(context, 10);
      advance(")");
    }

    if (!reversed) {
      state.funct["(comparray)"].setState("use");
      res.right = expression(context, 10);
    }

    advance("]");
    state.funct["(comparray)"].unstack();
    return res;
  }

  prefix("[", function(context) {
    var blocktype = lookupBlockType();
    if (blocktype.isCompArray) {
      if (!state.option.esnext && !state.inMoz()) {
        warning("W118", state.tokens.curr, "array comprehension");
      }
      return comprehensiveArrayExpression(context);
    } else if (blocktype.isDestAssign) {
      this.destructAssign = destructuringPattern(context, {
          openingParsed: true,
          assignment: true
        });
      return this;
    }
    var b = state.tokens.curr.line !== startLine(state.tokens.next);
    this.first = [];
    if (b) {
      indent += state.option.indent;
      if (state.tokens.next.from === indent + state.option.indent) {
        indent += state.option.indent;
      }
    }
    while (state.tokens.next.id !== "(end)") {
      while (state.tokens.next.id === ",") {
        if (!state.option.elision) {
          if (!state.inES5()) {
            // Maintain compat with old options --- ES5 mode without
            // elision=true will warn once per comma
            warning("W070");
          } else {
            warning("W128");
            do {
              advance(",");
            } while (state.tokens.next.id === ",");
            continue;
          }
        }
        advance(",");
      }

      if (state.tokens.next.id === "]") {
        break;
      }

      spreadrest("spread");

      this.first.push(expression(context, 10));
      if (state.tokens.next.id === ",") {
        parseComma({ allowTrailing: true });
        if (state.tokens.next.id === "]" && !state.inES5()) {
          warning("W070", state.tokens.curr);
          break;
        }
      } else {
        if (state.option.trailingcomma && state.inES5()) {
          warningAt("W140", state.tokens.curr.line, state.tokens.curr.character);
        }
        break;
      }
    }
    if (b) {
      indent -= state.option.indent;
    }
    advance("]", this);
    return this;
  });


  function isMethod() {
    return !!state.funct["(method)"];
  }

  function propertyName(context, preserveOrToken) {
    var id;
    var preserve = true;
    if (typeof preserveOrToken === "object") {
      id = preserveOrToken;
    } else {
      preserve = preserveOrToken;
      id = optionalidentifier(context, true, preserve);
    }

    if (!id) {
      if (state.tokens.next.id === "(string)") {
        id = state.tokens.next.value;
        if (!preserve) {
          advance();
        }
      } else if (state.tokens.next.id === "(number)") {
        id = state.tokens.next.value.toString();
        if (!preserve) {
          advance();
        }
      }
    } else if (typeof id === "object") {
      if (id.id === "(string)" || id.id === "(identifier)") id = id.value;
      else if (id.id === "(number)") id = id.value.toString();
    }

    if (id === "hasOwnProperty") {
      warning("W001");
    }

    return id;
  }

  /**
   * @param {Number} context The parsing context
   * @param {Object} [options]
   * @param {token} [options.loneArg] The argument to the function in cases
   *                                  where it was defined using the
   *                                  single-argument shorthand.
   * @param {bool} [options.parsedOpening] Whether the opening parenthesis has
   *                                       already been parsed.
   *
   * @returns {{ arity: number, params: Array.<string>, isSimple: boolean }}
   */
  function functionparams(context, options) {
    var next;
    var paramsIds = [];
    var ident;
    var tokens = [];
    var t;
    var pastDefault = false;
    var pastRest = false;
    var arity = 0;
    var loneArg = options && options.loneArg;
    var hasDestructuring = false;

    if (loneArg && loneArg.identifier === true) {
      state.funct["(scope)"].addParam(loneArg.value, loneArg);
      return { arity: 1, params: [ loneArg.value ], isSimple: true };
    }

    next = state.tokens.next;

    if (!options || !options.parsedOpening) {
      advance("(");
    }

    if (state.tokens.next.id === ")") {
      advance(")");
      return;
    }

    function addParam(addParamArgs) {
      state.funct["(scope)"].addParam.apply(state.funct["(scope)"], addParamArgs);
    }

    for (;;) {
      arity++;
      // are added to the param scope
      var currentParams = [];

      if (_.includes(["{", "["], state.tokens.next.id)) {
        hasDestructuring = true;
        tokens = destructuringPattern(context);
        for (t in tokens) {
          t = tokens[t];
          if (t.id) {
            paramsIds.push(t.id);
            currentParams.push([t.id, t.token]);
          }
        }
      } else {
        pastRest = spreadrest("rest");
        ident = identifier(context);

        if (ident) {
          paramsIds.push(ident);
          currentParams.push([ident, state.tokens.curr]);
        } else {
          // Skip invalid parameter.
          while (!checkPunctuators(state.tokens.next, [",", ")"])) advance();
        }
      }

      // It is valid to have a regular argument after a default argument
      // since undefined can be used for missing parameters. Still warn as it is
      // a possible code smell.
      if (pastDefault) {
        if (state.tokens.next.id !== "=") {
          error("W138", state.tokens.curr);
        }
      }
      if (state.tokens.next.id === "=") {
        if (!state.inES6()) {
          warning("W119", state.tokens.next, "default parameters", "6");
        }

        if (pastRest) {
          error("E062", state.tokens.next);
        }

        advance("=");
        pastDefault = true;
        expression(context, 10);
      }

      // now we have evaluated the default expression, add the variable to the param scope
      currentParams.forEach(addParam);
      if (state.tokens.next.id === ",") {
        if (pastRest) {
          warning("W131", state.tokens.next);
        }
        parseComma({ allowTrailing: true });
      }

      if (state.tokens.next.id === ")") {
        if (state.tokens.curr.id === "," && !state.inES8()) {
          warning("W119", state.tokens.curr, "Trailing comma in function parameters", "8");
        }

        advance(")", next);
        return {
          arity: arity,
          params: paramsIds,
          isSimple: !hasDestructuring && !pastRest && !pastDefault
        };
      }
    }
  }

  /**
   * Factory function for creating objects used to track statistics of function
   * literals.
   *
   * @param {string} name - the identifier name to associate with the function
   * @param {object} [token] - token responsible for creating the function
   *                           object
   * @param {object} [overwrites] - a collection of properties that should
   *                                override the corresponding default value of
   *                                the new "functor" object
   */
  function functor(name, token, overwrites) {
    var funct = {
      "(name)"      : name,
      "(breakage)"  : 0,
      "(loopage)"   : 0,
      // The strictness of the function body is tracked via a dedicated
      // property (as opposed to via the global `state` object) so that the
      // value can be referenced after the body has been fully parsed (i.e.
      // when validating the identifier used in function declarations and
      // function expressions).
      "(isStrict)"  : "unknown",

      "(global)"    : false,

      "(line)"      : null,
      "(character)" : null,
      "(metrics)"   : null,
      "(statement)" : null,
      "(context)"   : null,
      "(scope)"     : null,
      "(comparray)" : null,
      "(generator)" : null,
      "(arrow)"     : null,
      "(async)"     : null,
      "(params)"    : null
    };

    if (token) {
      _.extend(funct, {
        "(line)"     : token.line,
        "(character)": token.character,
        "(metrics)"  : createMetrics(token)
      });
    }

    _.extend(funct, overwrites);

    if (funct["(context)"]) {
      funct["(scope)"] = funct["(context)"]["(scope)"];
      funct["(comparray)"]  = funct["(context)"]["(comparray)"];
    }

    return funct;
  }

  /**
   * Determine if the parser has begun parsing executable code.
   *
   * @param {Token} funct - The current "functor" token
   *
   * @returns {boolean}
   */
  function hasParsedCode(funct) {
    return funct["(global)"] && !funct["(verb)"];
  }

  /**
   * This function is used as both a null-denotation method *and* a
   * left-denotation method, meaning the first parameter is overloaded.
   */
  function doTemplateLiteral(context, leftOrRbp) {
    // ASSERT: this.type === "(template)"
    // jshint validthis: true
    var ctx = this.context;
    var noSubst = this.noSubst;
    var depth = this.depth;
    var left = typeof leftOrRbp === "number" ? null : leftOrRbp;

    if (!noSubst) {
      while (!end()) {
        if (!state.tokens.next.template || state.tokens.next.depth > depth) {
          expression(context, 0); // should probably have different rbp?
        } else {
          // skip template start / middle
          advance();
        }
      }
    }

    return {
      id: "(template)",
      type: "(template)",
      tag: left
    };

    function end() {
      if (state.tokens.curr.template && state.tokens.curr.tail &&
          state.tokens.curr.context === ctx) return true;
      var complete = (state.tokens.next.template && state.tokens.next.tail &&
                      state.tokens.next.context === ctx);
      if (complete) advance();
      return complete || state.tokens.next.isUnclosed;
    }
  }

  /**
   * Parse a function literal.
   *
   * @param {Number} context The parsing context
   * @param {Object} [options]
   * @param {string} [options.name] The identifier belonging to the function (if
   *                                any)
   * @param {token} [options.statement] The statement that triggered creation
   *                                    of the current function.
   * @param {string} [options.type] If specified, either "generator" or "arrow"
   * @param {token} [options.loneArg] The argument to the function in cases
   *                                  where it was defined using the
   *                                  single-argument shorthand
   * @param {bool} [options.parsedOpening] Whether the opening parenthesis has
   *                                       already been parsed
   * @param {string} [options.classExprBinding] Define a function with this
   *                                            identifier in the new function's
   *                                            scope, mimicking the bahavior of
   *                                            class expression names within
   *                                            the body of member functions.
   */
  function doFunction(context, options) {
    var f, token, name, statement, classExprBinding, isGenerator, isArrow,
      isMethod, ignoreLoopFunc;
    var oldOption = state.option;
    var oldIgnored = state.ignored;
    var isAsync = context & prodParams.preAsync;

    if (options) {
      name = options.name;
      statement = options.statement;
      classExprBinding = options.classExprBinding;
      isGenerator = options.type === "generator";
      isArrow = options.type === "arrow";
      isMethod = options.isMethod;
      ignoreLoopFunc = options.ignoreLoopFunc;
    }

    context &= ~prodParams.noin;
    context &= ~prodParams.tryClause;

    if (isAsync) {
      context |= prodParams.async;
    } else {
      context &= ~prodParams.async;
    }
    context &= ~prodParams.preAsync;

    state.option = Object.create(state.option);
    state.ignored = Object.create(state.ignored);

    state.funct = functor(name || state.nameStack.infer(), state.tokens.next, {
      "(statement)": statement,
      "(context)":   state.funct,
      "(arrow)":     isArrow,
      "(method)":    isMethod,
      "(generator)": isGenerator,
      "(async)":     isAsync
    });

    f = state.funct;
    token = state.tokens.curr;

    functions.push(state.funct);

    // So that the function is available to itself and referencing itself is not
    // seen as a closure, add the function name to a new scope, but do not
    // test for unused (unused: false)
    // it is a new block scope so that params can override it, it can be block scoped
    // but declarations inside the function don't cause already declared error
    state.funct["(scope)"].stack("functionouter");
    var internallyAccessibleName = !isMethod && (name || classExprBinding);
    if (internallyAccessibleName) {
      state.funct["(scope)"].block.add(internallyAccessibleName,
        classExprBinding ? "class" : "function", state.tokens.curr, false);
    }

    if (!isArrow) {
      state.funct["(scope)"].funct.add("arguments", "var", token, false);
    }

    // create the param scope (params added in functionparams)
    state.funct["(scope)"].stack("functionparams");

    var paramsInfo = functionparams(context, options);

    if (paramsInfo) {
      state.funct["(params)"] = paramsInfo.params;
      state.funct["(hasSimpleParams)"] = paramsInfo.isSimple;
      state.funct["(metrics)"].arity = paramsInfo.arity;
      state.funct["(metrics)"].verifyMaxParametersPerFunction();
    } else {
      state.funct["(params)"] = [];
      state.funct["(metrics)"].arity = 0;
      state.funct["(hasSimpleParams)"] = true;
    }

    if (isArrow) {
      if (!state.inES6(true)) {
        warning("W119", state.tokens.curr, "arrow function syntax (=>)", "6");
      }

      if (!options.loneArg) {
        advance("=>");
      }
    }

    block(context, false, true, true, isArrow);

    if (!state.option.noyield && isGenerator &&
        state.funct["(generator)"] !== "yielded") {
      warning("W124", state.tokens.curr);
    }

    state.funct["(metrics)"].verifyMaxStatementsPerFunction();
    state.funct["(metrics)"].verifyMaxComplexityPerFunction();
    state.funct["(unusedOption)"] = state.option.unused;
    state.option = oldOption;
    state.ignored = oldIgnored;
    state.funct["(last)"] = state.tokens.curr.line;
    state.funct["(lastcharacter)"] = state.tokens.curr.character;

    // unstack the params scope
    state.funct["(scope)"].unstack(); // also does usage and label checks

    // unstack the function outer stack
    state.funct["(scope)"].unstack();

    state.funct = state.funct["(context)"];

    if (!ignoreLoopFunc && !state.option.loopfunc && state.funct["(loopage)"]) {
      // If the function we just parsed accesses any non-local variables
      // trigger a warning. Otherwise, the function is safe even within
      // a loop.
      if (f["(outerMutables)"]) {
        warning("W083", token, f["(outerMutables)"].join(", "));
      }
    }

    return f;
  }

  function createMetrics(functionStartToken) {
    return {
      statementCount: 0,
      nestedBlockDepth: -1,
      ComplexityCount: 1,
      arity: 0,

      verifyMaxStatementsPerFunction: function() {
        if (state.option.maxstatements &&
          this.statementCount > state.option.maxstatements) {
          warning("W071", functionStartToken, this.statementCount);
        }
      },

      verifyMaxParametersPerFunction: function() {
        if (_.isNumber(state.option.maxparams) &&
          this.arity > state.option.maxparams) {
          warning("W072", functionStartToken, this.arity);
        }
      },

      verifyMaxNestedBlockDepthPerFunction: function() {
        if (state.option.maxdepth &&
          this.nestedBlockDepth > 0 &&
          this.nestedBlockDepth === state.option.maxdepth + 1) {
          warning("W073", null, this.nestedBlockDepth);
        }
      },

      verifyMaxComplexityPerFunction: function() {
        var max = state.option.maxcomplexity;
        var cc = this.ComplexityCount;
        if (max && cc > max) {
          warning("W074", functionStartToken, cc);
        }
      }
    };
  }

  function increaseComplexityCount() {
    state.funct["(metrics)"].ComplexityCount += 1;
  }

  // Parse assignments that were found instead of conditionals.
  // For example: if (a = 1) { ... }

  function checkCondAssignment(expr) {
    var id, paren;
    if (expr) {
      id = expr.id;
      paren = expr.paren;
      if (id === "," && (expr = expr.exprs[expr.exprs.length - 1])) {
        id = expr.id;
        paren = paren || expr.paren;
      }
    }
    switch (id) {
    case "=":
    case "+=":
    case "-=":
    case "*=":
    case "%=":
    case "&=":
    case "|=":
    case "^=":
    case "/=":
      if (!paren && !state.option.boss) {
        warning("W084");
      }
    }
  }

  /**
   * Validate the properties defined within an object literal or class body.
   * See the `saveAccessor` and `saveProperty` functions for more detail.
   *
   * @param {object} props - Collection of objects describing the properties
   *                         encountered
   */
  function checkProperties(props) {
    // Check for lonely setters if in the ES5 mode.
    if (state.inES5()) {
      for (var name in props) {
        if (props[name] && props[name].setterToken && !props[name].getterToken &&
          !props[name].static) {
          warning("W078", props[name].setterToken);
        }
      }
    }
  }

  function metaProperty(context, name, c) {
    if (checkPunctuator(state.tokens.next, ".")) {
      var left = state.tokens.curr.id;
      advance(".");
      var id = identifier(context);
      state.tokens.curr.isMetaProperty = true;
      if (name !== id) {
        error("E057", state.tokens.prev, left, id);
      } else {
        c();
      }
      return state.tokens.curr;
    }
  }

//object literals
  (function(x) {
    x.nud = function(context) {
      var b, f, i, params, t, isGeneratorMethod = false, nextVal;
      var props = Object.create(null); // All properties, including accessors
      var isAsyncMethod = false;

      b = state.tokens.curr.line !== startLine(state.tokens.next);
      if (b) {
        indent += state.option.indent;
        if (state.tokens.next.from === indent + state.option.indent) {
          indent += state.option.indent;
        }
      }

      var blocktype = lookupBlockType();
      if (blocktype.isDestAssign) {
        this.destructAssign = destructuringPattern(context, {
            openingParsed: true,
            assignment: true
          });
        return this;
      }
      state.inObjectBody = true;
      for (;;) {
        if (state.tokens.next.id === "}") {
          break;
        }

        nextVal = state.tokens.next.value;
        if (state.tokens.next.identifier &&
            (peekIgnoreEOL().id === "," || peekIgnoreEOL().id === "}")) {
          if (!state.inES6()) {
            warning("W104", state.tokens.next, "object short notation", "6");
          }
          i = propertyName(context, true);
          saveProperty(props, i, state.tokens.next);

          expression(context, 10);

        } else if (peek().id !== ":" && (nextVal === "get" || nextVal === "set")) {
          advance(nextVal);

          if (!state.inES5()) {
            error("E034");
          }

          if (state.tokens.next.id === "[") {
            i = computedPropertyName();
          } else {
            i = propertyName(context);

            // ES6 allows for get() {...} and set() {...} method
            // definition shorthand syntax, so we don't produce an error
            // if linting ECMAScript 6 code.
            if (!i && !state.inES6()) {
              error("E035");
            }
          }

          // We don't want to save this getter unless it's an actual getter
          // and not an ES6 concise method
          if (i) {
            saveAccessor(nextVal, props, i, state.tokens.curr);
          }

          t = state.tokens.next;
          f = doFunction(context, { isMethod: true });
          params = f["(params)"];

          // Don't warn about getter/setter pairs if this is an ES6 concise method
          if (nextVal === "get" && i && params.length) {
            warning("W076", t, params[0], i);
          } else if (nextVal === "set" && i && f["(metrics)"].arity !== 1) {
            warning("W077", t, i);
          }

        } else if (spreadrest("spread")) {
          if (!state.inES9()) {
            warning("W119", state.tokens.next, "object spread property", "9");
          }

          expression(context, 10);
        } else {
          if (state.tokens.next.id === "async" && !checkPunctuators(peek(), ["(", ":"])) {
            if (!state.inES8()) {
              warning("W119", state.tokens.next, "async functions", "8");
            }

            isAsyncMethod = true;
            advance();

            nolinebreak(state.tokens.curr);
          } else {
            isAsyncMethod = false;
          }

          if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") {
            if (isAsyncMethod && !state.inES9()) {
              warning("W119", state.tokens.next, "async generators", "9");
            } else if (!state.inES6()) {
              warning("W104", state.tokens.next, "generator functions", "6");
            }

            advance("*");
            isGeneratorMethod = true;
          } else {
            isGeneratorMethod = false;
          }

          if (state.tokens.next.id === "[") {
            i = computedPropertyName(context);
            state.nameStack.set(i);
          } else {
            state.nameStack.set(state.tokens.next);
            i = propertyName(context);
            saveProperty(props, i, state.tokens.next);

            if (typeof i !== "string") {
              break;
            }
          }

          if (state.tokens.next.value === "(") {
            if (!state.inES6()) {
              warning("W104", state.tokens.curr, "concise methods", "6");
            }

            doFunction(isAsyncMethod ? context | prodParams.preAsync : context, {
              isMethod: true,
              type: isGeneratorMethod ? "generator" : null
            });
          } else {
            advance(":");
            expression(context, 10);
          }
        }

        countMember(i);

        if (state.tokens.next.id === ",") {
          parseComma({ allowTrailing: true, property: true });
          if (state.tokens.next.id === ",") {
            warning("W070", state.tokens.curr);
          } else if (state.tokens.next.id === "}" && !state.inES5()) {
            warning("W070", state.tokens.curr);
          }
        } else {
          if (state.option.trailingcomma && state.inES5()) {
            warningAt("W140", state.tokens.curr.line, state.tokens.curr.character);
          }
          break;
        }
      }
      if (b) {
        indent -= state.option.indent;
      }
      advance("}", this);

      checkProperties(props);
      state.inObjectBody = false;

      return this;
    };
    x.fud = function() {
      error("E036", state.tokens.curr);
    };
  }(delim("{")));

  function destructuringPattern(context, options) {
    var isAssignment = options && options.assignment;

    context &= ~prodParams.noin;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr,
        isAssignment ? "destructuring assignment" : "destructuring binding", "6");
    }

    return destructuringPatternRecursive(context, options);
  }

  function destructuringPatternRecursive(context, options) {
    var ids, idx;
    var identifiers = [];
    var openingParsed = options && options.openingParsed;
    var isAssignment = options && options.assignment;
    var recursiveOptions = isAssignment ? { assignment: isAssignment } : null;
    var firstToken = openingParsed ? state.tokens.curr : state.tokens.next;

    var nextInnerDE = function() {
      var ident;
      if (checkPunctuators(state.tokens.next, ["[", "{"])) {
        ids = destructuringPatternRecursive(context, recursiveOptions);
        for (idx = 0; idx < ids.length; idx++) {
          identifiers.push({ id: ids[idx].id, token: ids[idx].token });
        }
      } else if (checkPunctuator(state.tokens.next, ",")) {
        identifiers.push({ id: null, token: state.tokens.curr });
      } else if (checkPunctuator(state.tokens.next, "(")) {
        advance("(");
        nextInnerDE();
        advance(")");
      } else {
        if (isAssignment) {
          var assignTarget = expression(context, 20);
          if (assignTarget) {
            checkLeftSideAssign(context, assignTarget);

            // if the target was a simple identifier, add it to the list to return
            if (assignTarget.identifier) {
              ident = assignTarget.value;
            }
          }
        } else {
          ident = identifier(context);
        }
        if (ident) {
          identifiers.push({ id: ident, token: state.tokens.curr });
        }
      }
    };

    var assignmentProperty = function(context) {
      var id, expr;

      if (checkPunctuator(state.tokens.next, "[")) {
        advance("[");
        expression(context, 10);
        advance("]");
        advance(":");
        nextInnerDE();
      } else if (state.tokens.next.id === "(string)" ||
                 state.tokens.next.id === "(number)") {
        advance();
        advance(":");
        nextInnerDE();
      } else {
        // this id will either be the property name or the property name and the assigning identifier
        var isRest = spreadrest("rest");

        if (isRest) {
          if (!state.inES9()) {
            warning("W119", state.tokens.next, "object rest property", "9");
          }

          // Due to visual symmetry with the array rest property (and the early
          // design of the language feature), developers may mistakenly assume
          // any expression is valid in this position.  Parse an expression and
          // issue an error in order to recover more gracefully from this
          // condition.
          expr = expression(context, 10);

          if (expr.type !== "(identifier)") {
            error("E030", expr, expr.value);
          }
        } else {
          id = identifier(context);
        }

        if (!isRest && checkPunctuator(state.tokens.next, ":")) {
          advance(":");
          nextInnerDE();
        } else if (id) {
          // in this case we are assigning (not declaring), so check assignment
          if (isAssignment) {
            checkLeftSideAssign(context, state.tokens.curr);
          }
          identifiers.push({ id: id, token: state.tokens.curr });
        }

        if (isRest && checkPunctuator(state.tokens.next, ",")) {
          warning("W130", state.tokens.next);
        }
      }
    };

    var id, value;
    if (checkPunctuator(firstToken, "[")) {
      if (!openingParsed) {
        advance("[");
      }
      if (checkPunctuator(state.tokens.next, "]")) {
        warning("W137", state.tokens.curr);
      }
      var element_after_rest = false;
      while (!checkPunctuator(state.tokens.next, "]")) {
        var isRest = spreadrest("rest");

        nextInnerDE();

        if (isRest && !element_after_rest &&
            checkPunctuator(state.tokens.next, ",")) {
          warning("W130", state.tokens.next);
          element_after_rest = true;
        }
        if (!isRest && checkPunctuator(state.tokens.next, "=")) {
          if (checkPunctuator(state.tokens.prev, "...")) {
            advance("]");
          } else {
            advance("=");
          }
          id = state.tokens.prev;
          value = expression(context, 10);
          if (value && value.identifier && value.value === "undefined") {
            warning("W080", id, id.value);
          }
        }
        if (!checkPunctuator(state.tokens.next, "]")) {
          advance(",");
        }
      }
      advance("]");
    } else if (checkPunctuator(firstToken, "{")) {

      if (!openingParsed) {
        advance("{");
      }
      if (checkPunctuator(state.tokens.next, "}")) {
        warning("W137", state.tokens.curr);
      }
      while (!checkPunctuator(state.tokens.next, "}")) {
        assignmentProperty(context);
        if (checkPunctuator(state.tokens.next, "=")) {
          advance("=");
          id = state.tokens.prev;
          value = expression(context, 10);
          if (value && value.identifier && value.value === "undefined") {
            warning("W080", id, id.value);
          }
        }
        if (!checkPunctuator(state.tokens.next, "}")) {
          advance(",");
          if (checkPunctuator(state.tokens.next, "}")) {
            // Trailing comma
            // ObjectBindingPattern: { BindingPropertyList , }
            break;
          }
        }
      }
      advance("}");
    }
    return identifiers;
  }

  function destructuringPatternMatch(tokens, value) {
    var first = value.first;

    if (!first)
      return;

    _.zip(tokens, Array.isArray(first) ? first : [ first ]).forEach(function(val) {
      var token = val[0];
      var value = val[1];

      if (token && value)
        token.first = value;
      else if (token && token.first && !value)
        warning("W080", token.first, token.first.value);
    });
  }

  function blockVariableStatement(type, statement, context) {
    // used for both let and const statements

    var noin = context & prodParams.noin;
    var inexport = context & prodParams.export;
    var isLet = type === "let";
    var isConst = type === "const";
    var tokens, lone, value, letblock;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, type, "6");
    }

    if (isLet && isMozillaLet()) {
      advance("(");
      state.funct["(scope)"].stack();
      letblock = true;
      statement.declaration = false;
    }

    statement.first = [];
    for (;;) {
      var names = [];
      if (_.includes(["{", "["], state.tokens.next.value)) {
        tokens = destructuringPattern(context);
        lone = false;
      } else {
        tokens = [ { id: identifier(context), token: state.tokens.curr } ];
        lone = true;
      }

      // A `const` declaration without an initializer is permissible within the
      // head of for-in and for-of statements. If this binding list is being
      // parsed as part of a `for` statement of any kind, allow the initializer
      // to be omitted. Although this may erroneously allow such forms from
      // "C-style" `for` statements (i.e. `for (const x;;) {}`, the `for`
      // statement logic includes dedicated logic to issue the error for such
      // cases.
      if (!noin && isConst && state.tokens.next.id !== "=") {
        warning("E012", state.tokens.curr, state.tokens.curr.value);
      }

      for (var t in tokens) {
        if (tokens.hasOwnProperty(t)) {
          t = tokens[t];

          // It is a Syntax Error if the BoundNames of BindingList contains
          // "let".
          if (t.id === "let") {
            warning("W024", t.token, t.id);
          }

          if (state.funct["(scope)"].block.isGlobal()) {
            if (predefined[t.id] === false) {
              warning("W079", t.token, t.id);
            }
          }
          if (t.id) {
            state.funct["(scope)"].addlabel(t.id, {
              type: type,
              token: t.token });
            names.push(t.token);
          }
        }
      }

      if (state.tokens.next.id === "=") {
        statement.hasInitializer = true;

        advance("=");
        if (!noin && peek(0).id === "=" && state.tokens.next.identifier) {
          warning("W120", state.tokens.next, state.tokens.next.value);
        }
        var id = state.tokens.prev;
        value = expression(context, 10);
        if (value && value.identifier && value.value === "undefined") {
          warning("W080", id, id.value);
        }
        if (!lone) {
          destructuringPatternMatch(names, value);
        }
      }

      // Bindings are not immediately initialized in for-in and for-of
      // statements. As with `const` initializers (described above), the `for`
      // statement parsing logic includes
      if (state.tokens.next.value !== "in" && state.tokens.next.value !== "of") {
        for (t in tokens) {
          if (tokens.hasOwnProperty(t)) {
            t = tokens[t];
            state.funct["(scope)"].initialize(t.id);

            if (lone && inexport) {
              state.funct["(scope)"].setExported(t.token.value, t.token);
            }
          }
        }
      }

      statement.first = statement.first.concat(names);

      if (state.tokens.next.id !== ",") {
        break;
      }

      statement.hasComma = true;
      parseComma();
    }
    if (letblock) {
      advance(")");
      block(context, true, true);
      statement.block = true;
      state.funct["(scope)"].unstack();
    }

    return statement;
  }

  var conststatement = stmt("const", function(context) {
    return blockVariableStatement("const", this, context);
  });
  conststatement.exps = true;
  conststatement.declaration = true;


  /**
   * Determine if the current `let` token designates the beginning of a "let
   * block" or "let expression" as implemented in the Mozilla SpiderMonkey
   * engine.
   *
   * This function will only return `true` if Mozilla extensions have been
   * enabled. It would be preferable to detect the language feature regardless
   * of the parser's state because this would allow JSHint to instruct users to
   * enable the `moz` option where necessary. This is not possible because the
   * language extension is not compatible with standard JavaScript. For
   * example, the following program code may describe a "let block" or a
   * function invocation:
   *
   *     let(x)
   *     {
   *       typeof x;
   *     }
   *
   * @returns {boolean}
   */
  function isMozillaLet() {
    return state.tokens.next.id === "(" && state.inMoz();
  }
  var letstatement = stmt("let", function(context) {
    return blockVariableStatement("let", this, context);
  });
  letstatement.nud = function(context, rbp) {
    if (isMozillaLet()) {
      // create a new block scope we use only for the current expression
      state.funct["(scope)"].stack();
      advance("(");
      state.tokens.prev.fud(context);
      advance(")");
      expression(context, rbp);
      state.funct["(scope)"].unstack();
    } else {
      this.exps = false;
      return state.syntax["(identifier)"].nud.apply(this, arguments);
    }
  };
  letstatement.meta = { es5: true, isFutureReservedWord: false, strictOnly: true };
  letstatement.exps = true;
  letstatement.declaration = true;
  letstatement.useFud = function(context) {
    var next = state.tokens.next;
    var nextIsBindingName;

    if (this.line !== next.line && !state.inES6()) {
      return false;
    }

    // JSHint generally interprets `let` as a reserved word even though it is
    // not considered as such by the ECMAScript specification because doing so
    // simplifies parsing logic. It is special-cased here so that code such as
    //
    //     let
    //     let
    //
    // is correctly interpreted as an invalid LexicalBinding. (Without this
    // consideration, the code above would be parsed as two
    // IdentifierReferences.)
    nextIsBindingName = next.identifier && (!isReserved(context, next) ||
      next.id === "let");

    return nextIsBindingName || checkPunctuators(next, ["{", "["]) ||
      isMozillaLet();
  };

  var varstatement = stmt("var", function(context) {
    var noin = context & prodParams.noin;
    var inexport = context & prodParams.export;
    var tokens, lone, value, id;

    this.first = [];
    for (;;) {
      var names = [];
      if (_.includes(["{", "["], state.tokens.next.value)) {
        tokens = destructuringPattern(context);
        lone = false;
      } else {
        tokens = [];
        id = identifier(context);

        if (id) {
          tokens.push({ id: id, token: state.tokens.curr });
        }

        lone = true;
      }

      if (state.option.varstmt) {
        warning("W132", this);
      }


      for (var t in tokens) {
        if (tokens.hasOwnProperty(t)) {
          t = tokens[t];
          if (state.funct["(global)"] && !state.impliedClosure()) {
            if (predefined[t.id] === false) {
              warning("W079", t.token, t.id);
            } else if (state.option.futurehostile === false) {
              if ((!state.inES5() && vars.ecmaIdentifiers[5][t.id] === false) ||
                (!state.inES6() && vars.ecmaIdentifiers[6][t.id] === false)) {
                warning("W129", t.token, t.id);
              }
            }
          }
          if (t.id) {
            state.funct["(scope)"].addlabel(t.id, {
              type: "var",
              token: t.token });

            if (lone && inexport) {
              state.funct["(scope)"].setExported(t.id, t.token);
            }
            names.push(t.token);
          }
        }
      }

      if (state.tokens.next.id === "=") {
        this.hasInitializer = true;

        state.nameStack.set(state.tokens.curr);

        advance("=");
        if (peek(0).id === "=" && state.tokens.next.identifier) {
          if (!noin &&
              !state.funct["(params)"] ||
              state.funct["(params)"].indexOf(state.tokens.next.value) === -1) {
            warning("W120", state.tokens.next, state.tokens.next.value);
          }
        }
        id = state.tokens.prev;
        value = expression(context, 10);
        if (value && !state.funct["(loopage)"] && value.identifier &&
          value.value === "undefined") {
          warning("W080", id, id.value);
        }
        if (!lone) {
          destructuringPatternMatch(names, value);
        }
      }

      this.first = this.first.concat(names);

      if (state.tokens.next.id !== ",") {
        break;
      }
      this.hasComma = true;
      parseComma();
    }

    return this;
  });
  varstatement.exps = true;

  blockstmt("function", function(context) {
    var inexport = context & prodParams.export;
    var generator = false;
    var isAsync = context & prodParams.preAsync;
    var labelType = "";

    if (isAsync) {
      labelType = "async ";
    }

    if (state.tokens.next.value === "*") {
      if (isAsync && !state.inES9()) {
        warning("W119", state.tokens.prev, "async generators", "9");
      } else if (!isAsync && !state.inES6(true)) {
        warning("W119", state.tokens.next, "function*", "6");
      }

      advance("*");
      labelType += "generator ";
      generator = true;
    }

    labelType += "function";

    if (inblock) {
      warning("W082", state.tokens.curr);
    }
    var nameToken = optionalidentifier(context) ? state.tokens.curr : null;

    if (!nameToken) {
      if (!inexport) {
        warning("W025");
      }
    } else {
      state.funct["(scope)"].addlabel(nameToken.value, {
        type: labelType,
        token: state.tokens.curr,
        initialized: true });

      if (inexport) {
        state.funct["(scope)"].setExported(nameToken.value, state.tokens.prev);
      }
    }

    var f = doFunction(context, {
      name: nameToken && nameToken.value,
      statement: this,
      type: generator ? "generator" : null,
      ignoreLoopFunc: inblock // a declaration may already have warned
    });

    // If the function declaration is strict because the surrounding code is
    // strict, the invalid name will trigger E008 when the scope manager
    // attempts to create a binding in the strict environment record. An error
    // should only be signaled here when the function itself enables strict
    // mode (the scope manager will not report an error because a declaration
    // does not introduce a binding into the function's environment record).
    var enablesStrictMode = f["(isStrict)"] && !state.isStrict();
    if (nameToken && (f["(name)"] === "arguments" || f["(name)"] === "eval") &&
      enablesStrictMode) {
      error("E008", nameToken);
    }

    if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) {
      error("E039");
    }
    return this;
  }).declaration = true;

  prefix("function", function(context) {
    var generator = false;
    var isAsync = context & prodParams.preAsync;

    if (state.tokens.next.value === "*") {
      if (isAsync && !state.inES9()) {
        warning("W119", state.tokens.prev, "async generators", "9");
      } else if (!isAsync && !state.inES6(true)) {
        warning("W119", state.tokens.curr, "function*", "6");
      }

      advance("*");
      generator = true;
    }

    // This context modification restricts the use of `await` as the optional
    // BindingIdentifier in async function expressions.
    var nameToken = optionalidentifier(isAsync ? context | prodParams.async : context) ?
      state.tokens.curr : null;

    var f = doFunction(context, {
      name: nameToken && nameToken.value,
      type: generator ? "generator" : null
    });

    if (nameToken && (f["(name)"] === "arguments" || f["(name)"] === "eval") &&
      f["(isStrict)"]) {
      error("E008", nameToken);
    }

    return this;
  });

  blockstmt("if", function(context) {
    var t = state.tokens.next;
    increaseComplexityCount();
    state.condition = true;
    advance("(");
    var expr = expression(context, 0);

    if (!expr) {
      quit("E041", this);
    }

    checkCondAssignment(expr);

    // When the if is within a for-in loop, check if the condition
    // starts with a negation operator
    var forinifcheck = null;
    if (state.option.forin && state.forinifcheckneeded) {
      state.forinifcheckneeded = false; // We only need to analyze the first if inside the loop
      forinifcheck = state.forinifchecks[state.forinifchecks.length - 1];
      if (expr.type === "(punctuator)" && expr.value === "!") {
        forinifcheck.type = "(negative)";
      } else {
        forinifcheck.type = "(positive)";
      }
    }

    advance(")", t);
    state.condition = false;
    var s = block(context, true, true);

    // When the if is within a for-in loop and the condition has a negative form,
    // check if the body contains nothing but a continue statement
    if (forinifcheck && forinifcheck.type === "(negative)") {
      if (s && s[0] && s[0].type === "(identifier)" && s[0].value === "continue") {
        forinifcheck.type = "(negative-with-continue)";
      }
    }

    if (state.tokens.next.id === "else") {
      advance("else");
      if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") {
        statement(context);
      } else {
        block(context, true, true);
      }
    }
    return this;
  });

  blockstmt("try", function(context) {
    var b;

    function doCatch() {
      advance("catch");
      advance("(");

      state.funct["(scope)"].stack("catchparams");

      if (checkPunctuators(state.tokens.next, ["[", "{"])) {
        var tokens = destructuringPattern(context);
        _.each(tokens, function(token) {
          if (token.id) {
            state.funct["(scope)"].addParam(token.id, token, "exception");
          }
        });
      } else if (state.tokens.next.type !== "(identifier)") {
        warning("E030", state.tokens.next, state.tokens.next.value);
      } else {
        // only advance if an identifier is present. This allows JSHint to
        // recover from the case where no value is specified.
        state.funct["(scope)"].addParam(identifier(context), state.tokens.curr, "exception");
      }

      if (state.tokens.next.value === "if") {
        if (!state.inMoz()) {
          warning("W118", state.tokens.curr, "catch filter");
        }
        advance("if");
        expression(context, 0);
      }

      advance(")");

      block(context, false);
      state.funct["(scope)"].unstack();
    }

    block(context | prodParams.tryClause, true);

    while (state.tokens.next.id === "catch") {
      increaseComplexityCount();
      if (b && (!state.inMoz())) {
        warning("W118", state.tokens.next, "multiple catch blocks");
      }
      doCatch();
      b = true;
    }

    if (state.tokens.next.id === "finally") {
      advance("finally");
      block(context, true);
      return;
    }

    if (!b) {
      error("E021", state.tokens.next, "catch", state.tokens.next.value);
    }

    return this;
  });

  blockstmt("while", function(context) {
    var t = state.tokens.next;
    state.funct["(breakage)"] += 1;
    state.funct["(loopage)"] += 1;
    increaseComplexityCount();
    advance("(");
    checkCondAssignment(expression(context, 0));
    advance(")", t);
    block(context, true, true);
    state.funct["(breakage)"] -= 1;
    state.funct["(loopage)"] -= 1;
    return this;
  }).labelled = true;

  blockstmt("with", function(context) {
    var t = state.tokens.next;
    if (state.isStrict()) {
      error("E010", state.tokens.curr);
    } else if (!state.option.withstmt) {
      warning("W085", state.tokens.curr);
    }

    advance("(");
    expression(context, 0);
    advance(")", t);
    block(context, true, true);

    return this;
  });

  blockstmt("switch", function(context) {
    var t = state.tokens.next;
    var g = false;
    var noindent = false;

    state.funct["(breakage)"] += 1;
    advance("(");
    checkCondAssignment(expression(context, 0));
    advance(")", t);
    t = state.tokens.next;
    advance("{");
    state.funct["(scope)"].stack();

    if (state.tokens.next.from === indent)
      noindent = true;

    if (!noindent)
      indent += state.option.indent;

    this.cases = [];

    for (;;) {
      switch (state.tokens.next.id) {
      case "case":
        switch (state.funct["(verb)"]) {
        case "yield":
        case "break":
        case "case":
        case "continue":
        case "return":
        case "switch":
        case "throw":
          break;
        case "default":
          if (state.option.leanswitch) {
            warning("W145", state.tokens.next);
          }

          break;
        default:
          // You can tell JSHint that you don't use break intentionally by
          // adding a comment /* falls through */ on a line just before
          // the next `case`.
          if (!state.tokens.curr.caseFallsThrough) {
            warning("W086", state.tokens.curr, "case");
          }
        }

        advance("case");
        this.cases.push(expression(context, 0));
        increaseComplexityCount();
        g = true;
        advance(":");
        state.funct["(verb)"] = "case";
        break;
      case "default":
        switch (state.funct["(verb)"]) {
        case "yield":
        case "break":
        case "continue":
        case "return":
        case "throw":
          break;
        case "case":
          if (state.option.leanswitch) {
            warning("W145", state.tokens.curr);
          }

          break;
        default:
          // Do not display a warning if 'default' is the first statement or if
          // there is a special /* falls through */ comment.
          if (this.cases.length) {
            if (!state.tokens.curr.caseFallsThrough) {
              warning("W086", state.tokens.curr, "default");
            }
          }
        }

        advance("default");
        g = true;
        advance(":");
        state.funct["(verb)"] = "default";
        break;
      case "}":
        if (!noindent)
          indent -= state.option.indent;

        advance("}", t);
        state.funct["(scope)"].unstack();
        state.funct["(breakage)"] -= 1;
        state.funct["(verb)"] = undefined;
        return;
      case "(end)":
        error("E023", state.tokens.next, "}");
        return;
      default:
        indent += state.option.indent;
        if (g) {
          switch (state.tokens.curr.id) {
          case ",":
            error("E040");
            return;
          case ":":
            g = false;
            statements(context);
            break;
          default:
            error("E025", state.tokens.curr);
            return;
          }
        } else {
          if (state.tokens.curr.id === ":") {
            advance(":");
            error("E024", state.tokens.curr, ":");
            statements(context);
          } else {
            error("E021", state.tokens.next, "case", state.tokens.next.value);
            return;
          }
        }
        indent -= state.option.indent;
      }
    }
  }).labelled = true;

  stmt("debugger", function() {
    if (!state.option.debug) {
      warning("W087", this);
    }
    return this;
  }).exps = true;

  (function() {
    var x = stmt("do", function(context) {
      state.funct["(breakage)"] += 1;
      state.funct["(loopage)"] += 1;
      increaseComplexityCount();

      this.first = block(context, true, true);
      advance("while");
      var t = state.tokens.next;
      advance("(");
      checkCondAssignment(expression(context, 0));
      advance(")", t);
      state.funct["(breakage)"] -= 1;
      state.funct["(loopage)"] -= 1;
      return this;
    });
    x.labelled = true;
    x.exps = true;
  }());

  blockstmt("for", function(context) {
    var s, t = state.tokens.next;
    var letscope = false;
    var isAsync = false;
    var foreachtok = null;

    if (t.value === "each") {
      foreachtok = t;
      advance("each");
      if (!state.inMoz()) {
        warning("W118", state.tokens.curr, "for each");
      }
    }

    if (state.tokens.next.identifier && state.tokens.next.value === "await") {
      advance("await");
      isAsync = true;

      if (!(context & prodParams.async)) {
        error("E024", state.tokens.curr, "await");
      } else if (!state.inES9()) {
        warning("W119", state.tokens.curr, "asynchronous iteration", "9");
      }
    }

    increaseComplexityCount();
    advance("(");

    // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)?
    var nextop; // contains the token of the "in" or "of" operator
    var comma; // First comma punctuator at level 0
    var initializer; // First initializer at level 0
    var bindingPower;
    var targets;
    var target;
    var decl;
    var afterNext = peek();

    var headContext = context | prodParams.noin;

    if (state.tokens.next.id === "var") {
      advance("var");
      decl = state.tokens.curr.fud(headContext);
      comma = decl.hasComma ? decl : null;
      initializer = decl.hasInitializer ? decl : null;
    } else if (state.tokens.next.id === "const" ||
      // The "let" keyword only signals a lexical binding if it is followed by
      // an identifier, `{`, or `[`. Otherwise, it should be parsed as an
      // IdentifierReference (i.e. in a subsquent branch).
      (state.tokens.next.id === "let" &&
        ((afterNext.identifier && afterNext.id !== "in") ||
         checkPunctuators(afterNext, ["{", "["])))) {
      advance(state.tokens.next.id);
      // create a new block scope
      letscope = true;
      state.funct["(scope)"].stack();
      decl = state.tokens.curr.fud(headContext);
      comma = decl.hasComma ? decl : null;
      initializer = decl.hasInitializer ? decl : null;
    } else if (!checkPunctuator(state.tokens.next, ";")) {
      targets = [];

      while (state.tokens.next.value !== "in" &&
        state.tokens.next.value !== "of" &&
        !checkPunctuator(state.tokens.next, ";")) {

        if (checkPunctuators(state.tokens.next, ["{", "["])) {
          destructuringPattern(headContext, { assignment: true })
            .forEach(function(elem) {
              this.push(elem.token);
            }, targets);
          if (checkPunctuator(state.tokens.next, "=")) {
            advance("=");
            initializer = state.tokens.curr;
            expression(headContext, 10);
          }
        } else {
          target = expression(headContext, 10);

          if (target) {
            if (target.type === "(identifier)") {
              targets.push(target);
            } else if (checkPunctuator(target, "=")) {
              initializer = target;
              targets.push(target);
            }
          }
        }

        if (checkPunctuator(state.tokens.next, ",")) {
          advance(",");

          if (!comma) {
            comma = state.tokens.curr;
          }
        }
      }

      //checkLeftSideAssign(target, nextop);

      // In the event of a syntax error, do not issue warnings regarding the
      // implicit creation of bindings.
      if (!initializer && !comma) {
        targets.forEach(function(token) {
          if (!state.funct["(scope)"].has(token.value)) {
            warning("W088", token, token.value);
          }
        });
      }
    }

    nextop = state.tokens.next;

    if (isAsync && nextop.value !== "of") {
      error("E066", nextop);
    }

    // if we're in a for (… in|of …) statement
    if (_.includes(["in", "of"], nextop.value)) {
      if (nextop.value === "of") {
        bindingPower = 20;

        if (!state.inES6()) {
          warning("W104", nextop, "for of", "6");
        }
      } else {
        bindingPower = 0;
      }
      if (comma) {
        error("W133", comma, nextop.value, "more than one ForBinding");
      }
      if (initializer) {
        error("W133", initializer, nextop.value, "initializer is forbidden");
      }
      if (target && !comma && !initializer) {
        checkLeftSideAssign(context, target, nextop);
      }

      advance(nextop.value);

      // The binding power is variable because for-in statements accept any
      // Expression in this position, while for-of statements are limited to
      // AssignmentExpressions. For example:
      //
      //     for ( LeftHandSideExpression in Expression ) Statement
      //     for ( LeftHandSideExpression of AssignmentExpression ) Statement
      expression(context, bindingPower);
      advance(")", t);

      if (nextop.value === "in" && state.option.forin) {
        state.forinifcheckneeded = true;

        if (state.forinifchecks === undefined) {
          state.forinifchecks = [];
        }

        // Push a new for-in-if check onto the stack. The type will be modified
        // when the loop's body is parsed and a suitable if statement exists.
        state.forinifchecks.push({
          type: "(none)"
        });
      }

      state.funct["(breakage)"] += 1;
      state.funct["(loopage)"] += 1;

      s = block(context, true, true);

      if (nextop.value === "in" && state.option.forin) {
        if (state.forinifchecks && state.forinifchecks.length > 0) {
          var check = state.forinifchecks.pop();

          if (// No if statement or not the first statement in loop body
              s && s.length > 0 && (typeof s[0] !== "object" || s[0].value !== "if") ||
              // Positive if statement is not the only one in loop body
              check.type === "(positive)" && s.length > 1 ||
              // Negative if statement but no continue
              check.type === "(negative)") {
            warning("W089", this);
          }
        }

        // Reset the flag in case no if statement was contained in the loop body
        state.forinifcheckneeded = false;
      }

      state.funct["(breakage)"] -= 1;
      state.funct["(loopage)"] -= 1;

    } else {
      if (foreachtok) {
        error("E045", foreachtok);
      }
      nolinebreak(state.tokens.curr);
      advance(";");
      if (decl) {
        if (decl.value === "const"  && !decl.hasInitializer) {
          warning("E012", decl, decl.first[0].value);
        }

        decl.first.forEach(function(token) {
          state.funct["(scope)"].initialize(token.value);
        });
      }

      // start loopage after the first ; as the next two expressions are executed
      // on every loop
      state.funct["(loopage)"] += 1;
      if (state.tokens.next.id !== ";") {
        checkCondAssignment(expression(context, 0));
      }
      nolinebreak(state.tokens.curr);
      advance(";");
      if (state.tokens.next.id === ";") {
        error("E021", state.tokens.next, ")", ";");
      }
      if (state.tokens.next.id !== ")") {
        for (;;) {
          expression(context, 0);
          if (state.tokens.next.id !== ",") {
            break;
          }
          parseComma();
        }
      }
      advance(")", t);
      state.funct["(breakage)"] += 1;
      block(context, true, true);
      state.funct["(breakage)"] -= 1;
      state.funct["(loopage)"] -= 1;
    }

    // unstack loop blockscope
    if (letscope) {
      state.funct["(scope)"].unstack();
    }
    return this;
  }).labelled = true;


  stmt("break", function() {
    var v = state.tokens.next.value;

    if (!state.option.asi)
      nolinebreak(this);

    if (state.tokens.next.id !== ";" && !state.tokens.next.reach &&
        state.tokens.curr.line === startLine(state.tokens.next)) {
      if (!state.funct["(scope)"].funct.hasBreakLabel(v)) {
        warning("W090", state.tokens.next, v);
      }
      this.first = state.tokens.next;
      advance();
    } else {
      if (state.funct["(breakage)"] === 0)
        warning("W052", state.tokens.next, this.value);
    }

    reachable(this);

    return this;
  }).exps = true;


  stmt("continue", function() {
    var v = state.tokens.next.value;

    if (state.funct["(breakage)"] === 0 || !state.funct["(loopage)"]) {
      warning("W052", state.tokens.next, this.value);
    }

    if (!state.option.asi)
      nolinebreak(this);

    if (state.tokens.next.id !== ";" && !state.tokens.next.reach) {
      if (state.tokens.curr.line === startLine(state.tokens.next)) {
        if (!state.funct["(scope)"].funct.hasBreakLabel(v)) {
          warning("W090", state.tokens.next, v);
        }
        this.first = state.tokens.next;
        advance();
      }
    }

    reachable(this);

    return this;
  }).exps = true;


  stmt("return", function(context) {
    if (this.line === startLine(state.tokens.next)) {
      if (state.tokens.next.id !== ";" && !state.tokens.next.reach) {
        this.first = expression(context, 0);

        if (this.first &&
            this.first.type === "(punctuator)" && this.first.value === "=" &&
            !this.first.paren && !state.option.boss) {
          warningAt("W093", this.first.line, this.first.character);
        }

        if (state.option.noreturnawait && context & prodParams.async &&
            !(context & prodParams.tryClause) &&
            this.first.identifier && this.first.value === "await") {
          warning("W146", this.first);
        }
      }
    } else {
      if (state.tokens.next.type === "(punctuator)" &&
        ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) {
        nolinebreak(this); // always warn (Line breaking error)
      }
    }

    reachable(this);

    return this;
  }).exps = true;

  prefix("await", function(context) {
    if (context & prodParams.async) {
      // If the parameters of the current function scope have not been defined,
      // it is because the current expression is contained within the parameter
      // list.
      if (!state.funct["(params)"]) {
        error("E024", this, "await");
      }

      expression(context, 0);
      return this;
    } else {
      this.exps = false;
      return state.syntax["(identifier)"].nud.apply(this, arguments);
    }
  }).exps = true;

  (function(asyncSymbol) {
    asyncSymbol.meta = { es5: true, isFutureReservedWord: true, strictOnly: true };
    asyncSymbol.isFunc = function() {
      var next = state.tokens.next;
      var afterParens;

      if (this.line !== next.line) {
        return false;
      }

      if (next.id === "function") {
        return true;
      }

      if (next.id === "(") {
        afterParens = peekThroughParens(0);

        return afterParens.id === "=>";
      }

      if (next.identifier) {
        return peek().id === "=>";
      }

      return false;
    };
    asyncSymbol.useFud = asyncSymbol.isFunc;
    // async function declaration
    asyncSymbol.fud = function(context) {
      if (!state.inES8()) {
        warning("W119", this, "async functions", "8");
      }
      context |= prodParams.preAsync;
      context |= prodParams.initial;
      this.func = expression(context, 0);
      this.block = this.func.block;
      this.exps = this.func.exps;
      return this;
    };
    asyncSymbol.exps = true;
    delete asyncSymbol.reserved;
  }(prefix("async", function(context, rbp) {
    if (this.isFunc(context)) {
      if (!state.inES8()) {
        warning("W119", this, "async functions", "8");
      }

      context |= prodParams.preAsync;
      this.func = expression(context, rbp);
      this.identifier = false;
      return this;
    }

    this.exps = false;
    return state.syntax["(identifier)"].nud.apply(this, arguments);
  })));

  (function(x) {
    x.exps = true;
    x.lbp = x.rbp = 25;
    x.ltBoundary = "after";
  }(prefix("yield", function(context) {
    if (state.inMoz()) {
      return mozYield.call(this, context);
    }
    var prev = state.tokens.prev;

    // If the parameters of the current function scope have not been defined,
    // it is because the current expression is contained within the parameter
    // list.
    if (!state.funct["(params)"]) {
      error("E024", this, "yield");
    }

    if (!this.beginsStmt && prev.lbp > 30 && !checkPunctuators(prev, ["("])) {
      error("E061", this);
    }

    if (state.inES6(true) && !state.funct["(generator)"]) {
      // If it's a yield within a catch clause inside a generator then that's ok
      if (!("(catch)" === state.funct["(name)"] && state.funct["(context)"]["(generator)"])) {
        error("E046", state.tokens.curr, "yield");
      }
    } else if (!state.inES6()) {
      warning("W104", state.tokens.curr, "yield", "6");
    }
    state.funct["(generator)"] = "yielded";

    if (state.tokens.next.value === "*") {
      advance("*");
    }

    // Parse operand
    if (!isEndOfExpr() && state.tokens.next.id !== ",") {
      if (state.tokens.next.nud) {

        nobreaknonadjacent(state.tokens.curr, state.tokens.next);
        this.first = expression(context, 10);

        if (this.first.type === "(punctuator)" && this.first.value === "=" &&
            !this.first.paren && !state.option.boss) {
          warningAt("W093", this.first.line, this.first.character);
        }
      } else if (state.tokens.next.led) {
        if (state.tokens.next.id !== ",") {
          error("W017", state.tokens.next);
        }
      }
    }

    return this;
  })));

  /**
   * Parsing logic for non-standard Mozilla implementation of `yield`
   * expressions.
   */
  var mozYield = function(context) {
    var prev = state.tokens.prev;
    if (state.inES6(true) && !state.funct["(generator)"]) {
      // If it's a yield within a catch clause inside a generator then that's ok
      if (!("(catch)" === state.funct["(name)"] && state.funct["(context)"]["(generator)"])) {
        error("E046", state.tokens.curr, "yield");
      }
    }
    state.funct["(generator)"] = "yielded";
    var delegatingYield = false;

    if (state.tokens.next.value === "*") {
      delegatingYield = true;
      advance("*");
    }

    if (this.line === startLine(state.tokens.next)) {
      if (delegatingYield ||
          (state.tokens.next.id !== ";" && !state.option.asi &&
           !state.tokens.next.reach && state.tokens.next.nud)) {

        nobreaknonadjacent(state.tokens.curr, state.tokens.next);
        this.first = expression(context, 10);

        if (this.first.type === "(punctuator)" && this.first.value === "=" &&
            !this.first.paren && !state.option.boss) {
          warningAt("W093", this.first.line, this.first.character);
        }
      }

      if (state.tokens.next.id !== ")" &&
          (prev.lbp > 30 || (!prev.assign && !isEndOfExpr()) || prev.id === "yield")) {
        error("E050", this);
      }
    } else if (!state.option.asi) {
      nolinebreak(this); // always warn (Line breaking error)
    }
    return this;
  };

  stmt("throw", function(context) {
    nolinebreak(this);
    this.first = expression(context, 20);

    reachable(this);

    return this;
  }).exps = true;

  stmt("import", function(context) {
    if (!state.funct["(scope)"].block.isGlobal()) {
      error("E053", state.tokens.curr, "Import");
    }

    if (!state.inES6()) {
      warning("W119", state.tokens.curr, "import", "6");
    }

    if (state.tokens.next.type === "(string)") {
      // ModuleSpecifier :: StringLiteral
      advance("(string)");
      return this;
    }

    if (state.tokens.next.identifier) {
      // ImportClause :: ImportedDefaultBinding
      this.name = identifier(context);
      // Import bindings are immutable (see ES6 8.1.1.5.5)
      state.funct["(scope)"].addlabel(this.name, {
        type: "import",
        initialized: true,
        token: state.tokens.curr });

      if (state.tokens.next.value === ",") {
        // ImportClause :: ImportedDefaultBinding , NameSpaceImport
        // ImportClause :: ImportedDefaultBinding , NamedImports
        advance(",");
        // At this point, we intentionally fall through to continue matching
        // either NameSpaceImport or NamedImports.
        // Discussion:
        // https://github.com/jshint/jshint/pull/2144#discussion_r23978406
      } else {
        advance("from");
        advance("(string)");
        return this;
      }
    }

    if (state.tokens.next.id === "*") {
      // ImportClause :: NameSpaceImport
      advance("*");
      advance("as");
      if (state.tokens.next.identifier) {
        this.name = identifier(context);
        // Import bindings are immutable (see ES6 8.1.1.5.5)
        state.funct["(scope)"].addlabel(this.name, {
          type: "import",
          initialized: true,
          token: state.tokens.curr });
      }
    } else {
      // ImportClause :: NamedImports
      advance("{");
      for (;;) {
        if (state.tokens.next.value === "}") {
          advance("}");
          break;
        }
        var importName;
        if (state.tokens.next.type === "default") {
          importName = "default";
          advance("default");
        } else {
          importName = identifier(context);
        }
        if (state.tokens.next.value === "as") {
          advance("as");
          importName = identifier(context);
        }

        // Import bindings are immutable (see ES6 8.1.1.5.5)
        state.funct["(scope)"].addlabel(importName, {
          type: "import",
          initialized: true,
          token: state.tokens.curr });

        if (state.tokens.next.value === ",") {
          advance(",");
        } else if (state.tokens.next.value === "}") {
          advance("}");
          break;
        } else {
          error("E024", state.tokens.next, state.tokens.next.value);
          break;
        }
      }
    }

    // FromClause
    advance("from");
    advance("(string)");

    // Support for ES2015 modules was released without warning for `import`
    // declarations that lack bindings. Issuing a warning would therefor
    // constitute a breaking change.
    // TODO: enable this warning in JSHint 3
    // if (hasBindings) {
    //   warning("W142", this, "import", moduleSpecifier);
    // }

    return this;
  }).exps = true;

  stmt("export", function(context) {
    var ok = true;
    var token;
    var identifier;
    var moduleSpecifier;
    context = context | prodParams.export;

    if (!state.inES6()) {
      warning("W119", state.tokens.curr, "export", "6");
      ok = false;
    }

    if (!state.funct["(scope)"].block.isGlobal()) {
      error("E053", state.tokens.curr, "Export");
      ok = false;
    }

    if (state.tokens.next.value === "*") {
      // ExportDeclaration :: export * FromClause
      advance("*");
      advance("from");
      advance("(string)");
      return this;
    }

    if (state.tokens.next.type === "default") {
      // ExportDeclaration ::
      //      export default [lookahead ∉ { function, class }] AssignmentExpression[In] ;
      //      export default HoistableDeclaration
      //      export default ClassDeclaration

      // because the 'name' of a default-exported function is, confusingly, 'default'
      // see https://bocoup.com/blog/whats-in-a-function-name
      state.nameStack.set(state.tokens.next);

      advance("default");
      var exportType = state.tokens.next.id;
      if (exportType === "function") {
        this.block = true;
        advance("function");
        state.syntax["function"].fud(context);
      } else if (exportType === "async" && peek().id === "function") {
        this.block = true;
        advance("async");
        advance("function");
        state.syntax["function"].fud(context | prodParams.preAsync);
      } else if (exportType === "class") {
        this.block = true;
        advance("class");
        state.syntax["class"].fud(context);
      } else {
        token = expression(context, 10);
        if (token.identifier) {
          identifier = token.value;
          state.funct["(scope)"].setExported(identifier, token);
        }
      }
      return this;
    }
    if (state.tokens.next.value === "{") {
      // ExportDeclaration :: export ExportClause
      advance("{");
      var exportedTokens = [];
      while (!checkPunctuator(state.tokens.next, "}")) {
        if (!state.tokens.next.identifier) {
          error("E030", state.tokens.next, state.tokens.next.value);
        }
        advance();

        exportedTokens.push(state.tokens.curr);

        if (state.tokens.next.value === "as") {
          advance("as");
          if (!state.tokens.next.identifier) {
            error("E030", state.tokens.next, state.tokens.next.value);
          }
          advance();
        }

        if (!checkPunctuator(state.tokens.next, "}")) {
          advance(",");
        }
      }
      advance("}");
      if (state.tokens.next.value === "from") {
        // ExportDeclaration :: export ExportClause FromClause
        advance("from");
        moduleSpecifier = state.tokens.next;
        advance("(string)");
      } else if (ok) {
        exportedTokens.forEach(function(token) {
          state.funct["(scope)"].setExported(token.value, token);
        });
      }

      if (exportedTokens.length === 0) {
        if (moduleSpecifier) {
          warning("W142", this, "export", moduleSpecifier.value);
        } else {
          warning("W141", this, "export");
        }
      }

      return this;
    } else if (state.tokens.next.id === "var") {
      // ExportDeclaration :: export VariableStatement
      advance("var");
      state.tokens.curr.fud(context);
    } else if (state.tokens.next.id === "let") {
      // ExportDeclaration :: export VariableStatement
      advance("let");
      state.tokens.curr.fud(context);
    } else if (state.tokens.next.id === "const") {
      // ExportDeclaration :: export VariableStatement
      advance("const");
      state.tokens.curr.fud(context);
    } else if (state.tokens.next.id === "function") {
      // ExportDeclaration :: export Declaration
      this.block = true;
      advance("function");
      state.syntax["function"].fud(context);
    } else if (state.tokens.next.id === "async" && peek().id === "function") {
      // ExportDeclaration :: export Declaration
      this.block = true;
      advance("async");
      advance("function");
      state.syntax["function"].fud(context | prodParams.preAsync);
    } else if (state.tokens.next.id === "class") {
      // ExportDeclaration :: export Declaration
      this.block = true;
      advance("class");
      state.syntax["class"].fud(context);
    } else {
      error("E024", state.tokens.next, state.tokens.next.value);
    }

    return this;
  }).exps = true;

  /**
   * Determine if SuperCall or SuperProperty may be used in the current context
   * (as described by the provided "functor" object).
   *
   * @param {string} type - one of "property" or "call"
   * @param {object} funct - a "functor" object describing the current function
   *                         context
   *
   * @returns {boolean}
   */
  function supportsSuper(type, funct) {
    if (type === "call" && funct["(async)"]) {
      return false;
    }

    if (type === "property" && funct["(method)"]) {
      return true;
    }

    if (type === "call" && funct["(statement)"] &&
      funct["(statement)"].id === "class") {
      return true;
    }

    if (funct["(arrow)"]) {
      return supportsSuper(type, funct["(context)"]);
    }

    return false;
  }

  var superNud = function() {
    var next = state.tokens.next;

    if (checkPunctuators(next, ["[", "."])) {
      if (!supportsSuper("property", state.funct)) {
        error("E063", this);
      }
    } else if (checkPunctuator(next, "(")) {
      if (!supportsSuper("call", state.funct)) {
        error("E064", this);
      }
    } else {
      error("E024", next, next.value || next.id);
    }

    return this;
  };

  // Future Reserved Words

  FutureReservedWord("abstract");
  FutureReservedWord("boolean");
  FutureReservedWord("byte");
  FutureReservedWord("char");
  FutureReservedWord("double");
  FutureReservedWord("enum", { es5: true });
  FutureReservedWord("export", { es5: true });
  FutureReservedWord("extends", { es5: true });
  FutureReservedWord("final");
  FutureReservedWord("float");
  FutureReservedWord("goto");
  FutureReservedWord("implements", { es5: true, strictOnly: true });
  FutureReservedWord("import", { es5: true });
  FutureReservedWord("int");
  FutureReservedWord("interface", { es5: true, strictOnly: true });
  FutureReservedWord("long");
  FutureReservedWord("native");
  FutureReservedWord("package", { es5: true, strictOnly: true });
  FutureReservedWord("private", { es5: true, strictOnly: true });
  FutureReservedWord("protected", { es5: true, strictOnly: true });
  FutureReservedWord("public", { es5: true, strictOnly: true });
  FutureReservedWord("short");
  FutureReservedWord("static", { es5: true, strictOnly: true });
  FutureReservedWord("synchronized");
  FutureReservedWord("transient");
  FutureReservedWord("volatile");

  // this function is used to determine whether a squarebracket or a curlybracket
  // expression is a comprehension array, destructuring assignment or a json value.

  var lookupBlockType = function() {
    var pn, pn1, prev;
    var i = -1;
    var bracketStack = 0;
    var ret = {};
    if (checkPunctuators(state.tokens.curr, ["[", "{"])) {
      bracketStack += 1;
    }
    do {
      prev = i === -1 ? state.tokens.curr : pn;
      pn = i === -1 ? state.tokens.next : peek(i);
      pn1 = peek(i + 1);
      i = i + 1;
      if (checkPunctuators(pn, ["[", "{"])) {
        bracketStack += 1;
      } else if (checkPunctuators(pn, ["]", "}"])) {
        bracketStack -= 1;
      }
      if (bracketStack === 1 && pn.identifier && pn.value === "for" &&
          !checkPunctuator(prev, ".")) {
        ret.isCompArray = true;
        ret.notJson = true;
        break;
      }
      if (bracketStack === 0 && checkPunctuators(pn, ["}", "]"])) {
        if (pn1.value === "=") {
          ret.isDestAssign = true;
          ret.notJson = true;
          break;
        } else if (pn1.value === ".") {
          ret.notJson = true;
          break;
        }
      }
      if (checkPunctuator(pn, ";")) {
        ret.notJson = true;
      }
    } while (bracketStack > 0 && pn.id !== "(end)");
    return ret;
  };

  /**
   * Update an object used to track property names within object initializers
   * and class bodies. Produce warnings in response to duplicated names.
   *
   * @param {object} props - a collection of all properties of the object or
   *                         class to which the current property is being
   *                         assigned
   * @param {string} name - the property name
   * @param {object} tkn - the token defining the property
   * @param {boolean} [isClass] - whether the accessor is part of an ES6 Class
   *                              definition
   * @param {boolean} [isStatic] - whether the accessor is a static method
   * @param {boolean} [isComputed] - whether the property is a computed expression like [Symbol.iterator]
   */
  function saveProperty(props, name, tkn, isClass, isStatic, isComputed) {
    if (tkn.identifier) {
      name = tkn.value;
    }
    var key = name;
    if (isClass && isStatic) {
      key = "static " + name;
    }

    if (props[key] && name !== "__proto__" && !isComputed) {
      var msg = ["key", "class method", "static class method"];
      msg = msg[(isClass || false) + (isStatic || false)];
      warning("W075", state.tokens.next, msg, name);
    } else {
      props[key] = Object.create(null);
    }

    props[key].basic = true;
    props[key].basictkn = tkn;
  }

  /**
   * Update an object used to track property names within object initializers
   * and class bodies. Produce warnings in response to duplicated names.
   *
   * @param {string} accessorType - Either "get" or "set"
   * @param {object} props - a collection of all properties of the object or
   *                         class to which the current accessor is being
   *                         assigned
   * @param {object} tkn - the identifier token representing the accessor name
   * @param {boolean} [isClass] - whether the accessor is part of an ES6 Class
   *                              definition
   * @param {boolean} [isStatic] - whether the accessor is a static method
   */
  function saveAccessor(accessorType, props, name, tkn, isClass, isStatic) {
    var flagName = accessorType === "get" ? "getterToken" : "setterToken";
    var key = name;
    state.tokens.curr.accessorType = accessorType;
    state.nameStack.set(tkn);
    if (isClass && isStatic) {
      key = "static " + name;
    }

    if (props[key]) {
      if ((props[key].basic || props[key][flagName]) && name !== "__proto__") {
        var msg = "";
        if (isClass) {
          if (isStatic) {
            msg += "static ";
          }
          msg += accessorType + "ter method";
        } else {
          msg = "key";
        }
        warning("W075", state.tokens.next, msg, name);
      }
    } else {
      props[key] = Object.create(null);
    }

    props[key][flagName] = tkn;
    if (isStatic) {
      props[key].static = true;
    }
  }

  /**
   * Parse a computed property name within object initializers and class bodies
   * as introduced by ES2015. For example:
   *
   *     void {
   *       [object.method()]: null
   *     };
   *
   * @param {number} context - the parsing context
   *
   * @returns {object} - the token value that describes the expression which
   *                     defines the property name
   */
  function computedPropertyName(context) {
    advance("[");

    // Explicitly reclassify token as a delimeter to prevent its later
    // interpretation as an "infix" operator.
    state.tokens.curr.delim = true;
    state.tokens.curr.lbp = 0;

    if (!state.inES6()) {
      warning("W119", state.tokens.curr, "computed property names", "6");
    }
    var value = expression(context & ~prodParams.noin, 10);
    advance("]");
    return value;
  }

  /**
   * Test whether a given token is a punctuator whose `value` property matches
   * one of the specified values. This function explicitly verifies the token's
   * `type` property so that like-valued string literals (e.g. `";"`) do not
   * produce false positives.
   *
   * @param {Token} token
   * @param {Array.<string>} values
   *
   * @returns {boolean}
   */
  function checkPunctuators(token, values) {
    if (token.type === "(punctuator)") {
      return _.includes(values, token.value);
    }
    return false;
  }

  /**
   * Test whether a given token is a punctuator whose `value` property matches
   * the specified value. This function explicitly verifies the token's `type`
   * property so that like-valued string literals (e.g. `";"`) do not produce
   * false positives.
   *
   * @param {Token} token
   * @param {string} value
   *
   * @returns {boolean}
   */
  function checkPunctuator(token, value) {
    return token.type === "(punctuator)" && token.value === value;
  }

  // Check whether this function has been reached for a destructuring assign with undeclared values
  function destructuringAssignOrJsonValue(context) {
    // lookup for the assignment (ECMAScript 6 only)
    // if it has semicolons, it is a block, so go parse it as a block
    // or it's not a block, but there are assignments, check for undeclared variables

    var block = lookupBlockType();
    if (block.notJson) {
      if (!state.inES6() && block.isDestAssign) {
        warning("W104", state.tokens.curr, "destructuring assignment", "6");
      }
      statements(context);
    // otherwise parse json value
    } else {
      state.option.laxbreak = true;
      state.jsonMode = true;
      jsonValue();
    }
  }

  /**
   * Parse and define the three states of a list comprehension in order to
   * avoid defining global variables, but keeping them to the list
   * comprehension scope only. The order of the states are as follows:
   *
   * - "use" - which will be the returned iterative part of the list
   *   comprehension
   * - "define" - which will define the variables local to the list
   *   comprehension
   * - "filter" - which will help filter out values
   */
  var arrayComprehension = function() {
    var CompArray = function() {
      this.mode = "use";
      this.variables = [];
    };
    var _carrays = [];
    var _current;
    function declare(v) {
      var l = _current.variables.filter(function(elt) {
        // if it has, change its undef state
        if (elt.value === v) {
          elt.undef = false;
          return v;
        }
      }).length;
      return l !== 0;
    }
    function use(v) {
      var l = _current.variables.filter(function(elt) {
        // and if it has been defined
        if (elt.value === v && !elt.undef) {
          if (elt.unused === true) {
            elt.unused = false;
          }
          return v;
        }
      }).length;
      // otherwise we warn about it
      return (l === 0);
    }
    return { stack: function() {
          _current = new CompArray();
          _carrays.push(_current);
        },
        unstack: function() {
          _current.variables.filter(function(v) {
            if (v.unused)
              warning("W098", v.token, v.token.raw_text || v.value);
            if (v.undef)
              state.funct["(scope)"].block.use(v.value, v.token);
          });
          _carrays.splice(-1, 1);
          _current = _carrays[_carrays.length - 1];
        },
        setState: function(s) {
          if (_.includes(["use", "define", "generate", "filter"], s))
            _current.mode = s;
        },
        check: function(v) {
          if (!_current) {
            return;
          }
          // When we are in "use" state of the list comp, we enqueue that var
          if (_current && _current.mode === "use") {
            if (use(v)) {
              _current.variables.push({
                token: state.tokens.curr,
                value: v,
                undef: true,
                unused: false
              });
            }
            return true;
          // When we are in "define" state of the list comp,
          } else if (_current && _current.mode === "define") {
            // check if the variable has been used previously
            if (!declare(v)) {
              _current.variables.push({
                token: state.tokens.curr,
                value: v,
                undef: false,
                unused: true
              });
            }
            return true;
          // When we are in the "generate" state of the list comp,
          } else if (_current && _current.mode === "generate") {
            state.funct["(scope)"].block.use(v, state.tokens.curr);
            return true;
          // When we are in "filter" state,
          } else if (_current && _current.mode === "filter") {
            // we check whether current variable has been declared
            if (use(v)) {
              // if not we warn about it
              state.funct["(scope)"].block.use(v, state.tokens.curr);
            }
            return true;
          }
          return false;
        }
        };
  };


  /**
   * Parse input according to the JSON format.
   *
   * http://json.org/
   */
  function jsonValue() {
    function jsonObject() {
      var o = {}, t = state.tokens.next;
      advance("{");
      if (state.tokens.next.id !== "}") {
        for (;;) {
          if (state.tokens.next.id === "(end)") {
            error("E026", state.tokens.next, t.line);
          } else if (state.tokens.next.id === "}") {
            warning("W094", state.tokens.curr);
            break;
          } else if (state.tokens.next.id === ",") {
            error("E028", state.tokens.next);
          } else if (state.tokens.next.id !== "(string)") {
            warning("W095", state.tokens.next, state.tokens.next.value);
          }
          if (o[state.tokens.next.value] === true) {
            warning("W075", state.tokens.next, "key", state.tokens.next.value);
          } else if ((state.tokens.next.value === "__proto__" &&
            !state.option.proto) || (state.tokens.next.value === "__iterator__" &&
            !state.option.iterator)) {
            warning("W096", state.tokens.next, state.tokens.next.value);
          } else {
            o[state.tokens.next.value] = true;
          }
          advance();
          advance(":");
          jsonValue();
          if (state.tokens.next.id !== ",") {
            break;
          }
          advance(",");
        }
      }
      advance("}");
    }

    function jsonArray() {
      var t = state.tokens.next;
      advance("[");
      if (state.tokens.next.id !== "]") {
        for (;;) {
          if (state.tokens.next.id === "(end)") {
            error("E027", state.tokens.next, t.line);
          } else if (state.tokens.next.id === "]") {
            warning("W094", state.tokens.curr);
            break;
          } else if (state.tokens.next.id === ",") {
            error("E028", state.tokens.next);
          }
          jsonValue();
          if (state.tokens.next.id !== ",") {
            break;
          }
          advance(",");
        }
      }
      advance("]");
    }

    switch (state.tokens.next.id) {
    case "{":
      jsonObject();
      break;
    case "[":
      jsonArray();
      break;
    case "true":
    case "false":
    case "null":
    case "(number)":
    case "(string)":
      advance();
      break;
    case "-":
      advance("-");
      advance("(number)");
      break;
    default:
      error("E003", state.tokens.next);
    }
  }

  /**
   * Lint dynamically-evaluated code, appending any resulting errors/warnings
   * into the global `errors` array.
   *
   * @param {array} internals - collection of "internals" objects describing
   *                            string tokens that contain evaluated code
   * @param {object} options - linting options to apply
   * @param {object} globals - globally-defined bindings for the evaluated code
   */
  function lintEvalCode(internals, options, globals) {
    var priorErrorCount, idx, jdx, internal;

    for (idx = 0; idx < internals.length; idx += 1) {
      internal = internals[idx];
      options.scope = internal.elem;
      priorErrorCount = JSHINT.errors.length;

      itself(internal.code, options, globals);

      for (jdx = priorErrorCount; jdx < JSHINT.errors.length; jdx += 1) {
        JSHINT.errors[jdx].line += internal.token.line - 1;
      }
    }
  }

  var escapeRegex = function(str) {
    return str.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&");
  };

  // The actual JSHINT function itself.
  var itself = function(s, o, g) {
    var x, reIgnoreStr, reIgnore;
    var optionKeys, newOptionObj, newIgnoredObj;

    o = _.clone(o);
    state.reset();
    newOptionObj = state.option;
    newIgnoredObj = state.ignored;

    if (o && o.scope) {
      JSHINT.scope = o.scope;
    } else {
      JSHINT.errors = [];
      JSHINT.internals = [];
      JSHINT.blacklist = {};
      JSHINT.scope = "(main)";
    }

    predefined = Object.create(null);
    combine(predefined, vars.ecmaIdentifiers[3]);
    combine(predefined, vars.reservedVars);

    declared = Object.create(null);
    var exported = Object.create(null); // Variables that live outside the current file

    function each(obj, cb) {
      if (!obj)
        return;

      if (!Array.isArray(obj) && typeof obj === "object")
        obj = Object.keys(obj);

      obj.forEach(cb);
    }

    if (o) {

      each([o.predef, o.globals], function(dict) {
        each(dict, function(item) {
          var slice, prop;

          if (item[0] === "-") {
            slice = item.slice(1);
            JSHINT.blacklist[slice] = slice;
            // remove from predefined if there
            delete predefined[slice];
          } else {
            prop = Object.getOwnPropertyDescriptor(dict, item);
            predefined[item] = prop ? prop.value : false;
          }
        });
      });

      each(o.exported || null, function(item) {
        exported[item] = true;
      });

      delete o.predef;
      delete o.exported;

      optionKeys = Object.keys(o);
      for (x = 0; x < optionKeys.length; x++) {
        if (/^-W\d{3}$/g.test(optionKeys[x])) {
          newIgnoredObj[optionKeys[x].slice(1)] = true;
        } else {
          var optionKey = optionKeys[x];
          newOptionObj[optionKey] = o[optionKey];
        }
      }
    }

    state.option = newOptionObj;
    state.ignored = newIgnoredObj;

    state.option.indent = state.option.indent || 4;
    state.option.maxerr = state.option.maxerr || 50;

    indent = 1;

    var scopeManagerInst = scopeManager(state, predefined, exported, declared);
    scopeManagerInst.on("warning", function(ev) {
      warning.apply(null, [ ev.code, ev.token].concat(ev.data));
    });

    scopeManagerInst.on("error", function(ev) {
      error.apply(null, [ ev.code, ev.token ].concat(ev.data));
    });

    state.funct = functor("(global)", null, {
      "(global)"    : true,
      "(scope)"     : scopeManagerInst,
      "(comparray)" : arrayComprehension(),
      "(metrics)"   : createMetrics(state.tokens.next)
    });

    functions = [state.funct];
    urls = [];
    member = {};
    membersOnly = null;
    inblock = false;
    lookahead = [];

    if (!isString(s) && !Array.isArray(s)) {
      errorAt("E004", 0);
      return false;
    }

    api = {
      get isJSON() {
        return state.jsonMode;
      },

      getOption: function(name) {
        return state.option[name] || null;
      },

      getCache: function(name) {
        return state.cache[name];
      },

      setCache: function(name, value) {
        state.cache[name] = value;
      },

      warn: function(code, data) {
        warningAt.apply(null, [ code, data.line, data.char ].concat(data.data));
      },

      on: function(names, listener) {
        names.split(" ").forEach(function(name) {
          emitter.on(name, listener);
        }.bind(this));
      }
    };

    emitter.removeAllListeners();
    (extraModules || []).forEach(function(func) {
      func(api);
    });

    state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"];
    if (o && o.ignoreDelimiters) {

      if (!Array.isArray(o.ignoreDelimiters)) {
        o.ignoreDelimiters = [o.ignoreDelimiters];
      }

      o.ignoreDelimiters.forEach(function(delimiterPair) {
        if (!delimiterPair.start || !delimiterPair.end)
            return;

        reIgnoreStr = escapeRegex(delimiterPair.start) +
                      "[\\s\\S]*?" +
                      escapeRegex(delimiterPair.end);

        reIgnore = new RegExp(reIgnoreStr, "ig");

        s = s.replace(reIgnore, function(match) {
          return match.replace(/./g, " ");
        });
      });
    }

    lex = new Lexer(s);

    lex.on("warning", function(ev) {
      warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data));
    });

    lex.on("error", function(ev) {
      errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data));
    });

    lex.on("fatal", function(ev) {
      quit("E041", ev);
    });

    lex.on("Identifier", function(ev) {
      emitter.emit("Identifier", ev);
    });

    lex.on("String", function(ev) {
      emitter.emit("String", ev);
    });

    lex.on("Number", function(ev) {
      emitter.emit("Number", ev);
    });

    // Check options
    var name;
    for (name in o) {
      if (_.has(o, name)) {
        checkOption(name, true, state.tokens.curr);
      }
    }
    if (o) {
      for (name in o.unstable) {
        if (_.has(o.unstable, name)) {
          checkOption(name, false, state.tokens.curr);
        }
      }
    }

    try {
      applyOptions();

      // combine the passed globals after we've assumed all our options
      combine(predefined, g || {});

      //reset values
      parseComma.first = true;

      advance();
      switch (state.tokens.next.id) {
      case "{":
      case "[":
        destructuringAssignOrJsonValue(0);
        break;
      default:
        directives();

        if (state.directive["use strict"]) {
          if (!state.allowsGlobalUsd()) {
            warning("W097", state.tokens.prev);
          }
        }

        statements(0);
      }

      if (state.tokens.next.id !== "(end)") {
        quit("E041", state.tokens.curr);
      }

      state.funct["(scope)"].unstack();

    } catch (err) {
      if (err && err.name === "JSHintError") {
        var nt = state.tokens.next || {};
        JSHINT.errors.push({
          scope     : "(main)",
          raw       : err.raw,
          code      : err.code,
          reason    : err.reason,
          line      : err.line || nt.line,
          character : err.character || nt.from
        });
      } else {
        throw err;
      }
    }

    // Loop over the listed "internals", and check them as well.
    if (JSHINT.scope === "(main)") {
      lintEvalCode(JSHINT.internals, o || {}, g);
    }

    return JSHINT.errors.length === 0;
  };

  // Modules.
  itself.addModule = function(func) {
    extraModules.push(func);
  };

  itself.addModule(style.register);

  // Data summary.
  itself.data = function() {
    var data = {
      functions: [],
      options: state.option
    };

    var fu, f, i, n, globals;

    if (itself.errors.length) {
      data.errors = itself.errors;
    }

    if (state.jsonMode) {
      data.json = true;
    }

    var impliedGlobals = state.funct["(scope)"].getImpliedGlobals();
    if (impliedGlobals.length > 0) {
      data.implieds = impliedGlobals;
    }

    if (urls.length > 0) {
      data.urls = urls;
    }

    globals = state.funct["(scope)"].getUsedOrDefinedGlobals();
    if (globals.length > 0) {
      data.globals = globals;
    }

    for (i = 1; i < functions.length; i += 1) {
      f = functions[i];
      fu = {};

      fu.name = f["(name)"];
      fu.param = f["(params)"];
      fu.line = f["(line)"];
      fu.character = f["(character)"];
      fu.last = f["(last)"];
      fu.lastcharacter = f["(lastcharacter)"];

      fu.metrics = {
        complexity: f["(metrics)"].ComplexityCount,
        parameters: f["(metrics)"].arity,
        statements: f["(metrics)"].statementCount
      };

      data.functions.push(fu);
    }

    var unuseds = state.funct["(scope)"].getUnuseds();
    if (unuseds.length > 0) {
      data.unused = unuseds;
    }

    for (n in member) {
      if (typeof member[n] === "number") {
        data.member = member;
        break;
      }
    }

    return data;
  };

  itself.jshint = itself;

  return itself;
}());

// Make JSHINT a Node module, if possible.
if (typeof exports === "object" && exports) {
  exports.JSHINT = JSHINT;
}


/***/ }),
/* 458 */
/*!****************************************************************!*\
  !*** ./node_modules/codemirror/addon/selection/active-line.js ***!
  \****************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  "use strict";
  var WRAP_CLASS = "CodeMirror-activeline";
  var BACK_CLASS = "CodeMirror-activeline-background";
  var GUTT_CLASS = "CodeMirror-activeline-gutter";

  CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) {
    var prev = old == CodeMirror.Init ? false : old;
    if (val == prev) return
    if (prev) {
      cm.off("beforeSelectionChange", selectionChange);
      clearActiveLines(cm);
      delete cm.state.activeLines;
    }
    if (val) {
      cm.state.activeLines = [];
      updateActiveLines(cm, cm.listSelections());
      cm.on("beforeSelectionChange", selectionChange);
    }
  });

  function clearActiveLines(cm) {
    for (var i = 0; i < cm.state.activeLines.length; i++) {
      cm.removeLineClass(cm.state.activeLines[i], "wrap", WRAP_CLASS);
      cm.removeLineClass(cm.state.activeLines[i], "background", BACK_CLASS);
      cm.removeLineClass(cm.state.activeLines[i], "gutter", GUTT_CLASS);
    }
  }

  function sameArray(a, b) {
    if (a.length != b.length) return false;
    for (var i = 0; i < a.length; i++)
      if (a[i] != b[i]) return false;
    return true;
  }

  function updateActiveLines(cm, ranges) {
    var active = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      var option = cm.getOption("styleActiveLine");
      if (typeof option == "object" && option.nonEmpty ? range.anchor.line != range.head.line : !range.empty())
        continue
      var line = cm.getLineHandleVisualStart(range.head.line);
      if (active[active.length - 1] != line) active.push(line);
    }
    if (sameArray(cm.state.activeLines, active)) return;
    cm.operation(function() {
      clearActiveLines(cm);
      for (var i = 0; i < active.length; i++) {
        cm.addLineClass(active[i], "wrap", WRAP_CLASS);
        cm.addLineClass(active[i], "background", BACK_CLASS);
        cm.addLineClass(active[i], "gutter", GUTT_CLASS);
      }
      cm.state.activeLines = active;
    });
  }

  function selectionChange(cm, sel) {
    updateActiveLines(cm, sel.ranges);
  }
});


/***/ }),
/* 459 */
/*!*******************************************************************!*\
  !*** ./node_modules/codemirror/addon/scroll/annotatescrollbar.js ***!
  \*******************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineExtension("annotateScrollbar", function(options) {
    if (typeof options == "string") options = {className: options};
    return new Annotation(this, options);
  });

  CodeMirror.defineOption("scrollButtonHeight", 0);

  function Annotation(cm, options) {
    this.cm = cm;
    this.options = options;
    this.buttonHeight = options.scrollButtonHeight || cm.getOption("scrollButtonHeight");
    this.annotations = [];
    this.doRedraw = this.doUpdate = null;
    this.div = cm.getWrapperElement().appendChild(document.createElement("div"));
    this.div.style.cssText = "position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none";
    this.computeScale();

    function scheduleRedraw(delay) {
      clearTimeout(self.doRedraw);
      self.doRedraw = setTimeout(function() { self.redraw(); }, delay);
    }

    var self = this;
    cm.on("refresh", this.resizeHandler = function() {
      clearTimeout(self.doUpdate);
      self.doUpdate = setTimeout(function() {
        if (self.computeScale()) scheduleRedraw(20);
      }, 100);
    });
    cm.on("markerAdded", this.resizeHandler);
    cm.on("markerCleared", this.resizeHandler);
    if (options.listenForChanges !== false)
      cm.on("change", this.changeHandler = function() {
        scheduleRedraw(250);
      });
  }

  Annotation.prototype.computeScale = function() {
    var cm = this.cm;
    var hScale = (cm.getWrapperElement().clientHeight - cm.display.barHeight - this.buttonHeight * 2) /
      cm.getScrollerElement().scrollHeight
    if (hScale != this.hScale) {
      this.hScale = hScale;
      return true;
    }
  };

  Annotation.prototype.update = function(annotations) {
    this.annotations = annotations;
    this.redraw();
  };

  Annotation.prototype.redraw = function(compute) {
    if (compute !== false) this.computeScale();
    var cm = this.cm, hScale = this.hScale;

    var frag = document.createDocumentFragment(), anns = this.annotations;

    var wrapping = cm.getOption("lineWrapping");
    var singleLineH = wrapping && cm.defaultTextHeight() * 1.5;
    var curLine = null, curLineObj = null;
    function getY(pos, top) {
      if (curLine != pos.line) {
        curLine = pos.line;
        curLineObj = cm.getLineHandle(curLine);
      }
      if ((curLineObj.widgets && curLineObj.widgets.length) ||
          (wrapping && curLineObj.height > singleLineH))
        return cm.charCoords(pos, "local")[top ? "top" : "bottom"];
      var topY = cm.heightAtLine(curLineObj, "local");
      return topY + (top ? 0 : curLineObj.height);
    }

    var lastLine = cm.lastLine()
    if (cm.display.barWidth) for (var i = 0, nextTop; i < anns.length; i++) {
      var ann = anns[i];
      if (ann.to.line > lastLine) continue;
      var top = nextTop || getY(ann.from, true) * hScale;
      var bottom = getY(ann.to, false) * hScale;
      while (i < anns.length - 1) {
        if (anns[i + 1].to.line > lastLine) break;
        nextTop = getY(anns[i + 1].from, true) * hScale;
        if (nextTop > bottom + .9) break;
        ann = anns[++i];
        bottom = getY(ann.to, false) * hScale;
      }
      if (bottom == top) continue;
      var height = Math.max(bottom - top, 3);

      var elt = frag.appendChild(document.createElement("div"));
      elt.style.cssText = "position: absolute; right: 0px; width: " + Math.max(cm.display.barWidth - 1, 2) + "px; top: "
        + (top + this.buttonHeight) + "px; height: " + height + "px";
      elt.className = this.options.className;
      if (ann.id) {
        elt.setAttribute("annotation-id", ann.id);
      }
    }
    this.div.textContent = "";
    this.div.appendChild(frag);
  };

  Annotation.prototype.clear = function() {
    this.cm.off("refresh", this.resizeHandler);
    this.cm.off("markerAdded", this.resizeHandler);
    this.cm.off("markerCleared", this.resizeHandler);
    if (this.changeHandler) this.cm.off("change", this.changeHandler);
    this.div.parentNode.removeChild(this.div);
  };
});


/***/ }),
/* 460 */
/*!********************************************************************!*\
  !*** ./node_modules/codemirror/addon/search/matchesonscrollbar.js ***!
  \********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43), __webpack_require__(/*! ./searchcursor */ 191), __webpack_require__(/*! ../scroll/annotatescrollbar */ 459));
  else {}
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineExtension("showMatchesOnScrollbar", function(query, caseFold, options) {
    if (typeof options == "string") options = {className: options};
    if (!options) options = {};
    return new SearchAnnotation(this, query, caseFold, options);
  });

  function SearchAnnotation(cm, query, caseFold, options) {
    this.cm = cm;
    this.options = options;
    var annotateOptions = {listenForChanges: false};
    for (var prop in options) annotateOptions[prop] = options[prop];
    if (!annotateOptions.className) annotateOptions.className = "CodeMirror-search-match";
    this.annotation = cm.annotateScrollbar(annotateOptions);
    this.query = query;
    this.caseFold = caseFold;
    this.gap = {from: cm.firstLine(), to: cm.lastLine() + 1};
    this.matches = [];
    this.update = null;

    this.findMatches();
    this.annotation.update(this.matches);

    var self = this;
    cm.on("change", this.changeHandler = function(_cm, change) { self.onChange(change); });
  }

  var MAX_MATCHES = 1000;

  SearchAnnotation.prototype.findMatches = function() {
    if (!this.gap) return;
    for (var i = 0; i < this.matches.length; i++) {
      var match = this.matches[i];
      if (match.from.line >= this.gap.to) break;
      if (match.to.line >= this.gap.from) this.matches.splice(i--, 1);
    }
    var cursor = this.cm.getSearchCursor(this.query, CodeMirror.Pos(this.gap.from, 0), this.caseFold);
    var maxMatches = this.options && this.options.maxMatches || MAX_MATCHES;
    while (cursor.findNext()) {
      var match = {from: cursor.from(), to: cursor.to()};
      if (match.from.line >= this.gap.to) break;
      this.matches.splice(i++, 0, match);
      if (this.matches.length > maxMatches) break;
    }
    this.gap = null;
  };

  function offsetLine(line, changeStart, sizeChange) {
    if (line <= changeStart) return line;
    return Math.max(changeStart, line + sizeChange);
  }

  SearchAnnotation.prototype.onChange = function(change) {
    var startLine = change.from.line;
    var endLine = CodeMirror.changeEnd(change).line;
    var sizeChange = endLine - change.to.line;
    if (this.gap) {
      this.gap.from = Math.min(offsetLine(this.gap.from, startLine, sizeChange), change.from.line);
      this.gap.to = Math.max(offsetLine(this.gap.to, startLine, sizeChange), change.from.line);
    } else {
      this.gap = {from: change.from.line, to: endLine + 1};
    }

    if (sizeChange) for (var i = 0; i < this.matches.length; i++) {
      var match = this.matches[i];
      var newFrom = offsetLine(match.from.line, startLine, sizeChange);
      if (newFrom != match.from.line) match.from = CodeMirror.Pos(newFrom, match.from.ch);
      var newTo = offsetLine(match.to.line, startLine, sizeChange);
      if (newTo != match.to.line) match.to = CodeMirror.Pos(newTo, match.to.ch);
    }
    clearTimeout(this.update);
    var self = this;
    this.update = setTimeout(function() { self.updateAfterChange(); }, 250);
  };

  SearchAnnotation.prototype.updateAfterChange = function() {
    this.findMatches();
    this.annotation.update(this.matches);
  };

  SearchAnnotation.prototype.clear = function() {
    this.cm.off("change", this.changeHandler);
    this.annotation.clear();
  };
});


/***/ }),
/* 461 */
/*!*******************************************************************!*\
  !*** ./node_modules/codemirror/addon/search/match-highlighter.js ***!
  \*******************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Highlighting text that matches the selection
//
// Defines an option highlightSelectionMatches, which, when enabled,
// will style strings that match the selection throughout the
// document.
//
// The option can be set to true to simply enable it, or to a
// {minChars, style, wordsOnly, showToken, delay} object to explicitly
// configure it. minChars is the minimum amount of characters that should be
// selected for the behavior to occur, and style is the token style to
// apply to the matches. This will be prefixed by "cm-" to create an
// actual CSS class name. If wordsOnly is enabled, the matches will be
// highlighted only if the selected text is a word. showToken, when enabled,
// will cause the current token to be highlighted when nothing is selected.
// delay is used to specify how much time to wait, in milliseconds, before
// highlighting the matches. If annotateScrollbar is enabled, the occurences
// will be highlighted on the scrollbar via the matchesonscrollbar addon.

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43), __webpack_require__(/*! ./matchesonscrollbar */ 460));
  else {}
})(function(CodeMirror) {
  "use strict";

  var defaults = {
    style: "matchhighlight",
    minChars: 2,
    delay: 100,
    wordsOnly: false,
    annotateScrollbar: false,
    showToken: false,
    trim: true
  }

  function State(options) {
    this.options = {}
    for (var name in defaults)
      this.options[name] = (options && options.hasOwnProperty(name) ? options : defaults)[name]
    this.overlay = this.timeout = null;
    this.matchesonscroll = null;
    this.active = false;
  }

  CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      removeOverlay(cm);
      clearTimeout(cm.state.matchHighlighter.timeout);
      cm.state.matchHighlighter = null;
      cm.off("cursorActivity", cursorActivity);
      cm.off("focus", onFocus)
    }
    if (val) {
      var state = cm.state.matchHighlighter = new State(val);
      if (cm.hasFocus()) {
        state.active = true
        highlightMatches(cm)
      } else {
        cm.on("focus", onFocus)
      }
      cm.on("cursorActivity", cursorActivity);
    }
  });

  function cursorActivity(cm) {
    var state = cm.state.matchHighlighter;
    if (state.active || cm.hasFocus()) scheduleHighlight(cm, state)
  }

  function onFocus(cm) {
    var state = cm.state.matchHighlighter
    if (!state.active) {
      state.active = true
      scheduleHighlight(cm, state)
    }
  }

  function scheduleHighlight(cm, state) {
    clearTimeout(state.timeout);
    state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
  }

  function addOverlay(cm, query, hasBoundary, style) {
    var state = cm.state.matchHighlighter;
    cm.addOverlay(state.overlay = makeOverlay(query, hasBoundary, style));
    if (state.options.annotateScrollbar && cm.showMatchesOnScrollbar) {
      var searchFor = hasBoundary ? new RegExp("\\b" + query.replace(/[\\\[.+*?(){|^$]/g, "\\$&") + "\\b") : query;
      state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, false,
        {className: "CodeMirror-selection-highlight-scrollbar"});
    }
  }

  function removeOverlay(cm) {
    var state = cm.state.matchHighlighter;
    if (state.overlay) {
      cm.removeOverlay(state.overlay);
      state.overlay = null;
      if (state.matchesonscroll) {
        state.matchesonscroll.clear();
        state.matchesonscroll = null;
      }
    }
  }

  function highlightMatches(cm) {
    cm.operation(function() {
      var state = cm.state.matchHighlighter;
      removeOverlay(cm);
      if (!cm.somethingSelected() && state.options.showToken) {
        var re = state.options.showToken === true ? /[\w$]/ : state.options.showToken;
        var cur = cm.getCursor(), line = cm.getLine(cur.line), start = cur.ch, end = start;
        while (start && re.test(line.charAt(start - 1))) --start;
        while (end < line.length && re.test(line.charAt(end))) ++end;
        if (start < end)
          addOverlay(cm, line.slice(start, end), re, state.options.style);
        return;
      }
      var from = cm.getCursor("from"), to = cm.getCursor("to");
      if (from.line != to.line) return;
      if (state.options.wordsOnly && !isWord(cm, from, to)) return;
      var selection = cm.getRange(from, to)
      if (state.options.trim) selection = selection.replace(/^\s+|\s+$/g, "")
      if (selection.length >= state.options.minChars)
        addOverlay(cm, selection, false, state.options.style);
    });
  }

  function isWord(cm, from, to) {
    var str = cm.getRange(from, to);
    if (str.match(/^\w+$/) !== null) {
        if (from.ch > 0) {
            var pos = {line: from.line, ch: from.ch - 1};
            var chr = cm.getRange(pos, from);
            if (chr.match(/\W/) === null) return false;
        }
        if (to.ch < cm.getLine(from.line).length) {
            var pos = {line: to.line, ch: to.ch + 1};
            var chr = cm.getRange(to, pos);
            if (chr.match(/\W/) === null) return false;
        }
        return true;
    } else return false;
  }

  function boundariesAround(stream, re) {
    return (!stream.start || !re.test(stream.string.charAt(stream.start - 1))) &&
      (stream.pos == stream.string.length || !re.test(stream.string.charAt(stream.pos)));
  }

  function makeOverlay(query, hasBoundary, style) {
    return {token: function(stream) {
      if (stream.match(query) &&
          (!hasBoundary || boundariesAround(stream, hasBoundary)))
        return style;
      stream.next();
      stream.skipTo(query.charAt(0)) || stream.skipToEnd();
    }};
  }
});


/***/ }),
/* 462 */,
/* 463 */
/*!*****************************************************!*\
  !*** ./node_modules/codemirror/addon/lint/lint.css ***!
  \*****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 464 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/addon/lint/lint.js ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  "use strict";
  var GUTTER_ID = "CodeMirror-lint-markers";

  function showTooltip(e, content) {
    var tt = document.createElement("div");
    tt.className = "CodeMirror-lint-tooltip";
    tt.appendChild(content.cloneNode(true));
    document.body.appendChild(tt);

    function position(e) {
      if (!tt.parentNode) return CodeMirror.off(document, "mousemove", position);
      tt.style.top = Math.max(0, e.clientY - tt.offsetHeight - 5) + "px";
      tt.style.left = (e.clientX + 5) + "px";
    }
    CodeMirror.on(document, "mousemove", position);
    position(e);
    if (tt.style.opacity != null) tt.style.opacity = 1;
    return tt;
  }
  function rm(elt) {
    if (elt.parentNode) elt.parentNode.removeChild(elt);
  }
  function hideTooltip(tt) {
    if (!tt.parentNode) return;
    if (tt.style.opacity == null) rm(tt);
    tt.style.opacity = 0;
    setTimeout(function() { rm(tt); }, 600);
  }

  function showTooltipFor(e, content, node) {
    var tooltip = showTooltip(e, content);
    function hide() {
      CodeMirror.off(node, "mouseout", hide);
      if (tooltip) { hideTooltip(tooltip); tooltip = null; }
    }
    var poll = setInterval(function() {
      if (tooltip) for (var n = node;; n = n.parentNode) {
        if (n && n.nodeType == 11) n = n.host;
        if (n == document.body) return;
        if (!n) { hide(); break; }
      }
      if (!tooltip) return clearInterval(poll);
    }, 400);
    CodeMirror.on(node, "mouseout", hide);
  }

  function LintState(cm, options, hasGutter) {
    this.marked = [];
    this.options = options;
    this.timeout = null;
    this.hasGutter = hasGutter;
    this.onMouseOver = function(e) { onMouseOver(cm, e); };
    this.waitingFor = 0
  }

  function parseOptions(_cm, options) {
    if (options instanceof Function) return {getAnnotations: options};
    if (!options || options === true) options = {};
    return options;
  }

  function clearMarks(cm) {
    var state = cm.state.lint;
    if (state.hasGutter) cm.clearGutter(GUTTER_ID);
    for (var i = 0; i < state.marked.length; ++i)
      state.marked[i].clear();
    state.marked.length = 0;
  }

  function makeMarker(labels, severity, multiple, tooltips) {
    var marker = document.createElement("div"), inner = marker;
    marker.className = "CodeMirror-lint-marker-" + severity;
    if (multiple) {
      inner = marker.appendChild(document.createElement("div"));
      inner.className = "CodeMirror-lint-marker-multiple";
    }

    if (tooltips != false) CodeMirror.on(inner, "mouseover", function(e) {
      showTooltipFor(e, labels, inner);
    });

    return marker;
  }

  function getMaxSeverity(a, b) {
    if (a == "error") return a;
    else return b;
  }

  function groupByLine(annotations) {
    var lines = [];
    for (var i = 0; i < annotations.length; ++i) {
      var ann = annotations[i], line = ann.from.line;
      (lines[line] || (lines[line] = [])).push(ann);
    }
    return lines;
  }

  function annotationTooltip(ann) {
    var severity = ann.severity;
    if (!severity) severity = "error";
    var tip = document.createElement("div");
    tip.className = "CodeMirror-lint-message-" + severity;
    if (typeof ann.messageHTML != 'undefined') {
        tip.innerHTML = ann.messageHTML;
    } else {
        tip.appendChild(document.createTextNode(ann.message));
    }
    return tip;
  }

  function lintAsync(cm, getAnnotations, passOptions) {
    var state = cm.state.lint
    var id = ++state.waitingFor
    function abort() {
      id = -1
      cm.off("change", abort)
    }
    cm.on("change", abort)
    getAnnotations(cm.getValue(), function(annotations, arg2) {
      cm.off("change", abort)
      if (state.waitingFor != id) return
      if (arg2 && annotations instanceof CodeMirror) annotations = arg2
      cm.operation(function() {updateLinting(cm, annotations)})
    }, passOptions, cm);
  }

  function startLinting(cm) {
    var state = cm.state.lint, options = state.options;
    /*
     * Passing rules in `options` property prevents JSHint (and other linters) from complaining
     * about unrecognized rules like `onUpdateLinting`, `delay`, `lintOnChange`, etc.
     */
    var passOptions = options.options || options;
    var getAnnotations = options.getAnnotations || cm.getHelper(CodeMirror.Pos(0, 0), "lint");
    if (!getAnnotations) return;
    if (options.async || getAnnotations.async) {
      lintAsync(cm, getAnnotations, passOptions)
    } else {
      var annotations = getAnnotations(cm.getValue(), passOptions, cm);
      if (!annotations) return;
      if (annotations.then) annotations.then(function(issues) {
        cm.operation(function() {updateLinting(cm, issues)})
      });
      else cm.operation(function() {updateLinting(cm, annotations)})
    }
  }

  function updateLinting(cm, annotationsNotSorted) {
    clearMarks(cm);
    var state = cm.state.lint, options = state.options;

    var annotations = groupByLine(annotationsNotSorted);

    for (var line = 0; line < annotations.length; ++line) {
      var anns = annotations[line];
      if (!anns) continue;

      var maxSeverity = null;
      var tipLabel = state.hasGutter && document.createDocumentFragment();

      for (var i = 0; i < anns.length; ++i) {
        var ann = anns[i];
        var severity = ann.severity;
        if (!severity) severity = "error";
        maxSeverity = getMaxSeverity(maxSeverity, severity);

        if (options.formatAnnotation) ann = options.formatAnnotation(ann);
        if (state.hasGutter) tipLabel.appendChild(annotationTooltip(ann));

        if (ann.to) state.marked.push(cm.markText(ann.from, ann.to, {
          className: "CodeMirror-lint-mark-" + severity,
          __annotation: ann
        }));
      }

      if (state.hasGutter)
        cm.setGutterMarker(line, GUTTER_ID, makeMarker(tipLabel, maxSeverity, anns.length > 1,
                                                       state.options.tooltips));
    }
    if (options.onUpdateLinting) options.onUpdateLinting(annotationsNotSorted, annotations, cm);
  }

  function onChange(cm) {
    var state = cm.state.lint;
    if (!state) return;
    clearTimeout(state.timeout);
    state.timeout = setTimeout(function(){startLinting(cm);}, state.options.delay || 500);
  }

  function popupTooltips(annotations, e) {
    var target = e.target || e.srcElement;
    var tooltip = document.createDocumentFragment();
    for (var i = 0; i < annotations.length; i++) {
      var ann = annotations[i];
      tooltip.appendChild(annotationTooltip(ann));
    }
    showTooltipFor(e, tooltip, target);
  }

  function onMouseOver(cm, e) {
    var target = e.target || e.srcElement;
    if (!/\bCodeMirror-lint-mark-/.test(target.className)) return;
    var box = target.getBoundingClientRect(), x = (box.left + box.right) / 2, y = (box.top + box.bottom) / 2;
    var spans = cm.findMarksAt(cm.coordsChar({left: x, top: y}, "client"));

    var annotations = [];
    for (var i = 0; i < spans.length; ++i) {
      var ann = spans[i].__annotation;
      if (ann) annotations.push(ann);
    }
    if (annotations.length) popupTooltips(annotations, e);
  }

  CodeMirror.defineOption("lint", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      clearMarks(cm);
      if (cm.state.lint.options.lintOnChange !== false)
        cm.off("change", onChange);
      CodeMirror.off(cm.getWrapperElement(), "mouseover", cm.state.lint.onMouseOver);
      clearTimeout(cm.state.lint.timeout);
      delete cm.state.lint;
    }

    if (val) {
      var gutters = cm.getOption("gutters"), hasLintGutter = false;
      for (var i = 0; i < gutters.length; ++i) if (gutters[i] == GUTTER_ID) hasLintGutter = true;
      var state = cm.state.lint = new LintState(cm, parseOptions(cm, val), hasLintGutter);
      if (state.options.lintOnChange !== false)
        cm.on("change", onChange);
      if (state.options.tooltips != false && state.options.tooltips != "gutter")
        CodeMirror.on(cm.getWrapperElement(), "mouseover", state.onMouseOver);

      startLinting(cm);
    }
  });

  CodeMirror.defineExtension("performLint", function() {
    if (this.state.lint) startLinting(this);
  });
});


/***/ }),
/* 465 */,
/* 466 */
/*!**********************************************************!*\
  !*** ./node_modules/codemirror/addon/hint/show-hint.css ***!
  \**********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 467 */
/*!*********************************************************!*\
  !*** ./node_modules/codemirror/addon/hint/show-hint.js ***!
  \*********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

var mac = /Mac/.test(navigator.platform);

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  "use strict";

  var HINT_ELEMENT_CLASS        = "CodeMirror-hint";
  var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";

  // This is the old interface, kept around for now to stay
  // backwards-compatible.
  CodeMirror.showHint = function(cm, getHints, options) {
    if (!getHints) return cm.showHint(options);
    if (options && options.async) getHints.async = true;
    var newOpts = {hint: getHints};
    if (options) for (var prop in options) newOpts[prop] = options[prop];
    return cm.showHint(newOpts);
  };

  CodeMirror.defineExtension("showHint", function(options) {
    options = parseOptions(this, this.getCursor("start"), options);
    var selections = this.listSelections()
    if (selections.length > 1) return;
    // By default, don't allow completion when something is selected.
    // A hint function can have a `supportsSelection` property to
    // indicate that it can handle selections.
    if (this.somethingSelected()) {
      if (!options.hint.supportsSelection) return;
      // Don't try with cross-line selections
      for (var i = 0; i < selections.length; i++)
        if (selections[i].head.line != selections[i].anchor.line) return;
    }

    if (this.state.completionActive) this.state.completionActive.close();
    var completion = this.state.completionActive = new Completion(this, options);
    if (!completion.options.hint) return;

    CodeMirror.signal(this, "startCompletion", this);
    completion.update(true);
  });

  CodeMirror.defineExtension("closeHint", function() {
    if (this.state.completionActive) this.state.completionActive.close()
  })

  function Completion(cm, options) {
    this.cm = cm;
    this.options = options;
    this.widget = null;
    this.debounce = 0;
    this.tick = 0;
    this.startPos = this.cm.getCursor("start");
    this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length;

    var self = this;
    cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); });
  }

  var requestAnimationFrame = window.requestAnimationFrame || function(fn) {
    return setTimeout(fn, 1000/60);
  };
  var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;

  Completion.prototype = {
    close: function() {
      if (!this.active()) return;
      this.cm.state.completionActive = null;
      this.tick = null;
      this.cm.off("cursorActivity", this.activityFunc);

      if (this.widget && this.data) CodeMirror.signal(this.data, "close");
      if (this.widget) this.widget.close();
      CodeMirror.signal(this.cm, "endCompletion", this.cm);
    },

    active: function() {
      return this.cm.state.completionActive == this;
    },

    pick: function(data, i) {
      var completion = data.list[i];
      if (completion.hint) completion.hint(this.cm, data, completion);
      else this.cm.replaceRange(getText(completion), completion.from || data.from,
                                completion.to || data.to, "complete");
      CodeMirror.signal(data, "pick", completion);
      this.close();
    },

    cursorActivity: function() {
      if (this.debounce) {
        cancelAnimationFrame(this.debounce);
        this.debounce = 0;
      }

      var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);
      if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
          pos.ch < this.startPos.ch || this.cm.somethingSelected() ||
          (!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
        this.close();
      } else {
        var self = this;
        this.debounce = requestAnimationFrame(function() {self.update();});
        if (this.widget) this.widget.disable();
      }
    },

    update: function(first) {
      if (this.tick == null) return
      var self = this, myTick = ++this.tick
      fetchHints(this.options.hint, this.cm, this.options, function(data) {
        if (self.tick == myTick) self.finishUpdate(data, first)
      })
    },

    finishUpdate: function(data, first) {
      if (this.data) CodeMirror.signal(this.data, "update");

      var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);
      if (this.widget) this.widget.close();

      this.data = data;

      if (data && data.list.length) {
        if (picked && data.list.length == 1) {
          this.pick(data, 0);
        } else {
          this.widget = new Widget(this, data);
          CodeMirror.signal(data, "shown");
        }
      }
    }
  };

  function parseOptions(cm, pos, options) {
    var editor = cm.options.hintOptions;
    var out = {};
    for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
    if (editor) for (var prop in editor)
      if (editor[prop] !== undefined) out[prop] = editor[prop];
    if (options) for (var prop in options)
      if (options[prop] !== undefined) out[prop] = options[prop];
    if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos)
    return out;
  }

  function getText(completion) {
    if (typeof completion == "string") return completion;
    else return completion.text;
  }

  function buildKeyMap(completion, handle) {
    var baseMap = {
      Up: function() {handle.moveFocus(-1);},
      Down: function() {handle.moveFocus(1);},
      PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);},
      PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);},
      Home: function() {handle.setFocus(0);},
      End: function() {handle.setFocus(handle.length - 1);},
      Enter: handle.pick,
      Tab: handle.pick,
      Esc: handle.close
    };

    if (mac) {
      baseMap["Ctrl-P"] = function() {handle.moveFocus(-1);};
      baseMap["Ctrl-N"] = function() {handle.moveFocus(1);};
    }

    var custom = completion.options.customKeys;
    var ourMap = custom ? {} : baseMap;
    function addBinding(key, val) {
      var bound;
      if (typeof val != "string")
        bound = function(cm) { return val(cm, handle); };
      // This mechanism is deprecated
      else if (baseMap.hasOwnProperty(val))
        bound = baseMap[val];
      else
        bound = val;
      ourMap[key] = bound;
    }
    if (custom)
      for (var key in custom) if (custom.hasOwnProperty(key))
        addBinding(key, custom[key]);
    var extra = completion.options.extraKeys;
    if (extra)
      for (var key in extra) if (extra.hasOwnProperty(key))
        addBinding(key, extra[key]);
    return ourMap;
  }

  function getHintElement(hintsElement, el) {
    while (el && el != hintsElement) {
      if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
      el = el.parentNode;
    }
  }

  function Widget(completion, data) {
    this.completion = completion;
    this.data = data;
    this.picked = false;
    var widget = this, cm = completion.cm;
    var ownerDocument = cm.getInputField().ownerDocument;
    var parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow;

    var hints = this.hints = ownerDocument.createElement("ul");
    var theme = completion.cm.options.theme;
    hints.className = "CodeMirror-hints " + theme;
    this.selectedHint = data.selectedHint || 0;

    var completions = data.list;
    for (var i = 0; i < completions.length; ++i) {
      var elt = hints.appendChild(ownerDocument.createElement("li")), cur = completions[i];
      var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
      if (cur.className != null) className = cur.className + " " + className;
      elt.className = className;
      if (cur.render) cur.render(elt, data, cur);
      else elt.appendChild(ownerDocument.createTextNode(cur.displayText || getText(cur)));
      elt.hintId = i;
    }

    var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
    var left = pos.left, top = pos.bottom, below = true;
    hints.style.left = left + "px";
    hints.style.top = top + "px";
    // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
    var winW = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth);
    var winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight);
    (completion.options.container || ownerDocument.body).appendChild(hints);
    var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
    var scrolls = hints.scrollHeight > hints.clientHeight + 1
    var startScroll = cm.getScrollInfo();

    if (overlapY > 0) {
      var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
      if (curTop - height > 0) { // Fits above cursor
        hints.style.top = (top = pos.top - height) + "px";
        below = false;
      } else if (height > winH) {
        hints.style.height = (winH - 5) + "px";
        hints.style.top = (top = pos.bottom - box.top) + "px";
        var cursor = cm.getCursor();
        if (data.from.ch != cursor.ch) {
          pos = cm.cursorCoords(cursor);
          hints.style.left = (left = pos.left) + "px";
          box = hints.getBoundingClientRect();
        }
      }
    }
    var overlapX = box.right - winW;
    if (overlapX > 0) {
      if (box.right - box.left > winW) {
        hints.style.width = (winW - 5) + "px";
        overlapX -= (box.right - box.left) - winW;
      }
      hints.style.left = (left = pos.left - overlapX) + "px";
    }
    if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling)
      node.style.paddingRight = cm.display.nativeBarWidth + "px"

    cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
      moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); },
      setFocus: function(n) { widget.changeActive(n); },
      menuSize: function() { return widget.screenAmount(); },
      length: completions.length,
      close: function() { completion.close(); },
      pick: function() { widget.pick(); },
      data: data
    }));

    if (completion.options.closeOnUnfocus) {
      var closingOnBlur;
      cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); });
      cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); });
    }

    cm.on("scroll", this.onScroll = function() {
      var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
      var newTop = top + startScroll.top - curScroll.top;
      var point = newTop - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.body).scrollTop);
      if (!below) point += hints.offsetHeight;
      if (point <= editor.top || point >= editor.bottom) return completion.close();
      hints.style.top = newTop + "px";
      hints.style.left = (left + startScroll.left - curScroll.left) + "px";
    });

    CodeMirror.on(hints, "dblclick", function(e) {
      var t = getHintElement(hints, e.target || e.srcElement);
      if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();}
    });

    CodeMirror.on(hints, "click", function(e) {
      var t = getHintElement(hints, e.target || e.srcElement);
      if (t && t.hintId != null) {
        widget.changeActive(t.hintId);
        if (completion.options.completeOnSingleClick) widget.pick();
      }
    });

    CodeMirror.on(hints, "mousedown", function() {
      setTimeout(function(){cm.focus();}, 20);
    });

    CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]);
    return true;
  }

  Widget.prototype = {
    close: function() {
      if (this.completion.widget != this) return;
      this.completion.widget = null;
      this.hints.parentNode.removeChild(this.hints);
      this.completion.cm.removeKeyMap(this.keyMap);

      var cm = this.completion.cm;
      if (this.completion.options.closeOnUnfocus) {
        cm.off("blur", this.onBlur);
        cm.off("focus", this.onFocus);
      }
      cm.off("scroll", this.onScroll);
    },

    disable: function() {
      this.completion.cm.removeKeyMap(this.keyMap);
      var widget = this;
      this.keyMap = {Enter: function() { widget.picked = true; }};
      this.completion.cm.addKeyMap(this.keyMap);
    },

    pick: function() {
      this.completion.pick(this.data, this.selectedHint);
    },

    changeActive: function(i, avoidWrap) {
      if (i >= this.data.list.length)
        i = avoidWrap ? this.data.list.length - 1 : 0;
      else if (i < 0)
        i = avoidWrap ? 0  : this.data.list.length - 1;
      if (this.selectedHint == i) return;
      var node = this.hints.childNodes[this.selectedHint];
      if (node) node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
      node = this.hints.childNodes[this.selectedHint = i];
      node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
      if (node.offsetTop < this.hints.scrollTop)
        this.hints.scrollTop = node.offsetTop - 3;
      else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
        this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
      CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
    },

    screenAmount: function() {
      return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
    }
  };

  function applicableHelpers(cm, helpers) {
    if (!cm.somethingSelected()) return helpers
    var result = []
    for (var i = 0; i < helpers.length; i++)
      if (helpers[i].supportsSelection) result.push(helpers[i])
    return result
  }

  function fetchHints(hint, cm, options, callback) {
    if (hint.async) {
      hint(cm, callback, options)
    } else {
      var result = hint(cm, options)
      if (result && result.then) result.then(callback)
      else callback(result)
    }
  }

  function resolveAutoHints(cm, pos) {
    var helpers = cm.getHelpers(pos, "hint"), words
    if (helpers.length) {
      var resolved = function(cm, callback, options) {
        var app = applicableHelpers(cm, helpers);
        function run(i) {
          if (i == app.length) return callback(null)
          fetchHints(app[i], cm, options, function(result) {
            if (result && result.list.length > 0) callback(result)
            else run(i + 1)
          })
        }
        run(0)
      }
      resolved.async = true
      resolved.supportsSelection = true
      return resolved
    } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
      return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) }
    } else if (CodeMirror.hint.anyword) {
      return function(cm, options) { return CodeMirror.hint.anyword(cm, options) }
    } else {
      return function() {}
    }
  }

  CodeMirror.registerHelper("hint", "auto", {
    resolve: resolveAutoHints
  });

  CodeMirror.registerHelper("hint", "fromList", function(cm, options) {
    var cur = cm.getCursor(), token = cm.getTokenAt(cur)
    var term, from = CodeMirror.Pos(cur.line, token.start), to = cur
    if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) {
      term = token.string.substr(0, cur.ch - token.start)
    } else {
      term = ""
      from = cur
    }
    var found = [];
    for (var i = 0; i < options.words.length; i++) {
      var word = options.words[i];
      if (word.slice(0, term.length) == term)
        found.push(word);
    }

    if (found.length) return {list: found, from: from, to: to};
  });

  CodeMirror.commands.autocomplete = CodeMirror.showHint;

  var defaultOptions = {
    hint: CodeMirror.hint.auto,
    completeSingle: true,
    alignWithWord: true,
    closeCharacters: /[\s()\[\]{};:>,]/,
    closeOnUnfocus: true,
    completeOnSingleClick: true,
    container: null,
    customKeys: null,
    extraKeys: null
  };

  CodeMirror.defineOption("hintOptions", null);
});


/***/ }),
/* 468 */
/*!***************************************************************!*\
  !*** ./node_modules/codemirror/addon/hint/javascript-hint.js ***!
  \***************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  var Pos = CodeMirror.Pos;

  function forEach(arr, f) {
    for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
  }

  function arrayContains(arr, item) {
    if (!Array.prototype.indexOf) {
      var i = arr.length;
      while (i--) {
        if (arr[i] === item) {
          return true;
        }
      }
      return false;
    }
    return arr.indexOf(item) != -1;
  }

  function scriptHint(editor, keywords, getToken, options) {
    // Find the token at the cursor
    var cur = editor.getCursor(), token = getToken(editor, cur);
    if (/\b(?:string|comment)\b/.test(token.type)) return;
    var innerMode = CodeMirror.innerMode(editor.getMode(), token.state);
    if (innerMode.mode.helperType === "json") return;
    token.state = innerMode.state;

    // If it's not a 'word-style' token, ignore the token.
    if (!/^[\w$_]*$/.test(token.string)) {
      token = {start: cur.ch, end: cur.ch, string: "", state: token.state,
               type: token.string == "." ? "property" : null};
    } else if (token.end > cur.ch) {
      token.end = cur.ch;
      token.string = token.string.slice(0, cur.ch - token.start);
    }

    var tprop = token;
    // If it is a property, find out what it is a property of.
    while (tprop.type == "property") {
      tprop = getToken(editor, Pos(cur.line, tprop.start));
      if (tprop.string != ".") return;
      tprop = getToken(editor, Pos(cur.line, tprop.start));
      if (!context) var context = [];
      context.push(tprop);
    }
    return {list: getCompletions(token, context, keywords, options),
            from: Pos(cur.line, token.start),
            to: Pos(cur.line, token.end)};
  }

  function javascriptHint(editor, options) {
    return scriptHint(editor, javascriptKeywords,
                      function (e, cur) {return e.getTokenAt(cur);},
                      options);
  };
  CodeMirror.registerHelper("hint", "javascript", javascriptHint);

  function getCoffeeScriptToken(editor, cur) {
  // This getToken, it is for coffeescript, imitates the behavior of
  // getTokenAt method in javascript.js, that is, returning "property"
  // type and treat "." as indepenent token.
    var token = editor.getTokenAt(cur);
    if (cur.ch == token.start + 1 && token.string.charAt(0) == '.') {
      token.end = token.start;
      token.string = '.';
      token.type = "property";
    }
    else if (/^\.[\w$_]*$/.test(token.string)) {
      token.type = "property";
      token.start++;
      token.string = token.string.replace(/\./, '');
    }
    return token;
  }

  function coffeescriptHint(editor, options) {
    return scriptHint(editor, coffeescriptKeywords, getCoffeeScriptToken, options);
  }
  CodeMirror.registerHelper("hint", "coffeescript", coffeescriptHint);

  var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " +
                     "toUpperCase toLowerCase split concat match replace search").split(" ");
  var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " +
                    "lastIndexOf every some filter forEach map reduce reduceRight ").split(" ");
  var funcProps = "prototype apply call bind".split(" ");
  var javascriptKeywords = ("break case catch class const continue debugger default delete do else export extends false finally for function " +
                  "if in import instanceof new null return super switch this throw true try typeof var void while with yield").split(" ");
  var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
                  "if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes").split(" ");

  function forAllProps(obj, callback) {
    if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) {
      for (var name in obj) callback(name)
    } else {
      for (var o = obj; o; o = Object.getPrototypeOf(o))
        Object.getOwnPropertyNames(o).forEach(callback)
    }
  }

  function getCompletions(token, context, keywords, options) {
    var found = [], start = token.string, global = options && options.globalScope || window;
    function maybeAdd(str) {
      if (str.lastIndexOf(start, 0) == 0 && !arrayContains(found, str)) found.push(str);
    }
    function gatherCompletions(obj) {
      if (typeof obj == "string") forEach(stringProps, maybeAdd);
      else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
      else if (obj instanceof Function) forEach(funcProps, maybeAdd);
      forAllProps(obj, maybeAdd)
    }

    if (context && context.length) {
      // If this is a property, see if it belongs to some object we can
      // find in the current environment.
      var obj = context.pop(), base;
      if (obj.type && obj.type.indexOf("variable") === 0) {
        if (options && options.additionalContext)
          base = options.additionalContext[obj.string];
        if (!options || options.useGlobalScope !== false)
          base = base || global[obj.string];
      } else if (obj.type == "string") {
        base = "";
      } else if (obj.type == "atom") {
        base = 1;
      } else if (obj.type == "function") {
        if (global.jQuery != null && (obj.string == '$' || obj.string == 'jQuery') &&
            (typeof global.jQuery == 'function'))
          base = global.jQuery();
        else if (global._ != null && (obj.string == '_') && (typeof global._ == 'function'))
          base = global._();
      }
      while (base != null && context.length)
        base = base[context.pop().string];
      if (base != null) gatherCompletions(base);
    } else {
      // If not, just look in the global object and any local scope
      // (reading into JS mode internals to get at the local and global variables)
      for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name);
      for (var v = token.state.globalVars; v; v = v.next) maybeAdd(v.name);
      if (!options || options.useGlobalScope !== false)
        gatherCompletions(global);
      forEach(keywords, maybeAdd);
    }
    return found;
  }
});


/***/ }),
/* 469 */
/*!************************************************************!*\
  !*** ./node_modules/codemirror/addon/fold/comment-fold.js ***!
  \************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
"use strict";

CodeMirror.registerGlobalHelper("fold", "comment", function(mode) {
  return mode.blockCommentStart && mode.blockCommentEnd;
}, function(cm, start) {
  var mode = cm.getModeAt(start), startToken = mode.blockCommentStart, endToken = mode.blockCommentEnd;
  if (!startToken || !endToken) return;
  var line = start.line, lineText = cm.getLine(line);

  var startCh;
  for (var at = start.ch, pass = 0;;) {
    var found = at <= 0 ? -1 : lineText.lastIndexOf(startToken, at - 1);
    if (found == -1) {
      if (pass == 1) return;
      pass = 1;
      at = lineText.length;
      continue;
    }
    if (pass == 1 && found < start.ch) return;
    if (/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1))) &&
        (found == 0 || lineText.slice(found - endToken.length, found) == endToken ||
         !/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found))))) {
      startCh = found + startToken.length;
      break;
    }
    at = found - 1;
  }

  var depth = 1, lastLine = cm.lastLine(), end, endCh;
  outer: for (var i = line; i <= lastLine; ++i) {
    var text = cm.getLine(i), pos = i == line ? startCh : 0;
    for (;;) {
      var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
      if (nextOpen < 0) nextOpen = text.length;
      if (nextClose < 0) nextClose = text.length;
      pos = Math.min(nextOpen, nextClose);
      if (pos == text.length) break;
      if (pos == nextOpen) ++depth;
      else if (!--depth) { end = i; endCh = pos; break outer; }
      ++pos;
    }
  }
  if (end == null || line == end && endCh == startCh) return;
  return {from: CodeMirror.Pos(line, startCh),
          to: CodeMirror.Pos(end, endCh)};
});

});


/***/ }),
/* 470 */
/*!***********************************************************!*\
  !*** ./node_modules/codemirror/addon/fold/indent-fold.js ***!
  \***********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
"use strict";

function lineIndent(cm, lineNo) {
  var text = cm.getLine(lineNo)
  var spaceTo = text.search(/\S/)
  if (spaceTo == -1 || /\bcomment\b/.test(cm.getTokenTypeAt(CodeMirror.Pos(lineNo, spaceTo + 1))))
    return -1
  return CodeMirror.countColumn(text, null, cm.getOption("tabSize"))
}

CodeMirror.registerHelper("fold", "indent", function(cm, start) {
  var myIndent = lineIndent(cm, start.line)
  if (myIndent < 0) return
  var lastLineInFold = null

  // Go through lines until we find a line that definitely doesn't belong in
  // the block we're folding, or to the end.
  for (var i = start.line + 1, end = cm.lastLine(); i <= end; ++i) {
    var indent = lineIndent(cm, i)
    if (indent == -1) {
    } else if (indent > myIndent) {
      // Lines with a greater indent are considered part of the block.
      lastLineInFold = i;
    } else {
      // If this line has non-space, non-comment content, and is
      // indented less or equal to the start line, it is the start of
      // another block.
      break;
    }
  }
  if (lastLineInFold) return {
    from: CodeMirror.Pos(start.line, cm.getLine(start.line).length),
    to: CodeMirror.Pos(lastLineInFold, cm.getLine(lastLineInFold).length)
  };
});

});


/***/ }),
/* 471 */
/*!**********************************************************!*\
  !*** ./node_modules/codemirror/addon/fold/brace-fold.js ***!
  \**********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
"use strict";

CodeMirror.registerHelper("fold", "brace", function(cm, start) {
  var line = start.line, lineText = cm.getLine(line);
  var tokenType;

  function findOpening(openCh) {
    for (var at = start.ch, pass = 0;;) {
      var found = at <= 0 ? -1 : lineText.lastIndexOf(openCh, at - 1);
      if (found == -1) {
        if (pass == 1) break;
        pass = 1;
        at = lineText.length;
        continue;
      }
      if (pass == 1 && found < start.ch) break;
      tokenType = cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1));
      if (!/^(comment|string)/.test(tokenType)) return found + 1;
      at = found - 1;
    }
  }

  var startToken = "{", endToken = "}", startCh = findOpening("{");
  if (startCh == null) {
    startToken = "[", endToken = "]";
    startCh = findOpening("[");
  }

  if (startCh == null) return;
  var count = 1, lastLine = cm.lastLine(), end, endCh;
  outer: for (var i = line; i <= lastLine; ++i) {
    var text = cm.getLine(i), pos = i == line ? startCh : 0;
    for (;;) {
      var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
      if (nextOpen < 0) nextOpen = text.length;
      if (nextClose < 0) nextClose = text.length;
      pos = Math.min(nextOpen, nextClose);
      if (pos == text.length) break;
      if (cm.getTokenTypeAt(CodeMirror.Pos(i, pos + 1)) == tokenType) {
        if (pos == nextOpen) ++count;
        else if (!--count) { end = i; endCh = pos; break outer; }
      }
      ++pos;
    }
  }
  if (end == null || line == end) return;
  return {from: CodeMirror.Pos(line, startCh),
          to: CodeMirror.Pos(end, endCh)};
});

CodeMirror.registerHelper("fold", "import", function(cm, start) {
  function hasImport(line) {
    if (line < cm.firstLine() || line > cm.lastLine()) return null;
    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
    if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
    if (start.type != "keyword" || start.string != "import") return null;
    // Now find closing semicolon, return its position
    for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {
      var text = cm.getLine(i), semi = text.indexOf(";");
      if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};
    }
  }

  var startLine = start.line, has = hasImport(startLine), prev;
  if (!has || hasImport(startLine - 1) || ((prev = hasImport(startLine - 2)) && prev.end.line == startLine - 1))
    return null;
  for (var end = has.end;;) {
    var next = hasImport(end.line + 1);
    if (next == null) break;
    end = next.end;
  }
  return {from: cm.clipPos(CodeMirror.Pos(startLine, has.startCh + 1)), to: end};
});

CodeMirror.registerHelper("fold", "include", function(cm, start) {
  function hasInclude(line) {
    if (line < cm.firstLine() || line > cm.lastLine()) return null;
    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
    if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
    if (start.type == "meta" && start.string.slice(0, 8) == "#include") return start.start + 8;
  }

  var startLine = start.line, has = hasInclude(startLine);
  if (has == null || hasInclude(startLine - 1) != null) return null;
  for (var end = startLine;;) {
    var next = hasInclude(end + 1);
    if (next == null) break;
    ++end;
  }
  return {from: CodeMirror.Pos(startLine, has + 1),
          to: cm.clipPos(CodeMirror.Pos(end))};
});

});


/***/ }),
/* 472 */,
/* 473 */
/*!***********************************************************!*\
  !*** ./node_modules/codemirror/addon/fold/foldgutter.css ***!
  \***********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 474 */
/*!**********************************************************!*\
  !*** ./node_modules/codemirror/addon/fold/foldgutter.js ***!
  \**********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43), __webpack_require__(/*! ./foldcode */ 240));
  else {}
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineOption("foldGutter", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      cm.clearGutter(cm.state.foldGutter.options.gutter);
      cm.state.foldGutter = null;
      cm.off("gutterClick", onGutterClick);
      cm.off("change", onChange);
      cm.off("viewportChange", onViewportChange);
      cm.off("fold", onFold);
      cm.off("unfold", onFold);
      cm.off("swapDoc", onChange);
    }
    if (val) {
      cm.state.foldGutter = new State(parseOptions(val));
      updateInViewport(cm);
      cm.on("gutterClick", onGutterClick);
      cm.on("change", onChange);
      cm.on("viewportChange", onViewportChange);
      cm.on("fold", onFold);
      cm.on("unfold", onFold);
      cm.on("swapDoc", onChange);
    }
  });

  var Pos = CodeMirror.Pos;

  function State(options) {
    this.options = options;
    this.from = this.to = 0;
  }

  function parseOptions(opts) {
    if (opts === true) opts = {};
    if (opts.gutter == null) opts.gutter = "CodeMirror-foldgutter";
    if (opts.indicatorOpen == null) opts.indicatorOpen = "CodeMirror-foldgutter-open";
    if (opts.indicatorFolded == null) opts.indicatorFolded = "CodeMirror-foldgutter-folded";
    return opts;
  }

  function isFolded(cm, line) {
    var marks = cm.findMarks(Pos(line, 0), Pos(line + 1, 0));
    for (var i = 0; i < marks.length; ++i)
      if (marks[i].__isFold && marks[i].find().from.line == line) return marks[i];
  }

  function marker(spec) {
    if (typeof spec == "string") {
      var elt = document.createElement("div");
      elt.className = spec + " CodeMirror-guttermarker-subtle";
      return elt;
    } else {
      return spec.cloneNode(true);
    }
  }

  function updateFoldInfo(cm, from, to) {
    var opts = cm.state.foldGutter.options, cur = from;
    var minSize = cm.foldOption(opts, "minFoldSize");
    var func = cm.foldOption(opts, "rangeFinder");
    cm.eachLine(from, to, function(line) {
      var mark = null;
      if (isFolded(cm, cur)) {
        mark = marker(opts.indicatorFolded);
      } else {
        var pos = Pos(cur, 0);
        var range = func && func(cm, pos);
        if (range && range.to.line - range.from.line >= minSize)
          mark = marker(opts.indicatorOpen);
      }
      cm.setGutterMarker(line, opts.gutter, mark);
      ++cur;
    });
  }

  function updateInViewport(cm) {
    var vp = cm.getViewport(), state = cm.state.foldGutter;
    if (!state) return;
    cm.operation(function() {
      updateFoldInfo(cm, vp.from, vp.to);
    });
    state.from = vp.from; state.to = vp.to;
  }

  function onGutterClick(cm, line, gutter) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var opts = state.options;
    if (gutter != opts.gutter) return;
    var folded = isFolded(cm, line);
    if (folded) folded.clear();
    else cm.foldCode(Pos(line, 0), opts.rangeFinder);
  }

  function onChange(cm) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var opts = state.options;
    state.from = state.to = 0;
    clearTimeout(state.changeUpdate);
    state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);
  }

  function onViewportChange(cm) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var opts = state.options;
    clearTimeout(state.changeUpdate);
    state.changeUpdate = setTimeout(function() {
      var vp = cm.getViewport();
      if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
        updateInViewport(cm);
      } else {
        cm.operation(function() {
          if (vp.from < state.from) {
            updateFoldInfo(cm, vp.from, state.from);
            state.from = vp.from;
          }
          if (vp.to > state.to) {
            updateFoldInfo(cm, state.to, vp.to);
            state.to = vp.to;
          }
        });
      }
    }, opts.updateViewportTimeSpan || 400);
  }

  function onFold(cm, from) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var line = from.line;
    if (line >= state.from && line < state.to)
      updateFoldInfo(cm, line, line + 1);
  }
});


/***/ }),
/* 475 */
/*!*************************************************************!*\
  !*** ./node_modules/codemirror/addon/edit/closebrackets.js ***!
  \*************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  var defaults = {
    pairs: "()[]{}''\"\"",
    triples: "",
    explode: "[]{}"
  };

  var Pos = CodeMirror.Pos;

  CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      cm.removeKeyMap(keyMap);
      cm.state.closeBrackets = null;
    }
    if (val) {
      ensureBound(getOption(val, "pairs"))
      cm.state.closeBrackets = val;
      cm.addKeyMap(keyMap);
    }
  });

  function getOption(conf, name) {
    if (name == "pairs" && typeof conf == "string") return conf;
    if (typeof conf == "object" && conf[name] != null) return conf[name];
    return defaults[name];
  }

  var keyMap = {Backspace: handleBackspace, Enter: handleEnter};
  function ensureBound(chars) {
    for (var i = 0; i < chars.length; i++) {
      var ch = chars.charAt(i), key = "'" + ch + "'"
      if (!keyMap[key]) keyMap[key] = handler(ch)
    }
  }
  ensureBound(defaults.pairs + "`")

  function handler(ch) {
    return function(cm) { return handleChar(cm, ch); };
  }

  function getConfig(cm) {
    var deflt = cm.state.closeBrackets;
    if (!deflt || deflt.override) return deflt;
    var mode = cm.getModeAt(cm.getCursor());
    return mode.closeBrackets || deflt;
  }

  function handleBackspace(cm) {
    var conf = getConfig(cm);
    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;

    var pairs = getOption(conf, "pairs");
    var ranges = cm.listSelections();
    for (var i = 0; i < ranges.length; i++) {
      if (!ranges[i].empty()) return CodeMirror.Pass;
      var around = charsAround(cm, ranges[i].head);
      if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
    }
    for (var i = ranges.length - 1; i >= 0; i--) {
      var cur = ranges[i].head;
      cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete");
    }
  }

  function handleEnter(cm) {
    var conf = getConfig(cm);
    var explode = conf && getOption(conf, "explode");
    if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass;

    var ranges = cm.listSelections();
    for (var i = 0; i < ranges.length; i++) {
      if (!ranges[i].empty()) return CodeMirror.Pass;
      var around = charsAround(cm, ranges[i].head);
      if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass;
    }
    cm.operation(function() {
      var linesep = cm.lineSeparator() || "\n";
      cm.replaceSelection(linesep + linesep, null);
      cm.execCommand("goCharLeft");
      ranges = cm.listSelections();
      for (var i = 0; i < ranges.length; i++) {
        var line = ranges[i].head.line;
        cm.indentLine(line, null, true);
        cm.indentLine(line + 1, null, true);
      }
    });
  }

  function contractSelection(sel) {
    var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0;
    return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)),
            head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))};
  }

  function handleChar(cm, ch) {
    var conf = getConfig(cm);
    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;

    var pairs = getOption(conf, "pairs");
    var pos = pairs.indexOf(ch);
    if (pos == -1) return CodeMirror.Pass;
    var triples = getOption(conf, "triples");

    var identical = pairs.charAt(pos + 1) == ch;
    var ranges = cm.listSelections();
    var opening = pos % 2 == 0;

    var type;
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], cur = range.head, curType;
      var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1));
      if (opening && !range.empty()) {
        curType = "surround";
      } else if ((identical || !opening) && next == ch) {
        if (identical && stringStartsAfter(cm, cur))
          curType = "both";
        else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch)
          curType = "skipThree";
        else
          curType = "skip";
      } else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 &&
                 cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch) {
        if (cur.ch > 2 && /\bstring/.test(cm.getTokenTypeAt(Pos(cur.line, cur.ch - 2)))) return CodeMirror.Pass;
        curType = "addFour";
      } else if (identical) {
        var prev = cur.ch == 0 ? " " : cm.getRange(Pos(cur.line, cur.ch - 1), cur)
        if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = "both";
        else return CodeMirror.Pass;
      } else if (opening) {
        curType = "both";
      } else {
        return CodeMirror.Pass;
      }
      if (!type) type = curType;
      else if (type != curType) return CodeMirror.Pass;
    }

    var left = pos % 2 ? pairs.charAt(pos - 1) : ch;
    var right = pos % 2 ? ch : pairs.charAt(pos + 1);
    cm.operation(function() {
      if (type == "skip") {
        cm.execCommand("goCharRight");
      } else if (type == "skipThree") {
        for (var i = 0; i < 3; i++)
          cm.execCommand("goCharRight");
      } else if (type == "surround") {
        var sels = cm.getSelections();
        for (var i = 0; i < sels.length; i++)
          sels[i] = left + sels[i] + right;
        cm.replaceSelections(sels, "around");
        sels = cm.listSelections().slice();
        for (var i = 0; i < sels.length; i++)
          sels[i] = contractSelection(sels[i]);
        cm.setSelections(sels);
      } else if (type == "both") {
        cm.replaceSelection(left + right, null);
        cm.triggerElectric(left + right);
        cm.execCommand("goCharLeft");
      } else if (type == "addFour") {
        cm.replaceSelection(left + left + left + left, "before");
        cm.execCommand("goCharRight");
      }
    });
  }

  function charsAround(cm, pos) {
    var str = cm.getRange(Pos(pos.line, pos.ch - 1),
                          Pos(pos.line, pos.ch + 1));
    return str.length == 2 ? str : null;
  }

  function stringStartsAfter(cm, pos) {
    var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1))
    return /\bstring/.test(token.type) && token.start == pos.ch &&
      (pos.ch == 0 || !/\bstring/.test(cm.getTokenTypeAt(pos)))
  }
});


/***/ }),
/* 476 */,
/* 477 */
/*!*********************************************************!*\
  !*** ./node_modules/codemirror/addon/dialog/dialog.css ***!
  \*********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 478 */
/*!******************************************************************!*\
  !*** ./node_modules/codemirror/addon/comment/continuecomment.js ***!
  \******************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  function continueComment(cm) {
    if (cm.getOption("disableInput")) return CodeMirror.Pass;
    var ranges = cm.listSelections(), mode, inserts = [];
    for (var i = 0; i < ranges.length; i++) {
      var pos = ranges[i].head
      if (!/\bcomment\b/.test(cm.getTokenTypeAt(pos))) return CodeMirror.Pass;
      var modeHere = cm.getModeAt(pos)
      if (!mode) mode = modeHere;
      else if (mode != modeHere) return CodeMirror.Pass;

      var insert = null;
      if (mode.blockCommentStart && mode.blockCommentContinue) {
        var line = cm.getLine(pos.line).slice(0, pos.ch)
        var end = line.lastIndexOf(mode.blockCommentEnd), found
        if (end != -1 && end == pos.ch - mode.blockCommentEnd.length) {
          // Comment ended, don't continue it
        } else if ((found = line.lastIndexOf(mode.blockCommentStart)) > -1 && found > end) {
          insert = line.slice(0, found)
          if (/\S/.test(insert)) {
            insert = ""
            for (var j = 0; j < found; ++j) insert += " "
          }
        } else if ((found = line.indexOf(mode.blockCommentContinue)) > -1 && !/\S/.test(line.slice(0, found))) {
          insert = line.slice(0, found)
        }
        if (insert != null) insert += mode.blockCommentContinue
      }
      if (insert == null && mode.lineComment && continueLineCommentEnabled(cm)) {
        var line = cm.getLine(pos.line), found = line.indexOf(mode.lineComment);
        if (found > -1) {
          insert = line.slice(0, found);
          if (/\S/.test(insert)) insert = null;
          else insert += mode.lineComment + line.slice(found + mode.lineComment.length).match(/^\s*/)[0];
        }
      }
      if (insert == null) return CodeMirror.Pass;
      inserts[i] = "\n" + insert;
    }

    cm.operation(function() {
      for (var i = ranges.length - 1; i >= 0; i--)
        cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+insert");
    });
  }

  function continueLineCommentEnabled(cm) {
    var opt = cm.getOption("continueComments");
    if (opt && typeof opt == "object")
      return opt.continueLineComment !== false;
    return true;
  }

  CodeMirror.defineOption("continueComments", null, function(cm, val, prev) {
    if (prev && prev != CodeMirror.Init)
      cm.removeKeyMap("continueComment");
    if (val) {
      var key = "Enter";
      if (typeof val == "string")
        key = val;
      else if (typeof val == "object" && val.key)
        key = val.key;
      var map = {name: "continueComment"};
      map[key] = continueComment;
      cm.addKeyMap(map);
    }
  });
});


/***/ }),
/* 479 */
/*!*************************************************!*\
  !*** ./node_modules/codemirror/keymap/emacs.js ***!
  \*************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
  "use strict";

  var Pos = CodeMirror.Pos;
  function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }

  // Kill 'ring'

  var killRing = [];
  function addToRing(str) {
    killRing.push(str);
    if (killRing.length > 50) killRing.shift();
  }
  function growRingTop(str) {
    if (!killRing.length) return addToRing(str);
    killRing[killRing.length - 1] += str;
  }
  function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; }
  function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }

  var lastKill = null;

  function kill(cm, from, to, ring, text) {
    if (text == null) text = cm.getRange(from, to);

    if (ring == "grow" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))
      growRingTop(text);
    else if (ring !== false)
      addToRing(text);
    cm.replaceRange("", from, to, "+delete");

    if (ring == "grow") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};
    else lastKill = null;
  }

  // Boundaries of various units

  function byChar(cm, pos, dir) {
    return cm.findPosH(pos, dir, "char", true);
  }

  function byWord(cm, pos, dir) {
    return cm.findPosH(pos, dir, "word", true);
  }

  function byLine(cm, pos, dir) {
    return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn);
  }

  function byPage(cm, pos, dir) {
    return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn);
  }

  function byParagraph(cm, pos, dir) {
    var no = pos.line, line = cm.getLine(no);
    var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));
    var fst = cm.firstLine(), lst = cm.lastLine();
    for (;;) {
      no += dir;
      if (no < fst || no > lst)
        return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));
      line = cm.getLine(no);
      var hasText = /\S/.test(line);
      if (hasText) sawText = true;
      else if (sawText) return Pos(no, 0);
    }
  }

  function bySentence(cm, pos, dir) {
    var line = pos.line, ch = pos.ch;
    var text = cm.getLine(pos.line), sawWord = false;
    for (;;) {
      var next = text.charAt(ch + (dir < 0 ? -1 : 0));
      if (!next) { // End/beginning of line reached
        if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);
        text = cm.getLine(line + dir);
        if (!/\S/.test(text)) return Pos(line, ch);
        line += dir;
        ch = dir < 0 ? text.length : 0;
        continue;
      }
      if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));
      if (!sawWord) sawWord = /\w/.test(next);
      ch += dir;
    }
  }

  function byExpr(cm, pos, dir) {
    var wrap;
    if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))
        && wrap.match && (wrap.forward ? 1 : -1) == dir)
      return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;

    for (var first = true;; first = false) {
      var token = cm.getTokenAt(pos);
      var after = Pos(pos.line, dir < 0 ? token.start : token.end);
      if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) {
        var newPos = cm.findPosH(after, dir, "char");
        if (posEq(after, newPos)) return pos;
        else pos = newPos;
      } else {
        return after;
      }
    }
  }

  // Prefixes (only crudely supported)

  function getPrefix(cm, precise) {
    var digits = cm.state.emacsPrefix;
    if (!digits) return precise ? null : 1;
    clearPrefix(cm);
    return digits == "-" ? -1 : Number(digits);
  }

  function repeated(cmd) {
    var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd;
    return function(cm) {
      var prefix = getPrefix(cm);
      f(cm);
      for (var i = 1; i < prefix; ++i) f(cm);
    };
  }

  function findEnd(cm, pos, by, dir) {
    var prefix = getPrefix(cm);
    if (prefix < 0) { dir = -dir; prefix = -prefix; }
    for (var i = 0; i < prefix; ++i) {
      var newPos = by(cm, pos, dir);
      if (posEq(newPos, pos)) break;
      pos = newPos;
    }
    return pos;
  }

  function move(by, dir) {
    var f = function(cm) {
      cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
    };
    f.motion = true;
    return f;
  }

  function killTo(cm, by, dir, ring) {
    var selections = cm.listSelections(), cursor;
    var i = selections.length;
    while (i--) {
      cursor = selections[i].head;
      kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);
    }
  }

  function killRegion(cm, ring) {
    if (cm.somethingSelected()) {
      var selections = cm.listSelections(), selection;
      var i = selections.length;
      while (i--) {
        selection = selections[i];
        kill(cm, selection.anchor, selection.head, ring);
      }
      return true;
    }
  }

  function addPrefix(cm, digit) {
    if (cm.state.emacsPrefix) {
      if (digit != "-") cm.state.emacsPrefix += digit;
      return;
    }
    // Not active yet
    cm.state.emacsPrefix = digit;
    cm.on("keyHandled", maybeClearPrefix);
    cm.on("inputRead", maybeDuplicateInput);
  }

  var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true};

  function maybeClearPrefix(cm, arg) {
    if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))
      clearPrefix(cm);
  }

  function clearPrefix(cm) {
    cm.state.emacsPrefix = null;
    cm.off("keyHandled", maybeClearPrefix);
    cm.off("inputRead", maybeDuplicateInput);
  }

  function maybeDuplicateInput(cm, event) {
    var dup = getPrefix(cm);
    if (dup > 1 && event.origin == "+input") {
      var one = event.text.join("\n"), txt = "";
      for (var i = 1; i < dup; ++i) txt += one;
      cm.replaceSelection(txt);
    }
  }

  function addPrefixMap(cm) {
    cm.state.emacsPrefixMap = true;
    cm.addKeyMap(prefixMap);
    cm.on("keyHandled", maybeRemovePrefixMap);
    cm.on("inputRead", maybeRemovePrefixMap);
  }

  function maybeRemovePrefixMap(cm, arg) {
    if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return;
    cm.removeKeyMap(prefixMap);
    cm.state.emacsPrefixMap = false;
    cm.off("keyHandled", maybeRemovePrefixMap);
    cm.off("inputRead", maybeRemovePrefixMap);
  }

  // Utilities

  function setMark(cm) {
    cm.setCursor(cm.getCursor());
    cm.setExtending(!cm.getExtending());
    cm.on("change", function() { cm.setExtending(false); });
  }

  function clearMark(cm) {
    cm.setExtending(false);
    cm.setCursor(cm.getCursor());
  }

  function getInput(cm, msg, f) {
    if (cm.openDialog)
      cm.openDialog(msg + ": <input type=\"text\" style=\"width: 10em\"/>", f, {bottom: true});
    else
      f(prompt(msg, ""));
  }

  function operateOnWord(cm, op) {
    var start = cm.getCursor(), end = cm.findPosH(start, 1, "word");
    cm.replaceRange(op(cm.getRange(start, end)), start, end);
    cm.setCursor(end);
  }

  function toEnclosingExpr(cm) {
    var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
    var stack = [];
    while (line >= cm.firstLine()) {
      var text = cm.getLine(line);
      for (var i = ch == null ? text.length : ch; i > 0;) {
        var ch = text.charAt(--i);
        if (ch == ")")
          stack.push("(");
        else if (ch == "]")
          stack.push("[");
        else if (ch == "}")
          stack.push("{");
        else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
          return cm.extendSelection(Pos(line, i));
      }
      --line; ch = null;
    }
  }

  function quit(cm) {
    cm.execCommand("clearSearch");
    clearMark(cm);
  }

  CodeMirror.emacs = {kill: kill, killRegion: killRegion, repeated: repeated};

  // Actual keymap

  var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({
    "Ctrl-W": function(cm) {kill(cm, cm.getCursor("start"), cm.getCursor("end"), true);},
    "Ctrl-K": repeated(function(cm) {
      var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));
      var text = cm.getRange(start, end);
      if (!/\S/.test(text)) {
        text += "\n";
        end = Pos(start.line + 1, 0);
      }
      kill(cm, start, end, "grow", text);
    }),
    "Alt-W": function(cm) {
      addToRing(cm.getSelection());
      clearMark(cm);
    },
    "Ctrl-Y": function(cm) {
      var start = cm.getCursor();
      cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste");
      cm.setSelection(start, cm.getCursor());
    },
    "Alt-Y": function(cm) {cm.replaceSelection(popFromRing(), "around", "paste");},

    "Ctrl-Space": setMark, "Ctrl-Shift-2": setMark,

    "Ctrl-F": move(byChar, 1), "Ctrl-B": move(byChar, -1),
    "Right": move(byChar, 1), "Left": move(byChar, -1),
    "Ctrl-D": function(cm) { killTo(cm, byChar, 1, false); },
    "Delete": function(cm) { killRegion(cm, false) || killTo(cm, byChar, 1, false); },
    "Ctrl-H": function(cm) { killTo(cm, byChar, -1, false); },
    "Backspace": function(cm) { killRegion(cm, false) || killTo(cm, byChar, -1, false); },

    "Alt-F": move(byWord, 1), "Alt-B": move(byWord, -1),
    "Alt-Right": move(byWord, 1), "Alt-Left": move(byWord, -1),
    "Alt-D": function(cm) { killTo(cm, byWord, 1, "grow"); },
    "Alt-Backspace": function(cm) { killTo(cm, byWord, -1, "grow"); },

    "Ctrl-N": move(byLine, 1), "Ctrl-P": move(byLine, -1),
    "Down": move(byLine, 1), "Up": move(byLine, -1),
    "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "End": "goLineEnd", "Home": "goLineStart",

    "Alt-V": move(byPage, -1), "Ctrl-V": move(byPage, 1),
    "PageUp": move(byPage, -1), "PageDown": move(byPage, 1),

    "Ctrl-Up": move(byParagraph, -1), "Ctrl-Down": move(byParagraph, 1),

    "Alt-A": move(bySentence, -1), "Alt-E": move(bySentence, 1),
    "Alt-K": function(cm) { killTo(cm, bySentence, 1, "grow"); },

    "Ctrl-Alt-K": function(cm) { killTo(cm, byExpr, 1, "grow"); },
    "Ctrl-Alt-Backspace": function(cm) { killTo(cm, byExpr, -1, "grow"); },
    "Ctrl-Alt-F": move(byExpr, 1), "Ctrl-Alt-B": move(byExpr, -1, "grow"),

    "Shift-Ctrl-Alt-2": function(cm) {
      var cursor = cm.getCursor();
      cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);
    },
    "Ctrl-Alt-T": function(cm) {
      var leftStart = byExpr(cm, cm.getCursor(), -1), leftEnd = byExpr(cm, leftStart, 1);
      var rightEnd = byExpr(cm, leftEnd, 1), rightStart = byExpr(cm, rightEnd, -1);
      cm.replaceRange(cm.getRange(rightStart, rightEnd) + cm.getRange(leftEnd, rightStart) +
                      cm.getRange(leftStart, leftEnd), leftStart, rightEnd);
    },
    "Ctrl-Alt-U": repeated(toEnclosingExpr),

    "Alt-Space": function(cm) {
      var pos = cm.getCursor(), from = pos.ch, to = pos.ch, text = cm.getLine(pos.line);
      while (from && /\s/.test(text.charAt(from - 1))) --from;
      while (to < text.length && /\s/.test(text.charAt(to))) ++to;
      cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to));
    },
    "Ctrl-O": repeated(function(cm) { cm.replaceSelection("\n", "start"); }),
    "Ctrl-T": repeated(function(cm) {
      cm.execCommand("transposeChars");
    }),

    "Alt-C": repeated(function(cm) {
      operateOnWord(cm, function(w) {
        var letter = w.search(/\w/);
        if (letter == -1) return w;
        return w.slice(0, letter) + w.charAt(letter).toUpperCase() + w.slice(letter + 1).toLowerCase();
      });
    }),
    "Alt-U": repeated(function(cm) {
      operateOnWord(cm, function(w) { return w.toUpperCase(); });
    }),
    "Alt-L": repeated(function(cm) {
      operateOnWord(cm, function(w) { return w.toLowerCase(); });
    }),

    "Alt-;": "toggleComment",

    "Ctrl-/": repeated("undo"), "Shift-Ctrl--": repeated("undo"),
    "Ctrl-Z": repeated("undo"), "Cmd-Z": repeated("undo"),
    "Shift-Alt-,": "goDocStart", "Shift-Alt-.": "goDocEnd",
    "Ctrl-S": "findPersistentNext", "Ctrl-R": "findPersistentPrev", "Ctrl-G": quit, "Shift-Alt-5": "replace",
    "Alt-/": "autocomplete",
    "Enter": "newlineAndIndent",
    "Ctrl-J": repeated(function(cm) { cm.replaceSelection("\n", "end"); }),
    "Tab": "indentAuto",

    "Alt-G G": function(cm) {
      var prefix = getPrefix(cm, true);
      if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);

      getInput(cm, "Goto line", function(str) {
        var num;
        if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)
          cm.setCursor(num - 1);
      });
    },

    "Ctrl-X Tab": function(cm) {
      cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit"));
    },
    "Ctrl-X Ctrl-X": function(cm) {
      cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor"));
    },
    "Ctrl-X Ctrl-S": "save",
    "Ctrl-X Ctrl-W": "save",
    "Ctrl-X S": "saveAll",
    "Ctrl-X F": "open",
    "Ctrl-X U": repeated("undo"),
    "Ctrl-X K": "close",
    "Ctrl-X Delete": function(cm) { kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), "grow"); },
    "Ctrl-X H": "selectAll",

    "Ctrl-Q Tab": repeated("insertTab"),
    "Ctrl-U": addPrefixMap
  });

  var prefixMap = {"Ctrl-G": clearPrefix};
  function regPrefix(d) {
    prefixMap[d] = function(cm) { addPrefix(cm, d); };
    keyMap["Ctrl-" + d] = function(cm) { addPrefix(cm, d); };
    prefixPreservingKeys["Ctrl-" + d] = true;
  }
  for (var i = 0; i < 10; ++i) regPrefix(String(i));
  regPrefix("-");
});


/***/ }),
/* 480 */
/*!***********************************************!*\
  !*** ./node_modules/codemirror/keymap/vim.js ***!
  \***********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

/**
 * Supported keybindings:
 *   Too many to list. Refer to defaultKeymap below.
 *
 * Supported Ex commands:
 *   Refer to defaultExCommandMap below.
 *
 * Registers: unnamed, -, a-z, A-Z, 0-9
 *   (Does not respect the special case for number registers when delete
 *    operator is made with these commands: %, (, ),  , /, ?, n, N, {, } )
 *   TODO: Implement the remaining registers.
 *
 * Marks: a-z, A-Z, and 0-9
 *   TODO: Implement the remaining special marks. They have more complex
 *       behavior.
 *
 * Events:
 *  'vim-mode-change' - raised on the editor anytime the current mode changes,
 *                      Event object: {mode: "visual", subMode: "linewise"}
 *
 * Code structure:
 *  1. Default keymap
 *  2. Variable declarations and short basic helpers
 *  3. Instance (External API) implementation
 *  4. Internal state tracking objects (input state, counter) implementation
 *     and instantiation
 *  5. Key handler (the main command dispatcher) implementation
 *  6. Motion, operator, and action implementations
 *  7. Helper functions for the key handler, motions, operators, and actions
 *  8. Set up Vim to work as a keymap for CodeMirror.
 *  9. Ex command implementations.
 */

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../lib/codemirror */ 43), __webpack_require__(/*! ../addon/search/searchcursor */ 191), __webpack_require__(/*! ../addon/dialog/dialog */ 241), __webpack_require__(/*! ../addon/edit/matchbrackets.js */ 190));
  else {}
})(function(CodeMirror) {
  'use strict';

  var defaultKeymap = [
    // Key to key mapping. This goes first to make it possible to override
    // existing mappings.
    { keys: '<Left>', type: 'keyToKey', toKeys: 'h' },
    { keys: '<Right>', type: 'keyToKey', toKeys: 'l' },
    { keys: '<Up>', type: 'keyToKey', toKeys: 'k' },
    { keys: '<Down>', type: 'keyToKey', toKeys: 'j' },
    { keys: '<Space>', type: 'keyToKey', toKeys: 'l' },
    { keys: '<BS>', type: 'keyToKey', toKeys: 'h', context: 'normal'},
    { keys: '<C-Space>', type: 'keyToKey', toKeys: 'W' },
    { keys: '<C-BS>', type: 'keyToKey', toKeys: 'B', context: 'normal' },
    { keys: '<S-Space>', type: 'keyToKey', toKeys: 'w' },
    { keys: '<S-BS>', type: 'keyToKey', toKeys: 'b', context: 'normal' },
    { keys: '<C-n>', type: 'keyToKey', toKeys: 'j' },
    { keys: '<C-p>', type: 'keyToKey', toKeys: 'k' },
    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>' },
    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>' },
    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
    { keys: 's', type: 'keyToKey', toKeys: 'cl', context: 'normal' },
    { keys: 's', type: 'keyToKey', toKeys: 'c', context: 'visual'},
    { keys: 'S', type: 'keyToKey', toKeys: 'cc', context: 'normal' },
    { keys: 'S', type: 'keyToKey', toKeys: 'VdO', context: 'visual' },
    { keys: '<Home>', type: 'keyToKey', toKeys: '0' },
    { keys: '<End>', type: 'keyToKey', toKeys: '$' },
    { keys: '<PageUp>', type: 'keyToKey', toKeys: '<C-b>' },
    { keys: '<PageDown>', type: 'keyToKey', toKeys: '<C-f>' },
    { keys: '<CR>', type: 'keyToKey', toKeys: 'j^', context: 'normal' },
    { keys: '<Ins>', type: 'action', action: 'toggleOverwrite', context: 'insert' },
    // Motions
    { keys: 'H', type: 'motion', motion: 'moveToTopLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'M', type: 'motion', motion: 'moveToMiddleLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'L', type: 'motion', motion: 'moveToBottomLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'h', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: false }},
    { keys: 'l', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: true }},
    { keys: 'j', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, linewise: true }},
    { keys: 'k', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, linewise: true }},
    { keys: 'gj', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: true }},
    { keys: 'gk', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: false }},
    { keys: 'w', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false }},
    { keys: 'W', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false, bigWord: true }},
    { keys: 'e', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, inclusive: true }},
    { keys: 'E', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, bigWord: true, inclusive: true }},
    { keys: 'b', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }},
    { keys: 'B', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false, bigWord: true }},
    { keys: 'ge', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, inclusive: true }},
    { keys: 'gE', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, bigWord: true, inclusive: true }},
    { keys: '{', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: false, toJumplist: true }},
    { keys: '}', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: true, toJumplist: true }},
    { keys: '(', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: false }},
    { keys: ')', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: true }},
    { keys: '<C-f>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: true }},
    { keys: '<C-b>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: false }},
    { keys: '<C-d>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: true, explicitRepeat: true }},
    { keys: '<C-u>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: false, explicitRepeat: true }},
    { keys: 'gg', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: false, explicitRepeat: true, linewise: true, toJumplist: true }},
    { keys: 'G', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: true, explicitRepeat: true, linewise: true, toJumplist: true }},
    { keys: '0', type: 'motion', motion: 'moveToStartOfLine' },
    { keys: '^', type: 'motion', motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: '+', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true }},
    { keys: '-', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, toFirstChar:true }},
    { keys: '_', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true, repeatOffset:-1 }},
    { keys: '$', type: 'motion', motion: 'moveToEol', motionArgs: { inclusive: true }},
    { keys: '%', type: 'motion', motion: 'moveToMatchedSymbol', motionArgs: { inclusive: true, toJumplist: true }},
    { keys: 'f<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: true , inclusive: true }},
    { keys: 'F<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: false }},
    { keys: 't<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: true, inclusive: true }},
    { keys: 'T<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: false }},
    { keys: ';', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: true }},
    { keys: ',', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: false }},
    { keys: '\'<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true, linewise: true}},
    { keys: '`<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true}},
    { keys: ']`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true } },
    { keys: '[`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false } },
    { keys: ']\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true, linewise: true } },
    { keys: '[\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false, linewise: true } },
    // the next two aren't motions but must come before more general motion declarations
    { keys: ']p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true, matchIndent: true}},
    { keys: '[p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true, matchIndent: true}},
    { keys: ']<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: true, toJumplist: true}},
    { keys: '[<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: false, toJumplist: true}},
    { keys: '|', type: 'motion', motion: 'moveToColumn'},
    { keys: 'o', type: 'motion', motion: 'moveToOtherHighlightedEnd', context:'visual'},
    { keys: 'O', type: 'motion', motion: 'moveToOtherHighlightedEnd', motionArgs: {sameLine: true}, context:'visual'},
    // Operators
    { keys: 'd', type: 'operator', operator: 'delete' },
    { keys: 'y', type: 'operator', operator: 'yank' },
    { keys: 'c', type: 'operator', operator: 'change' },
    { keys: '=', type: 'operator', operator: 'indentAuto' },
    { keys: '>', type: 'operator', operator: 'indent', operatorArgs: { indentRight: true }},
    { keys: '<', type: 'operator', operator: 'indent', operatorArgs: { indentRight: false }},
    { keys: 'g~', type: 'operator', operator: 'changeCase' },
    { keys: 'gu', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, isEdit: true },
    { keys: 'gU', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, isEdit: true },
    { keys: 'n', type: 'motion', motion: 'findNext', motionArgs: { forward: true, toJumplist: true }},
    { keys: 'N', type: 'motion', motion: 'findNext', motionArgs: { forward: false, toJumplist: true }},
    // Operator-Motion dual commands
    { keys: 'x', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorMotionArgs: { visualLine: false }},
    { keys: 'X', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: false }, operatorMotionArgs: { visualLine: true }},
    { keys: 'D', type: 'operatorMotion', operator: 'delete', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'D', type: 'operator', operator: 'delete', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: 'Y', type: 'operatorMotion', operator: 'yank', motion: 'expandToLine', motionArgs: { linewise: true }, context: 'normal'},
    { keys: 'Y', type: 'operator', operator: 'yank', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: 'C', type: 'operatorMotion', operator: 'change', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'C', type: 'operator', operator: 'change', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: '~', type: 'operatorMotion', operator: 'changeCase', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorArgs: { shouldMoveCursor: true }, context: 'normal'},
    { keys: '~', type: 'operator', operator: 'changeCase', context: 'visual'},
    { keys: '<C-w>', type: 'operatorMotion', operator: 'delete', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }, context: 'insert' },
    //ignore C-w in normal mode
    { keys: '<C-w>', type: 'idle', context: 'normal' },
    // Actions
    { keys: '<C-i>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: true }},
    { keys: '<C-o>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: false }},
    { keys: '<C-e>', type: 'action', action: 'scroll', actionArgs: { forward: true, linewise: true }},
    { keys: '<C-y>', type: 'action', action: 'scroll', actionArgs: { forward: false, linewise: true }},
    { keys: 'a', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'charAfter' }, context: 'normal' },
    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'eol' }, context: 'normal' },
    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'endOfSelectedArea' }, context: 'visual' },
    { keys: 'i', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'inplace' }, context: 'normal' },
    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'firstNonBlank'}, context: 'normal' },
    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'startOfSelectedArea' }, context: 'visual' },
    { keys: 'o', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: true }, context: 'normal' },
    { keys: 'O', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: false }, context: 'normal' },
    { keys: 'v', type: 'action', action: 'toggleVisualMode' },
    { keys: 'V', type: 'action', action: 'toggleVisualMode', actionArgs: { linewise: true }},
    { keys: '<C-v>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
    { keys: '<C-q>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
    { keys: 'gv', type: 'action', action: 'reselectLastSelection' },
    { keys: 'J', type: 'action', action: 'joinLines', isEdit: true },
    { keys: 'p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true }},
    { keys: 'P', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true }},
    { keys: 'r<character>', type: 'action', action: 'replace', isEdit: true },
    { keys: '@<character>', type: 'action', action: 'replayMacro' },
    { keys: 'q<character>', type: 'action', action: 'enterMacroRecordMode' },
    // Handle Replace-mode as a special case of insert mode.
    { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }},
    { keys: 'u', type: 'action', action: 'undo', context: 'normal' },
    { keys: 'u', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, context: 'visual', isEdit: true },
    { keys: 'U', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, context: 'visual', isEdit: true },
    { keys: '<C-r>', type: 'action', action: 'redo' },
    { keys: 'm<character>', type: 'action', action: 'setMark' },
    { keys: '"<character>', type: 'action', action: 'setRegister' },
    { keys: 'zz', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }},
    { keys: 'z.', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: 'zt', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }},
    { keys: 'z<CR>', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: 'z-', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }},
    { keys: 'zb', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: '.', type: 'action', action: 'repeatLastEdit' },
    { keys: '<C-a>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: true, backtrack: false}},
    { keys: '<C-x>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: false, backtrack: false}},
    { keys: '<C-t>', type: 'action', action: 'indent', actionArgs: { indentRight: true }, context: 'insert' },
    { keys: '<C-d>', type: 'action', action: 'indent', actionArgs: { indentRight: false }, context: 'insert' },
    // Text object motions
    { keys: 'a<character>', type: 'motion', motion: 'textObjectManipulation' },
    { keys: 'i<character>', type: 'motion', motion: 'textObjectManipulation', motionArgs: { textObjectInner: true }},
    // Search
    { keys: '/', type: 'search', searchArgs: { forward: true, querySrc: 'prompt', toJumplist: true }},
    { keys: '?', type: 'search', searchArgs: { forward: false, querySrc: 'prompt', toJumplist: true }},
    { keys: '*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
    { keys: '#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
    { keys: 'g*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', toJumplist: true }},
    { keys: 'g#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', toJumplist: true }},
    // Ex command
    { keys: ':', type: 'ex' }
  ];
  var defaultKeymapLength = defaultKeymap.length;

  /**
   * Ex commands
   * Care must be taken when adding to the default Ex command map. For any
   * pair of commands that have a shared prefix, at least one of their
   * shortNames must not match the prefix of the other command.
   */
  var defaultExCommandMap = [
    { name: 'colorscheme', shortName: 'colo' },
    { name: 'map' },
    { name: 'imap', shortName: 'im' },
    { name: 'nmap', shortName: 'nm' },
    { name: 'vmap', shortName: 'vm' },
    { name: 'unmap' },
    { name: 'write', shortName: 'w' },
    { name: 'undo', shortName: 'u' },
    { name: 'redo', shortName: 'red' },
    { name: 'set', shortName: 'se' },
    { name: 'set', shortName: 'se' },
    { name: 'setlocal', shortName: 'setl' },
    { name: 'setglobal', shortName: 'setg' },
    { name: 'sort', shortName: 'sor' },
    { name: 'substitute', shortName: 's', possiblyAsync: true },
    { name: 'nohlsearch', shortName: 'noh' },
    { name: 'yank', shortName: 'y' },
    { name: 'delmarks', shortName: 'delm' },
    { name: 'registers', shortName: 'reg', excludeFromCommandHistory: true },
    { name: 'global', shortName: 'g' }
  ];

  var Pos = CodeMirror.Pos;

  var Vim = function() {
    function enterVimMode(cm) {
      cm.setOption('disableInput', true);
      cm.setOption('showCursorWhenSelecting', false);
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      cm.on('cursorActivity', onCursorActivity);
      maybeInitVimState(cm);
      CodeMirror.on(cm.getInputField(), 'paste', getOnPasteFn(cm));
    }

    function leaveVimMode(cm) {
      cm.setOption('disableInput', false);
      cm.off('cursorActivity', onCursorActivity);
      CodeMirror.off(cm.getInputField(), 'paste', getOnPasteFn(cm));
      cm.state.vim = null;
    }

    function detachVimMap(cm, next) {
      if (this == CodeMirror.keyMap.vim) {
        CodeMirror.rmClass(cm.getWrapperElement(), "cm-fat-cursor");
        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
          disableFatCursorMark(cm);
          cm.getInputField().style.caretColor = "";
        }
      }

      if (!next || next.attach != attachVimMap)
        leaveVimMode(cm);
    }
    function attachVimMap(cm, prev) {
      if (this == CodeMirror.keyMap.vim) {
        CodeMirror.addClass(cm.getWrapperElement(), "cm-fat-cursor");
        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
          enableFatCursorMark(cm);
          cm.getInputField().style.caretColor = "transparent";
        }
      }

      if (!prev || prev.attach != attachVimMap)
        enterVimMode(cm);
    }

    function fatCursorMarks(cm) {
      var ranges = cm.listSelections(), result = []
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i]
        if (range.empty()) {
          if (range.anchor.ch < cm.getLine(range.anchor.line).length) {
            result.push(cm.markText(range.anchor, Pos(range.anchor.line, range.anchor.ch + 1),
                                    {className: "cm-fat-cursor-mark"}))
          } else {
            var widget = document.createElement("span")
            widget.textContent = "\u00a0"
            widget.className = "cm-fat-cursor-mark"
            result.push(cm.setBookmark(range.anchor, {widget: widget}))
          }
        }
      }
      return result
    }

    function updateFatCursorMark(cm) {
      var marks = cm.state.fatCursorMarks
      if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear()
      cm.state.fatCursorMarks = fatCursorMarks(cm)
    }

    function enableFatCursorMark(cm) {
      cm.state.fatCursorMarks = fatCursorMarks(cm)
      cm.on("cursorActivity", updateFatCursorMark)
    }

    function disableFatCursorMark(cm) {
      var marks = cm.state.fatCursorMarks
      if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear()
      cm.state.fatCursorMarks = null
      cm.off("cursorActivity", updateFatCursorMark)
    }

    // Deprecated, simply setting the keymap works again.
    CodeMirror.defineOption('vimMode', false, function(cm, val, prev) {
      if (val && cm.getOption("keyMap") != "vim")
        cm.setOption("keyMap", "vim");
      else if (!val && prev != CodeMirror.Init && /^vim/.test(cm.getOption("keyMap")))
        cm.setOption("keyMap", "default");
    });

    function cmKey(key, cm) {
      if (!cm) { return undefined; }
      if (this[key]) { return this[key]; }
      var vimKey = cmKeyToVimKey(key);
      if (!vimKey) {
        return false;
      }
      var cmd = CodeMirror.Vim.findKey(cm, vimKey);
      if (typeof cmd == 'function') {
        CodeMirror.signal(cm, 'vim-keypress', vimKey);
      }
      return cmd;
    }

    var modifiers = {'Shift': 'S', 'Ctrl': 'C', 'Alt': 'A', 'Cmd': 'D', 'Mod': 'A'};
    var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del',Insert:'Ins'};
    function cmKeyToVimKey(key) {
      if (key.charAt(0) == '\'') {
        // Keypress character binding of format "'a'"
        return key.charAt(1);
      }
      var pieces = key.split(/-(?!$)/);
      var lastPiece = pieces[pieces.length - 1];
      if (pieces.length == 1 && pieces[0].length == 1) {
        // No-modifier bindings use literal character bindings above. Skip.
        return false;
      } else if (pieces.length == 2 && pieces[0] == 'Shift' && lastPiece.length == 1) {
        // Ignore Shift+char bindings as they should be handled by literal character.
        return false;
      }
      var hasCharacter = false;
      for (var i = 0; i < pieces.length; i++) {
        var piece = pieces[i];
        if (piece in modifiers) { pieces[i] = modifiers[piece]; }
        else { hasCharacter = true; }
        if (piece in specialKeys) { pieces[i] = specialKeys[piece]; }
      }
      if (!hasCharacter) {
        // Vim does not support modifier only keys.
        return false;
      }
      // TODO: Current bindings expect the character to be lower case, but
      // it looks like vim key notation uses upper case.
      if (isUpperCase(lastPiece)) {
        pieces[pieces.length - 1] = lastPiece.toLowerCase();
      }
      return '<' + pieces.join('-') + '>';
    }

    function getOnPasteFn(cm) {
      var vim = cm.state.vim;
      if (!vim.onPasteFn) {
        vim.onPasteFn = function() {
          if (!vim.insertMode) {
            cm.setCursor(offsetCursor(cm.getCursor(), 0, 1));
            actions.enterInsertMode(cm, {}, vim);
          }
        };
      }
      return vim.onPasteFn;
    }

    var numberRegex = /[\d]/;
    var wordCharTest = [CodeMirror.isWordChar, function(ch) {
      return ch && !CodeMirror.isWordChar(ch) && !/\s/.test(ch);
    }], bigWordCharTest = [function(ch) {
      return /\S/.test(ch);
    }];
    function makeKeyRange(start, size) {
      var keys = [];
      for (var i = start; i < start + size; i++) {
        keys.push(String.fromCharCode(i));
      }
      return keys;
    }
    var upperCaseAlphabet = makeKeyRange(65, 26);
    var lowerCaseAlphabet = makeKeyRange(97, 26);
    var numbers = makeKeyRange(48, 10);
    var validMarks = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['<', '>']);
    var validRegisters = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['-', '"', '.', ':', '/']);

    function isLine(cm, line) {
      return line >= cm.firstLine() && line <= cm.lastLine();
    }
    function isLowerCase(k) {
      return (/^[a-z]$/).test(k);
    }
    function isMatchableSymbol(k) {
      return '()[]{}'.indexOf(k) != -1;
    }
    function isNumber(k) {
      return numberRegex.test(k);
    }
    function isUpperCase(k) {
      return (/^[A-Z]$/).test(k);
    }
    function isWhiteSpaceString(k) {
      return (/^\s*$/).test(k);
    }
    function isEndOfSentenceSymbol(k) {
      return '.?!'.indexOf(k) != -1;
    }
    function inArray(val, arr) {
      for (var i = 0; i < arr.length; i++) {
        if (arr[i] == val) {
          return true;
        }
      }
      return false;
    }

    var options = {};
    function defineOption(name, defaultValue, type, aliases, callback) {
      if (defaultValue === undefined && !callback) {
        throw Error('defaultValue is required unless callback is provided');
      }
      if (!type) { type = 'string'; }
      options[name] = {
        type: type,
        defaultValue: defaultValue,
        callback: callback
      };
      if (aliases) {
        for (var i = 0; i < aliases.length; i++) {
          options[aliases[i]] = options[name];
        }
      }
      if (defaultValue) {
        setOption(name, defaultValue);
      }
    }

    function setOption(name, value, cm, cfg) {
      var option = options[name];
      cfg = cfg || {};
      var scope = cfg.scope;
      if (!option) {
        return new Error('Unknown option: ' + name);
      }
      if (option.type == 'boolean') {
        if (value && value !== true) {
          return new Error('Invalid argument: ' + name + '=' + value);
        } else if (value !== false) {
          // Boolean options are set to true if value is not defined.
          value = true;
        }
      }
      if (option.callback) {
        if (scope !== 'local') {
          option.callback(value, undefined);
        }
        if (scope !== 'global' && cm) {
          option.callback(value, cm);
        }
      } else {
        if (scope !== 'local') {
          option.value = option.type == 'boolean' ? !!value : value;
        }
        if (scope !== 'global' && cm) {
          cm.state.vim.options[name] = {value: value};
        }
      }
    }

    function getOption(name, cm, cfg) {
      var option = options[name];
      cfg = cfg || {};
      var scope = cfg.scope;
      if (!option) {
        return new Error('Unknown option: ' + name);
      }
      if (option.callback) {
        var local = cm && option.callback(undefined, cm);
        if (scope !== 'global' && local !== undefined) {
          return local;
        }
        if (scope !== 'local') {
          return option.callback();
        }
        return;
      } else {
        var local = (scope !== 'global') && (cm && cm.state.vim.options[name]);
        return (local || (scope !== 'local') && option || {}).value;
      }
    }

    defineOption('filetype', undefined, 'string', ['ft'], function(name, cm) {
      // Option is local. Do nothing for global.
      if (cm === undefined) {
        return;
      }
      // The 'filetype' option proxies to the CodeMirror 'mode' option.
      if (name === undefined) {
        var mode = cm.getOption('mode');
        return mode == 'null' ? '' : mode;
      } else {
        var mode = name == '' ? 'null' : name;
        cm.setOption('mode', mode);
      }
    });

    var createCircularJumpList = function() {
      var size = 100;
      var pointer = -1;
      var head = 0;
      var tail = 0;
      var buffer = new Array(size);
      function add(cm, oldCur, newCur) {
        var current = pointer % size;
        var curMark = buffer[current];
        function useNextSlot(cursor) {
          var next = ++pointer % size;
          var trashMark = buffer[next];
          if (trashMark) {
            trashMark.clear();
          }
          buffer[next] = cm.setBookmark(cursor);
        }
        if (curMark) {
          var markPos = curMark.find();
          // avoid recording redundant cursor position
          if (markPos && !cursorEqual(markPos, oldCur)) {
            useNextSlot(oldCur);
          }
        } else {
          useNextSlot(oldCur);
        }
        useNextSlot(newCur);
        head = pointer;
        tail = pointer - size + 1;
        if (tail < 0) {
          tail = 0;
        }
      }
      function move(cm, offset) {
        pointer += offset;
        if (pointer > head) {
          pointer = head;
        } else if (pointer < tail) {
          pointer = tail;
        }
        var mark = buffer[(size + pointer) % size];
        // skip marks that are temporarily removed from text buffer
        if (mark && !mark.find()) {
          var inc = offset > 0 ? 1 : -1;
          var newCur;
          var oldCur = cm.getCursor();
          do {
            pointer += inc;
            mark = buffer[(size + pointer) % size];
            // skip marks that are the same as current position
            if (mark &&
                (newCur = mark.find()) &&
                !cursorEqual(oldCur, newCur)) {
              break;
            }
          } while (pointer < head && pointer > tail);
        }
        return mark;
      }
      return {
        cachedCursor: undefined, //used for # and * jumps
        add: add,
        move: move
      };
    };

    // Returns an object to track the changes associated insert mode.  It
    // clones the object that is passed in, or creates an empty object one if
    // none is provided.
    var createInsertModeChanges = function(c) {
      if (c) {
        // Copy construction
        return {
          changes: c.changes,
          expectCursorActivityForChange: c.expectCursorActivityForChange
        };
      }
      return {
        // Change list
        changes: [],
        // Set to true on change, false on cursorActivity.
        expectCursorActivityForChange: false
      };
    };

    function MacroModeState() {
      this.latestRegister = undefined;
      this.isPlaying = false;
      this.isRecording = false;
      this.replaySearchQueries = [];
      this.onRecordingDone = undefined;
      this.lastInsertModeChanges = createInsertModeChanges();
    }
    MacroModeState.prototype = {
      exitMacroRecordMode: function() {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.onRecordingDone) {
          macroModeState.onRecordingDone(); // close dialog
        }
        macroModeState.onRecordingDone = undefined;
        macroModeState.isRecording = false;
      },
      enterMacroRecordMode: function(cm, registerName) {
        var register =
            vimGlobalState.registerController.getRegister(registerName);
        if (register) {
          register.clear();
          this.latestRegister = registerName;
          if (cm.openDialog) {
            this.onRecordingDone = cm.openDialog(
                '(recording)['+registerName+']', null, {bottom:true});
          }
          this.isRecording = true;
        }
      }
    };

    function maybeInitVimState(cm) {
      if (!cm.state.vim) {
        // Store instance state in the CodeMirror object.
        cm.state.vim = {
          inputState: new InputState(),
          // Vim's input state that triggered the last edit, used to repeat
          // motions and operators with '.'.
          lastEditInputState: undefined,
          // Vim's action command before the last edit, used to repeat actions
          // with '.' and insert mode repeat.
          lastEditActionCommand: undefined,
          // When using jk for navigation, if you move from a longer line to a
          // shorter line, the cursor may clip to the end of the shorter line.
          // If j is pressed again and cursor goes to the next line, the
          // cursor should go back to its horizontal position on the longer
          // line if it can. This is to keep track of the horizontal position.
          lastHPos: -1,
          // Doing the same with screen-position for gj/gk
          lastHSPos: -1,
          // The last motion command run. Cleared if a non-motion command gets
          // executed in between.
          lastMotion: null,
          marks: {},
          // Mark for rendering fake cursor for visual mode.
          fakeCursor: null,
          insertMode: false,
          // Repeat count for changes made in insert mode, triggered by key
          // sequences like 3,i. Only exists when insertMode is true.
          insertModeRepeat: undefined,
          visualMode: false,
          // If we are in visual line mode. No effect if visualMode is false.
          visualLine: false,
          visualBlock: false,
          lastSelection: null,
          lastPastedText: null,
          sel: {},
          // Buffer-local/window-local values of vim options.
          options: {}
        };
      }
      return cm.state.vim;
    }
    var vimGlobalState;
    function resetVimGlobalState() {
      vimGlobalState = {
        // The current search query.
        searchQuery: null,
        // Whether we are searching backwards.
        searchIsReversed: false,
        // Replace part of the last substituted pattern
        lastSubstituteReplacePart: undefined,
        jumpList: createCircularJumpList(),
        macroModeState: new MacroModeState,
        // Recording latest f, t, F or T motion command.
        lastCharacterSearch: {increment:0, forward:true, selectedCharacter:''},
        registerController: new RegisterController({}),
        // search history buffer
        searchHistoryController: new HistoryController(),
        // ex Command history buffer
        exCommandHistoryController : new HistoryController()
      };
      for (var optionName in options) {
        var option = options[optionName];
        option.value = option.defaultValue;
      }
    }

    var lastInsertModeKeyTimer;
    var vimApi= {
      buildKeyMap: function() {
        // TODO: Convert keymap into dictionary format for fast lookup.
      },
      // Testing hook, though it might be useful to expose the register
      // controller anyways.
      getRegisterController: function() {
        return vimGlobalState.registerController;
      },
      // Testing hook.
      resetVimGlobalState_: resetVimGlobalState,

      // Testing hook.
      getVimGlobalState_: function() {
        return vimGlobalState;
      },

      // Testing hook.
      maybeInitVimState_: maybeInitVimState,

      suppressErrorLogging: false,

      InsertModeKey: InsertModeKey,
      map: function(lhs, rhs, ctx) {
        // Add user defined key bindings.
        exCommandDispatcher.map(lhs, rhs, ctx);
      },
      unmap: function(lhs, ctx) {
        exCommandDispatcher.unmap(lhs, ctx);
      },
      // Non-recursive map function.
      // NOTE: This will not create mappings to key maps that aren't present
      // in the default key map. See TODO at bottom of function.
      noremap: function(lhs, rhs, ctx) {
        function toCtxArray(ctx) {
          return ctx ? [ctx] : ['normal', 'insert', 'visual'];
        }
        var ctxsToMap = toCtxArray(ctx);
        // Look through all actual defaults to find a map candidate.
        var actualLength = defaultKeymap.length, origLength = defaultKeymapLength;
        for (var i = actualLength - origLength;
             i < actualLength && ctxsToMap.length;
             i++) {
          var mapping = defaultKeymap[i];
          // Omit mappings that operate in the wrong context(s) and those of invalid type.
          if (mapping.keys == rhs &&
              (!ctx || !mapping.context || mapping.context === ctx) &&
              mapping.type.substr(0, 2) !== 'ex' &&
              mapping.type.substr(0, 3) !== 'key') {
            // Make a shallow copy of the original keymap entry.
            var newMapping = {};
            for (var key in mapping) {
              newMapping[key] = mapping[key];
            }
            // Modify it point to the new mapping with the proper context.
            newMapping.keys = lhs;
            if (ctx && !newMapping.context) {
              newMapping.context = ctx;
            }
            // Add it to the keymap with a higher priority than the original.
            this._mapCommand(newMapping);
            // Record the mapped contexts as complete.
            var mappedCtxs = toCtxArray(mapping.context);
            ctxsToMap = ctxsToMap.filter(function(el) { return mappedCtxs.indexOf(el) === -1; });
          }
        }
        // TODO: Create non-recursive keyToKey mappings for the unmapped contexts once those exist.
      },
      // Remove all user-defined mappings for the provided context.
      mapclear: function(ctx) {
        // Partition the existing keymap into user-defined and true defaults.
        var actualLength = defaultKeymap.length,
            origLength = defaultKeymapLength;
        var userKeymap = defaultKeymap.slice(0, actualLength - origLength);
        defaultKeymap = defaultKeymap.slice(actualLength - origLength);
        if (ctx) {
          // If a specific context is being cleared, we need to keep mappings
          // from all other contexts.
          for (var i = userKeymap.length - 1; i >= 0; i--) {
            var mapping = userKeymap[i];
            if (ctx !== mapping.context) {
              if (mapping.context) {
                this._mapCommand(mapping);
              } else {
                // `mapping` applies to all contexts so create keymap copies
                // for each context except the one being cleared.
                var contexts = ['normal', 'insert', 'visual'];
                for (var j in contexts) {
                  if (contexts[j] !== ctx) {
                    var newMapping = {};
                    for (var key in mapping) {
                      newMapping[key] = mapping[key];
                    }
                    newMapping.context = contexts[j];
                    this._mapCommand(newMapping);
                  }
                }
              }
            }
          }
        }
      },
      // TODO: Expose setOption and getOption as instance methods. Need to decide how to namespace
      // them, or somehow make them work with the existing CodeMirror setOption/getOption API.
      setOption: setOption,
      getOption: getOption,
      defineOption: defineOption,
      defineEx: function(name, prefix, func){
        if (!prefix) {
          prefix = name;
        } else if (name.indexOf(prefix) !== 0) {
          throw new Error('(Vim.defineEx) "'+prefix+'" is not a prefix of "'+name+'", command not registered');
        }
        exCommands[name]=func;
        exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
      },
      handleKey: function (cm, key, origin) {
        var command = this.findKey(cm, key, origin);
        if (typeof command === 'function') {
          return command();
        }
      },
      /**
       * This is the outermost function called by CodeMirror, after keys have
       * been mapped to their Vim equivalents.
       *
       * Finds a command based on the key (and cached keys if there is a
       * multi-key sequence). Returns `undefined` if no key is matched, a noop
       * function if a partial match is found (multi-key), and a function to
       * execute the bound command if a a key is matched. The function always
       * returns true.
       */
      findKey: function(cm, key, origin) {
        var vim = maybeInitVimState(cm);
        function handleMacroRecording() {
          var macroModeState = vimGlobalState.macroModeState;
          if (macroModeState.isRecording) {
            if (key == 'q') {
              macroModeState.exitMacroRecordMode();
              clearInputState(cm);
              return true;
            }
            if (origin != 'mapping') {
              logKey(macroModeState, key);
            }
          }
        }
        function handleEsc() {
          if (key == '<Esc>') {
            // Clear input state and get back to normal mode.
            clearInputState(cm);
            if (vim.visualMode) {
              exitVisualMode(cm);
            } else if (vim.insertMode) {
              exitInsertMode(cm);
            }
            return true;
          }
        }
        function doKeyToKey(keys) {
          // TODO: prevent infinite recursion.
          var match;
          while (keys) {
            // Pull off one command key, which is either a single character
            // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
            match = (/<\w+-.+?>|<\w+>|./).exec(keys);
            key = match[0];
            keys = keys.substring(match.index + key.length);
            CodeMirror.Vim.handleKey(cm, key, 'mapping');
          }
        }

        function handleKeyInsertMode() {
          if (handleEsc()) { return true; }
          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
          var keysAreChars = key.length == 1;
          var match = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
          // Need to check all key substrings in insert mode.
          while (keys.length > 1 && match.type != 'full') {
            var keys = vim.inputState.keyBuffer = keys.slice(1);
            var thisMatch = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
            if (thisMatch.type != 'none') { match = thisMatch; }
          }
          if (match.type == 'none') { clearInputState(cm); return false; }
          else if (match.type == 'partial') {
            if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
            lastInsertModeKeyTimer = window.setTimeout(
              function() { if (vim.insertMode && vim.inputState.keyBuffer) { clearInputState(cm); } },
              getOption('insertModeEscKeysTimeout'));
            return !keysAreChars;
          }

          if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
          if (keysAreChars) {
            var selections = cm.listSelections();
            for (var i = 0; i < selections.length; i++) {
              var here = selections[i].head;
              cm.replaceRange('', offsetCursor(here, 0, -(keys.length - 1)), here, '+input');
            }
            vimGlobalState.macroModeState.lastInsertModeChanges.changes.pop();
          }
          clearInputState(cm);
          return match.command;
        }

        function handleKeyNonInsertMode() {
          if (handleMacroRecording() || handleEsc()) { return true; }

          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
          if (/^[1-9]\d*$/.test(keys)) { return true; }

          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
          if (!keysMatcher) { clearInputState(cm); return false; }
          var context = vim.visualMode ? 'visual' :
                                         'normal';
          var match = commandDispatcher.matchCommand(keysMatcher[2] || keysMatcher[1], defaultKeymap, vim.inputState, context);
          if (match.type == 'none') { clearInputState(cm); return false; }
          else if (match.type == 'partial') { return true; }

          vim.inputState.keyBuffer = '';
          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
          if (keysMatcher[1] && keysMatcher[1] != '0') {
            vim.inputState.pushRepeatDigit(keysMatcher[1]);
          }
          return match.command;
        }

        var command;
        if (vim.insertMode) { command = handleKeyInsertMode(); }
        else { command = handleKeyNonInsertMode(); }
        if (command === false) {
          return !vim.insertMode && key.length === 1 ? function() { return true; } : undefined;
        } else if (command === true) {
          // TODO: Look into using CodeMirror's multi-key handling.
          // Return no-op since we are caching the key. Counts as handled, but
          // don't want act on it just yet.
          return function() { return true; };
        } else {
          return function() {
            return cm.operation(function() {
              cm.curOp.isVimOp = true;
              try {
                if (command.type == 'keyToKey') {
                  doKeyToKey(command.toKeys);
                } else {
                  commandDispatcher.processCommand(cm, vim, command);
                }
              } catch (e) {
                // clear VIM state in case it's in a bad state.
                cm.state.vim = undefined;
                maybeInitVimState(cm);
                if (!CodeMirror.Vim.suppressErrorLogging) {
                  console['log'](e);
                }
                throw e;
              }
              return true;
            });
          };
        }
      },
      handleEx: function(cm, input) {
        exCommandDispatcher.processCommand(cm, input);
      },

      defineMotion: defineMotion,
      defineAction: defineAction,
      defineOperator: defineOperator,
      mapCommand: mapCommand,
      _mapCommand: _mapCommand,

      defineRegister: defineRegister,

      exitVisualMode: exitVisualMode,
      exitInsertMode: exitInsertMode
    };

    // Represents the current input state.
    function InputState() {
      this.prefixRepeat = [];
      this.motionRepeat = [];

      this.operator = null;
      this.operatorArgs = null;
      this.motion = null;
      this.motionArgs = null;
      this.keyBuffer = []; // For matching multi-key commands.
      this.registerName = null; // Defaults to the unnamed register.
    }
    InputState.prototype.pushRepeatDigit = function(n) {
      if (!this.operator) {
        this.prefixRepeat = this.prefixRepeat.concat(n);
      } else {
        this.motionRepeat = this.motionRepeat.concat(n);
      }
    };
    InputState.prototype.getRepeat = function() {
      var repeat = 0;
      if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
        repeat = 1;
        if (this.prefixRepeat.length > 0) {
          repeat *= parseInt(this.prefixRepeat.join(''), 10);
        }
        if (this.motionRepeat.length > 0) {
          repeat *= parseInt(this.motionRepeat.join(''), 10);
        }
      }
      return repeat;
    };

    function clearInputState(cm, reason) {
      cm.state.vim.inputState = new InputState();
      CodeMirror.signal(cm, 'vim-command-done', reason);
    }

    /*
     * Register stores information about copy and paste registers.  Besides
     * text, a register must store whether it is linewise (i.e., when it is
     * pasted, should it insert itself into a new line, or should the text be
     * inserted at the cursor position.)
     */
    function Register(text, linewise, blockwise) {
      this.clear();
      this.keyBuffer = [text || ''];
      this.insertModeChanges = [];
      this.searchQueries = [];
      this.linewise = !!linewise;
      this.blockwise = !!blockwise;
    }
    Register.prototype = {
      setText: function(text, linewise, blockwise) {
        this.keyBuffer = [text || ''];
        this.linewise = !!linewise;
        this.blockwise = !!blockwise;
      },
      pushText: function(text, linewise) {
        // if this register has ever been set to linewise, use linewise.
        if (linewise) {
          if (!this.linewise) {
            this.keyBuffer.push('\n');
          }
          this.linewise = true;
        }
        this.keyBuffer.push(text);
      },
      pushInsertModeChanges: function(changes) {
        this.insertModeChanges.push(createInsertModeChanges(changes));
      },
      pushSearchQuery: function(query) {
        this.searchQueries.push(query);
      },
      clear: function() {
        this.keyBuffer = [];
        this.insertModeChanges = [];
        this.searchQueries = [];
        this.linewise = false;
      },
      toString: function() {
        return this.keyBuffer.join('');
      }
    };

    /**
     * Defines an external register.
     *
     * The name should be a single character that will be used to reference the register.
     * The register should support setText, pushText, clear, and toString(). See Register
     * for a reference implementation.
     */
    function defineRegister(name, register) {
      var registers = vimGlobalState.registerController.registers;
      if (!name || name.length != 1) {
        throw Error('Register name must be 1 character');
      }
      if (registers[name]) {
        throw Error('Register already defined ' + name);
      }
      registers[name] = register;
      validRegisters.push(name);
    }

    /*
     * vim registers allow you to keep many independent copy and paste buffers.
     * See http://usevim.com/2012/04/13/registers/ for an introduction.
     *
     * RegisterController keeps the state of all the registers.  An initial
     * state may be passed in.  The unnamed register '"' will always be
     * overridden.
     */
    function RegisterController(registers) {
      this.registers = registers;
      this.unnamedRegister = registers['"'] = new Register();
      registers['.'] = new Register();
      registers[':'] = new Register();
      registers['/'] = new Register();
    }
    RegisterController.prototype = {
      pushText: function(registerName, operator, text, linewise, blockwise) {
        if (linewise && text.charAt(text.length - 1) !== '\n'){
          text += '\n';
        }
        // Lowercase and uppercase registers refer to the same register.
        // Uppercase just means append.
        var register = this.isValidRegister(registerName) ?
            this.getRegister(registerName) : null;
        // if no register/an invalid register was specified, things go to the
        // default registers
        if (!register) {
          switch (operator) {
            case 'yank':
              // The 0 register contains the text from the most recent yank.
              this.registers['0'] = new Register(text, linewise, blockwise);
              break;
            case 'delete':
            case 'change':
              if (text.indexOf('\n') == -1) {
                // Delete less than 1 line. Update the small delete register.
                this.registers['-'] = new Register(text, linewise);
              } else {
                // Shift down the contents of the numbered registers and put the
                // deleted text into register 1.
                this.shiftNumericRegisters_();
                this.registers['1'] = new Register(text, linewise);
              }
              break;
          }
          // Make sure the unnamed register is set to what just happened
          this.unnamedRegister.setText(text, linewise, blockwise);
          return;
        }

        // If we've gotten to this point, we've actually specified a register
        var append = isUpperCase(registerName);
        if (append) {
          register.pushText(text, linewise);
        } else {
          register.setText(text, linewise, blockwise);
        }
        // The unnamed register always has the same value as the last used
        // register.
        this.unnamedRegister.setText(register.toString(), linewise);
      },
      // Gets the register named @name.  If one of @name doesn't already exist,
      // create it.  If @name is invalid, return the unnamedRegister.
      getRegister: function(name) {
        if (!this.isValidRegister(name)) {
          return this.unnamedRegister;
        }
        name = name.toLowerCase();
        if (!this.registers[name]) {
          this.registers[name] = new Register();
        }
        return this.registers[name];
      },
      isValidRegister: function(name) {
        return name && inArray(name, validRegisters);
      },
      shiftNumericRegisters_: function() {
        for (var i = 9; i >= 2; i--) {
          this.registers[i] = this.getRegister('' + (i - 1));
        }
      }
    };
    function HistoryController() {
        this.historyBuffer = [];
        this.iterator = 0;
        this.initialPrefix = null;
    }
    HistoryController.prototype = {
      // the input argument here acts a user entered prefix for a small time
      // until we start autocompletion in which case it is the autocompleted.
      nextMatch: function (input, up) {
        var historyBuffer = this.historyBuffer;
        var dir = up ? -1 : 1;
        if (this.initialPrefix === null) this.initialPrefix = input;
        for (var i = this.iterator + dir; up ? i >= 0 : i < historyBuffer.length; i+= dir) {
          var element = historyBuffer[i];
          for (var j = 0; j <= element.length; j++) {
            if (this.initialPrefix == element.substring(0, j)) {
              this.iterator = i;
              return element;
            }
          }
        }
        // should return the user input in case we reach the end of buffer.
        if (i >= historyBuffer.length) {
          this.iterator = historyBuffer.length;
          return this.initialPrefix;
        }
        // return the last autocompleted query or exCommand as it is.
        if (i < 0 ) return input;
      },
      pushInput: function(input) {
        var index = this.historyBuffer.indexOf(input);
        if (index > -1) this.historyBuffer.splice(index, 1);
        if (input.length) this.historyBuffer.push(input);
      },
      reset: function() {
        this.initialPrefix = null;
        this.iterator = this.historyBuffer.length;
      }
    };
    var commandDispatcher = {
      matchCommand: function(keys, keyMap, inputState, context) {
        var matches = commandMatches(keys, keyMap, context, inputState);
        if (!matches.full && !matches.partial) {
          return {type: 'none'};
        } else if (!matches.full && matches.partial) {
          return {type: 'partial'};
        }

        var bestMatch;
        for (var i = 0; i < matches.full.length; i++) {
          var match = matches.full[i];
          if (!bestMatch) {
            bestMatch = match;
          }
        }
        if (bestMatch.keys.slice(-11) == '<character>') {
          var character = lastChar(keys);
          if (!character) return {type: 'none'};
          inputState.selectedCharacter = character;
        }
        return {type: 'full', command: bestMatch};
      },
      processCommand: function(cm, vim, command) {
        vim.inputState.repeatOverride = command.repeatOverride;
        switch (command.type) {
          case 'motion':
            this.processMotion(cm, vim, command);
            break;
          case 'operator':
            this.processOperator(cm, vim, command);
            break;
          case 'operatorMotion':
            this.processOperatorMotion(cm, vim, command);
            break;
          case 'action':
            this.processAction(cm, vim, command);
            break;
          case 'search':
            this.processSearch(cm, vim, command);
            break;
          case 'ex':
          case 'keyToEx':
            this.processEx(cm, vim, command);
            break;
          default:
            break;
        }
      },
      processMotion: function(cm, vim, command) {
        vim.inputState.motion = command.motion;
        vim.inputState.motionArgs = copyArgs(command.motionArgs);
        this.evalInput(cm, vim);
      },
      processOperator: function(cm, vim, command) {
        var inputState = vim.inputState;
        if (inputState.operator) {
          if (inputState.operator == command.operator) {
            // Typing an operator twice like 'dd' makes the operator operate
            // linewise
            inputState.motion = 'expandToLine';
            inputState.motionArgs = { linewise: true };
            this.evalInput(cm, vim);
            return;
          } else {
            // 2 different operators in a row doesn't make sense.
            clearInputState(cm);
          }
        }
        inputState.operator = command.operator;
        inputState.operatorArgs = copyArgs(command.operatorArgs);
        if (vim.visualMode) {
          // Operating on a selection in visual mode. We don't need a motion.
          this.evalInput(cm, vim);
        }
      },
      processOperatorMotion: function(cm, vim, command) {
        var visualMode = vim.visualMode;
        var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
        if (operatorMotionArgs) {
          // Operator motions may have special behavior in visual mode.
          if (visualMode && operatorMotionArgs.visualLine) {
            vim.visualLine = true;
          }
        }
        this.processOperator(cm, vim, command);
        if (!visualMode) {
          this.processMotion(cm, vim, command);
        }
      },
      processAction: function(cm, vim, command) {
        var inputState = vim.inputState;
        var repeat = inputState.getRepeat();
        var repeatIsExplicit = !!repeat;
        var actionArgs = copyArgs(command.actionArgs) || {};
        if (inputState.selectedCharacter) {
          actionArgs.selectedCharacter = inputState.selectedCharacter;
        }
        // Actions may or may not have motions and operators. Do these first.
        if (command.operator) {
          this.processOperator(cm, vim, command);
        }
        if (command.motion) {
          this.processMotion(cm, vim, command);
        }
        if (command.motion || command.operator) {
          this.evalInput(cm, vim);
        }
        actionArgs.repeat = repeat || 1;
        actionArgs.repeatIsExplicit = repeatIsExplicit;
        actionArgs.registerName = inputState.registerName;
        clearInputState(cm);
        vim.lastMotion = null;
        if (command.isEdit) {
          this.recordLastEdit(vim, inputState, command);
        }
        actions[command.action](cm, actionArgs, vim);
      },
      processSearch: function(cm, vim, command) {
        if (!cm.getSearchCursor) {
          // Search depends on SearchCursor.
          return;
        }
        var forward = command.searchArgs.forward;
        var wholeWordOnly = command.searchArgs.wholeWordOnly;
        getSearchState(cm).setReversed(!forward);
        var promptPrefix = (forward) ? '/' : '?';
        var originalQuery = getSearchState(cm).getQuery();
        var originalScrollPos = cm.getScrollInfo();
        function handleQuery(query, ignoreCase, smartCase) {
          vimGlobalState.searchHistoryController.pushInput(query);
          vimGlobalState.searchHistoryController.reset();
          try {
            updateSearchQuery(cm, query, ignoreCase, smartCase);
          } catch (e) {
            showConfirm(cm, 'Invalid regex: ' + query);
            clearInputState(cm);
            return;
          }
          commandDispatcher.processMotion(cm, vim, {
            type: 'motion',
            motion: 'findNext',
            motionArgs: { forward: true, toJumplist: command.searchArgs.toJumplist }
          });
        }
        function onPromptClose(query) {
          cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
          handleQuery(query, true /** ignoreCase */, true /** smartCase */);
          var macroModeState = vimGlobalState.macroModeState;
          if (macroModeState.isRecording) {
            logSearchQuery(macroModeState, query);
          }
        }
        function onPromptKeyUp(e, query, close) {
          var keyName = CodeMirror.keyName(e), up, offset;
          if (keyName == 'Up' || keyName == 'Down') {
            up = keyName == 'Up' ? true : false;
            offset = e.target ? e.target.selectionEnd : 0;
            query = vimGlobalState.searchHistoryController.nextMatch(query, up) || '';
            close(query);
            if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
          } else {
            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
              vimGlobalState.searchHistoryController.reset();
          }
          var parsedQuery;
          try {
            parsedQuery = updateSearchQuery(cm, query,
                true /** ignoreCase */, true /** smartCase */);
          } catch (e) {
            // Swallow bad regexes for incremental search.
          }
          if (parsedQuery) {
            cm.scrollIntoView(findNext(cm, !forward, parsedQuery), 30);
          } else {
            clearSearchHighlight(cm);
            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
          }
        }
        function onPromptKeyDown(e, query, close) {
          var keyName = CodeMirror.keyName(e);
          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
              (keyName == 'Backspace' && query == '')) {
            vimGlobalState.searchHistoryController.pushInput(query);
            vimGlobalState.searchHistoryController.reset();
            updateSearchQuery(cm, originalQuery);
            clearSearchHighlight(cm);
            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
            CodeMirror.e_stop(e);
            clearInputState(cm);
            close();
            cm.focus();
          } else if (keyName == 'Up' || keyName == 'Down') {
            CodeMirror.e_stop(e);
          } else if (keyName == 'Ctrl-U') {
            // Ctrl-U clears input.
            CodeMirror.e_stop(e);
            close('');
          }
        }
        switch (command.searchArgs.querySrc) {
          case 'prompt':
            var macroModeState = vimGlobalState.macroModeState;
            if (macroModeState.isPlaying) {
              var query = macroModeState.replaySearchQueries.shift();
              handleQuery(query, true /** ignoreCase */, false /** smartCase */);
            } else {
              showPrompt(cm, {
                  onClose: onPromptClose,
                  prefix: promptPrefix,
                  desc: searchPromptDesc,
                  onKeyUp: onPromptKeyUp,
                  onKeyDown: onPromptKeyDown
              });
            }
            break;
          case 'wordUnderCursor':
            var word = expandWordUnderCursor(cm, false /** inclusive */,
                true /** forward */, false /** bigWord */,
                true /** noSymbol */);
            var isKeyword = true;
            if (!word) {
              word = expandWordUnderCursor(cm, false /** inclusive */,
                  true /** forward */, false /** bigWord */,
                  false /** noSymbol */);
              isKeyword = false;
            }
            if (!word) {
              return;
            }
            var query = cm.getLine(word.start.line).substring(word.start.ch,
                word.end.ch);
            if (isKeyword && wholeWordOnly) {
                query = '\\b' + query + '\\b';
            } else {
              query = escapeRegex(query);
            }

            // cachedCursor is used to save the old position of the cursor
            // when * or # causes vim to seek for the nearest word and shift
            // the cursor before entering the motion.
            vimGlobalState.jumpList.cachedCursor = cm.getCursor();
            cm.setCursor(word.start);

            handleQuery(query, true /** ignoreCase */, false /** smartCase */);
            break;
        }
      },
      processEx: function(cm, vim, command) {
        function onPromptClose(input) {
          // Give the prompt some time to close so that if processCommand shows
          // an error, the elements don't overlap.
          vimGlobalState.exCommandHistoryController.pushInput(input);
          vimGlobalState.exCommandHistoryController.reset();
          exCommandDispatcher.processCommand(cm, input);
        }
        function onPromptKeyDown(e, input, close) {
          var keyName = CodeMirror.keyName(e), up, offset;
          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
              (keyName == 'Backspace' && input == '')) {
            vimGlobalState.exCommandHistoryController.pushInput(input);
            vimGlobalState.exCommandHistoryController.reset();
            CodeMirror.e_stop(e);
            clearInputState(cm);
            close();
            cm.focus();
          }
          if (keyName == 'Up' || keyName == 'Down') {
            CodeMirror.e_stop(e);
            up = keyName == 'Up' ? true : false;
            offset = e.target ? e.target.selectionEnd : 0;
            input = vimGlobalState.exCommandHistoryController.nextMatch(input, up) || '';
            close(input);
            if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
          } else if (keyName == 'Ctrl-U') {
            // Ctrl-U clears input.
            CodeMirror.e_stop(e);
            close('');
          } else {
            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
              vimGlobalState.exCommandHistoryController.reset();
          }
        }
        if (command.type == 'keyToEx') {
          // Handle user defined Ex to Ex mappings
          exCommandDispatcher.processCommand(cm, command.exArgs.input);
        } else {
          if (vim.visualMode) {
            showPrompt(cm, { onClose: onPromptClose, prefix: ':', value: '\'<,\'>',
                onKeyDown: onPromptKeyDown, selectValueOnOpen: false});
          } else {
            showPrompt(cm, { onClose: onPromptClose, prefix: ':',
                onKeyDown: onPromptKeyDown});
          }
        }
      },
      evalInput: function(cm, vim) {
        // If the motion command is set, execute both the operator and motion.
        // Otherwise return.
        var inputState = vim.inputState;
        var motion = inputState.motion;
        var motionArgs = inputState.motionArgs || {};
        var operator = inputState.operator;
        var operatorArgs = inputState.operatorArgs || {};
        var registerName = inputState.registerName;
        var sel = vim.sel;
        // TODO: Make sure cm and vim selections are identical outside visual mode.
        var origHead = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.head): cm.getCursor('head'));
        var origAnchor = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.anchor) : cm.getCursor('anchor'));
        var oldHead = copyCursor(origHead);
        var oldAnchor = copyCursor(origAnchor);
        var newHead, newAnchor;
        var repeat;
        if (operator) {
          this.recordLastEdit(vim, inputState);
        }
        if (inputState.repeatOverride !== undefined) {
          // If repeatOverride is specified, that takes precedence over the
          // input state's repeat. Used by Ex mode and can be user defined.
          repeat = inputState.repeatOverride;
        } else {
          repeat = inputState.getRepeat();
        }
        if (repeat > 0 && motionArgs.explicitRepeat) {
          motionArgs.repeatIsExplicit = true;
        } else if (motionArgs.noRepeat ||
            (!motionArgs.explicitRepeat && repeat === 0)) {
          repeat = 1;
          motionArgs.repeatIsExplicit = false;
        }
        if (inputState.selectedCharacter) {
          // If there is a character input, stick it in all of the arg arrays.
          motionArgs.selectedCharacter = operatorArgs.selectedCharacter =
              inputState.selectedCharacter;
        }
        motionArgs.repeat = repeat;
        clearInputState(cm);
        if (motion) {
          var motionResult = motions[motion](cm, origHead, motionArgs, vim);
          vim.lastMotion = motions[motion];
          if (!motionResult) {
            return;
          }
          if (motionArgs.toJumplist) {
            var jumpList = vimGlobalState.jumpList;
            // if the current motion is # or *, use cachedCursor
            var cachedCursor = jumpList.cachedCursor;
            if (cachedCursor) {
              recordJumpPosition(cm, cachedCursor, motionResult);
              delete jumpList.cachedCursor;
            } else {
              recordJumpPosition(cm, origHead, motionResult);
            }
          }
          if (motionResult instanceof Array) {
            newAnchor = motionResult[0];
            newHead = motionResult[1];
          } else {
            newHead = motionResult;
          }
          // TODO: Handle null returns from motion commands better.
          if (!newHead) {
            newHead = copyCursor(origHead);
          }
          if (vim.visualMode) {
            if (!(vim.visualBlock && newHead.ch === Infinity)) {
              newHead = clipCursorToContent(cm, newHead, vim.visualBlock);
            }
            if (newAnchor) {
              newAnchor = clipCursorToContent(cm, newAnchor, true);
            }
            newAnchor = newAnchor || oldAnchor;
            sel.anchor = newAnchor;
            sel.head = newHead;
            updateCmSelection(cm);
            updateMark(cm, vim, '<',
                cursorIsBefore(newAnchor, newHead) ? newAnchor
                    : newHead);
            updateMark(cm, vim, '>',
                cursorIsBefore(newAnchor, newHead) ? newHead
                    : newAnchor);
          } else if (!operator) {
            newHead = clipCursorToContent(cm, newHead);
            cm.setCursor(newHead.line, newHead.ch);
          }
        }
        if (operator) {
          if (operatorArgs.lastSel) {
            // Replaying a visual mode operation
            newAnchor = oldAnchor;
            var lastSel = operatorArgs.lastSel;
            var lineOffset = Math.abs(lastSel.head.line - lastSel.anchor.line);
            var chOffset = Math.abs(lastSel.head.ch - lastSel.anchor.ch);
            if (lastSel.visualLine) {
              // Linewise Visual mode: The same number of lines.
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
            } else if (lastSel.visualBlock) {
              // Blockwise Visual mode: The same number of lines and columns.
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch + chOffset);
            } else if (lastSel.head.line == lastSel.anchor.line) {
              // Normal Visual mode within one line: The same number of characters.
              newHead = Pos(oldAnchor.line, oldAnchor.ch + chOffset);
            } else {
              // Normal Visual mode with several lines: The same number of lines, in the
              // last line the same number of characters as in the last line the last time.
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
            }
            vim.visualMode = true;
            vim.visualLine = lastSel.visualLine;
            vim.visualBlock = lastSel.visualBlock;
            sel = vim.sel = {
              anchor: newAnchor,
              head: newHead
            };
            updateCmSelection(cm);
          } else if (vim.visualMode) {
            operatorArgs.lastSel = {
              anchor: copyCursor(sel.anchor),
              head: copyCursor(sel.head),
              visualBlock: vim.visualBlock,
              visualLine: vim.visualLine
            };
          }
          var curStart, curEnd, linewise, mode;
          var cmSel;
          if (vim.visualMode) {
            // Init visual op
            curStart = cursorMin(sel.head, sel.anchor);
            curEnd = cursorMax(sel.head, sel.anchor);
            linewise = vim.visualLine || operatorArgs.linewise;
            mode = vim.visualBlock ? 'block' :
                   linewise ? 'line' :
                   'char';
            cmSel = makeCmSelection(cm, {
              anchor: curStart,
              head: curEnd
            }, mode);
            if (linewise) {
              var ranges = cmSel.ranges;
              if (mode == 'block') {
                // Linewise operators in visual block mode extend to end of line
                for (var i = 0; i < ranges.length; i++) {
                  ranges[i].head.ch = lineLength(cm, ranges[i].head.line);
                }
              } else if (mode == 'line') {
                ranges[0].head = Pos(ranges[0].head.line + 1, 0);
              }
            }
          } else {
            // Init motion op
            curStart = copyCursor(newAnchor || oldAnchor);
            curEnd = copyCursor(newHead || oldHead);
            if (cursorIsBefore(curEnd, curStart)) {
              var tmp = curStart;
              curStart = curEnd;
              curEnd = tmp;
            }
            linewise = motionArgs.linewise || operatorArgs.linewise;
            if (linewise) {
              // Expand selection to entire line.
              expandSelectionToLine(cm, curStart, curEnd);
            } else if (motionArgs.forward) {
              // Clip to trailing newlines only if the motion goes forward.
              clipToLine(cm, curStart, curEnd);
            }
            mode = 'char';
            var exclusive = !motionArgs.inclusive || linewise;
            cmSel = makeCmSelection(cm, {
              anchor: curStart,
              head: curEnd
            }, mode, exclusive);
          }
          cm.setSelections(cmSel.ranges, cmSel.primary);
          vim.lastMotion = null;
          operatorArgs.repeat = repeat; // For indent in visual mode.
          operatorArgs.registerName = registerName;
          // Keep track of linewise as it affects how paste and change behave.
          operatorArgs.linewise = linewise;
          var operatorMoveTo = operators[operator](
            cm, operatorArgs, cmSel.ranges, oldAnchor, newHead);
          if (vim.visualMode) {
            exitVisualMode(cm, operatorMoveTo != null);
          }
          if (operatorMoveTo) {
            cm.setCursor(operatorMoveTo);
          }
        }
      },
      recordLastEdit: function(vim, inputState, actionCommand) {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.isPlaying) { return; }
        vim.lastEditInputState = inputState;
        vim.lastEditActionCommand = actionCommand;
        macroModeState.lastInsertModeChanges.changes = [];
        macroModeState.lastInsertModeChanges.expectCursorActivityForChange = false;
      }
    };

    /**
     * typedef {Object{line:number,ch:number}} Cursor An object containing the
     *     position of the cursor.
     */
    // All of the functions below return Cursor objects.
    var motions = {
      moveToTopLine: function(cm, _head, motionArgs) {
        var line = getUserVisibleLines(cm).top + motionArgs.repeat -1;
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      moveToMiddleLine: function(cm) {
        var range = getUserVisibleLines(cm);
        var line = Math.floor((range.top + range.bottom) * 0.5);
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      moveToBottomLine: function(cm, _head, motionArgs) {
        var line = getUserVisibleLines(cm).bottom - motionArgs.repeat +1;
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      expandToLine: function(_cm, head, motionArgs) {
        // Expands forward to end of line, and then to next line if repeat is
        // >1. Does not handle backward motion!
        var cur = head;
        return Pos(cur.line + motionArgs.repeat - 1, Infinity);
      },
      findNext: function(cm, _head, motionArgs) {
        var state = getSearchState(cm);
        var query = state.getQuery();
        if (!query) {
          return;
        }
        var prev = !motionArgs.forward;
        // If search is initiated with ? instead of /, negate direction.
        prev = (state.isReversed()) ? !prev : prev;
        highlightSearchMatches(cm, query);
        return findNext(cm, prev/** prev */, query, motionArgs.repeat);
      },
      goToMark: function(cm, _head, motionArgs, vim) {
        var pos = getMarkPos(cm, vim, motionArgs.selectedCharacter);
        if (pos) {
          return motionArgs.linewise ? { line: pos.line, ch: findFirstNonWhiteSpaceCharacter(cm.getLine(pos.line)) } : pos;
        }
        return null;
      },
      moveToOtherHighlightedEnd: function(cm, _head, motionArgs, vim) {
        if (vim.visualBlock && motionArgs.sameLine) {
          var sel = vim.sel;
          return [
            clipCursorToContent(cm, Pos(sel.anchor.line, sel.head.ch)),
            clipCursorToContent(cm, Pos(sel.head.line, sel.anchor.ch))
          ];
        } else {
          return ([vim.sel.head, vim.sel.anchor]);
        }
      },
      jumpToMark: function(cm, head, motionArgs, vim) {
        var best = head;
        for (var i = 0; i < motionArgs.repeat; i++) {
          var cursor = best;
          for (var key in vim.marks) {
            if (!isLowerCase(key)) {
              continue;
            }
            var mark = vim.marks[key].find();
            var isWrongDirection = (motionArgs.forward) ?
              cursorIsBefore(mark, cursor) : cursorIsBefore(cursor, mark);

            if (isWrongDirection) {
              continue;
            }
            if (motionArgs.linewise && (mark.line == cursor.line)) {
              continue;
            }

            var equal = cursorEqual(cursor, best);
            var between = (motionArgs.forward) ?
              cursorIsBetween(cursor, mark, best) :
              cursorIsBetween(best, mark, cursor);

            if (equal || between) {
              best = mark;
            }
          }
        }

        if (motionArgs.linewise) {
          // Vim places the cursor on the first non-whitespace character of
          // the line if there is one, else it places the cursor at the end
          // of the line, regardless of whether a mark was found.
          best = Pos(best.line, findFirstNonWhiteSpaceCharacter(cm.getLine(best.line)));
        }
        return best;
      },
      moveByCharacters: function(_cm, head, motionArgs) {
        var cur = head;
        var repeat = motionArgs.repeat;
        var ch = motionArgs.forward ? cur.ch + repeat : cur.ch - repeat;
        return Pos(cur.line, ch);
      },
      moveByLines: function(cm, head, motionArgs, vim) {
        var cur = head;
        var endCh = cur.ch;
        // Depending what our last motion was, we may want to do different
        // things. If our last motion was moving vertically, we want to
        // preserve the HPos from our last horizontal move.  If our last motion
        // was going to the end of a line, moving vertically we should go to
        // the end of the line, etc.
        switch (vim.lastMotion) {
          case this.moveByLines:
          case this.moveByDisplayLines:
          case this.moveByScroll:
          case this.moveToColumn:
          case this.moveToEol:
            endCh = vim.lastHPos;
            break;
          default:
            vim.lastHPos = endCh;
        }
        var repeat = motionArgs.repeat+(motionArgs.repeatOffset||0);
        var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
        var first = cm.firstLine();
        var last = cm.lastLine();
        // Vim go to line begin or line end when cursor at first/last line and
        // move to previous/next line is triggered.
        if (line < first && cur.line == first){
          return this.moveToStartOfLine(cm, head, motionArgs, vim);
        }else if (line > last && cur.line == last){
            return this.moveToEol(cm, head, motionArgs, vim);
        }
        if (motionArgs.toFirstChar){
          endCh=findFirstNonWhiteSpaceCharacter(cm.getLine(line));
          vim.lastHPos = endCh;
        }
        vim.lastHSPos = cm.charCoords(Pos(line, endCh),'div').left;
        return Pos(line, endCh);
      },
      moveByDisplayLines: function(cm, head, motionArgs, vim) {
        var cur = head;
        switch (vim.lastMotion) {
          case this.moveByDisplayLines:
          case this.moveByScroll:
          case this.moveByLines:
          case this.moveToColumn:
          case this.moveToEol:
            break;
          default:
            vim.lastHSPos = cm.charCoords(cur,'div').left;
        }
        var repeat = motionArgs.repeat;
        var res=cm.findPosV(cur,(motionArgs.forward ? repeat : -repeat),'line',vim.lastHSPos);
        if (res.hitSide) {
          if (motionArgs.forward) {
            var lastCharCoords = cm.charCoords(res, 'div');
            var goalCoords = { top: lastCharCoords.top + 8, left: vim.lastHSPos };
            var res = cm.coordsChar(goalCoords, 'div');
          } else {
            var resCoords = cm.charCoords(Pos(cm.firstLine(), 0), 'div');
            resCoords.left = vim.lastHSPos;
            res = cm.coordsChar(resCoords, 'div');
          }
        }
        vim.lastHPos = res.ch;
        return res;
      },
      moveByPage: function(cm, head, motionArgs) {
        // CodeMirror only exposes functions that move the cursor page down, so
        // doing this bad hack to move the cursor and move it back. evalInput
        // will move the cursor to where it should be in the end.
        var curStart = head;
        var repeat = motionArgs.repeat;
        return cm.findPosV(curStart, (motionArgs.forward ? repeat : -repeat), 'page');
      },
      moveByParagraph: function(cm, head, motionArgs) {
        var dir = motionArgs.forward ? 1 : -1;
        return findParagraph(cm, head, motionArgs.repeat, dir);
      },
      moveBySentence: function(cm, head, motionArgs) {
        var dir = motionArgs.forward ? 1 : -1;
        return findSentence(cm, head, motionArgs.repeat, dir);
      },
      moveByScroll: function(cm, head, motionArgs, vim) {
        var scrollbox = cm.getScrollInfo();
        var curEnd = null;
        var repeat = motionArgs.repeat;
        if (!repeat) {
          repeat = scrollbox.clientHeight / (2 * cm.defaultTextHeight());
        }
        var orig = cm.charCoords(head, 'local');
        motionArgs.repeat = repeat;
        var curEnd = motions.moveByDisplayLines(cm, head, motionArgs, vim);
        if (!curEnd) {
          return null;
        }
        var dest = cm.charCoords(curEnd, 'local');
        cm.scrollTo(null, scrollbox.top + dest.top - orig.top);
        return curEnd;
      },
      moveByWords: function(cm, head, motionArgs) {
        return moveToWord(cm, head, motionArgs.repeat, !!motionArgs.forward,
            !!motionArgs.wordEnd, !!motionArgs.bigWord);
      },
      moveTillCharacter: function(cm, _head, motionArgs) {
        var repeat = motionArgs.repeat;
        var curEnd = moveToCharacter(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter);
        var increment = motionArgs.forward ? -1 : 1;
        recordLastCharacterSearch(increment, motionArgs);
        if (!curEnd) return null;
        curEnd.ch += increment;
        return curEnd;
      },
      moveToCharacter: function(cm, head, motionArgs) {
        var repeat = motionArgs.repeat;
        recordLastCharacterSearch(0, motionArgs);
        return moveToCharacter(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter) || head;
      },
      moveToSymbol: function(cm, head, motionArgs) {
        var repeat = motionArgs.repeat;
        return findSymbol(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter) || head;
      },
      moveToColumn: function(cm, head, motionArgs, vim) {
        var repeat = motionArgs.repeat;
        // repeat is equivalent to which column we want to move to!
        vim.lastHPos = repeat - 1;
        vim.lastHSPos = cm.charCoords(head,'div').left;
        return moveToColumn(cm, repeat);
      },
      moveToEol: function(cm, head, motionArgs, vim) {
        var cur = head;
        vim.lastHPos = Infinity;
        var retval= Pos(cur.line + motionArgs.repeat - 1, Infinity);
        var end=cm.clipPos(retval);
        end.ch--;
        vim.lastHSPos = cm.charCoords(end,'div').left;
        return retval;
      },
      moveToFirstNonWhiteSpaceCharacter: function(cm, head) {
        // Go to the start of the line where the text begins, or the end for
        // whitespace-only lines
        var cursor = head;
        return Pos(cursor.line,
                   findFirstNonWhiteSpaceCharacter(cm.getLine(cursor.line)));
      },
      moveToMatchedSymbol: function(cm, head) {
        var cursor = head;
        var line = cursor.line;
        var ch = cursor.ch;
        var lineText = cm.getLine(line);
        var symbol;
        for (; ch < lineText.length; ch++) {
          symbol = lineText.charAt(ch);
          if (symbol && isMatchableSymbol(symbol)) {
            var style = cm.getTokenTypeAt(Pos(line, ch + 1));
            if (style !== "string" && style !== "comment") {
              break;
            }
          }
        }
        if (ch < lineText.length) {
          var matched = cm.findMatchingBracket(Pos(line, ch), {bracketRegex: /[(){}[\]<>]/});
          return matched.to;
        } else {
          return cursor;
        }
      },
      moveToStartOfLine: function(_cm, head) {
        return Pos(head.line, 0);
      },
      moveToLineOrEdgeOfDocument: function(cm, _head, motionArgs) {
        var lineNum = motionArgs.forward ? cm.lastLine() : cm.firstLine();
        if (motionArgs.repeatIsExplicit) {
          lineNum = motionArgs.repeat - cm.getOption('firstLineNumber');
        }
        return Pos(lineNum,
                   findFirstNonWhiteSpaceCharacter(cm.getLine(lineNum)));
      },
      textObjectManipulation: function(cm, head, motionArgs, vim) {
        // TODO: lots of possible exceptions that can be thrown here. Try da(
        //     outside of a () block.
        var mirroredPairs = {'(': ')', ')': '(',
                             '{': '}', '}': '{',
                             '[': ']', ']': '[',
                             '<': '>', '>': '<'};
        var selfPaired = {'\'': true, '"': true};

        var character = motionArgs.selectedCharacter;
        // 'b' refers to  '()' block.
        // 'B' refers to  '{}' block.
        if (character == 'b') {
          character = '(';
        } else if (character == 'B') {
          character = '{';
        }

        // Inclusive is the difference between a and i
        // TODO: Instead of using the additional text object map to perform text
        //     object operations, merge the map into the defaultKeyMap and use
        //     motionArgs to define behavior. Define separate entries for 'aw',
        //     'iw', 'a[', 'i[', etc.
        var inclusive = !motionArgs.textObjectInner;

        var tmp;
        if (mirroredPairs[character]) {
          tmp = selectCompanionObject(cm, head, character, inclusive);
        } else if (selfPaired[character]) {
          tmp = findBeginningAndEnd(cm, head, character, inclusive);
        } else if (character === 'W') {
          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
                                                     true /** bigWord */);
        } else if (character === 'w') {
          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
                                                     false /** bigWord */);
        } else if (character === 'p') {
          tmp = findParagraph(cm, head, motionArgs.repeat, 0, inclusive);
          motionArgs.linewise = true;
          if (vim.visualMode) {
            if (!vim.visualLine) { vim.visualLine = true; }
          } else {
            var operatorArgs = vim.inputState.operatorArgs;
            if (operatorArgs) { operatorArgs.linewise = true; }
            tmp.end.line--;
          }
        } else {
          // No text object defined for this, don't move.
          return null;
        }

        if (!cm.state.vim.visualMode) {
          return [tmp.start, tmp.end];
        } else {
          return expandSelection(cm, tmp.start, tmp.end);
        }
      },

      repeatLastCharacterSearch: function(cm, head, motionArgs) {
        var lastSearch = vimGlobalState.lastCharacterSearch;
        var repeat = motionArgs.repeat;
        var forward = motionArgs.forward === lastSearch.forward;
        var increment = (lastSearch.increment ? 1 : 0) * (forward ? -1 : 1);
        cm.moveH(-increment, 'char');
        motionArgs.inclusive = forward ? true : false;
        var curEnd = moveToCharacter(cm, repeat, forward, lastSearch.selectedCharacter);
        if (!curEnd) {
          cm.moveH(increment, 'char');
          return head;
        }
        curEnd.ch += increment;
        return curEnd;
      }
    };

    function defineMotion(name, fn) {
      motions[name] = fn;
    }

    function fillArray(val, times) {
      var arr = [];
      for (var i = 0; i < times; i++) {
        arr.push(val);
      }
      return arr;
    }
    /**
     * An operator acts on a text selection. It receives the list of selections
     * as input. The corresponding CodeMirror selection is guaranteed to
    * match the input selection.
     */
    var operators = {
      change: function(cm, args, ranges) {
        var finalHead, text;
        var vim = cm.state.vim;
        vimGlobalState.macroModeState.lastInsertModeChanges.inVisualBlock = vim.visualBlock;
        if (!vim.visualMode) {
          var anchor = ranges[0].anchor,
              head = ranges[0].head;
          text = cm.getRange(anchor, head);
          var lastState = vim.lastEditInputState || {};
          if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
            // Exclude trailing whitespace if the range is not all whitespace.
            var match = (/\s+$/).exec(text);
            if (match && lastState.motionArgs && lastState.motionArgs.forward) {
              head = offsetCursor(head, 0, - match[0].length);
              text = text.slice(0, - match[0].length);
            }
          }
          var prevLineEnd = new Pos(anchor.line - 1, Number.MAX_VALUE);
          var wasLastLine = cm.firstLine() == cm.lastLine();
          if (head.line > cm.lastLine() && args.linewise && !wasLastLine) {
            cm.replaceRange('', prevLineEnd, head);
          } else {
            cm.replaceRange('', anchor, head);
          }
          if (args.linewise) {
            // Push the next line back down, if there is a next line.
            if (!wasLastLine) {
              cm.setCursor(prevLineEnd);
              CodeMirror.commands.newlineAndIndent(cm);
            }
            // make sure cursor ends up at the end of the line.
            anchor.ch = Number.MAX_VALUE;
          }
          finalHead = anchor;
        } else {
          text = cm.getSelection();
          var replacement = fillArray('', ranges.length);
          cm.replaceSelections(replacement);
          finalHead = cursorMin(ranges[0].head, ranges[0].anchor);
        }
        vimGlobalState.registerController.pushText(
            args.registerName, 'change', text,
            args.linewise, ranges.length > 1);
        actions.enterInsertMode(cm, {head: finalHead}, cm.state.vim);
      },
      // delete is a javascript keyword.
      'delete': function(cm, args, ranges) {
        var finalHead, text;
        var vim = cm.state.vim;
        if (!vim.visualBlock) {
          var anchor = ranges[0].anchor,
              head = ranges[0].head;
          if (args.linewise &&
              head.line != cm.firstLine() &&
              anchor.line == cm.lastLine() &&
              anchor.line == head.line - 1) {
            // Special case for dd on last line (and first line).
            if (anchor.line == cm.firstLine()) {
              anchor.ch = 0;
            } else {
              anchor = Pos(anchor.line - 1, lineLength(cm, anchor.line - 1));
            }
          }
          text = cm.getRange(anchor, head);
          cm.replaceRange('', anchor, head);
          finalHead = anchor;
          if (args.linewise) {
            finalHead = motions.moveToFirstNonWhiteSpaceCharacter(cm, anchor);
          }
        } else {
          text = cm.getSelection();
          var replacement = fillArray('', ranges.length);
          cm.replaceSelections(replacement);
          finalHead = ranges[0].anchor;
        }
        vimGlobalState.registerController.pushText(
            args.registerName, 'delete', text,
            args.linewise, vim.visualBlock);
        var includeLineBreak = vim.insertMode
        return clipCursorToContent(cm, finalHead, includeLineBreak);
      },
      indent: function(cm, args, ranges) {
        var vim = cm.state.vim;
        var startLine = ranges[0].anchor.line;
        var endLine = vim.visualBlock ?
          ranges[ranges.length - 1].anchor.line :
          ranges[0].head.line;
        // In visual mode, n> shifts the selection right n times, instead of
        // shifting n lines right once.
        var repeat = (vim.visualMode) ? args.repeat : 1;
        if (args.linewise) {
          // The only way to delete a newline is to delete until the start of
          // the next line, so in linewise mode evalInput will include the next
          // line. We don't want this in indent, so we go back a line.
          endLine--;
        }
        for (var i = startLine; i <= endLine; i++) {
          for (var j = 0; j < repeat; j++) {
            cm.indentLine(i, args.indentRight);
          }
        }
        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
      },
      indentAuto: function(cm, _args, ranges) {
        cm.execCommand("indentAuto");
        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
      },
      changeCase: function(cm, args, ranges, oldAnchor, newHead) {
        var selections = cm.getSelections();
        var swapped = [];
        var toLower = args.toLower;
        for (var j = 0; j < selections.length; j++) {
          var toSwap = selections[j];
          var text = '';
          if (toLower === true) {
            text = toSwap.toLowerCase();
          } else if (toLower === false) {
            text = toSwap.toUpperCase();
          } else {
            for (var i = 0; i < toSwap.length; i++) {
              var character = toSwap.charAt(i);
              text += isUpperCase(character) ? character.toLowerCase() :
                  character.toUpperCase();
            }
          }
          swapped.push(text);
        }
        cm.replaceSelections(swapped);
        if (args.shouldMoveCursor){
          return newHead;
        } else if (!cm.state.vim.visualMode && args.linewise && ranges[0].anchor.line + 1 == ranges[0].head.line) {
          return motions.moveToFirstNonWhiteSpaceCharacter(cm, oldAnchor);
        } else if (args.linewise){
          return oldAnchor;
        } else {
          return cursorMin(ranges[0].anchor, ranges[0].head);
        }
      },
      yank: function(cm, args, ranges, oldAnchor) {
        var vim = cm.state.vim;
        var text = cm.getSelection();
        var endPos = vim.visualMode
          ? cursorMin(vim.sel.anchor, vim.sel.head, ranges[0].head, ranges[0].anchor)
          : oldAnchor;
        vimGlobalState.registerController.pushText(
            args.registerName, 'yank',
            text, args.linewise, vim.visualBlock);
        return endPos;
      }
    };

    function defineOperator(name, fn) {
      operators[name] = fn;
    }

    var actions = {
      jumpListWalk: function(cm, actionArgs, vim) {
        if (vim.visualMode) {
          return;
        }
        var repeat = actionArgs.repeat;
        var forward = actionArgs.forward;
        var jumpList = vimGlobalState.jumpList;

        var mark = jumpList.move(cm, forward ? repeat : -repeat);
        var markPos = mark ? mark.find() : undefined;
        markPos = markPos ? markPos : cm.getCursor();
        cm.setCursor(markPos);
      },
      scroll: function(cm, actionArgs, vim) {
        if (vim.visualMode) {
          return;
        }
        var repeat = actionArgs.repeat || 1;
        var lineHeight = cm.defaultTextHeight();
        var top = cm.getScrollInfo().top;
        var delta = lineHeight * repeat;
        var newPos = actionArgs.forward ? top + delta : top - delta;
        var cursor = copyCursor(cm.getCursor());
        var cursorCoords = cm.charCoords(cursor, 'local');
        if (actionArgs.forward) {
          if (newPos > cursorCoords.top) {
             cursor.line += (newPos - cursorCoords.top) / lineHeight;
             cursor.line = Math.ceil(cursor.line);
             cm.setCursor(cursor);
             cursorCoords = cm.charCoords(cursor, 'local');
             cm.scrollTo(null, cursorCoords.top);
          } else {
             // Cursor stays within bounds.  Just reposition the scroll window.
             cm.scrollTo(null, newPos);
          }
        } else {
          var newBottom = newPos + cm.getScrollInfo().clientHeight;
          if (newBottom < cursorCoords.bottom) {
             cursor.line -= (cursorCoords.bottom - newBottom) / lineHeight;
             cursor.line = Math.floor(cursor.line);
             cm.setCursor(cursor);
             cursorCoords = cm.charCoords(cursor, 'local');
             cm.scrollTo(
                 null, cursorCoords.bottom - cm.getScrollInfo().clientHeight);
          } else {
             // Cursor stays within bounds.  Just reposition the scroll window.
             cm.scrollTo(null, newPos);
          }
        }
      },
      scrollToCursor: function(cm, actionArgs) {
        var lineNum = cm.getCursor().line;
        var charCoords = cm.charCoords(Pos(lineNum, 0), 'local');
        var height = cm.getScrollInfo().clientHeight;
        var y = charCoords.top;
        var lineHeight = charCoords.bottom - y;
        switch (actionArgs.position) {
          case 'center': y = y - (height / 2) + lineHeight;
            break;
          case 'bottom': y = y - height + lineHeight;
            break;
        }
        cm.scrollTo(null, y);
      },
      replayMacro: function(cm, actionArgs, vim) {
        var registerName = actionArgs.selectedCharacter;
        var repeat = actionArgs.repeat;
        var macroModeState = vimGlobalState.macroModeState;
        if (registerName == '@') {
          registerName = macroModeState.latestRegister;
        }
        while(repeat--){
          executeMacroRegister(cm, vim, macroModeState, registerName);
        }
      },
      enterMacroRecordMode: function(cm, actionArgs) {
        var macroModeState = vimGlobalState.macroModeState;
        var registerName = actionArgs.selectedCharacter;
        if (vimGlobalState.registerController.isValidRegister(registerName)) {
          macroModeState.enterMacroRecordMode(cm, registerName);
        }
      },
      toggleOverwrite: function(cm) {
        if (!cm.state.overwrite) {
          cm.toggleOverwrite(true);
          cm.setOption('keyMap', 'vim-replace');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
        } else {
          cm.toggleOverwrite(false);
          cm.setOption('keyMap', 'vim-insert');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
        }
      },
      enterInsertMode: function(cm, actionArgs, vim) {
        if (cm.getOption('readOnly')) { return; }
        vim.insertMode = true;
        vim.insertModeRepeat = actionArgs && actionArgs.repeat || 1;
        var insertAt = (actionArgs) ? actionArgs.insertAt : null;
        var sel = vim.sel;
        var head = actionArgs.head || cm.getCursor('head');
        var height = cm.listSelections().length;
        if (insertAt == 'eol') {
          head = Pos(head.line, lineLength(cm, head.line));
        } else if (insertAt == 'charAfter') {
          head = offsetCursor(head, 0, 1);
        } else if (insertAt == 'firstNonBlank') {
          head = motions.moveToFirstNonWhiteSpaceCharacter(cm, head);
        } else if (insertAt == 'startOfSelectedArea') {
          if (!vim.visualBlock) {
            if (sel.head.line < sel.anchor.line) {
              head = sel.head;
            } else {
              head = Pos(sel.anchor.line, 0);
            }
          } else {
            head = Pos(
                Math.min(sel.head.line, sel.anchor.line),
                Math.min(sel.head.ch, sel.anchor.ch));
            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
          }
        } else if (insertAt == 'endOfSelectedArea') {
          if (!vim.visualBlock) {
            if (sel.head.line >= sel.anchor.line) {
              head = offsetCursor(sel.head, 0, 1);
            } else {
              head = Pos(sel.anchor.line, 0);
            }
          } else {
            head = Pos(
                Math.min(sel.head.line, sel.anchor.line),
                Math.max(sel.head.ch + 1, sel.anchor.ch));
            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
          }
        } else if (insertAt == 'inplace') {
          if (vim.visualMode){
            return;
          }
        }
        cm.setOption('disableInput', false);
        if (actionArgs && actionArgs.replace) {
          // Handle Replace-mode as a special case of insert mode.
          cm.toggleOverwrite(true);
          cm.setOption('keyMap', 'vim-replace');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
        } else {
          cm.toggleOverwrite(false);
          cm.setOption('keyMap', 'vim-insert');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
        }
        if (!vimGlobalState.macroModeState.isPlaying) {
          // Only record if not replaying.
          cm.on('change', onChange);
          CodeMirror.on(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
        }
        if (vim.visualMode) {
          exitVisualMode(cm);
        }
        selectForInsert(cm, head, height);
      },
      toggleVisualMode: function(cm, actionArgs, vim) {
        var repeat = actionArgs.repeat;
        var anchor = cm.getCursor();
        var head;
        // TODO: The repeat should actually select number of characters/lines
        //     equal to the repeat times the size of the previous visual
        //     operation.
        if (!vim.visualMode) {
          // Entering visual mode
          vim.visualMode = true;
          vim.visualLine = !!actionArgs.linewise;
          vim.visualBlock = !!actionArgs.blockwise;
          head = clipCursorToContent(
              cm, Pos(anchor.line, anchor.ch + repeat - 1),
              true /** includeLineBreak */);
          vim.sel = {
            anchor: anchor,
            head: head
          };
          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
          updateCmSelection(cm);
          updateMark(cm, vim, '<', cursorMin(anchor, head));
          updateMark(cm, vim, '>', cursorMax(anchor, head));
        } else if (vim.visualLine ^ actionArgs.linewise ||
            vim.visualBlock ^ actionArgs.blockwise) {
          // Toggling between modes
          vim.visualLine = !!actionArgs.linewise;
          vim.visualBlock = !!actionArgs.blockwise;
          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
          updateCmSelection(cm);
        } else {
          exitVisualMode(cm);
        }
      },
      reselectLastSelection: function(cm, _actionArgs, vim) {
        var lastSelection = vim.lastSelection;
        if (vim.visualMode) {
          updateLastSelection(cm, vim);
        }
        if (lastSelection) {
          var anchor = lastSelection.anchorMark.find();
          var head = lastSelection.headMark.find();
          if (!anchor || !head) {
            // If the marks have been destroyed due to edits, do nothing.
            return;
          }
          vim.sel = {
            anchor: anchor,
            head: head
          };
          vim.visualMode = true;
          vim.visualLine = lastSelection.visualLine;
          vim.visualBlock = lastSelection.visualBlock;
          updateCmSelection(cm);
          updateMark(cm, vim, '<', cursorMin(anchor, head));
          updateMark(cm, vim, '>', cursorMax(anchor, head));
          CodeMirror.signal(cm, 'vim-mode-change', {
            mode: 'visual',
            subMode: vim.visualLine ? 'linewise' :
                     vim.visualBlock ? 'blockwise' : ''});
        }
      },
      joinLines: function(cm, actionArgs, vim) {
        var curStart, curEnd;
        if (vim.visualMode) {
          curStart = cm.getCursor('anchor');
          curEnd = cm.getCursor('head');
          if (cursorIsBefore(curEnd, curStart)) {
            var tmp = curEnd;
            curEnd = curStart;
            curStart = tmp;
          }
          curEnd.ch = lineLength(cm, curEnd.line) - 1;
        } else {
          // Repeat is the number of lines to join. Minimum 2 lines.
          var repeat = Math.max(actionArgs.repeat, 2);
          curStart = cm.getCursor();
          curEnd = clipCursorToContent(cm, Pos(curStart.line + repeat - 1,
                                               Infinity));
        }
        var finalCh = 0;
        for (var i = curStart.line; i < curEnd.line; i++) {
          finalCh = lineLength(cm, curStart.line);
          var tmp = Pos(curStart.line + 1,
                        lineLength(cm, curStart.line + 1));
          var text = cm.getRange(curStart, tmp);
          text = text.replace(/\n\s*/g, ' ');
          cm.replaceRange(text, curStart, tmp);
        }
        var curFinalPos = Pos(curStart.line, finalCh);
        if (vim.visualMode) {
          exitVisualMode(cm, false);
        }
        cm.setCursor(curFinalPos);
      },
      newLineAndEnterInsertMode: function(cm, actionArgs, vim) {
        vim.insertMode = true;
        var insertAt = copyCursor(cm.getCursor());
        if (insertAt.line === cm.firstLine() && !actionArgs.after) {
          // Special case for inserting newline before start of document.
          cm.replaceRange('\n', Pos(cm.firstLine(), 0));
          cm.setCursor(cm.firstLine(), 0);
        } else {
          insertAt.line = (actionArgs.after) ? insertAt.line :
              insertAt.line - 1;
          insertAt.ch = lineLength(cm, insertAt.line);
          cm.setCursor(insertAt);
          var newlineFn = CodeMirror.commands.newlineAndIndentContinueComment ||
              CodeMirror.commands.newlineAndIndent;
          newlineFn(cm);
        }
        this.enterInsertMode(cm, { repeat: actionArgs.repeat }, vim);
      },
      paste: function(cm, actionArgs, vim) {
        var cur = copyCursor(cm.getCursor());
        var register = vimGlobalState.registerController.getRegister(
            actionArgs.registerName);
        var text = register.toString();
        if (!text) {
          return;
        }
        if (actionArgs.matchIndent) {
          var tabSize = cm.getOption("tabSize");
          // length that considers tabs and tabSize
          var whitespaceLength = function(str) {
            var tabs = (str.split("\t").length - 1);
            var spaces = (str.split(" ").length - 1);
            return tabs * tabSize + spaces * 1;
          };
          var currentLine = cm.getLine(cm.getCursor().line);
          var indent = whitespaceLength(currentLine.match(/^\s*/)[0]);
          // chomp last newline b/c don't want it to match /^\s*/gm
          var chompedText = text.replace(/\n$/, '');
          var wasChomped = text !== chompedText;
          var firstIndent = whitespaceLength(text.match(/^\s*/)[0]);
          var text = chompedText.replace(/^\s*/gm, function(wspace) {
            var newIndent = indent + (whitespaceLength(wspace) - firstIndent);
            if (newIndent < 0) {
              return "";
            }
            else if (cm.getOption("indentWithTabs")) {
              var quotient = Math.floor(newIndent / tabSize);
              return Array(quotient + 1).join('\t');
            }
            else {
              return Array(newIndent + 1).join(' ');
            }
          });
          text += wasChomped ? "\n" : "";
        }
        if (actionArgs.repeat > 1) {
          var text = Array(actionArgs.repeat + 1).join(text);
        }
        var linewise = register.linewise;
        var blockwise = register.blockwise;
        if (linewise) {
          if(vim.visualMode) {
            text = vim.visualLine ? text.slice(0, -1) : '\n' + text.slice(0, text.length - 1) + '\n';
          } else if (actionArgs.after) {
            // Move the newline at the end to the start instead, and paste just
            // before the newline character of the line we are on right now.
            text = '\n' + text.slice(0, text.length - 1);
            cur.ch = lineLength(cm, cur.line);
          } else {
            cur.ch = 0;
          }
        } else {
          if (blockwise) {
            text = text.split('\n');
            for (var i = 0; i < text.length; i++) {
              text[i] = (text[i] == '') ? ' ' : text[i];
            }
          }
          cur.ch += actionArgs.after ? 1 : 0;
        }
        var curPosFinal;
        var idx;
        if (vim.visualMode) {
          //  save the pasted text for reselection if the need arises
          vim.lastPastedText = text;
          var lastSelectionCurEnd;
          var selectedArea = getSelectedAreaRange(cm, vim);
          var selectionStart = selectedArea[0];
          var selectionEnd = selectedArea[1];
          var selectedText = cm.getSelection();
          var selections = cm.listSelections();
          var emptyStrings = new Array(selections.length).join('1').split('1');
          // save the curEnd marker before it get cleared due to cm.replaceRange.
          if (vim.lastSelection) {
            lastSelectionCurEnd = vim.lastSelection.headMark.find();
          }
          // push the previously selected text to unnamed register
          vimGlobalState.registerController.unnamedRegister.setText(selectedText);
          if (blockwise) {
            // first delete the selected text
            cm.replaceSelections(emptyStrings);
            // Set new selections as per the block length of the yanked text
            selectionEnd = Pos(selectionStart.line + text.length-1, selectionStart.ch);
            cm.setCursor(selectionStart);
            selectBlock(cm, selectionEnd);
            cm.replaceSelections(text);
            curPosFinal = selectionStart;
          } else if (vim.visualBlock) {
            cm.replaceSelections(emptyStrings);
            cm.setCursor(selectionStart);
            cm.replaceRange(text, selectionStart, selectionStart);
            curPosFinal = selectionStart;
          } else {
            cm.replaceRange(text, selectionStart, selectionEnd);
            curPosFinal = cm.posFromIndex(cm.indexFromPos(selectionStart) + text.length - 1);
          }
          // restore the the curEnd marker
          if(lastSelectionCurEnd) {
            vim.lastSelection.headMark = cm.setBookmark(lastSelectionCurEnd);
          }
          if (linewise) {
            curPosFinal.ch=0;
          }
        } else {
          if (blockwise) {
            cm.setCursor(cur);
            for (var i = 0; i < text.length; i++) {
              var line = cur.line+i;
              if (line > cm.lastLine()) {
                cm.replaceRange('\n',  Pos(line, 0));
              }
              var lastCh = lineLength(cm, line);
              if (lastCh < cur.ch) {
                extendLineToColumn(cm, line, cur.ch);
              }
            }
            cm.setCursor(cur);
            selectBlock(cm, Pos(cur.line + text.length-1, cur.ch));
            cm.replaceSelections(text);
            curPosFinal = cur;
          } else {
            cm.replaceRange(text, cur);
            // Now fine tune the cursor to where we want it.
            if (linewise && actionArgs.after) {
              curPosFinal = Pos(
              cur.line + 1,
              findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line + 1)));
            } else if (linewise && !actionArgs.after) {
              curPosFinal = Pos(
                cur.line,
                findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line)));
            } else if (!linewise && actionArgs.after) {
              idx = cm.indexFromPos(cur);
              curPosFinal = cm.posFromIndex(idx + text.length - 1);
            } else {
              idx = cm.indexFromPos(cur);
              curPosFinal = cm.posFromIndex(idx + text.length);
            }
          }
        }
        if (vim.visualMode) {
          exitVisualMode(cm, false);
        }
        cm.setCursor(curPosFinal);
      },
      undo: function(cm, actionArgs) {
        cm.operation(function() {
          repeatFn(cm, CodeMirror.commands.undo, actionArgs.repeat)();
          cm.setCursor(cm.getCursor('anchor'));
        });
      },
      redo: function(cm, actionArgs) {
        repeatFn(cm, CodeMirror.commands.redo, actionArgs.repeat)();
      },
      setRegister: function(_cm, actionArgs, vim) {
        vim.inputState.registerName = actionArgs.selectedCharacter;
      },
      setMark: function(cm, actionArgs, vim) {
        var markName = actionArgs.selectedCharacter;
        updateMark(cm, vim, markName, cm.getCursor());
      },
      replace: function(cm, actionArgs, vim) {
        var replaceWith = actionArgs.selectedCharacter;
        var curStart = cm.getCursor();
        var replaceTo;
        var curEnd;
        var selections = cm.listSelections();
        if (vim.visualMode) {
          curStart = cm.getCursor('start');
          curEnd = cm.getCursor('end');
        } else {
          var line = cm.getLine(curStart.line);
          replaceTo = curStart.ch + actionArgs.repeat;
          if (replaceTo > line.length) {
            replaceTo=line.length;
          }
          curEnd = Pos(curStart.line, replaceTo);
        }
        if (replaceWith=='\n') {
          if (!vim.visualMode) cm.replaceRange('', curStart, curEnd);
          // special case, where vim help says to replace by just one line-break
          (CodeMirror.commands.newlineAndIndentContinueComment || CodeMirror.commands.newlineAndIndent)(cm);
        } else {
          var replaceWithStr = cm.getRange(curStart, curEnd);
          //replace all characters in range by selected, but keep linebreaks
          replaceWithStr = replaceWithStr.replace(/[^\n]/g, replaceWith);
          if (vim.visualBlock) {
            // Tabs are split in visua block before replacing
            var spaces = new Array(cm.getOption("tabSize")+1).join(' ');
            replaceWithStr = cm.getSelection();
            replaceWithStr = replaceWithStr.replace(/\t/g, spaces).replace(/[^\n]/g, replaceWith).split('\n');
            cm.replaceSelections(replaceWithStr);
          } else {
            cm.replaceRange(replaceWithStr, curStart, curEnd);
          }
          if (vim.visualMode) {
            curStart = cursorIsBefore(selections[0].anchor, selections[0].head) ?
                         selections[0].anchor : selections[0].head;
            cm.setCursor(curStart);
            exitVisualMode(cm, false);
          } else {
            cm.setCursor(offsetCursor(curEnd, 0, -1));
          }
        }
      },
      incrementNumberToken: function(cm, actionArgs) {
        var cur = cm.getCursor();
        var lineStr = cm.getLine(cur.line);
        var re = /(-?)(?:(0x)([\da-f]+)|(0b|0|)(\d+))/gi;
        var match;
        var start;
        var end;
        var numberStr;
        while ((match = re.exec(lineStr)) !== null) {
          start = match.index;
          end = start + match[0].length;
          if (cur.ch < end)break;
        }
        if (!actionArgs.backtrack && (end <= cur.ch))return;
        if (match) {
          var baseStr = match[2] || match[4]
          var digits = match[3] || match[5]
          var increment = actionArgs.increase ? 1 : -1;
          var base = {'0b': 2, '0': 8, '': 10, '0x': 16}[baseStr.toLowerCase()];
          var number = parseInt(match[1] + digits, base) + (increment * actionArgs.repeat);
          numberStr = number.toString(base);
          var zeroPadding = baseStr ? new Array(digits.length - numberStr.length + 1 + match[1].length).join('0') : ''
          if (numberStr.charAt(0) === '-') {
            numberStr = '-' + baseStr + zeroPadding + numberStr.substr(1);
          } else {
            numberStr = baseStr + zeroPadding + numberStr;
          }
          var from = Pos(cur.line, start);
          var to = Pos(cur.line, end);
          cm.replaceRange(numberStr, from, to);
        } else {
          return;
        }
        cm.setCursor(Pos(cur.line, start + numberStr.length - 1));
      },
      repeatLastEdit: function(cm, actionArgs, vim) {
        var lastEditInputState = vim.lastEditInputState;
        if (!lastEditInputState) { return; }
        var repeat = actionArgs.repeat;
        if (repeat && actionArgs.repeatIsExplicit) {
          vim.lastEditInputState.repeatOverride = repeat;
        } else {
          repeat = vim.lastEditInputState.repeatOverride || repeat;
        }
        repeatLastEdit(cm, vim, repeat, false /** repeatForInsert */);
      },
      indent: function(cm, actionArgs) {
        cm.indentLine(cm.getCursor().line, actionArgs.indentRight);
      },
      exitInsertMode: exitInsertMode
    };

    function defineAction(name, fn) {
      actions[name] = fn;
    }

    /*
     * Below are miscellaneous utility functions used by vim.js
     */

    /**
     * Clips cursor to ensure that line is within the buffer's range
     * If includeLineBreak is true, then allow cur.ch == lineLength.
     */
    function clipCursorToContent(cm, cur, includeLineBreak) {
      var line = Math.min(Math.max(cm.firstLine(), cur.line), cm.lastLine() );
      var maxCh = lineLength(cm, line) - 1;
      maxCh = (includeLineBreak) ? maxCh + 1 : maxCh;
      var ch = Math.min(Math.max(0, cur.ch), maxCh);
      return Pos(line, ch);
    }
    function copyArgs(args) {
      var ret = {};
      for (var prop in args) {
        if (args.hasOwnProperty(prop)) {
          ret[prop] = args[prop];
        }
      }
      return ret;
    }
    function offsetCursor(cur, offsetLine, offsetCh) {
      if (typeof offsetLine === 'object') {
        offsetCh = offsetLine.ch;
        offsetLine = offsetLine.line;
      }
      return Pos(cur.line + offsetLine, cur.ch + offsetCh);
    }
    function getOffset(anchor, head) {
      return {
        line: head.line - anchor.line,
        ch: head.line - anchor.line
      };
    }
    function commandMatches(keys, keyMap, context, inputState) {
      // Partial matches are not applied. They inform the key handler
      // that the current key sequence is a subsequence of a valid key
      // sequence, so that the key buffer is not cleared.
      var match, partial = [], full = [];
      for (var i = 0; i < keyMap.length; i++) {
        var command = keyMap[i];
        if (context == 'insert' && command.context != 'insert' ||
            command.context && command.context != context ||
            inputState.operator && command.type == 'action' ||
            !(match = commandMatch(keys, command.keys))) { continue; }
        if (match == 'partial') { partial.push(command); }
        if (match == 'full') { full.push(command); }
      }
      return {
        partial: partial.length && partial,
        full: full.length && full
      };
    }
    function commandMatch(pressed, mapped) {
      if (mapped.slice(-11) == '<character>') {
        // Last character matches anything.
        var prefixLen = mapped.length - 11;
        var pressedPrefix = pressed.slice(0, prefixLen);
        var mappedPrefix = mapped.slice(0, prefixLen);
        return pressedPrefix == mappedPrefix && pressed.length > prefixLen ? 'full' :
               mappedPrefix.indexOf(pressedPrefix) == 0 ? 'partial' : false;
      } else {
        return pressed == mapped ? 'full' :
               mapped.indexOf(pressed) == 0 ? 'partial' : false;
      }
    }
    function lastChar(keys) {
      var match = /^.*(<[^>]+>)$/.exec(keys);
      var selectedCharacter = match ? match[1] : keys.slice(-1);
      if (selectedCharacter.length > 1){
        switch(selectedCharacter){
          case '<CR>':
            selectedCharacter='\n';
            break;
          case '<Space>':
            selectedCharacter=' ';
            break;
          default:
            selectedCharacter='';
            break;
        }
      }
      return selectedCharacter;
    }
    function repeatFn(cm, fn, repeat) {
      return function() {
        for (var i = 0; i < repeat; i++) {
          fn(cm);
        }
      };
    }
    function copyCursor(cur) {
      return Pos(cur.line, cur.ch);
    }
    function cursorEqual(cur1, cur2) {
      return cur1.ch == cur2.ch && cur1.line == cur2.line;
    }
    function cursorIsBefore(cur1, cur2) {
      if (cur1.line < cur2.line) {
        return true;
      }
      if (cur1.line == cur2.line && cur1.ch < cur2.ch) {
        return true;
      }
      return false;
    }
    function cursorMin(cur1, cur2) {
      if (arguments.length > 2) {
        cur2 = cursorMin.apply(undefined, Array.prototype.slice.call(arguments, 1));
      }
      return cursorIsBefore(cur1, cur2) ? cur1 : cur2;
    }
    function cursorMax(cur1, cur2) {
      if (arguments.length > 2) {
        cur2 = cursorMax.apply(undefined, Array.prototype.slice.call(arguments, 1));
      }
      return cursorIsBefore(cur1, cur2) ? cur2 : cur1;
    }
    function cursorIsBetween(cur1, cur2, cur3) {
      // returns true if cur2 is between cur1 and cur3.
      var cur1before2 = cursorIsBefore(cur1, cur2);
      var cur2before3 = cursorIsBefore(cur2, cur3);
      return cur1before2 && cur2before3;
    }
    function lineLength(cm, lineNum) {
      return cm.getLine(lineNum).length;
    }
    function trim(s) {
      if (s.trim) {
        return s.trim();
      }
      return s.replace(/^\s+|\s+$/g, '');
    }
    function escapeRegex(s) {
      return s.replace(/([.?*+$\[\]\/\\(){}|\-])/g, '\\$1');
    }
    function extendLineToColumn(cm, lineNum, column) {
      var endCh = lineLength(cm, lineNum);
      var spaces = new Array(column-endCh+1).join(' ');
      cm.setCursor(Pos(lineNum, endCh));
      cm.replaceRange(spaces, cm.getCursor());
    }
    // This functions selects a rectangular block
    // of text with selectionEnd as any of its corner
    // Height of block:
    // Difference in selectionEnd.line and first/last selection.line
    // Width of the block:
    // Distance between selectionEnd.ch and any(first considered here) selection.ch
    function selectBlock(cm, selectionEnd) {
      var selections = [], ranges = cm.listSelections();
      var head = copyCursor(cm.clipPos(selectionEnd));
      var isClipped = !cursorEqual(selectionEnd, head);
      var curHead = cm.getCursor('head');
      var primIndex = getIndex(ranges, curHead);
      var wasClipped = cursorEqual(ranges[primIndex].head, ranges[primIndex].anchor);
      var max = ranges.length - 1;
      var index = max - primIndex > primIndex ? max : 0;
      var base = ranges[index].anchor;

      var firstLine = Math.min(base.line, head.line);
      var lastLine = Math.max(base.line, head.line);
      var baseCh = base.ch, headCh = head.ch;

      var dir = ranges[index].head.ch - baseCh;
      var newDir = headCh - baseCh;
      if (dir > 0 && newDir <= 0) {
        baseCh++;
        if (!isClipped) { headCh--; }
      } else if (dir < 0 && newDir >= 0) {
        baseCh--;
        if (!wasClipped) { headCh++; }
      } else if (dir < 0 && newDir == -1) {
        baseCh--;
        headCh++;
      }
      for (var line = firstLine; line <= lastLine; line++) {
        var range = {anchor: new Pos(line, baseCh), head: new Pos(line, headCh)};
        selections.push(range);
      }
      cm.setSelections(selections);
      selectionEnd.ch = headCh;
      base.ch = baseCh;
      return base;
    }
    function selectForInsert(cm, head, height) {
      var sel = [];
      for (var i = 0; i < height; i++) {
        var lineHead = offsetCursor(head, i, 0);
        sel.push({anchor: lineHead, head: lineHead});
      }
      cm.setSelections(sel, 0);
    }
    // getIndex returns the index of the cursor in the selections.
    function getIndex(ranges, cursor, end) {
      for (var i = 0; i < ranges.length; i++) {
        var atAnchor = end != 'head' && cursorEqual(ranges[i].anchor, cursor);
        var atHead = end != 'anchor' && cursorEqual(ranges[i].head, cursor);
        if (atAnchor || atHead) {
          return i;
        }
      }
      return -1;
    }
    function getSelectedAreaRange(cm, vim) {
      var lastSelection = vim.lastSelection;
      var getCurrentSelectedAreaRange = function() {
        var selections = cm.listSelections();
        var start =  selections[0];
        var end = selections[selections.length-1];
        var selectionStart = cursorIsBefore(start.anchor, start.head) ? start.anchor : start.head;
        var selectionEnd = cursorIsBefore(end.anchor, end.head) ? end.head : end.anchor;
        return [selectionStart, selectionEnd];
      };
      var getLastSelectedAreaRange = function() {
        var selectionStart = cm.getCursor();
        var selectionEnd = cm.getCursor();
        var block = lastSelection.visualBlock;
        if (block) {
          var width = block.width;
          var height = block.height;
          selectionEnd = Pos(selectionStart.line + height, selectionStart.ch + width);
          var selections = [];
          // selectBlock creates a 'proper' rectangular block.
          // We do not want that in all cases, so we manually set selections.
          for (var i = selectionStart.line; i < selectionEnd.line; i++) {
            var anchor = Pos(i, selectionStart.ch);
            var head = Pos(i, selectionEnd.ch);
            var range = {anchor: anchor, head: head};
            selections.push(range);
          }
          cm.setSelections(selections);
        } else {
          var start = lastSelection.anchorMark.find();
          var end = lastSelection.headMark.find();
          var line = end.line - start.line;
          var ch = end.ch - start.ch;
          selectionEnd = {line: selectionEnd.line + line, ch: line ? selectionEnd.ch : ch + selectionEnd.ch};
          if (lastSelection.visualLine) {
            selectionStart = Pos(selectionStart.line, 0);
            selectionEnd = Pos(selectionEnd.line, lineLength(cm, selectionEnd.line));
          }
          cm.setSelection(selectionStart, selectionEnd);
        }
        return [selectionStart, selectionEnd];
      };
      if (!vim.visualMode) {
      // In case of replaying the action.
        return getLastSelectedAreaRange();
      } else {
        return getCurrentSelectedAreaRange();
      }
    }
    // Updates the previous selection with the current selection's values. This
    // should only be called in visual mode.
    function updateLastSelection(cm, vim) {
      var anchor = vim.sel.anchor;
      var head = vim.sel.head;
      // To accommodate the effect of lastPastedText in the last selection
      if (vim.lastPastedText) {
        head = cm.posFromIndex(cm.indexFromPos(anchor) + vim.lastPastedText.length);
        vim.lastPastedText = null;
      }
      vim.lastSelection = {'anchorMark': cm.setBookmark(anchor),
                           'headMark': cm.setBookmark(head),
                           'anchor': copyCursor(anchor),
                           'head': copyCursor(head),
                           'visualMode': vim.visualMode,
                           'visualLine': vim.visualLine,
                           'visualBlock': vim.visualBlock};
    }
    function expandSelection(cm, start, end) {
      var sel = cm.state.vim.sel;
      var head = sel.head;
      var anchor = sel.anchor;
      var tmp;
      if (cursorIsBefore(end, start)) {
        tmp = end;
        end = start;
        start = tmp;
      }
      if (cursorIsBefore(head, anchor)) {
        head = cursorMin(start, head);
        anchor = cursorMax(anchor, end);
      } else {
        anchor = cursorMin(start, anchor);
        head = cursorMax(head, end);
        head = offsetCursor(head, 0, -1);
        if (head.ch == -1 && head.line != cm.firstLine()) {
          head = Pos(head.line - 1, lineLength(cm, head.line - 1));
        }
      }
      return [anchor, head];
    }
    /**
     * Updates the CodeMirror selection to match the provided vim selection.
     * If no arguments are given, it uses the current vim selection state.
     */
    function updateCmSelection(cm, sel, mode) {
      var vim = cm.state.vim;
      sel = sel || vim.sel;
      var mode = mode ||
        vim.visualLine ? 'line' : vim.visualBlock ? 'block' : 'char';
      var cmSel = makeCmSelection(cm, sel, mode);
      cm.setSelections(cmSel.ranges, cmSel.primary);
      updateFakeCursor(cm);
    }
    function makeCmSelection(cm, sel, mode, exclusive) {
      var head = copyCursor(sel.head);
      var anchor = copyCursor(sel.anchor);
      if (mode == 'char') {
        var headOffset = !exclusive && !cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
        var anchorOffset = cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
        head = offsetCursor(sel.head, 0, headOffset);
        anchor = offsetCursor(sel.anchor, 0, anchorOffset);
        return {
          ranges: [{anchor: anchor, head: head}],
          primary: 0
        };
      } else if (mode == 'line') {
        if (!cursorIsBefore(sel.head, sel.anchor)) {
          anchor.ch = 0;

          var lastLine = cm.lastLine();
          if (head.line > lastLine) {
            head.line = lastLine;
          }
          head.ch = lineLength(cm, head.line);
        } else {
          head.ch = 0;
          anchor.ch = lineLength(cm, anchor.line);
        }
        return {
          ranges: [{anchor: anchor, head: head}],
          primary: 0
        };
      } else if (mode == 'block') {
        var top = Math.min(anchor.line, head.line),
            left = Math.min(anchor.ch, head.ch),
            bottom = Math.max(anchor.line, head.line),
            right = Math.max(anchor.ch, head.ch) + 1;
        var height = bottom - top + 1;
        var primary = head.line == top ? 0 : height - 1;
        var ranges = [];
        for (var i = 0; i < height; i++) {
          ranges.push({
            anchor: Pos(top + i, left),
            head: Pos(top + i, right)
          });
        }
        return {
          ranges: ranges,
          primary: primary
        };
      }
    }
    function getHead(cm) {
      var cur = cm.getCursor('head');
      if (cm.getSelection().length == 1) {
        // Small corner case when only 1 character is selected. The "real"
        // head is the left of head and anchor.
        cur = cursorMin(cur, cm.getCursor('anchor'));
      }
      return cur;
    }

    /**
     * If moveHead is set to false, the CodeMirror selection will not be
     * touched. The caller assumes the responsibility of putting the cursor
    * in the right place.
     */
    function exitVisualMode(cm, moveHead) {
      var vim = cm.state.vim;
      if (moveHead !== false) {
        cm.setCursor(clipCursorToContent(cm, vim.sel.head));
      }
      updateLastSelection(cm, vim);
      vim.visualMode = false;
      vim.visualLine = false;
      vim.visualBlock = false;
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      if (vim.fakeCursor) {
        vim.fakeCursor.clear();
      }
    }

    // Remove any trailing newlines from the selection. For
    // example, with the caret at the start of the last word on the line,
    // 'dw' should word, but not the newline, while 'w' should advance the
    // caret to the first character of the next line.
    function clipToLine(cm, curStart, curEnd) {
      var selection = cm.getRange(curStart, curEnd);
      // Only clip if the selection ends with trailing newline + whitespace
      if (/\n\s*$/.test(selection)) {
        var lines = selection.split('\n');
        // We know this is all whitespace.
        lines.pop();

        // Cases:
        // 1. Last word is an empty line - do not clip the trailing '\n'
        // 2. Last word is not an empty line - clip the trailing '\n'
        var line;
        // Find the line containing the last word, and clip all whitespace up
        // to it.
        for (var line = lines.pop(); lines.length > 0 && line && isWhiteSpaceString(line); line = lines.pop()) {
          curEnd.line--;
          curEnd.ch = 0;
        }
        // If the last word is not an empty line, clip an additional newline
        if (line) {
          curEnd.line--;
          curEnd.ch = lineLength(cm, curEnd.line);
        } else {
          curEnd.ch = 0;
        }
      }
    }

    // Expand the selection to line ends.
    function expandSelectionToLine(_cm, curStart, curEnd) {
      curStart.ch = 0;
      curEnd.ch = 0;
      curEnd.line++;
    }

    function findFirstNonWhiteSpaceCharacter(text) {
      if (!text) {
        return 0;
      }
      var firstNonWS = text.search(/\S/);
      return firstNonWS == -1 ? text.length : firstNonWS;
    }

    function expandWordUnderCursor(cm, inclusive, _forward, bigWord, noSymbol) {
      var cur = getHead(cm);
      var line = cm.getLine(cur.line);
      var idx = cur.ch;

      // Seek to first word or non-whitespace character, depending on if
      // noSymbol is true.
      var test = noSymbol ? wordCharTest[0] : bigWordCharTest [0];
      while (!test(line.charAt(idx))) {
        idx++;
        if (idx >= line.length) { return null; }
      }

      if (bigWord) {
        test = bigWordCharTest[0];
      } else {
        test = wordCharTest[0];
        if (!test(line.charAt(idx))) {
          test = wordCharTest[1];
        }
      }

      var end = idx, start = idx;
      while (test(line.charAt(end)) && end < line.length) { end++; }
      while (test(line.charAt(start)) && start >= 0) { start--; }
      start++;

      if (inclusive) {
        // If present, include all whitespace after word.
        // Otherwise, include all whitespace before word, except indentation.
        var wordEnd = end;
        while (/\s/.test(line.charAt(end)) && end < line.length) { end++; }
        if (wordEnd == end) {
          var wordStart = start;
          while (/\s/.test(line.charAt(start - 1)) && start > 0) { start--; }
          if (!start) { start = wordStart; }
        }
      }
      return { start: Pos(cur.line, start), end: Pos(cur.line, end) };
    }

    function recordJumpPosition(cm, oldCur, newCur) {
      if (!cursorEqual(oldCur, newCur)) {
        vimGlobalState.jumpList.add(cm, oldCur, newCur);
      }
    }

    function recordLastCharacterSearch(increment, args) {
        vimGlobalState.lastCharacterSearch.increment = increment;
        vimGlobalState.lastCharacterSearch.forward = args.forward;
        vimGlobalState.lastCharacterSearch.selectedCharacter = args.selectedCharacter;
    }

    var symbolToMode = {
        '(': 'bracket', ')': 'bracket', '{': 'bracket', '}': 'bracket',
        '[': 'section', ']': 'section',
        '*': 'comment', '/': 'comment',
        'm': 'method', 'M': 'method',
        '#': 'preprocess'
    };
    var findSymbolModes = {
      bracket: {
        isComplete: function(state) {
          if (state.nextCh === state.symb) {
            state.depth++;
            if (state.depth >= 1)return true;
          } else if (state.nextCh === state.reverseSymb) {
            state.depth--;
          }
          return false;
        }
      },
      section: {
        init: function(state) {
          state.curMoveThrough = true;
          state.symb = (state.forward ? ']' : '[') === state.symb ? '{' : '}';
        },
        isComplete: function(state) {
          return state.index === 0 && state.nextCh === state.symb;
        }
      },
      comment: {
        isComplete: function(state) {
          var found = state.lastCh === '*' && state.nextCh === '/';
          state.lastCh = state.nextCh;
          return found;
        }
      },
      // TODO: The original Vim implementation only operates on level 1 and 2.
      // The current implementation doesn't check for code block level and
      // therefore it operates on any levels.
      method: {
        init: function(state) {
          state.symb = (state.symb === 'm' ? '{' : '}');
          state.reverseSymb = state.symb === '{' ? '}' : '{';
        },
        isComplete: function(state) {
          if (state.nextCh === state.symb)return true;
          return false;
        }
      },
      preprocess: {
        init: function(state) {
          state.index = 0;
        },
        isComplete: function(state) {
          if (state.nextCh === '#') {
            var token = state.lineText.match(/#(\w+)/)[1];
            if (token === 'endif') {
              if (state.forward && state.depth === 0) {
                return true;
              }
              state.depth++;
            } else if (token === 'if') {
              if (!state.forward && state.depth === 0) {
                return true;
              }
              state.depth--;
            }
            if (token === 'else' && state.depth === 0)return true;
          }
          return false;
        }
      }
    };
    function findSymbol(cm, repeat, forward, symb) {
      var cur = copyCursor(cm.getCursor());
      var increment = forward ? 1 : -1;
      var endLine = forward ? cm.lineCount() : -1;
      var curCh = cur.ch;
      var line = cur.line;
      var lineText = cm.getLine(line);
      var state = {
        lineText: lineText,
        nextCh: lineText.charAt(curCh),
        lastCh: null,
        index: curCh,
        symb: symb,
        reverseSymb: (forward ?  { ')': '(', '}': '{' } : { '(': ')', '{': '}' })[symb],
        forward: forward,
        depth: 0,
        curMoveThrough: false
      };
      var mode = symbolToMode[symb];
      if (!mode)return cur;
      var init = findSymbolModes[mode].init;
      var isComplete = findSymbolModes[mode].isComplete;
      if (init) { init(state); }
      while (line !== endLine && repeat) {
        state.index += increment;
        state.nextCh = state.lineText.charAt(state.index);
        if (!state.nextCh) {
          line += increment;
          state.lineText = cm.getLine(line) || '';
          if (increment > 0) {
            state.index = 0;
          } else {
            var lineLen = state.lineText.length;
            state.index = (lineLen > 0) ? (lineLen-1) : 0;
          }
          state.nextCh = state.lineText.charAt(state.index);
        }
        if (isComplete(state)) {
          cur.line = line;
          cur.ch = state.index;
          repeat--;
        }
      }
      if (state.nextCh || state.curMoveThrough) {
        return Pos(line, state.index);
      }
      return cur;
    }

    /*
     * Returns the boundaries of the next word. If the cursor in the middle of
     * the word, then returns the boundaries of the current word, starting at
     * the cursor. If the cursor is at the start/end of a word, and we are going
     * forward/backward, respectively, find the boundaries of the next word.
     *
     * @param {CodeMirror} cm CodeMirror object.
     * @param {Cursor} cur The cursor position.
     * @param {boolean} forward True to search forward. False to search
     *     backward.
     * @param {boolean} bigWord True if punctuation count as part of the word.
     *     False if only [a-zA-Z0-9] characters count as part of the word.
     * @param {boolean} emptyLineIsWord True if empty lines should be treated
     *     as words.
     * @return {Object{from:number, to:number, line: number}} The boundaries of
     *     the word, or null if there are no more words.
     */
    function findWord(cm, cur, forward, bigWord, emptyLineIsWord) {
      var lineNum = cur.line;
      var pos = cur.ch;
      var line = cm.getLine(lineNum);
      var dir = forward ? 1 : -1;
      var charTests = bigWord ? bigWordCharTest: wordCharTest;

      if (emptyLineIsWord && line == '') {
        lineNum += dir;
        line = cm.getLine(lineNum);
        if (!isLine(cm, lineNum)) {
          return null;
        }
        pos = (forward) ? 0 : line.length;
      }

      while (true) {
        if (emptyLineIsWord && line == '') {
          return { from: 0, to: 0, line: lineNum };
        }
        var stop = (dir > 0) ? line.length : -1;
        var wordStart = stop, wordEnd = stop;
        // Find bounds of next word.
        while (pos != stop) {
          var foundWord = false;
          for (var i = 0; i < charTests.length && !foundWord; ++i) {
            if (charTests[i](line.charAt(pos))) {
              wordStart = pos;
              // Advance to end of word.
              while (pos != stop && charTests[i](line.charAt(pos))) {
                pos += dir;
              }
              wordEnd = pos;
              foundWord = wordStart != wordEnd;
              if (wordStart == cur.ch && lineNum == cur.line &&
                  wordEnd == wordStart + dir) {
                // We started at the end of a word. Find the next one.
                continue;
              } else {
                return {
                  from: Math.min(wordStart, wordEnd + 1),
                  to: Math.max(wordStart, wordEnd),
                  line: lineNum };
              }
            }
          }
          if (!foundWord) {
            pos += dir;
          }
        }
        // Advance to next/prev line.
        lineNum += dir;
        if (!isLine(cm, lineNum)) {
          return null;
        }
        line = cm.getLine(lineNum);
        pos = (dir > 0) ? 0 : line.length;
      }
    }

    /**
     * @param {CodeMirror} cm CodeMirror object.
     * @param {Pos} cur The position to start from.
     * @param {int} repeat Number of words to move past.
     * @param {boolean} forward True to search forward. False to search
     *     backward.
     * @param {boolean} wordEnd True to move to end of word. False to move to
     *     beginning of word.
     * @param {boolean} bigWord True if punctuation count as part of the word.
     *     False if only alphabet characters count as part of the word.
     * @return {Cursor} The position the cursor should move to.
     */
    function moveToWord(cm, cur, repeat, forward, wordEnd, bigWord) {
      var curStart = copyCursor(cur);
      var words = [];
      if (forward && !wordEnd || !forward && wordEnd) {
        repeat++;
      }
      // For 'e', empty lines are not considered words, go figure.
      var emptyLineIsWord = !(forward && wordEnd);
      for (var i = 0; i < repeat; i++) {
        var word = findWord(cm, cur, forward, bigWord, emptyLineIsWord);
        if (!word) {
          var eodCh = lineLength(cm, cm.lastLine());
          words.push(forward
              ? {line: cm.lastLine(), from: eodCh, to: eodCh}
              : {line: 0, from: 0, to: 0});
          break;
        }
        words.push(word);
        cur = Pos(word.line, forward ? (word.to - 1) : word.from);
      }
      var shortCircuit = words.length != repeat;
      var firstWord = words[0];
      var lastWord = words.pop();
      if (forward && !wordEnd) {
        // w
        if (!shortCircuit && (firstWord.from != curStart.ch || firstWord.line != curStart.line)) {
          // We did not start in the middle of a word. Discard the extra word at the end.
          lastWord = words.pop();
        }
        return Pos(lastWord.line, lastWord.from);
      } else if (forward && wordEnd) {
        return Pos(lastWord.line, lastWord.to - 1);
      } else if (!forward && wordEnd) {
        // ge
        if (!shortCircuit && (firstWord.to != curStart.ch || firstWord.line != curStart.line)) {
          // We did not start in the middle of a word. Discard the extra word at the end.
          lastWord = words.pop();
        }
        return Pos(lastWord.line, lastWord.to);
      } else {
        // b
        return Pos(lastWord.line, lastWord.from);
      }
    }

    function moveToCharacter(cm, repeat, forward, character) {
      var cur = cm.getCursor();
      var start = cur.ch;
      var idx;
      for (var i = 0; i < repeat; i ++) {
        var line = cm.getLine(cur.line);
        idx = charIdxInLine(start, line, character, forward, true);
        if (idx == -1) {
          return null;
        }
        start = idx;
      }
      return Pos(cm.getCursor().line, idx);
    }

    function moveToColumn(cm, repeat) {
      // repeat is always >= 1, so repeat - 1 always corresponds
      // to the column we want to go to.
      var line = cm.getCursor().line;
      return clipCursorToContent(cm, Pos(line, repeat - 1));
    }

    function updateMark(cm, vim, markName, pos) {
      if (!inArray(markName, validMarks)) {
        return;
      }
      if (vim.marks[markName]) {
        vim.marks[markName].clear();
      }
      vim.marks[markName] = cm.setBookmark(pos);
    }

    function charIdxInLine(start, line, character, forward, includeChar) {
      // Search for char in line.
      // motion_options: {forward, includeChar}
      // If includeChar = true, include it too.
      // If forward = true, search forward, else search backwards.
      // If char is not found on this line, do nothing
      var idx;
      if (forward) {
        idx = line.indexOf(character, start + 1);
        if (idx != -1 && !includeChar) {
          idx -= 1;
        }
      } else {
        idx = line.lastIndexOf(character, start - 1);
        if (idx != -1 && !includeChar) {
          idx += 1;
        }
      }
      return idx;
    }

    function findParagraph(cm, head, repeat, dir, inclusive) {
      var line = head.line;
      var min = cm.firstLine();
      var max = cm.lastLine();
      var start, end, i = line;
      function isEmpty(i) { return !cm.getLine(i); }
      function isBoundary(i, dir, any) {
        if (any) { return isEmpty(i) != isEmpty(i + dir); }
        return !isEmpty(i) && isEmpty(i + dir);
      }
      if (dir) {
        while (min <= i && i <= max && repeat > 0) {
          if (isBoundary(i, dir)) { repeat--; }
          i += dir;
        }
        return new Pos(i, 0);
      }

      var vim = cm.state.vim;
      if (vim.visualLine && isBoundary(line, 1, true)) {
        var anchor = vim.sel.anchor;
        if (isBoundary(anchor.line, -1, true)) {
          if (!inclusive || anchor.line != line) {
            line += 1;
          }
        }
      }
      var startState = isEmpty(line);
      for (i = line; i <= max && repeat; i++) {
        if (isBoundary(i, 1, true)) {
          if (!inclusive || isEmpty(i) != startState) {
            repeat--;
          }
        }
      }
      end = new Pos(i, 0);
      // select boundary before paragraph for the last one
      if (i > max && !startState) { startState = true; }
      else { inclusive = false; }
      for (i = line; i > min; i--) {
        if (!inclusive || isEmpty(i) == startState || i == line) {
          if (isBoundary(i, -1, true)) { break; }
        }
      }
      start = new Pos(i, 0);
      return { start: start, end: end };
    }

    function findSentence(cm, cur, repeat, dir) {

      /*
        Takes an index object
        {
          line: the line string,
          ln: line number,
          pos: index in line,
          dir: direction of traversal (-1 or 1)
        }
        and modifies the line, ln, and pos members to represent the
        next valid position or sets them to null if there are
        no more valid positions.
       */
      function nextChar(cm, idx) {
        if (idx.pos + idx.dir < 0 || idx.pos + idx.dir >= idx.line.length) {
          idx.ln += idx.dir;
          if (!isLine(cm, idx.ln)) {
            idx.line = null;
            idx.ln = null;
            idx.pos = null;
            return;
          }
          idx.line = cm.getLine(idx.ln);
          idx.pos = (idx.dir > 0) ? 0 : idx.line.length - 1;
        }
        else {
          idx.pos += idx.dir;
        }
      }

      /*
        Performs one iteration of traversal in forward direction
        Returns an index object of the new location
       */
      function forward(cm, ln, pos, dir) {
        var line = cm.getLine(ln);
        var stop = (line === "");

        var curr = {
          line: line,
          ln: ln,
          pos: pos,
          dir: dir,
        }

        var last_valid = {
          ln: curr.ln,
          pos: curr.pos,
        }

        var skip_empty_lines = (curr.line === "");

        // Move one step to skip character we start on
        nextChar(cm, curr);

        while (curr.line !== null) {
          last_valid.ln = curr.ln;
          last_valid.pos = curr.pos;

          if (curr.line === "" && !skip_empty_lines) {
            return { ln: curr.ln, pos: curr.pos, };
          }
          else if (stop && curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
            return { ln: curr.ln, pos: curr.pos, };
          }
          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
            && !stop
            && (curr.pos === curr.line.length - 1
              || isWhiteSpaceString(curr.line[curr.pos + 1]))) {
            stop = true;
          }

          nextChar(cm, curr);
        }

        /*
          Set the position to the last non whitespace character on the last
          valid line in the case that we reach the end of the document.
        */
        var line = cm.getLine(last_valid.ln);
        last_valid.pos = 0;
        for(var i = line.length - 1; i >= 0; --i) {
          if (!isWhiteSpaceString(line[i])) {
            last_valid.pos = i;
            break;
          }
        }

        return last_valid;

      }

      /*
        Performs one iteration of traversal in reverse direction
        Returns an index object of the new location
       */
      function reverse(cm, ln, pos, dir) {
        var line = cm.getLine(ln);

        var curr = {
          line: line,
          ln: ln,
          pos: pos,
          dir: dir,
        }

        var last_valid = {
          ln: curr.ln,
          pos: null,
        };

        var skip_empty_lines = (curr.line === "");

        // Move one step to skip character we start on
        nextChar(cm, curr);

        while (curr.line !== null) {

          if (curr.line === "" && !skip_empty_lines) {
            if (last_valid.pos !== null) {
              return last_valid;
            }
            else {
              return { ln: curr.ln, pos: curr.pos };
            }
          }
          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
              && last_valid.pos !== null
              && !(curr.ln === last_valid.ln && curr.pos + 1 === last_valid.pos)) {
            return last_valid;
          }
          else if (curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
            skip_empty_lines = false;
            last_valid = { ln: curr.ln, pos: curr.pos }
          }

          nextChar(cm, curr);
        }

        /*
          Set the position to the first non whitespace character on the last
          valid line in the case that we reach the beginning of the document.
        */
        var line = cm.getLine(last_valid.ln);
        last_valid.pos = 0;
        for(var i = 0; i < line.length; ++i) {
          if (!isWhiteSpaceString(line[i])) {
            last_valid.pos = i;
            break;
          }
        }
        return last_valid;
      }

      var curr_index = {
        ln: cur.line,
        pos: cur.ch,
      };

      while (repeat > 0) {
        if (dir < 0) {
          curr_index = reverse(cm, curr_index.ln, curr_index.pos, dir);
        }
        else {
          curr_index = forward(cm, curr_index.ln, curr_index.pos, dir);
        }
        repeat--;
      }

      return Pos(curr_index.ln, curr_index.pos);
    }

    // TODO: perhaps this finagling of start and end positions belonds
    // in codemirror/replaceRange?
    function selectCompanionObject(cm, head, symb, inclusive) {
      var cur = head, start, end;

      var bracketRegexp = ({
        '(': /[()]/, ')': /[()]/,
        '[': /[[\]]/, ']': /[[\]]/,
        '{': /[{}]/, '}': /[{}]/,
        '<': /[<>]/, '>': /[<>]/})[symb];
      var openSym = ({
        '(': '(', ')': '(',
        '[': '[', ']': '[',
        '{': '{', '}': '{',
        '<': '<', '>': '<'})[symb];
      var curChar = cm.getLine(cur.line).charAt(cur.ch);
      // Due to the behavior of scanForBracket, we need to add an offset if the
      // cursor is on a matching open bracket.
      var offset = curChar === openSym ? 1 : 0;

      start = cm.scanForBracket(Pos(cur.line, cur.ch + offset), -1, undefined, {'bracketRegex': bracketRegexp});
      end = cm.scanForBracket(Pos(cur.line, cur.ch + offset), 1, undefined, {'bracketRegex': bracketRegexp});

      if (!start || !end) {
        return { start: cur, end: cur };
      }

      start = start.pos;
      end = end.pos;

      if ((start.line == end.line && start.ch > end.ch)
          || (start.line > end.line)) {
        var tmp = start;
        start = end;
        end = tmp;
      }

      if (inclusive) {
        end.ch += 1;
      } else {
        start.ch += 1;
      }

      return { start: start, end: end };
    }

    // Takes in a symbol and a cursor and tries to simulate text objects that
    // have identical opening and closing symbols
    // TODO support across multiple lines
    function findBeginningAndEnd(cm, head, symb, inclusive) {
      var cur = copyCursor(head);
      var line = cm.getLine(cur.line);
      var chars = line.split('');
      var start, end, i, len;
      var firstIndex = chars.indexOf(symb);

      // the decision tree is to always look backwards for the beginning first,
      // but if the cursor is in front of the first instance of the symb,
      // then move the cursor forward
      if (cur.ch < firstIndex) {
        cur.ch = firstIndex;
        // Why is this line even here???
        // cm.setCursor(cur.line, firstIndex+1);
      }
      // otherwise if the cursor is currently on the closing symbol
      else if (firstIndex < cur.ch && chars[cur.ch] == symb) {
        end = cur.ch; // assign end to the current cursor
        --cur.ch; // make sure to look backwards
      }

      // if we're currently on the symbol, we've got a start
      if (chars[cur.ch] == symb && !end) {
        start = cur.ch + 1; // assign start to ahead of the cursor
      } else {
        // go backwards to find the start
        for (i = cur.ch; i > -1 && !start; i--) {
          if (chars[i] == symb) {
            start = i + 1;
          }
        }
      }

      // look forwards for the end symbol
      if (start && !end) {
        for (i = start, len = chars.length; i < len && !end; i++) {
          if (chars[i] == symb) {
            end = i;
          }
        }
      }

      // nothing found
      if (!start || !end) {
        return { start: cur, end: cur };
      }

      // include the symbols
      if (inclusive) {
        --start; ++end;
      }

      return {
        start: Pos(cur.line, start),
        end: Pos(cur.line, end)
      };
    }

    // Search functions
    defineOption('pcre', true, 'boolean');
    function SearchState() {}
    SearchState.prototype = {
      getQuery: function() {
        return vimGlobalState.query;
      },
      setQuery: function(query) {
        vimGlobalState.query = query;
      },
      getOverlay: function() {
        return this.searchOverlay;
      },
      setOverlay: function(overlay) {
        this.searchOverlay = overlay;
      },
      isReversed: function() {
        return vimGlobalState.isReversed;
      },
      setReversed: function(reversed) {
        vimGlobalState.isReversed = reversed;
      },
      getScrollbarAnnotate: function() {
        return this.annotate;
      },
      setScrollbarAnnotate: function(annotate) {
        this.annotate = annotate;
      }
    };
    function getSearchState(cm) {
      var vim = cm.state.vim;
      return vim.searchState_ || (vim.searchState_ = new SearchState());
    }
    function dialog(cm, template, shortText, onClose, options) {
      if (cm.openDialog) {
        cm.openDialog(template, onClose, { bottom: true, value: options.value,
            onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp,
            selectValueOnOpen: false});
      }
      else {
        onClose(prompt(shortText, ''));
      }
    }
    function splitBySlash(argString) {
      return splitBySeparator(argString, '/');
    }

    function findUnescapedSlashes(argString) {
      return findUnescapedSeparators(argString, '/');
    }

    function splitBySeparator(argString, separator) {
      var slashes = findUnescapedSeparators(argString, separator) || [];
      if (!slashes.length) return [];
      var tokens = [];
      // in case of strings like foo/bar
      if (slashes[0] !== 0) return;
      for (var i = 0; i < slashes.length; i++) {
        if (typeof slashes[i] == 'number')
          tokens.push(argString.substring(slashes[i] + 1, slashes[i+1]));
      }
      return tokens;
    }

    function findUnescapedSeparators(str, separator) {
      if (!separator)
        separator = '/';

      var escapeNextChar = false;
      var slashes = [];
      for (var i = 0; i < str.length; i++) {
        var c = str.charAt(i);
        if (!escapeNextChar && c == separator) {
          slashes.push(i);
        }
        escapeNextChar = !escapeNextChar && (c == '\\');
      }
      return slashes;
    }

    // Translates a search string from ex (vim) syntax into javascript form.
    function translateRegex(str) {
      // When these match, add a '\' if unescaped or remove one if escaped.
      var specials = '|(){';
      // Remove, but never add, a '\' for these.
      var unescape = '}';
      var escapeNextChar = false;
      var out = [];
      for (var i = -1; i < str.length; i++) {
        var c = str.charAt(i) || '';
        var n = str.charAt(i+1) || '';
        var specialComesNext = (n && specials.indexOf(n) != -1);
        if (escapeNextChar) {
          if (c !== '\\' || !specialComesNext) {
            out.push(c);
          }
          escapeNextChar = false;
        } else {
          if (c === '\\') {
            escapeNextChar = true;
            // Treat the unescape list as special for removing, but not adding '\'.
            if (n && unescape.indexOf(n) != -1) {
              specialComesNext = true;
            }
            // Not passing this test means removing a '\'.
            if (!specialComesNext || n === '\\') {
              out.push(c);
            }
          } else {
            out.push(c);
            if (specialComesNext && n !== '\\') {
              out.push('\\');
            }
          }
        }
      }
      return out.join('');
    }

    // Translates the replace part of a search and replace from ex (vim) syntax into
    // javascript form.  Similar to translateRegex, but additionally fixes back references
    // (translates '\[0..9]' to '$[0..9]') and follows different rules for escaping '$'.
    var charUnescapes = {'\\n': '\n', '\\r': '\r', '\\t': '\t'};
    function translateRegexReplace(str) {
      var escapeNextChar = false;
      var out = [];
      for (var i = -1; i < str.length; i++) {
        var c = str.charAt(i) || '';
        var n = str.charAt(i+1) || '';
        if (charUnescapes[c + n]) {
          out.push(charUnescapes[c+n]);
          i++;
        } else if (escapeNextChar) {
          // At any point in the loop, escapeNextChar is true if the previous
          // character was a '\' and was not escaped.
          out.push(c);
          escapeNextChar = false;
        } else {
          if (c === '\\') {
            escapeNextChar = true;
            if ((isNumber(n) || n === '$')) {
              out.push('$');
            } else if (n !== '/' && n !== '\\') {
              out.push('\\');
            }
          } else {
            if (c === '$') {
              out.push('$');
            }
            out.push(c);
            if (n === '/') {
              out.push('\\');
            }
          }
        }
      }
      return out.join('');
    }

    // Unescape \ and / in the replace part, for PCRE mode.
    var unescapes = {'\\/': '/', '\\\\': '\\', '\\n': '\n', '\\r': '\r', '\\t': '\t'};
    function unescapeRegexReplace(str) {
      var stream = new CodeMirror.StringStream(str);
      var output = [];
      while (!stream.eol()) {
        // Search for \.
        while (stream.peek() && stream.peek() != '\\') {
          output.push(stream.next());
        }
        var matched = false;
        for (var matcher in unescapes) {
          if (stream.match(matcher, true)) {
            matched = true;
            output.push(unescapes[matcher]);
            break;
          }
        }
        if (!matched) {
          // Don't change anything
          output.push(stream.next());
        }
      }
      return output.join('');
    }

    /**
     * Extract the regular expression from the query and return a Regexp object.
     * Returns null if the query is blank.
     * If ignoreCase is passed in, the Regexp object will have the 'i' flag set.
     * If smartCase is passed in, and the query contains upper case letters,
     *   then ignoreCase is overridden, and the 'i' flag will not be set.
     * If the query contains the /i in the flag part of the regular expression,
     *   then both ignoreCase and smartCase are ignored, and 'i' will be passed
     *   through to the Regex object.
     */
    function parseQuery(query, ignoreCase, smartCase) {
      // First update the last search register
      var lastSearchRegister = vimGlobalState.registerController.getRegister('/');
      lastSearchRegister.setText(query);
      // Check if the query is already a regex.
      if (query instanceof RegExp) { return query; }
      // First try to extract regex + flags from the input. If no flags found,
      // extract just the regex. IE does not accept flags directly defined in
      // the regex string in the form /regex/flags
      var slashes = findUnescapedSlashes(query);
      var regexPart;
      var forceIgnoreCase;
      if (!slashes.length) {
        // Query looks like 'regexp'
        regexPart = query;
      } else {
        // Query looks like 'regexp/...'
        regexPart = query.substring(0, slashes[0]);
        var flagsPart = query.substring(slashes[0]);
        forceIgnoreCase = (flagsPart.indexOf('i') != -1);
      }
      if (!regexPart) {
        return null;
      }
      if (!getOption('pcre')) {
        regexPart = translateRegex(regexPart);
      }
      if (smartCase) {
        ignoreCase = (/^[^A-Z]*$/).test(regexPart);
      }
      var regexp = new RegExp(regexPart,
          (ignoreCase || forceIgnoreCase) ? 'i' : undefined);
      return regexp;
    }
    function showConfirm(cm, text) {
      if (cm.openNotification) {
        cm.openNotification('<span style="color: red">' + text + '</span>',
                            {bottom: true, duration: 5000});
      } else {
        alert(text);
      }
    }
    function makePrompt(prefix, desc) {
      var raw = '<span style="font-family: monospace; white-space: pre">' +
          (prefix || "") + '<input type="text"></span>';
      if (desc)
        raw += ' <span style="color: #888">' + desc + '</span>';
      return raw;
    }
    var searchPromptDesc = '(Javascript regexp)';
    function showPrompt(cm, options) {
      var shortText = (options.prefix || '') + ' ' + (options.desc || '');
      var prompt = makePrompt(options.prefix, options.desc);
      dialog(cm, prompt, shortText, options.onClose, options);
    }
    function regexEqual(r1, r2) {
      if (r1 instanceof RegExp && r2 instanceof RegExp) {
          var props = ['global', 'multiline', 'ignoreCase', 'source'];
          for (var i = 0; i < props.length; i++) {
              var prop = props[i];
              if (r1[prop] !== r2[prop]) {
                  return false;
              }
          }
          return true;
      }
      return false;
    }
    // Returns true if the query is valid.
    function updateSearchQuery(cm, rawQuery, ignoreCase, smartCase) {
      if (!rawQuery) {
        return;
      }
      var state = getSearchState(cm);
      var query = parseQuery(rawQuery, !!ignoreCase, !!smartCase);
      if (!query) {
        return;
      }
      highlightSearchMatches(cm, query);
      if (regexEqual(query, state.getQuery())) {
        return query;
      }
      state.setQuery(query);
      return query;
    }
    function searchOverlay(query) {
      if (query.source.charAt(0) == '^') {
        var matchSol = true;
      }
      return {
        token: function(stream) {
          if (matchSol && !stream.sol()) {
            stream.skipToEnd();
            return;
          }
          var match = stream.match(query, false);
          if (match) {
            if (match[0].length == 0) {
              // Matched empty string, skip to next.
              stream.next();
              return 'searching';
            }
            if (!stream.sol()) {
              // Backtrack 1 to match \b
              stream.backUp(1);
              if (!query.exec(stream.next() + match[0])) {
                stream.next();
                return null;
              }
            }
            stream.match(query);
            return 'searching';
          }
          while (!stream.eol()) {
            stream.next();
            if (stream.match(query, false)) break;
          }
        },
        query: query
      };
    }
    function highlightSearchMatches(cm, query) {
      var searchState = getSearchState(cm);
      var overlay = searchState.getOverlay();
      if (!overlay || query != overlay.query) {
        if (overlay) {
          cm.removeOverlay(overlay);
        }
        overlay = searchOverlay(query);
        cm.addOverlay(overlay);
        if (cm.showMatchesOnScrollbar) {
          if (searchState.getScrollbarAnnotate()) {
            searchState.getScrollbarAnnotate().clear();
          }
          searchState.setScrollbarAnnotate(cm.showMatchesOnScrollbar(query));
        }
        searchState.setOverlay(overlay);
      }
    }
    function findNext(cm, prev, query, repeat) {
      if (repeat === undefined) { repeat = 1; }
      return cm.operation(function() {
        var pos = cm.getCursor();
        var cursor = cm.getSearchCursor(query, pos);
        for (var i = 0; i < repeat; i++) {
          var found = cursor.find(prev);
          if (i == 0 && found && cursorEqual(cursor.from(), pos)) { found = cursor.find(prev); }
          if (!found) {
            // SearchCursor may have returned null because it hit EOF, wrap
            // around and try again.
            cursor = cm.getSearchCursor(query,
                (prev) ? Pos(cm.lastLine()) : Pos(cm.firstLine(), 0) );
            if (!cursor.find(prev)) {
              return;
            }
          }
        }
        return cursor.from();
      });
    }
    function clearSearchHighlight(cm) {
      var state = getSearchState(cm);
      cm.removeOverlay(getSearchState(cm).getOverlay());
      state.setOverlay(null);
      if (state.getScrollbarAnnotate()) {
        state.getScrollbarAnnotate().clear();
        state.setScrollbarAnnotate(null);
      }
    }
    /**
     * Check if pos is in the specified range, INCLUSIVE.
     * Range can be specified with 1 or 2 arguments.
     * If the first range argument is an array, treat it as an array of line
     * numbers. Match pos against any of the lines.
     * If the first range argument is a number,
     *   if there is only 1 range argument, check if pos has the same line
     *       number
     *   if there are 2 range arguments, then check if pos is in between the two
     *       range arguments.
     */
    function isInRange(pos, start, end) {
      if (typeof pos != 'number') {
        // Assume it is a cursor position. Get the line number.
        pos = pos.line;
      }
      if (start instanceof Array) {
        return inArray(pos, start);
      } else {
        if (end) {
          return (pos >= start && pos <= end);
        } else {
          return pos == start;
        }
      }
    }
    function getUserVisibleLines(cm) {
      var scrollInfo = cm.getScrollInfo();
      var occludeToleranceTop = 6;
      var occludeToleranceBottom = 10;
      var from = cm.coordsChar({left:0, top: occludeToleranceTop + scrollInfo.top}, 'local');
      var bottomY = scrollInfo.clientHeight - occludeToleranceBottom + scrollInfo.top;
      var to = cm.coordsChar({left:0, top: bottomY}, 'local');
      return {top: from.line, bottom: to.line};
    }

    function getMarkPos(cm, vim, markName) {
      if (markName == '\'') {
        var history = cm.doc.history.done;
        var event = history[history.length - 2];
        return event && event.ranges && event.ranges[0].head;
      } else if (markName == '.') {
        if (cm.doc.history.lastModTime == 0) {
          return  // If no changes, bail out; don't bother to copy or reverse history array.
        } else {
          var changeHistory = cm.doc.history.done.filter(function(el){ if (el.changes !== undefined) { return el } });
          changeHistory.reverse();
          var lastEditPos = changeHistory[0].changes[0].to;
        }
        return lastEditPos;
      }

      var mark = vim.marks[markName];
      return mark && mark.find();
    }

    var ExCommandDispatcher = function() {
      this.buildCommandMap_();
    };
    ExCommandDispatcher.prototype = {
      processCommand: function(cm, input, opt_params) {
        var that = this;
        cm.operation(function () {
          cm.curOp.isVimOp = true;
          that._processCommand(cm, input, opt_params);
        });
      },
      _processCommand: function(cm, input, opt_params) {
        var vim = cm.state.vim;
        var commandHistoryRegister = vimGlobalState.registerController.getRegister(':');
        var previousCommand = commandHistoryRegister.toString();
        if (vim.visualMode) {
          exitVisualMode(cm);
        }
        var inputStream = new CodeMirror.StringStream(input);
        // update ": with the latest command whether valid or invalid
        commandHistoryRegister.setText(input);
        var params = opt_params || {};
        params.input = input;
        try {
          this.parseInput_(cm, inputStream, params);
        } catch(e) {
          showConfirm(cm, e);
          throw e;
        }
        var command;
        var commandName;
        if (!params.commandName) {
          // If only a line range is defined, move to the line.
          if (params.line !== undefined) {
            commandName = 'move';
          }
        } else {
          command = this.matchCommand_(params.commandName);
          if (command) {
            commandName = command.name;
            if (command.excludeFromCommandHistory) {
              commandHistoryRegister.setText(previousCommand);
            }
            this.parseCommandArgs_(inputStream, params, command);
            if (command.type == 'exToKey') {
              // Handle Ex to Key mapping.
              for (var i = 0; i < command.toKeys.length; i++) {
                CodeMirror.Vim.handleKey(cm, command.toKeys[i], 'mapping');
              }
              return;
            } else if (command.type == 'exToEx') {
              // Handle Ex to Ex mapping.
              this.processCommand(cm, command.toInput);
              return;
            }
          }
        }
        if (!commandName) {
          showConfirm(cm, 'Not an editor command ":' + input + '"');
          return;
        }
        try {
          exCommands[commandName](cm, params);
          // Possibly asynchronous commands (e.g. substitute, which might have a
          // user confirmation), are responsible for calling the callback when
          // done. All others have it taken care of for them here.
          if ((!command || !command.possiblyAsync) && params.callback) {
            params.callback();
          }
        } catch(e) {
          showConfirm(cm, e);
          throw e;
        }
      },
      parseInput_: function(cm, inputStream, result) {
        inputStream.eatWhile(':');
        // Parse range.
        if (inputStream.eat('%')) {
          result.line = cm.firstLine();
          result.lineEnd = cm.lastLine();
        } else {
          result.line = this.parseLineSpec_(cm, inputStream);
          if (result.line !== undefined && inputStream.eat(',')) {
            result.lineEnd = this.parseLineSpec_(cm, inputStream);
          }
        }

        // Parse command name.
        var commandMatch = inputStream.match(/^(\w+)/);
        if (commandMatch) {
          result.commandName = commandMatch[1];
        } else {
          result.commandName = inputStream.match(/.*/)[0];
        }

        return result;
      },
      parseLineSpec_: function(cm, inputStream) {
        var numberMatch = inputStream.match(/^(\d+)/);
        if (numberMatch) {
          // Absolute line number plus offset (N+M or N-M) is probably a typo,
          // not something the user actually wanted. (NB: vim does allow this.)
          return parseInt(numberMatch[1], 10) - 1;
        }
        switch (inputStream.next()) {
          case '.':
            return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
          case '$':
            return this.parseLineSpecOffset_(inputStream, cm.lastLine());
          case '\'':
            var markName = inputStream.next();
            var markPos = getMarkPos(cm, cm.state.vim, markName);
            if (!markPos) throw new Error('Mark not set');
            return this.parseLineSpecOffset_(inputStream, markPos.line);
          case '-':
          case '+':
            inputStream.backUp(1);
            // Offset is relative to current line if not otherwise specified.
            return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
          default:
            inputStream.backUp(1);
            return undefined;
        }
      },
      parseLineSpecOffset_: function(inputStream, line) {
        var offsetMatch = inputStream.match(/^([+-])?(\d+)/);
        if (offsetMatch) {
          var offset = parseInt(offsetMatch[2], 10);
          if (offsetMatch[1] == "-") {
            line -= offset;
          } else {
            line += offset;
          }
        }
        return line;
      },
      parseCommandArgs_: function(inputStream, params, command) {
        if (inputStream.eol()) {
          return;
        }
        params.argString = inputStream.match(/.*/)[0];
        // Parse command-line arguments
        var delim = command.argDelimiter || /\s+/;
        var args = trim(params.argString).split(delim);
        if (args.length && args[0]) {
          params.args = args;
        }
      },
      matchCommand_: function(commandName) {
        // Return the command in the command map that matches the shortest
        // prefix of the passed in command name. The match is guaranteed to be
        // unambiguous if the defaultExCommandMap's shortNames are set up
        // correctly. (see @code{defaultExCommandMap}).
        for (var i = commandName.length; i > 0; i--) {
          var prefix = commandName.substring(0, i);
          if (this.commandMap_[prefix]) {
            var command = this.commandMap_[prefix];
            if (command.name.indexOf(commandName) === 0) {
              return command;
            }
          }
        }
        return null;
      },
      buildCommandMap_: function() {
        this.commandMap_ = {};
        for (var i = 0; i < defaultExCommandMap.length; i++) {
          var command = defaultExCommandMap[i];
          var key = command.shortName || command.name;
          this.commandMap_[key] = command;
        }
      },
      map: function(lhs, rhs, ctx) {
        if (lhs != ':' && lhs.charAt(0) == ':') {
          if (ctx) { throw Error('Mode not supported for ex mappings'); }
          var commandName = lhs.substring(1);
          if (rhs != ':' && rhs.charAt(0) == ':') {
            // Ex to Ex mapping
            this.commandMap_[commandName] = {
              name: commandName,
              type: 'exToEx',
              toInput: rhs.substring(1),
              user: true
            };
          } else {
            // Ex to key mapping
            this.commandMap_[commandName] = {
              name: commandName,
              type: 'exToKey',
              toKeys: rhs,
              user: true
            };
          }
        } else {
          if (rhs != ':' && rhs.charAt(0) == ':') {
            // Key to Ex mapping.
            var mapping = {
              keys: lhs,
              type: 'keyToEx',
              exArgs: { input: rhs.substring(1) }
            };
            if (ctx) { mapping.context = ctx; }
            defaultKeymap.unshift(mapping);
          } else {
            // Key to key mapping
            var mapping = {
              keys: lhs,
              type: 'keyToKey',
              toKeys: rhs
            };
            if (ctx) { mapping.context = ctx; }
            defaultKeymap.unshift(mapping);
          }
        }
      },
      unmap: function(lhs, ctx) {
        if (lhs != ':' && lhs.charAt(0) == ':') {
          // Ex to Ex or Ex to key mapping
          if (ctx) { throw Error('Mode not supported for ex mappings'); }
          var commandName = lhs.substring(1);
          if (this.commandMap_[commandName] && this.commandMap_[commandName].user) {
            delete this.commandMap_[commandName];
            return;
          }
        } else {
          // Key to Ex or key to key mapping
          var keys = lhs;
          for (var i = 0; i < defaultKeymap.length; i++) {
            if (keys == defaultKeymap[i].keys
                && defaultKeymap[i].context === ctx) {
              defaultKeymap.splice(i, 1);
              return;
            }
          }
        }
        throw Error('No such mapping.');
      }
    };

    var exCommands = {
      colorscheme: function(cm, params) {
        if (!params.args || params.args.length < 1) {
          showConfirm(cm, cm.getOption('theme'));
          return;
        }
        cm.setOption('theme', params.args[0]);
      },
      map: function(cm, params, ctx) {
        var mapArgs = params.args;
        if (!mapArgs || mapArgs.length < 2) {
          if (cm) {
            showConfirm(cm, 'Invalid mapping: ' + params.input);
          }
          return;
        }
        exCommandDispatcher.map(mapArgs[0], mapArgs[1], ctx);
      },
      imap: function(cm, params) { this.map(cm, params, 'insert'); },
      nmap: function(cm, params) { this.map(cm, params, 'normal'); },
      vmap: function(cm, params) { this.map(cm, params, 'visual'); },
      unmap: function(cm, params, ctx) {
        var mapArgs = params.args;
        if (!mapArgs || mapArgs.length < 1) {
          if (cm) {
            showConfirm(cm, 'No such mapping: ' + params.input);
          }
          return;
        }
        exCommandDispatcher.unmap(mapArgs[0], ctx);
      },
      move: function(cm, params) {
        commandDispatcher.processCommand(cm, cm.state.vim, {
            type: 'motion',
            motion: 'moveToLineOrEdgeOfDocument',
            motionArgs: { forward: false, explicitRepeat: true,
              linewise: true },
            repeatOverride: params.line+1});
      },
      set: function(cm, params) {
        var setArgs = params.args;
        // Options passed through to the setOption/getOption calls. May be passed in by the
        // local/global versions of the set command
        var setCfg = params.setCfg || {};
        if (!setArgs || setArgs.length < 1) {
          if (cm) {
            showConfirm(cm, 'Invalid mapping: ' + params.input);
          }
          return;
        }
        var expr = setArgs[0].split('=');
        var optionName = expr[0];
        var value = expr[1];
        var forceGet = false;

        if (optionName.charAt(optionName.length - 1) == '?') {
          // If post-fixed with ?, then the set is actually a get.
          if (value) { throw Error('Trailing characters: ' + params.argString); }
          optionName = optionName.substring(0, optionName.length - 1);
          forceGet = true;
        }
        if (value === undefined && optionName.substring(0, 2) == 'no') {
          // To set boolean options to false, the option name is prefixed with
          // 'no'.
          optionName = optionName.substring(2);
          value = false;
        }

        var optionIsBoolean = options[optionName] && options[optionName].type == 'boolean';
        if (optionIsBoolean && value == undefined) {
          // Calling set with a boolean option sets it to true.
          value = true;
        }
        // If no value is provided, then we assume this is a get.
        if (!optionIsBoolean && value === undefined || forceGet) {
          var oldValue = getOption(optionName, cm, setCfg);
          if (oldValue instanceof Error) {
            showConfirm(cm, oldValue.message);
          } else if (oldValue === true || oldValue === false) {
            showConfirm(cm, ' ' + (oldValue ? '' : 'no') + optionName);
          } else {
            showConfirm(cm, '  ' + optionName + '=' + oldValue);
          }
        } else {
          var setOptionReturn = setOption(optionName, value, cm, setCfg);
          if (setOptionReturn instanceof Error) {
            showConfirm(cm, setOptionReturn.message);
          }
        }
      },
      setlocal: function (cm, params) {
        // setCfg is passed through to setOption
        params.setCfg = {scope: 'local'};
        this.set(cm, params);
      },
      setglobal: function (cm, params) {
        // setCfg is passed through to setOption
        params.setCfg = {scope: 'global'};
        this.set(cm, params);
      },
      registers: function(cm, params) {
        var regArgs = params.args;
        var registers = vimGlobalState.registerController.registers;
        var regInfo = '----------Registers----------<br><br>';
        if (!regArgs) {
          for (var registerName in registers) {
            var text = registers[registerName].toString();
            if (text.length) {
              regInfo += '"' + registerName + '    ' + text + '<br>';
            }
          }
        } else {
          var registerName;
          regArgs = regArgs.join('');
          for (var i = 0; i < regArgs.length; i++) {
            registerName = regArgs.charAt(i);
            if (!vimGlobalState.registerController.isValidRegister(registerName)) {
              continue;
            }
            var register = registers[registerName] || new Register();
            regInfo += '"' + registerName + '    ' + register.toString() + '<br>';
          }
        }
        showConfirm(cm, regInfo);
      },
      sort: function(cm, params) {
        var reverse, ignoreCase, unique, number, pattern;
        function parseArgs() {
          if (params.argString) {
            var args = new CodeMirror.StringStream(params.argString);
            if (args.eat('!')) { reverse = true; }
            if (args.eol()) { return; }
            if (!args.eatSpace()) { return 'Invalid arguments'; }
            var opts = args.match(/([dinuox]+)?\s*(\/.+\/)?\s*/);
            if (!opts && !args.eol()) { return 'Invalid arguments'; }
            if (opts[1]) {
              ignoreCase = opts[1].indexOf('i') != -1;
              unique = opts[1].indexOf('u') != -1;
              var decimal = opts[1].indexOf('d') != -1 || opts[1].indexOf('n') != -1 && 1;
              var hex = opts[1].indexOf('x') != -1 && 1;
              var octal = opts[1].indexOf('o') != -1 && 1;
              if (decimal + hex + octal > 1) { return 'Invalid arguments'; }
              number = decimal && 'decimal' || hex && 'hex' || octal && 'octal';
            }
            if (opts[2]) {
              pattern = new RegExp(opts[2].substr(1, opts[2].length - 2), ignoreCase ? 'i' : '');
            }
          }
        }
        var err = parseArgs();
        if (err) {
          showConfirm(cm, err + ': ' + params.argString);
          return;
        }
        var lineStart = params.line || cm.firstLine();
        var lineEnd = params.lineEnd || params.line || cm.lastLine();
        if (lineStart == lineEnd) { return; }
        var curStart = Pos(lineStart, 0);
        var curEnd = Pos(lineEnd, lineLength(cm, lineEnd));
        var text = cm.getRange(curStart, curEnd).split('\n');
        var numberRegex = pattern ? pattern :
           (number == 'decimal') ? /(-?)([\d]+)/ :
           (number == 'hex') ? /(-?)(?:0x)?([0-9a-f]+)/i :
           (number == 'octal') ? /([0-7]+)/ : null;
        var radix = (number == 'decimal') ? 10 : (number == 'hex') ? 16 : (number == 'octal') ? 8 : null;
        var numPart = [], textPart = [];
        if (number || pattern) {
          for (var i = 0; i < text.length; i++) {
            var matchPart = pattern ? text[i].match(pattern) : null;
            if (matchPart && matchPart[0] != '') {
              numPart.push(matchPart);
            } else if (!pattern && numberRegex.exec(text[i])) {
              numPart.push(text[i]);
            } else {
              textPart.push(text[i]);
            }
          }
        } else {
          textPart = text;
        }
        function compareFn(a, b) {
          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
          if (ignoreCase) { a = a.toLowerCase(); b = b.toLowerCase(); }
          var anum = number && numberRegex.exec(a);
          var bnum = number && numberRegex.exec(b);
          if (!anum) { return a < b ? -1 : 1; }
          anum = parseInt((anum[1] + anum[2]).toLowerCase(), radix);
          bnum = parseInt((bnum[1] + bnum[2]).toLowerCase(), radix);
          return anum - bnum;
        }
        function comparePatternFn(a, b) {
          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
          if (ignoreCase) { a[0] = a[0].toLowerCase(); b[0] = b[0].toLowerCase(); }
          return (a[0] < b[0]) ? -1 : 1;
        }
        numPart.sort(pattern ? comparePatternFn : compareFn);
        if (pattern) {
          for (var i = 0; i < numPart.length; i++) {
            numPart[i] = numPart[i].input;
          }
        } else if (!number) { textPart.sort(compareFn); }
        text = (!reverse) ? textPart.concat(numPart) : numPart.concat(textPart);
        if (unique) { // Remove duplicate lines
          var textOld = text;
          var lastLine;
          text = [];
          for (var i = 0; i < textOld.length; i++) {
            if (textOld[i] != lastLine) {
              text.push(textOld[i]);
            }
            lastLine = textOld[i];
          }
        }
        cm.replaceRange(text.join('\n'), curStart, curEnd);
      },
      global: function(cm, params) {
        // a global command is of the form
        // :[range]g/pattern/[cmd]
        // argString holds the string /pattern/[cmd]
        var argString = params.argString;
        if (!argString) {
          showConfirm(cm, 'Regular Expression missing from global');
          return;
        }
        // range is specified here
        var lineStart = (params.line !== undefined) ? params.line : cm.firstLine();
        var lineEnd = params.lineEnd || params.line || cm.lastLine();
        // get the tokens from argString
        var tokens = splitBySlash(argString);
        var regexPart = argString, cmd;
        if (tokens.length) {
          regexPart = tokens[0];
          cmd = tokens.slice(1, tokens.length).join('/');
        }
        if (regexPart) {
          // If regex part is empty, then use the previous query. Otherwise
          // use the regex part as the new query.
          try {
           updateSearchQuery(cm, regexPart, true /** ignoreCase */,
             true /** smartCase */);
          } catch (e) {
           showConfirm(cm, 'Invalid regex: ' + regexPart);
           return;
          }
        }
        // now that we have the regexPart, search for regex matches in the
        // specified range of lines
        var query = getSearchState(cm).getQuery();
        var matchedLines = [], content = '';
        for (var i = lineStart; i <= lineEnd; i++) {
          var matched = query.test(cm.getLine(i));
          if (matched) {
            matchedLines.push(i+1);
            content+= cm.getLine(i) + '<br>';
          }
        }
        // if there is no [cmd], just display the list of matched lines
        if (!cmd) {
          showConfirm(cm, content);
          return;
        }
        var index = 0;
        var nextCommand = function() {
          if (index < matchedLines.length) {
            var command = matchedLines[index] + cmd;
            exCommandDispatcher.processCommand(cm, command, {
              callback: nextCommand
            });
          }
          index++;
        };
        nextCommand();
      },
      substitute: function(cm, params) {
        if (!cm.getSearchCursor) {
          throw new Error('Search feature not available. Requires searchcursor.js or ' +
              'any other getSearchCursor implementation.');
        }
        var argString = params.argString;
        var tokens = argString ? splitBySeparator(argString, argString[0]) : [];
        var regexPart, replacePart = '', trailing, flagsPart, count;
        var confirm = false; // Whether to confirm each replace.
        var global = false; // True to replace all instances on a line, false to replace only 1.
        if (tokens.length) {
          regexPart = tokens[0];
          replacePart = tokens[1];
          if (regexPart && regexPart[regexPart.length - 1] === '$') {
            regexPart = regexPart.slice(0, regexPart.length - 1) + '\\n';
            replacePart = replacePart ? replacePart + '\n' : '\n';
          }
          if (replacePart !== undefined) {
            if (getOption('pcre')) {
              replacePart = unescapeRegexReplace(replacePart);
            } else {
              replacePart = translateRegexReplace(replacePart);
            }
            vimGlobalState.lastSubstituteReplacePart = replacePart;
          }
          trailing = tokens[2] ? tokens[2].split(' ') : [];
        } else {
          // either the argString is empty or its of the form ' hello/world'
          // actually splitBySlash returns a list of tokens
          // only if the string starts with a '/'
          if (argString && argString.length) {
            showConfirm(cm, 'Substitutions should be of the form ' +
                ':s/pattern/replace/');
            return;
          }
        }
        // After the 3rd slash, we can have flags followed by a space followed
        // by count.
        if (trailing) {
          flagsPart = trailing[0];
          count = parseInt(trailing[1]);
          if (flagsPart) {
            if (flagsPart.indexOf('c') != -1) {
              confirm = true;
              flagsPart.replace('c', '');
            }
            if (flagsPart.indexOf('g') != -1) {
              global = true;
              flagsPart.replace('g', '');
            }
            regexPart = regexPart.replace(/\//g, "\\/") + '/' + flagsPart;
          }
        }
        if (regexPart) {
          // If regex part is empty, then use the previous query. Otherwise use
          // the regex part as the new query.
          try {
            updateSearchQuery(cm, regexPart, true /** ignoreCase */,
              true /** smartCase */);
          } catch (e) {
            showConfirm(cm, 'Invalid regex: ' + regexPart);
            return;
          }
        }
        replacePart = replacePart || vimGlobalState.lastSubstituteReplacePart;
        if (replacePart === undefined) {
          showConfirm(cm, 'No previous substitute regular expression');
          return;
        }
        var state = getSearchState(cm);
        var query = state.getQuery();
        var lineStart = (params.line !== undefined) ? params.line : cm.getCursor().line;
        var lineEnd = params.lineEnd || lineStart;
        if (lineStart == cm.firstLine() && lineEnd == cm.lastLine()) {
          lineEnd = Infinity;
        }
        if (count) {
          lineStart = lineEnd;
          lineEnd = lineStart + count - 1;
        }
        var startPos = clipCursorToContent(cm, Pos(lineStart, 0));
        var cursor = cm.getSearchCursor(query, startPos);
        doReplace(cm, confirm, global, lineStart, lineEnd, cursor, query, replacePart, params.callback);
      },
      redo: CodeMirror.commands.redo,
      undo: CodeMirror.commands.undo,
      write: function(cm) {
        if (CodeMirror.commands.save) {
          // If a save command is defined, call it.
          CodeMirror.commands.save(cm);
        } else if (cm.save) {
          // Saves to text area if no save command is defined and cm.save() is available.
          cm.save();
        }
      },
      nohlsearch: function(cm) {
        clearSearchHighlight(cm);
      },
      yank: function (cm) {
        var cur = copyCursor(cm.getCursor());
        var line = cur.line;
        var lineText = cm.getLine(line);
        vimGlobalState.registerController.pushText(
          '0', 'yank', lineText, true, true);
      },
      delmarks: function(cm, params) {
        if (!params.argString || !trim(params.argString)) {
          showConfirm(cm, 'Argument required');
          return;
        }

        var state = cm.state.vim;
        var stream = new CodeMirror.StringStream(trim(params.argString));
        while (!stream.eol()) {
          stream.eatSpace();

          // Record the streams position at the beginning of the loop for use
          // in error messages.
          var count = stream.pos;

          if (!stream.match(/[a-zA-Z]/, false)) {
            showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
            return;
          }

          var sym = stream.next();
          // Check if this symbol is part of a range
          if (stream.match('-', true)) {
            // This symbol is part of a range.

            // The range must terminate at an alphabetic character.
            if (!stream.match(/[a-zA-Z]/, false)) {
              showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
              return;
            }

            var startMark = sym;
            var finishMark = stream.next();
            // The range must terminate at an alphabetic character which
            // shares the same case as the start of the range.
            if (isLowerCase(startMark) && isLowerCase(finishMark) ||
                isUpperCase(startMark) && isUpperCase(finishMark)) {
              var start = startMark.charCodeAt(0);
              var finish = finishMark.charCodeAt(0);
              if (start >= finish) {
                showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
                return;
              }

              // Because marks are always ASCII values, and we have
              // determined that they are the same case, we can use
              // their char codes to iterate through the defined range.
              for (var j = 0; j <= finish - start; j++) {
                var mark = String.fromCharCode(start + j);
                delete state.marks[mark];
              }
            } else {
              showConfirm(cm, 'Invalid argument: ' + startMark + '-');
              return;
            }
          } else {
            // This symbol is a valid mark, and is not part of a range.
            delete state.marks[sym];
          }
        }
      }
    };

    var exCommandDispatcher = new ExCommandDispatcher();

    /**
    * @param {CodeMirror} cm CodeMirror instance we are in.
    * @param {boolean} confirm Whether to confirm each replace.
    * @param {Cursor} lineStart Line to start replacing from.
    * @param {Cursor} lineEnd Line to stop replacing at.
    * @param {RegExp} query Query for performing matches with.
    * @param {string} replaceWith Text to replace matches with. May contain $1,
    *     $2, etc for replacing captured groups using Javascript replace.
    * @param {function()} callback A callback for when the replace is done.
    */
    function doReplace(cm, confirm, global, lineStart, lineEnd, searchCursor, query,
        replaceWith, callback) {
      // Set up all the functions.
      cm.state.vim.exMode = true;
      var done = false;
      var lastPos = searchCursor.from();
      function replaceAll() {
        cm.operation(function() {
          while (!done) {
            replace();
            next();
          }
          stop();
        });
      }
      function replace() {
        var text = cm.getRange(searchCursor.from(), searchCursor.to());
        var newText = text.replace(query, replaceWith);
        searchCursor.replace(newText);
      }
      function next() {
        // The below only loops to skip over multiple occurrences on the same
        // line when 'global' is not true.
        while(searchCursor.findNext() &&
              isInRange(searchCursor.from(), lineStart, lineEnd)) {
          if (!global && lastPos && searchCursor.from().line == lastPos.line) {
            continue;
          }
          cm.scrollIntoView(searchCursor.from(), 30);
          cm.setSelection(searchCursor.from(), searchCursor.to());
          lastPos = searchCursor.from();
          done = false;
          return;
        }
        done = true;
      }
      function stop(close) {
        if (close) { close(); }
        cm.focus();
        if (lastPos) {
          cm.setCursor(lastPos);
          var vim = cm.state.vim;
          vim.exMode = false;
          vim.lastHPos = vim.lastHSPos = lastPos.ch;
        }
        if (callback) { callback(); }
      }
      function onPromptKeyDown(e, _value, close) {
        // Swallow all keys.
        CodeMirror.e_stop(e);
        var keyName = CodeMirror.keyName(e);
        switch (keyName) {
          case 'Y':
            replace(); next(); break;
          case 'N':
            next(); break;
          case 'A':
            // replaceAll contains a call to close of its own. We don't want it
            // to fire too early or multiple times.
            var savedCallback = callback;
            callback = undefined;
            cm.operation(replaceAll);
            callback = savedCallback;
            break;
          case 'L':
            replace();
            // fall through and exit.
          case 'Q':
          case 'Esc':
          case 'Ctrl-C':
          case 'Ctrl-[':
            stop(close);
            break;
        }
        if (done) { stop(close); }
        return true;
      }

      // Actually do replace.
      next();
      if (done) {
        showConfirm(cm, 'No matches for ' + query.source);
        return;
      }
      if (!confirm) {
        replaceAll();
        if (callback) { callback(); }
        return;
      }
      showPrompt(cm, {
        prefix: 'replace with <strong>' + replaceWith + '</strong> (y/n/a/q/l)',
        onKeyDown: onPromptKeyDown
      });
    }

    CodeMirror.keyMap.vim = {
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    function exitInsertMode(cm) {
      var vim = cm.state.vim;
      var macroModeState = vimGlobalState.macroModeState;
      var insertModeChangeRegister = vimGlobalState.registerController.getRegister('.');
      var isPlaying = macroModeState.isPlaying;
      var lastChange = macroModeState.lastInsertModeChanges;
      if (!isPlaying) {
        cm.off('change', onChange);
        CodeMirror.off(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
      }
      if (!isPlaying && vim.insertModeRepeat > 1) {
        // Perform insert mode repeat for commands like 3,a and 3,o.
        repeatLastEdit(cm, vim, vim.insertModeRepeat - 1,
            true /** repeatForInsert */);
        vim.lastEditInputState.repeatOverride = vim.insertModeRepeat;
      }
      delete vim.insertModeRepeat;
      vim.insertMode = false;
      cm.setCursor(cm.getCursor().line, cm.getCursor().ch-1);
      cm.setOption('keyMap', 'vim');
      cm.setOption('disableInput', true);
      cm.toggleOverwrite(false); // exit replace mode if we were in it.
      // update the ". register before exiting insert mode
      insertModeChangeRegister.setText(lastChange.changes.join(''));
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      if (macroModeState.isRecording) {
        logInsertModeChange(macroModeState);
      }
    }

    function _mapCommand(command) {
      defaultKeymap.unshift(command);
    }

    function mapCommand(keys, type, name, args, extra) {
      var command = {keys: keys, type: type};
      command[type] = name;
      command[type + "Args"] = args;
      for (var key in extra)
        command[key] = extra[key];
      _mapCommand(command);
    }

    // The timeout in milliseconds for the two-character ESC keymap should be
    // adjusted according to your typing speed to prevent false positives.
    defineOption('insertModeEscKeysTimeout', 200, 'number');

    CodeMirror.keyMap['vim-insert'] = {
      // TODO: override navigation keys so that Esc will cancel automatic
      // indentation from o, O, i_<CR>
      fallthrough: ['default'],
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    CodeMirror.keyMap['vim-replace'] = {
      'Backspace': 'goCharLeft',
      fallthrough: ['vim-insert'],
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    function executeMacroRegister(cm, vim, macroModeState, registerName) {
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (registerName == ':') {
        // Read-only register containing last Ex command.
        if (register.keyBuffer[0]) {
          exCommandDispatcher.processCommand(cm, register.keyBuffer[0]);
        }
        macroModeState.isPlaying = false;
        return;
      }
      var keyBuffer = register.keyBuffer;
      var imc = 0;
      macroModeState.isPlaying = true;
      macroModeState.replaySearchQueries = register.searchQueries.slice(0);
      for (var i = 0; i < keyBuffer.length; i++) {
        var text = keyBuffer[i];
        var match, key;
        while (text) {
          // Pull off one command key, which is either a single character
          // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
          match = (/<\w+-.+?>|<\w+>|./).exec(text);
          key = match[0];
          text = text.substring(match.index + key.length);
          CodeMirror.Vim.handleKey(cm, key, 'macro');
          if (vim.insertMode) {
            var changes = register.insertModeChanges[imc++].changes;
            vimGlobalState.macroModeState.lastInsertModeChanges.changes =
                changes;
            repeatInsertModeChanges(cm, changes, 1);
            exitInsertMode(cm);
          }
        }
      }
      macroModeState.isPlaying = false;
    }

    function logKey(macroModeState, key) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register) {
        register.pushText(key);
      }
    }

    function logInsertModeChange(macroModeState) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register && register.pushInsertModeChanges) {
        register.pushInsertModeChanges(macroModeState.lastInsertModeChanges);
      }
    }

    function logSearchQuery(macroModeState, query) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register && register.pushSearchQuery) {
        register.pushSearchQuery(query);
      }
    }

    /**
     * Listens for changes made in insert mode.
     * Should only be active in insert mode.
     */
    function onChange(cm, changeObj) {
      var macroModeState = vimGlobalState.macroModeState;
      var lastChange = macroModeState.lastInsertModeChanges;
      if (!macroModeState.isPlaying) {
        while(changeObj) {
          lastChange.expectCursorActivityForChange = true;
          if (lastChange.ignoreCount > 1) {
            lastChange.ignoreCount--;
          } else if (changeObj.origin == '+input' || changeObj.origin == 'paste'
              || changeObj.origin === undefined /* only in testing */) {
            var selectionCount = cm.listSelections().length;
            if (selectionCount > 1)
              lastChange.ignoreCount = selectionCount;
            var text = changeObj.text.join('\n');
            if (lastChange.maybeReset) {
              lastChange.changes = [];
              lastChange.maybeReset = false;
            }
            if (text) {
              if (cm.state.overwrite && !/\n/.test(text)) {
                lastChange.changes.push([text]);
              } else {
                lastChange.changes.push(text);
              }
            }
          }
          // Change objects may be chained with next.
          changeObj = changeObj.next;
        }
      }
    }

    /**
    * Listens for any kind of cursor activity on CodeMirror.
    */
    function onCursorActivity(cm) {
      var vim = cm.state.vim;
      if (vim.insertMode) {
        // Tracking cursor activity in insert mode (for macro support).
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.isPlaying) { return; }
        var lastChange = macroModeState.lastInsertModeChanges;
        if (lastChange.expectCursorActivityForChange) {
          lastChange.expectCursorActivityForChange = false;
        } else {
          // Cursor moved outside the context of an edit. Reset the change.
          lastChange.maybeReset = true;
        }
      } else if (!cm.curOp.isVimOp) {
        handleExternalSelection(cm, vim);
      }
      if (vim.visualMode) {
        updateFakeCursor(cm);
      }
    }
    function updateFakeCursor(cm) {
      var vim = cm.state.vim;
      var from = clipCursorToContent(cm, copyCursor(vim.sel.head));
      var to = offsetCursor(from, 0, 1);
      if (vim.fakeCursor) {
        vim.fakeCursor.clear();
      }
      vim.fakeCursor = cm.markText(from, to, {className: 'cm-animate-fat-cursor'});
    }
    function handleExternalSelection(cm, vim) {
      var anchor = cm.getCursor('anchor');
      var head = cm.getCursor('head');
      // Enter or exit visual mode to match mouse selection.
      if (vim.visualMode && !cm.somethingSelected()) {
        exitVisualMode(cm, false);
      } else if (!vim.visualMode && !vim.insertMode && cm.somethingSelected()) {
        vim.visualMode = true;
        vim.visualLine = false;
        CodeMirror.signal(cm, "vim-mode-change", {mode: "visual"});
      }
      if (vim.visualMode) {
        // Bind CodeMirror selection model to vim selection model.
        // Mouse selections are considered visual characterwise.
        var headOffset = !cursorIsBefore(head, anchor) ? -1 : 0;
        var anchorOffset = cursorIsBefore(head, anchor) ? -1 : 0;
        head = offsetCursor(head, 0, headOffset);
        anchor = offsetCursor(anchor, 0, anchorOffset);
        vim.sel = {
          anchor: anchor,
          head: head
        };
        updateMark(cm, vim, '<', cursorMin(head, anchor));
        updateMark(cm, vim, '>', cursorMax(head, anchor));
      } else if (!vim.insertMode) {
        // Reset lastHPos if selection was modified by something outside of vim mode e.g. by mouse.
        vim.lastHPos = cm.getCursor().ch;
      }
    }

    /** Wrapper for special keys pressed in insert mode */
    function InsertModeKey(keyName) {
      this.keyName = keyName;
    }

    /**
    * Handles raw key down events from the text area.
    * - Should only be active in insert mode.
    * - For recording deletes in insert mode.
    */
    function onKeyEventTargetKeyDown(e) {
      var macroModeState = vimGlobalState.macroModeState;
      var lastChange = macroModeState.lastInsertModeChanges;
      var keyName = CodeMirror.keyName(e);
      if (!keyName) { return; }
      function onKeyFound() {
        if (lastChange.maybeReset) {
          lastChange.changes = [];
          lastChange.maybeReset = false;
        }
        lastChange.changes.push(new InsertModeKey(keyName));
        return true;
      }
      if (keyName.indexOf('Delete') != -1 || keyName.indexOf('Backspace') != -1) {
        CodeMirror.lookupKey(keyName, 'vim-insert', onKeyFound);
      }
    }

    /**
     * Repeats the last edit, which includes exactly 1 command and at most 1
     * insert. Operator and motion commands are read from lastEditInputState,
     * while action commands are read from lastEditActionCommand.
     *
     * If repeatForInsert is true, then the function was called by
     * exitInsertMode to repeat the insert mode changes the user just made. The
     * corresponding enterInsertMode call was made with a count.
     */
    function repeatLastEdit(cm, vim, repeat, repeatForInsert) {
      var macroModeState = vimGlobalState.macroModeState;
      macroModeState.isPlaying = true;
      var isAction = !!vim.lastEditActionCommand;
      var cachedInputState = vim.inputState;
      function repeatCommand() {
        if (isAction) {
          commandDispatcher.processAction(cm, vim, vim.lastEditActionCommand);
        } else {
          commandDispatcher.evalInput(cm, vim);
        }
      }
      function repeatInsert(repeat) {
        if (macroModeState.lastInsertModeChanges.changes.length > 0) {
          // For some reason, repeat cw in desktop VIM does not repeat
          // insert mode changes. Will conform to that behavior.
          repeat = !vim.lastEditActionCommand ? 1 : repeat;
          var changeObject = macroModeState.lastInsertModeChanges;
          repeatInsertModeChanges(cm, changeObject.changes, repeat);
        }
      }
      vim.inputState = vim.lastEditInputState;
      if (isAction && vim.lastEditActionCommand.interlaceInsertRepeat) {
        // o and O repeat have to be interlaced with insert repeats so that the
        // insertions appear on separate lines instead of the last line.
        for (var i = 0; i < repeat; i++) {
          repeatCommand();
          repeatInsert(1);
        }
      } else {
        if (!repeatForInsert) {
          // Hack to get the cursor to end up at the right place. If I is
          // repeated in insert mode repeat, cursor will be 1 insert
          // change set left of where it should be.
          repeatCommand();
        }
        repeatInsert(repeat);
      }
      vim.inputState = cachedInputState;
      if (vim.insertMode && !repeatForInsert) {
        // Don't exit insert mode twice. If repeatForInsert is set, then we
        // were called by an exitInsertMode call lower on the stack.
        exitInsertMode(cm);
      }
      macroModeState.isPlaying = false;
    }

    function repeatInsertModeChanges(cm, changes, repeat) {
      function keyHandler(binding) {
        if (typeof binding == 'string') {
          CodeMirror.commands[binding](cm);
        } else {
          binding(cm);
        }
        return true;
      }
      var head = cm.getCursor('head');
      var inVisualBlock = vimGlobalState.macroModeState.lastInsertModeChanges.inVisualBlock;
      if (inVisualBlock) {
        // Set up block selection again for repeating the changes.
        var vim = cm.state.vim;
        var lastSel = vim.lastSelection;
        var offset = getOffset(lastSel.anchor, lastSel.head);
        selectForInsert(cm, head, offset.line + 1);
        repeat = cm.listSelections().length;
        cm.setCursor(head);
      }
      for (var i = 0; i < repeat; i++) {
        if (inVisualBlock) {
          cm.setCursor(offsetCursor(head, i, 0));
        }
        for (var j = 0; j < changes.length; j++) {
          var change = changes[j];
          if (change instanceof InsertModeKey) {
            CodeMirror.lookupKey(change.keyName, 'vim-insert', keyHandler);
          } else if (typeof change == "string") {
            var cur = cm.getCursor();
            cm.replaceRange(change, cur, cur);
          } else {
            var start = cm.getCursor();
            var end = offsetCursor(start, 0, change[0].length);
            cm.replaceRange(change[0], start, end);
          }
        }
      }
      if (inVisualBlock) {
        cm.setCursor(offsetCursor(head, 0, 1));
      }
    }

    resetVimGlobalState();
    return vimApi;
  };
  // Initialize Vim and make it available as an API.
  CodeMirror.Vim = Vim();
});


/***/ }),
/* 481 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/keymap/sublime.js ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// A rough approximation of Sublime Text's keybindings
// Depends on addon/search/searchcursor.js and optionally addon/dialog/dialogs.js

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../lib/codemirror */ 43), __webpack_require__(/*! ../addon/search/searchcursor */ 191), __webpack_require__(/*! ../addon/edit/matchbrackets */ 190));
  else {}
})(function(CodeMirror) {
  "use strict";

  var cmds = CodeMirror.commands;
  var Pos = CodeMirror.Pos;

  // This is not exactly Sublime's algorithm. I couldn't make heads or tails of that.
  function findPosSubword(doc, start, dir) {
    if (dir < 0 && start.ch == 0) return doc.clipPos(Pos(start.line - 1));
    var line = doc.getLine(start.line);
    if (dir > 0 && start.ch >= line.length) return doc.clipPos(Pos(start.line + 1, 0));
    var state = "start", type;
    for (var pos = start.ch, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {
      var next = line.charAt(dir < 0 ? pos - 1 : pos);
      var cat = next != "_" && CodeMirror.isWordChar(next) ? "w" : "o";
      if (cat == "w" && next.toUpperCase() == next) cat = "W";
      if (state == "start") {
        if (cat != "o") { state = "in"; type = cat; }
      } else if (state == "in") {
        if (type != cat) {
          if (type == "w" && cat == "W" && dir < 0) pos--;
          if (type == "W" && cat == "w" && dir > 0) { type = "w"; continue; }
          break;
        }
      }
    }
    return Pos(start.line, pos);
  }

  function moveSubword(cm, dir) {
    cm.extendSelectionsBy(function(range) {
      if (cm.display.shift || cm.doc.extend || range.empty())
        return findPosSubword(cm.doc, range.head, dir);
      else
        return dir < 0 ? range.from() : range.to();
    });
  }

  cmds.goSubwordLeft = function(cm) { moveSubword(cm, -1); };
  cmds.goSubwordRight = function(cm) { moveSubword(cm, 1); };

  cmds.scrollLineUp = function(cm) {
    var info = cm.getScrollInfo();
    if (!cm.somethingSelected()) {
      var visibleBottomLine = cm.lineAtHeight(info.top + info.clientHeight, "local");
      if (cm.getCursor().line >= visibleBottomLine)
        cm.execCommand("goLineUp");
    }
    cm.scrollTo(null, info.top - cm.defaultTextHeight());
  };
  cmds.scrollLineDown = function(cm) {
    var info = cm.getScrollInfo();
    if (!cm.somethingSelected()) {
      var visibleTopLine = cm.lineAtHeight(info.top, "local")+1;
      if (cm.getCursor().line <= visibleTopLine)
        cm.execCommand("goLineDown");
    }
    cm.scrollTo(null, info.top + cm.defaultTextHeight());
  };

  cmds.splitSelectionByLine = function(cm) {
    var ranges = cm.listSelections(), lineRanges = [];
    for (var i = 0; i < ranges.length; i++) {
      var from = ranges[i].from(), to = ranges[i].to();
      for (var line = from.line; line <= to.line; ++line)
        if (!(to.line > from.line && line == to.line && to.ch == 0))
          lineRanges.push({anchor: line == from.line ? from : Pos(line, 0),
                           head: line == to.line ? to : Pos(line)});
    }
    cm.setSelections(lineRanges, 0);
  };

  cmds.singleSelectionTop = function(cm) {
    var range = cm.listSelections()[0];
    cm.setSelection(range.anchor, range.head, {scroll: false});
  };

  cmds.selectLine = function(cm) {
    var ranges = cm.listSelections(), extended = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      extended.push({anchor: Pos(range.from().line, 0),
                     head: Pos(range.to().line + 1, 0)});
    }
    cm.setSelections(extended);
  };

  function insertLine(cm, above) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    cm.operation(function() {
      var len = cm.listSelections().length, newSelection = [], last = -1;
      for (var i = 0; i < len; i++) {
        var head = cm.listSelections()[i].head;
        if (head.line <= last) continue;
        var at = Pos(head.line + (above ? 0 : 1), 0);
        cm.replaceRange("\n", at, null, "+insertLine");
        cm.indentLine(at.line, null, true);
        newSelection.push({head: at, anchor: at});
        last = head.line + 1;
      }
      cm.setSelections(newSelection);
    });
    cm.execCommand("indentAuto");
  }

  cmds.insertLineAfter = function(cm) { return insertLine(cm, false); };

  cmds.insertLineBefore = function(cm) { return insertLine(cm, true); };

  function wordAt(cm, pos) {
    var start = pos.ch, end = start, line = cm.getLine(pos.line);
    while (start && CodeMirror.isWordChar(line.charAt(start - 1))) --start;
    while (end < line.length && CodeMirror.isWordChar(line.charAt(end))) ++end;
    return {from: Pos(pos.line, start), to: Pos(pos.line, end), word: line.slice(start, end)};
  }

  cmds.selectNextOccurrence = function(cm) {
    var from = cm.getCursor("from"), to = cm.getCursor("to");
    var fullWord = cm.state.sublimeFindFullWord == cm.doc.sel;
    if (CodeMirror.cmpPos(from, to) == 0) {
      var word = wordAt(cm, from);
      if (!word.word) return;
      cm.setSelection(word.from, word.to);
      fullWord = true;
    } else {
      var text = cm.getRange(from, to);
      var query = fullWord ? new RegExp("\\b" + text + "\\b") : text;
      var cur = cm.getSearchCursor(query, to);
      var found = cur.findNext();
      if (!found) {
        cur = cm.getSearchCursor(query, Pos(cm.firstLine(), 0));
        found = cur.findNext();
      }
      if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to()))
        return CodeMirror.Pass
      cm.addSelection(cur.from(), cur.to());
    }
    if (fullWord)
      cm.state.sublimeFindFullWord = cm.doc.sel;
  };

  function addCursorToSelection(cm, dir) {
    var ranges = cm.listSelections(), newRanges = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      var newAnchor = cm.findPosV(
          range.anchor, dir, "line", range.anchor.goalColumn);
      var newHead = cm.findPosV(
          range.head, dir, "line", range.head.goalColumn);
      newAnchor.goalColumn = range.anchor.goalColumn != null ?
          range.anchor.goalColumn : cm.cursorCoords(range.anchor, "div").left;
      newHead.goalColumn = range.head.goalColumn != null ?
          range.head.goalColumn : cm.cursorCoords(range.head, "div").left;
      var newRange = {anchor: newAnchor, head: newHead};
      newRanges.push(range);
      newRanges.push(newRange);
    }
    cm.setSelections(newRanges);
  }
  cmds.addCursorToPrevLine = function(cm) { addCursorToSelection(cm, -1); };
  cmds.addCursorToNextLine = function(cm) { addCursorToSelection(cm, 1); };

  function isSelectedRange(ranges, from, to) {
    for (var i = 0; i < ranges.length; i++)
      if (ranges[i].from() == from && ranges[i].to() == to) return true
    return false
  }

  var mirror = "(){}[]";
  function selectBetweenBrackets(cm) {
    var ranges = cm.listSelections(), newRanges = []
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], pos = range.head, opening = cm.scanForBracket(pos, -1);
      if (!opening) return false;
      for (;;) {
        var closing = cm.scanForBracket(pos, 1);
        if (!closing) return false;
        if (closing.ch == mirror.charAt(mirror.indexOf(opening.ch) + 1)) {
          var startPos = Pos(opening.pos.line, opening.pos.ch + 1);
          if (CodeMirror.cmpPos(startPos, range.from()) == 0 &&
              CodeMirror.cmpPos(closing.pos, range.to()) == 0) {
            opening = cm.scanForBracket(opening.pos, -1);
            if (!opening) return false;
          } else {
            newRanges.push({anchor: startPos, head: closing.pos});
            break;
          }
        }
        pos = Pos(closing.pos.line, closing.pos.ch + 1);
      }
    }
    cm.setSelections(newRanges);
    return true;
  }

  cmds.selectScope = function(cm) {
    selectBetweenBrackets(cm) || cm.execCommand("selectAll");
  };
  cmds.selectBetweenBrackets = function(cm) {
    if (!selectBetweenBrackets(cm)) return CodeMirror.Pass;
  };

  cmds.goToBracket = function(cm) {
    cm.extendSelectionsBy(function(range) {
      var next = cm.scanForBracket(range.head, 1);
      if (next && CodeMirror.cmpPos(next.pos, range.head) != 0) return next.pos;
      var prev = cm.scanForBracket(range.head, -1);
      return prev && Pos(prev.pos.line, prev.pos.ch + 1) || range.head;
    });
  };

  cmds.swapLineUp = function(cm) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    var ranges = cm.listSelections(), linesToMove = [], at = cm.firstLine() - 1, newSels = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], from = range.from().line - 1, to = range.to().line;
      newSels.push({anchor: Pos(range.anchor.line - 1, range.anchor.ch),
                    head: Pos(range.head.line - 1, range.head.ch)});
      if (range.to().ch == 0 && !range.empty()) --to;
      if (from > at) linesToMove.push(from, to);
      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
      at = to;
    }
    cm.operation(function() {
      for (var i = 0; i < linesToMove.length; i += 2) {
        var from = linesToMove[i], to = linesToMove[i + 1];
        var line = cm.getLine(from);
        cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
        if (to > cm.lastLine())
          cm.replaceRange("\n" + line, Pos(cm.lastLine()), null, "+swapLine");
        else
          cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
      }
      cm.setSelections(newSels);
      cm.scrollIntoView();
    });
  };

  cmds.swapLineDown = function(cm) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    var ranges = cm.listSelections(), linesToMove = [], at = cm.lastLine() + 1;
    for (var i = ranges.length - 1; i >= 0; i--) {
      var range = ranges[i], from = range.to().line + 1, to = range.from().line;
      if (range.to().ch == 0 && !range.empty()) from--;
      if (from < at) linesToMove.push(from, to);
      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
      at = to;
    }
    cm.operation(function() {
      for (var i = linesToMove.length - 2; i >= 0; i -= 2) {
        var from = linesToMove[i], to = linesToMove[i + 1];
        var line = cm.getLine(from);
        if (from == cm.lastLine())
          cm.replaceRange("", Pos(from - 1), Pos(from), "+swapLine");
        else
          cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
        cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
      }
      cm.scrollIntoView();
    });
  };

  cmds.toggleCommentIndented = function(cm) {
    cm.toggleComment({ indent: true });
  }

  cmds.joinLines = function(cm) {
    var ranges = cm.listSelections(), joined = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], from = range.from();
      var start = from.line, end = range.to().line;
      while (i < ranges.length - 1 && ranges[i + 1].from().line == end)
        end = ranges[++i].to().line;
      joined.push({start: start, end: end, anchor: !range.empty() && from});
    }
    cm.operation(function() {
      var offset = 0, ranges = [];
      for (var i = 0; i < joined.length; i++) {
        var obj = joined[i];
        var anchor = obj.anchor && Pos(obj.anchor.line - offset, obj.anchor.ch), head;
        for (var line = obj.start; line <= obj.end; line++) {
          var actual = line - offset;
          if (line == obj.end) head = Pos(actual, cm.getLine(actual).length + 1);
          if (actual < cm.lastLine()) {
            cm.replaceRange(" ", Pos(actual), Pos(actual + 1, /^\s*/.exec(cm.getLine(actual + 1))[0].length));
            ++offset;
          }
        }
        ranges.push({anchor: anchor || head, head: head});
      }
      cm.setSelections(ranges, 0);
    });
  };

  cmds.duplicateLine = function(cm) {
    cm.operation(function() {
      var rangeCount = cm.listSelections().length;
      for (var i = 0; i < rangeCount; i++) {
        var range = cm.listSelections()[i];
        if (range.empty())
          cm.replaceRange(cm.getLine(range.head.line) + "\n", Pos(range.head.line, 0));
        else
          cm.replaceRange(cm.getRange(range.from(), range.to()), range.from());
      }
      cm.scrollIntoView();
    });
  };


  function sortLines(cm, caseSensitive) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    var ranges = cm.listSelections(), toSort = [], selected;
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      if (range.empty()) continue;
      var from = range.from().line, to = range.to().line;
      while (i < ranges.length - 1 && ranges[i + 1].from().line == to)
        to = ranges[++i].to().line;
      if (!ranges[i].to().ch) to--;
      toSort.push(from, to);
    }
    if (toSort.length) selected = true;
    else toSort.push(cm.firstLine(), cm.lastLine());

    cm.operation(function() {
      var ranges = [];
      for (var i = 0; i < toSort.length; i += 2) {
        var from = toSort[i], to = toSort[i + 1];
        var start = Pos(from, 0), end = Pos(to);
        var lines = cm.getRange(start, end, false);
        if (caseSensitive)
          lines.sort();
        else
          lines.sort(function(a, b) {
            var au = a.toUpperCase(), bu = b.toUpperCase();
            if (au != bu) { a = au; b = bu; }
            return a < b ? -1 : a == b ? 0 : 1;
          });
        cm.replaceRange(lines, start, end);
        if (selected) ranges.push({anchor: start, head: Pos(to + 1, 0)});
      }
      if (selected) cm.setSelections(ranges, 0);
    });
  }

  cmds.sortLines = function(cm) { sortLines(cm, true); };
  cmds.sortLinesInsensitive = function(cm) { sortLines(cm, false); };

  cmds.nextBookmark = function(cm) {
    var marks = cm.state.sublimeBookmarks;
    if (marks) while (marks.length) {
      var current = marks.shift();
      var found = current.find();
      if (found) {
        marks.push(current);
        return cm.setSelection(found.from, found.to);
      }
    }
  };

  cmds.prevBookmark = function(cm) {
    var marks = cm.state.sublimeBookmarks;
    if (marks) while (marks.length) {
      marks.unshift(marks.pop());
      var found = marks[marks.length - 1].find();
      if (!found)
        marks.pop();
      else
        return cm.setSelection(found.from, found.to);
    }
  };

  cmds.toggleBookmark = function(cm) {
    var ranges = cm.listSelections();
    var marks = cm.state.sublimeBookmarks || (cm.state.sublimeBookmarks = []);
    for (var i = 0; i < ranges.length; i++) {
      var from = ranges[i].from(), to = ranges[i].to();
      var found = ranges[i].empty() ? cm.findMarksAt(from) : cm.findMarks(from, to);
      for (var j = 0; j < found.length; j++) {
        if (found[j].sublimeBookmark) {
          found[j].clear();
          for (var k = 0; k < marks.length; k++)
            if (marks[k] == found[j])
              marks.splice(k--, 1);
          break;
        }
      }
      if (j == found.length)
        marks.push(cm.markText(from, to, {sublimeBookmark: true, clearWhenEmpty: false}));
    }
  };

  cmds.clearBookmarks = function(cm) {
    var marks = cm.state.sublimeBookmarks;
    if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();
    marks.length = 0;
  };

  cmds.selectBookmarks = function(cm) {
    var marks = cm.state.sublimeBookmarks, ranges = [];
    if (marks) for (var i = 0; i < marks.length; i++) {
      var found = marks[i].find();
      if (!found)
        marks.splice(i--, 0);
      else
        ranges.push({anchor: found.from, head: found.to});
    }
    if (ranges.length)
      cm.setSelections(ranges, 0);
  };

  function modifyWordOrSelection(cm, mod) {
    cm.operation(function() {
      var ranges = cm.listSelections(), indices = [], replacements = [];
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (range.empty()) { indices.push(i); replacements.push(""); }
        else replacements.push(mod(cm.getRange(range.from(), range.to())));
      }
      cm.replaceSelections(replacements, "around", "case");
      for (var i = indices.length - 1, at; i >= 0; i--) {
        var range = ranges[indices[i]];
        if (at && CodeMirror.cmpPos(range.head, at) > 0) continue;
        var word = wordAt(cm, range.head);
        at = word.from;
        cm.replaceRange(mod(word.word), word.from, word.to);
      }
    });
  }

  cmds.smartBackspace = function(cm) {
    if (cm.somethingSelected()) return CodeMirror.Pass;

    cm.operation(function() {
      var cursors = cm.listSelections();
      var indentUnit = cm.getOption("indentUnit");

      for (var i = cursors.length - 1; i >= 0; i--) {
        var cursor = cursors[i].head;
        var toStartOfLine = cm.getRange({line: cursor.line, ch: 0}, cursor);
        var column = CodeMirror.countColumn(toStartOfLine, null, cm.getOption("tabSize"));

        // Delete by one character by default
        var deletePos = cm.findPosH(cursor, -1, "char", false);

        if (toStartOfLine && !/\S/.test(toStartOfLine) && column % indentUnit == 0) {
          var prevIndent = new Pos(cursor.line,
            CodeMirror.findColumn(toStartOfLine, column - indentUnit, indentUnit));

          // Smart delete only if we found a valid prevIndent location
          if (prevIndent.ch != cursor.ch) deletePos = prevIndent;
        }

        cm.replaceRange("", deletePos, cursor, "+delete");
      }
    });
  };

  cmds.delLineRight = function(cm) {
    cm.operation(function() {
      var ranges = cm.listSelections();
      for (var i = ranges.length - 1; i >= 0; i--)
        cm.replaceRange("", ranges[i].anchor, Pos(ranges[i].to().line), "+delete");
      cm.scrollIntoView();
    });
  };

  cmds.upcaseAtCursor = function(cm) {
    modifyWordOrSelection(cm, function(str) { return str.toUpperCase(); });
  };
  cmds.downcaseAtCursor = function(cm) {
    modifyWordOrSelection(cm, function(str) { return str.toLowerCase(); });
  };

  cmds.setSublimeMark = function(cm) {
    if (cm.state.sublimeMark) cm.state.sublimeMark.clear();
    cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
  };
  cmds.selectToSublimeMark = function(cm) {
    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
    if (found) cm.setSelection(cm.getCursor(), found);
  };
  cmds.deleteToSublimeMark = function(cm) {
    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
    if (found) {
      var from = cm.getCursor(), to = found;
      if (CodeMirror.cmpPos(from, to) > 0) { var tmp = to; to = from; from = tmp; }
      cm.state.sublimeKilled = cm.getRange(from, to);
      cm.replaceRange("", from, to);
    }
  };
  cmds.swapWithSublimeMark = function(cm) {
    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
    if (found) {
      cm.state.sublimeMark.clear();
      cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
      cm.setCursor(found);
    }
  };
  cmds.sublimeYank = function(cm) {
    if (cm.state.sublimeKilled != null)
      cm.replaceSelection(cm.state.sublimeKilled, null, "paste");
  };

  cmds.showInCenter = function(cm) {
    var pos = cm.cursorCoords(null, "local");
    cm.scrollTo(null, (pos.top + pos.bottom) / 2 - cm.getScrollInfo().clientHeight / 2);
  };

  function getTarget(cm) {
    var from = cm.getCursor("from"), to = cm.getCursor("to");
    if (CodeMirror.cmpPos(from, to) == 0) {
      var word = wordAt(cm, from);
      if (!word.word) return;
      from = word.from;
      to = word.to;
    }
    return {from: from, to: to, query: cm.getRange(from, to), word: word};
  }

  function findAndGoTo(cm, forward) {
    var target = getTarget(cm);
    if (!target) return;
    var query = target.query;
    var cur = cm.getSearchCursor(query, forward ? target.to : target.from);

    if (forward ? cur.findNext() : cur.findPrevious()) {
      cm.setSelection(cur.from(), cur.to());
    } else {
      cur = cm.getSearchCursor(query, forward ? Pos(cm.firstLine(), 0)
                                              : cm.clipPos(Pos(cm.lastLine())));
      if (forward ? cur.findNext() : cur.findPrevious())
        cm.setSelection(cur.from(), cur.to());
      else if (target.word)
        cm.setSelection(target.from, target.to);
    }
  };
  cmds.findUnder = function(cm) { findAndGoTo(cm, true); };
  cmds.findUnderPrevious = function(cm) { findAndGoTo(cm,false); };
  cmds.findAllUnder = function(cm) {
    var target = getTarget(cm);
    if (!target) return;
    var cur = cm.getSearchCursor(target.query);
    var matches = [];
    var primaryIndex = -1;
    while (cur.findNext()) {
      matches.push({anchor: cur.from(), head: cur.to()});
      if (cur.from().line <= target.from.line && cur.from().ch <= target.from.ch)
        primaryIndex++;
    }
    cm.setSelections(matches, primaryIndex);
  };


  var keyMap = CodeMirror.keyMap;
  keyMap.macSublime = {
    "Cmd-Left": "goLineStartSmart",
    "Shift-Tab": "indentLess",
    "Shift-Ctrl-K": "deleteLine",
    "Alt-Q": "wrapLines",
    "Ctrl-Left": "goSubwordLeft",
    "Ctrl-Right": "goSubwordRight",
    "Ctrl-Alt-Up": "scrollLineUp",
    "Ctrl-Alt-Down": "scrollLineDown",
    "Cmd-L": "selectLine",
    "Shift-Cmd-L": "splitSelectionByLine",
    "Esc": "singleSelectionTop",
    "Cmd-Enter": "insertLineAfter",
    "Shift-Cmd-Enter": "insertLineBefore",
    "Cmd-D": "selectNextOccurrence",
    "Shift-Cmd-Space": "selectScope",
    "Shift-Cmd-M": "selectBetweenBrackets",
    "Cmd-M": "goToBracket",
    "Cmd-Ctrl-Up": "swapLineUp",
    "Cmd-Ctrl-Down": "swapLineDown",
    "Cmd-/": "toggleCommentIndented",
    "Cmd-J": "joinLines",
    "Shift-Cmd-D": "duplicateLine",
    "F9": "sortLines",
    "Cmd-F9": "sortLinesInsensitive",
    "F2": "nextBookmark",
    "Shift-F2": "prevBookmark",
    "Cmd-F2": "toggleBookmark",
    "Shift-Cmd-F2": "clearBookmarks",
    "Alt-F2": "selectBookmarks",
    "Backspace": "smartBackspace",
    "Cmd-K Cmd-K": "delLineRight",
    "Cmd-K Cmd-U": "upcaseAtCursor",
    "Cmd-K Cmd-L": "downcaseAtCursor",
    "Cmd-K Cmd-Space": "setSublimeMark",
    "Cmd-K Cmd-A": "selectToSublimeMark",
    "Cmd-K Cmd-W": "deleteToSublimeMark",
    "Cmd-K Cmd-X": "swapWithSublimeMark",
    "Cmd-K Cmd-Y": "sublimeYank",
    "Cmd-K Cmd-C": "showInCenter",
    "Cmd-K Cmd-G": "clearBookmarks",
    "Cmd-K Cmd-Backspace": "delLineLeft",
    "Cmd-K Cmd-0": "unfoldAll",
    "Cmd-K Cmd-J": "unfoldAll",
    "Ctrl-Shift-Up": "addCursorToPrevLine",
    "Ctrl-Shift-Down": "addCursorToNextLine",
    "Cmd-F3": "findUnder",
    "Shift-Cmd-F3": "findUnderPrevious",
    "Alt-F3": "findAllUnder",
    "Shift-Cmd-[": "fold",
    "Shift-Cmd-]": "unfold",
    "Cmd-I": "findIncremental",
    "Shift-Cmd-I": "findIncrementalReverse",
    "Cmd-H": "replace",
    "F3": "findNext",
    "Shift-F3": "findPrev",
    "fallthrough": "macDefault"
  };
  CodeMirror.normalizeKeyMap(keyMap.macSublime);

  keyMap.pcSublime = {
    "Shift-Tab": "indentLess",
    "Shift-Ctrl-K": "deleteLine",
    "Alt-Q": "wrapLines",
    "Ctrl-T": "transposeChars",
    "Alt-Left": "goSubwordLeft",
    "Alt-Right": "goSubwordRight",
    "Ctrl-Up": "scrollLineUp",
    "Ctrl-Down": "scrollLineDown",
    "Ctrl-L": "selectLine",
    "Shift-Ctrl-L": "splitSelectionByLine",
    "Esc": "singleSelectionTop",
    "Ctrl-Enter": "insertLineAfter",
    "Shift-Ctrl-Enter": "insertLineBefore",
    "Ctrl-D": "selectNextOccurrence",
    "Shift-Ctrl-Space": "selectScope",
    "Shift-Ctrl-M": "selectBetweenBrackets",
    "Ctrl-M": "goToBracket",
    "Shift-Ctrl-Up": "swapLineUp",
    "Shift-Ctrl-Down": "swapLineDown",
    "Ctrl-/": "toggleCommentIndented",
    "Ctrl-J": "joinLines",
    "Shift-Ctrl-D": "duplicateLine",
    "F9": "sortLines",
    "Ctrl-F9": "sortLinesInsensitive",
    "F2": "nextBookmark",
    "Shift-F2": "prevBookmark",
    "Ctrl-F2": "toggleBookmark",
    "Shift-Ctrl-F2": "clearBookmarks",
    "Alt-F2": "selectBookmarks",
    "Backspace": "smartBackspace",
    "Ctrl-K Ctrl-K": "delLineRight",
    "Ctrl-K Ctrl-U": "upcaseAtCursor",
    "Ctrl-K Ctrl-L": "downcaseAtCursor",
    "Ctrl-K Ctrl-Space": "setSublimeMark",
    "Ctrl-K Ctrl-A": "selectToSublimeMark",
    "Ctrl-K Ctrl-W": "deleteToSublimeMark",
    "Ctrl-K Ctrl-X": "swapWithSublimeMark",
    "Ctrl-K Ctrl-Y": "sublimeYank",
    "Ctrl-K Ctrl-C": "showInCenter",
    "Ctrl-K Ctrl-G": "clearBookmarks",
    "Ctrl-K Ctrl-Backspace": "delLineLeft",
    "Ctrl-K Ctrl-0": "unfoldAll",
    "Ctrl-K Ctrl-J": "unfoldAll",
    "Ctrl-Alt-Up": "addCursorToPrevLine",
    "Ctrl-Alt-Down": "addCursorToNextLine",
    "Ctrl-F3": "findUnder",
    "Shift-Ctrl-F3": "findUnderPrevious",
    "Alt-F3": "findAllUnder",
    "Shift-Ctrl-[": "fold",
    "Shift-Ctrl-]": "unfold",
    "Ctrl-I": "findIncremental",
    "Shift-Ctrl-I": "findIncrementalReverse",
    "Ctrl-H": "replace",
    "F3": "findNext",
    "Shift-F3": "findPrev",
    "fallthrough": "pcDefault"
  };
  CodeMirror.normalizeKeyMap(keyMap.pcSublime);

  var mac = keyMap.default == keyMap.macDefault;
  keyMap.sublime = mac ? keyMap.macSublime : keyMap.pcSublime;
});


/***/ }),
/* 482 */,
/* 483 */
/*!***************************************************************!*\
  !*** ./node_modules/codemirror/mode/javascript/javascript.js ***!
  \***************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (true) // CommonJS
    mod(__webpack_require__(/*! ../../lib/codemirror */ 43));
  else {}
})(function(CodeMirror) {
"use strict";

CodeMirror.defineMode("javascript", function(config, parserConfig) {
  var indentUnit = config.indentUnit;
  var statementIndent = parserConfig.statementIndent;
  var jsonldMode = parserConfig.jsonld;
  var jsonMode = parserConfig.json || jsonldMode;
  var isTS = parserConfig.typescript;
  var wordRE = parserConfig.wordCharacters || /[\w$\xa1-\uffff]/;

  // Tokenizer

  var keywords = function(){
    function kw(type) {return {type: type, style: "keyword"};}
    var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c"), D = kw("keyword d");
    var operator = kw("operator"), atom = {type: "atom", style: "atom"};

    return {
      "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,
      "return": D, "break": D, "continue": D, "new": kw("new"), "delete": C, "void": C, "throw": C,
      "debugger": kw("debugger"), "var": kw("var"), "const": kw("var"), "let": kw("var"),
      "function": kw("function"), "catch": kw("catch"),
      "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),
      "in": operator, "typeof": operator, "instanceof": operator,
      "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom,
      "this": kw("this"), "class": kw("class"), "super": kw("atom"),
      "yield": C, "export": kw("export"), "import": kw("import"), "extends": C,
      "await": C
    };
  }();

  var isOperatorChar = /[+\-*&%=<>!?|~^@]/;
  var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)"/;

  function readRegexp(stream) {
    var escaped = false, next, inSet = false;
    while ((next = stream.next()) != null) {
      if (!escaped) {
        if (next == "/" && !inSet) return;
        if (next == "[") inSet = true;
        else if (inSet && next == "]") inSet = false;
      }
      escaped = !escaped && next == "\\";
    }
  }

  // Used as scratch variables to communicate multiple values without
  // consing up tons of objects.
  var type, content;
  function ret(tp, style, cont) {
    type = tp; content = cont;
    return style;
  }
  function tokenBase(stream, state) {
    var ch = stream.next();
    if (ch == '"' || ch == "'") {
      state.tokenize = tokenString(ch);
      return state.tokenize(stream, state);
    } else if (ch == "." && stream.match(/^\d+(?:[eE][+\-]?\d+)?/)) {
      return ret("number", "number");
    } else if (ch == "." && stream.match("..")) {
      return ret("spread", "meta");
    } else if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
      return ret(ch);
    } else if (ch == "=" && stream.eat(">")) {
      return ret("=>", "operator");
    } else if (ch == "0" && stream.match(/^(?:x[\da-f]+|o[0-7]+|b[01]+)n?/i)) {
      return ret("number", "number");
    } else if (/\d/.test(ch)) {
      stream.match(/^\d*(?:n|(?:\.\d*)?(?:[eE][+\-]?\d+)?)?/);
      return ret("number", "number");
    } else if (ch == "/") {
      if (stream.eat("*")) {
        state.tokenize = tokenComment;
        return tokenComment(stream, state);
      } else if (stream.eat("/")) {
        stream.skipToEnd();
        return ret("comment", "comment");
      } else if (expressionAllowed(stream, state, 1)) {
        readRegexp(stream);
        stream.match(/^\b(([gimyus])(?![gimyus]*\2))+\b/);
        return ret("regexp", "string-2");
      } else {
        stream.eat("=");
        return ret("operator", "operator", stream.current());
      }
    } else if (ch == "`") {
      state.tokenize = tokenQuasi;
      return tokenQuasi(stream, state);
    } else if (ch == "#") {
      stream.skipToEnd();
      return ret("error", "error");
    } else if (isOperatorChar.test(ch)) {
      if (ch != ">" || !state.lexical || state.lexical.type != ">") {
        if (stream.eat("=")) {
          if (ch == "!" || ch == "=") stream.eat("=")
        } else if (/[<>*+\-]/.test(ch)) {
          stream.eat(ch)
          if (ch == ">") stream.eat(ch)
        }
      }
      return ret("operator", "operator", stream.current());
    } else if (wordRE.test(ch)) {
      stream.eatWhile(wordRE);
      var word = stream.current()
      if (state.lastType != ".") {
        if (keywords.propertyIsEnumerable(word)) {
          var kw = keywords[word]
          return ret(kw.type, kw.style, word)
        }
        if (word == "async" && stream.match(/^(\s|\/\*.*?\*\/)*[\[\(\w]/, false))
          return ret("async", "keyword", word)
      }
      return ret("variable", "variable", word)
    }
  }

  function tokenString(quote) {
    return function(stream, state) {
      var escaped = false, next;
      if (jsonldMode && stream.peek() == "@" && stream.match(isJsonldKeyword)){
        state.tokenize = tokenBase;
        return ret("jsonld-keyword", "meta");
      }
      while ((next = stream.next()) != null) {
        if (next == quote && !escaped) break;
        escaped = !escaped && next == "\\";
      }
      if (!escaped) state.tokenize = tokenBase;
      return ret("string", "string");
    };
  }

  function tokenComment(stream, state) {
    var maybeEnd = false, ch;
    while (ch = stream.next()) {
      if (ch == "/" && maybeEnd) {
        state.tokenize = tokenBase;
        break;
      }
      maybeEnd = (ch == "*");
    }
    return ret("comment", "comment");
  }

  function tokenQuasi(stream, state) {
    var escaped = false, next;
    while ((next = stream.next()) != null) {
      if (!escaped && (next == "`" || next == "$" && stream.eat("{"))) {
        state.tokenize = tokenBase;
        break;
      }
      escaped = !escaped && next == "\\";
    }
    return ret("quasi", "string-2", stream.current());
  }

  var brackets = "([{}])";
  // This is a crude lookahead trick to try and notice that we're
  // parsing the argument patterns for a fat-arrow function before we
  // actually hit the arrow token. It only works if the arrow is on
  // the same line as the arguments and there's no strange noise
  // (comments) in between. Fallback is to only notice when we hit the
  // arrow, and not declare the arguments as locals for the arrow
  // body.
  function findFatArrow(stream, state) {
    if (state.fatArrowAt) state.fatArrowAt = null;
    var arrow = stream.string.indexOf("=>", stream.start);
    if (arrow < 0) return;

    if (isTS) { // Try to skip TypeScript return type declarations after the arguments
      var m = /:\s*(?:\w+(?:<[^>]*>|\[\])?|\{[^}]*\})\s*$/.exec(stream.string.slice(stream.start, arrow))
      if (m) arrow = m.index
    }

    var depth = 0, sawSomething = false;
    for (var pos = arrow - 1; pos >= 0; --pos) {
      var ch = stream.string.charAt(pos);
      var bracket = brackets.indexOf(ch);
      if (bracket >= 0 && bracket < 3) {
        if (!depth) { ++pos; break; }
        if (--depth == 0) { if (ch == "(") sawSomething = true; break; }
      } else if (bracket >= 3 && bracket < 6) {
        ++depth;
      } else if (wordRE.test(ch)) {
        sawSomething = true;
      } else if (/["'\/]/.test(ch)) {
        return;
      } else if (sawSomething && !depth) {
        ++pos;
        break;
      }
    }
    if (sawSomething && !depth) state.fatArrowAt = pos;
  }

  // Parser

  var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true, "jsonld-keyword": true};

  function JSLexical(indented, column, type, align, prev, info) {
    this.indented = indented;
    this.column = column;
    this.type = type;
    this.prev = prev;
    this.info = info;
    if (align != null) this.align = align;
  }

  function inScope(state, varname) {
    for (var v = state.localVars; v; v = v.next)
      if (v.name == varname) return true;
    for (var cx = state.context; cx; cx = cx.prev) {
      for (var v = cx.vars; v; v = v.next)
        if (v.name == varname) return true;
    }
  }

  function parseJS(state, style, type, content, stream) {
    var cc = state.cc;
    // Communicate our context to the combinators.
    // (Less wasteful than consing up a hundred closures on every call.)
    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style;

    if (!state.lexical.hasOwnProperty("align"))
      state.lexical.align = true;

    while(true) {
      var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;
      if (combinator(type, content)) {
        while(cc.length && cc[cc.length - 1].lex)
          cc.pop()();
        if (cx.marked) return cx.marked;
        if (type == "variable" && inScope(state, content)) return "variable-2";
        return style;
      }
    }
  }

  // Combinator utils

  var cx = {state: null, column: null, marked: null, cc: null};
  function pass() {
    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
  }
  function cont() {
    pass.apply(null, arguments);
    return true;
  }
  function inList(name, list) {
    for (var v = list; v; v = v.next) if (v.name == name) return true
    return false;
  }
  function register(varname) {
    var state = cx.state;
    cx.marked = "def";
    if (state.context) {
      if (state.lexical.info == "var" && state.context && state.context.block) {
        // FIXME function decls are also not block scoped
        var newContext = registerVarScoped(varname, state.context)
        if (newContext != null) {
          state.context = newContext
          return
        }
      } else if (!inList(varname, state.localVars)) {
        state.localVars = new Var(varname, state.localVars)
        return
      }
    }
    // Fall through means this is global
    if (parserConfig.globalVars && !inList(varname, state.globalVars))
      state.globalVars = new Var(varname, state.globalVars)
  }
  function registerVarScoped(varname, context) {
    if (!context) {
      return null
    } else if (context.block) {
      var inner = registerVarScoped(varname, context.prev)
      if (!inner) return null
      if (inner == context.prev) return context
      return new Context(inner, context.vars, true)
    } else if (inList(varname, context.vars)) {
      return context
    } else {
      return new Context(context.prev, new Var(varname, context.vars), false)
    }
  }

  function isModifier(name) {
    return name == "public" || name == "private" || name == "protected" || name == "abstract" || name == "readonly"
  }

  // Combinators

  function Context(prev, vars, block) { this.prev = prev; this.vars = vars; this.block = block }
  function Var(name, next) { this.name = name; this.next = next }

  var defaultVars = new Var("this", new Var("arguments", null))
  function pushcontext() {
    cx.state.context = new Context(cx.state.context, cx.state.localVars, false)
    cx.state.localVars = defaultVars
  }
  function pushblockcontext() {
    cx.state.context = new Context(cx.state.context, cx.state.localVars, true)
    cx.state.localVars = null
  }
  function popcontext() {
    cx.state.localVars = cx.state.context.vars
    cx.state.context = cx.state.context.prev
  }
  popcontext.lex = true
  function pushlex(type, info) {
    var result = function() {
      var state = cx.state, indent = state.indented;
      if (state.lexical.type == "stat") indent = state.lexical.indented;
      else for (var outer = state.lexical; outer && outer.type == ")" && outer.align; outer = outer.prev)
        indent = outer.indented;
      state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info);
    };
    result.lex = true;
    return result;
  }
  function poplex() {
    var state = cx.state;
    if (state.lexical.prev) {
      if (state.lexical.type == ")")
        state.indented = state.lexical.indented;
      state.lexical = state.lexical.prev;
    }
  }
  poplex.lex = true;

  function expect(wanted) {
    function exp(type) {
      if (type == wanted) return cont();
      else if (wanted == ";" || type == "}" || type == ")" || type == "]") return pass();
      else return cont(exp);
    };
    return exp;
  }

  function statement(type, value) {
    if (type == "var") return cont(pushlex("vardef", value), vardef, expect(";"), poplex);
    if (type == "keyword a") return cont(pushlex("form"), parenExpr, statement, poplex);
    if (type == "keyword b") return cont(pushlex("form"), statement, poplex);
    if (type == "keyword d") return cx.stream.match(/^\s*$/, false) ? cont() : cont(pushlex("stat"), maybeexpression, expect(";"), poplex);
    if (type == "debugger") return cont(expect(";"));
    if (type == "{") return cont(pushlex("}"), pushblockcontext, block, poplex, popcontext);
    if (type == ";") return cont();
    if (type == "if") {
      if (cx.state.lexical.info == "else" && cx.state.cc[cx.state.cc.length - 1] == poplex)
        cx.state.cc.pop()();
      return cont(pushlex("form"), parenExpr, statement, poplex, maybeelse);
    }
    if (type == "function") return cont(functiondef);
    if (type == "for") return cont(pushlex("form"), forspec, statement, poplex);
    if (type == "class" || (isTS && value == "interface")) {
      cx.marked = "keyword"
      return cont(pushlex("form", type == "class" ? type : value), className, poplex)
    }
    if (type == "variable") {
      if (isTS && value == "declare") {
        cx.marked = "keyword"
        return cont(statement)
      } else if (isTS && (value == "module" || value == "enum" || value == "type") && cx.stream.match(/^\s*\w/, false)) {
        cx.marked = "keyword"
        if (value == "enum") return cont(enumdef);
        else if (value == "type") return cont(typename, expect("operator"), typeexpr, expect(";"));
        else return cont(pushlex("form"), pattern, expect("{"), pushlex("}"), block, poplex, poplex)
      } else if (isTS && value == "namespace") {
        cx.marked = "keyword"
        return cont(pushlex("form"), expression, statement, poplex)
      } else if (isTS && value == "abstract") {
        cx.marked = "keyword"
        return cont(statement)
      } else {
        return cont(pushlex("stat"), maybelabel);
      }
    }
    if (type == "switch") return cont(pushlex("form"), parenExpr, expect("{"), pushlex("}", "switch"), pushblockcontext,
                                      block, poplex, poplex, popcontext);
    if (type == "case") return cont(expression, expect(":"));
    if (type == "default") return cont(expect(":"));
    if (type == "catch") return cont(pushlex("form"), pushcontext, maybeCatchBinding, statement, poplex, popcontext);
    if (type == "export") return cont(pushlex("stat"), afterExport, poplex);
    if (type == "import") return cont(pushlex("stat"), afterImport, poplex);
    if (type == "async") return cont(statement)
    if (value == "@") return cont(expression, statement)
    return pass(pushlex("stat"), expression, expect(";"), poplex);
  }
  function maybeCatchBinding(type) {
    if (type == "(") return cont(funarg, expect(")"))
  }
  function expression(type, value) {
    return expressionInner(type, value, false);
  }
  function expressionNoComma(type, value) {
    return expressionInner(type, value, true);
  }
  function parenExpr(type) {
    if (type != "(") return pass()
    return cont(pushlex(")"), expression, expect(")"), poplex)
  }
  function expressionInner(type, value, noComma) {
    if (cx.state.fatArrowAt == cx.stream.start) {
      var body = noComma ? arrowBodyNoComma : arrowBody;
      if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, expect("=>"), body, popcontext);
      else if (type == "variable") return pass(pushcontext, pattern, expect("=>"), body, popcontext);
    }

    var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;
    if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);
    if (type == "function") return cont(functiondef, maybeop);
    if (type == "class" || (isTS && value == "interface")) { cx.marked = "keyword"; return cont(pushlex("form"), classExpression, poplex); }
    if (type == "keyword c" || type == "async") return cont(noComma ? expressionNoComma : expression);
    if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);
    if (type == "operator" || type == "spread") return cont(noComma ? expressionNoComma : expression);
    if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop);
    if (type == "{") return contCommasep(objprop, "}", null, maybeop);
    if (type == "quasi") return pass(quasi, maybeop);
    if (type == "new") return cont(maybeTarget(noComma));
    if (type == "import") return cont(expression);
    return cont();
  }
  function maybeexpression(type) {
    if (type.match(/[;\}\)\],]/)) return pass();
    return pass(expression);
  }

  function maybeoperatorComma(type, value) {
    if (type == ",") return cont(expression);
    return maybeoperatorNoComma(type, value, false);
  }
  function maybeoperatorNoComma(type, value, noComma) {
    var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma;
    var expr = noComma == false ? expression : expressionNoComma;
    if (type == "=>") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext);
    if (type == "operator") {
      if (/\+\+|--/.test(value) || isTS && value == "!") return cont(me);
      if (isTS && value == "<" && cx.stream.match(/^([^>]|<.*?>)*>\s*\(/, false))
        return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, me);
      if (value == "?") return cont(expression, expect(":"), expr);
      return cont(expr);
    }
    if (type == "quasi") { return pass(quasi, me); }
    if (type == ";") return;
    if (type == "(") return contCommasep(expressionNoComma, ")", "call", me);
    if (type == ".") return cont(property, me);
    if (type == "[") return cont(pushlex("]"), maybeexpression, expect("]"), poplex, me);
    if (isTS && value == "as") { cx.marked = "keyword"; return cont(typeexpr, me) }
    if (type == "regexp") {
      cx.state.lastType = cx.marked = "operator"
      cx.stream.backUp(cx.stream.pos - cx.stream.start - 1)
      return cont(expr)
    }
  }
  function quasi(type, value) {
    if (type != "quasi") return pass();
    if (value.slice(value.length - 2) != "${") return cont(quasi);
    return cont(expression, continueQuasi);
  }
  function continueQuasi(type) {
    if (type == "}") {
      cx.marked = "string-2";
      cx.state.tokenize = tokenQuasi;
      return cont(quasi);
    }
  }
  function arrowBody(type) {
    findFatArrow(cx.stream, cx.state);
    return pass(type == "{" ? statement : expression);
  }
  function arrowBodyNoComma(type) {
    findFatArrow(cx.stream, cx.state);
    return pass(type == "{" ? statement : expressionNoComma);
  }
  function maybeTarget(noComma) {
    return function(type) {
      if (type == ".") return cont(noComma ? targetNoComma : target);
      else if (type == "variable" && isTS) return cont(maybeTypeArgs, noComma ? maybeoperatorNoComma : maybeoperatorComma)
      else return pass(noComma ? expressionNoComma : expression);
    };
  }
  function target(_, value) {
    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorComma); }
  }
  function targetNoComma(_, value) {
    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorNoComma); }
  }
  function maybelabel(type) {
    if (type == ":") return cont(poplex, statement);
    return pass(maybeoperatorComma, expect(";"), poplex);
  }
  function property(type) {
    if (type == "variable") {cx.marked = "property"; return cont();}
  }
  function objprop(type, value) {
    if (type == "async") {
      cx.marked = "property";
      return cont(objprop);
    } else if (type == "variable" || cx.style == "keyword") {
      cx.marked = "property";
      if (value == "get" || value == "set") return cont(getterSetter);
      var m // Work around fat-arrow-detection complication for detecting typescript typed arrow params
      if (isTS && cx.state.fatArrowAt == cx.stream.start && (m = cx.stream.match(/^\s*:\s*/, false)))
        cx.state.fatArrowAt = cx.stream.pos + m[0].length
      return cont(afterprop);
    } else if (type == "number" || type == "string") {
      cx.marked = jsonldMode ? "property" : (cx.style + " property");
      return cont(afterprop);
    } else if (type == "jsonld-keyword") {
      return cont(afterprop);
    } else if (isTS && isModifier(value)) {
      cx.marked = "keyword"
      return cont(objprop)
    } else if (type == "[") {
      return cont(expression, maybetype, expect("]"), afterprop);
    } else if (type == "spread") {
      return cont(expressionNoComma, afterprop);
    } else if (value == "*") {
      cx.marked = "keyword";
      return cont(objprop);
    } else if (type == ":") {
      return pass(afterprop)
    }
  }
  function getterSetter(type) {
    if (type != "variable") return pass(afterprop);
    cx.marked = "property";
    return cont(functiondef);
  }
  function afterprop(type) {
    if (type == ":") return cont(expressionNoComma);
    if (type == "(") return pass(functiondef);
  }
  function commasep(what, end, sep) {
    function proceed(type, value) {
      if (sep ? sep.indexOf(type) > -1 : type == ",") {
        var lex = cx.state.lexical;
        if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;
        return cont(function(type, value) {
          if (type == end || value == end) return pass()
          return pass(what)
        }, proceed);
      }
      if (type == end || value == end) return cont();
      if (sep && sep.indexOf(";") > -1) return pass(what)
      return cont(expect(end));
    }
    return function(type, value) {
      if (type == end || value == end) return cont();
      return pass(what, proceed);
    };
  }
  function contCommasep(what, end, info) {
    for (var i = 3; i < arguments.length; i++)
      cx.cc.push(arguments[i]);
    return cont(pushlex(end, info), commasep(what, end), poplex);
  }
  function block(type) {
    if (type == "}") return cont();
    return pass(statement, block);
  }
  function maybetype(type, value) {
    if (isTS) {
      if (type == ":" || value == "in") return cont(typeexpr);
      if (value == "?") return cont(maybetype);
    }
  }
  function mayberettype(type) {
    if (isTS && type == ":") {
      if (cx.stream.match(/^\s*\w+\s+is\b/, false)) return cont(expression, isKW, typeexpr)
      else return cont(typeexpr)
    }
  }
  function isKW(_, value) {
    if (value == "is") {
      cx.marked = "keyword"
      return cont()
    }
  }
  function typeexpr(type, value) {
    if (value == "keyof" || value == "typeof" || value == "infer") {
      cx.marked = "keyword"
      return cont(value == "typeof" ? expressionNoComma : typeexpr)
    }
    if (type == "variable" || value == "void") {
      cx.marked = "type"
      return cont(afterType)
    }
    if (type == "string" || type == "number" || type == "atom") return cont(afterType);
    if (type == "[") return cont(pushlex("]"), commasep(typeexpr, "]", ","), poplex, afterType)
    if (type == "{") return cont(pushlex("}"), commasep(typeprop, "}", ",;"), poplex, afterType)
    if (type == "(") return cont(commasep(typearg, ")"), maybeReturnType, afterType)
    if (type == "<") return cont(commasep(typeexpr, ">"), typeexpr)
  }
  function maybeReturnType(type) {
    if (type == "=>") return cont(typeexpr)
  }
  function typeprop(type, value) {
    if (type == "variable" || cx.style == "keyword") {
      cx.marked = "property"
      return cont(typeprop)
    } else if (value == "?" || type == "number" || type == "string") {
      return cont(typeprop)
    } else if (type == ":") {
      return cont(typeexpr)
    } else if (type == "[") {
      return cont(expect("variable"), maybetype, expect("]"), typeprop)
    } else if (type == "(") {
      return pass(functiondecl, typeprop)
    }
  }
  function typearg(type, value) {
    if (type == "variable" && cx.stream.match(/^\s*[?:]/, false) || value == "?") return cont(typearg)
    if (type == ":") return cont(typeexpr)
    if (type == "spread") return cont(typearg)
    return pass(typeexpr)
  }
  function afterType(type, value) {
    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)
    if (value == "|" || type == "." || value == "&") return cont(typeexpr)
    if (type == "[") return cont(typeexpr, expect("]"), afterType)
    if (value == "extends" || value == "implements") { cx.marked = "keyword"; return cont(typeexpr) }
    if (value == "?") return cont(typeexpr, expect(":"), typeexpr)
  }
  function maybeTypeArgs(_, value) {
    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)
  }
  function typeparam() {
    return pass(typeexpr, maybeTypeDefault)
  }
  function maybeTypeDefault(_, value) {
    if (value == "=") return cont(typeexpr)
  }
  function vardef(_, value) {
    if (value == "enum") {cx.marked = "keyword"; return cont(enumdef)}
    return pass(pattern, maybetype, maybeAssign, vardefCont);
  }
  function pattern(type, value) {
    if (isTS && isModifier(value)) { cx.marked = "keyword"; return cont(pattern) }
    if (type == "variable") { register(value); return cont(); }
    if (type == "spread") return cont(pattern);
    if (type == "[") return contCommasep(eltpattern, "]");
    if (type == "{") return contCommasep(proppattern, "}");
  }
  function proppattern(type, value) {
    if (type == "variable" && !cx.stream.match(/^\s*:/, false)) {
      register(value);
      return cont(maybeAssign);
    }
    if (type == "variable") cx.marked = "property";
    if (type == "spread") return cont(pattern);
    if (type == "}") return pass();
    if (type == "[") return cont(expression, expect(']'), expect(':'), proppattern);
    return cont(expect(":"), pattern, maybeAssign);
  }
  function eltpattern() {
    return pass(pattern, maybeAssign)
  }
  function maybeAssign(_type, value) {
    if (value == "=") return cont(expressionNoComma);
  }
  function vardefCont(type) {
    if (type == ",") return cont(vardef);
  }
  function maybeelse(type, value) {
    if (type == "keyword b" && value == "else") return cont(pushlex("form", "else"), statement, poplex);
  }
  function forspec(type, value) {
    if (value == "await") return cont(forspec);
    if (type == "(") return cont(pushlex(")"), forspec1, expect(")"), poplex);
  }
  function forspec1(type) {
    if (type == "var") return cont(vardef, expect(";"), forspec2);
    if (type == ";") return cont(forspec2);
    if (type == "variable") return cont(formaybeinof);
    return pass(expression, expect(";"), forspec2);
  }
  function formaybeinof(_type, value) {
    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); }
    return cont(maybeoperatorComma, forspec2);
  }
  function forspec2(type, value) {
    if (type == ";") return cont(forspec3);
    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); }
    return pass(expression, expect(";"), forspec3);
  }
  function forspec3(type) {
    if (type != ")") cont(expression);
  }
  function functiondef(type, value) {
    if (value == "*") {cx.marked = "keyword"; return cont(functiondef);}
    if (type == "variable") {register(value); return cont(functiondef);}
    if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, mayberettype, statement, popcontext);
    if (isTS && value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, functiondef)
  }
  function functiondecl(type, value) {
    if (value == "*") {cx.marked = "keyword"; return cont(functiondecl);}
    if (type == "variable") {register(value); return cont(functiondecl);}
    if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, mayberettype, popcontext);
    if (isTS && value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, functiondecl)
  }
  function typename(type, value) {
    if (type == "keyword" || type == "variable") {
      cx.marked = "type"
      return cont(typename)
    } else if (value == "<") {
      return cont(pushlex(">"), commasep(typeparam, ">"), poplex)
    }
  }
  function funarg(type, value) {
    if (value == "@") cont(expression, funarg)
    if (type == "spread") return cont(funarg);
    if (isTS && isModifier(value)) { cx.marked = "keyword"; return cont(funarg); }
    return pass(pattern, maybetype, maybeAssign);
  }
  function classExpression(type, value) {
    // Class expressions may have an optional name.
    if (type == "variable") return className(type, value);
    return classNameAfter(type, value);
  }
  function className(type, value) {
    if (type == "variable") {register(value); return cont(classNameAfter);}
  }
  function classNameAfter(type, value) {
    if (value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, classNameAfter)
    if (value == "extends" || value == "implements" || (isTS && type == ",")) {
      if (value == "implements") cx.marked = "keyword";
      return cont(isTS ? typeexpr : expression, classNameAfter);
    }
    if (type == "{") return cont(pushlex("}"), classBody, poplex);
  }
  function classBody(type, value) {
    if (type == "async" ||
        (type == "variable" &&
         (value == "static" || value == "get" || value == "set" || (isTS && isModifier(value))) &&
         cx.stream.match(/^\s+[\w$\xa1-\uffff]/, false))) {
      cx.marked = "keyword";
      return cont(classBody);
    }
    if (type == "variable" || cx.style == "keyword") {
      cx.marked = "property";
      return cont(isTS ? classfield : functiondef, classBody);
    }
    if (type == "number" || type == "string") return cont(isTS ? classfield : functiondef, classBody);
    if (type == "[")
      return cont(expression, maybetype, expect("]"), isTS ? classfield : functiondef, classBody)
    if (value == "*") {
      cx.marked = "keyword";
      return cont(classBody);
    }
    if (isTS && type == "(") return pass(functiondecl, classBody)
    if (type == ";" || type == ",") return cont(classBody);
    if (type == "}") return cont();
    if (value == "@") return cont(expression, classBody)
  }
  function classfield(type, value) {
    if (value == "?") return cont(classfield)
    if (type == ":") return cont(typeexpr, maybeAssign)
    if (value == "=") return cont(expressionNoComma)
    var context = cx.state.lexical.prev, isInterface = context && context.info == "interface"
    return pass(isInterface ? functiondecl : functiondef)
  }
  function afterExport(type, value) {
    if (value == "*") { cx.marked = "keyword"; return cont(maybeFrom, expect(";")); }
    if (value == "default") { cx.marked = "keyword"; return cont(expression, expect(";")); }
    if (type == "{") return cont(commasep(exportField, "}"), maybeFrom, expect(";"));
    return pass(statement);
  }
  function exportField(type, value) {
    if (value == "as") { cx.marked = "keyword"; return cont(expect("variable")); }
    if (type == "variable") return pass(expressionNoComma, exportField);
  }
  function afterImport(type) {
    if (type == "string") return cont();
    if (type == "(") return pass(expression);
    return pass(importSpec, maybeMoreImports, maybeFrom);
  }
  function importSpec(type, value) {
    if (type == "{") return contCommasep(importSpec, "}");
    if (type == "variable") register(value);
    if (value == "*") cx.marked = "keyword";
    return cont(maybeAs);
  }
  function maybeMoreImports(type) {
    if (type == ",") return cont(importSpec, maybeMoreImports)
  }
  function maybeAs(_type, value) {
    if (value == "as") { cx.marked = "keyword"; return cont(importSpec); }
  }
  function maybeFrom(_type, value) {
    if (value == "from") { cx.marked = "keyword"; return cont(expression); }
  }
  function arrayLiteral(type) {
    if (type == "]") return cont();
    return pass(commasep(expressionNoComma, "]"));
  }
  function enumdef() {
    return pass(pushlex("form"), pattern, expect("{"), pushlex("}"), commasep(enummember, "}"), poplex, poplex)
  }
  function enummember() {
    return pass(pattern, maybeAssign);
  }

  function isContinuedStatement(state, textAfter) {
    return state.lastType == "operator" || state.lastType == "," ||
      isOperatorChar.test(textAfter.charAt(0)) ||
      /[,.]/.test(textAfter.charAt(0));
  }

  function expressionAllowed(stream, state, backUp) {
    return state.tokenize == tokenBase &&
      /^(?:operator|sof|keyword [bcd]|case|new|export|default|spread|[\[{}\(,;:]|=>)$/.test(state.lastType) ||
      (state.lastType == "quasi" && /\{\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0))))
  }

  // Interface

  return {
    startState: function(basecolumn) {
      var state = {
        tokenize: tokenBase,
        lastType: "sof",
        cc: [],
        lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
        localVars: parserConfig.localVars,
        context: parserConfig.localVars && new Context(null, null, false),
        indented: basecolumn || 0
      };
      if (parserConfig.globalVars && typeof parserConfig.globalVars == "object")
        state.globalVars = parserConfig.globalVars;
      return state;
    },

    token: function(stream, state) {
      if (stream.sol()) {
        if (!state.lexical.hasOwnProperty("align"))
          state.lexical.align = false;
        state.indented = stream.indentation();
        findFatArrow(stream, state);
      }
      if (state.tokenize != tokenComment && stream.eatSpace()) return null;
      var style = state.tokenize(stream, state);
      if (type == "comment") return style;
      state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type;
      return parseJS(state, style, type, content, stream);
    },

    indent: function(state, textAfter) {
      if (state.tokenize == tokenComment) return CodeMirror.Pass;
      if (state.tokenize != tokenBase) return 0;
      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top
      // Kludge to prevent 'maybelse' from blocking lexical scope pops
      if (!/^\s*else\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) {
        var c = state.cc[i];
        if (c == poplex) lexical = lexical.prev;
        else if (c != maybeelse) break;
      }
      while ((lexical.type == "stat" || lexical.type == "form") &&
             (firstChar == "}" || ((top = state.cc[state.cc.length - 1]) &&
                                   (top == maybeoperatorComma || top == maybeoperatorNoComma) &&
                                   !/^[,\.=+\-*:?[\(]/.test(textAfter))))
        lexical = lexical.prev;
      if (statementIndent && lexical.type == ")" && lexical.prev.type == "stat")
        lexical = lexical.prev;
      var type = lexical.type, closing = firstChar == type;

      if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? lexical.info.length + 1 : 0);
      else if (type == "form" && firstChar == "{") return lexical.indented;
      else if (type == "form") return lexical.indented + indentUnit;
      else if (type == "stat")
        return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);
      else if (lexical.info == "switch" && !closing && parserConfig.doubleIndentSwitch != false)
        return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
      else if (lexical.align) return lexical.column + (closing ? 0 : 1);
      else return lexical.indented + (closing ? 0 : indentUnit);
    },

    electricInput: /^\s*(?:case .*?:|default:|\{|\})$/,
    blockCommentStart: jsonMode ? null : "/*",
    blockCommentEnd: jsonMode ? null : "*/",
    blockCommentContinue: jsonMode ? null : " * ",
    lineComment: jsonMode ? null : "//",
    fold: "brace",
    closeBrackets: "()[]{}''\"\"``",

    helperType: jsonMode ? "json" : "javascript",
    jsonldMode: jsonldMode,
    jsonMode: jsonMode,

    expressionAllowed: expressionAllowed,

    skipExpression: function(state) {
      var top = state.cc[state.cc.length - 1]
      if (top == expression || top == expressionNoComma) state.cc.pop()
    }
  };
});

CodeMirror.registerHelper("wordChars", "javascript", /[\w$]/);

CodeMirror.defineMIME("text/javascript", "javascript");
CodeMirror.defineMIME("text/ecmascript", "javascript");
CodeMirror.defineMIME("application/javascript", "javascript");
CodeMirror.defineMIME("application/x-javascript", "javascript");
CodeMirror.defineMIME("application/ecmascript", "javascript");
CodeMirror.defineMIME("application/json", {name: "javascript", json: true});
CodeMirror.defineMIME("application/x-json", {name: "javascript", json: true});
CodeMirror.defineMIME("application/ld+json", {name: "javascript", jsonld: true});
CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true });
CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });

});


/***/ }),
/* 484 */,
/* 485 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/zenburn.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 486 */,
/* 487 */
/*!************************************************!*\
  !*** ./node_modules/codemirror/theme/yeti.css ***!
  \************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 488 */,
/* 489 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/xq-light.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 490 */,
/* 491 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/xq-dark.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 492 */,
/* 493 */
/*!*******************************************************!*\
  !*** ./node_modules/codemirror/theme/vibrant-ink.css ***!
  \*******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 494 */,
/* 495 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/twilight.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 496 */,
/* 497 */
/*!************************************************!*\
  !*** ./node_modules/codemirror/theme/ttcn.css ***!
  \************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 498 */,
/* 499 */
/*!*******************************************************************!*\
  !*** ./node_modules/codemirror/theme/tomorrow-night-eighties.css ***!
  \*******************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 500 */,
/* 501 */
/*!*****************************************************************!*\
  !*** ./node_modules/codemirror/theme/tomorrow-night-bright.css ***!
  \*****************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 502 */,
/* 503 */
/*!******************************************************!*\
  !*** ./node_modules/codemirror/theme/the-matrix.css ***!
  \******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 504 */,
/* 505 */
/*!************************************************!*\
  !*** ./node_modules/codemirror/theme/ssms.css ***!
  \************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 506 */,
/* 507 */
/*!*****************************************************!*\
  !*** ./node_modules/codemirror/theme/solarized.css ***!
  \*****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 508 */,
/* 509 */
/*!*****************************************************!*\
  !*** ./node_modules/codemirror/theme/shadowfox.css ***!
  \*****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 510 */,
/* 511 */
/*!************************************************!*\
  !*** ./node_modules/codemirror/theme/seti.css ***!
  \************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 512 */,
/* 513 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/rubyblue.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 514 */,
/* 515 */
/*!******************************************************!*\
  !*** ./node_modules/codemirror/theme/railscasts.css ***!
  \******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 516 */,
/* 517 */
/*!**********************************************************!*\
  !*** ./node_modules/codemirror/theme/pastel-on-dark.css ***!
  \**********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 518 */,
/* 519 */
/*!*********************************************************!*\
  !*** ./node_modules/codemirror/theme/paraiso-light.css ***!
  \*********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 520 */,
/* 521 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/theme/paraiso-dark.css ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 522 */,
/* 523 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/theme/panda-syntax.css ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 524 */,
/* 525 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/theme/oceanic-next.css ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 526 */,
/* 527 */
/*!*************************************************!*\
  !*** ./node_modules/codemirror/theme/night.css ***!
  \*************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 528 */,
/* 529 */
/*!***********************************************!*\
  !*** ./node_modules/codemirror/theme/neo.css ***!
  \***********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 530 */,
/* 531 */
/*!************************************************!*\
  !*** ./node_modules/codemirror/theme/neat.css ***!
  \************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 532 */,
/* 533 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/midnight.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 534 */,
/* 535 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/mdn-like.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 536 */,
/* 537 */
/*!***********************************************!*\
  !*** ./node_modules/codemirror/theme/mbo.css ***!
  \***********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 538 */,
/* 539 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/material.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 540 */,
/* 541 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/lucario.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 542 */,
/* 543 */
/*!*****************************************************!*\
  !*** ./node_modules/codemirror/theme/liquibyte.css ***!
  \*****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 544 */,
/* 545 */
/*!*******************************************************!*\
  !*** ./node_modules/codemirror/theme/lesser-dark.css ***!
  \*******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 546 */,
/* 547 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/isotope.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 548 */,
/* 549 */
/*!************************************************!*\
  !*** ./node_modules/codemirror/theme/idea.css ***!
  \************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 550 */,
/* 551 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/icecoder.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 552 */,
/* 553 */
/*!*****************************************************!*\
  !*** ./node_modules/codemirror/theme/hopscotch.css ***!
  \*****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 554 */,
/* 555 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/theme/gruvbox-dark.css ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 556 */,
/* 557 */
/*!*******************************************************!*\
  !*** ./node_modules/codemirror/theme/erlang-dark.css ***!
  \*******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 558 */,
/* 559 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/elegant.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 560 */,
/* 561 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/eclipse.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 562 */,
/* 563 */
/*!*********************************************************!*\
  !*** ./node_modules/codemirror/theme/duotone-light.css ***!
  \*********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 564 */,
/* 565 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/theme/duotone-dark.css ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 566 */,
/* 567 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/dracula.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 568 */,
/* 569 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/darcula.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 570 */,
/* 571 */
/*!******************************************************!*\
  !*** ./node_modules/codemirror/theme/colorforth.css ***!
  \******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 572 */,
/* 573 */
/*!**************************************************!*\
  !*** ./node_modules/codemirror/theme/cobalt.css ***!
  \**************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 574 */,
/* 575 */
/*!******************************************************!*\
  !*** ./node_modules/codemirror/theme/blackboard.css ***!
  \******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 576 */,
/* 577 */
/*!**************************************************!*\
  !*** ./node_modules/codemirror/theme/bespin.css ***!
  \**************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 578 */,
/* 579 */
/*!********************************************************!*\
  !*** ./node_modules/codemirror/theme/base16-light.css ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 580 */,
/* 581 */
/*!*******************************************************!*\
  !*** ./node_modules/codemirror/theme/base16-dark.css ***!
  \*******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 582 */,
/* 583 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/ambiance.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 584 */,
/* 585 */
/*!***********************************************************!*\
  !*** ./node_modules/codemirror/theme/ambiance-mobile.css ***!
  \***********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 586 */,
/* 587 */
/*!**************************************************!*\
  !*** ./node_modules/codemirror/theme/abcdef.css ***!
  \**************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 588 */,
/* 589 */
/*!******************************************************!*\
  !*** ./node_modules/codemirror/theme/3024-night.css ***!
  \******************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 590 */,
/* 591 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/theme/3024-day.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 592 */,
/* 593 */
/*!***************************************************!*\
  !*** ./node_modules/codemirror/theme/monokai.css ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 594 */,
/* 595 */
/*!****************************************************!*\
  !*** ./node_modules/codemirror/lib/codemirror.css ***!
  \****************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),
/* 596 */
/*!**************************************************!*\
  !*** ./node_modules/brace/ext/language_tools.js ***!
  \**************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/snippets",["require","exports","module","ace/lib/oop","ace/lib/event_emitter","ace/lib/lang","ace/range","ace/anchor","ace/keyboard/hash_handler","ace/tokenizer","ace/lib/dom","ace/editor"], function(acequire, exports, module) {
"use strict";
var oop = acequire("./lib/oop");
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var lang = acequire("./lib/lang");
var Range = acequire("./range").Range;
var Anchor = acequire("./anchor").Anchor;
var HashHandler = acequire("./keyboard/hash_handler").HashHandler;
var Tokenizer = acequire("./tokenizer").Tokenizer;
var comparePoints = Range.comparePoints;

var SnippetManager = function() {
    this.snippetMap = {};
    this.snippetNameMap = {};
};

(function() {
    oop.implement(this, EventEmitter);
    
    this.getTokenizer = function() {
        function TabstopToken(str, _, stack) {
            str = str.substr(1);
            if (/^\d+$/.test(str) && !stack.inFormatString)
                return [{tabstopId: parseInt(str, 10)}];
            return [{text: str}];
        }
        function escape(ch) {
            return "(?:[^\\\\" + ch + "]|\\\\.)";
        }
        SnippetManager.$tokenizer = new Tokenizer({
            start: [
                {regex: /:/, onMatch: function(val, state, stack) {
                    if (stack.length && stack[0].expectIf) {
                        stack[0].expectIf = false;
                        stack[0].elseBranch = stack[0];
                        return [stack[0]];
                    }
                    return ":";
                }},
                {regex: /\\./, onMatch: function(val, state, stack) {
                    var ch = val[1];
                    if (ch == "}" && stack.length) {
                        val = ch;
                    }else if ("`$\\".indexOf(ch) != -1) {
                        val = ch;
                    } else if (stack.inFormatString) {
                        if (ch == "n")
                            val = "\n";
                        else if (ch == "t")
                            val = "\n";
                        else if ("ulULE".indexOf(ch) != -1) {
                            val = {changeCase: ch, local: ch > "a"};
                        }
                    }

                    return [val];
                }},
                {regex: /}/, onMatch: function(val, state, stack) {
                    return [stack.length ? stack.shift() : val];
                }},
                {regex: /\$(?:\d+|\w+)/, onMatch: TabstopToken},
                {regex: /\$\{[\dA-Z_a-z]+/, onMatch: function(str, state, stack) {
                    var t = TabstopToken(str.substr(1), state, stack);
                    stack.unshift(t[0]);
                    return t;
                }, next: "snippetVar"},
                {regex: /\n/, token: "newline", merge: false}
            ],
            snippetVar: [
                {regex: "\\|" + escape("\\|") + "*\\|", onMatch: function(val, state, stack) {
                    stack[0].choices = val.slice(1, -1).split(",");
                }, next: "start"},
                {regex: "/(" + escape("/") + "+)/(?:(" + escape("/") + "*)/)(\\w*):?",
                 onMatch: function(val, state, stack) {
                    var ts = stack[0];
                    ts.fmtString = val;

                    val = this.splitRegex.exec(val);
                    ts.guard = val[1];
                    ts.fmt = val[2];
                    ts.flag = val[3];
                    return "";
                }, next: "start"},
                {regex: "`" + escape("`") + "*`", onMatch: function(val, state, stack) {
                    stack[0].code = val.splice(1, -1);
                    return "";
                }, next: "start"},
                {regex: "\\?", onMatch: function(val, state, stack) {
                    if (stack[0])
                        stack[0].expectIf = true;
                }, next: "start"},
                {regex: "([^:}\\\\]|\\\\.)*:?", token: "", next: "start"}
            ],
            formatString: [
                {regex: "/(" + escape("/") + "+)/", token: "regex"},
                {regex: "", onMatch: function(val, state, stack) {
                    stack.inFormatString = true;
                }, next: "start"}
            ]
        });
        SnippetManager.prototype.getTokenizer = function() {
            return SnippetManager.$tokenizer;
        };
        return SnippetManager.$tokenizer;
    };

    this.tokenizeTmSnippet = function(str, startState) {
        return this.getTokenizer().getLineTokens(str, startState).tokens.map(function(x) {
            return x.value || x;
        });
    };

    this.$getDefaultValue = function(editor, name) {
        if (/^[A-Z]\d+$/.test(name)) {
            var i = name.substr(1);
            return (this.variables[name[0] + "__"] || {})[i];
        }
        if (/^\d+$/.test(name)) {
            return (this.variables.__ || {})[name];
        }
        name = name.replace(/^TM_/, "");

        if (!editor)
            return;
        var s = editor.session;
        switch(name) {
            case "CURRENT_WORD":
                var r = s.getWordRange();
            case "SELECTION":
            case "SELECTED_TEXT":
                return s.getTextRange(r);
            case "CURRENT_LINE":
                return s.getLine(editor.getCursorPosition().row);
            case "PREV_LINE": // not possible in textmate
                return s.getLine(editor.getCursorPosition().row - 1);
            case "LINE_INDEX":
                return editor.getCursorPosition().column;
            case "LINE_NUMBER":
                return editor.getCursorPosition().row + 1;
            case "SOFT_TABS":
                return s.getUseSoftTabs() ? "YES" : "NO";
            case "TAB_SIZE":
                return s.getTabSize();
            case "FILENAME":
            case "FILEPATH":
                return "";
            case "FULLNAME":
                return "Ace";
        }
    };
    this.variables = {};
    this.getVariableValue = function(editor, varName) {
        if (this.variables.hasOwnProperty(varName))
            return this.variables[varName](editor, varName) || "";
        return this.$getDefaultValue(editor, varName) || "";
    };
    this.tmStrFormat = function(str, ch, editor) {
        var flag = ch.flag || "";
        var re = ch.guard;
        re = new RegExp(re, flag.replace(/[^gi]/, ""));
        var fmtTokens = this.tokenizeTmSnippet(ch.fmt, "formatString");
        var _self = this;
        var formatted = str.replace(re, function() {
            _self.variables.__ = arguments;
            var fmtParts = _self.resolveVariables(fmtTokens, editor);
            var gChangeCase = "E";
            for (var i  = 0; i < fmtParts.length; i++) {
                var ch = fmtParts[i];
                if (typeof ch == "object") {
                    fmtParts[i] = "";
                    if (ch.changeCase && ch.local) {
                        var next = fmtParts[i + 1];
                        if (next && typeof next == "string") {
                            if (ch.changeCase == "u")
                                fmtParts[i] = next[0].toUpperCase();
                            else
                                fmtParts[i] = next[0].toLowerCase();
                            fmtParts[i + 1] = next.substr(1);
                        }
                    } else if (ch.changeCase) {
                        gChangeCase = ch.changeCase;
                    }
                } else if (gChangeCase == "U") {
                    fmtParts[i] = ch.toUpperCase();
                } else if (gChangeCase == "L") {
                    fmtParts[i] = ch.toLowerCase();
                }
            }
            return fmtParts.join("");
        });
        this.variables.__ = null;
        return formatted;
    };

    this.resolveVariables = function(snippet, editor) {
        var result = [];
        for (var i = 0; i < snippet.length; i++) {
            var ch = snippet[i];
            if (typeof ch == "string") {
                result.push(ch);
            } else if (typeof ch != "object") {
                continue;
            } else if (ch.skip) {
                gotoNext(ch);
            } else if (ch.processed < i) {
                continue;
            } else if (ch.text) {
                var value = this.getVariableValue(editor, ch.text);
                if (value && ch.fmtString)
                    value = this.tmStrFormat(value, ch);
                ch.processed = i;
                if (ch.expectIf == null) {
                    if (value) {
                        result.push(value);
                        gotoNext(ch);
                    }
                } else {
                    if (value) {
                        ch.skip = ch.elseBranch;
                    } else
                        gotoNext(ch);
                }
            } else if (ch.tabstopId != null) {
                result.push(ch);
            } else if (ch.changeCase != null) {
                result.push(ch);
            }
        }
        function gotoNext(ch) {
            var i1 = snippet.indexOf(ch, i + 1);
            if (i1 != -1)
                i = i1;
        }
        return result;
    };

    this.insertSnippetForSelection = function(editor, snippetText) {
        var cursor = editor.getCursorPosition();
        var line = editor.session.getLine(cursor.row);
        var tabString = editor.session.getTabString();
        var indentString = line.match(/^\s*/)[0];
        
        if (cursor.column < indentString.length)
            indentString = indentString.slice(0, cursor.column);

        snippetText = snippetText.replace(/\r/g, "");
        var tokens = this.tokenizeTmSnippet(snippetText);
        tokens = this.resolveVariables(tokens, editor);
        tokens = tokens.map(function(x) {
            if (x == "\n")
                return x + indentString;
            if (typeof x == "string")
                return x.replace(/\t/g, tabString);
            return x;
        });
        var tabstops = [];
        tokens.forEach(function(p, i) {
            if (typeof p != "object")
                return;
            var id = p.tabstopId;
            var ts = tabstops[id];
            if (!ts) {
                ts = tabstops[id] = [];
                ts.index = id;
                ts.value = "";
            }
            if (ts.indexOf(p) !== -1)
                return;
            ts.push(p);
            var i1 = tokens.indexOf(p, i + 1);
            if (i1 === -1)
                return;

            var value = tokens.slice(i + 1, i1);
            var isNested = value.some(function(t) {return typeof t === "object";});
            if (isNested && !ts.value) {
                ts.value = value;
            } else if (value.length && (!ts.value || typeof ts.value !== "string")) {
                ts.value = value.join("");
            }
        });
        tabstops.forEach(function(ts) {ts.length = 0;});
        var expanding = {};
        function copyValue(val) {
            var copy = [];
            for (var i = 0; i < val.length; i++) {
                var p = val[i];
                if (typeof p == "object") {
                    if (expanding[p.tabstopId])
                        continue;
                    var j = val.lastIndexOf(p, i - 1);
                    p = copy[j] || {tabstopId: p.tabstopId};
                }
                copy[i] = p;
            }
            return copy;
        }
        for (var i = 0; i < tokens.length; i++) {
            var p = tokens[i];
            if (typeof p != "object")
                continue;
            var id = p.tabstopId;
            var i1 = tokens.indexOf(p, i + 1);
            if (expanding[id]) {
                if (expanding[id] === p)
                    expanding[id] = null;
                continue;
            }
            
            var ts = tabstops[id];
            var arg = typeof ts.value == "string" ? [ts.value] : copyValue(ts.value);
            arg.unshift(i + 1, Math.max(0, i1 - i));
            arg.push(p);
            expanding[id] = p;
            tokens.splice.apply(tokens, arg);

            if (ts.indexOf(p) === -1)
                ts.push(p);
        }
        var row = 0, column = 0;
        var text = "";
        tokens.forEach(function(t) {
            if (typeof t === "string") {
                var lines = t.split("\n");
                if (lines.length > 1){
                    column = lines[lines.length - 1].length;
                    row += lines.length - 1;
                } else
                    column += t.length;
                text += t;
            } else {
                if (!t.start)
                    t.start = {row: row, column: column};
                else
                    t.end = {row: row, column: column};
            }
        });
        var range = editor.getSelectionRange();
        var end = editor.session.replace(range, text);

        var tabstopManager = new TabstopManager(editor);
        var selectionId = editor.inVirtualSelectionMode && editor.selection.index;
        tabstopManager.addTabstops(tabstops, range.start, end, selectionId);
    };
    
    this.insertSnippet = function(editor, snippetText) {
        var self = this;
        if (editor.inVirtualSelectionMode)
            return self.insertSnippetForSelection(editor, snippetText);
        
        editor.forEachSelection(function() {
            self.insertSnippetForSelection(editor, snippetText);
        }, null, {keepOrder: true});
        
        if (editor.tabstopManager)
            editor.tabstopManager.tabNext();
    };

    this.$getScope = function(editor) {
        var scope = editor.session.$mode.$id || "";
        scope = scope.split("/").pop();
        if (scope === "html" || scope === "php") {
            if (scope === "php" && !editor.session.$mode.inlinePhp) 
                scope = "html";
            var c = editor.getCursorPosition();
            var state = editor.session.getState(c.row);
            if (typeof state === "object") {
                state = state[0];
            }
            if (state.substring) {
                if (state.substring(0, 3) == "js-")
                    scope = "javascript";
                else if (state.substring(0, 4) == "css-")
                    scope = "css";
                else if (state.substring(0, 4) == "php-")
                    scope = "php";
            }
        }
        
        return scope;
    };

    this.getActiveScopes = function(editor) {
        var scope = this.$getScope(editor);
        var scopes = [scope];
        var snippetMap = this.snippetMap;
        if (snippetMap[scope] && snippetMap[scope].includeScopes) {
            scopes.push.apply(scopes, snippetMap[scope].includeScopes);
        }
        scopes.push("_");
        return scopes;
    };

    this.expandWithTab = function(editor, options) {
        var self = this;
        var result = editor.forEachSelection(function() {
            return self.expandSnippetForSelection(editor, options);
        }, null, {keepOrder: true});
        if (result && editor.tabstopManager)
            editor.tabstopManager.tabNext();
        return result;
    };
    
    this.expandSnippetForSelection = function(editor, options) {
        var cursor = editor.getCursorPosition();
        var line = editor.session.getLine(cursor.row);
        var before = line.substring(0, cursor.column);
        var after = line.substr(cursor.column);

        var snippetMap = this.snippetMap;
        var snippet;
        this.getActiveScopes(editor).some(function(scope) {
            var snippets = snippetMap[scope];
            if (snippets)
                snippet = this.findMatchingSnippet(snippets, before, after);
            return !!snippet;
        }, this);
        if (!snippet)
            return false;
        if (options && options.dryRun)
            return true;
        editor.session.doc.removeInLine(cursor.row,
            cursor.column - snippet.replaceBefore.length,
            cursor.column + snippet.replaceAfter.length
        );

        this.variables.M__ = snippet.matchBefore;
        this.variables.T__ = snippet.matchAfter;
        this.insertSnippetForSelection(editor, snippet.content);

        this.variables.M__ = this.variables.T__ = null;
        return true;
    };

    this.findMatchingSnippet = function(snippetList, before, after) {
        for (var i = snippetList.length; i--;) {
            var s = snippetList[i];
            if (s.startRe && !s.startRe.test(before))
                continue;
            if (s.endRe && !s.endRe.test(after))
                continue;
            if (!s.startRe && !s.endRe)
                continue;

            s.matchBefore = s.startRe ? s.startRe.exec(before) : [""];
            s.matchAfter = s.endRe ? s.endRe.exec(after) : [""];
            s.replaceBefore = s.triggerRe ? s.triggerRe.exec(before)[0] : "";
            s.replaceAfter = s.endTriggerRe ? s.endTriggerRe.exec(after)[0] : "";
            return s;
        }
    };

    this.snippetMap = {};
    this.snippetNameMap = {};
    this.register = function(snippets, scope) {
        var snippetMap = this.snippetMap;
        var snippetNameMap = this.snippetNameMap;
        var self = this;
        
        if (!snippets) 
            snippets = [];
        
        function wrapRegexp(src) {
            if (src && !/^\^?\(.*\)\$?$|^\\b$/.test(src))
                src = "(?:" + src + ")";

            return src || "";
        }
        function guardedRegexp(re, guard, opening) {
            re = wrapRegexp(re);
            guard = wrapRegexp(guard);
            if (opening) {
                re = guard + re;
                if (re && re[re.length - 1] != "$")
                    re = re + "$";
            } else {
                re = re + guard;
                if (re && re[0] != "^")
                    re = "^" + re;
            }
            return new RegExp(re);
        }

        function addSnippet(s) {
            if (!s.scope)
                s.scope = scope || "_";
            scope = s.scope;
            if (!snippetMap[scope]) {
                snippetMap[scope] = [];
                snippetNameMap[scope] = {};
            }

            var map = snippetNameMap[scope];
            if (s.name) {
                var old = map[s.name];
                if (old)
                    self.unregister(old);
                map[s.name] = s;
            }
            snippetMap[scope].push(s);

            if (s.tabTrigger && !s.trigger) {
                if (!s.guard && /^\w/.test(s.tabTrigger))
                    s.guard = "\\b";
                s.trigger = lang.escapeRegExp(s.tabTrigger);
            }
            
            if (!s.trigger && !s.guard && !s.endTrigger && !s.endGuard)
                return;
            
            s.startRe = guardedRegexp(s.trigger, s.guard, true);
            s.triggerRe = new RegExp(s.trigger, "", true);

            s.endRe = guardedRegexp(s.endTrigger, s.endGuard, true);
            s.endTriggerRe = new RegExp(s.endTrigger, "", true);
        }

        if (snippets && snippets.content)
            addSnippet(snippets);
        else if (Array.isArray(snippets))
            snippets.forEach(addSnippet);
        
        this._signal("registerSnippets", {scope: scope});
    };
    this.unregister = function(snippets, scope) {
        var snippetMap = this.snippetMap;
        var snippetNameMap = this.snippetNameMap;

        function removeSnippet(s) {
            var nameMap = snippetNameMap[s.scope||scope];
            if (nameMap && nameMap[s.name]) {
                delete nameMap[s.name];
                var map = snippetMap[s.scope||scope];
                var i = map && map.indexOf(s);
                if (i >= 0)
                    map.splice(i, 1);
            }
        }
        if (snippets.content)
            removeSnippet(snippets);
        else if (Array.isArray(snippets))
            snippets.forEach(removeSnippet);
    };
    this.parseSnippetFile = function(str) {
        str = str.replace(/\r/g, "");
        var list = [], snippet = {};
        var re = /^#.*|^({[\s\S]*})\s*$|^(\S+) (.*)$|^((?:\n*\t.*)+)/gm;
        var m;
        while (m = re.exec(str)) {
            if (m[1]) {
                try {
                    snippet = JSON.parse(m[1]);
                    list.push(snippet);
                } catch (e) {}
            } if (m[4]) {
                snippet.content = m[4].replace(/^\t/gm, "");
                list.push(snippet);
                snippet = {};
            } else {
                var key = m[2], val = m[3];
                if (key == "regex") {
                    var guardRe = /\/((?:[^\/\\]|\\.)*)|$/g;
                    snippet.guard = guardRe.exec(val)[1];
                    snippet.trigger = guardRe.exec(val)[1];
                    snippet.endTrigger = guardRe.exec(val)[1];
                    snippet.endGuard = guardRe.exec(val)[1];
                } else if (key == "snippet") {
                    snippet.tabTrigger = val.match(/^\S*/)[0];
                    if (!snippet.name)
                        snippet.name = val;
                } else {
                    snippet[key] = val;
                }
            }
        }
        return list;
    };
    this.getSnippetByName = function(name, editor) {
        var snippetMap = this.snippetNameMap;
        var snippet;
        this.getActiveScopes(editor).some(function(scope) {
            var snippets = snippetMap[scope];
            if (snippets)
                snippet = snippets[name];
            return !!snippet;
        }, this);
        return snippet;
    };

}).call(SnippetManager.prototype);


var TabstopManager = function(editor) {
    if (editor.tabstopManager)
        return editor.tabstopManager;
    editor.tabstopManager = this;
    this.$onChange = this.onChange.bind(this);
    this.$onChangeSelection = lang.delayedCall(this.onChangeSelection.bind(this)).schedule;
    this.$onChangeSession = this.onChangeSession.bind(this);
    this.$onAfterExec = this.onAfterExec.bind(this);
    this.attach(editor);
};
(function() {
    this.attach = function(editor) {
        this.index = 0;
        this.ranges = [];
        this.tabstops = [];
        this.$openTabstops = null;
        this.selectedTabstop = null;

        this.editor = editor;
        this.editor.on("change", this.$onChange);
        this.editor.on("changeSelection", this.$onChangeSelection);
        this.editor.on("changeSession", this.$onChangeSession);
        this.editor.commands.on("afterExec", this.$onAfterExec);
        this.editor.keyBinding.addKeyboardHandler(this.keyboardHandler);
    };
    this.detach = function() {
        this.tabstops.forEach(this.removeTabstopMarkers, this);
        this.ranges = null;
        this.tabstops = null;
        this.selectedTabstop = null;
        this.editor.removeListener("change", this.$onChange);
        this.editor.removeListener("changeSelection", this.$onChangeSelection);
        this.editor.removeListener("changeSession", this.$onChangeSession);
        this.editor.commands.removeListener("afterExec", this.$onAfterExec);
        this.editor.keyBinding.removeKeyboardHandler(this.keyboardHandler);
        this.editor.tabstopManager = null;
        this.editor = null;
    };

    this.onChange = function(delta) {
        var changeRange = delta;
        var isRemove = delta.action[0] == "r";
        var start = delta.start;
        var end = delta.end;
        var startRow = start.row;
        var endRow = end.row;
        var lineDif = endRow - startRow;
        var colDiff = end.column - start.column;

        if (isRemove) {
            lineDif = -lineDif;
            colDiff = -colDiff;
        }
        if (!this.$inChange && isRemove) {
            var ts = this.selectedTabstop;
            var changedOutside = ts && !ts.some(function(r) {
                return comparePoints(r.start, start) <= 0 && comparePoints(r.end, end) >= 0;
            });
            if (changedOutside)
                return this.detach();
        }
        var ranges = this.ranges;
        for (var i = 0; i < ranges.length; i++) {
            var r = ranges[i];
            if (r.end.row < start.row)
                continue;

            if (isRemove && comparePoints(start, r.start) < 0 && comparePoints(end, r.end) > 0) {
                this.removeRange(r);
                i--;
                continue;
            }

            if (r.start.row == startRow && r.start.column > start.column)
                r.start.column += colDiff;
            if (r.end.row == startRow && r.end.column >= start.column)
                r.end.column += colDiff;
            if (r.start.row >= startRow)
                r.start.row += lineDif;
            if (r.end.row >= startRow)
                r.end.row += lineDif;

            if (comparePoints(r.start, r.end) > 0)
                this.removeRange(r);
        }
        if (!ranges.length)
            this.detach();
    };
    this.updateLinkedFields = function() {
        var ts = this.selectedTabstop;
        if (!ts || !ts.hasLinkedRanges)
            return;
        this.$inChange = true;
        var session = this.editor.session;
        var text = session.getTextRange(ts.firstNonLinked);
        for (var i = ts.length; i--;) {
            var range = ts[i];
            if (!range.linked)
                continue;
            var fmt = exports.snippetManager.tmStrFormat(text, range.original);
            session.replace(range, fmt);
        }
        this.$inChange = false;
    };
    this.onAfterExec = function(e) {
        if (e.command && !e.command.readOnly)
            this.updateLinkedFields();
    };
    this.onChangeSelection = function() {
        if (!this.editor)
            return;
        var lead = this.editor.selection.lead;
        var anchor = this.editor.selection.anchor;
        var isEmpty = this.editor.selection.isEmpty();
        for (var i = this.ranges.length; i--;) {
            if (this.ranges[i].linked)
                continue;
            var containsLead = this.ranges[i].contains(lead.row, lead.column);
            var containsAnchor = isEmpty || this.ranges[i].contains(anchor.row, anchor.column);
            if (containsLead && containsAnchor)
                return;
        }
        this.detach();
    };
    this.onChangeSession = function() {
        this.detach();
    };
    this.tabNext = function(dir) {
        var max = this.tabstops.length;
        var index = this.index + (dir || 1);
        index = Math.min(Math.max(index, 1), max);
        if (index == max)
            index = 0;
        this.selectTabstop(index);
        if (index === 0)
            this.detach();
    };
    this.selectTabstop = function(index) {
        this.$openTabstops = null;
        var ts = this.tabstops[this.index];
        if (ts)
            this.addTabstopMarkers(ts);
        this.index = index;
        ts = this.tabstops[this.index];
        if (!ts || !ts.length)
            return;
        
        this.selectedTabstop = ts;
        if (!this.editor.inVirtualSelectionMode) {        
            var sel = this.editor.multiSelect;
            sel.toSingleRange(ts.firstNonLinked.clone());
            for (var i = ts.length; i--;) {
                if (ts.hasLinkedRanges && ts[i].linked)
                    continue;
                sel.addRange(ts[i].clone(), true);
            }
            if (sel.ranges[0])
                sel.addRange(sel.ranges[0].clone());
        } else {
            this.editor.selection.setRange(ts.firstNonLinked);
        }
        
        this.editor.keyBinding.addKeyboardHandler(this.keyboardHandler);
    };
    this.addTabstops = function(tabstops, start, end) {
        if (!this.$openTabstops)
            this.$openTabstops = [];
        if (!tabstops[0]) {
            var p = Range.fromPoints(end, end);
            moveRelative(p.start, start);
            moveRelative(p.end, start);
            tabstops[0] = [p];
            tabstops[0].index = 0;
        }

        var i = this.index;
        var arg = [i + 1, 0];
        var ranges = this.ranges;
        tabstops.forEach(function(ts, index) {
            var dest = this.$openTabstops[index] || ts;
                
            for (var i = ts.length; i--;) {
                var p = ts[i];
                var range = Range.fromPoints(p.start, p.end || p.start);
                movePoint(range.start, start);
                movePoint(range.end, start);
                range.original = p;
                range.tabstop = dest;
                ranges.push(range);
                if (dest != ts)
                    dest.unshift(range);
                else
                    dest[i] = range;
                if (p.fmtString) {
                    range.linked = true;
                    dest.hasLinkedRanges = true;
                } else if (!dest.firstNonLinked)
                    dest.firstNonLinked = range;
            }
            if (!dest.firstNonLinked)
                dest.hasLinkedRanges = false;
            if (dest === ts) {
                arg.push(dest);
                this.$openTabstops[index] = dest;
            }
            this.addTabstopMarkers(dest);
        }, this);
        
        if (arg.length > 2) {
            if (this.tabstops.length)
                arg.push(arg.splice(2, 1)[0]);
            this.tabstops.splice.apply(this.tabstops, arg);
        }
    };

    this.addTabstopMarkers = function(ts) {
        var session = this.editor.session;
        ts.forEach(function(range) {
            if  (!range.markerId)
                range.markerId = session.addMarker(range, "ace_snippet-marker", "text");
        });
    };
    this.removeTabstopMarkers = function(ts) {
        var session = this.editor.session;
        ts.forEach(function(range) {
            session.removeMarker(range.markerId);
            range.markerId = null;
        });
    };
    this.removeRange = function(range) {
        var i = range.tabstop.indexOf(range);
        range.tabstop.splice(i, 1);
        i = this.ranges.indexOf(range);
        this.ranges.splice(i, 1);
        this.editor.session.removeMarker(range.markerId);
        if (!range.tabstop.length) {
            i = this.tabstops.indexOf(range.tabstop);
            if (i != -1)
                this.tabstops.splice(i, 1);
            if (!this.tabstops.length)
                this.detach();
        }
    };

    this.keyboardHandler = new HashHandler();
    this.keyboardHandler.bindKeys({
        "Tab": function(ed) {
            if (exports.snippetManager && exports.snippetManager.expandWithTab(ed)) {
                return;
            }

            ed.tabstopManager.tabNext(1);
        },
        "Shift-Tab": function(ed) {
            ed.tabstopManager.tabNext(-1);
        },
        "Esc": function(ed) {
            ed.tabstopManager.detach();
        },
        "Return": function(ed) {
            return false;
        }
    });
}).call(TabstopManager.prototype);



var changeTracker = {};
changeTracker.onChange = Anchor.prototype.onChange;
changeTracker.setPosition = function(row, column) {
    this.pos.row = row;
    this.pos.column = column;
};
changeTracker.update = function(pos, delta, $insertRight) {
    this.$insertRight = $insertRight;
    this.pos = pos; 
    this.onChange(delta);
};

var movePoint = function(point, diff) {
    if (point.row == 0)
        point.column += diff.column;
    point.row += diff.row;
};

var moveRelative = function(point, start) {
    if (point.row == start.row)
        point.column -= start.column;
    point.row -= start.row;
};


acequire("./lib/dom").importCssString("\
.ace_snippet-marker {\
    -moz-box-sizing: border-box;\
    box-sizing: border-box;\
    background: rgba(194, 193, 208, 0.09);\
    border: 1px dotted rgba(211, 208, 235, 0.62);\
    position: absolute;\
}");

exports.snippetManager = new SnippetManager();


var Editor = acequire("./editor").Editor;
(function() {
    this.insertSnippet = function(content, options) {
        return exports.snippetManager.insertSnippet(this, content, options);
    };
    this.expandSnippet = function(options) {
        return exports.snippetManager.expandWithTab(this, options);
    };
}).call(Editor.prototype);

});

ace.define("ace/autocomplete/popup",["require","exports","module","ace/virtual_renderer","ace/editor","ace/range","ace/lib/event","ace/lib/lang","ace/lib/dom"], function(acequire, exports, module) {
"use strict";

var Renderer = acequire("../virtual_renderer").VirtualRenderer;
var Editor = acequire("../editor").Editor;
var Range = acequire("../range").Range;
var event = acequire("../lib/event");
var lang = acequire("../lib/lang");
var dom = acequire("../lib/dom");

var $singleLineEditor = function(el) {
    var renderer = new Renderer(el);

    renderer.$maxLines = 4;

    var editor = new Editor(renderer);

    editor.setHighlightActiveLine(false);
    editor.setShowPrintMargin(false);
    editor.renderer.setShowGutter(false);
    editor.renderer.setHighlightGutterLine(false);

    editor.$mouseHandler.$focusWaitTimout = 0;
    editor.$highlightTagPending = true;

    return editor;
};

var AcePopup = function(parentNode) {
    var el = dom.createElement("div");
    var popup = new $singleLineEditor(el);

    if (parentNode)
        parentNode.appendChild(el);
    el.style.display = "none";
    popup.renderer.content.style.cursor = "default";
    popup.renderer.setStyle("ace_autocomplete");

    popup.setOption("displayIndentGuides", false);
    popup.setOption("dragDelay", 150);

    var noop = function(){};

    popup.focus = noop;
    popup.$isFocused = true;

    popup.renderer.$cursorLayer.restartTimer = noop;
    popup.renderer.$cursorLayer.element.style.opacity = 0;

    popup.renderer.$maxLines = 8;
    popup.renderer.$keepTextAreaAtCursor = false;

    popup.setHighlightActiveLine(false);
    popup.session.highlight("");
    popup.session.$searchHighlight.clazz = "ace_highlight-marker";

    popup.on("mousedown", function(e) {
        var pos = e.getDocumentPosition();
        popup.selection.moveToPosition(pos);
        selectionMarker.start.row = selectionMarker.end.row = pos.row;
        e.stop();
    });

    var lastMouseEvent;
    var hoverMarker = new Range(-1,0,-1,Infinity);
    var selectionMarker = new Range(-1,0,-1,Infinity);
    selectionMarker.id = popup.session.addMarker(selectionMarker, "ace_active-line", "fullLine");
    popup.setSelectOnHover = function(val) {
        if (!val) {
            hoverMarker.id = popup.session.addMarker(hoverMarker, "ace_line-hover", "fullLine");
        } else if (hoverMarker.id) {
            popup.session.removeMarker(hoverMarker.id);
            hoverMarker.id = null;
        }
    };
    popup.setSelectOnHover(false);
    popup.on("mousemove", function(e) {
        if (!lastMouseEvent) {
            lastMouseEvent = e;
            return;
        }
        if (lastMouseEvent.x == e.x && lastMouseEvent.y == e.y) {
            return;
        }
        lastMouseEvent = e;
        lastMouseEvent.scrollTop = popup.renderer.scrollTop;
        var row = lastMouseEvent.getDocumentPosition().row;
        if (hoverMarker.start.row != row) {
            if (!hoverMarker.id)
                popup.setRow(row);
            setHoverMarker(row);
        }
    });
    popup.renderer.on("beforeRender", function() {
        if (lastMouseEvent && hoverMarker.start.row != -1) {
            lastMouseEvent.$pos = null;
            var row = lastMouseEvent.getDocumentPosition().row;
            if (!hoverMarker.id)
                popup.setRow(row);
            setHoverMarker(row, true);
        }
    });
    popup.renderer.on("afterRender", function() {
        var row = popup.getRow();
        var t = popup.renderer.$textLayer;
        var selected = t.element.childNodes[row - t.config.firstRow];
        if (selected == t.selectedNode)
            return;
        if (t.selectedNode)
            dom.removeCssClass(t.selectedNode, "ace_selected");
        t.selectedNode = selected;
        if (selected)
            dom.addCssClass(selected, "ace_selected");
    });
    var hideHoverMarker = function() { setHoverMarker(-1); };
    var setHoverMarker = function(row, suppressRedraw) {
        if (row !== hoverMarker.start.row) {
            hoverMarker.start.row = hoverMarker.end.row = row;
            if (!suppressRedraw)
                popup.session._emit("changeBackMarker");
            popup._emit("changeHoverMarker");
        }
    };
    popup.getHoveredRow = function() {
        return hoverMarker.start.row;
    };

    event.addListener(popup.container, "mouseout", hideHoverMarker);
    popup.on("hide", hideHoverMarker);
    popup.on("changeSelection", hideHoverMarker);

    popup.session.doc.getLength = function() {
        return popup.data.length;
    };
    popup.session.doc.getLine = function(i) {
        var data = popup.data[i];
        if (typeof data == "string")
            return data;
        return (data && data.value) || "";
    };

    var bgTokenizer = popup.session.bgTokenizer;
    bgTokenizer.$tokenizeRow = function(row) {
        var data = popup.data[row];
        var tokens = [];
        if (!data)
            return tokens;
        if (typeof data == "string")
            data = {value: data};
        if (!data.caption)
            data.caption = data.value || data.name;

        var last = -1;
        var flag, c;
        for (var i = 0; i < data.caption.length; i++) {
            c = data.caption[i];
            flag = data.matchMask & (1 << i) ? 1 : 0;
            if (last !== flag) {
                tokens.push({type: data.className || "" + ( flag ? "completion-highlight" : ""), value: c});
                last = flag;
            } else {
                tokens[tokens.length - 1].value += c;
            }
        }

        if (data.meta) {
            var maxW = popup.renderer.$size.scrollerWidth / popup.renderer.layerConfig.characterWidth;
            var metaData = data.meta;
            if (metaData.length + data.caption.length > maxW - 2) {
                metaData = metaData.substr(0, maxW - data.caption.length - 3) + "\u2026";
            }
            tokens.push({type: "rightAlignedText", value: metaData});
        }
        return tokens;
    };
    bgTokenizer.$updateOnChange = noop;
    bgTokenizer.start = noop;

    popup.session.$computeWidth = function() {
        return this.screenWidth = 0;
    };

    popup.$blockScrolling = Infinity;
    popup.isOpen = false;
    popup.isTopdown = false;
    popup.autoSelect = true;

    popup.data = [];
    popup.setData = function(list) {
        popup.setValue(lang.stringRepeat("\n", list.length), -1);
        popup.data = list || [];
        popup.setRow(0);
    };
    popup.getData = function(row) {
        return popup.data[row];
    };

    popup.getRow = function() {
        return selectionMarker.start.row;
    };
    popup.setRow = function(line) {
        line = Math.max(this.autoSelect ? 0 : -1, Math.min(this.data.length, line));
        if (selectionMarker.start.row != line) {
            popup.selection.clearSelection();
            selectionMarker.start.row = selectionMarker.end.row = line || 0;
            popup.session._emit("changeBackMarker");
            popup.moveCursorTo(line || 0, 0);
            if (popup.isOpen)
                popup._signal("select");
        }
    };

    popup.on("changeSelection", function() {
        if (popup.isOpen)
            popup.setRow(popup.selection.lead.row);
        popup.renderer.scrollCursorIntoView();
    });

    popup.hide = function() {
        this.container.style.display = "none";
        this._signal("hide");
        popup.isOpen = false;
    };
    popup.show = function(pos, lineHeight, topdownOnly) {
        var el = this.container;
        var screenHeight = window.innerHeight;
        var screenWidth = window.innerWidth;
        var renderer = this.renderer;
        var maxH = renderer.$maxLines * lineHeight * 1.4;
        var top = pos.top + this.$borderSize;
        var allowTopdown = top > screenHeight / 2 && !topdownOnly;
        if (allowTopdown && top + lineHeight + maxH > screenHeight) {
            renderer.$maxPixelHeight = top - 2 * this.$borderSize;
            el.style.top = "";
            el.style.bottom = screenHeight - top + "px";
            popup.isTopdown = false;
        } else {
            top += lineHeight;
            renderer.$maxPixelHeight = screenHeight - top - 0.2 * lineHeight;
            el.style.top = top + "px";
            el.style.bottom = "";
            popup.isTopdown = true;
        }

        el.style.display = "";
        this.renderer.$textLayer.checkForSizeChanges();

        var left = pos.left;
        if (left + el.offsetWidth > screenWidth)
            left = screenWidth - el.offsetWidth;

        el.style.left = left + "px";

        this._signal("show");
        lastMouseEvent = null;
        popup.isOpen = true;
    };

    popup.getTextLeftOffset = function() {
        return this.$borderSize + this.renderer.$padding + this.$imageSize;
    };

    popup.$imageSize = 0;
    popup.$borderSize = 1;

    return popup;
};

dom.importCssString("\
.ace_editor.ace_autocomplete .ace_marker-layer .ace_active-line {\
    background-color: #CAD6FA;\
    z-index: 1;\
}\
.ace_editor.ace_autocomplete .ace_line-hover {\
    border: 1px solid #abbffe;\
    margin-top: -1px;\
    background: rgba(233,233,253,0.4);\
}\
.ace_editor.ace_autocomplete .ace_line-hover {\
    position: absolute;\
    z-index: 2;\
}\
.ace_editor.ace_autocomplete .ace_scroller {\
   background: none;\
   border: none;\
   box-shadow: none;\
}\
.ace_rightAlignedText {\
    color: gray;\
    display: inline-block;\
    position: absolute;\
    right: 4px;\
    text-align: right;\
    z-index: -1;\
}\
.ace_editor.ace_autocomplete .ace_completion-highlight{\
    color: #000;\
    text-shadow: 0 0 0.01em;\
}\
.ace_editor.ace_autocomplete {\
    width: 280px;\
    z-index: 200000;\
    background: #fbfbfb;\
    color: #444;\
    border: 1px lightgray solid;\
    position: fixed;\
    box-shadow: 2px 3px 5px rgba(0,0,0,.2);\
    line-height: 1.4;\
}");

exports.AcePopup = AcePopup;

});

ace.define("ace/autocomplete/util",["require","exports","module"], function(acequire, exports, module) {
"use strict";

exports.parForEach = function(array, fn, callback) {
    var completed = 0;
    var arLength = array.length;
    if (arLength === 0)
        callback();
    for (var i = 0; i < arLength; i++) {
        fn(array[i], function(result, err) {
            completed++;
            if (completed === arLength)
                callback(result, err);
        });
    }
};

var ID_REGEX = /[a-zA-Z_0-9\$\-\u00A2-\uFFFF]/;

exports.retrievePrecedingIdentifier = function(text, pos, regex) {
    regex = regex || ID_REGEX;
    var buf = [];
    for (var i = pos-1; i >= 0; i--) {
        if (regex.test(text[i]))
            buf.push(text[i]);
        else
            break;
    }
    return buf.reverse().join("");
};

exports.retrieveFollowingIdentifier = function(text, pos, regex) {
    regex = regex || ID_REGEX;
    var buf = [];
    for (var i = pos; i < text.length; i++) {
        if (regex.test(text[i]))
            buf.push(text[i]);
        else
            break;
    }
    return buf;
};

exports.getCompletionPrefix = function (editor) {
    var pos = editor.getCursorPosition();
    var line = editor.session.getLine(pos.row);
    var prefix;
    editor.completers.forEach(function(completer) {
        if (completer.identifierRegexps) {
            completer.identifierRegexps.forEach(function(identifierRegex) {
                if (!prefix && identifierRegex)
                    prefix = this.retrievePrecedingIdentifier(line, pos.column, identifierRegex);
            }.bind(this));
        }
    }.bind(this));
    return prefix || this.retrievePrecedingIdentifier(line, pos.column);
};

});

ace.define("ace/autocomplete",["require","exports","module","ace/keyboard/hash_handler","ace/autocomplete/popup","ace/autocomplete/util","ace/lib/event","ace/lib/lang","ace/lib/dom","ace/snippets"], function(acequire, exports, module) {
"use strict";

var HashHandler = acequire("./keyboard/hash_handler").HashHandler;
var AcePopup = acequire("./autocomplete/popup").AcePopup;
var util = acequire("./autocomplete/util");
var event = acequire("./lib/event");
var lang = acequire("./lib/lang");
var dom = acequire("./lib/dom");
var snippetManager = acequire("./snippets").snippetManager;

var Autocomplete = function() {
    this.autoInsert = false;
    this.autoSelect = true;
    this.exactMatch = false;
    this.gatherCompletionsId = 0;
    this.keyboardHandler = new HashHandler();
    this.keyboardHandler.bindKeys(this.commands);

    this.blurListener = this.blurListener.bind(this);
    this.changeListener = this.changeListener.bind(this);
    this.mousedownListener = this.mousedownListener.bind(this);
    this.mousewheelListener = this.mousewheelListener.bind(this);

    this.changeTimer = lang.delayedCall(function() {
        this.updateCompletions(true);
    }.bind(this));

    this.tooltipTimer = lang.delayedCall(this.updateDocTooltip.bind(this), 50);
};

(function() {

    this.$init = function() {
        this.popup = new AcePopup(document.body || document.documentElement);
        this.popup.on("click", function(e) {
            this.insertMatch();
            e.stop();
        }.bind(this));
        this.popup.focus = this.editor.focus.bind(this.editor);
        this.popup.on("show", this.tooltipTimer.bind(null, null));
        this.popup.on("select", this.tooltipTimer.bind(null, null));
        this.popup.on("changeHoverMarker", this.tooltipTimer.bind(null, null));
        return this.popup;
    };

    this.getPopup = function() {
        return this.popup || this.$init();
    };

    this.openPopup = function(editor, prefix, keepPopupPosition) {
        if (!this.popup)
            this.$init();

	this.popup.autoSelect = this.autoSelect;

        this.popup.setData(this.completions.filtered);

        editor.keyBinding.addKeyboardHandler(this.keyboardHandler);
        
        var renderer = editor.renderer;
        this.popup.setRow(this.autoSelect ? 0 : -1);
        if (!keepPopupPosition) {
            this.popup.setTheme(editor.getTheme());
            this.popup.setFontSize(editor.getFontSize());

            var lineHeight = renderer.layerConfig.lineHeight;

            var pos = renderer.$cursorLayer.getPixelPosition(this.base, true);
            pos.left -= this.popup.getTextLeftOffset();

            var rect = editor.container.getBoundingClientRect();
            pos.top += rect.top - renderer.layerConfig.offset;
            pos.left += rect.left - editor.renderer.scrollLeft;
            pos.left += renderer.gutterWidth;

            this.popup.show(pos, lineHeight);
        } else if (keepPopupPosition && !prefix) {
            this.detach();
        }
    };

    this.detach = function() {
        this.editor.keyBinding.removeKeyboardHandler(this.keyboardHandler);
        this.editor.off("changeSelection", this.changeListener);
        this.editor.off("blur", this.blurListener);
        this.editor.off("mousedown", this.mousedownListener);
        this.editor.off("mousewheel", this.mousewheelListener);
        this.changeTimer.cancel();
        this.hideDocTooltip();

        this.gatherCompletionsId += 1;
        if (this.popup && this.popup.isOpen)
            this.popup.hide();

        if (this.base)
            this.base.detach();
        this.activated = false;
        this.completions = this.base = null;
    };

    this.changeListener = function(e) {
        var cursor = this.editor.selection.lead;
        if (cursor.row != this.base.row || cursor.column < this.base.column) {
            this.detach();
        }
        if (this.activated)
            this.changeTimer.schedule();
        else
            this.detach();
    };

    this.blurListener = function(e) {
        var el = document.activeElement;
        var text = this.editor.textInput.getElement();
        var fromTooltip = e.relatedTarget && this.tooltipNode && this.tooltipNode.contains(e.relatedTarget);
        var container = this.popup && this.popup.container;
        if (el != text && el.parentNode != container && !fromTooltip
            && el != this.tooltipNode && e.relatedTarget != text
        ) {
            this.detach();
        }
    };

    this.mousedownListener = function(e) {
        this.detach();
    };

    this.mousewheelListener = function(e) {
        this.detach();
    };

    this.goTo = function(where) {
        var row = this.popup.getRow();
        var max = this.popup.session.getLength() - 1;

        switch(where) {
            case "up": row = row <= 0 ? max : row - 1; break;
            case "down": row = row >= max ? -1 : row + 1; break;
            case "start": row = 0; break;
            case "end": row = max; break;
        }

        this.popup.setRow(row);
    };

    this.insertMatch = function(data, options) {
        if (!data)
            data = this.popup.getData(this.popup.getRow());
        if (!data)
            return false;

        if (data.completer && data.completer.insertMatch) {
            data.completer.insertMatch(this.editor, data);
        } else {
            if (this.completions.filterText) {
                var ranges = this.editor.selection.getAllRanges();
                for (var i = 0, range; range = ranges[i]; i++) {
                    range.start.column -= this.completions.filterText.length;
                    this.editor.session.remove(range);
                }
            }
            if (data.snippet)
                snippetManager.insertSnippet(this.editor, data.snippet);
            else
                this.editor.execCommand("insertstring", data.value || data);
        }
        this.detach();
    };


    this.commands = {
        "Up": function(editor) { editor.completer.goTo("up"); },
        "Down": function(editor) { editor.completer.goTo("down"); },
        "Ctrl-Up|Ctrl-Home": function(editor) { editor.completer.goTo("start"); },
        "Ctrl-Down|Ctrl-End": function(editor) { editor.completer.goTo("end"); },

        "Esc": function(editor) { editor.completer.detach(); },
        "Return": function(editor) { return editor.completer.insertMatch(); },
        "Shift-Return": function(editor) { editor.completer.insertMatch(null, {deleteSuffix: true}); },
        "Tab": function(editor) {
            var result = editor.completer.insertMatch();
            if (!result && !editor.tabstopManager)
                editor.completer.goTo("down");
            else
                return result;
        },

        "PageUp": function(editor) { editor.completer.popup.gotoPageUp(); },
        "PageDown": function(editor) { editor.completer.popup.gotoPageDown(); }
    };

    this.gatherCompletions = function(editor, callback) {
        var session = editor.getSession();
        var pos = editor.getCursorPosition();

        var prefix = util.getCompletionPrefix(editor);

        this.base = session.doc.createAnchor(pos.row, pos.column - prefix.length);
        this.base.$insertRight = true;

        var matches = [];
        var total = editor.completers.length;
        editor.completers.forEach(function(completer, i) {
            completer.getCompletions(editor, session, pos, prefix, function(err, results) {
                if (!err && results)
                    matches = matches.concat(results);
                callback(null, {
                    prefix: util.getCompletionPrefix(editor),
                    matches: matches,
                    finished: (--total === 0)
                });
            });
        });
        return true;
    };

    this.showPopup = function(editor) {
        if (this.editor)
            this.detach();

        this.activated = true;

        this.editor = editor;
        if (editor.completer != this) {
            if (editor.completer)
                editor.completer.detach();
            editor.completer = this;
        }

        editor.on("changeSelection", this.changeListener);
        editor.on("blur", this.blurListener);
        editor.on("mousedown", this.mousedownListener);
        editor.on("mousewheel", this.mousewheelListener);

        this.updateCompletions();
    };

    this.updateCompletions = function(keepPopupPosition) {
        if (keepPopupPosition && this.base && this.completions) {
            var pos = this.editor.getCursorPosition();
            var prefix = this.editor.session.getTextRange({start: this.base, end: pos});
            if (prefix == this.completions.filterText)
                return;
            this.completions.setFilter(prefix);
            if (!this.completions.filtered.length)
                return this.detach();
            if (this.completions.filtered.length == 1
            && this.completions.filtered[0].value == prefix
            && !this.completions.filtered[0].snippet)
                return this.detach();
            this.openPopup(this.editor, prefix, keepPopupPosition);
            return;
        }
        var _id = this.gatherCompletionsId;
        this.gatherCompletions(this.editor, function(err, results) {
            var detachIfFinished = function() {
                if (!results.finished) return;
                return this.detach();
            }.bind(this);

            var prefix = results.prefix;
            var matches = results && results.matches;

            if (!matches || !matches.length)
                return detachIfFinished();
            if (prefix.indexOf(results.prefix) !== 0 || _id != this.gatherCompletionsId)
                return;

            this.completions = new FilteredList(matches);

            if (this.exactMatch)
                this.completions.exactMatch = true;

            this.completions.setFilter(prefix);
            var filtered = this.completions.filtered;
            if (!filtered.length)
                return detachIfFinished();
            if (filtered.length == 1 && filtered[0].value == prefix && !filtered[0].snippet)
                return detachIfFinished();
            if (this.autoInsert && filtered.length == 1 && results.finished)
                return this.insertMatch(filtered[0]);

            this.openPopup(this.editor, prefix, keepPopupPosition);
        }.bind(this));
    };

    this.cancelContextMenu = function() {
        this.editor.$mouseHandler.cancelContextMenu();
    };

    this.updateDocTooltip = function() {
        var popup = this.popup;
        var all = popup.data;
        var selected = all && (all[popup.getHoveredRow()] || all[popup.getRow()]);
        var doc = null;
        if (!selected || !this.editor || !this.popup.isOpen)
            return this.hideDocTooltip();
        this.editor.completers.some(function(completer) {
            if (completer.getDocTooltip)
                doc = completer.getDocTooltip(selected);
            return doc;
        });
        if (!doc)
            doc = selected;

        if (typeof doc == "string")
            doc = {docText: doc};
        if (!doc || !(doc.docHTML || doc.docText))
            return this.hideDocTooltip();
        this.showDocTooltip(doc);
    };

    this.showDocTooltip = function(item) {
        if (!this.tooltipNode) {
            this.tooltipNode = dom.createElement("div");
            this.tooltipNode.className = "ace_tooltip ace_doc-tooltip";
            this.tooltipNode.style.margin = 0;
            this.tooltipNode.style.pointerEvents = "auto";
            this.tooltipNode.tabIndex = -1;
            this.tooltipNode.onblur = this.blurListener.bind(this);
            this.tooltipNode.onclick = this.onTooltipClick.bind(this);
        }

        var tooltipNode = this.tooltipNode;
        if (item.docHTML) {
            tooltipNode.innerHTML = item.docHTML;
        } else if (item.docText) {
            tooltipNode.textContent = item.docText;
        }

        if (!tooltipNode.parentNode)
            document.body.appendChild(tooltipNode);
        var popup = this.popup;
        var rect = popup.container.getBoundingClientRect();
        tooltipNode.style.top = popup.container.style.top;
        tooltipNode.style.bottom = popup.container.style.bottom;

        if (window.innerWidth - rect.right < 320) {
            tooltipNode.style.right = window.innerWidth - rect.left + "px";
            tooltipNode.style.left = "";
        } else {
            tooltipNode.style.left = (rect.right + 1) + "px";
            tooltipNode.style.right = "";
        }
        tooltipNode.style.display = "block";
    };

    this.hideDocTooltip = function() {
        this.tooltipTimer.cancel();
        if (!this.tooltipNode) return;
        var el = this.tooltipNode;
        if (!this.editor.isFocused() && document.activeElement == el)
            this.editor.focus();
        this.tooltipNode = null;
        if (el.parentNode)
            el.parentNode.removeChild(el);
    };

    this.onTooltipClick = function(e) {
        var a = e.target;
        while (a && a != this.tooltipNode) {
            if (a.nodeName == "A" && a.href) {
                a.rel = "noreferrer";
                a.target = "_blank";
                break;
            }
            a = a.parentNode;
        }
    };

}).call(Autocomplete.prototype);

Autocomplete.startCommand = {
    name: "startAutocomplete",
    exec: function(editor) {
        if (!editor.completer)
            editor.completer = new Autocomplete();
        editor.completer.autoInsert = false;
        editor.completer.autoSelect = true;
        editor.completer.showPopup(editor);
        editor.completer.cancelContextMenu();
    },
    bindKey: "Ctrl-Space|Ctrl-Shift-Space|Alt-Space"
};

var FilteredList = function(array, filterText) {
    this.all = array;
    this.filtered = array;
    this.filterText = filterText || "";
    this.exactMatch = false;
};
(function(){
    this.setFilter = function(str) {
        if (str.length > this.filterText && str.lastIndexOf(this.filterText, 0) === 0)
            var matches = this.filtered;
        else
            var matches = this.all;

        this.filterText = str;
        matches = this.filterCompletions(matches, this.filterText);
        matches = matches.sort(function(a, b) {
            return b.exactMatch - a.exactMatch || b.score - a.score;
        });
        var prev = null;
        matches = matches.filter(function(item){
            var caption = item.snippet || item.caption || item.value;
            if (caption === prev) return false;
            prev = caption;
            return true;
        });

        this.filtered = matches;
    };
    this.filterCompletions = function(items, needle) {
        var results = [];
        var upper = needle.toUpperCase();
        var lower = needle.toLowerCase();
        loop: for (var i = 0, item; item = items[i]; i++) {
            var caption = item.value || item.caption || item.snippet;
            if (!caption) continue;
            var lastIndex = -1;
            var matchMask = 0;
            var penalty = 0;
            var index, distance;

            if (this.exactMatch) {
                if (needle !== caption.substr(0, needle.length))
                    continue loop;
            }else{
                for (var j = 0; j < needle.length; j++) {
                    var i1 = caption.indexOf(lower[j], lastIndex + 1);
                    var i2 = caption.indexOf(upper[j], lastIndex + 1);
                    index = (i1 >= 0) ? ((i2 < 0 || i1 < i2) ? i1 : i2) : i2;
                    if (index < 0)
                        continue loop;
                    distance = index - lastIndex - 1;
                    if (distance > 0) {
                        if (lastIndex === -1)
                            penalty += 10;
                        penalty += distance;
                    }
                    matchMask = matchMask | (1 << index);
                    lastIndex = index;
                }
            }
            item.matchMask = matchMask;
            item.exactMatch = penalty ? 0 : 1;
            item.score = (item.score || 0) - penalty;
            results.push(item);
        }
        return results;
    };
}).call(FilteredList.prototype);

exports.Autocomplete = Autocomplete;
exports.FilteredList = FilteredList;

});

ace.define("ace/autocomplete/text_completer",["require","exports","module","ace/range"], function(acequire, exports, module) {
    var Range = acequire("../range").Range;
    
    var splitRegex = /[^a-zA-Z_0-9\$\-\u00C0-\u1FFF\u2C00-\uD7FF\w]+/;

    function getWordIndex(doc, pos) {
        var textBefore = doc.getTextRange(Range.fromPoints({row: 0, column:0}, pos));
        return textBefore.split(splitRegex).length - 1;
    }
    function wordDistance(doc, pos) {
        var prefixPos = getWordIndex(doc, pos);
        var words = doc.getValue().split(splitRegex);
        var wordScores = Object.create(null);
        
        var currentWord = words[prefixPos];

        words.forEach(function(word, idx) {
            if (!word || word === currentWord) return;

            var distance = Math.abs(prefixPos - idx);
            var score = words.length - distance;
            if (wordScores[word]) {
                wordScores[word] = Math.max(score, wordScores[word]);
            } else {
                wordScores[word] = score;
            }
        });
        return wordScores;
    }

    exports.getCompletions = function(editor, session, pos, prefix, callback) {
        var wordScore = wordDistance(session, pos, prefix);
        var wordList = Object.keys(wordScore);
        callback(null, wordList.map(function(word) {
            return {
                caption: word,
                value: word,
                score: wordScore[word],
                meta: "local"
            };
        }));
    };
});

ace.define("ace/ext/language_tools",["require","exports","module","ace/snippets","ace/autocomplete","ace/config","ace/lib/lang","ace/autocomplete/util","ace/autocomplete/text_completer","ace/editor","ace/config"], function(acequire, exports, module) {
"use strict";

var snippetManager = acequire("../snippets").snippetManager;
var Autocomplete = acequire("../autocomplete").Autocomplete;
var config = acequire("../config");
var lang = acequire("../lib/lang");
var util = acequire("../autocomplete/util");

var textCompleter = acequire("../autocomplete/text_completer");
var keyWordCompleter = {
    getCompletions: function(editor, session, pos, prefix, callback) {
        if (session.$mode.completer) {
            return session.$mode.completer.getCompletions(editor, session, pos, prefix, callback);
        }
        var state = editor.session.getState(pos.row);
        var completions = session.$mode.getCompletions(state, session, pos, prefix);
        callback(null, completions);
    }
};

var snippetCompleter = {
    getCompletions: function(editor, session, pos, prefix, callback) {
        var snippetMap = snippetManager.snippetMap;
        var completions = [];
        snippetManager.getActiveScopes(editor).forEach(function(scope) {
            var snippets = snippetMap[scope] || [];
            for (var i = snippets.length; i--;) {
                var s = snippets[i];
                var caption = s.name || s.tabTrigger;
                if (!caption)
                    continue;
                completions.push({
                    caption: caption,
                    snippet: s.content,
                    meta: s.tabTrigger && !s.name ? s.tabTrigger + "\u21E5 " : "snippet",
                    type: "snippet"
                });
            }
        }, this);
        callback(null, completions);
    },
    getDocTooltip: function(item) {
        if (item.type == "snippet" && !item.docHTML) {
            item.docHTML = [
                "<b>", lang.escapeHTML(item.caption), "</b>", "<hr></hr>",
                lang.escapeHTML(item.snippet)
            ].join("");
        }
    }
};

var completers = [snippetCompleter, textCompleter, keyWordCompleter];
exports.setCompleters = function(val) {
    completers.length = 0;
    if (val) completers.push.apply(completers, val);
};
exports.addCompleter = function(completer) {
    completers.push(completer);
};
exports.textCompleter = textCompleter;
exports.keyWordCompleter = keyWordCompleter;
exports.snippetCompleter = snippetCompleter;

var expandSnippet = {
    name: "expandSnippet",
    exec: function(editor) {
        return snippetManager.expandWithTab(editor);
    },
    bindKey: "Tab"
};

var onChangeMode = function(e, editor) {
    loadSnippetsForMode(editor.session.$mode);
};

var loadSnippetsForMode = function(mode) {
    var id = mode.$id;
    if (!snippetManager.files)
        snippetManager.files = {};
    loadSnippetFile(id);
    if (mode.modes)
        mode.modes.forEach(loadSnippetsForMode);
};

var loadSnippetFile = function(id) {
    if (!id || snippetManager.files[id])
        return;
    var snippetFilePath = id.replace("mode", "snippets");
    snippetManager.files[id] = {};
    config.loadModule(snippetFilePath, function(m) {
        if (m) {
            snippetManager.files[id] = m;
            if (!m.snippets && m.snippetText)
                m.snippets = snippetManager.parseSnippetFile(m.snippetText);
            snippetManager.register(m.snippets || [], m.scope);
            if (m.includeScopes) {
                snippetManager.snippetMap[m.scope].includeScopes = m.includeScopes;
                m.includeScopes.forEach(function(x) {
                    loadSnippetFile("ace/mode/" + x);
                });
            }
        }
    });
};

var doLiveAutocomplete = function(e) {
    var editor = e.editor;
    var hasCompleter = editor.completer && editor.completer.activated;
    if (e.command.name === "backspace") {
        if (hasCompleter && !util.getCompletionPrefix(editor))
            editor.completer.detach();
    }
    else if (e.command.name === "insertstring") {
        var prefix = util.getCompletionPrefix(editor);
        if (prefix && !hasCompleter) {
            if (!editor.completer) {
                editor.completer = new Autocomplete();
            }
            editor.completer.autoInsert = false;
            editor.completer.showPopup(editor);
        }
    }
};

var Editor = acequire("../editor").Editor;
acequire("../config").defineOptions(Editor.prototype, "editor", {
    enableBasicAutocompletion: {
        set: function(val) {
            if (val) {
                if (!this.completers)
                    this.completers = Array.isArray(val)? val: completers;
                this.commands.addCommand(Autocomplete.startCommand);
            } else {
                this.commands.removeCommand(Autocomplete.startCommand);
            }
        },
        value: false
    },
    enableLiveAutocompletion: {
        set: function(val) {
            if (val) {
                if (!this.completers)
                    this.completers = Array.isArray(val)? val: completers;
                this.commands.on('afterExec', doLiveAutocomplete);
            } else {
                this.commands.removeListener('afterExec', doLiveAutocomplete);
            }
        },
        value: false
    },
    enableSnippets: {
        set: function(val) {
            if (val) {
                this.commands.addCommand(expandSnippet);
                this.on("changeMode", onChangeMode);
                onChangeMode(null, this);
            } else {
                this.commands.removeCommand(expandSnippet);
                this.off("changeMode", onChangeMode);
            }
        },
        value: false
    }
});
});
                (function() {
                    ace.acequire(["ace/ext/language_tools"], function() {});
                })();
            

/***/ }),
/* 597 */
/*!************************************************!*\
  !*** ./node_modules/brace/keybinding/emacs.js ***!
  \************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/occur",["require","exports","module","ace/lib/oop","ace/range","ace/search","ace/edit_session","ace/search_highlight","ace/lib/dom"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var Range = acequire("./range").Range;
var Search = acequire("./search").Search;
var EditSession = acequire("./edit_session").EditSession;
var SearchHighlight = acequire("./search_highlight").SearchHighlight;
function Occur() {}

oop.inherits(Occur, Search);

(function() {
    this.enter = function(editor, options) {
        if (!options.needle) return false;
        var pos = editor.getCursorPosition();
        this.displayOccurContent(editor, options);
        var translatedPos = this.originalToOccurPosition(editor.session, pos);
        editor.moveCursorToPosition(translatedPos);
        return true;
    };
    this.exit = function(editor, options) {
        var pos = options.translatePosition && editor.getCursorPosition();
        var translatedPos = pos && this.occurToOriginalPosition(editor.session, pos);
        this.displayOriginalContent(editor);
        if (translatedPos)
            editor.moveCursorToPosition(translatedPos);
        return true;
    };

    this.highlight = function(sess, regexp) {
        var hl = sess.$occurHighlight = sess.$occurHighlight || sess.addDynamicMarker(
                new SearchHighlight(null, "ace_occur-highlight", "text"));
        hl.setRegexp(regexp);
        sess._emit("changeBackMarker"); // force highlight layer redraw
    };

    this.displayOccurContent = function(editor, options) {
        this.$originalSession = editor.session;
        var found = this.matchingLines(editor.session, options);
        var lines = found.map(function(foundLine) { return foundLine.content; });
        var occurSession = new EditSession(lines.join('\n'));
        occurSession.$occur = this;
        occurSession.$occurMatchingLines = found;
        editor.setSession(occurSession);
        this.$useEmacsStyleLineStart = this.$originalSession.$useEmacsStyleLineStart;
        occurSession.$useEmacsStyleLineStart = this.$useEmacsStyleLineStart;
        this.highlight(occurSession, options.re);
        occurSession._emit('changeBackMarker');
    };

    this.displayOriginalContent = function(editor) {
        editor.setSession(this.$originalSession);
        this.$originalSession.$useEmacsStyleLineStart = this.$useEmacsStyleLineStart;
    };
    this.originalToOccurPosition = function(session, pos) {
        var lines = session.$occurMatchingLines;
        var nullPos = {row: 0, column: 0};
        if (!lines) return nullPos;
        for (var i = 0; i < lines.length; i++) {
            if (lines[i].row === pos.row)
                return {row: i, column: pos.column};
        }
        return nullPos;
    };
    this.occurToOriginalPosition = function(session, pos) {
        var lines = session.$occurMatchingLines;
        if (!lines || !lines[pos.row])
            return pos;
        return {row: lines[pos.row].row, column: pos.column};
    };

    this.matchingLines = function(session, options) {
        options = oop.mixin({}, options);
        if (!session || !options.needle) return [];
        var search = new Search();
        search.set(options);
        return search.findAll(session).reduce(function(lines, range) {
            var row = range.start.row;
            var last = lines[lines.length-1];
            return last && last.row === row ?
                lines :
                lines.concat({row: row, content: session.getLine(row)});
        }, []);
    };

}).call(Occur.prototype);

var dom = acequire('./lib/dom');
dom.importCssString(".ace_occur-highlight {\n\
    border-radius: 4px;\n\
    background-color: rgba(87, 255, 8, 0.25);\n\
    position: absolute;\n\
    z-index: 4;\n\
    -moz-box-sizing: border-box;\n\
    -webkit-box-sizing: border-box;\n\
    box-sizing: border-box;\n\
    box-shadow: 0 0 4px rgb(91, 255, 50);\n\
}\n\
.ace_dark .ace_occur-highlight {\n\
    background-color: rgb(80, 140, 85);\n\
    box-shadow: 0 0 4px rgb(60, 120, 70);\n\
}\n", "incremental-occur-highlighting");

exports.Occur = Occur;

});

ace.define("ace/commands/occur_commands",["require","exports","module","ace/config","ace/occur","ace/keyboard/hash_handler","ace/lib/oop"], function(acequire, exports, module) {

var config = acequire("../config"),
    Occur = acequire("../occur").Occur;
var occurStartCommand = {
    name: "occur",
    exec: function(editor, options) {
        var alreadyInOccur = !!editor.session.$occur;
        var occurSessionActive = new Occur().enter(editor, options);
        if (occurSessionActive && !alreadyInOccur)
            OccurKeyboardHandler.installIn(editor);
    },
    readOnly: true
};

var occurCommands = [{
    name: "occurexit",
    bindKey: 'esc|Ctrl-G',
    exec: function(editor) {
        var occur = editor.session.$occur;
        if (!occur) return;
        occur.exit(editor, {});
        if (!editor.session.$occur) OccurKeyboardHandler.uninstallFrom(editor);
    },
    readOnly: true
}, {
    name: "occuraccept",
    bindKey: 'enter',
    exec: function(editor) {
        var occur = editor.session.$occur;
        if (!occur) return;
        occur.exit(editor, {translatePosition: true});
        if (!editor.session.$occur) OccurKeyboardHandler.uninstallFrom(editor);
    },
    readOnly: true
}];

var HashHandler = acequire("../keyboard/hash_handler").HashHandler;
var oop = acequire("../lib/oop");


function OccurKeyboardHandler() {}

oop.inherits(OccurKeyboardHandler, HashHandler);

(function() {

    this.isOccurHandler = true;

    this.attach = function(editor) {
        HashHandler.call(this, occurCommands, editor.commands.platform);
        this.$editor = editor;
    };

    var handleKeyboard$super = this.handleKeyboard;
    this.handleKeyboard = function(data, hashId, key, keyCode) {
        var cmd = handleKeyboard$super.call(this, data, hashId, key, keyCode);
        return (cmd && cmd.command) ? cmd : undefined;
    };

}).call(OccurKeyboardHandler.prototype);

OccurKeyboardHandler.installIn = function(editor) {
    var handler = new this();
    editor.keyBinding.addKeyboardHandler(handler);
    editor.commands.addCommands(occurCommands);
};

OccurKeyboardHandler.uninstallFrom = function(editor) {
    editor.commands.removeCommands(occurCommands);
    var handler = editor.getKeyboardHandler();
    if (handler.isOccurHandler)
        editor.keyBinding.removeKeyboardHandler(handler);
};

exports.occurStartCommand = occurStartCommand;

});

ace.define("ace/commands/incremental_search_commands",["require","exports","module","ace/config","ace/lib/oop","ace/keyboard/hash_handler","ace/commands/occur_commands"], function(acequire, exports, module) {

var config = acequire("../config");
var oop = acequire("../lib/oop");
var HashHandler = acequire("../keyboard/hash_handler").HashHandler;
var occurStartCommand = acequire("./occur_commands").occurStartCommand;
exports.iSearchStartCommands = [{
    name: "iSearch",
    bindKey: {win: "Ctrl-F", mac: "Command-F"},
    exec: function(editor, options) {
        config.loadModule(["core", "ace/incremental_search"], function(e) {
            var iSearch = e.iSearch = e.iSearch || new e.IncrementalSearch();
            iSearch.activate(editor, options.backwards);
            if (options.jumpToFirstMatch) iSearch.next(options);
        });
    },
    readOnly: true
}, {
    name: "iSearchBackwards",
    exec: function(editor, jumpToNext) { editor.execCommand('iSearch', {backwards: true}); },
    readOnly: true
}, {
    name: "iSearchAndGo",
    bindKey: {win: "Ctrl-K", mac: "Command-G"},
    exec: function(editor, jumpToNext) { editor.execCommand('iSearch', {jumpToFirstMatch: true, useCurrentOrPrevSearch: true}); },
    readOnly: true
}, {
    name: "iSearchBackwardsAndGo",
    bindKey: {win: "Ctrl-Shift-K", mac: "Command-Shift-G"},
    exec: function(editor) { editor.execCommand('iSearch', {jumpToFirstMatch: true, backwards: true, useCurrentOrPrevSearch: true}); },
    readOnly: true
}];
exports.iSearchCommands = [{
    name: "restartSearch",
    bindKey: {win: "Ctrl-F", mac: "Command-F"},
    exec: function(iSearch) {
        iSearch.cancelSearch(true);
    }
}, {
    name: "searchForward",
    bindKey: {win: "Ctrl-S|Ctrl-K", mac: "Ctrl-S|Command-G"},
    exec: function(iSearch, options) {
        options.useCurrentOrPrevSearch = true;
        iSearch.next(options);
    }
}, {
    name: "searchBackward",
    bindKey: {win: "Ctrl-R|Ctrl-Shift-K", mac: "Ctrl-R|Command-Shift-G"},
    exec: function(iSearch, options) {
        options.useCurrentOrPrevSearch = true;
        options.backwards = true;
        iSearch.next(options);
    }
}, {
    name: "extendSearchTerm",
    exec: function(iSearch, string) {
        iSearch.addString(string);
    }
}, {
    name: "extendSearchTermSpace",
    bindKey: "space",
    exec: function(iSearch) { iSearch.addString(' '); }
}, {
    name: "shrinkSearchTerm",
    bindKey: "backspace",
    exec: function(iSearch) {
        iSearch.removeChar();
    }
}, {
    name: 'confirmSearch',
    bindKey: 'return',
    exec: function(iSearch) { iSearch.deactivate(); }
}, {
    name: 'cancelSearch',
    bindKey: 'esc|Ctrl-G',
    exec: function(iSearch) { iSearch.deactivate(true); }
}, {
    name: 'occurisearch',
    bindKey: 'Ctrl-O',
    exec: function(iSearch) {
        var options = oop.mixin({}, iSearch.$options);
        iSearch.deactivate();
        occurStartCommand.exec(iSearch.$editor, options);
    }
}, {
    name: "yankNextWord",
    bindKey: "Ctrl-w",
    exec: function(iSearch) {
        var ed = iSearch.$editor,
            range = ed.selection.getRangeOfMovements(function(sel) { sel.moveCursorWordRight(); }),
            string = ed.session.getTextRange(range);
        iSearch.addString(string);
    }
}, {
    name: "yankNextChar",
    bindKey: "Ctrl-Alt-y",
    exec: function(iSearch) {
        var ed = iSearch.$editor,
            range = ed.selection.getRangeOfMovements(function(sel) { sel.moveCursorRight(); }),
            string = ed.session.getTextRange(range);
        iSearch.addString(string);
    }
}, {
    name: 'recenterTopBottom',
    bindKey: 'Ctrl-l',
    exec: function(iSearch) { iSearch.$editor.execCommand('recenterTopBottom'); }
}, {
    name: 'selectAllMatches',
    bindKey: 'Ctrl-space',
    exec: function(iSearch) {
        var ed = iSearch.$editor,
            hl = ed.session.$isearchHighlight,
            ranges = hl && hl.cache ? hl.cache
                .reduce(function(ranges, ea) {
                    return ranges.concat(ea ? ea : []); }, []) : [];
        iSearch.deactivate(false);
        ranges.forEach(ed.selection.addRange.bind(ed.selection));
    }
}, {
    name: 'searchAsRegExp',
    bindKey: 'Alt-r',
    exec: function(iSearch) {
        iSearch.convertNeedleToRegExp();
    }
}].map(function(cmd) {
    cmd.readOnly = true;
    cmd.isIncrementalSearchCommand = true;
    cmd.scrollIntoView = "animate-cursor";
    return cmd;
});

function IncrementalSearchKeyboardHandler(iSearch) {
    this.$iSearch = iSearch;
}

oop.inherits(IncrementalSearchKeyboardHandler, HashHandler);

(function() {

    this.attach = function(editor) {
        var iSearch = this.$iSearch;
        HashHandler.call(this, exports.iSearchCommands, editor.commands.platform);
        this.$commandExecHandler = editor.commands.addEventListener('exec', function(e) {
            if (!e.command.isIncrementalSearchCommand)
                return iSearch.deactivate();
            e.stopPropagation();
            e.preventDefault();
            var scrollTop = editor.session.getScrollTop();
            var result = e.command.exec(iSearch, e.args || {});
            editor.renderer.scrollCursorIntoView(null, 0.5);
            editor.renderer.animateScrolling(scrollTop);
            return result;
        });
    };

    this.detach = function(editor) {
        if (!this.$commandExecHandler) return;
        editor.commands.removeEventListener('exec', this.$commandExecHandler);
        delete this.$commandExecHandler;
    };

    var handleKeyboard$super = this.handleKeyboard;
    this.handleKeyboard = function(data, hashId, key, keyCode) {
        if (((hashId === 1/*ctrl*/ || hashId === 8/*command*/) && key === 'v')
         || (hashId === 1/*ctrl*/ && key === 'y')) return null;
        var cmd = handleKeyboard$super.call(this, data, hashId, key, keyCode);
        if (cmd.command) { return cmd; }
        if (hashId == -1) {
            var extendCmd = this.commands.extendSearchTerm;
            if (extendCmd) { return {command: extendCmd, args: key}; }
        }
        return false;
    };

}).call(IncrementalSearchKeyboardHandler.prototype);


exports.IncrementalSearchKeyboardHandler = IncrementalSearchKeyboardHandler;

});

ace.define("ace/incremental_search",["require","exports","module","ace/lib/oop","ace/range","ace/search","ace/search_highlight","ace/commands/incremental_search_commands","ace/lib/dom","ace/commands/command_manager","ace/editor","ace/config"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var Range = acequire("./range").Range;
var Search = acequire("./search").Search;
var SearchHighlight = acequire("./search_highlight").SearchHighlight;
var iSearchCommandModule = acequire("./commands/incremental_search_commands");
var ISearchKbd = iSearchCommandModule.IncrementalSearchKeyboardHandler;
function IncrementalSearch() {
    this.$options = {wrap: false, skipCurrent: false};
    this.$keyboardHandler = new ISearchKbd(this);
}

oop.inherits(IncrementalSearch, Search);

function isRegExp(obj) {
    return obj instanceof RegExp;
}

function regExpToObject(re) {
    var string = String(re),
        start = string.indexOf('/'),
        flagStart = string.lastIndexOf('/');
    return {
        expression: string.slice(start+1, flagStart),
        flags: string.slice(flagStart+1)
    };
}

function stringToRegExp(string, flags) {
    try {
        return new RegExp(string, flags);
    } catch (e) { return string; }
}

function objectToRegExp(obj) {
    return stringToRegExp(obj.expression, obj.flags);
}

(function() {

    this.activate = function(ed, backwards) {
        this.$editor = ed;
        this.$startPos = this.$currentPos = ed.getCursorPosition();
        this.$options.needle = '';
        this.$options.backwards = backwards;
        ed.keyBinding.addKeyboardHandler(this.$keyboardHandler);
        this.$originalEditorOnPaste = ed.onPaste; ed.onPaste = this.onPaste.bind(this);
        this.$mousedownHandler = ed.addEventListener('mousedown', this.onMouseDown.bind(this));
        this.selectionFix(ed);
        this.statusMessage(true);
    };

    this.deactivate = function(reset) {
        this.cancelSearch(reset);
        var ed = this.$editor;
        ed.keyBinding.removeKeyboardHandler(this.$keyboardHandler);
        if (this.$mousedownHandler) {
            ed.removeEventListener('mousedown', this.$mousedownHandler);
            delete this.$mousedownHandler;
        }
        ed.onPaste = this.$originalEditorOnPaste;
        this.message('');
    };

    this.selectionFix = function(editor) {
        if (editor.selection.isEmpty() && !editor.session.$emacsMark) {
            editor.clearSelection();
        }
    };

    this.highlight = function(regexp) {
        var sess = this.$editor.session,
            hl = sess.$isearchHighlight = sess.$isearchHighlight || sess.addDynamicMarker(
                new SearchHighlight(null, "ace_isearch-result", "text"));
        hl.setRegexp(regexp);
        sess._emit("changeBackMarker"); // force highlight layer redraw
    };

    this.cancelSearch = function(reset) {
        var e = this.$editor;
        this.$prevNeedle = this.$options.needle;
        this.$options.needle = '';
        if (reset) {
            e.moveCursorToPosition(this.$startPos);
            this.$currentPos = this.$startPos;
        } else {
            e.pushEmacsMark && e.pushEmacsMark(this.$startPos, false);
        }
        this.highlight(null);
        return Range.fromPoints(this.$currentPos, this.$currentPos);
    };

    this.highlightAndFindWithNeedle = function(moveToNext, needleUpdateFunc) {
        if (!this.$editor) return null;
        var options = this.$options;
        if (needleUpdateFunc) {
            options.needle = needleUpdateFunc.call(this, options.needle || '') || '';
        }
        if (options.needle.length === 0) {
            this.statusMessage(true);
            return this.cancelSearch(true);
        }
        options.start = this.$currentPos;
        var session = this.$editor.session,
            found = this.find(session),
            shouldSelect = this.$editor.emacsMark ?
                !!this.$editor.emacsMark() : !this.$editor.selection.isEmpty();
        if (found) {
            if (options.backwards) found = Range.fromPoints(found.end, found.start);
            this.$editor.selection.setRange(Range.fromPoints(shouldSelect ? this.$startPos : found.end, found.end));
            if (moveToNext) this.$currentPos = found.end;
            this.highlight(options.re);
        }

        this.statusMessage(found);

        return found;
    };

    this.addString = function(s) {
        return this.highlightAndFindWithNeedle(false, function(needle) {
            if (!isRegExp(needle))
              return needle + s;
            var reObj = regExpToObject(needle);
            reObj.expression += s;
            return objectToRegExp(reObj);
        });
    };

    this.removeChar = function(c) {
        return this.highlightAndFindWithNeedle(false, function(needle) {
            if (!isRegExp(needle))
              return needle.substring(0, needle.length-1);
            var reObj = regExpToObject(needle);
            reObj.expression = reObj.expression.substring(0, reObj.expression.length-1);
            return objectToRegExp(reObj);
        });
    };

    this.next = function(options) {
        options = options || {};
        this.$options.backwards = !!options.backwards;
        this.$currentPos = this.$editor.getCursorPosition();
        return this.highlightAndFindWithNeedle(true, function(needle) {
            return options.useCurrentOrPrevSearch && needle.length === 0 ?
                this.$prevNeedle || '' : needle;
        });
    };

    this.onMouseDown = function(evt) {
        this.deactivate();
        return true;
    };

    this.onPaste = function(text) {
        this.addString(text);
    };

    this.convertNeedleToRegExp = function() {
        return this.highlightAndFindWithNeedle(false, function(needle) {
            return isRegExp(needle) ? needle : stringToRegExp(needle, 'ig');
        });
    };

    this.convertNeedleToString = function() {
        return this.highlightAndFindWithNeedle(false, function(needle) {
            return isRegExp(needle) ? regExpToObject(needle).expression : needle;
        });
    };

    this.statusMessage = function(found) {
        var options = this.$options, msg = '';
        msg += options.backwards ? 'reverse-' : '';
        msg += 'isearch: ' + options.needle;
        msg += found ? '' : ' (not found)';
        this.message(msg);
    };

    this.message = function(msg) {
        if (this.$editor.showCommandLine) {
            this.$editor.showCommandLine(msg);
            this.$editor.focus();
        } else {
            console.log(msg);
        }
    };

}).call(IncrementalSearch.prototype);


exports.IncrementalSearch = IncrementalSearch;

var dom = acequire('./lib/dom');
dom.importCssString && dom.importCssString("\
.ace_marker-layer .ace_isearch-result {\
  position: absolute;\
  z-index: 6;\
  -moz-box-sizing: border-box;\
  -webkit-box-sizing: border-box;\
  box-sizing: border-box;\
}\
div.ace_isearch-result {\
  border-radius: 4px;\
  background-color: rgba(255, 200, 0, 0.5);\
  box-shadow: 0 0 4px rgb(255, 200, 0);\
}\
.ace_dark div.ace_isearch-result {\
  background-color: rgb(100, 110, 160);\
  box-shadow: 0 0 4px rgb(80, 90, 140);\
}", "incremental-search-highlighting");
var commands = acequire("./commands/command_manager");
(function() {
    this.setupIncrementalSearch = function(editor, val) {
        if (this.usesIncrementalSearch == val) return;
        this.usesIncrementalSearch = val;
        var iSearchCommands = iSearchCommandModule.iSearchStartCommands;
        var method = val ? 'addCommands' : 'removeCommands';
        this[method](iSearchCommands);
    };
}).call(commands.CommandManager.prototype);
var Editor = acequire("./editor").Editor;
acequire("./config").defineOptions(Editor.prototype, "editor", {
    useIncrementalSearch: {
        set: function(val) {
            this.keyBinding.$handlers.forEach(function(handler) {
                if (handler.setupIncrementalSearch) {
                    handler.setupIncrementalSearch(this, val);
                }
            });
            this._emit('incrementalSearchSettingChanged', {isEnabled: val});
        }
    }
});

});

ace.define("ace/keyboard/emacs",["require","exports","module","ace/lib/dom","ace/incremental_search","ace/commands/incremental_search_commands","ace/keyboard/hash_handler","ace/lib/keys"], function(acequire, exports, module) {
"use strict";

var dom = acequire("../lib/dom");
acequire("../incremental_search");
var iSearchCommandModule = acequire("../commands/incremental_search_commands");


var screenToTextBlockCoordinates = function(x, y) {
    var canvasPos = this.scroller.getBoundingClientRect();
    var offsetX = x + this.scrollLeft - canvasPos.left - this.$padding;

    var col = Math.floor(offsetX / this.characterWidth);

    var row = Math.floor(
        (y + this.scrollTop - canvasPos.top) / this.lineHeight
    );

    return this.session.screenToDocumentPosition(row, col, offsetX);
};

var HashHandler = acequire("./hash_handler").HashHandler;
exports.handler = new HashHandler();

exports.handler.isEmacs = true;
exports.handler.$id = "ace/keyboard/emacs";

var initialized = false;
var $formerLongWords;
var $formerLineStart;

exports.handler.attach = function(editor) {
    if (!initialized) {
        initialized = true;
        dom.importCssString('\
            .emacs-mode .ace_cursor{\
                border: 1px rgba(50,250,50,0.8) solid!important;\
                -moz-box-sizing: border-box!important;\
                -webkit-box-sizing: border-box!important;\
                box-sizing: border-box!important;\
                background-color: rgba(0,250,0,0.9);\
                opacity: 0.5;\
            }\
            .emacs-mode .ace_hidden-cursors .ace_cursor{\
                opacity: 1;\
                background-color: transparent;\
            }\
            .emacs-mode .ace_overwrite-cursors .ace_cursor {\
                opacity: 1;\
                background-color: transparent;\
                border-width: 0 0 2px 2px !important;\
            }\
            .emacs-mode .ace_text-layer {\
                z-index: 4\
            }\
            .emacs-mode .ace_cursor-layer {\
                z-index: 2\
            }', 'emacsMode'
        );
    }
    $formerLongWords = editor.session.$selectLongWords;
    editor.session.$selectLongWords = true;
    $formerLineStart = editor.session.$useEmacsStyleLineStart;
    editor.session.$useEmacsStyleLineStart = true;

    editor.session.$emacsMark = null; // the active mark
    editor.session.$emacsMarkRing = editor.session.$emacsMarkRing || [];

    editor.emacsMark = function() {
        return this.session.$emacsMark;
    };

    editor.setEmacsMark = function(p) {
        this.session.$emacsMark = p;
    };

    editor.pushEmacsMark = function(p, activate) {
        var prevMark = this.session.$emacsMark;
        if (prevMark)
            this.session.$emacsMarkRing.push(prevMark);
        if (!p || activate) this.setEmacsMark(p);
        else this.session.$emacsMarkRing.push(p);
    };

    editor.popEmacsMark = function() {
        var mark = this.emacsMark();
        if (mark) { this.setEmacsMark(null); return mark; }
        return this.session.$emacsMarkRing.pop();
    };

    editor.getLastEmacsMark = function(p) {
        return this.session.$emacsMark || this.session.$emacsMarkRing.slice(-1)[0];
    };

    editor.emacsMarkForSelection = function(replacement) {
        var sel = this.selection,
            multiRangeLength = this.multiSelect ?
                this.multiSelect.getAllRanges().length : 1,
            selIndex = sel.index || 0,
            markRing = this.session.$emacsMarkRing,
            markIndex = markRing.length - (multiRangeLength - selIndex),
            lastMark = markRing[markIndex] || sel.anchor;
        if (replacement) {
            markRing.splice(markIndex, 1,
                "row" in replacement && "column" in replacement ?
                    replacement : undefined);
        }
        return lastMark;
    };

    editor.on("click", $resetMarkMode);
    editor.on("changeSession", $kbSessionChange);
    editor.renderer.screenToTextCoordinates = screenToTextBlockCoordinates;
    editor.setStyle("emacs-mode");
    editor.commands.addCommands(commands);
    exports.handler.platform = editor.commands.platform;
    editor.$emacsModeHandler = this;
    editor.addEventListener('copy', this.onCopy);
    editor.addEventListener('paste', this.onPaste);
};

exports.handler.detach = function(editor) {
    delete editor.renderer.screenToTextCoordinates;
    editor.session.$selectLongWords = $formerLongWords;
    editor.session.$useEmacsStyleLineStart = $formerLineStart;
    editor.removeEventListener("click", $resetMarkMode);
    editor.removeEventListener("changeSession", $kbSessionChange);
    editor.unsetStyle("emacs-mode");
    editor.commands.removeCommands(commands);
    editor.removeEventListener('copy', this.onCopy);
    editor.removeEventListener('paste', this.onPaste);
    editor.$emacsModeHandler = null;
};

var $kbSessionChange = function(e) {
    if (e.oldSession) {
        e.oldSession.$selectLongWords = $formerLongWords;
        e.oldSession.$useEmacsStyleLineStart = $formerLineStart;
    }

    $formerLongWords = e.session.$selectLongWords;
    e.session.$selectLongWords = true;
    $formerLineStart = e.session.$useEmacsStyleLineStart;
    e.session.$useEmacsStyleLineStart = true;

    if (!e.session.hasOwnProperty('$emacsMark'))
        e.session.$emacsMark = null;
    if (!e.session.hasOwnProperty('$emacsMarkRing'))
        e.session.$emacsMarkRing = [];
};

var $resetMarkMode = function(e) {
    e.editor.session.$emacsMark = null;
};

var keys = acequire("../lib/keys").KEY_MODS;
var eMods = {C: "ctrl", S: "shift", M: "alt", CMD: "command"};
var combinations = ["C-S-M-CMD",
                    "S-M-CMD", "C-M-CMD", "C-S-CMD", "C-S-M",
                    "M-CMD", "S-CMD", "S-M", "C-CMD", "C-M", "C-S",
                    "CMD", "M", "S", "C"];
combinations.forEach(function(c) {
    var hashId = 0;
    c.split("-").forEach(function(c) {
        hashId = hashId | keys[eMods[c]];
    });
    eMods[hashId] = c.toLowerCase() + "-";
});

exports.handler.onCopy = function(e, editor) {
    if (editor.$handlesEmacsOnCopy) return;
    editor.$handlesEmacsOnCopy = true;
    exports.handler.commands.killRingSave.exec(editor);
    editor.$handlesEmacsOnCopy = false;
};

exports.handler.onPaste = function(e, editor) {
    editor.pushEmacsMark(editor.getCursorPosition());
};

exports.handler.bindKey = function(key, command) {
    if (typeof key == "object")
        key = key[this.platform];
    if (!key)
        return;

    var ckb = this.commandKeyBinding;
    key.split("|").forEach(function(keyPart) {
        keyPart = keyPart.toLowerCase();
        ckb[keyPart] = command;
        var keyParts = keyPart.split(" ").slice(0,-1);
        keyParts.reduce(function(keyMapKeys, keyPart, i) {
            var prefix = keyMapKeys[i-1] ? keyMapKeys[i-1] + ' ' : '';
            return keyMapKeys.concat([prefix + keyPart]);
        }, []).forEach(function(keyPart) {
            if (!ckb[keyPart]) ckb[keyPart] = "null";
        });
    }, this);
};

exports.handler.getStatusText = function(editor, data) {
  var str = "";
  if (data.count)
    str += data.count;
  if (data.keyChain)
    str += " " + data.keyChain;
  return str;
};

exports.handler.handleKeyboard = function(data, hashId, key, keyCode) {
    if (keyCode === -1) return undefined;

    var editor = data.editor;
    editor._signal("changeStatus");
    if (hashId == -1) {
        editor.pushEmacsMark();
        if (data.count) {
            var str = new Array(data.count + 1).join(key);
            data.count = null;
            return {command: "insertstring", args: str};
        }
    }

    var modifier = eMods[hashId];
    if (modifier == "c-" || data.count) {
        var count = parseInt(key[key.length - 1]);
        if (typeof count === 'number' && !isNaN(count)) {
            data.count = Math.max(data.count, 0) || 0;
            data.count = 10 * data.count + count;
            return {command: "null"};
        }
    }
    if (modifier) key = modifier + key;
    if (data.keyChain) key = data.keyChain += " " + key;
    var command = this.commandKeyBinding[key];
    data.keyChain = command == "null" ? key : "";
    if (!command) return undefined;
    if (command === "null") return {command: "null"};

    if (command === "universalArgument") {
        data.count = -4;
        return {command: "null"};
    }
    var args;
    if (typeof command !== "string") {
        args = command.args;
        if (command.command) command = command.command;
        if (command === "goorselect") {
            command = editor.emacsMark() ? args[1] : args[0];
            args = null;
        }
    }

    if (typeof command === "string") {
        if (command === "insertstring" ||
            command === "splitline" ||
            command === "togglecomment") {
            editor.pushEmacsMark();
        }
        command = this.commands[command] || editor.commands.commands[command];
        if (!command) return undefined;
    }

    if (!command.readOnly && !command.isYank)
        data.lastCommand = null;

    if (!command.readOnly && editor.emacsMark())
        editor.setEmacsMark(null);
        
    if (data.count) {
        var count = data.count;
        data.count = 0;
        if (!command || !command.handlesCount) {
            return {
                args: args,
                command: {
                    exec: function(editor, args) {
                        for (var i = 0; i < count; i++)
                            command.exec(editor, args);
                    },
                    multiSelectAction: command.multiSelectAction
                }
            };
        } else {
            if (!args) args = {};
            if (typeof args === 'object') args.count = count;
        }
    }

    return {command: command, args: args};
};

exports.emacsKeys = {
    "Up|C-p"      : {command: "goorselect", args: ["golineup","selectup"]},
    "Down|C-n"    : {command: "goorselect", args: ["golinedown","selectdown"]},
    "Left|C-b"    : {command: "goorselect", args: ["gotoleft","selectleft"]},
    "Right|C-f"   : {command: "goorselect", args: ["gotoright","selectright"]},
    "C-Left|M-b"  : {command: "goorselect", args: ["gotowordleft","selectwordleft"]},
    "C-Right|M-f" : {command: "goorselect", args: ["gotowordright","selectwordright"]},
    "Home|C-a"    : {command: "goorselect", args: ["gotolinestart","selecttolinestart"]},
    "End|C-e"     : {command: "goorselect", args: ["gotolineend","selecttolineend"]},
    "C-Home|S-M-,": {command: "goorselect", args: ["gotostart","selecttostart"]},
    "C-End|S-M-." : {command: "goorselect", args: ["gotoend","selecttoend"]},
    "S-Up|S-C-p"      : "selectup",
    "S-Down|S-C-n"    : "selectdown",
    "S-Left|S-C-b"    : "selectleft",
    "S-Right|S-C-f"   : "selectright",
    "S-C-Left|S-M-b"  : "selectwordleft",
    "S-C-Right|S-M-f" : "selectwordright",
    "S-Home|S-C-a"    : "selecttolinestart",
    "S-End|S-C-e"     : "selecttolineend",
    "S-C-Home"        : "selecttostart",
    "S-C-End"         : "selecttoend",

    "C-l" : "recenterTopBottom",
    "M-s" : "centerselection",
    "M-g": "gotoline",
    "C-x C-p": "selectall",
    "C-Down": {command: "goorselect", args: ["gotopagedown","selectpagedown"]},
    "C-Up": {command: "goorselect", args: ["gotopageup","selectpageup"]},
    "PageDown|C-v": {command: "goorselect", args: ["gotopagedown","selectpagedown"]},
    "PageUp|M-v": {command: "goorselect", args: ["gotopageup","selectpageup"]},
    "S-C-Down": "selectpagedown",
    "S-C-Up": "selectpageup",

    "C-s": "iSearch",
    "C-r": "iSearchBackwards",

    "M-C-s": "findnext",
    "M-C-r": "findprevious",
    "S-M-5": "replace",
    "Backspace": "backspace",
    "Delete|C-d": "del",
    "Return|C-m": {command: "insertstring", args: "\n"}, // "newline"
    "C-o": "splitline",

    "M-d|C-Delete": {command: "killWord", args: "right"},
    "C-Backspace|M-Backspace|M-Delete": {command: "killWord", args: "left"},
    "C-k": "killLine",

    "C-y|S-Delete": "yank",
    "M-y": "yankRotate",
    "C-g": "keyboardQuit",

    "C-w|C-S-W": "killRegion",
    "M-w": "killRingSave",
    "C-Space": "setMark",
    "C-x C-x": "exchangePointAndMark",

    "C-t": "transposeletters",
    "M-u": "touppercase",    // Doesn't work
    "M-l": "tolowercase",
    "M-/": "autocomplete",   // Doesn't work
    "C-u": "universalArgument",

    "M-;": "togglecomment",

    "C-/|C-x u|S-C--|C-z": "undo",
    "S-C-/|S-C-x u|C--|S-C-z": "redo", // infinite undo?
    "C-x r":  "selectRectangularRegion",
    "M-x": {command: "focusCommandLine", args: "M-x "}
};


exports.handler.bindKeys(exports.emacsKeys);

exports.handler.addCommands({
    recenterTopBottom: function(editor) {
        var renderer = editor.renderer;
        var pos = renderer.$cursorLayer.getPixelPosition();
        var h = renderer.$size.scrollerHeight - renderer.lineHeight;
        var scrollTop = renderer.scrollTop;
        if (Math.abs(pos.top - scrollTop) < 2) {
            scrollTop = pos.top - h;
        } else if (Math.abs(pos.top - scrollTop - h * 0.5) < 2) {
            scrollTop = pos.top;
        } else {
            scrollTop = pos.top - h * 0.5;
        }
        editor.session.setScrollTop(scrollTop);
    },
    selectRectangularRegion:  function(editor) {
        editor.multiSelect.toggleBlockSelection();
    },
    setMark:  {
        exec: function(editor, args) {

            if (args && args.count) {
                if (editor.inMultiSelectMode) editor.forEachSelection(moveToMark);
                else moveToMark();
                moveToMark();
                return;
            }

            var mark = editor.emacsMark(),
                ranges = editor.selection.getAllRanges(),
                rangePositions = ranges.map(function(r) { return {row: r.start.row, column: r.start.column}; }),
                transientMarkModeActive = true,
                hasNoSelection = ranges.every(function(range) { return range.isEmpty(); });
            if (transientMarkModeActive && (mark || !hasNoSelection)) {
                if (editor.inMultiSelectMode) editor.forEachSelection({exec: editor.clearSelection.bind(editor)});
                else editor.clearSelection();
                if (mark) editor.pushEmacsMark(null);
                return;
            }

            if (!mark) {
                rangePositions.forEach(function(pos) { editor.pushEmacsMark(pos); });
                editor.setEmacsMark(rangePositions[rangePositions.length-1]);
                return;
            }

            function moveToMark() {
                var mark = editor.popEmacsMark();
                mark && editor.moveCursorToPosition(mark);
            }

        },
        readOnly: true,
        handlesCount: true
    },
    exchangePointAndMark: {
        exec: function exchangePointAndMark$exec(editor, args) {
            var sel = editor.selection;
            if (!args.count && !sel.isEmpty()) { // just invert selection
                sel.setSelectionRange(sel.getRange(), !sel.isBackwards());
                return;
            }

            if (args.count) { // replace mark and point
                var pos = {row: sel.lead.row, column: sel.lead.column};
                sel.clearSelection();
                sel.moveCursorToPosition(editor.emacsMarkForSelection(pos));
            } else { // create selection to last mark
                sel.selectToPosition(editor.emacsMarkForSelection());
            }
        },
        readOnly: true,
        handlesCount: true,
        multiSelectAction: "forEach"
    },
    killWord: {
        exec: function(editor, dir) {
            editor.clearSelection();
            if (dir == "left")
                editor.selection.selectWordLeft();
            else
                editor.selection.selectWordRight();

            var range = editor.getSelectionRange();
            var text = editor.session.getTextRange(range);
            exports.killRing.add(text);

            editor.session.remove(range);
            editor.clearSelection();
        },
        multiSelectAction: "forEach"
    },
    killLine: function(editor) {
        editor.pushEmacsMark(null);
        editor.clearSelection();
        var range = editor.getSelectionRange();
        var line = editor.session.getLine(range.start.row);
        range.end.column = line.length;
        line = line.substr(range.start.column);
        
        var foldLine = editor.session.getFoldLine(range.start.row);
        if (foldLine && range.end.row != foldLine.end.row) {
            range.end.row = foldLine.end.row;
            line = "x";
        }
        if (/^\s*$/.test(line)) {
            range.end.row++;
            line = editor.session.getLine(range.end.row);
            range.end.column = /^\s*$/.test(line) ? line.length : 0;
        }
        var text = editor.session.getTextRange(range);
        if (editor.prevOp.command == this)
            exports.killRing.append(text);
        else
            exports.killRing.add(text);

        editor.session.remove(range);
        editor.clearSelection();
    },
    yank: function(editor) {
        editor.onPaste(exports.killRing.get() || '');
        editor.keyBinding.$data.lastCommand = "yank";
    },
    yankRotate: function(editor) {
        if (editor.keyBinding.$data.lastCommand != "yank")
            return;
        editor.undo();
        editor.session.$emacsMarkRing.pop(); // also undo recording mark
        editor.onPaste(exports.killRing.rotate());
        editor.keyBinding.$data.lastCommand = "yank";
    },
    killRegion: {
        exec: function(editor) {
            exports.killRing.add(editor.getCopyText());
            editor.commands.byName.cut.exec(editor);
            editor.setEmacsMark(null);
        },
        readOnly: true,
        multiSelectAction: "forEach"
    },
    killRingSave: {
        exec: function(editor) {

            editor.$handlesEmacsOnCopy = true;
            var marks = editor.session.$emacsMarkRing.slice(),
                deselectedMarks = [];
            exports.killRing.add(editor.getCopyText());

            setTimeout(function() {
                function deselect() {
                    var sel = editor.selection, range = sel.getRange(),
                        pos = sel.isBackwards() ? range.end : range.start;
                    deselectedMarks.push({row: pos.row, column: pos.column});
                    sel.clearSelection();
                }
                editor.$handlesEmacsOnCopy = false;
                if (editor.inMultiSelectMode) editor.forEachSelection({exec: deselect});
                else deselect();
                editor.session.$emacsMarkRing = marks.concat(deselectedMarks.reverse());
            }, 0);
        },
        readOnly: true
    },
    keyboardQuit: function(editor) {
        editor.selection.clearSelection();
        editor.setEmacsMark(null);
        editor.keyBinding.$data.count = null;
    },
    focusCommandLine: function(editor, arg) {
        if (editor.showCommandLine)
            editor.showCommandLine(arg);
    }
});

exports.handler.addCommands(iSearchCommandModule.iSearchStartCommands);

var commands = exports.handler.commands;
commands.yank.isYank = true;
commands.yankRotate.isYank = true;

exports.killRing = {
    $data: [],
    add: function(str) {
        str && this.$data.push(str);
        if (this.$data.length > 30)
            this.$data.shift();
    },
    append: function(str) {
        var idx = this.$data.length - 1;
        var text = this.$data[idx] || "";
        if (str) text += str;
        if (text) this.$data[idx] = text;
    },
    get: function(n) {
        n = n || 1;
        return this.$data.slice(this.$data.length-n, this.$data.length).reverse().join('\n');
    },
    pop: function() {
        if (this.$data.length > 1)
            this.$data.pop();
        return this.get();
    },
    rotate: function() {
        this.$data.unshift(this.$data.pop());
        return this.get();
    }
};

});


/***/ }),
/* 598 */
/*!**********************************************!*\
  !*** ./node_modules/brace/keybinding/vim.js ***!
  \**********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/keyboard/vim",["require","exports","module","ace/range","ace/lib/event_emitter","ace/lib/dom","ace/lib/oop","ace/lib/keys","ace/lib/event","ace/search","ace/lib/useragent","ace/search_highlight","ace/commands/multi_select_commands","ace/mode/text","ace/multi_select"], function(acequire, exports, module) {
  'use strict';

  function log() {
    var d = "";
    function format(p) {
      if (typeof p != "object")
        return p + "";
      if ("line" in p) {
        return p.line + ":" + p.ch;
      }
      if ("anchor" in p) {
        return format(p.anchor) + "->" + format(p.head);
      }
      if (Array.isArray(p))
        return "[" + p.map(function(x) {
          return format(x);
        }) + "]";
      return JSON.stringify(p);
    }
    for (var i = 0; i < arguments.length; i++) {
      var p = arguments[i];
      var f = format(p);
      d += f + "  ";
    }
    console.log(d);
  }
  var Range = acequire("../range").Range;
  var EventEmitter = acequire("../lib/event_emitter").EventEmitter;
  var dom = acequire("../lib/dom");
  var oop = acequire("../lib/oop");
  var KEYS = acequire("../lib/keys");
  var event = acequire("../lib/event");
  var Search = acequire("../search").Search;
  var useragent = acequire("../lib/useragent");
  var SearchHighlight = acequire("../search_highlight").SearchHighlight;
  var multiSelectCommands = acequire("../commands/multi_select_commands");
  var TextModeTokenRe = acequire("../mode/text").Mode.prototype.tokenRe;
  acequire("../multi_select");

  var CodeMirror = function(ace) {
    this.ace = ace;
    this.state = {};
    this.marks = {};
    this.$uid = 0;
    this.onChange = this.onChange.bind(this);
    this.onSelectionChange = this.onSelectionChange.bind(this);
    this.onBeforeEndOperation = this.onBeforeEndOperation.bind(this);
    this.ace.on('change', this.onChange);
    this.ace.on('changeSelection', this.onSelectionChange);
    this.ace.on('beforeEndOperation', this.onBeforeEndOperation);
  };
  CodeMirror.Pos = function(line, ch) {
    if (!(this instanceof Pos)) return new Pos(line, ch);
    this.line = line; this.ch = ch;
  };
  CodeMirror.defineOption = function(name, val, setter) {};
  CodeMirror.commands = {
    redo: function(cm) { cm.ace.redo(); },
    undo: function(cm) { cm.ace.undo(); },
    newlineAndIndent: function(cm) { cm.ace.insert("\n"); }
  };
  CodeMirror.keyMap = {};
  CodeMirror.addClass = CodeMirror.rmClass =
  CodeMirror.e_stop = function() {};
  CodeMirror.keyName = function(e) {
    if (e.key) return e.key;
    var key = (KEYS[e.keyCode] || "");
    if (key.length == 1) key = key.toUpperCase();
    key = event.getModifierString(e).replace(/(^|-)\w/g, function(m) {
      return m.toUpperCase();
    }) + key;
    return key;
  };
  CodeMirror.keyMap['default'] = function(key) {
    return function(cm) {
      var cmd = cm.ace.commands.commandKeyBinding[key.toLowerCase()];
      return cmd && cm.ace.execCommand(cmd) !== false;
    };
  };
  CodeMirror.lookupKey = function lookupKey(key, map, handle) {
    if (typeof map == "string")
      map = CodeMirror.keyMap[map];
    var found = typeof map == "function" ? map(key) : map[key];
    if (found === false) return "nothing";
    if (found === "...") return "multi";
    if (found != null && handle(found)) return "handled";

    if (map.fallthrough) {
      if (!Array.isArray(map.fallthrough))
        return lookupKey(key, map.fallthrough, handle);
      for (var i = 0; i < map.fallthrough.length; i++) {
        var result = lookupKey(key, map.fallthrough[i], handle);
        if (result) return result;
      }
    }
  };

  CodeMirror.signal = function(o, name, e) { return o._signal(name, e) };
  CodeMirror.on = event.addListener;
  CodeMirror.off = event.removeListener;
  CodeMirror.isWordChar = function(ch) {
    if (ch < "\x7f") return /^\w$/.test(ch);
    TextModeTokenRe.lastIndex = 0;
    return TextModeTokenRe.test(ch);
  };
  
(function() {
  oop.implement(CodeMirror.prototype, EventEmitter);
  
  this.destroy = function() {
    this.ace.off('change', this.onChange);
    this.ace.off('changeSelection', this.onSelectionChange);
    this.ace.off('beforeEndOperation', this.onBeforeEndOperation);
    this.removeOverlay();
  };
  this.virtualSelectionMode = function() {
    return this.ace.inVirtualSelectionMode && this.ace.selection.index;
  };
  this.onChange = function(delta) {
    var change = { text: delta.action[0] == 'i' ? delta.lines : [] };
    var curOp = this.curOp = this.curOp || {};
    if (!curOp.changeHandlers)
      curOp.changeHandlers = this._eventRegistry["change"] && this._eventRegistry["change"].slice();
    if (this.virtualSelectionMode()) return;
    if (!curOp.lastChange) {
      curOp.lastChange = curOp.change = change;
    } else {
      curOp.lastChange.next = curOp.lastChange = change;
    }
    this.$updateMarkers(delta);
  };
  this.onSelectionChange = function() {
    var curOp = this.curOp = this.curOp || {};
    if (!curOp.cursorActivityHandlers)
      curOp.cursorActivityHandlers = this._eventRegistry["cursorActivity"] && this._eventRegistry["cursorActivity"].slice();
    this.curOp.cursorActivity = true;
    if (this.ace.inMultiSelectMode) {
      this.ace.keyBinding.removeKeyboardHandler(multiSelectCommands.keyboardHandler);
    }
  };
  this.operation = function(fn, force) {
    if (!force && this.curOp || force && this.curOp && this.curOp.force) {
      return fn();
    }
    if (force || !this.ace.curOp) {
      if (this.curOp)
        this.onBeforeEndOperation();
    }
    if (!this.ace.curOp) {
      var prevOp = this.ace.prevOp;
      this.ace.startOperation({
        command: { name: "vim",  scrollIntoView: "cursor" }
      });
    }
    var curOp = this.curOp = this.curOp || {};
    this.curOp.force = force;
    var result = fn();
    if (this.ace.curOp && this.ace.curOp.command.name == "vim") {
      this.ace.endOperation();
      if (!curOp.cursorActivity && !curOp.lastChange && prevOp)
        this.ace.prevOp = prevOp;
    }
    if (force || !this.ace.curOp) {
      if (this.curOp)
        this.onBeforeEndOperation();
    }
    return result;
  };
  this.onBeforeEndOperation = function() {
    var op = this.curOp;
    if (op) {
      if (op.change) { this.signal("change", op.change, op); }
      if (op && op.cursorActivity) { this.signal("cursorActivity", null, op); }
      this.curOp = null;
    }
  };

  this.signal = function(eventName, e, handlers) {
    var listeners = handlers ? handlers[eventName + "Handlers"]
        : (this._eventRegistry || {})[eventName];
    if (!listeners)
        return;
    listeners = listeners.slice();
    for (var i=0; i<listeners.length; i++)
        listeners[i](this, e);
  };
  this.firstLine = function() { return 0; };
  this.lastLine = function() { return this.ace.session.getLength() - 1; };
  this.lineCount = function() { return this.ace.session.getLength(); };
  this.setCursor = function(line, ch) {
    if (typeof line === 'object') {
      ch = line.ch;
      line = line.line;
    }
    if (!this.ace.inVirtualSelectionMode)
      this.ace.exitMultiSelectMode();
    this.ace.session.unfold({row: line, column: ch});
    this.ace.selection.moveTo(line, ch);
  };
  this.getCursor = function(p) {
    var sel = this.ace.selection;
    var pos = p == 'anchor' ? (sel.isEmpty() ? sel.lead : sel.anchor) :
        p == 'head' || !p ? sel.lead : sel.getRange()[p];
    return toCmPos(pos);
  };
  this.listSelections = function(p) {
    var ranges = this.ace.multiSelect.rangeList.ranges;
    if (!ranges.length || this.ace.inVirtualSelectionMode)
      return [{anchor: this.getCursor('anchor'), head: this.getCursor('head')}];
    return ranges.map(function(r) {
      return {
        anchor: this.clipPos(toCmPos(r.cursor == r.end ? r.start : r.end)),
        head: this.clipPos(toCmPos(r.cursor))
      };
    }, this);
  };
  this.setSelections = function(p, primIndex) {
    var sel = this.ace.multiSelect;
    var ranges = p.map(function(x) {
      var anchor = toAcePos(x.anchor);
      var head = toAcePos(x.head);
      var r = Range.comparePoints(anchor, head) < 0
        ? new Range.fromPoints(anchor, head)
        : new Range.fromPoints(head, anchor);
      r.cursor = Range.comparePoints(r.start, head) ? r.end : r.start;
      return r;
    });
    
    if (this.ace.inVirtualSelectionMode) {
      this.ace.selection.fromOrientedRange(ranges[0]);
      return;
    }
    if (!primIndex) {
        ranges = ranges.reverse();
    } else if (ranges[primIndex]) {
       ranges.push(ranges.splice(primIndex, 1)[0]);
    }
    sel.toSingleRange(ranges[0].clone());
    var session = this.ace.session;
    for (var i = 0; i < ranges.length; i++) {
      var range = session.$clipRangeToDocument(ranges[i]); // todo why ace doesn't do this?
      sel.addRange(range);
    }
  };
  this.setSelection = function(a, h, options) {
    var sel = this.ace.selection;
    sel.moveTo(a.line, a.ch);
    sel.selectTo(h.line, h.ch);
    if (options && options.origin == '*mouse') {
      this.onBeforeEndOperation();
    }
  };
  this.somethingSelected = function(p) {
    return !this.ace.selection.isEmpty();
  };
  this.clipPos = function(p) {
    var pos = this.ace.session.$clipPositionToDocument(p.line, p.ch);
    return toCmPos(pos);
  };
  this.markText = function(cursor) {
    return {clear: function() {}, find: function() {}};
  };
  this.$updateMarkers = function(delta) {
    var isInsert = delta.action == "insert";
    var start = delta.start;
    var end = delta.end;
    var rowShift = (end.row - start.row) * (isInsert ? 1 : -1);
    var colShift = (end.column - start.column) * (isInsert ? 1 : -1);
    if (isInsert) end = start;
    
    for (var i in this.marks) {
      var point = this.marks[i];
      var cmp = Range.comparePoints(point, start);
      if (cmp < 0) {
        continue; // delta starts after the range
      }
      if (cmp === 0) {
        if (isInsert) {
          if (point.bias == 1) {
            cmp = 1;
          } else {
            point.bias == -1;
            continue;
          }
        }
      }
      var cmp2 = isInsert ? cmp : Range.comparePoints(point, end);
      if (cmp2 > 0) {
        point.row += rowShift;
        point.column += point.row == end.row ? colShift : 0;
        continue;
      }
      if (!isInsert && cmp2 <= 0) {
        point.row = start.row;
        point.column = start.column;
        if (cmp2 === 0)
          point.bias = 1;
      }
    }
  };
  var Marker = function(cm, id, row, column) {
    this.cm = cm;
    this.id = id;
    this.row = row;
    this.column = column;
    cm.marks[this.id] = this;
  };
  Marker.prototype.clear = function() { delete this.cm.marks[this.id] };
  Marker.prototype.find = function() { return toCmPos(this) };
  this.setBookmark = function(cursor, options) {
    var bm = new Marker(this, this.$uid++, cursor.line, cursor.ch);
    if (!options || !options.insertLeft)
      bm.$insertRight = true;
    this.marks[bm.id] = bm;
    return bm;
  };
  this.moveH = function(increment, unit) {
    if (unit == 'char') {
      var sel = this.ace.selection;
      sel.clearSelection();
      sel.moveCursorBy(0, increment);
    }
  };
  this.findPosV = function(start, amount, unit, goalColumn) {
    if (unit == 'page') {
      var renderer = this.ace.renderer;
      var config = renderer.layerConfig;
      amount = amount * Math.floor(config.height / config.lineHeight);
      unit = 'line';
    }
    if (unit == 'line') {
      var screenPos = this.ace.session.documentToScreenPosition(start.line, start.ch);
      if (goalColumn != null)
        screenPos.column = goalColumn;
      screenPos.row += amount;
      screenPos.row = Math.min(Math.max(0, screenPos.row), this.ace.session.getScreenLength() - 1);
      var pos = this.ace.session.screenToDocumentPosition(screenPos.row, screenPos.column);
      return toCmPos(pos);
    } else {
      debugger;
    }
  };
  this.charCoords = function(pos, mode) {
    if (mode == 'div' || !mode) {
      var sc = this.ace.session.documentToScreenPosition(pos.line, pos.ch);
      return {left: sc.column, top: sc.row};
    }if (mode == 'local') {
      var renderer = this.ace.renderer;
      var sc = this.ace.session.documentToScreenPosition(pos.line, pos.ch);
      var lh = renderer.layerConfig.lineHeight;
      var cw = renderer.layerConfig.characterWidth;
      var top = lh * sc.row;
      return {left: sc.column * cw, top: top, bottom: top + lh};
    }
  };
  this.coordsChar = function(pos, mode) {
    var renderer = this.ace.renderer;
    if (mode == 'local') {
      var row = Math.max(0, Math.floor(pos.top / renderer.lineHeight));
      var col = Math.max(0, Math.floor(pos.left / renderer.characterWidth));
      var ch = renderer.session.screenToDocumentPosition(row, col);
      return toCmPos(ch);
    } else if (mode == 'div') {
      throw "not implemented";
    }
  };
  this.getSearchCursor = function(query, pos, caseFold) {
    var caseSensitive = false;
    var isRegexp = false;
    if (query instanceof RegExp && !query.global) {
      caseSensitive = !query.ignoreCase;
      query = query.source;
      isRegexp = true;
    }
    var search = new Search();
    if (pos.ch == undefined) pos.ch = Number.MAX_VALUE;
    var acePos = {row: pos.line, column: pos.ch};
    var cm = this;
    var last = null;
    return {
      findNext: function() { return this.find(false) },
      findPrevious: function() {return this.find(true) },
      find: function(back) {
        search.setOptions({
          needle: query,
          caseSensitive: caseSensitive,
          wrap: false,
          backwards: back,
          regExp: isRegexp,
          start: last || acePos
        });
        var range = search.find(cm.ace.session);
        if (range && range.isEmpty()) {
          if (cm.getLine(range.start.row).length == range.start.column) {
            search.$options.start = range;
            range = search.find(cm.ace.session);
          }
        }
        last = range;
        return last;
      },
      from: function() { return last && toCmPos(last.start) },
      to: function() { return last && toCmPos(last.end) },
      replace: function(text) {
        if (last) {
          last.end = cm.ace.session.doc.replace(last, text);
        }
      }
    };
  };
  this.scrollTo = function(x, y) {
    var renderer = this.ace.renderer;
    var config = renderer.layerConfig;
    var maxHeight = config.maxHeight;
    maxHeight -= (renderer.$size.scrollerHeight - renderer.lineHeight) * renderer.$scrollPastEnd;
    if (y != null) this.ace.session.setScrollTop(Math.max(0, Math.min(y, maxHeight)));
    if (x != null) this.ace.session.setScrollLeft(Math.max(0, Math.min(x, config.width)));
  };
  this.scrollInfo = function() { return 0; };
  this.scrollIntoView = function(pos, margin) {
    if (pos) {
      var renderer = this.ace.renderer;
      var viewMargin = { "top": 0, "bottom": margin };
      renderer.scrollCursorIntoView(toAcePos(pos),
        (renderer.lineHeight * 2) / renderer.$size.scrollerHeight, viewMargin);
    }
  };
  this.getLine = function(row) { return this.ace.session.getLine(row) };
  this.getRange = function(s, e) {
    return this.ace.session.getTextRange(new Range(s.line, s.ch, e.line, e.ch));
  };
  this.replaceRange = function(text, s, e) {
    if (!e) e = s;
    return this.ace.session.replace(new Range(s.line, s.ch, e.line, e.ch), text);
  };
  this.replaceSelections = function(p) {
    var sel = this.ace.selection;
    if (this.ace.inVirtualSelectionMode) {
      this.ace.session.replace(sel.getRange(), p[0] || "");
      return;
    }
    sel.inVirtualSelectionMode = true;
    var ranges = sel.rangeList.ranges;
    if (!ranges.length) ranges = [this.ace.multiSelect.getRange()];
    for (var i = ranges.length; i--;)
       this.ace.session.replace(ranges[i], p[i] || "");
    sel.inVirtualSelectionMode = false;
  };
  this.getSelection = function() {
    return this.ace.getSelectedText();
  };
  this.getSelections = function() {
    return this.listSelections().map(function(x) {
      return this.getRange(x.anchor, x.head);
    }, this);
  };
  this.getInputField = function() {
    return this.ace.textInput.getElement();
  };
  this.getWrapperElement = function() {
    return this.ace.containter;
  };
  var optMap = {
    indentWithTabs: "useSoftTabs",
    indentUnit: "tabSize",
    tabSize: "tabSize",
    firstLineNumber: "firstLineNumber",
    readOnly: "readOnly"
  };
  this.setOption = function(name, val) {
    this.state[name] = val;
    switch (name) {
      case 'indentWithTabs':
        name = optMap[name];
        val = !val;
      break;
      default:
        name = optMap[name];
    }
    if (name)
      this.ace.setOption(name, val);
  };
  this.getOption = function(name, val) {
    var aceOpt = optMap[name];
    if (aceOpt)
      val = this.ace.getOption(aceOpt);
    switch (name) {
      case 'indentWithTabs':
        name = optMap[name];
        return !val;
    }
    return aceOpt ? val : this.state[name];
  };
  this.toggleOverwrite = function(on) {
    this.state.overwrite = on;
    return this.ace.setOverwrite(on);
  };
  this.addOverlay = function(o) {
    if (!this.$searchHighlight || !this.$searchHighlight.session) {
      var highlight = new SearchHighlight(null, "ace_highlight-marker", "text");
      var marker = this.ace.session.addDynamicMarker(highlight);
      highlight.id = marker.id;
      highlight.session = this.ace.session;
      highlight.destroy = function(o) {
        highlight.session.off("change", highlight.updateOnChange);
        highlight.session.off("changeEditor", highlight.destroy);
        highlight.session.removeMarker(highlight.id);
        highlight.session = null;
      };
      highlight.updateOnChange = function(delta) {
        var row = delta.start.row;
        if (row == delta.end.row) highlight.cache[row] = undefined;
        else highlight.cache.splice(row, highlight.cache.length);
      };
      highlight.session.on("changeEditor", highlight.destroy);
      highlight.session.on("change", highlight.updateOnChange);
    }
    var re = new RegExp(o.query.source, "gmi");
    this.$searchHighlight = o.highlight = highlight;
    this.$searchHighlight.setRegexp(re);
    this.ace.renderer.updateBackMarkers();
  };
  this.removeOverlay = function(o) {
    if (this.$searchHighlight && this.$searchHighlight.session) {
      this.$searchHighlight.destroy();
    }
  };
  this.getScrollInfo = function() {
    var renderer = this.ace.renderer;
    var config = renderer.layerConfig;
    return {
      left: renderer.scrollLeft,
      top: renderer.scrollTop,
      height: config.maxHeight,
      width: config.width,
      clientHeight: config.height,
      clientWidth: config.width
    };
  };
  this.getValue = function() {
    return this.ace.getValue();
  };
  this.setValue = function(v) {
    return this.ace.setValue(v);
  };
  this.getTokenTypeAt = function(pos) {
    var token = this.ace.session.getTokenAt(pos.line, pos.ch);
    return token && /comment|string/.test(token.type) ? "string" : "";
  };
  this.findMatchingBracket = function(pos) {
    var m = this.ace.session.findMatchingBracket(toAcePos(pos));
    return {to: m && toCmPos(m)};
  };
  this.indentLine = function(line, method) {
    if (method === true)
        this.ace.session.indentRows(line, line, "\t");
    else if (method === false)
        this.ace.session.outdentRows(new Range(line, 0, line, 0));
  };
  this.indexFromPos = function(pos) {
    return this.ace.session.doc.positionToIndex(toAcePos(pos));
  };
  this.posFromIndex = function(index) {
    return toCmPos(this.ace.session.doc.indexToPosition(index));
  };
  this.focus = function(index) {
    return this.ace.focus();
  };
  this.blur = function(index) {
    return this.ace.blur();
  };
  this.defaultTextHeight = function(index) {
    return this.ace.renderer.layerConfig.lineHeight;
  };
  this.scanForBracket = function(pos, dir, _, options) {
    var re = options.bracketRegex.source;
    if (dir == 1) {
      var m = this.ace.session.$findClosingBracket(re.slice(1, 2), toAcePos(pos), /paren|text/);
    } else {
      var m = this.ace.session.$findOpeningBracket(re.slice(-2, -1), {row: pos.line, column: pos.ch + 1}, /paren|text/);
    }
    return m && {pos: toCmPos(m)};
  };
  this.refresh = function() {
    return this.ace.resize(true);
  };
  this.getMode = function() {
    return { name : this.getOption("mode") };
  }
}).call(CodeMirror.prototype);
  function toAcePos(cmPos) {
    return {row: cmPos.line, column: cmPos.ch};
  }
  function toCmPos(acePos) {
    return new Pos(acePos.row, acePos.column);
  }

  var StringStream = CodeMirror.StringStream = function(string, tabSize) {
    this.pos = this.start = 0;
    this.string = string;
    this.tabSize = tabSize || 8;
    this.lastColumnPos = this.lastColumnValue = 0;
    this.lineStart = 0;
  };

  StringStream.prototype = {
    eol: function() {return this.pos >= this.string.length;},
    sol: function() {return this.pos == this.lineStart;},
    peek: function() {return this.string.charAt(this.pos) || undefined;},
    next: function() {
      if (this.pos < this.string.length)
        return this.string.charAt(this.pos++);
    },
    eat: function(match) {
      var ch = this.string.charAt(this.pos);
      if (typeof match == "string") var ok = ch == match;
      else var ok = ch && (match.test ? match.test(ch) : match(ch));
      if (ok) {++this.pos; return ch;}
    },
    eatWhile: function(match) {
      var start = this.pos;
      while (this.eat(match)){}
      return this.pos > start;
    },
    eatSpace: function() {
      var start = this.pos;
      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
      return this.pos > start;
    },
    skipToEnd: function() {this.pos = this.string.length;},
    skipTo: function(ch) {
      var found = this.string.indexOf(ch, this.pos);
      if (found > -1) {this.pos = found; return true;}
    },
    backUp: function(n) {this.pos -= n;},
    column: function() {
      throw "not implemented";
    },
    indentation: function() {
      throw "not implemented";
    },
    match: function(pattern, consume, caseInsensitive) {
      if (typeof pattern == "string") {
        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
        var substr = this.string.substr(this.pos, pattern.length);
        if (cased(substr) == cased(pattern)) {
          if (consume !== false) this.pos += pattern.length;
          return true;
        }
      } else {
        var match = this.string.slice(this.pos).match(pattern);
        if (match && match.index > 0) return null;
        if (match && consume !== false) this.pos += match[0].length;
        return match;
      }
    },
    current: function(){return this.string.slice(this.start, this.pos);},
    hideFirstChars: function(n, inner) {
      this.lineStart += n;
      try { return inner(); }
      finally { this.lineStart -= n; }
    }
  };
CodeMirror.defineExtension = function(name, fn) {
  CodeMirror.prototype[name] = fn;
};
dom.importCssString(".normal-mode .ace_cursor{\
  border: 1px solid red;\
  background-color: red;\
  opacity: 0.5;\
}\
.normal-mode .ace_hidden-cursors .ace_cursor{\
  background-color: transparent;\
}\
.ace_dialog {\
  position: absolute;\
  left: 0; right: 0;\
  background: white;\
  z-index: 15;\
  padding: .1em .8em;\
  overflow: hidden;\
  color: #333;\
}\
.ace_dialog-top {\
  border-bottom: 1px solid #eee;\
  top: 0;\
}\
.ace_dialog-bottom {\
  border-top: 1px solid #eee;\
  bottom: 0;\
}\
.ace_dialog input {\
  border: none;\
  outline: none;\
  background: transparent;\
  width: 20em;\
  color: inherit;\
  font-family: monospace;\
}", "vimMode");
(function() {
  function dialogDiv(cm, template, bottom) {
    var wrap = cm.ace.container;
    var dialog;
    dialog = wrap.appendChild(document.createElement("div"));
    if (bottom)
      dialog.className = "ace_dialog ace_dialog-bottom";
    else
      dialog.className = "ace_dialog ace_dialog-top";

    if (typeof template == "string") {
      dialog.innerHTML = template;
    } else { // Assuming it's a detached DOM element.
      dialog.appendChild(template);
    }
    return dialog;
  }

  function closeNotification(cm, newVal) {
    if (cm.state.currentNotificationClose)
      cm.state.currentNotificationClose();
    cm.state.currentNotificationClose = newVal;
  }

  CodeMirror.defineExtension("openDialog", function(template, callback, options) {
    if (this.virtualSelectionMode()) return;
    if (!options) options = {};

    closeNotification(this, null);

    var dialog = dialogDiv(this, template, options.bottom);
    var closed = false, me = this;
    function close(newVal) {
      if (typeof newVal == 'string') {
        inp.value = newVal;
      } else {
        if (closed) return;
        closed = true;
        dialog.parentNode.removeChild(dialog);
        me.focus();

        if (options.onClose) options.onClose(dialog);
      }
    }

    var inp = dialog.getElementsByTagName("input")[0], button;
    if (inp) {
      if (options.value) {
        inp.value = options.value;
        if (options.select !== false) inp.select();
      }

      if (options.onInput)
        CodeMirror.on(inp, "input", function(e) { options.onInput(e, inp.value, close);});
      if (options.onKeyUp)
        CodeMirror.on(inp, "keyup", function(e) {options.onKeyUp(e, inp.value, close);});

      CodeMirror.on(inp, "keydown", function(e) {
        if (options && options.onKeyDown && options.onKeyDown(e, inp.value, close)) { return; }
        if (e.keyCode == 27 || (options.closeOnEnter !== false && e.keyCode == 13)) {
          inp.blur();
          CodeMirror.e_stop(e);
          close();
        }
        if (e.keyCode == 13) callback(inp.value);
      });

      if (options.closeOnBlur !== false) CodeMirror.on(inp, "blur", close);

      inp.focus();
    } else if (button = dialog.getElementsByTagName("button")[0]) {
      CodeMirror.on(button, "click", function() {
        close();
        me.focus();
      });

      if (options.closeOnBlur !== false) CodeMirror.on(button, "blur", close);

      button.focus();
    }
    return close;
  });

  CodeMirror.defineExtension("openNotification", function(template, options) {
    if (this.virtualSelectionMode()) return;
    closeNotification(this, close);
    var dialog = dialogDiv(this, template, options && options.bottom);
    var closed = false, doneTimer;
    var duration = options && typeof options.duration !== "undefined" ? options.duration : 5000;

    function close() {
      if (closed) return;
      closed = true;
      clearTimeout(doneTimer);
      dialog.parentNode.removeChild(dialog);
    }

    CodeMirror.on(dialog, 'click', function(e) {
      CodeMirror.e_preventDefault(e);
      close();
    });

    if (duration)
      doneTimer = setTimeout(close, duration);

    return close;
  });
})();

  
  var defaultKeymap = [
    { keys: '<Left>', type: 'keyToKey', toKeys: 'h' },
    { keys: '<Right>', type: 'keyToKey', toKeys: 'l' },
    { keys: '<Up>', type: 'keyToKey', toKeys: 'k' },
    { keys: '<Down>', type: 'keyToKey', toKeys: 'j' },
    { keys: '<Space>', type: 'keyToKey', toKeys: 'l' },
    { keys: '<BS>', type: 'keyToKey', toKeys: 'h', context: 'normal'},
    { keys: '<C-Space>', type: 'keyToKey', toKeys: 'W' },
    { keys: '<C-BS>', type: 'keyToKey', toKeys: 'B', context: 'normal' },
    { keys: '<S-Space>', type: 'keyToKey', toKeys: 'w' },
    { keys: '<S-BS>', type: 'keyToKey', toKeys: 'b', context: 'normal' },
    { keys: '<C-n>', type: 'keyToKey', toKeys: 'j' },
    { keys: '<C-p>', type: 'keyToKey', toKeys: 'k' },
    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>' },
    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>' },
    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
    { keys: 's', type: 'keyToKey', toKeys: 'cl', context: 'normal' },
    { keys: 's', type: 'keyToKey', toKeys: 'c', context: 'visual'},
    { keys: 'S', type: 'keyToKey', toKeys: 'cc', context: 'normal' },
    { keys: 'S', type: 'keyToKey', toKeys: 'VdO', context: 'visual' },
    { keys: '<Home>', type: 'keyToKey', toKeys: '0' },
    { keys: '<End>', type: 'keyToKey', toKeys: '$' },
    { keys: '<PageUp>', type: 'keyToKey', toKeys: '<C-b>' },
    { keys: '<PageDown>', type: 'keyToKey', toKeys: '<C-f>' },
    { keys: '<CR>', type: 'keyToKey', toKeys: 'j^', context: 'normal' },
    { keys: 'H', type: 'motion', motion: 'moveToTopLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'M', type: 'motion', motion: 'moveToMiddleLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'L', type: 'motion', motion: 'moveToBottomLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'h', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: false }},
    { keys: 'l', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: true }},
    { keys: 'j', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, linewise: true }},
    { keys: 'k', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, linewise: true }},
    { keys: 'gj', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: true }},
    { keys: 'gk', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: false }},
    { keys: 'w', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false }},
    { keys: 'W', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false, bigWord: true }},
    { keys: 'e', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, inclusive: true }},
    { keys: 'E', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, bigWord: true, inclusive: true }},
    { keys: 'b', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }},
    { keys: 'B', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false, bigWord: true }},
    { keys: 'ge', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, inclusive: true }},
    { keys: 'gE', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, bigWord: true, inclusive: true }},
    { keys: '{', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: false, toJumplist: true }},
    { keys: '}', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: true, toJumplist: true }},
    { keys: '<C-f>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: true }},
    { keys: '<C-b>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: false }},
    { keys: '<C-d>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: true, explicitRepeat: true }},
    { keys: '<C-u>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: false, explicitRepeat: true }},
    { keys: 'gg', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: false, explicitRepeat: true, linewise: true, toJumplist: true }},
    { keys: 'G', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: true, explicitRepeat: true, linewise: true, toJumplist: true }},
    { keys: '0', type: 'motion', motion: 'moveToStartOfLine' },
    { keys: '^', type: 'motion', motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: '+', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true }},
    { keys: '-', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, toFirstChar:true }},
    { keys: '_', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true, repeatOffset:-1 }},
    { keys: '$', type: 'motion', motion: 'moveToEol', motionArgs: { inclusive: true }},
    { keys: '%', type: 'motion', motion: 'moveToMatchedSymbol', motionArgs: { inclusive: true, toJumplist: true }},
    { keys: 'f<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: true , inclusive: true }},
    { keys: 'F<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: false }},
    { keys: 't<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: true, inclusive: true }},
    { keys: 'T<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: false }},
    { keys: ';', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: true }},
    { keys: ',', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: false }},
    { keys: '\'<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true, linewise: true}},
    { keys: '`<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true}},
    { keys: ']`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true } },
    { keys: '[`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false } },
    { keys: ']\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true, linewise: true } },
    { keys: '[\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false, linewise: true } },
    { keys: ']p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true, matchIndent: true}},
    { keys: '[p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true, matchIndent: true}},
    { keys: ']<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: true, toJumplist: true}},
    { keys: '[<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: false, toJumplist: true}},
    { keys: '|', type: 'motion', motion: 'moveToColumn'},
    { keys: 'o', type: 'motion', motion: 'moveToOtherHighlightedEnd', context:'visual'},
    { keys: 'O', type: 'motion', motion: 'moveToOtherHighlightedEnd', motionArgs: {sameLine: true}, context:'visual'},
    { keys: 'd', type: 'operator', operator: 'delete' },
    { keys: 'y', type: 'operator', operator: 'yank' },
    { keys: 'c', type: 'operator', operator: 'change' },
    { keys: '>', type: 'operator', operator: 'indent', operatorArgs: { indentRight: true }},
    { keys: '<', type: 'operator', operator: 'indent', operatorArgs: { indentRight: false }},
    { keys: 'g~', type: 'operator', operator: 'changeCase' },
    { keys: 'gu', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, isEdit: true },
    { keys: 'gU', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, isEdit: true },
    { keys: 'n', type: 'motion', motion: 'findNext', motionArgs: { forward: true, toJumplist: true }},
    { keys: 'N', type: 'motion', motion: 'findNext', motionArgs: { forward: false, toJumplist: true }},
    { keys: 'x', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorMotionArgs: { visualLine: false }},
    { keys: 'X', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: false }, operatorMotionArgs: { visualLine: true }},
    { keys: 'D', type: 'operatorMotion', operator: 'delete', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'D', type: 'operator', operator: 'delete', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: 'Y', type: 'operatorMotion', operator: 'yank', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'Y', type: 'operator', operator: 'yank', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: 'C', type: 'operatorMotion', operator: 'change', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'C', type: 'operator', operator: 'change', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: '~', type: 'operatorMotion', operator: 'changeCase', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorArgs: { shouldMoveCursor: true }, context: 'normal'},
    { keys: '~', type: 'operator', operator: 'changeCase', context: 'visual'},
    { keys: '<C-w>', type: 'operatorMotion', operator: 'delete', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }, context: 'insert' },
    { keys: '<C-i>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: true }},
    { keys: '<C-o>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: false }},
    { keys: '<C-e>', type: 'action', action: 'scroll', actionArgs: { forward: true, linewise: true }},
    { keys: '<C-y>', type: 'action', action: 'scroll', actionArgs: { forward: false, linewise: true }},
    { keys: 'a', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'charAfter' }, context: 'normal' },
    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'eol' }, context: 'normal' },
    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'endOfSelectedArea' }, context: 'visual' },
    { keys: 'i', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'inplace' }, context: 'normal' },
    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'firstNonBlank'}, context: 'normal' },
    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'startOfSelectedArea' }, context: 'visual' },
    { keys: 'o', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: true }, context: 'normal' },
    { keys: 'O', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: false }, context: 'normal' },
    { keys: 'v', type: 'action', action: 'toggleVisualMode' },
    { keys: 'V', type: 'action', action: 'toggleVisualMode', actionArgs: { linewise: true }},
    { keys: '<C-v>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
    { keys: '<C-q>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
    { keys: 'gv', type: 'action', action: 'reselectLastSelection' },
    { keys: 'J', type: 'action', action: 'joinLines', isEdit: true },
    { keys: 'p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true }},
    { keys: 'P', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true }},
    { keys: 'r<character>', type: 'action', action: 'replace', isEdit: true },
    { keys: '@<character>', type: 'action', action: 'replayMacro' },
    { keys: 'q<character>', type: 'action', action: 'enterMacroRecordMode' },
    { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }},
    { keys: 'u', type: 'action', action: 'undo', context: 'normal' },
    { keys: 'u', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, context: 'visual', isEdit: true },
    { keys: 'U', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, context: 'visual', isEdit: true },
    { keys: '<C-r>', type: 'action', action: 'redo' },
    { keys: 'm<character>', type: 'action', action: 'setMark' },
    { keys: '"<character>', type: 'action', action: 'setRegister' },
    { keys: 'zz', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }},
    { keys: 'z.', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: 'zt', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }},
    { keys: 'z<CR>', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: 'z-', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }},
    { keys: 'zb', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: '.', type: 'action', action: 'repeatLastEdit' },
    { keys: '<C-a>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: true, backtrack: false}},
    { keys: '<C-x>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: false, backtrack: false}},
    { keys: 'a<character>', type: 'motion', motion: 'textObjectManipulation' },
    { keys: 'i<character>', type: 'motion', motion: 'textObjectManipulation', motionArgs: { textObjectInner: true }},
    { keys: '/', type: 'search', searchArgs: { forward: true, querySrc: 'prompt', toJumplist: true }},
    { keys: '?', type: 'search', searchArgs: { forward: false, querySrc: 'prompt', toJumplist: true }},
    { keys: '*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
    { keys: '#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
    { keys: 'g*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', toJumplist: true }},
    { keys: 'g#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', toJumplist: true }},
    { keys: ':', type: 'ex' }
  ];
  var defaultExCommandMap = [
    { name: 'colorscheme', shortName: 'colo' },
    { name: 'map' },
    { name: 'imap', shortName: 'im' },
    { name: 'nmap', shortName: 'nm' },
    { name: 'vmap', shortName: 'vm' },
    { name: 'unmap' },
    { name: 'write', shortName: 'w' },
    { name: 'undo', shortName: 'u' },
    { name: 'redo', shortName: 'red' },
    { name: 'set', shortName: 'se' },
    { name: 'set', shortName: 'se' },
    { name: 'setlocal', shortName: 'setl' },
    { name: 'setglobal', shortName: 'setg' },
    { name: 'sort', shortName: 'sor' },
    { name: 'substitute', shortName: 's', possiblyAsync: true },
    { name: 'nohlsearch', shortName: 'noh' },
    { name: 'delmarks', shortName: 'delm' },
    { name: 'registers', shortName: 'reg', excludeFromCommandHistory: true },
    { name: 'global', shortName: 'g' }
  ];

  var Pos = CodeMirror.Pos;

  var Vim = function() { return vimApi; } //{
    function enterVimMode(cm) {
      cm.setOption('disableInput', true);
      cm.setOption('showCursorWhenSelecting', false);
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      cm.on('cursorActivity', onCursorActivity);
      maybeInitVimState(cm);
      CodeMirror.on(cm.getInputField(), 'paste', getOnPasteFn(cm));
    }

    function leaveVimMode(cm) {
      cm.setOption('disableInput', false);
      cm.off('cursorActivity', onCursorActivity);
      CodeMirror.off(cm.getInputField(), 'paste', getOnPasteFn(cm));
      cm.state.vim = null;
    }

    function detachVimMap(cm, next) {
      if (this == CodeMirror.keyMap.vim)
        CodeMirror.rmClass(cm.getWrapperElement(), "cm-fat-cursor");

      if (!next || next.attach != attachVimMap)
        leaveVimMode(cm, false);
    }
    function attachVimMap(cm, prev) {
      if (this == CodeMirror.keyMap.vim)
        CodeMirror.addClass(cm.getWrapperElement(), "cm-fat-cursor");

      if (!prev || prev.attach != attachVimMap)
        enterVimMode(cm);
    }
    CodeMirror.defineOption('vimMode', false, function(cm, val, prev) {
      if (val && cm.getOption("keyMap") != "vim")
        cm.setOption("keyMap", "vim");
      else if (!val && prev != CodeMirror.Init && /^vim/.test(cm.getOption("keyMap")))
        cm.setOption("keyMap", "default");
    });

    function cmKey(key, cm) {
      if (!cm) { return undefined; }
      var vimKey = cmKeyToVimKey(key);
      if (!vimKey) {
        return false;
      }
      var cmd = CodeMirror.Vim.findKey(cm, vimKey);
      if (typeof cmd == 'function') {
        CodeMirror.signal(cm, 'vim-keypress', vimKey);
      }
      return cmd;
    }

    var modifiers = {'Shift': 'S', 'Ctrl': 'C', 'Alt': 'A', 'Cmd': 'D', 'Mod': 'A'};
    var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del'};
    function cmKeyToVimKey(key) {
      if (key.charAt(0) == '\'') {
        return key.charAt(1);
      }
      var pieces = key.split(/-(?!$)/);
      var lastPiece = pieces[pieces.length - 1];
      if (pieces.length == 1 && pieces[0].length == 1) {
        return false;
      } else if (pieces.length == 2 && pieces[0] == 'Shift' && lastPiece.length == 1) {
        return false;
      }
      var hasCharacter = false;
      for (var i = 0; i < pieces.length; i++) {
        var piece = pieces[i];
        if (piece in modifiers) { pieces[i] = modifiers[piece]; }
        else { hasCharacter = true; }
        if (piece in specialKeys) { pieces[i] = specialKeys[piece]; }
      }
      if (!hasCharacter) {
        return false;
      }
      if (isUpperCase(lastPiece)) {
        pieces[pieces.length - 1] = lastPiece.toLowerCase();
      }
      return '<' + pieces.join('-') + '>';
    }

    function getOnPasteFn(cm) {
      var vim = cm.state.vim;
      if (!vim.onPasteFn) {
        vim.onPasteFn = function() {
          if (!vim.insertMode) {
            cm.setCursor(offsetCursor(cm.getCursor(), 0, 1));
            actions.enterInsertMode(cm, {}, vim);
          }
        };
      }
      return vim.onPasteFn;
    }

    var numberRegex = /[\d]/;
    var wordCharTest = [CodeMirror.isWordChar, function(ch) {
      return ch && !CodeMirror.isWordChar(ch) && !/\s/.test(ch);
    }], bigWordCharTest = [function(ch) {
      return /\S/.test(ch);
    }];
    function makeKeyRange(start, size) {
      var keys = [];
      for (var i = start; i < start + size; i++) {
        keys.push(String.fromCharCode(i));
      }
      return keys;
    }
    var upperCaseAlphabet = makeKeyRange(65, 26);
    var lowerCaseAlphabet = makeKeyRange(97, 26);
    var numbers = makeKeyRange(48, 10);
    var validMarks = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['<', '>']);
    var validRegisters = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['-', '"', '.', ':', '/']);

    function isLine(cm, line) {
      return line >= cm.firstLine() && line <= cm.lastLine();
    }
    function isLowerCase(k) {
      return (/^[a-z]$/).test(k);
    }
    function isMatchableSymbol(k) {
      return '()[]{}'.indexOf(k) != -1;
    }
    function isNumber(k) {
      return numberRegex.test(k);
    }
    function isUpperCase(k) {
      return (/^[A-Z]$/).test(k);
    }
    function isWhiteSpaceString(k) {
      return (/^\s*$/).test(k);
    }
    function inArray(val, arr) {
      for (var i = 0; i < arr.length; i++) {
        if (arr[i] == val) {
          return true;
        }
      }
      return false;
    }

    var options = {};
    function defineOption(name, defaultValue, type, aliases, callback) {
      if (defaultValue === undefined && !callback) {
        throw Error('defaultValue is acequired unless callback is provided');
      }
      if (!type) { type = 'string'; }
      options[name] = {
        type: type,
        defaultValue: defaultValue,
        callback: callback
      };
      if (aliases) {
        for (var i = 0; i < aliases.length; i++) {
          options[aliases[i]] = options[name];
        }
      }
      if (defaultValue) {
        setOption(name, defaultValue);
      }
    }

    function setOption(name, value, cm, cfg) {
      var option = options[name];
      cfg = cfg || {};
      var scope = cfg.scope;
      if (!option) {
        throw Error('Unknown option: ' + name);
      }
      if (option.type == 'boolean') {
        if (value && value !== true) {
          throw Error('Invalid argument: ' + name + '=' + value);
        } else if (value !== false) {
          value = true;
        }
      }
      if (option.callback) {
        if (scope !== 'local') {
          option.callback(value, undefined);
        }
        if (scope !== 'global' && cm) {
          option.callback(value, cm);
        }
      } else {
        if (scope !== 'local') {
          option.value = option.type == 'boolean' ? !!value : value;
        }
        if (scope !== 'global' && cm) {
          cm.state.vim.options[name] = {value: value};
        }
      }
    }

    function getOption(name, cm, cfg) {
      var option = options[name];
      cfg = cfg || {};
      var scope = cfg.scope;
      if (!option) {
        throw Error('Unknown option: ' + name);
      }
      if (option.callback) {
        var local = cm && option.callback(undefined, cm);
        if (scope !== 'global' && local !== undefined) {
          return local;
        }
        if (scope !== 'local') {
          return option.callback();
        }
        return;
      } else {
        var local = (scope !== 'global') && (cm && cm.state.vim.options[name]);
        return (local || (scope !== 'local') && option || {}).value;
      }
    }

    defineOption('filetype', undefined, 'string', ['ft'], function(name, cm) {
      if (cm === undefined) {
        return;
      }
      if (name === undefined) {
        var mode = cm.getOption('mode');
        return mode == 'null' ? '' : mode;
      } else {
        var mode = name == '' ? 'null' : name;
        cm.setOption('mode', mode);
      }
    });

    var createCircularJumpList = function() {
      var size = 100;
      var pointer = -1;
      var head = 0;
      var tail = 0;
      var buffer = new Array(size);
      function add(cm, oldCur, newCur) {
        var current = pointer % size;
        var curMark = buffer[current];
        function useNextSlot(cursor) {
          var next = ++pointer % size;
          var trashMark = buffer[next];
          if (trashMark) {
            trashMark.clear();
          }
          buffer[next] = cm.setBookmark(cursor);
        }
        if (curMark) {
          var markPos = curMark.find();
          if (markPos && !cursorEqual(markPos, oldCur)) {
            useNextSlot(oldCur);
          }
        } else {
          useNextSlot(oldCur);
        }
        useNextSlot(newCur);
        head = pointer;
        tail = pointer - size + 1;
        if (tail < 0) {
          tail = 0;
        }
      }
      function move(cm, offset) {
        pointer += offset;
        if (pointer > head) {
          pointer = head;
        } else if (pointer < tail) {
          pointer = tail;
        }
        var mark = buffer[(size + pointer) % size];
        if (mark && !mark.find()) {
          var inc = offset > 0 ? 1 : -1;
          var newCur;
          var oldCur = cm.getCursor();
          do {
            pointer += inc;
            mark = buffer[(size + pointer) % size];
            if (mark &&
                (newCur = mark.find()) &&
                !cursorEqual(oldCur, newCur)) {
              break;
            }
          } while (pointer < head && pointer > tail);
        }
        return mark;
      }
      return {
        cachedCursor: undefined, //used for # and * jumps
        add: add,
        move: move
      };
    };
    var createInsertModeChanges = function(c) {
      if (c) {
        return {
          changes: c.changes,
          expectCursorActivityForChange: c.expectCursorActivityForChange
        };
      }
      return {
        changes: [],
        expectCursorActivityForChange: false
      };
    };

    function MacroModeState() {
      this.latestRegister = undefined;
      this.isPlaying = false;
      this.isRecording = false;
      this.replaySearchQueries = [];
      this.onRecordingDone = undefined;
      this.lastInsertModeChanges = createInsertModeChanges();
    }
    MacroModeState.prototype = {
      exitMacroRecordMode: function() {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.onRecordingDone) {
          macroModeState.onRecordingDone(); // close dialog
        }
        macroModeState.onRecordingDone = undefined;
        macroModeState.isRecording = false;
      },
      enterMacroRecordMode: function(cm, registerName) {
        var register =
            vimGlobalState.registerController.getRegister(registerName);
        if (register) {
          register.clear();
          this.latestRegister = registerName;
          if (cm.openDialog) {
            this.onRecordingDone = cm.openDialog(
                '(recording)['+registerName+']', null, {bottom:true});
          }
          this.isRecording = true;
        }
      }
    };

    function maybeInitVimState(cm) {
      if (!cm.state.vim) {
        cm.state.vim = {
          inputState: new InputState(),
          lastEditInputState: undefined,
          lastEditActionCommand: undefined,
          lastHPos: -1,
          lastHSPos: -1,
          lastMotion: null,
          marks: {},
          fakeCursor: null,
          insertMode: false,
          insertModeRepeat: undefined,
          visualMode: false,
          visualLine: false,
          visualBlock: false,
          lastSelection: null,
          lastPastedText: null,
          sel: {},
          options: {}
        };
      }
      return cm.state.vim;
    }
    var vimGlobalState;
    function resetVimGlobalState() {
      vimGlobalState = {
        searchQuery: null,
        searchIsReversed: false,
        lastSubstituteReplacePart: undefined,
        jumpList: createCircularJumpList(),
        macroModeState: new MacroModeState,
        lastChararacterSearch: {increment:0, forward:true, selectedCharacter:''},
        registerController: new RegisterController({}),
        searchHistoryController: new HistoryController({}),
        exCommandHistoryController : new HistoryController({})
      };
      for (var optionName in options) {
        var option = options[optionName];
        option.value = option.defaultValue;
      }
    }

    var lastInsertModeKeyTimer;
    var vimApi= {
      buildKeyMap: function() {
      },
      getRegisterController: function() {
        return vimGlobalState.registerController;
      },
      resetVimGlobalState_: resetVimGlobalState,
      getVimGlobalState_: function() {
        return vimGlobalState;
      },
      maybeInitVimState_: maybeInitVimState,

      suppressErrorLogging: false,

      InsertModeKey: InsertModeKey,
      map: function(lhs, rhs, ctx) {
        exCommandDispatcher.map(lhs, rhs, ctx);
      },
      unmap: function(lhs, ctx) {
        exCommandDispatcher.unmap(lhs, ctx);
      },
      setOption: setOption,
      getOption: getOption,
      defineOption: defineOption,
      defineEx: function(name, prefix, func){
        if (!prefix) {
          prefix = name;
        } else if (name.indexOf(prefix) !== 0) {
          throw new Error('(Vim.defineEx) "'+prefix+'" is not a prefix of "'+name+'", command not registered');
        }
        exCommands[name]=func;
        exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
      },
      handleKey: function (cm, key, origin) {
        var command = this.findKey(cm, key, origin);
        if (typeof command === 'function') {
          return command();
        }
      },
      findKey: function(cm, key, origin) {
        var vim = maybeInitVimState(cm);
        function handleMacroRecording() {
          var macroModeState = vimGlobalState.macroModeState;
          if (macroModeState.isRecording) {
            if (key == 'q') {
              macroModeState.exitMacroRecordMode();
              clearInputState(cm);
              return true;
            }
            if (origin != 'mapping') {
              logKey(macroModeState, key);
            }
          }
        }
        function handleEsc() {
          if (key == '<Esc>') {
            clearInputState(cm);
            if (vim.visualMode) {
              exitVisualMode(cm);
            } else if (vim.insertMode) {
              exitInsertMode(cm);
            }
            return true;
          }
        }
        function doKeyToKey(keys) {
          var match;
          while (keys) {
            match = (/<\w+-.+?>|<\w+>|./).exec(keys);
            key = match[0];
            keys = keys.substring(match.index + key.length);
            CodeMirror.Vim.handleKey(cm, key, 'mapping');
          }
        }

        function handleKeyInsertMode() {
          if (handleEsc()) { return true; }
          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
          var keysAreChars = key.length == 1;
          var match = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
          while (keys.length > 1 && match.type != 'full') {
            var keys = vim.inputState.keyBuffer = keys.slice(1);
            var thisMatch = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
            if (thisMatch.type != 'none') { match = thisMatch; }
          }
          if (match.type == 'none') { clearInputState(cm); return false; }
          else if (match.type == 'partial') {
            if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
            lastInsertModeKeyTimer = window.setTimeout(
              function() { if (vim.insertMode && vim.inputState.keyBuffer) { clearInputState(cm); } },
              getOption('insertModeEscKeysTimeout'));
            return !keysAreChars;
          }

          if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
          if (keysAreChars) {
            var selections = cm.listSelections();
            for (var i = 0; i < selections.length; i++) {
              var here = selections[i].head;
              cm.replaceRange('', offsetCursor(here, 0, -(keys.length - 1)), here, '+input');
            }
            vimGlobalState.macroModeState.lastInsertModeChanges.changes.pop();
          }
          clearInputState(cm);
          return match.command;
        }

        function handleKeyNonInsertMode() {
          if (handleMacroRecording() || handleEsc()) { return true; }

          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
          if (/^[1-9]\d*$/.test(keys)) { return true; }

          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
          if (!keysMatcher) { clearInputState(cm); return false; }
          var context = vim.visualMode ? 'visual' :
                                         'normal';
          var match = commandDispatcher.matchCommand(keysMatcher[2] || keysMatcher[1], defaultKeymap, vim.inputState, context);
          if (match.type == 'none') { clearInputState(cm); return false; }
          else if (match.type == 'partial') { return true; }

          vim.inputState.keyBuffer = '';
          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
          if (keysMatcher[1] && keysMatcher[1] != '0') {
            vim.inputState.pushRepeatDigit(keysMatcher[1]);
          }
          return match.command;
        }

        var command;
        if (vim.insertMode) { command = handleKeyInsertMode(); }
        else { command = handleKeyNonInsertMode(); }
        if (command === false) {
          return undefined;
        } else if (command === true) {
          return function() { return true; };
        } else {
          return function() {
            if ((command.operator || command.isEdit) && cm.getOption('readOnly'))
              return; // ace_patch
            return cm.operation(function() {
              cm.curOp.isVimOp = true;
              try {
                if (command.type == 'keyToKey') {
                  doKeyToKey(command.toKeys);
                } else {
                  commandDispatcher.processCommand(cm, vim, command);
                }
              } catch (e) {
                cm.state.vim = undefined;
                maybeInitVimState(cm);
                if (!CodeMirror.Vim.suppressErrorLogging) {
                  console['log'](e);
                }
                throw e;
              }
              return true;
            });
          };
        }
      },
      handleEx: function(cm, input) {
        exCommandDispatcher.processCommand(cm, input);
      },

      defineMotion: defineMotion,
      defineAction: defineAction,
      defineOperator: defineOperator,
      mapCommand: mapCommand,
      _mapCommand: _mapCommand,

      defineRegister: defineRegister,

      exitVisualMode: exitVisualMode,
      exitInsertMode: exitInsertMode
    };
    function InputState() {
      this.prefixRepeat = [];
      this.motionRepeat = [];

      this.operator = null;
      this.operatorArgs = null;
      this.motion = null;
      this.motionArgs = null;
      this.keyBuffer = []; // For matching multi-key commands.
      this.registerName = null; // Defaults to the unnamed register.
    }
    InputState.prototype.pushRepeatDigit = function(n) {
      if (!this.operator) {
        this.prefixRepeat = this.prefixRepeat.concat(n);
      } else {
        this.motionRepeat = this.motionRepeat.concat(n);
      }
    };
    InputState.prototype.getRepeat = function() {
      var repeat = 0;
      if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
        repeat = 1;
        if (this.prefixRepeat.length > 0) {
          repeat *= parseInt(this.prefixRepeat.join(''), 10);
        }
        if (this.motionRepeat.length > 0) {
          repeat *= parseInt(this.motionRepeat.join(''), 10);
        }
      }
      return repeat;
    };

    function clearInputState(cm, reason) {
      cm.state.vim.inputState = new InputState();
      CodeMirror.signal(cm, 'vim-command-done', reason);
    }
    function Register(text, linewise, blockwise) {
      this.clear();
      this.keyBuffer = [text || ''];
      this.insertModeChanges = [];
      this.searchQueries = [];
      this.linewise = !!linewise;
      this.blockwise = !!blockwise;
    }
    Register.prototype = {
      setText: function(text, linewise, blockwise) {
        this.keyBuffer = [text || ''];
        this.linewise = !!linewise;
        this.blockwise = !!blockwise;
      },
      pushText: function(text, linewise) {
        if (linewise) {
          if (!this.linewise) {
            this.keyBuffer.push('\n');
          }
          this.linewise = true;
        }
        this.keyBuffer.push(text);
      },
      pushInsertModeChanges: function(changes) {
        this.insertModeChanges.push(createInsertModeChanges(changes));
      },
      pushSearchQuery: function(query) {
        this.searchQueries.push(query);
      },
      clear: function() {
        this.keyBuffer = [];
        this.insertModeChanges = [];
        this.searchQueries = [];
        this.linewise = false;
      },
      toString: function() {
        return this.keyBuffer.join('');
      }
    };
    function defineRegister(name, register) {
      var registers = vimGlobalState.registerController.registers[name];
      if (!name || name.length != 1) {
        throw Error('Register name must be 1 character');
      }
      registers[name] = register;
      validRegisters.push(name);
    }
    function RegisterController(registers) {
      this.registers = registers;
      this.unnamedRegister = registers['"'] = new Register();
      registers['.'] = new Register();
      registers[':'] = new Register();
      registers['/'] = new Register();
    }
    RegisterController.prototype = {
      pushText: function(registerName, operator, text, linewise, blockwise) {
        if (linewise && text.charAt(0) == '\n') {
          text = text.slice(1) + '\n';
        }
        if (linewise && text.charAt(text.length - 1) !== '\n'){
          text += '\n';
        }
        var register = this.isValidRegister(registerName) ?
            this.getRegister(registerName) : null;
        if (!register) {
          switch (operator) {
            case 'yank':
              this.registers['0'] = new Register(text, linewise, blockwise);
              break;
            case 'delete':
            case 'change':
              if (text.indexOf('\n') == -1) {
                this.registers['-'] = new Register(text, linewise);
              } else {
                this.shiftNumericRegisters_();
                this.registers['1'] = new Register(text, linewise);
              }
              break;
          }
          this.unnamedRegister.setText(text, linewise, blockwise);
          return;
        }
        var append = isUpperCase(registerName);
        if (append) {
          register.pushText(text, linewise);
        } else {
          register.setText(text, linewise, blockwise);
        }
        this.unnamedRegister.setText(register.toString(), linewise);
      },
      getRegister: function(name) {
        if (!this.isValidRegister(name)) {
          return this.unnamedRegister;
        }
        name = name.toLowerCase();
        if (!this.registers[name]) {
          this.registers[name] = new Register();
        }
        return this.registers[name];
      },
      isValidRegister: function(name) {
        return name && inArray(name, validRegisters);
      },
      shiftNumericRegisters_: function() {
        for (var i = 9; i >= 2; i--) {
          this.registers[i] = this.getRegister('' + (i - 1));
        }
      }
    };
    function HistoryController() {
        this.historyBuffer = [];
        this.iterator;
        this.initialPrefix = null;
    }
    HistoryController.prototype = {
      nextMatch: function (input, up) {
        var historyBuffer = this.historyBuffer;
        var dir = up ? -1 : 1;
        if (this.initialPrefix === null) this.initialPrefix = input;
        for (var i = this.iterator + dir; up ? i >= 0 : i < historyBuffer.length; i+= dir) {
          var element = historyBuffer[i];
          for (var j = 0; j <= element.length; j++) {
            if (this.initialPrefix == element.substring(0, j)) {
              this.iterator = i;
              return element;
            }
          }
        }
        if (i >= historyBuffer.length) {
          this.iterator = historyBuffer.length;
          return this.initialPrefix;
        }
        if (i < 0 ) return input;
      },
      pushInput: function(input) {
        var index = this.historyBuffer.indexOf(input);
        if (index > -1) this.historyBuffer.splice(index, 1);
        if (input.length) this.historyBuffer.push(input);
      },
      reset: function() {
        this.initialPrefix = null;
        this.iterator = this.historyBuffer.length;
      }
    };
    var commandDispatcher = {
      matchCommand: function(keys, keyMap, inputState, context) {
        var matches = commandMatches(keys, keyMap, context, inputState);
        if (!matches.full && !matches.partial) {
          return {type: 'none'};
        } else if (!matches.full && matches.partial) {
          return {type: 'partial'};
        }

        var bestMatch;
        for (var i = 0; i < matches.full.length; i++) {
          var match = matches.full[i];
          if (!bestMatch) {
            bestMatch = match;
          }
        }
        if (bestMatch.keys.slice(-11) == '<character>') {
          var character = lastChar(keys);
          if (/<C-.>/.test(character)) return {type: 'none'};
          inputState.selectedCharacter = character;
        }
        return {type: 'full', command: bestMatch};
      },
      processCommand: function(cm, vim, command) {
        vim.inputState.repeatOverride = command.repeatOverride;
        switch (command.type) {
          case 'motion':
            this.processMotion(cm, vim, command);
            break;
          case 'operator':
            this.processOperator(cm, vim, command);
            break;
          case 'operatorMotion':
            this.processOperatorMotion(cm, vim, command);
            break;
          case 'action':
            this.processAction(cm, vim, command);
            break;
          case 'search':
            this.processSearch(cm, vim, command);
            break;
          case 'ex':
          case 'keyToEx':
            this.processEx(cm, vim, command);
            break;
          default:
            break;
        }
      },
      processMotion: function(cm, vim, command) {
        vim.inputState.motion = command.motion;
        vim.inputState.motionArgs = copyArgs(command.motionArgs);
        this.evalInput(cm, vim);
      },
      processOperator: function(cm, vim, command) {
        var inputState = vim.inputState;
        if (inputState.operator) {
          if (inputState.operator == command.operator) {
            inputState.motion = 'expandToLine';
            inputState.motionArgs = { linewise: true };
            this.evalInput(cm, vim);
            return;
          } else {
            clearInputState(cm);
          }
        }
        inputState.operator = command.operator;
        inputState.operatorArgs = copyArgs(command.operatorArgs);
        if (vim.visualMode) {
          this.evalInput(cm, vim);
        }
      },
      processOperatorMotion: function(cm, vim, command) {
        var visualMode = vim.visualMode;
        var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
        if (operatorMotionArgs) {
          if (visualMode && operatorMotionArgs.visualLine) {
            vim.visualLine = true;
          }
        }
        this.processOperator(cm, vim, command);
        if (!visualMode) {
          this.processMotion(cm, vim, command);
        }
      },
      processAction: function(cm, vim, command) {
        var inputState = vim.inputState;
        var repeat = inputState.getRepeat();
        var repeatIsExplicit = !!repeat;
        var actionArgs = copyArgs(command.actionArgs) || {};
        if (inputState.selectedCharacter) {
          actionArgs.selectedCharacter = inputState.selectedCharacter;
        }
        if (command.operator) {
          this.processOperator(cm, vim, command);
        }
        if (command.motion) {
          this.processMotion(cm, vim, command);
        }
        if (command.motion || command.operator) {
          this.evalInput(cm, vim);
        }
        actionArgs.repeat = repeat || 1;
        actionArgs.repeatIsExplicit = repeatIsExplicit;
        actionArgs.registerName = inputState.registerName;
        clearInputState(cm);
        vim.lastMotion = null;
        if (command.isEdit) {
          this.recordLastEdit(vim, inputState, command);
        }
        actions[command.action](cm, actionArgs, vim);
      },
      processSearch: function(cm, vim, command) {
        if (!cm.getSearchCursor) {
          return;
        }
        var forward = command.searchArgs.forward;
        var wholeWordOnly = command.searchArgs.wholeWordOnly;
        getSearchState(cm).setReversed(!forward);
        var promptPrefix = (forward) ? '/' : '?';
        var originalQuery = getSearchState(cm).getQuery();
        var originalScrollPos = cm.getScrollInfo();
        function handleQuery(query, ignoreCase, smartCase) {
          vimGlobalState.searchHistoryController.pushInput(query);
          vimGlobalState.searchHistoryController.reset();
          try {
            updateSearchQuery(cm, query, ignoreCase, smartCase);
          } catch (e) {
            showConfirm(cm, 'Invalid regex: ' + query);
            clearInputState(cm);
            return;
          }
          commandDispatcher.processMotion(cm, vim, {
            type: 'motion',
            motion: 'findNext',
            motionArgs: { forward: true, toJumplist: command.searchArgs.toJumplist }
          });
        }
        function onPromptClose(query) {
          cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
          handleQuery(query, true /** ignoreCase */, true /** smartCase */);
          var macroModeState = vimGlobalState.macroModeState;
          if (macroModeState.isRecording) {
            logSearchQuery(macroModeState, query);
          }
        }
        function onPromptKeyUp(e, query, close) {
          var keyName = CodeMirror.keyName(e), up;
          if (keyName == 'Up' || keyName == 'Down') {
            up = keyName == 'Up' ? true : false;
            query = vimGlobalState.searchHistoryController.nextMatch(query, up) || '';
            close(query);
          } else {
            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
              vimGlobalState.searchHistoryController.reset();
          }
          var parsedQuery;
          try {
            parsedQuery = updateSearchQuery(cm, query,
                true /** ignoreCase */, true /** smartCase */);
          } catch (e) {
          }
          if (parsedQuery) {
            cm.scrollIntoView(findNext(cm, !forward, parsedQuery), 30);
          } else {
            clearSearchHighlight(cm);
            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
          }
        }
        function onPromptKeyDown(e, query, close) {
          var keyName = CodeMirror.keyName(e);
          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
              (keyName == 'Backspace' && query == '')) {
            vimGlobalState.searchHistoryController.pushInput(query);
            vimGlobalState.searchHistoryController.reset();
            updateSearchQuery(cm, originalQuery);
            clearSearchHighlight(cm);
            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
            CodeMirror.e_stop(e);
            clearInputState(cm);
            close();
            cm.focus();
          } else if (keyName == 'Ctrl-U') {
            CodeMirror.e_stop(e);
            close('');
          }
        }
        switch (command.searchArgs.querySrc) {
          case 'prompt':
            var macroModeState = vimGlobalState.macroModeState;
            if (macroModeState.isPlaying) {
              var query = macroModeState.replaySearchQueries.shift();
              handleQuery(query, true /** ignoreCase */, false /** smartCase */);
            } else {
              showPrompt(cm, {
                  onClose: onPromptClose,
                  prefix: promptPrefix,
                  desc: searchPromptDesc,
                  onKeyUp: onPromptKeyUp,
                  onKeyDown: onPromptKeyDown
              });
            }
            break;
          case 'wordUnderCursor':
            var word = expandWordUnderCursor(cm, false /** inclusive */,
                true /** forward */, false /** bigWord */,
                true /** noSymbol */);
            var isKeyword = true;
            if (!word) {
              word = expandWordUnderCursor(cm, false /** inclusive */,
                  true /** forward */, false /** bigWord */,
                  false /** noSymbol */);
              isKeyword = false;
            }
            if (!word) {
              return;
            }
            var query = cm.getLine(word.start.line).substring(word.start.ch,
                word.end.ch);
            if (isKeyword && wholeWordOnly) {
                query = '\\b' + query + '\\b';
            } else {
              query = escapeRegex(query);
            }
            vimGlobalState.jumpList.cachedCursor = cm.getCursor();
            cm.setCursor(word.start);

            handleQuery(query, true /** ignoreCase */, false /** smartCase */);
            break;
        }
      },
      processEx: function(cm, vim, command) {
        function onPromptClose(input) {
          vimGlobalState.exCommandHistoryController.pushInput(input);
          vimGlobalState.exCommandHistoryController.reset();
          exCommandDispatcher.processCommand(cm, input);
        }
        function onPromptKeyDown(e, input, close) {
          var keyName = CodeMirror.keyName(e), up;
          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
              (keyName == 'Backspace' && input == '')) {
            vimGlobalState.exCommandHistoryController.pushInput(input);
            vimGlobalState.exCommandHistoryController.reset();
            CodeMirror.e_stop(e);
            clearInputState(cm);
            close();
            cm.focus();
          }
          if (keyName == 'Up' || keyName == 'Down') {
            up = keyName == 'Up' ? true : false;
            input = vimGlobalState.exCommandHistoryController.nextMatch(input, up) || '';
            close(input);
          } else if (keyName == 'Ctrl-U') {
            CodeMirror.e_stop(e);
            close('');
          } else {
            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
              vimGlobalState.exCommandHistoryController.reset();
          }
        }
        if (command.type == 'keyToEx') {
          exCommandDispatcher.processCommand(cm, command.exArgs.input);
        } else {
          if (vim.visualMode) {
            showPrompt(cm, { onClose: onPromptClose, prefix: ':', value: '\'<,\'>',
                onKeyDown: onPromptKeyDown});
          } else {
            showPrompt(cm, { onClose: onPromptClose, prefix: ':',
                onKeyDown: onPromptKeyDown});
          }
        }
      },
      evalInput: function(cm, vim) {
        var inputState = vim.inputState;
        var motion = inputState.motion;
        var motionArgs = inputState.motionArgs || {};
        var operator = inputState.operator;
        var operatorArgs = inputState.operatorArgs || {};
        var registerName = inputState.registerName;
        var sel = vim.sel;
        var origHead = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.head): cm.getCursor('head'));
        var origAnchor = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.anchor) : cm.getCursor('anchor'));
        var oldHead = copyCursor(origHead);
        var oldAnchor = copyCursor(origAnchor);
        var newHead, newAnchor;
        var repeat;
        if (operator) {
          this.recordLastEdit(vim, inputState);
        }
        if (inputState.repeatOverride !== undefined) {
          repeat = inputState.repeatOverride;
        } else {
          repeat = inputState.getRepeat();
        }
        if (repeat > 0 && motionArgs.explicitRepeat) {
          motionArgs.repeatIsExplicit = true;
        } else if (motionArgs.noRepeat ||
            (!motionArgs.explicitRepeat && repeat === 0)) {
          repeat = 1;
          motionArgs.repeatIsExplicit = false;
        }
        if (inputState.selectedCharacter) {
          motionArgs.selectedCharacter = operatorArgs.selectedCharacter =
              inputState.selectedCharacter;
        }
        motionArgs.repeat = repeat;
        clearInputState(cm);
        if (motion) {
          var motionResult = motions[motion](cm, origHead, motionArgs, vim);
          vim.lastMotion = motions[motion];
          if (!motionResult) {
            return;
          }
          if (motionArgs.toJumplist) {
            if (!operator && cm.ace.curOp != null)
              cm.ace.curOp.command.scrollIntoView = "center-animate"; // ace_patch
            var jumpList = vimGlobalState.jumpList;
            var cachedCursor = jumpList.cachedCursor;
            if (cachedCursor) {
              recordJumpPosition(cm, cachedCursor, motionResult);
              delete jumpList.cachedCursor;
            } else {
              recordJumpPosition(cm, origHead, motionResult);
            }
          }
          if (motionResult instanceof Array) {
            newAnchor = motionResult[0];
            newHead = motionResult[1];
          } else {
            newHead = motionResult;
          }
          if (!newHead) {
            newHead = copyCursor(origHead);
          }
          if (vim.visualMode) {
            if (!(vim.visualBlock && newHead.ch === Infinity)) {
              newHead = clipCursorToContent(cm, newHead, vim.visualBlock);
            }
            if (newAnchor) {
              newAnchor = clipCursorToContent(cm, newAnchor, true);
            }
            newAnchor = newAnchor || oldAnchor;
            sel.anchor = newAnchor;
            sel.head = newHead;
            updateCmSelection(cm);
            updateMark(cm, vim, '<',
                cursorIsBefore(newAnchor, newHead) ? newAnchor
                    : newHead);
            updateMark(cm, vim, '>',
                cursorIsBefore(newAnchor, newHead) ? newHead
                    : newAnchor);
          } else if (!operator) {
            newHead = clipCursorToContent(cm, newHead);
            cm.setCursor(newHead.line, newHead.ch);
          }
        }
        if (operator) {
          if (operatorArgs.lastSel) {
            newAnchor = oldAnchor;
            var lastSel = operatorArgs.lastSel;
            var lineOffset = Math.abs(lastSel.head.line - lastSel.anchor.line);
            var chOffset = Math.abs(lastSel.head.ch - lastSel.anchor.ch);
            if (lastSel.visualLine) {
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
            } else if (lastSel.visualBlock) {
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch + chOffset);
            } else if (lastSel.head.line == lastSel.anchor.line) {
              newHead = Pos(oldAnchor.line, oldAnchor.ch + chOffset);
            } else {
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
            }
            vim.visualMode = true;
            vim.visualLine = lastSel.visualLine;
            vim.visualBlock = lastSel.visualBlock;
            sel = vim.sel = {
              anchor: newAnchor,
              head: newHead
            };
            updateCmSelection(cm);
          } else if (vim.visualMode) {
            operatorArgs.lastSel = {
              anchor: copyCursor(sel.anchor),
              head: copyCursor(sel.head),
              visualBlock: vim.visualBlock,
              visualLine: vim.visualLine
            };
          }
          var curStart, curEnd, linewise, mode;
          var cmSel;
          if (vim.visualMode) {
            curStart = cursorMin(sel.head, sel.anchor);
            curEnd = cursorMax(sel.head, sel.anchor);
            linewise = vim.visualLine || operatorArgs.linewise;
            mode = vim.visualBlock ? 'block' :
                   linewise ? 'line' :
                   'char';
            cmSel = makeCmSelection(cm, {
              anchor: curStart,
              head: curEnd
            }, mode);
            if (linewise) {
              var ranges = cmSel.ranges;
              if (mode == 'block') {
                for (var i = 0; i < ranges.length; i++) {
                  ranges[i].head.ch = lineLength(cm, ranges[i].head.line);
                }
              } else if (mode == 'line') {
                ranges[0].head = Pos(ranges[0].head.line + 1, 0);
              }
            }
          } else {
            curStart = copyCursor(newAnchor || oldAnchor);
            curEnd = copyCursor(newHead || oldHead);
            if (cursorIsBefore(curEnd, curStart)) {
              var tmp = curStart;
              curStart = curEnd;
              curEnd = tmp;
            }
            linewise = motionArgs.linewise || operatorArgs.linewise;
            if (linewise) {
              expandSelectionToLine(cm, curStart, curEnd);
            } else if (motionArgs.forward) {
              clipToLine(cm, curStart, curEnd);
            }
            mode = 'char';
            var exclusive = !motionArgs.inclusive || linewise;
            cmSel = makeCmSelection(cm, {
              anchor: curStart,
              head: curEnd
            }, mode, exclusive);
          }
          cm.setSelections(cmSel.ranges, cmSel.primary);
          vim.lastMotion = null;
          operatorArgs.repeat = repeat; // For indent in visual mode.
          operatorArgs.registerName = registerName;
          operatorArgs.linewise = linewise;
          var operatorMoveTo = operators[operator](
            cm, operatorArgs, cmSel.ranges, oldAnchor, newHead);
          if (vim.visualMode) {
            exitVisualMode(cm, operatorMoveTo != null);
          }
          if (operatorMoveTo) {
            cm.setCursor(operatorMoveTo);
          }
        }
      },
      recordLastEdit: function(vim, inputState, actionCommand) {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.isPlaying) { return; }
        vim.lastEditInputState = inputState;
        vim.lastEditActionCommand = actionCommand;
        macroModeState.lastInsertModeChanges.changes = [];
        macroModeState.lastInsertModeChanges.expectCursorActivityForChange = false;
      }
    };
    var motions = {
      moveToTopLine: function(cm, _head, motionArgs) {
        var line = getUserVisibleLines(cm).top + motionArgs.repeat -1;
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      moveToMiddleLine: function(cm) {
        var range = getUserVisibleLines(cm);
        var line = Math.floor((range.top + range.bottom) * 0.5);
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      moveToBottomLine: function(cm, _head, motionArgs) {
        var line = getUserVisibleLines(cm).bottom - motionArgs.repeat +1;
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      expandToLine: function(_cm, head, motionArgs) {
        var cur = head;
        return Pos(cur.line + motionArgs.repeat - 1, Infinity);
      },
      findNext: function(cm, _head, motionArgs) {
        var state = getSearchState(cm);
        var query = state.getQuery();
        if (!query) {
          return;
        }
        var prev = !motionArgs.forward;
        prev = (state.isReversed()) ? !prev : prev;
        highlightSearchMatches(cm, query);
        return findNext(cm, prev/** prev */, query, motionArgs.repeat);
      },
      goToMark: function(cm, _head, motionArgs, vim) {
        var mark = vim.marks[motionArgs.selectedCharacter];
        if (mark) {
          var pos = mark.find();
          return motionArgs.linewise ? { line: pos.line, ch: findFirstNonWhiteSpaceCharacter(cm.getLine(pos.line)) } : pos;
        }
        return null;
      },
      moveToOtherHighlightedEnd: function(cm, _head, motionArgs, vim) {
        if (vim.visualBlock && motionArgs.sameLine) {
          var sel = vim.sel;
          return [
            clipCursorToContent(cm, Pos(sel.anchor.line, sel.head.ch)),
            clipCursorToContent(cm, Pos(sel.head.line, sel.anchor.ch))
          ];
        } else {
          return ([vim.sel.head, vim.sel.anchor]);
        }
      },
      jumpToMark: function(cm, head, motionArgs, vim) {
        var best = head;
        for (var i = 0; i < motionArgs.repeat; i++) {
          var cursor = best;
          for (var key in vim.marks) {
            if (!isLowerCase(key)) {
              continue;
            }
            var mark = vim.marks[key].find();
            var isWrongDirection = (motionArgs.forward) ?
              cursorIsBefore(mark, cursor) : cursorIsBefore(cursor, mark);

            if (isWrongDirection) {
              continue;
            }
            if (motionArgs.linewise && (mark.line == cursor.line)) {
              continue;
            }

            var equal = cursorEqual(cursor, best);
            var between = (motionArgs.forward) ?
              cursorIsBetween(cursor, mark, best) :
              cursorIsBetween(best, mark, cursor);

            if (equal || between) {
              best = mark;
            }
          }
        }

        if (motionArgs.linewise) {
          best = Pos(best.line, findFirstNonWhiteSpaceCharacter(cm.getLine(best.line)));
        }
        return best;
      },
      moveByCharacters: function(_cm, head, motionArgs) {
        var cur = head;
        var repeat = motionArgs.repeat;
        var ch = motionArgs.forward ? cur.ch + repeat : cur.ch - repeat;
        return Pos(cur.line, ch);
      },
      moveByLines: function(cm, head, motionArgs, vim) {
        var cur = head;
        var endCh = cur.ch;
        switch (vim.lastMotion) {
          case this.moveByLines:
          case this.moveByDisplayLines:
          case this.moveByScroll:
          case this.moveToColumn:
          case this.moveToEol:
            endCh = vim.lastHPos;
            break;
          default:
            vim.lastHPos = endCh;
        }
        var repeat = motionArgs.repeat+(motionArgs.repeatOffset||0);
        var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
        var first = cm.firstLine();
        var last = cm.lastLine();
        if ((line < first && cur.line == first) ||
            (line > last && cur.line == last)) {
          return;
        }
        var fold = cm.ace.session.getFoldLine(line);
        if (fold) {
          if (motionArgs.forward) {
            if (line > fold.start.row)
              line = fold.end.row + 1;
          } else {
            line = fold.start.row;
          }
        }
        if (motionArgs.toFirstChar){
          endCh=findFirstNonWhiteSpaceCharacter(cm.getLine(line));
          vim.lastHPos = endCh;
        }
        vim.lastHSPos = cm.charCoords(Pos(line, endCh),'div').left;
        return Pos(line, endCh);
      },
      moveByDisplayLines: function(cm, head, motionArgs, vim) {
        var cur = head;
        switch (vim.lastMotion) {
          case this.moveByDisplayLines:
          case this.moveByScroll:
          case this.moveByLines:
          case this.moveToColumn:
          case this.moveToEol:
            break;
          default:
            vim.lastHSPos = cm.charCoords(cur,'div').left;
        }
        var repeat = motionArgs.repeat;
        var res=cm.findPosV(cur,(motionArgs.forward ? repeat : -repeat),'line',vim.lastHSPos);
        if (res.hitSide) {
          if (motionArgs.forward) {
            var lastCharCoords = cm.charCoords(res, 'div');
            var goalCoords = { top: lastCharCoords.top + 8, left: vim.lastHSPos };
            var res = cm.coordsChar(goalCoords, 'div');
          } else {
            var resCoords = cm.charCoords(Pos(cm.firstLine(), 0), 'div');
            resCoords.left = vim.lastHSPos;
            res = cm.coordsChar(resCoords, 'div');
          }
        }
        vim.lastHPos = res.ch;
        return res;
      },
      moveByPage: function(cm, head, motionArgs) {
        var curStart = head;
        var repeat = motionArgs.repeat;
        return cm.findPosV(curStart, (motionArgs.forward ? repeat : -repeat), 'page');
      },
      moveByParagraph: function(cm, head, motionArgs) {
        var dir = motionArgs.forward ? 1 : -1;
        return findParagraph(cm, head, motionArgs.repeat, dir);
      },
      moveByScroll: function(cm, head, motionArgs, vim) {
        var scrollbox = cm.getScrollInfo();
        var curEnd = null;
        var repeat = motionArgs.repeat;
        if (!repeat) {
          repeat = scrollbox.clientHeight / (2 * cm.defaultTextHeight());
        }
        var orig = cm.charCoords(head, 'local');
        motionArgs.repeat = repeat;
        var curEnd = motions.moveByDisplayLines(cm, head, motionArgs, vim);
        if (!curEnd) {
          return null;
        }
        var dest = cm.charCoords(curEnd, 'local');
        cm.scrollTo(null, scrollbox.top + dest.top - orig.top);
        return curEnd;
      },
      moveByWords: function(cm, head, motionArgs) {
        return moveToWord(cm, head, motionArgs.repeat, !!motionArgs.forward,
            !!motionArgs.wordEnd, !!motionArgs.bigWord);
      },
      moveTillCharacter: function(cm, _head, motionArgs) {
        var repeat = motionArgs.repeat;
        var curEnd = moveToCharacter(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter);
        var increment = motionArgs.forward ? -1 : 1;
        recordLastCharacterSearch(increment, motionArgs);
        if (!curEnd) return null;
        curEnd.ch += increment;
        return curEnd;
      },
      moveToCharacter: function(cm, head, motionArgs) {
        var repeat = motionArgs.repeat;
        recordLastCharacterSearch(0, motionArgs);
        return moveToCharacter(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter) || head;
      },
      moveToSymbol: function(cm, head, motionArgs) {
        var repeat = motionArgs.repeat;
        return findSymbol(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter) || head;
      },
      moveToColumn: function(cm, head, motionArgs, vim) {
        var repeat = motionArgs.repeat;
        vim.lastHPos = repeat - 1;
        vim.lastHSPos = cm.charCoords(head,'div').left;
        return moveToColumn(cm, repeat);
      },
      moveToEol: function(cm, head, motionArgs, vim) {
        var cur = head;
        vim.lastHPos = Infinity;
        var retval= Pos(cur.line + motionArgs.repeat - 1, Infinity);
        var end=cm.clipPos(retval);
        end.ch--;
        vim.lastHSPos = cm.charCoords(end,'div').left;
        return retval;
      },
      moveToFirstNonWhiteSpaceCharacter: function(cm, head) {
        var cursor = head;
        return Pos(cursor.line,
                   findFirstNonWhiteSpaceCharacter(cm.getLine(cursor.line)));
      },
      moveToMatchedSymbol: function(cm, head) {
        var cursor = head;
        var line = cursor.line;
        var ch = cursor.ch;
        var lineText = cm.getLine(line);
        var symbol;
        do {
          symbol = lineText.charAt(ch++);
          if (symbol && isMatchableSymbol(symbol)) {
            var style = cm.getTokenTypeAt(Pos(line, ch));
            if (style !== "string" && style !== "comment") {
              break;
            }
          }
        } while (symbol);
        if (symbol) {
          var matched = cm.findMatchingBracket(Pos(line, ch));
          return matched.to;
        } else {
          return cursor;
        }
      },
      moveToStartOfLine: function(_cm, head) {
        return Pos(head.line, 0);
      },
      moveToLineOrEdgeOfDocument: function(cm, _head, motionArgs) {
        var lineNum = motionArgs.forward ? cm.lastLine() : cm.firstLine();
        if (motionArgs.repeatIsExplicit) {
          lineNum = motionArgs.repeat - cm.getOption('firstLineNumber');
        }
        return Pos(lineNum,
                   findFirstNonWhiteSpaceCharacter(cm.getLine(lineNum)));
      },
      textObjectManipulation: function(cm, head, motionArgs, vim) {
        var mirroredPairs = {'(': ')', ')': '(',
                             '{': '}', '}': '{',
                             '[': ']', ']': '['};
        var selfPaired = {'\'': true, '"': true};

        var character = motionArgs.selectedCharacter;
        if (character == 'b') {
          character = '(';
        } else if (character == 'B') {
          character = '{';
        }
        var inclusive = !motionArgs.textObjectInner;

        var tmp;
        if (mirroredPairs[character]) {
          tmp = selectCompanionObject(cm, head, character, inclusive);
        } else if (selfPaired[character]) {
          tmp = findBeginningAndEnd(cm, head, character, inclusive);
        } else if (character === 'W') {
          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
                                                     true /** bigWord */);
        } else if (character === 'w') {
          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
                                                     false /** bigWord */);
        } else if (character === 'p') {
          tmp = findParagraph(cm, head, motionArgs.repeat, 0, inclusive);
          motionArgs.linewise = true;
          if (vim.visualMode) {
            if (!vim.visualLine) { vim.visualLine = true; }
          } else {
            var operatorArgs = vim.inputState.operatorArgs;
            if (operatorArgs) { operatorArgs.linewise = true; }
            tmp.end.line--;
          }
        } else {
          return null;
        }

        if (!cm.state.vim.visualMode) {
          return [tmp.start, tmp.end];
        } else {
          return expandSelection(cm, tmp.start, tmp.end);
        }
      },

      repeatLastCharacterSearch: function(cm, head, motionArgs) {
        var lastSearch = vimGlobalState.lastChararacterSearch;
        var repeat = motionArgs.repeat;
        var forward = motionArgs.forward === lastSearch.forward;
        var increment = (lastSearch.increment ? 1 : 0) * (forward ? -1 : 1);
        cm.moveH(-increment, 'char');
        motionArgs.inclusive = forward ? true : false;
        var curEnd = moveToCharacter(cm, repeat, forward, lastSearch.selectedCharacter);
        if (!curEnd) {
          cm.moveH(increment, 'char');
          return head;
        }
        curEnd.ch += increment;
        return curEnd;
      }
    };

    function defineMotion(name, fn) {
      motions[name] = fn;
    }

    function fillArray(val, times) {
      var arr = [];
      for (var i = 0; i < times; i++) {
        arr.push(val);
      }
      return arr;
    }
    var operators = {
      change: function(cm, args, ranges) {
        var finalHead, text;
        var vim = cm.state.vim;
        vimGlobalState.macroModeState.lastInsertModeChanges.inVisualBlock = vim.visualBlock;
        if (!vim.visualMode) {
          var anchor = ranges[0].anchor,
              head = ranges[0].head;
          text = cm.getRange(anchor, head);
          var lastState = vim.lastEditInputState || {};
          if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
            var match = (/\s+$/).exec(text);
            if (match && lastState.motionArgs && lastState.motionArgs.forward) {
              head = offsetCursor(head, 0, - match[0].length);
              text = text.slice(0, - match[0].length);
            }
          }
          var prevLineEnd = new Pos(anchor.line - 1, Number.MAX_VALUE);
          var wasLastLine = cm.firstLine() == cm.lastLine();
          if (head.line > cm.lastLine() && args.linewise && !wasLastLine) {
            cm.replaceRange('', prevLineEnd, head);
          } else {
            cm.replaceRange('', anchor, head);
          }
          if (args.linewise) {
            if (!wasLastLine) {
              cm.setCursor(prevLineEnd);
              CodeMirror.commands.newlineAndIndent(cm);
            }
            anchor.ch = Number.MAX_VALUE;
          }
          finalHead = anchor;
        } else {
          text = cm.getSelection();
          var replacement = fillArray('', ranges.length);
          cm.replaceSelections(replacement);
          finalHead = cursorMin(ranges[0].head, ranges[0].anchor);
        }
        vimGlobalState.registerController.pushText(
            args.registerName, 'change', text,
            args.linewise, ranges.length > 1);
        actions.enterInsertMode(cm, {head: finalHead}, cm.state.vim);
      },
      'delete': function(cm, args, ranges) {
        var finalHead, text;
        var vim = cm.state.vim;
        if (!vim.visualBlock) {
          var anchor = ranges[0].anchor,
              head = ranges[0].head;
          if (args.linewise &&
              head.line != cm.firstLine() &&
              anchor.line == cm.lastLine() &&
              anchor.line == head.line - 1) {
            if (anchor.line == cm.firstLine()) {
              anchor.ch = 0;
            } else {
              anchor = Pos(anchor.line - 1, lineLength(cm, anchor.line - 1));
            }
          }
          text = cm.getRange(anchor, head);
          cm.replaceRange('', anchor, head);
          finalHead = anchor;
          if (args.linewise) {
            finalHead = motions.moveToFirstNonWhiteSpaceCharacter(cm, anchor);
          }
        } else {
          text = cm.getSelection();
          var replacement = fillArray('', ranges.length);
          cm.replaceSelections(replacement);
          finalHead = ranges[0].anchor;
        }
        vimGlobalState.registerController.pushText(
            args.registerName, 'delete', text,
            args.linewise, vim.visualBlock);
        return clipCursorToContent(cm, finalHead);
      },
      indent: function(cm, args, ranges) {
        var vim = cm.state.vim;
        var startLine = ranges[0].anchor.line;
        var endLine = vim.visualBlock ?
          ranges[ranges.length - 1].anchor.line :
          ranges[0].head.line;
        var repeat = (vim.visualMode) ? args.repeat : 1;
        if (args.linewise) {
          endLine--;
        }
        for (var i = startLine; i <= endLine; i++) {
          for (var j = 0; j < repeat; j++) {
            cm.indentLine(i, args.indentRight);
          }
        }
        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
      },
      changeCase: function(cm, args, ranges, oldAnchor, newHead) {
        var selections = cm.getSelections();
        var swapped = [];
        var toLower = args.toLower;
        for (var j = 0; j < selections.length; j++) {
          var toSwap = selections[j];
          var text = '';
          if (toLower === true) {
            text = toSwap.toLowerCase();
          } else if (toLower === false) {
            text = toSwap.toUpperCase();
          } else {
            for (var i = 0; i < toSwap.length; i++) {
              var character = toSwap.charAt(i);
              text += isUpperCase(character) ? character.toLowerCase() :
                  character.toUpperCase();
            }
          }
          swapped.push(text);
        }
        cm.replaceSelections(swapped);
        if (args.shouldMoveCursor){
          return newHead;
        } else if (!cm.state.vim.visualMode && args.linewise && ranges[0].anchor.line + 1 == ranges[0].head.line) {
          return motions.moveToFirstNonWhiteSpaceCharacter(cm, oldAnchor);
        } else if (args.linewise){
          return oldAnchor;
        } else {
          return cursorMin(ranges[0].anchor, ranges[0].head);
        }
      },
      yank: function(cm, args, ranges, oldAnchor) {
        var vim = cm.state.vim;
        var text = cm.getSelection();
        var endPos = vim.visualMode
          ? cursorMin(vim.sel.anchor, vim.sel.head, ranges[0].head, ranges[0].anchor)
          : oldAnchor;
        vimGlobalState.registerController.pushText(
            args.registerName, 'yank',
            text, args.linewise, vim.visualBlock);
        return endPos;
      }
    };

    function defineOperator(name, fn) {
      operators[name] = fn;
    }

    var actions = {
      jumpListWalk: function(cm, actionArgs, vim) {
        if (vim.visualMode) {
          return;
        }
        var repeat = actionArgs.repeat;
        var forward = actionArgs.forward;
        var jumpList = vimGlobalState.jumpList;

        var mark = jumpList.move(cm, forward ? repeat : -repeat);
        var markPos = mark ? mark.find() : undefined;
        markPos = markPos ? markPos : cm.getCursor();
        cm.setCursor(markPos);
        cm.ace.curOp.command.scrollIntoView = "center-animate"; // ace_patch
      },
      scroll: function(cm, actionArgs, vim) {
        if (vim.visualMode) {
          return;
        }
        var repeat = actionArgs.repeat || 1;
        var lineHeight = cm.defaultTextHeight();
        var top = cm.getScrollInfo().top;
        var delta = lineHeight * repeat;
        var newPos = actionArgs.forward ? top + delta : top - delta;
        var cursor = copyCursor(cm.getCursor());
        var cursorCoords = cm.charCoords(cursor, 'local');
        if (actionArgs.forward) {
          if (newPos > cursorCoords.top) {
             cursor.line += (newPos - cursorCoords.top) / lineHeight;
             cursor.line = Math.ceil(cursor.line);
             cm.setCursor(cursor);
             cursorCoords = cm.charCoords(cursor, 'local');
             cm.scrollTo(null, cursorCoords.top);
          } else {
             cm.scrollTo(null, newPos);
          }
        } else {
          var newBottom = newPos + cm.getScrollInfo().clientHeight;
          if (newBottom < cursorCoords.bottom) {
             cursor.line -= (cursorCoords.bottom - newBottom) / lineHeight;
             cursor.line = Math.floor(cursor.line);
             cm.setCursor(cursor);
             cursorCoords = cm.charCoords(cursor, 'local');
             cm.scrollTo(
                 null, cursorCoords.bottom - cm.getScrollInfo().clientHeight);
          } else {
             cm.scrollTo(null, newPos);
          }
        }
      },
      scrollToCursor: function(cm, actionArgs) {
        var lineNum = cm.getCursor().line;
        var charCoords = cm.charCoords(Pos(lineNum, 0), 'local');
        var height = cm.getScrollInfo().clientHeight;
        var y = charCoords.top;
        var lineHeight = charCoords.bottom - y;
        switch (actionArgs.position) {
          case 'center': y = y - (height / 2) + lineHeight;
            break;
          case 'bottom': y = y - height + lineHeight*1.4;
            break;
          case 'top': y = y + lineHeight*0.4;
            break;
        }
        cm.scrollTo(null, y);
      },
      replayMacro: function(cm, actionArgs, vim) {
        var registerName = actionArgs.selectedCharacter;
        var repeat = actionArgs.repeat;
        var macroModeState = vimGlobalState.macroModeState;
        if (registerName == '@') {
          registerName = macroModeState.latestRegister;
        }
        while(repeat--){
          executeMacroRegister(cm, vim, macroModeState, registerName);
        }
      },
      enterMacroRecordMode: function(cm, actionArgs) {
        var macroModeState = vimGlobalState.macroModeState;
        var registerName = actionArgs.selectedCharacter;
        macroModeState.enterMacroRecordMode(cm, registerName);
      },
      enterInsertMode: function(cm, actionArgs, vim) {
        if (cm.getOption('readOnly')) { return; }
        vim.insertMode = true;
        vim.insertModeRepeat = actionArgs && actionArgs.repeat || 1;
        var insertAt = (actionArgs) ? actionArgs.insertAt : null;
        var sel = vim.sel;
        var head = actionArgs.head || cm.getCursor('head');
        var height = cm.listSelections().length;
        if (insertAt == 'eol') {
          head = Pos(head.line, lineLength(cm, head.line));
        } else if (insertAt == 'charAfter') {
          head = offsetCursor(head, 0, 1);
        } else if (insertAt == 'firstNonBlank') {
          head = motions.moveToFirstNonWhiteSpaceCharacter(cm, head);
        } else if (insertAt == 'startOfSelectedArea') {
          if (!vim.visualBlock) {
            if (sel.head.line < sel.anchor.line) {
              head = sel.head;
            } else {
              head = Pos(sel.anchor.line, 0);
            }
          } else {
            head = Pos(
                Math.min(sel.head.line, sel.anchor.line),
                Math.min(sel.head.ch, sel.anchor.ch));
            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
          }
        } else if (insertAt == 'endOfSelectedArea') {
          if (!vim.visualBlock) {
            if (sel.head.line >= sel.anchor.line) {
              head = offsetCursor(sel.head, 0, 1);
            } else {
              head = Pos(sel.anchor.line, 0);
            }
          } else {
            head = Pos(
                Math.min(sel.head.line, sel.anchor.line),
                Math.max(sel.head.ch + 1, sel.anchor.ch));
            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
          }
        } else if (insertAt == 'inplace') {
          if (vim.visualMode){
            return;
          }
        }
        cm.setOption('keyMap', 'vim-insert');
        cm.setOption('disableInput', false);
        if (actionArgs && actionArgs.replace) {
          cm.toggleOverwrite(true);
          cm.setOption('keyMap', 'vim-replace');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
        } else {
          cm.setOption('keyMap', 'vim-insert');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
        }
        if (!vimGlobalState.macroModeState.isPlaying) {
          cm.on('change', onChange);
          CodeMirror.on(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
        }
        if (vim.visualMode) {
          exitVisualMode(cm);
        }
        selectForInsert(cm, head, height);
      },
      toggleVisualMode: function(cm, actionArgs, vim) {
        var repeat = actionArgs.repeat;
        var anchor = cm.getCursor();
        var head;
        if (!vim.visualMode) {
          vim.visualMode = true;
          vim.visualLine = !!actionArgs.linewise;
          vim.visualBlock = !!actionArgs.blockwise;
          head = clipCursorToContent(
              cm, Pos(anchor.line, anchor.ch + repeat - 1),
              true /** includeLineBreak */);
          vim.sel = {
            anchor: anchor,
            head: head
          };
          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
          updateCmSelection(cm);
          updateMark(cm, vim, '<', cursorMin(anchor, head));
          updateMark(cm, vim, '>', cursorMax(anchor, head));
        } else if (vim.visualLine ^ actionArgs.linewise ||
            vim.visualBlock ^ actionArgs.blockwise) {
          vim.visualLine = !!actionArgs.linewise;
          vim.visualBlock = !!actionArgs.blockwise;
          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
          updateCmSelection(cm);
        } else {
          exitVisualMode(cm);
        }
      },
      reselectLastSelection: function(cm, _actionArgs, vim) {
        var lastSelection = vim.lastSelection;
        if (vim.visualMode) {
          updateLastSelection(cm, vim);
        }
        if (lastSelection) {
          var anchor = lastSelection.anchorMark.find();
          var head = lastSelection.headMark.find();
          if (!anchor || !head) {
            return;
          }
          vim.sel = {
            anchor: anchor,
            head: head
          };
          vim.visualMode = true;
          vim.visualLine = lastSelection.visualLine;
          vim.visualBlock = lastSelection.visualBlock;
          updateCmSelection(cm);
          updateMark(cm, vim, '<', cursorMin(anchor, head));
          updateMark(cm, vim, '>', cursorMax(anchor, head));
          CodeMirror.signal(cm, 'vim-mode-change', {
            mode: 'visual',
            subMode: vim.visualLine ? 'linewise' :
                     vim.visualBlock ? 'blockwise' : ''});
        }
      },
      joinLines: function(cm, actionArgs, vim) {
        var curStart, curEnd;
        if (vim.visualMode) {
          curStart = cm.getCursor('anchor');
          curEnd = cm.getCursor('head');
          if (cursorIsBefore(curEnd, curStart)) {
            var tmp = curEnd;
            curEnd = curStart;
            curStart = tmp;
          }
          curEnd.ch = lineLength(cm, curEnd.line) - 1;
        } else {
          var repeat = Math.max(actionArgs.repeat, 2);
          curStart = cm.getCursor();
          curEnd = clipCursorToContent(cm, Pos(curStart.line + repeat - 1,
                                               Infinity));
        }
        var finalCh = 0;
        for (var i = curStart.line; i < curEnd.line; i++) {
          finalCh = lineLength(cm, curStart.line);
          var tmp = Pos(curStart.line + 1,
                        lineLength(cm, curStart.line + 1));
          var text = cm.getRange(curStart, tmp);
          text = text.replace(/\n\s*/g, ' ');
          cm.replaceRange(text, curStart, tmp);
        }
        var curFinalPos = Pos(curStart.line, finalCh);
        if (vim.visualMode) {
          exitVisualMode(cm, false);
        }
        cm.setCursor(curFinalPos);
      },
      newLineAndEnterInsertMode: function(cm, actionArgs, vim) {
        vim.insertMode = true;
        var insertAt = copyCursor(cm.getCursor());
        if (insertAt.line === cm.firstLine() && !actionArgs.after) {
          cm.replaceRange('\n', Pos(cm.firstLine(), 0));
          cm.setCursor(cm.firstLine(), 0);
        } else {
          insertAt.line = (actionArgs.after) ? insertAt.line :
              insertAt.line - 1;
          insertAt.ch = lineLength(cm, insertAt.line);
          cm.setCursor(insertAt);
          var newlineFn = CodeMirror.commands.newlineAndIndentContinueComment ||
              CodeMirror.commands.newlineAndIndent;
          newlineFn(cm);
        }
        this.enterInsertMode(cm, { repeat: actionArgs.repeat }, vim);
      },
      paste: function(cm, actionArgs, vim) {
        var cur = copyCursor(cm.getCursor());
        var register = vimGlobalState.registerController.getRegister(
            actionArgs.registerName);
        var text = register.toString();
        if (!text) {
          return;
        }
        if (actionArgs.matchIndent) {
          var tabSize = cm.getOption("tabSize");
          var whitespaceLength = function(str) {
            var tabs = (str.split("\t").length - 1);
            var spaces = (str.split(" ").length - 1);
            return tabs * tabSize + spaces * 1;
          };
          var currentLine = cm.getLine(cm.getCursor().line);
          var indent = whitespaceLength(currentLine.match(/^\s*/)[0]);
          var chompedText = text.replace(/\n$/, '');
          var wasChomped = text !== chompedText;
          var firstIndent = whitespaceLength(text.match(/^\s*/)[0]);
          var text = chompedText.replace(/^\s*/gm, function(wspace) {
            var newIndent = indent + (whitespaceLength(wspace) - firstIndent);
            if (newIndent < 0) {
              return "";
            }
            else if (cm.getOption("indentWithTabs")) {
              var quotient = Math.floor(newIndent / tabSize);
              return Array(quotient + 1).join('\t');
            }
            else {
              return Array(newIndent + 1).join(' ');
            }
          });
          text += wasChomped ? "\n" : "";
        }
        if (actionArgs.repeat > 1) {
          var text = Array(actionArgs.repeat + 1).join(text);
        }
        var linewise = register.linewise;
        var blockwise = register.blockwise;
        if (linewise && !blockwise) {
          if(vim.visualMode) {
            text = vim.visualLine ? text.slice(0, -1) : '\n' + text.slice(0, text.length - 1) + '\n';
          } else if (actionArgs.after) {
            text = '\n' + text.slice(0, text.length - 1);
            cur.ch = lineLength(cm, cur.line);
          } else {
            cur.ch = 0;
          }
        } else {
          if (blockwise) {
            text = text.split('\n');
            for (var i = 0; i < text.length; i++) {
              text[i] = (text[i] == '') ? ' ' : text[i];
            }
          }
          cur.ch += actionArgs.after ? 1 : 0;
        }
        var curPosFinal;
        var idx;
        if (vim.visualMode) {
          vim.lastPastedText = text;
          var lastSelectionCurEnd;
          var selectedArea = getSelectedAreaRange(cm, vim);
          var selectionStart = selectedArea[0];
          var selectionEnd = selectedArea[1];
          var selectedText = cm.getSelection();
          var selections = cm.listSelections();
          var emptyStrings = new Array(selections.length).join('1').split('1');
          if (vim.lastSelection) {
            lastSelectionCurEnd = vim.lastSelection.headMark.find();
          }
          vimGlobalState.registerController.unnamedRegister.setText(selectedText);
          if (blockwise) {
            cm.replaceSelections(emptyStrings);
            selectionEnd = Pos(selectionStart.line + text.length-1, selectionStart.ch);
            cm.setCursor(selectionStart);
            selectBlock(cm, selectionEnd);
            cm.replaceSelections(text);
            curPosFinal = selectionStart;
          } else if (vim.visualBlock) {
            cm.replaceSelections(emptyStrings);
            cm.setCursor(selectionStart);
            cm.replaceRange(text, selectionStart, selectionStart);
            curPosFinal = selectionStart;
          } else {
            cm.replaceRange(text, selectionStart, selectionEnd);
            curPosFinal = cm.posFromIndex(cm.indexFromPos(selectionStart) + text.length - 1);
          }
          if(lastSelectionCurEnd) {
            vim.lastSelection.headMark = cm.setBookmark(lastSelectionCurEnd);
          }
          if (linewise) {
            curPosFinal.ch=0;
          }
        } else {
          if (blockwise) {
            cm.setCursor(cur);
            for (var i = 0; i < text.length; i++) {
              var line = cur.line+i;
              if (line > cm.lastLine()) {
                cm.replaceRange('\n',  Pos(line, 0));
              }
              var lastCh = lineLength(cm, line);
              if (lastCh < cur.ch) {
                extendLineToColumn(cm, line, cur.ch);
              }
            }
            cm.setCursor(cur);
            selectBlock(cm, Pos(cur.line + text.length-1, cur.ch));
            cm.replaceSelections(text);
            curPosFinal = cur;
          } else {
            cm.replaceRange(text, cur);
            if (linewise && actionArgs.after) {
              curPosFinal = Pos(
              cur.line + 1,
              findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line + 1)));
            } else if (linewise && !actionArgs.after) {
              curPosFinal = Pos(
                cur.line,
                findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line)));
            } else if (!linewise && actionArgs.after) {
              idx = cm.indexFromPos(cur);
              curPosFinal = cm.posFromIndex(idx + text.length - 1);
            } else {
              idx = cm.indexFromPos(cur);
              curPosFinal = cm.posFromIndex(idx + text.length);
            }
          }
        }
        if (vim.visualMode) {
          exitVisualMode(cm, false);
        }
        cm.setCursor(curPosFinal);
      },
      undo: function(cm, actionArgs) {
        cm.operation(function() {
          repeatFn(cm, CodeMirror.commands.undo, actionArgs.repeat)();
          cm.setCursor(cm.getCursor('anchor'));
        });
      },
      redo: function(cm, actionArgs) {
        repeatFn(cm, CodeMirror.commands.redo, actionArgs.repeat)();
      },
      setRegister: function(_cm, actionArgs, vim) {
        vim.inputState.registerName = actionArgs.selectedCharacter;
      },
      setMark: function(cm, actionArgs, vim) {
        var markName = actionArgs.selectedCharacter;
        updateMark(cm, vim, markName, cm.getCursor());
      },
      replace: function(cm, actionArgs, vim) {
        var replaceWith = actionArgs.selectedCharacter;
        var curStart = cm.getCursor();
        var replaceTo;
        var curEnd;
        var selections = cm.listSelections();
        if (vim.visualMode) {
          curStart = cm.getCursor('start');
          curEnd = cm.getCursor('end');
        } else {
          var line = cm.getLine(curStart.line);
          replaceTo = curStart.ch + actionArgs.repeat;
          if (replaceTo > line.length) {
            replaceTo=line.length;
          }
          curEnd = Pos(curStart.line, replaceTo);
        }
        if (replaceWith=='\n') {
          if (!vim.visualMode) cm.replaceRange('', curStart, curEnd);
          (CodeMirror.commands.newlineAndIndentContinueComment || CodeMirror.commands.newlineAndIndent)(cm);
        } else {
          var replaceWithStr = cm.getRange(curStart, curEnd);
          replaceWithStr = replaceWithStr.replace(/[^\n]/g, replaceWith);
          if (vim.visualBlock) {
            var spaces = new Array(cm.getOption("tabSize")+1).join(' ');
            replaceWithStr = cm.getSelection();
            replaceWithStr = replaceWithStr.replace(/\t/g, spaces).replace(/[^\n]/g, replaceWith).split('\n');
            cm.replaceSelections(replaceWithStr);
          } else {
            cm.replaceRange(replaceWithStr, curStart, curEnd);
          }
          if (vim.visualMode) {
            curStart = cursorIsBefore(selections[0].anchor, selections[0].head) ?
                         selections[0].anchor : selections[0].head;
            cm.setCursor(curStart);
            exitVisualMode(cm, false);
          } else {
            cm.setCursor(offsetCursor(curEnd, 0, -1));
          }
        }
      },
      incrementNumberToken: function(cm, actionArgs) {
        var cur = cm.getCursor();
        var lineStr = cm.getLine(cur.line);
        var re = /-?\d+/g;
        var match;
        var start;
        var end;
        var numberStr;
        var token;
        while ((match = re.exec(lineStr)) !== null) {
          token = match[0];
          start = match.index;
          end = start + token.length;
          if (cur.ch < end)break;
        }
        if (!actionArgs.backtrack && (end <= cur.ch))return;
        if (token) {
          var increment = actionArgs.increase ? 1 : -1;
          var number = parseInt(token) + (increment * actionArgs.repeat);
          var from = Pos(cur.line, start);
          var to = Pos(cur.line, end);
          numberStr = number.toString();
          cm.replaceRange(numberStr, from, to);
        } else {
          return;
        }
        cm.setCursor(Pos(cur.line, start + numberStr.length - 1));
      },
      repeatLastEdit: function(cm, actionArgs, vim) {
        var lastEditInputState = vim.lastEditInputState;
        if (!lastEditInputState) { return; }
        var repeat = actionArgs.repeat;
        if (repeat && actionArgs.repeatIsExplicit) {
          vim.lastEditInputState.repeatOverride = repeat;
        } else {
          repeat = vim.lastEditInputState.repeatOverride || repeat;
        }
        repeatLastEdit(cm, vim, repeat, false /** repeatForInsert */);
      },
      exitInsertMode: exitInsertMode
    };

    function defineAction(name, fn) {
      actions[name] = fn;
    }
    function clipCursorToContent(cm, cur, includeLineBreak) {
      var line = Math.min(Math.max(cm.firstLine(), cur.line), cm.lastLine() );
      var maxCh = lineLength(cm, line) - 1;
      maxCh = (includeLineBreak) ? maxCh + 1 : maxCh;
      var ch = Math.min(Math.max(0, cur.ch), maxCh);
      return Pos(line, ch);
    }
    function copyArgs(args) {
      var ret = {};
      for (var prop in args) {
        if (args.hasOwnProperty(prop)) {
          ret[prop] = args[prop];
        }
      }
      return ret;
    }
    function offsetCursor(cur, offsetLine, offsetCh) {
      if (typeof offsetLine === 'object') {
        offsetCh = offsetLine.ch;
        offsetLine = offsetLine.line;
      }
      return Pos(cur.line + offsetLine, cur.ch + offsetCh);
    }
    function getOffset(anchor, head) {
      return {
        line: head.line - anchor.line,
        ch: head.line - anchor.line
      };
    }
    function commandMatches(keys, keyMap, context, inputState) {
      var match, partial = [], full = [];
      for (var i = 0; i < keyMap.length; i++) {
        var command = keyMap[i];
        if (context == 'insert' && command.context != 'insert' ||
            command.context && command.context != context ||
            inputState.operator && command.type == 'action' ||
            !(match = commandMatch(keys, command.keys))) { continue; }
        if (match == 'partial') { partial.push(command); }
        if (match == 'full') { full.push(command); }
      }
      return {
        partial: partial.length && partial,
        full: full.length && full
      };
    }
    function commandMatch(pressed, mapped) {
      if (mapped.slice(-11) == '<character>') {
        var prefixLen = mapped.length - 11;
        var pressedPrefix = pressed.slice(0, prefixLen);
        var mappedPrefix = mapped.slice(0, prefixLen);
        return pressedPrefix == mappedPrefix && pressed.length > prefixLen ? 'full' :
               mappedPrefix.indexOf(pressedPrefix) == 0 ? 'partial' : false;
      } else {
        return pressed == mapped ? 'full' :
               mapped.indexOf(pressed) == 0 ? 'partial' : false;
      }
    }
    function lastChar(keys) {
      var match = /^.*(<[\w\-]+>)$/.exec(keys);
      var selectedCharacter = match ? match[1] : keys.slice(-1);
      if (selectedCharacter.length > 1){
        switch(selectedCharacter){
          case '<CR>':
            selectedCharacter='\n';
            break;
          case '<Space>':
            selectedCharacter=' ';
            break;
          default:
            break;
        }
      }
      return selectedCharacter;
    }
    function repeatFn(cm, fn, repeat) {
      return function() {
        for (var i = 0; i < repeat; i++) {
          fn(cm);
        }
      };
    }
    function copyCursor(cur) {
      return Pos(cur.line, cur.ch);
    }
    function cursorEqual(cur1, cur2) {
      return cur1.ch == cur2.ch && cur1.line == cur2.line;
    }
    function cursorIsBefore(cur1, cur2) {
      if (cur1.line < cur2.line) {
        return true;
      }
      if (cur1.line == cur2.line && cur1.ch < cur2.ch) {
        return true;
      }
      return false;
    }
    function cursorMin(cur1, cur2) {
      if (arguments.length > 2) {
        cur2 = cursorMin.apply(undefined, Array.prototype.slice.call(arguments, 1));
      }
      return cursorIsBefore(cur1, cur2) ? cur1 : cur2;
    }
    function cursorMax(cur1, cur2) {
      if (arguments.length > 2) {
        cur2 = cursorMax.apply(undefined, Array.prototype.slice.call(arguments, 1));
      }
      return cursorIsBefore(cur1, cur2) ? cur2 : cur1;
    }
    function cursorIsBetween(cur1, cur2, cur3) {
      var cur1before2 = cursorIsBefore(cur1, cur2);
      var cur2before3 = cursorIsBefore(cur2, cur3);
      return cur1before2 && cur2before3;
    }
    function lineLength(cm, lineNum) {
      return cm.getLine(lineNum).length;
    }
    function trim(s) {
      if (s.trim) {
        return s.trim();
      }
      return s.replace(/^\s+|\s+$/g, '');
    }
    function escapeRegex(s) {
      return s.replace(/([.?*+$\[\]\/\\(){}|\-])/g, '\\$1');
    }
    function extendLineToColumn(cm, lineNum, column) {
      var endCh = lineLength(cm, lineNum);
      var spaces = new Array(column-endCh+1).join(' ');
      cm.setCursor(Pos(lineNum, endCh));
      cm.replaceRange(spaces, cm.getCursor());
    }
    function selectBlock(cm, selectionEnd) {
      var selections = [], ranges = cm.listSelections();
      var head = copyCursor(cm.clipPos(selectionEnd));
      var isClipped = !cursorEqual(selectionEnd, head);
      var curHead = cm.getCursor('head');
      var primIndex = getIndex(ranges, curHead);
      var wasClipped = cursorEqual(ranges[primIndex].head, ranges[primIndex].anchor);
      var max = ranges.length - 1;
      var index = max - primIndex > primIndex ? max : 0;
      var base = ranges[index].anchor;

      var firstLine = Math.min(base.line, head.line);
      var lastLine = Math.max(base.line, head.line);
      var baseCh = base.ch, headCh = head.ch;

      var dir = ranges[index].head.ch - baseCh;
      var newDir = headCh - baseCh;
      if (dir > 0 && newDir <= 0) {
        baseCh++;
        if (!isClipped) { headCh--; }
      } else if (dir < 0 && newDir >= 0) {
        baseCh--;
        if (!wasClipped) { headCh++; }
      } else if (dir < 0 && newDir == -1) {
        baseCh--;
        headCh++;
      }
      for (var line = firstLine; line <= lastLine; line++) {
        var range = {anchor: new Pos(line, baseCh), head: new Pos(line, headCh)};
        selections.push(range);
      }
      primIndex = head.line == lastLine ? selections.length - 1 : 0;
      cm.setSelections(selections);
      selectionEnd.ch = headCh;
      base.ch = baseCh;
      return base;
    }
    function selectForInsert(cm, head, height) {
      var sel = [];
      for (var i = 0; i < height; i++) {
        var lineHead = offsetCursor(head, i, 0);
        sel.push({anchor: lineHead, head: lineHead});
      }
      cm.setSelections(sel, 0);
    }
    function getIndex(ranges, cursor, end) {
      for (var i = 0; i < ranges.length; i++) {
        var atAnchor = end != 'head' && cursorEqual(ranges[i].anchor, cursor);
        var atHead = end != 'anchor' && cursorEqual(ranges[i].head, cursor);
        if (atAnchor || atHead) {
          return i;
        }
      }
      return -1;
    }
    function getSelectedAreaRange(cm, vim) {
      var lastSelection = vim.lastSelection;
      var getCurrentSelectedAreaRange = function() {
        var selections = cm.listSelections();
        var start =  selections[0];
        var end = selections[selections.length-1];
        var selectionStart = cursorIsBefore(start.anchor, start.head) ? start.anchor : start.head;
        var selectionEnd = cursorIsBefore(end.anchor, end.head) ? end.head : end.anchor;
        return [selectionStart, selectionEnd];
      };
      var getLastSelectedAreaRange = function() {
        var selectionStart = cm.getCursor();
        var selectionEnd = cm.getCursor();
        var block = lastSelection.visualBlock;
        if (block) {
          var width = block.width;
          var height = block.height;
          selectionEnd = Pos(selectionStart.line + height, selectionStart.ch + width);
          var selections = [];
          for (var i = selectionStart.line; i < selectionEnd.line; i++) {
            var anchor = Pos(i, selectionStart.ch);
            var head = Pos(i, selectionEnd.ch);
            var range = {anchor: anchor, head: head};
            selections.push(range);
          }
          cm.setSelections(selections);
        } else {
          var start = lastSelection.anchorMark.find();
          var end = lastSelection.headMark.find();
          var line = end.line - start.line;
          var ch = end.ch - start.ch;
          selectionEnd = {line: selectionEnd.line + line, ch: line ? selectionEnd.ch : ch + selectionEnd.ch};
          if (lastSelection.visualLine) {
            selectionStart = Pos(selectionStart.line, 0);
            selectionEnd = Pos(selectionEnd.line, lineLength(cm, selectionEnd.line));
          }
          cm.setSelection(selectionStart, selectionEnd);
        }
        return [selectionStart, selectionEnd];
      };
      if (!vim.visualMode) {
        return getLastSelectedAreaRange();
      } else {
        return getCurrentSelectedAreaRange();
      }
    }
    function updateLastSelection(cm, vim) {
      var anchor = vim.sel.anchor;
      var head = vim.sel.head;
      if (vim.lastPastedText) {
        head = cm.posFromIndex(cm.indexFromPos(anchor) + vim.lastPastedText.length);
        vim.lastPastedText = null;
      }
      vim.lastSelection = {'anchorMark': cm.setBookmark(anchor),
                           'headMark': cm.setBookmark(head),
                           'anchor': copyCursor(anchor),
                           'head': copyCursor(head),
                           'visualMode': vim.visualMode,
                           'visualLine': vim.visualLine,
                           'visualBlock': vim.visualBlock};
    }
    function expandSelection(cm, start, end) {
      var sel = cm.state.vim.sel;
      var head = sel.head;
      var anchor = sel.anchor;
      var tmp;
      if (cursorIsBefore(end, start)) {
        tmp = end;
        end = start;
        start = tmp;
      }
      if (cursorIsBefore(head, anchor)) {
        head = cursorMin(start, head);
        anchor = cursorMax(anchor, end);
      } else {
        anchor = cursorMin(start, anchor);
        head = cursorMax(head, end);
        head = offsetCursor(head, 0, -1);
        if (head.ch == -1 && head.line != cm.firstLine()) {
          head = Pos(head.line - 1, lineLength(cm, head.line - 1));
        }
      }
      return [anchor, head];
    }
    function updateCmSelection(cm, sel, mode) {
      var vim = cm.state.vim;
      sel = sel || vim.sel;
      var mode = mode ||
        vim.visualLine ? 'line' : vim.visualBlock ? 'block' : 'char';
      var cmSel = makeCmSelection(cm, sel, mode);
      cm.setSelections(cmSel.ranges, cmSel.primary);
      updateFakeCursor(cm);
    }
    function makeCmSelection(cm, sel, mode, exclusive) {
      var head = copyCursor(sel.head);
      var anchor = copyCursor(sel.anchor);
      if (mode == 'char') {
        var headOffset = !exclusive && !cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
        var anchorOffset = cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
        head = offsetCursor(sel.head, 0, headOffset);
        anchor = offsetCursor(sel.anchor, 0, anchorOffset);
        return {
          ranges: [{anchor: anchor, head: head}],
          primary: 0
        };
      } else if (mode == 'line') {
        if (!cursorIsBefore(sel.head, sel.anchor)) {
          anchor.ch = 0;

          var lastLine = cm.lastLine();
          if (head.line > lastLine) {
            head.line = lastLine;
          }
          head.ch = lineLength(cm, head.line);
        } else {
          head.ch = 0;
          anchor.ch = lineLength(cm, anchor.line);
        }
        return {
          ranges: [{anchor: anchor, head: head}],
          primary: 0
        };
      } else if (mode == 'block') {
        var top = Math.min(anchor.line, head.line),
            left = Math.min(anchor.ch, head.ch),
            bottom = Math.max(anchor.line, head.line),
            right = Math.max(anchor.ch, head.ch) + 1;
        var height = bottom - top + 1;
        var primary = head.line == top ? 0 : height - 1;
        var ranges = [];
        for (var i = 0; i < height; i++) {
          ranges.push({
            anchor: Pos(top + i, left),
            head: Pos(top + i, right)
          });
        }
        return {
          ranges: ranges,
          primary: primary
        };
      }
    }
    function getHead(cm) {
      var cur = cm.getCursor('head');
      if (cm.getSelection().length == 1) {
        cur = cursorMin(cur, cm.getCursor('anchor'));
      }
      return cur;
    }
    function exitVisualMode(cm, moveHead) {
      var vim = cm.state.vim;
      if (moveHead !== false) {
        cm.setCursor(clipCursorToContent(cm, vim.sel.head));
      }
      updateLastSelection(cm, vim);
      vim.visualMode = false;
      vim.visualLine = false;
      vim.visualBlock = false;
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      if (vim.fakeCursor) {
        vim.fakeCursor.clear();
      }
    }
    function clipToLine(cm, curStart, curEnd) {
      var selection = cm.getRange(curStart, curEnd);
      if (/\n\s*$/.test(selection)) {
        var lines = selection.split('\n');
        lines.pop();
        var line;
        for (var line = lines.pop(); lines.length > 0 && line && isWhiteSpaceString(line); line = lines.pop()) {
          curEnd.line--;
          curEnd.ch = 0;
        }
        if (line) {
          curEnd.line--;
          curEnd.ch = lineLength(cm, curEnd.line);
        } else {
          curEnd.ch = 0;
        }
      }
    }
    function expandSelectionToLine(_cm, curStart, curEnd) {
      curStart.ch = 0;
      curEnd.ch = 0;
      curEnd.line++;
    }

    function findFirstNonWhiteSpaceCharacter(text) {
      if (!text) {
        return 0;
      }
      var firstNonWS = text.search(/\S/);
      return firstNonWS == -1 ? text.length : firstNonWS;
    }

    function expandWordUnderCursor(cm, inclusive, _forward, bigWord, noSymbol) {
      var cur = getHead(cm);
      var line = cm.getLine(cur.line);
      var idx = cur.ch;
      var test = noSymbol ? wordCharTest[0] : bigWordCharTest [0];
      while (!test(line.charAt(idx))) {
        idx++;
        if (idx >= line.length) { return null; }
      }

      if (bigWord) {
        test = bigWordCharTest[0];
      } else {
        test = wordCharTest[0];
        if (!test(line.charAt(idx))) {
          test = wordCharTest[1];
        }
      }

      var end = idx, start = idx;
      while (test(line.charAt(end)) && end < line.length) { end++; }
      while (test(line.charAt(start)) && start >= 0) { start--; }
      start++;

      if (inclusive) {
        var wordEnd = end;
        while (/\s/.test(line.charAt(end)) && end < line.length) { end++; }
        if (wordEnd == end) {
          var wordStart = start;
          while (/\s/.test(line.charAt(start - 1)) && start > 0) { start--; }
          if (!start) { start = wordStart; }
        }
      }
      return { start: Pos(cur.line, start), end: Pos(cur.line, end) };
    }

    function recordJumpPosition(cm, oldCur, newCur) {
      if (!cursorEqual(oldCur, newCur)) {
        vimGlobalState.jumpList.add(cm, oldCur, newCur);
      }
    }

    function recordLastCharacterSearch(increment, args) {
        vimGlobalState.lastChararacterSearch.increment = increment;
        vimGlobalState.lastChararacterSearch.forward = args.forward;
        vimGlobalState.lastChararacterSearch.selectedCharacter = args.selectedCharacter;
    }

    var symbolToMode = {
        '(': 'bracket', ')': 'bracket', '{': 'bracket', '}': 'bracket',
        '[': 'section', ']': 'section',
        '*': 'comment', '/': 'comment',
        'm': 'method', 'M': 'method',
        '#': 'preprocess'
    };
    var findSymbolModes = {
      bracket: {
        isComplete: function(state) {
          if (state.nextCh === state.symb) {
            state.depth++;
            if (state.depth >= 1)return true;
          } else if (state.nextCh === state.reverseSymb) {
            state.depth--;
          }
          return false;
        }
      },
      section: {
        init: function(state) {
          state.curMoveThrough = true;
          state.symb = (state.forward ? ']' : '[') === state.symb ? '{' : '}';
        },
        isComplete: function(state) {
          return state.index === 0 && state.nextCh === state.symb;
        }
      },
      comment: {
        isComplete: function(state) {
          var found = state.lastCh === '*' && state.nextCh === '/';
          state.lastCh = state.nextCh;
          return found;
        }
      },
      method: {
        init: function(state) {
          state.symb = (state.symb === 'm' ? '{' : '}');
          state.reverseSymb = state.symb === '{' ? '}' : '{';
        },
        isComplete: function(state) {
          if (state.nextCh === state.symb)return true;
          return false;
        }
      },
      preprocess: {
        init: function(state) {
          state.index = 0;
        },
        isComplete: function(state) {
          if (state.nextCh === '#') {
            var token = state.lineText.match(/#(\w+)/)[1];
            if (token === 'endif') {
              if (state.forward && state.depth === 0) {
                return true;
              }
              state.depth++;
            } else if (token === 'if') {
              if (!state.forward && state.depth === 0) {
                return true;
              }
              state.depth--;
            }
            if (token === 'else' && state.depth === 0)return true;
          }
          return false;
        }
      }
    };
    function findSymbol(cm, repeat, forward, symb) {
      var cur = copyCursor(cm.getCursor());
      var increment = forward ? 1 : -1;
      var endLine = forward ? cm.lineCount() : -1;
      var curCh = cur.ch;
      var line = cur.line;
      var lineText = cm.getLine(line);
      var state = {
        lineText: lineText,
        nextCh: lineText.charAt(curCh),
        lastCh: null,
        index: curCh,
        symb: symb,
        reverseSymb: (forward ?  { ')': '(', '}': '{' } : { '(': ')', '{': '}' })[symb],
        forward: forward,
        depth: 0,
        curMoveThrough: false
      };
      var mode = symbolToMode[symb];
      if (!mode)return cur;
      var init = findSymbolModes[mode].init;
      var isComplete = findSymbolModes[mode].isComplete;
      if (init) { init(state); }
      while (line !== endLine && repeat) {
        state.index += increment;
        state.nextCh = state.lineText.charAt(state.index);
        if (!state.nextCh) {
          line += increment;
          state.lineText = cm.getLine(line) || '';
          if (increment > 0) {
            state.index = 0;
          } else {
            var lineLen = state.lineText.length;
            state.index = (lineLen > 0) ? (lineLen-1) : 0;
          }
          state.nextCh = state.lineText.charAt(state.index);
        }
        if (isComplete(state)) {
          cur.line = line;
          cur.ch = state.index;
          repeat--;
        }
      }
      if (state.nextCh || state.curMoveThrough) {
        return Pos(line, state.index);
      }
      return cur;
    }
    function findWord(cm, cur, forward, bigWord, emptyLineIsWord) {
      var lineNum = cur.line;
      var pos = cur.ch;
      var line = cm.getLine(lineNum);
      var dir = forward ? 1 : -1;
      var charTests = bigWord ? bigWordCharTest: wordCharTest;

      if (emptyLineIsWord && line == '') {
        lineNum += dir;
        line = cm.getLine(lineNum);
        if (!isLine(cm, lineNum)) {
          return null;
        }
        pos = (forward) ? 0 : line.length;
      }

      while (true) {
        if (emptyLineIsWord && line == '') {
          return { from: 0, to: 0, line: lineNum };
        }
        var stop = (dir > 0) ? line.length : -1;
        var wordStart = stop, wordEnd = stop;
        while (pos != stop) {
          var foundWord = false;
          for (var i = 0; i < charTests.length && !foundWord; ++i) {
            if (charTests[i](line.charAt(pos))) {
              wordStart = pos;
              while (pos != stop && charTests[i](line.charAt(pos))) {
                pos += dir;
              }
              wordEnd = pos;
              foundWord = wordStart != wordEnd;
              if (wordStart == cur.ch && lineNum == cur.line &&
                  wordEnd == wordStart + dir) {
                continue;
              } else {
                return {
                  from: Math.min(wordStart, wordEnd + 1),
                  to: Math.max(wordStart, wordEnd),
                  line: lineNum };
              }
            }
          }
          if (!foundWord) {
            pos += dir;
          }
        }
        lineNum += dir;
        if (!isLine(cm, lineNum)) {
          return null;
        }
        line = cm.getLine(lineNum);
        pos = (dir > 0) ? 0 : line.length;
      }
      throw new Error('The impossible happened.');
    }
    function moveToWord(cm, cur, repeat, forward, wordEnd, bigWord) {
      var curStart = copyCursor(cur);
      var words = [];
      if (forward && !wordEnd || !forward && wordEnd) {
        repeat++;
      }
      var emptyLineIsWord = !(forward && wordEnd);
      for (var i = 0; i < repeat; i++) {
        var word = findWord(cm, cur, forward, bigWord, emptyLineIsWord);
        if (!word) {
          var eodCh = lineLength(cm, cm.lastLine());
          words.push(forward
              ? {line: cm.lastLine(), from: eodCh, to: eodCh}
              : {line: 0, from: 0, to: 0});
          break;
        }
        words.push(word);
        cur = Pos(word.line, forward ? (word.to - 1) : word.from);
      }
      var shortCircuit = words.length != repeat;
      var firstWord = words[0];
      var lastWord = words.pop();
      if (forward && !wordEnd) {
        if (!shortCircuit && (firstWord.from != curStart.ch || firstWord.line != curStart.line)) {
          lastWord = words.pop();
        }
        return Pos(lastWord.line, lastWord.from);
      } else if (forward && wordEnd) {
        return Pos(lastWord.line, lastWord.to - 1);
      } else if (!forward && wordEnd) {
        if (!shortCircuit && (firstWord.to != curStart.ch || firstWord.line != curStart.line)) {
          lastWord = words.pop();
        }
        return Pos(lastWord.line, lastWord.to);
      } else {
        return Pos(lastWord.line, lastWord.from);
      }
    }

    function moveToCharacter(cm, repeat, forward, character) {
      var cur = cm.getCursor();
      var start = cur.ch;
      var idx;
      for (var i = 0; i < repeat; i ++) {
        var line = cm.getLine(cur.line);
        idx = charIdxInLine(start, line, character, forward, true);
        if (idx == -1) {
          return null;
        }
        start = idx;
      }
      return Pos(cm.getCursor().line, idx);
    }

    function moveToColumn(cm, repeat) {
      var line = cm.getCursor().line;
      return clipCursorToContent(cm, Pos(line, repeat - 1));
    }

    function updateMark(cm, vim, markName, pos) {
      if (!inArray(markName, validMarks)) {
        return;
      }
      if (vim.marks[markName]) {
        vim.marks[markName].clear();
      }
      vim.marks[markName] = cm.setBookmark(pos);
    }

    function charIdxInLine(start, line, character, forward, includeChar) {
      var idx;
      if (forward) {
        idx = line.indexOf(character, start + 1);
        if (idx != -1 && !includeChar) {
          idx -= 1;
        }
      } else {
        idx = line.lastIndexOf(character, start - 1);
        if (idx != -1 && !includeChar) {
          idx += 1;
        }
      }
      return idx;
    }

    function findParagraph(cm, head, repeat, dir, inclusive) {
      var line = head.line;
      var min = cm.firstLine();
      var max = cm.lastLine();
      var start, end, i = line;
      function isEmpty(i) { return !/\S/.test(cm.getLine(i)); } // ace_patch
      function isBoundary(i, dir, any) {
        if (any) { return isEmpty(i) != isEmpty(i + dir); }
        return !isEmpty(i) && isEmpty(i + dir);
      }
      function skipFold(i) {
          dir = dir > 0 ? 1 : -1;
          var foldLine = cm.ace.session.getFoldLine(i);
          if (foldLine) {
              if (i + dir > foldLine.start.row && i + dir < foldLine.end.row)
                  dir = (dir > 0 ? foldLine.end.row : foldLine.start.row) - i;
          }
      }
      if (dir) {
        while (min <= i && i <= max && repeat > 0) {
          skipFold(i);
          if (isBoundary(i, dir)) { repeat--; }
          i += dir;
        }
        return new Pos(i, 0);
      }

      var vim = cm.state.vim;
      if (vim.visualLine && isBoundary(line, 1, true)) {
        var anchor = vim.sel.anchor;
        if (isBoundary(anchor.line, -1, true)) {
          if (!inclusive || anchor.line != line) {
            line += 1;
          }
        }
      }
      var startState = isEmpty(line);
      for (i = line; i <= max && repeat; i++) {
        if (isBoundary(i, 1, true)) {
          if (!inclusive || isEmpty(i) != startState) {
            repeat--;
          }
        }
      }
      end = new Pos(i, 0);
      if (i > max && !startState) { startState = true; }
      else { inclusive = false; }
      for (i = line; i > min; i--) {
        if (!inclusive || isEmpty(i) == startState || i == line) {
          if (isBoundary(i, -1, true)) { break; }
        }
      }
      start = new Pos(i, 0);
      return { start: start, end: end };
    }
    function selectCompanionObject(cm, head, symb, inclusive) {
      var cur = head, start, end;

      var bracketRegexp = ({
        '(': /[()]/, ')': /[()]/,
        '[': /[[\]]/, ']': /[[\]]/,
        '{': /[{}]/, '}': /[{}]/})[symb];
      var openSym = ({
        '(': '(', ')': '(',
        '[': '[', ']': '[',
        '{': '{', '}': '{'})[symb];
      var curChar = cm.getLine(cur.line).charAt(cur.ch);
      var offset = curChar === openSym ? 1 : 0;

      start = cm.scanForBracket(Pos(cur.line, cur.ch + offset), -1, null, {'bracketRegex': bracketRegexp});
      end = cm.scanForBracket(Pos(cur.line, cur.ch + offset), 1, null, {'bracketRegex': bracketRegexp});

      if (!start || !end) {
        return { start: cur, end: cur };
      }

      start = start.pos;
      end = end.pos;

      if ((start.line == end.line && start.ch > end.ch)
          || (start.line > end.line)) {
        var tmp = start;
        start = end;
        end = tmp;
      }

      if (inclusive) {
        end.ch += 1;
      } else {
        start.ch += 1;
      }

      return { start: start, end: end };
    }
    function findBeginningAndEnd(cm, head, symb, inclusive) {
      var cur = copyCursor(head);
      var line = cm.getLine(cur.line);
      var chars = line.split('');
      var start, end, i, len;
      var firstIndex = chars.indexOf(symb);
      if (cur.ch < firstIndex) {
        cur.ch = firstIndex;
      }
      else if (firstIndex < cur.ch && chars[cur.ch] == symb) {
        end = cur.ch; // assign end to the current cursor
        --cur.ch; // make sure to look backwards
      }
      if (chars[cur.ch] == symb && !end) {
        start = cur.ch + 1; // assign start to ahead of the cursor
      } else {
        for (i = cur.ch; i > -1 && !start; i--) {
          if (chars[i] == symb) {
            start = i + 1;
          }
        }
      }
      if (start && !end) {
        for (i = start, len = chars.length; i < len && !end; i++) {
          if (chars[i] == symb) {
            end = i;
          }
        }
      }
      if (!start || !end) {
        return { start: cur, end: cur };
      }
      if (inclusive) {
        --start; ++end;
      }

      return {
        start: Pos(cur.line, start),
        end: Pos(cur.line, end)
      };
    }
    defineOption('pcre', true, 'boolean');
    function SearchState() {}
    SearchState.prototype = {
      getQuery: function() {
        return vimGlobalState.query;
      },
      setQuery: function(query) {
        vimGlobalState.query = query;
      },
      getOverlay: function() {
        return this.searchOverlay;
      },
      setOverlay: function(overlay) {
        this.searchOverlay = overlay;
      },
      isReversed: function() {
        return vimGlobalState.isReversed;
      },
      setReversed: function(reversed) {
        vimGlobalState.isReversed = reversed;
      },
      getScrollbarAnnotate: function() {
        return this.annotate;
      },
      setScrollbarAnnotate: function(annotate) {
        this.annotate = annotate;
      }
    };
    function getSearchState(cm) {
      var vim = cm.state.vim;
      return vim.searchState_ || (vim.searchState_ = new SearchState());
    }
    function dialog(cm, template, shortText, onClose, options) {
      if (cm.openDialog) {
        cm.openDialog(template, onClose, { bottom: true, value: options.value,
            onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp,
            selectValueOnOpen: false});
      }
      else {
        onClose(prompt(shortText, ''));
      }
    }
    function splitBySlash(argString) {
      var slashes = findUnescapedSlashes(argString) || [];
      if (!slashes.length) return [];
      var tokens = [];
      if (slashes[0] !== 0) return;
      for (var i = 0; i < slashes.length; i++) {
        if (typeof slashes[i] == 'number')
          tokens.push(argString.substring(slashes[i] + 1, slashes[i+1]));
      }
      return tokens;
    }

    function findUnescapedSlashes(str) {
      var escapeNextChar = false;
      var slashes = [];
      for (var i = 0; i < str.length; i++) {
        var c = str.charAt(i);
        if (!escapeNextChar && c == '/') {
          slashes.push(i);
        }
        escapeNextChar = !escapeNextChar && (c == '\\');
      }
      return slashes;
    }
    function translateRegex(str) {
      var specials = '|(){';
      var unescape = '}';
      var escapeNextChar = false;
      var out = [];
      for (var i = -1; i < str.length; i++) {
        var c = str.charAt(i) || '';
        var n = str.charAt(i+1) || '';
        var specialComesNext = (n && specials.indexOf(n) != -1);
        if (escapeNextChar) {
          if (c !== '\\' || !specialComesNext) {
            out.push(c);
          }
          escapeNextChar = false;
        } else {
          if (c === '\\') {
            escapeNextChar = true;
            if (n && unescape.indexOf(n) != -1) {
              specialComesNext = true;
            }
            if (!specialComesNext || n === '\\') {
              out.push(c);
            }
          } else {
            out.push(c);
            if (specialComesNext && n !== '\\') {
              out.push('\\');
            }
          }
        }
      }
      return out.join('');
    }
    var charUnescapes = {'\\n': '\n', '\\r': '\r', '\\t': '\t'};
    function translateRegexReplace(str) {
      var escapeNextChar = false;
      var out = [];
      for (var i = -1; i < str.length; i++) {
        var c = str.charAt(i) || '';
        var n = str.charAt(i+1) || '';
        if (charUnescapes[c + n]) {
          out.push(charUnescapes[c+n]);
          i++;
        } else if (escapeNextChar) {
          out.push(c);
          escapeNextChar = false;
        } else {
          if (c === '\\') {
            escapeNextChar = true;
            if ((isNumber(n) || n === '$')) {
              out.push('$');
            } else if (n !== '/' && n !== '\\') {
              out.push('\\');
            }
          } else {
            if (c === '$') {
              out.push('$');
            }
            out.push(c);
            if (n === '/') {
              out.push('\\');
            }
          }
        }
      }
      return out.join('');
    }
    var unescapes = {'\\/': '/', '\\\\': '\\', '\\n': '\n', '\\r': '\r', '\\t': '\t'};
    function unescapeRegexReplace(str) {
      var stream = new CodeMirror.StringStream(str);
      var output = [];
      while (!stream.eol()) {
        while (stream.peek() && stream.peek() != '\\') {
          output.push(stream.next());
        }
        var matched = false;
        for (var matcher in unescapes) {
          if (stream.match(matcher, true)) {
            matched = true;
            output.push(unescapes[matcher]);
            break;
          }
        }
        if (!matched) {
          output.push(stream.next());
        }
      }
      return output.join('');
    }
    function parseQuery(query, ignoreCase, smartCase) {
      var lastSearchRegister = vimGlobalState.registerController.getRegister('/');
      lastSearchRegister.setText(query);
      if (query instanceof RegExp) { return query; }
      var slashes = findUnescapedSlashes(query);
      var regexPart;
      var forceIgnoreCase;
      if (!slashes.length) {
        regexPart = query;
      } else {
        regexPart = query.substring(0, slashes[0]);
        var flagsPart = query.substring(slashes[0]);
        forceIgnoreCase = (flagsPart.indexOf('i') != -1);
      }
      if (!regexPart) {
        return null;
      }
      if (!getOption('pcre')) {
        regexPart = translateRegex(regexPart);
      }
      if (smartCase) {
        ignoreCase = (/^[^A-Z]*$/).test(regexPart);
      }
      var regexp = new RegExp(regexPart,
          (ignoreCase || forceIgnoreCase) ? 'i' : undefined);
      return regexp;
    }
    function showConfirm(cm, text) {
      if (cm.openNotification) {
        cm.openNotification('<span style="color: red">' + text + '</span>',
                            {bottom: true, duration: 5000});
      } else {
        alert(text);
      }
    }
    function makePrompt(prefix, desc) {
      var raw = '';
      if (prefix) {
        raw += '<span style="font-family: monospace">' + prefix + '</span>';
      }
      raw += '<input type="text"/> ' +
          '<span style="color: #888">';
      if (desc) {
        raw += '<span style="color: #888">';
        raw += desc;
        raw += '</span>';
      }
      return raw;
    }
    var searchPromptDesc = '(Javascript regexp)';
    function showPrompt(cm, options) {
      var shortText = (options.prefix || '') + ' ' + (options.desc || '');
      var prompt = makePrompt(options.prefix, options.desc);
      dialog(cm, prompt, shortText, options.onClose, options);
    }
    function regexEqual(r1, r2) {
      if (r1 instanceof RegExp && r2 instanceof RegExp) {
          var props = ['global', 'multiline', 'ignoreCase', 'source'];
          for (var i = 0; i < props.length; i++) {
              var prop = props[i];
              if (r1[prop] !== r2[prop]) {
                  return false;
              }
          }
          return true;
      }
      return false;
    }
    function updateSearchQuery(cm, rawQuery, ignoreCase, smartCase) {
      if (!rawQuery) {
        return;
      }
      var state = getSearchState(cm);
      var query = parseQuery(rawQuery, !!ignoreCase, !!smartCase);
      if (!query) {
        return;
      }
      highlightSearchMatches(cm, query);
      if (regexEqual(query, state.getQuery())) {
        return query;
      }
      state.setQuery(query);
      return query;
    }
    function searchOverlay(query) {
      if (query.source.charAt(0) == '^') {
        var matchSol = true;
      }
      return {
        token: function(stream) {
          if (matchSol && !stream.sol()) {
            stream.skipToEnd();
            return;
          }
          var match = stream.match(query, false);
          if (match) {
            if (match[0].length == 0) {
              stream.next();
              return 'searching';
            }
            if (!stream.sol()) {
              stream.backUp(1);
              if (!query.exec(stream.next() + match[0])) {
                stream.next();
                return null;
              }
            }
            stream.match(query);
            return 'searching';
          }
          while (!stream.eol()) {
            stream.next();
            if (stream.match(query, false)) break;
          }
        },
        query: query
      };
    }
    function highlightSearchMatches(cm, query) {
      var searchState = getSearchState(cm);
      var overlay = searchState.getOverlay();
      if (!overlay || query != overlay.query) {
        if (overlay) {
          cm.removeOverlay(overlay);
        }
        overlay = searchOverlay(query);
        cm.addOverlay(overlay);
        if (cm.showMatchesOnScrollbar) {
          if (searchState.getScrollbarAnnotate()) {
            searchState.getScrollbarAnnotate().clear();
          }
          searchState.setScrollbarAnnotate(cm.showMatchesOnScrollbar(query));
        }
        searchState.setOverlay(overlay);
      }
    }
    function findNext(cm, prev, query, repeat) {
      if (repeat === undefined) { repeat = 1; }
      return cm.operation(function() {
        var pos = cm.getCursor();
        var cursor = cm.getSearchCursor(query, pos);
        for (var i = 0; i < repeat; i++) {
          var found = cursor.find(prev);
          if (i == 0 && found && cursorEqual(cursor.from(), pos)) { found = cursor.find(prev); }
          if (!found) {
            cursor = cm.getSearchCursor(query,
                (prev) ? Pos(cm.lastLine()) : Pos(cm.firstLine(), 0) );
            if (!cursor.find(prev)) {
              return;
            }
          }
        }
        return cursor.from();
      });
    }
    function clearSearchHighlight(cm) {
      var state = getSearchState(cm);
      cm.removeOverlay(getSearchState(cm).getOverlay());
      state.setOverlay(null);
      if (state.getScrollbarAnnotate()) {
        state.getScrollbarAnnotate().clear();
        state.setScrollbarAnnotate(null);
      }
    }
    function isInRange(pos, start, end) {
      if (typeof pos != 'number') {
        pos = pos.line;
      }
      if (start instanceof Array) {
        return inArray(pos, start);
      } else {
        if (end) {
          return (pos >= start && pos <= end);
        } else {
          return pos == start;
        }
      }
    }
    function getUserVisibleLines(cm) {
      var renderer = cm.ace.renderer;
      return {
        top: renderer.getFirstFullyVisibleRow(),
        bottom: renderer.getLastFullyVisibleRow()
      }
    }

    var ExCommandDispatcher = function() {
      this.buildCommandMap_();
    };
    ExCommandDispatcher.prototype = {
      processCommand: function(cm, input, opt_params) {
        var that = this;
        cm.operation(function () {
          cm.curOp.isVimOp = true;
          that._processCommand(cm, input, opt_params);
        });
      },
      _processCommand: function(cm, input, opt_params) {
        var vim = cm.state.vim;
        var commandHistoryRegister = vimGlobalState.registerController.getRegister(':');
        var previousCommand = commandHistoryRegister.toString();
        if (vim.visualMode) {
          exitVisualMode(cm);
        }
        var inputStream = new CodeMirror.StringStream(input);
        commandHistoryRegister.setText(input);
        var params = opt_params || {};
        params.input = input;
        try {
          this.parseInput_(cm, inputStream, params);
        } catch(e) {
          showConfirm(cm, e);
          throw e;
        }
        var command;
        var commandName;
        if (!params.commandName) {
          if (params.line !== undefined) {
            commandName = 'move';
          }
        } else {
          command = this.matchCommand_(params.commandName);
          if (command) {
            commandName = command.name;
            if (command.excludeFromCommandHistory) {
              commandHistoryRegister.setText(previousCommand);
            }
            this.parseCommandArgs_(inputStream, params, command);
            if (command.type == 'exToKey') {
              for (var i = 0; i < command.toKeys.length; i++) {
                CodeMirror.Vim.handleKey(cm, command.toKeys[i], 'mapping');
              }
              return;
            } else if (command.type == 'exToEx') {
              this.processCommand(cm, command.toInput);
              return;
            }
          }
        }
        if (!commandName) {
          showConfirm(cm, 'Not an editor command ":' + input + '"');
          return;
        }
        try {
          exCommands[commandName](cm, params);
          if ((!command || !command.possiblyAsync) && params.callback) {
            params.callback();
          }
        } catch(e) {
          showConfirm(cm, e);
          throw e;
        }
      },
      parseInput_: function(cm, inputStream, result) {
        inputStream.eatWhile(':');
        if (inputStream.eat('%')) {
          result.line = cm.firstLine();
          result.lineEnd = cm.lastLine();
        } else {
          result.line = this.parseLineSpec_(cm, inputStream);
          if (result.line !== undefined && inputStream.eat(',')) {
            result.lineEnd = this.parseLineSpec_(cm, inputStream);
          }
        }
        var commandMatch = inputStream.match(/^(\w+)/);
        if (commandMatch) {
          result.commandName = commandMatch[1];
        } else {
          result.commandName = inputStream.match(/.*/)[0];
        }

        return result;
      },
      parseLineSpec_: function(cm, inputStream) {
        var numberMatch = inputStream.match(/^(\d+)/);
        if (numberMatch) {
          return parseInt(numberMatch[1], 10) - 1;
        }
        switch (inputStream.next()) {
          case '.':
            return cm.getCursor().line;
          case '$':
            return cm.lastLine();
          case '\'':
            var mark = cm.state.vim.marks[inputStream.next()];
            if (mark && mark.find()) {
              return mark.find().line;
            }
            throw new Error('Mark not set');
          default:
            inputStream.backUp(1);
            return undefined;
        }
      },
      parseCommandArgs_: function(inputStream, params, command) {
        if (inputStream.eol()) {
          return;
        }
        params.argString = inputStream.match(/.*/)[0];
        var delim = command.argDelimiter || /\s+/;
        var args = trim(params.argString).split(delim);
        if (args.length && args[0]) {
          params.args = args;
        }
      },
      matchCommand_: function(commandName) {
        for (var i = commandName.length; i > 0; i--) {
          var prefix = commandName.substring(0, i);
          if (this.commandMap_[prefix]) {
            var command = this.commandMap_[prefix];
            if (command.name.indexOf(commandName) === 0) {
              return command;
            }
          }
        }
        return null;
      },
      buildCommandMap_: function() {
        this.commandMap_ = {};
        for (var i = 0; i < defaultExCommandMap.length; i++) {
          var command = defaultExCommandMap[i];
          var key = command.shortName || command.name;
          this.commandMap_[key] = command;
        }
      },
      map: function(lhs, rhs, ctx) {
        if (lhs != ':' && lhs.charAt(0) == ':') {
          if (ctx) { throw Error('Mode not supported for ex mappings'); }
          var commandName = lhs.substring(1);
          if (rhs != ':' && rhs.charAt(0) == ':') {
            this.commandMap_[commandName] = {
              name: commandName,
              type: 'exToEx',
              toInput: rhs.substring(1),
              user: true
            };
          } else {
            this.commandMap_[commandName] = {
              name: commandName,
              type: 'exToKey',
              toKeys: rhs,
              user: true
            };
          }
        } else {
          if (rhs != ':' && rhs.charAt(0) == ':') {
            var mapping = {
              keys: lhs,
              type: 'keyToEx',
              exArgs: { input: rhs.substring(1) },
              user: true};
            if (ctx) { mapping.context = ctx; }
            defaultKeymap.unshift(mapping);
          } else {
            var mapping = {
              keys: lhs,
              type: 'keyToKey',
              toKeys: rhs,
              user: true
            };
            if (ctx) { mapping.context = ctx; }
            defaultKeymap.unshift(mapping);
          }
        }
      },
      unmap: function(lhs, ctx) {
        if (lhs != ':' && lhs.charAt(0) == ':') {
          if (ctx) { throw Error('Mode not supported for ex mappings'); }
          var commandName = lhs.substring(1);
          if (this.commandMap_[commandName] && this.commandMap_[commandName].user) {
            delete this.commandMap_[commandName];
            return;
          }
        } else {
          var keys = lhs;
          for (var i = 0; i < defaultKeymap.length; i++) {
            if (keys == defaultKeymap[i].keys
                && defaultKeymap[i].context === ctx
                && defaultKeymap[i].user) {
              defaultKeymap.splice(i, 1);
              return;
            }
          }
        }
      }
    };

    var exCommands = {
      colorscheme: function(cm, params) {
        if (!params.args || params.args.length < 1) {
          showConfirm(cm, cm.getOption('theme'));
          return;
        }
        cm.setOption('theme', params.args[0]);
      },
      map: function(cm, params, ctx) {
        var mapArgs = params.args;
        if (!mapArgs || mapArgs.length < 2) {
          if (cm) {
            showConfirm(cm, 'Invalid mapping: ' + params.input);
          }
          return;
        }
        exCommandDispatcher.map(mapArgs[0], mapArgs[1], ctx);
      },
      imap: function(cm, params) { this.map(cm, params, 'insert'); },
      nmap: function(cm, params) { this.map(cm, params, 'normal'); },
      vmap: function(cm, params) { this.map(cm, params, 'visual'); },
      unmap: function(cm, params, ctx) {
        var mapArgs = params.args;
        if (!mapArgs || mapArgs.length < 1) {
          if (cm) {
            showConfirm(cm, 'No such mapping: ' + params.input);
          }
          return;
        }
        exCommandDispatcher.unmap(mapArgs[0], ctx);
      },
      move: function(cm, params) {
        commandDispatcher.processCommand(cm, cm.state.vim, {
            type: 'motion',
            motion: 'moveToLineOrEdgeOfDocument',
            motionArgs: { forward: false, explicitRepeat: true,
              linewise: true },
            repeatOverride: params.line+1});
      },
      set: function(cm, params) {
        var setArgs = params.args;
        var setCfg = params.setCfg || {};
        if (!setArgs || setArgs.length < 1) {
          if (cm) {
            showConfirm(cm, 'Invalid mapping: ' + params.input);
          }
          return;
        }
        var expr = setArgs[0].split('=');
        var optionName = expr[0];
        var value = expr[1];
        var forceGet = false;

        if (optionName.charAt(optionName.length - 1) == '?') {
          if (value) { throw Error('Trailing characters: ' + params.argString); }
          optionName = optionName.substring(0, optionName.length - 1);
          forceGet = true;
        }
        if (value === undefined && optionName.substring(0, 2) == 'no') {
          optionName = optionName.substring(2);
          value = false;
        }

        var optionIsBoolean = options[optionName] && options[optionName].type == 'boolean';
        if (optionIsBoolean && value == undefined) {
          value = true;
        }
        if (!optionIsBoolean && value === undefined || forceGet) {
          var oldValue = getOption(optionName, cm, setCfg);
          if (oldValue === true || oldValue === false) {
            showConfirm(cm, ' ' + (oldValue ? '' : 'no') + optionName);
          } else {
            showConfirm(cm, '  ' + optionName + '=' + oldValue);
          }
        } else {
          setOption(optionName, value, cm, setCfg);
        }
      },
      setlocal: function (cm, params) {
        params.setCfg = {scope: 'local'};
        this.set(cm, params);
      },
      setglobal: function (cm, params) {
        params.setCfg = {scope: 'global'};
        this.set(cm, params);
      },
      registers: function(cm, params) {
        var regArgs = params.args;
        var registers = vimGlobalState.registerController.registers;
        var regInfo = '----------Registers----------<br><br>';
        if (!regArgs) {
          for (var registerName in registers) {
            var text = registers[registerName].toString();
            if (text.length) {
              regInfo += '"' + registerName + '    ' + text + '<br>';
            }
          }
        } else {
          var registerName;
          regArgs = regArgs.join('');
          for (var i = 0; i < regArgs.length; i++) {
            registerName = regArgs.charAt(i);
            if (!vimGlobalState.registerController.isValidRegister(registerName)) {
              continue;
            }
            var register = registers[registerName] || new Register();
            regInfo += '"' + registerName + '    ' + register.toString() + '<br>';
          }
        }
        showConfirm(cm, regInfo);
      },
      sort: function(cm, params) {
        var reverse, ignoreCase, unique, number;
        function parseArgs() {
          if (params.argString) {
            var args = new CodeMirror.StringStream(params.argString);
            if (args.eat('!')) { reverse = true; }
            if (args.eol()) { return; }
            if (!args.eatSpace()) { return 'Invalid arguments'; }
            var opts = args.match(/[a-z]+/);
            if (opts) {
              opts = opts[0];
              ignoreCase = opts.indexOf('i') != -1;
              unique = opts.indexOf('u') != -1;
              var decimal = opts.indexOf('d') != -1 && 1;
              var hex = opts.indexOf('x') != -1 && 1;
              var octal = opts.indexOf('o') != -1 && 1;
              if (decimal + hex + octal > 1) { return 'Invalid arguments'; }
              number = decimal && 'decimal' || hex && 'hex' || octal && 'octal';
            }
            if (args.match(/\/.*\//)) { return 'patterns not supported'; }
          }
        }
        var err = parseArgs();
        if (err) {
          showConfirm(cm, err + ': ' + params.argString);
          return;
        }
        var lineStart = params.line || cm.firstLine();
        var lineEnd = params.lineEnd || params.line || cm.lastLine();
        if (lineStart == lineEnd) { return; }
        var curStart = Pos(lineStart, 0);
        var curEnd = Pos(lineEnd, lineLength(cm, lineEnd));
        var text = cm.getRange(curStart, curEnd).split('\n');
        var numberRegex = (number == 'decimal') ? /(-?)([\d]+)/ :
           (number == 'hex') ? /(-?)(?:0x)?([0-9a-f]+)/i :
           (number == 'octal') ? /([0-7]+)/ : null;
        var radix = (number == 'decimal') ? 10 : (number == 'hex') ? 16 : (number == 'octal') ? 8 : null;
        var numPart = [], textPart = [];
        if (number) {
          for (var i = 0; i < text.length; i++) {
            if (numberRegex.exec(text[i])) {
              numPart.push(text[i]);
            } else {
              textPart.push(text[i]);
            }
          }
        } else {
          textPart = text;
        }
        function compareFn(a, b) {
          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
          if (ignoreCase) { a = a.toLowerCase(); b = b.toLowerCase(); }
          var anum = number && numberRegex.exec(a);
          var bnum = number && numberRegex.exec(b);
          if (!anum) { return a < b ? -1 : 1; }
          anum = parseInt((anum[1] + anum[2]).toLowerCase(), radix);
          bnum = parseInt((bnum[1] + bnum[2]).toLowerCase(), radix);
          return anum - bnum;
        }
        numPart.sort(compareFn);
        textPart.sort(compareFn);
        text = (!reverse) ? textPart.concat(numPart) : numPart.concat(textPart);
        if (unique) { // Remove duplicate lines
          var textOld = text;
          var lastLine;
          text = [];
          for (var i = 0; i < textOld.length; i++) {
            if (textOld[i] != lastLine) {
              text.push(textOld[i]);
            }
            lastLine = textOld[i];
          }
        }
        cm.replaceRange(text.join('\n'), curStart, curEnd);
      },
      global: function(cm, params) {
        var argString = params.argString;
        if (!argString) {
          showConfirm(cm, 'Regular Expression missing from global');
          return;
        }
        var lineStart = (params.line !== undefined) ? params.line : cm.firstLine();
        var lineEnd = params.lineEnd || params.line || cm.lastLine();
        var tokens = splitBySlash(argString);
        var regexPart = argString, cmd;
        if (tokens.length) {
          regexPart = tokens[0];
          cmd = tokens.slice(1, tokens.length).join('/');
        }
        if (regexPart) {
          try {
           updateSearchQuery(cm, regexPart, true /** ignoreCase */,
             true /** smartCase */);
          } catch (e) {
           showConfirm(cm, 'Invalid regex: ' + regexPart);
           return;
          }
        }
        var query = getSearchState(cm).getQuery();
        var matchedLines = [], content = '';
        for (var i = lineStart; i <= lineEnd; i++) {
          var matched = query.test(cm.getLine(i));
          if (matched) {
            matchedLines.push(i+1);
            content+= cm.getLine(i) + '<br>';
          }
        }
        if (!cmd) {
          showConfirm(cm, content);
          return;
        }
        var index = 0;
        var nextCommand = function() {
          if (index < matchedLines.length) {
            var command = matchedLines[index] + cmd;
            exCommandDispatcher.processCommand(cm, command, {
              callback: nextCommand
            });
          }
          index++;
        };
        nextCommand();
      },
      substitute: function(cm, params) {
        if (!cm.getSearchCursor) {
          throw new Error('Search feature not available. Requires searchcursor.js or ' +
              'any other getSearchCursor implementation.');
        }
        var argString = params.argString;
        var tokens = argString ? splitBySlash(argString) : [];
        var regexPart, replacePart = '', trailing, flagsPart, count;
        var confirm = false; // Whether to confirm each replace.
        var global = false; // True to replace all instances on a line, false to replace only 1.
        if (tokens.length) {
          regexPart = tokens[0];
          replacePart = tokens[1];
          if (replacePart !== undefined) {
            if (getOption('pcre')) {
              replacePart = unescapeRegexReplace(replacePart);
            } else {
              replacePart = translateRegexReplace(replacePart);
            }
            vimGlobalState.lastSubstituteReplacePart = replacePart;
          }
          trailing = tokens[2] ? tokens[2].split(' ') : [];
        } else {
          if (argString && argString.length) {
            showConfirm(cm, 'Substitutions should be of the form ' +
                ':s/pattern/replace/');
            return;
          }
        }
        if (trailing) {
          flagsPart = trailing[0];
          count = parseInt(trailing[1]);
          if (flagsPart) {
            if (flagsPart.indexOf('c') != -1) {
              confirm = true;
              flagsPart.replace('c', '');
            }
            if (flagsPart.indexOf('g') != -1) {
              global = true;
              flagsPart.replace('g', '');
            }
            regexPart = regexPart + '/' + flagsPart;
          }
        }
        if (regexPart) {
          try {
            updateSearchQuery(cm, regexPart, true /** ignoreCase */,
              true /** smartCase */);
          } catch (e) {
            showConfirm(cm, 'Invalid regex: ' + regexPart);
            return;
          }
        }
        replacePart = replacePart || vimGlobalState.lastSubstituteReplacePart;
        if (replacePart === undefined) {
          showConfirm(cm, 'No previous substitute regular expression');
          return;
        }
        var state = getSearchState(cm);
        var query = state.getQuery();
        var lineStart = (params.line !== undefined) ? params.line : cm.getCursor().line;
        var lineEnd = params.lineEnd || lineStart;
        if (lineStart == cm.firstLine() && lineEnd == cm.lastLine()) {
          lineEnd = Infinity;
        }
        if (count) {
          lineStart = lineEnd;
          lineEnd = lineStart + count - 1;
        }
        var startPos = clipCursorToContent(cm, Pos(lineStart, 0));
        var cursor = cm.getSearchCursor(query, startPos);
        doReplace(cm, confirm, global, lineStart, lineEnd, cursor, query, replacePart, params.callback);
      },
      redo: CodeMirror.commands.redo,
      undo: CodeMirror.commands.undo,
      write: function(cm) {
        if (CodeMirror.commands.save) {
          CodeMirror.commands.save(cm);
        } else {
          cm.save();
        }
      },
      nohlsearch: function(cm) {
        clearSearchHighlight(cm);
      },
      delmarks: function(cm, params) {
        if (!params.argString || !trim(params.argString)) {
          showConfirm(cm, 'Argument acequired');
          return;
        }

        var state = cm.state.vim;
        var stream = new CodeMirror.StringStream(trim(params.argString));
        while (!stream.eol()) {
          stream.eatSpace();
          var count = stream.pos;

          if (!stream.match(/[a-zA-Z]/, false)) {
            showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
            return;
          }

          var sym = stream.next();
          if (stream.match('-', true)) {
            if (!stream.match(/[a-zA-Z]/, false)) {
              showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
              return;
            }

            var startMark = sym;
            var finishMark = stream.next();
            if (isLowerCase(startMark) && isLowerCase(finishMark) ||
                isUpperCase(startMark) && isUpperCase(finishMark)) {
              var start = startMark.charCodeAt(0);
              var finish = finishMark.charCodeAt(0);
              if (start >= finish) {
                showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
                return;
              }
              for (var j = 0; j <= finish - start; j++) {
                var mark = String.fromCharCode(start + j);
                delete state.marks[mark];
              }
            } else {
              showConfirm(cm, 'Invalid argument: ' + startMark + '-');
              return;
            }
          } else {
            delete state.marks[sym];
          }
        }
      }
    };

    var exCommandDispatcher = new ExCommandDispatcher();
    function doReplace(cm, confirm, global, lineStart, lineEnd, searchCursor, query,
        replaceWith, callback) {
      cm.state.vim.exMode = true;
      var done = false;
      var lastPos = searchCursor.from();
      function replaceAll() {
        cm.operation(function() {
          while (!done) {
            replace();
            next();
          }
          stop();
        });
      }
      function replace() {
        var text = cm.getRange(searchCursor.from(), searchCursor.to());
        var newText = text.replace(query, replaceWith);
        searchCursor.replace(newText);
      }
      function next() {
        while(searchCursor.findNext() &&
              isInRange(searchCursor.from(), lineStart, lineEnd)) {
          if (!global && lastPos && searchCursor.from().line == lastPos.line) {
            continue;
          }
          cm.scrollIntoView(searchCursor.from(), 30);
          cm.setSelection(searchCursor.from(), searchCursor.to());
          lastPos = searchCursor.from();
          done = false;
          return;
        }
        done = true;
      }
      function stop(close) {
        if (close) { close(); }
        cm.focus();
        if (lastPos) {
          cm.setCursor(lastPos);
          var vim = cm.state.vim;
          vim.exMode = false;
          vim.lastHPos = vim.lastHSPos = lastPos.ch;
        }
        if (callback) { callback(); }
      }
      function onPromptKeyDown(e, _value, close) {
        CodeMirror.e_stop(e);
        var keyName = CodeMirror.keyName(e);
        switch (keyName) {
          case 'Y':
            replace(); next(); break;
          case 'N':
            next(); break;
          case 'A':
            var savedCallback = callback;
            callback = undefined;
            cm.operation(replaceAll);
            callback = savedCallback;
            break;
          case 'L':
            replace();
          case 'Q':
          case 'Esc':
          case 'Ctrl-C':
          case 'Ctrl-[':
            stop(close);
            break;
        }
        if (done) { stop(close); }
        return true;
      }
      next();
      if (done) {
        showConfirm(cm, 'No matches for ' + query.source);
        return;
      }
      if (!confirm) {
        replaceAll();
        if (callback) { callback(); }
        return;
      }
      showPrompt(cm, {
        prefix: 'replace with <strong>' + replaceWith + '</strong> (y/n/a/q/l)',
        onKeyDown: onPromptKeyDown
      });
    }

    CodeMirror.keyMap.vim = {
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    function exitInsertMode(cm) {
      var vim = cm.state.vim;
      var macroModeState = vimGlobalState.macroModeState;
      var insertModeChangeRegister = vimGlobalState.registerController.getRegister('.');
      var isPlaying = macroModeState.isPlaying;
      var lastChange = macroModeState.lastInsertModeChanges;
      var text = [];
      if (!isPlaying) {
        var selLength = lastChange.inVisualBlock ? vim.lastSelection.visualBlock.height : 1;
        var changes = lastChange.changes;
        var text = [];
        var i = 0;
        while (i < changes.length) {
          text.push(changes[i]);
          if (changes[i] instanceof InsertModeKey) {
             i++;
          } else {
             i+= selLength;
          }
        }
        lastChange.changes = text;
        cm.off('change', onChange);
        CodeMirror.off(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
      }
      if (!isPlaying && vim.insertModeRepeat > 1) {
        repeatLastEdit(cm, vim, vim.insertModeRepeat - 1,
            true /** repeatForInsert */);
        vim.lastEditInputState.repeatOverride = vim.insertModeRepeat;
      }
      delete vim.insertModeRepeat;
      vim.insertMode = false;
      cm.setCursor(cm.getCursor().line, cm.getCursor().ch-1);
      cm.setOption('keyMap', 'vim');
      cm.setOption('disableInput', true);

      lastChange.overwrite = cm.state.overwrite;
      cm.toggleOverwrite(false); // exit replace mode if we were in it.
      insertModeChangeRegister.setText(lastChange.changes.join(''));
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      if (macroModeState.isRecording) {
        logInsertModeChange(macroModeState);
      }
    }

    function _mapCommand(command) {
      defaultKeymap.unshift(command);
    }

    function mapCommand(keys, type, name, args, extra) {
      var command = {keys: keys, type: type};
      command[type] = name;
      command[type + "Args"] = args;
      for (var key in extra)
        command[key] = extra[key];
      _mapCommand(command);
    }
    defineOption('insertModeEscKeysTimeout', 200, 'number');

    CodeMirror.keyMap['vim-insert'] = {
      'Ctrl-N': 'autocomplete',
      'Ctrl-P': 'autocomplete',
      'Enter': function(cm) {
        var fn = CodeMirror.commands.newlineAndIndentContinueComment ||
            CodeMirror.commands.newlineAndIndent;
        fn(cm);
      },
      fallthrough: ['default'],
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    CodeMirror.keyMap['vim-replace'] = {
      'Backspace': 'goCharLeft',
      fallthrough: ['vim-insert'],
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    function executeMacroRegister(cm, vim, macroModeState, registerName) {
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (registerName == ':') {
        if (register.keyBuffer[0]) {
          exCommandDispatcher.processCommand(cm, register.keyBuffer[0]);
        }
        macroModeState.isPlaying = false;
        return;
      }
      var keyBuffer = register.keyBuffer;
      var imc = 0;
      macroModeState.isPlaying = true;
      macroModeState.replaySearchQueries = register.searchQueries.slice(0);
      for (var i = 0; i < keyBuffer.length; i++) {
        var text = keyBuffer[i];
        var match, key;
        while (text) {
          match = (/<\w+-.+?>|<\w+>|./).exec(text);
          key = match[0];
          text = text.substring(match.index + key.length);
          CodeMirror.Vim.handleKey(cm, key, 'macro');
          if (vim.insertMode) {
            var changes = register.insertModeChanges[imc++].changes;
            vimGlobalState.macroModeState.lastInsertModeChanges.changes =
                changes;
            repeatInsertModeChanges(cm, changes, 1);
            exitInsertMode(cm);
          }
        }
      }
      macroModeState.isPlaying = false;
    }

    function logKey(macroModeState, key) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register) {
        register.pushText(key);
      }
    }

    function logInsertModeChange(macroModeState) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register && register.pushInsertModeChanges) {
        register.pushInsertModeChanges(macroModeState.lastInsertModeChanges);
      }
    }

    function logSearchQuery(macroModeState, query) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register && register.pushSearchQuery) {
        register.pushSearchQuery(query);
      }
    }
    function onChange(_cm, changeObj) {
      var macroModeState = vimGlobalState.macroModeState;
      var lastChange = macroModeState.lastInsertModeChanges;
      if (!macroModeState.isPlaying) {
        while(changeObj) {
          lastChange.expectCursorActivityForChange = true;
          if (changeObj.origin == '+input' || changeObj.origin == 'paste'
              || changeObj.origin === undefined /* only in testing */) {
            var text = changeObj.text.join('\n');
            if (lastChange.maybeReset) {
              lastChange.changes = [];
              lastChange.maybeReset = false;
            }
            lastChange.changes.push(text);
          }
          changeObj = changeObj.next;
        }
      }
    }
    function onCursorActivity(cm) {
      var vim = cm.state.vim;
      if (vim.insertMode) {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.isPlaying) { return; }
        var lastChange = macroModeState.lastInsertModeChanges;
        if (lastChange.expectCursorActivityForChange) {
          lastChange.expectCursorActivityForChange = false;
        } else {
          lastChange.maybeReset = true;
        }
      } else if (!cm.curOp.isVimOp) {
        handleExternalSelection(cm, vim);
      }
      if (vim.visualMode) {
        updateFakeCursor(cm);
      }
    }
    function updateFakeCursor(cm) {
      var vim = cm.state.vim;
      var from = clipCursorToContent(cm, copyCursor(vim.sel.head));
      var to = offsetCursor(from, 0, 1);
      if (vim.fakeCursor) {
        vim.fakeCursor.clear();
      }
      vim.fakeCursor = cm.markText(from, to, {className: 'cm-animate-fat-cursor'});
    }
    function handleExternalSelection(cm, vim) {
      var anchor = cm.getCursor('anchor');
      var head = cm.getCursor('head');
      if (vim.visualMode && !cm.somethingSelected()) {
        exitVisualMode(cm, false);
      } else if (!vim.visualMode && !vim.insertMode && cm.somethingSelected()) {
        vim.visualMode = true;
        vim.visualLine = false;
        CodeMirror.signal(cm, "vim-mode-change", {mode: "visual"});
      }
      if (vim.visualMode) {
        var headOffset = !cursorIsBefore(head, anchor) ? -1 : 0;
        var anchorOffset = cursorIsBefore(head, anchor) ? -1 : 0;
        head = offsetCursor(head, 0, headOffset);
        anchor = offsetCursor(anchor, 0, anchorOffset);
        vim.sel = {
          anchor: anchor,
          head: head
        };
        updateMark(cm, vim, '<', cursorMin(head, anchor));
        updateMark(cm, vim, '>', cursorMax(head, anchor));
      } else if (!vim.insertMode) {
        vim.lastHPos = cm.getCursor().ch;
      }
    }
    function InsertModeKey(keyName) {
      this.keyName = keyName;
    }
    function onKeyEventTargetKeyDown(e) {
      var macroModeState = vimGlobalState.macroModeState;
      var lastChange = macroModeState.lastInsertModeChanges;
      var keyName = CodeMirror.keyName(e);
      if (!keyName) { return; }
      function onKeyFound() {
        if (lastChange.maybeReset) {
          lastChange.changes = [];
          lastChange.maybeReset = false;
        }
        lastChange.changes.push(new InsertModeKey(keyName));
        return true;
      }
      if (keyName.indexOf('Delete') != -1 || keyName.indexOf('Backspace') != -1) {
        CodeMirror.lookupKey(keyName, 'vim-insert', onKeyFound);
      }
    }
    function repeatLastEdit(cm, vim, repeat, repeatForInsert) {
      var macroModeState = vimGlobalState.macroModeState;
      macroModeState.isPlaying = true;
      var isAction = !!vim.lastEditActionCommand;
      var cachedInputState = vim.inputState;
      function repeatCommand() {
        if (isAction) {
          commandDispatcher.processAction(cm, vim, vim.lastEditActionCommand);
        } else {
          commandDispatcher.evalInput(cm, vim);
        }
      }
      function repeatInsert(repeat) {
        if (macroModeState.lastInsertModeChanges.changes.length > 0) {
          repeat = !vim.lastEditActionCommand ? 1 : repeat;
          var changeObject = macroModeState.lastInsertModeChanges;
          repeatInsertModeChanges(cm, changeObject.changes, repeat, changeObject.overwrite);
        }
      }
      vim.inputState = vim.lastEditInputState;
      if (isAction && vim.lastEditActionCommand.interlaceInsertRepeat) {
        for (var i = 0; i < repeat; i++) {
          repeatCommand();
          repeatInsert(1);
        }
      } else {
        if (!repeatForInsert) {
          repeatCommand();
        }
        repeatInsert(repeat);
      }
      vim.inputState = cachedInputState;
      if (vim.insertMode && !repeatForInsert) {
        exitInsertMode(cm);
      }
      macroModeState.isPlaying = false;
    }

    function repeatInsertModeChanges(cm, changes, repeat, overwrite) {
      function keyHandler(binding) {
        if (typeof binding == 'string') {
          CodeMirror.commands[binding](cm);
        } else {
          binding(cm);
        }
        return true;
      }
      var head = cm.getCursor('head');
      var inVisualBlock = vimGlobalState.macroModeState.lastInsertModeChanges.inVisualBlock;
      if (inVisualBlock) {
        var vim = cm.state.vim;
        var lastSel = vim.lastSelection;
        var offset = getOffset(lastSel.anchor, lastSel.head);
        selectForInsert(cm, head, offset.line + 1);
        repeat = cm.listSelections().length;
        cm.setCursor(head);
      }
      for (var i = 0; i < repeat; i++) {
        if (inVisualBlock) {
          cm.setCursor(offsetCursor(head, i, 0));
        }
        for (var j = 0; j < changes.length; j++) {
          var change = changes[j];
          if (change instanceof InsertModeKey) {
            CodeMirror.lookupKey(change.keyName, 'vim-insert', keyHandler);
          } else {
            var cur = cm.getCursor();
            var end = cur;
            if (overwrite && !/\n/.test(change)) {
              end = offsetCursor(cur, 0, change.length);
            }
            cm.replaceRange(change, cur, end);
          }
        }
      }
      if (inVisualBlock) {
        cm.setCursor(offsetCursor(head, 0, 1));
      }
    }

    resetVimGlobalState();
  CodeMirror.Vim = Vim();

  Vim = CodeMirror.Vim;

  var specialKey = {'return':'CR',backspace:'BS','delete':'Del',esc:'Esc',
    left:'Left',right:'Right',up:'Up',down:'Down',space: 'Space',
    home:'Home',end:'End',pageup:'PageUp',pagedown:'PageDown', enter: 'CR'
  };
  function lookupKey(hashId, key, e) {
    if (key.length > 1 && key[0] == "n") {
      key = key.replace("numpad", "");
    }
    key = specialKey[key] || key;
    var name = '';
    if (e.ctrlKey) { name += 'C-'; }
    if (e.altKey) { name += 'A-'; }
    if (e.shiftKey) { name += 'S-'; }

    name += key;
    if (name.length > 1) { name = '<' + name + '>'; }
    return name;
  }
  var handleKey = Vim.handleKey.bind(Vim);
  Vim.handleKey = function(cm, key, origin) {
    return cm.operation(function() {
      return handleKey(cm, key, origin);
    }, true);
  }
  function cloneVimState(state) {
    var n = new state.constructor();
    Object.keys(state).forEach(function(key) {
      var o = state[key];
      if (Array.isArray(o))
        o = o.slice();
      else if (o && typeof o == "object" && o.constructor != Object)
        o = cloneVimState(o);
      n[key] = o;
    });
    if (state.sel) {
      n.sel = {
        head: state.sel.head && copyCursor(state.sel.head),
        anchor: state.sel.anchor && copyCursor(state.sel.anchor)
      };
    }
    return n;
  }
  function multiSelectHandleKey(cm, key, origin) {
    var isHandled = false;
    var vim = Vim.maybeInitVimState_(cm);
    var visualBlock = vim.visualBlock || vim.wasInVisualBlock;
    if (vim.wasInVisualBlock && !cm.ace.inMultiSelectMode) {
      vim.wasInVisualBlock = false;
    } else if (cm.ace.inMultiSelectMode && vim.visualBlock) {
       vim.wasInVisualBlock = true;
    }
    
    if (key == '<Esc>' && !vim.insertMode && !vim.visualMode && cm.ace.inMultiSelectMode) {
      cm.ace.exitMultiSelectMode();
    } else if (visualBlock || !cm.ace.inMultiSelectMode || cm.ace.inVirtualSelectionMode) {
      isHandled = Vim.handleKey(cm, key, origin);
    } else {
      var old = cloneVimState(vim);
      cm.operation(function() {
        cm.ace.forEachSelection(function() {
          var sel = cm.ace.selection;
          cm.state.vim.lastHPos = sel.$desiredColumn == null ? sel.lead.column : sel.$desiredColumn;
          var head = cm.getCursor("head");
          var anchor = cm.getCursor("anchor");
          var headOffset = !cursorIsBefore(head, anchor) ? -1 : 0;
          var anchorOffset = cursorIsBefore(head, anchor) ? -1 : 0;
          head = offsetCursor(head, 0, headOffset);
          anchor = offsetCursor(anchor, 0, anchorOffset);
          cm.state.vim.sel.head = head;
          cm.state.vim.sel.anchor = anchor;
          
          isHandled = handleKey(cm, key, origin);
          sel.$desiredColumn = cm.state.vim.lastHPos == -1 ? null : cm.state.vim.lastHPos;
          if (cm.virtualSelectionMode()) {
            cm.state.vim = cloneVimState(old);
          }
        });
        if (cm.curOp.cursorActivity && !isHandled)
          cm.curOp.cursorActivity = false;
      }, true);
    }
    return isHandled;
  }
  exports.CodeMirror = CodeMirror;
  var getVim = Vim.maybeInitVimState_;
  exports.handler = {
    $id: "ace/keyboard/vim",
    drawCursor: function(style, pixelPos, config, sel, session) {
      var vim = this.state.vim || {};
      var w = config.characterWidth;
      var h = config.lineHeight;
      var top = pixelPos.top;
      var left = pixelPos.left;
      if (!vim.insertMode) {
        var isbackwards = !sel.cursor 
            ? session.selection.isBackwards() || session.selection.isEmpty()
            : Range.comparePoints(sel.cursor, sel.start) <= 0;
        if (!isbackwards && left > w)
          left -= w;
      }     
      if (!vim.insertMode && vim.status) {
        h = h / 2;
        top += h;
      }
      style.left = left + "px";
      style.top =  top + "px";
      style.width = w + "px";
      style.height = h + "px";
    },
    handleKeyboard: function(data, hashId, key, keyCode, e) {
      var editor = data.editor;
      var cm = editor.state.cm;
      var vim = getVim(cm);
      if (keyCode == -1) return;
      
      if (key == "c" && hashId == 1) { // key == "ctrl-c"
        if (!useragent.isMac && editor.getCopyText()) {
          editor.once("copy", function() {
            editor.selection.clearSelection();
          });
          return {command: "null", passEvent: true};
        }
      } else if (!vim.insertMode) {
        if (useragent.isMac && this.handleMacRepeat(data, hashId, key)) {
          hashId = -1;
          key = data.inputChar;
        }
      }
      
      if (hashId == -1 || hashId & 1 || hashId === 0 && key.length > 1) {
        var insertMode = vim.insertMode;
        var name = lookupKey(hashId, key, e || {});
        if (vim.status == null)
          vim.status = "";
        var isHandled = multiSelectHandleKey(cm, name, 'user');
        vim = getVim(cm); // may be changed by multiSelectHandleKey
        if (isHandled && vim.status != null)
          vim.status += name;
        else if (vim.status == null)
          vim.status = "";
        cm._signal("changeStatus");
        if (!isHandled && (hashId != -1 || insertMode))
          return;
        return {command: "null", passEvent: !isHandled};
      }
    },
    attach: function(editor) {
      if (!editor.state) editor.state = {};
      var cm = new CodeMirror(editor);
      editor.state.cm = cm;
      editor.$vimModeHandler = this;
      CodeMirror.keyMap.vim.attach(cm);
      getVim(cm).status = null;
      cm.on('vim-command-done', function() {
        if (cm.virtualSelectionMode()) return;
        getVim(cm).status = null;
        cm.ace._signal("changeStatus");
        cm.ace.session.markUndoGroup();
      });
      cm.on("changeStatus", function() {
        cm.ace.renderer.updateCursor();
        cm.ace._signal("changeStatus");
      });
      cm.on("vim-mode-change", function() {
        if (cm.virtualSelectionMode()) return;
        cm.ace.renderer.setStyle("normal-mode", !getVim(cm).insertMode);
        cm._signal("changeStatus");
      });
      cm.ace.renderer.setStyle("normal-mode", !getVim(cm).insertMode);
      editor.renderer.$cursorLayer.drawCursor = this.drawCursor.bind(cm);
      this.updateMacCompositionHandlers(editor, true);
    },
    detach: function(editor) {
      var cm = editor.state.cm;
      CodeMirror.keyMap.vim.detach(cm);
      cm.destroy();
      editor.state.cm = null;
      editor.$vimModeHandler = null;
      editor.renderer.$cursorLayer.drawCursor = null;
      editor.renderer.setStyle("normal-mode", false);
      this.updateMacCompositionHandlers(editor, false);
    },
    getStatusText: function(editor) {
      var cm = editor.state.cm;
      var vim = getVim(cm);
      if (vim.insertMode)
        return "INSERT";
      var status = "";
      if (vim.visualMode) {
        status += "VISUAL";
        if (vim.visualLine)
          status += " LINE";
        if (vim.visualBlock)
          status += " BLOCK";
      }
      if (vim.status)
        status += (status ? " " : "") + vim.status;
      return status;
    },
    handleMacRepeat: function(data, hashId, key) {
      if (hashId == -1) {
        data.inputChar = key;
        data.lastEvent = "input";
      } else if (data.inputChar && data.$lastHash == hashId && data.$lastKey == key) {
        if (data.lastEvent == "input") {
          data.lastEvent = "input1";
        } else if (data.lastEvent == "input1") {
          return true;
        }
      } else {
        data.$lastHash = hashId;
        data.$lastKey = key;
        data.lastEvent = "keypress";
      }
    },
    updateMacCompositionHandlers: function(editor, enable) {
      var onCompositionUpdateOverride = function(text) {
        var cm = editor.state.cm;
        var vim = getVim(cm);
        if (!vim.insertMode) {
          var el = this.textInput.getElement();
          el.blur();
          el.focus();
          el.value = text;
        } else {
          this.onCompositionUpdateOrig(text);
        }
      };
      var onCompositionStartOverride = function(text) {
        var cm = editor.state.cm;
        var vim = getVim(cm);
        if (!vim.insertMode) {
          this.onCompositionStartOrig(text);
        }
      };
      if (enable) {
        if (!editor.onCompositionUpdateOrig) {
          editor.onCompositionUpdateOrig = editor.onCompositionUpdate;
          editor.onCompositionUpdate = onCompositionUpdateOverride;
          editor.onCompositionStartOrig = editor.onCompositionStart;
          editor.onCompositionStart = onCompositionStartOverride;
        }
      } else {
        if (editor.onCompositionUpdateOrig) {
          editor.onCompositionUpdate = editor.onCompositionUpdateOrig;
          editor.onCompositionUpdateOrig = null;
          editor.onCompositionStart = editor.onCompositionStartOrig;
          editor.onCompositionStartOrig = null;
        }
      }
    }
  };
  var renderVirtualNumbers = {
    getText: function(session, row) {
      return (Math.abs(session.selection.lead.row - row)  || (row + 1 + (row < 9? "\xb7" : "" ))) + "";
    },
    getWidth: function(session, lastLineNumber, config) {
      return session.getLength().toString().length * config.characterWidth;
    },
    update: function(e, editor) {
      editor.renderer.$loop.schedule(editor.renderer.CHANGE_GUTTER);
    },
    attach: function(editor) {
      editor.renderer.$gutterLayer.$renderer = this;
      editor.on("changeSelection", this.update);
    },
    detach: function(editor) {
      editor.renderer.$gutterLayer.$renderer = null;
      editor.off("changeSelection", this.update);
    }
  };
  Vim.defineOption({
    name: "wrap",
    set: function(value, cm) {
      if (cm) {cm.ace.setOption("wrap", value)}
    },
    type: "boolean"
  }, false);
  Vim.defineEx('write', 'w', function() {
    console.log(':write is not implemented')
  });
  defaultKeymap.push(
    { keys: 'zc', type: 'action', action: 'fold', actionArgs: { open: false } },
    { keys: 'zC', type: 'action', action: 'fold', actionArgs: { open: false, all: true } },
    { keys: 'zo', type: 'action', action: 'fold', actionArgs: { open: true } },
    { keys: 'zO', type: 'action', action: 'fold', actionArgs: { open: true, all: true } },
    { keys: 'za', type: 'action', action: 'fold', actionArgs: { toggle: true } },
    { keys: 'zA', type: 'action', action: 'fold', actionArgs: { toggle: true, all: true } },
    { keys: 'zf', type: 'action', action: 'fold', actionArgs: { open: true, all: true } },
    { keys: 'zd', type: 'action', action: 'fold', actionArgs: { open: true, all: true } },
    
    { keys: '<C-A-k>', type: 'action', action: 'aceCommand', actionArgs: { name: "addCursorAbove" } },
    { keys: '<C-A-j>', type: 'action', action: 'aceCommand', actionArgs: { name: "addCursorBelow" } },
    { keys: '<C-A-S-k>', type: 'action', action: 'aceCommand', actionArgs: { name: "addCursorAboveSkipCurrent" } },
    { keys: '<C-A-S-j>', type: 'action', action: 'aceCommand', actionArgs: { name: "addCursorBelowSkipCurrent" } },
    { keys: '<C-A-h>', type: 'action', action: 'aceCommand', actionArgs: { name: "selectMoreBefore" } },
    { keys: '<C-A-l>', type: 'action', action: 'aceCommand', actionArgs: { name: "selectMoreAfter" } },
    { keys: '<C-A-S-h>', type: 'action', action: 'aceCommand', actionArgs: { name: "selectNextBefore" } },
    { keys: '<C-A-S-l>', type: 'action', action: 'aceCommand', actionArgs: { name: "selectNextAfter" } }
  );
  actions.aceCommand = function(cm, actionArgs, vim) {
    cm.vimCmd = actionArgs;
    if (cm.ace.inVirtualSelectionMode)
      cm.ace.on("beforeEndOperation", delayedExecAceCommand);
    else
      delayedExecAceCommand(null, cm.ace);
  };
  function delayedExecAceCommand(op, ace) {
    ace.off("beforeEndOperation", delayedExecAceCommand);
    var cmd = ace.state.cm.vimCmd;
    if (cmd) {
      ace.execCommand(cmd.exec ? cmd : cmd.name, cmd.args);
    }
    ace.curOp = ace.prevOp;
  }
  actions.fold = function(cm, actionArgs, vim) {
    cm.ace.execCommand(['toggleFoldWidget', 'toggleFoldWidget', 'foldOther', 'unfoldall'
      ][(actionArgs.all ? 2 : 0) + (actionArgs.open ? 1 : 0)]);
  };

  exports.handler.defaultKeymap = defaultKeymap;
  exports.handler.actions = actions;
  exports.Vim = Vim;
  
  Vim.map("Y", "yy", "normal");
});


/***/ }),
/* 599 */
/*!*******************************************!*\
  !*** ./node_modules/brace/theme/xcode.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/xcode",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = false;
exports.cssClass = "ace-xcode";
exports.cssText = "\
.ace-xcode .ace_gutter {\
background: #e8e8e8;\
color: #333\
}\
.ace-xcode .ace_print-margin {\
width: 1px;\
background: #e8e8e8\
}\
.ace-xcode {\
background-color: #FFFFFF;\
color: #000000\
}\
.ace-xcode .ace_cursor {\
color: #000000\
}\
.ace-xcode .ace_marker-layer .ace_selection {\
background: #B5D5FF\
}\
.ace-xcode.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px #FFFFFF;\
}\
.ace-xcode .ace_marker-layer .ace_step {\
background: rgb(198, 219, 174)\
}\
.ace-xcode .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid #BFBFBF\
}\
.ace-xcode .ace_marker-layer .ace_active-line {\
background: rgba(0, 0, 0, 0.071)\
}\
.ace-xcode .ace_gutter-active-line {\
background-color: rgba(0, 0, 0, 0.071)\
}\
.ace-xcode .ace_marker-layer .ace_selected-word {\
border: 1px solid #B5D5FF\
}\
.ace-xcode .ace_constant.ace_language,\
.ace-xcode .ace_keyword,\
.ace-xcode .ace_meta,\
.ace-xcode .ace_variable.ace_language {\
color: #C800A4\
}\
.ace-xcode .ace_invisible {\
color: #BFBFBF\
}\
.ace-xcode .ace_constant.ace_character,\
.ace-xcode .ace_constant.ace_other {\
color: #275A5E\
}\
.ace-xcode .ace_constant.ace_numeric {\
color: #3A00DC\
}\
.ace-xcode .ace_entity.ace_other.ace_attribute-name,\
.ace-xcode .ace_support.ace_constant,\
.ace-xcode .ace_support.ace_function {\
color: #450084\
}\
.ace-xcode .ace_fold {\
background-color: #C800A4;\
border-color: #000000\
}\
.ace-xcode .ace_entity.ace_name.ace_tag,\
.ace-xcode .ace_support.ace_class,\
.ace-xcode .ace_support.ace_type {\
color: #790EAD\
}\
.ace-xcode .ace_storage {\
color: #C900A4\
}\
.ace-xcode .ace_string {\
color: #DF0002\
}\
.ace-xcode .ace_comment {\
color: #008E00\
}\
.ace-xcode .ace_indent-guide {\
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAE0lEQVQImWP4////f4bLly//BwAmVgd1/w11/gAAAABJRU5ErkJggg==) right repeat-y\
}";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 600 */
/*!**********************************************!*\
  !*** ./node_modules/brace/theme/twilight.js ***!
  \**********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/twilight",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = true;
exports.cssClass = "ace-twilight";
exports.cssText = ".ace-twilight .ace_gutter {\
background: #232323;\
color: #E2E2E2\
}\
.ace-twilight .ace_print-margin {\
width: 1px;\
background: #232323\
}\
.ace-twilight {\
background-color: #141414;\
color: #F8F8F8\
}\
.ace-twilight .ace_cursor {\
color: #A7A7A7\
}\
.ace-twilight .ace_marker-layer .ace_selection {\
background: rgba(221, 240, 255, 0.20)\
}\
.ace-twilight.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px #141414;\
}\
.ace-twilight .ace_marker-layer .ace_step {\
background: rgb(102, 82, 0)\
}\
.ace-twilight .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid rgba(255, 255, 255, 0.25)\
}\
.ace-twilight .ace_marker-layer .ace_active-line {\
background: rgba(255, 255, 255, 0.031)\
}\
.ace-twilight .ace_gutter-active-line {\
background-color: rgba(255, 255, 255, 0.031)\
}\
.ace-twilight .ace_marker-layer .ace_selected-word {\
border: 1px solid rgba(221, 240, 255, 0.20)\
}\
.ace-twilight .ace_invisible {\
color: rgba(255, 255, 255, 0.25)\
}\
.ace-twilight .ace_keyword,\
.ace-twilight .ace_meta {\
color: #CDA869\
}\
.ace-twilight .ace_constant,\
.ace-twilight .ace_constant.ace_character,\
.ace-twilight .ace_constant.ace_character.ace_escape,\
.ace-twilight .ace_constant.ace_other,\
.ace-twilight .ace_heading,\
.ace-twilight .ace_markup.ace_heading,\
.ace-twilight .ace_support.ace_constant {\
color: #CF6A4C\
}\
.ace-twilight .ace_invalid.ace_illegal {\
color: #F8F8F8;\
background-color: rgba(86, 45, 86, 0.75)\
}\
.ace-twilight .ace_invalid.ace_deprecated {\
text-decoration: underline;\
font-style: italic;\
color: #D2A8A1\
}\
.ace-twilight .ace_support {\
color: #9B859D\
}\
.ace-twilight .ace_fold {\
background-color: #AC885B;\
border-color: #F8F8F8\
}\
.ace-twilight .ace_support.ace_function {\
color: #DAD085\
}\
.ace-twilight .ace_list,\
.ace-twilight .ace_markup.ace_list,\
.ace-twilight .ace_storage {\
color: #F9EE98\
}\
.ace-twilight .ace_entity.ace_name.ace_function,\
.ace-twilight .ace_meta.ace_tag,\
.ace-twilight .ace_variable {\
color: #AC885B\
}\
.ace-twilight .ace_string {\
color: #8F9D6A\
}\
.ace-twilight .ace_string.ace_regexp {\
color: #E9C062\
}\
.ace-twilight .ace_comment {\
font-style: italic;\
color: #5F5A60\
}\
.ace-twilight .ace_variable {\
color: #7587A6\
}\
.ace-twilight .ace_xml-pe {\
color: #494949\
}\
.ace-twilight .ace_indent-guide {\
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAEklEQVQImWMQERFpYLC1tf0PAAgOAnPnhxyiAAAAAElFTkSuQmCC) right repeat-y\
}";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 601 */
/*!**********************************************!*\
  !*** ./node_modules/brace/theme/terminal.js ***!
  \**********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/terminal",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = true;
exports.cssClass = "ace-terminal-theme";
exports.cssText = ".ace-terminal-theme .ace_gutter {\
background: #1a0005;\
color: steelblue\
}\
.ace-terminal-theme .ace_print-margin {\
width: 1px;\
background: #1a1a1a\
}\
.ace-terminal-theme {\
background-color: black;\
color: #DEDEDE\
}\
.ace-terminal-theme .ace_cursor {\
color: #9F9F9F\
}\
.ace-terminal-theme .ace_marker-layer .ace_selection {\
background: #424242\
}\
.ace-terminal-theme.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px black;\
}\
.ace-terminal-theme .ace_marker-layer .ace_step {\
background: rgb(0, 0, 0)\
}\
.ace-terminal-theme .ace_marker-layer .ace_bracket {\
background: #090;\
}\
.ace-terminal-theme .ace_marker-layer .ace_bracket-start {\
background: #090;\
}\
.ace-terminal-theme .ace_marker-layer .ace_bracket-unmatched {\
margin: -1px 0 0 -1px;\
border: 1px solid #900\
}\
.ace-terminal-theme .ace_marker-layer .ace_active-line {\
background: #2A2A2A\
}\
.ace-terminal-theme .ace_gutter-active-line {\
background-color: #2A112A\
}\
.ace-terminal-theme .ace_marker-layer .ace_selected-word {\
border: 1px solid #424242\
}\
.ace-terminal-theme .ace_invisible {\
color: #343434\
}\
.ace-terminal-theme .ace_keyword,\
.ace-terminal-theme .ace_meta,\
.ace-terminal-theme .ace_storage,\
.ace-terminal-theme .ace_storage.ace_type,\
.ace-terminal-theme .ace_support.ace_type {\
color: tomato\
}\
.ace-terminal-theme .ace_keyword.ace_operator {\
color: deeppink\
}\
.ace-terminal-theme .ace_constant.ace_character,\
.ace-terminal-theme .ace_constant.ace_language,\
.ace-terminal-theme .ace_constant.ace_numeric,\
.ace-terminal-theme .ace_keyword.ace_other.ace_unit,\
.ace-terminal-theme .ace_support.ace_constant,\
.ace-terminal-theme .ace_variable.ace_parameter {\
color: #E78C45\
}\
.ace-terminal-theme .ace_constant.ace_other {\
color: gold\
}\
.ace-terminal-theme .ace_invalid {\
color: yellow;\
background-color: red\
}\
.ace-terminal-theme .ace_invalid.ace_deprecated {\
color: #CED2CF;\
background-color: #B798BF\
}\
.ace-terminal-theme .ace_fold {\
background-color: #7AA6DA;\
border-color: #DEDEDE\
}\
.ace-terminal-theme .ace_entity.ace_name.ace_function,\
.ace-terminal-theme .ace_support.ace_function,\
.ace-terminal-theme .ace_variable {\
color: #7AA6DA\
}\
.ace-terminal-theme .ace_support.ace_class,\
.ace-terminal-theme .ace_support.ace_type {\
color: #E7C547\
}\
.ace-terminal-theme .ace_heading,\
.ace-terminal-theme .ace_string {\
color: #B9CA4A\
}\
.ace-terminal-theme .ace_entity.ace_name.ace_tag,\
.ace-terminal-theme .ace_entity.ace_other.ace_attribute-name,\
.ace-terminal-theme .ace_meta.ace_tag,\
.ace-terminal-theme .ace_string.ace_regexp,\
.ace-terminal-theme .ace_variable {\
color: #D54E53\
}\
.ace-terminal-theme .ace_comment {\
color: orangered\
}\
.ace-terminal-theme .ace_indent-guide {\
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAEklEQVQImWNgYGBgYLBWV/8PAAK4AYnhiq+xAAAAAElFTkSuQmCC) right repeat-y;\
}\
";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 602 */
/*!*****************************************************!*\
  !*** ./node_modules/brace/theme/solarized_light.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/solarized_light",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = false;
exports.cssClass = "ace-solarized-light";
exports.cssText = ".ace-solarized-light .ace_gutter {\
background: #fbf1d3;\
color: #333\
}\
.ace-solarized-light .ace_print-margin {\
width: 1px;\
background: #e8e8e8\
}\
.ace-solarized-light {\
background-color: #FDF6E3;\
color: #586E75\
}\
.ace-solarized-light .ace_cursor {\
color: #000000\
}\
.ace-solarized-light .ace_marker-layer .ace_selection {\
background: rgba(7, 54, 67, 0.09)\
}\
.ace-solarized-light.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px #FDF6E3;\
}\
.ace-solarized-light .ace_marker-layer .ace_step {\
background: rgb(255, 255, 0)\
}\
.ace-solarized-light .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid rgba(147, 161, 161, 0.50)\
}\
.ace-solarized-light .ace_marker-layer .ace_active-line {\
background: #EEE8D5\
}\
.ace-solarized-light .ace_gutter-active-line {\
background-color : #EDE5C1\
}\
.ace-solarized-light .ace_marker-layer .ace_selected-word {\
border: 1px solid #073642\
}\
.ace-solarized-light .ace_invisible {\
color: rgba(147, 161, 161, 0.50)\
}\
.ace-solarized-light .ace_keyword,\
.ace-solarized-light .ace_meta,\
.ace-solarized-light .ace_support.ace_class,\
.ace-solarized-light .ace_support.ace_type {\
color: #859900\
}\
.ace-solarized-light .ace_constant.ace_character,\
.ace-solarized-light .ace_constant.ace_other {\
color: #CB4B16\
}\
.ace-solarized-light .ace_constant.ace_language {\
color: #B58900\
}\
.ace-solarized-light .ace_constant.ace_numeric {\
color: #D33682\
}\
.ace-solarized-light .ace_fold {\
background-color: #268BD2;\
border-color: #586E75\
}\
.ace-solarized-light .ace_entity.ace_name.ace_function,\
.ace-solarized-light .ace_entity.ace_name.ace_tag,\
.ace-solarized-light .ace_support.ace_function,\
.ace-solarized-light .ace_variable,\
.ace-solarized-light .ace_variable.ace_language {\
color: #268BD2\
}\
.ace-solarized-light .ace_storage {\
color: #073642\
}\
.ace-solarized-light .ace_string {\
color: #2AA198\
}\
.ace-solarized-light .ace_string.ace_regexp {\
color: #D30102\
}\
.ace-solarized-light .ace_comment,\
.ace-solarized-light .ace_entity.ace_other.ace_attribute-name {\
color: #93A1A1\
}\
.ace-solarized-light .ace_indent-guide {\
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAEklEQVQImWNgYGBgYHjy8NJ/AAjgA5fzQUmBAAAAAElFTkSuQmCC) right repeat-y\
}";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 603 */
/*!****************************************************!*\
  !*** ./node_modules/brace/theme/solarized_dark.js ***!
  \****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/solarized_dark",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = true;
exports.cssClass = "ace-solarized-dark";
exports.cssText = ".ace-solarized-dark .ace_gutter {\
background: #01313f;\
color: #d0edf7\
}\
.ace-solarized-dark .ace_print-margin {\
width: 1px;\
background: #33555E\
}\
.ace-solarized-dark {\
background-color: #002B36;\
color: #93A1A1\
}\
.ace-solarized-dark .ace_entity.ace_other.ace_attribute-name,\
.ace-solarized-dark .ace_storage {\
color: #93A1A1\
}\
.ace-solarized-dark .ace_cursor,\
.ace-solarized-dark .ace_string.ace_regexp {\
color: #D30102\
}\
.ace-solarized-dark .ace_marker-layer .ace_active-line,\
.ace-solarized-dark .ace_marker-layer .ace_selection {\
background: rgba(255, 255, 255, 0.1)\
}\
.ace-solarized-dark.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px #002B36;\
}\
.ace-solarized-dark .ace_marker-layer .ace_step {\
background: rgb(102, 82, 0)\
}\
.ace-solarized-dark .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid rgba(147, 161, 161, 0.50)\
}\
.ace-solarized-dark .ace_gutter-active-line {\
background-color: #0d3440\
}\
.ace-solarized-dark .ace_marker-layer .ace_selected-word {\
border: 1px solid #073642\
}\
.ace-solarized-dark .ace_invisible {\
color: rgba(147, 161, 161, 0.50)\
}\
.ace-solarized-dark .ace_keyword,\
.ace-solarized-dark .ace_meta,\
.ace-solarized-dark .ace_support.ace_class,\
.ace-solarized-dark .ace_support.ace_type {\
color: #859900\
}\
.ace-solarized-dark .ace_constant.ace_character,\
.ace-solarized-dark .ace_constant.ace_other {\
color: #CB4B16\
}\
.ace-solarized-dark .ace_constant.ace_language {\
color: #B58900\
}\
.ace-solarized-dark .ace_constant.ace_numeric {\
color: #D33682\
}\
.ace-solarized-dark .ace_fold {\
background-color: #268BD2;\
border-color: #93A1A1\
}\
.ace-solarized-dark .ace_entity.ace_name.ace_function,\
.ace-solarized-dark .ace_entity.ace_name.ace_tag,\
.ace-solarized-dark .ace_support.ace_function,\
.ace-solarized-dark .ace_variable,\
.ace-solarized-dark .ace_variable.ace_language {\
color: #268BD2\
}\
.ace-solarized-dark .ace_string {\
color: #2AA198\
}\
.ace-solarized-dark .ace_comment {\
font-style: italic;\
color: #657B83\
}\
.ace-solarized-dark .ace_indent-guide {\
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAEklEQVQImWNg0Db1ZVCxc/sPAAd4AlUHlLenAAAAAElFTkSuQmCC) right repeat-y\
}";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 604 */
/*!*********************************************!*\
  !*** ./node_modules/brace/theme/monokai.js ***!
  \*********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/monokai",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = true;
exports.cssClass = "ace-monokai";
exports.cssText = ".ace-monokai .ace_gutter {\
background: #2F3129;\
color: #8F908A\
}\
.ace-monokai .ace_print-margin {\
width: 1px;\
background: #555651\
}\
.ace-monokai {\
background-color: #272822;\
color: #F8F8F2\
}\
.ace-monokai .ace_cursor {\
color: #F8F8F0\
}\
.ace-monokai .ace_marker-layer .ace_selection {\
background: #49483E\
}\
.ace-monokai.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px #272822;\
}\
.ace-monokai .ace_marker-layer .ace_step {\
background: rgb(102, 82, 0)\
}\
.ace-monokai .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid #49483E\
}\
.ace-monokai .ace_marker-layer .ace_active-line {\
background: #202020\
}\
.ace-monokai .ace_gutter-active-line {\
background-color: #272727\
}\
.ace-monokai .ace_marker-layer .ace_selected-word {\
border: 1px solid #49483E\
}\
.ace-monokai .ace_invisible {\
color: #52524d\
}\
.ace-monokai .ace_entity.ace_name.ace_tag,\
.ace-monokai .ace_keyword,\
.ace-monokai .ace_meta.ace_tag,\
.ace-monokai .ace_storage {\
color: #F92672\
}\
.ace-monokai .ace_punctuation,\
.ace-monokai .ace_punctuation.ace_tag {\
color: #fff\
}\
.ace-monokai .ace_constant.ace_character,\
.ace-monokai .ace_constant.ace_language,\
.ace-monokai .ace_constant.ace_numeric,\
.ace-monokai .ace_constant.ace_other {\
color: #AE81FF\
}\
.ace-monokai .ace_invalid {\
color: #F8F8F0;\
background-color: #F92672\
}\
.ace-monokai .ace_invalid.ace_deprecated {\
color: #F8F8F0;\
background-color: #AE81FF\
}\
.ace-monokai .ace_support.ace_constant,\
.ace-monokai .ace_support.ace_function {\
color: #66D9EF\
}\
.ace-monokai .ace_fold {\
background-color: #A6E22E;\
border-color: #F8F8F2\
}\
.ace-monokai .ace_storage.ace_type,\
.ace-monokai .ace_support.ace_class,\
.ace-monokai .ace_support.ace_type {\
font-style: italic;\
color: #66D9EF\
}\
.ace-monokai .ace_entity.ace_name.ace_function,\
.ace-monokai .ace_entity.ace_other,\
.ace-monokai .ace_entity.ace_other.ace_attribute-name,\
.ace-monokai .ace_variable {\
color: #A6E22E\
}\
.ace-monokai .ace_variable.ace_parameter {\
font-style: italic;\
color: #FD971F\
}\
.ace-monokai .ace_string {\
color: #E6DB74\
}\
.ace-monokai .ace_comment {\
color: #75715E\
}\
.ace-monokai .ace_indent-guide {\
background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAEklEQVQImWPQ0FD0ZXBzd/wPAAjVAoxeSgNeAAAAAElFTkSuQmCC) right repeat-y\
}";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 605 */
/*!********************************************!*\
  !*** ./node_modules/brace/theme/chrome.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/chrome",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = false;
exports.cssClass = "ace-chrome";
exports.cssText = ".ace-chrome .ace_gutter {\
background: #ebebeb;\
color: #333;\
overflow : hidden;\
}\
.ace-chrome .ace_print-margin {\
width: 1px;\
background: #e8e8e8;\
}\
.ace-chrome {\
background-color: #FFFFFF;\
color: black;\
}\
.ace-chrome .ace_cursor {\
color: black;\
}\
.ace-chrome .ace_invisible {\
color: rgb(191, 191, 191);\
}\
.ace-chrome .ace_constant.ace_buildin {\
color: rgb(88, 72, 246);\
}\
.ace-chrome .ace_constant.ace_language {\
color: rgb(88, 92, 246);\
}\
.ace-chrome .ace_constant.ace_library {\
color: rgb(6, 150, 14);\
}\
.ace-chrome .ace_invalid {\
background-color: rgb(153, 0, 0);\
color: white;\
}\
.ace-chrome .ace_fold {\
}\
.ace-chrome .ace_support.ace_function {\
color: rgb(60, 76, 114);\
}\
.ace-chrome .ace_support.ace_constant {\
color: rgb(6, 150, 14);\
}\
.ace-chrome .ace_support.ace_type,\
.ace-chrome .ace_support.ace_class\
.ace-chrome .ace_support.ace_other {\
color: rgb(109, 121, 222);\
}\
.ace-chrome .ace_variable.ace_parameter {\
font-style:italic;\
color:#FD971F;\
}\
.ace-chrome .ace_keyword.ace_operator {\
color: rgb(104, 118, 135);\
}\
.ace-chrome .ace_comment {\
color: #236e24;\
}\
.ace-chrome .ace_comment.ace_doc {\
color: #236e24;\
}\
.ace-chrome .ace_comment.ace_doc.ace_tag {\
color: #236e24;\
}\
.ace-chrome .ace_constant.ace_numeric {\
color: rgb(0, 0, 205);\
}\
.ace-chrome .ace_variable {\
color: rgb(49, 132, 149);\
}\
.ace-chrome .ace_xml-pe {\
color: rgb(104, 104, 91);\
}\
.ace-chrome .ace_entity.ace_name.ace_function {\
color: #0000A2;\
}\
.ace-chrome .ace_heading {\
color: rgb(12, 7, 255);\
}\
.ace-chrome .ace_list {\
color:rgb(185, 6, 144);\
}\
.ace-chrome .ace_marker-layer .ace_selection {\
background: rgb(181, 213, 255);\
}\
.ace-chrome .ace_marker-layer .ace_step {\
background: rgb(252, 255, 0);\
}\
.ace-chrome .ace_marker-layer .ace_stack {\
background: rgb(164, 229, 101);\
}\
.ace-chrome .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid rgb(192, 192, 192);\
}\
.ace-chrome .ace_marker-layer .ace_active-line {\
background: rgba(0, 0, 0, 0.07);\
}\
.ace-chrome .ace_gutter-active-line {\
background-color : #dcdcdc;\
}\
.ace-chrome .ace_marker-layer .ace_selected-word {\
background: rgb(250, 250, 255);\
border: 1px solid rgb(200, 200, 250);\
}\
.ace-chrome .ace_storage,\
.ace-chrome .ace_keyword,\
.ace-chrome .ace_meta.ace_tag {\
color: rgb(147, 15, 128);\
}\
.ace-chrome .ace_string.ace_regex {\
color: rgb(255, 0, 0)\
}\
.ace-chrome .ace_string {\
color: #1A1AA6;\
}\
.ace-chrome .ace_entity.ace_other.ace_attribute-name {\
color: #994409;\
}\
.ace-chrome .ace_indent-guide {\
background: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAE0lEQVQImWP4////f4bLly//BwAmVgd1/w11/gAAAABJRU5ErkJggg==\") right repeat-y;\
}\
";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});


/***/ }),
/* 606 */
/*!*******************************************!*\
  !*** ./node_modules/brace/theme/chaos.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports) {

ace.define("ace/theme/chaos",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {

exports.isDark = true;
exports.cssClass = "ace-chaos";
exports.cssText = ".ace-chaos .ace_gutter {\
background: #141414;\
color: #595959;\
border-right: 1px solid #282828;\
}\
.ace-chaos .ace_gutter-cell.ace_warning {\
background-image: none;\
background: #FC0;\
border-left: none;\
padding-left: 0;\
color: #000;\
}\
.ace-chaos .ace_gutter-cell.ace_error {\
background-position: -6px center;\
background-image: none;\
background: #F10;\
border-left: none;\
padding-left: 0;\
color: #000;\
}\
.ace-chaos .ace_print-margin {\
border-left: 1px solid #555;\
right: 0;\
background: #1D1D1D;\
}\
.ace-chaos {\
background-color: #161616;\
color: #E6E1DC;\
}\
.ace-chaos .ace_cursor {\
border-left: 2px solid #FFFFFF;\
}\
.ace-chaos .ace_cursor.ace_overwrite {\
border-left: 0px;\
border-bottom: 1px solid #FFFFFF;\
}\
.ace-chaos .ace_marker-layer .ace_selection {\
background: #494836;\
}\
.ace-chaos .ace_marker-layer .ace_step {\
background: rgb(198, 219, 174);\
}\
.ace-chaos .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid #FCE94F;\
}\
.ace-chaos .ace_marker-layer .ace_active-line {\
background: #333;\
}\
.ace-chaos .ace_gutter-active-line {\
background-color: #222;\
}\
.ace-chaos .ace_invisible {\
color: #404040;\
}\
.ace-chaos .ace_keyword {\
color:#00698F;\
}\
.ace-chaos .ace_keyword.ace_operator {\
color:#FF308F;\
}\
.ace-chaos .ace_constant {\
color:#1EDAFB;\
}\
.ace-chaos .ace_constant.ace_language {\
color:#FDC251;\
}\
.ace-chaos .ace_constant.ace_library {\
color:#8DFF0A;\
}\
.ace-chaos .ace_constant.ace_numeric {\
color:#58C554;\
}\
.ace-chaos .ace_invalid {\
color:#FFFFFF;\
background-color:#990000;\
}\
.ace-chaos .ace_invalid.ace_deprecated {\
color:#FFFFFF;\
background-color:#990000;\
}\
.ace-chaos .ace_support {\
color: #999;\
}\
.ace-chaos .ace_support.ace_function {\
color:#00AEEF;\
}\
.ace-chaos .ace_function {\
color:#00AEEF;\
}\
.ace-chaos .ace_string {\
color:#58C554;\
}\
.ace-chaos .ace_comment {\
color:#555;\
font-style:italic;\
padding-bottom: 0px;\
}\
.ace-chaos .ace_variable {\
color:#997744;\
}\
.ace-chaos .ace_meta.ace_tag {\
color:#BE53E6;\
}\
.ace-chaos .ace_entity.ace_other.ace_attribute-name {\
color:#FFFF89;\
}\
.ace-chaos .ace_markup.ace_underline {\
text-decoration: underline;\
}\
.ace-chaos .ace_fold-widget {\
text-align: center;\
}\
.ace-chaos .ace_fold-widget:hover {\
color: #777;\
}\
.ace-chaos .ace_fold-widget.ace_start,\
.ace-chaos .ace_fold-widget.ace_end,\
.ace-chaos .ace_fold-widget.ace_closed{\
background: none;\
border: none;\
box-shadow: none;\
}\
.ace-chaos .ace_fold-widget.ace_start:after {\
content: '▾'\
}\
.ace-chaos .ace_fold-widget.ace_end:after {\
content: '▴'\
}\
.ace-chaos .ace_fold-widget.ace_closed:after {\
content: '‣'\
}\
.ace-chaos .ace_indent-guide {\
border-right:1px dotted #333;\
margin-right:-1px;\
}\
.ace-chaos .ace_fold { \
background: #222; \
border-radius: 3px; \
color: #7AF; \
border: none; \
}\
.ace-chaos .ace_fold:hover {\
background: #CCC; \
color: #000;\
}\
";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);

});


/***/ }),
/* 607 */,
/* 608 */
/*!***********************************************!*\
  !*** ./node_modules/brace/mode/javascript.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

ace.define("ace/mode/doc_comment_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/text_highlight_rules"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../lib/oop");
var TextHighlightRules = acequire("./text_highlight_rules").TextHighlightRules;

var DocCommentHighlightRules = function() {
    this.$rules = {
        "start" : [ {
            token : "comment.doc.tag",
            regex : "@[\\w\\d_]+" // TODO: fix email addresses
        }, 
        DocCommentHighlightRules.getTagRule(),
        {
            defaultToken : "comment.doc",
            caseInsensitive: true
        }]
    };
};

oop.inherits(DocCommentHighlightRules, TextHighlightRules);

DocCommentHighlightRules.getTagRule = function(start) {
    return {
        token : "comment.doc.tag.storage.type",
        regex : "\\b(?:TODO|FIXME|XXX|HACK)\\b"
    };
};

DocCommentHighlightRules.getStartRule = function(start) {
    return {
        token : "comment.doc", // doc comment
        regex : "\\/\\*(?=\\*)",
        next  : start
    };
};

DocCommentHighlightRules.getEndRule = function (start) {
    return {
        token : "comment.doc", // closing comment
        regex : "\\*\\/",
        next  : start
    };
};


exports.DocCommentHighlightRules = DocCommentHighlightRules;

});

ace.define("ace/mode/javascript_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/doc_comment_highlight_rules","ace/mode/text_highlight_rules"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../lib/oop");
var DocCommentHighlightRules = acequire("./doc_comment_highlight_rules").DocCommentHighlightRules;
var TextHighlightRules = acequire("./text_highlight_rules").TextHighlightRules;
var identifierRe = "[a-zA-Z\\$_\u00a1-\uffff][a-zA-Z\\d\\$_\u00a1-\uffff]*";

var JavaScriptHighlightRules = function(options) {
    var keywordMapper = this.createKeywordMapper({
        "variable.language":
            "Array|Boolean|Date|Function|Iterator|Number|Object|RegExp|String|Proxy|"  + // Constructors
            "Namespace|QName|XML|XMLList|"                                             + // E4X
            "ArrayBuffer|Float32Array|Float64Array|Int16Array|Int32Array|Int8Array|"   +
            "Uint16Array|Uint32Array|Uint8Array|Uint8ClampedArray|"                    +
            "Error|EvalError|InternalError|RangeError|ReferenceError|StopIteration|"   + // Errors
            "SyntaxError|TypeError|URIError|"                                          +
            "decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|eval|isFinite|" + // Non-constructor functions
            "isNaN|parseFloat|parseInt|"                                               +
            "JSON|Math|"                                                               + // Other
            "this|arguments|prototype|window|document"                                 , // Pseudo
        "keyword":
            "const|yield|import|get|set|async|await|" +
            "break|case|catch|continue|default|delete|do|else|finally|for|function|" +
            "if|in|of|instanceof|new|return|switch|throw|try|typeof|let|var|while|with|debugger|" +
            "__parent__|__count__|escape|unescape|with|__proto__|" +
            "class|enum|extends|super|export|implements|private|public|interface|package|protected|static",
        "storage.type":
            "const|let|var|function",
        "constant.language":
            "null|Infinity|NaN|undefined",
        "support.function":
            "alert",
        "constant.language.boolean": "true|false"
    }, "identifier");
    var kwBeforeRe = "case|do|else|finally|in|instanceof|return|throw|try|typeof|yield|void";

    var escapedRe = "\\\\(?:x[0-9a-fA-F]{2}|" + // hex
        "u[0-9a-fA-F]{4}|" + // unicode
        "u{[0-9a-fA-F]{1,6}}|" + // es6 unicode
        "[0-2][0-7]{0,2}|" + // oct
        "3[0-7][0-7]?|" + // oct
        "[4-7][0-7]?|" + //oct
        ".)";

    this.$rules = {
        "no_regex" : [
            DocCommentHighlightRules.getStartRule("doc-start"),
            comments("no_regex"),
            {
                token : "string",
                regex : "'(?=.)",
                next  : "qstring"
            }, {
                token : "string",
                regex : '"(?=.)',
                next  : "qqstring"
            }, {
                token : "constant.numeric", // hexadecimal, octal and binary
                regex : /0(?:[xX][0-9a-fA-F]+|[oO][0-7]+|[bB][01]+)\b/
            }, {
                token : "constant.numeric", // decimal integers and floats
                regex : /(?:\d\d*(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+\b)?/
            }, {
                token : [
                    "storage.type", "punctuation.operator", "support.function",
                    "punctuation.operator", "entity.name.function", "text","keyword.operator"
                ],
                regex : "(" + identifierRe + ")(\\.)(prototype)(\\.)(" + identifierRe +")(\\s*)(=)",
                next: "function_arguments"
            }, {
                token : [
                    "storage.type", "punctuation.operator", "entity.name.function", "text",
                    "keyword.operator", "text", "storage.type", "text", "paren.lparen"
                ],
                regex : "(" + identifierRe + ")(\\.)(" + identifierRe +")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : [
                    "entity.name.function", "text", "keyword.operator", "text", "storage.type",
                    "text", "paren.lparen"
                ],
                regex : "(" + identifierRe +")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : [
                    "storage.type", "punctuation.operator", "entity.name.function", "text",
                    "keyword.operator", "text",
                    "storage.type", "text", "entity.name.function", "text", "paren.lparen"
                ],
                regex : "(" + identifierRe + ")(\\.)(" + identifierRe +")(\\s*)(=)(\\s*)(function)(\\s+)(\\w+)(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : [
                    "storage.type", "text", "entity.name.function", "text", "paren.lparen"
                ],
                regex : "(function)(\\s+)(" + identifierRe + ")(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : [
                    "entity.name.function", "text", "punctuation.operator",
                    "text", "storage.type", "text", "paren.lparen"
                ],
                regex : "(" + identifierRe + ")(\\s*)(:)(\\s*)(function)(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : [
                    "text", "text", "storage.type", "text", "paren.lparen"
                ],
                regex : "(:)(\\s*)(function)(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : "keyword",
                regex : "from(?=\\s*('|\"))"
            }, {
                token : "keyword",
                regex : "(?:" + kwBeforeRe + ")\\b",
                next : "start"
            }, {
                token : ["support.constant"],
                regex : /that\b/
            }, {
                token : ["storage.type", "punctuation.operator", "support.function.firebug"],
                regex : /(console)(\.)(warn|info|log|error|time|trace|timeEnd|assert)\b/
            }, {
                token : keywordMapper,
                regex : identifierRe
            }, {
                token : "punctuation.operator",
                regex : /[.](?![.])/,
                next  : "property"
            }, {
                token : "storage.type",
                regex : /=>/
            }, {
                token : "keyword.operator",
                regex : /--|\+\+|\.{3}|===|==|=|!=|!==|<+=?|>+=?|!|&&|\|\||\?:|[!$%&*+\-~\/^]=?/,
                next  : "start"
            }, {
                token : "punctuation.operator",
                regex : /[?:,;.]/,
                next  : "start"
            }, {
                token : "paren.lparen",
                regex : /[\[({]/,
                next  : "start"
            }, {
                token : "paren.rparen",
                regex : /[\])}]/
            }, {
                token: "comment",
                regex: /^#!.*$/
            }
        ],
        property: [{
                token : "text",
                regex : "\\s+"
            }, {
                token : [
                    "storage.type", "punctuation.operator", "entity.name.function", "text",
                    "keyword.operator", "text",
                    "storage.type", "text", "entity.name.function", "text", "paren.lparen"
                ],
                regex : "(" + identifierRe + ")(\\.)(" + identifierRe +")(\\s*)(=)(\\s*)(function)(?:(\\s+)(\\w+))?(\\s*)(\\()",
                next: "function_arguments"
            }, {
                token : "punctuation.operator",
                regex : /[.](?![.])/
            }, {
                token : "support.function",
                regex : /(s(?:h(?:ift|ow(?:Mod(?:elessDialog|alDialog)|Help))|croll(?:X|By(?:Pages|Lines)?|Y|To)?|t(?:op|rike)|i(?:n|zeToContent|debar|gnText)|ort|u(?:p|b(?:str(?:ing)?)?)|pli(?:ce|t)|e(?:nd|t(?:Re(?:sizable|questHeader)|M(?:i(?:nutes|lliseconds)|onth)|Seconds|Ho(?:tKeys|urs)|Year|Cursor|Time(?:out)?|Interval|ZOptions|Date|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Date|FullYear)|FullYear|Active)|arch)|qrt|lice|avePreferences|mall)|h(?:ome|andleEvent)|navigate|c(?:har(?:CodeAt|At)|o(?:s|n(?:cat|textual|firm)|mpile)|eil|lear(?:Timeout|Interval)?|a(?:ptureEvents|ll)|reate(?:StyleSheet|Popup|EventObject))|t(?:o(?:GMTString|S(?:tring|ource)|U(?:TCString|pperCase)|Lo(?:caleString|werCase))|est|a(?:n|int(?:Enabled)?))|i(?:s(?:NaN|Finite)|ndexOf|talics)|d(?:isableExternalCapture|ump|etachEvent)|u(?:n(?:shift|taint|escape|watch)|pdateCommands)|j(?:oin|avaEnabled)|p(?:o(?:p|w)|ush|lugins.refresh|a(?:ddings|rse(?:Int|Float)?)|r(?:int|ompt|eference))|e(?:scape|nableExternalCapture|val|lementFromPoint|x(?:p|ec(?:Script|Command)?))|valueOf|UTC|queryCommand(?:State|Indeterm|Enabled|Value)|f(?:i(?:nd|le(?:ModifiedDate|Size|CreatedDate|UpdatedDate)|xed)|o(?:nt(?:size|color)|rward)|loor|romCharCode)|watch|l(?:ink|o(?:ad|g)|astIndexOf)|a(?:sin|nchor|cos|t(?:tachEvent|ob|an(?:2)?)|pply|lert|b(?:s|ort))|r(?:ou(?:nd|teEvents)|e(?:size(?:By|To)|calc|turnValue|place|verse|l(?:oad|ease(?:Capture|Events)))|andom)|g(?:o|et(?:ResponseHeader|M(?:i(?:nutes|lliseconds)|onth)|Se(?:conds|lection)|Hours|Year|Time(?:zoneOffset)?|Da(?:y|te)|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Da(?:y|te)|FullYear)|FullYear|A(?:ttention|llResponseHeaders)))|m(?:in|ove(?:B(?:y|elow)|To(?:Absolute)?|Above)|ergeAttributes|a(?:tch|rgins|x))|b(?:toa|ig|o(?:ld|rderWidths)|link|ack))\b(?=\()/
            }, {
                token : "support.function.dom",
                regex : /(s(?:ub(?:stringData|mit)|plitText|e(?:t(?:NamedItem|Attribute(?:Node)?)|lect))|has(?:ChildNodes|Feature)|namedItem|c(?:l(?:ick|o(?:se|neNode))|reate(?:C(?:omment|DATASection|aption)|T(?:Head|extNode|Foot)|DocumentFragment|ProcessingInstruction|E(?:ntityReference|lement)|Attribute))|tabIndex|i(?:nsert(?:Row|Before|Cell|Data)|tem)|open|delete(?:Row|C(?:ell|aption)|T(?:Head|Foot)|Data)|focus|write(?:ln)?|a(?:dd|ppend(?:Child|Data))|re(?:set|place(?:Child|Data)|move(?:NamedItem|Child|Attribute(?:Node)?)?)|get(?:NamedItem|Element(?:sBy(?:Name|TagName|ClassName)|ById)|Attribute(?:Node)?)|blur)\b(?=\()/
            }, {
                token :  "support.constant",
                regex : /(s(?:ystemLanguage|cr(?:ipts|ollbars|een(?:X|Y|Top|Left))|t(?:yle(?:Sheets)?|atus(?:Text|bar)?)|ibling(?:Below|Above)|ource|uffixes|e(?:curity(?:Policy)?|l(?:ection|f)))|h(?:istory|ost(?:name)?|as(?:h|Focus))|y|X(?:MLDocument|SLDocument)|n(?:ext|ame(?:space(?:s|URI)|Prop))|M(?:IN_VALUE|AX_VALUE)|c(?:haracterSet|o(?:n(?:structor|trollers)|okieEnabled|lorDepth|mp(?:onents|lete))|urrent|puClass|l(?:i(?:p(?:boardData)?|entInformation)|osed|asses)|alle(?:e|r)|rypto)|t(?:o(?:olbar|p)|ext(?:Transform|Indent|Decoration|Align)|ags)|SQRT(?:1_2|2)|i(?:n(?:ner(?:Height|Width)|put)|ds|gnoreCase)|zIndex|o(?:scpu|n(?:readystatechange|Line)|uter(?:Height|Width)|p(?:sProfile|ener)|ffscreenBuffering)|NEGATIVE_INFINITY|d(?:i(?:splay|alog(?:Height|Top|Width|Left|Arguments)|rectories)|e(?:scription|fault(?:Status|Ch(?:ecked|arset)|View)))|u(?:ser(?:Profile|Language|Agent)|n(?:iqueID|defined)|pdateInterval)|_content|p(?:ixelDepth|ort|ersonalbar|kcs11|l(?:ugins|atform)|a(?:thname|dding(?:Right|Bottom|Top|Left)|rent(?:Window|Layer)?|ge(?:X(?:Offset)?|Y(?:Offset)?))|r(?:o(?:to(?:col|type)|duct(?:Sub)?|mpter)|e(?:vious|fix)))|e(?:n(?:coding|abledPlugin)|x(?:ternal|pando)|mbeds)|v(?:isibility|endor(?:Sub)?|Linkcolor)|URLUnencoded|P(?:I|OSITIVE_INFINITY)|f(?:ilename|o(?:nt(?:Size|Family|Weight)|rmName)|rame(?:s|Element)|gColor)|E|whiteSpace|l(?:i(?:stStyleType|n(?:eHeight|kColor))|o(?:ca(?:tion(?:bar)?|lName)|wsrc)|e(?:ngth|ft(?:Context)?)|a(?:st(?:M(?:odified|atch)|Index|Paren)|yer(?:s|X)|nguage))|a(?:pp(?:MinorVersion|Name|Co(?:deName|re)|Version)|vail(?:Height|Top|Width|Left)|ll|r(?:ity|guments)|Linkcolor|bove)|r(?:ight(?:Context)?|e(?:sponse(?:XML|Text)|adyState))|global|x|m(?:imeTypes|ultiline|enubar|argin(?:Right|Bottom|Top|Left))|L(?:N(?:10|2)|OG(?:10E|2E))|b(?:o(?:ttom|rder(?:Width|RightWidth|BottomWidth|Style|Color|TopWidth|LeftWidth))|ufferDepth|elow|ackground(?:Color|Image)))\b/
            }, {
                token : "identifier",
                regex : identifierRe
            }, {
                regex: "",
                token: "empty",
                next: "no_regex"
            }
        ],
        "start": [
            DocCommentHighlightRules.getStartRule("doc-start"),
            comments("start"),
            {
                token: "string.regexp",
                regex: "\\/",
                next: "regex"
            }, {
                token : "text",
                regex : "\\s+|^$",
                next : "start"
            }, {
                token: "empty",
                regex: "",
                next: "no_regex"
            }
        ],
        "regex": [
            {
                token: "regexp.keyword.operator",
                regex: "\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"
            }, {
                token: "string.regexp",
                regex: "/[sxngimy]*",
                next: "no_regex"
            }, {
                token : "invalid",
                regex: /\{\d+\b,?\d*\}[+*]|[+*$^?][+*]|[$^][?]|\?{3,}/
            }, {
                token : "constant.language.escape",
                regex: /\(\?[:=!]|\)|\{\d+\b,?\d*\}|[+*]\?|[()$^+*?.]/
            }, {
                token : "constant.language.delimiter",
                regex: /\|/
            }, {
                token: "constant.language.escape",
                regex: /\[\^?/,
                next: "regex_character_class"
            }, {
                token: "empty",
                regex: "$",
                next: "no_regex"
            }, {
                defaultToken: "string.regexp"
            }
        ],
        "regex_character_class": [
            {
                token: "regexp.charclass.keyword.operator",
                regex: "\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"
            }, {
                token: "constant.language.escape",
                regex: "]",
                next: "regex"
            }, {
                token: "constant.language.escape",
                regex: "-"
            }, {
                token: "empty",
                regex: "$",
                next: "no_regex"
            }, {
                defaultToken: "string.regexp.charachterclass"
            }
        ],
        "function_arguments": [
            {
                token: "variable.parameter",
                regex: identifierRe
            }, {
                token: "punctuation.operator",
                regex: "[, ]+"
            }, {
                token: "punctuation.operator",
                regex: "$"
            }, {
                token: "empty",
                regex: "",
                next: "no_regex"
            }
        ],
        "qqstring" : [
            {
                token : "constant.language.escape",
                regex : escapedRe
            }, {
                token : "string",
                regex : "\\\\$",
                consumeLineEnd  : true
            }, {
                token : "string",
                regex : '"|$',
                next  : "no_regex"
            }, {
                defaultToken: "string"
            }
        ],
        "qstring" : [
            {
                token : "constant.language.escape",
                regex : escapedRe
            }, {
                token : "string",
                regex : "\\\\$",
                consumeLineEnd  : true
            }, {
                token : "string",
                regex : "'|$",
                next  : "no_regex"
            }, {
                defaultToken: "string"
            }
        ]
    };


    if (!options || !options.noES6) {
        this.$rules.no_regex.unshift({
            regex: "[{}]", onMatch: function(val, state, stack) {
                this.next = val == "{" ? this.nextState : "";
                if (val == "{" && stack.length) {
                    stack.unshift("start", state);
                }
                else if (val == "}" && stack.length) {
                    stack.shift();
                    this.next = stack.shift();
                    if (this.next.indexOf("string") != -1 || this.next.indexOf("jsx") != -1)
                        return "paren.quasi.end";
                }
                return val == "{" ? "paren.lparen" : "paren.rparen";
            },
            nextState: "start"
        }, {
            token : "string.quasi.start",
            regex : /`/,
            push  : [{
                token : "constant.language.escape",
                regex : escapedRe
            }, {
                token : "paren.quasi.start",
                regex : /\${/,
                push  : "start"
            }, {
                token : "string.quasi.end",
                regex : /`/,
                next  : "pop"
            }, {
                defaultToken: "string.quasi"
            }]
        });

        if (!options || options.jsx != false)
            JSX.call(this);
    }

    this.embedRules(DocCommentHighlightRules, "doc-",
        [ DocCommentHighlightRules.getEndRule("no_regex") ]);

    this.normalizeRules();
};

oop.inherits(JavaScriptHighlightRules, TextHighlightRules);

function JSX() {
    var tagRegex = identifierRe.replace("\\d", "\\d\\-");
    var jsxTag = {
        onMatch : function(val, state, stack) {
            var offset = val.charAt(1) == "/" ? 2 : 1;
            if (offset == 1) {
                if (state != this.nextState)
                    stack.unshift(this.next, this.nextState, 0);
                else
                    stack.unshift(this.next);
                stack[2]++;
            } else if (offset == 2) {
                if (state == this.nextState) {
                    stack[1]--;
                    if (!stack[1] || stack[1] < 0) {
                        stack.shift();
                        stack.shift();
                    }
                }
            }
            return [{
                type: "meta.tag.punctuation." + (offset == 1 ? "" : "end-") + "tag-open.xml",
                value: val.slice(0, offset)
            }, {
                type: "meta.tag.tag-name.xml",
                value: val.substr(offset)
            }];
        },
        regex : "</?" + tagRegex + "",
        next: "jsxAttributes",
        nextState: "jsx"
    };
    this.$rules.start.unshift(jsxTag);
    var jsxJsRule = {
        regex: "{",
        token: "paren.quasi.start",
        push: "start"
    };
    this.$rules.jsx = [
        jsxJsRule,
        jsxTag,
        {include : "reference"},
        {defaultToken: "string"}
    ];
    this.$rules.jsxAttributes = [{
        token : "meta.tag.punctuation.tag-close.xml",
        regex : "/?>",
        onMatch : function(value, currentState, stack) {
            if (currentState == stack[0])
                stack.shift();
            if (value.length == 2) {
                if (stack[0] == this.nextState)
                    stack[1]--;
                if (!stack[1] || stack[1] < 0) {
                    stack.splice(0, 2);
                }
            }
            this.next = stack[0] || "start";
            return [{type: this.token, value: value}];
        },
        nextState: "jsx"
    },
    jsxJsRule,
    comments("jsxAttributes"),
    {
        token : "entity.other.attribute-name.xml",
        regex : tagRegex
    }, {
        token : "keyword.operator.attribute-equals.xml",
        regex : "="
    }, {
        token : "text.tag-whitespace.xml",
        regex : "\\s+"
    }, {
        token : "string.attribute-value.xml",
        regex : "'",
        stateName : "jsx_attr_q",
        push : [
            {token : "string.attribute-value.xml", regex: "'", next: "pop"},
            {include : "reference"},
            {defaultToken : "string.attribute-value.xml"}
        ]
    }, {
        token : "string.attribute-value.xml",
        regex : '"',
        stateName : "jsx_attr_qq",
        push : [
            {token : "string.attribute-value.xml", regex: '"', next: "pop"},
            {include : "reference"},
            {defaultToken : "string.attribute-value.xml"}
        ]
    },
    jsxTag
    ];
    this.$rules.reference = [{
        token : "constant.language.escape.reference.xml",
        regex : "(?:&#[0-9]+;)|(?:&#x[0-9a-fA-F]+;)|(?:&[a-zA-Z0-9_:\\.-]+;)"
    }];
}

function comments(next) {
    return [
        {
            token : "comment", // multi line comment
            regex : /\/\*/,
            next: [
                DocCommentHighlightRules.getTagRule(),
                {token : "comment", regex : "\\*\\/", next : next || "pop"},
                {defaultToken : "comment", caseInsensitive: true}
            ]
        }, {
            token : "comment",
            regex : "\\/\\/",
            next: [
                DocCommentHighlightRules.getTagRule(),
                {token : "comment", regex : "$|^", next : next || "pop"},
                {defaultToken : "comment", caseInsensitive: true}
            ]
        }
    ];
}
exports.JavaScriptHighlightRules = JavaScriptHighlightRules;
});

ace.define("ace/mode/matching_brace_outdent",["require","exports","module","ace/range"], function(acequire, exports, module) {
"use strict";

var Range = acequire("../range").Range;

var MatchingBraceOutdent = function() {};

(function() {

    this.checkOutdent = function(line, input) {
        if (! /^\s+$/.test(line))
            return false;

        return /^\s*\}/.test(input);
    };

    this.autoOutdent = function(doc, row) {
        var line = doc.getLine(row);
        var match = line.match(/^(\s*\})/);

        if (!match) return 0;

        var column = match[1].length;
        var openBracePos = doc.findMatchingBracket({row: row, column: column});

        if (!openBracePos || openBracePos.row == row) return 0;

        var indent = this.$getIndent(doc.getLine(openBracePos.row));
        doc.replace(new Range(row, 0, row, column-1), indent);
    };

    this.$getIndent = function(line) {
        return line.match(/^\s*/)[0];
    };

}).call(MatchingBraceOutdent.prototype);

exports.MatchingBraceOutdent = MatchingBraceOutdent;
});

ace.define("ace/mode/folding/cstyle",["require","exports","module","ace/lib/oop","ace/range","ace/mode/folding/fold_mode"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../../lib/oop");
var Range = acequire("../../range").Range;
var BaseFoldMode = acequire("./fold_mode").FoldMode;

var FoldMode = exports.FoldMode = function(commentRegex) {
    if (commentRegex) {
        this.foldingStartMarker = new RegExp(
            this.foldingStartMarker.source.replace(/\|[^|]*?$/, "|" + commentRegex.start)
        );
        this.foldingStopMarker = new RegExp(
            this.foldingStopMarker.source.replace(/\|[^|]*?$/, "|" + commentRegex.end)
        );
    }
};
oop.inherits(FoldMode, BaseFoldMode);

(function() {
    
    this.foldingStartMarker = /([\{\[\(])[^\}\]\)]*$|^\s*(\/\*)/;
    this.foldingStopMarker = /^[^\[\{\(]*([\}\]\)])|^[\s\*]*(\*\/)/;
    this.singleLineBlockCommentRe= /^\s*(\/\*).*\*\/\s*$/;
    this.tripleStarBlockCommentRe = /^\s*(\/\*\*\*).*\*\/\s*$/;
    this.startRegionRe = /^\s*(\/\*|\/\/)#?region\b/;
    this._getFoldWidgetBase = this.getFoldWidget;
    this.getFoldWidget = function(session, foldStyle, row) {
        var line = session.getLine(row);
    
        if (this.singleLineBlockCommentRe.test(line)) {
            if (!this.startRegionRe.test(line) && !this.tripleStarBlockCommentRe.test(line))
                return "";
        }
    
        var fw = this._getFoldWidgetBase(session, foldStyle, row);
    
        if (!fw && this.startRegionRe.test(line))
            return "start"; // lineCommentRegionStart
    
        return fw;
    };

    this.getFoldWidgetRange = function(session, foldStyle, row, forceMultiline) {
        var line = session.getLine(row);
        
        if (this.startRegionRe.test(line))
            return this.getCommentRegionBlock(session, line, row);
        
        var match = line.match(this.foldingStartMarker);
        if (match) {
            var i = match.index;

            if (match[1])
                return this.openingBracketBlock(session, match[1], row, i);
                
            var range = session.getCommentFoldRange(row, i + match[0].length, 1);
            
            if (range && !range.isMultiLine()) {
                if (forceMultiline) {
                    range = this.getSectionRange(session, row);
                } else if (foldStyle != "all")
                    range = null;
            }
            
            return range;
        }

        if (foldStyle === "markbegin")
            return;

        var match = line.match(this.foldingStopMarker);
        if (match) {
            var i = match.index + match[0].length;

            if (match[1])
                return this.closingBracketBlock(session, match[1], row, i);

            return session.getCommentFoldRange(row, i, -1);
        }
    };
    
    this.getSectionRange = function(session, row) {
        var line = session.getLine(row);
        var startIndent = line.search(/\S/);
        var startRow = row;
        var startColumn = line.length;
        row = row + 1;
        var endRow = row;
        var maxRow = session.getLength();
        while (++row < maxRow) {
            line = session.getLine(row);
            var indent = line.search(/\S/);
            if (indent === -1)
                continue;
            if  (startIndent > indent)
                break;
            var subRange = this.getFoldWidgetRange(session, "all", row);
            
            if (subRange) {
                if (subRange.start.row <= startRow) {
                    break;
                } else if (subRange.isMultiLine()) {
                    row = subRange.end.row;
                } else if (startIndent == indent) {
                    break;
                }
            }
            endRow = row;
        }
        
        return new Range(startRow, startColumn, endRow, session.getLine(endRow).length);
    };
    this.getCommentRegionBlock = function(session, line, row) {
        var startColumn = line.search(/\s*$/);
        var maxRow = session.getLength();
        var startRow = row;
        
        var re = /^\s*(?:\/\*|\/\/|--)#?(end)?region\b/;
        var depth = 1;
        while (++row < maxRow) {
            line = session.getLine(row);
            var m = re.exec(line);
            if (!m) continue;
            if (m[1]) depth--;
            else depth++;

            if (!depth) break;
        }

        var endRow = row;
        if (endRow > startRow) {
            return new Range(startRow, startColumn, endRow, line.length);
        }
    };

}).call(FoldMode.prototype);

});

ace.define("ace/mode/javascript",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/javascript_highlight_rules","ace/mode/matching_brace_outdent","ace/worker/worker_client","ace/mode/behaviour/cstyle","ace/mode/folding/cstyle"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../lib/oop");
var TextMode = acequire("./text").Mode;
var JavaScriptHighlightRules = acequire("./javascript_highlight_rules").JavaScriptHighlightRules;
var MatchingBraceOutdent = acequire("./matching_brace_outdent").MatchingBraceOutdent;
var WorkerClient = acequire("../worker/worker_client").WorkerClient;
var CstyleBehaviour = acequire("./behaviour/cstyle").CstyleBehaviour;
var CStyleFoldMode = acequire("./folding/cstyle").FoldMode;

var Mode = function() {
    this.HighlightRules = JavaScriptHighlightRules;
    
    this.$outdent = new MatchingBraceOutdent();
    this.$behaviour = new CstyleBehaviour();
    this.foldingRules = new CStyleFoldMode();
};
oop.inherits(Mode, TextMode);

(function() {

    this.lineCommentStart = "//";
    this.blockComment = {start: "/*", end: "*/"};
    this.$quotes = {'"': '"', "'": "'", "`": "`"};

    this.getNextLineIndent = function(state, line, tab) {
        var indent = this.$getIndent(line);

        var tokenizedLine = this.getTokenizer().getLineTokens(line, state);
        var tokens = tokenizedLine.tokens;
        var endState = tokenizedLine.state;

        if (tokens.length && tokens[tokens.length-1].type == "comment") {
            return indent;
        }

        if (state == "start" || state == "no_regex") {
            var match = line.match(/^.*(?:\bcase\b.*:|[\{\(\[])\s*$/);
            if (match) {
                indent += tab;
            }
        } else if (state == "doc-start") {
            if (endState == "start" || endState == "no_regex") {
                return "";
            }
            var match = line.match(/^\s*(\/?)\*/);
            if (match) {
                if (match[1]) {
                    indent += " ";
                }
                indent += "* ";
            }
        }

        return indent;
    };

    this.checkOutdent = function(state, line, input) {
        return this.$outdent.checkOutdent(line, input);
    };

    this.autoOutdent = function(state, doc, row) {
        this.$outdent.autoOutdent(doc, row);
    };

    this.createWorker = function(session) {
        var worker = new WorkerClient(["ace"], __webpack_require__(/*! ../worker/javascript */ 244), "JavaScriptWorker");
        worker.attachToDocument(session.getDocument());

        worker.on("annotate", function(results) {
            session.setAnnotations(results.data);
        });

        worker.on("terminate", function() {
            session.clearAnnotations();
        });

        return worker;
    };

    this.$id = "ace/mode/javascript";
}).call(Mode.prototype);

exports.Mode = Mode;
});


/***/ }),
/* 609 */
/*!*************************************!*\
  !*** ./node_modules/brace/index.js ***!
  \*************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Ajax.org B.V. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ***** END LICENSE BLOCK ***** */

/**
 * Define a module along with a payload
 * @param module a name for the payload
 * @param payload a function to call with (acequire, exports, module) params
 */

(function() {

var ACE_NAMESPACE = "ace";

var global = (function() { return this; })();
if (!global && typeof window != "undefined") global = window; // strict mode


if (!ACE_NAMESPACE && typeof acequirejs !== "undefined")
    return;


var define = function(module, deps, payload) {
    if (typeof module !== "string") {
        if (define.original)
            define.original.apply(this, arguments);
        else {
            console.error("dropping module because define wasn\'t a string.");
            console.trace();
        }
        return;
    }
    if (arguments.length == 2)
        payload = deps;
    if (!define.modules[module]) {
        define.payloads[module] = payload;
        define.modules[module] = null;
    }
};

define.modules = {};
define.payloads = {};

/**
 * Get at functionality define()ed using the function above
 */
var _acequire = function(parentId, module, callback) {
    if (typeof module === "string") {
        var payload = lookup(parentId, module);
        if (payload != undefined) {
            callback && callback();
            return payload;
        }
    } else if (Object.prototype.toString.call(module) === "[object Array]") {
        var params = [];
        for (var i = 0, l = module.length; i < l; ++i) {
            var dep = lookup(parentId, module[i]);
            if (dep == undefined && acequire.original)
                return;
            params.push(dep);
        }
        return callback && callback.apply(null, params) || true;
    }
};

var acequire = function(module, callback) {
    var packagedModule = _acequire("", module, callback);
    if (packagedModule == undefined && acequire.original)
        return acequire.original.apply(this, arguments);
    return packagedModule;
};

var normalizeModule = function(parentId, moduleName) {
    // normalize plugin acequires
    if (moduleName.indexOf("!") !== -1) {
        var chunks = moduleName.split("!");
        return normalizeModule(parentId, chunks[0]) + "!" + normalizeModule(parentId, chunks[1]);
    }
    // normalize relative acequires
    if (moduleName.charAt(0) == ".") {
        var base = parentId.split("/").slice(0, -1).join("/");
        moduleName = base + "/" + moduleName;

        while(moduleName.indexOf(".") !== -1 && previous != moduleName) {
            var previous = moduleName;
            moduleName = moduleName.replace(/\/\.\//, "/").replace(/[^\/]+\/\.\.\//, "");
        }
    }
    return moduleName;
};

/**
 * Internal function to lookup moduleNames and resolve them by calling the
 * definition function if needed.
 */
var lookup = function(parentId, moduleName) {
    moduleName = normalizeModule(parentId, moduleName);

    var module = define.modules[moduleName];
    if (!module) {
        module = define.payloads[moduleName];
        if (typeof module === 'function') {
            var exports = {};
            var mod = {
                id: moduleName,
                uri: '',
                exports: exports,
                packaged: true
            };

            var req = function(module, callback) {
                return _acequire(moduleName, module, callback);
            };

            var returnValue = module(req, exports, mod);
            exports = returnValue || mod.exports;
            define.modules[moduleName] = exports;
            delete define.payloads[moduleName];
        }
        module = define.modules[moduleName] = exports || module;
    }
    return module;
};

function exportAce(ns) {
    var root = global;
    if (ns) {
        if (!global[ns])
            global[ns] = {};
        root = global[ns];
    }

    if (!root.define || !root.define.packaged) {
        define.original = root.define;
        root.define = define;
        root.define.packaged = true;
    }

    if (!root.acequire || !root.acequire.packaged) {
        acequire.original = root.acequire;
        root.acequire = acequire;
        root.acequire.packaged = true;
    }
}

exportAce(ACE_NAMESPACE);

})();

ace.define("ace/lib/regexp",["require","exports","module"], function(acequire, exports, module) {
"use strict";

    var real = {
            exec: RegExp.prototype.exec,
            test: RegExp.prototype.test,
            match: String.prototype.match,
            replace: String.prototype.replace,
            split: String.prototype.split
        },
        compliantExecNpcg = real.exec.call(/()??/, "")[1] === undefined, // check `exec` handling of nonparticipating capturing groups
        compliantLastIndexIncrement = function () {
            var x = /^/g;
            real.test.call(x, "");
            return !x.lastIndex;
        }();

    if (compliantLastIndexIncrement && compliantExecNpcg)
        return;
    RegExp.prototype.exec = function (str) {
        var match = real.exec.apply(this, arguments),
            name, r2;
        if ( typeof(str) == 'string' && match) {
            if (!compliantExecNpcg && match.length > 1 && indexOf(match, "") > -1) {
                r2 = RegExp(this.source, real.replace.call(getNativeFlags(this), "g", ""));
                real.replace.call(str.slice(match.index), r2, function () {
                    for (var i = 1; i < arguments.length - 2; i++) {
                        if (arguments[i] === undefined)
                            match[i] = undefined;
                    }
                });
            }
            if (this._xregexp && this._xregexp.captureNames) {
                for (var i = 1; i < match.length; i++) {
                    name = this._xregexp.captureNames[i - 1];
                    if (name)
                       match[name] = match[i];
                }
            }
            if (!compliantLastIndexIncrement && this.global && !match[0].length && (this.lastIndex > match.index))
                this.lastIndex--;
        }
        return match;
    };
    if (!compliantLastIndexIncrement) {
        RegExp.prototype.test = function (str) {
            var match = real.exec.call(this, str);
            if (match && this.global && !match[0].length && (this.lastIndex > match.index))
                this.lastIndex--;
            return !!match;
        };
    }

    function getNativeFlags (regex) {
        return (regex.global     ? "g" : "") +
               (regex.ignoreCase ? "i" : "") +
               (regex.multiline  ? "m" : "") +
               (regex.extended   ? "x" : "") + // Proposed for ES4; included in AS3
               (regex.sticky     ? "y" : "");
    }

    function indexOf (array, item, from) {
        if (Array.prototype.indexOf) // Use the native array method if available
            return array.indexOf(item, from);
        for (var i = from || 0; i < array.length; i++) {
            if (array[i] === item)
                return i;
        }
        return -1;
    }

});

ace.define("ace/lib/es5-shim",["require","exports","module"], function(acequire, exports, module) {

function Empty() {}

if (!Function.prototype.bind) {
    Function.prototype.bind = function bind(that) { // .length is 1
        var target = this;
        if (typeof target != "function") {
            throw new TypeError("Function.prototype.bind called on incompatible " + target);
        }
        var args = slice.call(arguments, 1); // for normal call
        var bound = function () {

            if (this instanceof bound) {

                var result = target.apply(
                    this,
                    args.concat(slice.call(arguments))
                );
                if (Object(result) === result) {
                    return result;
                }
                return this;

            } else {
                return target.apply(
                    that,
                    args.concat(slice.call(arguments))
                );

            }

        };
        if(target.prototype) {
            Empty.prototype = target.prototype;
            bound.prototype = new Empty();
            Empty.prototype = null;
        }
        return bound;
    };
}
var call = Function.prototype.call;
var prototypeOfArray = Array.prototype;
var prototypeOfObject = Object.prototype;
var slice = prototypeOfArray.slice;
var _toString = call.bind(prototypeOfObject.toString);
var owns = call.bind(prototypeOfObject.hasOwnProperty);
var defineGetter;
var defineSetter;
var lookupGetter;
var lookupSetter;
var supportsAccessors;
if ((supportsAccessors = owns(prototypeOfObject, "__defineGetter__"))) {
    defineGetter = call.bind(prototypeOfObject.__defineGetter__);
    defineSetter = call.bind(prototypeOfObject.__defineSetter__);
    lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
    lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
}
if ([1,2].splice(0).length != 2) {
    if(function() { // test IE < 9 to splice bug - see issue #138
        function makeArray(l) {
            var a = new Array(l+2);
            a[0] = a[1] = 0;
            return a;
        }
        var array = [], lengthBefore;
        
        array.splice.apply(array, makeArray(20));
        array.splice.apply(array, makeArray(26));

        lengthBefore = array.length; //46
        array.splice(5, 0, "XXX"); // add one element

        lengthBefore + 1 == array.length

        if (lengthBefore + 1 == array.length) {
            return true;// has right splice implementation without bugs
        }
    }()) {//IE 6/7
        var array_splice = Array.prototype.splice;
        Array.prototype.splice = function(start, deleteCount) {
            if (!arguments.length) {
                return [];
            } else {
                return array_splice.apply(this, [
                    start === void 0 ? 0 : start,
                    deleteCount === void 0 ? (this.length - start) : deleteCount
                ].concat(slice.call(arguments, 2)))
            }
        };
    } else {//IE8
        Array.prototype.splice = function(pos, removeCount){
            var length = this.length;
            if (pos > 0) {
                if (pos > length)
                    pos = length;
            } else if (pos == void 0) {
                pos = 0;
            } else if (pos < 0) {
                pos = Math.max(length + pos, 0);
            }

            if (!(pos+removeCount < length))
                removeCount = length - pos;

            var removed = this.slice(pos, pos+removeCount);
            var insert = slice.call(arguments, 2);
            var add = insert.length;            
            if (pos === length) {
                if (add) {
                    this.push.apply(this, insert);
                }
            } else {
                var remove = Math.min(removeCount, length - pos);
                var tailOldPos = pos + remove;
                var tailNewPos = tailOldPos + add - remove;
                var tailCount = length - tailOldPos;
                var lengthAfterRemove = length - remove;

                if (tailNewPos < tailOldPos) { // case A
                    for (var i = 0; i < tailCount; ++i) {
                        this[tailNewPos+i] = this[tailOldPos+i];
                    }
                } else if (tailNewPos > tailOldPos) { // case B
                    for (i = tailCount; i--; ) {
                        this[tailNewPos+i] = this[tailOldPos+i];
                    }
                } // else, add == remove (nothing to do)

                if (add && pos === lengthAfterRemove) {
                    this.length = lengthAfterRemove; // truncate array
                    this.push.apply(this, insert);
                } else {
                    this.length = lengthAfterRemove + add; // reserves space
                    for (i = 0; i < add; ++i) {
                        this[pos+i] = insert[i];
                    }
                }
            }
            return removed;
        };
    }
}
if (!Array.isArray) {
    Array.isArray = function isArray(obj) {
        return _toString(obj) == "[object Array]";
    };
}
var boxedString = Object("a"),
    splitString = boxedString[0] != "a" || !(0 in boxedString);

if (!Array.prototype.forEach) {
    Array.prototype.forEach = function forEach(fun /*, thisp*/) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                object,
            thisp = arguments[1],
            i = -1,
            length = self.length >>> 0;
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(); // TODO message
        }

        while (++i < length) {
            if (i in self) {
                fun.call(thisp, self[i], i, object);
            }
        }
    };
}
if (!Array.prototype.map) {
    Array.prototype.map = function map(fun /*, thisp*/) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                object,
            length = self.length >>> 0,
            result = Array(length),
            thisp = arguments[1];
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(fun + " is not a function");
        }

        for (var i = 0; i < length; i++) {
            if (i in self)
                result[i] = fun.call(thisp, self[i], i, object);
        }
        return result;
    };
}
if (!Array.prototype.filter) {
    Array.prototype.filter = function filter(fun /*, thisp */) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                    object,
            length = self.length >>> 0,
            result = [],
            value,
            thisp = arguments[1];
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(fun + " is not a function");
        }

        for (var i = 0; i < length; i++) {
            if (i in self) {
                value = self[i];
                if (fun.call(thisp, value, i, object)) {
                    result.push(value);
                }
            }
        }
        return result;
    };
}
if (!Array.prototype.every) {
    Array.prototype.every = function every(fun /*, thisp */) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                object,
            length = self.length >>> 0,
            thisp = arguments[1];
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(fun + " is not a function");
        }

        for (var i = 0; i < length; i++) {
            if (i in self && !fun.call(thisp, self[i], i, object)) {
                return false;
            }
        }
        return true;
    };
}
if (!Array.prototype.some) {
    Array.prototype.some = function some(fun /*, thisp */) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                object,
            length = self.length >>> 0,
            thisp = arguments[1];
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(fun + " is not a function");
        }

        for (var i = 0; i < length; i++) {
            if (i in self && fun.call(thisp, self[i], i, object)) {
                return true;
            }
        }
        return false;
    };
}
if (!Array.prototype.reduce) {
    Array.prototype.reduce = function reduce(fun /*, initial*/) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                object,
            length = self.length >>> 0;
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(fun + " is not a function");
        }
        if (!length && arguments.length == 1) {
            throw new TypeError("reduce of empty array with no initial value");
        }

        var i = 0;
        var result;
        if (arguments.length >= 2) {
            result = arguments[1];
        } else {
            do {
                if (i in self) {
                    result = self[i++];
                    break;
                }
                if (++i >= length) {
                    throw new TypeError("reduce of empty array with no initial value");
                }
            } while (true);
        }

        for (; i < length; i++) {
            if (i in self) {
                result = fun.call(void 0, result, self[i], i, object);
            }
        }

        return result;
    };
}
if (!Array.prototype.reduceRight) {
    Array.prototype.reduceRight = function reduceRight(fun /*, initial*/) {
        var object = toObject(this),
            self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                object,
            length = self.length >>> 0;
        if (_toString(fun) != "[object Function]") {
            throw new TypeError(fun + " is not a function");
        }
        if (!length && arguments.length == 1) {
            throw new TypeError("reduceRight of empty array with no initial value");
        }

        var result, i = length - 1;
        if (arguments.length >= 2) {
            result = arguments[1];
        } else {
            do {
                if (i in self) {
                    result = self[i--];
                    break;
                }
                if (--i < 0) {
                    throw new TypeError("reduceRight of empty array with no initial value");
                }
            } while (true);
        }

        do {
            if (i in this) {
                result = fun.call(void 0, result, self[i], i, object);
            }
        } while (i--);

        return result;
    };
}
if (!Array.prototype.indexOf || ([0, 1].indexOf(1, 2) != -1)) {
    Array.prototype.indexOf = function indexOf(sought /*, fromIndex */ ) {
        var self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                toObject(this),
            length = self.length >>> 0;

        if (!length) {
            return -1;
        }

        var i = 0;
        if (arguments.length > 1) {
            i = toInteger(arguments[1]);
        }
        i = i >= 0 ? i : Math.max(0, length + i);
        for (; i < length; i++) {
            if (i in self && self[i] === sought) {
                return i;
            }
        }
        return -1;
    };
}
if (!Array.prototype.lastIndexOf || ([0, 1].lastIndexOf(0, -3) != -1)) {
    Array.prototype.lastIndexOf = function lastIndexOf(sought /*, fromIndex */) {
        var self = splitString && _toString(this) == "[object String]" ?
                this.split("") :
                toObject(this),
            length = self.length >>> 0;

        if (!length) {
            return -1;
        }
        var i = length - 1;
        if (arguments.length > 1) {
            i = Math.min(i, toInteger(arguments[1]));
        }
        i = i >= 0 ? i : length - Math.abs(i);
        for (; i >= 0; i--) {
            if (i in self && sought === self[i]) {
                return i;
            }
        }
        return -1;
    };
}
if (!Object.getPrototypeOf) {
    Object.getPrototypeOf = function getPrototypeOf(object) {
        return object.__proto__ || (
            object.constructor ?
            object.constructor.prototype :
            prototypeOfObject
        );
    };
}
if (!Object.getOwnPropertyDescriptor) {
    var ERR_NON_OBJECT = "Object.getOwnPropertyDescriptor called on a " +
                         "non-object: ";
    Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {
        if ((typeof object != "object" && typeof object != "function") || object === null)
            throw new TypeError(ERR_NON_OBJECT + object);
        if (!owns(object, property))
            return;

        var descriptor, getter, setter;
        descriptor =  { enumerable: true, configurable: true };
        if (supportsAccessors) {
            var prototype = object.__proto__;
            object.__proto__ = prototypeOfObject;

            var getter = lookupGetter(object, property);
            var setter = lookupSetter(object, property);
            object.__proto__ = prototype;

            if (getter || setter) {
                if (getter) descriptor.get = getter;
                if (setter) descriptor.set = setter;
                return descriptor;
            }
        }
        descriptor.value = object[property];
        return descriptor;
    };
}
if (!Object.getOwnPropertyNames) {
    Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
        return Object.keys(object);
    };
}
if (!Object.create) {
    var createEmpty;
    if (Object.prototype.__proto__ === null) {
        createEmpty = function () {
            return { "__proto__": null };
        };
    } else {
        createEmpty = function () {
            var empty = {};
            for (var i in empty)
                empty[i] = null;
            empty.constructor =
            empty.hasOwnProperty =
            empty.propertyIsEnumerable =
            empty.isPrototypeOf =
            empty.toLocaleString =
            empty.toString =
            empty.valueOf =
            empty.__proto__ = null;
            return empty;
        }
    }

    Object.create = function create(prototype, properties) {
        var object;
        if (prototype === null) {
            object = createEmpty();
        } else {
            if (typeof prototype != "object")
                throw new TypeError("typeof prototype["+(typeof prototype)+"] != 'object'");
            var Type = function () {};
            Type.prototype = prototype;
            object = new Type();
            object.__proto__ = prototype;
        }
        if (properties !== void 0)
            Object.defineProperties(object, properties);
        return object;
    };
}

function doesDefinePropertyWork(object) {
    try {
        Object.defineProperty(object, "sentinel", {});
        return "sentinel" in object;
    } catch (exception) {
    }
}
if (Object.defineProperty) {
    var definePropertyWorksOnObject = doesDefinePropertyWork({});
    var definePropertyWorksOnDom = typeof document == "undefined" ||
        doesDefinePropertyWork(document.createElement("div"));
    if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {
        var definePropertyFallback = Object.defineProperty;
    }
}

if (!Object.defineProperty || definePropertyFallback) {
    var ERR_NON_OBJECT_DESCRIPTOR = "Property description must be an object: ";
    var ERR_NON_OBJECT_TARGET = "Object.defineProperty called on non-object: "
    var ERR_ACCESSORS_NOT_SUPPORTED = "getters & setters can not be defined " +
                                      "on this javascript engine";

    Object.defineProperty = function defineProperty(object, property, descriptor) {
        if ((typeof object != "object" && typeof object != "function") || object === null)
            throw new TypeError(ERR_NON_OBJECT_TARGET + object);
        if ((typeof descriptor != "object" && typeof descriptor != "function") || descriptor === null)
            throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);
        if (definePropertyFallback) {
            try {
                return definePropertyFallback.call(Object, object, property, descriptor);
            } catch (exception) {
            }
        }
        if (owns(descriptor, "value")) {

            if (supportsAccessors && (lookupGetter(object, property) ||
                                      lookupSetter(object, property)))
            {
                var prototype = object.__proto__;
                object.__proto__ = prototypeOfObject;
                delete object[property];
                object[property] = descriptor.value;
                object.__proto__ = prototype;
            } else {
                object[property] = descriptor.value;
            }
        } else {
            if (!supportsAccessors)
                throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
            if (owns(descriptor, "get"))
                defineGetter(object, property, descriptor.get);
            if (owns(descriptor, "set"))
                defineSetter(object, property, descriptor.set);
        }

        return object;
    };
}
if (!Object.defineProperties) {
    Object.defineProperties = function defineProperties(object, properties) {
        for (var property in properties) {
            if (owns(properties, property))
                Object.defineProperty(object, property, properties[property]);
        }
        return object;
    };
}
if (!Object.seal) {
    Object.seal = function seal(object) {
        return object;
    };
}
if (!Object.freeze) {
    Object.freeze = function freeze(object) {
        return object;
    };
}
try {
    Object.freeze(function () {});
} catch (exception) {
    Object.freeze = (function freeze(freezeObject) {
        return function freeze(object) {
            if (typeof object == "function") {
                return object;
            } else {
                return freezeObject(object);
            }
        };
    })(Object.freeze);
}
if (!Object.preventExtensions) {
    Object.preventExtensions = function preventExtensions(object) {
        return object;
    };
}
if (!Object.isSealed) {
    Object.isSealed = function isSealed(object) {
        return false;
    };
}
if (!Object.isFrozen) {
    Object.isFrozen = function isFrozen(object) {
        return false;
    };
}
if (!Object.isExtensible) {
    Object.isExtensible = function isExtensible(object) {
        if (Object(object) === object) {
            throw new TypeError(); // TODO message
        }
        var name = '';
        while (owns(object, name)) {
            name += '?';
        }
        object[name] = true;
        var returnValue = owns(object, name);
        delete object[name];
        return returnValue;
    };
}
if (!Object.keys) {
    var hasDontEnumBug = true,
        dontEnums = [
            "toString",
            "toLocaleString",
            "valueOf",
            "hasOwnProperty",
            "isPrototypeOf",
            "propertyIsEnumerable",
            "constructor"
        ],
        dontEnumsLength = dontEnums.length;

    for (var key in {"toString": null}) {
        hasDontEnumBug = false;
    }

    Object.keys = function keys(object) {

        if (
            (typeof object != "object" && typeof object != "function") ||
            object === null
        ) {
            throw new TypeError("Object.keys called on a non-object");
        }

        var keys = [];
        for (var name in object) {
            if (owns(object, name)) {
                keys.push(name);
            }
        }

        if (hasDontEnumBug) {
            for (var i = 0, ii = dontEnumsLength; i < ii; i++) {
                var dontEnum = dontEnums[i];
                if (owns(object, dontEnum)) {
                    keys.push(dontEnum);
                }
            }
        }
        return keys;
    };

}
if (!Date.now) {
    Date.now = function now() {
        return new Date().getTime();
    };
}
var ws = "\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003" +
    "\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028" +
    "\u2029\uFEFF";
if (!String.prototype.trim || ws.trim()) {
    ws = "[" + ws + "]";
    var trimBeginRegexp = new RegExp("^" + ws + ws + "*"),
        trimEndRegexp = new RegExp(ws + ws + "*$");
    String.prototype.trim = function trim() {
        return String(this).replace(trimBeginRegexp, "").replace(trimEndRegexp, "");
    };
}

function toInteger(n) {
    n = +n;
    if (n !== n) { // isNaN
        n = 0;
    } else if (n !== 0 && n !== (1/0) && n !== -(1/0)) {
        n = (n > 0 || -1) * Math.floor(Math.abs(n));
    }
    return n;
}

function isPrimitive(input) {
    var type = typeof input;
    return (
        input === null ||
        type === "undefined" ||
        type === "boolean" ||
        type === "number" ||
        type === "string"
    );
}

function toPrimitive(input) {
    var val, valueOf, toString;
    if (isPrimitive(input)) {
        return input;
    }
    valueOf = input.valueOf;
    if (typeof valueOf === "function") {
        val = valueOf.call(input);
        if (isPrimitive(val)) {
            return val;
        }
    }
    toString = input.toString;
    if (typeof toString === "function") {
        val = toString.call(input);
        if (isPrimitive(val)) {
            return val;
        }
    }
    throw new TypeError();
}
var toObject = function (o) {
    if (o == null) { // this matches both null and undefined
        throw new TypeError("can't convert "+o+" to object");
    }
    return Object(o);
};

});

ace.define("ace/lib/fixoldbrowsers",["require","exports","module","ace/lib/regexp","ace/lib/es5-shim"], function(acequire, exports, module) {
"use strict";

acequire("./regexp");
acequire("./es5-shim");

});

ace.define("ace/lib/dom",["require","exports","module"], function(acequire, exports, module) {
"use strict";

var XHTML_NS = "http://www.w3.org/1999/xhtml";

exports.getDocumentHead = function(doc) {
    if (!doc)
        doc = document;
    return doc.head || doc.getElementsByTagName("head")[0] || doc.documentElement;
};

exports.createElement = function(tag, ns) {
    return document.createElementNS ?
           document.createElementNS(ns || XHTML_NS, tag) :
           document.createElement(tag);
};

exports.hasCssClass = function(el, name) {
    var classes = (el.className + "").split(/\s+/g);
    return classes.indexOf(name) !== -1;
};
exports.addCssClass = function(el, name) {
    if (!exports.hasCssClass(el, name)) {
        el.className += " " + name;
    }
};
exports.removeCssClass = function(el, name) {
    var classes = el.className.split(/\s+/g);
    while (true) {
        var index = classes.indexOf(name);
        if (index == -1) {
            break;
        }
        classes.splice(index, 1);
    }
    el.className = classes.join(" ");
};

exports.toggleCssClass = function(el, name) {
    var classes = el.className.split(/\s+/g), add = true;
    while (true) {
        var index = classes.indexOf(name);
        if (index == -1) {
            break;
        }
        add = false;
        classes.splice(index, 1);
    }
    if (add)
        classes.push(name);

    el.className = classes.join(" ");
    return add;
};
exports.setCssClass = function(node, className, include) {
    if (include) {
        exports.addCssClass(node, className);
    } else {
        exports.removeCssClass(node, className);
    }
};

exports.hasCssString = function(id, doc) {
    var index = 0, sheets;
    doc = doc || document;

    if (doc.createStyleSheet && (sheets = doc.styleSheets)) {
        while (index < sheets.length)
            if (sheets[index++].owningElement.id === id) return true;
    } else if ((sheets = doc.getElementsByTagName("style"))) {
        while (index < sheets.length)
            if (sheets[index++].id === id) return true;
    }

    return false;
};

exports.importCssString = function importCssString(cssText, id, doc) {
    doc = doc || document;
    if (id && exports.hasCssString(id, doc))
        return null;
    
    var style;
    
    if (id)
        cssText += "\n/*# sourceURL=ace/css/" + id + " */";
    
    if (doc.createStyleSheet) {
        style = doc.createStyleSheet();
        style.cssText = cssText;
        if (id)
            style.owningElement.id = id;
    } else {
        style = exports.createElement("style");
        style.appendChild(doc.createTextNode(cssText));
        if (id)
            style.id = id;

        exports.getDocumentHead(doc).appendChild(style);
    }
};

exports.importCssStylsheet = function(uri, doc) {
    if (doc.createStyleSheet) {
        doc.createStyleSheet(uri);
    } else {
        var link = exports.createElement('link');
        link.rel = 'stylesheet';
        link.href = uri;

        exports.getDocumentHead(doc).appendChild(link);
    }
};

exports.getInnerWidth = function(element) {
    return (
        parseInt(exports.computedStyle(element, "paddingLeft"), 10) +
        parseInt(exports.computedStyle(element, "paddingRight"), 10) + 
        element.clientWidth
    );
};

exports.getInnerHeight = function(element) {
    return (
        parseInt(exports.computedStyle(element, "paddingTop"), 10) +
        parseInt(exports.computedStyle(element, "paddingBottom"), 10) +
        element.clientHeight
    );
};

exports.scrollbarWidth = function(document) {
    var inner = exports.createElement("ace_inner");
    inner.style.width = "100%";
    inner.style.minWidth = "0px";
    inner.style.height = "200px";
    inner.style.display = "block";

    var outer = exports.createElement("ace_outer");
    var style = outer.style;

    style.position = "absolute";
    style.left = "-10000px";
    style.overflow = "hidden";
    style.width = "200px";
    style.minWidth = "0px";
    style.height = "150px";
    style.display = "block";

    outer.appendChild(inner);

    var body = document.documentElement;
    body.appendChild(outer);

    var noScrollbar = inner.offsetWidth;

    style.overflow = "scroll";
    var withScrollbar = inner.offsetWidth;

    if (noScrollbar == withScrollbar) {
        withScrollbar = outer.clientWidth;
    }

    body.removeChild(outer);

    return noScrollbar-withScrollbar;
};

if (typeof document == "undefined") {
    exports.importCssString = function() {};
    return;
}

if (window.pageYOffset !== undefined) {
    exports.getPageScrollTop = function() {
        return window.pageYOffset;
    };

    exports.getPageScrollLeft = function() {
        return window.pageXOffset;
    };
}
else {
    exports.getPageScrollTop = function() {
        return document.body.scrollTop;
    };

    exports.getPageScrollLeft = function() {
        return document.body.scrollLeft;
    };
}

if (window.getComputedStyle)
    exports.computedStyle = function(element, style) {
        if (style)
            return (window.getComputedStyle(element, "") || {})[style] || "";
        return window.getComputedStyle(element, "") || {};
    };
else
    exports.computedStyle = function(element, style) {
        if (style)
            return element.currentStyle[style];
        return element.currentStyle;
    };
exports.setInnerHtml = function(el, innerHtml) {
    var element = el.cloneNode(false);//document.createElement("div");
    element.innerHTML = innerHtml;
    el.parentNode.replaceChild(element, el);
    return element;
};

if ("textContent" in document.documentElement) {
    exports.setInnerText = function(el, innerText) {
        el.textContent = innerText;
    };

    exports.getInnerText = function(el) {
        return el.textContent;
    };
}
else {
    exports.setInnerText = function(el, innerText) {
        el.innerText = innerText;
    };

    exports.getInnerText = function(el) {
        return el.innerText;
    };
}

exports.getParentWindow = function(document) {
    return document.defaultView || document.parentWindow;
};

});

ace.define("ace/lib/oop",["require","exports","module"], function(acequire, exports, module) {
"use strict";

exports.inherits = function(ctor, superCtor) {
    ctor.super_ = superCtor;
    ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
            value: ctor,
            enumerable: false,
            writable: true,
            configurable: true
        }
    });
};

exports.mixin = function(obj, mixin) {
    for (var key in mixin) {
        obj[key] = mixin[key];
    }
    return obj;
};

exports.implement = function(proto, mixin) {
    exports.mixin(proto, mixin);
};

});

ace.define("ace/lib/keys",["require","exports","module","ace/lib/fixoldbrowsers","ace/lib/oop"], function(acequire, exports, module) {
"use strict";

acequire("./fixoldbrowsers");

var oop = acequire("./oop");
var Keys = (function() {
    var ret = {
        MODIFIER_KEYS: {
            16: 'Shift', 17: 'Ctrl', 18: 'Alt', 224: 'Meta'
        },

        KEY_MODS: {
            "ctrl": 1, "alt": 2, "option" : 2, "shift": 4,
            "super": 8, "meta": 8, "command": 8, "cmd": 8
        },

        FUNCTION_KEYS : {
            8  : "Backspace",
            9  : "Tab",
            13 : "Return",
            19 : "Pause",
            27 : "Esc",
            32 : "Space",
            33 : "PageUp",
            34 : "PageDown",
            35 : "End",
            36 : "Home",
            37 : "Left",
            38 : "Up",
            39 : "Right",
            40 : "Down",
            44 : "Print",
            45 : "Insert",
            46 : "Delete",
            96 : "Numpad0",
            97 : "Numpad1",
            98 : "Numpad2",
            99 : "Numpad3",
            100: "Numpad4",
            101: "Numpad5",
            102: "Numpad6",
            103: "Numpad7",
            104: "Numpad8",
            105: "Numpad9",
            '-13': "NumpadEnter",
            112: "F1",
            113: "F2",
            114: "F3",
            115: "F4",
            116: "F5",
            117: "F6",
            118: "F7",
            119: "F8",
            120: "F9",
            121: "F10",
            122: "F11",
            123: "F12",
            144: "Numlock",
            145: "Scrolllock"
        },

        PRINTABLE_KEYS: {
           32: ' ',  48: '0',  49: '1',  50: '2',  51: '3',  52: '4', 53:  '5',
           54: '6',  55: '7',  56: '8',  57: '9',  59: ';',  61: '=', 65:  'a',
           66: 'b',  67: 'c',  68: 'd',  69: 'e',  70: 'f',  71: 'g', 72:  'h',
           73: 'i',  74: 'j',  75: 'k',  76: 'l',  77: 'm',  78: 'n', 79:  'o',
           80: 'p',  81: 'q',  82: 'r',  83: 's',  84: 't',  85: 'u', 86:  'v',
           87: 'w',  88: 'x',  89: 'y',  90: 'z', 107: '+', 109: '-', 110: '.',
          186: ';', 187: '=', 188: ',', 189: '-', 190: '.', 191: '/', 192: '`',
          219: '[', 220: '\\',221: ']', 222: "'", 111: '/', 106: '*'
        }
    };
    var name, i;
    for (i in ret.FUNCTION_KEYS) {
        name = ret.FUNCTION_KEYS[i].toLowerCase();
        ret[name] = parseInt(i, 10);
    }
    for (i in ret.PRINTABLE_KEYS) {
        name = ret.PRINTABLE_KEYS[i].toLowerCase();
        ret[name] = parseInt(i, 10);
    }
    oop.mixin(ret, ret.MODIFIER_KEYS);
    oop.mixin(ret, ret.PRINTABLE_KEYS);
    oop.mixin(ret, ret.FUNCTION_KEYS);
    ret.enter = ret["return"];
    ret.escape = ret.esc;
    ret.del = ret["delete"];
    ret[173] = '-';
    
    (function() {
        var mods = ["cmd", "ctrl", "alt", "shift"];
        for (var i = Math.pow(2, mods.length); i--;) {            
            ret.KEY_MODS[i] = mods.filter(function(x) {
                return i & ret.KEY_MODS[x];
            }).join("-") + "-";
        }
    })();

    ret.KEY_MODS[0] = "";
    ret.KEY_MODS[-1] = "input-";

    return ret;
})();
oop.mixin(exports, Keys);

exports.keyCodeToString = function(keyCode) {
    var keyString = Keys[keyCode];
    if (typeof keyString != "string")
        keyString = String.fromCharCode(keyCode);
    return keyString.toLowerCase();
};

});

ace.define("ace/lib/useragent",["require","exports","module"], function(acequire, exports, module) {
"use strict";
exports.OS = {
    LINUX: "LINUX",
    MAC: "MAC",
    WINDOWS: "WINDOWS"
};
exports.getOS = function() {
    if (exports.isMac) {
        return exports.OS.MAC;
    } else if (exports.isLinux) {
        return exports.OS.LINUX;
    } else {
        return exports.OS.WINDOWS;
    }
};
if (typeof navigator != "object")
    return;

var os = (navigator.platform.match(/mac|win|linux/i) || ["other"])[0].toLowerCase();
var ua = navigator.userAgent;
exports.isWin = (os == "win");
exports.isMac = (os == "mac");
exports.isLinux = (os == "linux");
exports.isIE = 
    (navigator.appName == "Microsoft Internet Explorer" || navigator.appName.indexOf("MSAppHost") >= 0)
    ? parseFloat((ua.match(/(?:MSIE |Trident\/[0-9]+[\.0-9]+;.*rv:)([0-9]+[\.0-9]+)/)||[])[1])
    : parseFloat((ua.match(/(?:Trident\/[0-9]+[\.0-9]+;.*rv:)([0-9]+[\.0-9]+)/)||[])[1]); // for ie
    
exports.isOldIE = exports.isIE && exports.isIE < 9;
exports.isGecko = exports.isMozilla = (window.Controllers || window.controllers) && window.navigator.product === "Gecko";
exports.isOldGecko = exports.isGecko && parseInt((ua.match(/rv:(\d+)/)||[])[1], 10) < 4;
exports.isOpera = window.opera && Object.prototype.toString.call(window.opera) == "[object Opera]";
exports.isWebKit = parseFloat(ua.split("WebKit/")[1]) || undefined;

exports.isChrome = parseFloat(ua.split(" Chrome/")[1]) || undefined;

exports.isAIR = ua.indexOf("AdobeAIR") >= 0;

exports.isIPad = ua.indexOf("iPad") >= 0;

exports.isChromeOS = ua.indexOf(" CrOS ") >= 0;

exports.isIOS = /iPad|iPhone|iPod/.test(ua) && !window.MSStream;

if (exports.isIOS) exports.isMac = true;

});

ace.define("ace/lib/event",["require","exports","module","ace/lib/keys","ace/lib/useragent"], function(acequire, exports, module) {
"use strict";

var keys = acequire("./keys");
var useragent = acequire("./useragent");

var pressedKeys = null;
var ts = 0;

exports.addListener = function(elem, type, callback) {
    if (elem.addEventListener) {
        return elem.addEventListener(type, callback, false);
    }
    if (elem.attachEvent) {
        var wrapper = function() {
            callback.call(elem, window.event);
        };
        callback._wrapper = wrapper;
        elem.attachEvent("on" + type, wrapper);
    }
};

exports.removeListener = function(elem, type, callback) {
    if (elem.removeEventListener) {
        return elem.removeEventListener(type, callback, false);
    }
    if (elem.detachEvent) {
        elem.detachEvent("on" + type, callback._wrapper || callback);
    }
};
exports.stopEvent = function(e) {
    exports.stopPropagation(e);
    exports.preventDefault(e);
    return false;
};

exports.stopPropagation = function(e) {
    if (e.stopPropagation)
        e.stopPropagation();
    else
        e.cancelBubble = true;
};

exports.preventDefault = function(e) {
    if (e.preventDefault)
        e.preventDefault();
    else
        e.returnValue = false;
};
exports.getButton = function(e) {
    if (e.type == "dblclick")
        return 0;
    if (e.type == "contextmenu" || (useragent.isMac && (e.ctrlKey && !e.altKey && !e.shiftKey)))
        return 2;
    if (e.preventDefault) {
        return e.button;
    }
    else {
        return {1:0, 2:2, 4:1}[e.button];
    }
};

exports.capture = function(el, eventHandler, releaseCaptureHandler) {
    function onMouseUp(e) {
        eventHandler && eventHandler(e);
        releaseCaptureHandler && releaseCaptureHandler(e);

        exports.removeListener(document, "mousemove", eventHandler, true);
        exports.removeListener(document, "mouseup", onMouseUp, true);
        exports.removeListener(document, "dragstart", onMouseUp, true);
    }

    exports.addListener(document, "mousemove", eventHandler, true);
    exports.addListener(document, "mouseup", onMouseUp, true);
    exports.addListener(document, "dragstart", onMouseUp, true);
    
    return onMouseUp;
};

exports.addTouchMoveListener = function (el, callback) {
    var startx, starty;
    exports.addListener(el, "touchstart", function (e) {
        var touches = e.touches;
        var touchObj = touches[0];
        startx = touchObj.clientX;
        starty = touchObj.clientY;
    });
    exports.addListener(el, "touchmove", function (e) {
        var touches = e.touches;
        if (touches.length > 1) return;

        var touchObj = touches[0];

        e.wheelX = startx - touchObj.clientX;
        e.wheelY = starty - touchObj.clientY;

        startx = touchObj.clientX;
        starty = touchObj.clientY;

        callback(e);
    });
};

exports.addMouseWheelListener = function(el, callback) {
    if ("onmousewheel" in el) {
        exports.addListener(el, "mousewheel", function(e) {
            var factor = 8;
            if (e.wheelDeltaX !== undefined) {
                e.wheelX = -e.wheelDeltaX / factor;
                e.wheelY = -e.wheelDeltaY / factor;
            } else {
                e.wheelX = 0;
                e.wheelY = -e.wheelDelta / factor;
            }
            callback(e);
        });
    } else if ("onwheel" in el) {
        exports.addListener(el, "wheel",  function(e) {
            var factor = 0.35;
            switch (e.deltaMode) {
                case e.DOM_DELTA_PIXEL:
                    e.wheelX = e.deltaX * factor || 0;
                    e.wheelY = e.deltaY * factor || 0;
                    break;
                case e.DOM_DELTA_LINE:
                case e.DOM_DELTA_PAGE:
                    e.wheelX = (e.deltaX || 0) * 5;
                    e.wheelY = (e.deltaY || 0) * 5;
                    break;
            }
            
            callback(e);
        });
    } else {
        exports.addListener(el, "DOMMouseScroll", function(e) {
            if (e.axis && e.axis == e.HORIZONTAL_AXIS) {
                e.wheelX = (e.detail || 0) * 5;
                e.wheelY = 0;
            } else {
                e.wheelX = 0;
                e.wheelY = (e.detail || 0) * 5;
            }
            callback(e);
        });
    }
};

exports.addMultiMouseDownListener = function(elements, timeouts, eventHandler, callbackName) {
    var clicks = 0;
    var startX, startY, timer; 
    var eventNames = {
        2: "dblclick",
        3: "tripleclick",
        4: "quadclick"
    };

    function onMousedown(e) {
        if (exports.getButton(e) !== 0) {
            clicks = 0;
        } else if (e.detail > 1) {
            clicks++;
            if (clicks > 4)
                clicks = 1;
        } else {
            clicks = 1;
        }
        if (useragent.isIE) {
            var isNewClick = Math.abs(e.clientX - startX) > 5 || Math.abs(e.clientY - startY) > 5;
            if (!timer || isNewClick)
                clicks = 1;
            if (timer)
                clearTimeout(timer);
            timer = setTimeout(function() {timer = null;}, timeouts[clicks - 1] || 600);

            if (clicks == 1) {
                startX = e.clientX;
                startY = e.clientY;
            }
        }
        
        e._clicks = clicks;

        eventHandler[callbackName]("mousedown", e);

        if (clicks > 4)
            clicks = 0;
        else if (clicks > 1)
            return eventHandler[callbackName](eventNames[clicks], e);
    }
    function onDblclick(e) {
        clicks = 2;
        if (timer)
            clearTimeout(timer);
        timer = setTimeout(function() {timer = null;}, timeouts[clicks - 1] || 600);
        eventHandler[callbackName]("mousedown", e);
        eventHandler[callbackName](eventNames[clicks], e);
    }
    if (!Array.isArray(elements))
        elements = [elements];
    elements.forEach(function(el) {
        exports.addListener(el, "mousedown", onMousedown);
        if (useragent.isOldIE)
            exports.addListener(el, "dblclick", onDblclick);
    });
};

var getModifierHash = useragent.isMac && useragent.isOpera && !("KeyboardEvent" in window)
    ? function(e) {
        return 0 | (e.metaKey ? 1 : 0) | (e.altKey ? 2 : 0) | (e.shiftKey ? 4 : 0) | (e.ctrlKey ? 8 : 0);
    }
    : function(e) {
        return 0 | (e.ctrlKey ? 1 : 0) | (e.altKey ? 2 : 0) | (e.shiftKey ? 4 : 0) | (e.metaKey ? 8 : 0);
    };

exports.getModifierString = function(e) {
    return keys.KEY_MODS[getModifierHash(e)];
};

function normalizeCommandKeys(callback, e, keyCode) {
    var hashId = getModifierHash(e);

    if (!useragent.isMac && pressedKeys) {
        if (e.getModifierState && (e.getModifierState("OS") || e.getModifierState("Win")))
            hashId |= 8;
        if (pressedKeys.altGr) {
            if ((3 & hashId) != 3)
                pressedKeys.altGr = 0;
            else
                return;
        }
        if (keyCode === 18 || keyCode === 17) {
            var location = "location" in e ? e.location : e.keyLocation;
            if (keyCode === 17 && location === 1) {
                if (pressedKeys[keyCode] == 1)
                    ts = e.timeStamp;
            } else if (keyCode === 18 && hashId === 3 && location === 2) {
                var dt = e.timeStamp - ts;
                if (dt < 50)
                    pressedKeys.altGr = true;
            }
        }
    }
    
    if (keyCode in keys.MODIFIER_KEYS) {
        keyCode = -1;
    }
    if (hashId & 8 && (keyCode >= 91 && keyCode <= 93)) {
        keyCode = -1;
    }
    
    if (!hashId && keyCode === 13) {
        var location = "location" in e ? e.location : e.keyLocation;
        if (location === 3) {
            callback(e, hashId, -keyCode);
            if (e.defaultPrevented)
                return;
        }
    }
    
    if (useragent.isChromeOS && hashId & 8) {
        callback(e, hashId, keyCode);
        if (e.defaultPrevented)
            return;
        else
            hashId &= ~8;
    }
    if (!hashId && !(keyCode in keys.FUNCTION_KEYS) && !(keyCode in keys.PRINTABLE_KEYS)) {
        return false;
    }
    
    return callback(e, hashId, keyCode);
}


exports.addCommandKeyListener = function(el, callback) {
    var addListener = exports.addListener;
    if (useragent.isOldGecko || (useragent.isOpera && !("KeyboardEvent" in window))) {
        var lastKeyDownKeyCode = null;
        addListener(el, "keydown", function(e) {
            lastKeyDownKeyCode = e.keyCode;
        });
        addListener(el, "keypress", function(e) {
            return normalizeCommandKeys(callback, e, lastKeyDownKeyCode);
        });
    } else {
        var lastDefaultPrevented = null;

        addListener(el, "keydown", function(e) {
            pressedKeys[e.keyCode] = (pressedKeys[e.keyCode] || 0) + 1;
            var result = normalizeCommandKeys(callback, e, e.keyCode);
            lastDefaultPrevented = e.defaultPrevented;
            return result;
        });

        addListener(el, "keypress", function(e) {
            if (lastDefaultPrevented && (e.ctrlKey || e.altKey || e.shiftKey || e.metaKey)) {
                exports.stopEvent(e);
                lastDefaultPrevented = null;
            }
        });

        addListener(el, "keyup", function(e) {
            pressedKeys[e.keyCode] = null;
        });

        if (!pressedKeys) {
            resetPressedKeys();
            addListener(window, "focus", resetPressedKeys);
        }
    }
};
function resetPressedKeys() {
    pressedKeys = Object.create(null);
}

if (typeof window == "object" && window.postMessage && !useragent.isOldIE) {
    var postMessageId = 1;
    exports.nextTick = function(callback, win) {
        win = win || window;
        var messageName = "zero-timeout-message-" + postMessageId;
        exports.addListener(win, "message", function listener(e) {
            if (e.data == messageName) {
                exports.stopPropagation(e);
                exports.removeListener(win, "message", listener);
                callback();
            }
        });
        win.postMessage(messageName, "*");
    };
}


exports.nextFrame = typeof window == "object" && (window.requestAnimationFrame
    || window.mozRequestAnimationFrame
    || window.webkitRequestAnimationFrame
    || window.msRequestAnimationFrame
    || window.oRequestAnimationFrame);

if (exports.nextFrame)
    exports.nextFrame = exports.nextFrame.bind(window);
else
    exports.nextFrame = function(callback) {
        setTimeout(callback, 17);
    };
});

ace.define("ace/lib/lang",["require","exports","module"], function(acequire, exports, module) {
"use strict";

exports.last = function(a) {
    return a[a.length - 1];
};

exports.stringReverse = function(string) {
    return string.split("").reverse().join("");
};

exports.stringRepeat = function (string, count) {
    var result = '';
    while (count > 0) {
        if (count & 1)
            result += string;

        if (count >>= 1)
            string += string;
    }
    return result;
};

var trimBeginRegexp = /^\s\s*/;
var trimEndRegexp = /\s\s*$/;

exports.stringTrimLeft = function (string) {
    return string.replace(trimBeginRegexp, '');
};

exports.stringTrimRight = function (string) {
    return string.replace(trimEndRegexp, '');
};

exports.copyObject = function(obj) {
    var copy = {};
    for (var key in obj) {
        copy[key] = obj[key];
    }
    return copy;
};

exports.copyArray = function(array){
    var copy = [];
    for (var i=0, l=array.length; i<l; i++) {
        if (array[i] && typeof array[i] == "object")
            copy[i] = this.copyObject(array[i]);
        else 
            copy[i] = array[i];
    }
    return copy;
};

exports.deepCopy = function deepCopy(obj) {
    if (typeof obj !== "object" || !obj)
        return obj;
    var copy;
    if (Array.isArray(obj)) {
        copy = [];
        for (var key = 0; key < obj.length; key++) {
            copy[key] = deepCopy(obj[key]);
        }
        return copy;
    }
    if (Object.prototype.toString.call(obj) !== "[object Object]")
        return obj;
    
    copy = {};
    for (var key in obj)
        copy[key] = deepCopy(obj[key]);
    return copy;
};

exports.arrayToMap = function(arr) {
    var map = {};
    for (var i=0; i<arr.length; i++) {
        map[arr[i]] = 1;
    }
    return map;

};

exports.createMap = function(props) {
    var map = Object.create(null);
    for (var i in props) {
        map[i] = props[i];
    }
    return map;
};
exports.arrayRemove = function(array, value) {
  for (var i = 0; i <= array.length; i++) {
    if (value === array[i]) {
      array.splice(i, 1);
    }
  }
};

exports.escapeRegExp = function(str) {
    return str.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1');
};

exports.escapeHTML = function(str) {
    return str.replace(/&/g, "&#38;").replace(/"/g, "&#34;").replace(/'/g, "&#39;").replace(/</g, "&#60;");
};

exports.getMatchOffsets = function(string, regExp) {
    var matches = [];

    string.replace(regExp, function(str) {
        matches.push({
            offset: arguments[arguments.length-2],
            length: str.length
        });
    });

    return matches;
};
exports.deferredCall = function(fcn) {
    var timer = null;
    var callback = function() {
        timer = null;
        fcn();
    };

    var deferred = function(timeout) {
        deferred.cancel();
        timer = setTimeout(callback, timeout || 0);
        return deferred;
    };

    deferred.schedule = deferred;

    deferred.call = function() {
        this.cancel();
        fcn();
        return deferred;
    };

    deferred.cancel = function() {
        clearTimeout(timer);
        timer = null;
        return deferred;
    };
    
    deferred.isPending = function() {
        return timer;
    };

    return deferred;
};


exports.delayedCall = function(fcn, defaultTimeout) {
    var timer = null;
    var callback = function() {
        timer = null;
        fcn();
    };

    var _self = function(timeout) {
        if (timer == null)
            timer = setTimeout(callback, timeout || defaultTimeout);
    };

    _self.delay = function(timeout) {
        timer && clearTimeout(timer);
        timer = setTimeout(callback, timeout || defaultTimeout);
    };
    _self.schedule = _self;

    _self.call = function() {
        this.cancel();
        fcn();
    };

    _self.cancel = function() {
        timer && clearTimeout(timer);
        timer = null;
    };

    _self.isPending = function() {
        return timer;
    };

    return _self;
};
});

ace.define("ace/keyboard/textinput_ios",["require","exports","module","ace/lib/event","ace/lib/useragent","ace/lib/dom","ace/lib/lang","ace/lib/keys"], function(acequire, exports, module) {
"use strict";

var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");
var dom = acequire("../lib/dom");
var lang = acequire("../lib/lang");
var KEYS = acequire("../lib/keys");
var MODS = KEYS.KEY_MODS;
var BROKEN_SETDATA = useragent.isChrome < 18;
var USE_IE_MIME_TYPE =  useragent.isIE;

var TextInput = function(parentNode, host) {
    var self = this;
    var text = dom.createElement("textarea");
    text.className = useragent.isIOS ? "ace_text-input ace_text-input-ios" : "ace_text-input";

    if (useragent.isTouchPad)
        text.setAttribute("x-palm-disable-auto-cap", true);

    text.setAttribute("wrap", "off");
    text.setAttribute("autocorrect", "off");
    text.setAttribute("autocapitalize", "off");
    text.setAttribute("spellcheck", false);

    text.style.opacity = "0";
    parentNode.insertBefore(text, parentNode.firstChild);

    var PLACEHOLDER = "\n aaaa a\n";

    var copied = false;
    var cut = false;
    var pasted = false;
    var inComposition = false;
    var tempStyle = '';
    var isSelectionEmpty = true;
    try { var isFocused = document.activeElement === text; } catch(e) {}

    event.addListener(text, "blur", function(e) {
        host.onBlur(e);
        isFocused = false;
    });
    event.addListener(text, "focus", function(e) {
        isFocused = true;
        host.onFocus(e);
        resetSelection();
    });
    this.focus = function() {
        if (tempStyle) return text.focus();
        text.style.position = "fixed";
        text.focus();
    };
    this.blur = function() {
        text.blur();
    };
    this.isFocused = function() {
        return isFocused;
    };
    var syncSelection = lang.delayedCall(function() {
        isFocused && resetSelection(isSelectionEmpty);
    });
    var syncValue = lang.delayedCall(function() {
         if (!inComposition) {
            text.value = PLACEHOLDER;
            isFocused && resetSelection();
         }
    });

    function resetSelection(isEmpty) {
        if (inComposition)
            return;
        inComposition = true;

        if (inputHandler) {
            selectionStart = 0;
            selectionEnd = isEmpty ? 0 : text.value.length - 1;
        } else {
            var selectionStart = 4;
            var selectionEnd = 5;
        }
        try {
            text.setSelectionRange(selectionStart, selectionEnd);
        } catch(e) {}

        inComposition = false;
    }

    function resetValue() {
        if (inComposition)
            return;
        text.value = PLACEHOLDER;
        if (useragent.isWebKit)
            syncValue.schedule();
    }

    useragent.isWebKit || host.addEventListener('changeSelection', function() {
        if (host.selection.isEmpty() != isSelectionEmpty) {
            isSelectionEmpty = !isSelectionEmpty;
            syncSelection.schedule();
        }
    });

    resetValue();
    if (isFocused)
        host.onFocus();


    var isAllSelected = function(text) {
        return text.selectionStart === 0 && text.selectionEnd === text.value.length;
    };

    var onSelect = function(e) {
        if (isAllSelected(text)) {
            host.selectAll();
            resetSelection();
        } else if (inputHandler) {
            resetSelection(host.selection.isEmpty());
        }
    };

    var inputHandler = null;
    this.setInputHandler = function(cb) {inputHandler = cb;};
    this.getInputHandler = function() {return inputHandler;};
    var afterContextMenu = false;

    var sendText = function(data) {
        if (text.selectionStart === 4 && text.selectionEnd === 5) {
          return;
        }
        if (inputHandler) {
            data = inputHandler(data);
            inputHandler = null;
        }
        if (pasted) {
            resetSelection();
            if (data)
                host.onPaste(data);
            pasted = false;
        } else if (data == PLACEHOLDER.substr(0) && text.selectionStart === 4) {
            if (afterContextMenu)
                host.execCommand("del", {source: "ace"});
            else // some versions of android do not fire keydown when pressing backspace
                host.execCommand("backspace", {source: "ace"});
        } else if (!copied) {
            if (data.substring(0, 9) == PLACEHOLDER && data.length > PLACEHOLDER.length)
                data = data.substr(9);
            else if (data.substr(0, 4) == PLACEHOLDER.substr(0, 4))
                data = data.substr(4, data.length - PLACEHOLDER.length + 1);
            else if (data.charAt(data.length - 1) == PLACEHOLDER.charAt(0))
                data = data.slice(0, -1);
            if (data == PLACEHOLDER.charAt(0)) {
            } else if (data.charAt(data.length - 1) == PLACEHOLDER.charAt(0))
                data = data.slice(0, -1);

            if (data)
                host.onTextInput(data);
        }
        if (copied) {
          copied = false;
        }
        if (afterContextMenu)
            afterContextMenu = false;
    };
    var onInput = function(e) {
        if (inComposition)
            return;
        var data = text.value;
        sendText(data);
        resetValue();
    };

    var handleClipboardData = function(e, data, forceIEMime) {
        var clipboardData = e.clipboardData || window.clipboardData;
        if (!clipboardData || BROKEN_SETDATA)
            return;
        var mime = USE_IE_MIME_TYPE || forceIEMime ? "Text" : "text/plain";
        try {
            if (data) {
                return clipboardData.setData(mime, data) !== false;
            } else {
                return clipboardData.getData(mime);
            }
        } catch(e) {
            if (!forceIEMime)
                return handleClipboardData(e, data, true);
        }
    };

    var doCopy = function(e, isCut) {
        var data = host.getCopyText();
        if (!data)
            return event.preventDefault(e);

        if (handleClipboardData(e, data)) {
            if (useragent.isIOS) {
                cut = isCut;
                text.value = "\n aa" + data + "a a\n";
                text.setSelectionRange(4, 4 + data.length);
                copied = {
                    value: data
                };
            }
            isCut ? host.onCut() : host.onCopy();
            if (!useragent.isIOS) event.preventDefault(e);
        } else {
            copied = true;
            text.value = data;
            text.select();
            setTimeout(function(){
                copied = false;
                resetValue();
                resetSelection();
                isCut ? host.onCut() : host.onCopy();
            });
        }
    };

    var onCut = function(e) {
        doCopy(e, true);
    };

    var onCopy = function(e) {
        doCopy(e, false);
    };

    var onPaste = function(e) {
        var data = handleClipboardData(e);
        if (typeof data == "string") {
            if (data)
                host.onPaste(data, e);
            if (useragent.isIE)
                setTimeout(resetSelection);
            event.preventDefault(e);
        }
        else {
            text.value = "";
            pasted = true;
        }
    };

    event.addCommandKeyListener(text, host.onCommandKey.bind(host));

    event.addListener(text, "select", onSelect);

    event.addListener(text, "input", onInput);

    event.addListener(text, "cut", onCut);
    event.addListener(text, "copy", onCopy);
    event.addListener(text, "paste", onPaste);
    var onCompositionStart = function(e) {
        if (inComposition || !host.onCompositionStart || host.$readOnly)
            return;
        inComposition = {};
        inComposition.canUndo = host.session.$undoManager;
        host.onCompositionStart();
        setTimeout(onCompositionUpdate, 0);
        host.on("mousedown", onCompositionEnd);
        if (inComposition.canUndo && !host.selection.isEmpty()) {
            host.insert("");
            host.session.markUndoGroup();
            host.selection.clearSelection();
        }
        host.session.markUndoGroup();
    };

    var onCompositionUpdate = function() {
        if (!inComposition || !host.onCompositionUpdate || host.$readOnly)
            return;
        var val = text.value.replace(/\x01/g, "");
        if (inComposition.lastValue === val) return;

        host.onCompositionUpdate(val);
        if (inComposition.lastValue)
            host.undo();
        if (inComposition.canUndo)
            inComposition.lastValue = val;
        if (inComposition.lastValue) {
            var r = host.selection.getRange();
            host.insert(inComposition.lastValue);
            host.session.markUndoGroup();
            inComposition.range = host.selection.getRange();
            host.selection.setRange(r);
            host.selection.clearSelection();
        }
    };

    var onCompositionEnd = function(e) {
        if (!host.onCompositionEnd || host.$readOnly) return;
        var c = inComposition;
        inComposition = false;
        var timer = setTimeout(function() {
            timer = null;
            var str = text.value.replace(/\x01/g, "");
            if (inComposition)
                return;
            else if (str == c.lastValue)
                resetValue();
            else if (!c.lastValue && str) {
                resetValue();
                sendText(str);
            }
        });
        inputHandler = function compositionInputHandler(str) {
            if (timer)
                clearTimeout(timer);
            str = str.replace(/\x01/g, "");
            if (str == c.lastValue)
                return "";
            if (c.lastValue && timer)
                host.undo();
            return str;
        };
        host.onCompositionEnd();
        host.removeListener("mousedown", onCompositionEnd);
        if (e.type == "compositionend" && c.range) {
            host.selection.setRange(c.range);
        }
        var needsOnInput =
            (!!useragent.isChrome && useragent.isChrome >= 53) ||
            (!!useragent.isWebKit && useragent.isWebKit >= 603);

        if (needsOnInput) {
          onInput();
        }
    };



    var syncComposition = lang.delayedCall(onCompositionUpdate, 50);

    event.addListener(text, "compositionstart", onCompositionStart);
    if (useragent.isGecko) {
        event.addListener(text, "text", function(){syncComposition.schedule();});
    } else {
        event.addListener(text, "keyup", function(){syncComposition.schedule();});
        event.addListener(text, "keydown", function(){syncComposition.schedule();});
    }
    event.addListener(text, "compositionend", onCompositionEnd);

    this.getElement = function() {
        return text;
    };

    this.setReadOnly = function(readOnly) {
       text.readOnly = readOnly;
    };

    this.onContextMenu = function(e) {
        afterContextMenu = true;
        resetSelection(host.selection.isEmpty());
        host._emit("nativecontextmenu", {target: host, domEvent: e});
        this.moveToMouse(e, true);
    };

    this.moveToMouse = function(e, bringToFront) {
        if (!tempStyle)
            tempStyle = text.style.cssText;
        text.style.cssText = (bringToFront ? "z-index:100000;" : "")
            + "height:" + text.style.height + ";"
            + (useragent.isIE ? "opacity:0.1;" : "");

        var rect = host.container.getBoundingClientRect();
        var style = dom.computedStyle(host.container);
        var top = rect.top + (parseInt(style.borderTopWidth) || 0);
        var left = rect.left + (parseInt(rect.borderLeftWidth) || 0);
        var maxTop = rect.bottom - top - text.clientHeight -2;
        var move = function(e) {
            text.style.left = e.clientX - left - 2 + "px";
            text.style.top = Math.min(e.clientY - top - 2, maxTop) + "px";
        };
        move(e);

        if (e.type != "mousedown")
            return;

        if (host.renderer.$keepTextAreaAtCursor)
            host.renderer.$keepTextAreaAtCursor = null;

        clearTimeout(closeTimeout);
        if (useragent.isWin)
            event.capture(host.container, move, onContextMenuClose);
    };

    this.onContextMenuClose = onContextMenuClose;
    var closeTimeout;
    function onContextMenuClose() {
        clearTimeout(closeTimeout);
        closeTimeout = setTimeout(function () {
            if (tempStyle) {
                text.style.cssText = tempStyle;
                tempStyle = '';
            }
            if (host.renderer.$keepTextAreaAtCursor == null) {
                host.renderer.$keepTextAreaAtCursor = true;
                host.renderer.$moveTextAreaToCursor();
            }
        }, 0);
    }

    var onContextMenu = function(e) {
        host.textInput.onContextMenu(e);
        onContextMenuClose();
    };
    event.addListener(text, "mouseup", onContextMenu);
    event.addListener(text, "mousedown", function(e) {
        e.preventDefault();
        onContextMenuClose();
    });
    event.addListener(host.renderer.scroller, "contextmenu", onContextMenu);
    event.addListener(text, "contextmenu", onContextMenu);

    if (useragent.isIOS) {
        var typingResetTimeout = null;
        var typing = false;

        parentNode.addEventListener("keydown", function (e) {
            if (typingResetTimeout) clearTimeout(typingResetTimeout);
            typing = true;
        });

        parentNode.addEventListener("keyup", function (e) {
            typingResetTimeout = setTimeout(function () {
                typing = false;
            }, 100);
        });
        var detectArrowKeys = function(e) {
            if (document.activeElement !== text) return;
            if (typing) return;

            if (cut) {
                return setTimeout(function () {
                    cut = false;
                }, 100);
            }
            var selectionStart = text.selectionStart;
            var selectionEnd = text.selectionEnd;
            text.setSelectionRange(4, 5);
            if (selectionStart == selectionEnd) {
                switch (selectionStart) {
                    case 0: host.onCommandKey(null, 0, KEYS.up); break;
                    case 1: host.onCommandKey(null, 0, KEYS.home); break;
                    case 2: host.onCommandKey(null, MODS.option, KEYS.left); break;
                    case 4: host.onCommandKey(null, 0, KEYS.left); break;
                    case 5: host.onCommandKey(null, 0, KEYS.right); break;
                    case 7: host.onCommandKey(null, MODS.option, KEYS.right); break;
                    case 8: host.onCommandKey(null, 0, KEYS.end); break;
                    case 9: host.onCommandKey(null, 0, KEYS.down); break;
                }
            } else {
                switch (selectionEnd) {
                    case 6: host.onCommandKey(null, MODS.shift, KEYS.right); break;
                    case 7: host.onCommandKey(null, MODS.shift | MODS.option, KEYS.right); break;
                    case 8: host.onCommandKey(null, MODS.shift, KEYS.end); break;
                    case 9: host.onCommandKey(null, MODS.shift, KEYS.down); break;
                }
                switch (selectionStart) {
                    case 0: host.onCommandKey(null, MODS.shift, KEYS.up); break;
                    case 1: host.onCommandKey(null, MODS.shift, KEYS.home); break;
                    case 2: host.onCommandKey(null, MODS.shift | MODS.option, KEYS.left); break;
                    case 3: host.onCommandKey(null, MODS.shift, KEYS.left); break;
                }
            }
        };
        document.addEventListener("selectionchange", detectArrowKeys);
        host.on("destroy", function() {
            document.removeEventListener("selectionchange", detectArrowKeys);
        });
    }
};

exports.TextInput = TextInput;
});

ace.define("ace/keyboard/textinput",["require","exports","module","ace/lib/event","ace/lib/useragent","ace/lib/dom","ace/lib/lang","ace/keyboard/textinput_ios"], function(acequire, exports, module) {
"use strict";

var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");
var dom = acequire("../lib/dom");
var lang = acequire("../lib/lang");
var BROKEN_SETDATA = useragent.isChrome < 18;
var USE_IE_MIME_TYPE =  useragent.isIE;

var TextInputIOS = acequire("./textinput_ios").TextInput;
var TextInput = function(parentNode, host) {
    if (useragent.isIOS)
        return TextInputIOS.call(this, parentNode, host);

    var text = dom.createElement("textarea");
    text.className = "ace_text-input";

    text.setAttribute("wrap", "off");
    text.setAttribute("autocorrect", "off");
    text.setAttribute("autocapitalize", "off");
    text.setAttribute("spellcheck", false);

    text.style.opacity = "0";
    parentNode.insertBefore(text, parentNode.firstChild);

    var PLACEHOLDER = "\u2028\u2028";

    var copied = false;
    var pasted = false;
    var inComposition = false;
    var tempStyle = '';
    var isSelectionEmpty = true;
    try { var isFocused = document.activeElement === text; } catch(e) {}
    
    event.addListener(text, "blur", function(e) {
        host.onBlur(e);
        isFocused = false;
    });
    event.addListener(text, "focus", function(e) {
        isFocused = true;
        host.onFocus(e);
        resetSelection();
    });
    this.focus = function() {
        if (tempStyle) return text.focus();
        var top = text.style.top;
        text.style.position = "fixed";
        text.style.top = "0px";
        text.focus();
        setTimeout(function() {
            text.style.position = "";
            if (text.style.top == "0px")
                text.style.top = top;
        }, 0);
    };
    this.blur = function() {
        text.blur();
    };
    this.isFocused = function() {
        return isFocused;
    };
    var syncSelection = lang.delayedCall(function() {
        isFocused && resetSelection(isSelectionEmpty);
    });
    var syncValue = lang.delayedCall(function() {
         if (!inComposition) {
            text.value = PLACEHOLDER;
            isFocused && resetSelection();
         }
    });

    function resetSelection(isEmpty) {
        if (inComposition)
            return;
        inComposition = true;
        
        if (inputHandler) {
            var selectionStart = 0;
            var selectionEnd = isEmpty ? 0 : text.value.length - 1;
        } else {
            var selectionStart = isEmpty ? 2 : 1;
            var selectionEnd = 2;
        }
        try {
            text.setSelectionRange(selectionStart, selectionEnd);
        } catch(e){}
        
        inComposition = false;
    }

    function resetValue() {
        if (inComposition)
            return;
        text.value = PLACEHOLDER;
        if (useragent.isWebKit)
            syncValue.schedule();
    }

    useragent.isWebKit || host.addEventListener('changeSelection', function() {
        if (host.selection.isEmpty() != isSelectionEmpty) {
            isSelectionEmpty = !isSelectionEmpty;
            syncSelection.schedule();
        }
    });

    resetValue();
    if (isFocused)
        host.onFocus();


    var isAllSelected = function(text) {
        return text.selectionStart === 0 && text.selectionEnd === text.value.length;
    };

    var onSelect = function(e) {
        if (copied) {
            copied = false;
        } else if (isAllSelected(text)) {
            host.selectAll();
            resetSelection();
        } else if (inputHandler) {
            resetSelection(host.selection.isEmpty());
        }
    };

    var inputHandler = null;
    this.setInputHandler = function(cb) {inputHandler = cb;};
    this.getInputHandler = function() {return inputHandler;};
    var afterContextMenu = false;
    
    var sendText = function(data) {
        if (inputHandler) {
            data = inputHandler(data);
            inputHandler = null;
        }
        if (pasted) {
            resetSelection();
            if (data)
                host.onPaste(data);
            pasted = false;
        } else if (data == PLACEHOLDER.charAt(0)) {
            if (afterContextMenu)
                host.execCommand("del", {source: "ace"});
            else // some versions of android do not fire keydown when pressing backspace
                host.execCommand("backspace", {source: "ace"});
        } else {
            if (data.substring(0, 2) == PLACEHOLDER)
                data = data.substr(2);
            else if (data.charAt(0) == PLACEHOLDER.charAt(0))
                data = data.substr(1);
            else if (data.charAt(data.length - 1) == PLACEHOLDER.charAt(0))
                data = data.slice(0, -1);
            if (data.charAt(data.length - 1) == PLACEHOLDER.charAt(0))
                data = data.slice(0, -1);
            
            if (data)
                host.onTextInput(data);
        }
        if (afterContextMenu)
            afterContextMenu = false;
    };
    var onInput = function(e) {
        if (inComposition)
            return;
        var data = text.value;
        sendText(data);
        resetValue();
    };
    
    var handleClipboardData = function(e, data, forceIEMime) {
        var clipboardData = e.clipboardData || window.clipboardData;
        if (!clipboardData || BROKEN_SETDATA)
            return;
        var mime = USE_IE_MIME_TYPE || forceIEMime ? "Text" : "text/plain";
        try {
            if (data) {
                return clipboardData.setData(mime, data) !== false;
            } else {
                return clipboardData.getData(mime);
            }
        } catch(e) {
            if (!forceIEMime)
                return handleClipboardData(e, data, true);
        }
    };

    var doCopy = function(e, isCut) {
        var data = host.getCopyText();
        if (!data)
            return event.preventDefault(e);

        if (handleClipboardData(e, data)) {
            isCut ? host.onCut() : host.onCopy();
            event.preventDefault(e);
        } else {
            copied = true;
            text.value = data;
            text.select();
            setTimeout(function(){
                copied = false;
                resetValue();
                resetSelection();
                isCut ? host.onCut() : host.onCopy();
            });
        }
    };
    
    var onCut = function(e) {
        doCopy(e, true);
    };
    
    var onCopy = function(e) {
        doCopy(e, false);
    };
    
    var onPaste = function(e) {
        var data = handleClipboardData(e);
        if (typeof data == "string") {
            if (data)
                host.onPaste(data, e);
            if (useragent.isIE)
                setTimeout(resetSelection);
            event.preventDefault(e);
        }
        else {
            text.value = "";
            pasted = true;
        }
    };

    event.addCommandKeyListener(text, host.onCommandKey.bind(host));

    event.addListener(text, "select", onSelect);

    event.addListener(text, "input", onInput);

    event.addListener(text, "cut", onCut);
    event.addListener(text, "copy", onCopy);
    event.addListener(text, "paste", onPaste);
    if (!('oncut' in text) || !('oncopy' in text) || !('onpaste' in text)) {
        event.addListener(parentNode, "keydown", function(e) {
            if ((useragent.isMac && !e.metaKey) || !e.ctrlKey)
                return;

            switch (e.keyCode) {
                case 67:
                    onCopy(e);
                    break;
                case 86:
                    onPaste(e);
                    break;
                case 88:
                    onCut(e);
                    break;
            }
        });
    }
    var onCompositionStart = function(e) {
        if (inComposition || !host.onCompositionStart || host.$readOnly) 
            return;
        inComposition = {};
        inComposition.canUndo = host.session.$undoManager;
        host.onCompositionStart();
        setTimeout(onCompositionUpdate, 0);
        host.on("mousedown", onCompositionEnd);
        if (inComposition.canUndo && !host.selection.isEmpty()) {
            host.insert("");
            host.session.markUndoGroup();
            host.selection.clearSelection();
        }
        host.session.markUndoGroup();
    };

    var onCompositionUpdate = function() {
        if (!inComposition || !host.onCompositionUpdate || host.$readOnly)
            return;
        var val = text.value.replace(/\u2028/g, "");
        if (inComposition.lastValue === val) return;
        
        host.onCompositionUpdate(val);
        if (inComposition.lastValue)
            host.undo();
        if (inComposition.canUndo)
            inComposition.lastValue = val;
        if (inComposition.lastValue) {
            var r = host.selection.getRange();
            host.insert(inComposition.lastValue);
            host.session.markUndoGroup();
            inComposition.range = host.selection.getRange();
            host.selection.setRange(r);
            host.selection.clearSelection();
        }
    };

    var onCompositionEnd = function(e) {
        if (!host.onCompositionEnd || host.$readOnly) return;
        var c = inComposition;
        inComposition = false;
        var timer = setTimeout(function() {
            timer = null;
            var str = text.value.replace(/\u2028/g, "");
            if (inComposition)
                return;
            else if (str == c.lastValue)
                resetValue();
            else if (!c.lastValue && str) {
                resetValue();
                sendText(str);
            }
        });
        inputHandler = function compositionInputHandler(str) {
            if (timer)
                clearTimeout(timer);
            str = str.replace(/\u2028/g, "");
            if (str == c.lastValue)
                return "";
            if (c.lastValue && timer)
                host.undo();
            return str;
        };
        host.onCompositionEnd();
        host.removeListener("mousedown", onCompositionEnd);
        if (e.type == "compositionend" && c.range) {
            host.selection.setRange(c.range);
        }
        var needsOnInput =
            (!!useragent.isChrome && useragent.isChrome >= 53) ||
            (!!useragent.isWebKit && useragent.isWebKit >= 603);

        if (needsOnInput) {
          onInput();
        }
    };
    
    

    var syncComposition = lang.delayedCall(onCompositionUpdate, 50);

    event.addListener(text, "compositionstart", onCompositionStart);
    if (useragent.isGecko) {
        event.addListener(text, "text", function(){syncComposition.schedule();});
    } else {
        event.addListener(text, "keyup", function(){syncComposition.schedule();});
        event.addListener(text, "keydown", function(){syncComposition.schedule();});
    }
    event.addListener(text, "compositionend", onCompositionEnd);

    this.getElement = function() {
        return text;
    };

    this.setReadOnly = function(readOnly) {
       text.readOnly = readOnly;
    };

    this.onContextMenu = function(e) {
        afterContextMenu = true;
        resetSelection(host.selection.isEmpty());
        host._emit("nativecontextmenu", {target: host, domEvent: e});
        this.moveToMouse(e, true);
    };
    
    this.moveToMouse = function(e, bringToFront) {
        if (!tempStyle)
            tempStyle = text.style.cssText;
        text.style.cssText = (bringToFront ? "z-index:100000;" : "")
            + "height:" + text.style.height + ";"
            + (useragent.isIE ? "opacity:0.1;" : "");

        var rect = host.container.getBoundingClientRect();
        var style = dom.computedStyle(host.container);
        var top = rect.top + (parseInt(style.borderTopWidth) || 0);
        var left = rect.left + (parseInt(rect.borderLeftWidth) || 0);
        var maxTop = rect.bottom - top - text.clientHeight -2;
        var move = function(e) {
            text.style.left = e.clientX - left - 2 + "px";
            text.style.top = Math.min(e.clientY - top - 2, maxTop) + "px";
        }; 
        move(e);

        if (e.type != "mousedown")
            return;

        if (host.renderer.$keepTextAreaAtCursor)
            host.renderer.$keepTextAreaAtCursor = null;

        clearTimeout(closeTimeout);
        if (useragent.isWin)
            event.capture(host.container, move, onContextMenuClose);
    };

    this.onContextMenuClose = onContextMenuClose;
    var closeTimeout;
    function onContextMenuClose() {
        clearTimeout(closeTimeout);
        closeTimeout = setTimeout(function () {
            if (tempStyle) {
                text.style.cssText = tempStyle;
                tempStyle = '';
            }
            if (host.renderer.$keepTextAreaAtCursor == null) {
                host.renderer.$keepTextAreaAtCursor = true;
                host.renderer.$moveTextAreaToCursor();
            }
        }, 0);
    }

    var onContextMenu = function(e) {
        host.textInput.onContextMenu(e);
        onContextMenuClose();
    };
    event.addListener(text, "mouseup", onContextMenu);
    event.addListener(text, "mousedown", function(e) {
        e.preventDefault();
        onContextMenuClose();
    });
    event.addListener(host.renderer.scroller, "contextmenu", onContextMenu);
    event.addListener(text, "contextmenu", onContextMenu);
};

exports.TextInput = TextInput;
});

ace.define("ace/mouse/default_handlers",["require","exports","module","ace/lib/dom","ace/lib/event","ace/lib/useragent"], function(acequire, exports, module) {
"use strict";

var dom = acequire("../lib/dom");
var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");

var DRAG_OFFSET = 0; // pixels
var SCROLL_COOLDOWN_T = 250; // milliseconds

function DefaultHandlers(mouseHandler) {
    mouseHandler.$clickSelection = null;

    var editor = mouseHandler.editor;
    editor.setDefaultHandler("mousedown", this.onMouseDown.bind(mouseHandler));
    editor.setDefaultHandler("dblclick", this.onDoubleClick.bind(mouseHandler));
    editor.setDefaultHandler("tripleclick", this.onTripleClick.bind(mouseHandler));
    editor.setDefaultHandler("quadclick", this.onQuadClick.bind(mouseHandler));
    editor.setDefaultHandler("mousewheel", this.onMouseWheel.bind(mouseHandler));
    editor.setDefaultHandler("touchmove", this.onTouchMove.bind(mouseHandler));

    var exports = ["select", "startSelect", "selectEnd", "selectAllEnd", "selectByWordsEnd",
        "selectByLinesEnd", "dragWait", "dragWaitEnd", "focusWait"];

    exports.forEach(function(x) {
        mouseHandler[x] = this[x];
    }, this);

    mouseHandler.selectByLines = this.extendSelectionBy.bind(mouseHandler, "getLineRange");
    mouseHandler.selectByWords = this.extendSelectionBy.bind(mouseHandler, "getWordRange");
}

(function() {

    this.onMouseDown = function(ev) {
        var inSelection = ev.inSelection();
        var pos = ev.getDocumentPosition();
        this.mousedownEvent = ev;
        var editor = this.editor;

        var button = ev.getButton();
        if (button !== 0) {
            var selectionRange = editor.getSelectionRange();
            var selectionEmpty = selectionRange.isEmpty();
            editor.$blockScrolling++;
            if (selectionEmpty || button == 1)
                editor.selection.moveToPosition(pos);
            editor.$blockScrolling--;
            if (button == 2) {
                editor.textInput.onContextMenu(ev.domEvent);
                if (!useragent.isMozilla)
                    ev.preventDefault();
            }
            return;
        }

        this.mousedownEvent.time = Date.now();
        if (inSelection && !editor.isFocused()) {
            editor.focus();
            if (this.$focusTimout && !this.$clickSelection && !editor.inMultiSelectMode) {
                this.setState("focusWait");
                this.captureMouse(ev);
                return;
            }
        }

        this.captureMouse(ev);
        this.startSelect(pos, ev.domEvent._clicks > 1);
        return ev.preventDefault();
    };

    this.startSelect = function(pos, waitForClickSelection) {
        pos = pos || this.editor.renderer.screenToTextCoordinates(this.x, this.y);
        var editor = this.editor;
        editor.$blockScrolling++;
        if (this.mousedownEvent.getShiftKey())
            editor.selection.selectToPosition(pos);
        else if (!waitForClickSelection)
            editor.selection.moveToPosition(pos);
        if (!waitForClickSelection)
            this.select();
        if (editor.renderer.scroller.setCapture) {
            editor.renderer.scroller.setCapture();
        }
        editor.setStyle("ace_selecting");
        this.setState("select");
        editor.$blockScrolling--;
    };

    this.select = function() {
        var anchor, editor = this.editor;
        var cursor = editor.renderer.screenToTextCoordinates(this.x, this.y);
        editor.$blockScrolling++;
        if (this.$clickSelection) {
            var cmp = this.$clickSelection.comparePoint(cursor);

            if (cmp == -1) {
                anchor = this.$clickSelection.end;
            } else if (cmp == 1) {
                anchor = this.$clickSelection.start;
            } else {
                var orientedRange = calcRangeOrientation(this.$clickSelection, cursor);
                cursor = orientedRange.cursor;
                anchor = orientedRange.anchor;
            }
            editor.selection.setSelectionAnchor(anchor.row, anchor.column);
        }
        editor.selection.selectToPosition(cursor);
        editor.$blockScrolling--;
        editor.renderer.scrollCursorIntoView();
    };

    this.extendSelectionBy = function(unitName) {
        var anchor, editor = this.editor;
        var cursor = editor.renderer.screenToTextCoordinates(this.x, this.y);
        var range = editor.selection[unitName](cursor.row, cursor.column);
        editor.$blockScrolling++;
        if (this.$clickSelection) {
            var cmpStart = this.$clickSelection.comparePoint(range.start);
            var cmpEnd = this.$clickSelection.comparePoint(range.end);

            if (cmpStart == -1 && cmpEnd <= 0) {
                anchor = this.$clickSelection.end;
                if (range.end.row != cursor.row || range.end.column != cursor.column)
                    cursor = range.start;
            } else if (cmpEnd == 1 && cmpStart >= 0) {
                anchor = this.$clickSelection.start;
                if (range.start.row != cursor.row || range.start.column != cursor.column)
                    cursor = range.end;
            } else if (cmpStart == -1 && cmpEnd == 1) {
                cursor = range.end;
                anchor = range.start;
            } else {
                var orientedRange = calcRangeOrientation(this.$clickSelection, cursor);
                cursor = orientedRange.cursor;
                anchor = orientedRange.anchor;
            }
            editor.selection.setSelectionAnchor(anchor.row, anchor.column);
        }
        editor.selection.selectToPosition(cursor);
        editor.$blockScrolling--;
        editor.renderer.scrollCursorIntoView();
    };

    this.selectEnd =
    this.selectAllEnd =
    this.selectByWordsEnd =
    this.selectByLinesEnd = function() {
        this.$clickSelection = null;
        this.editor.unsetStyle("ace_selecting");
        if (this.editor.renderer.scroller.releaseCapture) {
            this.editor.renderer.scroller.releaseCapture();
        }
    };

    this.focusWait = function() {
        var distance = calcDistance(this.mousedownEvent.x, this.mousedownEvent.y, this.x, this.y);
        var time = Date.now();

        if (distance > DRAG_OFFSET || time - this.mousedownEvent.time > this.$focusTimout)
            this.startSelect(this.mousedownEvent.getDocumentPosition());
    };

    this.onDoubleClick = function(ev) {
        var pos = ev.getDocumentPosition();
        var editor = this.editor;
        var session = editor.session;

        var range = session.getBracketRange(pos);
        if (range) {
            if (range.isEmpty()) {
                range.start.column--;
                range.end.column++;
            }
            this.setState("select");
        } else {
            range = editor.selection.getWordRange(pos.row, pos.column);
            this.setState("selectByWords");
        }
        this.$clickSelection = range;
        this.select();
    };

    this.onTripleClick = function(ev) {
        var pos = ev.getDocumentPosition();
        var editor = this.editor;

        this.setState("selectByLines");
        var range = editor.getSelectionRange();
        if (range.isMultiLine() && range.contains(pos.row, pos.column)) {
            this.$clickSelection = editor.selection.getLineRange(range.start.row);
            this.$clickSelection.end = editor.selection.getLineRange(range.end.row).end;
        } else {
            this.$clickSelection = editor.selection.getLineRange(pos.row);
        }
        this.select();
    };

    this.onQuadClick = function(ev) {
        var editor = this.editor;

        editor.selectAll();
        this.$clickSelection = editor.getSelectionRange();
        this.setState("selectAll");
    };

    this.onMouseWheel = function(ev) {
        if (ev.getAccelKey())
            return;
        if (ev.getShiftKey() && ev.wheelY && !ev.wheelX) {
            ev.wheelX = ev.wheelY;
            ev.wheelY = 0;
        }
        
        var editor = this.editor;

        if (!this.$lastScroll)
            this.$lastScroll = { t: 0, vx: 0, vy: 0, allowed: 0 };

        var prevScroll = this.$lastScroll;
        var t = ev.domEvent.timeStamp;
        var dt = t - prevScroll.t;
        var vx = ev.wheelX / dt;
        var vy = ev.wheelY / dt;
        if (dt < SCROLL_COOLDOWN_T) {
            vx = (vx + prevScroll.vx) / 2;
            vy = (vy + prevScroll.vy) / 2;
        }

        var direction = Math.abs(vx / vy);

        var canScroll = false;
        if (direction >= 1 && editor.renderer.isScrollableBy(ev.wheelX * ev.speed, 0))
            canScroll = true;
        if (direction <= 1 && editor.renderer.isScrollableBy(0, ev.wheelY * ev.speed))
            canScroll = true;

        if (canScroll) {
            prevScroll.allowed = t;
        } else if (t - prevScroll.allowed < SCROLL_COOLDOWN_T) {
            var isSlower = Math.abs(vx) <= 1.1 * Math.abs(prevScroll.vx)
                && Math.abs(vy) <= 1.1 * Math.abs(prevScroll.vy);
            if (isSlower) {
                canScroll = true;
                prevScroll.allowed = t;
            }
            else {
                prevScroll.allowed = 0;
            }
        }

        prevScroll.t = t;
        prevScroll.vx = vx;
        prevScroll.vy = vy;

        if (canScroll) {
            editor.renderer.scrollBy(ev.wheelX * ev.speed, ev.wheelY * ev.speed);
            return ev.stop();
        }
    };

    this.onTouchMove = function(ev) {
        this.editor._emit("mousewheel", ev);
    };

}).call(DefaultHandlers.prototype);

exports.DefaultHandlers = DefaultHandlers;

function calcDistance(ax, ay, bx, by) {
    return Math.sqrt(Math.pow(bx - ax, 2) + Math.pow(by - ay, 2));
}

function calcRangeOrientation(range, cursor) {
    if (range.start.row == range.end.row)
        var cmp = 2 * cursor.column - range.start.column - range.end.column;
    else if (range.start.row == range.end.row - 1 && !range.start.column && !range.end.column)
        var cmp = cursor.column - 4;
    else
        var cmp = 2 * cursor.row - range.start.row - range.end.row;

    if (cmp < 0)
        return {cursor: range.start, anchor: range.end};
    else
        return {cursor: range.end, anchor: range.start};
}

});

ace.define("ace/tooltip",["require","exports","module","ace/lib/oop","ace/lib/dom"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var dom = acequire("./lib/dom");
function Tooltip (parentNode) {
    this.isOpen = false;
    this.$element = null;
    this.$parentNode = parentNode;
}

(function() {
    this.$init = function() {
        this.$element = dom.createElement("div");
        this.$element.className = "ace_tooltip";
        this.$element.style.display = "none";
        this.$parentNode.appendChild(this.$element);
        return this.$element;
    };
    this.getElement = function() {
        return this.$element || this.$init();
    };
    this.setText = function(text) {
        dom.setInnerText(this.getElement(), text);
    };
    this.setHtml = function(html) {
        this.getElement().innerHTML = html;
    };
    this.setPosition = function(x, y) {
        this.getElement().style.left = x + "px";
        this.getElement().style.top = y + "px";
    };
    this.setClassName = function(className) {
        dom.addCssClass(this.getElement(), className);
    };
    this.show = function(text, x, y) {
        if (text != null)
            this.setText(text);
        if (x != null && y != null)
            this.setPosition(x, y);
        if (!this.isOpen) {
            this.getElement().style.display = "block";
            this.isOpen = true;
        }
    };

    this.hide = function() {
        if (this.isOpen) {
            this.getElement().style.display = "none";
            this.isOpen = false;
        }
    };
    this.getHeight = function() {
        return this.getElement().offsetHeight;
    };
    this.getWidth = function() {
        return this.getElement().offsetWidth;
    };

    this.destroy = function() {
        this.isOpen = false;
        if (this.$element && this.$element.parentNode) {
            this.$element.parentNode.removeChild(this.$element);
        }
    };

}).call(Tooltip.prototype);

exports.Tooltip = Tooltip;
});

ace.define("ace/mouse/default_gutter_handler",["require","exports","module","ace/lib/dom","ace/lib/oop","ace/lib/event","ace/tooltip"], function(acequire, exports, module) {
"use strict";
var dom = acequire("../lib/dom");
var oop = acequire("../lib/oop");
var event = acequire("../lib/event");
var Tooltip = acequire("../tooltip").Tooltip;

function GutterHandler(mouseHandler) {
    var editor = mouseHandler.editor;
    var gutter = editor.renderer.$gutterLayer;
    var tooltip = new GutterTooltip(editor.container);

    mouseHandler.editor.setDefaultHandler("guttermousedown", function(e) {
        if (!editor.isFocused() || e.getButton() != 0)
            return;
        var gutterRegion = gutter.getRegion(e);

        if (gutterRegion == "foldWidgets")
            return;

        var row = e.getDocumentPosition().row;
        var selection = editor.session.selection;

        if (e.getShiftKey())
            selection.selectTo(row, 0);
        else {
            if (e.domEvent.detail == 2) {
                editor.selectAll();
                return e.preventDefault();
            }
            mouseHandler.$clickSelection = editor.selection.getLineRange(row);
        }
        mouseHandler.setState("selectByLines");
        mouseHandler.captureMouse(e);
        return e.preventDefault();
    });


    var tooltipTimeout, mouseEvent, tooltipAnnotation;

    function showTooltip() {
        var row = mouseEvent.getDocumentPosition().row;
        var annotation = gutter.$annotations[row];
        if (!annotation)
            return hideTooltip();

        var maxRow = editor.session.getLength();
        if (row == maxRow) {
            var screenRow = editor.renderer.pixelToScreenCoordinates(0, mouseEvent.y).row;
            var pos = mouseEvent.$pos;
            if (screenRow > editor.session.documentToScreenRow(pos.row, pos.column))
                return hideTooltip();
        }

        if (tooltipAnnotation == annotation)
            return;
        tooltipAnnotation = annotation.text.join("<br/>");

        tooltip.setHtml(tooltipAnnotation);
        tooltip.show();
        editor._signal("showGutterTooltip", tooltip);
        editor.on("mousewheel", hideTooltip);

        if (mouseHandler.$tooltipFollowsMouse) {
            moveTooltip(mouseEvent);
        } else {
            var gutterElement = mouseEvent.domEvent.target;
            var rect = gutterElement.getBoundingClientRect();
            var style = tooltip.getElement().style;
            style.left = rect.right + "px";
            style.top = rect.bottom + "px";
        }
    }

    function hideTooltip() {
        if (tooltipTimeout)
            tooltipTimeout = clearTimeout(tooltipTimeout);
        if (tooltipAnnotation) {
            tooltip.hide();
            tooltipAnnotation = null;
            editor._signal("hideGutterTooltip", tooltip);
            editor.removeEventListener("mousewheel", hideTooltip);
        }
    }

    function moveTooltip(e) {
        tooltip.setPosition(e.x, e.y);
    }

    mouseHandler.editor.setDefaultHandler("guttermousemove", function(e) {
        var target = e.domEvent.target || e.domEvent.srcElement;
        if (dom.hasCssClass(target, "ace_fold-widget"))
            return hideTooltip();

        if (tooltipAnnotation && mouseHandler.$tooltipFollowsMouse)
            moveTooltip(e);

        mouseEvent = e;
        if (tooltipTimeout)
            return;
        tooltipTimeout = setTimeout(function() {
            tooltipTimeout = null;
            if (mouseEvent && !mouseHandler.isMousePressed)
                showTooltip();
            else
                hideTooltip();
        }, 50);
    });

    event.addListener(editor.renderer.$gutter, "mouseout", function(e) {
        mouseEvent = null;
        if (!tooltipAnnotation || tooltipTimeout)
            return;

        tooltipTimeout = setTimeout(function() {
            tooltipTimeout = null;
            hideTooltip();
        }, 50);
    });
    
    editor.on("changeSession", hideTooltip);
}

function GutterTooltip(parentNode) {
    Tooltip.call(this, parentNode);
}

oop.inherits(GutterTooltip, Tooltip);

(function(){
    this.setPosition = function(x, y) {
        var windowWidth = window.innerWidth || document.documentElement.clientWidth;
        var windowHeight = window.innerHeight || document.documentElement.clientHeight;
        var width = this.getWidth();
        var height = this.getHeight();
        x += 15;
        y += 15;
        if (x + width > windowWidth) {
            x -= (x + width) - windowWidth;
        }
        if (y + height > windowHeight) {
            y -= 20 + height;
        }
        Tooltip.prototype.setPosition.call(this, x, y);
    };

}).call(GutterTooltip.prototype);



exports.GutterHandler = GutterHandler;

});

ace.define("ace/mouse/mouse_event",["require","exports","module","ace/lib/event","ace/lib/useragent"], function(acequire, exports, module) {
"use strict";

var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");
var MouseEvent = exports.MouseEvent = function(domEvent, editor) {
    this.domEvent = domEvent;
    this.editor = editor;
    
    this.x = this.clientX = domEvent.clientX;
    this.y = this.clientY = domEvent.clientY;

    this.$pos = null;
    this.$inSelection = null;
    
    this.propagationStopped = false;
    this.defaultPrevented = false;
};

(function() {  
    
    this.stopPropagation = function() {
        event.stopPropagation(this.domEvent);
        this.propagationStopped = true;
    };
    
    this.preventDefault = function() {
        event.preventDefault(this.domEvent);
        this.defaultPrevented = true;
    };
    
    this.stop = function() {
        this.stopPropagation();
        this.preventDefault();
    };
    this.getDocumentPosition = function() {
        if (this.$pos)
            return this.$pos;
        
        this.$pos = this.editor.renderer.screenToTextCoordinates(this.clientX, this.clientY);
        return this.$pos;
    };
    this.inSelection = function() {
        if (this.$inSelection !== null)
            return this.$inSelection;
            
        var editor = this.editor;
        

        var selectionRange = editor.getSelectionRange();
        if (selectionRange.isEmpty())
            this.$inSelection = false;
        else {
            var pos = this.getDocumentPosition();
            this.$inSelection = selectionRange.contains(pos.row, pos.column);
        }

        return this.$inSelection;
    };
    this.getButton = function() {
        return event.getButton(this.domEvent);
    };
    this.getShiftKey = function() {
        return this.domEvent.shiftKey;
    };
    
    this.getAccelKey = useragent.isMac
        ? function() { return this.domEvent.metaKey; }
        : function() { return this.domEvent.ctrlKey; };
    
}).call(MouseEvent.prototype);

});

ace.define("ace/mouse/dragdrop_handler",["require","exports","module","ace/lib/dom","ace/lib/event","ace/lib/useragent"], function(acequire, exports, module) {
"use strict";

var dom = acequire("../lib/dom");
var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");

var AUTOSCROLL_DELAY = 200;
var SCROLL_CURSOR_DELAY = 200;
var SCROLL_CURSOR_HYSTERESIS = 5;

function DragdropHandler(mouseHandler) {

    var editor = mouseHandler.editor;

    var blankImage = dom.createElement("img");
    blankImage.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
    if (useragent.isOpera)
        blankImage.style.cssText = "width:1px;height:1px;position:fixed;top:0;left:0;z-index:2147483647;opacity:0;";

    var exports = ["dragWait", "dragWaitEnd", "startDrag", "dragReadyEnd", "onMouseDrag"];

     exports.forEach(function(x) {
         mouseHandler[x] = this[x];
    }, this);
    editor.addEventListener("mousedown", this.onMouseDown.bind(mouseHandler));


    var mouseTarget = editor.container;
    var dragSelectionMarker, x, y;
    var timerId, range;
    var dragCursor, counter = 0;
    var dragOperation;
    var isInternal;
    var autoScrollStartTime;
    var cursorMovedTime;
    var cursorPointOnCaretMoved;

    this.onDragStart = function(e) {
        if (this.cancelDrag || !mouseTarget.draggable) {
            var self = this;
            setTimeout(function(){
                self.startSelect();
                self.captureMouse(e);
            }, 0);
            return e.preventDefault();
        }
        range = editor.getSelectionRange();

        var dataTransfer = e.dataTransfer;
        dataTransfer.effectAllowed = editor.getReadOnly() ? "copy" : "copyMove";
        if (useragent.isOpera) {
            editor.container.appendChild(blankImage);
            blankImage.scrollTop = 0;
        }
        dataTransfer.setDragImage && dataTransfer.setDragImage(blankImage, 0, 0);
        if (useragent.isOpera) {
            editor.container.removeChild(blankImage);
        }
        dataTransfer.clearData();
        dataTransfer.setData("Text", editor.session.getTextRange());

        isInternal = true;
        this.setState("drag");
    };

    this.onDragEnd = function(e) {
        mouseTarget.draggable = false;
        isInternal = false;
        this.setState(null);
        if (!editor.getReadOnly()) {
            var dropEffect = e.dataTransfer.dropEffect;
            if (!dragOperation && dropEffect == "move")
                editor.session.remove(editor.getSelectionRange());
            editor.renderer.$cursorLayer.setBlinking(true);
        }
        this.editor.unsetStyle("ace_dragging");
        this.editor.renderer.setCursorStyle("");
    };

    this.onDragEnter = function(e) {
        if (editor.getReadOnly() || !canAccept(e.dataTransfer))
            return;
        x = e.clientX;
        y = e.clientY;
        if (!dragSelectionMarker)
            addDragMarker();
        counter++;
        e.dataTransfer.dropEffect = dragOperation = getDropEffect(e);
        return event.preventDefault(e);
    };

    this.onDragOver = function(e) {
        if (editor.getReadOnly() || !canAccept(e.dataTransfer))
            return;
        x = e.clientX;
        y = e.clientY;
        if (!dragSelectionMarker) {
            addDragMarker();
            counter++;
        }
        if (onMouseMoveTimer !== null)
            onMouseMoveTimer = null;

        e.dataTransfer.dropEffect = dragOperation = getDropEffect(e);
        return event.preventDefault(e);
    };

    this.onDragLeave = function(e) {
        counter--;
        if (counter <= 0 && dragSelectionMarker) {
            clearDragMarker();
            dragOperation = null;
            return event.preventDefault(e);
        }
    };

    this.onDrop = function(e) {
        if (!dragCursor)
            return;
        var dataTransfer = e.dataTransfer;
        if (isInternal) {
            switch (dragOperation) {
                case "move":
                    if (range.contains(dragCursor.row, dragCursor.column)) {
                        range = {
                            start: dragCursor,
                            end: dragCursor
                        };
                    } else {
                        range = editor.moveText(range, dragCursor);
                    }
                    break;
                case "copy":
                    range = editor.moveText(range, dragCursor, true);
                    break;
            }
        } else {
            var dropData = dataTransfer.getData('Text');
            range = {
                start: dragCursor,
                end: editor.session.insert(dragCursor, dropData)
            };
            editor.focus();
            dragOperation = null;
        }
        clearDragMarker();
        return event.preventDefault(e);
    };

    event.addListener(mouseTarget, "dragstart", this.onDragStart.bind(mouseHandler));
    event.addListener(mouseTarget, "dragend", this.onDragEnd.bind(mouseHandler));
    event.addListener(mouseTarget, "dragenter", this.onDragEnter.bind(mouseHandler));
    event.addListener(mouseTarget, "dragover", this.onDragOver.bind(mouseHandler));
    event.addListener(mouseTarget, "dragleave", this.onDragLeave.bind(mouseHandler));
    event.addListener(mouseTarget, "drop", this.onDrop.bind(mouseHandler));

    function scrollCursorIntoView(cursor, prevCursor) {
        var now = Date.now();
        var vMovement = !prevCursor || cursor.row != prevCursor.row;
        var hMovement = !prevCursor || cursor.column != prevCursor.column;
        if (!cursorMovedTime || vMovement || hMovement) {
            editor.$blockScrolling += 1;
            editor.moveCursorToPosition(cursor);
            editor.$blockScrolling -= 1;
            cursorMovedTime = now;
            cursorPointOnCaretMoved = {x: x, y: y};
        } else {
            var distance = calcDistance(cursorPointOnCaretMoved.x, cursorPointOnCaretMoved.y, x, y);
            if (distance > SCROLL_CURSOR_HYSTERESIS) {
                cursorMovedTime = null;
            } else if (now - cursorMovedTime >= SCROLL_CURSOR_DELAY) {
                editor.renderer.scrollCursorIntoView();
                cursorMovedTime = null;
            }
        }
    }

    function autoScroll(cursor, prevCursor) {
        var now = Date.now();
        var lineHeight = editor.renderer.layerConfig.lineHeight;
        var characterWidth = editor.renderer.layerConfig.characterWidth;
        var editorRect = editor.renderer.scroller.getBoundingClientRect();
        var offsets = {
           x: {
               left: x - editorRect.left,
               right: editorRect.right - x
           },
           y: {
               top: y - editorRect.top,
               bottom: editorRect.bottom - y
           }
        };
        var nearestXOffset = Math.min(offsets.x.left, offsets.x.right);
        var nearestYOffset = Math.min(offsets.y.top, offsets.y.bottom);
        var scrollCursor = {row: cursor.row, column: cursor.column};
        if (nearestXOffset / characterWidth <= 2) {
            scrollCursor.column += (offsets.x.left < offsets.x.right ? -3 : +2);
        }
        if (nearestYOffset / lineHeight <= 1) {
            scrollCursor.row += (offsets.y.top < offsets.y.bottom ? -1 : +1);
        }
        var vScroll = cursor.row != scrollCursor.row;
        var hScroll = cursor.column != scrollCursor.column;
        var vMovement = !prevCursor || cursor.row != prevCursor.row;
        if (vScroll || (hScroll && !vMovement)) {
            if (!autoScrollStartTime)
                autoScrollStartTime = now;
            else if (now - autoScrollStartTime >= AUTOSCROLL_DELAY)
                editor.renderer.scrollCursorIntoView(scrollCursor);
        } else {
            autoScrollStartTime = null;
        }
    }

    function onDragInterval() {
        var prevCursor = dragCursor;
        dragCursor = editor.renderer.screenToTextCoordinates(x, y);
        scrollCursorIntoView(dragCursor, prevCursor);
        autoScroll(dragCursor, prevCursor);
    }

    function addDragMarker() {
        range = editor.selection.toOrientedRange();
        dragSelectionMarker = editor.session.addMarker(range, "ace_selection", editor.getSelectionStyle());
        editor.clearSelection();
        if (editor.isFocused())
            editor.renderer.$cursorLayer.setBlinking(false);
        clearInterval(timerId);
        onDragInterval();
        timerId = setInterval(onDragInterval, 20);
        counter = 0;
        event.addListener(document, "mousemove", onMouseMove);
    }

    function clearDragMarker() {
        clearInterval(timerId);
        editor.session.removeMarker(dragSelectionMarker);
        dragSelectionMarker = null;
        editor.$blockScrolling += 1;
        editor.selection.fromOrientedRange(range);
        editor.$blockScrolling -= 1;
        if (editor.isFocused() && !isInternal)
            editor.renderer.$cursorLayer.setBlinking(!editor.getReadOnly());
        range = null;
        dragCursor = null;
        counter = 0;
        autoScrollStartTime = null;
        cursorMovedTime = null;
        event.removeListener(document, "mousemove", onMouseMove);
    }
    var onMouseMoveTimer = null;
    function onMouseMove() {
        if (onMouseMoveTimer == null) {
            onMouseMoveTimer = setTimeout(function() {
                if (onMouseMoveTimer != null && dragSelectionMarker)
                    clearDragMarker();
            }, 20);
        }
    }

    function canAccept(dataTransfer) {
        var types = dataTransfer.types;
        return !types || Array.prototype.some.call(types, function(type) {
            return type == 'text/plain' || type == 'Text';
        });
    }

    function getDropEffect(e) {
        var copyAllowed = ['copy', 'copymove', 'all', 'uninitialized'];
        var moveAllowed = ['move', 'copymove', 'linkmove', 'all', 'uninitialized'];

        var copyModifierState = useragent.isMac ? e.altKey : e.ctrlKey;
        var effectAllowed = "uninitialized";
        try {
            effectAllowed = e.dataTransfer.effectAllowed.toLowerCase();
        } catch (e) {}
        var dropEffect = "none";

        if (copyModifierState && copyAllowed.indexOf(effectAllowed) >= 0)
            dropEffect = "copy";
        else if (moveAllowed.indexOf(effectAllowed) >= 0)
            dropEffect = "move";
        else if (copyAllowed.indexOf(effectAllowed) >= 0)
            dropEffect = "copy";

        return dropEffect;
    }
}

(function() {

    this.dragWait = function() {
        var interval = Date.now() - this.mousedownEvent.time;
        if (interval > this.editor.getDragDelay())
            this.startDrag();
    };

    this.dragWaitEnd = function() {
        var target = this.editor.container;
        target.draggable = false;
        this.startSelect(this.mousedownEvent.getDocumentPosition());
        this.selectEnd();
    };

    this.dragReadyEnd = function(e) {
        this.editor.renderer.$cursorLayer.setBlinking(!this.editor.getReadOnly());
        this.editor.unsetStyle("ace_dragging");
        this.editor.renderer.setCursorStyle("");
        this.dragWaitEnd();
    };

    this.startDrag = function(){
        this.cancelDrag = false;
        var editor = this.editor;
        var target = editor.container;
        target.draggable = true;
        editor.renderer.$cursorLayer.setBlinking(false);
        editor.setStyle("ace_dragging");
        var cursorStyle = useragent.isWin ? "default" : "move";
        editor.renderer.setCursorStyle(cursorStyle);
        this.setState("dragReady");
    };

    this.onMouseDrag = function(e) {
        var target = this.editor.container;
        if (useragent.isIE && this.state == "dragReady") {
            var distance = calcDistance(this.mousedownEvent.x, this.mousedownEvent.y, this.x, this.y);
            if (distance > 3)
                target.dragDrop();
        }
        if (this.state === "dragWait") {
            var distance = calcDistance(this.mousedownEvent.x, this.mousedownEvent.y, this.x, this.y);
            if (distance > 0) {
                target.draggable = false;
                this.startSelect(this.mousedownEvent.getDocumentPosition());
            }
        }
    };

    this.onMouseDown = function(e) {
        if (!this.$dragEnabled)
            return;
        this.mousedownEvent = e;
        var editor = this.editor;

        var inSelection = e.inSelection();
        var button = e.getButton();
        var clickCount = e.domEvent.detail || 1;
        if (clickCount === 1 && button === 0 && inSelection) {
            if (e.editor.inMultiSelectMode && (e.getAccelKey() || e.getShiftKey()))
                return;
            this.mousedownEvent.time = Date.now();
            var eventTarget = e.domEvent.target || e.domEvent.srcElement;
            if ("unselectable" in eventTarget)
                eventTarget.unselectable = "on";
            if (editor.getDragDelay()) {
                if (useragent.isWebKit) {
                    this.cancelDrag = true;
                    var mouseTarget = editor.container;
                    mouseTarget.draggable = true;
                }
                this.setState("dragWait");
            } else {
                this.startDrag();
            }
            this.captureMouse(e, this.onMouseDrag.bind(this));
            e.defaultPrevented = true;
        }
    };

}).call(DragdropHandler.prototype);


function calcDistance(ax, ay, bx, by) {
    return Math.sqrt(Math.pow(bx - ax, 2) + Math.pow(by - ay, 2));
}

exports.DragdropHandler = DragdropHandler;

});

ace.define("ace/lib/net",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {
"use strict";
var dom = acequire("./dom");

exports.get = function (url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.onreadystatechange = function () {
        if (xhr.readyState === 4) {
            callback(xhr.responseText);
        }
    };
    xhr.send(null);
};

exports.loadScript = function(path, callback) {
    var head = dom.getDocumentHead();
    var s = document.createElement('script');

    s.src = path;
    head.appendChild(s);

    s.onload = s.onreadystatechange = function(_, isAbort) {
        if (isAbort || !s.readyState || s.readyState == "loaded" || s.readyState == "complete") {
            s = s.onload = s.onreadystatechange = null;
            if (!isAbort)
                callback();
        }
    };
};
exports.qualifyURL = function(url) {
    var a = document.createElement('a');
    a.href = url;
    return a.href;
};

});

ace.define("ace/lib/event_emitter",["require","exports","module"], function(acequire, exports, module) {
"use strict";

var EventEmitter = {};
var stopPropagation = function() { this.propagationStopped = true; };
var preventDefault = function() { this.defaultPrevented = true; };

EventEmitter._emit =
EventEmitter._dispatchEvent = function(eventName, e) {
    this._eventRegistry || (this._eventRegistry = {});
    this._defaultHandlers || (this._defaultHandlers = {});

    var listeners = this._eventRegistry[eventName] || [];
    var defaultHandler = this._defaultHandlers[eventName];
    if (!listeners.length && !defaultHandler)
        return;

    if (typeof e != "object" || !e)
        e = {};

    if (!e.type)
        e.type = eventName;
    if (!e.stopPropagation)
        e.stopPropagation = stopPropagation;
    if (!e.preventDefault)
        e.preventDefault = preventDefault;

    listeners = listeners.slice();
    for (var i=0; i<listeners.length; i++) {
        listeners[i](e, this);
        if (e.propagationStopped)
            break;
    }
    
    if (defaultHandler && !e.defaultPrevented)
        return defaultHandler(e, this);
};


EventEmitter._signal = function(eventName, e) {
    var listeners = (this._eventRegistry || {})[eventName];
    if (!listeners)
        return;
    listeners = listeners.slice();
    for (var i=0; i<listeners.length; i++)
        listeners[i](e, this);
};

EventEmitter.once = function(eventName, callback) {
    var _self = this;
    callback && this.addEventListener(eventName, function newCallback() {
        _self.removeEventListener(eventName, newCallback);
        callback.apply(null, arguments);
    });
};


EventEmitter.setDefaultHandler = function(eventName, callback) {
    var handlers = this._defaultHandlers;
    if (!handlers)
        handlers = this._defaultHandlers = {_disabled_: {}};
    
    if (handlers[eventName]) {
        var old = handlers[eventName];
        var disabled = handlers._disabled_[eventName];
        if (!disabled)
            handlers._disabled_[eventName] = disabled = [];
        disabled.push(old);
        var i = disabled.indexOf(callback);
        if (i != -1) 
            disabled.splice(i, 1);
    }
    handlers[eventName] = callback;
};
EventEmitter.removeDefaultHandler = function(eventName, callback) {
    var handlers = this._defaultHandlers;
    if (!handlers)
        return;
    var disabled = handlers._disabled_[eventName];
    
    if (handlers[eventName] == callback) {
        var old = handlers[eventName];
        if (disabled)
            this.setDefaultHandler(eventName, disabled.pop());
    } else if (disabled) {
        var i = disabled.indexOf(callback);
        if (i != -1)
            disabled.splice(i, 1);
    }
};

EventEmitter.on =
EventEmitter.addEventListener = function(eventName, callback, capturing) {
    this._eventRegistry = this._eventRegistry || {};

    var listeners = this._eventRegistry[eventName];
    if (!listeners)
        listeners = this._eventRegistry[eventName] = [];

    if (listeners.indexOf(callback) == -1)
        listeners[capturing ? "unshift" : "push"](callback);
    return callback;
};

EventEmitter.off =
EventEmitter.removeListener =
EventEmitter.removeEventListener = function(eventName, callback) {
    this._eventRegistry = this._eventRegistry || {};

    var listeners = this._eventRegistry[eventName];
    if (!listeners)
        return;

    var index = listeners.indexOf(callback);
    if (index !== -1)
        listeners.splice(index, 1);
};

EventEmitter.removeAllListeners = function(eventName) {
    if (this._eventRegistry) this._eventRegistry[eventName] = [];
};

exports.EventEmitter = EventEmitter;

});

ace.define("ace/lib/app_config",["require","exports","module","ace/lib/oop","ace/lib/event_emitter"], function(acequire, exports, module) {
"no use strict";

var oop = acequire("./oop");
var EventEmitter = acequire("./event_emitter").EventEmitter;

var optionsProvider = {
    setOptions: function(optList) {
        Object.keys(optList).forEach(function(key) {
            this.setOption(key, optList[key]);
        }, this);
    },
    getOptions: function(optionNames) {
        var result = {};
        if (!optionNames) {
            optionNames = Object.keys(this.$options);
        } else if (!Array.isArray(optionNames)) {
            result = optionNames;
            optionNames = Object.keys(result);
        }
        optionNames.forEach(function(key) {
            result[key] = this.getOption(key);
        }, this);
        return result;
    },
    setOption: function(name, value) {
        if (this["$" + name] === value)
            return;
        var opt = this.$options[name];
        if (!opt) {
            return warn('misspelled option "' + name + '"');
        }
        if (opt.forwardTo)
            return this[opt.forwardTo] && this[opt.forwardTo].setOption(name, value);

        if (!opt.handlesSet)
            this["$" + name] = value;
        if (opt && opt.set)
            opt.set.call(this, value);
    },
    getOption: function(name) {
        var opt = this.$options[name];
        if (!opt) {
            return warn('misspelled option "' + name + '"');
        }
        if (opt.forwardTo)
            return this[opt.forwardTo] && this[opt.forwardTo].getOption(name);
        return opt && opt.get ? opt.get.call(this) : this["$" + name];
    }
};

function warn(message) {
    if (typeof console != "undefined" && console.warn)
        console.warn.apply(console, arguments);
}

function reportError(msg, data) {
    var e = new Error(msg);
    e.data = data;
    if (typeof console == "object" && console.error)
        console.error(e);
    setTimeout(function() { throw e; });
}

var AppConfig = function() {
    this.$defaultOptions = {};
};

(function() {
    oop.implement(this, EventEmitter);
    this.defineOptions = function(obj, path, options) {
        if (!obj.$options)
            this.$defaultOptions[path] = obj.$options = {};

        Object.keys(options).forEach(function(key) {
            var opt = options[key];
            if (typeof opt == "string")
                opt = {forwardTo: opt};

            opt.name || (opt.name = key);
            obj.$options[opt.name] = opt;
            if ("initialValue" in opt)
                obj["$" + opt.name] = opt.initialValue;
        });
        oop.implement(obj, optionsProvider);

        return this;
    };

    this.resetOptions = function(obj) {
        Object.keys(obj.$options).forEach(function(key) {
            var opt = obj.$options[key];
            if ("value" in opt)
                obj.setOption(key, opt.value);
        });
    };

    this.setDefaultValue = function(path, name, value) {
        var opts = this.$defaultOptions[path] || (this.$defaultOptions[path] = {});
        if (opts[name]) {
            if (opts.forwardTo)
                this.setDefaultValue(opts.forwardTo, name, value);
            else
                opts[name].value = value;
        }
    };

    this.setDefaultValues = function(path, optionHash) {
        Object.keys(optionHash).forEach(function(key) {
            this.setDefaultValue(path, key, optionHash[key]);
        }, this);
    };
    
    this.warn = warn;
    this.reportError = reportError;
    
}).call(AppConfig.prototype);

exports.AppConfig = AppConfig;

});

ace.define("ace/config",["require","exports","module","ace/lib/lang","ace/lib/oop","ace/lib/net","ace/lib/app_config"], function(acequire, exports, module) {
"no use strict";

var lang = acequire("./lib/lang");
var oop = acequire("./lib/oop");
var net = acequire("./lib/net");
var AppConfig = acequire("./lib/app_config").AppConfig;

module.exports = exports = new AppConfig();

var global = (function() {
    return this || typeof window != "undefined" && window;
})();

var options = {
    packaged: false,
    workerPath: null,
    modePath: null,
    themePath: null,
    basePath: "",
    suffix: ".js",
    $moduleUrls: {}
};

exports.get = function(key) {
    if (!options.hasOwnProperty(key))
        throw new Error("Unknown config key: " + key);

    return options[key];
};

exports.set = function(key, value) {
    if (!options.hasOwnProperty(key))
        throw new Error("Unknown config key: " + key);

    options[key] = value;
};

exports.all = function() {
    return lang.copyObject(options);
};
exports.moduleUrl = function(name, component) {
    if (options.$moduleUrls[name])
        return options.$moduleUrls[name];

    var parts = name.split("/");
    component = component || parts[parts.length - 2] || "";
    var sep = component == "snippets" ? "/" : "-";
    var base = parts[parts.length - 1];
    if (component == "worker" && sep == "-") {
        var re = new RegExp("^" + component + "[\\-_]|[\\-_]" + component + "$", "g");
        base = base.replace(re, "");
    }

    if ((!base || base == component) && parts.length > 1)
        base = parts[parts.length - 2];
    var path = options[component + "Path"];
    if (path == null) {
        path = options.basePath;
    } else if (sep == "/") {
        component = sep = "";
    }
    if (path && path.slice(-1) != "/")
        path += "/";
    return path + component + sep + base + this.get("suffix");
};

exports.setModuleUrl = function(name, subst) {
    return options.$moduleUrls[name] = subst;
};

exports.$loading = {};
exports.loadModule = function(moduleName, onLoad) {
    var module, moduleType;
    if (Array.isArray(moduleName)) {
        moduleType = moduleName[0];
        moduleName = moduleName[1];
    }

    try {
        module = acequire(moduleName);
    } catch (e) {}
    if (module && !exports.$loading[moduleName])
        return onLoad && onLoad(module);

    if (!exports.$loading[moduleName])
        exports.$loading[moduleName] = [];

    exports.$loading[moduleName].push(onLoad);

    if (exports.$loading[moduleName].length > 1)
        return;

    var afterLoad = function() {
        acequire([moduleName], function(module) {
            exports._emit("load.module", {name: moduleName, module: module});
            var listeners = exports.$loading[moduleName];
            exports.$loading[moduleName] = null;
            listeners.forEach(function(onLoad) {
                onLoad && onLoad(module);
            });
        });
    };

    if (!exports.get("packaged"))
        return afterLoad();
    net.loadScript(exports.moduleUrl(moduleName, moduleType), afterLoad);
};
init(true);function init(packaged) {

    if (!global || !global.document)
        return;
    
    options.packaged = packaged || acequire.packaged || module.packaged || (global.define && __webpack_require__(/*! !webpack amd define */ 192).packaged);

    var scriptOptions = {};
    var scriptUrl = "";
    var currentScript = (document.currentScript || document._currentScript ); // native or polyfill
    var currentDocument = currentScript && currentScript.ownerDocument || document;
    
    var scripts = currentDocument.getElementsByTagName("script");
    for (var i=0; i<scripts.length; i++) {
        var script = scripts[i];

        var src = script.src || script.getAttribute("src");
        if (!src)
            continue;

        var attributes = script.attributes;
        for (var j=0, l=attributes.length; j < l; j++) {
            var attr = attributes[j];
            if (attr.name.indexOf("data-ace-") === 0) {
                scriptOptions[deHyphenate(attr.name.replace(/^data-ace-/, ""))] = attr.value;
            }
        }

        var m = src.match(/^(.*)\/ace(\-\w+)?\.js(\?|$)/);
        if (m)
            scriptUrl = m[1];
    }

    if (scriptUrl) {
        scriptOptions.base = scriptOptions.base || scriptUrl;
        scriptOptions.packaged = true;
    }

    scriptOptions.basePath = scriptOptions.base;
    scriptOptions.workerPath = scriptOptions.workerPath || scriptOptions.base;
    scriptOptions.modePath = scriptOptions.modePath || scriptOptions.base;
    scriptOptions.themePath = scriptOptions.themePath || scriptOptions.base;
    delete scriptOptions.base;

    for (var key in scriptOptions)
        if (typeof scriptOptions[key] !== "undefined")
            exports.set(key, scriptOptions[key]);
}

exports.init = init;

function deHyphenate(str) {
    return str.replace(/-(.)/g, function(m, m1) { return m1.toUpperCase(); });
}

});

ace.define("ace/mouse/mouse_handler",["require","exports","module","ace/lib/event","ace/lib/useragent","ace/mouse/default_handlers","ace/mouse/default_gutter_handler","ace/mouse/mouse_event","ace/mouse/dragdrop_handler","ace/config"], function(acequire, exports, module) {
"use strict";

var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");
var DefaultHandlers = acequire("./default_handlers").DefaultHandlers;
var DefaultGutterHandler = acequire("./default_gutter_handler").GutterHandler;
var MouseEvent = acequire("./mouse_event").MouseEvent;
var DragdropHandler = acequire("./dragdrop_handler").DragdropHandler;
var config = acequire("../config");

var MouseHandler = function(editor) {
    var _self = this;
    this.editor = editor;

    new DefaultHandlers(this);
    new DefaultGutterHandler(this);
    new DragdropHandler(this);

    var focusEditor = function(e) {
        var windowBlurred = !document.hasFocus || !document.hasFocus()
            || !editor.isFocused() && document.activeElement == (editor.textInput && editor.textInput.getElement());
        if (windowBlurred)
            window.focus();
        editor.focus();
    };

    var mouseTarget = editor.renderer.getMouseEventTarget();
    event.addListener(mouseTarget, "click", this.onMouseEvent.bind(this, "click"));
    event.addListener(mouseTarget, "mousemove", this.onMouseMove.bind(this, "mousemove"));
    event.addMultiMouseDownListener([
        mouseTarget,
        editor.renderer.scrollBarV && editor.renderer.scrollBarV.inner,
        editor.renderer.scrollBarH && editor.renderer.scrollBarH.inner,
        editor.textInput && editor.textInput.getElement()
    ].filter(Boolean), [400, 300, 250], this, "onMouseEvent");
    event.addMouseWheelListener(editor.container, this.onMouseWheel.bind(this, "mousewheel"));
    event.addTouchMoveListener(editor.container, this.onTouchMove.bind(this, "touchmove"));

    var gutterEl = editor.renderer.$gutter;
    event.addListener(gutterEl, "mousedown", this.onMouseEvent.bind(this, "guttermousedown"));
    event.addListener(gutterEl, "click", this.onMouseEvent.bind(this, "gutterclick"));
    event.addListener(gutterEl, "dblclick", this.onMouseEvent.bind(this, "gutterdblclick"));
    event.addListener(gutterEl, "mousemove", this.onMouseEvent.bind(this, "guttermousemove"));

    event.addListener(mouseTarget, "mousedown", focusEditor);
    event.addListener(gutterEl, "mousedown", focusEditor);
    if (useragent.isIE && editor.renderer.scrollBarV) {
        event.addListener(editor.renderer.scrollBarV.element, "mousedown", focusEditor);
        event.addListener(editor.renderer.scrollBarH.element, "mousedown", focusEditor);
    }

    editor.on("mousemove", function(e){
        if (_self.state || _self.$dragDelay || !_self.$dragEnabled)
            return;

        var character = editor.renderer.screenToTextCoordinates(e.x, e.y);
        var range = editor.session.selection.getRange();
        var renderer = editor.renderer;

        if (!range.isEmpty() && range.insideStart(character.row, character.column)) {
            renderer.setCursorStyle("default");
        } else {
            renderer.setCursorStyle("");
        }
    });
};

(function() {
    this.onMouseEvent = function(name, e) {
        this.editor._emit(name, new MouseEvent(e, this.editor));
    };

    this.onMouseMove = function(name, e) {
        var listeners = this.editor._eventRegistry && this.editor._eventRegistry.mousemove;
        if (!listeners || !listeners.length)
            return;

        this.editor._emit(name, new MouseEvent(e, this.editor));
    };

    this.onMouseWheel = function(name, e) {
        var mouseEvent = new MouseEvent(e, this.editor);
        mouseEvent.speed = this.$scrollSpeed * 2;
        mouseEvent.wheelX = e.wheelX;
        mouseEvent.wheelY = e.wheelY;

        this.editor._emit(name, mouseEvent);
    };
    
    this.onTouchMove = function (name, e) {
        var mouseEvent = new MouseEvent(e, this.editor);
        mouseEvent.speed = 1;//this.$scrollSpeed * 2;
        mouseEvent.wheelX = e.wheelX;
        mouseEvent.wheelY = e.wheelY;
        this.editor._emit(name, mouseEvent);
    };

    this.setState = function(state) {
        this.state = state;
    };

    this.captureMouse = function(ev, mouseMoveHandler) {
        this.x = ev.x;
        this.y = ev.y;

        this.isMousePressed = true;
        var renderer = this.editor.renderer;
        if (renderer.$keepTextAreaAtCursor)
            renderer.$keepTextAreaAtCursor = null;

        var self = this;
        var onMouseMove = function(e) {
            if (!e) return;
            if (useragent.isWebKit && !e.which && self.releaseMouse)
                return self.releaseMouse();

            self.x = e.clientX;
            self.y = e.clientY;
            mouseMoveHandler && mouseMoveHandler(e);
            self.mouseEvent = new MouseEvent(e, self.editor);
            self.$mouseMoved = true;
        };

        var onCaptureEnd = function(e) {
            clearInterval(timerId);
            onCaptureInterval();
            self[self.state + "End"] && self[self.state + "End"](e);
            self.state = "";
            if (renderer.$keepTextAreaAtCursor == null) {
                renderer.$keepTextAreaAtCursor = true;
                renderer.$moveTextAreaToCursor();
            }
            self.isMousePressed = false;
            self.$onCaptureMouseMove = self.releaseMouse = null;
            e && self.onMouseEvent("mouseup", e);
        };

        var onCaptureInterval = function() {
            self[self.state] && self[self.state]();
            self.$mouseMoved = false;
        };

        if (useragent.isOldIE && ev.domEvent.type == "dblclick") {
            return setTimeout(function() {onCaptureEnd(ev);});
        }

        self.$onCaptureMouseMove = onMouseMove;
        self.releaseMouse = event.capture(this.editor.container, onMouseMove, onCaptureEnd);
        var timerId = setInterval(onCaptureInterval, 20);
    };
    this.releaseMouse = null;
    this.cancelContextMenu = function() {
        var stop = function(e) {
            if (e && e.domEvent && e.domEvent.type != "contextmenu")
                return;
            this.editor.off("nativecontextmenu", stop);
            if (e && e.domEvent)
                event.stopEvent(e.domEvent);
        }.bind(this);
        setTimeout(stop, 10);
        this.editor.on("nativecontextmenu", stop);
    };
}).call(MouseHandler.prototype);

config.defineOptions(MouseHandler.prototype, "mouseHandler", {
    scrollSpeed: {initialValue: 2},
    dragDelay: {initialValue: (useragent.isMac ? 150 : 0)},
    dragEnabled: {initialValue: true},
    focusTimout: {initialValue: 0},
    tooltipFollowsMouse: {initialValue: true}
});


exports.MouseHandler = MouseHandler;
});

ace.define("ace/mouse/fold_handler",["require","exports","module"], function(acequire, exports, module) {
"use strict";

function FoldHandler(editor) {

    editor.on("click", function(e) {
        var position = e.getDocumentPosition();
        var session = editor.session;
        var fold = session.getFoldAt(position.row, position.column, 1);
        if (fold) {
            if (e.getAccelKey())
                session.removeFold(fold);
            else
                session.expandFold(fold);

            e.stop();
        }
    });

    editor.on("gutterclick", function(e) {
        var gutterRegion = editor.renderer.$gutterLayer.getRegion(e);

        if (gutterRegion == "foldWidgets") {
            var row = e.getDocumentPosition().row;
            var session = editor.session;
            if (session.foldWidgets && session.foldWidgets[row])
                editor.session.onFoldWidgetClick(row, e);
            if (!editor.isFocused())
                editor.focus();
            e.stop();
        }
    });

    editor.on("gutterdblclick", function(e) {
        var gutterRegion = editor.renderer.$gutterLayer.getRegion(e);

        if (gutterRegion == "foldWidgets") {
            var row = e.getDocumentPosition().row;
            var session = editor.session;
            var data = session.getParentFoldRangeData(row, true);
            var range = data.range || data.firstRange;

            if (range) {
                row = range.start.row;
                var fold = session.getFoldAt(row, session.getLine(row).length, 1);

                if (fold) {
                    session.removeFold(fold);
                } else {
                    session.addFold("...", range);
                    editor.renderer.scrollCursorIntoView({row: range.start.row, column: 0});
                }
            }
            e.stop();
        }
    });
}

exports.FoldHandler = FoldHandler;

});

ace.define("ace/keyboard/keybinding",["require","exports","module","ace/lib/keys","ace/lib/event"], function(acequire, exports, module) {
"use strict";

var keyUtil  = acequire("../lib/keys");
var event = acequire("../lib/event");

var KeyBinding = function(editor) {
    this.$editor = editor;
    this.$data = {editor: editor};
    this.$handlers = [];
    this.setDefaultHandler(editor.commands);
};

(function() {
    this.setDefaultHandler = function(kb) {
        this.removeKeyboardHandler(this.$defaultHandler);
        this.$defaultHandler = kb;
        this.addKeyboardHandler(kb, 0);
    };

    this.setKeyboardHandler = function(kb) {
        var h = this.$handlers;
        if (h[h.length - 1] == kb)
            return;

        while (h[h.length - 1] && h[h.length - 1] != this.$defaultHandler)
            this.removeKeyboardHandler(h[h.length - 1]);

        this.addKeyboardHandler(kb, 1);
    };

    this.addKeyboardHandler = function(kb, pos) {
        if (!kb)
            return;
        if (typeof kb == "function" && !kb.handleKeyboard)
            kb.handleKeyboard = kb;
        var i = this.$handlers.indexOf(kb);
        if (i != -1)
            this.$handlers.splice(i, 1);

        if (pos == undefined)
            this.$handlers.push(kb);
        else
            this.$handlers.splice(pos, 0, kb);

        if (i == -1 && kb.attach)
            kb.attach(this.$editor);
    };

    this.removeKeyboardHandler = function(kb) {
        var i = this.$handlers.indexOf(kb);
        if (i == -1)
            return false;
        this.$handlers.splice(i, 1);
        kb.detach && kb.detach(this.$editor);
        return true;
    };

    this.getKeyboardHandler = function() {
        return this.$handlers[this.$handlers.length - 1];
    };
    
    this.getStatusText = function() {
        var data = this.$data;
        var editor = data.editor;
        return this.$handlers.map(function(h) {
            return h.getStatusText && h.getStatusText(editor, data) || "";
        }).filter(Boolean).join(" ");
    };

    this.$callKeyboardHandlers = function(hashId, keyString, keyCode, e) {
        var toExecute;
        var success = false;
        var commands = this.$editor.commands;

        for (var i = this.$handlers.length; i--;) {
            toExecute = this.$handlers[i].handleKeyboard(
                this.$data, hashId, keyString, keyCode, e
            );
            if (!toExecute || !toExecute.command)
                continue;
            if (toExecute.command == "null") {
                success = true;
            } else {
                success = commands.exec(toExecute.command, this.$editor, toExecute.args, e);
            }
            if (success && e && hashId != -1 && 
                toExecute.passEvent != true && toExecute.command.passEvent != true
            ) {
                event.stopEvent(e);
            }
            if (success)
                break;
        }
        
        if (!success && hashId == -1) {
            toExecute = {command: "insertstring"};
            success = commands.exec("insertstring", this.$editor, keyString);
        }
        
        if (success && this.$editor._signal)
            this.$editor._signal("keyboardActivity", toExecute);
        
        return success;
    };

    this.onCommandKey = function(e, hashId, keyCode) {
        var keyString = keyUtil.keyCodeToString(keyCode);
        this.$callKeyboardHandlers(hashId, keyString, keyCode, e);
    };

    this.onTextInput = function(text) {
        this.$callKeyboardHandlers(-1, text);
    };

}).call(KeyBinding.prototype);

exports.KeyBinding = KeyBinding;
});

ace.define("ace/lib/bidiutil",["require","exports","module"], function(acequire, exports, module) {
"use strict";

var ArabicAlefBetIntervalsBegine = ['\u0621', '\u0641'];
var ArabicAlefBetIntervalsEnd = ['\u063A', '\u064a'];
var dir = 0, hiLevel = 0;
var lastArabic = false, hasUBAT_AL = false,  hasUBAT_B = false,  hasUBAT_S = false, hasBlockSep = false, hasSegSep = false;

var impTab_LTR = [	[	0,		3,		0,		1,		0,		0,		0	],	[	0,		3,		0,		1,		2,		2,		0	],	[	0,		3,		0,		0x11,		2,		0,		1	],	[	0,		3,		5,		5,		4,		1,		0	],	[	0,		3,		0x15,		0x15,		4,		0,		1	],	[	0,		3,		5,		5,		4,		2,		0	]
];

var impTab_RTL = [	[	2,		0,		1,		1,		0,		1,		0	],	[	2,		0,		1,		1,		0,		2,		0	],	[	2,		0,		2,		1,		3,		2,		0	],	[	2,		0,		2,		0x21,		3,		1,		1	]
];

var LTR = 0, RTL = 1;

var L = 0;
var R = 1;
var EN = 2;
var AN = 3;
var ON = 4;
var B = 5;
var S = 6;
var AL = 7;
var WS = 8;
var CS = 9;
var ES = 10;
var ET = 11;
var NSM = 12;
var LRE = 13;
var RLE = 14;
var PDF = 15;
var LRO = 16;
var RLO = 17;
var BN = 18;

var UnicodeTBL00 = [
BN,BN,BN,BN,BN,BN,BN,BN,BN,S,B,S,WS,B,BN,BN,
BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,B,B,B,S,
WS,ON,ON,ET,ET,ET,ON,ON,ON,ON,ON,ES,CS,ES,CS,CS,
EN,EN,EN,EN,EN,EN,EN,EN,EN,EN,CS,ON,ON,ON,ON,ON,
ON,L,L,L,L,L,L,L,L,L,L,L,L,L,L,L,
L,L,L,L,L,L,L,L,L,L,L,ON,ON,ON,ON,ON,
ON,L,L,L,L,L,L,L,L,L,L,L,L,L,L,L,
L,L,L,L,L,L,L,L,L,L,L,ON,ON,ON,ON,BN,
BN,BN,BN,BN,BN,B,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,
BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,BN,
CS,ON,ET,ET,ET,ET,ON,ON,ON,ON,L,ON,ON,BN,ON,ON,
ET,ET,EN,EN,ON,L,ON,ON,ON,EN,L,ON,ON,ON,ON,ON
];

var UnicodeTBL20 = [
WS,WS,WS,WS,WS,WS,WS,WS,WS,WS,WS,BN,BN,BN,L,R	,
ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,
ON,ON,ON,ON,ON,ON,ON,ON,WS,B,LRE,RLE,PDF,LRO,RLO,CS,
ET,ET,ET,ET,ET,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,
ON,ON,ON,ON,CS,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,
ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,ON,WS
];

function _computeLevels(chars, levels, len, charTypes) {
	var impTab = dir ? impTab_RTL : impTab_LTR
		, prevState = null, newClass = null, newLevel = null, newState = 0
		, action = null, cond = null, condPos = -1, i = null, ix = null, classes = [];

	if (!charTypes) {
		for (i = 0, charTypes = []; i < len; i++) {
			charTypes[i] = _getCharacterType(chars[i]);
		}
	}
	hiLevel = dir;
	lastArabic = false;
	hasUBAT_AL = false;
	hasUBAT_B = false;
	hasUBAT_S = false;
	for (ix = 0; ix < len; ix++){
		prevState = newState;
		classes[ix] = newClass = _getCharClass(chars, charTypes, classes, ix);
		newState = impTab[prevState][newClass];
		action = newState & 0xF0;
		newState &= 0x0F;
		levels[ix] = newLevel = impTab[newState][5];
		if (action > 0){
			if (action == 0x10){
				for(i = condPos; i < ix; i++){
					levels[i] = 1;
				}
				condPos = -1;
			} else {
				condPos = -1;
			}
		}
		cond = impTab[newState][6];
		if (cond){
			if(condPos == -1){
				condPos = ix;
			}
		}else{
			if (condPos > -1){
				for(i = condPos; i < ix; i++){
					levels[i] = newLevel;
				}
				condPos = -1;
			}
		}
		if (charTypes[ix] == B){
			levels[ix] = 0;
		}
		hiLevel |= newLevel;
	}
	if (hasUBAT_S){
		for(i = 0; i < len; i++){
			if(charTypes[i] == S){
				levels[i] = dir;
				for(var j = i - 1; j >= 0; j--){
					if(charTypes[j] == WS){
						levels[j] = dir;
					}else{
						break;
					}
				}
			}
		}
	}
}

function _invertLevel(lev, levels, _array) {
	if (hiLevel < lev){
		return;
	}
	if (lev == 1 && dir == RTL && !hasUBAT_B){
		_array.reverse();
		return;
	}
	var len = _array.length, start = 0, end, lo, hi, tmp;
	while(start < len){
		if (levels[start] >= lev){
			end = start + 1;
		while(end < len && levels[end] >= lev){
			end++;
		}
		for(lo = start, hi = end - 1 ; lo < hi; lo++, hi--){
			tmp = _array[lo];
			_array[lo] = _array[hi];
			_array[hi] = tmp;
		}
		start = end;
	}
	start++;
	}
}

function _getCharClass(chars, types, classes, ix) {
	var cType = types[ix], wType, nType, len, i;
	switch(cType){
		case L:
		case R:
			lastArabic = false;
		case ON:
		case AN:
			return cType;
		case EN:
			return lastArabic ? AN : EN;
		case AL:
			lastArabic = true;
			hasUBAT_AL = true;
			return R;
		case WS:
			return ON;
		case CS:
			if (ix < 1 || (ix + 1) >= types.length ||
				((wType = classes[ix - 1]) != EN && wType != AN) ||
				((nType = types[ix + 1]) != EN && nType != AN)){
				return ON;
			}
			if (lastArabic){nType = AN;}
			return nType == wType ? nType : ON;
		case ES:
			wType = ix > 0 ? classes[ix - 1] : B;
			if (wType == EN && (ix + 1) < types.length && types[ix + 1] == EN){
				return EN;
			}
			return ON;
		case ET:
			if (ix > 0 && classes[ix - 1] == EN){
				return EN;
			}
			if (lastArabic){
				return ON;
			}
			i = ix + 1;
			len = types.length;
			while (i < len && types[i] == ET){
				i++;
			}
			if (i < len && types[i] == EN){
				return EN;
			}
			return ON;
		case NSM:
			len = types.length;
			i = ix + 1;
			while (i < len && types[i] == NSM){
				i++;
			}
			if (i < len){
				var c = chars[ix], rtlCandidate = (c >= 0x0591 && c <= 0x08FF) || c == 0xFB1E;

				wType = types[i];
				if (rtlCandidate && (wType == R || wType == AL)){
					return R;
				}
			}

			if (ix < 1 || (wType = types[ix - 1]) == B){
				return ON;
			}
			return classes[ix - 1];
		case B:
			lastArabic = false;
			hasUBAT_B = true;
			return dir;
		case S:
			hasUBAT_S = true;
			return ON;
		case LRE:
		case RLE:
		case LRO:
		case RLO:
		case PDF:
			lastArabic = false;
		case BN:
			return ON;
	}
}

function _getCharacterType( ch ) {
	var uc = ch.charCodeAt(0), hi = uc >> 8;

	if (hi == 0) {
		return ((uc > 0x00BF) ? L : UnicodeTBL00[uc]);
	} else if (hi == 5) {
		return (/[\u0591-\u05f4]/.test(ch) ? R : L);
	} else if (hi == 6) {
		if (/[\u0610-\u061a\u064b-\u065f\u06d6-\u06e4\u06e7-\u06ed]/.test(ch))
			return NSM;
		else if (/[\u0660-\u0669\u066b-\u066c]/.test(ch))
			return AN;
		else if (uc == 0x066A)
			return ET;
		else if (/[\u06f0-\u06f9]/.test(ch))
			return EN;
		else
			return AL;
	} else if (hi == 0x20 && uc <= 0x205F) {
		return UnicodeTBL20[uc & 0xFF];
	} else if (hi == 0xFE) {
		return (uc >= 0xFE70 ? AL : ON);
	}
	return ON;
}

function _isArabicDiacritics( ch ) {
	return (ch >= '\u064b' && ch <= '\u0655');
}
exports.L = L;
exports.R = R;
exports.EN = EN;
exports.ON_R = 3;
exports.AN = 4;
exports.R_H = 5;
exports.B = 6;

exports.DOT = "\xB7";
exports.doBidiReorder = function(text, textCharTypes, isRtl) {
	if (text.length < 2)
		return {};

	var chars = text.split(""), logicalFromVisual = new Array(chars.length),
		bidiLevels = new Array(chars.length), levels = [];

	dir = isRtl ? RTL : LTR;

	_computeLevels(chars, levels, chars.length, textCharTypes);

	for (var i = 0; i < logicalFromVisual.length; logicalFromVisual[i] = i, i++);

	_invertLevel(2, levels, logicalFromVisual);
	_invertLevel(1, levels, logicalFromVisual);

	for (var i = 0; i < logicalFromVisual.length - 1; i++) { //fix levels to reflect character width
		if (textCharTypes[i] === AN) {
			levels[i] = exports.AN;
		} else if (levels[i] === R && ((textCharTypes[i] > AL && textCharTypes[i] < LRE)
			|| textCharTypes[i] === ON || textCharTypes[i] === BN)) {
			levels[i] = exports.ON_R;
		} else if ((i > 0 && chars[i - 1] === '\u0644') && /\u0622|\u0623|\u0625|\u0627/.test(chars[i])) {
			levels[i - 1] = levels[i] = exports.R_H;
			i++;
		}
	}
	if (chars[chars.length - 1] === exports.DOT)
		levels[chars.length - 1] = exports.B;

	for (var i = 0; i < logicalFromVisual.length; i++) {
		bidiLevels[i] = levels[logicalFromVisual[i]];
	}

	return {'logicalFromVisual': logicalFromVisual, 'bidiLevels': bidiLevels};
};
exports.hasBidiCharacters = function(text, textCharTypes){
	var ret = false;
	for (var i = 0; i < text.length; i++){
		textCharTypes[i] = _getCharacterType(text.charAt(i));
		if (!ret && (textCharTypes[i] == R || textCharTypes[i] == AL))
			ret = true;
	}
	return ret;
};
exports.getVisualFromLogicalIdx = function(logIdx, rowMap) {
	for (var i = 0; i < rowMap.logicalFromVisual.length; i++) {
		if (rowMap.logicalFromVisual[i] == logIdx)
			return i;
	}
	return 0;
};

});

ace.define("ace/bidihandler",["require","exports","module","ace/lib/bidiutil","ace/lib/lang","ace/lib/useragent"], function(acequire, exports, module) {
"use strict";

var bidiUtil = acequire("./lib/bidiutil");
var lang = acequire("./lib/lang");
var useragent = acequire("./lib/useragent");
var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
var BidiHandler = function(session) {
    this.session = session;
    this.bidiMap = {};
    this.currentRow = null;
    this.bidiUtil = bidiUtil;
    this.charWidths = [];
    this.EOL = "\xAC";
    this.showInvisibles = true;
    this.isRtlDir = false;
    this.line = "";
    this.wrapIndent = 0;
    this.isLastRow = false;
    this.EOF = "\xB6";
    this.seenBidi = false;
};

(function() {
    this.isBidiRow = function(screenRow, docRow, splitIndex) {
        if (!this.seenBidi)
            return false;
        if (screenRow !== this.currentRow) {
            this.currentRow = screenRow;
            this.updateRowLine(docRow, splitIndex);
            this.updateBidiMap();
        }
        return this.bidiMap.bidiLevels;
    };

    this.onChange = function(delta) {
        if (!this.seenBidi) {
            if (delta.action == "insert" && bidiRE.test(delta.lines.join("\n"))) {
                this.seenBidi = true;
                this.currentRow = null;
            }
        }
        else {
            this.currentRow = null;
        }
    };

    this.getDocumentRow = function() {
        var docRow = 0;
        var rowCache = this.session.$screenRowCache;
        if (rowCache.length) {
            var index = this.session.$getRowCacheIndex(rowCache, this.currentRow);
            if (index >= 0)
                docRow = this.session.$docRowCache[index];
        }

        return docRow;
    };

    this.getSplitIndex = function() {
        var splitIndex = 0;
        var rowCache = this.session.$screenRowCache;
        if (rowCache.length) {
            var currentIndex, prevIndex = this.session.$getRowCacheIndex(rowCache, this.currentRow);
            while (this.currentRow - splitIndex > 0) {
                currentIndex = this.session.$getRowCacheIndex(rowCache, this.currentRow - splitIndex - 1);
                if (currentIndex !== prevIndex)
                    break;

                prevIndex = currentIndex;
                splitIndex++;
            }
        }

        return splitIndex;
    };

    this.updateRowLine = function(docRow, splitIndex) {
        if (docRow === undefined)
            docRow = this.getDocumentRow();

        this.wrapIndent = 0;
        this.isLastRow = (docRow === this.session.getLength() - 1);
        this.line = this.session.getLine(docRow);
        if (this.session.$useWrapMode) {
            var splits = this.session.$wrapData[docRow];
            if (splits) {
                if (splitIndex === undefined)
                    splitIndex = this.getSplitIndex();

                if(splitIndex > 0 && splits.length) {
                    this.wrapIndent = splits.indent;
                    this.line = (splitIndex < splits.length) ?
                        this.line.substring(splits[splitIndex - 1], splits[splits.length - 1]) :
                            this.line.substring(splits[splits.length - 1]);
                } else {
                    this.line = this.line.substring(0, splits[splitIndex]);
                }
            }
        }
        var session = this.session, shift = 0, size;
        this.line = this.line.replace(/\t|[\u1100-\u2029, \u202F-\uFFE6]/g, function(ch, i){
            if (ch === '\t' || session.isFullWidth(ch.charCodeAt(0))) {
                size = (ch === '\t') ? session.getScreenTabSize(i + shift) : 2;
                shift += size - 1;
                return lang.stringRepeat(bidiUtil.DOT, size);
            }
            return ch;
        });
    };

    this.updateBidiMap = function() {
        var textCharTypes = [], endOfLine = this.isLastRow ? this.EOF : this.EOL;
        var line = this.line + (this.showInvisibles ? endOfLine : bidiUtil.DOT);
        if (bidiUtil.hasBidiCharacters(line, textCharTypes)) {
            this.bidiMap = bidiUtil.doBidiReorder(line, textCharTypes, this.isRtlDir);
        } else {
            this.bidiMap = {};
        }
    };
    this.markAsDirty = function() {
        this.currentRow = null;
    };
    this.updateCharacterWidths = function(fontMetrics) {
        if (!this.seenBidi)
            return;
        if (this.characterWidth === fontMetrics.$characterSize.width)
            return;

        var characterWidth = this.characterWidth = fontMetrics.$characterSize.width;
        var bidiCharWidth = fontMetrics.$measureCharWidth("\u05d4");

        this.charWidths[bidiUtil.L] = this.charWidths[bidiUtil.EN] = this.charWidths[bidiUtil.ON_R] = characterWidth;
        this.charWidths[bidiUtil.R] = this.charWidths[bidiUtil.AN] = bidiCharWidth;
        this.charWidths[bidiUtil.R_H] = useragent.isChrome ? bidiCharWidth : bidiCharWidth * 0.45;
        this.charWidths[bidiUtil.B] = 0;

        this.currentRow = null;
    };

    this.getShowInvisibles = function() {
        return this.showInvisibles;
    };

    this.setShowInvisibles = function(showInvisibles) {
        this.showInvisibles = showInvisibles;
        this.currentRow = null;
    };

    this.setEolChar = function(eolChar) {
        this.EOL = eolChar;
    };

    this.setTextDir = function(isRtlDir) {
        this.isRtlDir = isRtlDir;
    };
    this.getPosLeft = function(col) {
        col -= this.wrapIndent;
        var visualIdx = bidiUtil.getVisualFromLogicalIdx(col > 0 ? col - 1 : 0, this.bidiMap),
            levels = this.bidiMap.bidiLevels, left = 0;

        if (col === 0 && levels[visualIdx] % 2 !== 0)
            visualIdx++;

        for (var i = 0; i < visualIdx; i++) {
            left += this.charWidths[levels[i]];
        }

        if (col !== 0 && levels[visualIdx] % 2 === 0)
            left += this.charWidths[levels[visualIdx]];

        if (this.wrapIndent)
            left += this.wrapIndent * this.charWidths[bidiUtil.L];

        return left;
    };
    this.getSelections = function(startCol, endCol) {
        var map = this.bidiMap, levels = map.bidiLevels, level, offset = this.wrapIndent * this.charWidths[bidiUtil.L], selections = [],
            selColMin = Math.min(startCol, endCol) - this.wrapIndent, selColMax = Math.max(startCol, endCol) - this.wrapIndent,
                isSelected = false, isSelectedPrev = false, selectionStart = 0;

        for (var logIdx, visIdx = 0; visIdx < levels.length; visIdx++) {
            logIdx = map.logicalFromVisual[visIdx];
            level = levels[visIdx];
            isSelected = (logIdx >= selColMin) && (logIdx < selColMax);
            if (isSelected && !isSelectedPrev) {
                selectionStart = offset;
            } else if (!isSelected && isSelectedPrev) {
                selections.push({left: selectionStart, width: offset - selectionStart});
            }
            offset += this.charWidths[level];
            isSelectedPrev = isSelected;
        }

        if (isSelected && (visIdx === levels.length)) {
            selections.push({left: selectionStart, width: offset - selectionStart});
        }

        return selections;
    };
    this.offsetToCol = function(posX) {
        var logicalIdx = 0, posX = Math.max(posX, 0),
            offset = 0, visualIdx = 0, levels = this.bidiMap.bidiLevels,
                charWidth = this.charWidths[levels[visualIdx]];

        if (this.wrapIndent) {
            posX -= this.wrapIndent * this.charWidths[bidiUtil.L];
        }

        while(posX > offset + charWidth/2) {
            offset += charWidth;
            if(visualIdx === levels.length - 1) {
                charWidth = 0;
                break;
            }
            charWidth = this.charWidths[levels[++visualIdx]];
        }

        if (visualIdx > 0 && (levels[visualIdx - 1] % 2 !== 0) && (levels[visualIdx] % 2 === 0)){
            if(posX < offset)
                visualIdx--;
            logicalIdx = this.bidiMap.logicalFromVisual[visualIdx];

        } else if (visualIdx > 0 && (levels[visualIdx - 1] % 2 === 0) && (levels[visualIdx] % 2 !== 0)){
            logicalIdx = 1 + ((posX > offset) ? this.bidiMap.logicalFromVisual[visualIdx]
                    : this.bidiMap.logicalFromVisual[visualIdx - 1]);

        } else if ((this.isRtlDir && visualIdx === levels.length - 1 && charWidth === 0 && (levels[visualIdx - 1] % 2 === 0))
                || (!this.isRtlDir && visualIdx === 0 && (levels[visualIdx] % 2 !== 0))){
            logicalIdx = 1 + this.bidiMap.logicalFromVisual[visualIdx];
        } else {
            if (visualIdx > 0 && (levels[visualIdx - 1] % 2 !== 0) && charWidth !== 0)
                visualIdx--;
            logicalIdx = this.bidiMap.logicalFromVisual[visualIdx];
        }

        return (logicalIdx + this.wrapIndent);
    };

}).call(BidiHandler.prototype);

exports.BidiHandler = BidiHandler;
});

ace.define("ace/range",["require","exports","module"], function(acequire, exports, module) {
"use strict";
var comparePoints = function(p1, p2) {
    return p1.row - p2.row || p1.column - p2.column;
};
var Range = function(startRow, startColumn, endRow, endColumn) {
    this.start = {
        row: startRow,
        column: startColumn
    };

    this.end = {
        row: endRow,
        column: endColumn
    };
};

(function() {
    this.isEqual = function(range) {
        return this.start.row === range.start.row &&
            this.end.row === range.end.row &&
            this.start.column === range.start.column &&
            this.end.column === range.end.column;
    };
    this.toString = function() {
        return ("Range: [" + this.start.row + "/" + this.start.column +
            "] -> [" + this.end.row + "/" + this.end.column + "]");
    };

    this.contains = function(row, column) {
        return this.compare(row, column) == 0;
    };
    this.compareRange = function(range) {
        var cmp,
            end = range.end,
            start = range.start;

        cmp = this.compare(end.row, end.column);
        if (cmp == 1) {
            cmp = this.compare(start.row, start.column);
            if (cmp == 1) {
                return 2;
            } else if (cmp == 0) {
                return 1;
            } else {
                return 0;
            }
        } else if (cmp == -1) {
            return -2;
        } else {
            cmp = this.compare(start.row, start.column);
            if (cmp == -1) {
                return -1;
            } else if (cmp == 1) {
                return 42;
            } else {
                return 0;
            }
        }
    };
    this.comparePoint = function(p) {
        return this.compare(p.row, p.column);
    };
    this.containsRange = function(range) {
        return this.comparePoint(range.start) == 0 && this.comparePoint(range.end) == 0;
    };
    this.intersects = function(range) {
        var cmp = this.compareRange(range);
        return (cmp == -1 || cmp == 0 || cmp == 1);
    };
    this.isEnd = function(row, column) {
        return this.end.row == row && this.end.column == column;
    };
    this.isStart = function(row, column) {
        return this.start.row == row && this.start.column == column;
    };
    this.setStart = function(row, column) {
        if (typeof row == "object") {
            this.start.column = row.column;
            this.start.row = row.row;
        } else {
            this.start.row = row;
            this.start.column = column;
        }
    };
    this.setEnd = function(row, column) {
        if (typeof row == "object") {
            this.end.column = row.column;
            this.end.row = row.row;
        } else {
            this.end.row = row;
            this.end.column = column;
        }
    };
    this.inside = function(row, column) {
        if (this.compare(row, column) == 0) {
            if (this.isEnd(row, column) || this.isStart(row, column)) {
                return false;
            } else {
                return true;
            }
        }
        return false;
    };
    this.insideStart = function(row, column) {
        if (this.compare(row, column) == 0) {
            if (this.isEnd(row, column)) {
                return false;
            } else {
                return true;
            }
        }
        return false;
    };
    this.insideEnd = function(row, column) {
        if (this.compare(row, column) == 0) {
            if (this.isStart(row, column)) {
                return false;
            } else {
                return true;
            }
        }
        return false;
    };
    this.compare = function(row, column) {
        if (!this.isMultiLine()) {
            if (row === this.start.row) {
                return column < this.start.column ? -1 : (column > this.end.column ? 1 : 0);
            }
        }

        if (row < this.start.row)
            return -1;

        if (row > this.end.row)
            return 1;

        if (this.start.row === row)
            return column >= this.start.column ? 0 : -1;

        if (this.end.row === row)
            return column <= this.end.column ? 0 : 1;

        return 0;
    };
    this.compareStart = function(row, column) {
        if (this.start.row == row && this.start.column == column) {
            return -1;
        } else {
            return this.compare(row, column);
        }
    };
    this.compareEnd = function(row, column) {
        if (this.end.row == row && this.end.column == column) {
            return 1;
        } else {
            return this.compare(row, column);
        }
    };
    this.compareInside = function(row, column) {
        if (this.end.row == row && this.end.column == column) {
            return 1;
        } else if (this.start.row == row && this.start.column == column) {
            return -1;
        } else {
            return this.compare(row, column);
        }
    };
    this.clipRows = function(firstRow, lastRow) {
        if (this.end.row > lastRow)
            var end = {row: lastRow + 1, column: 0};
        else if (this.end.row < firstRow)
            var end = {row: firstRow, column: 0};

        if (this.start.row > lastRow)
            var start = {row: lastRow + 1, column: 0};
        else if (this.start.row < firstRow)
            var start = {row: firstRow, column: 0};

        return Range.fromPoints(start || this.start, end || this.end);
    };
    this.extend = function(row, column) {
        var cmp = this.compare(row, column);

        if (cmp == 0)
            return this;
        else if (cmp == -1)
            var start = {row: row, column: column};
        else
            var end = {row: row, column: column};

        return Range.fromPoints(start || this.start, end || this.end);
    };

    this.isEmpty = function() {
        return (this.start.row === this.end.row && this.start.column === this.end.column);
    };
    this.isMultiLine = function() {
        return (this.start.row !== this.end.row);
    };
    this.clone = function() {
        return Range.fromPoints(this.start, this.end);
    };
    this.collapseRows = function() {
        if (this.end.column == 0)
            return new Range(this.start.row, 0, Math.max(this.start.row, this.end.row-1), 0);
        else
            return new Range(this.start.row, 0, this.end.row, 0);
    };
    this.toScreenRange = function(session) {
        var screenPosStart = session.documentToScreenPosition(this.start);
        var screenPosEnd = session.documentToScreenPosition(this.end);

        return new Range(
            screenPosStart.row, screenPosStart.column,
            screenPosEnd.row, screenPosEnd.column
        );
    };
    this.moveBy = function(row, column) {
        this.start.row += row;
        this.start.column += column;
        this.end.row += row;
        this.end.column += column;
    };

}).call(Range.prototype);
Range.fromPoints = function(start, end) {
    return new Range(start.row, start.column, end.row, end.column);
};
Range.comparePoints = comparePoints;

Range.comparePoints = function(p1, p2) {
    return p1.row - p2.row || p1.column - p2.column;
};


exports.Range = Range;
});

ace.define("ace/selection",["require","exports","module","ace/lib/oop","ace/lib/lang","ace/lib/event_emitter","ace/range"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var lang = acequire("./lib/lang");
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var Range = acequire("./range").Range;
var Selection = function(session) {
    this.session = session;
    this.doc = session.getDocument();

    this.clearSelection();
    this.lead = this.selectionLead = this.doc.createAnchor(0, 0);
    this.anchor = this.selectionAnchor = this.doc.createAnchor(0, 0);

    var self = this;
    this.lead.on("change", function(e) {
        self._emit("changeCursor");
        if (!self.$isEmpty)
            self._emit("changeSelection");
        if (!self.$keepDesiredColumnOnChange && e.old.column != e.value.column)
            self.$desiredColumn = null;
    });

    this.selectionAnchor.on("change", function() {
        if (!self.$isEmpty)
            self._emit("changeSelection");
    });
};

(function() {

    oop.implement(this, EventEmitter);
    this.isEmpty = function() {
        return (this.$isEmpty || (
            this.anchor.row == this.lead.row &&
            this.anchor.column == this.lead.column
        ));
    };
    this.isMultiLine = function() {
        if (this.isEmpty()) {
            return false;
        }

        return this.getRange().isMultiLine();
    };
    this.getCursor = function() {
        return this.lead.getPosition();
    };
    this.setSelectionAnchor = function(row, column) {
        this.anchor.setPosition(row, column);

        if (this.$isEmpty) {
            this.$isEmpty = false;
            this._emit("changeSelection");
        }
    };
    this.getSelectionAnchor = function() {
        if (this.$isEmpty)
            return this.getSelectionLead();
        else
            return this.anchor.getPosition();
    };
    this.getSelectionLead = function() {
        return this.lead.getPosition();
    };
    this.shiftSelection = function(columns) {
        if (this.$isEmpty) {
            this.moveCursorTo(this.lead.row, this.lead.column + columns);
            return;
        }

        var anchor = this.getSelectionAnchor();
        var lead = this.getSelectionLead();

        var isBackwards = this.isBackwards();

        if (!isBackwards || anchor.column !== 0)
            this.setSelectionAnchor(anchor.row, anchor.column + columns);

        if (isBackwards || lead.column !== 0) {
            this.$moveSelection(function() {
                this.moveCursorTo(lead.row, lead.column + columns);
            });
        }
    };
    this.isBackwards = function() {
        var anchor = this.anchor;
        var lead = this.lead;
        return (anchor.row > lead.row || (anchor.row == lead.row && anchor.column > lead.column));
    };
    this.getRange = function() {
        var anchor = this.anchor;
        var lead = this.lead;

        if (this.isEmpty())
            return Range.fromPoints(lead, lead);

        if (this.isBackwards()) {
            return Range.fromPoints(lead, anchor);
        }
        else {
            return Range.fromPoints(anchor, lead);
        }
    };
    this.clearSelection = function() {
        if (!this.$isEmpty) {
            this.$isEmpty = true;
            this._emit("changeSelection");
        }
    };
    this.selectAll = function() {
        var lastRow = this.doc.getLength() - 1;
        this.setSelectionAnchor(0, 0);
        this.moveCursorTo(lastRow, this.doc.getLine(lastRow).length);
    };
    this.setRange =
    this.setSelectionRange = function(range, reverse) {
        if (reverse) {
            this.setSelectionAnchor(range.end.row, range.end.column);
            this.selectTo(range.start.row, range.start.column);
        } else {
            this.setSelectionAnchor(range.start.row, range.start.column);
            this.selectTo(range.end.row, range.end.column);
        }
        if (this.getRange().isEmpty())
            this.$isEmpty = true;
        this.$desiredColumn = null;
    };

    this.$moveSelection = function(mover) {
        var lead = this.lead;
        if (this.$isEmpty)
            this.setSelectionAnchor(lead.row, lead.column);

        mover.call(this);
    };
    this.selectTo = function(row, column) {
        this.$moveSelection(function() {
            this.moveCursorTo(row, column);
        });
    };
    this.selectToPosition = function(pos) {
        this.$moveSelection(function() {
            this.moveCursorToPosition(pos);
        });
    };
    this.moveTo = function(row, column) {
        this.clearSelection();
        this.moveCursorTo(row, column);
    };
    this.moveToPosition = function(pos) {
        this.clearSelection();
        this.moveCursorToPosition(pos);
    };
    this.selectUp = function() {
        this.$moveSelection(this.moveCursorUp);
    };
    this.selectDown = function() {
        this.$moveSelection(this.moveCursorDown);
    };
    this.selectRight = function() {
        this.$moveSelection(this.moveCursorRight);
    };
    this.selectLeft = function() {
        this.$moveSelection(this.moveCursorLeft);
    };
    this.selectLineStart = function() {
        this.$moveSelection(this.moveCursorLineStart);
    };
    this.selectLineEnd = function() {
        this.$moveSelection(this.moveCursorLineEnd);
    };
    this.selectFileEnd = function() {
        this.$moveSelection(this.moveCursorFileEnd);
    };
    this.selectFileStart = function() {
        this.$moveSelection(this.moveCursorFileStart);
    };
    this.selectWordRight = function() {
        this.$moveSelection(this.moveCursorWordRight);
    };
    this.selectWordLeft = function() {
        this.$moveSelection(this.moveCursorWordLeft);
    };
    this.getWordRange = function(row, column) {
        if (typeof column == "undefined") {
            var cursor = row || this.lead;
            row = cursor.row;
            column = cursor.column;
        }
        return this.session.getWordRange(row, column);
    };
    this.selectWord = function() {
        this.setSelectionRange(this.getWordRange());
    };
    this.selectAWord = function() {
        var cursor = this.getCursor();
        var range = this.session.getAWordRange(cursor.row, cursor.column);
        this.setSelectionRange(range);
    };

    this.getLineRange = function(row, excludeLastChar) {
        var rowStart = typeof row == "number" ? row : this.lead.row;
        var rowEnd;

        var foldLine = this.session.getFoldLine(rowStart);
        if (foldLine) {
            rowStart = foldLine.start.row;
            rowEnd = foldLine.end.row;
        } else {
            rowEnd = rowStart;
        }
        if (excludeLastChar === true)
            return new Range(rowStart, 0, rowEnd, this.session.getLine(rowEnd).length);
        else
            return new Range(rowStart, 0, rowEnd + 1, 0);
    };
    this.selectLine = function() {
        this.setSelectionRange(this.getLineRange());
    };
    this.moveCursorUp = function() {
        this.moveCursorBy(-1, 0);
    };
    this.moveCursorDown = function() {
        this.moveCursorBy(1, 0);
    };
    this.wouldMoveIntoSoftTab = function(cursor, tabSize, direction) {
        var start = cursor.column;
        var end = cursor.column + tabSize;

        if (direction < 0) {
            start = cursor.column - tabSize;
            end = cursor.column;
        }
        return this.session.isTabStop(cursor) && this.doc.getLine(cursor.row).slice(start, end).split(" ").length-1 == tabSize;
    };
    this.moveCursorLeft = function() {
        var cursor = this.lead.getPosition(),
            fold;

        if (fold = this.session.getFoldAt(cursor.row, cursor.column, -1)) {
            this.moveCursorTo(fold.start.row, fold.start.column);
        } else if (cursor.column === 0) {
            if (cursor.row > 0) {
                this.moveCursorTo(cursor.row - 1, this.doc.getLine(cursor.row - 1).length);
            }
        }
        else {
            var tabSize = this.session.getTabSize();
            if (this.wouldMoveIntoSoftTab(cursor, tabSize, -1) && !this.session.getNavigateWithinSoftTabs()) {
                this.moveCursorBy(0, -tabSize);
            } else {
                this.moveCursorBy(0, -1);
            }
        }
    };
    this.moveCursorRight = function() {
        var cursor = this.lead.getPosition(),
            fold;
        if (fold = this.session.getFoldAt(cursor.row, cursor.column, 1)) {
            this.moveCursorTo(fold.end.row, fold.end.column);
        }
        else if (this.lead.column == this.doc.getLine(this.lead.row).length) {
            if (this.lead.row < this.doc.getLength() - 1) {
                this.moveCursorTo(this.lead.row + 1, 0);
            }
        }
        else {
            var tabSize = this.session.getTabSize();
            var cursor = this.lead;
            if (this.wouldMoveIntoSoftTab(cursor, tabSize, 1) && !this.session.getNavigateWithinSoftTabs()) {
                this.moveCursorBy(0, tabSize);
            } else {
                this.moveCursorBy(0, 1);
            }
        }
    };
    this.moveCursorLineStart = function() {
        var row = this.lead.row;
        var column = this.lead.column;
        var screenRow = this.session.documentToScreenRow(row, column);
        var firstColumnPosition = this.session.screenToDocumentPosition(screenRow, 0);
        var beforeCursor = this.session.getDisplayLine(
            row, null, firstColumnPosition.row,
            firstColumnPosition.column
        );

        var leadingSpace = beforeCursor.match(/^\s*/);
        if (leadingSpace[0].length != column && !this.session.$useEmacsStyleLineStart)
            firstColumnPosition.column += leadingSpace[0].length;
        this.moveCursorToPosition(firstColumnPosition);
    };
    this.moveCursorLineEnd = function() {
        var lead = this.lead;
        var lineEnd = this.session.getDocumentLastRowColumnPosition(lead.row, lead.column);
        if (this.lead.column == lineEnd.column) {
            var line = this.session.getLine(lineEnd.row);
            if (lineEnd.column == line.length) {
                var textEnd = line.search(/\s+$/);
                if (textEnd > 0)
                    lineEnd.column = textEnd;
            }
        }

        this.moveCursorTo(lineEnd.row, lineEnd.column);
    };
    this.moveCursorFileEnd = function() {
        var row = this.doc.getLength() - 1;
        var column = this.doc.getLine(row).length;
        this.moveCursorTo(row, column);
    };
    this.moveCursorFileStart = function() {
        this.moveCursorTo(0, 0);
    };
    this.moveCursorLongWordRight = function() {
        var row = this.lead.row;
        var column = this.lead.column;
        var line = this.doc.getLine(row);
        var rightOfCursor = line.substring(column);

        var match;
        this.session.nonTokenRe.lastIndex = 0;
        this.session.tokenRe.lastIndex = 0;
        var fold = this.session.getFoldAt(row, column, 1);
        if (fold) {
            this.moveCursorTo(fold.end.row, fold.end.column);
            return;
        }
        if (match = this.session.nonTokenRe.exec(rightOfCursor)) {
            column += this.session.nonTokenRe.lastIndex;
            this.session.nonTokenRe.lastIndex = 0;
            rightOfCursor = line.substring(column);
        }
        if (column >= line.length) {
            this.moveCursorTo(row, line.length);
            this.moveCursorRight();
            if (row < this.doc.getLength() - 1)
                this.moveCursorWordRight();
            return;
        }
        if (match = this.session.tokenRe.exec(rightOfCursor)) {
            column += this.session.tokenRe.lastIndex;
            this.session.tokenRe.lastIndex = 0;
        }

        this.moveCursorTo(row, column);
    };
    this.moveCursorLongWordLeft = function() {
        var row = this.lead.row;
        var column = this.lead.column;
        var fold;
        if (fold = this.session.getFoldAt(row, column, -1)) {
            this.moveCursorTo(fold.start.row, fold.start.column);
            return;
        }

        var str = this.session.getFoldStringAt(row, column, -1);
        if (str == null) {
            str = this.doc.getLine(row).substring(0, column);
        }

        var leftOfCursor = lang.stringReverse(str);
        var match;
        this.session.nonTokenRe.lastIndex = 0;
        this.session.tokenRe.lastIndex = 0;
        if (match = this.session.nonTokenRe.exec(leftOfCursor)) {
            column -= this.session.nonTokenRe.lastIndex;
            leftOfCursor = leftOfCursor.slice(this.session.nonTokenRe.lastIndex);
            this.session.nonTokenRe.lastIndex = 0;
        }
        if (column <= 0) {
            this.moveCursorTo(row, 0);
            this.moveCursorLeft();
            if (row > 0)
                this.moveCursorWordLeft();
            return;
        }
        if (match = this.session.tokenRe.exec(leftOfCursor)) {
            column -= this.session.tokenRe.lastIndex;
            this.session.tokenRe.lastIndex = 0;
        }

        this.moveCursorTo(row, column);
    };

    this.$shortWordEndIndex = function(rightOfCursor) {
        var match, index = 0, ch;
        var whitespaceRe = /\s/;
        var tokenRe = this.session.tokenRe;

        tokenRe.lastIndex = 0;
        if (match = this.session.tokenRe.exec(rightOfCursor)) {
            index = this.session.tokenRe.lastIndex;
        } else {
            while ((ch = rightOfCursor[index]) && whitespaceRe.test(ch))
                index ++;

            if (index < 1) {
                tokenRe.lastIndex = 0;
                 while ((ch = rightOfCursor[index]) && !tokenRe.test(ch)) {
                    tokenRe.lastIndex = 0;
                    index ++;
                    if (whitespaceRe.test(ch)) {
                        if (index > 2) {
                            index--;
                            break;
                        } else {
                            while ((ch = rightOfCursor[index]) && whitespaceRe.test(ch))
                                index ++;
                            if (index > 2)
                                break;
                        }
                    }
                }
            }
        }
        tokenRe.lastIndex = 0;

        return index;
    };

    this.moveCursorShortWordRight = function() {
        var row = this.lead.row;
        var column = this.lead.column;
        var line = this.doc.getLine(row);
        var rightOfCursor = line.substring(column);

        var fold = this.session.getFoldAt(row, column, 1);
        if (fold)
            return this.moveCursorTo(fold.end.row, fold.end.column);

        if (column == line.length) {
            var l = this.doc.getLength();
            do {
                row++;
                rightOfCursor = this.doc.getLine(row);
            } while (row < l && /^\s*$/.test(rightOfCursor));

            if (!/^\s+/.test(rightOfCursor))
                rightOfCursor = "";
            column = 0;
        }

        var index = this.$shortWordEndIndex(rightOfCursor);

        this.moveCursorTo(row, column + index);
    };

    this.moveCursorShortWordLeft = function() {
        var row = this.lead.row;
        var column = this.lead.column;

        var fold;
        if (fold = this.session.getFoldAt(row, column, -1))
            return this.moveCursorTo(fold.start.row, fold.start.column);

        var line = this.session.getLine(row).substring(0, column);
        if (column === 0) {
            do {
                row--;
                line = this.doc.getLine(row);
            } while (row > 0 && /^\s*$/.test(line));

            column = line.length;
            if (!/\s+$/.test(line))
                line = "";
        }

        var leftOfCursor = lang.stringReverse(line);
        var index = this.$shortWordEndIndex(leftOfCursor);

        return this.moveCursorTo(row, column - index);
    };

    this.moveCursorWordRight = function() {
        if (this.session.$selectLongWords)
            this.moveCursorLongWordRight();
        else
            this.moveCursorShortWordRight();
    };

    this.moveCursorWordLeft = function() {
        if (this.session.$selectLongWords)
            this.moveCursorLongWordLeft();
        else
            this.moveCursorShortWordLeft();
    };
    this.moveCursorBy = function(rows, chars) {
        var screenPos = this.session.documentToScreenPosition(
            this.lead.row,
            this.lead.column
        );

        var offsetX;

        if (chars === 0) {
            if (rows !== 0) {
                if (this.session.$bidiHandler.isBidiRow(screenPos.row, this.lead.row)) {
                    offsetX = this.session.$bidiHandler.getPosLeft(screenPos.column);
                    screenPos.column = Math.round(offsetX / this.session.$bidiHandler.charWidths[0]);
                } else {
                    offsetX = screenPos.column * this.session.$bidiHandler.charWidths[0];
                }
            }

            if (this.$desiredColumn)
                screenPos.column = this.$desiredColumn;
            else
                this.$desiredColumn = screenPos.column;
        }

        var docPos = this.session.screenToDocumentPosition(screenPos.row + rows, screenPos.column, offsetX);
        
        if (rows !== 0 && chars === 0 && docPos.row === this.lead.row && docPos.column === this.lead.column) {
            if (this.session.lineWidgets && this.session.lineWidgets[docPos.row]) {
                if (docPos.row > 0 || rows > 0)
                    docPos.row++;
            }
        }
        this.moveCursorTo(docPos.row, docPos.column + chars, chars === 0);
    };
    this.moveCursorToPosition = function(position) {
        this.moveCursorTo(position.row, position.column);
    };
    this.moveCursorTo = function(row, column, keepDesiredColumn) {
        var fold = this.session.getFoldAt(row, column, 1);
        if (fold) {
            row = fold.start.row;
            column = fold.start.column;
        }

        this.$keepDesiredColumnOnChange = true;
        var line = this.session.getLine(row);
        if (/[\uDC00-\uDFFF]/.test(line.charAt(column)) && line.charAt(column - 1)) {
            if (this.lead.row == row && this.lead.column == column + 1)
                column = column - 1;
            else
                column = column + 1;
        }
        this.lead.setPosition(row, column);
        this.$keepDesiredColumnOnChange = false;

        if (!keepDesiredColumn)
            this.$desiredColumn = null;
    };
    this.moveCursorToScreen = function(row, column, keepDesiredColumn) {
        var pos = this.session.screenToDocumentPosition(row, column);
        this.moveCursorTo(pos.row, pos.column, keepDesiredColumn);
    };
    this.detach = function() {
        this.lead.detach();
        this.anchor.detach();
        this.session = this.doc = null;
    };

    this.fromOrientedRange = function(range) {
        this.setSelectionRange(range, range.cursor == range.start);
        this.$desiredColumn = range.desiredColumn || this.$desiredColumn;
    };

    this.toOrientedRange = function(range) {
        var r = this.getRange();
        if (range) {
            range.start.column = r.start.column;
            range.start.row = r.start.row;
            range.end.column = r.end.column;
            range.end.row = r.end.row;
        } else {
            range = r;
        }

        range.cursor = this.isBackwards() ? range.start : range.end;
        range.desiredColumn = this.$desiredColumn;
        return range;
    };
    this.getRangeOfMovements = function(func) {
        var start = this.getCursor();
        try {
            func(this);
            var end = this.getCursor();
            return Range.fromPoints(start,end);
        } catch(e) {
            return Range.fromPoints(start,start);
        } finally {
            this.moveCursorToPosition(start);
        }
    };

    this.toJSON = function() {
        if (this.rangeCount) {
            var data = this.ranges.map(function(r) {
                var r1 = r.clone();
                r1.isBackwards = r.cursor == r.start;
                return r1;
            });
        } else {
            var data = this.getRange();
            data.isBackwards = this.isBackwards();
        }
        return data;
    };

    this.fromJSON = function(data) {
        if (data.start == undefined) {
            if (this.rangeList) {
                this.toSingleRange(data[0]);
                for (var i = data.length; i--; ) {
                    var r = Range.fromPoints(data[i].start, data[i].end);
                    if (data[i].isBackwards)
                        r.cursor = r.start;
                    this.addRange(r, true);
                }
                return;
            } else
                data = data[0];
        }
        if (this.rangeList)
            this.toSingleRange(data);
        this.setSelectionRange(data, data.isBackwards);
    };

    this.isEqual = function(data) {
        if ((data.length || this.rangeCount) && data.length != this.rangeCount)
            return false;
        if (!data.length || !this.ranges)
            return this.getRange().isEqual(data);

        for (var i = this.ranges.length; i--; ) {
            if (!this.ranges[i].isEqual(data[i]))
                return false;
        }
        return true;
    };

}).call(Selection.prototype);

exports.Selection = Selection;
});

ace.define("ace/tokenizer",["require","exports","module","ace/config"], function(acequire, exports, module) {
"use strict";

var config = acequire("./config");
var MAX_TOKEN_COUNT = 2000;
var Tokenizer = function(rules) {
    this.states = rules;

    this.regExps = {};
    this.matchMappings = {};
    for (var key in this.states) {
        var state = this.states[key];
        var ruleRegExps = [];
        var matchTotal = 0;
        var mapping = this.matchMappings[key] = {defaultToken: "text"};
        var flag = "g";

        var splitterRurles = [];
        for (var i = 0; i < state.length; i++) {
            var rule = state[i];
            if (rule.defaultToken)
                mapping.defaultToken = rule.defaultToken;
            if (rule.caseInsensitive)
                flag = "gi";
            if (rule.regex == null)
                continue;

            if (rule.regex instanceof RegExp)
                rule.regex = rule.regex.toString().slice(1, -1);
            var adjustedregex = rule.regex;
            var matchcount = new RegExp("(?:(" + adjustedregex + ")|(.))").exec("a").length - 2;
            if (Array.isArray(rule.token)) {
                if (rule.token.length == 1 || matchcount == 1) {
                    rule.token = rule.token[0];
                } else if (matchcount - 1 != rule.token.length) {
                    this.reportError("number of classes and regexp groups doesn't match", { 
                        rule: rule,
                        groupCount: matchcount - 1
                    });
                    rule.token = rule.token[0];
                } else {
                    rule.tokenArray = rule.token;
                    rule.token = null;
                    rule.onMatch = this.$arrayTokens;
                }
            } else if (typeof rule.token == "function" && !rule.onMatch) {
                if (matchcount > 1)
                    rule.onMatch = this.$applyToken;
                else
                    rule.onMatch = rule.token;
            }

            if (matchcount > 1) {
                if (/\\\d/.test(rule.regex)) {
                    adjustedregex = rule.regex.replace(/\\([0-9]+)/g, function(match, digit) {
                        return "\\" + (parseInt(digit, 10) + matchTotal + 1);
                    });
                } else {
                    matchcount = 1;
                    adjustedregex = this.removeCapturingGroups(rule.regex);
                }
                if (!rule.splitRegex && typeof rule.token != "string")
                    splitterRurles.push(rule); // flag will be known only at the very end
            }

            mapping[matchTotal] = i;
            matchTotal += matchcount;

            ruleRegExps.push(adjustedregex);
            if (!rule.onMatch)
                rule.onMatch = null;
        }
        
        if (!ruleRegExps.length) {
            mapping[0] = 0;
            ruleRegExps.push("$");
        }
        
        splitterRurles.forEach(function(rule) {
            rule.splitRegex = this.createSplitterRegexp(rule.regex, flag);
        }, this);

        this.regExps[key] = new RegExp("(" + ruleRegExps.join(")|(") + ")|($)", flag);
    }
};

(function() {
    this.$setMaxTokenCount = function(m) {
        MAX_TOKEN_COUNT = m | 0;
    };
    
    this.$applyToken = function(str) {
        var values = this.splitRegex.exec(str).slice(1);
        var types = this.token.apply(this, values);
        if (typeof types === "string")
            return [{type: types, value: str}];

        var tokens = [];
        for (var i = 0, l = types.length; i < l; i++) {
            if (values[i])
                tokens[tokens.length] = {
                    type: types[i],
                    value: values[i]
                };
        }
        return tokens;
    };

    this.$arrayTokens = function(str) {
        if (!str)
            return [];
        var values = this.splitRegex.exec(str);
        if (!values)
            return "text";
        var tokens = [];
        var types = this.tokenArray;
        for (var i = 0, l = types.length; i < l; i++) {
            if (values[i + 1])
                tokens[tokens.length] = {
                    type: types[i],
                    value: values[i + 1]
                };
        }
        return tokens;
    };

    this.removeCapturingGroups = function(src) {
        var r = src.replace(
            /\[(?:\\.|[^\]])*?\]|\\.|\(\?[:=!]|(\()/g,
            function(x, y) {return y ? "(?:" : x;}
        );
        return r;
    };

    this.createSplitterRegexp = function(src, flag) {
        if (src.indexOf("(?=") != -1) {
            var stack = 0;
            var inChClass = false;
            var lastCapture = {};
            src.replace(/(\\.)|(\((?:\?[=!])?)|(\))|([\[\]])/g, function(
                m, esc, parenOpen, parenClose, square, index
            ) {
                if (inChClass) {
                    inChClass = square != "]";
                } else if (square) {
                    inChClass = true;
                } else if (parenClose) {
                    if (stack == lastCapture.stack) {
                        lastCapture.end = index+1;
                        lastCapture.stack = -1;
                    }
                    stack--;
                } else if (parenOpen) {
                    stack++;
                    if (parenOpen.length != 1) {
                        lastCapture.stack = stack;
                        lastCapture.start = index;
                    }
                }
                return m;
            });

            if (lastCapture.end != null && /^\)*$/.test(src.substr(lastCapture.end)))
                src = src.substring(0, lastCapture.start) + src.substr(lastCapture.end);
        }
        if (src.charAt(0) != "^") src = "^" + src;
        if (src.charAt(src.length - 1) != "$") src += "$";
        
        return new RegExp(src, (flag||"").replace("g", ""));
    };
    this.getLineTokens = function(line, startState) {
        if (startState && typeof startState != "string") {
            var stack = startState.slice(0);
            startState = stack[0];
            if (startState === "#tmp") {
                stack.shift();
                startState = stack.shift();
            }
        } else
            var stack = [];

        var currentState = startState || "start";
        var state = this.states[currentState];
        if (!state) {
            currentState = "start";
            state = this.states[currentState];
        }
        var mapping = this.matchMappings[currentState];
        var re = this.regExps[currentState];
        re.lastIndex = 0;

        var match, tokens = [];
        var lastIndex = 0;
        var matchAttempts = 0;

        var token = {type: null, value: ""};

        while (match = re.exec(line)) {
            var type = mapping.defaultToken;
            var rule = null;
            var value = match[0];
            var index = re.lastIndex;

            if (index - value.length > lastIndex) {
                var skipped = line.substring(lastIndex, index - value.length);
                if (token.type == type) {
                    token.value += skipped;
                } else {
                    if (token.type)
                        tokens.push(token);
                    token = {type: type, value: skipped};
                }
            }

            for (var i = 0; i < match.length-2; i++) {
                if (match[i + 1] === undefined)
                    continue;

                rule = state[mapping[i]];

                if (rule.onMatch)
                    type = rule.onMatch(value, currentState, stack, line);
                else
                    type = rule.token;

                if (rule.next) {
                    if (typeof rule.next == "string") {
                        currentState = rule.next;
                    } else {
                        currentState = rule.next(currentState, stack);
                    }
                    
                    state = this.states[currentState];
                    if (!state) {
                        this.reportError("state doesn't exist", currentState);
                        currentState = "start";
                        state = this.states[currentState];
                    }
                    mapping = this.matchMappings[currentState];
                    lastIndex = index;
                    re = this.regExps[currentState];
                    re.lastIndex = index;
                }
                if (rule.consumeLineEnd)
                    lastIndex = index;
                break;
            }

            if (value) {
                if (typeof type === "string") {
                    if ((!rule || rule.merge !== false) && token.type === type) {
                        token.value += value;
                    } else {
                        if (token.type)
                            tokens.push(token);
                        token = {type: type, value: value};
                    }
                } else if (type) {
                    if (token.type)
                        tokens.push(token);
                    token = {type: null, value: ""};
                    for (var i = 0; i < type.length; i++)
                        tokens.push(type[i]);
                }
            }

            if (lastIndex == line.length)
                break;

            lastIndex = index;

            if (matchAttempts++ > MAX_TOKEN_COUNT) {
                if (matchAttempts > 2 * line.length) {
                    this.reportError("infinite loop with in ace tokenizer", {
                        startState: startState,
                        line: line
                    });
                }
                while (lastIndex < line.length) {
                    if (token.type)
                        tokens.push(token);
                    token = {
                        value: line.substring(lastIndex, lastIndex += 2000),
                        type: "overflow"
                    };
                }
                currentState = "start";
                stack = [];
                break;
            }
        }

        if (token.type)
            tokens.push(token);
        
        if (stack.length > 1) {
            if (stack[0] !== currentState)
                stack.unshift("#tmp", currentState);
        }
        return {
            tokens : tokens,
            state : stack.length ? stack : currentState
        };
    };
    
    this.reportError = config.reportError;
    
}).call(Tokenizer.prototype);

exports.Tokenizer = Tokenizer;
});

ace.define("ace/mode/text_highlight_rules",["require","exports","module","ace/lib/lang"], function(acequire, exports, module) {
"use strict";

var lang = acequire("../lib/lang");

var TextHighlightRules = function() {

    this.$rules = {
        "start" : [{
            token : "empty_line",
            regex : '^$'
        }, {
            defaultToken : "text"
        }]
    };
};

(function() {

    this.addRules = function(rules, prefix) {
        if (!prefix) {
            for (var key in rules)
                this.$rules[key] = rules[key];
            return;
        }
        for (var key in rules) {
            var state = rules[key];
            for (var i = 0; i < state.length; i++) {
                var rule = state[i];
                if (rule.next || rule.onMatch) {
                    if (typeof rule.next == "string") {
                        if (rule.next.indexOf(prefix) !== 0)
                            rule.next = prefix + rule.next;
                    }
                    if (rule.nextState && rule.nextState.indexOf(prefix) !== 0)
                        rule.nextState = prefix + rule.nextState;
                }
            }
            this.$rules[prefix + key] = state;
        }
    };

    this.getRules = function() {
        return this.$rules;
    };

    this.embedRules = function (HighlightRules, prefix, escapeRules, states, append) {
        var embedRules = typeof HighlightRules == "function"
            ? new HighlightRules().getRules()
            : HighlightRules;
        if (states) {
            for (var i = 0; i < states.length; i++)
                states[i] = prefix + states[i];
        } else {
            states = [];
            for (var key in embedRules)
                states.push(prefix + key);
        }

        this.addRules(embedRules, prefix);

        if (escapeRules) {
            var addRules = Array.prototype[append ? "push" : "unshift"];
            for (var i = 0; i < states.length; i++)
                addRules.apply(this.$rules[states[i]], lang.deepCopy(escapeRules));
        }

        if (!this.$embeds)
            this.$embeds = [];
        this.$embeds.push(prefix);
    };

    this.getEmbeds = function() {
        return this.$embeds;
    };

    var pushState = function(currentState, stack) {
        if (currentState != "start" || stack.length)
            stack.unshift(this.nextState, currentState);
        return this.nextState;
    };
    var popState = function(currentState, stack) {
        stack.shift();
        return stack.shift() || "start";
    };

    this.normalizeRules = function() {
        var id = 0;
        var rules = this.$rules;
        function processState(key) {
            var state = rules[key];
            state.processed = true;
            for (var i = 0; i < state.length; i++) {
                var rule = state[i];
                var toInsert = null;
                if (Array.isArray(rule)) {
                    toInsert = rule;
                    rule = {};
                }
                if (!rule.regex && rule.start) {
                    rule.regex = rule.start;
                    if (!rule.next)
                        rule.next = [];
                    rule.next.push({
                        defaultToken: rule.token
                    }, {
                        token: rule.token + ".end",
                        regex: rule.end || rule.start,
                        next: "pop"
                    });
                    rule.token = rule.token + ".start";
                    rule.push = true;
                }
                var next = rule.next || rule.push;
                if (next && Array.isArray(next)) {
                    var stateName = rule.stateName;
                    if (!stateName)  {
                        stateName = rule.token;
                        if (typeof stateName != "string")
                            stateName = stateName[0] || "";
                        if (rules[stateName])
                            stateName += id++;
                    }
                    rules[stateName] = next;
                    rule.next = stateName;
                    processState(stateName);
                } else if (next == "pop") {
                    rule.next = popState;
                }

                if (rule.push) {
                    rule.nextState = rule.next || rule.push;
                    rule.next = pushState;
                    delete rule.push;
                }

                if (rule.rules) {
                    for (var r in rule.rules) {
                        if (rules[r]) {
                            if (rules[r].push)
                                rules[r].push.apply(rules[r], rule.rules[r]);
                        } else {
                            rules[r] = rule.rules[r];
                        }
                    }
                }
                var includeName = typeof rule == "string" ? rule : rule.include;
                if (includeName) {
                    if (Array.isArray(includeName))
                        toInsert = includeName.map(function(x) { return rules[x]; });
                    else
                        toInsert = rules[includeName];
                }

                if (toInsert) {
                    var args = [i, 1].concat(toInsert);
                    if (rule.noEscape)
                        args = args.filter(function(x) {return !x.next;});
                    state.splice.apply(state, args);
                    i--;
                }
                
                if (rule.keywordMap) {
                    rule.token = this.createKeywordMapper(
                        rule.keywordMap, rule.defaultToken || "text", rule.caseInsensitive
                    );
                    delete rule.defaultToken;
                }
            }
        }
        Object.keys(rules).forEach(processState, this);
    };

    this.createKeywordMapper = function(map, defaultToken, ignoreCase, splitChar) {
        var keywords = Object.create(null);
        Object.keys(map).forEach(function(className) {
            var a = map[className];
            if (ignoreCase)
                a = a.toLowerCase();
            var list = a.split(splitChar || "|");
            for (var i = list.length; i--; )
                keywords[list[i]] = className;
        });
        if (Object.getPrototypeOf(keywords)) {
            keywords.__proto__ = null;
        }
        this.$keywordList = Object.keys(keywords);
        map = null;
        return ignoreCase
            ? function(value) {return keywords[value.toLowerCase()] || defaultToken; }
            : function(value) {return keywords[value] || defaultToken; };
    };

    this.getKeywords = function() {
        return this.$keywords;
    };

}).call(TextHighlightRules.prototype);

exports.TextHighlightRules = TextHighlightRules;
});

ace.define("ace/mode/behaviour",["require","exports","module"], function(acequire, exports, module) {
"use strict";

var Behaviour = function() {
   this.$behaviours = {};
};

(function () {

    this.add = function (name, action, callback) {
        switch (undefined) {
          case this.$behaviours:
              this.$behaviours = {};
          case this.$behaviours[name]:
              this.$behaviours[name] = {};
        }
        this.$behaviours[name][action] = callback;
    };
    
    this.addBehaviours = function (behaviours) {
        for (var key in behaviours) {
            for (var action in behaviours[key]) {
                this.add(key, action, behaviours[key][action]);
            }
        }
    };
    
    this.remove = function (name) {
        if (this.$behaviours && this.$behaviours[name]) {
            delete this.$behaviours[name];
        }
    };
    
    this.inherit = function (mode, filter) {
        if (typeof mode === "function") {
            var behaviours = new mode().getBehaviours(filter);
        } else {
            var behaviours = mode.getBehaviours(filter);
        }
        this.addBehaviours(behaviours);
    };
    
    this.getBehaviours = function (filter) {
        if (!filter) {
            return this.$behaviours;
        } else {
            var ret = {};
            for (var i = 0; i < filter.length; i++) {
                if (this.$behaviours[filter[i]]) {
                    ret[filter[i]] = this.$behaviours[filter[i]];
                }
            }
            return ret;
        }
    };

}).call(Behaviour.prototype);

exports.Behaviour = Behaviour;
});

ace.define("ace/token_iterator",["require","exports","module","ace/range"], function(acequire, exports, module) {
"use strict";

var Range = acequire("./range").Range;
var TokenIterator = function(session, initialRow, initialColumn) {
    this.$session = session;
    this.$row = initialRow;
    this.$rowTokens = session.getTokens(initialRow);

    var token = session.getTokenAt(initialRow, initialColumn);
    this.$tokenIndex = token ? token.index : -1;
};

(function() { 
    this.stepBackward = function() {
        this.$tokenIndex -= 1;
        
        while (this.$tokenIndex < 0) {
            this.$row -= 1;
            if (this.$row < 0) {
                this.$row = 0;
                return null;
            }
                
            this.$rowTokens = this.$session.getTokens(this.$row);
            this.$tokenIndex = this.$rowTokens.length - 1;
        }
            
        return this.$rowTokens[this.$tokenIndex];
    };   
    this.stepForward = function() {
        this.$tokenIndex += 1;
        var rowCount;
        while (this.$tokenIndex >= this.$rowTokens.length) {
            this.$row += 1;
            if (!rowCount)
                rowCount = this.$session.getLength();
            if (this.$row >= rowCount) {
                this.$row = rowCount - 1;
                return null;
            }

            this.$rowTokens = this.$session.getTokens(this.$row);
            this.$tokenIndex = 0;
        }
            
        return this.$rowTokens[this.$tokenIndex];
    };      
    this.getCurrentToken = function () {
        return this.$rowTokens[this.$tokenIndex];
    };      
    this.getCurrentTokenRow = function () {
        return this.$row;
    };     
    this.getCurrentTokenColumn = function() {
        var rowTokens = this.$rowTokens;
        var tokenIndex = this.$tokenIndex;
        var column = rowTokens[tokenIndex].start;
        if (column !== undefined)
            return column;
            
        column = 0;
        while (tokenIndex > 0) {
            tokenIndex -= 1;
            column += rowTokens[tokenIndex].value.length;
        }
        
        return column;  
    };
    this.getCurrentTokenPosition = function() {
        return {row: this.$row, column: this.getCurrentTokenColumn()};
    };
    this.getCurrentTokenRange = function() {
        var token = this.$rowTokens[this.$tokenIndex];
        var column = this.getCurrentTokenColumn();
        return new Range(this.$row, column, this.$row, column + token.value.length);
    };

}).call(TokenIterator.prototype);

exports.TokenIterator = TokenIterator;
});

ace.define("ace/mode/behaviour/cstyle",["require","exports","module","ace/lib/oop","ace/mode/behaviour","ace/token_iterator","ace/lib/lang"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../../lib/oop");
var Behaviour = acequire("../behaviour").Behaviour;
var TokenIterator = acequire("../../token_iterator").TokenIterator;
var lang = acequire("../../lib/lang");

var SAFE_INSERT_IN_TOKENS =
    ["text", "paren.rparen", "punctuation.operator"];
var SAFE_INSERT_BEFORE_TOKENS =
    ["text", "paren.rparen", "punctuation.operator", "comment"];

var context;
var contextCache = {};
var defaultQuotes = {'"' : '"', "'" : "'"};

var initContext = function(editor) {
    var id = -1;
    if (editor.multiSelect) {
        id = editor.selection.index;
        if (contextCache.rangeCount != editor.multiSelect.rangeCount)
            contextCache = {rangeCount: editor.multiSelect.rangeCount};
    }
    if (contextCache[id])
        return context = contextCache[id];
    context = contextCache[id] = {
        autoInsertedBrackets: 0,
        autoInsertedRow: -1,
        autoInsertedLineEnd: "",
        maybeInsertedBrackets: 0,
        maybeInsertedRow: -1,
        maybeInsertedLineStart: "",
        maybeInsertedLineEnd: ""
    };
};

var getWrapped = function(selection, selected, opening, closing) {
    var rowDiff = selection.end.row - selection.start.row;
    return {
        text: opening + selected + closing,
        selection: [
                0,
                selection.start.column + 1,
                rowDiff,
                selection.end.column + (rowDiff ? 0 : 1)
            ]
    };
};

var CstyleBehaviour = function(options) {
    this.add("braces", "insertion", function(state, action, editor, session, text) {
        var cursor = editor.getCursorPosition();
        var line = session.doc.getLine(cursor.row);
        if (text == '{') {
            initContext(editor);
            var selection = editor.getSelectionRange();
            var selected = session.doc.getTextRange(selection);
            if (selected !== "" && selected !== "{" && editor.getWrapBehavioursEnabled()) {
                return getWrapped(selection, selected, '{', '}');
            } else if (CstyleBehaviour.isSaneInsertion(editor, session)) {
                if (/[\]\}\)]/.test(line[cursor.column]) || editor.inMultiSelectMode || options && options.braces) {
                    CstyleBehaviour.recordAutoInsert(editor, session, "}");
                    return {
                        text: '{}',
                        selection: [1, 1]
                    };
                } else {
                    CstyleBehaviour.recordMaybeInsert(editor, session, "{");
                    return {
                        text: '{',
                        selection: [1, 1]
                    };
                }
            }
        } else if (text == '}') {
            initContext(editor);
            var rightChar = line.substring(cursor.column, cursor.column + 1);
            if (rightChar == '}') {
                var matching = session.$findOpeningBracket('}', {column: cursor.column + 1, row: cursor.row});
                if (matching !== null && CstyleBehaviour.isAutoInsertedClosing(cursor, line, text)) {
                    CstyleBehaviour.popAutoInsertedClosing();
                    return {
                        text: '',
                        selection: [1, 1]
                    };
                }
            }
        } else if (text == "\n" || text == "\r\n") {
            initContext(editor);
            var closing = "";
            if (CstyleBehaviour.isMaybeInsertedClosing(cursor, line)) {
                closing = lang.stringRepeat("}", context.maybeInsertedBrackets);
                CstyleBehaviour.clearMaybeInsertedClosing();
            }
            var rightChar = line.substring(cursor.column, cursor.column + 1);
            if (rightChar === '}') {
                var openBracePos = session.findMatchingBracket({row: cursor.row, column: cursor.column+1}, '}');
                if (!openBracePos)
                     return null;
                var next_indent = this.$getIndent(session.getLine(openBracePos.row));
            } else if (closing) {
                var next_indent = this.$getIndent(line);
            } else {
                CstyleBehaviour.clearMaybeInsertedClosing();
                return;
            }
            var indent = next_indent + session.getTabString();

            return {
                text: '\n' + indent + '\n' + next_indent + closing,
                selection: [1, indent.length, 1, indent.length]
            };
        } else {
            CstyleBehaviour.clearMaybeInsertedClosing();
        }
    });

    this.add("braces", "deletion", function(state, action, editor, session, range) {
        var selected = session.doc.getTextRange(range);
        if (!range.isMultiLine() && selected == '{') {
            initContext(editor);
            var line = session.doc.getLine(range.start.row);
            var rightChar = line.substring(range.end.column, range.end.column + 1);
            if (rightChar == '}') {
                range.end.column++;
                return range;
            } else {
                context.maybeInsertedBrackets--;
            }
        }
    });

    this.add("parens", "insertion", function(state, action, editor, session, text) {
        if (text == '(') {
            initContext(editor);
            var selection = editor.getSelectionRange();
            var selected = session.doc.getTextRange(selection);
            if (selected !== "" && editor.getWrapBehavioursEnabled()) {
                return getWrapped(selection, selected, '(', ')');
            } else if (CstyleBehaviour.isSaneInsertion(editor, session)) {
                CstyleBehaviour.recordAutoInsert(editor, session, ")");
                return {
                    text: '()',
                    selection: [1, 1]
                };
            }
        } else if (text == ')') {
            initContext(editor);
            var cursor = editor.getCursorPosition();
            var line = session.doc.getLine(cursor.row);
            var rightChar = line.substring(cursor.column, cursor.column + 1);
            if (rightChar == ')') {
                var matching = session.$findOpeningBracket(')', {column: cursor.column + 1, row: cursor.row});
                if (matching !== null && CstyleBehaviour.isAutoInsertedClosing(cursor, line, text)) {
                    CstyleBehaviour.popAutoInsertedClosing();
                    return {
                        text: '',
                        selection: [1, 1]
                    };
                }
            }
        }
    });

    this.add("parens", "deletion", function(state, action, editor, session, range) {
        var selected = session.doc.getTextRange(range);
        if (!range.isMultiLine() && selected == '(') {
            initContext(editor);
            var line = session.doc.getLine(range.start.row);
            var rightChar = line.substring(range.start.column + 1, range.start.column + 2);
            if (rightChar == ')') {
                range.end.column++;
                return range;
            }
        }
    });

    this.add("brackets", "insertion", function(state, action, editor, session, text) {
        if (text == '[') {
            initContext(editor);
            var selection = editor.getSelectionRange();
            var selected = session.doc.getTextRange(selection);
            if (selected !== "" && editor.getWrapBehavioursEnabled()) {
                return getWrapped(selection, selected, '[', ']');
            } else if (CstyleBehaviour.isSaneInsertion(editor, session)) {
                CstyleBehaviour.recordAutoInsert(editor, session, "]");
                return {
                    text: '[]',
                    selection: [1, 1]
                };
            }
        } else if (text == ']') {
            initContext(editor);
            var cursor = editor.getCursorPosition();
            var line = session.doc.getLine(cursor.row);
            var rightChar = line.substring(cursor.column, cursor.column + 1);
            if (rightChar == ']') {
                var matching = session.$findOpeningBracket(']', {column: cursor.column + 1, row: cursor.row});
                if (matching !== null && CstyleBehaviour.isAutoInsertedClosing(cursor, line, text)) {
                    CstyleBehaviour.popAutoInsertedClosing();
                    return {
                        text: '',
                        selection: [1, 1]
                    };
                }
            }
        }
    });

    this.add("brackets", "deletion", function(state, action, editor, session, range) {
        var selected = session.doc.getTextRange(range);
        if (!range.isMultiLine() && selected == '[') {
            initContext(editor);
            var line = session.doc.getLine(range.start.row);
            var rightChar = line.substring(range.start.column + 1, range.start.column + 2);
            if (rightChar == ']') {
                range.end.column++;
                return range;
            }
        }
    });

    this.add("string_dquotes", "insertion", function(state, action, editor, session, text) {
        var quotes = session.$mode.$quotes || defaultQuotes;
        if (text.length == 1 && quotes[text]) {
            if (this.lineCommentStart && this.lineCommentStart.indexOf(text) != -1)
                return;
            initContext(editor);
            var quote = text;
            var selection = editor.getSelectionRange();
            var selected = session.doc.getTextRange(selection);
            if (selected !== "" && (selected.length != 1 || !quotes[selected]) && editor.getWrapBehavioursEnabled()) {
                return getWrapped(selection, selected, quote, quote);
            } else if (!selected) {
                var cursor = editor.getCursorPosition();
                var line = session.doc.getLine(cursor.row);
                var leftChar = line.substring(cursor.column-1, cursor.column);
                var rightChar = line.substring(cursor.column, cursor.column + 1);

                var token = session.getTokenAt(cursor.row, cursor.column);
                var rightToken = session.getTokenAt(cursor.row, cursor.column + 1);
                if (leftChar == "\\" && token && /escape/.test(token.type))
                    return null;

                var stringBefore = token && /string|escape/.test(token.type);
                var stringAfter = !rightToken || /string|escape/.test(rightToken.type);

                var pair;
                if (rightChar == quote) {
                    pair = stringBefore !== stringAfter;
                    if (pair && /string\.end/.test(rightToken.type))
                        pair = false;
                } else {
                    if (stringBefore && !stringAfter)
                        return null; // wrap string with different quote
                    if (stringBefore && stringAfter)
                        return null; // do not pair quotes inside strings
                    var wordRe = session.$mode.tokenRe;
                    wordRe.lastIndex = 0;
                    var isWordBefore = wordRe.test(leftChar);
                    wordRe.lastIndex = 0;
                    var isWordAfter = wordRe.test(leftChar);
                    if (isWordBefore || isWordAfter)
                        return null; // before or after alphanumeric
                    if (rightChar && !/[\s;,.})\]\\]/.test(rightChar))
                        return null; // there is rightChar and it isn't closing
                    pair = true;
                }
                return {
                    text: pair ? quote + quote : "",
                    selection: [1,1]
                };
            }
        }
    });

    this.add("string_dquotes", "deletion", function(state, action, editor, session, range) {
        var selected = session.doc.getTextRange(range);
        if (!range.isMultiLine() && (selected == '"' || selected == "'")) {
            initContext(editor);
            var line = session.doc.getLine(range.start.row);
            var rightChar = line.substring(range.start.column + 1, range.start.column + 2);
            if (rightChar == selected) {
                range.end.column++;
                return range;
            }
        }
    });

};


CstyleBehaviour.isSaneInsertion = function(editor, session) {
    var cursor = editor.getCursorPosition();
    var iterator = new TokenIterator(session, cursor.row, cursor.column);
    if (!this.$matchTokenType(iterator.getCurrentToken() || "text", SAFE_INSERT_IN_TOKENS)) {
        var iterator2 = new TokenIterator(session, cursor.row, cursor.column + 1);
        if (!this.$matchTokenType(iterator2.getCurrentToken() || "text", SAFE_INSERT_IN_TOKENS))
            return false;
    }
    iterator.stepForward();
    return iterator.getCurrentTokenRow() !== cursor.row ||
        this.$matchTokenType(iterator.getCurrentToken() || "text", SAFE_INSERT_BEFORE_TOKENS);
};

CstyleBehaviour.$matchTokenType = function(token, types) {
    return types.indexOf(token.type || token) > -1;
};

CstyleBehaviour.recordAutoInsert = function(editor, session, bracket) {
    var cursor = editor.getCursorPosition();
    var line = session.doc.getLine(cursor.row);
    if (!this.isAutoInsertedClosing(cursor, line, context.autoInsertedLineEnd[0]))
        context.autoInsertedBrackets = 0;
    context.autoInsertedRow = cursor.row;
    context.autoInsertedLineEnd = bracket + line.substr(cursor.column);
    context.autoInsertedBrackets++;
};

CstyleBehaviour.recordMaybeInsert = function(editor, session, bracket) {
    var cursor = editor.getCursorPosition();
    var line = session.doc.getLine(cursor.row);
    if (!this.isMaybeInsertedClosing(cursor, line))
        context.maybeInsertedBrackets = 0;
    context.maybeInsertedRow = cursor.row;
    context.maybeInsertedLineStart = line.substr(0, cursor.column) + bracket;
    context.maybeInsertedLineEnd = line.substr(cursor.column);
    context.maybeInsertedBrackets++;
};

CstyleBehaviour.isAutoInsertedClosing = function(cursor, line, bracket) {
    return context.autoInsertedBrackets > 0 &&
        cursor.row === context.autoInsertedRow &&
        bracket === context.autoInsertedLineEnd[0] &&
        line.substr(cursor.column) === context.autoInsertedLineEnd;
};

CstyleBehaviour.isMaybeInsertedClosing = function(cursor, line) {
    return context.maybeInsertedBrackets > 0 &&
        cursor.row === context.maybeInsertedRow &&
        line.substr(cursor.column) === context.maybeInsertedLineEnd &&
        line.substr(0, cursor.column) == context.maybeInsertedLineStart;
};

CstyleBehaviour.popAutoInsertedClosing = function() {
    context.autoInsertedLineEnd = context.autoInsertedLineEnd.substr(1);
    context.autoInsertedBrackets--;
};

CstyleBehaviour.clearMaybeInsertedClosing = function() {
    if (context) {
        context.maybeInsertedBrackets = 0;
        context.maybeInsertedRow = -1;
    }
};



oop.inherits(CstyleBehaviour, Behaviour);

exports.CstyleBehaviour = CstyleBehaviour;
});

ace.define("ace/unicode",["require","exports","module"], function(acequire, exports, module) {
"use strict";
exports.packages = {};

addUnicodePackage({
    L:  "0041-005A0061-007A00AA00B500BA00C0-00D600D8-00F600F8-02C102C6-02D102E0-02E402EC02EE0370-037403760377037A-037D03860388-038A038C038E-03A103A3-03F503F7-0481048A-05250531-055605590561-058705D0-05EA05F0-05F20621-064A066E066F0671-06D306D506E506E606EE06EF06FA-06FC06FF07100712-072F074D-07A507B107CA-07EA07F407F507FA0800-0815081A082408280904-0939093D09500958-0961097109720979-097F0985-098C098F09900993-09A809AA-09B009B209B6-09B909BD09CE09DC09DD09DF-09E109F009F10A05-0A0A0A0F0A100A13-0A280A2A-0A300A320A330A350A360A380A390A59-0A5C0A5E0A72-0A740A85-0A8D0A8F-0A910A93-0AA80AAA-0AB00AB20AB30AB5-0AB90ABD0AD00AE00AE10B05-0B0C0B0F0B100B13-0B280B2A-0B300B320B330B35-0B390B3D0B5C0B5D0B5F-0B610B710B830B85-0B8A0B8E-0B900B92-0B950B990B9A0B9C0B9E0B9F0BA30BA40BA8-0BAA0BAE-0BB90BD00C05-0C0C0C0E-0C100C12-0C280C2A-0C330C35-0C390C3D0C580C590C600C610C85-0C8C0C8E-0C900C92-0CA80CAA-0CB30CB5-0CB90CBD0CDE0CE00CE10D05-0D0C0D0E-0D100D12-0D280D2A-0D390D3D0D600D610D7A-0D7F0D85-0D960D9A-0DB10DB3-0DBB0DBD0DC0-0DC60E01-0E300E320E330E40-0E460E810E820E840E870E880E8A0E8D0E94-0E970E99-0E9F0EA1-0EA30EA50EA70EAA0EAB0EAD-0EB00EB20EB30EBD0EC0-0EC40EC60EDC0EDD0F000F40-0F470F49-0F6C0F88-0F8B1000-102A103F1050-1055105A-105D106110651066106E-10701075-1081108E10A0-10C510D0-10FA10FC1100-1248124A-124D1250-12561258125A-125D1260-1288128A-128D1290-12B012B2-12B512B8-12BE12C012C2-12C512C8-12D612D8-13101312-13151318-135A1380-138F13A0-13F41401-166C166F-167F1681-169A16A0-16EA1700-170C170E-17111720-17311740-17511760-176C176E-17701780-17B317D717DC1820-18771880-18A818AA18B0-18F51900-191C1950-196D1970-19741980-19AB19C1-19C71A00-1A161A20-1A541AA71B05-1B331B45-1B4B1B83-1BA01BAE1BAF1C00-1C231C4D-1C4F1C5A-1C7D1CE9-1CEC1CEE-1CF11D00-1DBF1E00-1F151F18-1F1D1F20-1F451F48-1F4D1F50-1F571F591F5B1F5D1F5F-1F7D1F80-1FB41FB6-1FBC1FBE1FC2-1FC41FC6-1FCC1FD0-1FD31FD6-1FDB1FE0-1FEC1FF2-1FF41FF6-1FFC2071207F2090-209421022107210A-211321152119-211D212421262128212A-212D212F-2139213C-213F2145-2149214E218321842C00-2C2E2C30-2C5E2C60-2CE42CEB-2CEE2D00-2D252D30-2D652D6F2D80-2D962DA0-2DA62DA8-2DAE2DB0-2DB62DB8-2DBE2DC0-2DC62DC8-2DCE2DD0-2DD62DD8-2DDE2E2F300530063031-3035303B303C3041-3096309D-309F30A1-30FA30FC-30FF3105-312D3131-318E31A0-31B731F0-31FF3400-4DB54E00-9FCBA000-A48CA4D0-A4FDA500-A60CA610-A61FA62AA62BA640-A65FA662-A66EA67F-A697A6A0-A6E5A717-A71FA722-A788A78BA78CA7FB-A801A803-A805A807-A80AA80C-A822A840-A873A882-A8B3A8F2-A8F7A8FBA90A-A925A930-A946A960-A97CA984-A9B2A9CFAA00-AA28AA40-AA42AA44-AA4BAA60-AA76AA7AAA80-AAAFAAB1AAB5AAB6AAB9-AABDAAC0AAC2AADB-AADDABC0-ABE2AC00-D7A3D7B0-D7C6D7CB-D7FBF900-FA2DFA30-FA6DFA70-FAD9FB00-FB06FB13-FB17FB1DFB1F-FB28FB2A-FB36FB38-FB3CFB3EFB40FB41FB43FB44FB46-FBB1FBD3-FD3DFD50-FD8FFD92-FDC7FDF0-FDFBFE70-FE74FE76-FEFCFF21-FF3AFF41-FF5AFF66-FFBEFFC2-FFC7FFCA-FFCFFFD2-FFD7FFDA-FFDC",
    Ll: "0061-007A00AA00B500BA00DF-00F600F8-00FF01010103010501070109010B010D010F01110113011501170119011B011D011F01210123012501270129012B012D012F01310133013501370138013A013C013E014001420144014601480149014B014D014F01510153015501570159015B015D015F01610163016501670169016B016D016F0171017301750177017A017C017E-0180018301850188018C018D019201950199-019B019E01A101A301A501A801AA01AB01AD01B001B401B601B901BA01BD-01BF01C601C901CC01CE01D001D201D401D601D801DA01DC01DD01DF01E101E301E501E701E901EB01ED01EF01F001F301F501F901FB01FD01FF02010203020502070209020B020D020F02110213021502170219021B021D021F02210223022502270229022B022D022F02310233-0239023C023F0240024202470249024B024D024F-02930295-02AF037103730377037B-037D039003AC-03CE03D003D103D5-03D703D903DB03DD03DF03E103E303E503E703E903EB03ED03EF-03F303F503F803FB03FC0430-045F04610463046504670469046B046D046F04710473047504770479047B047D047F0481048B048D048F04910493049504970499049B049D049F04A104A304A504A704A904AB04AD04AF04B104B304B504B704B904BB04BD04BF04C204C404C604C804CA04CC04CE04CF04D104D304D504D704D904DB04DD04DF04E104E304E504E704E904EB04ED04EF04F104F304F504F704F904FB04FD04FF05010503050505070509050B050D050F05110513051505170519051B051D051F0521052305250561-05871D00-1D2B1D62-1D771D79-1D9A1E011E031E051E071E091E0B1E0D1E0F1E111E131E151E171E191E1B1E1D1E1F1E211E231E251E271E291E2B1E2D1E2F1E311E331E351E371E391E3B1E3D1E3F1E411E431E451E471E491E4B1E4D1E4F1E511E531E551E571E591E5B1E5D1E5F1E611E631E651E671E691E6B1E6D1E6F1E711E731E751E771E791E7B1E7D1E7F1E811E831E851E871E891E8B1E8D1E8F1E911E931E95-1E9D1E9F1EA11EA31EA51EA71EA91EAB1EAD1EAF1EB11EB31EB51EB71EB91EBB1EBD1EBF1EC11EC31EC51EC71EC91ECB1ECD1ECF1ED11ED31ED51ED71ED91EDB1EDD1EDF1EE11EE31EE51EE71EE91EEB1EED1EEF1EF11EF31EF51EF71EF91EFB1EFD1EFF-1F071F10-1F151F20-1F271F30-1F371F40-1F451F50-1F571F60-1F671F70-1F7D1F80-1F871F90-1F971FA0-1FA71FB0-1FB41FB61FB71FBE1FC2-1FC41FC61FC71FD0-1FD31FD61FD71FE0-1FE71FF2-1FF41FF61FF7210A210E210F2113212F21342139213C213D2146-2149214E21842C30-2C5E2C612C652C662C682C6A2C6C2C712C732C742C76-2C7C2C812C832C852C872C892C8B2C8D2C8F2C912C932C952C972C992C9B2C9D2C9F2CA12CA32CA52CA72CA92CAB2CAD2CAF2CB12CB32CB52CB72CB92CBB2CBD2CBF2CC12CC32CC52CC72CC92CCB2CCD2CCF2CD12CD32CD52CD72CD92CDB2CDD2CDF2CE12CE32CE42CEC2CEE2D00-2D25A641A643A645A647A649A64BA64DA64FA651A653A655A657A659A65BA65DA65FA663A665A667A669A66BA66DA681A683A685A687A689A68BA68DA68FA691A693A695A697A723A725A727A729A72BA72DA72F-A731A733A735A737A739A73BA73DA73FA741A743A745A747A749A74BA74DA74FA751A753A755A757A759A75BA75DA75FA761A763A765A767A769A76BA76DA76FA771-A778A77AA77CA77FA781A783A785A787A78CFB00-FB06FB13-FB17FF41-FF5A",
    Lu: "0041-005A00C0-00D600D8-00DE01000102010401060108010A010C010E01100112011401160118011A011C011E01200122012401260128012A012C012E01300132013401360139013B013D013F0141014301450147014A014C014E01500152015401560158015A015C015E01600162016401660168016A016C016E017001720174017601780179017B017D018101820184018601870189-018B018E-0191019301940196-0198019C019D019F01A001A201A401A601A701A901AC01AE01AF01B1-01B301B501B701B801BC01C401C701CA01CD01CF01D101D301D501D701D901DB01DE01E001E201E401E601E801EA01EC01EE01F101F401F6-01F801FA01FC01FE02000202020402060208020A020C020E02100212021402160218021A021C021E02200222022402260228022A022C022E02300232023A023B023D023E02410243-02460248024A024C024E03700372037603860388-038A038C038E038F0391-03A103A3-03AB03CF03D2-03D403D803DA03DC03DE03E003E203E403E603E803EA03EC03EE03F403F703F903FA03FD-042F04600462046404660468046A046C046E04700472047404760478047A047C047E0480048A048C048E04900492049404960498049A049C049E04A004A204A404A604A804AA04AC04AE04B004B204B404B604B804BA04BC04BE04C004C104C304C504C704C904CB04CD04D004D204D404D604D804DA04DC04DE04E004E204E404E604E804EA04EC04EE04F004F204F404F604F804FA04FC04FE05000502050405060508050A050C050E05100512051405160518051A051C051E0520052205240531-055610A0-10C51E001E021E041E061E081E0A1E0C1E0E1E101E121E141E161E181E1A1E1C1E1E1E201E221E241E261E281E2A1E2C1E2E1E301E321E341E361E381E3A1E3C1E3E1E401E421E441E461E481E4A1E4C1E4E1E501E521E541E561E581E5A1E5C1E5E1E601E621E641E661E681E6A1E6C1E6E1E701E721E741E761E781E7A1E7C1E7E1E801E821E841E861E881E8A1E8C1E8E1E901E921E941E9E1EA01EA21EA41EA61EA81EAA1EAC1EAE1EB01EB21EB41EB61EB81EBA1EBC1EBE1EC01EC21EC41EC61EC81ECA1ECC1ECE1ED01ED21ED41ED61ED81EDA1EDC1EDE1EE01EE21EE41EE61EE81EEA1EEC1EEE1EF01EF21EF41EF61EF81EFA1EFC1EFE1F08-1F0F1F18-1F1D1F28-1F2F1F38-1F3F1F48-1F4D1F591F5B1F5D1F5F1F68-1F6F1FB8-1FBB1FC8-1FCB1FD8-1FDB1FE8-1FEC1FF8-1FFB21022107210B-210D2110-211221152119-211D212421262128212A-212D2130-2133213E213F214521832C00-2C2E2C602C62-2C642C672C692C6B2C6D-2C702C722C752C7E-2C802C822C842C862C882C8A2C8C2C8E2C902C922C942C962C982C9A2C9C2C9E2CA02CA22CA42CA62CA82CAA2CAC2CAE2CB02CB22CB42CB62CB82CBA2CBC2CBE2CC02CC22CC42CC62CC82CCA2CCC2CCE2CD02CD22CD42CD62CD82CDA2CDC2CDE2CE02CE22CEB2CEDA640A642A644A646A648A64AA64CA64EA650A652A654A656A658A65AA65CA65EA662A664A666A668A66AA66CA680A682A684A686A688A68AA68CA68EA690A692A694A696A722A724A726A728A72AA72CA72EA732A734A736A738A73AA73CA73EA740A742A744A746A748A74AA74CA74EA750A752A754A756A758A75AA75CA75EA760A762A764A766A768A76AA76CA76EA779A77BA77DA77EA780A782A784A786A78BFF21-FF3A",
    Lt: "01C501C801CB01F21F88-1F8F1F98-1F9F1FA8-1FAF1FBC1FCC1FFC",
    Lm: "02B0-02C102C6-02D102E0-02E402EC02EE0374037A0559064006E506E607F407F507FA081A0824082809710E460EC610FC17D718431AA71C78-1C7D1D2C-1D611D781D9B-1DBF2071207F2090-20942C7D2D6F2E2F30053031-3035303B309D309E30FC-30FEA015A4F8-A4FDA60CA67FA717-A71FA770A788A9CFAA70AADDFF70FF9EFF9F",
    Lo: "01BB01C0-01C3029405D0-05EA05F0-05F20621-063F0641-064A066E066F0671-06D306D506EE06EF06FA-06FC06FF07100712-072F074D-07A507B107CA-07EA0800-08150904-0939093D09500958-096109720979-097F0985-098C098F09900993-09A809AA-09B009B209B6-09B909BD09CE09DC09DD09DF-09E109F009F10A05-0A0A0A0F0A100A13-0A280A2A-0A300A320A330A350A360A380A390A59-0A5C0A5E0A72-0A740A85-0A8D0A8F-0A910A93-0AA80AAA-0AB00AB20AB30AB5-0AB90ABD0AD00AE00AE10B05-0B0C0B0F0B100B13-0B280B2A-0B300B320B330B35-0B390B3D0B5C0B5D0B5F-0B610B710B830B85-0B8A0B8E-0B900B92-0B950B990B9A0B9C0B9E0B9F0BA30BA40BA8-0BAA0BAE-0BB90BD00C05-0C0C0C0E-0C100C12-0C280C2A-0C330C35-0C390C3D0C580C590C600C610C85-0C8C0C8E-0C900C92-0CA80CAA-0CB30CB5-0CB90CBD0CDE0CE00CE10D05-0D0C0D0E-0D100D12-0D280D2A-0D390D3D0D600D610D7A-0D7F0D85-0D960D9A-0DB10DB3-0DBB0DBD0DC0-0DC60E01-0E300E320E330E40-0E450E810E820E840E870E880E8A0E8D0E94-0E970E99-0E9F0EA1-0EA30EA50EA70EAA0EAB0EAD-0EB00EB20EB30EBD0EC0-0EC40EDC0EDD0F000F40-0F470F49-0F6C0F88-0F8B1000-102A103F1050-1055105A-105D106110651066106E-10701075-1081108E10D0-10FA1100-1248124A-124D1250-12561258125A-125D1260-1288128A-128D1290-12B012B2-12B512B8-12BE12C012C2-12C512C8-12D612D8-13101312-13151318-135A1380-138F13A0-13F41401-166C166F-167F1681-169A16A0-16EA1700-170C170E-17111720-17311740-17511760-176C176E-17701780-17B317DC1820-18421844-18771880-18A818AA18B0-18F51900-191C1950-196D1970-19741980-19AB19C1-19C71A00-1A161A20-1A541B05-1B331B45-1B4B1B83-1BA01BAE1BAF1C00-1C231C4D-1C4F1C5A-1C771CE9-1CEC1CEE-1CF12135-21382D30-2D652D80-2D962DA0-2DA62DA8-2DAE2DB0-2DB62DB8-2DBE2DC0-2DC62DC8-2DCE2DD0-2DD62DD8-2DDE3006303C3041-3096309F30A1-30FA30FF3105-312D3131-318E31A0-31B731F0-31FF3400-4DB54E00-9FCBA000-A014A016-A48CA4D0-A4F7A500-A60BA610-A61FA62AA62BA66EA6A0-A6E5A7FB-A801A803-A805A807-A80AA80C-A822A840-A873A882-A8B3A8F2-A8F7A8FBA90A-A925A930-A946A960-A97CA984-A9B2AA00-AA28AA40-AA42AA44-AA4BAA60-AA6FAA71-AA76AA7AAA80-AAAFAAB1AAB5AAB6AAB9-AABDAAC0AAC2AADBAADCABC0-ABE2AC00-D7A3D7B0-D7C6D7CB-D7FBF900-FA2DFA30-FA6DFA70-FAD9FB1DFB1F-FB28FB2A-FB36FB38-FB3CFB3EFB40FB41FB43FB44FB46-FBB1FBD3-FD3DFD50-FD8FFD92-FDC7FDF0-FDFBFE70-FE74FE76-FEFCFF66-FF6FFF71-FF9DFFA0-FFBEFFC2-FFC7FFCA-FFCFFFD2-FFD7FFDA-FFDC",
    M:  "0300-036F0483-04890591-05BD05BF05C105C205C405C505C70610-061A064B-065E067006D6-06DC06DE-06E406E706E806EA-06ED07110730-074A07A6-07B007EB-07F30816-0819081B-08230825-08270829-082D0900-0903093C093E-094E0951-0955096209630981-098309BC09BE-09C409C709C809CB-09CD09D709E209E30A01-0A030A3C0A3E-0A420A470A480A4B-0A4D0A510A700A710A750A81-0A830ABC0ABE-0AC50AC7-0AC90ACB-0ACD0AE20AE30B01-0B030B3C0B3E-0B440B470B480B4B-0B4D0B560B570B620B630B820BBE-0BC20BC6-0BC80BCA-0BCD0BD70C01-0C030C3E-0C440C46-0C480C4A-0C4D0C550C560C620C630C820C830CBC0CBE-0CC40CC6-0CC80CCA-0CCD0CD50CD60CE20CE30D020D030D3E-0D440D46-0D480D4A-0D4D0D570D620D630D820D830DCA0DCF-0DD40DD60DD8-0DDF0DF20DF30E310E34-0E3A0E47-0E4E0EB10EB4-0EB90EBB0EBC0EC8-0ECD0F180F190F350F370F390F3E0F3F0F71-0F840F860F870F90-0F970F99-0FBC0FC6102B-103E1056-1059105E-10601062-10641067-106D1071-10741082-108D108F109A-109D135F1712-17141732-1734175217531772177317B6-17D317DD180B-180D18A91920-192B1930-193B19B0-19C019C819C91A17-1A1B1A55-1A5E1A60-1A7C1A7F1B00-1B041B34-1B441B6B-1B731B80-1B821BA1-1BAA1C24-1C371CD0-1CD21CD4-1CE81CED1CF21DC0-1DE61DFD-1DFF20D0-20F02CEF-2CF12DE0-2DFF302A-302F3099309AA66F-A672A67CA67DA6F0A6F1A802A806A80BA823-A827A880A881A8B4-A8C4A8E0-A8F1A926-A92DA947-A953A980-A983A9B3-A9C0AA29-AA36AA43AA4CAA4DAA7BAAB0AAB2-AAB4AAB7AAB8AABEAABFAAC1ABE3-ABEAABECABEDFB1EFE00-FE0FFE20-FE26",
    Mn: "0300-036F0483-04870591-05BD05BF05C105C205C405C505C70610-061A064B-065E067006D6-06DC06DF-06E406E706E806EA-06ED07110730-074A07A6-07B007EB-07F30816-0819081B-08230825-08270829-082D0900-0902093C0941-0948094D0951-095509620963098109BC09C1-09C409CD09E209E30A010A020A3C0A410A420A470A480A4B-0A4D0A510A700A710A750A810A820ABC0AC1-0AC50AC70AC80ACD0AE20AE30B010B3C0B3F0B41-0B440B4D0B560B620B630B820BC00BCD0C3E-0C400C46-0C480C4A-0C4D0C550C560C620C630CBC0CBF0CC60CCC0CCD0CE20CE30D41-0D440D4D0D620D630DCA0DD2-0DD40DD60E310E34-0E3A0E47-0E4E0EB10EB4-0EB90EBB0EBC0EC8-0ECD0F180F190F350F370F390F71-0F7E0F80-0F840F860F870F90-0F970F99-0FBC0FC6102D-10301032-10371039103A103D103E10581059105E-10601071-1074108210851086108D109D135F1712-17141732-1734175217531772177317B7-17BD17C617C9-17D317DD180B-180D18A91920-19221927192819321939-193B1A171A181A561A58-1A5E1A601A621A65-1A6C1A73-1A7C1A7F1B00-1B031B341B36-1B3A1B3C1B421B6B-1B731B801B811BA2-1BA51BA81BA91C2C-1C331C361C371CD0-1CD21CD4-1CE01CE2-1CE81CED1DC0-1DE61DFD-1DFF20D0-20DC20E120E5-20F02CEF-2CF12DE0-2DFF302A-302F3099309AA66FA67CA67DA6F0A6F1A802A806A80BA825A826A8C4A8E0-A8F1A926-A92DA947-A951A980-A982A9B3A9B6-A9B9A9BCAA29-AA2EAA31AA32AA35AA36AA43AA4CAAB0AAB2-AAB4AAB7AAB8AABEAABFAAC1ABE5ABE8ABEDFB1EFE00-FE0FFE20-FE26",
    Mc: "0903093E-09400949-094C094E0982098309BE-09C009C709C809CB09CC09D70A030A3E-0A400A830ABE-0AC00AC90ACB0ACC0B020B030B3E0B400B470B480B4B0B4C0B570BBE0BBF0BC10BC20BC6-0BC80BCA-0BCC0BD70C01-0C030C41-0C440C820C830CBE0CC0-0CC40CC70CC80CCA0CCB0CD50CD60D020D030D3E-0D400D46-0D480D4A-0D4C0D570D820D830DCF-0DD10DD8-0DDF0DF20DF30F3E0F3F0F7F102B102C10311038103B103C105610571062-10641067-106D108310841087-108C108F109A-109C17B617BE-17C517C717C81923-19261929-192B193019311933-193819B0-19C019C819C91A19-1A1B1A551A571A611A631A641A6D-1A721B041B351B3B1B3D-1B411B431B441B821BA11BA61BA71BAA1C24-1C2B1C341C351CE11CF2A823A824A827A880A881A8B4-A8C3A952A953A983A9B4A9B5A9BAA9BBA9BD-A9C0AA2FAA30AA33AA34AA4DAA7BABE3ABE4ABE6ABE7ABE9ABEAABEC",
    Me: "0488048906DE20DD-20E020E2-20E4A670-A672",
    N:  "0030-003900B200B300B900BC-00BE0660-066906F0-06F907C0-07C90966-096F09E6-09EF09F4-09F90A66-0A6F0AE6-0AEF0B66-0B6F0BE6-0BF20C66-0C6F0C78-0C7E0CE6-0CEF0D66-0D750E50-0E590ED0-0ED90F20-0F331040-10491090-10991369-137C16EE-16F017E0-17E917F0-17F91810-18191946-194F19D0-19DA1A80-1A891A90-1A991B50-1B591BB0-1BB91C40-1C491C50-1C5920702074-20792080-20892150-21822185-21892460-249B24EA-24FF2776-27932CFD30073021-30293038-303A3192-31953220-32293251-325F3280-328932B1-32BFA620-A629A6E6-A6EFA830-A835A8D0-A8D9A900-A909A9D0-A9D9AA50-AA59ABF0-ABF9FF10-FF19",
    Nd: "0030-00390660-066906F0-06F907C0-07C90966-096F09E6-09EF0A66-0A6F0AE6-0AEF0B66-0B6F0BE6-0BEF0C66-0C6F0CE6-0CEF0D66-0D6F0E50-0E590ED0-0ED90F20-0F291040-10491090-109917E0-17E91810-18191946-194F19D0-19DA1A80-1A891A90-1A991B50-1B591BB0-1BB91C40-1C491C50-1C59A620-A629A8D0-A8D9A900-A909A9D0-A9D9AA50-AA59ABF0-ABF9FF10-FF19",
    Nl: "16EE-16F02160-21822185-218830073021-30293038-303AA6E6-A6EF",
    No: "00B200B300B900BC-00BE09F4-09F90BF0-0BF20C78-0C7E0D70-0D750F2A-0F331369-137C17F0-17F920702074-20792080-20892150-215F21892460-249B24EA-24FF2776-27932CFD3192-31953220-32293251-325F3280-328932B1-32BFA830-A835",
    P:  "0021-00230025-002A002C-002F003A003B003F0040005B-005D005F007B007D00A100AB00B700BB00BF037E0387055A-055F0589058A05BE05C005C305C605F305F40609060A060C060D061B061E061F066A-066D06D40700-070D07F7-07F90830-083E0964096509700DF40E4F0E5A0E5B0F04-0F120F3A-0F3D0F850FD0-0FD4104A-104F10FB1361-13681400166D166E169B169C16EB-16ED1735173617D4-17D617D8-17DA1800-180A1944194519DE19DF1A1E1A1F1AA0-1AA61AA8-1AAD1B5A-1B601C3B-1C3F1C7E1C7F1CD32010-20272030-20432045-20512053-205E207D207E208D208E2329232A2768-277527C527C627E6-27EF2983-299829D8-29DB29FC29FD2CF9-2CFC2CFE2CFF2E00-2E2E2E302E313001-30033008-30113014-301F3030303D30A030FBA4FEA4FFA60D-A60FA673A67EA6F2-A6F7A874-A877A8CEA8CFA8F8-A8FAA92EA92FA95FA9C1-A9CDA9DEA9DFAA5C-AA5FAADEAADFABEBFD3EFD3FFE10-FE19FE30-FE52FE54-FE61FE63FE68FE6AFE6BFF01-FF03FF05-FF0AFF0C-FF0FFF1AFF1BFF1FFF20FF3B-FF3DFF3FFF5BFF5DFF5F-FF65",
    Pd: "002D058A05BE140018062010-20152E172E1A301C303030A0FE31FE32FE58FE63FF0D",
    Ps: "0028005B007B0F3A0F3C169B201A201E2045207D208D23292768276A276C276E27702772277427C527E627E827EA27EC27EE2983298529872989298B298D298F299129932995299729D829DA29FC2E222E242E262E283008300A300C300E3010301430163018301A301DFD3EFE17FE35FE37FE39FE3BFE3DFE3FFE41FE43FE47FE59FE5BFE5DFF08FF3BFF5BFF5FFF62",
    Pe: "0029005D007D0F3B0F3D169C2046207E208E232A2769276B276D276F27712773277527C627E727E927EB27ED27EF298429862988298A298C298E2990299229942996299829D929DB29FD2E232E252E272E293009300B300D300F3011301530173019301B301E301FFD3FFE18FE36FE38FE3AFE3CFE3EFE40FE42FE44FE48FE5AFE5CFE5EFF09FF3DFF5DFF60FF63",
    Pi: "00AB2018201B201C201F20392E022E042E092E0C2E1C2E20",
    Pf: "00BB2019201D203A2E032E052E0A2E0D2E1D2E21",
    Pc: "005F203F20402054FE33FE34FE4D-FE4FFF3F",
    Po: "0021-00230025-0027002A002C002E002F003A003B003F0040005C00A100B700BF037E0387055A-055F058905C005C305C605F305F40609060A060C060D061B061E061F066A-066D06D40700-070D07F7-07F90830-083E0964096509700DF40E4F0E5A0E5B0F04-0F120F850FD0-0FD4104A-104F10FB1361-1368166D166E16EB-16ED1735173617D4-17D617D8-17DA1800-18051807-180A1944194519DE19DF1A1E1A1F1AA0-1AA61AA8-1AAD1B5A-1B601C3B-1C3F1C7E1C7F1CD3201620172020-20272030-2038203B-203E2041-20432047-205120532055-205E2CF9-2CFC2CFE2CFF2E002E012E06-2E082E0B2E0E-2E162E182E192E1B2E1E2E1F2E2A-2E2E2E302E313001-3003303D30FBA4FEA4FFA60D-A60FA673A67EA6F2-A6F7A874-A877A8CEA8CFA8F8-A8FAA92EA92FA95FA9C1-A9CDA9DEA9DFAA5C-AA5FAADEAADFABEBFE10-FE16FE19FE30FE45FE46FE49-FE4CFE50-FE52FE54-FE57FE5F-FE61FE68FE6AFE6BFF01-FF03FF05-FF07FF0AFF0CFF0EFF0FFF1AFF1BFF1FFF20FF3CFF61FF64FF65",
    S:  "0024002B003C-003E005E0060007C007E00A2-00A900AC00AE-00B100B400B600B800D700F702C2-02C502D2-02DF02E5-02EB02ED02EF-02FF03750384038503F604820606-0608060B060E060F06E906FD06FE07F609F209F309FA09FB0AF10B700BF3-0BFA0C7F0CF10CF20D790E3F0F01-0F030F13-0F170F1A-0F1F0F340F360F380FBE-0FC50FC7-0FCC0FCE0FCF0FD5-0FD8109E109F13601390-139917DB194019E0-19FF1B61-1B6A1B74-1B7C1FBD1FBF-1FC11FCD-1FCF1FDD-1FDF1FED-1FEF1FFD1FFE20442052207A-207C208A-208C20A0-20B8210021012103-21062108210921142116-2118211E-2123212521272129212E213A213B2140-2144214A-214D214F2190-2328232B-23E82400-24262440-244A249C-24E92500-26CD26CF-26E126E326E8-26FF2701-27042706-2709270C-27272729-274B274D274F-27522756-275E2761-276727942798-27AF27B1-27BE27C0-27C427C7-27CA27CC27D0-27E527F0-29822999-29D729DC-29FB29FE-2B4C2B50-2B592CE5-2CEA2E80-2E992E9B-2EF32F00-2FD52FF0-2FFB300430123013302030363037303E303F309B309C319031913196-319F31C0-31E33200-321E322A-32503260-327F328A-32B032C0-32FE3300-33FF4DC0-4DFFA490-A4C6A700-A716A720A721A789A78AA828-A82BA836-A839AA77-AA79FB29FDFCFDFDFE62FE64-FE66FE69FF04FF0BFF1C-FF1EFF3EFF40FF5CFF5EFFE0-FFE6FFE8-FFEEFFFCFFFD",
    Sm: "002B003C-003E007C007E00AC00B100D700F703F60606-060820442052207A-207C208A-208C2140-2144214B2190-2194219A219B21A021A321A621AE21CE21CF21D221D421F4-22FF2308-230B23202321237C239B-23B323DC-23E125B725C125F8-25FF266F27C0-27C427C7-27CA27CC27D0-27E527F0-27FF2900-29822999-29D729DC-29FB29FE-2AFF2B30-2B442B47-2B4CFB29FE62FE64-FE66FF0BFF1C-FF1EFF5CFF5EFFE2FFE9-FFEC",
    Sc: "002400A2-00A5060B09F209F309FB0AF10BF90E3F17DB20A0-20B8A838FDFCFE69FF04FFE0FFE1FFE5FFE6",
    Sk: "005E006000A800AF00B400B802C2-02C502D2-02DF02E5-02EB02ED02EF-02FF0375038403851FBD1FBF-1FC11FCD-1FCF1FDD-1FDF1FED-1FEF1FFD1FFE309B309CA700-A716A720A721A789A78AFF3EFF40FFE3",
    So: "00A600A700A900AE00B000B60482060E060F06E906FD06FE07F609FA0B700BF3-0BF80BFA0C7F0CF10CF20D790F01-0F030F13-0F170F1A-0F1F0F340F360F380FBE-0FC50FC7-0FCC0FCE0FCF0FD5-0FD8109E109F13601390-1399194019E0-19FF1B61-1B6A1B74-1B7C210021012103-21062108210921142116-2118211E-2123212521272129212E213A213B214A214C214D214F2195-2199219C-219F21A121A221A421A521A7-21AD21AF-21CD21D021D121D321D5-21F32300-2307230C-231F2322-2328232B-237B237D-239A23B4-23DB23E2-23E82400-24262440-244A249C-24E92500-25B625B8-25C025C2-25F72600-266E2670-26CD26CF-26E126E326E8-26FF2701-27042706-2709270C-27272729-274B274D274F-27522756-275E2761-276727942798-27AF27B1-27BE2800-28FF2B00-2B2F2B452B462B50-2B592CE5-2CEA2E80-2E992E9B-2EF32F00-2FD52FF0-2FFB300430123013302030363037303E303F319031913196-319F31C0-31E33200-321E322A-32503260-327F328A-32B032C0-32FE3300-33FF4DC0-4DFFA490-A4C6A828-A82BA836A837A839AA77-AA79FDFDFFE4FFE8FFEDFFEEFFFCFFFD",
    Z:  "002000A01680180E2000-200A20282029202F205F3000",
    Zs: "002000A01680180E2000-200A202F205F3000",
    Zl: "2028",
    Zp: "2029",
    C:  "0000-001F007F-009F00AD03780379037F-0383038B038D03A20526-05300557055805600588058B-059005C8-05CF05EB-05EF05F5-0605061C061D0620065F06DD070E070F074B074C07B2-07BF07FB-07FF082E082F083F-08FF093A093B094F095609570973-097809800984098D098E0991099209A909B109B3-09B509BA09BB09C509C609C909CA09CF-09D609D8-09DB09DE09E409E509FC-0A000A040A0B-0A0E0A110A120A290A310A340A370A3A0A3B0A3D0A43-0A460A490A4A0A4E-0A500A52-0A580A5D0A5F-0A650A76-0A800A840A8E0A920AA90AB10AB40ABA0ABB0AC60ACA0ACE0ACF0AD1-0ADF0AE40AE50AF00AF2-0B000B040B0D0B0E0B110B120B290B310B340B3A0B3B0B450B460B490B4A0B4E-0B550B58-0B5B0B5E0B640B650B72-0B810B840B8B-0B8D0B910B96-0B980B9B0B9D0BA0-0BA20BA5-0BA70BAB-0BAD0BBA-0BBD0BC3-0BC50BC90BCE0BCF0BD1-0BD60BD8-0BE50BFB-0C000C040C0D0C110C290C340C3A-0C3C0C450C490C4E-0C540C570C5A-0C5F0C640C650C70-0C770C800C810C840C8D0C910CA90CB40CBA0CBB0CC50CC90CCE-0CD40CD7-0CDD0CDF0CE40CE50CF00CF3-0D010D040D0D0D110D290D3A-0D3C0D450D490D4E-0D560D58-0D5F0D640D650D76-0D780D800D810D840D97-0D990DB20DBC0DBE0DBF0DC7-0DC90DCB-0DCE0DD50DD70DE0-0DF10DF5-0E000E3B-0E3E0E5C-0E800E830E850E860E890E8B0E8C0E8E-0E930E980EA00EA40EA60EA80EA90EAC0EBA0EBE0EBF0EC50EC70ECE0ECF0EDA0EDB0EDE-0EFF0F480F6D-0F700F8C-0F8F0F980FBD0FCD0FD9-0FFF10C6-10CF10FD-10FF1249124E124F12571259125E125F1289128E128F12B112B612B712BF12C112C612C712D7131113161317135B-135E137D-137F139A-139F13F5-13FF169D-169F16F1-16FF170D1715-171F1737-173F1754-175F176D17711774-177F17B417B517DE17DF17EA-17EF17FA-17FF180F181A-181F1878-187F18AB-18AF18F6-18FF191D-191F192C-192F193C-193F1941-1943196E196F1975-197F19AC-19AF19CA-19CF19DB-19DD1A1C1A1D1A5F1A7D1A7E1A8A-1A8F1A9A-1A9F1AAE-1AFF1B4C-1B4F1B7D-1B7F1BAB-1BAD1BBA-1BFF1C38-1C3A1C4A-1C4C1C80-1CCF1CF3-1CFF1DE7-1DFC1F161F171F1E1F1F1F461F471F4E1F4F1F581F5A1F5C1F5E1F7E1F7F1FB51FC51FD41FD51FDC1FF01FF11FF51FFF200B-200F202A-202E2060-206F20722073208F2095-209F20B9-20CF20F1-20FF218A-218F23E9-23FF2427-243F244B-245F26CE26E226E4-26E727002705270A270B2728274C274E2753-2755275F27602795-279727B027BF27CB27CD-27CF2B4D-2B4F2B5A-2BFF2C2F2C5F2CF2-2CF82D26-2D2F2D66-2D6E2D70-2D7F2D97-2D9F2DA72DAF2DB72DBF2DC72DCF2DD72DDF2E32-2E7F2E9A2EF4-2EFF2FD6-2FEF2FFC-2FFF3040309730983100-3104312E-3130318F31B8-31BF31E4-31EF321F32FF4DB6-4DBF9FCC-9FFFA48D-A48FA4C7-A4CFA62C-A63FA660A661A674-A67BA698-A69FA6F8-A6FFA78D-A7FAA82C-A82FA83A-A83FA878-A87FA8C5-A8CDA8DA-A8DFA8FC-A8FFA954-A95EA97D-A97FA9CEA9DA-A9DDA9E0-A9FFAA37-AA3FAA4EAA4FAA5AAA5BAA7C-AA7FAAC3-AADAAAE0-ABBFABEEABEFABFA-ABFFD7A4-D7AFD7C7-D7CAD7FC-F8FFFA2EFA2FFA6EFA6FFADA-FAFFFB07-FB12FB18-FB1CFB37FB3DFB3FFB42FB45FBB2-FBD2FD40-FD4FFD90FD91FDC8-FDEFFDFEFDFFFE1A-FE1FFE27-FE2FFE53FE67FE6C-FE6FFE75FEFD-FF00FFBF-FFC1FFC8FFC9FFD0FFD1FFD8FFD9FFDD-FFDFFFE7FFEF-FFFBFFFEFFFF",
    Cc: "0000-001F007F-009F",
    Cf: "00AD0600-060306DD070F17B417B5200B-200F202A-202E2060-2064206A-206FFEFFFFF9-FFFB",
    Co: "E000-F8FF",
    Cs: "D800-DFFF",
    Cn: "03780379037F-0383038B038D03A20526-05300557055805600588058B-059005C8-05CF05EB-05EF05F5-05FF06040605061C061D0620065F070E074B074C07B2-07BF07FB-07FF082E082F083F-08FF093A093B094F095609570973-097809800984098D098E0991099209A909B109B3-09B509BA09BB09C509C609C909CA09CF-09D609D8-09DB09DE09E409E509FC-0A000A040A0B-0A0E0A110A120A290A310A340A370A3A0A3B0A3D0A43-0A460A490A4A0A4E-0A500A52-0A580A5D0A5F-0A650A76-0A800A840A8E0A920AA90AB10AB40ABA0ABB0AC60ACA0ACE0ACF0AD1-0ADF0AE40AE50AF00AF2-0B000B040B0D0B0E0B110B120B290B310B340B3A0B3B0B450B460B490B4A0B4E-0B550B58-0B5B0B5E0B640B650B72-0B810B840B8B-0B8D0B910B96-0B980B9B0B9D0BA0-0BA20BA5-0BA70BAB-0BAD0BBA-0BBD0BC3-0BC50BC90BCE0BCF0BD1-0BD60BD8-0BE50BFB-0C000C040C0D0C110C290C340C3A-0C3C0C450C490C4E-0C540C570C5A-0C5F0C640C650C70-0C770C800C810C840C8D0C910CA90CB40CBA0CBB0CC50CC90CCE-0CD40CD7-0CDD0CDF0CE40CE50CF00CF3-0D010D040D0D0D110D290D3A-0D3C0D450D490D4E-0D560D58-0D5F0D640D650D76-0D780D800D810D840D97-0D990DB20DBC0DBE0DBF0DC7-0DC90DCB-0DCE0DD50DD70DE0-0DF10DF5-0E000E3B-0E3E0E5C-0E800E830E850E860E890E8B0E8C0E8E-0E930E980EA00EA40EA60EA80EA90EAC0EBA0EBE0EBF0EC50EC70ECE0ECF0EDA0EDB0EDE-0EFF0F480F6D-0F700F8C-0F8F0F980FBD0FCD0FD9-0FFF10C6-10CF10FD-10FF1249124E124F12571259125E125F1289128E128F12B112B612B712BF12C112C612C712D7131113161317135B-135E137D-137F139A-139F13F5-13FF169D-169F16F1-16FF170D1715-171F1737-173F1754-175F176D17711774-177F17DE17DF17EA-17EF17FA-17FF180F181A-181F1878-187F18AB-18AF18F6-18FF191D-191F192C-192F193C-193F1941-1943196E196F1975-197F19AC-19AF19CA-19CF19DB-19DD1A1C1A1D1A5F1A7D1A7E1A8A-1A8F1A9A-1A9F1AAE-1AFF1B4C-1B4F1B7D-1B7F1BAB-1BAD1BBA-1BFF1C38-1C3A1C4A-1C4C1C80-1CCF1CF3-1CFF1DE7-1DFC1F161F171F1E1F1F1F461F471F4E1F4F1F581F5A1F5C1F5E1F7E1F7F1FB51FC51FD41FD51FDC1FF01FF11FF51FFF2065-206920722073208F2095-209F20B9-20CF20F1-20FF218A-218F23E9-23FF2427-243F244B-245F26CE26E226E4-26E727002705270A270B2728274C274E2753-2755275F27602795-279727B027BF27CB27CD-27CF2B4D-2B4F2B5A-2BFF2C2F2C5F2CF2-2CF82D26-2D2F2D66-2D6E2D70-2D7F2D97-2D9F2DA72DAF2DB72DBF2DC72DCF2DD72DDF2E32-2E7F2E9A2EF4-2EFF2FD6-2FEF2FFC-2FFF3040309730983100-3104312E-3130318F31B8-31BF31E4-31EF321F32FF4DB6-4DBF9FCC-9FFFA48D-A48FA4C7-A4CFA62C-A63FA660A661A674-A67BA698-A69FA6F8-A6FFA78D-A7FAA82C-A82FA83A-A83FA878-A87FA8C5-A8CDA8DA-A8DFA8FC-A8FFA954-A95EA97D-A97FA9CEA9DA-A9DDA9E0-A9FFAA37-AA3FAA4EAA4FAA5AAA5BAA7C-AA7FAAC3-AADAAAE0-ABBFABEEABEFABFA-ABFFD7A4-D7AFD7C7-D7CAD7FC-D7FFFA2EFA2FFA6EFA6FFADA-FAFFFB07-FB12FB18-FB1CFB37FB3DFB3FFB42FB45FBB2-FBD2FD40-FD4FFD90FD91FDC8-FDEFFDFEFDFFFE1A-FE1FFE27-FE2FFE53FE67FE6C-FE6FFE75FEFDFEFEFF00FFBF-FFC1FFC8FFC9FFD0FFD1FFD8FFD9FFDD-FFDFFFE7FFEF-FFF8FFFEFFFF"
});

function addUnicodePackage (pack) {
    var codePoint = /\w{4}/g;
    for (var name in pack)
        exports.packages[name] = pack[name].replace(codePoint, "\\u$&");
}

});

ace.define("ace/mode/text",["require","exports","module","ace/tokenizer","ace/mode/text_highlight_rules","ace/mode/behaviour/cstyle","ace/unicode","ace/lib/lang","ace/token_iterator","ace/range"], function(acequire, exports, module) {
"use strict";

var Tokenizer = acequire("../tokenizer").Tokenizer;
var TextHighlightRules = acequire("./text_highlight_rules").TextHighlightRules;
var CstyleBehaviour = acequire("./behaviour/cstyle").CstyleBehaviour;
var unicode = acequire("../unicode");
var lang = acequire("../lib/lang");
var TokenIterator = acequire("../token_iterator").TokenIterator;
var Range = acequire("../range").Range;

var Mode = function() {
    this.HighlightRules = TextHighlightRules;
};

(function() {
    this.$defaultBehaviour = new CstyleBehaviour();

    this.tokenRe = new RegExp("^["
        + unicode.packages.L
        + unicode.packages.Mn + unicode.packages.Mc
        + unicode.packages.Nd
        + unicode.packages.Pc + "\\$_]+", "g"
    );

    this.nonTokenRe = new RegExp("^(?:[^"
        + unicode.packages.L
        + unicode.packages.Mn + unicode.packages.Mc
        + unicode.packages.Nd
        + unicode.packages.Pc + "\\$_]|\\s])+", "g"
    );

    this.getTokenizer = function() {
        if (!this.$tokenizer) {
            this.$highlightRules = this.$highlightRules || new this.HighlightRules(this.$highlightRuleConfig);
            this.$tokenizer = new Tokenizer(this.$highlightRules.getRules());
        }
        return this.$tokenizer;
    };

    this.lineCommentStart = "";
    this.blockComment = "";

    this.toggleCommentLines = function(state, session, startRow, endRow) {
        var doc = session.doc;

        var ignoreBlankLines = true;
        var shouldRemove = true;
        var minIndent = Infinity;
        var tabSize = session.getTabSize();
        var insertAtTabStop = false;

        if (!this.lineCommentStart) {
            if (!this.blockComment)
                return false;
            var lineCommentStart = this.blockComment.start;
            var lineCommentEnd = this.blockComment.end;
            var regexpStart = new RegExp("^(\\s*)(?:" + lang.escapeRegExp(lineCommentStart) + ")");
            var regexpEnd = new RegExp("(?:" + lang.escapeRegExp(lineCommentEnd) + ")\\s*$");

            var comment = function(line, i) {
                if (testRemove(line, i))
                    return;
                if (!ignoreBlankLines || /\S/.test(line)) {
                    doc.insertInLine({row: i, column: line.length}, lineCommentEnd);
                    doc.insertInLine({row: i, column: minIndent}, lineCommentStart);
                }
            };

            var uncomment = function(line, i) {
                var m;
                if (m = line.match(regexpEnd))
                    doc.removeInLine(i, line.length - m[0].length, line.length);
                if (m = line.match(regexpStart))
                    doc.removeInLine(i, m[1].length, m[0].length);
            };

            var testRemove = function(line, row) {
                if (regexpStart.test(line))
                    return true;
                var tokens = session.getTokens(row);
                for (var i = 0; i < tokens.length; i++) {
                    if (tokens[i].type === "comment")
                        return true;
                }
            };
        } else {
            if (Array.isArray(this.lineCommentStart)) {
                var regexpStart = this.lineCommentStart.map(lang.escapeRegExp).join("|");
                var lineCommentStart = this.lineCommentStart[0];
            } else {
                var regexpStart = lang.escapeRegExp(this.lineCommentStart);
                var lineCommentStart = this.lineCommentStart;
            }
            regexpStart = new RegExp("^(\\s*)(?:" + regexpStart + ") ?");
            
            insertAtTabStop = session.getUseSoftTabs();

            var uncomment = function(line, i) {
                var m = line.match(regexpStart);
                if (!m) return;
                var start = m[1].length, end = m[0].length;
                if (!shouldInsertSpace(line, start, end) && m[0][end - 1] == " ")
                    end--;
                doc.removeInLine(i, start, end);
            };
            var commentWithSpace = lineCommentStart + " ";
            var comment = function(line, i) {
                if (!ignoreBlankLines || /\S/.test(line)) {
                    if (shouldInsertSpace(line, minIndent, minIndent))
                        doc.insertInLine({row: i, column: minIndent}, commentWithSpace);
                    else
                        doc.insertInLine({row: i, column: minIndent}, lineCommentStart);
                }
            };
            var testRemove = function(line, i) {
                return regexpStart.test(line);
            };
            
            var shouldInsertSpace = function(line, before, after) {
                var spaces = 0;
                while (before-- && line.charAt(before) == " ")
                    spaces++;
                if (spaces % tabSize != 0)
                    return false;
                var spaces = 0;
                while (line.charAt(after++) == " ")
                    spaces++;
                if (tabSize > 2)
                    return spaces % tabSize != tabSize - 1;
                else
                    return spaces % tabSize == 0;
                return true;
            };
        }

        function iter(fun) {
            for (var i = startRow; i <= endRow; i++)
                fun(doc.getLine(i), i);
        }


        var minEmptyLength = Infinity;
        iter(function(line, i) {
            var indent = line.search(/\S/);
            if (indent !== -1) {
                if (indent < minIndent)
                    minIndent = indent;
                if (shouldRemove && !testRemove(line, i))
                    shouldRemove = false;
            } else if (minEmptyLength > line.length) {
                minEmptyLength = line.length;
            }
        });

        if (minIndent == Infinity) {
            minIndent = minEmptyLength;
            ignoreBlankLines = false;
            shouldRemove = false;
        }

        if (insertAtTabStop && minIndent % tabSize != 0)
            minIndent = Math.floor(minIndent / tabSize) * tabSize;

        iter(shouldRemove ? uncomment : comment);
    };

    this.toggleBlockComment = function(state, session, range, cursor) {
        var comment = this.blockComment;
        if (!comment)
            return;
        if (!comment.start && comment[0])
            comment = comment[0];

        var iterator = new TokenIterator(session, cursor.row, cursor.column);
        var token = iterator.getCurrentToken();

        var sel = session.selection;
        var initialRange = session.selection.toOrientedRange();
        var startRow, colDiff;

        if (token && /comment/.test(token.type)) {
            var startRange, endRange;
            while (token && /comment/.test(token.type)) {
                var i = token.value.indexOf(comment.start);
                if (i != -1) {
                    var row = iterator.getCurrentTokenRow();
                    var column = iterator.getCurrentTokenColumn() + i;
                    startRange = new Range(row, column, row, column + comment.start.length);
                    break;
                }
                token = iterator.stepBackward();
            }

            var iterator = new TokenIterator(session, cursor.row, cursor.column);
            var token = iterator.getCurrentToken();
            while (token && /comment/.test(token.type)) {
                var i = token.value.indexOf(comment.end);
                if (i != -1) {
                    var row = iterator.getCurrentTokenRow();
                    var column = iterator.getCurrentTokenColumn() + i;
                    endRange = new Range(row, column, row, column + comment.end.length);
                    break;
                }
                token = iterator.stepForward();
            }
            if (endRange)
                session.remove(endRange);
            if (startRange) {
                session.remove(startRange);
                startRow = startRange.start.row;
                colDiff = -comment.start.length;
            }
        } else {
            colDiff = comment.start.length;
            startRow = range.start.row;
            session.insert(range.end, comment.end);
            session.insert(range.start, comment.start);
        }
        if (initialRange.start.row == startRow)
            initialRange.start.column += colDiff;
        if (initialRange.end.row == startRow)
            initialRange.end.column += colDiff;
        session.selection.fromOrientedRange(initialRange);
    };

    this.getNextLineIndent = function(state, line, tab) {
        return this.$getIndent(line);
    };

    this.checkOutdent = function(state, line, input) {
        return false;
    };

    this.autoOutdent = function(state, doc, row) {
    };

    this.$getIndent = function(line) {
        return line.match(/^\s*/)[0];
    };

    this.createWorker = function(session) {
        return null;
    };

    this.createModeDelegates = function (mapping) {
        this.$embeds = [];
        this.$modes = {};
        for (var i in mapping) {
            if (mapping[i]) {
                this.$embeds.push(i);
                this.$modes[i] = new mapping[i]();
            }
        }

        var delegations = ["toggleBlockComment", "toggleCommentLines", "getNextLineIndent", 
            "checkOutdent", "autoOutdent", "transformAction", "getCompletions"];

        for (var i = 0; i < delegations.length; i++) {
            (function(scope) {
              var functionName = delegations[i];
              var defaultHandler = scope[functionName];
              scope[delegations[i]] = function() {
                  return this.$delegator(functionName, arguments, defaultHandler);
              };
            }(this));
        }
    };

    this.$delegator = function(method, args, defaultHandler) {
        var state = args[0];
        if (typeof state != "string")
            state = state[0];
        for (var i = 0; i < this.$embeds.length; i++) {
            if (!this.$modes[this.$embeds[i]]) continue;

            var split = state.split(this.$embeds[i]);
            if (!split[0] && split[1]) {
                args[0] = split[1];
                var mode = this.$modes[this.$embeds[i]];
                return mode[method].apply(mode, args);
            }
        }
        var ret = defaultHandler.apply(this, args);
        return defaultHandler ? ret : undefined;
    };

    this.transformAction = function(state, action, editor, session, param) {
        if (this.$behaviour) {
            var behaviours = this.$behaviour.getBehaviours();
            for (var key in behaviours) {
                if (behaviours[key][action]) {
                    var ret = behaviours[key][action].apply(this, arguments);
                    if (ret) {
                        return ret;
                    }
                }
            }
        }
    };
    
    this.getKeywords = function(append) {
        if (!this.completionKeywords) {
            var rules = this.$tokenizer.rules;
            var completionKeywords = [];
            for (var rule in rules) {
                var ruleItr = rules[rule];
                for (var r = 0, l = ruleItr.length; r < l; r++) {
                    if (typeof ruleItr[r].token === "string") {
                        if (/keyword|support|storage/.test(ruleItr[r].token))
                            completionKeywords.push(ruleItr[r].regex);
                    }
                    else if (typeof ruleItr[r].token === "object") {
                        for (var a = 0, aLength = ruleItr[r].token.length; a < aLength; a++) {    
                            if (/keyword|support|storage/.test(ruleItr[r].token[a])) {
                                var rule = ruleItr[r].regex.match(/\(.+?\)/g)[a];
                                completionKeywords.push(rule.substr(1, rule.length - 2));
                            }
                        }
                    }
                }
            }
            this.completionKeywords = completionKeywords;
        }
        if (!append)
            return this.$keywordList;
        return completionKeywords.concat(this.$keywordList || []);
    };
    
    this.$createKeywordList = function() {
        if (!this.$highlightRules)
            this.getTokenizer();
        return this.$keywordList = this.$highlightRules.$keywordList || [];
    };

    this.getCompletions = function(state, session, pos, prefix) {
        var keywords = this.$keywordList || this.$createKeywordList();
        return keywords.map(function(word) {
            return {
                name: word,
                value: word,
                score: 0,
                meta: "keyword"
            };
        });
    };

    this.$id = "ace/mode/text";
}).call(Mode.prototype);

exports.Mode = Mode;
});

ace.define("ace/apply_delta",["require","exports","module"], function(acequire, exports, module) {
"use strict";

function throwDeltaError(delta, errorText){
    console.log("Invalid Delta:", delta);
    throw "Invalid Delta: " + errorText;
}

function positionInDocument(docLines, position) {
    return position.row    >= 0 && position.row    <  docLines.length &&
           position.column >= 0 && position.column <= docLines[position.row].length;
}

function validateDelta(docLines, delta) {
    if (delta.action != "insert" && delta.action != "remove")
        throwDeltaError(delta, "delta.action must be 'insert' or 'remove'");
    if (!(delta.lines instanceof Array))
        throwDeltaError(delta, "delta.lines must be an Array");
    if (!delta.start || !delta.end)
       throwDeltaError(delta, "delta.start/end must be an present");
    var start = delta.start;
    if (!positionInDocument(docLines, delta.start))
        throwDeltaError(delta, "delta.start must be contained in document");
    var end = delta.end;
    if (delta.action == "remove" && !positionInDocument(docLines, end))
        throwDeltaError(delta, "delta.end must contained in document for 'remove' actions");
    var numRangeRows = end.row - start.row;
    var numRangeLastLineChars = (end.column - (numRangeRows == 0 ? start.column : 0));
    if (numRangeRows != delta.lines.length - 1 || delta.lines[numRangeRows].length != numRangeLastLineChars)
        throwDeltaError(delta, "delta.range must match delta lines");
}

exports.applyDelta = function(docLines, delta, doNotValidate) {
    
    var row = delta.start.row;
    var startColumn = delta.start.column;
    var line = docLines[row] || "";
    switch (delta.action) {
        case "insert":
            var lines = delta.lines;
            if (lines.length === 1) {
                docLines[row] = line.substring(0, startColumn) + delta.lines[0] + line.substring(startColumn);
            } else {
                var args = [row, 1].concat(delta.lines);
                docLines.splice.apply(docLines, args);
                docLines[row] = line.substring(0, startColumn) + docLines[row];
                docLines[row + delta.lines.length - 1] += line.substring(startColumn);
            }
            break;
        case "remove":
            var endColumn = delta.end.column;
            var endRow = delta.end.row;
            if (row === endRow) {
                docLines[row] = line.substring(0, startColumn) + line.substring(endColumn);
            } else {
                docLines.splice(
                    row, endRow - row + 1,
                    line.substring(0, startColumn) + docLines[endRow].substring(endColumn)
                );
            }
            break;
    }
};
});

ace.define("ace/anchor",["require","exports","module","ace/lib/oop","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;

var Anchor = exports.Anchor = function(doc, row, column) {
    this.$onChange = this.onChange.bind(this);
    this.attach(doc);
    
    if (typeof column == "undefined")
        this.setPosition(row.row, row.column);
    else
        this.setPosition(row, column);
};

(function() {

    oop.implement(this, EventEmitter);
    this.getPosition = function() {
        return this.$clipPositionToDocument(this.row, this.column);
    };
    this.getDocument = function() {
        return this.document;
    };
    this.$insertRight = false;
    this.onChange = function(delta) {
        if (delta.start.row == delta.end.row && delta.start.row != this.row)
            return;

        if (delta.start.row > this.row)
            return;
            
        var point = $getTransformedPoint(delta, {row: this.row, column: this.column}, this.$insertRight);
        this.setPosition(point.row, point.column, true);
    };
    
    function $pointsInOrder(point1, point2, equalPointsInOrder) {
        var bColIsAfter = equalPointsInOrder ? point1.column <= point2.column : point1.column < point2.column;
        return (point1.row < point2.row) || (point1.row == point2.row && bColIsAfter);
    }
            
    function $getTransformedPoint(delta, point, moveIfEqual) {
        var deltaIsInsert = delta.action == "insert";
        var deltaRowShift = (deltaIsInsert ? 1 : -1) * (delta.end.row    - delta.start.row);
        var deltaColShift = (deltaIsInsert ? 1 : -1) * (delta.end.column - delta.start.column);
        var deltaStart = delta.start;
        var deltaEnd = deltaIsInsert ? deltaStart : delta.end; // Collapse insert range.
        if ($pointsInOrder(point, deltaStart, moveIfEqual)) {
            return {
                row: point.row,
                column: point.column
            };
        }
        if ($pointsInOrder(deltaEnd, point, !moveIfEqual)) {
            return {
                row: point.row + deltaRowShift,
                column: point.column + (point.row == deltaEnd.row ? deltaColShift : 0)
            };
        }
        
        return {
            row: deltaStart.row,
            column: deltaStart.column
        };
    }
    this.setPosition = function(row, column, noClip) {
        var pos;
        if (noClip) {
            pos = {
                row: row,
                column: column
            };
        } else {
            pos = this.$clipPositionToDocument(row, column);
        }

        if (this.row == pos.row && this.column == pos.column)
            return;

        var old = {
            row: this.row,
            column: this.column
        };

        this.row = pos.row;
        this.column = pos.column;
        this._signal("change", {
            old: old,
            value: pos
        });
    };
    this.detach = function() {
        this.document.removeEventListener("change", this.$onChange);
    };
    this.attach = function(doc) {
        this.document = doc || this.document;
        this.document.on("change", this.$onChange);
    };
    this.$clipPositionToDocument = function(row, column) {
        var pos = {};

        if (row >= this.document.getLength()) {
            pos.row = Math.max(0, this.document.getLength() - 1);
            pos.column = this.document.getLine(pos.row).length;
        }
        else if (row < 0) {
            pos.row = 0;
            pos.column = 0;
        }
        else {
            pos.row = row;
            pos.column = Math.min(this.document.getLine(pos.row).length, Math.max(0, column));
        }

        if (column < 0)
            pos.column = 0;

        return pos;
    };

}).call(Anchor.prototype);

});

ace.define("ace/document",["require","exports","module","ace/lib/oop","ace/apply_delta","ace/lib/event_emitter","ace/range","ace/anchor"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var applyDelta = acequire("./apply_delta").applyDelta;
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var Range = acequire("./range").Range;
var Anchor = acequire("./anchor").Anchor;

var Document = function(textOrLines) {
    this.$lines = [""];
    if (textOrLines.length === 0) {
        this.$lines = [""];
    } else if (Array.isArray(textOrLines)) {
        this.insertMergedLines({row: 0, column: 0}, textOrLines);
    } else {
        this.insert({row: 0, column:0}, textOrLines);
    }
};

(function() {

    oop.implement(this, EventEmitter);
    this.setValue = function(text) {
        var len = this.getLength() - 1;
        this.remove(new Range(0, 0, len, this.getLine(len).length));
        this.insert({row: 0, column: 0}, text);
    };
    this.getValue = function() {
        return this.getAllLines().join(this.getNewLineCharacter());
    };
    this.createAnchor = function(row, column) {
        return new Anchor(this, row, column);
    };
    if ("aaa".split(/a/).length === 0) {
        this.$split = function(text) {
            return text.replace(/\r\n|\r/g, "\n").split("\n");
        };
    } else {
        this.$split = function(text) {
            return text.split(/\r\n|\r|\n/);
        };
    }


    this.$detectNewLine = function(text) {
        var match = text.match(/^.*?(\r\n|\r|\n)/m);
        this.$autoNewLine = match ? match[1] : "\n";
        this._signal("changeNewLineMode");
    };
    this.getNewLineCharacter = function() {
        switch (this.$newLineMode) {
          case "windows":
            return "\r\n";
          case "unix":
            return "\n";
          default:
            return this.$autoNewLine || "\n";
        }
    };

    this.$autoNewLine = "";
    this.$newLineMode = "auto";
    this.setNewLineMode = function(newLineMode) {
        if (this.$newLineMode === newLineMode)
            return;

        this.$newLineMode = newLineMode;
        this._signal("changeNewLineMode");
    };
    this.getNewLineMode = function() {
        return this.$newLineMode;
    };
    this.isNewLine = function(text) {
        return (text == "\r\n" || text == "\r" || text == "\n");
    };
    this.getLine = function(row) {
        return this.$lines[row] || "";
    };
    this.getLines = function(firstRow, lastRow) {
        return this.$lines.slice(firstRow, lastRow + 1);
    };
    this.getAllLines = function() {
        return this.getLines(0, this.getLength());
    };
    this.getLength = function() {
        return this.$lines.length;
    };
    this.getTextRange = function(range) {
        return this.getLinesForRange(range).join(this.getNewLineCharacter());
    };
    this.getLinesForRange = function(range) {
        var lines;
        if (range.start.row === range.end.row) {
            lines = [this.getLine(range.start.row).substring(range.start.column, range.end.column)];
        } else {
            lines = this.getLines(range.start.row, range.end.row);
            lines[0] = (lines[0] || "").substring(range.start.column);
            var l = lines.length - 1;
            if (range.end.row - range.start.row == l)
                lines[l] = lines[l].substring(0, range.end.column);
        }
        return lines;
    };
    this.insertLines = function(row, lines) {
        console.warn("Use of document.insertLines is deprecated. Use the insertFullLines method instead.");
        return this.insertFullLines(row, lines);
    };
    this.removeLines = function(firstRow, lastRow) {
        console.warn("Use of document.removeLines is deprecated. Use the removeFullLines method instead.");
        return this.removeFullLines(firstRow, lastRow);
    };
    this.insertNewLine = function(position) {
        console.warn("Use of document.insertNewLine is deprecated. Use insertMergedLines(position, ['', '']) instead.");
        return this.insertMergedLines(position, ["", ""]);
    };
    this.insert = function(position, text) {
        if (this.getLength() <= 1)
            this.$detectNewLine(text);
        
        return this.insertMergedLines(position, this.$split(text));
    };
    this.insertInLine = function(position, text) {
        var start = this.clippedPos(position.row, position.column);
        var end = this.pos(position.row, position.column + text.length);
        
        this.applyDelta({
            start: start,
            end: end,
            action: "insert",
            lines: [text]
        }, true);
        
        return this.clonePos(end);
    };
    
    this.clippedPos = function(row, column) {
        var length = this.getLength();
        if (row === undefined) {
            row = length;
        } else if (row < 0) {
            row = 0;
        } else if (row >= length) {
            row = length - 1;
            column = undefined;
        }
        var line = this.getLine(row);
        if (column == undefined)
            column = line.length;
        column = Math.min(Math.max(column, 0), line.length);
        return {row: row, column: column};
    };
    
    this.clonePos = function(pos) {
        return {row: pos.row, column: pos.column};
    };
    
    this.pos = function(row, column) {
        return {row: row, column: column};
    };
    
    this.$clipPosition = function(position) {
        var length = this.getLength();
        if (position.row >= length) {
            position.row = Math.max(0, length - 1);
            position.column = this.getLine(length - 1).length;
        } else {
            position.row = Math.max(0, position.row);
            position.column = Math.min(Math.max(position.column, 0), this.getLine(position.row).length);
        }
        return position;
    };
    this.insertFullLines = function(row, lines) {
        row = Math.min(Math.max(row, 0), this.getLength());
        var column = 0;
        if (row < this.getLength()) {
            lines = lines.concat([""]);
            column = 0;
        } else {
            lines = [""].concat(lines);
            row--;
            column = this.$lines[row].length;
        }
        this.insertMergedLines({row: row, column: column}, lines);
    };    
    this.insertMergedLines = function(position, lines) {
        var start = this.clippedPos(position.row, position.column);
        var end = {
            row: start.row + lines.length - 1,
            column: (lines.length == 1 ? start.column : 0) + lines[lines.length - 1].length
        };
        
        this.applyDelta({
            start: start,
            end: end,
            action: "insert",
            lines: lines
        });
        
        return this.clonePos(end);
    };
    this.remove = function(range) {
        var start = this.clippedPos(range.start.row, range.start.column);
        var end = this.clippedPos(range.end.row, range.end.column);
        this.applyDelta({
            start: start,
            end: end,
            action: "remove",
            lines: this.getLinesForRange({start: start, end: end})
        });
        return this.clonePos(start);
    };
    this.removeInLine = function(row, startColumn, endColumn) {
        var start = this.clippedPos(row, startColumn);
        var end = this.clippedPos(row, endColumn);
        
        this.applyDelta({
            start: start,
            end: end,
            action: "remove",
            lines: this.getLinesForRange({start: start, end: end})
        }, true);
        
        return this.clonePos(start);
    };
    this.removeFullLines = function(firstRow, lastRow) {
        firstRow = Math.min(Math.max(0, firstRow), this.getLength() - 1);
        lastRow  = Math.min(Math.max(0, lastRow ), this.getLength() - 1);
        var deleteFirstNewLine = lastRow == this.getLength() - 1 && firstRow > 0;
        var deleteLastNewLine  = lastRow  < this.getLength() - 1;
        var startRow = ( deleteFirstNewLine ? firstRow - 1                  : firstRow                    );
        var startCol = ( deleteFirstNewLine ? this.getLine(startRow).length : 0                           );
        var endRow   = ( deleteLastNewLine  ? lastRow + 1                   : lastRow                     );
        var endCol   = ( deleteLastNewLine  ? 0                             : this.getLine(endRow).length ); 
        var range = new Range(startRow, startCol, endRow, endCol);
        var deletedLines = this.$lines.slice(firstRow, lastRow + 1);
        
        this.applyDelta({
            start: range.start,
            end: range.end,
            action: "remove",
            lines: this.getLinesForRange(range)
        });
        return deletedLines;
    };
    this.removeNewLine = function(row) {
        if (row < this.getLength() - 1 && row >= 0) {
            this.applyDelta({
                start: this.pos(row, this.getLine(row).length),
                end: this.pos(row + 1, 0),
                action: "remove",
                lines: ["", ""]
            });
        }
    };
    this.replace = function(range, text) {
        if (!(range instanceof Range))
            range = Range.fromPoints(range.start, range.end);
        if (text.length === 0 && range.isEmpty())
            return range.start;
        if (text == this.getTextRange(range))
            return range.end;

        this.remove(range);
        var end;
        if (text) {
            end = this.insert(range.start, text);
        }
        else {
            end = range.start;
        }
        
        return end;
    };
    this.applyDeltas = function(deltas) {
        for (var i=0; i<deltas.length; i++) {
            this.applyDelta(deltas[i]);
        }
    };
    this.revertDeltas = function(deltas) {
        for (var i=deltas.length-1; i>=0; i--) {
            this.revertDelta(deltas[i]);
        }
    };
    this.applyDelta = function(delta, doNotValidate) {
        var isInsert = delta.action == "insert";
        if (isInsert ? delta.lines.length <= 1 && !delta.lines[0]
            : !Range.comparePoints(delta.start, delta.end)) {
            return;
        }
        
        if (isInsert && delta.lines.length > 20000)
            this.$splitAndapplyLargeDelta(delta, 20000);
        applyDelta(this.$lines, delta, doNotValidate);
        this._signal("change", delta);
    };
    
    this.$splitAndapplyLargeDelta = function(delta, MAX) {
        var lines = delta.lines;
        var l = lines.length;
        var row = delta.start.row; 
        var column = delta.start.column;
        var from = 0, to = 0;
        do {
            from = to;
            to += MAX - 1;
            var chunk = lines.slice(from, to);
            if (to > l) {
                delta.lines = chunk;
                delta.start.row = row + from;
                delta.start.column = column;
                break;
            }
            chunk.push("");
            this.applyDelta({
                start: this.pos(row + from, column),
                end: this.pos(row + to, column = 0),
                action: delta.action,
                lines: chunk
            }, true);
        } while(true);
    };
    this.revertDelta = function(delta) {
        this.applyDelta({
            start: this.clonePos(delta.start),
            end: this.clonePos(delta.end),
            action: (delta.action == "insert" ? "remove" : "insert"),
            lines: delta.lines.slice()
        });
    };
    this.indexToPosition = function(index, startRow) {
        var lines = this.$lines || this.getAllLines();
        var newlineLength = this.getNewLineCharacter().length;
        for (var i = startRow || 0, l = lines.length; i < l; i++) {
            index -= lines[i].length + newlineLength;
            if (index < 0)
                return {row: i, column: index + lines[i].length + newlineLength};
        }
        return {row: l-1, column: lines[l-1].length};
    };
    this.positionToIndex = function(pos, startRow) {
        var lines = this.$lines || this.getAllLines();
        var newlineLength = this.getNewLineCharacter().length;
        var index = 0;
        var row = Math.min(pos.row, lines.length);
        for (var i = startRow || 0; i < row; ++i)
            index += lines[i].length + newlineLength;

        return index + pos.column;
    };

}).call(Document.prototype);

exports.Document = Document;
});

ace.define("ace/background_tokenizer",["require","exports","module","ace/lib/oop","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;

var BackgroundTokenizer = function(tokenizer, editor) {
    this.running = false;
    this.lines = [];
    this.states = [];
    this.currentLine = 0;
    this.tokenizer = tokenizer;

    var self = this;

    this.$worker = function() {
        if (!self.running) { return; }

        var workerStart = new Date();
        var currentLine = self.currentLine;
        var endLine = -1;
        var doc = self.doc;

        var startLine = currentLine;
        while (self.lines[currentLine])
            currentLine++;
        
        var len = doc.getLength();
        var processedLines = 0;
        self.running = false;
        while (currentLine < len) {
            self.$tokenizeRow(currentLine);
            endLine = currentLine;
            do {
                currentLine++;
            } while (self.lines[currentLine]);
            processedLines ++;
            if ((processedLines % 5 === 0) && (new Date() - workerStart) > 20) {                
                self.running = setTimeout(self.$worker, 20);
                break;
            }
        }
        self.currentLine = currentLine;
        
        if (endLine == -1)
            endLine = currentLine;

        if (startLine <= endLine)
            self.fireUpdateEvent(startLine, endLine);
    };
};

(function(){

    oop.implement(this, EventEmitter);
    this.setTokenizer = function(tokenizer) {
        this.tokenizer = tokenizer;
        this.lines = [];
        this.states = [];

        this.start(0);
    };
    this.setDocument = function(doc) {
        this.doc = doc;
        this.lines = [];
        this.states = [];

        this.stop();
    };
    this.fireUpdateEvent = function(firstRow, lastRow) {
        var data = {
            first: firstRow,
            last: lastRow
        };
        this._signal("update", {data: data});
    };
    this.start = function(startRow) {
        this.currentLine = Math.min(startRow || 0, this.currentLine, this.doc.getLength());
        this.lines.splice(this.currentLine, this.lines.length);
        this.states.splice(this.currentLine, this.states.length);

        this.stop();
        this.running = setTimeout(this.$worker, 700);
    };
    
    this.scheduleStart = function() {
        if (!this.running)
            this.running = setTimeout(this.$worker, 700);
    };

    this.$updateOnChange = function(delta) {
        var startRow = delta.start.row;
        var len = delta.end.row - startRow;

        if (len === 0) {
            this.lines[startRow] = null;
        } else if (delta.action == "remove") {
            this.lines.splice(startRow, len + 1, null);
            this.states.splice(startRow, len + 1, null);
        } else {
            var args = Array(len + 1);
            args.unshift(startRow, 1);
            this.lines.splice.apply(this.lines, args);
            this.states.splice.apply(this.states, args);
        }

        this.currentLine = Math.min(startRow, this.currentLine, this.doc.getLength());

        this.stop();
    };
    this.stop = function() {
        if (this.running)
            clearTimeout(this.running);
        this.running = false;
    };
    this.getTokens = function(row) {
        return this.lines[row] || this.$tokenizeRow(row);
    };
    this.getState = function(row) {
        if (this.currentLine == row)
            this.$tokenizeRow(row);
        return this.states[row] || "start";
    };

    this.$tokenizeRow = function(row) {
        var line = this.doc.getLine(row);
        var state = this.states[row - 1];

        var data = this.tokenizer.getLineTokens(line, state, row);

        if (this.states[row] + "" !== data.state + "") {
            this.states[row] = data.state;
            this.lines[row + 1] = null;
            if (this.currentLine > row + 1)
                this.currentLine = row + 1;
        } else if (this.currentLine == row) {
            this.currentLine = row + 1;
        }

        return this.lines[row] = data.tokens;
    };

}).call(BackgroundTokenizer.prototype);

exports.BackgroundTokenizer = BackgroundTokenizer;
});

ace.define("ace/search_highlight",["require","exports","module","ace/lib/lang","ace/lib/oop","ace/range"], function(acequire, exports, module) {
"use strict";

var lang = acequire("./lib/lang");
var oop = acequire("./lib/oop");
var Range = acequire("./range").Range;

var SearchHighlight = function(regExp, clazz, type) {
    this.setRegexp(regExp);
    this.clazz = clazz;
    this.type = type || "text";
};

(function() {
    this.MAX_RANGES = 500;
    
    this.setRegexp = function(regExp) {
        if (this.regExp+"" == regExp+"")
            return;
        this.regExp = regExp;
        this.cache = [];
    };

    this.update = function(html, markerLayer, session, config) {
        if (!this.regExp)
            return;
        var start = config.firstRow, end = config.lastRow;

        for (var i = start; i <= end; i++) {
            var ranges = this.cache[i];
            if (ranges == null) {
                ranges = lang.getMatchOffsets(session.getLine(i), this.regExp);
                if (ranges.length > this.MAX_RANGES)
                    ranges = ranges.slice(0, this.MAX_RANGES);
                ranges = ranges.map(function(match) {
                    return new Range(i, match.offset, i, match.offset + match.length);
                });
                this.cache[i] = ranges.length ? ranges : "";
            }

            for (var j = ranges.length; j --; ) {
                markerLayer.drawSingleLineMarker(
                    html, ranges[j].toScreenRange(session), this.clazz, config);
            }
        }
    };

}).call(SearchHighlight.prototype);

exports.SearchHighlight = SearchHighlight;
});

ace.define("ace/edit_session/fold_line",["require","exports","module","ace/range"], function(acequire, exports, module) {
"use strict";

var Range = acequire("../range").Range;
function FoldLine(foldData, folds) {
    this.foldData = foldData;
    if (Array.isArray(folds)) {
        this.folds = folds;
    } else {
        folds = this.folds = [ folds ];
    }

    var last = folds[folds.length - 1];
    this.range = new Range(folds[0].start.row, folds[0].start.column,
                           last.end.row, last.end.column);
    this.start = this.range.start;
    this.end   = this.range.end;

    this.folds.forEach(function(fold) {
        fold.setFoldLine(this);
    }, this);
}

(function() {
    this.shiftRow = function(shift) {
        this.start.row += shift;
        this.end.row += shift;
        this.folds.forEach(function(fold) {
            fold.start.row += shift;
            fold.end.row += shift;
        });
    };

    this.addFold = function(fold) {
        if (fold.sameRow) {
            if (fold.start.row < this.startRow || fold.endRow > this.endRow) {
                throw new Error("Can't add a fold to this FoldLine as it has no connection");
            }
            this.folds.push(fold);
            this.folds.sort(function(a, b) {
                return -a.range.compareEnd(b.start.row, b.start.column);
            });
            if (this.range.compareEnd(fold.start.row, fold.start.column) > 0) {
                this.end.row = fold.end.row;
                this.end.column =  fold.end.column;
            } else if (this.range.compareStart(fold.end.row, fold.end.column) < 0) {
                this.start.row = fold.start.row;
                this.start.column = fold.start.column;
            }
        } else if (fold.start.row == this.end.row) {
            this.folds.push(fold);
            this.end.row = fold.end.row;
            this.end.column = fold.end.column;
        } else if (fold.end.row == this.start.row) {
            this.folds.unshift(fold);
            this.start.row = fold.start.row;
            this.start.column = fold.start.column;
        } else {
            throw new Error("Trying to add fold to FoldRow that doesn't have a matching row");
        }
        fold.foldLine = this;
    };

    this.containsRow = function(row) {
        return row >= this.start.row && row <= this.end.row;
    };

    this.walk = function(callback, endRow, endColumn) {
        var lastEnd = 0,
            folds = this.folds,
            fold,
            cmp, stop, isNewRow = true;

        if (endRow == null) {
            endRow = this.end.row;
            endColumn = this.end.column;
        }

        for (var i = 0; i < folds.length; i++) {
            fold = folds[i];

            cmp = fold.range.compareStart(endRow, endColumn);
            if (cmp == -1) {
                callback(null, endRow, endColumn, lastEnd, isNewRow);
                return;
            }

            stop = callback(null, fold.start.row, fold.start.column, lastEnd, isNewRow);
            stop = !stop && callback(fold.placeholder, fold.start.row, fold.start.column, lastEnd);
            if (stop || cmp === 0) {
                return;
            }
            isNewRow = !fold.sameRow;
            lastEnd = fold.end.column;
        }
        callback(null, endRow, endColumn, lastEnd, isNewRow);
    };

    this.getNextFoldTo = function(row, column) {
        var fold, cmp;
        for (var i = 0; i < this.folds.length; i++) {
            fold = this.folds[i];
            cmp = fold.range.compareEnd(row, column);
            if (cmp == -1) {
                return {
                    fold: fold,
                    kind: "after"
                };
            } else if (cmp === 0) {
                return {
                    fold: fold,
                    kind: "inside"
                };
            }
        }
        return null;
    };

    this.addRemoveChars = function(row, column, len) {
        var ret = this.getNextFoldTo(row, column),
            fold, folds;
        if (ret) {
            fold = ret.fold;
            if (ret.kind == "inside"
                && fold.start.column != column
                && fold.start.row != row)
            {
                window.console && window.console.log(row, column, fold);
            } else if (fold.start.row == row) {
                folds = this.folds;
                var i = folds.indexOf(fold);
                if (i === 0) {
                    this.start.column += len;
                }
                for (i; i < folds.length; i++) {
                    fold = folds[i];
                    fold.start.column += len;
                    if (!fold.sameRow) {
                        return;
                    }
                    fold.end.column += len;
                }
                this.end.column += len;
            }
        }
    };

    this.split = function(row, column) {
        var pos = this.getNextFoldTo(row, column);
        
        if (!pos || pos.kind == "inside")
            return null;
            
        var fold = pos.fold;
        var folds = this.folds;
        var foldData = this.foldData;
        
        var i = folds.indexOf(fold);
        var foldBefore = folds[i - 1];
        this.end.row = foldBefore.end.row;
        this.end.column = foldBefore.end.column;
        folds = folds.splice(i, folds.length - i);

        var newFoldLine = new FoldLine(foldData, folds);
        foldData.splice(foldData.indexOf(this) + 1, 0, newFoldLine);
        return newFoldLine;
    };

    this.merge = function(foldLineNext) {
        var folds = foldLineNext.folds;
        for (var i = 0; i < folds.length; i++) {
            this.addFold(folds[i]);
        }
        var foldData = this.foldData;
        foldData.splice(foldData.indexOf(foldLineNext), 1);
    };

    this.toString = function() {
        var ret = [this.range.toString() + ": [" ];

        this.folds.forEach(function(fold) {
            ret.push("  " + fold.toString());
        });
        ret.push("]");
        return ret.join("\n");
    };

    this.idxToPosition = function(idx) {
        var lastFoldEndColumn = 0;

        for (var i = 0; i < this.folds.length; i++) {
            var fold = this.folds[i];

            idx -= fold.start.column - lastFoldEndColumn;
            if (idx < 0) {
                return {
                    row: fold.start.row,
                    column: fold.start.column + idx
                };
            }

            idx -= fold.placeholder.length;
            if (idx < 0) {
                return fold.start;
            }

            lastFoldEndColumn = fold.end.column;
        }

        return {
            row: this.end.row,
            column: this.end.column + idx
        };
    };
}).call(FoldLine.prototype);

exports.FoldLine = FoldLine;
});

ace.define("ace/range_list",["require","exports","module","ace/range"], function(acequire, exports, module) {
"use strict";
var Range = acequire("./range").Range;
var comparePoints = Range.comparePoints;

var RangeList = function() {
    this.ranges = [];
};

(function() {
    this.comparePoints = comparePoints;

    this.pointIndex = function(pos, excludeEdges, startIndex) {
        var list = this.ranges;

        for (var i = startIndex || 0; i < list.length; i++) {
            var range = list[i];
            var cmpEnd = comparePoints(pos, range.end);
            if (cmpEnd > 0)
                continue;
            var cmpStart = comparePoints(pos, range.start);
            if (cmpEnd === 0)
                return excludeEdges && cmpStart !== 0 ? -i-2 : i;
            if (cmpStart > 0 || (cmpStart === 0 && !excludeEdges))
                return i;

            return -i-1;
        }
        return -i - 1;
    };

    this.add = function(range) {
        var excludeEdges = !range.isEmpty();
        var startIndex = this.pointIndex(range.start, excludeEdges);
        if (startIndex < 0)
            startIndex = -startIndex - 1;

        var endIndex = this.pointIndex(range.end, excludeEdges, startIndex);

        if (endIndex < 0)
            endIndex = -endIndex - 1;
        else
            endIndex++;
        return this.ranges.splice(startIndex, endIndex - startIndex, range);
    };

    this.addList = function(list) {
        var removed = [];
        for (var i = list.length; i--; ) {
            removed.push.apply(removed, this.add(list[i]));
        }
        return removed;
    };

    this.substractPoint = function(pos) {
        var i = this.pointIndex(pos);

        if (i >= 0)
            return this.ranges.splice(i, 1);
    };
    this.merge = function() {
        var removed = [];
        var list = this.ranges;
        
        list = list.sort(function(a, b) {
            return comparePoints(a.start, b.start);
        });
        
        var next = list[0], range;
        for (var i = 1; i < list.length; i++) {
            range = next;
            next = list[i];
            var cmp = comparePoints(range.end, next.start);
            if (cmp < 0)
                continue;

            if (cmp == 0 && !range.isEmpty() && !next.isEmpty())
                continue;

            if (comparePoints(range.end, next.end) < 0) {
                range.end.row = next.end.row;
                range.end.column = next.end.column;
            }

            list.splice(i, 1);
            removed.push(next);
            next = range;
            i--;
        }
        
        this.ranges = list;

        return removed;
    };

    this.contains = function(row, column) {
        return this.pointIndex({row: row, column: column}) >= 0;
    };

    this.containsPoint = function(pos) {
        return this.pointIndex(pos) >= 0;
    };

    this.rangeAtPoint = function(pos) {
        var i = this.pointIndex(pos);
        if (i >= 0)
            return this.ranges[i];
    };


    this.clipRows = function(startRow, endRow) {
        var list = this.ranges;
        if (list[0].start.row > endRow || list[list.length - 1].start.row < startRow)
            return [];

        var startIndex = this.pointIndex({row: startRow, column: 0});
        if (startIndex < 0)
            startIndex = -startIndex - 1;
        var endIndex = this.pointIndex({row: endRow, column: 0}, startIndex);
        if (endIndex < 0)
            endIndex = -endIndex - 1;

        var clipped = [];
        for (var i = startIndex; i < endIndex; i++) {
            clipped.push(list[i]);
        }
        return clipped;
    };

    this.removeAll = function() {
        return this.ranges.splice(0, this.ranges.length);
    };

    this.attach = function(session) {
        if (this.session)
            this.detach();

        this.session = session;
        this.onChange = this.$onChange.bind(this);

        this.session.on('change', this.onChange);
    };

    this.detach = function() {
        if (!this.session)
            return;
        this.session.removeListener('change', this.onChange);
        this.session = null;
    };

    this.$onChange = function(delta) {
        if (delta.action == "insert"){
            var start = delta.start;
            var end = delta.end;
        } else {
            var end = delta.start;
            var start = delta.end;
        }
        var startRow = start.row;
        var endRow = end.row;
        var lineDif = endRow - startRow;

        var colDiff = -start.column + end.column;
        var ranges = this.ranges;

        for (var i = 0, n = ranges.length; i < n; i++) {
            var r = ranges[i];
            if (r.end.row < startRow)
                continue;
            if (r.start.row > startRow)
                break;

            if (r.start.row == startRow && r.start.column >= start.column ) {
                if (r.start.column == start.column && this.$insertRight) {
                } else {
                    r.start.column += colDiff;
                    r.start.row += lineDif;
                }
            }
            if (r.end.row == startRow && r.end.column >= start.column) {
                if (r.end.column == start.column && this.$insertRight) {
                    continue;
                }
                if (r.end.column == start.column && colDiff > 0 && i < n - 1) {                
                    if (r.end.column > r.start.column && r.end.column == ranges[i+1].start.column)
                        r.end.column -= colDiff;
                }
                r.end.column += colDiff;
                r.end.row += lineDif;
            }
        }

        if (lineDif != 0 && i < n) {
            for (; i < n; i++) {
                var r = ranges[i];
                r.start.row += lineDif;
                r.end.row += lineDif;
            }
        }
    };

}).call(RangeList.prototype);

exports.RangeList = RangeList;
});

ace.define("ace/edit_session/fold",["require","exports","module","ace/range","ace/range_list","ace/lib/oop"], function(acequire, exports, module) {
"use strict";

var Range = acequire("../range").Range;
var RangeList = acequire("../range_list").RangeList;
var oop = acequire("../lib/oop");
var Fold = exports.Fold = function(range, placeholder) {
    this.foldLine = null;
    this.placeholder = placeholder;
    this.range = range;
    this.start = range.start;
    this.end = range.end;

    this.sameRow = range.start.row == range.end.row;
    this.subFolds = this.ranges = [];
};

oop.inherits(Fold, RangeList);

(function() {

    this.toString = function() {
        return '"' + this.placeholder + '" ' + this.range.toString();
    };

    this.setFoldLine = function(foldLine) {
        this.foldLine = foldLine;
        this.subFolds.forEach(function(fold) {
            fold.setFoldLine(foldLine);
        });
    };

    this.clone = function() {
        var range = this.range.clone();
        var fold = new Fold(range, this.placeholder);
        this.subFolds.forEach(function(subFold) {
            fold.subFolds.push(subFold.clone());
        });
        fold.collapseChildren = this.collapseChildren;
        return fold;
    };

    this.addSubFold = function(fold) {
        if (this.range.isEqual(fold))
            return;

        if (!this.range.containsRange(fold))
            throw new Error("A fold can't intersect already existing fold" + fold.range + this.range);
        consumeRange(fold, this.start);

        var row = fold.start.row, column = fold.start.column;
        for (var i = 0, cmp = -1; i < this.subFolds.length; i++) {
            cmp = this.subFolds[i].range.compare(row, column);
            if (cmp != 1)
                break;
        }
        var afterStart = this.subFolds[i];

        if (cmp == 0)
            return afterStart.addSubFold(fold);
        var row = fold.range.end.row, column = fold.range.end.column;
        for (var j = i, cmp = -1; j < this.subFolds.length; j++) {
            cmp = this.subFolds[j].range.compare(row, column);
            if (cmp != 1)
                break;
        }
        var afterEnd = this.subFolds[j];

        if (cmp == 0)
            throw new Error("A fold can't intersect already existing fold" + fold.range + this.range);

        var consumedFolds = this.subFolds.splice(i, j - i, fold);
        fold.setFoldLine(this.foldLine);

        return fold;
    };
    
    this.restoreRange = function(range) {
        return restoreRange(range, this.start);
    };

}).call(Fold.prototype);

function consumePoint(point, anchor) {
    point.row -= anchor.row;
    if (point.row == 0)
        point.column -= anchor.column;
}
function consumeRange(range, anchor) {
    consumePoint(range.start, anchor);
    consumePoint(range.end, anchor);
}
function restorePoint(point, anchor) {
    if (point.row == 0)
        point.column += anchor.column;
    point.row += anchor.row;
}
function restoreRange(range, anchor) {
    restorePoint(range.start, anchor);
    restorePoint(range.end, anchor);
}

});

ace.define("ace/edit_session/folding",["require","exports","module","ace/range","ace/edit_session/fold_line","ace/edit_session/fold","ace/token_iterator"], function(acequire, exports, module) {
"use strict";

var Range = acequire("../range").Range;
var FoldLine = acequire("./fold_line").FoldLine;
var Fold = acequire("./fold").Fold;
var TokenIterator = acequire("../token_iterator").TokenIterator;

function Folding() {
    this.getFoldAt = function(row, column, side) {
        var foldLine = this.getFoldLine(row);
        if (!foldLine)
            return null;

        var folds = foldLine.folds;
        for (var i = 0; i < folds.length; i++) {
            var fold = folds[i];
            if (fold.range.contains(row, column)) {
                if (side == 1 && fold.range.isEnd(row, column)) {
                    continue;
                } else if (side == -1 && fold.range.isStart(row, column)) {
                    continue;
                }
                return fold;
            }
        }
    };
    this.getFoldsInRange = function(range) {
        var start = range.start;
        var end = range.end;
        var foldLines = this.$foldData;
        var foundFolds = [];

        start.column += 1;
        end.column -= 1;

        for (var i = 0; i < foldLines.length; i++) {
            var cmp = foldLines[i].range.compareRange(range);
            if (cmp == 2) {
                continue;
            }
            else if (cmp == -2) {
                break;
            }

            var folds = foldLines[i].folds;
            for (var j = 0; j < folds.length; j++) {
                var fold = folds[j];
                cmp = fold.range.compareRange(range);
                if (cmp == -2) {
                    break;
                } else if (cmp == 2) {
                    continue;
                } else
                if (cmp == 42) {
                    break;
                }
                foundFolds.push(fold);
            }
        }
        start.column -= 1;
        end.column += 1;

        return foundFolds;
    };

    this.getFoldsInRangeList = function(ranges) {
        if (Array.isArray(ranges)) {
            var folds = [];
            ranges.forEach(function(range) {
                folds = folds.concat(this.getFoldsInRange(range));
            }, this);
        } else {
            var folds = this.getFoldsInRange(ranges);
        }
        return folds;
    };
    this.getAllFolds = function() {
        var folds = [];
        var foldLines = this.$foldData;
        
        for (var i = 0; i < foldLines.length; i++)
            for (var j = 0; j < foldLines[i].folds.length; j++)
                folds.push(foldLines[i].folds[j]);

        return folds;
    };
    this.getFoldStringAt = function(row, column, trim, foldLine) {
        foldLine = foldLine || this.getFoldLine(row);
        if (!foldLine)
            return null;

        var lastFold = {
            end: { column: 0 }
        };
        var str, fold;
        for (var i = 0; i < foldLine.folds.length; i++) {
            fold = foldLine.folds[i];
            var cmp = fold.range.compareEnd(row, column);
            if (cmp == -1) {
                str = this
                    .getLine(fold.start.row)
                    .substring(lastFold.end.column, fold.start.column);
                break;
            }
            else if (cmp === 0) {
                return null;
            }
            lastFold = fold;
        }
        if (!str)
            str = this.getLine(fold.start.row).substring(lastFold.end.column);

        if (trim == -1)
            return str.substring(0, column - lastFold.end.column);
        else if (trim == 1)
            return str.substring(column - lastFold.end.column);
        else
            return str;
    };

    this.getFoldLine = function(docRow, startFoldLine) {
        var foldData = this.$foldData;
        var i = 0;
        if (startFoldLine)
            i = foldData.indexOf(startFoldLine);
        if (i == -1)
            i = 0;
        for (i; i < foldData.length; i++) {
            var foldLine = foldData[i];
            if (foldLine.start.row <= docRow && foldLine.end.row >= docRow) {
                return foldLine;
            } else if (foldLine.end.row > docRow) {
                return null;
            }
        }
        return null;
    };
    this.getNextFoldLine = function(docRow, startFoldLine) {
        var foldData = this.$foldData;
        var i = 0;
        if (startFoldLine)
            i = foldData.indexOf(startFoldLine);
        if (i == -1)
            i = 0;
        for (i; i < foldData.length; i++) {
            var foldLine = foldData[i];
            if (foldLine.end.row >= docRow) {
                return foldLine;
            }
        }
        return null;
    };

    this.getFoldedRowCount = function(first, last) {
        var foldData = this.$foldData, rowCount = last-first+1;
        for (var i = 0; i < foldData.length; i++) {
            var foldLine = foldData[i],
                end = foldLine.end.row,
                start = foldLine.start.row;
            if (end >= last) {
                if (start < last) {
                    if (start >= first)
                        rowCount -= last-start;
                    else
                        rowCount = 0; // in one fold
                }
                break;
            } else if (end >= first){
                if (start >= first) // fold inside range
                    rowCount -=  end-start;
                else
                    rowCount -=  end-first+1;
            }
        }
        return rowCount;
    };

    this.$addFoldLine = function(foldLine) {
        this.$foldData.push(foldLine);
        this.$foldData.sort(function(a, b) {
            return a.start.row - b.start.row;
        });
        return foldLine;
    };
    this.addFold = function(placeholder, range) {
        var foldData = this.$foldData;
        var added = false;
        var fold;
        
        if (placeholder instanceof Fold)
            fold = placeholder;
        else {
            fold = new Fold(range, placeholder);
            fold.collapseChildren = range.collapseChildren;
        }
        this.$clipRangeToDocument(fold.range);

        var startRow = fold.start.row;
        var startColumn = fold.start.column;
        var endRow = fold.end.row;
        var endColumn = fold.end.column;
        if (!(startRow < endRow || 
            startRow == endRow && startColumn <= endColumn - 2))
            throw new Error("The range has to be at least 2 characters width");

        var startFold = this.getFoldAt(startRow, startColumn, 1);
        var endFold = this.getFoldAt(endRow, endColumn, -1);
        if (startFold && endFold == startFold)
            return startFold.addSubFold(fold);

        if (startFold && !startFold.range.isStart(startRow, startColumn))
            this.removeFold(startFold);
        
        if (endFold && !endFold.range.isEnd(endRow, endColumn))
            this.removeFold(endFold);
        var folds = this.getFoldsInRange(fold.range);
        if (folds.length > 0) {
            this.removeFolds(folds);
            folds.forEach(function(subFold) {
                fold.addSubFold(subFold);
            });
        }

        for (var i = 0; i < foldData.length; i++) {
            var foldLine = foldData[i];
            if (endRow == foldLine.start.row) {
                foldLine.addFold(fold);
                added = true;
                break;
            } else if (startRow == foldLine.end.row) {
                foldLine.addFold(fold);
                added = true;
                if (!fold.sameRow) {
                    var foldLineNext = foldData[i + 1];
                    if (foldLineNext && foldLineNext.start.row == endRow) {
                        foldLine.merge(foldLineNext);
                        break;
                    }
                }
                break;
            } else if (endRow <= foldLine.start.row) {
                break;
            }
        }

        if (!added)
            foldLine = this.$addFoldLine(new FoldLine(this.$foldData, fold));

        if (this.$useWrapMode)
            this.$updateWrapData(foldLine.start.row, foldLine.start.row);
        else
            this.$updateRowLengthCache(foldLine.start.row, foldLine.start.row);
        this.$modified = true;
        this._signal("changeFold", { data: fold, action: "add" });

        return fold;
    };

    this.addFolds = function(folds) {
        folds.forEach(function(fold) {
            this.addFold(fold);
        }, this);
    };

    this.removeFold = function(fold) {
        var foldLine = fold.foldLine;
        var startRow = foldLine.start.row;
        var endRow = foldLine.end.row;

        var foldLines = this.$foldData;
        var folds = foldLine.folds;
        if (folds.length == 1) {
            foldLines.splice(foldLines.indexOf(foldLine), 1);
        } else
        if (foldLine.range.isEnd(fold.end.row, fold.end.column)) {
            folds.pop();
            foldLine.end.row = folds[folds.length - 1].end.row;
            foldLine.end.column = folds[folds.length - 1].end.column;
        } else
        if (foldLine.range.isStart(fold.start.row, fold.start.column)) {
            folds.shift();
            foldLine.start.row = folds[0].start.row;
            foldLine.start.column = folds[0].start.column;
        } else
        if (fold.sameRow) {
            folds.splice(folds.indexOf(fold), 1);
        } else
        {
            var newFoldLine = foldLine.split(fold.start.row, fold.start.column);
            folds = newFoldLine.folds;
            folds.shift();
            newFoldLine.start.row = folds[0].start.row;
            newFoldLine.start.column = folds[0].start.column;
        }

        if (!this.$updating) {
            if (this.$useWrapMode)
                this.$updateWrapData(startRow, endRow);
            else
                this.$updateRowLengthCache(startRow, endRow);
        }
        this.$modified = true;
        this._signal("changeFold", { data: fold, action: "remove" });
    };

    this.removeFolds = function(folds) {
        var cloneFolds = [];
        for (var i = 0; i < folds.length; i++) {
            cloneFolds.push(folds[i]);
        }

        cloneFolds.forEach(function(fold) {
            this.removeFold(fold);
        }, this);
        this.$modified = true;
    };

    this.expandFold = function(fold) {
        this.removeFold(fold);
        fold.subFolds.forEach(function(subFold) {
            fold.restoreRange(subFold);
            this.addFold(subFold);
        }, this);
        if (fold.collapseChildren > 0) {
            this.foldAll(fold.start.row+1, fold.end.row, fold.collapseChildren-1);
        }
        fold.subFolds = [];
    };

    this.expandFolds = function(folds) {
        folds.forEach(function(fold) {
            this.expandFold(fold);
        }, this);
    };

    this.unfold = function(location, expandInner) {
        var range, folds;
        if (location == null) {
            range = new Range(0, 0, this.getLength(), 0);
            expandInner = true;
        } else if (typeof location == "number")
            range = new Range(location, 0, location, this.getLine(location).length);
        else if ("row" in location)
            range = Range.fromPoints(location, location);
        else
            range = location;
        
        folds = this.getFoldsInRangeList(range);
        if (expandInner) {
            this.removeFolds(folds);
        } else {
            var subFolds = folds;
            while (subFolds.length) {
                this.expandFolds(subFolds);
                subFolds = this.getFoldsInRangeList(range);
            }
        }
        if (folds.length)
            return folds;
    };
    this.isRowFolded = function(docRow, startFoldRow) {
        return !!this.getFoldLine(docRow, startFoldRow);
    };

    this.getRowFoldEnd = function(docRow, startFoldRow) {
        var foldLine = this.getFoldLine(docRow, startFoldRow);
        return foldLine ? foldLine.end.row : docRow;
    };

    this.getRowFoldStart = function(docRow, startFoldRow) {
        var foldLine = this.getFoldLine(docRow, startFoldRow);
        return foldLine ? foldLine.start.row : docRow;
    };

    this.getFoldDisplayLine = function(foldLine, endRow, endColumn, startRow, startColumn) {
        if (startRow == null)
            startRow = foldLine.start.row;
        if (startColumn == null)
            startColumn = 0;
        if (endRow == null)
            endRow = foldLine.end.row;
        if (endColumn == null)
            endColumn = this.getLine(endRow).length;
        var doc = this.doc;
        var textLine = "";

        foldLine.walk(function(placeholder, row, column, lastColumn) {
            if (row < startRow)
                return;
            if (row == startRow) {
                if (column < startColumn)
                    return;
                lastColumn = Math.max(startColumn, lastColumn);
            }

            if (placeholder != null) {
                textLine += placeholder;
            } else {
                textLine += doc.getLine(row).substring(lastColumn, column);
            }
        }, endRow, endColumn);
        return textLine;
    };

    this.getDisplayLine = function(row, endColumn, startRow, startColumn) {
        var foldLine = this.getFoldLine(row);

        if (!foldLine) {
            var line;
            line = this.doc.getLine(row);
            return line.substring(startColumn || 0, endColumn || line.length);
        } else {
            return this.getFoldDisplayLine(
                foldLine, row, endColumn, startRow, startColumn);
        }
    };

    this.$cloneFoldData = function() {
        var fd = [];
        fd = this.$foldData.map(function(foldLine) {
            var folds = foldLine.folds.map(function(fold) {
                return fold.clone();
            });
            return new FoldLine(fd, folds);
        });

        return fd;
    };

    this.toggleFold = function(tryToUnfold) {
        var selection = this.selection;
        var range = selection.getRange();
        var fold;
        var bracketPos;

        if (range.isEmpty()) {
            var cursor = range.start;
            fold = this.getFoldAt(cursor.row, cursor.column);

            if (fold) {
                this.expandFold(fold);
                return;
            } else if (bracketPos = this.findMatchingBracket(cursor)) {
                if (range.comparePoint(bracketPos) == 1) {
                    range.end = bracketPos;
                } else {
                    range.start = bracketPos;
                    range.start.column++;
                    range.end.column--;
                }
            } else if (bracketPos = this.findMatchingBracket({row: cursor.row, column: cursor.column + 1})) {
                if (range.comparePoint(bracketPos) == 1)
                    range.end = bracketPos;
                else
                    range.start = bracketPos;

                range.start.column++;
            } else {
                range = this.getCommentFoldRange(cursor.row, cursor.column) || range;
            }
        } else {
            var folds = this.getFoldsInRange(range);
            if (tryToUnfold && folds.length) {
                this.expandFolds(folds);
                return;
            } else if (folds.length == 1 ) {
                fold = folds[0];
            }
        }

        if (!fold)
            fold = this.getFoldAt(range.start.row, range.start.column);

        if (fold && fold.range.toString() == range.toString()) {
            this.expandFold(fold);
            return;
        }

        var placeholder = "...";
        if (!range.isMultiLine()) {
            placeholder = this.getTextRange(range);
            if (placeholder.length < 4)
                return;
            placeholder = placeholder.trim().substring(0, 2) + "..";
        }

        this.addFold(placeholder, range);
    };

    this.getCommentFoldRange = function(row, column, dir) {
        var iterator = new TokenIterator(this, row, column);
        var token = iterator.getCurrentToken();
        var type = token.type;
        if (token && /^comment|string/.test(type)) {
            type = type.match(/comment|string/)[0];
            if (type == "comment")
                type += "|doc-start";
            var re = new RegExp(type);
            var range = new Range();
            if (dir != 1) {
                do {
                    token = iterator.stepBackward();
                } while (token && re.test(token.type));
                iterator.stepForward();
            }
            
            range.start.row = iterator.getCurrentTokenRow();
            range.start.column = iterator.getCurrentTokenColumn() + 2;

            iterator = new TokenIterator(this, row, column);
            
            if (dir != -1) {
                var lastRow = -1;
                do {
                    token = iterator.stepForward();
                    if (lastRow == -1) {
                        var state = this.getState(iterator.$row);
                        if (!re.test(state))
                            lastRow = iterator.$row;
                    } else if (iterator.$row > lastRow) {
                        break;
                    }
                } while (token && re.test(token.type));
                token = iterator.stepBackward();
            } else
                token = iterator.getCurrentToken();

            range.end.row = iterator.getCurrentTokenRow();
            range.end.column = iterator.getCurrentTokenColumn() + token.value.length - 2;
            return range;
        }
    };

    this.foldAll = function(startRow, endRow, depth) {
        if (depth == undefined)
            depth = 100000; // JSON.stringify doesn't hanle Infinity
        var foldWidgets = this.foldWidgets;
        if (!foldWidgets)
            return; // mode doesn't support folding
        endRow = endRow || this.getLength();
        startRow = startRow || 0;
        for (var row = startRow; row < endRow; row++) {
            if (foldWidgets[row] == null)
                foldWidgets[row] = this.getFoldWidget(row);
            if (foldWidgets[row] != "start")
                continue;

            var range = this.getFoldWidgetRange(row);
            if (range && range.isMultiLine()
                && range.end.row <= endRow
                && range.start.row >= startRow
            ) {
                row = range.end.row;
                try {
                    var fold = this.addFold("...", range);
                    if (fold)
                        fold.collapseChildren = depth;
                } catch(e) {}
            }
        }
    };
    this.$foldStyles = {
        "manual": 1,
        "markbegin": 1,
        "markbeginend": 1
    };
    this.$foldStyle = "markbegin";
    this.setFoldStyle = function(style) {
        if (!this.$foldStyles[style])
            throw new Error("invalid fold style: " + style + "[" + Object.keys(this.$foldStyles).join(", ") + "]");
        
        if (this.$foldStyle == style)
            return;

        this.$foldStyle = style;
        
        if (style == "manual")
            this.unfold();
        var mode = this.$foldMode;
        this.$setFolding(null);
        this.$setFolding(mode);
    };

    this.$setFolding = function(foldMode) {
        if (this.$foldMode == foldMode)
            return;
            
        this.$foldMode = foldMode;
        
        this.off('change', this.$updateFoldWidgets);
        this.off('tokenizerUpdate', this.$tokenizerUpdateFoldWidgets);
        this._signal("changeAnnotation");
        
        if (!foldMode || this.$foldStyle == "manual") {
            this.foldWidgets = null;
            return;
        }
        
        this.foldWidgets = [];
        this.getFoldWidget = foldMode.getFoldWidget.bind(foldMode, this, this.$foldStyle);
        this.getFoldWidgetRange = foldMode.getFoldWidgetRange.bind(foldMode, this, this.$foldStyle);
        
        this.$updateFoldWidgets = this.updateFoldWidgets.bind(this);
        this.$tokenizerUpdateFoldWidgets = this.tokenizerUpdateFoldWidgets.bind(this);
        this.on('change', this.$updateFoldWidgets);
        this.on('tokenizerUpdate', this.$tokenizerUpdateFoldWidgets);
    };

    this.getParentFoldRangeData = function (row, ignoreCurrent) {
        var fw = this.foldWidgets;
        if (!fw || (ignoreCurrent && fw[row]))
            return {};

        var i = row - 1, firstRange;
        while (i >= 0) {
            var c = fw[i];
            if (c == null)
                c = fw[i] = this.getFoldWidget(i);

            if (c == "start") {
                var range = this.getFoldWidgetRange(i);
                if (!firstRange)
                    firstRange = range;
                if (range && range.end.row >= row)
                    break;
            }
            i--;
        }

        return {
            range: i !== -1 && range,
            firstRange: firstRange
        };
    };

    this.onFoldWidgetClick = function(row, e) {
        e = e.domEvent;
        var options = {
            children: e.shiftKey,
            all: e.ctrlKey || e.metaKey,
            siblings: e.altKey
        };
        
        var range = this.$toggleFoldWidget(row, options);
        if (!range) {
            var el = (e.target || e.srcElement);
            if (el && /ace_fold-widget/.test(el.className))
                el.className += " ace_invalid";
        }
    };
    
    this.$toggleFoldWidget = function(row, options) {
        if (!this.getFoldWidget)
            return;
        var type = this.getFoldWidget(row);
        var line = this.getLine(row);

        var dir = type === "end" ? -1 : 1;
        var fold = this.getFoldAt(row, dir === -1 ? 0 : line.length, dir);

        if (fold) {
            if (options.children || options.all)
                this.removeFold(fold);
            else
                this.expandFold(fold);
            return fold;
        }

        var range = this.getFoldWidgetRange(row, true);
        if (range && !range.isMultiLine()) {
            fold = this.getFoldAt(range.start.row, range.start.column, 1);
            if (fold && range.isEqual(fold.range)) {
                this.removeFold(fold);
                return fold;
            }
        }
        
        if (options.siblings) {
            var data = this.getParentFoldRangeData(row);
            if (data.range) {
                var startRow = data.range.start.row + 1;
                var endRow = data.range.end.row;
            }
            this.foldAll(startRow, endRow, options.all ? 10000 : 0);
        } else if (options.children) {
            endRow = range ? range.end.row : this.getLength();
            this.foldAll(row + 1, endRow, options.all ? 10000 : 0);
        } else if (range) {
            if (options.all) 
                range.collapseChildren = 10000;
            this.addFold("...", range);
        }
        
        return range;
    };
    
    
    
    this.toggleFoldWidget = function(toggleParent) {
        var row = this.selection.getCursor().row;
        row = this.getRowFoldStart(row);
        var range = this.$toggleFoldWidget(row, {});
        
        if (range)
            return;
        var data = this.getParentFoldRangeData(row, true);
        range = data.range || data.firstRange;
        
        if (range) {
            row = range.start.row;
            var fold = this.getFoldAt(row, this.getLine(row).length, 1);

            if (fold) {
                this.removeFold(fold);
            } else {
                this.addFold("...", range);
            }
        }
    };

    this.updateFoldWidgets = function(delta) {
        var firstRow = delta.start.row;
        var len = delta.end.row - firstRow;

        if (len === 0) {
            this.foldWidgets[firstRow] = null;
        } else if (delta.action == 'remove') {
            this.foldWidgets.splice(firstRow, len + 1, null);
        } else {
            var args = Array(len + 1);
            args.unshift(firstRow, 1);
            this.foldWidgets.splice.apply(this.foldWidgets, args);
        }
    };
    this.tokenizerUpdateFoldWidgets = function(e) {
        var rows = e.data;
        if (rows.first != rows.last) {
            if (this.foldWidgets.length > rows.first)
                this.foldWidgets.splice(rows.first, this.foldWidgets.length);
        }
    };
}

exports.Folding = Folding;

});

ace.define("ace/edit_session/bracket_match",["require","exports","module","ace/token_iterator","ace/range"], function(acequire, exports, module) {
"use strict";

var TokenIterator = acequire("../token_iterator").TokenIterator;
var Range = acequire("../range").Range;


function BracketMatch() {

    this.findMatchingBracket = function(position, chr) {
        if (position.column == 0) return null;

        var charBeforeCursor = chr || this.getLine(position.row).charAt(position.column-1);
        if (charBeforeCursor == "") return null;

        var match = charBeforeCursor.match(/([\(\[\{])|([\)\]\}])/);
        if (!match)
            return null;

        if (match[1])
            return this.$findClosingBracket(match[1], position);
        else
            return this.$findOpeningBracket(match[2], position);
    };
    
    this.getBracketRange = function(pos) {
        var line = this.getLine(pos.row);
        var before = true, range;

        var chr = line.charAt(pos.column-1);
        var match = chr && chr.match(/([\(\[\{])|([\)\]\}])/);
        if (!match) {
            chr = line.charAt(pos.column);
            pos = {row: pos.row, column: pos.column + 1};
            match = chr && chr.match(/([\(\[\{])|([\)\]\}])/);
            before = false;
        }
        if (!match)
            return null;

        if (match[1]) {
            var bracketPos = this.$findClosingBracket(match[1], pos);
            if (!bracketPos)
                return null;
            range = Range.fromPoints(pos, bracketPos);
            if (!before) {
                range.end.column++;
                range.start.column--;
            }
            range.cursor = range.end;
        } else {
            var bracketPos = this.$findOpeningBracket(match[2], pos);
            if (!bracketPos)
                return null;
            range = Range.fromPoints(bracketPos, pos);
            if (!before) {
                range.start.column++;
                range.end.column--;
            }
            range.cursor = range.start;
        }
        
        return range;
    };

    this.$brackets = {
        ")": "(",
        "(": ")",
        "]": "[",
        "[": "]",
        "{": "}",
        "}": "{"
    };

    this.$findOpeningBracket = function(bracket, position, typeRe) {
        var openBracket = this.$brackets[bracket];
        var depth = 1;

        var iterator = new TokenIterator(this, position.row, position.column);
        var token = iterator.getCurrentToken();
        if (!token)
            token = iterator.stepForward();
        if (!token)
            return;
        
         if (!typeRe){
            typeRe = new RegExp(
                "(\\.?" +
                token.type.replace(".", "\\.").replace("rparen", ".paren")
                    .replace(/\b(?:end)\b/, "(?:start|begin|end)")
                + ")+"
            );
        }
        var valueIndex = position.column - iterator.getCurrentTokenColumn() - 2;
        var value = token.value;
        
        while (true) {
        
            while (valueIndex >= 0) {
                var chr = value.charAt(valueIndex);
                if (chr == openBracket) {
                    depth -= 1;
                    if (depth == 0) {
                        return {row: iterator.getCurrentTokenRow(),
                            column: valueIndex + iterator.getCurrentTokenColumn()};
                    }
                }
                else if (chr == bracket) {
                    depth += 1;
                }
                valueIndex -= 1;
            }
            do {
                token = iterator.stepBackward();
            } while (token && !typeRe.test(token.type));

            if (token == null)
                break;
                
            value = token.value;
            valueIndex = value.length - 1;
        }
        
        return null;
    };

    this.$findClosingBracket = function(bracket, position, typeRe) {
        var closingBracket = this.$brackets[bracket];
        var depth = 1;

        var iterator = new TokenIterator(this, position.row, position.column);
        var token = iterator.getCurrentToken();
        if (!token)
            token = iterator.stepForward();
        if (!token)
            return;

        if (!typeRe){
            typeRe = new RegExp(
                "(\\.?" +
                token.type.replace(".", "\\.").replace("lparen", ".paren")
                    .replace(/\b(?:start|begin)\b/, "(?:start|begin|end)")
                + ")+"
            );
        }
        var valueIndex = position.column - iterator.getCurrentTokenColumn();

        while (true) {

            var value = token.value;
            var valueLength = value.length;
            while (valueIndex < valueLength) {
                var chr = value.charAt(valueIndex);
                if (chr == closingBracket) {
                    depth -= 1;
                    if (depth == 0) {
                        return {row: iterator.getCurrentTokenRow(),
                            column: valueIndex + iterator.getCurrentTokenColumn()};
                    }
                }
                else if (chr == bracket) {
                    depth += 1;
                }
                valueIndex += 1;
            }
            do {
                token = iterator.stepForward();
            } while (token && !typeRe.test(token.type));

            if (token == null)
                break;

            valueIndex = 0;
        }
        
        return null;
    };
}
exports.BracketMatch = BracketMatch;

});

ace.define("ace/edit_session",["require","exports","module","ace/lib/oop","ace/lib/lang","ace/bidihandler","ace/config","ace/lib/event_emitter","ace/selection","ace/mode/text","ace/range","ace/document","ace/background_tokenizer","ace/search_highlight","ace/edit_session/folding","ace/edit_session/bracket_match"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var lang = acequire("./lib/lang");
var BidiHandler = acequire("./bidihandler").BidiHandler;
var config = acequire("./config");
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var Selection = acequire("./selection").Selection;
var TextMode = acequire("./mode/text").Mode;
var Range = acequire("./range").Range;
var Document = acequire("./document").Document;
var BackgroundTokenizer = acequire("./background_tokenizer").BackgroundTokenizer;
var SearchHighlight = acequire("./search_highlight").SearchHighlight;

var EditSession = function(text, mode) {
    this.$breakpoints = [];
    this.$decorations = [];
    this.$frontMarkers = {};
    this.$backMarkers = {};
    this.$markerId = 1;
    this.$undoSelect = true;

    this.$foldData = [];
    this.id = "session" + (++EditSession.$uid);
    this.$foldData.toString = function() {
        return this.join("\n");
    };
    this.on("changeFold", this.onChangeFold.bind(this));
    this.$onChange = this.onChange.bind(this);

    if (typeof text != "object" || !text.getLine)
        text = new Document(text);

    this.$bidiHandler = new BidiHandler(this);
    this.setDocument(text);
    this.selection = new Selection(this);

    config.resetOptions(this);
    this.setMode(mode);
    config._signal("session", this);
};


EditSession.$uid = 0;

(function() {

    oop.implement(this, EventEmitter);
    this.setDocument = function(doc) {
        if (this.doc)
            this.doc.removeListener("change", this.$onChange);

        this.doc = doc;
        doc.on("change", this.$onChange);

        if (this.bgTokenizer)
            this.bgTokenizer.setDocument(this.getDocument());

        this.resetCaches();
    };
    this.getDocument = function() {
        return this.doc;
    };
    this.$resetRowCache = function(docRow) {
        if (!docRow) {
            this.$docRowCache = [];
            this.$screenRowCache = [];
            return;
        }
        var l = this.$docRowCache.length;
        var i = this.$getRowCacheIndex(this.$docRowCache, docRow) + 1;
        if (l > i) {
            this.$docRowCache.splice(i, l);
            this.$screenRowCache.splice(i, l);
        }
    };

    this.$getRowCacheIndex = function(cacheArray, val) {
        var low = 0;
        var hi = cacheArray.length - 1;

        while (low <= hi) {
            var mid = (low + hi) >> 1;
            var c = cacheArray[mid];

            if (val > c)
                low = mid + 1;
            else if (val < c)
                hi = mid - 1;
            else
                return mid;
        }

        return low -1;
    };

    this.resetCaches = function() {
        this.$modified = true;
        this.$wrapData = [];
        this.$rowLengthCache = [];
        this.$resetRowCache(0);
        if (this.bgTokenizer)
            this.bgTokenizer.start(0);
    };

    this.onChangeFold = function(e) {
        var fold = e.data;
        this.$resetRowCache(fold.start.row);
    };

    this.onChange = function(delta) {
        this.$modified = true;
        this.$bidiHandler.onChange(delta);
        this.$resetRowCache(delta.start.row);

        var removedFolds = this.$updateInternalDataOnChange(delta);
        if (!this.$fromUndo && this.$undoManager && !delta.ignore) {
            this.$deltasDoc.push(delta);
            if (removedFolds && removedFolds.length != 0) {
                this.$deltasFold.push({
                    action: "removeFolds",
                    folds:  removedFolds
                });
            }

            this.$informUndoManager.schedule();
        }

        this.bgTokenizer && this.bgTokenizer.$updateOnChange(delta);
        this._signal("change", delta);
    };
    this.setValue = function(text) {
        this.doc.setValue(text);
        this.selection.moveTo(0, 0);

        this.$resetRowCache(0);
        this.$deltas = [];
        this.$deltasDoc = [];
        this.$deltasFold = [];
        this.setUndoManager(this.$undoManager);
        this.getUndoManager().reset();
    };
    this.getValue =
    this.toString = function() {
        return this.doc.getValue();
    };
    this.getSelection = function() {
        return this.selection;
    };
    this.getState = function(row) {
        return this.bgTokenizer.getState(row);
    };
    this.getTokens = function(row) {
        return this.bgTokenizer.getTokens(row);
    };
    this.getTokenAt = function(row, column) {
        var tokens = this.bgTokenizer.getTokens(row);
        var token, c = 0;
        if (column == null) {
            var i = tokens.length - 1;
            c = this.getLine(row).length;
        } else {
            for (var i = 0; i < tokens.length; i++) {
                c += tokens[i].value.length;
                if (c >= column)
                    break;
            }
        }
        token = tokens[i];
        if (!token)
            return null;
        token.index = i;
        token.start = c - token.value.length;
        return token;
    };
    this.setUndoManager = function(undoManager) {
        this.$undoManager = undoManager;
        this.$deltas = [];
        this.$deltasDoc = [];
        this.$deltasFold = [];

        if (this.$informUndoManager)
            this.$informUndoManager.cancel();

        if (undoManager) {
            var self = this;

            this.$syncInformUndoManager = function() {
                self.$informUndoManager.cancel();

                if (self.$deltasFold.length) {
                    self.$deltas.push({
                        group: "fold",
                        deltas: self.$deltasFold
                    });
                    self.$deltasFold = [];
                }

                if (self.$deltasDoc.length) {
                    self.$deltas.push({
                        group: "doc",
                        deltas: self.$deltasDoc
                    });
                    self.$deltasDoc = [];
                }

                if (self.$deltas.length > 0) {
                    undoManager.execute({
                        action: "aceupdate",
                        args: [self.$deltas, self],
                        merge: self.mergeUndoDeltas
                    });
                }
                self.mergeUndoDeltas = false;
                self.$deltas = [];
            };
            this.$informUndoManager = lang.delayedCall(this.$syncInformUndoManager);
        }
    };
    this.markUndoGroup = function() {
        if (this.$syncInformUndoManager)
            this.$syncInformUndoManager();
    };
    
    this.$defaultUndoManager = {
        undo: function() {},
        redo: function() {},
        reset: function() {}
    };
    this.getUndoManager = function() {
        return this.$undoManager || this.$defaultUndoManager;
    };
    this.getTabString = function() {
        if (this.getUseSoftTabs()) {
            return lang.stringRepeat(" ", this.getTabSize());
        } else {
            return "\t";
        }
    };
    this.setUseSoftTabs = function(val) {
        this.setOption("useSoftTabs", val);
    };
    this.getUseSoftTabs = function() {
        return this.$useSoftTabs && !this.$mode.$indentWithTabs;
    };
    this.setTabSize = function(tabSize) {
        this.setOption("tabSize", tabSize);
    };
    this.getTabSize = function() {
        return this.$tabSize;
    };
    this.isTabStop = function(position) {
        return this.$useSoftTabs && (position.column % this.$tabSize === 0);
    };
    this.setNavigateWithinSoftTabs = function (navigateWithinSoftTabs) {
        this.setOption("navigateWithinSoftTabs", navigateWithinSoftTabs);
    };
    this.getNavigateWithinSoftTabs = function() {
        return this.$navigateWithinSoftTabs;
    };

    this.$overwrite = false;
    this.setOverwrite = function(overwrite) {
        this.setOption("overwrite", overwrite);
    };
    this.getOverwrite = function() {
        return this.$overwrite;
    };
    this.toggleOverwrite = function() {
        this.setOverwrite(!this.$overwrite);
    };
    this.addGutterDecoration = function(row, className) {
        if (!this.$decorations[row])
            this.$decorations[row] = "";
        this.$decorations[row] += " " + className;
        this._signal("changeBreakpoint", {});
    };
    this.removeGutterDecoration = function(row, className) {
        this.$decorations[row] = (this.$decorations[row] || "").replace(" " + className, "");
        this._signal("changeBreakpoint", {});
    };
    this.getBreakpoints = function() {
        return this.$breakpoints;
    };
    this.setBreakpoints = function(rows) {
        this.$breakpoints = [];
        for (var i=0; i<rows.length; i++) {
            this.$breakpoints[rows[i]] = "ace_breakpoint";
        }
        this._signal("changeBreakpoint", {});
    };
    this.clearBreakpoints = function() {
        this.$breakpoints = [];
        this._signal("changeBreakpoint", {});
    };
    this.setBreakpoint = function(row, className) {
        if (className === undefined)
            className = "ace_breakpoint";
        if (className)
            this.$breakpoints[row] = className;
        else
            delete this.$breakpoints[row];
        this._signal("changeBreakpoint", {});
    };
    this.clearBreakpoint = function(row) {
        delete this.$breakpoints[row];
        this._signal("changeBreakpoint", {});
    };
    this.addMarker = function(range, clazz, type, inFront) {
        var id = this.$markerId++;

        var marker = {
            range : range,
            type : type || "line",
            renderer: typeof type == "function" ? type : null,
            clazz : clazz,
            inFront: !!inFront,
            id: id
        };

        if (inFront) {
            this.$frontMarkers[id] = marker;
            this._signal("changeFrontMarker");
        } else {
            this.$backMarkers[id] = marker;
            this._signal("changeBackMarker");
        }

        return id;
    };
    this.addDynamicMarker = function(marker, inFront) {
        if (!marker.update)
            return;
        var id = this.$markerId++;
        marker.id = id;
        marker.inFront = !!inFront;

        if (inFront) {
            this.$frontMarkers[id] = marker;
            this._signal("changeFrontMarker");
        } else {
            this.$backMarkers[id] = marker;
            this._signal("changeBackMarker");
        }

        return marker;
    };
    this.removeMarker = function(markerId) {
        var marker = this.$frontMarkers[markerId] || this.$backMarkers[markerId];
        if (!marker)
            return;

        var markers = marker.inFront ? this.$frontMarkers : this.$backMarkers;
        if (marker) {
            delete (markers[markerId]);
            this._signal(marker.inFront ? "changeFrontMarker" : "changeBackMarker");
        }
    };
    this.getMarkers = function(inFront) {
        return inFront ? this.$frontMarkers : this.$backMarkers;
    };

    this.highlight = function(re) {
        if (!this.$searchHighlight) {
            var highlight = new SearchHighlight(null, "ace_selected-word", "text");
            this.$searchHighlight = this.addDynamicMarker(highlight);
        }
        this.$searchHighlight.setRegexp(re);
    };
    this.highlightLines = function(startRow, endRow, clazz, inFront) {
        if (typeof endRow != "number") {
            clazz = endRow;
            endRow = startRow;
        }
        if (!clazz)
            clazz = "ace_step";

        var range = new Range(startRow, 0, endRow, Infinity);
        range.id = this.addMarker(range, clazz, "fullLine", inFront);
        return range;
    };
    this.setAnnotations = function(annotations) {
        this.$annotations = annotations;
        this._signal("changeAnnotation", {});
    };
    this.getAnnotations = function() {
        return this.$annotations || [];
    };
    this.clearAnnotations = function() {
        this.setAnnotations([]);
    };
    this.$detectNewLine = function(text) {
        var match = text.match(/^.*?(\r?\n)/m);
        if (match) {
            this.$autoNewLine = match[1];
        } else {
            this.$autoNewLine = "\n";
        }
    };
    this.getWordRange = function(row, column) {
        var line = this.getLine(row);

        var inToken = false;
        if (column > 0)
            inToken = !!line.charAt(column - 1).match(this.tokenRe);

        if (!inToken)
            inToken = !!line.charAt(column).match(this.tokenRe);

        if (inToken)
            var re = this.tokenRe;
        else if (/^\s+$/.test(line.slice(column-1, column+1)))
            var re = /\s/;
        else
            var re = this.nonTokenRe;

        var start = column;
        if (start > 0) {
            do {
                start--;
            }
            while (start >= 0 && line.charAt(start).match(re));
            start++;
        }

        var end = column;
        while (end < line.length && line.charAt(end).match(re)) {
            end++;
        }

        return new Range(row, start, row, end);
    };
    this.getAWordRange = function(row, column) {
        var wordRange = this.getWordRange(row, column);
        var line = this.getLine(wordRange.end.row);

        while (line.charAt(wordRange.end.column).match(/[ \t]/)) {
            wordRange.end.column += 1;
        }
        return wordRange;
    };
    this.setNewLineMode = function(newLineMode) {
        this.doc.setNewLineMode(newLineMode);
    };
    this.getNewLineMode = function() {
        return this.doc.getNewLineMode();
    };
    this.setUseWorker = function(useWorker) { this.setOption("useWorker", useWorker); };
    this.getUseWorker = function() { return this.$useWorker; };
    this.onReloadTokenizer = function(e) {
        var rows = e.data;
        this.bgTokenizer.start(rows.first);
        this._signal("tokenizerUpdate", e);
    };

    this.$modes = {};
    this.$mode = null;
    this.$modeId = null;
    this.setMode = function(mode, cb) {
        if (mode && typeof mode === "object") {
            if (mode.getTokenizer)
                return this.$onChangeMode(mode);
            var options = mode;
            var path = options.path;
        } else {
            path = mode || "ace/mode/text";
        }
        if (!this.$modes["ace/mode/text"])
            this.$modes["ace/mode/text"] = new TextMode();

        if (this.$modes[path] && !options) {
            this.$onChangeMode(this.$modes[path]);
            cb && cb();
            return;
        }
        this.$modeId = path;
        config.loadModule(["mode", path], function(m) {
            if (this.$modeId !== path)
                return cb && cb();
            if (this.$modes[path] && !options) {
                this.$onChangeMode(this.$modes[path]);
            } else if (m && m.Mode) {
                m = new m.Mode(options);
                if (!options) {
                    this.$modes[path] = m;
                    m.$id = path;
                }
                this.$onChangeMode(m);
            }
            cb && cb();
        }.bind(this));
        if (!this.$mode)
            this.$onChangeMode(this.$modes["ace/mode/text"], true);
    };

    this.$onChangeMode = function(mode, $isPlaceholder) {
        if (!$isPlaceholder)
            this.$modeId = mode.$id;
        if (this.$mode === mode) 
            return;

        this.$mode = mode;

        this.$stopWorker();

        if (this.$useWorker)
            this.$startWorker();

        var tokenizer = mode.getTokenizer();

        if(tokenizer.addEventListener !== undefined) {
            var onReloadTokenizer = this.onReloadTokenizer.bind(this);
            tokenizer.addEventListener("update", onReloadTokenizer);
        }

        if (!this.bgTokenizer) {
            this.bgTokenizer = new BackgroundTokenizer(tokenizer);
            var _self = this;
            this.bgTokenizer.addEventListener("update", function(e) {
                _self._signal("tokenizerUpdate", e);
            });
        } else {
            this.bgTokenizer.setTokenizer(tokenizer);
        }

        this.bgTokenizer.setDocument(this.getDocument());

        this.tokenRe = mode.tokenRe;
        this.nonTokenRe = mode.nonTokenRe;

        
        if (!$isPlaceholder) {
            if (mode.attachToSession)
                mode.attachToSession(this);
            this.$options.wrapMethod.set.call(this, this.$wrapMethod);
            this.$setFolding(mode.foldingRules);
            this.bgTokenizer.start(0);
            this._emit("changeMode");
        }
    };

    this.$stopWorker = function() {
        if (this.$worker) {
            this.$worker.terminate();
            this.$worker = null;
        }
    };

    this.$startWorker = function() {
        try {
            this.$worker = this.$mode.createWorker(this);
        } catch (e) {
            config.warn("Could not load worker", e);
            this.$worker = null;
        }
    };
    this.getMode = function() {
        return this.$mode;
    };

    this.$scrollTop = 0;
    this.setScrollTop = function(scrollTop) {
        if (this.$scrollTop === scrollTop || isNaN(scrollTop))
            return;

        this.$scrollTop = scrollTop;
        this._signal("changeScrollTop", scrollTop);
    };
    this.getScrollTop = function() {
        return this.$scrollTop;
    };

    this.$scrollLeft = 0;
    this.setScrollLeft = function(scrollLeft) {
        if (this.$scrollLeft === scrollLeft || isNaN(scrollLeft))
            return;

        this.$scrollLeft = scrollLeft;
        this._signal("changeScrollLeft", scrollLeft);
    };
    this.getScrollLeft = function() {
        return this.$scrollLeft;
    };
    this.getScreenWidth = function() {
        this.$computeWidth();
        if (this.lineWidgets) 
            return Math.max(this.getLineWidgetMaxWidth(), this.screenWidth);
        return this.screenWidth;
    };
    
    this.getLineWidgetMaxWidth = function() {
        if (this.lineWidgetsWidth != null) return this.lineWidgetsWidth;
        var width = 0;
        this.lineWidgets.forEach(function(w) {
            if (w && w.screenWidth > width)
                width = w.screenWidth;
        });
        return this.lineWidgetWidth = width;
    };

    this.$computeWidth = function(force) {
        if (this.$modified || force) {
            this.$modified = false;

            if (this.$useWrapMode)
                return this.screenWidth = this.$wrapLimit;

            var lines = this.doc.getAllLines();
            var cache = this.$rowLengthCache;
            var longestScreenLine = 0;
            var foldIndex = 0;
            var foldLine = this.$foldData[foldIndex];
            var foldStart = foldLine ? foldLine.start.row : Infinity;
            var len = lines.length;

            for (var i = 0; i < len; i++) {
                if (i > foldStart) {
                    i = foldLine.end.row + 1;
                    if (i >= len)
                        break;
                    foldLine = this.$foldData[foldIndex++];
                    foldStart = foldLine ? foldLine.start.row : Infinity;
                }

                if (cache[i] == null)
                    cache[i] = this.$getStringScreenWidth(lines[i])[0];

                if (cache[i] > longestScreenLine)
                    longestScreenLine = cache[i];
            }
            this.screenWidth = longestScreenLine;
        }
    };
    this.getLine = function(row) {
        return this.doc.getLine(row);
    };
    this.getLines = function(firstRow, lastRow) {
        return this.doc.getLines(firstRow, lastRow);
    };
    this.getLength = function() {
        return this.doc.getLength();
    };
    this.getTextRange = function(range) {
        return this.doc.getTextRange(range || this.selection.getRange());
    };
    this.insert = function(position, text) {
        return this.doc.insert(position, text);
    };
    this.remove = function(range) {
        return this.doc.remove(range);
    };
    this.removeFullLines = function(firstRow, lastRow){
        return this.doc.removeFullLines(firstRow, lastRow);
    };
    this.undoChanges = function(deltas, dontSelect) {
        if (!deltas.length)
            return;

        this.$fromUndo = true;
        var lastUndoRange = null;
        for (var i = deltas.length - 1; i != -1; i--) {
            var delta = deltas[i];
            if (delta.group == "doc") {
                this.doc.revertDeltas(delta.deltas);
                lastUndoRange =
                    this.$getUndoSelection(delta.deltas, true, lastUndoRange);
            } else {
                delta.deltas.forEach(function(foldDelta) {
                    this.addFolds(foldDelta.folds);
                }, this);
            }
        }
        this.$fromUndo = false;
        lastUndoRange &&
            this.$undoSelect &&
            !dontSelect &&
            this.selection.setSelectionRange(lastUndoRange);
        return lastUndoRange;
    };
    this.redoChanges = function(deltas, dontSelect) {
        if (!deltas.length)
            return;

        this.$fromUndo = true;
        var lastUndoRange = null;
        for (var i = 0; i < deltas.length; i++) {
            var delta = deltas[i];
            if (delta.group == "doc") {
                this.doc.applyDeltas(delta.deltas);
                lastUndoRange =
                    this.$getUndoSelection(delta.deltas, false, lastUndoRange);
            }
        }
        this.$fromUndo = false;
        lastUndoRange &&
            this.$undoSelect &&
            !dontSelect &&
            this.selection.setSelectionRange(lastUndoRange);
        return lastUndoRange;
    };
    this.setUndoSelect = function(enable) {
        this.$undoSelect = enable;
    };

    this.$getUndoSelection = function(deltas, isUndo, lastUndoRange) {
        function isInsert(delta) {
            return isUndo ? delta.action !== "insert" : delta.action === "insert";
        }

        var delta = deltas[0];
        var range, point;
        var lastDeltaIsInsert = false;
        if (isInsert(delta)) {
            range = Range.fromPoints(delta.start, delta.end);
            lastDeltaIsInsert = true;
        } else {
            range = Range.fromPoints(delta.start, delta.start);
            lastDeltaIsInsert = false;
        }

        for (var i = 1; i < deltas.length; i++) {
            delta = deltas[i];
            if (isInsert(delta)) {
                point = delta.start;
                if (range.compare(point.row, point.column) == -1) {
                    range.setStart(point);
                }
                point = delta.end;
                if (range.compare(point.row, point.column) == 1) {
                    range.setEnd(point);
                }
                lastDeltaIsInsert = true;
            } else {
                point = delta.start;
                if (range.compare(point.row, point.column) == -1) {
                    range = Range.fromPoints(delta.start, delta.start);
                }
                lastDeltaIsInsert = false;
            }
        }
        if (lastUndoRange != null) {
            if (Range.comparePoints(lastUndoRange.start, range.start) === 0) {
                lastUndoRange.start.column += range.end.column - range.start.column;
                lastUndoRange.end.column += range.end.column - range.start.column;
            }

            var cmp = lastUndoRange.compareRange(range);
            if (cmp == 1) {
                range.setStart(lastUndoRange.start);
            } else if (cmp == -1) {
                range.setEnd(lastUndoRange.end);
            }
        }

        return range;
    };
    this.replace = function(range, text) {
        return this.doc.replace(range, text);
    };
    this.moveText = function(fromRange, toPosition, copy) {
        var text = this.getTextRange(fromRange);
        var folds = this.getFoldsInRange(fromRange);

        var toRange = Range.fromPoints(toPosition, toPosition);
        if (!copy) {
            this.remove(fromRange);
            var rowDiff = fromRange.start.row - fromRange.end.row;
            var collDiff = rowDiff ? -fromRange.end.column : fromRange.start.column - fromRange.end.column;
            if (collDiff) {
                if (toRange.start.row == fromRange.end.row && toRange.start.column > fromRange.end.column)
                    toRange.start.column += collDiff;
                if (toRange.end.row == fromRange.end.row && toRange.end.column > fromRange.end.column)
                    toRange.end.column += collDiff;
            }
            if (rowDiff && toRange.start.row >= fromRange.end.row) {
                toRange.start.row += rowDiff;
                toRange.end.row += rowDiff;
            }
        }

        toRange.end = this.insert(toRange.start, text);
        if (folds.length) {
            var oldStart = fromRange.start;
            var newStart = toRange.start;
            var rowDiff = newStart.row - oldStart.row;
            var collDiff = newStart.column - oldStart.column;
            this.addFolds(folds.map(function(x) {
                x = x.clone();
                if (x.start.row == oldStart.row)
                    x.start.column += collDiff;
                if (x.end.row == oldStart.row)
                    x.end.column += collDiff;
                x.start.row += rowDiff;
                x.end.row += rowDiff;
                return x;
            }));
        }

        return toRange;
    };
    this.indentRows = function(startRow, endRow, indentString) {
        indentString = indentString.replace(/\t/g, this.getTabString());
        for (var row=startRow; row<=endRow; row++)
            this.doc.insertInLine({row: row, column: 0}, indentString);
    };
    this.outdentRows = function (range) {
        var rowRange = range.collapseRows();
        var deleteRange = new Range(0, 0, 0, 0);
        var size = this.getTabSize();

        for (var i = rowRange.start.row; i <= rowRange.end.row; ++i) {
            var line = this.getLine(i);

            deleteRange.start.row = i;
            deleteRange.end.row = i;
            for (var j = 0; j < size; ++j)
                if (line.charAt(j) != ' ')
                    break;
            if (j < size && line.charAt(j) == '\t') {
                deleteRange.start.column = j;
                deleteRange.end.column = j + 1;
            } else {
                deleteRange.start.column = 0;
                deleteRange.end.column = j;
            }
            this.remove(deleteRange);
        }
    };

    this.$moveLines = function(firstRow, lastRow, dir) {
        firstRow = this.getRowFoldStart(firstRow);
        lastRow = this.getRowFoldEnd(lastRow);
        if (dir < 0) {
            var row = this.getRowFoldStart(firstRow + dir);
            if (row < 0) return 0;
            var diff = row-firstRow;
        } else if (dir > 0) {
            var row = this.getRowFoldEnd(lastRow + dir);
            if (row > this.doc.getLength()-1) return 0;
            var diff = row-lastRow;
        } else {
            firstRow = this.$clipRowToDocument(firstRow);
            lastRow = this.$clipRowToDocument(lastRow);
            var diff = lastRow - firstRow + 1;
        }

        var range = new Range(firstRow, 0, lastRow, Number.MAX_VALUE);
        var folds = this.getFoldsInRange(range).map(function(x){
            x = x.clone();
            x.start.row += diff;
            x.end.row += diff;
            return x;
        });
        
        var lines = dir == 0
            ? this.doc.getLines(firstRow, lastRow)
            : this.doc.removeFullLines(firstRow, lastRow);
        this.doc.insertFullLines(firstRow+diff, lines);
        folds.length && this.addFolds(folds);
        return diff;
    };
    this.moveLinesUp = function(firstRow, lastRow) {
        return this.$moveLines(firstRow, lastRow, -1);
    };
    this.moveLinesDown = function(firstRow, lastRow) {
        return this.$moveLines(firstRow, lastRow, 1);
    };
    this.duplicateLines = function(firstRow, lastRow) {
        return this.$moveLines(firstRow, lastRow, 0);
    };


    this.$clipRowToDocument = function(row) {
        return Math.max(0, Math.min(row, this.doc.getLength()-1));
    };

    this.$clipColumnToRow = function(row, column) {
        if (column < 0)
            return 0;
        return Math.min(this.doc.getLine(row).length, column);
    };


    this.$clipPositionToDocument = function(row, column) {
        column = Math.max(0, column);

        if (row < 0) {
            row = 0;
            column = 0;
        } else {
            var len = this.doc.getLength();
            if (row >= len) {
                row = len - 1;
                column = this.doc.getLine(len-1).length;
            } else {
                column = Math.min(this.doc.getLine(row).length, column);
            }
        }

        return {
            row: row,
            column: column
        };
    };

    this.$clipRangeToDocument = function(range) {
        if (range.start.row < 0) {
            range.start.row = 0;
            range.start.column = 0;
        } else {
            range.start.column = this.$clipColumnToRow(
                range.start.row,
                range.start.column
            );
        }

        var len = this.doc.getLength() - 1;
        if (range.end.row > len) {
            range.end.row = len;
            range.end.column = this.doc.getLine(len).length;
        } else {
            range.end.column = this.$clipColumnToRow(
                range.end.row,
                range.end.column
            );
        }
        return range;
    };
    this.$wrapLimit = 80;
    this.$useWrapMode = false;
    this.$wrapLimitRange = {
        min : null,
        max : null
    };
    this.setUseWrapMode = function(useWrapMode) {
        if (useWrapMode != this.$useWrapMode) {
            this.$useWrapMode = useWrapMode;
            this.$modified = true;
            this.$resetRowCache(0);
            if (useWrapMode) {
                var len = this.getLength();
                this.$wrapData = Array(len);
                this.$updateWrapData(0, len - 1);
            }

            this._signal("changeWrapMode");
        }
    };
    this.getUseWrapMode = function() {
        return this.$useWrapMode;
    };
    this.setWrapLimitRange = function(min, max) {
        if (this.$wrapLimitRange.min !== min || this.$wrapLimitRange.max !== max) {
            this.$wrapLimitRange = { min: min, max: max };
            this.$modified = true;
            this.$bidiHandler.markAsDirty();
            if (this.$useWrapMode)
                this._signal("changeWrapMode");
        }
    };
    this.adjustWrapLimit = function(desiredLimit, $printMargin) {
        var limits = this.$wrapLimitRange;
        if (limits.max < 0)
            limits = {min: $printMargin, max: $printMargin};
        var wrapLimit = this.$constrainWrapLimit(desiredLimit, limits.min, limits.max);
        if (wrapLimit != this.$wrapLimit && wrapLimit > 1) {
            this.$wrapLimit = wrapLimit;
            this.$modified = true;
            if (this.$useWrapMode) {
                this.$updateWrapData(0, this.getLength() - 1);
                this.$resetRowCache(0);
                this._signal("changeWrapLimit");
            }
            return true;
        }
        return false;
    };

    this.$constrainWrapLimit = function(wrapLimit, min, max) {
        if (min)
            wrapLimit = Math.max(min, wrapLimit);

        if (max)
            wrapLimit = Math.min(max, wrapLimit);

        return wrapLimit;
    };
    this.getWrapLimit = function() {
        return this.$wrapLimit;
    };
    this.setWrapLimit = function (limit) {
        this.setWrapLimitRange(limit, limit);
    };
    this.getWrapLimitRange = function() {
        return {
            min : this.$wrapLimitRange.min,
            max : this.$wrapLimitRange.max
        };
    };

    this.$updateInternalDataOnChange = function(delta) {
        var useWrapMode = this.$useWrapMode;
        var action = delta.action;
        var start = delta.start;
        var end = delta.end;
        var firstRow = start.row;
        var lastRow = end.row;
        var len = lastRow - firstRow;
        var removedFolds = null;
        
        this.$updating = true;
        if (len != 0) {
            if (action === "remove") {
                this[useWrapMode ? "$wrapData" : "$rowLengthCache"].splice(firstRow, len);

                var foldLines = this.$foldData;
                removedFolds = this.getFoldsInRange(delta);
                this.removeFolds(removedFolds);

                var foldLine = this.getFoldLine(end.row);
                var idx = 0;
                if (foldLine) {
                    foldLine.addRemoveChars(end.row, end.column, start.column - end.column);
                    foldLine.shiftRow(-len);

                    var foldLineBefore = this.getFoldLine(firstRow);
                    if (foldLineBefore && foldLineBefore !== foldLine) {
                        foldLineBefore.merge(foldLine);
                        foldLine = foldLineBefore;
                    }
                    idx = foldLines.indexOf(foldLine) + 1;
                }

                for (idx; idx < foldLines.length; idx++) {
                    var foldLine = foldLines[idx];
                    if (foldLine.start.row >= end.row) {
                        foldLine.shiftRow(-len);
                    }
                }

                lastRow = firstRow;
            } else {
                var args = Array(len);
                args.unshift(firstRow, 0);
                var arr = useWrapMode ? this.$wrapData : this.$rowLengthCache;
                arr.splice.apply(arr, args);
                var foldLines = this.$foldData;
                var foldLine = this.getFoldLine(firstRow);
                var idx = 0;
                if (foldLine) {
                    var cmp = foldLine.range.compareInside(start.row, start.column);
                    if (cmp == 0) {
                        foldLine = foldLine.split(start.row, start.column);
                        if (foldLine) {
                            foldLine.shiftRow(len);
                            foldLine.addRemoveChars(lastRow, 0, end.column - start.column);
                        }
                    } else
                    if (cmp == -1) {
                        foldLine.addRemoveChars(firstRow, 0, end.column - start.column);
                        foldLine.shiftRow(len);
                    }
                    idx = foldLines.indexOf(foldLine) + 1;
                }

                for (idx; idx < foldLines.length; idx++) {
                    var foldLine = foldLines[idx];
                    if (foldLine.start.row >= firstRow) {
                        foldLine.shiftRow(len);
                    }
                }
            }
        } else {
            len = Math.abs(delta.start.column - delta.end.column);
            if (action === "remove") {
                removedFolds = this.getFoldsInRange(delta);
                this.removeFolds(removedFolds);

                len = -len;
            }
            var foldLine = this.getFoldLine(firstRow);
            if (foldLine) {
                foldLine.addRemoveChars(firstRow, start.column, len);
            }
        }

        if (useWrapMode && this.$wrapData.length != this.doc.getLength()) {
            console.error("doc.getLength() and $wrapData.length have to be the same!");
        }
        this.$updating = false;

        if (useWrapMode)
            this.$updateWrapData(firstRow, lastRow);
        else
            this.$updateRowLengthCache(firstRow, lastRow);

        return removedFolds;
    };

    this.$updateRowLengthCache = function(firstRow, lastRow, b) {
        this.$rowLengthCache[firstRow] = null;
        this.$rowLengthCache[lastRow] = null;
    };

    this.$updateWrapData = function(firstRow, lastRow) {
        var lines = this.doc.getAllLines();
        var tabSize = this.getTabSize();
        var wrapData = this.$wrapData;
        var wrapLimit = this.$wrapLimit;
        var tokens;
        var foldLine;

        var row = firstRow;
        lastRow = Math.min(lastRow, lines.length - 1);
        while (row <= lastRow) {
            foldLine = this.getFoldLine(row, foldLine);
            if (!foldLine) {
                tokens = this.$getDisplayTokens(lines[row]);
                wrapData[row] = this.$computeWrapSplits(tokens, wrapLimit, tabSize);
                row ++;
            } else {
                tokens = [];
                foldLine.walk(function(placeholder, row, column, lastColumn) {
                        var walkTokens;
                        if (placeholder != null) {
                            walkTokens = this.$getDisplayTokens(
                                            placeholder, tokens.length);
                            walkTokens[0] = PLACEHOLDER_START;
                            for (var i = 1; i < walkTokens.length; i++) {
                                walkTokens[i] = PLACEHOLDER_BODY;
                            }
                        } else {
                            walkTokens = this.$getDisplayTokens(
                                lines[row].substring(lastColumn, column),
                                tokens.length);
                        }
                        tokens = tokens.concat(walkTokens);
                    }.bind(this),
                    foldLine.end.row,
                    lines[foldLine.end.row].length + 1
                );

                wrapData[foldLine.start.row] = this.$computeWrapSplits(tokens, wrapLimit, tabSize);
                row = foldLine.end.row + 1;
            }
        }
    };
    var CHAR = 1,
        CHAR_EXT = 2,
        PLACEHOLDER_START = 3,
        PLACEHOLDER_BODY =  4,
        PUNCTUATION = 9,
        SPACE = 10,
        TAB = 11,
        TAB_SPACE = 12;


    this.$computeWrapSplits = function(tokens, wrapLimit, tabSize) {
        if (tokens.length == 0) {
            return [];
        }

        var splits = [];
        var displayLength = tokens.length;
        var lastSplit = 0, lastDocSplit = 0;

        var isCode = this.$wrapAsCode;

        var indentedSoftWrap = this.$indentedSoftWrap;
        var maxIndent = wrapLimit <= Math.max(2 * tabSize, 8)
            || indentedSoftWrap === false ? 0 : Math.floor(wrapLimit / 2);

        function getWrapIndent() {
            var indentation = 0;
            if (maxIndent === 0)
                return indentation;
            if (indentedSoftWrap) {
                for (var i = 0; i < tokens.length; i++) {
                    var token = tokens[i];
                    if (token == SPACE)
                        indentation += 1;
                    else if (token == TAB)
                        indentation += tabSize;
                    else if (token == TAB_SPACE)
                        continue;
                    else
                        break;
                }
            }
            if (isCode && indentedSoftWrap !== false)
                indentation += tabSize;
            return Math.min(indentation, maxIndent);
        }
        function addSplit(screenPos) {
            var displayed = tokens.slice(lastSplit, screenPos);
            var len = displayed.length;
            displayed.join("")
                .replace(/12/g, function() {
                    len -= 1;
                })
                .replace(/2/g, function() {
                    len -= 1;
                });

            if (!splits.length) {
                indent = getWrapIndent();
                splits.indent = indent;
            }
            lastDocSplit += len;
            splits.push(lastDocSplit);
            lastSplit = screenPos;
        }
        var indent = 0;
        while (displayLength - lastSplit > wrapLimit - indent) {
            var split = lastSplit + wrapLimit - indent;
            if (tokens[split - 1] >= SPACE && tokens[split] >= SPACE) {
                addSplit(split);
                continue;
            }
            if (tokens[split] == PLACEHOLDER_START || tokens[split] == PLACEHOLDER_BODY) {
                for (split; split != lastSplit - 1; split--) {
                    if (tokens[split] == PLACEHOLDER_START) {
                        break;
                    }
                }
                if (split > lastSplit) {
                    addSplit(split);
                    continue;
                }
                split = lastSplit + wrapLimit;
                for (split; split < tokens.length; split++) {
                    if (tokens[split] != PLACEHOLDER_BODY) {
                        break;
                    }
                }
                if (split == tokens.length) {
                    break;  // Breaks the while-loop.
                }
                addSplit(split);
                continue;
            }
            var minSplit = Math.max(split - (wrapLimit -(wrapLimit>>2)), lastSplit - 1);
            while (split > minSplit && tokens[split] < PLACEHOLDER_START) {
                split --;
            }
            if (isCode) {
                while (split > minSplit && tokens[split] < PLACEHOLDER_START) {
                    split --;
                }
                while (split > minSplit && tokens[split] == PUNCTUATION) {
                    split --;
                }
            } else {
                while (split > minSplit && tokens[split] < SPACE) {
                    split --;
                }
            }
            if (split > minSplit) {
                addSplit(++split);
                continue;
            }
            split = lastSplit + wrapLimit;
            if (tokens[split] == CHAR_EXT)
                split--;
            addSplit(split - indent);
        }
        return splits;
    };
    this.$getDisplayTokens = function(str, offset) {
        var arr = [];
        var tabSize;
        offset = offset || 0;

        for (var i = 0; i < str.length; i++) {
            var c = str.charCodeAt(i);
            if (c == 9) {
                tabSize = this.getScreenTabSize(arr.length + offset);
                arr.push(TAB);
                for (var n = 1; n < tabSize; n++) {
                    arr.push(TAB_SPACE);
                }
            }
            else if (c == 32) {
                arr.push(SPACE);
            } else if((c > 39 && c < 48) || (c > 57 && c < 64)) {
                arr.push(PUNCTUATION);
            }
            else if (c >= 0x1100 && isFullWidth(c)) {
                arr.push(CHAR, CHAR_EXT);
            } else {
                arr.push(CHAR);
            }
        }
        return arr;
    };
    this.$getStringScreenWidth = function(str, maxScreenColumn, screenColumn) {
        if (maxScreenColumn == 0)
            return [0, 0];
        if (maxScreenColumn == null)
            maxScreenColumn = Infinity;
        screenColumn = screenColumn || 0;

        var c, column;
        for (column = 0; column < str.length; column++) {
            c = str.charCodeAt(column);
            if (c == 9) {
                screenColumn += this.getScreenTabSize(screenColumn);
            }
            else if (c >= 0x1100 && isFullWidth(c)) {
                screenColumn += 2;
            } else {
                screenColumn += 1;
            }
            if (screenColumn > maxScreenColumn) {
                break;
            }
        }

        return [screenColumn, column];
    };

    this.lineWidgets = null;
    this.getRowLength = function(row) {
        if (this.lineWidgets)
            var h = this.lineWidgets[row] && this.lineWidgets[row].rowCount || 0;
        else 
            h = 0;
        if (!this.$useWrapMode || !this.$wrapData[row]) {
            return 1 + h;
        } else {
            return this.$wrapData[row].length + 1 + h;
        }
    };
    this.getRowLineCount = function(row) {
        if (!this.$useWrapMode || !this.$wrapData[row]) {
            return 1;
        } else {
            return this.$wrapData[row].length + 1;
        }
    };

    this.getRowWrapIndent = function(screenRow) {
        if (this.$useWrapMode) {
            var pos = this.screenToDocumentPosition(screenRow, Number.MAX_VALUE);
            var splits = this.$wrapData[pos.row];
            return splits.length && splits[0] < pos.column ? splits.indent : 0;
        } else {
            return 0;
        }
    };
    this.getScreenLastRowColumn = function(screenRow) {
        var pos = this.screenToDocumentPosition(screenRow, Number.MAX_VALUE);
        return this.documentToScreenColumn(pos.row, pos.column);
    };
    this.getDocumentLastRowColumn = function(docRow, docColumn) {
        var screenRow = this.documentToScreenRow(docRow, docColumn);
        return this.getScreenLastRowColumn(screenRow);
    };
    this.getDocumentLastRowColumnPosition = function(docRow, docColumn) {
        var screenRow = this.documentToScreenRow(docRow, docColumn);
        return this.screenToDocumentPosition(screenRow, Number.MAX_VALUE / 10);
    };
    this.getRowSplitData = function(row) {
        if (!this.$useWrapMode) {
            return undefined;
        } else {
            return this.$wrapData[row];
        }
    };
    this.getScreenTabSize = function(screenColumn) {
        return this.$tabSize - screenColumn % this.$tabSize;
    };


    this.screenToDocumentRow = function(screenRow, screenColumn) {
        return this.screenToDocumentPosition(screenRow, screenColumn).row;
    };


    this.screenToDocumentColumn = function(screenRow, screenColumn) {
        return this.screenToDocumentPosition(screenRow, screenColumn).column;
    };
    this.screenToDocumentPosition = function(screenRow, screenColumn, offsetX) {
        if (screenRow < 0)
            return {row: 0, column: 0};

        var line;
        var docRow = 0;
        var docColumn = 0;
        var column;
        var row = 0;
        var rowLength = 0;

        var rowCache = this.$screenRowCache;
        var i = this.$getRowCacheIndex(rowCache, screenRow);
        var l = rowCache.length;
        if (l && i >= 0) {
            var row = rowCache[i];
            var docRow = this.$docRowCache[i];
            var doCache = screenRow > rowCache[l - 1];
        } else {
            var doCache = !l;
        }

        var maxRow = this.getLength() - 1;
        var foldLine = this.getNextFoldLine(docRow);
        var foldStart = foldLine ? foldLine.start.row : Infinity;

        while (row <= screenRow) {
            rowLength = this.getRowLength(docRow);
            if (row + rowLength > screenRow || docRow >= maxRow) {
                break;
            } else {
                row += rowLength;
                docRow++;
                if (docRow > foldStart) {
                    docRow = foldLine.end.row+1;
                    foldLine = this.getNextFoldLine(docRow, foldLine);
                    foldStart = foldLine ? foldLine.start.row : Infinity;
                }
            }

            if (doCache) {
                this.$docRowCache.push(docRow);
                this.$screenRowCache.push(row);
            }
        }

        if (foldLine && foldLine.start.row <= docRow) {
            line = this.getFoldDisplayLine(foldLine);
            docRow = foldLine.start.row;
        } else if (row + rowLength <= screenRow || docRow > maxRow) {
            return {
                row: maxRow,
                column: this.getLine(maxRow).length
            };
        } else {
            line = this.getLine(docRow);
            foldLine = null;
        }
        var wrapIndent = 0, splitIndex = Math.floor(screenRow - row);
        if (this.$useWrapMode) {
            var splits = this.$wrapData[docRow];
            if (splits) {
                column = splits[splitIndex];
                if(splitIndex > 0 && splits.length) {
                    wrapIndent = splits.indent;
                    docColumn = splits[splitIndex - 1] || splits[splits.length - 1];
                    line = line.substring(docColumn);
                }
            }
        }

        if (offsetX !== undefined && this.$bidiHandler.isBidiRow(row + splitIndex, docRow, splitIndex))
            screenColumn = this.$bidiHandler.offsetToCol(offsetX);

        docColumn += this.$getStringScreenWidth(line, screenColumn - wrapIndent)[1];
        if (this.$useWrapMode && docColumn >= column)
            docColumn = column - 1;

        if (foldLine)
            return foldLine.idxToPosition(docColumn);

        return {row: docRow, column: docColumn};
    };
    this.documentToScreenPosition = function(docRow, docColumn) {
        if (typeof docColumn === "undefined")
            var pos = this.$clipPositionToDocument(docRow.row, docRow.column);
        else
            pos = this.$clipPositionToDocument(docRow, docColumn);

        docRow = pos.row;
        docColumn = pos.column;

        var screenRow = 0;
        var foldStartRow = null;
        var fold = null;
        fold = this.getFoldAt(docRow, docColumn, 1);
        if (fold) {
            docRow = fold.start.row;
            docColumn = fold.start.column;
        }

        var rowEnd, row = 0;


        var rowCache = this.$docRowCache;
        var i = this.$getRowCacheIndex(rowCache, docRow);
        var l = rowCache.length;
        if (l && i >= 0) {
            var row = rowCache[i];
            var screenRow = this.$screenRowCache[i];
            var doCache = docRow > rowCache[l - 1];
        } else {
            var doCache = !l;
        }

        var foldLine = this.getNextFoldLine(row);
        var foldStart = foldLine ?foldLine.start.row :Infinity;

        while (row < docRow) {
            if (row >= foldStart) {
                rowEnd = foldLine.end.row + 1;
                if (rowEnd > docRow)
                    break;
                foldLine = this.getNextFoldLine(rowEnd, foldLine);
                foldStart = foldLine ?foldLine.start.row :Infinity;
            }
            else {
                rowEnd = row + 1;
            }

            screenRow += this.getRowLength(row);
            row = rowEnd;

            if (doCache) {
                this.$docRowCache.push(row);
                this.$screenRowCache.push(screenRow);
            }
        }
        var textLine = "";
        if (foldLine && row >= foldStart) {
            textLine = this.getFoldDisplayLine(foldLine, docRow, docColumn);
            foldStartRow = foldLine.start.row;
        } else {
            textLine = this.getLine(docRow).substring(0, docColumn);
            foldStartRow = docRow;
        }
        var wrapIndent = 0;
        if (this.$useWrapMode) {
            var wrapRow = this.$wrapData[foldStartRow];
            if (wrapRow) {
                var screenRowOffset = 0;
                while (textLine.length >= wrapRow[screenRowOffset]) {
                    screenRow ++;
                    screenRowOffset++;
                }
                textLine = textLine.substring(
                    wrapRow[screenRowOffset - 1] || 0, textLine.length
                );
                wrapIndent = screenRowOffset > 0 ? wrapRow.indent : 0;
            }
        }

        return {
            row: screenRow,
            column: wrapIndent + this.$getStringScreenWidth(textLine)[0]
        };
    };
    this.documentToScreenColumn = function(row, docColumn) {
        return this.documentToScreenPosition(row, docColumn).column;
    };
    this.documentToScreenRow = function(docRow, docColumn) {
        return this.documentToScreenPosition(docRow, docColumn).row;
    };
    this.getScreenLength = function() {
        var screenRows = 0;
        var fold = null;
        if (!this.$useWrapMode) {
            screenRows = this.getLength();
            var foldData = this.$foldData;
            for (var i = 0; i < foldData.length; i++) {
                fold = foldData[i];
                screenRows -= fold.end.row - fold.start.row;
            }
        } else {
            var lastRow = this.$wrapData.length;
            var row = 0, i = 0;
            var fold = this.$foldData[i++];
            var foldStart = fold ? fold.start.row :Infinity;

            while (row < lastRow) {
                var splits = this.$wrapData[row];
                screenRows += splits ? splits.length + 1 : 1;
                row ++;
                if (row > foldStart) {
                    row = fold.end.row+1;
                    fold = this.$foldData[i++];
                    foldStart = fold ?fold.start.row :Infinity;
                }
            }
        }
        if (this.lineWidgets)
            screenRows += this.$getWidgetScreenLength();

        return screenRows;
    };
    this.$setFontMetrics = function(fm) {
        if (!this.$enableVarChar) return;
        this.$getStringScreenWidth = function(str, maxScreenColumn, screenColumn) {
            if (maxScreenColumn === 0)
                return [0, 0];
            if (!maxScreenColumn)
                maxScreenColumn = Infinity;
            screenColumn = screenColumn || 0;
            
            var c, column;
            for (column = 0; column < str.length; column++) {
                c = str.charAt(column);
                if (c === "\t") {
                    screenColumn += this.getScreenTabSize(screenColumn);
                } else {
                    screenColumn += fm.getCharacterWidth(c);
                }
                if (screenColumn > maxScreenColumn) {
                    break;
                }
            }
            
            return [screenColumn, column];
        };
    };
    
    this.destroy = function() {
        if (this.bgTokenizer) {
            this.bgTokenizer.setDocument(null);
            this.bgTokenizer = null;
        }
        this.$stopWorker();
    };

    this.isFullWidth = isFullWidth;
    function isFullWidth(c) {
        if (c < 0x1100)
            return false;
        return c >= 0x1100 && c <= 0x115F ||
               c >= 0x11A3 && c <= 0x11A7 ||
               c >= 0x11FA && c <= 0x11FF ||
               c >= 0x2329 && c <= 0x232A ||
               c >= 0x2E80 && c <= 0x2E99 ||
               c >= 0x2E9B && c <= 0x2EF3 ||
               c >= 0x2F00 && c <= 0x2FD5 ||
               c >= 0x2FF0 && c <= 0x2FFB ||
               c >= 0x3000 && c <= 0x303E ||
               c >= 0x3041 && c <= 0x3096 ||
               c >= 0x3099 && c <= 0x30FF ||
               c >= 0x3105 && c <= 0x312D ||
               c >= 0x3131 && c <= 0x318E ||
               c >= 0x3190 && c <= 0x31BA ||
               c >= 0x31C0 && c <= 0x31E3 ||
               c >= 0x31F0 && c <= 0x321E ||
               c >= 0x3220 && c <= 0x3247 ||
               c >= 0x3250 && c <= 0x32FE ||
               c >= 0x3300 && c <= 0x4DBF ||
               c >= 0x4E00 && c <= 0xA48C ||
               c >= 0xA490 && c <= 0xA4C6 ||
               c >= 0xA960 && c <= 0xA97C ||
               c >= 0xAC00 && c <= 0xD7A3 ||
               c >= 0xD7B0 && c <= 0xD7C6 ||
               c >= 0xD7CB && c <= 0xD7FB ||
               c >= 0xF900 && c <= 0xFAFF ||
               c >= 0xFE10 && c <= 0xFE19 ||
               c >= 0xFE30 && c <= 0xFE52 ||
               c >= 0xFE54 && c <= 0xFE66 ||
               c >= 0xFE68 && c <= 0xFE6B ||
               c >= 0xFF01 && c <= 0xFF60 ||
               c >= 0xFFE0 && c <= 0xFFE6;
    }

}).call(EditSession.prototype);

acequire("./edit_session/folding").Folding.call(EditSession.prototype);
acequire("./edit_session/bracket_match").BracketMatch.call(EditSession.prototype);


config.defineOptions(EditSession.prototype, "session", {
    wrap: {
        set: function(value) {
            if (!value || value == "off")
                value = false;
            else if (value == "free")
                value = true;
            else if (value == "printMargin")
                value = -1;
            else if (typeof value == "string")
                value = parseInt(value, 10) || false;

            if (this.$wrap == value)
                return;
            this.$wrap = value;
            if (!value) {
                this.setUseWrapMode(false);
            } else {
                var col = typeof value == "number" ? value : null;
                this.setWrapLimitRange(col, col);
                this.setUseWrapMode(true);
            }
        },
        get: function() {
            if (this.getUseWrapMode()) {
                if (this.$wrap == -1)
                    return "printMargin";
                if (!this.getWrapLimitRange().min)
                    return "free";
                return this.$wrap;
            }
            return "off";
        },
        handlesSet: true
    },    
    wrapMethod: {
        set: function(val) {
            val = val == "auto"
                ? this.$mode.type != "text"
                : val != "text";
            if (val != this.$wrapAsCode) {
                this.$wrapAsCode = val;
                if (this.$useWrapMode) {
                    this.$modified = true;
                    this.$resetRowCache(0);
                    this.$updateWrapData(0, this.getLength() - 1);
                }
            }
        },
        initialValue: "auto"
    },
    indentedSoftWrap: { initialValue: true },
    firstLineNumber: {
        set: function() {this._signal("changeBreakpoint");},
        initialValue: 1
    },
    useWorker: {
        set: function(useWorker) {
            this.$useWorker = useWorker;

            this.$stopWorker();
            if (useWorker)
                this.$startWorker();
        },
        initialValue: true
    },
    useSoftTabs: {initialValue: true},
    tabSize: {
        set: function(tabSize) {
            if (isNaN(tabSize) || this.$tabSize === tabSize) return;

            this.$modified = true;
            this.$rowLengthCache = [];
            this.$tabSize = tabSize;
            this._signal("changeTabSize");
        },
        initialValue: 4,
        handlesSet: true
    },
    navigateWithinSoftTabs: {initialValue: false},
    overwrite: {
        set: function(val) {this._signal("changeOverwrite");},
        initialValue: false
    },
    newLineMode: {
        set: function(val) {this.doc.setNewLineMode(val);},
        get: function() {return this.doc.getNewLineMode();},
        handlesSet: true
    },
    mode: {
        set: function(val) { this.setMode(val); },
        get: function() { return this.$modeId; }
    }
});

exports.EditSession = EditSession;
});

ace.define("ace/search",["require","exports","module","ace/lib/lang","ace/lib/oop","ace/range"], function(acequire, exports, module) {
"use strict";

var lang = acequire("./lib/lang");
var oop = acequire("./lib/oop");
var Range = acequire("./range").Range;

var Search = function() {
    this.$options = {};
};

(function() {
    this.set = function(options) {
        oop.mixin(this.$options, options);
        return this;
    };
    this.getOptions = function() {
        return lang.copyObject(this.$options);
    };
    this.setOptions = function(options) {
        this.$options = options;
    };
    this.find = function(session) {
        var options = this.$options;
        var iterator = this.$matchIterator(session, options);
        if (!iterator)
            return false;

        var firstRange = null;
        iterator.forEach(function(sr, sc, er, ec) {
            firstRange = new Range(sr, sc, er, ec);
            if (sc == ec && options.start && options.start.start
                && options.skipCurrent != false && firstRange.isEqual(options.start)
            ) {
                firstRange = null;
                return false;
            }

            return true;
        });

        return firstRange;
    };
    this.findAll = function(session) {
        var options = this.$options;
        if (!options.needle)
            return [];
        this.$assembleRegExp(options);

        var range = options.range;
        var lines = range
            ? session.getLines(range.start.row, range.end.row)
            : session.doc.getAllLines();

        var ranges = [];
        var re = options.re;
        if (options.$isMultiLine) {
            var len = re.length;
            var maxRow = lines.length - len;
            var prevRange;
            outer: for (var row = re.offset || 0; row <= maxRow; row++) {
                for (var j = 0; j < len; j++)
                    if (lines[row + j].search(re[j]) == -1)
                        continue outer;
                
                var startLine = lines[row];
                var line = lines[row + len - 1];
                var startIndex = startLine.length - startLine.match(re[0])[0].length;
                var endIndex = line.match(re[len - 1])[0].length;
                
                if (prevRange && prevRange.end.row === row &&
                    prevRange.end.column > startIndex
                ) {
                    continue;
                }
                ranges.push(prevRange = new Range(
                    row, startIndex, row + len - 1, endIndex
                ));
                if (len > 2)
                    row = row + len - 2;
            }
        } else {
            for (var i = 0; i < lines.length; i++) {
                var matches = lang.getMatchOffsets(lines[i], re);
                for (var j = 0; j < matches.length; j++) {
                    var match = matches[j];
                    ranges.push(new Range(i, match.offset, i, match.offset + match.length));
                }
            }
        }

        if (range) {
            var startColumn = range.start.column;
            var endColumn = range.start.column;
            var i = 0, j = ranges.length - 1;
            while (i < j && ranges[i].start.column < startColumn && ranges[i].start.row == range.start.row)
                i++;

            while (i < j && ranges[j].end.column > endColumn && ranges[j].end.row == range.end.row)
                j--;
            
            ranges = ranges.slice(i, j + 1);
            for (i = 0, j = ranges.length; i < j; i++) {
                ranges[i].start.row += range.start.row;
                ranges[i].end.row += range.start.row;
            }
        }

        return ranges;
    };
    this.replace = function(input, replacement) {
        var options = this.$options;

        var re = this.$assembleRegExp(options);
        if (options.$isMultiLine)
            return replacement;

        if (!re)
            return;

        var match = re.exec(input);
        if (!match || match[0].length != input.length)
            return null;
        
        replacement = input.replace(re, replacement);
        if (options.preserveCase) {
            replacement = replacement.split("");
            for (var i = Math.min(input.length, input.length); i--; ) {
                var ch = input[i];
                if (ch && ch.toLowerCase() != ch)
                    replacement[i] = replacement[i].toUpperCase();
                else
                    replacement[i] = replacement[i].toLowerCase();
            }
            replacement = replacement.join("");
        }
        
        return replacement;
    };

    this.$assembleRegExp = function(options, $disableFakeMultiline) {
        if (options.needle instanceof RegExp)
            return options.re = options.needle;

        var needle = options.needle;

        if (!options.needle)
            return options.re = false;

        if (!options.regExp)
            needle = lang.escapeRegExp(needle);

        if (options.wholeWord)
            needle = addWordBoundary(needle, options);

        var modifier = options.caseSensitive ? "gm" : "gmi";

        options.$isMultiLine = !$disableFakeMultiline && /[\n\r]/.test(needle);
        if (options.$isMultiLine)
            return options.re = this.$assembleMultilineRegExp(needle, modifier);

        try {
            var re = new RegExp(needle, modifier);
        } catch(e) {
            re = false;
        }
        return options.re = re;
    };

    this.$assembleMultilineRegExp = function(needle, modifier) {
        var parts = needle.replace(/\r\n|\r|\n/g, "$\n^").split("\n");
        var re = [];
        for (var i = 0; i < parts.length; i++) try {
            re.push(new RegExp(parts[i], modifier));
        } catch(e) {
            return false;
        }
        return re;
    };

    this.$matchIterator = function(session, options) {
        var re = this.$assembleRegExp(options);
        if (!re)
            return false;
        var backwards = options.backwards == true;
        var skipCurrent = options.skipCurrent != false;

        var range = options.range;
        var start = options.start;
        if (!start)
            start = range ? range[backwards ? "end" : "start"] : session.selection.getRange();
         
        if (start.start)
            start = start[skipCurrent != backwards ? "end" : "start"];

        var firstRow = range ? range.start.row : 0;
        var lastRow = range ? range.end.row : session.getLength() - 1;

        if (backwards) {
            var forEach = function(callback) {
                var row = start.row;
                if (forEachInLine(row, start.column, callback))
                    return;
                for (row--; row >= firstRow; row--)
                    if (forEachInLine(row, Number.MAX_VALUE, callback))
                        return;
                if (options.wrap == false)
                    return;
                for (row = lastRow, firstRow = start.row; row >= firstRow; row--)
                    if (forEachInLine(row, Number.MAX_VALUE, callback))
                        return;
            };
        }
        else {
            var forEach = function(callback) {
                var row = start.row;
                if (forEachInLine(row, start.column, callback))
                    return;
                for (row = row + 1; row <= lastRow; row++)
                    if (forEachInLine(row, 0, callback))
                        return;
                if (options.wrap == false)
                    return;
                for (row = firstRow, lastRow = start.row; row <= lastRow; row++)
                    if (forEachInLine(row, 0, callback))
                        return;
            };
        }
        
        if (options.$isMultiLine) {
            var len = re.length;
            var forEachInLine = function(row, offset, callback) {
                var startRow = backwards ? row - len + 1 : row;
                if (startRow < 0) return;
                var line = session.getLine(startRow);
                var startIndex = line.search(re[0]);
                if (!backwards && startIndex < offset || startIndex === -1) return;
                for (var i = 1; i < len; i++) {
                    line = session.getLine(startRow + i);
                    if (line.search(re[i]) == -1)
                        return;
                }
                var endIndex = line.match(re[len - 1])[0].length;
                if (backwards && endIndex > offset) return;
                if (callback(startRow, startIndex, startRow + len - 1, endIndex))
                    return true;
            };
        }
        else if (backwards) {
            var forEachInLine = function(row, endIndex, callback) {
                var line = session.getLine(row);
                var matches = [];
                var m, last = 0;
                re.lastIndex = 0;
                while((m = re.exec(line))) {
                    var length = m[0].length;
                    last = m.index;
                    if (!length) {
                        if (last >= line.length) break;
                        re.lastIndex = last += 1;
                    }
                    if (m.index + length > endIndex)
                        break;
                    matches.push(m.index, length);
                }
                for (var i = matches.length - 1; i >= 0; i -= 2) {
                    var column = matches[i - 1];
                    var length = matches[i];
                    if (callback(row, column, row, column + length))
                        return true;
                }
            };
        }
        else {
            var forEachInLine = function(row, startIndex, callback) {
                var line = session.getLine(row);
                var m;
                var last = startIndex;
                re.lastIndex = startIndex;
                while((m = re.exec(line))) {
                    var length = m[0].length;
                    last = m.index;
                    if (callback(row, last, row,last + length))
                        return true;
                    if (!length) {
                        re.lastIndex = last += 1;
                        if (last >= line.length) return false;
                    }
                }
            };
        }
        return {forEach: forEach};
    };

}).call(Search.prototype);

function addWordBoundary(needle, options) {
    function wordBoundary(c) {
        if (/\w/.test(c) || options.regExp) return "\\b";
        return "";
    }
    return wordBoundary(needle[0]) + needle
        + wordBoundary(needle[needle.length - 1]);
}

exports.Search = Search;
});

ace.define("ace/keyboard/hash_handler",["require","exports","module","ace/lib/keys","ace/lib/useragent"], function(acequire, exports, module) {
"use strict";

var keyUtil = acequire("../lib/keys");
var useragent = acequire("../lib/useragent");
var KEY_MODS = keyUtil.KEY_MODS;

function HashHandler(config, platform) {
    this.platform = platform || (useragent.isMac ? "mac" : "win");
    this.commands = {};
    this.commandKeyBinding = {};
    this.addCommands(config);
    this.$singleCommand = true;
}

function MultiHashHandler(config, platform) {
    HashHandler.call(this, config, platform);
    this.$singleCommand = false;
}

MultiHashHandler.prototype = HashHandler.prototype;

(function() {
    

    this.addCommand = function(command) {
        if (this.commands[command.name])
            this.removeCommand(command);

        this.commands[command.name] = command;

        if (command.bindKey)
            this._buildKeyHash(command);
    };

    this.removeCommand = function(command, keepCommand) {
        var name = command && (typeof command === 'string' ? command : command.name);
        command = this.commands[name];
        if (!keepCommand)
            delete this.commands[name];
        var ckb = this.commandKeyBinding;
        for (var keyId in ckb) {
            var cmdGroup = ckb[keyId];
            if (cmdGroup == command) {
                delete ckb[keyId];
            } else if (Array.isArray(cmdGroup)) {
                var i = cmdGroup.indexOf(command);
                if (i != -1) {
                    cmdGroup.splice(i, 1);
                    if (cmdGroup.length == 1)
                        ckb[keyId] = cmdGroup[0];
                }
            }
        }
    };

    this.bindKey = function(key, command, position) {
        if (typeof key == "object" && key) {
            if (position == undefined)
                position = key.position;
            key = key[this.platform];
        }
        if (!key)
            return;
        if (typeof command == "function")
            return this.addCommand({exec: command, bindKey: key, name: command.name || key});
        
        key.split("|").forEach(function(keyPart) {
            var chain = "";
            if (keyPart.indexOf(" ") != -1) {
                var parts = keyPart.split(/\s+/);
                keyPart = parts.pop();
                parts.forEach(function(keyPart) {
                    var binding = this.parseKeys(keyPart);
                    var id = KEY_MODS[binding.hashId] + binding.key;
                    chain += (chain ? " " : "") + id;
                    this._addCommandToBinding(chain, "chainKeys");
                }, this);
                chain += " ";
            }
            var binding = this.parseKeys(keyPart);
            var id = KEY_MODS[binding.hashId] + binding.key;
            this._addCommandToBinding(chain + id, command, position);
        }, this);
    };
    
    function getPosition(command) {
        return typeof command == "object" && command.bindKey
            && command.bindKey.position
            || (command.isDefault ? -100 : 0);
    }
    this._addCommandToBinding = function(keyId, command, position) {
        var ckb = this.commandKeyBinding, i;
        if (!command) {
            delete ckb[keyId];
        } else if (!ckb[keyId] || this.$singleCommand) {
            ckb[keyId] = command;
        } else {
            if (!Array.isArray(ckb[keyId])) {
                ckb[keyId] = [ckb[keyId]];
            } else if ((i = ckb[keyId].indexOf(command)) != -1) {
                ckb[keyId].splice(i, 1);
            }

            if (typeof position != "number") {
                position = getPosition(command);
            }

            var commands = ckb[keyId];
            for (i = 0; i < commands.length; i++) {
                var other = commands[i];
                var otherPos = getPosition(other);
                if (otherPos > position)
                    break;
            }
            commands.splice(i, 0, command);
        }
    };

    this.addCommands = function(commands) {
        commands && Object.keys(commands).forEach(function(name) {
            var command = commands[name];
            if (!command)
                return;
            
            if (typeof command === "string")
                return this.bindKey(command, name);

            if (typeof command === "function")
                command = { exec: command };

            if (typeof command !== "object")
                return;

            if (!command.name)
                command.name = name;

            this.addCommand(command);
        }, this);
    };

    this.removeCommands = function(commands) {
        Object.keys(commands).forEach(function(name) {
            this.removeCommand(commands[name]);
        }, this);
    };

    this.bindKeys = function(keyList) {
        Object.keys(keyList).forEach(function(key) {
            this.bindKey(key, keyList[key]);
        }, this);
    };

    this._buildKeyHash = function(command) {
        this.bindKey(command.bindKey, command);
    };
    this.parseKeys = function(keys) {
        var parts = keys.toLowerCase().split(/[\-\+]([\-\+])?/).filter(function(x){return x;});
        var key = parts.pop();

        var keyCode = keyUtil[key];
        if (keyUtil.FUNCTION_KEYS[keyCode])
            key = keyUtil.FUNCTION_KEYS[keyCode].toLowerCase();
        else if (!parts.length)
            return {key: key, hashId: -1};
        else if (parts.length == 1 && parts[0] == "shift")
            return {key: key.toUpperCase(), hashId: -1};

        var hashId = 0;
        for (var i = parts.length; i--;) {
            var modifier = keyUtil.KEY_MODS[parts[i]];
            if (modifier == null) {
                if (typeof console != "undefined")
                    console.error("invalid modifier " + parts[i] + " in " + keys);
                return false;
            }
            hashId |= modifier;
        }
        return {key: key, hashId: hashId};
    };

    this.findKeyCommand = function findKeyCommand(hashId, keyString) {
        var key = KEY_MODS[hashId] + keyString;
        return this.commandKeyBinding[key];
    };

    this.handleKeyboard = function(data, hashId, keyString, keyCode) {
        if (keyCode < 0) return;
        var key = KEY_MODS[hashId] + keyString;
        var command = this.commandKeyBinding[key];
        if (data.$keyChain) {
            data.$keyChain += " " + key;
            command = this.commandKeyBinding[data.$keyChain] || command;
        }
        
        if (command) {
            if (command == "chainKeys" || command[command.length - 1] == "chainKeys") {
                data.$keyChain = data.$keyChain || key;
                return {command: "null"};
            }
        }
        
        if (data.$keyChain) {
            if ((!hashId || hashId == 4) && keyString.length == 1)
                data.$keyChain = data.$keyChain.slice(0, -key.length - 1); // wait for input
            else if (hashId == -1 || keyCode > 0)
                data.$keyChain = ""; // reset keyChain
        }
        return {command: command};
    };
    
    this.getStatusText = function(editor, data) {
        return data.$keyChain || "";
    };

}).call(HashHandler.prototype);

exports.HashHandler = HashHandler;
exports.MultiHashHandler = MultiHashHandler;
});

ace.define("ace/commands/command_manager",["require","exports","module","ace/lib/oop","ace/keyboard/hash_handler","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../lib/oop");
var MultiHashHandler = acequire("../keyboard/hash_handler").MultiHashHandler;
var EventEmitter = acequire("../lib/event_emitter").EventEmitter;

var CommandManager = function(platform, commands) {
    MultiHashHandler.call(this, commands, platform);
    this.byName = this.commands;
    this.setDefaultHandler("exec", function(e) {
        return e.command.exec(e.editor, e.args || {});
    });
};

oop.inherits(CommandManager, MultiHashHandler);

(function() {

    oop.implement(this, EventEmitter);

    this.exec = function(command, editor, args) {
        if (Array.isArray(command)) {
            for (var i = command.length; i--; ) {
                if (this.exec(command[i], editor, args)) return true;
            }
            return false;
        }

        if (typeof command === "string")
            command = this.commands[command];

        if (!command)
            return false;

        if (editor && editor.$readOnly && !command.readOnly)
            return false;

        if (command.isAvailable && !command.isAvailable(editor))
            return false;

        var e = {editor: editor, command: command, args: args};
        e.returnValue = this._emit("exec", e);
        this._signal("afterExec", e);

        return e.returnValue === false ? false : true;
    };

    this.toggleRecording = function(editor) {
        if (this.$inReplay)
            return;

        editor && editor._emit("changeStatus");
        if (this.recording) {
            this.macro.pop();
            this.removeEventListener("exec", this.$addCommandToMacro);

            if (!this.macro.length)
                this.macro = this.oldMacro;

            return this.recording = false;
        }
        if (!this.$addCommandToMacro) {
            this.$addCommandToMacro = function(e) {
                this.macro.push([e.command, e.args]);
            }.bind(this);
        }

        this.oldMacro = this.macro;
        this.macro = [];
        this.on("exec", this.$addCommandToMacro);
        return this.recording = true;
    };

    this.replay = function(editor) {
        if (this.$inReplay || !this.macro)
            return;

        if (this.recording)
            return this.toggleRecording(editor);

        try {
            this.$inReplay = true;
            this.macro.forEach(function(x) {
                if (typeof x == "string")
                    this.exec(x, editor);
                else
                    this.exec(x[0], editor, x[1]);
            }, this);
        } finally {
            this.$inReplay = false;
        }
    };

    this.trimMacro = function(m) {
        return m.map(function(x){
            if (typeof x[0] != "string")
                x[0] = x[0].name;
            if (!x[1])
                x = x[0];
            return x;
        });
    };

}).call(CommandManager.prototype);

exports.CommandManager = CommandManager;

});

ace.define("ace/commands/default_commands",["require","exports","module","ace/lib/lang","ace/config","ace/range"], function(acequire, exports, module) {
"use strict";

var lang = acequire("../lib/lang");
var config = acequire("../config");
var Range = acequire("../range").Range;

function bindKey(win, mac) {
    return {win: win, mac: mac};
}
exports.commands = [{
    name: "showSettingsMenu",
    bindKey: bindKey("Ctrl-,", "Command-,"),
    exec: function(editor) {
        config.loadModule("ace/ext/settings_menu", function(module) {
            module.init(editor);
            editor.showSettingsMenu();
        });
    },
    readOnly: true
}, {
    name: "goToNextError",
    bindKey: bindKey("Alt-E", "F4"),
    exec: function(editor) {
        config.loadModule("ace/ext/error_marker", function(module) {
            module.showErrorMarker(editor, 1);
        });
    },
    scrollIntoView: "animate",
    readOnly: true
}, {
    name: "goToPreviousError",
    bindKey: bindKey("Alt-Shift-E", "Shift-F4"),
    exec: function(editor) {
        config.loadModule("ace/ext/error_marker", function(module) {
            module.showErrorMarker(editor, -1);
        });
    },
    scrollIntoView: "animate",
    readOnly: true
}, {
    name: "selectall",
    bindKey: bindKey("Ctrl-A", "Command-A"),
    exec: function(editor) { editor.selectAll(); },
    readOnly: true
}, {
    name: "centerselection",
    bindKey: bindKey(null, "Ctrl-L"),
    exec: function(editor) { editor.centerSelection(); },
    readOnly: true
}, {
    name: "gotoline",
    bindKey: bindKey("Ctrl-L", "Command-L"),
    exec: function(editor) {
        var line = parseInt(prompt("Enter line number:"), 10);
        if (!isNaN(line)) {
            editor.gotoLine(line);
        }
    },
    readOnly: true
}, {
    name: "fold",
    bindKey: bindKey("Alt-L|Ctrl-F1", "Command-Alt-L|Command-F1"),
    exec: function(editor) { editor.session.toggleFold(false); },
    multiSelectAction: "forEach",
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "unfold",
    bindKey: bindKey("Alt-Shift-L|Ctrl-Shift-F1", "Command-Alt-Shift-L|Command-Shift-F1"),
    exec: function(editor) { editor.session.toggleFold(true); },
    multiSelectAction: "forEach",
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "toggleFoldWidget",
    bindKey: bindKey("F2", "F2"),
    exec: function(editor) { editor.session.toggleFoldWidget(); },
    multiSelectAction: "forEach",
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "toggleParentFoldWidget",
    bindKey: bindKey("Alt-F2", "Alt-F2"),
    exec: function(editor) { editor.session.toggleFoldWidget(true); },
    multiSelectAction: "forEach",
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "foldall",
    bindKey: bindKey(null, "Ctrl-Command-Option-0"),
    exec: function(editor) { editor.session.foldAll(); },
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "foldOther",
    bindKey: bindKey("Alt-0", "Command-Option-0"),
    exec: function(editor) { 
        editor.session.foldAll();
        editor.session.unfold(editor.selection.getAllRanges());
    },
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "unfoldall",
    bindKey: bindKey("Alt-Shift-0", "Command-Option-Shift-0"),
    exec: function(editor) { editor.session.unfold(); },
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "findnext",
    bindKey: bindKey("Ctrl-K", "Command-G"),
    exec: function(editor) { editor.findNext(); },
    multiSelectAction: "forEach",
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "findprevious",
    bindKey: bindKey("Ctrl-Shift-K", "Command-Shift-G"),
    exec: function(editor) { editor.findPrevious(); },
    multiSelectAction: "forEach",
    scrollIntoView: "center",
    readOnly: true
}, {
    name: "selectOrFindNext",
    bindKey: bindKey("Alt-K", "Ctrl-G"),
    exec: function(editor) {
        if (editor.selection.isEmpty())
            editor.selection.selectWord();
        else
            editor.findNext(); 
    },
    readOnly: true
}, {
    name: "selectOrFindPrevious",
    bindKey: bindKey("Alt-Shift-K", "Ctrl-Shift-G"),
    exec: function(editor) { 
        if (editor.selection.isEmpty())
            editor.selection.selectWord();
        else
            editor.findPrevious();
    },
    readOnly: true
}, {
    name: "find",
    bindKey: bindKey("Ctrl-F", "Command-F"),
    exec: function(editor) {
        config.loadModule("ace/ext/searchbox", function(e) {e.Search(editor);});
    },
    readOnly: true
}, {
    name: "overwrite",
    bindKey: "Insert",
    exec: function(editor) { editor.toggleOverwrite(); },
    readOnly: true
}, {
    name: "selecttostart",
    bindKey: bindKey("Ctrl-Shift-Home", "Command-Shift-Home|Command-Shift-Up"),
    exec: function(editor) { editor.getSelection().selectFileStart(); },
    multiSelectAction: "forEach",
    readOnly: true,
    scrollIntoView: "animate",
    aceCommandGroup: "fileJump"
}, {
    name: "gotostart",
    bindKey: bindKey("Ctrl-Home", "Command-Home|Command-Up"),
    exec: function(editor) { editor.navigateFileStart(); },
    multiSelectAction: "forEach",
    readOnly: true,
    scrollIntoView: "animate",
    aceCommandGroup: "fileJump"
}, {
    name: "selectup",
    bindKey: bindKey("Shift-Up", "Shift-Up|Ctrl-Shift-P"),
    exec: function(editor) { editor.getSelection().selectUp(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "golineup",
    bindKey: bindKey("Up", "Up|Ctrl-P"),
    exec: function(editor, args) { editor.navigateUp(args.times); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selecttoend",
    bindKey: bindKey("Ctrl-Shift-End", "Command-Shift-End|Command-Shift-Down"),
    exec: function(editor) { editor.getSelection().selectFileEnd(); },
    multiSelectAction: "forEach",
    readOnly: true,
    scrollIntoView: "animate",
    aceCommandGroup: "fileJump"
}, {
    name: "gotoend",
    bindKey: bindKey("Ctrl-End", "Command-End|Command-Down"),
    exec: function(editor) { editor.navigateFileEnd(); },
    multiSelectAction: "forEach",
    readOnly: true,
    scrollIntoView: "animate",
    aceCommandGroup: "fileJump"
}, {
    name: "selectdown",
    bindKey: bindKey("Shift-Down", "Shift-Down|Ctrl-Shift-N"),
    exec: function(editor) { editor.getSelection().selectDown(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "golinedown",
    bindKey: bindKey("Down", "Down|Ctrl-N"),
    exec: function(editor, args) { editor.navigateDown(args.times); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectwordleft",
    bindKey: bindKey("Ctrl-Shift-Left", "Option-Shift-Left"),
    exec: function(editor) { editor.getSelection().selectWordLeft(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "gotowordleft",
    bindKey: bindKey("Ctrl-Left", "Option-Left"),
    exec: function(editor) { editor.navigateWordLeft(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selecttolinestart",
    bindKey: bindKey("Alt-Shift-Left", "Command-Shift-Left|Ctrl-Shift-A"),
    exec: function(editor) { editor.getSelection().selectLineStart(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "gotolinestart",
    bindKey: bindKey("Alt-Left|Home", "Command-Left|Home|Ctrl-A"),
    exec: function(editor) { editor.navigateLineStart(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectleft",
    bindKey: bindKey("Shift-Left", "Shift-Left|Ctrl-Shift-B"),
    exec: function(editor) { editor.getSelection().selectLeft(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "gotoleft",
    bindKey: bindKey("Left", "Left|Ctrl-B"),
    exec: function(editor, args) { editor.navigateLeft(args.times); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectwordright",
    bindKey: bindKey("Ctrl-Shift-Right", "Option-Shift-Right"),
    exec: function(editor) { editor.getSelection().selectWordRight(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "gotowordright",
    bindKey: bindKey("Ctrl-Right", "Option-Right"),
    exec: function(editor) { editor.navigateWordRight(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selecttolineend",
    bindKey: bindKey("Alt-Shift-Right", "Command-Shift-Right|Shift-End|Ctrl-Shift-E"),
    exec: function(editor) { editor.getSelection().selectLineEnd(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "gotolineend",
    bindKey: bindKey("Alt-Right|End", "Command-Right|End|Ctrl-E"),
    exec: function(editor) { editor.navigateLineEnd(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectright",
    bindKey: bindKey("Shift-Right", "Shift-Right"),
    exec: function(editor) { editor.getSelection().selectRight(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "gotoright",
    bindKey: bindKey("Right", "Right|Ctrl-F"),
    exec: function(editor, args) { editor.navigateRight(args.times); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectpagedown",
    bindKey: "Shift-PageDown",
    exec: function(editor) { editor.selectPageDown(); },
    readOnly: true
}, {
    name: "pagedown",
    bindKey: bindKey(null, "Option-PageDown"),
    exec: function(editor) { editor.scrollPageDown(); },
    readOnly: true
}, {
    name: "gotopagedown",
    bindKey: bindKey("PageDown", "PageDown|Ctrl-V"),
    exec: function(editor) { editor.gotoPageDown(); },
    readOnly: true
}, {
    name: "selectpageup",
    bindKey: "Shift-PageUp",
    exec: function(editor) { editor.selectPageUp(); },
    readOnly: true
}, {
    name: "pageup",
    bindKey: bindKey(null, "Option-PageUp"),
    exec: function(editor) { editor.scrollPageUp(); },
    readOnly: true
}, {
    name: "gotopageup",
    bindKey: "PageUp",
    exec: function(editor) { editor.gotoPageUp(); },
    readOnly: true
}, {
    name: "scrollup",
    bindKey: bindKey("Ctrl-Up", null),
    exec: function(e) { e.renderer.scrollBy(0, -2 * e.renderer.layerConfig.lineHeight); },
    readOnly: true
}, {
    name: "scrolldown",
    bindKey: bindKey("Ctrl-Down", null),
    exec: function(e) { e.renderer.scrollBy(0, 2 * e.renderer.layerConfig.lineHeight); },
    readOnly: true
}, {
    name: "selectlinestart",
    bindKey: "Shift-Home",
    exec: function(editor) { editor.getSelection().selectLineStart(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectlineend",
    bindKey: "Shift-End",
    exec: function(editor) { editor.getSelection().selectLineEnd(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "togglerecording",
    bindKey: bindKey("Ctrl-Alt-E", "Command-Option-E"),
    exec: function(editor) { editor.commands.toggleRecording(editor); },
    readOnly: true
}, {
    name: "replaymacro",
    bindKey: bindKey("Ctrl-Shift-E", "Command-Shift-E"),
    exec: function(editor) { editor.commands.replay(editor); },
    readOnly: true
}, {
    name: "jumptomatching",
    bindKey: bindKey("Ctrl-P", "Ctrl-P"),
    exec: function(editor) { editor.jumpToMatching(); },
    multiSelectAction: "forEach",
    scrollIntoView: "animate",
    readOnly: true
}, {
    name: "selecttomatching",
    bindKey: bindKey("Ctrl-Shift-P", "Ctrl-Shift-P"),
    exec: function(editor) { editor.jumpToMatching(true); },
    multiSelectAction: "forEach",
    scrollIntoView: "animate",
    readOnly: true
}, {
    name: "expandToMatching",
    bindKey: bindKey("Ctrl-Shift-M", "Ctrl-Shift-M"),
    exec: function(editor) { editor.jumpToMatching(true, true); },
    multiSelectAction: "forEach",
    scrollIntoView: "animate",
    readOnly: true
}, {
    name: "passKeysToBrowser",
    bindKey: bindKey(null, null),
    exec: function() {},
    passEvent: true,
    readOnly: true
}, {
    name: "copy",
    exec: function(editor) {
    },
    readOnly: true
},
{
    name: "cut",
    exec: function(editor) {
        var range = editor.getSelectionRange();
        editor._emit("cut", range);

        if (!editor.selection.isEmpty()) {
            editor.session.remove(range);
            editor.clearSelection();
        }
    },
    scrollIntoView: "cursor",
    multiSelectAction: "forEach"
}, {
    name: "paste",
    exec: function(editor, args) {
        editor.$handlePaste(args);
    },
    scrollIntoView: "cursor"
}, {
    name: "removeline",
    bindKey: bindKey("Ctrl-D", "Command-D"),
    exec: function(editor) { editor.removeLines(); },
    scrollIntoView: "cursor",
    multiSelectAction: "forEachLine"
}, {
    name: "duplicateSelection",
    bindKey: bindKey("Ctrl-Shift-D", "Command-Shift-D"),
    exec: function(editor) { editor.duplicateSelection(); },
    scrollIntoView: "cursor",
    multiSelectAction: "forEach"
}, {
    name: "sortlines",
    bindKey: bindKey("Ctrl-Alt-S", "Command-Alt-S"),
    exec: function(editor) { editor.sortLines(); },
    scrollIntoView: "selection",
    multiSelectAction: "forEachLine"
}, {
    name: "togglecomment",
    bindKey: bindKey("Ctrl-/", "Command-/"),
    exec: function(editor) { editor.toggleCommentLines(); },
    multiSelectAction: "forEachLine",
    scrollIntoView: "selectionPart"
}, {
    name: "toggleBlockComment",
    bindKey: bindKey("Ctrl-Shift-/", "Command-Shift-/"),
    exec: function(editor) { editor.toggleBlockComment(); },
    multiSelectAction: "forEach",
    scrollIntoView: "selectionPart"
}, {
    name: "modifyNumberUp",
    bindKey: bindKey("Ctrl-Shift-Up", "Alt-Shift-Up"),
    exec: function(editor) { editor.modifyNumber(1); },
    scrollIntoView: "cursor",
    multiSelectAction: "forEach"
}, {
    name: "modifyNumberDown",
    bindKey: bindKey("Ctrl-Shift-Down", "Alt-Shift-Down"),
    exec: function(editor) { editor.modifyNumber(-1); },
    scrollIntoView: "cursor",
    multiSelectAction: "forEach"
}, {
    name: "replace",
    bindKey: bindKey("Ctrl-H", "Command-Option-F"),
    exec: function(editor) {
        config.loadModule("ace/ext/searchbox", function(e) {e.Search(editor, true);});
    }
}, {
    name: "undo",
    bindKey: bindKey("Ctrl-Z", "Command-Z"),
    exec: function(editor) { editor.undo(); }
}, {
    name: "redo",
    bindKey: bindKey("Ctrl-Shift-Z|Ctrl-Y", "Command-Shift-Z|Command-Y"),
    exec: function(editor) { editor.redo(); }
}, {
    name: "copylinesup",
    bindKey: bindKey("Alt-Shift-Up", "Command-Option-Up"),
    exec: function(editor) { editor.copyLinesUp(); },
    scrollIntoView: "cursor"
}, {
    name: "movelinesup",
    bindKey: bindKey("Alt-Up", "Option-Up"),
    exec: function(editor) { editor.moveLinesUp(); },
    scrollIntoView: "cursor"
}, {
    name: "copylinesdown",
    bindKey: bindKey("Alt-Shift-Down", "Command-Option-Down"),
    exec: function(editor) { editor.copyLinesDown(); },
    scrollIntoView: "cursor"
}, {
    name: "movelinesdown",
    bindKey: bindKey("Alt-Down", "Option-Down"),
    exec: function(editor) { editor.moveLinesDown(); },
    scrollIntoView: "cursor"
}, {
    name: "del",
    bindKey: bindKey("Delete", "Delete|Ctrl-D|Shift-Delete"),
    exec: function(editor) { editor.remove("right"); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "backspace",
    bindKey: bindKey(
        "Shift-Backspace|Backspace",
        "Ctrl-Backspace|Shift-Backspace|Backspace|Ctrl-H"
    ),
    exec: function(editor) { editor.remove("left"); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "cut_or_delete",
    bindKey: bindKey("Shift-Delete", null),
    exec: function(editor) { 
        if (editor.selection.isEmpty()) {
            editor.remove("left");
        } else {
            return false;
        }
    },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "removetolinestart",
    bindKey: bindKey("Alt-Backspace", "Command-Backspace"),
    exec: function(editor) { editor.removeToLineStart(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "removetolineend",
    bindKey: bindKey("Alt-Delete", "Ctrl-K|Command-Delete"),
    exec: function(editor) { editor.removeToLineEnd(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "removetolinestarthard",
    bindKey: bindKey("Ctrl-Shift-Backspace", null),
    exec: function(editor) {
        var range = editor.selection.getRange();
        range.start.column = 0;
        editor.session.remove(range);
    },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "removetolineendhard",
    bindKey: bindKey("Ctrl-Shift-Delete", null),
    exec: function(editor) {
        var range = editor.selection.getRange();
        range.end.column = Number.MAX_VALUE;
        editor.session.remove(range);
    },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "removewordleft",
    bindKey: bindKey("Ctrl-Backspace", "Alt-Backspace|Ctrl-Alt-Backspace"),
    exec: function(editor) { editor.removeWordLeft(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "removewordright",
    bindKey: bindKey("Ctrl-Delete", "Alt-Delete"),
    exec: function(editor) { editor.removeWordRight(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "outdent",
    bindKey: bindKey("Shift-Tab", "Shift-Tab"),
    exec: function(editor) { editor.blockOutdent(); },
    multiSelectAction: "forEach",
    scrollIntoView: "selectionPart"
}, {
    name: "indent",
    bindKey: bindKey("Tab", "Tab"),
    exec: function(editor) { editor.indent(); },
    multiSelectAction: "forEach",
    scrollIntoView: "selectionPart"
}, {
    name: "blockoutdent",
    bindKey: bindKey("Ctrl-[", "Ctrl-["),
    exec: function(editor) { editor.blockOutdent(); },
    multiSelectAction: "forEachLine",
    scrollIntoView: "selectionPart"
}, {
    name: "blockindent",
    bindKey: bindKey("Ctrl-]", "Ctrl-]"),
    exec: function(editor) { editor.blockIndent(); },
    multiSelectAction: "forEachLine",
    scrollIntoView: "selectionPart"
}, {
    name: "insertstring",
    exec: function(editor, str) { editor.insert(str); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "inserttext",
    exec: function(editor, args) {
        editor.insert(lang.stringRepeat(args.text  || "", args.times || 1));
    },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "splitline",
    bindKey: bindKey(null, "Ctrl-O"),
    exec: function(editor) { editor.splitLine(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "transposeletters",
    bindKey: bindKey("Alt-Shift-X", "Ctrl-T"),
    exec: function(editor) { editor.transposeLetters(); },
    multiSelectAction: function(editor) {editor.transposeSelections(1); },
    scrollIntoView: "cursor"
}, {
    name: "touppercase",
    bindKey: bindKey("Ctrl-U", "Ctrl-U"),
    exec: function(editor) { editor.toUpperCase(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "tolowercase",
    bindKey: bindKey("Ctrl-Shift-U", "Ctrl-Shift-U"),
    exec: function(editor) { editor.toLowerCase(); },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor"
}, {
    name: "expandtoline",
    bindKey: bindKey("Ctrl-Shift-L", "Command-Shift-L"),
    exec: function(editor) {
        var range = editor.selection.getRange();

        range.start.column = range.end.column = 0;
        range.end.row++;
        editor.selection.setRange(range, false);
    },
    multiSelectAction: "forEach",
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "joinlines",
    bindKey: bindKey(null, null),
    exec: function(editor) {
        var isBackwards = editor.selection.isBackwards();
        var selectionStart = isBackwards ? editor.selection.getSelectionLead() : editor.selection.getSelectionAnchor();
        var selectionEnd = isBackwards ? editor.selection.getSelectionAnchor() : editor.selection.getSelectionLead();
        var firstLineEndCol = editor.session.doc.getLine(selectionStart.row).length;
        var selectedText = editor.session.doc.getTextRange(editor.selection.getRange());
        var selectedCount = selectedText.replace(/\n\s*/, " ").length;
        var insertLine = editor.session.doc.getLine(selectionStart.row);

        for (var i = selectionStart.row + 1; i <= selectionEnd.row + 1; i++) {
            var curLine = lang.stringTrimLeft(lang.stringTrimRight(editor.session.doc.getLine(i)));
            if (curLine.length !== 0) {
                curLine = " " + curLine;
            }
            insertLine += curLine;
        }

        if (selectionEnd.row + 1 < (editor.session.doc.getLength() - 1)) {
            insertLine += editor.session.doc.getNewLineCharacter();
        }

        editor.clearSelection();
        editor.session.doc.replace(new Range(selectionStart.row, 0, selectionEnd.row + 2, 0), insertLine);

        if (selectedCount > 0) {
            editor.selection.moveCursorTo(selectionStart.row, selectionStart.column);
            editor.selection.selectTo(selectionStart.row, selectionStart.column + selectedCount);
        } else {
            firstLineEndCol = editor.session.doc.getLine(selectionStart.row).length > firstLineEndCol ? (firstLineEndCol + 1) : firstLineEndCol;
            editor.selection.moveCursorTo(selectionStart.row, firstLineEndCol);
        }
    },
    multiSelectAction: "forEach",
    readOnly: true
}, {
    name: "invertSelection",
    bindKey: bindKey(null, null),
    exec: function(editor) {
        var endRow = editor.session.doc.getLength() - 1;
        var endCol = editor.session.doc.getLine(endRow).length;
        var ranges = editor.selection.rangeList.ranges;
        var newRanges = [];
        if (ranges.length < 1) {
            ranges = [editor.selection.getRange()];
        }

        for (var i = 0; i < ranges.length; i++) {
            if (i == (ranges.length - 1)) {
                if (!(ranges[i].end.row === endRow && ranges[i].end.column === endCol)) {
                    newRanges.push(new Range(ranges[i].end.row, ranges[i].end.column, endRow, endCol));
                }
            }

            if (i === 0) {
                if (!(ranges[i].start.row === 0 && ranges[i].start.column === 0)) {
                    newRanges.push(new Range(0, 0, ranges[i].start.row, ranges[i].start.column));
                }
            } else {
                newRanges.push(new Range(ranges[i-1].end.row, ranges[i-1].end.column, ranges[i].start.row, ranges[i].start.column));
            }
        }

        editor.exitMultiSelectMode();
        editor.clearSelection();

        for(var i = 0; i < newRanges.length; i++) {
            editor.selection.addRange(newRanges[i], false);
        }
    },
    readOnly: true,
    scrollIntoView: "none"
}];

});

ace.define("ace/editor",["require","exports","module","ace/lib/fixoldbrowsers","ace/lib/oop","ace/lib/dom","ace/lib/lang","ace/lib/useragent","ace/keyboard/textinput","ace/mouse/mouse_handler","ace/mouse/fold_handler","ace/keyboard/keybinding","ace/edit_session","ace/search","ace/range","ace/lib/event_emitter","ace/commands/command_manager","ace/commands/default_commands","ace/config","ace/token_iterator"], function(acequire, exports, module) {
"use strict";

acequire("./lib/fixoldbrowsers");

var oop = acequire("./lib/oop");
var dom = acequire("./lib/dom");
var lang = acequire("./lib/lang");
var useragent = acequire("./lib/useragent");
var TextInput = acequire("./keyboard/textinput").TextInput;
var MouseHandler = acequire("./mouse/mouse_handler").MouseHandler;
var FoldHandler = acequire("./mouse/fold_handler").FoldHandler;
var KeyBinding = acequire("./keyboard/keybinding").KeyBinding;
var EditSession = acequire("./edit_session").EditSession;
var Search = acequire("./search").Search;
var Range = acequire("./range").Range;
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var CommandManager = acequire("./commands/command_manager").CommandManager;
var defaultCommands = acequire("./commands/default_commands").commands;
var config = acequire("./config");
var TokenIterator = acequire("./token_iterator").TokenIterator;
var Editor = function(renderer, session) {
    var container = renderer.getContainerElement();
    this.container = container;
    this.renderer = renderer;
    this.id = "editor" + (++Editor.$uid);

    this.commands = new CommandManager(useragent.isMac ? "mac" : "win", defaultCommands);
    if (typeof document == "object") {
        this.textInput  = new TextInput(renderer.getTextAreaContainer(), this);
        this.renderer.textarea = this.textInput.getElement();
        this.$mouseHandler = new MouseHandler(this);
        new FoldHandler(this);
    }

    this.keyBinding = new KeyBinding(this);

    this.$blockScrolling = 0;
    this.$search = new Search().set({
        wrap: true
    });

    this.$historyTracker = this.$historyTracker.bind(this);
    this.commands.on("exec", this.$historyTracker);

    this.$initOperationListeners();
    
    this._$emitInputEvent = lang.delayedCall(function() {
        this._signal("input", {});
        if (this.session && this.session.bgTokenizer)
            this.session.bgTokenizer.scheduleStart();
    }.bind(this));
    
    this.on("change", function(_, _self) {
        _self._$emitInputEvent.schedule(31);
    });

    this.setSession(session || new EditSession(""));
    config.resetOptions(this);
    config._signal("editor", this);
};

Editor.$uid = 0;

(function(){

    oop.implement(this, EventEmitter);

    this.$initOperationListeners = function() {
        function last(a) {return a[a.length - 1];}

        this.selections = [];
        this.commands.on("exec", this.startOperation.bind(this), true);
        this.commands.on("afterExec", this.endOperation.bind(this), true);

        this.$opResetTimer = lang.delayedCall(this.endOperation.bind(this));

        this.on("change", function() {
            this.curOp || this.startOperation();
            this.curOp.docChanged = true;
        }.bind(this), true);

        this.on("changeSelection", function() {
            this.curOp || this.startOperation();
            this.curOp.selectionChanged = true;
        }.bind(this), true);
    };

    this.curOp = null;
    this.prevOp = {};
    this.startOperation = function(commadEvent) {
        if (this.curOp) {
            if (!commadEvent || this.curOp.command)
                return;
            this.prevOp = this.curOp;
        }
        if (!commadEvent) {
            this.previousCommand = null;
            commadEvent = {};
        }

        this.$opResetTimer.schedule();
        this.curOp = {
            command: commadEvent.command || {},
            args: commadEvent.args,
            scrollTop: this.renderer.scrollTop
        };
        if (this.curOp.command.name && this.curOp.command.scrollIntoView !== undefined)
            this.$blockScrolling++;
    };

    this.endOperation = function(e) {
        if (this.curOp) {
            if (e && e.returnValue === false)
                return this.curOp = null;
            this._signal("beforeEndOperation");
            var command = this.curOp.command;
            if (command.name && this.$blockScrolling > 0)
                this.$blockScrolling--;
            var scrollIntoView = command && command.scrollIntoView;
            if (scrollIntoView) {
                switch (scrollIntoView) {
                    case "center-animate":
                        scrollIntoView = "animate";
                    case "center":
                        this.renderer.scrollCursorIntoView(null, 0.5);
                        break;
                    case "animate":
                    case "cursor":
                        this.renderer.scrollCursorIntoView();
                        break;
                    case "selectionPart":
                        var range = this.selection.getRange();
                        var config = this.renderer.layerConfig;
                        if (range.start.row >= config.lastRow || range.end.row <= config.firstRow) {
                            this.renderer.scrollSelectionIntoView(this.selection.anchor, this.selection.lead);
                        }
                        break;
                    default:
                        break;
                }
                if (scrollIntoView == "animate")
                    this.renderer.animateScrolling(this.curOp.scrollTop);
            }
            
            this.prevOp = this.curOp;
            this.curOp = null;
        }
    };
    this.$mergeableCommands = ["backspace", "del", "insertstring"];
    this.$historyTracker = function(e) {
        if (!this.$mergeUndoDeltas)
            return;

        var prev = this.prevOp;
        var mergeableCommands = this.$mergeableCommands;
        var shouldMerge = prev.command && (e.command.name == prev.command.name);
        if (e.command.name == "insertstring") {
            var text = e.args;
            if (this.mergeNextCommand === undefined)
                this.mergeNextCommand = true;

            shouldMerge = shouldMerge
                && this.mergeNextCommand // previous command allows to coalesce with
                && (!/\s/.test(text) || /\s/.test(prev.args)); // previous insertion was of same type

            this.mergeNextCommand = true;
        } else {
            shouldMerge = shouldMerge
                && mergeableCommands.indexOf(e.command.name) !== -1; // the command is mergeable
        }

        if (
            this.$mergeUndoDeltas != "always"
            && Date.now() - this.sequenceStartTime > 2000
        ) {
            shouldMerge = false; // the sequence is too long
        }

        if (shouldMerge)
            this.session.mergeUndoDeltas = true;
        else if (mergeableCommands.indexOf(e.command.name) !== -1)
            this.sequenceStartTime = Date.now();
    };
    this.setKeyboardHandler = function(keyboardHandler, cb) {
        if (keyboardHandler && typeof keyboardHandler === "string") {
            this.$keybindingId = keyboardHandler;
            var _self = this;
            config.loadModule(["keybinding", keyboardHandler], function(module) {
                if (_self.$keybindingId == keyboardHandler)
                    _self.keyBinding.setKeyboardHandler(module && module.handler);
                cb && cb();
            });
        } else {
            this.$keybindingId = null;
            this.keyBinding.setKeyboardHandler(keyboardHandler);
            cb && cb();
        }
    };
    this.getKeyboardHandler = function() {
        return this.keyBinding.getKeyboardHandler();
    };
    this.setSession = function(session) {
        if (this.session == session)
            return;
        if (this.curOp) this.endOperation();
        this.curOp = {};

        var oldSession = this.session;
        if (oldSession) {
            this.session.off("change", this.$onDocumentChange);
            this.session.off("changeMode", this.$onChangeMode);
            this.session.off("tokenizerUpdate", this.$onTokenizerUpdate);
            this.session.off("changeTabSize", this.$onChangeTabSize);
            this.session.off("changeWrapLimit", this.$onChangeWrapLimit);
            this.session.off("changeWrapMode", this.$onChangeWrapMode);
            this.session.off("changeFold", this.$onChangeFold);
            this.session.off("changeFrontMarker", this.$onChangeFrontMarker);
            this.session.off("changeBackMarker", this.$onChangeBackMarker);
            this.session.off("changeBreakpoint", this.$onChangeBreakpoint);
            this.session.off("changeAnnotation", this.$onChangeAnnotation);
            this.session.off("changeOverwrite", this.$onCursorChange);
            this.session.off("changeScrollTop", this.$onScrollTopChange);
            this.session.off("changeScrollLeft", this.$onScrollLeftChange);

            var selection = this.session.getSelection();
            selection.off("changeCursor", this.$onCursorChange);
            selection.off("changeSelection", this.$onSelectionChange);
        }

        this.session = session;
        if (session) {
            this.$onDocumentChange = this.onDocumentChange.bind(this);
            session.on("change", this.$onDocumentChange);
            this.renderer.setSession(session);
    
            this.$onChangeMode = this.onChangeMode.bind(this);
            session.on("changeMode", this.$onChangeMode);
    
            this.$onTokenizerUpdate = this.onTokenizerUpdate.bind(this);
            session.on("tokenizerUpdate", this.$onTokenizerUpdate);
    
            this.$onChangeTabSize = this.renderer.onChangeTabSize.bind(this.renderer);
            session.on("changeTabSize", this.$onChangeTabSize);
    
            this.$onChangeWrapLimit = this.onChangeWrapLimit.bind(this);
            session.on("changeWrapLimit", this.$onChangeWrapLimit);
    
            this.$onChangeWrapMode = this.onChangeWrapMode.bind(this);
            session.on("changeWrapMode", this.$onChangeWrapMode);
    
            this.$onChangeFold = this.onChangeFold.bind(this);
            session.on("changeFold", this.$onChangeFold);
    
            this.$onChangeFrontMarker = this.onChangeFrontMarker.bind(this);
            this.session.on("changeFrontMarker", this.$onChangeFrontMarker);
    
            this.$onChangeBackMarker = this.onChangeBackMarker.bind(this);
            this.session.on("changeBackMarker", this.$onChangeBackMarker);
    
            this.$onChangeBreakpoint = this.onChangeBreakpoint.bind(this);
            this.session.on("changeBreakpoint", this.$onChangeBreakpoint);
    
            this.$onChangeAnnotation = this.onChangeAnnotation.bind(this);
            this.session.on("changeAnnotation", this.$onChangeAnnotation);
    
            this.$onCursorChange = this.onCursorChange.bind(this);
            this.session.on("changeOverwrite", this.$onCursorChange);
    
            this.$onScrollTopChange = this.onScrollTopChange.bind(this);
            this.session.on("changeScrollTop", this.$onScrollTopChange);
    
            this.$onScrollLeftChange = this.onScrollLeftChange.bind(this);
            this.session.on("changeScrollLeft", this.$onScrollLeftChange);
    
            this.selection = session.getSelection();
            this.selection.on("changeCursor", this.$onCursorChange);
    
            this.$onSelectionChange = this.onSelectionChange.bind(this);
            this.selection.on("changeSelection", this.$onSelectionChange);
    
            this.onChangeMode();
    
            this.$blockScrolling += 1;
            this.onCursorChange();
            this.$blockScrolling -= 1;
    
            this.onScrollTopChange();
            this.onScrollLeftChange();
            this.onSelectionChange();
            this.onChangeFrontMarker();
            this.onChangeBackMarker();
            this.onChangeBreakpoint();
            this.onChangeAnnotation();
            this.session.getUseWrapMode() && this.renderer.adjustWrapLimit();
            this.renderer.updateFull();
        } else {
            this.selection = null;
            this.renderer.setSession(session);
        }

        this._signal("changeSession", {
            session: session,
            oldSession: oldSession
        });
        
        this.curOp = null;
        
        oldSession && oldSession._signal("changeEditor", {oldEditor: this});
        session && session._signal("changeEditor", {editor: this});

        if (session && session.bgTokenizer)
            session.bgTokenizer.scheduleStart();
    };
    this.getSession = function() {
        return this.session;
    };
    this.setValue = function(val, cursorPos) {
        this.session.doc.setValue(val);

        if (!cursorPos)
            this.selectAll();
        else if (cursorPos == 1)
            this.navigateFileEnd();
        else if (cursorPos == -1)
            this.navigateFileStart();

        return val;
    };
    this.getValue = function() {
        return this.session.getValue();
    };
    this.getSelection = function() {
        return this.selection;
    };
    this.resize = function(force) {
        this.renderer.onResize(force);
    };
    this.setTheme = function(theme, cb) {
        this.renderer.setTheme(theme, cb);
    };
    this.getTheme = function() {
        return this.renderer.getTheme();
    };
    this.setStyle = function(style) {
        this.renderer.setStyle(style);
    };
    this.unsetStyle = function(style) {
        this.renderer.unsetStyle(style);
    };
    this.getFontSize = function () {
        return this.getOption("fontSize") ||
           dom.computedStyle(this.container, "fontSize");
    };
    this.setFontSize = function(size) {
        this.setOption("fontSize", size);
    };

    this.$highlightBrackets = function() {
        if (this.session.$bracketHighlight) {
            this.session.removeMarker(this.session.$bracketHighlight);
            this.session.$bracketHighlight = null;
        }

        if (this.$highlightPending) {
            return;
        }
        var self = this;
        this.$highlightPending = true;
        setTimeout(function() {
            self.$highlightPending = false;
            var session = self.session;
            if (!session || !session.bgTokenizer) return;
            var pos = session.findMatchingBracket(self.getCursorPosition());
            if (pos) {
                var range = new Range(pos.row, pos.column, pos.row, pos.column + 1);
            } else if (session.$mode.getMatching) {
                var range = session.$mode.getMatching(self.session);
            }
            if (range)
                session.$bracketHighlight = session.addMarker(range, "ace_bracket", "text");
        }, 50);
    };
    this.$highlightTags = function() {
        if (this.$highlightTagPending)
            return;
        var self = this;
        this.$highlightTagPending = true;
        setTimeout(function() {
            self.$highlightTagPending = false;
            
            var session = self.session;
            if (!session || !session.bgTokenizer) return;
            
            var pos = self.getCursorPosition();
            var iterator = new TokenIterator(self.session, pos.row, pos.column);
            var token = iterator.getCurrentToken();
            
            if (!token || !/\b(?:tag-open|tag-name)/.test(token.type)) {
                session.removeMarker(session.$tagHighlight);
                session.$tagHighlight = null;
                return;
            }
            
            if (token.type.indexOf("tag-open") != -1) {
                token = iterator.stepForward();
                if (!token)
                    return;
            }
            
            var tag = token.value;
            var depth = 0;
            var prevToken = iterator.stepBackward();
            
            if (prevToken.value == '<'){
                do {
                    prevToken = token;
                    token = iterator.stepForward();
                    
                    if (token && token.value === tag && token.type.indexOf('tag-name') !== -1) {
                        if (prevToken.value === '<'){
                            depth++;
                        } else if (prevToken.value === '</'){
                            depth--;
                        }
                    }
                    
                } while (token && depth >= 0);
            } else {
                do {
                    token = prevToken;
                    prevToken = iterator.stepBackward();
                    
                    if (token && token.value === tag && token.type.indexOf('tag-name') !== -1) {
                        if (prevToken.value === '<') {
                            depth++;
                        } else if (prevToken.value === '</') {
                            depth--;
                        }
                    }
                } while (prevToken && depth <= 0);
                iterator.stepForward();
            }
            
            if (!token) {
                session.removeMarker(session.$tagHighlight);
                session.$tagHighlight = null;
                return;
            }
            
            var row = iterator.getCurrentTokenRow();
            var column = iterator.getCurrentTokenColumn();
            var range = new Range(row, column, row, column+token.value.length);
            var sbm = session.$backMarkers[session.$tagHighlight];
            if (session.$tagHighlight && sbm != undefined && range.compareRange(sbm.range) !== 0) {
                session.removeMarker(session.$tagHighlight);
                session.$tagHighlight = null;
            }
            
            if (range && !session.$tagHighlight)
                session.$tagHighlight = session.addMarker(range, "ace_bracket", "text");
        }, 50);
    };
    this.focus = function() {
        var _self = this;
        setTimeout(function() {
            _self.textInput.focus();
        });
        this.textInput.focus();
    };
    this.isFocused = function() {
        return this.textInput.isFocused();
    };
    this.blur = function() {
        this.textInput.blur();
    };
    this.onFocus = function(e) {
        if (this.$isFocused)
            return;
        this.$isFocused = true;
        this.renderer.showCursor();
        this.renderer.visualizeFocus();
        this._emit("focus", e);
    };
    this.onBlur = function(e) {
        if (!this.$isFocused)
            return;
        this.$isFocused = false;
        this.renderer.hideCursor();
        this.renderer.visualizeBlur();
        this._emit("blur", e);
    };

    this.$cursorChange = function() {
        this.renderer.updateCursor();
    };
    this.onDocumentChange = function(delta) {
        var wrap = this.session.$useWrapMode;
        var lastRow = (delta.start.row == delta.end.row ? delta.end.row : Infinity);
        this.renderer.updateLines(delta.start.row, lastRow, wrap);

        this._signal("change", delta);
        this.$cursorChange();
        this.$updateHighlightActiveLine();
    };

    this.onTokenizerUpdate = function(e) {
        var rows = e.data;
        this.renderer.updateLines(rows.first, rows.last);
    };


    this.onScrollTopChange = function() {
        this.renderer.scrollToY(this.session.getScrollTop());
    };

    this.onScrollLeftChange = function() {
        this.renderer.scrollToX(this.session.getScrollLeft());
    };
    this.onCursorChange = function() {
        this.$cursorChange();

        if (!this.$blockScrolling) {
            config.warn("Automatically scrolling cursor into view after selection change",
                "this will be disabled in the next version",
                "set editor.$blockScrolling = Infinity to disable this message"
            );
            this.renderer.scrollCursorIntoView();
        }

        this.$highlightBrackets();
        this.$highlightTags();
        this.$updateHighlightActiveLine();
        this._signal("changeSelection");
    };

    this.$updateHighlightActiveLine = function() {
        var session = this.getSession();

        var highlight;
        if (this.$highlightActiveLine) {
            if ((this.$selectionStyle != "line" || !this.selection.isMultiLine()))
                highlight = this.getCursorPosition();
            if (this.renderer.$maxLines && this.session.getLength() === 1 && !(this.renderer.$minLines > 1))
                highlight = false;
        }

        if (session.$highlightLineMarker && !highlight) {
            session.removeMarker(session.$highlightLineMarker.id);
            session.$highlightLineMarker = null;
        } else if (!session.$highlightLineMarker && highlight) {
            var range = new Range(highlight.row, highlight.column, highlight.row, Infinity);
            range.id = session.addMarker(range, "ace_active-line", "screenLine");
            session.$highlightLineMarker = range;
        } else if (highlight) {
            session.$highlightLineMarker.start.row = highlight.row;
            session.$highlightLineMarker.end.row = highlight.row;
            session.$highlightLineMarker.start.column = highlight.column;
            session._signal("changeBackMarker");
        }
    };

    this.onSelectionChange = function(e) {
        var session = this.session;

        if (session.$selectionMarker) {
            session.removeMarker(session.$selectionMarker);
        }
        session.$selectionMarker = null;

        if (!this.selection.isEmpty()) {
            var range = this.selection.getRange();
            var style = this.getSelectionStyle();
            session.$selectionMarker = session.addMarker(range, "ace_selection", style);
        } else {
            this.$updateHighlightActiveLine();
        }

        var re = this.$highlightSelectedWord && this.$getSelectionHighLightRegexp();
        this.session.highlight(re);

        this._signal("changeSelection");
    };

    this.$getSelectionHighLightRegexp = function() {
        var session = this.session;

        var selection = this.getSelectionRange();
        if (selection.isEmpty() || selection.isMultiLine())
            return;

        var startOuter = selection.start.column - 1;
        var endOuter = selection.end.column + 1;
        var line = session.getLine(selection.start.row);
        var lineCols = line.length;
        var needle = line.substring(Math.max(startOuter, 0),
                                    Math.min(endOuter, lineCols));
        if ((startOuter >= 0 && /^[\w\d]/.test(needle)) ||
            (endOuter <= lineCols && /[\w\d]$/.test(needle)))
            return;

        needle = line.substring(selection.start.column, selection.end.column);
        if (!/^[\w\d]+$/.test(needle))
            return;

        var re = this.$search.$assembleRegExp({
            wholeWord: true,
            caseSensitive: true,
            needle: needle
        });

        return re;
    };


    this.onChangeFrontMarker = function() {
        this.renderer.updateFrontMarkers();
    };

    this.onChangeBackMarker = function() {
        this.renderer.updateBackMarkers();
    };


    this.onChangeBreakpoint = function() {
        this.renderer.updateBreakpoints();
    };

    this.onChangeAnnotation = function() {
        this.renderer.setAnnotations(this.session.getAnnotations());
    };


    this.onChangeMode = function(e) {
        this.renderer.updateText();
        this._emit("changeMode", e);
    };


    this.onChangeWrapLimit = function() {
        this.renderer.updateFull();
    };

    this.onChangeWrapMode = function() {
        this.renderer.onResize(true);
    };


    this.onChangeFold = function() {
        this.$updateHighlightActiveLine();
        this.renderer.updateFull();
    };
    this.getSelectedText = function() {
        return this.session.getTextRange(this.getSelectionRange());
    };
    this.getCopyText = function() {
        var text = this.getSelectedText();
        this._signal("copy", text);
        return text;
    };
    this.onCopy = function() {
        this.commands.exec("copy", this);
    };
    this.onCut = function() {
        this.commands.exec("cut", this);
    };
    this.onPaste = function(text, event) {
        var e = {text: text, event: event};
        this.commands.exec("paste", this, e);
    };
    
    this.$handlePaste = function(e) {
        if (typeof e == "string") 
            e = {text: e};
        this._signal("paste", e);
        var text = e.text;
        if (!this.inMultiSelectMode || this.inVirtualSelectionMode) {
            this.insert(text);
        } else {
            var lines = text.split(/\r\n|\r|\n/);
            var ranges = this.selection.rangeList.ranges;
    
            if (lines.length > ranges.length || lines.length < 2 || !lines[1])
                return this.commands.exec("insertstring", this, text);
    
            for (var i = ranges.length; i--;) {
                var range = ranges[i];
                if (!range.isEmpty())
                    this.session.remove(range);
    
                this.session.insert(range.start, lines[i]);
            }
        }
    };

    this.execCommand = function(command, args) {
        return this.commands.exec(command, this, args);
    };
    this.insert = function(text, pasted) {
        var session = this.session;
        var mode = session.getMode();
        var cursor = this.getCursorPosition();

        if (this.getBehavioursEnabled() && !pasted) {
            var transform = mode.transformAction(session.getState(cursor.row), 'insertion', this, session, text);
            if (transform) {
                if (text !== transform.text) {
                    this.session.mergeUndoDeltas = false;
                    this.$mergeNextCommand = false;
                }
                text = transform.text;

            }
        }
        
        if (text == "\t")
            text = this.session.getTabString();
        if (!this.selection.isEmpty()) {
            var range = this.getSelectionRange();
            cursor = this.session.remove(range);
            this.clearSelection();
        }
        else if (this.session.getOverwrite() && text.indexOf("\n") == -1) {
            var range = new Range.fromPoints(cursor, cursor);
            range.end.column += text.length;
            this.session.remove(range);
        }

        if (text == "\n" || text == "\r\n") {
            var line = session.getLine(cursor.row);
            if (cursor.column > line.search(/\S|$/)) {
                var d = line.substr(cursor.column).search(/\S|$/);
                session.doc.removeInLine(cursor.row, cursor.column, cursor.column + d);
            }
        }
        this.clearSelection();

        var start = cursor.column;
        var lineState = session.getState(cursor.row);
        var line = session.getLine(cursor.row);
        var shouldOutdent = mode.checkOutdent(lineState, line, text);
        var end = session.insert(cursor, text);

        if (transform && transform.selection) {
            if (transform.selection.length == 2) { // Transform relative to the current column
                this.selection.setSelectionRange(
                    new Range(cursor.row, start + transform.selection[0],
                              cursor.row, start + transform.selection[1]));
            } else { // Transform relative to the current row.
                this.selection.setSelectionRange(
                    new Range(cursor.row + transform.selection[0],
                              transform.selection[1],
                              cursor.row + transform.selection[2],
                              transform.selection[3]));
            }
        }

        if (session.getDocument().isNewLine(text)) {
            var lineIndent = mode.getNextLineIndent(lineState, line.slice(0, cursor.column), session.getTabString());

            session.insert({row: cursor.row+1, column: 0}, lineIndent);
        }
        if (shouldOutdent)
            mode.autoOutdent(lineState, session, cursor.row);
    };

    this.onTextInput = function(text) {
        this.keyBinding.onTextInput(text);
    };

    this.onCommandKey = function(e, hashId, keyCode) {
        this.keyBinding.onCommandKey(e, hashId, keyCode);
    };
    this.setOverwrite = function(overwrite) {
        this.session.setOverwrite(overwrite);
    };
    this.getOverwrite = function() {
        return this.session.getOverwrite();
    };
    this.toggleOverwrite = function() {
        this.session.toggleOverwrite();
    };
    this.setScrollSpeed = function(speed) {
        this.setOption("scrollSpeed", speed);
    };
    this.getScrollSpeed = function() {
        return this.getOption("scrollSpeed");
    };
    this.setDragDelay = function(dragDelay) {
        this.setOption("dragDelay", dragDelay);
    };
    this.getDragDelay = function() {
        return this.getOption("dragDelay");
    };
    this.setSelectionStyle = function(val) {
        this.setOption("selectionStyle", val);
    };
    this.getSelectionStyle = function() {
        return this.getOption("selectionStyle");
    };
    this.setHighlightActiveLine = function(shouldHighlight) {
        this.setOption("highlightActiveLine", shouldHighlight);
    };
    this.getHighlightActiveLine = function() {
        return this.getOption("highlightActiveLine");
    };
    this.setHighlightGutterLine = function(shouldHighlight) {
        this.setOption("highlightGutterLine", shouldHighlight);
    };

    this.getHighlightGutterLine = function() {
        return this.getOption("highlightGutterLine");
    };
    this.setHighlightSelectedWord = function(shouldHighlight) {
        this.setOption("highlightSelectedWord", shouldHighlight);
    };
    this.getHighlightSelectedWord = function() {
        return this.$highlightSelectedWord;
    };

    this.setAnimatedScroll = function(shouldAnimate){
        this.renderer.setAnimatedScroll(shouldAnimate);
    };

    this.getAnimatedScroll = function(){
        return this.renderer.getAnimatedScroll();
    };
    this.setShowInvisibles = function(showInvisibles) {
        this.renderer.setShowInvisibles(showInvisibles);
    };
    this.getShowInvisibles = function() {
        return this.renderer.getShowInvisibles();
    };

    this.setDisplayIndentGuides = function(display) {
        this.renderer.setDisplayIndentGuides(display);
    };

    this.getDisplayIndentGuides = function() {
        return this.renderer.getDisplayIndentGuides();
    };
    this.setShowPrintMargin = function(showPrintMargin) {
        this.renderer.setShowPrintMargin(showPrintMargin);
    };
    this.getShowPrintMargin = function() {
        return this.renderer.getShowPrintMargin();
    };
    this.setPrintMarginColumn = function(showPrintMargin) {
        this.renderer.setPrintMarginColumn(showPrintMargin);
    };
    this.getPrintMarginColumn = function() {
        return this.renderer.getPrintMarginColumn();
    };
    this.setReadOnly = function(readOnly) {
        this.setOption("readOnly", readOnly);
    };
    this.getReadOnly = function() {
        return this.getOption("readOnly");
    };
    this.setBehavioursEnabled = function (enabled) {
        this.setOption("behavioursEnabled", enabled);
    };
    this.getBehavioursEnabled = function () {
        return this.getOption("behavioursEnabled");
    };
    this.setWrapBehavioursEnabled = function (enabled) {
        this.setOption("wrapBehavioursEnabled", enabled);
    };
    this.getWrapBehavioursEnabled = function () {
        return this.getOption("wrapBehavioursEnabled");
    };
    this.setShowFoldWidgets = function(show) {
        this.setOption("showFoldWidgets", show);

    };
    this.getShowFoldWidgets = function() {
        return this.getOption("showFoldWidgets");
    };

    this.setFadeFoldWidgets = function(fade) {
        this.setOption("fadeFoldWidgets", fade);
    };

    this.getFadeFoldWidgets = function() {
        return this.getOption("fadeFoldWidgets");
    };
    this.remove = function(dir) {
        if (this.selection.isEmpty()){
            if (dir == "left")
                this.selection.selectLeft();
            else
                this.selection.selectRight();
        }

        var range = this.getSelectionRange();
        if (this.getBehavioursEnabled()) {
            var session = this.session;
            var state = session.getState(range.start.row);
            var new_range = session.getMode().transformAction(state, 'deletion', this, session, range);

            if (range.end.column === 0) {
                var text = session.getTextRange(range);
                if (text[text.length - 1] == "\n") {
                    var line = session.getLine(range.end.row);
                    if (/^\s+$/.test(line)) {
                        range.end.column = line.length;
                    }
                }
            }
            if (new_range)
                range = new_range;
        }

        this.session.remove(range);
        this.clearSelection();
    };
    this.removeWordRight = function() {
        if (this.selection.isEmpty())
            this.selection.selectWordRight();

        this.session.remove(this.getSelectionRange());
        this.clearSelection();
    };
    this.removeWordLeft = function() {
        if (this.selection.isEmpty())
            this.selection.selectWordLeft();

        this.session.remove(this.getSelectionRange());
        this.clearSelection();
    };
    this.removeToLineStart = function() {
        if (this.selection.isEmpty())
            this.selection.selectLineStart();

        this.session.remove(this.getSelectionRange());
        this.clearSelection();
    };
    this.removeToLineEnd = function() {
        if (this.selection.isEmpty())
            this.selection.selectLineEnd();

        var range = this.getSelectionRange();
        if (range.start.column == range.end.column && range.start.row == range.end.row) {
            range.end.column = 0;
            range.end.row++;
        }

        this.session.remove(range);
        this.clearSelection();
    };
    this.splitLine = function() {
        if (!this.selection.isEmpty()) {
            this.session.remove(this.getSelectionRange());
            this.clearSelection();
        }

        var cursor = this.getCursorPosition();
        this.insert("\n");
        this.moveCursorToPosition(cursor);
    };
    this.transposeLetters = function() {
        if (!this.selection.isEmpty()) {
            return;
        }

        var cursor = this.getCursorPosition();
        var column = cursor.column;
        if (column === 0)
            return;

        var line = this.session.getLine(cursor.row);
        var swap, range;
        if (column < line.length) {
            swap = line.charAt(column) + line.charAt(column-1);
            range = new Range(cursor.row, column-1, cursor.row, column+1);
        }
        else {
            swap = line.charAt(column-1) + line.charAt(column-2);
            range = new Range(cursor.row, column-2, cursor.row, column);
        }
        this.session.replace(range, swap);
        this.session.selection.moveToPosition(range.end);
    };
    this.toLowerCase = function() {
        var originalRange = this.getSelectionRange();
        if (this.selection.isEmpty()) {
            this.selection.selectWord();
        }

        var range = this.getSelectionRange();
        var text = this.session.getTextRange(range);
        this.session.replace(range, text.toLowerCase());
        this.selection.setSelectionRange(originalRange);
    };
    this.toUpperCase = function() {
        var originalRange = this.getSelectionRange();
        if (this.selection.isEmpty()) {
            this.selection.selectWord();
        }

        var range = this.getSelectionRange();
        var text = this.session.getTextRange(range);
        this.session.replace(range, text.toUpperCase());
        this.selection.setSelectionRange(originalRange);
    };
    this.indent = function() {
        var session = this.session;
        var range = this.getSelectionRange();

        if (range.start.row < range.end.row) {
            var rows = this.$getSelectedRows();
            session.indentRows(rows.first, rows.last, "\t");
            return;
        } else if (range.start.column < range.end.column) {
            var text = session.getTextRange(range);
            if (!/^\s+$/.test(text)) {
                var rows = this.$getSelectedRows();
                session.indentRows(rows.first, rows.last, "\t");
                return;
            }
        }
        
        var line = session.getLine(range.start.row);
        var position = range.start;
        var size = session.getTabSize();
        var column = session.documentToScreenColumn(position.row, position.column);

        if (this.session.getUseSoftTabs()) {
            var count = (size - column % size);
            var indentString = lang.stringRepeat(" ", count);
        } else {
            var count = column % size;
            while (line[range.start.column - 1] == " " && count) {
                range.start.column--;
                count--;
            }
            this.selection.setSelectionRange(range);
            indentString = "\t";
        }
        return this.insert(indentString);
    };
    this.blockIndent = function() {
        var rows = this.$getSelectedRows();
        this.session.indentRows(rows.first, rows.last, "\t");
    };
    this.blockOutdent = function() {
        var selection = this.session.getSelection();
        this.session.outdentRows(selection.getRange());
    };
    this.sortLines = function() {
        var rows = this.$getSelectedRows();
        var session = this.session;

        var lines = [];
        for (var i = rows.first; i <= rows.last; i++)
            lines.push(session.getLine(i));

        lines.sort(function(a, b) {
            if (a.toLowerCase() < b.toLowerCase()) return -1;
            if (a.toLowerCase() > b.toLowerCase()) return 1;
            return 0;
        });

        var deleteRange = new Range(0, 0, 0, 0);
        for (var i = rows.first; i <= rows.last; i++) {
            var line = session.getLine(i);
            deleteRange.start.row = i;
            deleteRange.end.row = i;
            deleteRange.end.column = line.length;
            session.replace(deleteRange, lines[i-rows.first]);
        }
    };
    this.toggleCommentLines = function() {
        var state = this.session.getState(this.getCursorPosition().row);
        var rows = this.$getSelectedRows();
        this.session.getMode().toggleCommentLines(state, this.session, rows.first, rows.last);
    };

    this.toggleBlockComment = function() {
        var cursor = this.getCursorPosition();
        var state = this.session.getState(cursor.row);
        var range = this.getSelectionRange();
        this.session.getMode().toggleBlockComment(state, this.session, range, cursor);
    };
    this.getNumberAt = function(row, column) {
        var _numberRx = /[\-]?[0-9]+(?:\.[0-9]+)?/g;
        _numberRx.lastIndex = 0;

        var s = this.session.getLine(row);
        while (_numberRx.lastIndex < column) {
            var m = _numberRx.exec(s);
            if(m.index <= column && m.index+m[0].length >= column){
                var number = {
                    value: m[0],
                    start: m.index,
                    end: m.index+m[0].length
                };
                return number;
            }
        }
        return null;
    };
    this.modifyNumber = function(amount) {
        var row = this.selection.getCursor().row;
        var column = this.selection.getCursor().column;
        var charRange = new Range(row, column-1, row, column);

        var c = this.session.getTextRange(charRange);
        if (!isNaN(parseFloat(c)) && isFinite(c)) {
            var nr = this.getNumberAt(row, column);
            if (nr) {
                var fp = nr.value.indexOf(".") >= 0 ? nr.start + nr.value.indexOf(".") + 1 : nr.end;
                var decimals = nr.start + nr.value.length - fp;

                var t = parseFloat(nr.value);
                t *= Math.pow(10, decimals);


                if(fp !== nr.end && column < fp){
                    amount *= Math.pow(10, nr.end - column - 1);
                } else {
                    amount *= Math.pow(10, nr.end - column);
                }

                t += amount;
                t /= Math.pow(10, decimals);
                var nnr = t.toFixed(decimals);
                var replaceRange = new Range(row, nr.start, row, nr.end);
                this.session.replace(replaceRange, nnr);
                this.moveCursorTo(row, Math.max(nr.start +1, column + nnr.length - nr.value.length));

            }
        }
    };
    this.removeLines = function() {
        var rows = this.$getSelectedRows();
        this.session.removeFullLines(rows.first, rows.last);
        this.clearSelection();
    };

    this.duplicateSelection = function() {
        var sel = this.selection;
        var doc = this.session;
        var range = sel.getRange();
        var reverse = sel.isBackwards();
        if (range.isEmpty()) {
            var row = range.start.row;
            doc.duplicateLines(row, row);
        } else {
            var point = reverse ? range.start : range.end;
            var endPoint = doc.insert(point, doc.getTextRange(range), false);
            range.start = point;
            range.end = endPoint;

            sel.setSelectionRange(range, reverse);
        }
    };
    this.moveLinesDown = function() {
        this.$moveLines(1, false);
    };
    this.moveLinesUp = function() {
        this.$moveLines(-1, false);
    };
    this.moveText = function(range, toPosition, copy) {
        return this.session.moveText(range, toPosition, copy);
    };
    this.copyLinesUp = function() {
        this.$moveLines(-1, true);
    };
    this.copyLinesDown = function() {
        this.$moveLines(1, true);
    };
    this.$moveLines = function(dir, copy) {
        var rows, moved;
        var selection = this.selection;
        if (!selection.inMultiSelectMode || this.inVirtualSelectionMode) {
            var range = selection.toOrientedRange();
            rows = this.$getSelectedRows(range);
            moved = this.session.$moveLines(rows.first, rows.last, copy ? 0 : dir);
            if (copy && dir == -1) moved = 0;
            range.moveBy(moved, 0);
            selection.fromOrientedRange(range);
        } else {
            var ranges = selection.rangeList.ranges;
            selection.rangeList.detach(this.session);
            this.inVirtualSelectionMode = true;
            
            var diff = 0;
            var totalDiff = 0;
            var l = ranges.length;
            for (var i = 0; i < l; i++) {
                var rangeIndex = i;
                ranges[i].moveBy(diff, 0);
                rows = this.$getSelectedRows(ranges[i]);
                var first = rows.first;
                var last = rows.last;
                while (++i < l) {
                    if (totalDiff) ranges[i].moveBy(totalDiff, 0);
                    var subRows = this.$getSelectedRows(ranges[i]);
                    if (copy && subRows.first != last)
                        break;
                    else if (!copy && subRows.first > last + 1)
                        break;
                    last = subRows.last;
                }
                i--;
                diff = this.session.$moveLines(first, last, copy ? 0 : dir);
                if (copy && dir == -1) rangeIndex = i + 1;
                while (rangeIndex <= i) {
                    ranges[rangeIndex].moveBy(diff, 0);
                    rangeIndex++;
                }
                if (!copy) diff = 0;
                totalDiff += diff;
            }
            
            selection.fromOrientedRange(selection.ranges[0]);
            selection.rangeList.attach(this.session);
            this.inVirtualSelectionMode = false;
        }
    };
    this.$getSelectedRows = function(range) {
        range = (range || this.getSelectionRange()).collapseRows();

        return {
            first: this.session.getRowFoldStart(range.start.row),
            last: this.session.getRowFoldEnd(range.end.row)
        };
    };

    this.onCompositionStart = function(text) {
        this.renderer.showComposition(this.getCursorPosition());
    };

    this.onCompositionUpdate = function(text) {
        this.renderer.setCompositionText(text);
    };

    this.onCompositionEnd = function() {
        this.renderer.hideComposition();
    };
    this.getFirstVisibleRow = function() {
        return this.renderer.getFirstVisibleRow();
    };
    this.getLastVisibleRow = function() {
        return this.renderer.getLastVisibleRow();
    };
    this.isRowVisible = function(row) {
        return (row >= this.getFirstVisibleRow() && row <= this.getLastVisibleRow());
    };
    this.isRowFullyVisible = function(row) {
        return (row >= this.renderer.getFirstFullyVisibleRow() && row <= this.renderer.getLastFullyVisibleRow());
    };
    this.$getVisibleRowCount = function() {
        return this.renderer.getScrollBottomRow() - this.renderer.getScrollTopRow() + 1;
    };

    this.$moveByPage = function(dir, select) {
        var renderer = this.renderer;
        var config = this.renderer.layerConfig;
        var rows = dir * Math.floor(config.height / config.lineHeight);

        this.$blockScrolling++;
        if (select === true) {
            this.selection.$moveSelection(function(){
                this.moveCursorBy(rows, 0);
            });
        } else if (select === false) {
            this.selection.moveCursorBy(rows, 0);
            this.selection.clearSelection();
        }
        this.$blockScrolling--;

        var scrollTop = renderer.scrollTop;

        renderer.scrollBy(0, rows * config.lineHeight);
        if (select != null)
            renderer.scrollCursorIntoView(null, 0.5);

        renderer.animateScrolling(scrollTop);
    };
    this.selectPageDown = function() {
        this.$moveByPage(1, true);
    };
    this.selectPageUp = function() {
        this.$moveByPage(-1, true);
    };
    this.gotoPageDown = function() {
       this.$moveByPage(1, false);
    };
    this.gotoPageUp = function() {
        this.$moveByPage(-1, false);
    };
    this.scrollPageDown = function() {
        this.$moveByPage(1);
    };
    this.scrollPageUp = function() {
        this.$moveByPage(-1);
    };
    this.scrollToRow = function(row) {
        this.renderer.scrollToRow(row);
    };
    this.scrollToLine = function(line, center, animate, callback) {
        this.renderer.scrollToLine(line, center, animate, callback);
    };
    this.centerSelection = function() {
        var range = this.getSelectionRange();
        var pos = {
            row: Math.floor(range.start.row + (range.end.row - range.start.row) / 2),
            column: Math.floor(range.start.column + (range.end.column - range.start.column) / 2)
        };
        this.renderer.alignCursor(pos, 0.5);
    };
    this.getCursorPosition = function() {
        return this.selection.getCursor();
    };
    this.getCursorPositionScreen = function() {
        return this.session.documentToScreenPosition(this.getCursorPosition());
    };
    this.getSelectionRange = function() {
        return this.selection.getRange();
    };
    this.selectAll = function() {
        this.$blockScrolling += 1;
        this.selection.selectAll();
        this.$blockScrolling -= 1;
    };
    this.clearSelection = function() {
        this.selection.clearSelection();
    };
    this.moveCursorTo = function(row, column) {
        this.selection.moveCursorTo(row, column);
    };
    this.moveCursorToPosition = function(pos) {
        this.selection.moveCursorToPosition(pos);
    };
    this.jumpToMatching = function(select, expand) {
        var cursor = this.getCursorPosition();
        var iterator = new TokenIterator(this.session, cursor.row, cursor.column);
        var prevToken = iterator.getCurrentToken();
        var token = prevToken || iterator.stepForward();

        if (!token) return;
        var matchType;
        var found = false;
        var depth = {};
        var i = cursor.column - token.start;
        var bracketType;
        var brackets = {
            ")": "(",
            "(": "(",
            "]": "[",
            "[": "[",
            "{": "{",
            "}": "{"
        };
        
        do {
            if (token.value.match(/[{}()\[\]]/g)) {
                for (; i < token.value.length && !found; i++) {
                    if (!brackets[token.value[i]]) {
                        continue;
                    }

                    bracketType = brackets[token.value[i]] + '.' + token.type.replace("rparen", "lparen");

                    if (isNaN(depth[bracketType])) {
                        depth[bracketType] = 0;
                    }

                    switch (token.value[i]) {
                        case '(':
                        case '[':
                        case '{':
                            depth[bracketType]++;
                            break;
                        case ')':
                        case ']':
                        case '}':
                            depth[bracketType]--;

                            if (depth[bracketType] === -1) {
                                matchType = 'bracket';
                                found = true;
                            }
                        break;
                    }
                }
            }
            else if (token && token.type.indexOf('tag-name') !== -1) {
                if (isNaN(depth[token.value])) {
                    depth[token.value] = 0;
                }
                
                if (prevToken.value === '<') {
                    depth[token.value]++;
                }
                else if (prevToken.value === '</') {
                    depth[token.value]--;
                }
                
                if (depth[token.value] === -1) {
                    matchType = 'tag';
                    found = true;
                }
            }

            if (!found) {
                prevToken = token;
                token = iterator.stepForward();
                i = 0;
            }
        } while (token && !found);
        if (!matchType)
            return;

        var range, pos;
        if (matchType === 'bracket') {
            range = this.session.getBracketRange(cursor);
            if (!range) {
                range = new Range(
                    iterator.getCurrentTokenRow(),
                    iterator.getCurrentTokenColumn() + i - 1,
                    iterator.getCurrentTokenRow(),
                    iterator.getCurrentTokenColumn() + i - 1
                );
                pos = range.start;
                if (expand || pos.row === cursor.row && Math.abs(pos.column - cursor.column) < 2)
                    range = this.session.getBracketRange(pos);
            }
        }
        else if (matchType === 'tag') {
            if (token && token.type.indexOf('tag-name') !== -1) 
                var tag = token.value;
            else
                return;

            range = new Range(
                iterator.getCurrentTokenRow(),
                iterator.getCurrentTokenColumn() - 2,
                iterator.getCurrentTokenRow(),
                iterator.getCurrentTokenColumn() - 2
            );
            if (range.compare(cursor.row, cursor.column) === 0) {
                found = false;
                do {
                    token = prevToken;
                    prevToken = iterator.stepBackward();
                    
                    if (prevToken) {
                        if (prevToken.type.indexOf('tag-close') !== -1) {
                            range.setEnd(iterator.getCurrentTokenRow(), iterator.getCurrentTokenColumn() + 1);
                        }

                        if (token.value === tag && token.type.indexOf('tag-name') !== -1) {
                            if (prevToken.value === '<') {
                                depth[tag]++;
                            }
                            else if (prevToken.value === '</') {
                                depth[tag]--;
                            }
                            
                            if (depth[tag] === 0)
                                found = true;
                        }
                    }
                } while (prevToken && !found);
            }
            if (token && token.type.indexOf('tag-name')) {
                pos = range.start;
                if (pos.row == cursor.row && Math.abs(pos.column - cursor.column) < 2)
                    pos = range.end;
            }
        }

        pos = range && range.cursor || pos;
        if (pos) {
            if (select) {
                if (range && expand) {
                    this.selection.setRange(range);
                } else if (range && range.isEqual(this.getSelectionRange())) {
                    this.clearSelection();
                } else {
                    this.selection.selectTo(pos.row, pos.column);
                }
            } else {
                this.selection.moveTo(pos.row, pos.column);
            }
        }
    };
    this.gotoLine = function(lineNumber, column, animate) {
        this.selection.clearSelection();
        this.session.unfold({row: lineNumber - 1, column: column || 0});

        this.$blockScrolling += 1;
        this.exitMultiSelectMode && this.exitMultiSelectMode();
        this.moveCursorTo(lineNumber - 1, column || 0);
        this.$blockScrolling -= 1;

        if (!this.isRowFullyVisible(lineNumber - 1))
            this.scrollToLine(lineNumber - 1, true, animate);
    };
    this.navigateTo = function(row, column) {
        this.selection.moveTo(row, column);
    };
    this.navigateUp = function(times) {
        if (this.selection.isMultiLine() && !this.selection.isBackwards()) {
            var selectionStart = this.selection.anchor.getPosition();
            return this.moveCursorToPosition(selectionStart);
        }
        this.selection.clearSelection();
        this.selection.moveCursorBy(-times || -1, 0);
    };
    this.navigateDown = function(times) {
        if (this.selection.isMultiLine() && this.selection.isBackwards()) {
            var selectionEnd = this.selection.anchor.getPosition();
            return this.moveCursorToPosition(selectionEnd);
        }
        this.selection.clearSelection();
        this.selection.moveCursorBy(times || 1, 0);
    };
    this.navigateLeft = function(times) {
        if (!this.selection.isEmpty()) {
            var selectionStart = this.getSelectionRange().start;
            this.moveCursorToPosition(selectionStart);
        }
        else {
            times = times || 1;
            while (times--) {
                this.selection.moveCursorLeft();
            }
        }
        this.clearSelection();
    };
    this.navigateRight = function(times) {
        if (!this.selection.isEmpty()) {
            var selectionEnd = this.getSelectionRange().end;
            this.moveCursorToPosition(selectionEnd);
        }
        else {
            times = times || 1;
            while (times--) {
                this.selection.moveCursorRight();
            }
        }
        this.clearSelection();
    };
    this.navigateLineStart = function() {
        this.selection.moveCursorLineStart();
        this.clearSelection();
    };
    this.navigateLineEnd = function() {
        this.selection.moveCursorLineEnd();
        this.clearSelection();
    };
    this.navigateFileEnd = function() {
        this.selection.moveCursorFileEnd();
        this.clearSelection();
    };
    this.navigateFileStart = function() {
        this.selection.moveCursorFileStart();
        this.clearSelection();
    };
    this.navigateWordRight = function() {
        this.selection.moveCursorWordRight();
        this.clearSelection();
    };
    this.navigateWordLeft = function() {
        this.selection.moveCursorWordLeft();
        this.clearSelection();
    };
    this.replace = function(replacement, options) {
        if (options)
            this.$search.set(options);

        var range = this.$search.find(this.session);
        var replaced = 0;
        if (!range)
            return replaced;

        if (this.$tryReplace(range, replacement)) {
            replaced = 1;
        }
        if (range !== null) {
            this.selection.setSelectionRange(range);
            this.renderer.scrollSelectionIntoView(range.start, range.end);
        }

        return replaced;
    };
    this.replaceAll = function(replacement, options) {
        if (options) {
            this.$search.set(options);
        }

        var ranges = this.$search.findAll(this.session);
        var replaced = 0;
        if (!ranges.length)
            return replaced;

        this.$blockScrolling += 1;

        var selection = this.getSelectionRange();
        this.selection.moveTo(0, 0);

        for (var i = ranges.length - 1; i >= 0; --i) {
            if(this.$tryReplace(ranges[i], replacement)) {
                replaced++;
            }
        }

        this.selection.setSelectionRange(selection);
        this.$blockScrolling -= 1;

        return replaced;
    };

    this.$tryReplace = function(range, replacement) {
        var input = this.session.getTextRange(range);
        replacement = this.$search.replace(input, replacement);
        if (replacement !== null) {
            range.end = this.session.replace(range, replacement);
            return range;
        } else {
            return null;
        }
    };
    this.getLastSearchOptions = function() {
        return this.$search.getOptions();
    };
    this.find = function(needle, options, animate) {
        if (!options)
            options = {};

        if (typeof needle == "string" || needle instanceof RegExp)
            options.needle = needle;
        else if (typeof needle == "object")
            oop.mixin(options, needle);

        var range = this.selection.getRange();
        if (options.needle == null) {
            needle = this.session.getTextRange(range)
                || this.$search.$options.needle;
            if (!needle) {
                range = this.session.getWordRange(range.start.row, range.start.column);
                needle = this.session.getTextRange(range);
            }
            this.$search.set({needle: needle});
        }

        this.$search.set(options);
        if (!options.start)
            this.$search.set({start: range});

        var newRange = this.$search.find(this.session);
        if (options.preventScroll)
            return newRange;
        if (newRange) {
            this.revealRange(newRange, animate);
            return newRange;
        }
        if (options.backwards)
            range.start = range.end;
        else
            range.end = range.start;
        this.selection.setRange(range);
    };
    this.findNext = function(options, animate) {
        this.find({skipCurrent: true, backwards: false}, options, animate);
    };
    this.findPrevious = function(options, animate) {
        this.find(options, {skipCurrent: true, backwards: true}, animate);
    };

    this.revealRange = function(range, animate) {
        this.$blockScrolling += 1;
        this.session.unfold(range);
        this.selection.setSelectionRange(range);
        this.$blockScrolling -= 1;

        var scrollTop = this.renderer.scrollTop;
        this.renderer.scrollSelectionIntoView(range.start, range.end, 0.5);
        if (animate !== false)
            this.renderer.animateScrolling(scrollTop);
    };
    this.undo = function() {
        this.$blockScrolling++;
        this.session.getUndoManager().undo();
        this.$blockScrolling--;
        this.renderer.scrollCursorIntoView(null, 0.5);
    };
    this.redo = function() {
        this.$blockScrolling++;
        this.session.getUndoManager().redo();
        this.$blockScrolling--;
        this.renderer.scrollCursorIntoView(null, 0.5);
    };
    this.destroy = function() {
        this.renderer.destroy();
        this._signal("destroy", this);
        if (this.session) {
            this.session.destroy();
        }
    };
    this.setAutoScrollEditorIntoView = function(enable) {
        if (!enable)
            return;
        var rect;
        var self = this;
        var shouldScroll = false;
        if (!this.$scrollAnchor)
            this.$scrollAnchor = document.createElement("div");
        var scrollAnchor = this.$scrollAnchor;
        scrollAnchor.style.cssText = "position:absolute";
        this.container.insertBefore(scrollAnchor, this.container.firstChild);
        var onChangeSelection = this.on("changeSelection", function() {
            shouldScroll = true;
        });
        var onBeforeRender = this.renderer.on("beforeRender", function() {
            if (shouldScroll)
                rect = self.renderer.container.getBoundingClientRect();
        });
        var onAfterRender = this.renderer.on("afterRender", function() {
            if (shouldScroll && rect && (self.isFocused()
                || self.searchBox && self.searchBox.isFocused())
            ) {
                var renderer = self.renderer;
                var pos = renderer.$cursorLayer.$pixelPos;
                var config = renderer.layerConfig;
                var top = pos.top - config.offset;
                if (pos.top >= 0 && top + rect.top < 0) {
                    shouldScroll = true;
                } else if (pos.top < config.height &&
                    pos.top + rect.top + config.lineHeight > window.innerHeight) {
                    shouldScroll = false;
                } else {
                    shouldScroll = null;
                }
                if (shouldScroll != null) {
                    scrollAnchor.style.top = top + "px";
                    scrollAnchor.style.left = pos.left + "px";
                    scrollAnchor.style.height = config.lineHeight + "px";
                    scrollAnchor.scrollIntoView(shouldScroll);
                }
                shouldScroll = rect = null;
            }
        });
        this.setAutoScrollEditorIntoView = function(enable) {
            if (enable)
                return;
            delete this.setAutoScrollEditorIntoView;
            this.off("changeSelection", onChangeSelection);
            this.renderer.off("afterRender", onAfterRender);
            this.renderer.off("beforeRender", onBeforeRender);
        };
    };


    this.$resetCursorStyle = function() {
        var style = this.$cursorStyle || "ace";
        var cursorLayer = this.renderer.$cursorLayer;
        if (!cursorLayer)
            return;
        cursorLayer.setSmoothBlinking(/smooth/.test(style));
        cursorLayer.isBlinking = !this.$readOnly && style != "wide";
        dom.setCssClass(cursorLayer.element, "ace_slim-cursors", /slim/.test(style));
    };

}).call(Editor.prototype);



config.defineOptions(Editor.prototype, "editor", {
    selectionStyle: {
        set: function(style) {
            this.onSelectionChange();
            this._signal("changeSelectionStyle", {data: style});
        },
        initialValue: "line"
    },
    highlightActiveLine: {
        set: function() {this.$updateHighlightActiveLine();},
        initialValue: true
    },
    highlightSelectedWord: {
        set: function(shouldHighlight) {this.$onSelectionChange();},
        initialValue: true
    },
    readOnly: {
        set: function(readOnly) {
            this.$resetCursorStyle(); 
        },
        initialValue: false
    },
    cursorStyle: {
        set: function(val) { this.$resetCursorStyle(); },
        values: ["ace", "slim", "smooth", "wide"],
        initialValue: "ace"
    },
    mergeUndoDeltas: {
        values: [false, true, "always"],
        initialValue: true
    },
    behavioursEnabled: {initialValue: true},
    wrapBehavioursEnabled: {initialValue: true},
    autoScrollEditorIntoView: {
        set: function(val) {this.setAutoScrollEditorIntoView(val);}
    },
    keyboardHandler: {
        set: function(val) { this.setKeyboardHandler(val); },
        get: function() { return this.keybindingId; },
        handlesSet: true
    },

    hScrollBarAlwaysVisible: "renderer",
    vScrollBarAlwaysVisible: "renderer",
    highlightGutterLine: "renderer",
    animatedScroll: "renderer",
    showInvisibles: "renderer",
    showPrintMargin: "renderer",
    printMarginColumn: "renderer",
    printMargin: "renderer",
    fadeFoldWidgets: "renderer",
    showFoldWidgets: "renderer",
    showLineNumbers: "renderer",
    showGutter: "renderer",
    displayIndentGuides: "renderer",
    fontSize: "renderer",
    fontFamily: "renderer",
    maxLines: "renderer",
    minLines: "renderer",
    scrollPastEnd: "renderer",
    fixedWidthGutter: "renderer",
    theme: "renderer",

    scrollSpeed: "$mouseHandler",
    dragDelay: "$mouseHandler",
    dragEnabled: "$mouseHandler",
    focusTimout: "$mouseHandler",
    tooltipFollowsMouse: "$mouseHandler",

    firstLineNumber: "session",
    overwrite: "session",
    newLineMode: "session",
    useWorker: "session",
    useSoftTabs: "session",
    tabSize: "session",
    wrap: "session",
    indentedSoftWrap: "session",
    foldStyle: "session",
    mode: "session"
});

exports.Editor = Editor;
});

ace.define("ace/undomanager",["require","exports","module"], function(acequire, exports, module) {
"use strict";
var UndoManager = function() {
    this.reset();
};

(function() {
    this.execute = function(options) {
        var deltaSets = options.args[0];
        this.$doc  = options.args[1];
        if (options.merge && this.hasUndo()){
            this.dirtyCounter--;
            deltaSets = this.$undoStack.pop().concat(deltaSets);
        }
        this.$undoStack.push(deltaSets);
        this.$redoStack = [];
        if (this.dirtyCounter < 0) {
            this.dirtyCounter = NaN;
        }
        this.dirtyCounter++;
    };
    this.undo = function(dontSelect) {
        var deltaSets = this.$undoStack.pop();
        var undoSelectionRange = null;
        if (deltaSets) {
            undoSelectionRange = this.$doc.undoChanges(deltaSets, dontSelect);
            this.$redoStack.push(deltaSets);
            this.dirtyCounter--;
        }

        return undoSelectionRange;
    };
    this.redo = function(dontSelect) {
        var deltaSets = this.$redoStack.pop();
        var redoSelectionRange = null;
        if (deltaSets) {
            redoSelectionRange =
                this.$doc.redoChanges(this.$deserializeDeltas(deltaSets), dontSelect);
            this.$undoStack.push(deltaSets);
            this.dirtyCounter++;
        }
        return redoSelectionRange;
    };
    this.reset = function() {
        this.$undoStack = [];
        this.$redoStack = [];
        this.dirtyCounter = 0;
    };
    this.hasUndo = function() {
        return this.$undoStack.length > 0;
    };
    this.hasRedo = function() {
        return this.$redoStack.length > 0;
    };
    this.markClean = function() {
        this.dirtyCounter = 0;
    };
    this.isClean = function() {
        return this.dirtyCounter === 0;
    };
    this.$serializeDeltas = function(deltaSets) {
        return cloneDeltaSetsObj(deltaSets, $serializeDelta);
    };
    this.$deserializeDeltas = function(deltaSets) {
        return cloneDeltaSetsObj(deltaSets, $deserializeDelta);
    };
    
    function $serializeDelta(delta){
        return {
            action: delta.action,
            start: delta.start,
            end: delta.end,
            lines: delta.lines.length == 1 ? null : delta.lines,
            text: delta.lines.length == 1 ? delta.lines[0] : null
        };
    }
        
    function $deserializeDelta(delta) {
        return {
            action: delta.action,
            start: delta.start,
            end: delta.end,
            lines: delta.lines || [delta.text]
        };
    }
    
    function cloneDeltaSetsObj(deltaSets_old, fnGetModifiedDelta) {
        var deltaSets_new = new Array(deltaSets_old.length);
        for (var i = 0; i < deltaSets_old.length; i++) {
            var deltaSet_old = deltaSets_old[i];
            var deltaSet_new = { group: deltaSet_old.group, deltas: new Array(deltaSet_old.length)};
            
            for (var j = 0; j < deltaSet_old.deltas.length; j++) {
                var delta_old = deltaSet_old.deltas[j];
                deltaSet_new.deltas[j] = fnGetModifiedDelta(delta_old);
            }
            
            deltaSets_new[i] = deltaSet_new;
        }
        return deltaSets_new;
    }
    
}).call(UndoManager.prototype);

exports.UndoManager = UndoManager;
});

ace.define("ace/layer/gutter",["require","exports","module","ace/lib/dom","ace/lib/oop","ace/lib/lang","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var dom = acequire("../lib/dom");
var oop = acequire("../lib/oop");
var lang = acequire("../lib/lang");
var EventEmitter = acequire("../lib/event_emitter").EventEmitter;

var Gutter = function(parentEl) {
    this.element = dom.createElement("div");
    this.element.className = "ace_layer ace_gutter-layer";
    parentEl.appendChild(this.element);
    this.setShowFoldWidgets(this.$showFoldWidgets);
    
    this.gutterWidth = 0;

    this.$annotations = [];
    this.$updateAnnotations = this.$updateAnnotations.bind(this);

    this.$cells = [];
};

(function() {

    oop.implement(this, EventEmitter);

    this.setSession = function(session) {
        if (this.session)
            this.session.removeEventListener("change", this.$updateAnnotations);
        this.session = session;
        if (session)
            session.on("change", this.$updateAnnotations);
    };

    this.addGutterDecoration = function(row, className){
        if (window.console)
            console.warn && console.warn("deprecated use session.addGutterDecoration");
        this.session.addGutterDecoration(row, className);
    };

    this.removeGutterDecoration = function(row, className){
        if (window.console)
            console.warn && console.warn("deprecated use session.removeGutterDecoration");
        this.session.removeGutterDecoration(row, className);
    };

    this.setAnnotations = function(annotations) {
        this.$annotations = [];
        for (var i = 0; i < annotations.length; i++) {
            var annotation = annotations[i];
            var row = annotation.row;
            var rowInfo = this.$annotations[row];
            if (!rowInfo)
                rowInfo = this.$annotations[row] = {text: []};
           
            var annoText = annotation.text;
            annoText = annoText ? lang.escapeHTML(annoText) : annotation.html || "";

            if (rowInfo.text.indexOf(annoText) === -1)
                rowInfo.text.push(annoText);

            var type = annotation.type;
            if (type == "error")
                rowInfo.className = " ace_error";
            else if (type == "warning" && rowInfo.className != " ace_error")
                rowInfo.className = " ace_warning";
            else if (type == "info" && (!rowInfo.className))
                rowInfo.className = " ace_info";
        }
    };

    this.$updateAnnotations = function (delta) {
        if (!this.$annotations.length)
            return;
        var firstRow = delta.start.row;
        var len = delta.end.row - firstRow;
        if (len === 0) {
        } else if (delta.action == 'remove') {
            this.$annotations.splice(firstRow, len + 1, null);
        } else {
            var args = new Array(len + 1);
            args.unshift(firstRow, 1);
            this.$annotations.splice.apply(this.$annotations, args);
        }
    };

    this.update = function(config) {
        var session = this.session;
        var firstRow = config.firstRow;
        var lastRow = Math.min(config.lastRow + config.gutterOffset,  // needed to compensate for hor scollbar
            session.getLength() - 1);
        var fold = session.getNextFoldLine(firstRow);
        var foldStart = fold ? fold.start.row : Infinity;
        var foldWidgets = this.$showFoldWidgets && session.foldWidgets;
        var breakpoints = session.$breakpoints;
        var decorations = session.$decorations;
        var firstLineNumber = session.$firstLineNumber;
        var lastLineNumber = 0;
        
        var gutterRenderer = session.gutterRenderer || this.$renderer;

        var cell = null;
        var index = -1;
        var row = firstRow;
        while (true) {
            if (row > foldStart) {
                row = fold.end.row + 1;
                fold = session.getNextFoldLine(row, fold);
                foldStart = fold ? fold.start.row : Infinity;
            }
            if (row > lastRow) {
                while (this.$cells.length > index + 1) {
                    cell = this.$cells.pop();
                    this.element.removeChild(cell.element);
                }
                break;
            }

            cell = this.$cells[++index];
            if (!cell) {
                cell = {element: null, textNode: null, foldWidget: null};
                cell.element = dom.createElement("div");
                cell.textNode = document.createTextNode('');
                cell.element.appendChild(cell.textNode);
                this.element.appendChild(cell.element);
                this.$cells[index] = cell;
            }

            var className = "ace_gutter-cell ";
            if (breakpoints[row])
                className += breakpoints[row];
            if (decorations[row])
                className += decorations[row];
            if (this.$annotations[row])
                className += this.$annotations[row].className;
            if (cell.element.className != className)
                cell.element.className = className;

            var height = session.getRowLength(row) * config.lineHeight + "px";
            if (height != cell.element.style.height)
                cell.element.style.height = height;

            if (foldWidgets) {
                var c = foldWidgets[row];
                if (c == null)
                    c = foldWidgets[row] = session.getFoldWidget(row);
            }

            if (c) {
                if (!cell.foldWidget) {
                    cell.foldWidget = dom.createElement("span");
                    cell.element.appendChild(cell.foldWidget);
                }
                var className = "ace_fold-widget ace_" + c;
                if (c == "start" && row == foldStart && row < fold.end.row)
                    className += " ace_closed";
                else
                    className += " ace_open";
                if (cell.foldWidget.className != className)
                    cell.foldWidget.className = className;

                var height = config.lineHeight + "px";
                if (cell.foldWidget.style.height != height)
                    cell.foldWidget.style.height = height;
            } else {
                if (cell.foldWidget) {
                    cell.element.removeChild(cell.foldWidget);
                    cell.foldWidget = null;
                }
            }
            
            var text = lastLineNumber = gutterRenderer
                ? gutterRenderer.getText(session, row)
                : row + firstLineNumber;
            if (text !== cell.textNode.data)
                cell.textNode.data = text;

            row++;
        }

        this.element.style.height = config.minHeight + "px";

        if (this.$fixedWidth || session.$useWrapMode)
            lastLineNumber = session.getLength() + firstLineNumber;

        var gutterWidth = gutterRenderer 
            ? gutterRenderer.getWidth(session, lastLineNumber, config)
            : lastLineNumber.toString().length * config.characterWidth;
        
        var padding = this.$padding || this.$computePadding();
        gutterWidth += padding.left + padding.right;
        if (gutterWidth !== this.gutterWidth && !isNaN(gutterWidth)) {
            this.gutterWidth = gutterWidth;
            this.element.style.width = Math.ceil(this.gutterWidth) + "px";
            this._emit("changeGutterWidth", gutterWidth);
        }
    };

    this.$fixedWidth = false;
    
    this.$showLineNumbers = true;
    this.$renderer = "";
    this.setShowLineNumbers = function(show) {
        this.$renderer = !show && {
            getWidth: function() {return "";},
            getText: function() {return "";}
        };
    };
    
    this.getShowLineNumbers = function() {
        return this.$showLineNumbers;
    };
    
    this.$showFoldWidgets = true;
    this.setShowFoldWidgets = function(show) {
        if (show)
            dom.addCssClass(this.element, "ace_folding-enabled");
        else
            dom.removeCssClass(this.element, "ace_folding-enabled");

        this.$showFoldWidgets = show;
        this.$padding = null;
    };
    
    this.getShowFoldWidgets = function() {
        return this.$showFoldWidgets;
    };

    this.$computePadding = function() {
        if (!this.element.firstChild)
            return {left: 0, right: 0};
        var style = dom.computedStyle(this.element.firstChild);
        this.$padding = {};
        this.$padding.left = parseInt(style.paddingLeft) + 1 || 0;
        this.$padding.right = parseInt(style.paddingRight) || 0;
        return this.$padding;
    };

    this.getRegion = function(point) {
        var padding = this.$padding || this.$computePadding();
        var rect = this.element.getBoundingClientRect();
        if (point.x < padding.left + rect.left)
            return "markers";
        if (this.$showFoldWidgets && point.x > rect.right - padding.right)
            return "foldWidgets";
    };

}).call(Gutter.prototype);

exports.Gutter = Gutter;

});

ace.define("ace/layer/marker",["require","exports","module","ace/range","ace/lib/dom"], function(acequire, exports, module) {
"use strict";

var Range = acequire("../range").Range;
var dom = acequire("../lib/dom");

var Marker = function(parentEl) {
    this.element = dom.createElement("div");
    this.element.className = "ace_layer ace_marker-layer";
    parentEl.appendChild(this.element);
};

(function() {

    this.$padding = 0;

    this.setPadding = function(padding) {
        this.$padding = padding;
    };
    this.setSession = function(session) {
        this.session = session;
    };
    
    this.setMarkers = function(markers) {
        this.markers = markers;
    };

    this.update = function(config) {
        if (!config) return;

        this.config = config;


        var html = [];
        for (var key in this.markers) {
            var marker = this.markers[key];

            if (!marker.range) {
                marker.update(html, this, this.session, config);
                continue;
            }

            var range = marker.range.clipRows(config.firstRow, config.lastRow);
            if (range.isEmpty()) continue;

            range = range.toScreenRange(this.session);
            if (marker.renderer) {
                var top = this.$getTop(range.start.row, config);
                var left = this.$padding + (this.session.$bidiHandler.isBidiRow(range.start.row)
                    ? this.session.$bidiHandler.getPosLeft(range.start.column)
                    : range.start.column * config.characterWidth);
                marker.renderer(html, range, left, top, config);
            } else if (marker.type == "fullLine") {
                this.drawFullLineMarker(html, range, marker.clazz, config);
            } else if (marker.type == "screenLine") {
                this.drawScreenLineMarker(html, range, marker.clazz, config);
            } else if (range.isMultiLine()) {
                if (marker.type == "text")
                    this.drawTextMarker(html, range, marker.clazz, config);
                else
                    this.drawMultiLineMarker(html, range, marker.clazz, config);
            } else {
                if (this.session.$bidiHandler.isBidiRow(range.start.row)) {
                    this.drawBidiSingleLineMarker(html, range, marker.clazz + " ace_start" + " ace_br15", config);
                } else {
                    this.drawSingleLineMarker(html, range, marker.clazz + " ace_start" + " ace_br15", config);
                }
            }
        }
        this.element.innerHTML = html.join("");
    };

    this.$getTop = function(row, layerConfig) {
        return (row - layerConfig.firstRowScreen) * layerConfig.lineHeight;
    };

    function getBorderClass(tl, tr, br, bl) {
        return (tl ? 1 : 0) | (tr ? 2 : 0) | (br ? 4 : 0) | (bl ? 8 : 0);
    }
    this.drawTextMarker = function(stringBuilder, range, clazz, layerConfig, extraStyle) {
        var session = this.session;
        var start = range.start.row;
        var end = range.end.row;
        var row = start;
        var prev = 0; 
        var curr = 0;
        var next = session.getScreenLastRowColumn(row);
        var clazzModified = null;
        var lineRange = new Range(row, range.start.column, row, curr);
        for (; row <= end; row++) {
            lineRange.start.row = lineRange.end.row = row;
            lineRange.start.column = row == start ? range.start.column : session.getRowWrapIndent(row);
            lineRange.end.column = next;
            prev = curr;
            curr = next;
            next = row + 1 < end ? session.getScreenLastRowColumn(row + 1) : row == end ? 0 : range.end.column;
            clazzModified = clazz + (row == start  ? " ace_start" : "") + " ace_br"
                + getBorderClass(row == start || row == start + 1 && range.start.column, prev < curr, curr > next, row == end);

            if (this.session.$bidiHandler.isBidiRow(row)) {
                this.drawBidiSingleLineMarker(stringBuilder, lineRange, clazzModified,
                    layerConfig, row == end ? 0 : 1, extraStyle);
            } else {
                this.drawSingleLineMarker(stringBuilder, lineRange, clazzModified,
                    layerConfig, row == end ? 0 : 1, extraStyle);
            }
        }
    };
    this.drawMultiLineMarker = function(stringBuilder, range, clazz, config, extraStyle) {
        var padding = this.$padding;
        var height, top, left;
        extraStyle = extraStyle || "";
       if (this.session.$bidiHandler.isBidiRow(range.start.row)) {
           var range1 = range.clone();
           range1.end.row = range1.start.row;
           range1.end.column = this.session.getLine(range1.start.row).length;
           this.drawBidiSingleLineMarker(stringBuilder, range1, clazz + " ace_br1 ace_start", config, null, extraStyle);
        } else {
           height = config.lineHeight;
           top = this.$getTop(range.start.row, config);
           left = padding + range.start.column * config.characterWidth;
           stringBuilder.push(
               "<div class='", clazz, " ace_br1 ace_start' style='",
               "height:", height, "px;",
               "right:0;",
               "top:", top, "px;",
               "left:", left, "px;", extraStyle, "'></div>"
           );
        }
        if (this.session.$bidiHandler.isBidiRow(range.end.row)) {
           var range1 = range.clone();
           range1.start.row = range1.end.row;
           range1.start.column = 0;
           this.drawBidiSingleLineMarker(stringBuilder, range1, clazz + " ace_br12", config, null, extraStyle);
        } else {
           var width = range.end.column * config.characterWidth;
           height = config.lineHeight;
           top = this.$getTop(range.end.row, config);
           stringBuilder.push(
               "<div class='", clazz, " ace_br12' style='",
               "height:", height, "px;",
               "width:", width, "px;",
               "top:", top, "px;",
               "left:", padding, "px;", extraStyle, "'></div>"
           );
        }
        height = (range.end.row - range.start.row - 1) * config.lineHeight;
        if (height <= 0)
            return;
        top = this.$getTop(range.start.row + 1, config);
        
        var radiusClass = (range.start.column ? 1 : 0) | (range.end.column ? 0 : 8);

        stringBuilder.push(
            "<div class='", clazz, (radiusClass ? " ace_br" + radiusClass : ""), "' style='",
            "height:", height, "px;",
            "right:0;",
            "top:", top, "px;",
            "left:", padding, "px;", extraStyle, "'></div>"
        );
    };
    this.drawSingleLineMarker = function(stringBuilder, range, clazz, config, extraLength, extraStyle) {
        var height = config.lineHeight;
        var width = (range.end.column + (extraLength || 0) - range.start.column) * config.characterWidth;

        var top = this.$getTop(range.start.row, config);
        var left = this.$padding + range.start.column * config.characterWidth;

        stringBuilder.push(
            "<div class='", clazz, "' style='",
            "height:", height, "px;",
            "width:", width, "px;",
            "top:", top, "px;",
            "left:", left, "px;", extraStyle || "", "'></div>"
        );
    };
    this.drawBidiSingleLineMarker = function(stringBuilder, range, clazz, config, extraLength, extraStyle) {
        var height = config.lineHeight, top = this.$getTop(range.start.row, config), padding = this.$padding;
        var selections = this.session.$bidiHandler.getSelections(range.start.column, range.end.column);

        selections.forEach(function(selection) {
            stringBuilder.push(
                "<div class='", clazz, "' style='",
                "height:", height, "px;",
                "width:", selection.width + (extraLength || 0), "px;",
                "top:", top, "px;",
                "left:", padding + selection.left, "px;", extraStyle || "", "'></div>"
            );
        });
    };

    this.drawFullLineMarker = function(stringBuilder, range, clazz, config, extraStyle) {
        var top = this.$getTop(range.start.row, config);
        var height = config.lineHeight;
        if (range.start.row != range.end.row)
            height += this.$getTop(range.end.row, config) - top;

        stringBuilder.push(
            "<div class='", clazz, "' style='",
            "height:", height, "px;",
            "top:", top, "px;",
            "left:0;right:0;", extraStyle || "", "'></div>"
        );
    };
    
    this.drawScreenLineMarker = function(stringBuilder, range, clazz, config, extraStyle) {
        var top = this.$getTop(range.start.row, config);
        var height = config.lineHeight;

        stringBuilder.push(
            "<div class='", clazz, "' style='",
            "height:", height, "px;",
            "top:", top, "px;",
            "left:0;right:0;", extraStyle || "", "'></div>"
        );
    };

}).call(Marker.prototype);

exports.Marker = Marker;

});

ace.define("ace/layer/text",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/lib/lang","ace/lib/useragent","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../lib/oop");
var dom = acequire("../lib/dom");
var lang = acequire("../lib/lang");
var useragent = acequire("../lib/useragent");
var EventEmitter = acequire("../lib/event_emitter").EventEmitter;

var Text = function(parentEl) {
    this.element = dom.createElement("div");
    this.element.className = "ace_layer ace_text-layer";
    parentEl.appendChild(this.element);
    this.$updateEolChar = this.$updateEolChar.bind(this);
};

(function() {

    oop.implement(this, EventEmitter);

    this.EOF_CHAR = "\xB6";
    this.EOL_CHAR_LF = "\xAC";
    this.EOL_CHAR_CRLF = "\xa4";
    this.EOL_CHAR = this.EOL_CHAR_LF;
    this.TAB_CHAR = "\u2014"; //"\u21E5";
    this.SPACE_CHAR = "\xB7";
    this.$padding = 0;

    this.$updateEolChar = function() {
        var EOL_CHAR = this.session.doc.getNewLineCharacter() == "\n"
           ? this.EOL_CHAR_LF
           : this.EOL_CHAR_CRLF;
        if (this.EOL_CHAR != EOL_CHAR) {
            this.EOL_CHAR = EOL_CHAR;
            return true;
        }
    };

    this.setPadding = function(padding) {
        this.$padding = padding;
        this.element.style.padding = "0 " + padding + "px";
    };

    this.getLineHeight = function() {
        return this.$fontMetrics.$characterSize.height || 0;
    };

    this.getCharacterWidth = function() {
        return this.$fontMetrics.$characterSize.width || 0;
    };
    
    this.$setFontMetrics = function(measure) {
        this.$fontMetrics = measure;
        this.$fontMetrics.on("changeCharacterSize", function(e) {
            this._signal("changeCharacterSize", e);
        }.bind(this));
        this.$pollSizeChanges();
    };

    this.checkForSizeChanges = function() {
        this.$fontMetrics.checkForSizeChanges();
    };
    this.$pollSizeChanges = function() {
        return this.$pollSizeChangesTimer = this.$fontMetrics.$pollSizeChanges();
    };
    this.setSession = function(session) {
        this.session = session;
        if (session)
            this.$computeTabString();
    };

    this.showInvisibles = false;
    this.setShowInvisibles = function(showInvisibles) {
        if (this.showInvisibles == showInvisibles)
            return false;

        this.showInvisibles = showInvisibles;
        this.$computeTabString();
        return true;
    };

    this.displayIndentGuides = true;
    this.setDisplayIndentGuides = function(display) {
        if (this.displayIndentGuides == display)
            return false;

        this.displayIndentGuides = display;
        this.$computeTabString();
        return true;
    };

    this.$tabStrings = [];
    this.onChangeTabSize =
    this.$computeTabString = function() {
        var tabSize = this.session.getTabSize();
        this.tabSize = tabSize;
        var tabStr = this.$tabStrings = [0];
        for (var i = 1; i < tabSize + 1; i++) {
            if (this.showInvisibles) {
                tabStr.push("<span class='ace_invisible ace_invisible_tab'>"
                    + lang.stringRepeat(this.TAB_CHAR, i)
                    + "</span>");
            } else {
                tabStr.push(lang.stringRepeat(" ", i));
            }
        }
        if (this.displayIndentGuides) {
            this.$indentGuideRe =  /\s\S| \t|\t |\s$/;
            var className = "ace_indent-guide";
            var spaceClass = "";
            var tabClass = "";
            if (this.showInvisibles) {
                className += " ace_invisible";
                spaceClass = " ace_invisible_space";
                tabClass = " ace_invisible_tab";
                var spaceContent = lang.stringRepeat(this.SPACE_CHAR, this.tabSize);
                var tabContent = lang.stringRepeat(this.TAB_CHAR, this.tabSize);
            } else{
                var spaceContent = lang.stringRepeat(" ", this.tabSize);
                var tabContent = spaceContent;
            }

            this.$tabStrings[" "] = "<span class='" + className + spaceClass + "'>" + spaceContent + "</span>";
            this.$tabStrings["\t"] = "<span class='" + className + tabClass + "'>" + tabContent + "</span>";
        }
    };

    this.updateLines = function(config, firstRow, lastRow) {
        if (this.config.lastRow != config.lastRow ||
            this.config.firstRow != config.firstRow) {
            this.scrollLines(config);
        }
        this.config = config;

        var first = Math.max(firstRow, config.firstRow);
        var last = Math.min(lastRow, config.lastRow);

        var lineElements = this.element.childNodes;
        var lineElementsIdx = 0;

        for (var row = config.firstRow; row < first; row++) {
            var foldLine = this.session.getFoldLine(row);
            if (foldLine) {
                if (foldLine.containsRow(first)) {
                    first = foldLine.start.row;
                    break;
                } else {
                    row = foldLine.end.row;
                }
            }
            lineElementsIdx ++;
        }

        var row = first;
        var foldLine = this.session.getNextFoldLine(row);
        var foldStart = foldLine ? foldLine.start.row : Infinity;

        while (true) {
            if (row > foldStart) {
                row = foldLine.end.row+1;
                foldLine = this.session.getNextFoldLine(row, foldLine);
                foldStart = foldLine ? foldLine.start.row :Infinity;
            }
            if (row > last)
                break;

            var lineElement = lineElements[lineElementsIdx++];
            if (lineElement) {
                var html = [];
                this.$renderLine(
                    html, row, !this.$useLineGroups(), row == foldStart ? foldLine : false
                );
                lineElement.style.height = config.lineHeight * this.session.getRowLength(row) + "px";
                lineElement.innerHTML = html.join("");
            }
            row++;
        }
    };

    this.scrollLines = function(config) {
        var oldConfig = this.config;
        this.config = config;

        if (!oldConfig || oldConfig.lastRow < config.firstRow)
            return this.update(config);

        if (config.lastRow < oldConfig.firstRow)
            return this.update(config);

        var el = this.element;
        if (oldConfig.firstRow < config.firstRow)
            for (var row=this.session.getFoldedRowCount(oldConfig.firstRow, config.firstRow - 1); row>0; row--)
                el.removeChild(el.firstChild);

        if (oldConfig.lastRow > config.lastRow)
            for (var row=this.session.getFoldedRowCount(config.lastRow + 1, oldConfig.lastRow); row>0; row--)
                el.removeChild(el.lastChild);

        if (config.firstRow < oldConfig.firstRow) {
            var fragment = this.$renderLinesFragment(config, config.firstRow, oldConfig.firstRow - 1);
            if (el.firstChild)
                el.insertBefore(fragment, el.firstChild);
            else
                el.appendChild(fragment);
        }

        if (config.lastRow > oldConfig.lastRow) {
            var fragment = this.$renderLinesFragment(config, oldConfig.lastRow + 1, config.lastRow);
            el.appendChild(fragment);
        }
    };

    this.$renderLinesFragment = function(config, firstRow, lastRow) {
        var fragment = this.element.ownerDocument.createDocumentFragment();
        var row = firstRow;
        var foldLine = this.session.getNextFoldLine(row);
        var foldStart = foldLine ? foldLine.start.row : Infinity;

        while (true) {
            if (row > foldStart) {
                row = foldLine.end.row+1;
                foldLine = this.session.getNextFoldLine(row, foldLine);
                foldStart = foldLine ? foldLine.start.row : Infinity;
            }
            if (row > lastRow)
                break;

            var container = dom.createElement("div");

            var html = [];
            this.$renderLine(html, row, false, row == foldStart ? foldLine : false);
            container.innerHTML = html.join("");
            if (this.$useLineGroups()) {
                container.className = 'ace_line_group';
                fragment.appendChild(container);
                container.style.height = config.lineHeight * this.session.getRowLength(row) + "px";

            } else {
                while(container.firstChild)
                    fragment.appendChild(container.firstChild);
            }

            row++;
        }
        return fragment;
    };

    this.update = function(config) {
        this.config = config;

        var html = [];
        var firstRow = config.firstRow, lastRow = config.lastRow;

        var row = firstRow;
        var foldLine = this.session.getNextFoldLine(row);
        var foldStart = foldLine ? foldLine.start.row : Infinity;

        while (true) {
            if (row > foldStart) {
                row = foldLine.end.row+1;
                foldLine = this.session.getNextFoldLine(row, foldLine);
                foldStart = foldLine ? foldLine.start.row :Infinity;
            }
            if (row > lastRow)
                break;

            if (this.$useLineGroups())
                html.push("<div class='ace_line_group' style='height:", config.lineHeight*this.session.getRowLength(row), "px'>");

            this.$renderLine(html, row, false, row == foldStart ? foldLine : false);

            if (this.$useLineGroups())
                html.push("</div>"); // end the line group

            row++;
        }
        this.element.innerHTML = html.join("");
    };

    this.$textToken = {
        "text": true,
        "rparen": true,
        "lparen": true
    };

    this.$renderToken = function(stringBuilder, screenColumn, token, value) {
        var self = this;
        var replaceReg = /\t|&|<|>|( +)|([\x00-\x1f\x80-\xa0\xad\u1680\u180E\u2000-\u200f\u2028\u2029\u202F\u205F\u3000\uFEFF\uFFF9-\uFFFC])|[\u1100-\u115F\u11A3-\u11A7\u11FA-\u11FF\u2329-\u232A\u2E80-\u2E99\u2E9B-\u2EF3\u2F00-\u2FD5\u2FF0-\u2FFB\u3000-\u303E\u3041-\u3096\u3099-\u30FF\u3105-\u312D\u3131-\u318E\u3190-\u31BA\u31C0-\u31E3\u31F0-\u321E\u3220-\u3247\u3250-\u32FE\u3300-\u4DBF\u4E00-\uA48C\uA490-\uA4C6\uA960-\uA97C\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFAFF\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE66\uFE68-\uFE6B\uFF01-\uFF60\uFFE0-\uFFE6]|[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
        var replaceFunc = function(c, a, b, tabIdx, idx4) {
            if (a) {
                return self.showInvisibles
                    ? "<span class='ace_invisible ace_invisible_space'>" + lang.stringRepeat(self.SPACE_CHAR, c.length) + "</span>"
                    : c;
            } else if (c == "&") {
                return "&#38;";
            } else if (c == "<") {
                return "&#60;";
            } else if (c == ">") {
                return "&#62;";
            } else if (c == "\t") {
                var tabSize = self.session.getScreenTabSize(screenColumn + tabIdx);
                screenColumn += tabSize - 1;
                return self.$tabStrings[tabSize];
            } else if (c == "\u3000") {
                var classToUse = self.showInvisibles ? "ace_cjk ace_invisible ace_invisible_space" : "ace_cjk";
                var space = self.showInvisibles ? self.SPACE_CHAR : "";
                screenColumn += 1;
                return "<span class='" + classToUse + "' style='width:" +
                    (self.config.characterWidth * 2) +
                    "px'>" + space + "</span>";
            } else if (b) {
                return "<span class='ace_invisible ace_invisible_space ace_invalid'>" + self.SPACE_CHAR + "</span>";
            } else {
                screenColumn += 1;
                return "<span class='ace_cjk' style='width:" +
                    (self.config.characterWidth * 2) +
                    "px'>" + c + "</span>";
            }
        };

        var output = value.replace(replaceReg, replaceFunc);

        if (!this.$textToken[token.type]) {
            var classes = "ace_" + token.type.replace(/\./g, " ace_");
            var style = "";
            if (token.type == "fold")
                style = " style='width:" + (token.value.length * this.config.characterWidth) + "px;' ";
            stringBuilder.push("<span class='", classes, "'", style, ">", output, "</span>");
        }
        else {
            stringBuilder.push(output);
        }
        return screenColumn + value.length;
    };

    this.renderIndentGuide = function(stringBuilder, value, max) {
        var cols = value.search(this.$indentGuideRe);
        if (cols <= 0 || cols >= max)
            return value;
        if (value[0] == " ") {
            cols -= cols % this.tabSize;
            stringBuilder.push(lang.stringRepeat(this.$tabStrings[" "], cols/this.tabSize));
            return value.substr(cols);
        } else if (value[0] == "\t") {
            stringBuilder.push(lang.stringRepeat(this.$tabStrings["\t"], cols));
            return value.substr(cols);
        }
        return value;
    };

    this.$renderWrappedLine = function(stringBuilder, tokens, splits, onlyContents) {
        var chars = 0;
        var split = 0;
        var splitChars = splits[0];
        var screenColumn = 0;

        for (var i = 0; i < tokens.length; i++) {
            var token = tokens[i];
            var value = token.value;
            if (i == 0 && this.displayIndentGuides) {
                chars = value.length;
                value = this.renderIndentGuide(stringBuilder, value, splitChars);
                if (!value)
                    continue;
                chars -= value.length;
            }

            if (chars + value.length < splitChars) {
                screenColumn = this.$renderToken(stringBuilder, screenColumn, token, value);
                chars += value.length;
            } else {
                while (chars + value.length >= splitChars) {
                    screenColumn = this.$renderToken(
                        stringBuilder, screenColumn,
                        token, value.substring(0, splitChars - chars)
                    );
                    value = value.substring(splitChars - chars);
                    chars = splitChars;

                    if (!onlyContents) {
                        stringBuilder.push("</div>",
                            "<div class='ace_line' style='height:",
                            this.config.lineHeight, "px'>"
                        );
                    }

                    stringBuilder.push(lang.stringRepeat("\xa0", splits.indent));

                    split ++;
                    screenColumn = 0;
                    splitChars = splits[split] || Number.MAX_VALUE;
                }
                if (value.length != 0) {
                    chars += value.length;
                    screenColumn = this.$renderToken(
                        stringBuilder, screenColumn, token, value
                    );
                }
            }
        }
    };

    this.$renderSimpleLine = function(stringBuilder, tokens) {
        var screenColumn = 0;
        var token = tokens[0];
        var value = token.value;
        if (this.displayIndentGuides)
            value = this.renderIndentGuide(stringBuilder, value);
        if (value)
            screenColumn = this.$renderToken(stringBuilder, screenColumn, token, value);
        for (var i = 1; i < tokens.length; i++) {
            token = tokens[i];
            value = token.value;
            screenColumn = this.$renderToken(stringBuilder, screenColumn, token, value);
        }
    };
    this.$renderLine = function(stringBuilder, row, onlyContents, foldLine) {
        if (!foldLine && foldLine != false)
            foldLine = this.session.getFoldLine(row);

        if (foldLine)
            var tokens = this.$getFoldLineTokens(row, foldLine);
        else
            var tokens = this.session.getTokens(row);


        if (!onlyContents) {
            stringBuilder.push(
                "<div class='ace_line' style='height:", 
                    this.config.lineHeight * (
                        this.$useLineGroups() ? 1 :this.session.getRowLength(row)
                    ), "px'>"
            );
        }

        if (tokens.length) {
            var splits = this.session.getRowSplitData(row);
            if (splits && splits.length)
                this.$renderWrappedLine(stringBuilder, tokens, splits, onlyContents);
            else
                this.$renderSimpleLine(stringBuilder, tokens);
        }

        if (this.showInvisibles) {
            if (foldLine)
                row = foldLine.end.row;

            stringBuilder.push(
                "<span class='ace_invisible ace_invisible_eol'>",
                row == this.session.getLength() - 1 ? this.EOF_CHAR : this.EOL_CHAR,
                "</span>"
            );
        }
        if (!onlyContents)
            stringBuilder.push("</div>");
    };

    this.$getFoldLineTokens = function(row, foldLine) {
        var session = this.session;
        var renderTokens = [];

        function addTokens(tokens, from, to) {
            var idx = 0, col = 0;
            while ((col + tokens[idx].value.length) < from) {
                col += tokens[idx].value.length;
                idx++;

                if (idx == tokens.length)
                    return;
            }
            if (col != from) {
                var value = tokens[idx].value.substring(from - col);
                if (value.length > (to - from))
                    value = value.substring(0, to - from);

                renderTokens.push({
                    type: tokens[idx].type,
                    value: value
                });

                col = from + value.length;
                idx += 1;
            }

            while (col < to && idx < tokens.length) {
                var value = tokens[idx].value;
                if (value.length + col > to) {
                    renderTokens.push({
                        type: tokens[idx].type,
                        value: value.substring(0, to - col)
                    });
                } else
                    renderTokens.push(tokens[idx]);
                col += value.length;
                idx += 1;
            }
        }

        var tokens = session.getTokens(row);
        foldLine.walk(function(placeholder, row, column, lastColumn, isNewRow) {
            if (placeholder != null) {
                renderTokens.push({
                    type: "fold",
                    value: placeholder
                });
            } else {
                if (isNewRow)
                    tokens = session.getTokens(row);

                if (tokens.length)
                    addTokens(tokens, lastColumn, column);
            }
        }, foldLine.end.row, this.session.getLine(foldLine.end.row).length);

        return renderTokens;
    };

    this.$useLineGroups = function() {
        return this.session.getUseWrapMode();
    };

    this.destroy = function() {
        clearInterval(this.$pollSizeChangesTimer);
        if (this.$measureNode)
            this.$measureNode.parentNode.removeChild(this.$measureNode);
        delete this.$measureNode;
    };

}).call(Text.prototype);

exports.Text = Text;

});

ace.define("ace/layer/cursor",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {
"use strict";

var dom = acequire("../lib/dom");
var isIE8;

var Cursor = function(parentEl) {
    this.element = dom.createElement("div");
    this.element.className = "ace_layer ace_cursor-layer";
    parentEl.appendChild(this.element);
    
    if (isIE8 === undefined)
        isIE8 = !("opacity" in this.element.style);

    this.isVisible = false;
    this.isBlinking = true;
    this.blinkInterval = 1000;
    this.smoothBlinking = false;

    this.cursors = [];
    this.cursor = this.addCursor();
    dom.addCssClass(this.element, "ace_hidden-cursors");
    this.$updateCursors = (isIE8
        ? this.$updateVisibility
        : this.$updateOpacity).bind(this);
};

(function() {
    
    this.$updateVisibility = function(val) {
        var cursors = this.cursors;
        for (var i = cursors.length; i--; )
            cursors[i].style.visibility = val ? "" : "hidden";
    };
    this.$updateOpacity = function(val) {
        var cursors = this.cursors;
        for (var i = cursors.length; i--; )
            cursors[i].style.opacity = val ? "" : "0";
    };
    

    this.$padding = 0;
    this.setPadding = function(padding) {
        this.$padding = padding;
    };

    this.setSession = function(session) {
        this.session = session;
    };

    this.setBlinking = function(blinking) {
        if (blinking != this.isBlinking){
            this.isBlinking = blinking;
            this.restartTimer();
        }
    };

    this.setBlinkInterval = function(blinkInterval) {
        if (blinkInterval != this.blinkInterval){
            this.blinkInterval = blinkInterval;
            this.restartTimer();
        }
    };

    this.setSmoothBlinking = function(smoothBlinking) {
        if (smoothBlinking != this.smoothBlinking && !isIE8) {
            this.smoothBlinking = smoothBlinking;
            dom.setCssClass(this.element, "ace_smooth-blinking", smoothBlinking);
            this.$updateCursors(true);
            this.$updateCursors = (this.$updateOpacity).bind(this);
            this.restartTimer();
        }
    };

    this.addCursor = function() {
        var el = dom.createElement("div");
        el.className = "ace_cursor";
        this.element.appendChild(el);
        this.cursors.push(el);
        return el;
    };

    this.removeCursor = function() {
        if (this.cursors.length > 1) {
            var el = this.cursors.pop();
            el.parentNode.removeChild(el);
            return el;
        }
    };

    this.hideCursor = function() {
        this.isVisible = false;
        dom.addCssClass(this.element, "ace_hidden-cursors");
        this.restartTimer();
    };

    this.showCursor = function() {
        this.isVisible = true;
        dom.removeCssClass(this.element, "ace_hidden-cursors");
        this.restartTimer();
    };

    this.restartTimer = function() {
        var update = this.$updateCursors;
        clearInterval(this.intervalId);
        clearTimeout(this.timeoutId);
        if (this.smoothBlinking) {
            dom.removeCssClass(this.element, "ace_smooth-blinking");
        }
        
        update(true);

        if (!this.isBlinking || !this.blinkInterval || !this.isVisible)
            return;

        if (this.smoothBlinking) {
            setTimeout(function(){
                dom.addCssClass(this.element, "ace_smooth-blinking");
            }.bind(this));
        }
        
        var blink = function(){
            this.timeoutId = setTimeout(function() {
                update(false);
            }, 0.6 * this.blinkInterval);
        }.bind(this);

        this.intervalId = setInterval(function() {
            update(true);
            blink();
        }, this.blinkInterval);

        blink();
    };

    this.getPixelPosition = function(position, onScreen) {
        if (!this.config || !this.session)
            return {left : 0, top : 0};

        if (!position)
            position = this.session.selection.getCursor();
        var pos = this.session.documentToScreenPosition(position);
        var cursorLeft = this.$padding + (this.session.$bidiHandler.isBidiRow(pos.row, position.row)
            ? this.session.$bidiHandler.getPosLeft(pos.column)
            : pos.column * this.config.characterWidth);

        var cursorTop = (pos.row - (onScreen ? this.config.firstRowScreen : 0)) *
            this.config.lineHeight;

        return {left : cursorLeft, top : cursorTop};
    };

    this.update = function(config) {
        this.config = config;

        var selections = this.session.$selectionMarkers;
        var i = 0, cursorIndex = 0;

        if (selections === undefined || selections.length === 0){
            selections = [{cursor: null}];
        }

        for (var i = 0, n = selections.length; i < n; i++) {
            var pixelPos = this.getPixelPosition(selections[i].cursor, true);
            if ((pixelPos.top > config.height + config.offset ||
                 pixelPos.top < 0) && i > 1) {
                continue;
            }

            var style = (this.cursors[cursorIndex++] || this.addCursor()).style;
            
            if (!this.drawCursor) {
                style.left = pixelPos.left + "px";
                style.top = pixelPos.top + "px";
                style.width = config.characterWidth + "px";
                style.height = config.lineHeight + "px";
            } else {
                this.drawCursor(style, pixelPos, config, selections[i], this.session);
            }
        }
        while (this.cursors.length > cursorIndex)
            this.removeCursor();

        var overwrite = this.session.getOverwrite();
        this.$setOverwrite(overwrite);
        this.$pixelPos = pixelPos;
        this.restartTimer();
    };
    
    this.drawCursor = null;

    this.$setOverwrite = function(overwrite) {
        if (overwrite != this.overwrite) {
            this.overwrite = overwrite;
            if (overwrite)
                dom.addCssClass(this.element, "ace_overwrite-cursors");
            else
                dom.removeCssClass(this.element, "ace_overwrite-cursors");
        }
    };

    this.destroy = function() {
        clearInterval(this.intervalId);
        clearTimeout(this.timeoutId);
    };

}).call(Cursor.prototype);

exports.Cursor = Cursor;

});

ace.define("ace/scrollbar",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/lib/event","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var dom = acequire("./lib/dom");
var event = acequire("./lib/event");
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var MAX_SCROLL_H = 0x8000;
var ScrollBar = function(parent) {
    this.element = dom.createElement("div");
    this.element.className = "ace_scrollbar ace_scrollbar" + this.classSuffix;

    this.inner = dom.createElement("div");
    this.inner.className = "ace_scrollbar-inner";
    this.element.appendChild(this.inner);

    parent.appendChild(this.element);

    this.setVisible(false);
    this.skipEvent = false;

    event.addListener(this.element, "scroll", this.onScroll.bind(this));
    event.addListener(this.element, "mousedown", event.preventDefault);
};

(function() {
    oop.implement(this, EventEmitter);

    this.setVisible = function(isVisible) {
        this.element.style.display = isVisible ? "" : "none";
        this.isVisible = isVisible;
        this.coeff = 1;
    };
}).call(ScrollBar.prototype);
var VScrollBar = function(parent, renderer) {
    ScrollBar.call(this, parent);
    this.scrollTop = 0;
    this.scrollHeight = 0;
    renderer.$scrollbarWidth = 
    this.width = dom.scrollbarWidth(parent.ownerDocument);
    this.inner.style.width =
    this.element.style.width = (this.width || 15) + 5 + "px";
    this.$minWidth = 0;
};

oop.inherits(VScrollBar, ScrollBar);

(function() {

    this.classSuffix = '-v';
    this.onScroll = function() {
        if (!this.skipEvent) {
            this.scrollTop = this.element.scrollTop;
            if (this.coeff != 1) {
                var h = this.element.clientHeight / this.scrollHeight;
                this.scrollTop = this.scrollTop * (1 - h) / (this.coeff - h);
            }
            this._emit("scroll", {data: this.scrollTop});
        }
        this.skipEvent = false;
    };
    this.getWidth = function() {
        return Math.max(this.isVisible ? this.width : 0, this.$minWidth || 0);
    };
    this.setHeight = function(height) {
        this.element.style.height = height + "px";
    };
    this.setInnerHeight =
    this.setScrollHeight = function(height) {
        this.scrollHeight = height;
        if (height > MAX_SCROLL_H) {
            this.coeff = MAX_SCROLL_H / height;
            height = MAX_SCROLL_H;
        } else if (this.coeff != 1) {
            this.coeff = 1;
        }
        this.inner.style.height = height + "px";
    };
    this.setScrollTop = function(scrollTop) {
        if (this.scrollTop != scrollTop) {
            this.skipEvent = true;
            this.scrollTop = scrollTop;
            this.element.scrollTop = scrollTop * this.coeff;
        }
    };

}).call(VScrollBar.prototype);
var HScrollBar = function(parent, renderer) {
    ScrollBar.call(this, parent);
    this.scrollLeft = 0;
    this.height = renderer.$scrollbarWidth;
    this.inner.style.height =
    this.element.style.height = (this.height || 15) + 5 + "px";
};

oop.inherits(HScrollBar, ScrollBar);

(function() {

    this.classSuffix = '-h';
    this.onScroll = function() {
        if (!this.skipEvent) {
            this.scrollLeft = this.element.scrollLeft;
            this._emit("scroll", {data: this.scrollLeft});
        }
        this.skipEvent = false;
    };
    this.getHeight = function() {
        return this.isVisible ? this.height : 0;
    };
    this.setWidth = function(width) {
        this.element.style.width = width + "px";
    };
    this.setInnerWidth = function(width) {
        this.inner.style.width = width + "px";
    };
    this.setScrollWidth = function(width) {
        this.inner.style.width = width + "px";
    };
    this.setScrollLeft = function(scrollLeft) {
        if (this.scrollLeft != scrollLeft) {
            this.skipEvent = true;
            this.scrollLeft = this.element.scrollLeft = scrollLeft;
        }
    };

}).call(HScrollBar.prototype);


exports.ScrollBar = VScrollBar; // backward compatibility
exports.ScrollBarV = VScrollBar; // backward compatibility
exports.ScrollBarH = HScrollBar; // backward compatibility

exports.VScrollBar = VScrollBar;
exports.HScrollBar = HScrollBar;
});

ace.define("ace/renderloop",["require","exports","module","ace/lib/event"], function(acequire, exports, module) {
"use strict";

var event = acequire("./lib/event");


var RenderLoop = function(onRender, win) {
    this.onRender = onRender;
    this.pending = false;
    this.changes = 0;
    this.window = win || window;
};

(function() {


    this.schedule = function(change) {
        this.changes = this.changes | change;
        if (!this.pending && this.changes) {
            this.pending = true;
            var _self = this;
            event.nextFrame(function() {
                _self.pending = false;
                var changes;
                while (changes = _self.changes) {
                    _self.changes = 0;
                    _self.onRender(changes);
                }
            }, this.window);
        }
    };

}).call(RenderLoop.prototype);

exports.RenderLoop = RenderLoop;
});

ace.define("ace/layer/font_metrics",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/lib/lang","ace/lib/useragent","ace/lib/event_emitter"], function(acequire, exports, module) {

var oop = acequire("../lib/oop");
var dom = acequire("../lib/dom");
var lang = acequire("../lib/lang");
var useragent = acequire("../lib/useragent");
var EventEmitter = acequire("../lib/event_emitter").EventEmitter;

var CHAR_COUNT = 0;

var FontMetrics = exports.FontMetrics = function(parentEl) {
    this.el = dom.createElement("div");
    this.$setMeasureNodeStyles(this.el.style, true);
    
    this.$main = dom.createElement("div");
    this.$setMeasureNodeStyles(this.$main.style);
    
    this.$measureNode = dom.createElement("div");
    this.$setMeasureNodeStyles(this.$measureNode.style);
    
    
    this.el.appendChild(this.$main);
    this.el.appendChild(this.$measureNode);
    parentEl.appendChild(this.el);
    
    if (!CHAR_COUNT)
        this.$testFractionalRect();
    this.$measureNode.innerHTML = lang.stringRepeat("X", CHAR_COUNT);
    
    this.$characterSize = {width: 0, height: 0};
    this.checkForSizeChanges();
};

(function() {

    oop.implement(this, EventEmitter);
        
    this.$characterSize = {width: 0, height: 0};
    
    this.$testFractionalRect = function() {
        var el = dom.createElement("div");
        this.$setMeasureNodeStyles(el.style);
        el.style.width = "0.2px";
        document.documentElement.appendChild(el);
        var w = el.getBoundingClientRect().width;
        if (w > 0 && w < 1)
            CHAR_COUNT = 50;
        else
            CHAR_COUNT = 100;
        el.parentNode.removeChild(el);
    };
    
    this.$setMeasureNodeStyles = function(style, isRoot) {
        style.width = style.height = "auto";
        style.left = style.top = "0px";
        style.visibility = "hidden";
        style.position = "absolute";
        style.whiteSpace = "pre";

        if (useragent.isIE < 8) {
            style["font-family"] = "inherit";
        } else {
            style.font = "inherit";
        }
        style.overflow = isRoot ? "hidden" : "visible";
    };

    this.checkForSizeChanges = function() {
        var size = this.$measureSizes();
        if (size && (this.$characterSize.width !== size.width || this.$characterSize.height !== size.height)) {
            this.$measureNode.style.fontWeight = "bold";
            var boldSize = this.$measureSizes();
            this.$measureNode.style.fontWeight = "";
            this.$characterSize = size;
            this.charSizes = Object.create(null);
            this.allowBoldFonts = boldSize && boldSize.width === size.width && boldSize.height === size.height;
            this._emit("changeCharacterSize", {data: size});
        }
    };

    this.$pollSizeChanges = function() {
        if (this.$pollSizeChangesTimer)
            return this.$pollSizeChangesTimer;
        var self = this;
        return this.$pollSizeChangesTimer = setInterval(function() {
            self.checkForSizeChanges();
        }, 500);
    };
    
    this.setPolling = function(val) {
        if (val) {
            this.$pollSizeChanges();
        } else if (this.$pollSizeChangesTimer) {
            clearInterval(this.$pollSizeChangesTimer);
            this.$pollSizeChangesTimer = 0;
        }
    };

    this.$measureSizes = function() {
        if (CHAR_COUNT === 50) {
            var rect = null;
            try { 
               rect = this.$measureNode.getBoundingClientRect();
            } catch(e) {
               rect = {width: 0, height:0 };
            }
            var size = {
                height: rect.height,
                width: rect.width / CHAR_COUNT
            };
        } else {
            var size = {
                height: this.$measureNode.clientHeight,
                width: this.$measureNode.clientWidth / CHAR_COUNT
            };
        }
        if (size.width === 0 || size.height === 0)
            return null;
        return size;
    };

    this.$measureCharWidth = function(ch) {
        this.$main.innerHTML = lang.stringRepeat(ch, CHAR_COUNT);
        var rect = this.$main.getBoundingClientRect();
        return rect.width / CHAR_COUNT;
    };
    
    this.getCharacterWidth = function(ch) {
        var w = this.charSizes[ch];
        if (w === undefined) {
            w = this.charSizes[ch] = this.$measureCharWidth(ch) / this.$characterSize.width;
        }
        return w;
    };

    this.destroy = function() {
        clearInterval(this.$pollSizeChangesTimer);
        if (this.el && this.el.parentNode)
            this.el.parentNode.removeChild(this.el);
    };

}).call(FontMetrics.prototype);

});

ace.define("ace/virtual_renderer",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/config","ace/lib/useragent","ace/layer/gutter","ace/layer/marker","ace/layer/text","ace/layer/cursor","ace/scrollbar","ace/scrollbar","ace/renderloop","ace/layer/font_metrics","ace/lib/event_emitter"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var dom = acequire("./lib/dom");
var config = acequire("./config");
var useragent = acequire("./lib/useragent");
var GutterLayer = acequire("./layer/gutter").Gutter;
var MarkerLayer = acequire("./layer/marker").Marker;
var TextLayer = acequire("./layer/text").Text;
var CursorLayer = acequire("./layer/cursor").Cursor;
var HScrollBar = acequire("./scrollbar").HScrollBar;
var VScrollBar = acequire("./scrollbar").VScrollBar;
var RenderLoop = acequire("./renderloop").RenderLoop;
var FontMetrics = acequire("./layer/font_metrics").FontMetrics;
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var editorCss = ".ace_editor {\
position: relative;\
overflow: hidden;\
font: 12px/normal 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;\
direction: ltr;\
text-align: left;\
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\
}\
.ace_scroller {\
position: absolute;\
overflow: hidden;\
top: 0;\
bottom: 0;\
background-color: inherit;\
-ms-user-select: none;\
-moz-user-select: none;\
-webkit-user-select: none;\
user-select: none;\
cursor: text;\
}\
.ace_content {\
position: absolute;\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
min-width: 100%;\
}\
.ace_dragging .ace_scroller:before{\
position: absolute;\
top: 0;\
left: 0;\
right: 0;\
bottom: 0;\
content: '';\
background: rgba(250, 250, 250, 0.01);\
z-index: 1000;\
}\
.ace_dragging.ace_dark .ace_scroller:before{\
background: rgba(0, 0, 0, 0.01);\
}\
.ace_selecting, .ace_selecting * {\
cursor: text !important;\
}\
.ace_gutter {\
position: absolute;\
overflow : hidden;\
width: auto;\
top: 0;\
bottom: 0;\
left: 0;\
cursor: default;\
z-index: 4;\
-ms-user-select: none;\
-moz-user-select: none;\
-webkit-user-select: none;\
user-select: none;\
}\
.ace_gutter-active-line {\
position: absolute;\
left: 0;\
right: 0;\
}\
.ace_scroller.ace_scroll-left {\
box-shadow: 17px 0 16px -16px rgba(0, 0, 0, 0.4) inset;\
}\
.ace_gutter-cell {\
padding-left: 19px;\
padding-right: 6px;\
background-repeat: no-repeat;\
}\
.ace_gutter-cell.ace_error {\
background-image: url(\"data:image/png;base64,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\");\
background-repeat: no-repeat;\
background-position: 2px center;\
}\
.ace_gutter-cell.ace_warning {\
background-image: url(\"data:image/png;base64,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\");\
background-position: 2px center;\
}\
.ace_gutter-cell.ace_info {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAAAAAA6mKC9AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAAJ0Uk5TAAB2k804AAAAPklEQVQY02NgIB68QuO3tiLznjAwpKTgNyDbMegwisCHZUETUZV0ZqOquBpXj2rtnpSJT1AEnnRmL2OgGgAAIKkRQap2htgAAAAASUVORK5CYII=\");\
background-position: 2px center;\
}\
.ace_dark .ace_gutter-cell.ace_info {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQBAMAAADt3eJSAAAAJFBMVEUAAAChoaGAgIAqKiq+vr6tra1ZWVmUlJSbm5s8PDxubm56enrdgzg3AAAAAXRSTlMAQObYZgAAAClJREFUeNpjYMAPdsMYHegyJZFQBlsUlMFVCWUYKkAZMxZAGdxlDMQBAG+TBP4B6RyJAAAAAElFTkSuQmCC\");\
}\
.ace_scrollbar {\
position: absolute;\
right: 0;\
bottom: 0;\
z-index: 6;\
}\
.ace_scrollbar-inner {\
position: absolute;\
cursor: text;\
left: 0;\
top: 0;\
}\
.ace_scrollbar-v{\
overflow-x: hidden;\
overflow-y: scroll;\
top: 0;\
}\
.ace_scrollbar-h {\
overflow-x: scroll;\
overflow-y: hidden;\
left: 0;\
}\
.ace_print-margin {\
position: absolute;\
height: 100%;\
}\
.ace_text-input {\
position: absolute;\
z-index: 0;\
width: 0.5em;\
height: 1em;\
opacity: 0;\
background: transparent;\
-moz-appearance: none;\
appearance: none;\
border: none;\
resize: none;\
outline: none;\
overflow: hidden;\
font: inherit;\
padding: 0 1px;\
margin: 0 -1px;\
text-indent: -1em;\
-ms-user-select: text;\
-moz-user-select: text;\
-webkit-user-select: text;\
user-select: text;\
white-space: pre!important;\
}\
.ace_text-input.ace_composition {\
background: inherit;\
color: inherit;\
z-index: 1000;\
opacity: 1;\
text-indent: 0;\
}\
.ace_layer {\
z-index: 1;\
position: absolute;\
overflow: hidden;\
word-wrap: normal;\
white-space: pre;\
height: 100%;\
width: 100%;\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
pointer-events: none;\
}\
.ace_gutter-layer {\
position: relative;\
width: auto;\
text-align: right;\
pointer-events: auto;\
}\
.ace_text-layer {\
font: inherit !important;\
}\
.ace_cjk {\
display: inline-block;\
text-align: center;\
}\
.ace_cursor-layer {\
z-index: 4;\
}\
.ace_cursor {\
z-index: 4;\
position: absolute;\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
border-left: 2px solid;\
transform: translatez(0);\
}\
.ace_multiselect .ace_cursor {\
border-left-width: 1px;\
}\
.ace_slim-cursors .ace_cursor {\
border-left-width: 1px;\
}\
.ace_overwrite-cursors .ace_cursor {\
border-left-width: 0;\
border-bottom: 1px solid;\
}\
.ace_hidden-cursors .ace_cursor {\
opacity: 0.2;\
}\
.ace_smooth-blinking .ace_cursor {\
-webkit-transition: opacity 0.18s;\
transition: opacity 0.18s;\
}\
.ace_marker-layer .ace_step, .ace_marker-layer .ace_stack {\
position: absolute;\
z-index: 3;\
}\
.ace_marker-layer .ace_selection {\
position: absolute;\
z-index: 5;\
}\
.ace_marker-layer .ace_bracket {\
position: absolute;\
z-index: 6;\
}\
.ace_marker-layer .ace_active-line {\
position: absolute;\
z-index: 2;\
}\
.ace_marker-layer .ace_selected-word {\
position: absolute;\
z-index: 4;\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
}\
.ace_line .ace_fold {\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
display: inline-block;\
height: 11px;\
margin-top: -2px;\
vertical-align: middle;\
background-image:\
url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAJpJREFUeNpi/P//PwOlgAXGYGRklAVSokD8GmjwY1wasKljQpYACtpCFeADcHVQfQyMQAwzwAZI3wJKvCLkfKBaMSClBlR7BOQikCFGQEErIH0VqkabiGCAqwUadAzZJRxQr/0gwiXIal8zQQPnNVTgJ1TdawL0T5gBIP1MUJNhBv2HKoQHHjqNrA4WO4zY0glyNKLT2KIfIMAAQsdgGiXvgnYAAAAASUVORK5CYII=\"),\
url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAA3CAYAAADNNiA5AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACJJREFUeNpi+P//fxgTAwPDBxDxD078RSX+YeEyDFMCIMAAI3INmXiwf2YAAAAASUVORK5CYII=\");\
background-repeat: no-repeat, repeat-x;\
background-position: center center, top left;\
color: transparent;\
border: 1px solid black;\
border-radius: 2px;\
cursor: pointer;\
pointer-events: auto;\
}\
.ace_dark .ace_fold {\
}\
.ace_fold:hover{\
background-image:\
url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAJpJREFUeNpi/P//PwOlgAXGYGRklAVSokD8GmjwY1wasKljQpYACtpCFeADcHVQfQyMQAwzwAZI3wJKvCLkfKBaMSClBlR7BOQikCFGQEErIH0VqkabiGCAqwUadAzZJRxQr/0gwiXIal8zQQPnNVTgJ1TdawL0T5gBIP1MUJNhBv2HKoQHHjqNrA4WO4zY0glyNKLT2KIfIMAAQsdgGiXvgnYAAAAASUVORK5CYII=\"),\
url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAA3CAYAAADNNiA5AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACBJREFUeNpi+P//fz4TAwPDZxDxD5X4i5fLMEwJgAADAEPVDbjNw87ZAAAAAElFTkSuQmCC\");\
}\
.ace_tooltip {\
background-color: #FFF;\
background-image: -webkit-linear-gradient(top, transparent, rgba(0, 0, 0, 0.1));\
background-image: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.1));\
border: 1px solid gray;\
border-radius: 1px;\
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);\
color: black;\
max-width: 100%;\
padding: 3px 4px;\
position: fixed;\
z-index: 999999;\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
cursor: default;\
white-space: pre;\
word-wrap: break-word;\
line-height: normal;\
font-style: normal;\
font-weight: normal;\
letter-spacing: normal;\
pointer-events: none;\
}\
.ace_folding-enabled > .ace_gutter-cell {\
padding-right: 13px;\
}\
.ace_fold-widget {\
-moz-box-sizing: border-box;\
-webkit-box-sizing: border-box;\
box-sizing: border-box;\
margin: 0 -12px 0 1px;\
display: none;\
width: 11px;\
vertical-align: top;\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAANElEQVR42mWKsQ0AMAzC8ixLlrzQjzmBiEjp0A6WwBCSPgKAXoLkqSot7nN3yMwR7pZ32NzpKkVoDBUxKAAAAABJRU5ErkJggg==\");\
background-repeat: no-repeat;\
background-position: center;\
border-radius: 3px;\
border: 1px solid transparent;\
cursor: pointer;\
}\
.ace_folding-enabled .ace_fold-widget {\
display: inline-block;   \
}\
.ace_fold-widget.ace_end {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAANElEQVR42m3HwQkAMAhD0YzsRchFKI7sAikeWkrxwScEB0nh5e7KTPWimZki4tYfVbX+MNl4pyZXejUO1QAAAABJRU5ErkJggg==\");\
}\
.ace_fold-widget.ace_closed {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAAGCAYAAAAG5SQMAAAAOUlEQVR42jXKwQkAMAgDwKwqKD4EwQ26sSOkVWjgIIHAzPiCgaqiqnJHZnKICBERHN194O5b9vbLuAVRL+l0YWnZAAAAAElFTkSuQmCCXA==\");\
}\
.ace_fold-widget:hover {\
border: 1px solid rgba(0, 0, 0, 0.3);\
background-color: rgba(255, 255, 255, 0.2);\
box-shadow: 0 1px 1px rgba(255, 255, 255, 0.7);\
}\
.ace_fold-widget:active {\
border: 1px solid rgba(0, 0, 0, 0.4);\
background-color: rgba(0, 0, 0, 0.05);\
box-shadow: 0 1px 1px rgba(255, 255, 255, 0.8);\
}\
.ace_dark .ace_fold-widget {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHklEQVQIW2P4//8/AzoGEQ7oGCaLLAhWiSwB146BAQCSTPYocqT0AAAAAElFTkSuQmCC\");\
}\
.ace_dark .ace_fold-widget.ace_end {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAH0lEQVQIW2P4//8/AxQ7wNjIAjDMgC4AxjCVKBirIAAF0kz2rlhxpAAAAABJRU5ErkJggg==\");\
}\
.ace_dark .ace_fold-widget.ace_closed {\
background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAAFCAYAAACAcVaiAAAAHElEQVQIW2P4//+/AxAzgDADlOOAznHAKgPWAwARji8UIDTfQQAAAABJRU5ErkJggg==\");\
}\
.ace_dark .ace_fold-widget:hover {\
box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);\
background-color: rgba(255, 255, 255, 0.1);\
}\
.ace_dark .ace_fold-widget:active {\
box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);\
}\
.ace_fold-widget.ace_invalid {\
background-color: #FFB4B4;\
border-color: #DE5555;\
}\
.ace_fade-fold-widgets .ace_fold-widget {\
-webkit-transition: opacity 0.4s ease 0.05s;\
transition: opacity 0.4s ease 0.05s;\
opacity: 0;\
}\
.ace_fade-fold-widgets:hover .ace_fold-widget {\
-webkit-transition: opacity 0.05s ease 0.05s;\
transition: opacity 0.05s ease 0.05s;\
opacity:1;\
}\
.ace_underline {\
text-decoration: underline;\
}\
.ace_bold {\
font-weight: bold;\
}\
.ace_nobold .ace_bold {\
font-weight: normal;\
}\
.ace_italic {\
font-style: italic;\
}\
.ace_error-marker {\
background-color: rgba(255, 0, 0,0.2);\
position: absolute;\
z-index: 9;\
}\
.ace_highlight-marker {\
background-color: rgba(255, 255, 0,0.2);\
position: absolute;\
z-index: 8;\
}\
.ace_br1 {border-top-left-radius    : 3px;}\
.ace_br2 {border-top-right-radius   : 3px;}\
.ace_br3 {border-top-left-radius    : 3px; border-top-right-radius:    3px;}\
.ace_br4 {border-bottom-right-radius: 3px;}\
.ace_br5 {border-top-left-radius    : 3px; border-bottom-right-radius: 3px;}\
.ace_br6 {border-top-right-radius   : 3px; border-bottom-right-radius: 3px;}\
.ace_br7 {border-top-left-radius    : 3px; border-top-right-radius:    3px; border-bottom-right-radius: 3px;}\
.ace_br8 {border-bottom-left-radius : 3px;}\
.ace_br9 {border-top-left-radius    : 3px; border-bottom-left-radius:  3px;}\
.ace_br10{border-top-right-radius   : 3px; border-bottom-left-radius:  3px;}\
.ace_br11{border-top-left-radius    : 3px; border-top-right-radius:    3px; border-bottom-left-radius:  3px;}\
.ace_br12{border-bottom-right-radius: 3px; border-bottom-left-radius:  3px;}\
.ace_br13{border-top-left-radius    : 3px; border-bottom-right-radius: 3px; border-bottom-left-radius:  3px;}\
.ace_br14{border-top-right-radius   : 3px; border-bottom-right-radius: 3px; border-bottom-left-radius:  3px;}\
.ace_br15{border-top-left-radius    : 3px; border-top-right-radius:    3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px;}\
.ace_text-input-ios {\
position: absolute !important;\
top: -100000px !important;\
left: -100000px !important;\
}\
";

dom.importCssString(editorCss, "ace_editor.css");

var VirtualRenderer = function(container, theme) {
    var _self = this;

    this.container = container || dom.createElement("div");
    this.$keepTextAreaAtCursor = !useragent.isOldIE;

    dom.addCssClass(this.container, "ace_editor");

    this.setTheme(theme);

    this.$gutter = dom.createElement("div");
    this.$gutter.className = "ace_gutter";
    this.container.appendChild(this.$gutter);
    this.$gutter.setAttribute("aria-hidden", true);

    this.scroller = dom.createElement("div");
    this.scroller.className = "ace_scroller";
    this.container.appendChild(this.scroller);

    this.content = dom.createElement("div");
    this.content.className = "ace_content";
    this.scroller.appendChild(this.content);

    this.$gutterLayer = new GutterLayer(this.$gutter);
    this.$gutterLayer.on("changeGutterWidth", this.onGutterResize.bind(this));

    this.$markerBack = new MarkerLayer(this.content);

    var textLayer = this.$textLayer = new TextLayer(this.content);
    this.canvas = textLayer.element;

    this.$markerFront = new MarkerLayer(this.content);

    this.$cursorLayer = new CursorLayer(this.content);
    this.$horizScroll = false;
    this.$vScroll = false;

    this.scrollBar = 
    this.scrollBarV = new VScrollBar(this.container, this);
    this.scrollBarH = new HScrollBar(this.container, this);
    this.scrollBarV.addEventListener("scroll", function(e) {
        if (!_self.$scrollAnimation)
            _self.session.setScrollTop(e.data - _self.scrollMargin.top);
    });
    this.scrollBarH.addEventListener("scroll", function(e) {
        if (!_self.$scrollAnimation)
            _self.session.setScrollLeft(e.data - _self.scrollMargin.left);
    });

    this.scrollTop = 0;
    this.scrollLeft = 0;

    this.cursorPos = {
        row : 0,
        column : 0
    };

    this.$fontMetrics = new FontMetrics(this.container);
    this.$textLayer.$setFontMetrics(this.$fontMetrics);
    this.$textLayer.addEventListener("changeCharacterSize", function(e) {
        _self.updateCharacterSize();
        _self.onResize(true, _self.gutterWidth, _self.$size.width, _self.$size.height);
        _self._signal("changeCharacterSize", e);
    });

    this.$size = {
        width: 0,
        height: 0,
        scrollerHeight: 0,
        scrollerWidth: 0,
        $dirty: true
    };

    this.layerConfig = {
        width : 1,
        padding : 0,
        firstRow : 0,
        firstRowScreen: 0,
        lastRow : 0,
        lineHeight : 0,
        characterWidth : 0,
        minHeight : 1,
        maxHeight : 1,
        offset : 0,
        height : 1,
        gutterOffset: 1
    };
    
    this.scrollMargin = {
        left: 0,
        right: 0,
        top: 0,
        bottom: 0,
        v: 0,
        h: 0
    };

    this.$loop = new RenderLoop(
        this.$renderChanges.bind(this),
        this.container.ownerDocument.defaultView
    );
    this.$loop.schedule(this.CHANGE_FULL);

    this.updateCharacterSize();
    this.setPadding(4);
    config.resetOptions(this);
    config._emit("renderer", this);
};

(function() {

    this.CHANGE_CURSOR = 1;
    this.CHANGE_MARKER = 2;
    this.CHANGE_GUTTER = 4;
    this.CHANGE_SCROLL = 8;
    this.CHANGE_LINES = 16;
    this.CHANGE_TEXT = 32;
    this.CHANGE_SIZE = 64;
    this.CHANGE_MARKER_BACK = 128;
    this.CHANGE_MARKER_FRONT = 256;
    this.CHANGE_FULL = 512;
    this.CHANGE_H_SCROLL = 1024;

    oop.implement(this, EventEmitter);

    this.updateCharacterSize = function() {
        if (this.$textLayer.allowBoldFonts != this.$allowBoldFonts) {
            this.$allowBoldFonts = this.$textLayer.allowBoldFonts;
            this.setStyle("ace_nobold", !this.$allowBoldFonts);
        }

        this.layerConfig.characterWidth =
        this.characterWidth = this.$textLayer.getCharacterWidth();
        this.layerConfig.lineHeight =
        this.lineHeight = this.$textLayer.getLineHeight();
        this.$updatePrintMargin();
    };
    this.setSession = function(session) {
        if (this.session)
            this.session.doc.off("changeNewLineMode", this.onChangeNewLineMode);
            
        this.session = session;
        if (session && this.scrollMargin.top && session.getScrollTop() <= 0)
            session.setScrollTop(-this.scrollMargin.top);

        this.$cursorLayer.setSession(session);
        this.$markerBack.setSession(session);
        this.$markerFront.setSession(session);
        this.$gutterLayer.setSession(session);
        this.$textLayer.setSession(session);
        if (!session)
            return;
        
        this.$loop.schedule(this.CHANGE_FULL);
        this.session.$setFontMetrics(this.$fontMetrics);
        this.scrollBarH.scrollLeft = this.scrollBarV.scrollTop = null;
        
        this.onChangeNewLineMode = this.onChangeNewLineMode.bind(this);
        this.onChangeNewLineMode();
        this.session.doc.on("changeNewLineMode", this.onChangeNewLineMode);
    };
    this.updateLines = function(firstRow, lastRow, force) {
        if (lastRow === undefined)
            lastRow = Infinity;

        if (!this.$changedLines) {
            this.$changedLines = {
                firstRow: firstRow,
                lastRow: lastRow
            };
        }
        else {
            if (this.$changedLines.firstRow > firstRow)
                this.$changedLines.firstRow = firstRow;

            if (this.$changedLines.lastRow < lastRow)
                this.$changedLines.lastRow = lastRow;
        }
        if (this.$changedLines.lastRow < this.layerConfig.firstRow) {
            if (force)
                this.$changedLines.lastRow = this.layerConfig.lastRow;
            else
                return;
        }
        if (this.$changedLines.firstRow > this.layerConfig.lastRow)
            return;
        this.$loop.schedule(this.CHANGE_LINES);
    };

    this.onChangeNewLineMode = function() {
        this.$loop.schedule(this.CHANGE_TEXT);
        this.$textLayer.$updateEolChar();
        this.session.$bidiHandler.setEolChar(this.$textLayer.EOL_CHAR);
    };
    
    this.onChangeTabSize = function() {
        this.$loop.schedule(this.CHANGE_TEXT | this.CHANGE_MARKER);
        this.$textLayer.onChangeTabSize();
    };
    this.updateText = function() {
        this.$loop.schedule(this.CHANGE_TEXT);
    };
    this.updateFull = function(force) {
        if (force)
            this.$renderChanges(this.CHANGE_FULL, true);
        else
            this.$loop.schedule(this.CHANGE_FULL);
    };
    this.updateFontSize = function() {
        this.$textLayer.checkForSizeChanges();
    };

    this.$changes = 0;
    this.$updateSizeAsync = function() {
        if (this.$loop.pending)
            this.$size.$dirty = true;
        else
            this.onResize();
    };
    this.onResize = function(force, gutterWidth, width, height) {
        if (this.resizing > 2)
            return;
        else if (this.resizing > 0)
            this.resizing++;
        else
            this.resizing = force ? 1 : 0;
        var el = this.container;
        if (!height)
            height = el.clientHeight || el.scrollHeight;
        if (!width)
            width = el.clientWidth || el.scrollWidth;
        var changes = this.$updateCachedSize(force, gutterWidth, width, height);

        
        if (!this.$size.scrollerHeight || (!width && !height))
            return this.resizing = 0;

        if (force)
            this.$gutterLayer.$padding = null;

        if (force)
            this.$renderChanges(changes | this.$changes, true);
        else
            this.$loop.schedule(changes | this.$changes);

        if (this.resizing)
            this.resizing = 0;
        this.scrollBarV.scrollLeft = this.scrollBarV.scrollTop = null;
    };
    
    this.$updateCachedSize = function(force, gutterWidth, width, height) {
        height -= (this.$extraHeight || 0);
        var changes = 0;
        var size = this.$size;
        var oldSize = {
            width: size.width,
            height: size.height,
            scrollerHeight: size.scrollerHeight,
            scrollerWidth: size.scrollerWidth
        };
        if (height && (force || size.height != height)) {
            size.height = height;
            changes |= this.CHANGE_SIZE;

            size.scrollerHeight = size.height;
            if (this.$horizScroll)
                size.scrollerHeight -= this.scrollBarH.getHeight();
            this.scrollBarV.element.style.bottom = this.scrollBarH.getHeight() + "px";

            changes = changes | this.CHANGE_SCROLL;
        }

        if (width && (force || size.width != width)) {
            changes |= this.CHANGE_SIZE;
            size.width = width;
            
            if (gutterWidth == null)
                gutterWidth = this.$showGutter ? this.$gutter.offsetWidth : 0;
            
            this.gutterWidth = gutterWidth;
            
            this.scrollBarH.element.style.left = 
            this.scroller.style.left = gutterWidth + "px";
            size.scrollerWidth = Math.max(0, width - gutterWidth - this.scrollBarV.getWidth());           
            
            this.scrollBarH.element.style.right = 
            this.scroller.style.right = this.scrollBarV.getWidth() + "px";
            this.scroller.style.bottom = this.scrollBarH.getHeight() + "px";

            if (this.session && this.session.getUseWrapMode() && this.adjustWrapLimit() || force)
                changes |= this.CHANGE_FULL;
        }
        
        size.$dirty = !width || !height;

        if (changes)
            this._signal("resize", oldSize);

        return changes;
    };

    this.onGutterResize = function() {
        var gutterWidth = this.$showGutter ? this.$gutter.offsetWidth : 0;
        if (gutterWidth != this.gutterWidth)
            this.$changes |= this.$updateCachedSize(true, gutterWidth, this.$size.width, this.$size.height);

        if (this.session.getUseWrapMode() && this.adjustWrapLimit()) {
            this.$loop.schedule(this.CHANGE_FULL);
        } else if (this.$size.$dirty) {
            this.$loop.schedule(this.CHANGE_FULL);
        } else {
            this.$computeLayerConfig();
            this.$loop.schedule(this.CHANGE_MARKER);
        }
    };
    this.adjustWrapLimit = function() {
        var availableWidth = this.$size.scrollerWidth - this.$padding * 2;
        var limit = Math.floor(availableWidth / this.characterWidth);
        return this.session.adjustWrapLimit(limit, this.$showPrintMargin && this.$printMarginColumn);
    };
    this.setAnimatedScroll = function(shouldAnimate){
        this.setOption("animatedScroll", shouldAnimate);
    };
    this.getAnimatedScroll = function() {
        return this.$animatedScroll;
    };
    this.setShowInvisibles = function(showInvisibles) {
        this.setOption("showInvisibles", showInvisibles);
        this.session.$bidiHandler.setShowInvisibles(showInvisibles);
    };
    this.getShowInvisibles = function() {
        return this.getOption("showInvisibles");
    };
    this.getDisplayIndentGuides = function() {
        return this.getOption("displayIndentGuides");
    };

    this.setDisplayIndentGuides = function(display) {
        this.setOption("displayIndentGuides", display);
    };
    this.setShowPrintMargin = function(showPrintMargin) {
        this.setOption("showPrintMargin", showPrintMargin);
    };
    this.getShowPrintMargin = function() {
        return this.getOption("showPrintMargin");
    };
    this.setPrintMarginColumn = function(showPrintMargin) {
        this.setOption("printMarginColumn", showPrintMargin);
    };
    this.getPrintMarginColumn = function() {
        return this.getOption("printMarginColumn");
    };
    this.getShowGutter = function(){
        return this.getOption("showGutter");
    };
    this.setShowGutter = function(show){
        return this.setOption("showGutter", show);
    };

    this.getFadeFoldWidgets = function(){
        return this.getOption("fadeFoldWidgets");
    };

    this.setFadeFoldWidgets = function(show) {
        this.setOption("fadeFoldWidgets", show);
    };

    this.setHighlightGutterLine = function(shouldHighlight) {
        this.setOption("highlightGutterLine", shouldHighlight);
    };

    this.getHighlightGutterLine = function() {
        return this.getOption("highlightGutterLine");
    };

    this.$updateGutterLineHighlight = function() {
        var pos = this.$cursorLayer.$pixelPos;
        var height = this.layerConfig.lineHeight;
        if (this.session.getUseWrapMode()) {
            var cursor = this.session.selection.getCursor();
            cursor.column = 0;
            pos = this.$cursorLayer.getPixelPosition(cursor, true);
            height *= this.session.getRowLength(cursor.row);
        }
        this.$gutterLineHighlight.style.top = pos.top - this.layerConfig.offset + "px";
        this.$gutterLineHighlight.style.height = height + "px";
    };

    this.$updatePrintMargin = function() {
        if (!this.$showPrintMargin && !this.$printMarginEl)
            return;

        if (!this.$printMarginEl) {
            var containerEl = dom.createElement("div");
            containerEl.className = "ace_layer ace_print-margin-layer";
            this.$printMarginEl = dom.createElement("div");
            this.$printMarginEl.className = "ace_print-margin";
            containerEl.appendChild(this.$printMarginEl);
            this.content.insertBefore(containerEl, this.content.firstChild);
        }

        var style = this.$printMarginEl.style;
        style.left = ((this.characterWidth * this.$printMarginColumn) + this.$padding) + "px";
        style.visibility = this.$showPrintMargin ? "visible" : "hidden";
        
        if (this.session && this.session.$wrap == -1)
            this.adjustWrapLimit();
    };
    this.getContainerElement = function() {
        return this.container;
    };
    this.getMouseEventTarget = function() {
        return this.scroller;
    };
    this.getTextAreaContainer = function() {
        return this.container;
    };
    this.$moveTextAreaToCursor = function() {
        if (!this.$keepTextAreaAtCursor)
            return;
        var config = this.layerConfig;
        var posTop = this.$cursorLayer.$pixelPos.top;
        var posLeft = this.$cursorLayer.$pixelPos.left;
        posTop -= config.offset;

        var style = this.textarea.style;
        var h = this.lineHeight;
        if (posTop < 0 || posTop > config.height - h) {
            style.top = style.left = "0";
            return;
        }

        var w = this.characterWidth;
        if (this.$composition) {
            var val = this.textarea.value.replace(/^\x01+/, "");
            w *= (this.session.$getStringScreenWidth(val)[0]+2);
            h += 2;
        }
        posLeft -= this.scrollLeft;
        if (posLeft > this.$size.scrollerWidth - w)
            posLeft = this.$size.scrollerWidth - w;

        posLeft += this.gutterWidth;
        style.height = h + "px";
        style.width = w + "px";
        style.left = Math.min(posLeft, this.$size.scrollerWidth - w) + "px";
        style.top = Math.min(posTop, this.$size.height - h) + "px";
    };
    this.getFirstVisibleRow = function() {
        return this.layerConfig.firstRow;
    };
    this.getFirstFullyVisibleRow = function() {
        return this.layerConfig.firstRow + (this.layerConfig.offset === 0 ? 0 : 1);
    };
    this.getLastFullyVisibleRow = function() {
        var config = this.layerConfig;
        var lastRow = config.lastRow;
        var top = this.session.documentToScreenRow(lastRow, 0) * config.lineHeight;
        if (top - this.session.getScrollTop() > config.height - config.lineHeight)
            return lastRow - 1;
        return lastRow;
    };
    this.getLastVisibleRow = function() {
        return this.layerConfig.lastRow;
    };

    this.$padding = null;
    this.setPadding = function(padding) {
        this.$padding = padding;
        this.$textLayer.setPadding(padding);
        this.$cursorLayer.setPadding(padding);
        this.$markerFront.setPadding(padding);
        this.$markerBack.setPadding(padding);
        this.$loop.schedule(this.CHANGE_FULL);
        this.$updatePrintMargin();
    };
    
    this.setScrollMargin = function(top, bottom, left, right) {
        var sm = this.scrollMargin;
        sm.top = top|0;
        sm.bottom = bottom|0;
        sm.right = right|0;
        sm.left = left|0;
        sm.v = sm.top + sm.bottom;
        sm.h = sm.left + sm.right;
        if (sm.top && this.scrollTop <= 0 && this.session)
            this.session.setScrollTop(-sm.top);
        this.updateFull();
    };
    this.getHScrollBarAlwaysVisible = function() {
        return this.$hScrollBarAlwaysVisible;
    };
    this.setHScrollBarAlwaysVisible = function(alwaysVisible) {
        this.setOption("hScrollBarAlwaysVisible", alwaysVisible);
    };
    this.getVScrollBarAlwaysVisible = function() {
        return this.$vScrollBarAlwaysVisible;
    };
    this.setVScrollBarAlwaysVisible = function(alwaysVisible) {
        this.setOption("vScrollBarAlwaysVisible", alwaysVisible);
    };

    this.$updateScrollBarV = function() {
        var scrollHeight = this.layerConfig.maxHeight;
        var scrollerHeight = this.$size.scrollerHeight;
        if (!this.$maxLines && this.$scrollPastEnd) {
            scrollHeight -= (scrollerHeight - this.lineHeight) * this.$scrollPastEnd;
            if (this.scrollTop > scrollHeight - scrollerHeight) {
                scrollHeight = this.scrollTop + scrollerHeight;
                this.scrollBarV.scrollTop = null;
            }
        }
        this.scrollBarV.setScrollHeight(scrollHeight + this.scrollMargin.v);
        this.scrollBarV.setScrollTop(this.scrollTop + this.scrollMargin.top);
    };
    this.$updateScrollBarH = function() {
        this.scrollBarH.setScrollWidth(this.layerConfig.width + 2 * this.$padding + this.scrollMargin.h);
        this.scrollBarH.setScrollLeft(this.scrollLeft + this.scrollMargin.left);
    };
    
    this.$frozen = false;
    this.freeze = function() {
        this.$frozen = true;
    };
    
    this.unfreeze = function() {
        this.$frozen = false;
    };

    this.$renderChanges = function(changes, force) {
        if (this.$changes) {
            changes |= this.$changes;
            this.$changes = 0;
        }
        if ((!this.session || !this.container.offsetWidth || this.$frozen) || (!changes && !force)) {
            this.$changes |= changes;
            return; 
        } 
        if (this.$size.$dirty) {
            this.$changes |= changes;
            return this.onResize(true);
        }
        if (!this.lineHeight) {
            this.$textLayer.checkForSizeChanges();
        }
        
        this._signal("beforeRender");

        if (this.session && this.session.$bidiHandler)
            this.session.$bidiHandler.updateCharacterWidths(this.$fontMetrics);

        var config = this.layerConfig;
        if (changes & this.CHANGE_FULL ||
            changes & this.CHANGE_SIZE ||
            changes & this.CHANGE_TEXT ||
            changes & this.CHANGE_LINES ||
            changes & this.CHANGE_SCROLL ||
            changes & this.CHANGE_H_SCROLL
        ) {
            changes |= this.$computeLayerConfig();
            if (config.firstRow != this.layerConfig.firstRow && config.firstRowScreen == this.layerConfig.firstRowScreen) {
                var st = this.scrollTop + (config.firstRow - this.layerConfig.firstRow) * this.lineHeight;
                if (st > 0) {
                    this.scrollTop = st;
                    changes = changes | this.CHANGE_SCROLL;
                    changes |= this.$computeLayerConfig();
                }
            }
            config = this.layerConfig;
            this.$updateScrollBarV();
            if (changes & this.CHANGE_H_SCROLL)
                this.$updateScrollBarH();
            this.$gutterLayer.element.style.marginTop = (-config.offset) + "px";
            this.content.style.marginTop = (-config.offset) + "px";
            this.content.style.width = config.width + 2 * this.$padding + "px";
            this.content.style.height = config.minHeight + "px";
        }
        if (changes & this.CHANGE_H_SCROLL) {
            this.content.style.marginLeft = -this.scrollLeft + "px";
            this.scroller.className = this.scrollLeft <= 0 ? "ace_scroller" : "ace_scroller ace_scroll-left";
        }
        if (changes & this.CHANGE_FULL) {
            this.$textLayer.update(config);
            if (this.$showGutter)
                this.$gutterLayer.update(config);
            this.$markerBack.update(config);
            this.$markerFront.update(config);
            this.$cursorLayer.update(config);
            this.$moveTextAreaToCursor();
            this.$highlightGutterLine && this.$updateGutterLineHighlight();
            this._signal("afterRender");
            return;
        }
        if (changes & this.CHANGE_SCROLL) {
            if (changes & this.CHANGE_TEXT || changes & this.CHANGE_LINES)
                this.$textLayer.update(config);
            else
                this.$textLayer.scrollLines(config);

            if (this.$showGutter)
                this.$gutterLayer.update(config);
            this.$markerBack.update(config);
            this.$markerFront.update(config);
            this.$cursorLayer.update(config);
            this.$highlightGutterLine && this.$updateGutterLineHighlight();
            this.$moveTextAreaToCursor();
            this._signal("afterRender");
            return;
        }

        if (changes & this.CHANGE_TEXT) {
            this.$textLayer.update(config);
            if (this.$showGutter)
                this.$gutterLayer.update(config);
        }
        else if (changes & this.CHANGE_LINES) {
            if (this.$updateLines() || (changes & this.CHANGE_GUTTER) && this.$showGutter)
                this.$gutterLayer.update(config);
        }
        else if (changes & this.CHANGE_TEXT || changes & this.CHANGE_GUTTER) {
            if (this.$showGutter)
                this.$gutterLayer.update(config);
        }

        if (changes & this.CHANGE_CURSOR) {
            this.$cursorLayer.update(config);
            this.$moveTextAreaToCursor();
            this.$highlightGutterLine && this.$updateGutterLineHighlight();
        }

        if (changes & (this.CHANGE_MARKER | this.CHANGE_MARKER_FRONT)) {
            this.$markerFront.update(config);
        }

        if (changes & (this.CHANGE_MARKER | this.CHANGE_MARKER_BACK)) {
            this.$markerBack.update(config);
        }

        this._signal("afterRender");
    };

    
    this.$autosize = function() {
        var height = this.session.getScreenLength() * this.lineHeight;
        var maxHeight = this.$maxLines * this.lineHeight;
        var desiredHeight = Math.min(maxHeight,
            Math.max((this.$minLines || 1) * this.lineHeight, height)
        ) + this.scrollMargin.v + (this.$extraHeight || 0);
        if (this.$horizScroll)
            desiredHeight += this.scrollBarH.getHeight();
        if (this.$maxPixelHeight && desiredHeight > this.$maxPixelHeight)
            desiredHeight = this.$maxPixelHeight;
        var vScroll = height > maxHeight;
        
        if (desiredHeight != this.desiredHeight ||
            this.$size.height != this.desiredHeight || vScroll != this.$vScroll) {
            if (vScroll != this.$vScroll) {
                this.$vScroll = vScroll;
                this.scrollBarV.setVisible(vScroll);
            }
            
            var w = this.container.clientWidth;
            this.container.style.height = desiredHeight + "px";
            this.$updateCachedSize(true, this.$gutterWidth, w, desiredHeight);
            this.desiredHeight = desiredHeight;
            
            this._signal("autosize");
        }
    };
    
    this.$computeLayerConfig = function() {
        var session = this.session;
        var size = this.$size;
        
        var hideScrollbars = size.height <= 2 * this.lineHeight;
        var screenLines = this.session.getScreenLength();
        var maxHeight = screenLines * this.lineHeight;

        var longestLine = this.$getLongestLine();
        
        var horizScroll = !hideScrollbars && (this.$hScrollBarAlwaysVisible ||
            size.scrollerWidth - longestLine - 2 * this.$padding < 0);

        var hScrollChanged = this.$horizScroll !== horizScroll;
        if (hScrollChanged) {
            this.$horizScroll = horizScroll;
            this.scrollBarH.setVisible(horizScroll);
        }
        var vScrollBefore = this.$vScroll; // autosize can change vscroll value in which case we need to update longestLine
        if (this.$maxLines && this.lineHeight > 1)
            this.$autosize();

        var offset = this.scrollTop % this.lineHeight;
        var minHeight = size.scrollerHeight + this.lineHeight;
        
        var scrollPastEnd = !this.$maxLines && this.$scrollPastEnd
            ? (size.scrollerHeight - this.lineHeight) * this.$scrollPastEnd
            : 0;
        maxHeight += scrollPastEnd;
        
        var sm = this.scrollMargin;
        this.session.setScrollTop(Math.max(-sm.top,
            Math.min(this.scrollTop, maxHeight - size.scrollerHeight + sm.bottom)));

        this.session.setScrollLeft(Math.max(-sm.left, Math.min(this.scrollLeft, 
            longestLine + 2 * this.$padding - size.scrollerWidth + sm.right)));
        
        var vScroll = !hideScrollbars && (this.$vScrollBarAlwaysVisible ||
            size.scrollerHeight - maxHeight + scrollPastEnd < 0 || this.scrollTop > sm.top);
        var vScrollChanged = vScrollBefore !== vScroll;
        if (vScrollChanged) {
            this.$vScroll = vScroll;
            this.scrollBarV.setVisible(vScroll);
        }

        var lineCount = Math.ceil(minHeight / this.lineHeight) - 1;
        var firstRow = Math.max(0, Math.round((this.scrollTop - offset) / this.lineHeight));
        var lastRow = firstRow + lineCount;
        var firstRowScreen, firstRowHeight;
        var lineHeight = this.lineHeight;
        firstRow = session.screenToDocumentRow(firstRow, 0);
        var foldLine = session.getFoldLine(firstRow);
        if (foldLine) {
            firstRow = foldLine.start.row;
        }

        firstRowScreen = session.documentToScreenRow(firstRow, 0);
        firstRowHeight = session.getRowLength(firstRow) * lineHeight;

        lastRow = Math.min(session.screenToDocumentRow(lastRow, 0), session.getLength() - 1);
        minHeight = size.scrollerHeight + session.getRowLength(lastRow) * lineHeight +
                                                firstRowHeight;

        offset = this.scrollTop - firstRowScreen * lineHeight;

        var changes = 0;
        if (this.layerConfig.width != longestLine) 
            changes = this.CHANGE_H_SCROLL;
        if (hScrollChanged || vScrollChanged) {
            changes = this.$updateCachedSize(true, this.gutterWidth, size.width, size.height);
            this._signal("scrollbarVisibilityChanged");
            if (vScrollChanged)
                longestLine = this.$getLongestLine();
        }
        
        this.layerConfig = {
            width : longestLine,
            padding : this.$padding,
            firstRow : firstRow,
            firstRowScreen: firstRowScreen,
            lastRow : lastRow,
            lineHeight : lineHeight,
            characterWidth : this.characterWidth,
            minHeight : minHeight,
            maxHeight : maxHeight,
            offset : offset,
            gutterOffset : lineHeight ? Math.max(0, Math.ceil((offset + size.height - size.scrollerHeight) / lineHeight)) : 0,
            height : this.$size.scrollerHeight
        };

        return changes;
    };

    this.$updateLines = function() {
        if (!this.$changedLines) return;
        var firstRow = this.$changedLines.firstRow;
        var lastRow = this.$changedLines.lastRow;
        this.$changedLines = null;

        var layerConfig = this.layerConfig;

        if (firstRow > layerConfig.lastRow + 1) { return; }
        if (lastRow < layerConfig.firstRow) { return; }
        if (lastRow === Infinity) {
            if (this.$showGutter)
                this.$gutterLayer.update(layerConfig);
            this.$textLayer.update(layerConfig);
            return;
        }
        this.$textLayer.updateLines(layerConfig, firstRow, lastRow);
        return true;
    };

    this.$getLongestLine = function() {
        var charCount = this.session.getScreenWidth();
        if (this.showInvisibles && !this.session.$useWrapMode)
            charCount += 1;

        return Math.max(this.$size.scrollerWidth - 2 * this.$padding, Math.round(charCount * this.characterWidth));
    };
    this.updateFrontMarkers = function() {
        this.$markerFront.setMarkers(this.session.getMarkers(true));
        this.$loop.schedule(this.CHANGE_MARKER_FRONT);
    };
    this.updateBackMarkers = function() {
        this.$markerBack.setMarkers(this.session.getMarkers());
        this.$loop.schedule(this.CHANGE_MARKER_BACK);
    };
    this.addGutterDecoration = function(row, className){
        this.$gutterLayer.addGutterDecoration(row, className);
    };
    this.removeGutterDecoration = function(row, className){
        this.$gutterLayer.removeGutterDecoration(row, className);
    };
    this.updateBreakpoints = function(rows) {
        this.$loop.schedule(this.CHANGE_GUTTER);
    };
    this.setAnnotations = function(annotations) {
        this.$gutterLayer.setAnnotations(annotations);
        this.$loop.schedule(this.CHANGE_GUTTER);
    };
    this.updateCursor = function() {
        this.$loop.schedule(this.CHANGE_CURSOR);
    };
    this.hideCursor = function() {
        this.$cursorLayer.hideCursor();
    };
    this.showCursor = function() {
        this.$cursorLayer.showCursor();
    };

    this.scrollSelectionIntoView = function(anchor, lead, offset) {
        this.scrollCursorIntoView(anchor, offset);
        this.scrollCursorIntoView(lead, offset);
    };
    this.scrollCursorIntoView = function(cursor, offset, $viewMargin) {
        if (this.$size.scrollerHeight === 0)
            return;

        var pos = this.$cursorLayer.getPixelPosition(cursor);

        var left = pos.left;
        var top = pos.top;
        
        var topMargin = $viewMargin && $viewMargin.top || 0;
        var bottomMargin = $viewMargin && $viewMargin.bottom || 0;
        
        var scrollTop = this.$scrollAnimation ? this.session.getScrollTop() : this.scrollTop;
        
        if (scrollTop + topMargin > top) {
            if (offset && scrollTop + topMargin > top + this.lineHeight)
                top -= offset * this.$size.scrollerHeight;
            if (top === 0)
                top = -this.scrollMargin.top;
            this.session.setScrollTop(top);
        } else if (scrollTop + this.$size.scrollerHeight - bottomMargin < top + this.lineHeight) {
            if (offset && scrollTop + this.$size.scrollerHeight - bottomMargin < top -  this.lineHeight)
                top += offset * this.$size.scrollerHeight;
            this.session.setScrollTop(top + this.lineHeight - this.$size.scrollerHeight);
        }

        var scrollLeft = this.scrollLeft;

        if (scrollLeft > left) {
            if (left < this.$padding + 2 * this.layerConfig.characterWidth)
                left = -this.scrollMargin.left;
            this.session.setScrollLeft(left);
        } else if (scrollLeft + this.$size.scrollerWidth < left + this.characterWidth) {
            this.session.setScrollLeft(Math.round(left + this.characterWidth - this.$size.scrollerWidth));
        } else if (scrollLeft <= this.$padding && left - scrollLeft < this.characterWidth) {
            this.session.setScrollLeft(0);
        }
    };
    this.getScrollTop = function() {
        return this.session.getScrollTop();
    };
    this.getScrollLeft = function() {
        return this.session.getScrollLeft();
    };
    this.getScrollTopRow = function() {
        return this.scrollTop / this.lineHeight;
    };
    this.getScrollBottomRow = function() {
        return Math.max(0, Math.floor((this.scrollTop + this.$size.scrollerHeight) / this.lineHeight) - 1);
    };
    this.scrollToRow = function(row) {
        this.session.setScrollTop(row * this.lineHeight);
    };

    this.alignCursor = function(cursor, alignment) {
        if (typeof cursor == "number")
            cursor = {row: cursor, column: 0};

        var pos = this.$cursorLayer.getPixelPosition(cursor);
        var h = this.$size.scrollerHeight - this.lineHeight;
        var offset = pos.top - h * (alignment || 0);

        this.session.setScrollTop(offset);
        return offset;
    };

    this.STEPS = 8;
    this.$calcSteps = function(fromValue, toValue){
        var i = 0;
        var l = this.STEPS;
        var steps = [];

        var func  = function(t, x_min, dx) {
            return dx * (Math.pow(t - 1, 3) + 1) + x_min;
        };

        for (i = 0; i < l; ++i)
            steps.push(func(i / this.STEPS, fromValue, toValue - fromValue));

        return steps;
    };
    this.scrollToLine = function(line, center, animate, callback) {
        var pos = this.$cursorLayer.getPixelPosition({row: line, column: 0});
        var offset = pos.top;
        if (center)
            offset -= this.$size.scrollerHeight / 2;

        var initialScroll = this.scrollTop;
        this.session.setScrollTop(offset);
        if (animate !== false)
            this.animateScrolling(initialScroll, callback);
    };

    this.animateScrolling = function(fromValue, callback) {
        var toValue = this.scrollTop;
        if (!this.$animatedScroll)
            return;
        var _self = this;
        
        if (fromValue == toValue)
            return;
        
        if (this.$scrollAnimation) {
            var oldSteps = this.$scrollAnimation.steps;
            if (oldSteps.length) {
                fromValue = oldSteps[0];
                if (fromValue == toValue)
                    return;
            }
        }
        
        var steps = _self.$calcSteps(fromValue, toValue);
        this.$scrollAnimation = {from: fromValue, to: toValue, steps: steps};

        clearInterval(this.$timer);

        _self.session.setScrollTop(steps.shift());
        _self.session.$scrollTop = toValue;
        this.$timer = setInterval(function() {
            if (steps.length) {
                _self.session.setScrollTop(steps.shift());
                _self.session.$scrollTop = toValue;
            } else if (toValue != null) {
                _self.session.$scrollTop = -1;
                _self.session.setScrollTop(toValue);
                toValue = null;
            } else {
                _self.$timer = clearInterval(_self.$timer);
                _self.$scrollAnimation = null;
                callback && callback();
            }
        }, 10);
    };
    this.scrollToY = function(scrollTop) {
        if (this.scrollTop !== scrollTop) {
            this.$loop.schedule(this.CHANGE_SCROLL);
            this.scrollTop = scrollTop;
        }
    };
    this.scrollToX = function(scrollLeft) {
        if (this.scrollLeft !== scrollLeft)
            this.scrollLeft = scrollLeft;
        this.$loop.schedule(this.CHANGE_H_SCROLL);
    };
    this.scrollTo = function(x, y) {
        this.session.setScrollTop(y);
        this.session.setScrollLeft(y);
    };
    this.scrollBy = function(deltaX, deltaY) {
        deltaY && this.session.setScrollTop(this.session.getScrollTop() + deltaY);
        deltaX && this.session.setScrollLeft(this.session.getScrollLeft() + deltaX);
    };
    this.isScrollableBy = function(deltaX, deltaY) {
        if (deltaY < 0 && this.session.getScrollTop() >= 1 - this.scrollMargin.top)
           return true;
        if (deltaY > 0 && this.session.getScrollTop() + this.$size.scrollerHeight
            - this.layerConfig.maxHeight < -1 + this.scrollMargin.bottom)
           return true;
        if (deltaX < 0 && this.session.getScrollLeft() >= 1 - this.scrollMargin.left)
            return true;
        if (deltaX > 0 && this.session.getScrollLeft() + this.$size.scrollerWidth
            - this.layerConfig.width < -1 + this.scrollMargin.right)
           return true;
    };

    this.pixelToScreenCoordinates = function(x, y) {
        var canvasPos = this.scroller.getBoundingClientRect();

        var offsetX = x + this.scrollLeft - canvasPos.left - this.$padding;
        var offset = offsetX / this.characterWidth;
        var row = Math.floor((y + this.scrollTop - canvasPos.top) / this.lineHeight);
        var col = Math.round(offset);

        return {row: row, column: col, side: offset - col > 0 ? 1 : -1, offsetX:  offsetX};
    };

    this.screenToTextCoordinates = function(x, y) {
        var canvasPos = this.scroller.getBoundingClientRect();
        var offsetX = x + this.scrollLeft - canvasPos.left - this.$padding;

        var col = Math.round(offsetX / this.characterWidth);

        var row = (y + this.scrollTop - canvasPos.top) / this.lineHeight;

        return this.session.screenToDocumentPosition(row, Math.max(col, 0), offsetX);
    };
    this.textToScreenCoordinates = function(row, column) {
        var canvasPos = this.scroller.getBoundingClientRect();
        var pos = this.session.documentToScreenPosition(row, column);

        var x = this.$padding + (this.session.$bidiHandler.isBidiRow(pos.row, row)
             ? this.session.$bidiHandler.getPosLeft(pos.column)
             : Math.round(pos.column * this.characterWidth));

        var y = pos.row * this.lineHeight;

        return {
            pageX: canvasPos.left + x - this.scrollLeft,
            pageY: canvasPos.top + y - this.scrollTop
        };
    };
    this.visualizeFocus = function() {
        dom.addCssClass(this.container, "ace_focus");
    };
    this.visualizeBlur = function() {
        dom.removeCssClass(this.container, "ace_focus");
    };
    this.showComposition = function(position) {
        if (!this.$composition)
            this.$composition = {
                keepTextAreaAtCursor: this.$keepTextAreaAtCursor,
                cssText: this.textarea.style.cssText
            };

        this.$keepTextAreaAtCursor = true;
        dom.addCssClass(this.textarea, "ace_composition");
        this.textarea.style.cssText = "";
        this.$moveTextAreaToCursor();
    };
    this.setCompositionText = function(text) {
        this.$moveTextAreaToCursor();
    };
    this.hideComposition = function() {
        if (!this.$composition)
            return;

        dom.removeCssClass(this.textarea, "ace_composition");
        this.$keepTextAreaAtCursor = this.$composition.keepTextAreaAtCursor;
        this.textarea.style.cssText = this.$composition.cssText;
        this.$composition = null;
    };
    this.setTheme = function(theme, cb) {
        var _self = this;
        this.$themeId = theme;
        _self._dispatchEvent('themeChange',{theme:theme});

        if (!theme || typeof theme == "string") {
            var moduleName = theme || this.$options.theme.initialValue;
            config.loadModule(["theme", moduleName], afterLoad);
        } else {
            afterLoad(theme);
        }

        function afterLoad(module) {
            if (_self.$themeId != theme)
                return cb && cb();
            if (!module || !module.cssClass)
                throw new Error("couldn't load module " + theme + " or it didn't call define");
            dom.importCssString(
                module.cssText,
                module.cssClass,
                _self.container.ownerDocument
            );

            if (_self.theme)
                dom.removeCssClass(_self.container, _self.theme.cssClass);

            var padding = "padding" in module ? module.padding 
                : "padding" in (_self.theme || {}) ? 4 : _self.$padding;
            if (_self.$padding && padding != _self.$padding)
                _self.setPadding(padding);
            _self.$theme = module.cssClass;

            _self.theme = module;
            dom.addCssClass(_self.container, module.cssClass);
            dom.setCssClass(_self.container, "ace_dark", module.isDark);
            if (_self.$size) {
                _self.$size.width = 0;
                _self.$updateSizeAsync();
            }

            _self._dispatchEvent('themeLoaded', {theme:module});
            cb && cb();
        }
    };
    this.getTheme = function() {
        return this.$themeId;
    };
    this.setStyle = function(style, include) {
        dom.setCssClass(this.container, style, include !== false);
    };
    this.unsetStyle = function(style) {
        dom.removeCssClass(this.container, style);
    };
    
    this.setCursorStyle = function(style) {
        if (this.scroller.style.cursor != style)
            this.scroller.style.cursor = style;
    };
    this.setMouseCursor = function(cursorStyle) {
        this.scroller.style.cursor = cursorStyle;
    };
    this.destroy = function() {
        this.$textLayer.destroy();
        this.$cursorLayer.destroy();
    };

}).call(VirtualRenderer.prototype);


config.defineOptions(VirtualRenderer.prototype, "renderer", {
    animatedScroll: {initialValue: false},
    showInvisibles: {
        set: function(value) {
            if (this.$textLayer.setShowInvisibles(value))
                this.$loop.schedule(this.CHANGE_TEXT);
        },
        initialValue: false
    },
    showPrintMargin: {
        set: function() { this.$updatePrintMargin(); },
        initialValue: true
    },
    printMarginColumn: {
        set: function() { this.$updatePrintMargin(); },
        initialValue: 80
    },
    printMargin: {
        set: function(val) {
            if (typeof val == "number")
                this.$printMarginColumn = val;
            this.$showPrintMargin = !!val;
            this.$updatePrintMargin();
        },
        get: function() {
            return this.$showPrintMargin && this.$printMarginColumn; 
        }
    },
    showGutter: {
        set: function(show){
            this.$gutter.style.display = show ? "block" : "none";
            this.$loop.schedule(this.CHANGE_FULL);
            this.onGutterResize();
        },
        initialValue: true
    },
    fadeFoldWidgets: {
        set: function(show) {
            dom.setCssClass(this.$gutter, "ace_fade-fold-widgets", show);
        },
        initialValue: false
    },
    showFoldWidgets: {
        set: function(show) {this.$gutterLayer.setShowFoldWidgets(show);},
        initialValue: true
    },
    showLineNumbers: {
        set: function(show) {
            this.$gutterLayer.setShowLineNumbers(show);
            this.$loop.schedule(this.CHANGE_GUTTER);
        },
        initialValue: true
    },
    displayIndentGuides: {
        set: function(show) {
            if (this.$textLayer.setDisplayIndentGuides(show))
                this.$loop.schedule(this.CHANGE_TEXT);
        },
        initialValue: true
    },
    highlightGutterLine: {
        set: function(shouldHighlight) {
            if (!this.$gutterLineHighlight) {
                this.$gutterLineHighlight = dom.createElement("div");
                this.$gutterLineHighlight.className = "ace_gutter-active-line";
                this.$gutter.appendChild(this.$gutterLineHighlight);
                return;
            }

            this.$gutterLineHighlight.style.display = shouldHighlight ? "" : "none";
            if (this.$cursorLayer.$pixelPos)
                this.$updateGutterLineHighlight();
        },
        initialValue: false,
        value: true
    },
    hScrollBarAlwaysVisible: {
        set: function(val) {
            if (!this.$hScrollBarAlwaysVisible || !this.$horizScroll)
                this.$loop.schedule(this.CHANGE_SCROLL);
        },
        initialValue: false
    },
    vScrollBarAlwaysVisible: {
        set: function(val) {
            if (!this.$vScrollBarAlwaysVisible || !this.$vScroll)
                this.$loop.schedule(this.CHANGE_SCROLL);
        },
        initialValue: false
    },
    fontSize:  {
        set: function(size) {
            if (typeof size == "number")
                size = size + "px";
            this.container.style.fontSize = size;
            this.updateFontSize();
        },
        initialValue: 12
    },
    fontFamily: {
        set: function(name) {
            this.container.style.fontFamily = name;
            this.updateFontSize();
        }
    },
    maxLines: {
        set: function(val) {
            this.updateFull();
        }
    },
    minLines: {
        set: function(val) {
            this.updateFull();
        }
    },
    maxPixelHeight: {
        set: function(val) {
            this.updateFull();
        },
        initialValue: 0
    },
    scrollPastEnd: {
        set: function(val) {
            val = +val || 0;
            if (this.$scrollPastEnd == val)
                return;
            this.$scrollPastEnd = val;
            this.$loop.schedule(this.CHANGE_SCROLL);
        },
        initialValue: 0,
        handlesSet: true
    },
    fixedWidthGutter: {
        set: function(val) {
            this.$gutterLayer.$fixedWidth = !!val;
            this.$loop.schedule(this.CHANGE_GUTTER);
        }
    },
    theme: {
        set: function(val) { this.setTheme(val); },
        get: function() { return this.$themeId || this.theme; },
        initialValue: "./theme/textmate",
        handlesSet: true
    }
});

exports.VirtualRenderer = VirtualRenderer;
});

ace.define("ace/worker/worker_client",["require","exports","module","ace/lib/oop","ace/lib/net","ace/lib/event_emitter","ace/config"], function(acequire, exports, module) {
"use strict";

var oop = acequire("../lib/oop");
var net = acequire("../lib/net");
var EventEmitter = acequire("../lib/event_emitter").EventEmitter;
var config = acequire("../config");

function $workerBlob(workerUrl, mod) {
    var script = mod.src;"importScripts('" + net.qualifyURL(workerUrl) + "');";
    try {
        return new Blob([script], {"type": "application/javascript"});
    } catch (e) { // Backwards-compatibility
        var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder;
        var blobBuilder = new BlobBuilder();
        blobBuilder.append(script);
        return blobBuilder.getBlob("application/javascript");
    }
}

function createWorker(workerUrl, mod) {
    var blob = $workerBlob(workerUrl, mod);
    var URL = window.URL || window.webkitURL;
    var blobURL = URL.createObjectURL(blob);
    return new Worker(blobURL);
}

var WorkerClient = function(topLevelNamespaces, mod, classname, workerUrl, importScripts) {
    this.$sendDeltaQueue = this.$sendDeltaQueue.bind(this);
    this.changeListener = this.changeListener.bind(this);
    this.onMessage = this.onMessage.bind(this);
    if (acequire.nameToUrl && !acequire.toUrl)
        acequire.toUrl = acequire.nameToUrl;
    
    if (config.get("packaged") || !acequire.toUrl) {
        workerUrl = workerUrl || config.moduleUrl(mod.id, "worker");
    } else {
        var normalizePath = this.$normalizePath;
        workerUrl = workerUrl || normalizePath(acequire.toUrl("ace/worker/worker.js", null, "_"));

        var tlns = {};
        topLevelNamespaces.forEach(function(ns) {
            tlns[ns] = normalizePath(acequire.toUrl(ns, null, "_").replace(/(\.js)?(\?.*)?$/, ""));
        });
    }

    this.$worker = createWorker(workerUrl, mod);
    if (importScripts) {
        this.send("importScripts", importScripts);
    }
    this.$worker.postMessage({
        init : true,
        tlns : tlns,
        module : mod.id,
        classname : classname
    });

    this.callbackId = 1;
    this.callbacks = {};

    this.$worker.onmessage = this.onMessage;
};

(function(){

    oop.implement(this, EventEmitter);

    this.onMessage = function(e) {
        var msg = e.data;
        switch (msg.type) {
            case "event":
                this._signal(msg.name, {data: msg.data});
                break;
            case "call":
                var callback = this.callbacks[msg.id];
                if (callback) {
                    callback(msg.data);
                    delete this.callbacks[msg.id];
                }
                break;
            case "error":
                this.reportError(msg.data);
                break;
            case "log":
                window.console && console.log && console.log.apply(console, msg.data);
                break;
        }
    };
    
    this.reportError = function(err) {
        window.console && console.error && console.error(err);
    };

    this.$normalizePath = function(path) {
        return net.qualifyURL(path);
    };

    this.terminate = function() {
        this._signal("terminate", {});
        this.deltaQueue = null;
        this.$worker.terminate();
        this.$worker = null;
        if (this.$doc)
            this.$doc.off("change", this.changeListener);
        this.$doc = null;
    };

    this.send = function(cmd, args) {
        this.$worker.postMessage({command: cmd, args: args});
    };

    this.call = function(cmd, args, callback) {
        if (callback) {
            var id = this.callbackId++;
            this.callbacks[id] = callback;
            args.push(id);
        }
        this.send(cmd, args);
    };

    this.emit = function(event, data) {
        try {
            this.$worker.postMessage({event: event, data: {data: data.data}});
        }
        catch(ex) {
            console.error(ex.stack);
        }
    };

    this.attachToDocument = function(doc) {
        if (this.$doc)
            this.terminate();

        this.$doc = doc;
        this.call("setValue", [doc.getValue()]);
        doc.on("change", this.changeListener);
    };

    this.changeListener = function(delta) {
        if (!this.deltaQueue) {
            this.deltaQueue = [];
            setTimeout(this.$sendDeltaQueue, 0);
        }
        if (delta.action == "insert")
            this.deltaQueue.push(delta.start, delta.lines);
        else
            this.deltaQueue.push(delta.start, delta.end);
    };

    this.$sendDeltaQueue = function() {
        var q = this.deltaQueue;
        if (!q) return;
        this.deltaQueue = null;
        if (q.length > 50 && q.length > this.$doc.getLength() >> 1) {
            this.call("setValue", [this.$doc.getValue()]);
        } else
            this.emit("change", {data: q});
    };

}).call(WorkerClient.prototype);


var UIWorkerClient = function(topLevelNamespaces, mod, classname) {
    this.$sendDeltaQueue = this.$sendDeltaQueue.bind(this);
    this.changeListener = this.changeListener.bind(this);
    this.callbackId = 1;
    this.callbacks = {};
    this.messageBuffer = [];

    var main = null;
    var emitSync = false;
    var sender = Object.create(EventEmitter);
    var _self = this;

    this.$worker = {};
    this.$worker.terminate = function() {};
    this.$worker.postMessage = function(e) {
        _self.messageBuffer.push(e);
        if (main) {
            if (emitSync)
                setTimeout(processNext);
            else
                processNext();
        }
    };
    this.setEmitSync = function(val) { emitSync = val; };

    var processNext = function() {
        var msg = _self.messageBuffer.shift();
        if (msg.command)
            main[msg.command].apply(main, msg.args);
        else if (msg.event)
            sender._signal(msg.event, msg.data);
    };

    sender.postMessage = function(msg) {
        _self.onMessage({data: msg});
    };
    sender.callback = function(data, callbackId) {
        this.postMessage({type: "call", id: callbackId, data: data});
    };
    sender.emit = function(name, data) {
        this.postMessage({type: "event", name: name, data: data});
    };

    config.loadModule(["worker", mod], function(Main) {
        main = new Main[classname](sender);
        while (_self.messageBuffer.length)
            processNext();
    });
};

UIWorkerClient.prototype = WorkerClient.prototype;

exports.UIWorkerClient = UIWorkerClient;
exports.WorkerClient = WorkerClient;
exports.createWorker = createWorker;


});

ace.define("ace/placeholder",["require","exports","module","ace/range","ace/lib/event_emitter","ace/lib/oop"], function(acequire, exports, module) {
"use strict";

var Range = acequire("./range").Range;
var EventEmitter = acequire("./lib/event_emitter").EventEmitter;
var oop = acequire("./lib/oop");

var PlaceHolder = function(session, length, pos, others, mainClass, othersClass) {
    var _self = this;
    this.length = length;
    this.session = session;
    this.doc = session.getDocument();
    this.mainClass = mainClass;
    this.othersClass = othersClass;
    this.$onUpdate = this.onUpdate.bind(this);
    this.doc.on("change", this.$onUpdate);
    this.$others = others;
    
    this.$onCursorChange = function() {
        setTimeout(function() {
            _self.onCursorChange();
        });
    };
    
    this.$pos = pos;
    var undoStack = session.getUndoManager().$undoStack || session.getUndoManager().$undostack || {length: -1};
    this.$undoStackDepth = undoStack.length;
    this.setup();

    session.selection.on("changeCursor", this.$onCursorChange);
};

(function() {

    oop.implement(this, EventEmitter);
    this.setup = function() {
        var _self = this;
        var doc = this.doc;
        var session = this.session;
        
        this.selectionBefore = session.selection.toJSON();
        if (session.selection.inMultiSelectMode)
            session.selection.toSingleRange();

        this.pos = doc.createAnchor(this.$pos.row, this.$pos.column);
        var pos = this.pos;
        pos.$insertRight = true;
        pos.detach();
        pos.markerId = session.addMarker(new Range(pos.row, pos.column, pos.row, pos.column + this.length), this.mainClass, null, false);
        this.others = [];
        this.$others.forEach(function(other) {
            var anchor = doc.createAnchor(other.row, other.column);
            anchor.$insertRight = true;
            anchor.detach();
            _self.others.push(anchor);
        });
        session.setUndoSelect(false);
    };
    this.showOtherMarkers = function() {
        if (this.othersActive) return;
        var session = this.session;
        var _self = this;
        this.othersActive = true;
        this.others.forEach(function(anchor) {
            anchor.markerId = session.addMarker(new Range(anchor.row, anchor.column, anchor.row, anchor.column+_self.length), _self.othersClass, null, false);
        });
    };
    this.hideOtherMarkers = function() {
        if (!this.othersActive) return;
        this.othersActive = false;
        for (var i = 0; i < this.others.length; i++) {
            this.session.removeMarker(this.others[i].markerId);
        }
    };
    this.onUpdate = function(delta) {
        if (this.$updating)
            return this.updateAnchors(delta);
            
        var range = delta;
        if (range.start.row !== range.end.row) return;
        if (range.start.row !== this.pos.row) return;
        this.$updating = true;
        var lengthDiff = delta.action === "insert" ? range.end.column - range.start.column : range.start.column - range.end.column;
        var inMainRange = range.start.column >= this.pos.column && range.start.column <= this.pos.column + this.length + 1;
        var distanceFromStart = range.start.column - this.pos.column;
        
        this.updateAnchors(delta);
        
        if (inMainRange)
            this.length += lengthDiff;

        if (inMainRange && !this.session.$fromUndo) {
            if (delta.action === 'insert') {
                for (var i = this.others.length - 1; i >= 0; i--) {
                    var otherPos = this.others[i];
                    var newPos = {row: otherPos.row, column: otherPos.column + distanceFromStart};
                    this.doc.insertMergedLines(newPos, delta.lines);
                }
            } else if (delta.action === 'remove') {
                for (var i = this.others.length - 1; i >= 0; i--) {
                    var otherPos = this.others[i];
                    var newPos = {row: otherPos.row, column: otherPos.column + distanceFromStart};
                    this.doc.remove(new Range(newPos.row, newPos.column, newPos.row, newPos.column - lengthDiff));
                }
            }
        }
        
        this.$updating = false;
        this.updateMarkers();
    };
    
    this.updateAnchors = function(delta) {
        this.pos.onChange(delta);
        for (var i = this.others.length; i--;)
            this.others[i].onChange(delta);
        this.updateMarkers();
    };
    
    this.updateMarkers = function() {
        if (this.$updating)
            return;
        var _self = this;
        var session = this.session;
        var updateMarker = function(pos, className) {
            session.removeMarker(pos.markerId);
            pos.markerId = session.addMarker(new Range(pos.row, pos.column, pos.row, pos.column+_self.length), className, null, false);
        };
        updateMarker(this.pos, this.mainClass);
        for (var i = this.others.length; i--;)
            updateMarker(this.others[i], this.othersClass);
    };

    this.onCursorChange = function(event) {
        if (this.$updating || !this.session) return;
        var pos = this.session.selection.getCursor();
        if (pos.row === this.pos.row && pos.column >= this.pos.column && pos.column <= this.pos.column + this.length) {
            this.showOtherMarkers();
            this._emit("cursorEnter", event);
        } else {
            this.hideOtherMarkers();
            this._emit("cursorLeave", event);
        }
    };    
    this.detach = function() {
        this.session.removeMarker(this.pos && this.pos.markerId);
        this.hideOtherMarkers();
        this.doc.removeEventListener("change", this.$onUpdate);
        this.session.selection.removeEventListener("changeCursor", this.$onCursorChange);
        this.session.setUndoSelect(true);
        this.session = null;
    };
    this.cancel = function() {
        if (this.$undoStackDepth === -1)
            return;
        var undoManager = this.session.getUndoManager();
        var undosRequired = (undoManager.$undoStack || undoManager.$undostack).length - this.$undoStackDepth;
        for (var i = 0; i < undosRequired; i++) {
            undoManager.undo(true);
        }
        if (this.selectionBefore)
            this.session.selection.fromJSON(this.selectionBefore);
    };
}).call(PlaceHolder.prototype);


exports.PlaceHolder = PlaceHolder;
});

ace.define("ace/mouse/multi_select_handler",["require","exports","module","ace/lib/event","ace/lib/useragent"], function(acequire, exports, module) {

var event = acequire("../lib/event");
var useragent = acequire("../lib/useragent");
function isSamePoint(p1, p2) {
    return p1.row == p2.row && p1.column == p2.column;
}

function onMouseDown(e) {
    var ev = e.domEvent;
    var alt = ev.altKey;
    var shift = ev.shiftKey;
    var ctrl = ev.ctrlKey;
    var accel = e.getAccelKey();
    var button = e.getButton();
    
    if (ctrl && useragent.isMac)
        button = ev.button;

    if (e.editor.inMultiSelectMode && button == 2) {
        e.editor.textInput.onContextMenu(e.domEvent);
        return;
    }
    
    if (!ctrl && !alt && !accel) {
        if (button === 0 && e.editor.inMultiSelectMode)
            e.editor.exitMultiSelectMode();
        return;
    }
    
    if (button !== 0)
        return;

    var editor = e.editor;
    var selection = editor.selection;
    var isMultiSelect = editor.inMultiSelectMode;
    var pos = e.getDocumentPosition();
    var cursor = selection.getCursor();
    var inSelection = e.inSelection() || (selection.isEmpty() && isSamePoint(pos, cursor));

    var mouseX = e.x, mouseY = e.y;
    var onMouseSelection = function(e) {
        mouseX = e.clientX;
        mouseY = e.clientY;
    };
    
    var session = editor.session;
    var screenAnchor = editor.renderer.pixelToScreenCoordinates(mouseX, mouseY);
    var screenCursor = screenAnchor;
    
    var selectionMode;
    if (editor.$mouseHandler.$enableJumpToDef) {
        if (ctrl && alt || accel && alt)
            selectionMode = shift ? "block" : "add";
        else if (alt && editor.$blockSelectEnabled)
            selectionMode = "block";
    } else {
        if (accel && !alt) {
            selectionMode = "add";
            if (!isMultiSelect && shift)
                return;
        } else if (alt && editor.$blockSelectEnabled) {
            selectionMode = "block";
        }
    }
    
    if (selectionMode && useragent.isMac && ev.ctrlKey) {
        editor.$mouseHandler.cancelContextMenu();
    }

    if (selectionMode == "add") {
        if (!isMultiSelect && inSelection)
            return; // dragging

        if (!isMultiSelect) {
            var range = selection.toOrientedRange();
            editor.addSelectionMarker(range);
        }

        var oldRange = selection.rangeList.rangeAtPoint(pos);
        
        
        editor.$blockScrolling++;
        editor.inVirtualSelectionMode = true;
        
        if (shift) {
            oldRange = null;
            range = selection.ranges[0] || range;
            editor.removeSelectionMarker(range);
        }
        editor.once("mouseup", function() {
            var tmpSel = selection.toOrientedRange();

            if (oldRange && tmpSel.isEmpty() && isSamePoint(oldRange.cursor, tmpSel.cursor))
                selection.substractPoint(tmpSel.cursor);
            else {
                if (shift) {
                    selection.substractPoint(range.cursor);
                } else if (range) {
                    editor.removeSelectionMarker(range);
                    selection.addRange(range);
                }
                selection.addRange(tmpSel);
            }
            editor.$blockScrolling--;
            editor.inVirtualSelectionMode = false;
        });

    } else if (selectionMode == "block") {
        e.stop();
        editor.inVirtualSelectionMode = true;        
        var initialRange;
        var rectSel = [];
        var blockSelect = function() {
            var newCursor = editor.renderer.pixelToScreenCoordinates(mouseX, mouseY);
            var cursor = session.screenToDocumentPosition(newCursor.row, newCursor.column, newCursor.offsetX);

            if (isSamePoint(screenCursor, newCursor) && isSamePoint(cursor, selection.lead))
                return;
            screenCursor = newCursor;
            
            editor.$blockScrolling++;
            editor.selection.moveToPosition(cursor);
            editor.renderer.scrollCursorIntoView();

            editor.removeSelectionMarkers(rectSel);
            rectSel = selection.rectangularRangeBlock(screenCursor, screenAnchor);
            if (editor.$mouseHandler.$clickSelection && rectSel.length == 1 && rectSel[0].isEmpty())
                rectSel[0] = editor.$mouseHandler.$clickSelection.clone();
            rectSel.forEach(editor.addSelectionMarker, editor);
            editor.updateSelectionMarkers();
            editor.$blockScrolling--;
        };
        editor.$blockScrolling++;
        if (isMultiSelect && !accel) {
            selection.toSingleRange();
        } else if (!isMultiSelect && accel) {
            initialRange = selection.toOrientedRange();
            editor.addSelectionMarker(initialRange);
        }
        
        if (shift)
            screenAnchor = session.documentToScreenPosition(selection.lead);            
        else
            selection.moveToPosition(pos);
        editor.$blockScrolling--;
        
        screenCursor = {row: -1, column: -1};

        var onMouseSelectionEnd = function(e) {
            clearInterval(timerId);
            editor.removeSelectionMarkers(rectSel);
            if (!rectSel.length)
                rectSel = [selection.toOrientedRange()];
            editor.$blockScrolling++;
            if (initialRange) {
                editor.removeSelectionMarker(initialRange);
                selection.toSingleRange(initialRange);
            }
            for (var i = 0; i < rectSel.length; i++)
                selection.addRange(rectSel[i]);
            editor.inVirtualSelectionMode = false;
            editor.$mouseHandler.$clickSelection = null;
            editor.$blockScrolling--;
        };

        var onSelectionInterval = blockSelect;

        event.capture(editor.container, onMouseSelection, onMouseSelectionEnd);
        var timerId = setInterval(function() {onSelectionInterval();}, 20);

        return e.preventDefault();
    }
}


exports.onMouseDown = onMouseDown;

});

ace.define("ace/commands/multi_select_commands",["require","exports","module","ace/keyboard/hash_handler"], function(acequire, exports, module) {
exports.defaultCommands = [{
    name: "addCursorAbove",
    exec: function(editor) { editor.selectMoreLines(-1); },
    bindKey: {win: "Ctrl-Alt-Up", mac: "Ctrl-Alt-Up"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "addCursorBelow",
    exec: function(editor) { editor.selectMoreLines(1); },
    bindKey: {win: "Ctrl-Alt-Down", mac: "Ctrl-Alt-Down"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "addCursorAboveSkipCurrent",
    exec: function(editor) { editor.selectMoreLines(-1, true); },
    bindKey: {win: "Ctrl-Alt-Shift-Up", mac: "Ctrl-Alt-Shift-Up"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "addCursorBelowSkipCurrent",
    exec: function(editor) { editor.selectMoreLines(1, true); },
    bindKey: {win: "Ctrl-Alt-Shift-Down", mac: "Ctrl-Alt-Shift-Down"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectMoreBefore",
    exec: function(editor) { editor.selectMore(-1); },
    bindKey: {win: "Ctrl-Alt-Left", mac: "Ctrl-Alt-Left"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectMoreAfter",
    exec: function(editor) { editor.selectMore(1); },
    bindKey: {win: "Ctrl-Alt-Right", mac: "Ctrl-Alt-Right"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectNextBefore",
    exec: function(editor) { editor.selectMore(-1, true); },
    bindKey: {win: "Ctrl-Alt-Shift-Left", mac: "Ctrl-Alt-Shift-Left"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "selectNextAfter",
    exec: function(editor) { editor.selectMore(1, true); },
    bindKey: {win: "Ctrl-Alt-Shift-Right", mac: "Ctrl-Alt-Shift-Right"},
    scrollIntoView: "cursor",
    readOnly: true
}, {
    name: "splitIntoLines",
    exec: function(editor) { editor.multiSelect.splitIntoLines(); },
    bindKey: {win: "Ctrl-Alt-L", mac: "Ctrl-Alt-L"},
    readOnly: true
}, {
    name: "alignCursors",
    exec: function(editor) { editor.alignCursors(); },
    bindKey: {win: "Ctrl-Alt-A", mac: "Ctrl-Alt-A"},
    scrollIntoView: "cursor"
}, {
    name: "findAll",
    exec: function(editor) { editor.findAll(); },
    bindKey: {win: "Ctrl-Alt-K", mac: "Ctrl-Alt-G"},
    scrollIntoView: "cursor",
    readOnly: true
}];
exports.multiSelectCommands = [{
    name: "singleSelection",
    bindKey: "esc",
    exec: function(editor) { editor.exitMultiSelectMode(); },
    scrollIntoView: "cursor",
    readOnly: true,
    isAvailable: function(editor) {return editor && editor.inMultiSelectMode;}
}];

var HashHandler = acequire("../keyboard/hash_handler").HashHandler;
exports.keyboardHandler = new HashHandler(exports.multiSelectCommands);

});

ace.define("ace/multi_select",["require","exports","module","ace/range_list","ace/range","ace/selection","ace/mouse/multi_select_handler","ace/lib/event","ace/lib/lang","ace/commands/multi_select_commands","ace/search","ace/edit_session","ace/editor","ace/config"], function(acequire, exports, module) {

var RangeList = acequire("./range_list").RangeList;
var Range = acequire("./range").Range;
var Selection = acequire("./selection").Selection;
var onMouseDown = acequire("./mouse/multi_select_handler").onMouseDown;
var event = acequire("./lib/event");
var lang = acequire("./lib/lang");
var commands = acequire("./commands/multi_select_commands");
exports.commands = commands.defaultCommands.concat(commands.multiSelectCommands);
var Search = acequire("./search").Search;
var search = new Search();

function find(session, needle, dir) {
    search.$options.wrap = true;
    search.$options.needle = needle;
    search.$options.backwards = dir == -1;
    return search.find(session);
}
var EditSession = acequire("./edit_session").EditSession;
(function() {
    this.getSelectionMarkers = function() {
        return this.$selectionMarkers;
    };
}).call(EditSession.prototype);
(function() {
    this.ranges = null;
    this.rangeList = null;
    this.addRange = function(range, $blockChangeEvents) {
        if (!range)
            return;

        if (!this.inMultiSelectMode && this.rangeCount === 0) {
            var oldRange = this.toOrientedRange();
            this.rangeList.add(oldRange);
            this.rangeList.add(range);
            if (this.rangeList.ranges.length != 2) {
                this.rangeList.removeAll();
                return $blockChangeEvents || this.fromOrientedRange(range);
            }
            this.rangeList.removeAll();
            this.rangeList.add(oldRange);
            this.$onAddRange(oldRange);
        }

        if (!range.cursor)
            range.cursor = range.end;

        var removed = this.rangeList.add(range);

        this.$onAddRange(range);

        if (removed.length)
            this.$onRemoveRange(removed);

        if (this.rangeCount > 1 && !this.inMultiSelectMode) {
            this._signal("multiSelect");
            this.inMultiSelectMode = true;
            this.session.$undoSelect = false;
            this.rangeList.attach(this.session);
        }

        return $blockChangeEvents || this.fromOrientedRange(range);
    };

    this.toSingleRange = function(range) {
        range = range || this.ranges[0];
        var removed = this.rangeList.removeAll();
        if (removed.length)
            this.$onRemoveRange(removed);

        range && this.fromOrientedRange(range);
    };
    this.substractPoint = function(pos) {
        var removed = this.rangeList.substractPoint(pos);
        if (removed) {
            this.$onRemoveRange(removed);
            return removed[0];
        }
    };
    this.mergeOverlappingRanges = function() {
        var removed = this.rangeList.merge();
        if (removed.length)
            this.$onRemoveRange(removed);
        else if(this.ranges[0])
            this.fromOrientedRange(this.ranges[0]);
    };

    this.$onAddRange = function(range) {
        this.rangeCount = this.rangeList.ranges.length;
        this.ranges.unshift(range);
        this._signal("addRange", {range: range});
    };

    this.$onRemoveRange = function(removed) {
        this.rangeCount = this.rangeList.ranges.length;
        if (this.rangeCount == 1 && this.inMultiSelectMode) {
            var lastRange = this.rangeList.ranges.pop();
            removed.push(lastRange);
            this.rangeCount = 0;
        }

        for (var i = removed.length; i--; ) {
            var index = this.ranges.indexOf(removed[i]);
            this.ranges.splice(index, 1);
        }

        this._signal("removeRange", {ranges: removed});

        if (this.rangeCount === 0 && this.inMultiSelectMode) {
            this.inMultiSelectMode = false;
            this._signal("singleSelect");
            this.session.$undoSelect = true;
            this.rangeList.detach(this.session);
        }

        lastRange = lastRange || this.ranges[0];
        if (lastRange && !lastRange.isEqual(this.getRange()))
            this.fromOrientedRange(lastRange);
    };
    this.$initRangeList = function() {
        if (this.rangeList)
            return;

        this.rangeList = new RangeList();
        this.ranges = [];
        this.rangeCount = 0;
    };
    this.getAllRanges = function() {
        return this.rangeCount ? this.rangeList.ranges.concat() : [this.getRange()];
    };

    this.splitIntoLines = function () {
        if (this.rangeCount > 1) {
            var ranges = this.rangeList.ranges;
            var lastRange = ranges[ranges.length - 1];
            var range = Range.fromPoints(ranges[0].start, lastRange.end);

            this.toSingleRange();
            this.setSelectionRange(range, lastRange.cursor == lastRange.start);
        } else {
            var range = this.getRange();
            var isBackwards = this.isBackwards();
            var startRow = range.start.row;
            var endRow = range.end.row;
            if (startRow == endRow) {
                if (isBackwards)
                    var start = range.end, end = range.start;
                else
                    var start = range.start, end = range.end;
                
                this.addRange(Range.fromPoints(end, end));
                this.addRange(Range.fromPoints(start, start));
                return;
            }

            var rectSel = [];
            var r = this.getLineRange(startRow, true);
            r.start.column = range.start.column;
            rectSel.push(r);

            for (var i = startRow + 1; i < endRow; i++)
                rectSel.push(this.getLineRange(i, true));

            r = this.getLineRange(endRow, true);
            r.end.column = range.end.column;
            rectSel.push(r);

            rectSel.forEach(this.addRange, this);
        }
    };
    this.toggleBlockSelection = function () {
        if (this.rangeCount > 1) {
            var ranges = this.rangeList.ranges;
            var lastRange = ranges[ranges.length - 1];
            var range = Range.fromPoints(ranges[0].start, lastRange.end);

            this.toSingleRange();
            this.setSelectionRange(range, lastRange.cursor == lastRange.start);
        } else {
            var cursor = this.session.documentToScreenPosition(this.selectionLead);
            var anchor = this.session.documentToScreenPosition(this.selectionAnchor);

            var rectSel = this.rectangularRangeBlock(cursor, anchor);
            rectSel.forEach(this.addRange, this);
        }
    };
    this.rectangularRangeBlock = function(screenCursor, screenAnchor, includeEmptyLines) {
        var rectSel = [];

        var xBackwards = screenCursor.column < screenAnchor.column;
        if (xBackwards) {
            var startColumn = screenCursor.column;
            var endColumn = screenAnchor.column;
            var startOffsetX = screenCursor.offsetX;
            var endOffsetX = screenAnchor.offsetX;
        } else {
            var startColumn = screenAnchor.column;
            var endColumn = screenCursor.column;
            var startOffsetX = screenAnchor.offsetX;
            var endOffsetX = screenCursor.offsetX;
        }

        var yBackwards = screenCursor.row < screenAnchor.row;
        if (yBackwards) {
            var startRow = screenCursor.row;
            var endRow = screenAnchor.row;
        } else {
            var startRow = screenAnchor.row;
            var endRow = screenCursor.row;
        }

        if (startColumn < 0)
            startColumn = 0;
        if (startRow < 0)
            startRow = 0;

        if (startRow == endRow)
            includeEmptyLines = true;

        for (var row = startRow; row <= endRow; row++) {
            var range = Range.fromPoints(
                this.session.screenToDocumentPosition(row, startColumn, startOffsetX),
                this.session.screenToDocumentPosition(row, endColumn, endOffsetX)
            );
            if (range.isEmpty()) {
                if (docEnd && isSamePoint(range.end, docEnd))
                    break;
                var docEnd = range.end;
            }
            range.cursor = xBackwards ? range.start : range.end;
            rectSel.push(range);
        }

        if (yBackwards)
            rectSel.reverse();

        if (!includeEmptyLines) {
            var end = rectSel.length - 1;
            while (rectSel[end].isEmpty() && end > 0)
                end--;
            if (end > 0) {
                var start = 0;
                while (rectSel[start].isEmpty())
                    start++;
            }
            for (var i = end; i >= start; i--) {
                if (rectSel[i].isEmpty())
                    rectSel.splice(i, 1);
            }
        }

        return rectSel;
    };
}).call(Selection.prototype);
var Editor = acequire("./editor").Editor;
(function() {
    this.updateSelectionMarkers = function() {
        this.renderer.updateCursor();
        this.renderer.updateBackMarkers();
    };
    this.addSelectionMarker = function(orientedRange) {
        if (!orientedRange.cursor)
            orientedRange.cursor = orientedRange.end;

        var style = this.getSelectionStyle();
        orientedRange.marker = this.session.addMarker(orientedRange, "ace_selection", style);

        this.session.$selectionMarkers.push(orientedRange);
        this.session.selectionMarkerCount = this.session.$selectionMarkers.length;
        return orientedRange;
    };
    this.removeSelectionMarker = function(range) {
        if (!range.marker)
            return;
        this.session.removeMarker(range.marker);
        var index = this.session.$selectionMarkers.indexOf(range);
        if (index != -1)
            this.session.$selectionMarkers.splice(index, 1);
        this.session.selectionMarkerCount = this.session.$selectionMarkers.length;
    };

    this.removeSelectionMarkers = function(ranges) {
        var markerList = this.session.$selectionMarkers;
        for (var i = ranges.length; i--; ) {
            var range = ranges[i];
            if (!range.marker)
                continue;
            this.session.removeMarker(range.marker);
            var index = markerList.indexOf(range);
            if (index != -1)
                markerList.splice(index, 1);
        }
        this.session.selectionMarkerCount = markerList.length;
    };

    this.$onAddRange = function(e) {
        this.addSelectionMarker(e.range);
        this.renderer.updateCursor();
        this.renderer.updateBackMarkers();
    };

    this.$onRemoveRange = function(e) {
        this.removeSelectionMarkers(e.ranges);
        this.renderer.updateCursor();
        this.renderer.updateBackMarkers();
    };

    this.$onMultiSelect = function(e) {
        if (this.inMultiSelectMode)
            return;
        this.inMultiSelectMode = true;

        this.setStyle("ace_multiselect");
        this.keyBinding.addKeyboardHandler(commands.keyboardHandler);
        this.commands.setDefaultHandler("exec", this.$onMultiSelectExec);

        this.renderer.updateCursor();
        this.renderer.updateBackMarkers();
    };

    this.$onSingleSelect = function(e) {
        if (this.session.multiSelect.inVirtualMode)
            return;
        this.inMultiSelectMode = false;

        this.unsetStyle("ace_multiselect");
        this.keyBinding.removeKeyboardHandler(commands.keyboardHandler);

        this.commands.removeDefaultHandler("exec", this.$onMultiSelectExec);
        this.renderer.updateCursor();
        this.renderer.updateBackMarkers();
        this._emit("changeSelection");
    };

    this.$onMultiSelectExec = function(e) {
        var command = e.command;
        var editor = e.editor;
        if (!editor.multiSelect)
            return;
        if (!command.multiSelectAction) {
            var result = command.exec(editor, e.args || {});
            editor.multiSelect.addRange(editor.multiSelect.toOrientedRange());
            editor.multiSelect.mergeOverlappingRanges();
        } else if (command.multiSelectAction == "forEach") {
            result = editor.forEachSelection(command, e.args);
        } else if (command.multiSelectAction == "forEachLine") {
            result = editor.forEachSelection(command, e.args, true);
        } else if (command.multiSelectAction == "single") {
            editor.exitMultiSelectMode();
            result = command.exec(editor, e.args || {});
        } else {
            result = command.multiSelectAction(editor, e.args || {});
        }
        return result;
    }; 
    this.forEachSelection = function(cmd, args, options) {
        if (this.inVirtualSelectionMode)
            return;
        var keepOrder = options && options.keepOrder;
        var $byLines = options == true || options && options.$byLines;
        var session = this.session;
        var selection = this.selection;
        var rangeList = selection.rangeList;
        var ranges = (keepOrder ? selection : rangeList).ranges;
        var result;
        
        if (!ranges.length)
            return cmd.exec ? cmd.exec(this, args || {}) : cmd(this, args || {});
        
        var reg = selection._eventRegistry;
        selection._eventRegistry = {};

        var tmpSel = new Selection(session);
        this.inVirtualSelectionMode = true;
        for (var i = ranges.length; i--;) {
            if ($byLines) {
                while (i > 0 && ranges[i].start.row == ranges[i - 1].end.row)
                    i--;
            }
            tmpSel.fromOrientedRange(ranges[i]);
            tmpSel.index = i;
            this.selection = session.selection = tmpSel;
            var cmdResult = cmd.exec ? cmd.exec(this, args || {}) : cmd(this, args || {});
            if (!result && cmdResult !== undefined)
                result = cmdResult;
            tmpSel.toOrientedRange(ranges[i]);
        }
        tmpSel.detach();

        this.selection = session.selection = selection;
        this.inVirtualSelectionMode = false;
        selection._eventRegistry = reg;
        selection.mergeOverlappingRanges();
        
        var anim = this.renderer.$scrollAnimation;
        this.onCursorChange();
        this.onSelectionChange();
        if (anim && anim.from == anim.to)
            this.renderer.animateScrolling(anim.from);
        
        return result;
    };
    this.exitMultiSelectMode = function() {
        if (!this.inMultiSelectMode || this.inVirtualSelectionMode)
            return;
        this.multiSelect.toSingleRange();
    };

    this.getSelectedText = function() {
        var text = "";
        if (this.inMultiSelectMode && !this.inVirtualSelectionMode) {
            var ranges = this.multiSelect.rangeList.ranges;
            var buf = [];
            for (var i = 0; i < ranges.length; i++) {
                buf.push(this.session.getTextRange(ranges[i]));
            }
            var nl = this.session.getDocument().getNewLineCharacter();
            text = buf.join(nl);
            if (text.length == (buf.length - 1) * nl.length)
                text = "";
        } else if (!this.selection.isEmpty()) {
            text = this.session.getTextRange(this.getSelectionRange());
        }
        return text;
    };
    
    this.$checkMultiselectChange = function(e, anchor) {
        if (this.inMultiSelectMode && !this.inVirtualSelectionMode) {
            var range = this.multiSelect.ranges[0];
            if (this.multiSelect.isEmpty() && anchor == this.multiSelect.anchor)
                return;
            var pos = anchor == this.multiSelect.anchor
                ? range.cursor == range.start ? range.end : range.start
                : range.cursor;
            if (pos.row != anchor.row 
                || this.session.$clipPositionToDocument(pos.row, pos.column).column != anchor.column)
                this.multiSelect.toSingleRange(this.multiSelect.toOrientedRange());
        }
    };
    this.findAll = function(needle, options, additive) {
        options = options || {};
        options.needle = needle || options.needle;
        if (options.needle == undefined) {
            var range = this.selection.isEmpty()
                ? this.selection.getWordRange()
                : this.selection.getRange();
            options.needle = this.session.getTextRange(range);
        }    
        this.$search.set(options);
        
        var ranges = this.$search.findAll(this.session);
        if (!ranges.length)
            return 0;

        this.$blockScrolling += 1;
        var selection = this.multiSelect;

        if (!additive)
            selection.toSingleRange(ranges[0]);

        for (var i = ranges.length; i--; )
            selection.addRange(ranges[i], true);
        if (range && selection.rangeList.rangeAtPoint(range.start))
            selection.addRange(range, true);
        
        this.$blockScrolling -= 1;

        return ranges.length;
    };
    this.selectMoreLines = function(dir, skip) {
        var range = this.selection.toOrientedRange();
        var isBackwards = range.cursor == range.end;

        var screenLead = this.session.documentToScreenPosition(range.cursor);
        if (this.selection.$desiredColumn)
            screenLead.column = this.selection.$desiredColumn;

        var lead = this.session.screenToDocumentPosition(screenLead.row + dir, screenLead.column);

        if (!range.isEmpty()) {
            var screenAnchor = this.session.documentToScreenPosition(isBackwards ? range.end : range.start);
            var anchor = this.session.screenToDocumentPosition(screenAnchor.row + dir, screenAnchor.column);
        } else {
            var anchor = lead;
        }

        if (isBackwards) {
            var newRange = Range.fromPoints(lead, anchor);
            newRange.cursor = newRange.start;
        } else {
            var newRange = Range.fromPoints(anchor, lead);
            newRange.cursor = newRange.end;
        }

        newRange.desiredColumn = screenLead.column;
        if (!this.selection.inMultiSelectMode) {
            this.selection.addRange(range);
        } else {
            if (skip)
                var toRemove = range.cursor;
        }

        this.selection.addRange(newRange);
        if (toRemove)
            this.selection.substractPoint(toRemove);
    };
    this.transposeSelections = function(dir) {
        var session = this.session;
        var sel = session.multiSelect;
        var all = sel.ranges;

        for (var i = all.length; i--; ) {
            var range = all[i];
            if (range.isEmpty()) {
                var tmp = session.getWordRange(range.start.row, range.start.column);
                range.start.row = tmp.start.row;
                range.start.column = tmp.start.column;
                range.end.row = tmp.end.row;
                range.end.column = tmp.end.column;
            }
        }
        sel.mergeOverlappingRanges();

        var words = [];
        for (var i = all.length; i--; ) {
            var range = all[i];
            words.unshift(session.getTextRange(range));
        }

        if (dir < 0)
            words.unshift(words.pop());
        else
            words.push(words.shift());

        for (var i = all.length; i--; ) {
            var range = all[i];
            var tmp = range.clone();
            session.replace(range, words[i]);
            range.start.row = tmp.start.row;
            range.start.column = tmp.start.column;
        }
    };
    this.selectMore = function(dir, skip, stopAtFirst) {
        var session = this.session;
        var sel = session.multiSelect;

        var range = sel.toOrientedRange();
        if (range.isEmpty()) {
            range = session.getWordRange(range.start.row, range.start.column);
            range.cursor = dir == -1 ? range.start : range.end;
            this.multiSelect.addRange(range);
            if (stopAtFirst)
                return;
        }
        var needle = session.getTextRange(range);

        var newRange = find(session, needle, dir);
        if (newRange) {
            newRange.cursor = dir == -1 ? newRange.start : newRange.end;
            this.$blockScrolling += 1;
            this.session.unfold(newRange);
            this.multiSelect.addRange(newRange);
            this.$blockScrolling -= 1;
            this.renderer.scrollCursorIntoView(null, 0.5);
        }
        if (skip)
            this.multiSelect.substractPoint(range.cursor);
    };
    this.alignCursors = function() {
        var session = this.session;
        var sel = session.multiSelect;
        var ranges = sel.ranges;
        var row = -1;
        var sameRowRanges = ranges.filter(function(r) {
            if (r.cursor.row == row)
                return true;
            row = r.cursor.row;
        });
        
        if (!ranges.length || sameRowRanges.length == ranges.length - 1) {
            var range = this.selection.getRange();
            var fr = range.start.row, lr = range.end.row;
            var guessRange = fr == lr;
            if (guessRange) {
                var max = this.session.getLength();
                var line;
                do {
                    line = this.session.getLine(lr);
                } while (/[=:]/.test(line) && ++lr < max);
                do {
                    line = this.session.getLine(fr);
                } while (/[=:]/.test(line) && --fr > 0);
                
                if (fr < 0) fr = 0;
                if (lr >= max) lr = max - 1;
            }
            var lines = this.session.removeFullLines(fr, lr);
            lines = this.$reAlignText(lines, guessRange);
            this.session.insert({row: fr, column: 0}, lines.join("\n") + "\n");
            if (!guessRange) {
                range.start.column = 0;
                range.end.column = lines[lines.length - 1].length;
            }
            this.selection.setRange(range);
        } else {
            sameRowRanges.forEach(function(r) {
                sel.substractPoint(r.cursor);
            });

            var maxCol = 0;
            var minSpace = Infinity;
            var spaceOffsets = ranges.map(function(r) {
                var p = r.cursor;
                var line = session.getLine(p.row);
                var spaceOffset = line.substr(p.column).search(/\S/g);
                if (spaceOffset == -1)
                    spaceOffset = 0;

                if (p.column > maxCol)
                    maxCol = p.column;
                if (spaceOffset < minSpace)
                    minSpace = spaceOffset;
                return spaceOffset;
            });
            ranges.forEach(function(r, i) {
                var p = r.cursor;
                var l = maxCol - p.column;
                var d = spaceOffsets[i] - minSpace;
                if (l > d)
                    session.insert(p, lang.stringRepeat(" ", l - d));
                else
                    session.remove(new Range(p.row, p.column, p.row, p.column - l + d));

                r.start.column = r.end.column = maxCol;
                r.start.row = r.end.row = p.row;
                r.cursor = r.end;
            });
            sel.fromOrientedRange(ranges[0]);
            this.renderer.updateCursor();
            this.renderer.updateBackMarkers();
        }
    };

    this.$reAlignText = function(lines, forceLeft) {
        var isLeftAligned = true, isRightAligned = true;
        var startW, textW, endW;

        return lines.map(function(line) {
            var m = line.match(/(\s*)(.*?)(\s*)([=:].*)/);
            if (!m)
                return [line];

            if (startW == null) {
                startW = m[1].length;
                textW = m[2].length;
                endW = m[3].length;
                return m;
            }

            if (startW + textW + endW != m[1].length + m[2].length + m[3].length)
                isRightAligned = false;
            if (startW != m[1].length)
                isLeftAligned = false;

            if (startW > m[1].length)
                startW = m[1].length;
            if (textW < m[2].length)
                textW = m[2].length;
            if (endW > m[3].length)
                endW = m[3].length;

            return m;
        }).map(forceLeft ? alignLeft :
            isLeftAligned ? isRightAligned ? alignRight : alignLeft : unAlign);

        function spaces(n) {
            return lang.stringRepeat(" ", n);
        }

        function alignLeft(m) {
            return !m[2] ? m[0] : spaces(startW) + m[2]
                + spaces(textW - m[2].length + endW)
                + m[4].replace(/^([=:])\s+/, "$1 ");
        }
        function alignRight(m) {
            return !m[2] ? m[0] : spaces(startW + textW - m[2].length) + m[2]
                + spaces(endW, " ")
                + m[4].replace(/^([=:])\s+/, "$1 ");
        }
        function unAlign(m) {
            return !m[2] ? m[0] : spaces(startW) + m[2]
                + spaces(endW)
                + m[4].replace(/^([=:])\s+/, "$1 ");
        }
    };
}).call(Editor.prototype);


function isSamePoint(p1, p2) {
    return p1.row == p2.row && p1.column == p2.column;
}
exports.onSessionChange = function(e) {
    var session = e.session;
    if (session && !session.multiSelect) {
        session.$selectionMarkers = [];
        session.selection.$initRangeList();
        session.multiSelect = session.selection;
    }
    this.multiSelect = session && session.multiSelect;

    var oldSession = e.oldSession;
    if (oldSession) {
        oldSession.multiSelect.off("addRange", this.$onAddRange);
        oldSession.multiSelect.off("removeRange", this.$onRemoveRange);
        oldSession.multiSelect.off("multiSelect", this.$onMultiSelect);
        oldSession.multiSelect.off("singleSelect", this.$onSingleSelect);
        oldSession.multiSelect.lead.off("change", this.$checkMultiselectChange);
        oldSession.multiSelect.anchor.off("change", this.$checkMultiselectChange);
    }

    if (session) {
        session.multiSelect.on("addRange", this.$onAddRange);
        session.multiSelect.on("removeRange", this.$onRemoveRange);
        session.multiSelect.on("multiSelect", this.$onMultiSelect);
        session.multiSelect.on("singleSelect", this.$onSingleSelect);
        session.multiSelect.lead.on("change", this.$checkMultiselectChange);
        session.multiSelect.anchor.on("change", this.$checkMultiselectChange);
    }

    if (session && this.inMultiSelectMode != session.selection.inMultiSelectMode) {
        if (session.selection.inMultiSelectMode)
            this.$onMultiSelect();
        else
            this.$onSingleSelect();
    }
};
function MultiSelect(editor) {
    if (editor.$multiselectOnSessionChange)
        return;
    editor.$onAddRange = editor.$onAddRange.bind(editor);
    editor.$onRemoveRange = editor.$onRemoveRange.bind(editor);
    editor.$onMultiSelect = editor.$onMultiSelect.bind(editor);
    editor.$onSingleSelect = editor.$onSingleSelect.bind(editor);
    editor.$multiselectOnSessionChange = exports.onSessionChange.bind(editor);
    editor.$checkMultiselectChange = editor.$checkMultiselectChange.bind(editor);

    editor.$multiselectOnSessionChange(editor);
    editor.on("changeSession", editor.$multiselectOnSessionChange);

    editor.on("mousedown", onMouseDown);
    editor.commands.addCommands(commands.defaultCommands);

    addAltCursorListeners(editor);
}

function addAltCursorListeners(editor){
    var el = editor.textInput.getElement();
    var altCursor = false;
    event.addListener(el, "keydown", function(e) {
        var altDown = e.keyCode == 18 && !(e.ctrlKey || e.shiftKey || e.metaKey);
        if (editor.$blockSelectEnabled && altDown) {
            if (!altCursor) {
                editor.renderer.setMouseCursor("crosshair");
                altCursor = true;
            }
        } else if (altCursor) {
            reset();
        }
    });

    event.addListener(el, "keyup", reset);
    event.addListener(el, "blur", reset);
    function reset(e) {
        if (altCursor) {
            editor.renderer.setMouseCursor("");
            altCursor = false;
        }
    }
}

exports.MultiSelect = MultiSelect;


acequire("./config").defineOptions(Editor.prototype, "editor", {
    enableMultiselect: {
        set: function(val) {
            MultiSelect(this);
            if (val) {
                this.on("changeSession", this.$multiselectOnSessionChange);
                this.on("mousedown", onMouseDown);
            } else {
                this.off("changeSession", this.$multiselectOnSessionChange);
                this.off("mousedown", onMouseDown);
            }
        },
        value: true
    },
    enableBlockSelect: {
        set: function(val) {
            this.$blockSelectEnabled = val;
        },
        value: true
    }
});



});

ace.define("ace/mode/folding/fold_mode",["require","exports","module","ace/range"], function(acequire, exports, module) {
"use strict";

var Range = acequire("../../range").Range;

var FoldMode = exports.FoldMode = function() {};

(function() {

    this.foldingStartMarker = null;
    this.foldingStopMarker = null;
    this.getFoldWidget = function(session, foldStyle, row) {
        var line = session.getLine(row);
        if (this.foldingStartMarker.test(line))
            return "start";
        if (foldStyle == "markbeginend"
                && this.foldingStopMarker
                && this.foldingStopMarker.test(line))
            return "end";
        return "";
    };

    this.getFoldWidgetRange = function(session, foldStyle, row) {
        return null;
    };

    this.indentationBlock = function(session, row, column) {
        var re = /\S/;
        var line = session.getLine(row);
        var startLevel = line.search(re);
        if (startLevel == -1)
            return;

        var startColumn = column || line.length;
        var maxRow = session.getLength();
        var startRow = row;
        var endRow = row;

        while (++row < maxRow) {
            var level = session.getLine(row).search(re);

            if (level == -1)
                continue;

            if (level <= startLevel)
                break;

            endRow = row;
        }

        if (endRow > startRow) {
            var endColumn = session.getLine(endRow).length;
            return new Range(startRow, startColumn, endRow, endColumn);
        }
    };

    this.openingBracketBlock = function(session, bracket, row, column, typeRe) {
        var start = {row: row, column: column + 1};
        var end = session.$findClosingBracket(bracket, start, typeRe);
        if (!end)
            return;

        var fw = session.foldWidgets[end.row];
        if (fw == null)
            fw = session.getFoldWidget(end.row);

        if (fw == "start" && end.row > start.row) {
            end.row --;
            end.column = session.getLine(end.row).length;
        }
        return Range.fromPoints(start, end);
    };

    this.closingBracketBlock = function(session, bracket, row, column, typeRe) {
        var end = {row: row, column: column};
        var start = session.$findOpeningBracket(bracket, end);

        if (!start)
            return;

        start.column++;
        end.column--;

        return  Range.fromPoints(start, end);
    };
}).call(FoldMode.prototype);

});

ace.define("ace/theme/textmate",["require","exports","module","ace/lib/dom"], function(acequire, exports, module) {
"use strict";

exports.isDark = false;
exports.cssClass = "ace-tm";
exports.cssText = ".ace-tm .ace_gutter {\
background: #f0f0f0;\
color: #333;\
}\
.ace-tm .ace_print-margin {\
width: 1px;\
background: #e8e8e8;\
}\
.ace-tm .ace_fold {\
background-color: #6B72E6;\
}\
.ace-tm {\
background-color: #FFFFFF;\
color: black;\
}\
.ace-tm .ace_cursor {\
color: black;\
}\
.ace-tm .ace_invisible {\
color: rgb(191, 191, 191);\
}\
.ace-tm .ace_storage,\
.ace-tm .ace_keyword {\
color: blue;\
}\
.ace-tm .ace_constant {\
color: rgb(197, 6, 11);\
}\
.ace-tm .ace_constant.ace_buildin {\
color: rgb(88, 72, 246);\
}\
.ace-tm .ace_constant.ace_language {\
color: rgb(88, 92, 246);\
}\
.ace-tm .ace_constant.ace_library {\
color: rgb(6, 150, 14);\
}\
.ace-tm .ace_invalid {\
background-color: rgba(255, 0, 0, 0.1);\
color: red;\
}\
.ace-tm .ace_support.ace_function {\
color: rgb(60, 76, 114);\
}\
.ace-tm .ace_support.ace_constant {\
color: rgb(6, 150, 14);\
}\
.ace-tm .ace_support.ace_type,\
.ace-tm .ace_support.ace_class {\
color: rgb(109, 121, 222);\
}\
.ace-tm .ace_keyword.ace_operator {\
color: rgb(104, 118, 135);\
}\
.ace-tm .ace_string {\
color: rgb(3, 106, 7);\
}\
.ace-tm .ace_comment {\
color: rgb(76, 136, 107);\
}\
.ace-tm .ace_comment.ace_doc {\
color: rgb(0, 102, 255);\
}\
.ace-tm .ace_comment.ace_doc.ace_tag {\
color: rgb(128, 159, 191);\
}\
.ace-tm .ace_constant.ace_numeric {\
color: rgb(0, 0, 205);\
}\
.ace-tm .ace_variable {\
color: rgb(49, 132, 149);\
}\
.ace-tm .ace_xml-pe {\
color: rgb(104, 104, 91);\
}\
.ace-tm .ace_entity.ace_name.ace_function {\
color: #0000A2;\
}\
.ace-tm .ace_heading {\
color: rgb(12, 7, 255);\
}\
.ace-tm .ace_list {\
color:rgb(185, 6, 144);\
}\
.ace-tm .ace_meta.ace_tag {\
color:rgb(0, 22, 142);\
}\
.ace-tm .ace_string.ace_regex {\
color: rgb(255, 0, 0)\
}\
.ace-tm .ace_marker-layer .ace_selection {\
background: rgb(181, 213, 255);\
}\
.ace-tm.ace_multiselect .ace_selection.ace_start {\
box-shadow: 0 0 3px 0px white;\
}\
.ace-tm .ace_marker-layer .ace_step {\
background: rgb(252, 255, 0);\
}\
.ace-tm .ace_marker-layer .ace_stack {\
background: rgb(164, 229, 101);\
}\
.ace-tm .ace_marker-layer .ace_bracket {\
margin: -1px 0 0 -1px;\
border: 1px solid rgb(192, 192, 192);\
}\
.ace-tm .ace_marker-layer .ace_active-line {\
background: rgba(0, 0, 0, 0.07);\
}\
.ace-tm .ace_gutter-active-line {\
background-color : #dcdcdc;\
}\
.ace-tm .ace_marker-layer .ace_selected-word {\
background: rgb(250, 250, 255);\
border: 1px solid rgb(200, 200, 250);\
}\
.ace-tm .ace_indent-guide {\
background: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAE0lEQVQImWP4////f4bLly//BwAmVgd1/w11/gAAAABJRU5ErkJggg==\") right repeat-y;\
}\
";

var dom = acequire("../lib/dom");
dom.importCssString(exports.cssText, exports.cssClass);
});

ace.define("ace/line_widgets",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/range"], function(acequire, exports, module) {
"use strict";

var oop = acequire("./lib/oop");
var dom = acequire("./lib/dom");
var Range = acequire("./range").Range;


function LineWidgets(session) {
    this.session = session;
    this.session.widgetManager = this;
    this.session.getRowLength = this.getRowLength;
    this.session.$getWidgetScreenLength = this.$getWidgetScreenLength;
    this.updateOnChange = this.updateOnChange.bind(this);
    this.renderWidgets = this.renderWidgets.bind(this);
    this.measureWidgets = this.measureWidgets.bind(this);
    this.session._changedWidgets = [];
    this.$onChangeEditor = this.$onChangeEditor.bind(this);
    
    this.session.on("change", this.updateOnChange);
    this.session.on("changeFold", this.updateOnFold);
    this.session.on("changeEditor", this.$onChangeEditor);
}

(function() {
    this.getRowLength = function(row) {
        var h;
        if (this.lineWidgets)
            h = this.lineWidgets[row] && this.lineWidgets[row].rowCount || 0;
        else 
            h = 0;
        if (!this.$useWrapMode || !this.$wrapData[row]) {
            return 1 + h;
        } else {
            return this.$wrapData[row].length + 1 + h;
        }
    };

    this.$getWidgetScreenLength = function() {
        var screenRows = 0;
        this.lineWidgets.forEach(function(w){
            if (w && w.rowCount && !w.hidden)
                screenRows += w.rowCount;
        });
        return screenRows;
    };    
    
    this.$onChangeEditor = function(e) {
        this.attach(e.editor);
    };
    
    this.attach = function(editor) {
        if (editor  && editor.widgetManager && editor.widgetManager != this)
            editor.widgetManager.detach();

        if (this.editor == editor)
            return;

        this.detach();
        this.editor = editor;
        
        if (editor) {
            editor.widgetManager = this;
            editor.renderer.on("beforeRender", this.measureWidgets);
            editor.renderer.on("afterRender", this.renderWidgets);
        }
    };
    this.detach = function(e) {
        var editor = this.editor;
        if (!editor)
            return;
        
        this.editor = null;
        editor.widgetManager = null;
        
        editor.renderer.off("beforeRender", this.measureWidgets);
        editor.renderer.off("afterRender", this.renderWidgets);
        var lineWidgets = this.session.lineWidgets;
        lineWidgets && lineWidgets.forEach(function(w) {
            if (w && w.el && w.el.parentNode) {
                w._inDocument = false;
                w.el.parentNode.removeChild(w.el);
            }
        });
    };

    this.updateOnFold = function(e, session) {
        var lineWidgets = session.lineWidgets;
        if (!lineWidgets || !e.action)
            return;
        var fold = e.data;
        var start = fold.start.row;
        var end = fold.end.row;
        var hide = e.action == "add";
        for (var i = start + 1; i < end; i++) {
            if (lineWidgets[i])
                lineWidgets[i].hidden = hide;
        }
        if (lineWidgets[end]) {
            if (hide) {
                if (!lineWidgets[start])
                    lineWidgets[start] = lineWidgets[end];
                else
                    lineWidgets[end].hidden = hide;
            } else {
                if (lineWidgets[start] == lineWidgets[end])
                    lineWidgets[start] = undefined;
                lineWidgets[end].hidden = hide;
            }
        }
    };
    
    this.updateOnChange = function(delta) {
        var lineWidgets = this.session.lineWidgets;
        if (!lineWidgets) return;
        
        var startRow = delta.start.row;
        var len = delta.end.row - startRow;

        if (len === 0) {
        } else if (delta.action == 'remove') {
            var removed = lineWidgets.splice(startRow + 1, len);
            removed.forEach(function(w) {
                w && this.removeLineWidget(w);
            }, this);
            this.$updateRows();
        } else {
            var args = new Array(len);
            args.unshift(startRow, 0);
            lineWidgets.splice.apply(lineWidgets, args);
            this.$updateRows();
        }
    };
    
    this.$updateRows = function() {
        var lineWidgets = this.session.lineWidgets;
        if (!lineWidgets) return;
        var noWidgets = true;
        lineWidgets.forEach(function(w, i) {
            if (w) {
                noWidgets = false;
                w.row = i;
                while (w.$oldWidget) {
                    w.$oldWidget.row = i;
                    w = w.$oldWidget;
                }
            }
        });
        if (noWidgets)
            this.session.lineWidgets = null;
    };

    this.addLineWidget = function(w) {
        if (!this.session.lineWidgets)
            this.session.lineWidgets = new Array(this.session.getLength());
        
        var old = this.session.lineWidgets[w.row];
        if (old) {
            w.$oldWidget = old;
            if (old.el && old.el.parentNode) {
                old.el.parentNode.removeChild(old.el);
                old._inDocument = false;
            }
        }
            
        this.session.lineWidgets[w.row] = w;
        
        w.session = this.session;
        
        var renderer = this.editor.renderer;
        if (w.html && !w.el) {
            w.el = dom.createElement("div");
            w.el.innerHTML = w.html;
        }
        if (w.el) {
            dom.addCssClass(w.el, "ace_lineWidgetContainer");
            w.el.style.position = "absolute";
            w.el.style.zIndex = 5;
            renderer.container.appendChild(w.el);
            w._inDocument = true;
        }
        
        if (!w.coverGutter) {
            w.el.style.zIndex = 3;
        }
        if (w.pixelHeight == null) {
            w.pixelHeight = w.el.offsetHeight;
        }
        if (w.rowCount == null) {
            w.rowCount = w.pixelHeight / renderer.layerConfig.lineHeight;
        }
        
        var fold = this.session.getFoldAt(w.row, 0);
        w.$fold = fold;
        if (fold) {
            var lineWidgets = this.session.lineWidgets;
            if (w.row == fold.end.row && !lineWidgets[fold.start.row])
                lineWidgets[fold.start.row] = w;
            else
                w.hidden = true;
        }
            
        this.session._emit("changeFold", {data:{start:{row: w.row}}});
        
        this.$updateRows();
        this.renderWidgets(null, renderer);
        this.onWidgetChanged(w);
        return w;
    };
    
    this.removeLineWidget = function(w) {
        w._inDocument = false;
        w.session = null;
        if (w.el && w.el.parentNode)
            w.el.parentNode.removeChild(w.el);
        if (w.editor && w.editor.destroy) try {
            w.editor.destroy();
        } catch(e){}
        if (this.session.lineWidgets) {
            var w1 = this.session.lineWidgets[w.row];
            if (w1 == w) {
                this.session.lineWidgets[w.row] = w.$oldWidget;
                if (w.$oldWidget)
                    this.onWidgetChanged(w.$oldWidget);
            } else {
                while (w1) {
                    if (w1.$oldWidget == w) {
                        w1.$oldWidget = w.$oldWidget;
                        break;
                    }
                    w1 = w1.$oldWidget;
                }
            }
        }
        this.session._emit("changeFold", {data:{start:{row: w.row}}});
        this.$updateRows();
    };
    
    this.getWidgetsAtRow = function(row) {
        var lineWidgets = this.session.lineWidgets;
        var w = lineWidgets && lineWidgets[row];
        var list = [];
        while (w) {
            list.push(w);
            w = w.$oldWidget;
        }
        return list;
    };
    
    this.onWidgetChanged = function(w) {
        this.session._changedWidgets.push(w);
        this.editor && this.editor.renderer.updateFull();
    };
    
    this.measureWidgets = function(e, renderer) {
        var changedWidgets = this.session._changedWidgets;
        var config = renderer.layerConfig;
        
        if (!changedWidgets || !changedWidgets.length) return;
        var min = Infinity;
        for (var i = 0; i < changedWidgets.length; i++) {
            var w = changedWidgets[i];
            if (!w || !w.el) continue;
            if (w.session != this.session) continue;
            if (!w._inDocument) {
                if (this.session.lineWidgets[w.row] != w)
                    continue;
                w._inDocument = true;
                renderer.container.appendChild(w.el);
            }
            
            w.h = w.el.offsetHeight;
            
            if (!w.fixedWidth) {
                w.w = w.el.offsetWidth;
                w.screenWidth = Math.ceil(w.w / config.characterWidth);
            }
            
            var rowCount = w.h / config.lineHeight;
            if (w.coverLine) {
                rowCount -= this.session.getRowLineCount(w.row);
                if (rowCount < 0)
                    rowCount = 0;
            }
            if (w.rowCount != rowCount) {
                w.rowCount = rowCount;
                if (w.row < min)
                    min = w.row;
            }
        }
        if (min != Infinity) {
            this.session._emit("changeFold", {data:{start:{row: min}}});
            this.session.lineWidgetWidth = null;
        }
        this.session._changedWidgets = [];
    };
    
    this.renderWidgets = function(e, renderer) {
        var config = renderer.layerConfig;
        var lineWidgets = this.session.lineWidgets;
        if (!lineWidgets)
            return;
        var first = Math.min(this.firstRow, config.firstRow);
        var last = Math.max(this.lastRow, config.lastRow, lineWidgets.length);
        
        while (first > 0 && !lineWidgets[first])
            first--;
        
        this.firstRow = config.firstRow;
        this.lastRow = config.lastRow;

        renderer.$cursorLayer.config = config;
        for (var i = first; i <= last; i++) {
            var w = lineWidgets[i];
            if (!w || !w.el) continue;
            if (w.hidden) {
                w.el.style.top = -100 - (w.pixelHeight || 0) + "px";
                continue;
            }
            if (!w._inDocument) {
                w._inDocument = true;
                renderer.container.appendChild(w.el);
            }
            var top = renderer.$cursorLayer.getPixelPosition({row: i, column:0}, true).top;
            if (!w.coverLine)
                top += config.lineHeight * this.session.getRowLineCount(w.row);
            w.el.style.top = top - config.offset + "px";
            
            var left = w.coverGutter ? 0 : renderer.gutterWidth;
            if (!w.fixedWidth)
                left -= renderer.scrollLeft;
            w.el.style.left = left + "px";
            
            if (w.fullWidth && w.screenWidth) {
                w.el.style.minWidth = config.width + 2 * config.padding + "px";
            }
            
            if (w.fixedWidth) {
                w.el.style.right = renderer.scrollBar.getWidth() + "px";
            } else {
                w.el.style.right = "";
            }
        }
    };
    
}).call(LineWidgets.prototype);


exports.LineWidgets = LineWidgets;

});

ace.define("ace/ext/error_marker",["require","exports","module","ace/line_widgets","ace/lib/dom","ace/range"], function(acequire, exports, module) {
"use strict";
var LineWidgets = acequire("../line_widgets").LineWidgets;
var dom = acequire("../lib/dom");
var Range = acequire("../range").Range;

function binarySearch(array, needle, comparator) {
    var first = 0;
    var last = array.length - 1;

    while (first <= last) {
        var mid = (first + last) >> 1;
        var c = comparator(needle, array[mid]);
        if (c > 0)
            first = mid + 1;
        else if (c < 0)
            last = mid - 1;
        else
            return mid;
    }
    return -(first + 1);
}

function findAnnotations(session, row, dir) {
    var annotations = session.getAnnotations().sort(Range.comparePoints);
    if (!annotations.length)
        return;
    
    var i = binarySearch(annotations, {row: row, column: -1}, Range.comparePoints);
    if (i < 0)
        i = -i - 1;
    
    if (i >= annotations.length)
        i = dir > 0 ? 0 : annotations.length - 1;
    else if (i === 0 && dir < 0)
        i = annotations.length - 1;
    
    var annotation = annotations[i];
    if (!annotation || !dir)
        return;

    if (annotation.row === row) {
        do {
            annotation = annotations[i += dir];
        } while (annotation && annotation.row === row);
        if (!annotation)
            return annotations.slice();
    }
    
    
    var matched = [];
    row = annotation.row;
    do {
        matched[dir < 0 ? "unshift" : "push"](annotation);
        annotation = annotations[i += dir];
    } while (annotation && annotation.row == row);
    return matched.length && matched;
}

exports.showErrorMarker = function(editor, dir) {
    var session = editor.session;
    if (!session.widgetManager) {
        session.widgetManager = new LineWidgets(session);
        session.widgetManager.attach(editor);
    }
    
    var pos = editor.getCursorPosition();
    var row = pos.row;
    var oldWidget = session.widgetManager.getWidgetsAtRow(row).filter(function(w) {
        return w.type == "errorMarker";
    })[0];
    if (oldWidget) {
        oldWidget.destroy();
    } else {
        row -= dir;
    }
    var annotations = findAnnotations(session, row, dir);
    var gutterAnno;
    if (annotations) {
        var annotation = annotations[0];
        pos.column = (annotation.pos && typeof annotation.column != "number"
            ? annotation.pos.sc
            : annotation.column) || 0;
        pos.row = annotation.row;
        gutterAnno = editor.renderer.$gutterLayer.$annotations[pos.row];
    } else if (oldWidget) {
        return;
    } else {
        gutterAnno = {
            text: ["Looks good!"],
            className: "ace_ok"
        };
    }
    editor.session.unfold(pos.row);
    editor.selection.moveToPosition(pos);
    
    var w = {
        row: pos.row, 
        fixedWidth: true,
        coverGutter: true,
        el: dom.createElement("div"),
        type: "errorMarker"
    };
    var el = w.el.appendChild(dom.createElement("div"));
    var arrow = w.el.appendChild(dom.createElement("div"));
    arrow.className = "error_widget_arrow " + gutterAnno.className;
    
    var left = editor.renderer.$cursorLayer
        .getPixelPosition(pos).left;
    arrow.style.left = left + editor.renderer.gutterWidth - 5 + "px";
    
    w.el.className = "error_widget_wrapper";
    el.className = "error_widget " + gutterAnno.className;
    el.innerHTML = gutterAnno.text.join("<br>");
    
    el.appendChild(dom.createElement("div"));
    
    var kb = function(_, hashId, keyString) {
        if (hashId === 0 && (keyString === "esc" || keyString === "return")) {
            w.destroy();
            return {command: "null"};
        }
    };
    
    w.destroy = function() {
        if (editor.$mouseHandler.isMousePressed)
            return;
        editor.keyBinding.removeKeyboardHandler(kb);
        session.widgetManager.removeLineWidget(w);
        editor.off("changeSelection", w.destroy);
        editor.off("changeSession", w.destroy);
        editor.off("mouseup", w.destroy);
        editor.off("change", w.destroy);
    };
    
    editor.keyBinding.addKeyboardHandler(kb);
    editor.on("changeSelection", w.destroy);
    editor.on("changeSession", w.destroy);
    editor.on("mouseup", w.destroy);
    editor.on("change", w.destroy);
    
    editor.session.widgetManager.addLineWidget(w);
    
    w.el.onmousedown = editor.focus.bind(editor);
    
    editor.renderer.scrollCursorIntoView(null, 0.5, {bottom: w.el.offsetHeight});
};


dom.importCssString("\
    .error_widget_wrapper {\
        background: inherit;\
        color: inherit;\
        border:none\
    }\
    .error_widget {\
        border-top: solid 2px;\
        border-bottom: solid 2px;\
        margin: 5px 0;\
        padding: 10px 40px;\
        white-space: pre-wrap;\
    }\
    .error_widget.ace_error, .error_widget_arrow.ace_error{\
        border-color: #ff5a5a\
    }\
    .error_widget.ace_warning, .error_widget_arrow.ace_warning{\
        border-color: #F1D817\
    }\
    .error_widget.ace_info, .error_widget_arrow.ace_info{\
        border-color: #5a5a5a\
    }\
    .error_widget.ace_ok, .error_widget_arrow.ace_ok{\
        border-color: #5aaa5a\
    }\
    .error_widget_arrow {\
        position: absolute;\
        border: solid 5px;\
        border-top-color: transparent!important;\
        border-right-color: transparent!important;\
        border-left-color: transparent!important;\
        top: -5px;\
    }\
", "");

});

ace.define("ace/ace",["require","exports","module","ace/lib/fixoldbrowsers","ace/lib/dom","ace/lib/event","ace/editor","ace/edit_session","ace/undomanager","ace/virtual_renderer","ace/worker/worker_client","ace/keyboard/hash_handler","ace/placeholder","ace/multi_select","ace/mode/folding/fold_mode","ace/theme/textmate","ace/ext/error_marker","ace/config"], function(acequire, exports, module) {
"use strict";

acequire("./lib/fixoldbrowsers");

var dom = acequire("./lib/dom");
var event = acequire("./lib/event");

var Editor = acequire("./editor").Editor;
var EditSession = acequire("./edit_session").EditSession;
var UndoManager = acequire("./undomanager").UndoManager;
var Renderer = acequire("./virtual_renderer").VirtualRenderer;
acequire("./worker/worker_client");
acequire("./keyboard/hash_handler");
acequire("./placeholder");
acequire("./multi_select");
acequire("./mode/folding/fold_mode");
acequire("./theme/textmate");
acequire("./ext/error_marker");

exports.config = acequire("./config");
exports.acequire = acequire;

if (true)
    exports.define = __webpack_require__(/*! !webpack amd define */ 192);
exports.edit = function(el) {
    if (typeof el == "string") {
        var _id = el;
        el = document.getElementById(_id);
        if (!el)
            throw new Error("ace.edit can't find div #" + _id);
    }

    if (el && el.env && el.env.editor instanceof Editor)
        return el.env.editor;

    var value = "";
    if (el && /input|textarea/i.test(el.tagName)) {
        var oldNode = el;
        value = oldNode.value;
        el = dom.createElement("pre");
        oldNode.parentNode.replaceChild(el, oldNode);
    } else if (el) {
        value = dom.getInnerText(el);
        el.innerHTML = "";
    }

    var doc = exports.createEditSession(value);

    var editor = new Editor(new Renderer(el));
    editor.setSession(doc);

    var env = {
        document: doc,
        editor: editor,
        onResize: editor.resize.bind(editor, null)
    };
    if (oldNode) env.textarea = oldNode;
    event.addListener(window, "resize", env.onResize);
    editor.on("destroy", function() {
        event.removeListener(window, "resize", env.onResize);
        env.editor.container.env = null; // prevent memory leak on old ie
    });
    editor.container.env = editor.env = env;
    return editor;
};
exports.createEditSession = function(text, mode) {
    var doc = new EditSession(text, mode);
    doc.setUndoManager(new UndoManager());
    return doc;
};
exports.EditSession = EditSession;
exports.UndoManager = UndoManager;
exports.version = "1.2.9";
});
            (function() {
                ace.acequire(["ace/ace"], function(a) {
                    if (a) {
                        a.config.init(true);
                        a.define = ace.define;
                    }
                    if (!window.ace)
                        window.ace = a;
                    for (var key in a) if (a.hasOwnProperty(key))
                        window.ace[key] = a[key];
                });
            })();
        
module.exports = window.ace.acequire("ace/ace");

/***/ }),
/* 610 */
/*!**********************************************************!*\
  !*** ./node_modules/js-beautify/js/lib/beautify-html.js ***!
  \**********************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*jshint curly:false, eqeqeq:true, laxbreak:true, noempty:false */
/* AUTO-GENERATED. DO NOT MODIFY. */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.


 Style HTML
---------------

  Written by Nochum Sossonko, (nsossonko@hotmail.com)

  Based on code initially developed by: Einar Lielmanis, <einar@jsbeautifier.org>
    http://jsbeautifier.org/

  Usage:
    style_html(html_source);

    style_html(html_source, options);

  The options are:
    indent_inner_html (default false)  — indent <head> and <body> sections,
    indent_size (default 4)          — indentation size,
    indent_char (default space)      — character to indent with,
    wrap_line_length (default 250)            -  maximum amount of characters per line (0 = disable)
    brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none"
            put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
    unformatted (defaults to inline tags) - list of tags, that shouldn't be reformatted
    content_unformatted (defaults to pre tag) - list of tags, whose content shouldn't be reformatted
    indent_scripts (default normal)  - "keep"|"separate"|"normal"
    preserve_newlines (default true) - whether existing line breaks before elements should be preserved
                                        Only works before elements, not inside tags or for text.
    max_preserve_newlines (default unlimited) - maximum number of line breaks to be preserved in one chunk
    indent_handlebars (default false) - format and indent {{#foo}} and {{/foo}}
    end_with_newline (false)          - end with a newline
    extra_liners (default [head,body,/html]) -List of tags that should have an extra newline before them.

    e.g.

    style_html(html_source, {
      'indent_inner_html': false,
      'indent_size': 2,
      'indent_char': ' ',
      'wrap_line_length': 78,
      'brace_style': 'expand',
      'preserve_newlines': true,
      'max_preserve_newlines': 5,
      'indent_handlebars': false,
      'extra_liners': ['/html']
    });
*/

(function() {
var legacy_beautify_html =
/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// identity function for calling harmony imports with the correct context
/******/ 	__webpack_require__.i = function(value) { return value; };
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 3);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

var mergeOpts = __webpack_require__(2).mergeOpts;
var acorn = __webpack_require__(1);


var lineBreak = acorn.lineBreak;
var allLineBreaks = acorn.allLineBreaks;

// function trim(s) {
//     return s.replace(/^\s+|\s+$/g, '');
// }

function ltrim(s) {
    return s.replace(/^\s+/g, '');
}

function rtrim(s) {
    return s.replace(/\s+$/g, '');
}

function Beautifier(html_source, options, js_beautify, css_beautify) {
    //Wrapper function to invoke all the necessary constructors and deal with the output.
    html_source = html_source || '';

    var multi_parser,
        indent_inner_html,
        indent_body_inner_html,
        indent_head_inner_html,
        indent_size,
        indent_character,
        wrap_line_length,
        brace_style,
        unformatted,
        content_unformatted,
        preserve_newlines,
        max_preserve_newlines,
        indent_handlebars,
        wrap_attributes,
        wrap_attributes_indent_size,
        is_wrap_attributes_force,
        is_wrap_attributes_force_expand_multiline,
        is_wrap_attributes_force_aligned,
        end_with_newline,
        extra_liners,
        eol;

    options = options || {};

    // Allow the setting of language/file-type specific options
    // with inheritance of overall settings
    options = mergeOpts(options, 'html');

    // backwards compatibility to 1.3.4
    if ((options.wrap_line_length === undefined || parseInt(options.wrap_line_length, 10) === 0) &&
        (options.max_char !== undefined && parseInt(options.max_char, 10) !== 0)) {
        options.wrap_line_length = options.max_char;
    }

    indent_inner_html = (options.indent_inner_html === undefined) ? false : options.indent_inner_html;
    indent_body_inner_html = (options.indent_body_inner_html === undefined) ? true : options.indent_body_inner_html;
    indent_head_inner_html = (options.indent_head_inner_html === undefined) ? true : options.indent_head_inner_html;
    indent_size = (options.indent_size === undefined) ? 4 : parseInt(options.indent_size, 10);
    indent_character = (options.indent_char === undefined) ? ' ' : options.indent_char;
    brace_style = (options.brace_style === undefined) ? 'collapse' : options.brace_style;
    wrap_line_length = parseInt(options.wrap_line_length, 10) === 0 ? 32786 : parseInt(options.wrap_line_length || 250, 10);
    unformatted = options.unformatted || [
        // https://www.w3.org/TR/html5/dom.html#phrasing-content
        'a', 'abbr', 'area', 'audio', 'b', 'bdi', 'bdo', 'br', 'button', 'canvas', 'cite',
        'code', 'data', 'datalist', 'del', 'dfn', 'em', 'embed', 'i', 'iframe', 'img',
        'input', 'ins', 'kbd', 'keygen', 'label', 'map', 'mark', 'math', 'meter', 'noscript',
        'object', 'output', 'progress', 'q', 'ruby', 's', 'samp', /* 'script', */ 'select', 'small',
        'span', 'strong', 'sub', 'sup', 'svg', 'template', 'textarea', 'time', 'u', 'var',
        'video', 'wbr', 'text',
        // prexisting - not sure of full effect of removing, leaving in
        'acronym', 'address', 'big', 'dt', 'ins', 'strike', 'tt',
    ];
    content_unformatted = options.content_unformatted || [
        'pre',
    ];
    preserve_newlines = (options.preserve_newlines === undefined) ? true : options.preserve_newlines;
    max_preserve_newlines = preserve_newlines ?
        (isNaN(parseInt(options.max_preserve_newlines, 10)) ? 32786 : parseInt(options.max_preserve_newlines, 10)) :
        0;
    indent_handlebars = (options.indent_handlebars === undefined) ? false : options.indent_handlebars;
    wrap_attributes = (options.wrap_attributes === undefined) ? 'auto' : options.wrap_attributes;
    wrap_attributes_indent_size = (isNaN(parseInt(options.wrap_attributes_indent_size, 10))) ? indent_size : parseInt(options.wrap_attributes_indent_size, 10);
    is_wrap_attributes_force = wrap_attributes.substr(0, 'force'.length) === 'force';
    is_wrap_attributes_force_expand_multiline = (wrap_attributes === 'force-expand-multiline');
    is_wrap_attributes_force_aligned = (wrap_attributes === 'force-aligned');
    end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
    extra_liners = (typeof options.extra_liners === 'object') && options.extra_liners ?
        options.extra_liners.concat() : (typeof options.extra_liners === 'string') ?
        options.extra_liners.split(',') : 'head,body,/html'.split(',');
    eol = options.eol ? options.eol : 'auto';

    if (options.indent_with_tabs) {
        indent_character = '\t';
        indent_size = 1;
    }

    if (eol === 'auto') {
        eol = '\n';
        if (html_source && lineBreak.test(html_source || '')) {
            eol = html_source.match(lineBreak)[0];
        }
    }

    eol = eol.replace(/\\r/, '\r').replace(/\\n/, '\n');

    // HACK: newline parsing inconsistent. This brute force normalizes the input.
    html_source = html_source.replace(allLineBreaks, '\n');

    function Parser() {

        this.pos = 0; //Parser position
        this.token = '';
        this.current_mode = 'CONTENT'; //reflects the current Parser mode: TAG/CONTENT
        this.tags = { //An object to hold tags, their position, and their parent-tags, initiated with default values
            parent: 'parent1',
            parentcount: 1,
            parent1: ''
        };
        this.tag_type = '';
        this.token_text = this.last_token = this.last_text = this.token_type = '';
        this.newlines = 0;
        this.indent_content = indent_inner_html;
        this.indent_body_inner_html = indent_body_inner_html;
        this.indent_head_inner_html = indent_head_inner_html;

        this.Utils = { //Uilities made available to the various functions
            whitespace: "\n\r\t ".split(''),

            single_token: options.void_elements || [
                // HTLM void elements - aka self-closing tags - aka singletons
                // https://www.w3.org/html/wg/drafts/html/master/syntax.html#void-elements
                'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'keygen',
                'link', 'menuitem', 'meta', 'param', 'source', 'track', 'wbr',
                // NOTE: Optional tags - are not understood.
                // https://www.w3.org/TR/html5/syntax.html#optional-tags
                // The rules for optional tags are too complex for a simple list
                // Also, the content of these tags should still be indented in many cases.
                // 'li' is a good exmple.

                // Doctype and xml elements
                '!doctype', '?xml',
                // ?php tag
                '?php',
                // other tags that were in this list, keeping just in case
                'basefont', 'isindex'
            ],
            extra_liners: extra_liners, //for tags that need a line of whitespace before them
            in_array: function(what, arr) {
                for (var i = 0; i < arr.length; i++) {
                    if (what === arr[i]) {
                        return true;
                    }
                }
                return false;
            }
        };

        // Return true if the given text is composed entirely of whitespace.
        this.is_whitespace = function(text) {
            for (var n = 0; n < text.length; n++) {
                if (!this.Utils.in_array(text.charAt(n), this.Utils.whitespace)) {
                    return false;
                }
            }
            return true;
        };

        this.traverse_whitespace = function() {
            var input_char = '';

            input_char = this.input.charAt(this.pos);
            if (this.Utils.in_array(input_char, this.Utils.whitespace)) {
                this.newlines = 0;
                while (this.Utils.in_array(input_char, this.Utils.whitespace)) {
                    if (preserve_newlines && input_char === '\n' && this.newlines <= max_preserve_newlines) {
                        this.newlines += 1;
                    }

                    this.pos++;
                    input_char = this.input.charAt(this.pos);
                }
                return true;
            }
            return false;
        };

        // Append a space to the given content (string array) or, if we are
        // at the wrap_line_length, append a newline/indentation.
        // return true if a newline was added, false if a space was added
        this.space_or_wrap = function(content) {
            if (this.line_char_count >= this.wrap_line_length) { //insert a line when the wrap_line_length is reached
                this.print_newline(false, content);
                this.print_indentation(content);
                return true;
            } else {
                this.line_char_count++;
                content.push(' ');
                return false;
            }
        };

        this.get_content = function() { //function to capture regular content between tags
            var input_char = '',
                content = [],
                handlebarsStarted = 0;

            while (this.input.charAt(this.pos) !== '<' || handlebarsStarted === 2) {
                if (this.pos >= this.input.length) {
                    return content.length ? content.join('') : ['', 'TK_EOF'];
                }

                if (handlebarsStarted < 2 && this.traverse_whitespace()) {
                    this.space_or_wrap(content);
                    continue;
                }

                input_char = this.input.charAt(this.pos);

                if (indent_handlebars) {
                    if (input_char === '{') {
                        handlebarsStarted += 1;
                    } else if (handlebarsStarted < 2) {
                        handlebarsStarted = 0;
                    }

                    if (input_char === '}' && handlebarsStarted > 0) {
                        if (handlebarsStarted-- === 0) {
                            break;
                        }
                    }
                    // Handlebars parsing is complicated.
                    // {{#foo}} and {{/foo}} are formatted tags.
                    // {{something}} should get treated as content, except:
                    // {{else}} specifically behaves like {{#if}} and {{/if}}
                    var peek3 = this.input.substr(this.pos, 3);
                    if (peek3 === '{{#' || peek3 === '{{/') {
                        // These are tags and not content.
                        break;
                    } else if (peek3 === '{{!') {
                        return [this.get_tag(), 'TK_TAG_HANDLEBARS_COMMENT'];
                    } else if (this.input.substr(this.pos, 2) === '{{') {
                        if (this.get_tag(true) === '{{else}}') {
                            break;
                        }
                    }
                }

                this.pos++;
                this.line_char_count++;
                content.push(input_char); //letter at-a-time (or string) inserted to an array
            }
            return content.length ? content.join('') : '';
        };

        this.get_contents_to = function(name) { //get the full content of a script or style to pass to js_beautify
            if (this.pos === this.input.length) {
                return ['', 'TK_EOF'];
            }
            var content = '';
            var reg_match = new RegExp('</' + name + '\\s*>', 'igm');
            reg_match.lastIndex = this.pos;
            var reg_array = reg_match.exec(this.input);
            var end_script = reg_array ? reg_array.index : this.input.length; //absolute end of script
            if (this.pos < end_script) { //get everything in between the script tags
                content = this.input.substring(this.pos, end_script);
                this.pos = end_script;
            }
            return content;
        };

        this.record_tag = function(tag) { //function to record a tag and its parent in this.tags Object
            if (this.tags[tag + 'count']) { //check for the existence of this tag type
                this.tags[tag + 'count']++;
                this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
            } else { //otherwise initialize this tag type
                this.tags[tag + 'count'] = 1;
                this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
            }
            this.tags[tag + this.tags[tag + 'count'] + 'parent'] = this.tags.parent; //set the parent (i.e. in the case of a div this.tags.div1parent)
            this.tags.parent = tag + this.tags[tag + 'count']; //and make this the current parent (i.e. in the case of a div 'div1')
        };

        this.retrieve_tag = function(tag) { //function to retrieve the opening tag to the corresponding closer
            if (this.tags[tag + 'count']) { //if the openener is not in the Object we ignore it
                var temp_parent = this.tags.parent; //check to see if it's a closable tag.
                while (temp_parent) { //till we reach '' (the initial value);
                    if (tag + this.tags[tag + 'count'] === temp_parent) { //if this is it use it
                        break;
                    }
                    temp_parent = this.tags[temp_parent + 'parent']; //otherwise keep on climbing up the DOM Tree
                }
                if (temp_parent) { //if we caught something
                    this.indent_level = this.tags[tag + this.tags[tag + 'count']]; //set the indent_level accordingly
                    this.tags.parent = this.tags[temp_parent + 'parent']; //and set the current parent
                }
                delete this.tags[tag + this.tags[tag + 'count'] + 'parent']; //delete the closed tags parent reference...
                delete this.tags[tag + this.tags[tag + 'count']]; //...and the tag itself
                if (this.tags[tag + 'count'] === 1) {
                    delete this.tags[tag + 'count'];
                } else {
                    this.tags[tag + 'count']--;
                }
            }
        };

        this.indent_to_tag = function(tag) {
            // Match the indentation level to the last use of this tag, but don't remove it.
            if (!this.tags[tag + 'count']) {
                return;
            }
            var temp_parent = this.tags.parent;
            while (temp_parent) {
                if (tag + this.tags[tag + 'count'] === temp_parent) {
                    break;
                }
                temp_parent = this.tags[temp_parent + 'parent'];
            }
            if (temp_parent) {
                this.indent_level = this.tags[tag + this.tags[tag + 'count']];
            }
        };

        this.get_tag = function(peek) { //function to get a full tag and parse its type
            var input_char = '',
                content = [],
                comment = '',
                space = false,
                first_attr = true,
                has_wrapped_attrs = false,
                tag_start, tag_end,
                tag_start_char,
                orig_pos = this.pos,
                orig_line_char_count = this.line_char_count,
                is_tag_closed = false,
                tail;

            peek = peek !== undefined ? peek : false;

            do {
                if (this.pos >= this.input.length) {
                    if (peek) {
                        this.pos = orig_pos;
                        this.line_char_count = orig_line_char_count;
                    }
                    return content.length ? content.join('') : ['', 'TK_EOF'];
                }

                input_char = this.input.charAt(this.pos);
                this.pos++;

                if (this.Utils.in_array(input_char, this.Utils.whitespace)) { //don't want to insert unnecessary space
                    space = true;
                    continue;
                }

                if (input_char === "'" || input_char === '"') {
                    input_char += this.get_unformatted(input_char);
                    space = true;
                }

                if (input_char === '=') { //no space before =
                    space = false;
                }
                tail = this.input.substr(this.pos - 1);
                if (is_wrap_attributes_force_expand_multiline && has_wrapped_attrs && !is_tag_closed && (input_char === '>' || input_char === '/')) {
                    if (tail.match(/^\/?\s*>/)) {
                        space = false;
                        is_tag_closed = true;
                        this.print_newline(false, content);
                        this.print_indentation(content);
                    }
                }
                if (content.length && content[content.length - 1] !== '=' && input_char !== '>' && space) {
                    //no space after = or before >
                    var wrapped = this.space_or_wrap(content);
                    var indentAttrs = wrapped && input_char !== '/' && !is_wrap_attributes_force;
                    space = false;

                    if (is_wrap_attributes_force && input_char !== '/') {
                        var force_first_attr_wrap = false;
                        if (is_wrap_attributes_force_expand_multiline && first_attr) {
                            var is_only_attribute = tail.match(/^\S*(="([^"]|\\")*")?\s*\/?\s*>/) !== null;
                            force_first_attr_wrap = !is_only_attribute;
                        }
                        if (!first_attr || force_first_attr_wrap) {
                            this.print_newline(false, content);
                            this.print_indentation(content);
                            indentAttrs = true;
                        }
                    }
                    if (indentAttrs) {
                        has_wrapped_attrs = true;

                        //indent attributes an auto, forced, or forced-align line-wrap
                        var alignment_size = wrap_attributes_indent_size;
                        if (is_wrap_attributes_force_aligned) {
                            alignment_size = content.indexOf(' ') + 1;
                        }

                        for (var count = 0; count < alignment_size; count++) {
                            // only ever further indent with spaces since we're trying to align characters
                            content.push(' ');
                        }
                    }
                    if (first_attr) {
                        for (var i = 0; i < content.length; i++) {
                            if (content[i] === ' ') {
                                first_attr = false;
                                break;
                            }
                        }
                    }
                }

                if (indent_handlebars && tag_start_char === '<') {
                    // When inside an angle-bracket tag, put spaces around
                    // handlebars not inside of strings.
                    if ((input_char + this.input.charAt(this.pos)) === '{{') {
                        input_char += this.get_unformatted('}}');
                        if (content.length && content[content.length - 1] !== ' ' && content[content.length - 1] !== '<') {
                            input_char = ' ' + input_char;
                        }
                        space = true;
                    }
                }

                if (input_char === '<' && !tag_start_char) {
                    tag_start = this.pos - 1;
                    tag_start_char = '<';
                }

                if (indent_handlebars && !tag_start_char) {
                    if (content.length >= 2 && content[content.length - 1] === '{' && content[content.length - 2] === '{') {
                        if (input_char === '#' || input_char === '/' || input_char === '!') {
                            tag_start = this.pos - 3;
                        } else {
                            tag_start = this.pos - 2;
                        }
                        tag_start_char = '{';
                    }
                }

                this.line_char_count++;
                content.push(input_char); //inserts character at-a-time (or string)

                if (content[1] && (content[1] === '!' || content[1] === '?' || content[1] === '%')) { //if we're in a comment, do something special
                    // We treat all comments as literals, even more than preformatted tags
                    // we just look for the appropriate close tag
                    content = [this.get_comment(tag_start)];
                    break;
                }

                if (indent_handlebars && content[1] && content[1] === '{' && content[2] && content[2] === '!') { //if we're in a comment, do something special
                    // We treat all comments as literals, even more than preformatted tags
                    // we just look for the appropriate close tag
                    content = [this.get_comment(tag_start)];
                    break;
                }

                if (indent_handlebars && tag_start_char === '{' && content.length > 2 && content[content.length - 2] === '}' && content[content.length - 1] === '}') {
                    break;
                }
            } while (input_char !== '>');

            var tag_complete = content.join('');
            var tag_index;
            var tag_offset;

            // must check for space first otherwise the tag could have the first attribute included, and
            // then not un-indent correctly
            if (tag_complete.indexOf(' ') !== -1) { //if there's whitespace, thats where the tag name ends
                tag_index = tag_complete.indexOf(' ');
            } else if (tag_complete.indexOf('\n') !== -1) { //if there's a line break, thats where the tag name ends
                tag_index = tag_complete.indexOf('\n');
            } else if (tag_complete.charAt(0) === '{') {
                tag_index = tag_complete.indexOf('}');
            } else { //otherwise go with the tag ending
                tag_index = tag_complete.indexOf('>');
            }
            if (tag_complete.charAt(0) === '<' || !indent_handlebars) {
                tag_offset = 1;
            } else {
                tag_offset = tag_complete.charAt(2) === '#' ? 3 : 2;
            }
            var tag_check = tag_complete.substring(tag_offset, tag_index).toLowerCase();
            if (tag_complete.charAt(tag_complete.length - 2) === '/' ||
                this.Utils.in_array(tag_check, this.Utils.single_token)) { //if this tag name is a single tag type (either in the list or has a closing /)
                if (!peek) {
                    this.tag_type = 'SINGLE';
                }
            } else if (indent_handlebars && tag_complete.charAt(0) === '{' && tag_check === 'else') {
                if (!peek) {
                    this.indent_to_tag('if');
                    this.tag_type = 'HANDLEBARS_ELSE';
                    this.indent_content = true;
                    this.traverse_whitespace();
                }
            } else if (this.is_unformatted(tag_check, unformatted) ||
                this.is_unformatted(tag_check, content_unformatted)) {
                // do not reformat the "unformatted" or "content_unformatted" tags
                comment = this.get_unformatted('</' + tag_check + '>', tag_complete); //...delegate to get_unformatted function
                content.push(comment);
                tag_end = this.pos - 1;
                this.tag_type = 'SINGLE';
            } else if (tag_check === 'script' &&
                (tag_complete.search('type') === -1 ||
                    (tag_complete.search('type') > -1 &&
                        tag_complete.search(/\b(text|application|dojo)\/(x-)?(javascript|ecmascript|jscript|livescript|(ld\+)?json|method|aspect)/) > -1))) {
                if (!peek) {
                    this.record_tag(tag_check);
                    this.tag_type = 'SCRIPT';
                }
            } else if (tag_check === 'style' &&
                (tag_complete.search('type') === -1 ||
                    (tag_complete.search('type') > -1 && tag_complete.search('text/css') > -1))) {
                if (!peek) {
                    this.record_tag(tag_check);
                    this.tag_type = 'STYLE';
                }
            } else if (tag_check.charAt(0) === '!') { //peek for <! comment
                // for comments content is already correct.
                if (!peek) {
                    this.tag_type = 'SINGLE';
                    this.traverse_whitespace();
                }
            } else if (!peek) {
                if (tag_check.charAt(0) === '/') { //this tag is a double tag so check for tag-ending
                    this.retrieve_tag(tag_check.substring(1)); //remove it and all ancestors
                    this.tag_type = 'END';
                } else { //otherwise it's a start-tag
                    this.record_tag(tag_check); //push it on the tag stack
                    if (tag_check.toLowerCase() !== 'html') {
                        this.indent_content = true;
                    }
                    this.tag_type = 'START';
                }

                // Allow preserving of newlines after a start or end tag
                if (this.traverse_whitespace()) {
                    this.space_or_wrap(content);
                }

                if (this.Utils.in_array(tag_check, this.Utils.extra_liners)) { //check if this double needs an extra line
                    this.print_newline(false, this.output);
                    if (this.output.length && this.output[this.output.length - 2] !== '\n') {
                        this.print_newline(true, this.output);
                    }
                }
            }

            if (peek) {
                this.pos = orig_pos;
                this.line_char_count = orig_line_char_count;
            }

            return content.join(''); //returns fully formatted tag
        };

        this.get_comment = function(start_pos) { //function to return comment content in its entirety
            // this is will have very poor perf, but will work for now.
            var comment = '',
                delimiter = '>',
                matched = false;

            this.pos = start_pos;
            var input_char = this.input.charAt(this.pos);
            this.pos++;

            while (this.pos <= this.input.length) {
                comment += input_char;

                // only need to check for the delimiter if the last chars match
                if (comment.charAt(comment.length - 1) === delimiter.charAt(delimiter.length - 1) &&
                    comment.indexOf(delimiter) !== -1) {
                    break;
                }

                // only need to search for custom delimiter for the first few characters
                if (!matched && comment.length < 10) {
                    if (comment.indexOf('<![if') === 0) { //peek for <![if conditional comment
                        delimiter = '<![endif]>';
                        matched = true;
                    } else if (comment.indexOf('<![cdata[') === 0) { //if it's a <[cdata[ comment...
                        delimiter = ']]>';
                        matched = true;
                    } else if (comment.indexOf('<![') === 0) { // some other ![ comment? ...
                        delimiter = ']>';
                        matched = true;
                    } else if (comment.indexOf('<!--') === 0) { // <!-- comment ...
                        delimiter = '-->';
                        matched = true;
                    } else if (comment.indexOf('{{!--') === 0) { // {{!-- handlebars comment
                        delimiter = '--}}';
                        matched = true;
                    } else if (comment.indexOf('{{!') === 0) { // {{! handlebars comment
                        if (comment.length === 5 && comment.indexOf('{{!--') === -1) {
                            delimiter = '}}';
                            matched = true;
                        }
                    } else if (comment.indexOf('<?') === 0) { // {{! handlebars comment
                        delimiter = '?>';
                        matched = true;
                    } else if (comment.indexOf('<%') === 0) { // {{! handlebars comment
                        delimiter = '%>';
                        matched = true;
                    }
                }

                input_char = this.input.charAt(this.pos);
                this.pos++;
            }

            return comment;
        };

        function tokenMatcher(delimiter) {
            var token = '';

            var add = function(str) {
                var newToken = token + str.toLowerCase();
                token = newToken.length <= delimiter.length ? newToken : newToken.substr(newToken.length - delimiter.length, delimiter.length);
            };

            var doesNotMatch = function() {
                return token.indexOf(delimiter) === -1;
            };

            return {
                add: add,
                doesNotMatch: doesNotMatch
            };
        }

        this.get_unformatted = function(delimiter, orig_tag) { //function to return unformatted content in its entirety
            if (orig_tag && orig_tag.toLowerCase().indexOf(delimiter) !== -1) {
                return '';
            }
            var input_char = '';
            var content = '';
            var space = true;

            var delimiterMatcher = tokenMatcher(delimiter);

            do {

                if (this.pos >= this.input.length) {
                    return content;
                }

                input_char = this.input.charAt(this.pos);
                this.pos++;

                if (this.Utils.in_array(input_char, this.Utils.whitespace)) {
                    if (!space) {
                        this.line_char_count--;
                        continue;
                    }
                    if (input_char === '\n' || input_char === '\r') {
                        content += '\n';
                        /*  Don't change tab indention for unformatted blocks.  If using code for html editing, this will greatly affect <pre> tags if they are specified in the 'unformatted array'
            for (var i=0; i<this.indent_level; i++) {
              content += this.indent_string;
            }
            space = false; //...and make sure other indentation is erased
            */
                        this.line_char_count = 0;
                        continue;
                    }
                }
                content += input_char;
                delimiterMatcher.add(input_char);
                this.line_char_count++;
                space = true;

                if (indent_handlebars && input_char === '{' && content.length && content.charAt(content.length - 2) === '{') {
                    // Handlebars expressions in strings should also be unformatted.
                    content += this.get_unformatted('}}');
                    // Don't consider when stopping for delimiters.
                }
            } while (delimiterMatcher.doesNotMatch());

            return content;
        };

        this.get_token = function() { //initial handler for token-retrieval
            var token;

            if (this.last_token === 'TK_TAG_SCRIPT' || this.last_token === 'TK_TAG_STYLE') { //check if we need to format javascript
                var type = this.last_token.substr(7);
                token = this.get_contents_to(type);
                if (typeof token !== 'string') {
                    return token;
                }
                return [token, 'TK_' + type];
            }
            if (this.current_mode === 'CONTENT') {
                token = this.get_content();
                if (typeof token !== 'string') {
                    return token;
                } else {
                    return [token, 'TK_CONTENT'];
                }
            }

            if (this.current_mode === 'TAG') {
                token = this.get_tag();
                if (typeof token !== 'string') {
                    return token;
                } else {
                    var tag_name_type = 'TK_TAG_' + this.tag_type;
                    return [token, tag_name_type];
                }
            }
        };

        this.get_full_indent = function(level) {
            level = this.indent_level + level || 0;
            if (level < 1) {
                return '';
            }

            return Array(level + 1).join(this.indent_string);
        };

        this.is_unformatted = function(tag_check, unformatted) {
            //is this an HTML5 block-level link?
            if (!this.Utils.in_array(tag_check, unformatted)) {
                return false;
            }

            if (tag_check.toLowerCase() !== 'a' || !this.Utils.in_array('a', unformatted)) {
                return true;
            }

            //at this point we have an  tag; is its first child something we want to remain
            //unformatted?
            var next_tag = this.get_tag(true /* peek. */ );

            // test next_tag to see if it is just html tag (no external content)
            var tag = (next_tag || "").match(/^\s*<\s*\/?([a-z]*)\s*[^>]*>\s*$/);

            // if next_tag comes back but is not an isolated tag, then
            // let's treat the 'a' tag as having content
            // and respect the unformatted option
            if (!tag || this.Utils.in_array(tag[1], unformatted)) {
                return true;
            } else {
                return false;
            }
        };

        this.printer = function(js_source, indent_character, indent_size, wrap_line_length, brace_style) { //handles input/output and some other printing functions

            this.input = js_source || ''; //gets the input for the Parser

            // HACK: newline parsing inconsistent. This brute force normalizes the input.
            this.input = this.input.replace(/\r\n|[\r\u2028\u2029]/g, '\n');

            this.output = [];
            this.indent_character = indent_character;
            this.indent_string = '';
            this.indent_size = indent_size;
            this.brace_style = brace_style;
            this.indent_level = 0;
            this.wrap_line_length = wrap_line_length;
            this.line_char_count = 0; //count to see if wrap_line_length was exceeded

            for (var i = 0; i < this.indent_size; i++) {
                this.indent_string += this.indent_character;
            }

            this.print_newline = function(force, arr) {
                this.line_char_count = 0;
                if (!arr || !arr.length) {
                    return;
                }
                if (force || (arr[arr.length - 1] !== '\n')) { //we might want the extra line
                    if ((arr[arr.length - 1] !== '\n')) {
                        arr[arr.length - 1] = rtrim(arr[arr.length - 1]);
                    }
                    arr.push('\n');
                }
            };

            this.print_indentation = function(arr) {
                for (var i = 0; i < this.indent_level; i++) {
                    arr.push(this.indent_string);
                    this.line_char_count += this.indent_string.length;
                }
            };

            this.print_token = function(text) {
                // Avoid printing initial whitespace.
                if (this.is_whitespace(text) && !this.output.length) {
                    return;
                }
                if (text || text !== '') {
                    if (this.output.length && this.output[this.output.length - 1] === '\n') {
                        this.print_indentation(this.output);
                        text = ltrim(text);
                    }
                }
                this.print_token_raw(text);
            };

            this.print_token_raw = function(text) {
                // If we are going to print newlines, truncate trailing
                // whitespace, as the newlines will represent the space.
                if (this.newlines > 0) {
                    text = rtrim(text);
                }

                if (text && text !== '') {
                    if (text.length > 1 && text.charAt(text.length - 1) === '\n') {
                        // unformatted tags can grab newlines as their last character
                        this.output.push(text.slice(0, -1));
                        this.print_newline(false, this.output);
                    } else {
                        this.output.push(text);
                    }
                }

                for (var n = 0; n < this.newlines; n++) {
                    this.print_newline(n > 0, this.output);
                }
                this.newlines = 0;
            };

            this.indent = function() {
                this.indent_level++;
            };

            this.unindent = function() {
                if (this.indent_level > 0) {
                    this.indent_level--;
                }
            };
        };
        return this;
    }

    /*_____________________--------------------_____________________*/

    this.beautify = function() {
        multi_parser = new Parser(); //wrapping functions Parser
        multi_parser.printer(html_source, indent_character, indent_size, wrap_line_length, brace_style); //initialize starting values
        while (true) {
            var t = multi_parser.get_token();
            multi_parser.token_text = t[0];
            multi_parser.token_type = t[1];

            if (multi_parser.token_type === 'TK_EOF') {
                break;
            }

            switch (multi_parser.token_type) {
                case 'TK_TAG_START':
                    multi_parser.print_newline(false, multi_parser.output);
                    multi_parser.print_token(multi_parser.token_text);
                    if (multi_parser.indent_content) {
                        if ((multi_parser.indent_body_inner_html || !multi_parser.token_text.match(/<body(?:.*)>/)) &&
                            (multi_parser.indent_head_inner_html || !multi_parser.token_text.match(/<head(?:.*)>/))) {

                            multi_parser.indent();
                        }

                        multi_parser.indent_content = false;
                    }
                    multi_parser.current_mode = 'CONTENT';
                    break;
                case 'TK_TAG_STYLE':
                case 'TK_TAG_SCRIPT':
                    multi_parser.print_newline(false, multi_parser.output);
                    multi_parser.print_token(multi_parser.token_text);
                    multi_parser.current_mode = 'CONTENT';
                    break;
                case 'TK_TAG_END':
                    //Print new line only if the tag has no content and has child
                    if (multi_parser.last_token === 'TK_CONTENT' && multi_parser.last_text === '') {
                        var tag_name = (multi_parser.token_text.match(/\w+/) || [])[0];
                        var tag_extracted_from_last_output = null;
                        if (multi_parser.output.length) {
                            tag_extracted_from_last_output = multi_parser.output[multi_parser.output.length - 1].match(/(?:<|{{#)\s*(\w+)/);
                        }
                        if (tag_extracted_from_last_output === null ||
                            (tag_extracted_from_last_output[1] !== tag_name && !multi_parser.Utils.in_array(tag_extracted_from_last_output[1], unformatted))) {
                            multi_parser.print_newline(false, multi_parser.output);
                        }
                    }
                    multi_parser.print_token(multi_parser.token_text);
                    multi_parser.current_mode = 'CONTENT';
                    break;
                case 'TK_TAG_SINGLE':
                    // Don't add a newline before elements that should remain unformatted.
                    var tag_check = multi_parser.token_text.match(/^\s*<([a-z-]+)/i);
                    if (!tag_check || !multi_parser.Utils.in_array(tag_check[1], unformatted)) {
                        multi_parser.print_newline(false, multi_parser.output);
                    }
                    multi_parser.print_token(multi_parser.token_text);
                    multi_parser.current_mode = 'CONTENT';
                    break;
                case 'TK_TAG_HANDLEBARS_ELSE':
                    // Don't add a newline if opening {{#if}} tag is on the current line
                    var foundIfOnCurrentLine = false;
                    for (var lastCheckedOutput = multi_parser.output.length - 1; lastCheckedOutput >= 0; lastCheckedOutput--) {
                        if (multi_parser.output[lastCheckedOutput] === '\n') {
                            break;
                        } else {
                            if (multi_parser.output[lastCheckedOutput].match(/{{#if/)) {
                                foundIfOnCurrentLine = true;
                                break;
                            }
                        }
                    }
                    if (!foundIfOnCurrentLine) {
                        multi_parser.print_newline(false, multi_parser.output);
                    }
                    multi_parser.print_token(multi_parser.token_text);
                    if (multi_parser.indent_content) {
                        multi_parser.indent();
                        multi_parser.indent_content = false;
                    }
                    multi_parser.current_mode = 'CONTENT';
                    break;
                case 'TK_TAG_HANDLEBARS_COMMENT':
                    multi_parser.print_token(multi_parser.token_text);
                    multi_parser.current_mode = 'TAG';
                    break;
                case 'TK_CONTENT':
                    multi_parser.print_token(multi_parser.token_text);
                    multi_parser.current_mode = 'TAG';
                    break;
                case 'TK_STYLE':
                case 'TK_SCRIPT':
                    if (multi_parser.token_text !== '') {
                        multi_parser.print_newline(false, multi_parser.output);
                        var text = multi_parser.token_text,
                            _beautifier,
                            script_indent_level = 1;
                        if (multi_parser.token_type === 'TK_SCRIPT') {
                            _beautifier = typeof js_beautify === 'function' && js_beautify;
                        } else if (multi_parser.token_type === 'TK_STYLE') {
                            _beautifier = typeof css_beautify === 'function' && css_beautify;
                        }

                        if (options.indent_scripts === "keep") {
                            script_indent_level = 0;
                        } else if (options.indent_scripts === "separate") {
                            script_indent_level = -multi_parser.indent_level;
                        }

                        var indentation = multi_parser.get_full_indent(script_indent_level);
                        if (_beautifier) {

                            // call the Beautifier if avaliable
                            var Child_options = function() {
                                this.eol = '\n';
                            };
                            Child_options.prototype = options;
                            var child_options = new Child_options();
                            text = _beautifier(text.replace(/^\s*/, indentation), child_options);
                        } else {
                            // simply indent the string otherwise
                            var white = text.match(/^\s*/)[0];
                            var _level = white.match(/[^\n\r]*$/)[0].split(multi_parser.indent_string).length - 1;
                            var reindent = multi_parser.get_full_indent(script_indent_level - _level);
                            text = text.replace(/^\s*/, indentation)
                                .replace(/\r\n|\r|\n/g, '\n' + reindent)
                                .replace(/\s+$/, '');
                        }
                        if (text) {
                            multi_parser.print_token_raw(text);
                            multi_parser.print_newline(true, multi_parser.output);
                        }
                    }
                    multi_parser.current_mode = 'TAG';
                    break;
                default:
                    // We should not be getting here but we don't want to drop input on the floor
                    // Just output the text and move on
                    if (multi_parser.token_text !== '') {
                        multi_parser.print_token(multi_parser.token_text);
                    }
                    break;
            }
            multi_parser.last_token = multi_parser.token_type;
            multi_parser.last_text = multi_parser.token_text;
        }
        var sweet_code = multi_parser.output.join('').replace(/[\r\n\t ]+$/, '');

        // establish end_with_newline
        if (end_with_newline) {
            sweet_code += '\n';
        }

        if (eol !== '\n') {
            sweet_code = sweet_code.replace(/[\n]/g, eol);
        }

        return sweet_code;
    };
}

module.exports.Beautifier = Beautifier;


/***/ }),
/* 1 */
/***/ (function(module, exports) {

/* jshint curly: false */
// This section of code is taken from acorn.
//
// Acorn was written by Marijn Haverbeke and released under an MIT
// license. The Unicode regexps (for identifiers and whitespace) were
// taken from [Esprima](http://esprima.org) by Ariya Hidayat.
//
// Git repositories for Acorn are available at
//
//     http://marijnhaverbeke.nl/git/acorn
//     https://github.com/marijnh/acorn.git

// ## Character categories

// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.

var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
var nonASCIIidentifierChars = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

// Whether a single character denotes a newline.

exports.newline = /[\n\r\u2028\u2029]/;

// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.

// in javascript, these two differ
// in python they are the same, different methods are called on them
exports.lineBreak = new RegExp('\r\n|' + exports.newline.source);
exports.allLineBreaks = new RegExp(exports.lineBreak.source, 'g');


// Test whether a given character code starts an identifier.

exports.isIdentifierStart = function(code) {
    // permit $ (36) and @ (64). @ is used in ES7 decorators.
    if (code < 65) return code === 36 || code === 64;
    // 65 through 91 are uppercase letters.
    if (code < 91) return true;
    // permit _ (95).
    if (code < 97) return code === 95;
    // 97 through 123 are lowercase letters.
    if (code < 123) return true;
    return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
};

// Test whether a given character is part of an identifier.

exports.isIdentifierChar = function(code) {
    if (code < 48) return code === 36;
    if (code < 58) return true;
    if (code < 65) return false;
    if (code < 91) return true;
    if (code < 97) return code === 95;
    if (code < 123) return true;
    return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
};


/***/ }),
/* 2 */
/***/ (function(module, exports) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

function mergeOpts(allOptions, targetType) {
    var finalOpts = {};
    var name;

    for (name in allOptions) {
        if (name !== targetType) {
            finalOpts[name] = allOptions[name];
        }
    }

    //merge in the per type settings for the targetType
    if (targetType in allOptions) {
        for (name in allOptions[targetType]) {
            finalOpts[name] = allOptions[targetType][name];
        }
    }
    return finalOpts;
}

module.exports.mergeOpts = mergeOpts;


/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

    The MIT License (MIT)

    Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

var Beautifier = __webpack_require__(0).Beautifier;

function style_html(html_source, options, js_beautify, css_beautify) {
    var beautifier = new Beautifier(html_source, options, js_beautify, css_beautify);
    return beautifier.beautify();
}

module.exports = style_html;

/***/ })
/******/ ]);
var style_html = legacy_beautify_html;
/* Footer */
if (true) {
    // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__, __webpack_require__(/*! ./beautify */ 194), __webpack_require__(/*! ./beautify-css */ 193)], __WEBPACK_AMD_DEFINE_RESULT__ = (function(requireamd) {
        var js_beautify = __webpack_require__(/*! ./beautify */ 194);
        var css_beautify = __webpack_require__(/*! ./beautify-css */ 193);

        return {
            html_beautify: function(html_source, options) {
                return style_html(html_source, options, js_beautify.js_beautify, css_beautify.css_beautify);
            }
        };
    }).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
} else { var css_beautify, js_beautify; }

}());


/***/ }),
/* 611 */
/*!**********************************************!*\
  !*** ./node_modules/js-beautify/js/index.js ***!
  \**********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*
  The MIT License (MIT)

  Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.

*/

/**
The following batches are equivalent:

var beautify_js = require('js-beautify');
var beautify_js = require('js-beautify').js;
var beautify_js = require('js-beautify').js_beautify;

var beautify_css = require('js-beautify').css;
var beautify_css = require('js-beautify').css_beautify;

var beautify_html = require('js-beautify').html;
var beautify_html = require('js-beautify').html_beautify;

All methods returned accept two arguments, the source string and an options object.
**/

function get_beautify(js_beautify, css_beautify, html_beautify) {
    // the default is js
    var beautify = function(src, config) {
        return js_beautify.js_beautify(src, config);
    };

    // short aliases
    beautify.js = js_beautify.js_beautify;
    beautify.css = css_beautify.css_beautify;
    beautify.html = html_beautify.html_beautify;

    // legacy aliases
    beautify.js_beautify = js_beautify.js_beautify;
    beautify.css_beautify = css_beautify.css_beautify;
    beautify.html_beautify = html_beautify.html_beautify;

    return beautify;
}

if (true) {
    // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [
        __webpack_require__(/*! ./lib/beautify */ 194),
        __webpack_require__(/*! ./lib/beautify-css */ 193),
        __webpack_require__(/*! ./lib/beautify-html */ 610)
    ], __WEBPACK_AMD_DEFINE_RESULT__ = (function(js_beautify, css_beautify, html_beautify) {
        return get_beautify(js_beautify, css_beautify, html_beautify);
    }).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
} else {}

/***/ }),
/* 612 */,
/* 613 */,
/* 614 */,
/* 615 */,
/* 616 */,
/* 617 */,
/* 618 */,
/* 619 */,
/* 620 */,
/* 621 */,
/* 622 */,
/* 623 */,
/* 624 */,
/* 625 */,
/* 626 */,
/* 627 */,
/* 628 */
/*!*************************************************!*\
  !*** ./node_modules/jsplumb/dist/js/jsplumb.js ***!
  \*************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

/**
 * jsBezier
 *
 * Copyright (c) 2010 - 2017 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * licensed under the MIT license.
 *
 * a set of Bezier curve functions that deal with Beziers, used by jsPlumb, and perhaps useful for other people.  These functions work with Bezier
 * curves of arbitrary degree.
 *
 * - functions are all in the 'jsBezier' namespace.
 *
 * - all input points should be in the format {x:.., y:..}. all output points are in this format too.
 *
 * - all input curves should be in the format [ {x:.., y:..}, {x:.., y:..}, {x:.., y:..}, {x:.., y:..} ]
 *
 * - 'location' as used as an input here refers to a decimal in the range 0-1 inclusive, which indicates a point some proportion along the length
 * of the curve.  location as output has the same format and meaning.
 *
 *
 * Function List:
 * --------------
 *
 * distanceFromCurve(point, curve)
 *
 * 	Calculates the distance that the given point lies from the given Bezier.  Note that it is computed relative to the center of the Bezier,
 * so if you have stroked the curve with a wide pen you may wish to take that into account!  The distance returned is relative to the values
 * of the curve and the point - it will most likely be pixels.
 *
 * gradientAtPoint(curve, location)
 *
 * 	Calculates the gradient to the curve at the given location, as a decimal between 0 and 1 inclusive.
 *
 * gradientAtPointAlongCurveFrom (curve, location)
 *
 *	Calculates the gradient at the point on the given curve that is 'distance' units from location.
 *
 * nearestPointOnCurve(point, curve)
 *
 *	Calculates the nearest point to the given point on the given curve.  The return value of this is a JS object literal, containing both the
 *point's coordinates and also the 'location' of the point (see above), for example:  { point:{x:551,y:150}, location:0.263365 }.
 *
 * pointOnCurve(curve, location)
 *
 * 	Calculates the coordinates of the point on the given Bezier curve at the given location.
 *
 * pointAlongCurveFrom(curve, location, distance)
 *
 * 	Calculates the coordinates of the point on the given curve that is 'distance' units from location.  'distance' should be in the same coordinate
 * space as that used to construct the Bezier curve.  For an HTML Canvas usage, for example, distance would be a measure of pixels.
 *
 * locationAlongCurveFrom(curve, location, distance)
 *
 * 	Calculates the location on the given curve that is 'distance' units from location.  'distance' should be in the same coordinate
 * space as that used to construct the Bezier curve.  For an HTML Canvas usage, for example, distance would be a measure of pixels.
 *
 * perpendicularToCurveAt(curve, location, length, distance)
 *
 * 	Calculates the perpendicular to the given curve at the given location.  length is the length of the line you wish for (it will be centered
 * on the point at 'location'). distance is optional, and allows you to specify a point along the path from the given location as the center of
 * the perpendicular returned.  The return value of this is an array of two points: [ {x:...,y:...}, {x:...,y:...} ].
 *
 *
 */

(function() {

    var root = this;

    if(typeof Math.sgn == "undefined") {
        Math.sgn = function(x) { return x == 0 ? 0 : x > 0 ? 1 :-1; };
    }

    var Vectors = {
            subtract 	: 	function(v1, v2) { return {x:v1.x - v2.x, y:v1.y - v2.y }; },
            dotProduct	: 	function(v1, v2) { return (v1.x * v2.x)  + (v1.y * v2.y); },
            square		:	function(v) { return Math.sqrt((v.x * v.x) + (v.y * v.y)); },
            scale		:	function(v, s) { return {x:v.x * s, y:v.y * s }; }
        },

        maxRecursion = 64,
        flatnessTolerance = Math.pow(2.0,-maxRecursion-1);

    /**
     * Calculates the distance that the point lies from the curve.
     *
     * @param point a point in the form {x:567, y:3342}
     * @param curve a Bezier curve in the form [{x:..., y:...}, {x:..., y:...}, {x:..., y:...}, {x:..., y:...}].  note that this is currently
     * hardcoded to assume cubiz beziers, but would be better off supporting any degree.
     * @return a JS object literal containing location and distance, for example: {location:0.35, distance:10}.  Location is analogous to the location
     * argument you pass to the pointOnPath function: it is a ratio of distance travelled along the curve.  Distance is the distance in pixels from
     * the point to the curve.
     */
    var _distanceFromCurve = function(point, curve) {
        var candidates = [],
            w = _convertToBezier(point, curve),
            degree = curve.length - 1, higherDegree = (2 * degree) - 1,
            numSolutions = _findRoots(w, higherDegree, candidates, 0),
            v = Vectors.subtract(point, curve[0]), dist = Vectors.square(v), t = 0.0;

        for (var i = 0; i < numSolutions; i++) {
            v = Vectors.subtract(point, _bezier(curve, degree, candidates[i], null, null));
            var newDist = Vectors.square(v);
            if (newDist < dist) {
                dist = newDist;
                t = candidates[i];
            }
        }
        v = Vectors.subtract(point, curve[degree]);
        newDist = Vectors.square(v);
        if (newDist < dist) {
            dist = newDist;
            t = 1.0;
        }
        return {location:t, distance:dist};
    };
    /**
     * finds the nearest point on the curve to the given point.
     */
    var _nearestPointOnCurve = function(point, curve) {
        var td = _distanceFromCurve(point, curve);
        return {point:_bezier(curve, curve.length - 1, td.location, null, null), location:td.location};
    };
    var _convertToBezier = function(point, curve) {
        var degree = curve.length - 1, higherDegree = (2 * degree) - 1,
            c = [], d = [], cdTable = [], w = [],
            z = [ [1.0, 0.6, 0.3, 0.1], [0.4, 0.6, 0.6, 0.4], [0.1, 0.3, 0.6, 1.0] ];

        for (var i = 0; i <= degree; i++) c[i] = Vectors.subtract(curve[i], point);
        for (var i = 0; i <= degree - 1; i++) {
            d[i] = Vectors.subtract(curve[i+1], curve[i]);
            d[i] = Vectors.scale(d[i], 3.0);
        }
        for (var row = 0; row <= degree - 1; row++) {
            for (var column = 0; column <= degree; column++) {
                if (!cdTable[row]) cdTable[row] = [];
                cdTable[row][column] = Vectors.dotProduct(d[row], c[column]);
            }
        }
        for (i = 0; i <= higherDegree; i++) {
            if (!w[i]) w[i] = [];
            w[i].y = 0.0;
            w[i].x = parseFloat(i) / higherDegree;
        }
        var n = degree, m = degree-1;
        for (var k = 0; k <= n + m; k++) {
            var lb = Math.max(0, k - m),
                ub = Math.min(k, n);
            for (i = lb; i <= ub; i++) {
                j = k - i;
                w[i+j].y += cdTable[j][i] * z[j][i];
            }
        }
        return w;
    };
    /**
     * counts how many roots there are.
     */
    var _findRoots = function(w, degree, t, depth) {
        var left = [], right = [],
            left_count, right_count,
            left_t = [], right_t = [];

        switch (_getCrossingCount(w, degree)) {
            case 0 : {
                return 0;
            }
            case 1 : {
                if (depth >= maxRecursion) {
                    t[0] = (w[0].x + w[degree].x) / 2.0;
                    return 1;
                }
                if (_isFlatEnough(w, degree)) {
                    t[0] = _computeXIntercept(w, degree);
                    return 1;
                }
                break;
            }
        }
        _bezier(w, degree, 0.5, left, right);
        left_count  = _findRoots(left,  degree, left_t, depth+1);
        right_count = _findRoots(right, degree, right_t, depth+1);
        for (var i = 0; i < left_count; i++) t[i] = left_t[i];
        for (var i = 0; i < right_count; i++) t[i+left_count] = right_t[i];
        return (left_count+right_count);
    };
    var _getCrossingCount = function(curve, degree) {
        var n_crossings = 0, sign, old_sign;
        sign = old_sign = Math.sgn(curve[0].y);
        for (var i = 1; i <= degree; i++) {
            sign = Math.sgn(curve[i].y);
            if (sign != old_sign) n_crossings++;
            old_sign = sign;
        }
        return n_crossings;
    };
    var _isFlatEnough = function(curve, degree) {
        var  error,
            intercept_1, intercept_2, left_intercept, right_intercept,
            a, b, c, det, dInv, a1, b1, c1, a2, b2, c2;
        a = curve[0].y - curve[degree].y;
        b = curve[degree].x - curve[0].x;
        c = curve[0].x * curve[degree].y - curve[degree].x * curve[0].y;

        var max_distance_above = max_distance_below = 0.0;

        for (var i = 1; i < degree; i++) {
            var value = a * curve[i].x + b * curve[i].y + c;
            if (value > max_distance_above)
                max_distance_above = value;
            else if (value < max_distance_below)
                max_distance_below = value;
        }

        a1 = 0.0; b1 = 1.0; c1 = 0.0; a2 = a; b2 = b;
        c2 = c - max_distance_above;
        det = a1 * b2 - a2 * b1;
        dInv = 1.0/det;
        intercept_1 = (b1 * c2 - b2 * c1) * dInv;
        a2 = a; b2 = b; c2 = c - max_distance_below;
        det = a1 * b2 - a2 * b1;
        dInv = 1.0/det;
        intercept_2 = (b1 * c2 - b2 * c1) * dInv;
        left_intercept = Math.min(intercept_1, intercept_2);
        right_intercept = Math.max(intercept_1, intercept_2);
        error = right_intercept - left_intercept;
        return (error < flatnessTolerance)? 1 : 0;
    };
    var _computeXIntercept = function(curve, degree) {
        var XLK = 1.0, YLK = 0.0,
            XNM = curve[degree].x - curve[0].x, YNM = curve[degree].y - curve[0].y,
            XMK = curve[0].x - 0.0, YMK = curve[0].y - 0.0,
            det = XNM*YLK - YNM*XLK, detInv = 1.0/det,
            S = (XNM*YMK - YNM*XMK) * detInv;
        return 0.0 + XLK * S;
    };
    var _bezier = function(curve, degree, t, left, right) {
        var temp = [[]];
        for (var j =0; j <= degree; j++) temp[0][j] = curve[j];
        for (var i = 1; i <= degree; i++) {
            for (var j =0 ; j <= degree - i; j++) {
                if (!temp[i]) temp[i] = [];
                if (!temp[i][j]) temp[i][j] = {};
                temp[i][j].x = (1.0 - t) * temp[i-1][j].x + t * temp[i-1][j+1].x;
                temp[i][j].y = (1.0 - t) * temp[i-1][j].y + t * temp[i-1][j+1].y;
            }
        }
        if (left != null)
            for (j = 0; j <= degree; j++) left[j]  = temp[j][0];
        if (right != null)
            for (j = 0; j <= degree; j++) right[j] = temp[degree-j][j];

        return (temp[degree][0]);
    };

    var _curveFunctionCache = {};
    var _getCurveFunctions = function(order) {
        var fns = _curveFunctionCache[order];
        if (!fns) {
            fns = [];
            var f_term = function() { return function(t) { return Math.pow(t, order); }; },
                l_term = function() { return function(t) { return Math.pow((1-t), order); }; },
                c_term = function(c) { return function(t) { return c; }; },
                t_term = function() { return function(t) { return t; }; },
                one_minus_t_term = function() { return function(t) { return 1-t; }; },
                _termFunc = function(terms) {
                    return function(t) {
                        var p = 1;
                        for (var i = 0; i < terms.length; i++) p = p * terms[i](t);
                        return p;
                    };
                };

            fns.push(new f_term());  // first is t to the power of the curve order
            for (var i = 1; i < order; i++) {
                var terms = [new c_term(order)];
                for (var j = 0 ; j < (order - i); j++) terms.push(new t_term());
                for (var j = 0 ; j < i; j++) terms.push(new one_minus_t_term());
                fns.push(new _termFunc(terms));
            }
            fns.push(new l_term());  // last is (1-t) to the power of the curve order

            _curveFunctionCache[order] = fns;
        }

        return fns;
    };


    /**
     * calculates a point on the curve, for a Bezier of arbitrary order.
     * @param curve an array of control points, eg [{x:10,y:20}, {x:50,y:50}, {x:100,y:100}, {x:120,y:100}].  For a cubic bezier this should have four points.
     * @param location a decimal indicating the distance along the curve the point should be located at.  this is the distance along the curve as it travels, taking the way it bends into account.  should be a number from 0 to 1, inclusive.
     */
    var _pointOnPath = function(curve, location) {
        var cc = _getCurveFunctions(curve.length - 1),
            _x = 0, _y = 0;
        for (var i = 0; i < curve.length ; i++) {
            _x = _x + (curve[i].x * cc[i](location));
            _y = _y + (curve[i].y * cc[i](location));
        }

        return {x:_x, y:_y};
    };

    var _dist = function(p1,p2) {
        return Math.sqrt(Math.pow(p1.x - p2.x, 2) + Math.pow(p1.y - p2.y, 2));
    };

    var _isPoint = function(curve) {
        return curve[0].x == curve[1].x && curve[0].y == curve[1].y;
    };

    /**
     * finds the point that is 'distance' along the path from 'location'.  this method returns both the x,y location of the point and also
     * its 'location' (proportion of travel along the path); the method below - _pointAlongPathFrom - calls this method and just returns the
     * point.
     */
    var _pointAlongPath = function(curve, location, distance) {

        if (_isPoint(curve)) {
            return {
                point:curve[0],
                location:location
            };
        }

        var prev = _pointOnPath(curve, location),
            tally = 0,
            curLoc = location,
            direction = distance > 0 ? 1 : -1,
            cur = null;

        while (tally < Math.abs(distance)) {
            curLoc += (0.005 * direction);
            cur = _pointOnPath(curve, curLoc);
            tally += _dist(cur, prev);
            prev = cur;
        }
        return {point:cur, location:curLoc};
    };

    var _length = function(curve) {
        if (_isPoint(curve)) return 0;

        var prev = _pointOnPath(curve, 0),
            tally = 0,
            curLoc = 0,
            direction = 1,
            cur = null;

        while (curLoc < 1) {
            curLoc += (0.005 * direction);
            cur = _pointOnPath(curve, curLoc);
            tally += _dist(cur, prev);
            prev = cur;
        }
        return tally;
    };

    /**
     * finds the point that is 'distance' along the path from 'location'.
     */
    var _pointAlongPathFrom = function(curve, location, distance) {
        return _pointAlongPath(curve, location, distance).point;
    };

    /**
     * finds the location that is 'distance' along the path from 'location'.
     */
    var _locationAlongPathFrom = function(curve, location, distance) {
        return _pointAlongPath(curve, location, distance).location;
    };

    /**
     * returns the gradient of the curve at the given location, which is a decimal between 0 and 1 inclusive.
     *
     * thanks // http://bimixual.org/AnimationLibrary/beziertangents.html
     */
    var _gradientAtPoint = function(curve, location) {
        var p1 = _pointOnPath(curve, location),
            p2 = _pointOnPath(curve.slice(0, curve.length - 1), location),
            dy = p2.y - p1.y, dx = p2.x - p1.x;
        return dy == 0 ? Infinity : Math.atan(dy / dx);
    };

    /**
     returns the gradient of the curve at the point which is 'distance' from the given location.
     if this point is greater than location 1, the gradient at location 1 is returned.
     if this point is less than location 0, the gradient at location 0 is returned.
     */
    var _gradientAtPointAlongPathFrom = function(curve, location, distance) {
        var p = _pointAlongPath(curve, location, distance);
        if (p.location > 1) p.location = 1;
        if (p.location < 0) p.location = 0;
        return _gradientAtPoint(curve, p.location);
    };

    /**
     * calculates a line that is 'length' pixels long, perpendicular to, and centered on, the path at 'distance' pixels from the given location.
     * if distance is not supplied, the perpendicular for the given location is computed (ie. we set distance to zero).
     */
    var _perpendicularToPathAt = function(curve, location, length, distance) {
        distance = distance == null ? 0 : distance;
        var p = _pointAlongPath(curve, location, distance),
            m = _gradientAtPoint(curve, p.location),
            _theta2 = Math.atan(-1 / m),
            y =  length / 2 * Math.sin(_theta2),
            x =  length / 2 * Math.cos(_theta2);
        return [{x:p.point.x + x, y:p.point.y + y}, {x:p.point.x - x, y:p.point.y - y}];
    };

    var jsBezier = this.jsBezier = {
        distanceFromCurve : _distanceFromCurve,
        gradientAtPoint : _gradientAtPoint,
        gradientAtPointAlongCurveFrom : _gradientAtPointAlongPathFrom,
        nearestPointOnCurve : _nearestPointOnCurve,
        pointOnCurve : _pointOnPath,
        pointAlongCurveFrom : _pointAlongPathFrom,
        perpendicularToCurveAt : _perpendicularToPathAt,
        locationAlongCurveFrom:_locationAlongPathFrom,
        getLength:_length,
        version:"0.9.0"
    };

    if (true) {
        exports.jsBezier = jsBezier;
    }

}).call(typeof window !== 'undefined' ? window : this);

/**
 * Biltong v0.4.0
 *
 * Various geometry functions written as part of jsPlumb and perhaps useful for others.
 *
 * Copyright (c) 2017 jsPlumb
 * https://jsplumbtoolkit.com
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
;(function() {

    "use strict";
    var root = this;

    var Biltong = root.Biltong = {
        version:"0.4.0"
    };

    if (true) {
        exports.Biltong = Biltong;
    }

    var _isa = function(a) { return Object.prototype.toString.call(a) === "[object Array]"; },
        _pointHelper = function(p1, p2, fn) {
            p1 = _isa(p1) ? p1 : [p1.x, p1.y];
            p2 = _isa(p2) ? p2 : [p2.x, p2.y];
            return fn(p1, p2);
        },
        /**
         * @name Biltong.gradient
         * @function
         * @desc Calculates the gradient of a line between the two points.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Float} The gradient of a line between the two points.
         */
        _gradient = Biltong.gradient = function(p1, p2) {
            return _pointHelper(p1, p2, function(_p1, _p2) {
                if (_p2[0] == _p1[0])
                    return _p2[1] > _p1[1] ? Infinity : -Infinity;
                else if (_p2[1] == _p1[1])
                    return _p2[0] > _p1[0] ? 0 : -0;
                else
                    return (_p2[1] - _p1[1]) / (_p2[0] - _p1[0]);
            });
        },
        /**
         * @name Biltong.normal
         * @function
         * @desc Calculates the gradient of a normal to a line between the two points.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Float} The gradient of a normal to a line between the two points.
         */
        _normal = Biltong.normal = function(p1, p2) {
            return -1 / _gradient(p1, p2);
        },
        /**
         * @name Biltong.lineLength
         * @function
         * @desc Calculates the length of a line between the two points.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Float} The length of a line between the two points.
         */
        _lineLength = Biltong.lineLength = function(p1, p2) {
            return _pointHelper(p1, p2, function(_p1, _p2) {
                return Math.sqrt(Math.pow(_p2[1] - _p1[1], 2) + Math.pow(_p2[0] - _p1[0], 2));
            });
        },
        /**
         * @name Biltong.quadrant
         * @function
         * @desc Calculates the quadrant in which the angle between the two points lies.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Integer} The quadrant - 1 for upper right, 2 for lower right, 3 for lower left, 4 for upper left.
         */
        _quadrant = Biltong.quadrant = function(p1, p2) {
            return _pointHelper(p1, p2, function(_p1, _p2) {
                if (_p2[0] > _p1[0]) {
                    return (_p2[1] > _p1[1]) ? 2 : 1;
                }
                else if (_p2[0] == _p1[0]) {
                    return _p2[1] > _p1[1] ? 2 : 1;
                }
                else {
                    return (_p2[1] > _p1[1]) ? 3 : 4;
                }
            });
        },
        /**
         * @name Biltong.theta
         * @function
         * @desc Calculates the angle between the two points.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Float} The angle between the two points.
         */
        _theta = Biltong.theta = function(p1, p2) {
            return _pointHelper(p1, p2, function(_p1, _p2) {
                var m = _gradient(_p1, _p2),
                    t = Math.atan(m),
                    s = _quadrant(_p1, _p2);
                if ((s == 4 || s== 3)) t += Math.PI;
                if (t < 0) t += (2 * Math.PI);

                return t;
            });
        },
        /**
         * @name Biltong.intersects
         * @function
         * @desc Calculates whether or not the two rectangles intersect.
         * @param {Rectangle} r1 First rectangle, as a js object in the form `{x:.., y:.., w:.., h:..}`
         * @param {Rectangle} r2 Second rectangle, as a js object in the form `{x:.., y:.., w:.., h:..}`
         * @return {Boolean} True if the rectangles intersect, false otherwise.
         */
        _intersects = Biltong.intersects = function(r1, r2) {
            var x1 = r1.x, x2 = r1.x + r1.w, y1 = r1.y, y2 = r1.y + r1.h,
                a1 = r2.x, a2 = r2.x + r2.w, b1 = r2.y, b2 = r2.y + r2.h;

            return  ( (x1 <= a1 && a1 <= x2) && (y1 <= b1 && b1 <= y2) ) ||
                ( (x1 <= a2 && a2 <= x2) && (y1 <= b1 && b1 <= y2) ) ||
                ( (x1 <= a1 && a1 <= x2) && (y1 <= b2 && b2 <= y2) ) ||
                ( (x1 <= a2 && a1 <= x2) && (y1 <= b2 && b2 <= y2) ) ||
                ( (a1 <= x1 && x1 <= a2) && (b1 <= y1 && y1 <= b2) ) ||
                ( (a1 <= x2 && x2 <= a2) && (b1 <= y1 && y1 <= b2) ) ||
                ( (a1 <= x1 && x1 <= a2) && (b1 <= y2 && y2 <= b2) ) ||
                ( (a1 <= x2 && x1 <= a2) && (b1 <= y2 && y2 <= b2) );
        },
        /**
         * @name Biltong.encloses
         * @function
         * @desc Calculates whether or not r2 is completely enclosed by r1.
         * @param {Rectangle} r1 First rectangle, as a js object in the form `{x:.., y:.., w:.., h:..}`
         * @param {Rectangle} r2 Second rectangle, as a js object in the form `{x:.., y:.., w:.., h:..}`
         * @param {Boolean} [allowSharedEdges=false] If true, the concept of enclosure allows for one or more edges to be shared by the two rectangles.
         * @return {Boolean} True if r1 encloses r2, false otherwise.
         */
        _encloses = Biltong.encloses = function(r1, r2, allowSharedEdges) {
            var x1 = r1.x, x2 = r1.x + r1.w, y1 = r1.y, y2 = r1.y + r1.h,
                a1 = r2.x, a2 = r2.x + r2.w, b1 = r2.y, b2 = r2.y + r2.h,
                c = function(v1, v2, v3, v4) { return allowSharedEdges ? v1 <= v2 && v3>= v4 : v1 < v2 && v3 > v4; };

            return c(x1,a1,x2,a2) && c(y1,b1,y2,b2);
        },
        _segmentMultipliers = [null, [1, -1], [1, 1], [-1, 1], [-1, -1] ],
        _inverseSegmentMultipliers = [null, [-1, -1], [-1, 1], [1, 1], [1, -1] ],
        /**
         * @name Biltong.pointOnLine
         * @function
         * @desc Calculates a point on the line from `fromPoint` to `toPoint` that is `distance` units along the length of the line.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Point} Point on the line, in the form `{ x:..., y:... }`.
         */
        _pointOnLine = Biltong.pointOnLine = function(fromPoint, toPoint, distance) {
            var m = _gradient(fromPoint, toPoint),
                s = _quadrant(fromPoint, toPoint),
                segmentMultiplier = distance > 0 ? _segmentMultipliers[s] : _inverseSegmentMultipliers[s],
                theta = Math.atan(m),
                y = Math.abs(distance * Math.sin(theta)) * segmentMultiplier[1],
                x =  Math.abs(distance * Math.cos(theta)) * segmentMultiplier[0];
            return { x:fromPoint.x + x, y:fromPoint.y + y };
        },
        /**
         * @name Biltong.perpendicularLineTo
         * @function
         * @desc Calculates a line of length `length` that is perpendicular to the line from `fromPoint` to `toPoint` and passes through `toPoint`.
         * @param {Point} p1 First point, either as a 2 entry array or object with `left` and `top` properties.
         * @param {Point} p2 Second point, either as a 2 entry array or object with `left` and `top` properties.
         * @return {Line} Perpendicular line, in the form `[ { x:..., y:... }, { x:..., y:... } ]`.
         */
        _perpendicularLineTo = Biltong.perpendicularLineTo = function(fromPoint, toPoint, length) {
            var m = _gradient(fromPoint, toPoint),
                theta2 = Math.atan(-1 / m),
                y =  length / 2 * Math.sin(theta2),
                x =  length / 2 * Math.cos(theta2);
            return [{x:toPoint.x + x, y:toPoint.y + y}, {x:toPoint.x - x, y:toPoint.y - y}];
        };
}).call(typeof window !== 'undefined' ? window : this);
;
(function () {

    "use strict";

    var root = this,
        Sniff = {
            android: navigator.userAgent.toLowerCase().indexOf("android") > -1
        },
        matchesSelector = function (el, selector, ctx) {
            ctx = ctx || el.parentNode;
            var possibles = ctx.querySelectorAll(selector);
            for (var i = 0; i < possibles.length; i++) {
                if (possibles[i] === el) {
                    return true;
                }
            }
            return false;
        },
        _gel = function (el) {
            return (typeof el == "string" || el.constructor === String) ? document.getElementById(el) : el;
        },
        _t = function (e) {
            return e.srcElement || e.target;
        },
    //
    // gets path info for the given event - the path from target to obj, in the event's bubble chain. if doCompute
    // is false we just return target for the path.
    //
        _pi = function(e, target, obj, doCompute) {
            if (!doCompute) return { path:[target], end:1 };
            else if (typeof e.path !== "undefined" && e.path.indexOf) {
                return { path: e.path, end: e.path.indexOf(obj) };
            } else {
                var out = { path:[], end:-1 }, _one = function(el) {
                    out.path.push(el);
                    if (el === obj) {
                        out.end = out.path.length - 1;
                    }
                    else if (el.parentNode != null) {
                        _one(el.parentNode)
                    }
                };
                _one(target);
                return out;
            }
        },
        _d = function (l, fn) {
            for (var i = 0, j = l.length; i < j; i++) {
                if (l[i] == fn) break;
            }
            if (i < l.length) l.splice(i, 1);
        },
        guid = 1,
    //
    // this function generates a guid for every handler, sets it on the handler, then adds
    // it to the associated object's map of handlers for the given event. this is what enables us
    // to unbind all events of some type, or all events (the second of which can be requested by the user,
    // but it also used by Mottle when an element is removed.)
        _store = function (obj, event, fn) {
            var g = guid++;
            obj.__ta = obj.__ta || {};
            obj.__ta[event] = obj.__ta[event] || {};
            // store each handler with a unique guid.
            obj.__ta[event][g] = fn;
            // set the guid on the handler.
            fn.__tauid = g;
            return g;
        },
        _unstore = function (obj, event, fn) {
            obj.__ta && obj.__ta[event] && delete obj.__ta[event][fn.__tauid];
            // a handler might have attached extra functions, so we unbind those too.
            if (fn.__taExtra) {
                for (var i = 0; i < fn.__taExtra.length; i++) {
                    _unbind(obj, fn.__taExtra[i][0], fn.__taExtra[i][1]);
                }
                fn.__taExtra.length = 0;
            }
            // a handler might have attached an unstore callback
            fn.__taUnstore && fn.__taUnstore();
        },
        _curryChildFilter = function (children, obj, fn, evt) {
            if (children == null) return fn;
            else {
                var c = children.split(","),
                    _fn = function (e) {
                        _fn.__tauid = fn.__tauid;
                        var t = _t(e), target = t;  // t is the target element on which the event occurred. it is the
                        // element we will wish to pass to any callbacks.
                        var pathInfo = _pi(e, t, obj, children != null)
                        if (pathInfo.end != -1) {
                            for (var p = 0; p < pathInfo.end; p++) {
                                target = pathInfo.path[p];
                                for (var i = 0; i < c.length; i++) {
                                    if (matchesSelector(target, c[i], obj)) {
                                        fn.apply(target, arguments);
                                    }
                                }
                            }
                        }
                    };
                registerExtraFunction(fn, evt, _fn);
                return _fn;
            }
        },
    //
    // registers an 'extra' function on some event listener function we were given - a function that we
    // created and bound to the element as part of our housekeeping, and which we want to unbind and remove
    // whenever the given function is unbound.
        registerExtraFunction = function (fn, evt, newFn) {
            fn.__taExtra = fn.__taExtra || [];
            fn.__taExtra.push([evt, newFn]);
        },
        DefaultHandler = function (obj, evt, fn, children) {
            if (isTouchDevice && touchMap[evt]) {
                var tfn = _curryChildFilter(children, obj, fn, touchMap[evt]);
                _bind(obj, touchMap[evt], tfn , fn);
            }
            if (evt === "focus" && obj.getAttribute("tabindex") == null) {
                obj.setAttribute("tabindex", "1");
            }
            _bind(obj, evt, _curryChildFilter(children, obj, fn, evt), fn);
        },
        SmartClickHandler = function (obj, evt, fn, children) {
            if (obj.__taSmartClicks == null) {
                var down = function (e) {
                        obj.__tad = _pageLocation(e);
                    },
                    up = function (e) {
                        obj.__tau = _pageLocation(e);
                    },
                    click = function (e) {
                        if (obj.__tad && obj.__tau && obj.__tad[0] === obj.__tau[0] && obj.__tad[1] === obj.__tau[1]) {
                            for (var i = 0; i < obj.__taSmartClicks.length; i++)
                                obj.__taSmartClicks[i].apply(_t(e), [ e ]);
                        }
                    };
                DefaultHandler(obj, "mousedown", down, children);
                DefaultHandler(obj, "mouseup", up, children);
                DefaultHandler(obj, "click", click, children);
                obj.__taSmartClicks = [];
            }

            // store in the list of callbacks
            obj.__taSmartClicks.push(fn);
            // the unstore function removes this function from the object's listener list for this type.
            fn.__taUnstore = function () {
                _d(obj.__taSmartClicks, fn);
            };
        },
        _tapProfiles = {
            "tap": {touches: 1, taps: 1},
            "dbltap": {touches: 1, taps: 2},
            "contextmenu": {touches: 2, taps: 1}
        },
        TapHandler = function (clickThreshold, dblClickThreshold) {
            return function (obj, evt, fn, children) {
                // if event is contextmenu, for devices which are mouse only, we want to
                // use the default bind.
                if (evt == "contextmenu" && isMouseDevice)
                    DefaultHandler(obj, evt, fn, children);
                else {
                    // the issue here is that this down handler gets registered only for the
                    // child nodes in the first registration. in fact it should be registered with
                    // no child selector and then on down we should cycle through the registered
                    // functions to see if one of them matches. on mouseup we should execute ALL of
                    // the functions whose children are either null or match the element.
                    if (obj.__taTapHandler == null) {
                        var tt = obj.__taTapHandler = {
                            tap: [],
                            dbltap: [],
                            contextmenu: [],
                            down: false,
                            taps: 0,
                            downSelectors: []
                        };
                        var down = function (e) {
                                var target = _t(e), pathInfo = _pi(e, target, obj, children != null), finished = false;
                                for (var p = 0; p < pathInfo.end; p++) {
                                    if (finished) return;
                                    target = pathInfo.path[p];
                                    for (var i = 0; i < tt.downSelectors.length; i++) {
                                        if (tt.downSelectors[i] == null || matchesSelector(target, tt.downSelectors[i], obj)) {
                                            tt.down = true;
                                            setTimeout(clearSingle, clickThreshold);
                                            setTimeout(clearDouble, dblClickThreshold);
                                            finished = true;
                                            break; // we only need one match on mousedown
                                        }
                                    }
                                }
                            },
                            up = function (e) {
                                if (tt.down) {
                                    var target = _t(e), currentTarget, pathInfo;
                                    tt.taps++;
                                    var tc = _touchCount(e);
                                    for (var eventId in _tapProfiles) {
                                        if (_tapProfiles.hasOwnProperty(eventId)) {
                                            var p = _tapProfiles[eventId];
                                            if (p.touches === tc && (p.taps === 1 || p.taps === tt.taps)) {
                                                for (var i = 0; i < tt[eventId].length; i++) {
                                                    pathInfo = _pi(e, target, obj, tt[eventId][i][1] != null);
                                                    for (var pLoop = 0; pLoop < pathInfo.end; pLoop++) {
                                                        currentTarget = pathInfo.path[pLoop];
                                                        // this is a single event registration handler.
                                                        if (tt[eventId][i][1] == null || matchesSelector(currentTarget, tt[eventId][i][1], obj)) {
                                                            tt[eventId][i][0].apply(currentTarget, [ e ]);
                                                            break;
                                                        }
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }
                            },
                            clearSingle = function () {
                                tt.down = false;
                            },
                            clearDouble = function () {
                                tt.taps = 0;
                            };

                        DefaultHandler(obj, "mousedown", down);
                        DefaultHandler(obj, "mouseup", up);
                    }
                    // add this child selector (it can be null, that's fine).
                    obj.__taTapHandler.downSelectors.push(children);

                    obj.__taTapHandler[evt].push([fn, children]);
                    // the unstore function removes this function from the object's listener list for this type.
                    fn.__taUnstore = function () {
                        _d(obj.__taTapHandler[evt], fn);
                    };
                }
            };
        },
        meeHelper = function (type, evt, obj, target) {
            for (var i in obj.__tamee[type]) {
                if (obj.__tamee[type].hasOwnProperty(i)) {
                    obj.__tamee[type][i].apply(target, [ evt ]);
                }
            }
        },
        MouseEnterExitHandler = function () {
            var activeElements = [];
            return function (obj, evt, fn, children) {
                if (!obj.__tamee) {
                    // __tamee holds a flag saying whether the mouse is currently "in" the element, and a list of
                    // both mouseenter and mouseexit functions.
                    obj.__tamee = { over: false, mouseenter: [], mouseexit: [] };
                    // register over and out functions
                    var over = function (e) {
                            var t = _t(e);
                            if ((children == null && (t == obj && !obj.__tamee.over)) || (matchesSelector(t, children, obj) && (t.__tamee == null || !t.__tamee.over))) {
                                meeHelper("mouseenter", e, obj, t);
                                t.__tamee = t.__tamee || {};
                                t.__tamee.over = true;
                                activeElements.push(t);
                            }
                        },
                        out = function (e) {
                            var t = _t(e);
                            // is the current target one of the activeElements? and is the
                            // related target NOT a descendant of it?
                            for (var i = 0; i < activeElements.length; i++) {
                                if (t == activeElements[i] && !matchesSelector((e.relatedTarget || e.toElement), "*", t)) {
                                    t.__tamee.over = false;
                                    activeElements.splice(i, 1);
                                    meeHelper("mouseexit", e, obj, t);
                                }
                            }
                        };

                    _bind(obj, "mouseover", _curryChildFilter(children, obj, over, "mouseover"), over);
                    _bind(obj, "mouseout", _curryChildFilter(children, obj, out, "mouseout"), out);
                }

                fn.__taUnstore = function () {
                    delete obj.__tamee[evt][fn.__tauid];
                };

                _store(obj, evt, fn);
                obj.__tamee[evt][fn.__tauid] = fn;
            };
        },
        isTouchDevice = "ontouchstart" in document.documentElement,
        isMouseDevice = "onmousedown" in document.documentElement,
        touchMap = { "mousedown": "touchstart", "mouseup": "touchend", "mousemove": "touchmove" },
        touchstart = "touchstart", touchend = "touchend", touchmove = "touchmove",
        iev = (function () {
            var rv = -1;
            if (navigator.appName == 'Microsoft Internet Explorer') {
                var ua = navigator.userAgent,
                    re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
                if (re.exec(ua) != null)
                    rv = parseFloat(RegExp.$1);
            }
            return rv;
        })(),
        isIELT9 = iev > -1 && iev < 9,
        _genLoc = function (e, prefix) {
            if (e == null) return [ 0, 0 ];
            var ts = _touches(e), t = _getTouch(ts, 0);
            return [t[prefix + "X"], t[prefix + "Y"]];
        },
        _pageLocation = function (e) {
            if (e == null) return [ 0, 0 ];
            if (isIELT9) {
                return [ e.clientX + document.documentElement.scrollLeft, e.clientY + document.documentElement.scrollTop ];
            }
            else {
                return _genLoc(e, "page");
            }
        },
        _screenLocation = function (e) {
            return _genLoc(e, "screen");
        },
        _clientLocation = function (e) {
            return _genLoc(e, "client");
        },
        _getTouch = function (touches, idx) {
            return touches.item ? touches.item(idx) : touches[idx];
        },
        _touches = function (e) {
            return e.touches && e.touches.length > 0 ? e.touches :
                    e.changedTouches && e.changedTouches.length > 0 ? e.changedTouches :
                    e.targetTouches && e.targetTouches.length > 0 ? e.targetTouches :
                [ e ];
        },
        _touchCount = function (e) {
            return _touches(e).length;
        },
    //http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html
        _bind = function (obj, type, fn, originalFn) {
            _store(obj, type, fn);
            originalFn.__tauid = fn.__tauid;
            if (obj.addEventListener)
                obj.addEventListener(type, fn, false);
            else if (obj.attachEvent) {
                var key = type + fn.__tauid;
                obj["e" + key] = fn;
                // TODO look at replacing with .call(..)
                obj[key] = function () {
                    obj["e" + key] && obj["e" + key](window.event);
                };
                obj.attachEvent("on" + type, obj[key]);
            }
        },
        _unbind = function (obj, type, fn) {
            if (fn == null) return;
            _each(obj, function () {
                var _el = _gel(this);
                _unstore(_el, type, fn);
                // it has been bound if there is a tauid. otherwise it was not bound and we can ignore it.
                if (fn.__tauid != null) {
                    if (_el.removeEventListener) {
                        _el.removeEventListener(type, fn, false);
                        if (isTouchDevice && touchMap[type]) _el.removeEventListener(touchMap[type], fn, false);
                    }
                    else if (this.detachEvent) {
                        var key = type + fn.__tauid;
                        _el[key] && _el.detachEvent("on" + type, _el[key]);
                        _el[key] = null;
                        _el["e" + key] = null;
                    }
                }

                // if a touch event was also registered, deregister now.
                if (fn.__taTouchProxy) {
                    _unbind(obj, fn.__taTouchProxy[1], fn.__taTouchProxy[0]);
                }
            });
        },
        _each = function (obj, fn) {
            if (obj == null) return;
            // if a list (or list-like), use it. if a string, get a list
            // by running the string through querySelectorAll. else, assume
            // it's an Element.
            // obj.top is "unknown" in IE8.
            obj = (typeof Window !== "undefined" && (typeof obj.top !== "unknown" && obj == obj.top)) ? [ obj ] :
                    (typeof obj !== "string") && (obj.tagName == null && obj.length != null) ? obj :
                    typeof obj === "string" ? document.querySelectorAll(obj)
                : [ obj ];

            for (var i = 0; i < obj.length; i++)
                fn.apply(obj[i]);
        };

    /**
     * Mottle offers support for abstracting out the differences
     * between touch and mouse devices, plus "smart click" functionality
     * (don't fire click if the mouse has moved between mousedown and mouseup),
     * and synthesized click/tap events.
     * @class Mottle
     * @constructor
     * @param {Object} params Constructor params
     * @param {Number} [params.clickThreshold=250] Threshold, in milliseconds beyond which a touchstart followed by a touchend is not considered to be a click.
     * @param {Number} [params.dblClickThreshold=450] Threshold, in milliseconds beyond which two successive tap events are not considered to be a click.
     * @param {Boolean} [params.smartClicks=false] If true, won't fire click events if the mouse has moved between mousedown and mouseup. Note that this functionality
     * requires that Mottle consume the mousedown event, and so may not be viable in all use cases.
     */
    root.Mottle = function (params) {
        params = params || {};
        var clickThreshold = params.clickThreshold || 250,
            dblClickThreshold = params.dblClickThreshold || 450,
            mouseEnterExitHandler = new MouseEnterExitHandler(),
            tapHandler = new TapHandler(clickThreshold, dblClickThreshold),
            _smartClicks = params.smartClicks,
            _doBind = function (obj, evt, fn, children) {
                if (fn == null) return;
                _each(obj, function () {
                    var _el = _gel(this);
                    if (_smartClicks && evt === "click")
                        SmartClickHandler(_el, evt, fn, children);
                    else if (evt === "tap" || evt === "dbltap" || evt === "contextmenu") {
                        tapHandler(_el, evt, fn, children);
                    }
                    else if (evt === "mouseenter" || evt == "mouseexit")
                        mouseEnterExitHandler(_el, evt, fn, children);
                    else
                        DefaultHandler(_el, evt, fn, children);
                });
            };

        /**
         * Removes an element from the DOM, and deregisters all event handlers for it. You should use this
         * to ensure you don't leak memory.
         * @method remove
         * @param {String|Element} el Element, or id of the element, to remove.
         * @return {Mottle} The current Mottle instance; you can chain this method.
         */
        this.remove = function (el) {
            _each(el, function () {
                var _el = _gel(this);
                if (_el.__ta) {
                    for (var evt in _el.__ta) {
                        if (_el.__ta.hasOwnProperty(evt)) {
                            for (var h in _el.__ta[evt]) {
                                if (_el.__ta[evt].hasOwnProperty(h))
                                    _unbind(_el, evt, _el.__ta[evt][h]);
                            }
                        }
                    }
                }
                _el.parentNode && _el.parentNode.removeChild(_el);
            });
            return this;
        };

        /**
         * Register an event handler, optionally as a delegate for some set of descendant elements. Note
         * that this method takes either 3 or 4 arguments - if you supply 3 arguments it is assumed you have
         * omitted the `children` parameter, and that the event handler should be bound directly to the given element.
         * @method on
         * @param {Element[]|Element|String} el Either an Element, or a CSS spec for a list of elements, or an array of Elements.
         * @param {String} [children] Comma-delimited list of selectors identifying allowed children.
         * @param {String} event Event ID.
         * @param {Function} fn Event handler function.
         * @return {Mottle} The current Mottle instance; you can chain this method.
         */
        this.on = function (el, event, children, fn) {
            var _el = arguments[0],
                _c = arguments.length == 4 ? arguments[2] : null,
                _e = arguments[1],
                _f = arguments[arguments.length - 1];

            _doBind(_el, _e, _f, _c);
            return this;
        };

        /**
         * Cancel delegate event handling for the given function. Note that unlike with 'on' you do not supply
         * a list of child selectors here: it removes event delegation from all of the child selectors for which the
         * given function was registered (if any).
         * @method off
         * @param {Element[]|Element|String} el Element - or ID of element - from which to remove event listener.
         * @param {String} event Event ID.
         * @param {Function} fn Event handler function.
         * @return {Mottle} The current Mottle instance; you can chain this method.
         */
        this.off = function (el, event, fn) {
            _unbind(el, event, fn);
            return this;
        };

        /**
         * Triggers some event for a given element.
         * @method trigger
         * @param {Element} el Element for which to trigger the event.
         * @param {String} event Event ID.
         * @param {Event} originalEvent The original event. Should be optional of course, but currently is not, due
         * to the jsPlumb use case that caused this method to be added.
         * @param {Object} [payload] Optional object to set as `payload` on the generated event; useful for message passing.
         * @return {Mottle} The current Mottle instance; you can chain this method.
         */
        this.trigger = function (el, event, originalEvent, payload) {
            // MouseEvent undefined in old IE; that's how we know it's a mouse event.  A fine Microsoft paradox.
            var originalIsMouse = isMouseDevice && (typeof MouseEvent === "undefined" || originalEvent == null || originalEvent.constructor === MouseEvent);

            var eventToBind = (isTouchDevice && !isMouseDevice && touchMap[event]) ? touchMap[event] : event,
                bindingAMouseEvent = !(isTouchDevice && !isMouseDevice && touchMap[event]);

            var pl = _pageLocation(originalEvent), sl = _screenLocation(originalEvent), cl = _clientLocation(originalEvent);
            _each(el, function () {
                var _el = _gel(this), evt;
                originalEvent = originalEvent || {
                    screenX: sl[0],
                    screenY: sl[1],
                    clientX: cl[0],
                    clientY: cl[1]
                };

                var _decorate = function (_evt) {
                    if (payload) _evt.payload = payload;
                };

                var eventGenerators = {
                    "TouchEvent": function (evt) {
                        var touch = document.createTouch(window, _el, 0, pl[0], pl[1],
                            sl[0], sl[1],
                            cl[0], cl[1],
                            0, 0, 0, 0);

                        // https://gist.github.com/sstephenson/448808
                        var touches = document.createTouchList(touch);
                        var targetTouches = document.createTouchList(touch);
                        var changedTouches = document.createTouchList(touch);
                        evt.initTouchEvent(eventToBind, true, true, window, null, sl[0], sl[1],
                            cl[0], cl[1], false, false, false, false,
                            touches, targetTouches, changedTouches, 1, 0);
                    },
                    "MouseEvents": function (evt) {
                        evt.initMouseEvent(eventToBind, true, true, window, 0,
                            sl[0], sl[1],
                            cl[0], cl[1],
                            false, false, false, false, 1, _el);

                        if (Sniff.android) {
                            // Android's touch events are not standard.
                            var t = document.createTouch(window, _el, 0, pl[0], pl[1],
                                sl[0], sl[1],
                                cl[0], cl[1],
                                0, 0, 0, 0);

                            evt.touches = evt.targetTouches = evt.changedTouches = document.createTouchList(t);
                        }
                    }
                };

                if (document.createEvent) {

                    var ite = !bindingAMouseEvent && !originalIsMouse && (isTouchDevice && touchMap[event] && !Sniff.android),
                        evtName = ite ? "TouchEvent" : "MouseEvents";

                    evt = document.createEvent(evtName);
                    eventGenerators[evtName](evt);
                    _decorate(evt);
                    _el.dispatchEvent(evt);
                }
                else if (document.createEventObject) {
                    evt = document.createEventObject();
                    evt.eventType = evt.eventName = eventToBind;
                    evt.screenX = sl[0];
                    evt.screenY = sl[1];
                    evt.clientX = cl[0];
                    evt.clientY = cl[1];
                    _decorate(evt);
                    _el.fireEvent('on' + eventToBind, evt);
                }
            });
            return this;
        }
    };

    /**
     * Static method to assist in 'consuming' an element: uses `stopPropagation` where available, or sets
     * `e.returnValue=false` where it is not.
     * @method Mottle.consume
     * @param {Event} e Event to consume
     * @param {Boolean} [doNotPreventDefault=false] If true, does not call `preventDefault()` on the event.
     */
    root.Mottle.consume = function (e, doNotPreventDefault) {
        if (e.stopPropagation)
            e.stopPropagation();
        else
            e.returnValue = false;

        if (!doNotPreventDefault && e.preventDefault)
            e.preventDefault();
    };

    /**
     * Gets the page location corresponding to the given event. For touch events this means get the page location of the first touch.
     * @method Mottle.pageLocation
     * @param {Event} e Event to get page location for.
     * @return {Number[]} [left, top] for the given event.
     */
    root.Mottle.pageLocation = _pageLocation;

    /**
     * Forces touch events to be turned "on". Useful for testing: even if you don't have a touch device, you can still
     * trigger a touch event when this is switched on and it will be captured and acted on.
     * @method setForceTouchEvents
     * @param {Boolean} value If true, force touch events to be on.
     */
    root.Mottle.setForceTouchEvents = function (value) {
        isTouchDevice = value;
    };

    /**
     * Forces mouse events to be turned "on". Useful for testing: even if you don't have a mouse, you can still
     * trigger a mouse event when this is switched on and it will be captured and acted on.
     * @method setForceMouseEvents
     * @param {Boolean} value If true, force mouse events to be on.
     */
    root.Mottle.setForceMouseEvents = function (value) {
        isMouseDevice = value;
    };

    root.Mottle.version = "0.8.0";

    if (true) {
        exports.Mottle = root.Mottle;
    }

}).call(typeof window === "undefined" ? this : window);

/**
 drag/drop functionality for use with jsPlumb but with
 no knowledge of jsPlumb. supports multiple scopes (separated by whitespace), dragging
 multiple elements, constrain to parent, drop filters, drag start filters, custom
 css classes.

 a lot of the functionality of this script is expected to be plugged in:

 addClass
 removeClass

 addEvent
 removeEvent

 getPosition
 setPosition
 getSize

 indexOf
 intersects

 the name came from here:

 http://mrsharpoblunto.github.io/foswig.js/

 copyright 2016 jsPlumb
 */

;(function() {

    "use strict";
    var root = this;

    var _suggest = function(list, item, head) {
        if (list.indexOf(item) === -1) {
            head ? list.unshift(item) : list.push(item);
            return true;
        }
        return false;
    };

    var _vanquish = function(list, item) {
        var idx = list.indexOf(item);
        if (idx !== -1) list.splice(idx, 1);
    };

    var _difference = function(l1, l2) {
        var d = [];
        for (var i = 0; i < l1.length; i++) {
            if (l2.indexOf(l1[i]) === -1)
                d.push(l1[i]);
        }
        return d;
    };

    var _isString = function(f) {
        return f == null ? false : (typeof f === "string" || f.constructor === String);
    };

    var getOffsetRect = function (elem) {
        // (1)
        var box = elem.getBoundingClientRect(),
            body = document.body,
            docElem = document.documentElement,
        // (2)
            scrollTop = window.pageYOffset || docElem.scrollTop || body.scrollTop,
            scrollLeft = window.pageXOffset || docElem.scrollLeft || body.scrollLeft,
        // (3)
            clientTop = docElem.clientTop || body.clientTop || 0,
            clientLeft = docElem.clientLeft || body.clientLeft || 0,
        // (4)
            top  = box.top +  scrollTop - clientTop,
            left = box.left + scrollLeft - clientLeft;

        return { top: Math.round(top), left: Math.round(left) };
    };

    var matchesSelector = function(el, selector, ctx) {
        ctx = ctx || el.parentNode;
        var possibles = ctx.querySelectorAll(selector);
        for (var i = 0; i < possibles.length; i++) {
            if (possibles[i] === el)
                return true;
        }
        return false;
    };

    var iev = (function() {
            var rv = -1;
            if (navigator.appName === 'Microsoft Internet Explorer') {
                var ua = navigator.userAgent,
                    re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
                if (re.exec(ua) != null)
                    rv = parseFloat(RegExp.$1);
            }
            return rv;
        })(),
        DEFAULT_GRID_X = 10,
        DEFAULT_GRID_Y = 10,
        isIELT9 = iev > -1 && iev < 9,
        isIE9 = iev === 9,
        _pl = function(e) {
            if (isIELT9) {
                return [ e.clientX + document.documentElement.scrollLeft, e.clientY + document.documentElement.scrollTop ];
            }
            else {
                var ts = _touches(e), t = _getTouch(ts, 0);
                // for IE9 pageX might be null if the event was synthesized. We try for pageX/pageY first,
                // falling back to clientX/clientY if necessary. In every other browser we want to use pageX/pageY.
                return isIE9 ? [t.pageX || t.clientX, t.pageY || t.clientY] : [t.pageX, t.pageY];
            }
        },
        _getTouch = function(touches, idx) { return touches.item ? touches.item(idx) : touches[idx]; },
        _touches = function(e) {
            return e.touches && e.touches.length > 0 ? e.touches :
                    e.changedTouches && e.changedTouches.length > 0 ? e.changedTouches :
                    e.targetTouches && e.targetTouches.length > 0 ? e.targetTouches :
                [ e ];
        },
        _classes = {
            draggable:"katavorio-draggable",    // draggable elements
            droppable:"katavorio-droppable",    // droppable elements
            drag : "katavorio-drag",            // elements currently being dragged
            selected:"katavorio-drag-selected", // elements in current drag selection
            active : "katavorio-drag-active",   // droppables that are targets of a currently dragged element
            hover : "katavorio-drag-hover",     // droppables over which a matching drag element is hovering
            noSelect : "katavorio-drag-no-select", // added to the body to provide a hook to suppress text selection
            ghostProxy:"katavorio-ghost-proxy",  // added to a ghost proxy element in use when a drag has exited the bounds of its parent.
            clonedDrag:"katavorio-clone-drag"     // added to a node that is a clone of an element created at the start of a drag
        },
        _defaultScope = "katavorio-drag-scope",
        _events = [ "stop", "start", "drag", "drop", "over", "out", "beforeStart" ],
        _devNull = function() {},
        _true = function() { return true; },
        _foreach = function(l, fn, from) {
            for (var i = 0; i < l.length; i++) {
                if (l[i] != from)
                    fn(l[i]);
            }
        },
        _setDroppablesActive = function(dd, val, andHover, drag) {
            _foreach(dd, function(e) {
                e.setActive(val);
                if (val) e.updatePosition();
                if (andHover) e.setHover(drag, val);
            });
        },
        _each = function(obj, fn) {
            if (obj == null) return;
            obj = !_isString(obj) && (obj.tagName == null && obj.length != null) ? obj : [ obj ];
            for (var i = 0; i < obj.length; i++)
                fn.apply(obj[i], [ obj[i] ]);
        },
        _consume = function(e) {
            if (e.stopPropagation) {
                e.stopPropagation();
                e.preventDefault();
            }
            else {
                e.returnValue = false;
            }
        },
        _defaultInputFilterSelector = "input,textarea,select,button,option",
    //
    // filters out events on all input elements, like textarea, checkbox, input, select.
        _inputFilter = function(e, el, _katavorio) {
            var t = e.srcElement || e.target;
            return !matchesSelector(t, _katavorio.getInputFilterSelector(), el);
        };

    var Super = function(el, params, css, scope) {
        this.params = params || {};
        this.el = el;
        this.params.addClass(this.el, this._class);
        this.uuid = _uuid();
        var enabled = true;
        this.setEnabled = function(e) { enabled = e; };
        this.isEnabled = function() { return enabled; };
        this.toggleEnabled = function() { enabled = !enabled; };
        this.setScope = function(scopes) {
            this.scopes = scopes ? scopes.split(/\s+/) : [ scope ];
        };
        this.addScope = function(scopes) {
            var m = {};
            _each(this.scopes, function(s) { m[s] = true;});
            _each(scopes ? scopes.split(/\s+/) : [], function(s) { m[s] = true;});
            this.scopes = [];
            for (var i in m) this.scopes.push(i);
        };
        this.removeScope = function(scopes) {
            var m = {};
            _each(this.scopes, function(s) { m[s] = true;});
            _each(scopes ? scopes.split(/\s+/) : [], function(s) { delete m[s];});
            this.scopes = [];
            for (var i in m) this.scopes.push(i);
        };
        this.toggleScope = function(scopes) {
            var m = {};
            _each(this.scopes, function(s) { m[s] = true;});
            _each(scopes ? scopes.split(/\s+/) : [], function(s) {
                if (m[s]) delete m[s];
                else m[s] = true;
            });
            this.scopes = [];
            for (var i in m) this.scopes.push(i);
        };
        this.setScope(params.scope);
        this.k = params.katavorio;
        return params.katavorio;
    };

    var TRUE = function() { return true; };
    var FALSE = function() { return false; };

    var Drag = function(el, params, css, scope) {
        this._class = css.draggable;
        var k = Super.apply(this, arguments);
        this.rightButtonCanDrag = this.params.rightButtonCanDrag;
        var downAt = [0,0], posAtDown = null, pagePosAtDown = null, pageDelta = [0,0], moving = false,
            consumeStartEvent = this.params.consumeStartEvent !== false,
            dragEl = this.el,
            clone = this.params.clone,
            scroll = this.params.scroll,
            _multipleDrop = params.multipleDrop !== false,
            isConstrained = false,
            useGhostProxy = params.ghostProxy === true ? TRUE : params.ghostProxy && typeof params.ghostProxy === "function" ? params.ghostProxy : FALSE,
            ghostProxy = function(el) { return el.cloneNode(true); };

        var snapThreshold = params.snapThreshold,
            _snap = function(pos, gridX, gridY, thresholdX, thresholdY) {
                var _dx = Math.floor(pos[0] / gridX),
                    _dxl = gridX * _dx,
                    _dxt = _dxl + gridX,
                    _x = Math.abs(pos[0] - _dxl) <= thresholdX ? _dxl : Math.abs(_dxt - pos[0]) <= thresholdX ? _dxt : pos[0];

                var _dy = Math.floor(pos[1] / gridY),
                    _dyl = gridY * _dy,
                    _dyt = _dyl + gridY,
                    _y = Math.abs(pos[1] - _dyl) <= thresholdY ? _dyl : Math.abs(_dyt - pos[1]) <= thresholdY ? _dyt : pos[1];

                return [ _x, _y];
            };

        this.posses = [];
        this.posseRoles = {};

        this.toGrid = function(pos) {
            if (this.params.grid == null) {
                return pos;
            }
            else {
                var tx = this.params.grid ? this.params.grid[0] / 2 : snapThreshold ? snapThreshold : DEFAULT_GRID_X / 2,
                    ty = this.params.grid ? this.params.grid[1] / 2 : snapThreshold ? snapThreshold : DEFAULT_GRID_Y / 2;

                return _snap(pos, this.params.grid[0], this.params.grid[1], tx, ty);
            }
        };

        this.snap = function(x, y) {
            if (dragEl == null) return;
            x = x || (this.params.grid ? this.params.grid[0] : DEFAULT_GRID_X);
            y = y || (this.params.grid ? this.params.grid[1] : DEFAULT_GRID_Y);
            var p = this.params.getPosition(dragEl),
                tx = this.params.grid ? this.params.grid[0] / 2 : snapThreshold,
                ty = this.params.grid ? this.params.grid[1] / 2 : snapThreshold;

            this.params.setPosition(dragEl, _snap(p, x, y, tx, ty));
        };

        this.setUseGhostProxy = function(val) {
            useGhostProxy = val ? TRUE : FALSE;
        };

        var constrain;
        var negativeFilter = function(pos) {
            return (params.allowNegative === false) ? [ Math.max (0, pos[0]), Math.max(0, pos[1]) ] : pos;
        };

        var _setConstrain = function(value) {
            constrain = typeof value === "function" ? value : value ? function(pos) {
                return negativeFilter([
                    Math.max(0, Math.min(constrainRect.w - this.size[0], pos[0])),
                    Math.max(0, Math.min(constrainRect.h - this.size[1], pos[1]))
                ]);
            }.bind(this) : function(pos) { return negativeFilter(pos); };
        }.bind(this);

        _setConstrain(typeof this.params.constrain === "function" ? this.params.constrain  : (this.params.constrain || this.params.containment));


        /**
         * Sets whether or not the Drag is constrained. A value of 'true' means constrain to parent bounds; a function
         * will be executed and returns true if the position is allowed.
         * @param value
         */
        this.setConstrain = function(value) {
            _setConstrain(value);
        };

        var revertFunction;
        /**
         * Sets a function to call on drag stop, which, if it returns true, indicates that the given element should
         * revert to its position before the previous drag.
         * @param fn
         */
        this.setRevert = function(fn) {
            revertFunction = fn;
        };

        var _assignId = function(obj) {
                if (typeof obj === "function") {
                    obj._katavorioId = _uuid();
                    return obj._katavorioId;
                } else {
                    return obj;
                }
            },
        // a map of { spec -> [ fn, exclusion ] } entries.
            _filters = {},
            _testFilter = function(e) {
                for (var key in _filters) {
                    var f = _filters[key];
                    var rv = f[0](e);
                    if (f[1]) rv = !rv;
                    if (!rv) return false;
                }
                return true;
            },
            _setFilter = this.setFilter = function(f, _exclude) {
                if (f) {
                    var key = _assignId(f);
                    _filters[key] = [
                        function(e) {
                            var t = e.srcElement || e.target, m;
                            if (_isString(f)) {
                                m = matchesSelector(t, f, el);
                            }
                            else if (typeof f === "function") {
                                m = f(e, el);
                            }
                            return m;
                        },
                            _exclude !== false
                    ];

                }
            },
            _addFilter = this.addFilter = _setFilter,
            _removeFilter = this.removeFilter = function(f) {
                var key = typeof f === "function" ? f._katavorioId : f;
                delete _filters[key];
            };

        this.clearAllFilters = function() {
            _filters = {};
        };

        this.canDrag = this.params.canDrag || _true;

        var constrainRect,
            matchingDroppables = [], intersectingDroppables = [];

        this.downListener = function(e) {
            var isNotRightClick = this.rightButtonCanDrag || (e.which !== 3 && e.button !== 2);
            if (isNotRightClick && this.isEnabled() && this.canDrag()) {
                var _f =  _testFilter(e) && _inputFilter(e, this.el, this.k);
                if (_f) {
                    if (!clone)
                        dragEl = this.el;
                    else {
                        dragEl = this.el.cloneNode(true);
                        dragEl.setAttribute("id", null);
                        dragEl.style.position = "absolute";
                        // the clone node is added to the body; getOffsetRect gives us a value
                        // relative to the body.
                        var b = getOffsetRect(this.el);
                        dragEl.style.left = b.left + "px";
                        dragEl.style.top = b.top + "px";
                        this.params.addClass(dragEl, _classes.clonedDrag);
                        document.body.appendChild(dragEl);
                    }
                    consumeStartEvent && _consume(e);
                    downAt = _pl(e);
                    //
                    this.params.bind(document, "mousemove", this.moveListener);
                    this.params.bind(document, "mouseup", this.upListener);
                    k.markSelection(this);
                    k.markPosses(this);
                    this.params.addClass(document.body, css.noSelect);
                    _dispatch("beforeStart", {el:this.el, pos:posAtDown, e:e, drag:this});
                }
                else if (this.params.consumeFilteredEvents) {
                    _consume(e);
                }
            }
        }.bind(this);

        this.moveListener = function(e) {
            if (downAt) {
                if (!moving) {
                    var _continue = _dispatch("start", {el:this.el, pos:posAtDown, e:e, drag:this});
                    if (_continue !== false) {
                        if (!downAt) {
                            return;
                        }
                        this.mark(true);
                        moving = true;
                    } else {
                        this.abort();
                    }
                }

                // it is possible that the start event caused the drag to be aborted. So we check
                // again that we are currently dragging.
                if (downAt) {
                    intersectingDroppables.length = 0;
                    var pos = _pl(e), dx = pos[0] - downAt[0], dy = pos[1] - downAt[1],
                        z = this.params.ignoreZoom ? 1 : k.getZoom();
                    dx /= z;
                    dy /= z;
                    this.moveBy(dx, dy, e);
                    k.updateSelection(dx, dy, this);
                    k.updatePosses(dx, dy, this);
                }
            }
        }.bind(this);

        this.upListener = function(e) {
            if (downAt) {
                downAt = null;
                this.params.unbind(document, "mousemove", this.moveListener);
                this.params.unbind(document, "mouseup", this.upListener);
                this.params.removeClass(document.body, css.noSelect);
                this.unmark(e);
                k.unmarkSelection(this, e);
                k.unmarkPosses(this, e);
                this.stop(e);
                k.notifySelectionDragStop(this, e);
                k.notifyPosseDragStop(this, e);
                moving = false;
                if (clone) {
                    dragEl && dragEl.parentNode && dragEl.parentNode.removeChild(dragEl);
                    dragEl = null;
                }

                intersectingDroppables.length = 0;

                if (revertFunction && revertFunction(this.el, this.params.getPosition(this.el)) === true) {
                    this.params.setPosition(this.el, posAtDown);
                    _dispatch("revert", this.el);
                }
            }
        }.bind(this);

        this.getFilters = function() { return _filters; };

        this.abort = function() {
            if (downAt != null)
                this.upListener();
        };

        this.getDragElement = function() {
            return dragEl || this.el;
        };

        var listeners = {"start":[], "drag":[], "stop":[], "over":[], "out":[], "beforeStart":[], "revert":[] };
        if (params.events.start) listeners.start.push(params.events.start);
        if (params.events.beforeStart) listeners.beforeStart.push(params.events.beforeStart);
        if (params.events.stop) listeners.stop.push(params.events.stop);
        if (params.events.drag) listeners.drag.push(params.events.drag);
        if (params.events.revert) listeners.revert.push(params.events.revert);

        this.on = function(evt, fn) {
            if (listeners[evt]) listeners[evt].push(fn);
        };

        this.off = function(evt, fn) {
            if (listeners[evt]) {
                var l = [];
                for (var i = 0; i < listeners[evt].length; i++) {
                    if (listeners[evt][i] !== fn) l.push(listeners[evt][i]);
                }
                listeners[evt] = l;
            }
        };

        var _dispatch = function(evt, value) {
            var result = null;
            if (listeners[evt]) {
                for (var i = 0; i < listeners[evt].length; i++) {
                    try {
                        var v = listeners[evt][i](value);
                        if (v != null) {
                            result = v;
                        }
                    }
                    catch (e) { }
                }
            }
            return result;
        };

        this.notifyStart = function(e) {
            _dispatch("start", {el:this.el, pos:this.params.getPosition(dragEl), e:e, drag:this});
        };

        this.stop = function(e, force) {
            if (force || moving) {
                var positions = [],
                    sel = k.getSelection(),
                    dPos = this.params.getPosition(dragEl);

                if (sel.length > 1) {
                    for (var i = 0; i < sel.length; i++) {
                        var p = this.params.getPosition(sel[i].el);
                        positions.push([ sel[i].el, { left: p[0], top: p[1] }, sel[i] ]);
                    }
                }
                else {
                    positions.push([ dragEl, {left:dPos[0], top:dPos[1]}, this ]);
                }

                _dispatch("stop", {
                    el: dragEl,
                    pos: ghostProxyOffsets || dPos,
                    finalPos:dPos,
                    e: e,
                    drag: this,
                    selection:positions
                });
            }
        };

        this.mark = function(andNotify) {
            posAtDown = this.params.getPosition(dragEl);
            pagePosAtDown = this.params.getPosition(dragEl, true);
            pageDelta = [pagePosAtDown[0] - posAtDown[0], pagePosAtDown[1] - posAtDown[1]];
            this.size = this.params.getSize(dragEl);
            matchingDroppables = k.getMatchingDroppables(this);
            _setDroppablesActive(matchingDroppables, true, false, this);
            this.params.addClass(dragEl, this.params.dragClass || css.drag);

            var cs;
            if (this.params.getConstrainingRectangle) {
                cs = this.params.getConstrainingRectangle(dragEl)
            } else {
                cs = this.params.getSize(dragEl.parentNode);
            }
            constrainRect = {w: cs[0], h: cs[1]};

            if (andNotify) {
                k.notifySelectionDragStart(this);
            }
        };
        var ghostProxyOffsets;
        this.unmark = function(e, doNotCheckDroppables) {
            _setDroppablesActive(matchingDroppables, false, true, this);

            if (isConstrained && useGhostProxy(this.el)) {
                ghostProxyOffsets = [dragEl.offsetLeft, dragEl.offsetTop];
                this.el.parentNode.removeChild(dragEl);
                dragEl = this.el;
            }
            else {
                ghostProxyOffsets = null;
            }

            this.params.removeClass(dragEl, this.params.dragClass || css.drag);
            matchingDroppables.length = 0;
            isConstrained = false;
            if (!doNotCheckDroppables) {
                if (intersectingDroppables.length > 0 && ghostProxyOffsets) {
                    params.setPosition(this.el, ghostProxyOffsets);
                }
                intersectingDroppables.sort(_rankSort);
                for (var i = 0; i < intersectingDroppables.length; i++) {
                    var retVal = intersectingDroppables[i].drop(this, e);
                    if (retVal === true) break;
                }
            }
        };
        this.moveBy = function(dx, dy, e) {
            intersectingDroppables.length = 0;
            var desiredLoc = this.toGrid([posAtDown[0] + dx, posAtDown[1] + dy]),
                cPos = constrain(desiredLoc, dragEl);

            if (useGhostProxy(this.el)) {
                if (desiredLoc[0] !== cPos[0] || desiredLoc[1] !== cPos[1]) {
                    if (!isConstrained) {
                        var gp = ghostProxy(this.el);
                        params.addClass(gp, _classes.ghostProxy);
                        this.el.parentNode.appendChild(gp);
                        dragEl = gp;
                        isConstrained = true;
                    }
                    cPos = desiredLoc;
                }
                else {
                    if (isConstrained) {
                        this.el.parentNode.removeChild(dragEl);
                        dragEl = this.el;
                        isConstrained = false;
                    }
                }
            }

            var rect = { x:cPos[0], y:cPos[1], w:this.size[0], h:this.size[1]},
                pageRect = { x:rect.x + pageDelta[0], y:rect.y + pageDelta[1], w:rect.w, h:rect.h},
                focusDropElement = null;



            this.params.setPosition(dragEl, cPos);
            for (var i = 0; i < matchingDroppables.length; i++) {
                var r2 = { x:matchingDroppables[i].pagePosition[0], y:matchingDroppables[i].pagePosition[1], w:matchingDroppables[i].size[0], h:matchingDroppables[i].size[1]};
                if (this.params.intersects(pageRect, r2) && (_multipleDrop || focusDropElement == null || focusDropElement === matchingDroppables[i].el) && matchingDroppables[i].canDrop(this)) {
                    if (!focusDropElement) focusDropElement = matchingDroppables[i].el;
                    intersectingDroppables.push(matchingDroppables[i]);
                    matchingDroppables[i].setHover(this, true, e);
                }
                else if (matchingDroppables[i].isHover()) {
                    matchingDroppables[i].setHover(this, false, e);
                }
            }

            _dispatch("drag", {el:this.el, pos:cPos, e:e, drag:this});

            /* test to see if the parent needs to be scrolled (future)
             if (scroll) {
             var pnsl = dragEl.parentNode.scrollLeft, pnst = dragEl.parentNode.scrollTop;
             console.log("scroll!", pnsl, pnst);
             }*/
        };
        this.destroy = function() {
            this.params.unbind(this.el, "mousedown", this.downListener);
            this.params.unbind(document, "mousemove", this.moveListener);
            this.params.unbind(document, "mouseup", this.upListener);
            this.downListener = null;
            this.upListener = null;
            this.moveListener = null;
        };

        // init:register mousedown, and perhaps set a filter
        this.params.bind(this.el, "mousedown", this.downListener);

        // if handle provded, use that.  otherwise, try to set a filter.
        // note that a `handle` selector always results in filterExclude being set to false, ie.
        // the selector defines the handle element(s).
        if (this.params.handle)
            _setFilter(this.params.handle, false);
        else
            _setFilter(this.params.filter, this.params.filterExclude);
    };

    var Drop = function(el, params, css, scope) {
        this._class = css.droppable;
        this.params = params || {};
        this.rank = params.rank || 0;
        this._activeClass = this.params.activeClass || css.active;
        this._hoverClass = this.params.hoverClass || css.hover;
        Super.apply(this, arguments);
        var hover = false;
        this.allowLoopback = this.params.allowLoopback !== false;

        this.setActive = function(val) {
            this.params[val ? "addClass" : "removeClass"](this.el, this._activeClass);
        };

        this.updatePosition = function() {
            this.position = this.params.getPosition(this.el);
            this.pagePosition = this.params.getPosition(this.el, true);
            this.size = this.params.getSize(this.el);
        };

        this.canDrop = this.params.canDrop || function(drag) {
            return true;
        };

        this.isHover = function() { return hover; };

        this.setHover = function(drag, val, e) {
            // if turning off hover but this was not the drag that caused the hover, ignore.
            if (val || this.el._katavorioDragHover == null || this.el._katavorioDragHover === drag.el._katavorio) {
                this.params[val ? "addClass" : "removeClass"](this.el, this._hoverClass);
                //this.el._katavorioDragHover = val ? drag.el._katavorio : null;
                this.el._katavorioDragHover = val ? drag.el._katavorio : null;
                if (hover !== val)
                    this.params.events[val ? "over" : "out"]({el:this.el, e:e, drag:drag, drop:this});
                hover = val;
            }
        };

        this.drop = function(drag, event) {
            return this.params.events["drop"]({ drag:drag, e:event, drop:this });
        };

        this.destroy = function() {
            this._class = null;
            this._activeClass = null;
            this._hoverClass = null;
            //this.params = null;
            hover = null;
            //this.el = null;
        };
    };

    var _uuid = function() {
        return ('xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
            var r = Math.random()*16|0, v = c === 'x' ? r : (r&0x3|0x8);
            return v.toString(16);
        }));
    };

    var _rankSort = function(a,b) {
        return a.rank < b.rank ? 1 : a.rank > b.rank ? -1 : 0;
    };

    var _gel = function(el) {
        if (el == null) return null;
        el = (typeof el === "string" || el.constructor === String)  ? document.getElementById(el) : el;
        if (el == null) return null;
        el._katavorio = el._katavorio || _uuid();
        return el;
    };

    root.Katavorio = function(katavorioParams) {

        var _selection = [],
            _selectionMap = {};

        this._dragsByScope = {};
        this._dropsByScope = {};
        var _zoom = 1,
            _reg = function(obj, map) {
                _each(obj, function(_obj) {
                    for(var i = 0; i < _obj.scopes.length; i++) {
                        map[_obj.scopes[i]] = map[_obj.scopes[i]] || [];
                        map[_obj.scopes[i]].push(_obj);
                    }
                });
            },
            _unreg = function(obj, map) {
                var c = 0;
                _each(obj, function(_obj) {
                    for(var i = 0; i < _obj.scopes.length; i++) {
                        if (map[_obj.scopes[i]]) {
                            var idx = katavorioParams.indexOf(map[_obj.scopes[i]], _obj);
                            if (idx !== -1) {
                                map[_obj.scopes[i]].splice(idx, 1);
                                c++;
                            }
                        }
                    }
                });

                return c > 0 ;
            },
            _getMatchingDroppables = this.getMatchingDroppables = function(drag) {
                var dd = [], _m = {};
                for (var i = 0; i < drag.scopes.length; i++) {
                    var _dd = this._dropsByScope[drag.scopes[i]];
                    if (_dd) {
                        for (var j = 0; j < _dd.length; j++) {
                            if (_dd[j].canDrop(drag) &&  !_m[_dd[j].uuid] && (_dd[j].allowLoopback || _dd[j].el !== drag.el)) {
                                _m[_dd[j].uuid] = true;
                                dd.push(_dd[j]);
                            }
                        }
                    }
                }
                dd.sort(_rankSort);
                return dd;
            },
            _prepareParams = function(p) {
                p = p || {};
                var _p = {
                    events:{}
                }, i;
                for (i in katavorioParams) _p[i] = katavorioParams[i];
                for (i in p) _p[i] = p[i];
                // events

                for (i = 0; i < _events.length; i++) {
                    _p.events[_events[i]] = p[_events[i]] || _devNull;
                }
                _p.katavorio = this;
                return _p;
            }.bind(this),
            _mistletoe = function(existingDrag, params) {
                for (var i = 0; i < _events.length; i++) {
                    if (params[_events[i]]) {
                        existingDrag.on(_events[i], params[_events[i]]);
                    }
                }
            }.bind(this),
            _css = {},
            overrideCss = katavorioParams.css || {},
            _scope = katavorioParams.scope || _defaultScope;

        // prepare map of css classes based on defaults frst, then optional overrides
        for (var i in _classes) _css[i] = _classes[i];
        for (var i in overrideCss) _css[i] = overrideCss[i];

        var inputFilterSelector = katavorioParams.inputFilterSelector || _defaultInputFilterSelector;
        /**
         * Gets the selector identifying which input elements to filter from drag events.
         * @method getInputFilterSelector
         * @return {String} Current input filter selector.
         */
        this.getInputFilterSelector = function() { return inputFilterSelector; };

        /**
         * Sets the selector identifying which input elements to filter from drag events.
         * @method setInputFilterSelector
         * @param {String} selector Input filter selector to set.
         * @return {Katavorio} Current instance; method may be chained.
         */
        this.setInputFilterSelector = function(selector) {
            inputFilterSelector = selector;
            return this;
        };

        this.draggable = function(el, params) {
            var o = [];
            _each(el, function(_el) {
                _el = _gel(_el);
                if (_el != null) {
                    if (_el._katavorioDrag == null) {
                        var p = _prepareParams(params);
                        _el._katavorioDrag = new Drag(_el, p, _css, _scope);
                        _reg(_el._katavorioDrag, this._dragsByScope);
                        o.push(_el._katavorioDrag);
                        katavorioParams.addClass(_el, _css.draggable);
                    }
                    else {
                        _mistletoe(_el._katavorioDrag, params);
                    }
                }
            }.bind(this));
            return o;

        };

        this.droppable = function(el, params) {
            var o = [];
            _each(el, function(_el) {
                _el = _gel(_el);
                if (_el != null) {
                    var drop = new Drop(_el, _prepareParams(params), _css, _scope);
                    _el._katavorioDrop = _el._katavorioDrop || [];
                    _el._katavorioDrop.push(drop);
                    _reg(drop, this._dropsByScope);
                    o.push(drop);
                    katavorioParams.addClass(_el, _css.droppable);
                }
            }.bind(this));
            return o;
        };

        /**
         * @name Katavorio#select
         * @function
         * @desc Adds an element to the current selection (for multiple node drag)
         * @param {Element|String} DOM element - or id of the element - to add.
         */
        this.select = function(el) {
            _each(el, function() {
                var _el = _gel(this);
                if (_el && _el._katavorioDrag) {
                    if (!_selectionMap[_el._katavorio]) {
                        _selection.push(_el._katavorioDrag);
                        _selectionMap[_el._katavorio] = [ _el, _selection.length - 1 ];
                        katavorioParams.addClass(_el, _css.selected);
                    }
                }
            });
            return this;
        };

        /**
         * @name Katavorio#deselect
         * @function
         * @desc Removes an element from the current selection (for multiple node drag)
         * @param {Element|String} DOM element - or id of the element - to remove.
         */
        this.deselect = function(el) {
            _each(el, function() {
                var _el = _gel(this);
                if (_el && _el._katavorio) {
                    var e = _selectionMap[_el._katavorio];
                    if (e) {
                        var _s = [];
                        for (var i = 0; i < _selection.length; i++)
                            if (_selection[i].el !== _el) _s.push(_selection[i]);
                        _selection = _s;
                        delete _selectionMap[_el._katavorio];
                        katavorioParams.removeClass(_el, _css.selected);
                    }
                }
            });
            return this;
        };

        this.deselectAll = function() {
            for (var i in _selectionMap) {
                var d = _selectionMap[i];
                katavorioParams.removeClass(d[0], _css.selected);
            }

            _selection.length = 0;
            _selectionMap = {};
        };

        this.markSelection = function(drag) {
            _foreach(_selection, function(e) { e.mark(); }, drag);
        };

        this.markPosses = function(drag) {
            if (drag.posses) {
                _each(drag.posses, function(p) {
                    if (drag.posseRoles[p] && _posses[p]) {
                        _foreach(_posses[p].members, function (d) {
                            d.mark();
                        }, drag);
                    }
                })
            }
        };

        this.unmarkSelection = function(drag, event) {
            _foreach(_selection, function(e) { e.unmark(event); }, drag);
        };

        this.unmarkPosses = function(drag, event) {
            if (drag.posses) {
                _each(drag.posses, function(p) {
                    if (drag.posseRoles[p] && _posses[p]) {
                        _foreach(_posses[p].members, function (d) {
                            d.unmark(event, true);
                        }, drag);
                    }
                });
            }
        };

        this.getSelection = function() { return _selection.slice(0); };

        this.updateSelection = function(dx, dy, drag) {
            _foreach(_selection, function(e) { e.moveBy(dx, dy); }, drag);
        };

        var _posseAction = function(fn, drag) {
            if (drag.posses) {
                _each(drag.posses, function(p) {
                    if (drag.posseRoles[p] && _posses[p]) {
                        _foreach(_posses[p].members, function (e) {
                            fn(e);
                        }, drag);
                    }
                });
            }
        };

        this.updatePosses = function(dx, dy, drag) {
            _posseAction(function(e) { e.moveBy(dx, dy); }, drag);
        };

        this.notifyPosseDragStop = function(drag, evt) {
            _posseAction(function(e) { e.stop(evt, true); }, drag);
        };

        this.notifySelectionDragStop = function(drag, evt) {
            _foreach(_selection, function(e) { e.stop(evt, true); }, drag);
        };

        this.notifySelectionDragStart = function(drag, evt) {
            _foreach(_selection, function(e) { e.notifyStart(evt);}, drag);
        };

        this.setZoom = function(z) { _zoom = z; };
        this.getZoom = function() { return _zoom; };

        // does the work of changing scopes
        var _scopeManip = function(kObj, scopes, map, fn) {
            _each(kObj, function(_kObj) {
                _unreg(_kObj, map);  // deregister existing scopes
                _kObj[fn](scopes); // set scopes
                _reg(_kObj, map); // register new ones
            });
        };

        _each([ "set", "add", "remove", "toggle"], function(v) {
            this[v + "Scope"] = function(el, scopes) {
                _scopeManip(el._katavorioDrag, scopes, this._dragsByScope, v + "Scope");
                _scopeManip(el._katavorioDrop, scopes, this._dropsByScope, v + "Scope");
            }.bind(this);
            this[v + "DragScope"] = function(el, scopes) {
                _scopeManip(el.constructor === Drag ? el : el._katavorioDrag, scopes, this._dragsByScope, v + "Scope");
            }.bind(this);
            this[v + "DropScope"] = function(el, scopes) {
                _scopeManip(el.constructor === Drop ? el : el._katavorioDrop, scopes, this._dropsByScope, v + "Scope");
            }.bind(this);
        }.bind(this));

        this.snapToGrid = function(x, y) {
            for (var s in this._dragsByScope) {
                _foreach(this._dragsByScope[s], function(d) { d.snap(x, y); });
            }
        };

        this.getDragsForScope = function(s) { return this._dragsByScope[s]; };
        this.getDropsForScope = function(s) { return this._dropsByScope[s]; };

        var _destroy = function(el, type, map) {
            el = _gel(el);
            if (el[type]) {

                // remove from selection, if present.
                var selIdx = _selection.indexOf(el[type]);
                if (selIdx >= 0) {
                    _selection.splice(selIdx, 1);
                }

                if (_unreg(el[type], map)) {
                    _each(el[type], function(kObj) { kObj.destroy() });
                }

                delete el[type];
            }
        };

        var _removeListener = function(el, type, evt, fn) {
            el = _gel(el);
            if (el[type]) {
                el[type].off(evt, fn);
            }
        };

        this.elementRemoved = function(el) {
            this.destroyDraggable(el);
            this.destroyDroppable(el);
        };

        /**
         * Either completely remove drag functionality from the given element, or remove a specific event handler. If you
         * call this method with a single argument - the element - all drag functionality is removed from it. Otherwise, if
         * you provide an event name and listener function, this function is de-registered (if found).
         * @param el Element to update
         * @param {string} [evt] Optional event name to unsubscribe
         * @param {Function} [fn] Optional function to unsubscribe
         */
        this.destroyDraggable = function(el, evt, fn) {
            if (arguments.length === 1) {
                _destroy(el, "_katavorioDrag", this._dragsByScope);
            } else {
                _removeListener(el, "_katavorioDrag", evt, fn);
            }
        };

        /**
         * Either completely remove drop functionality from the given element, or remove a specific event handler. If you
         * call this method with a single argument - the element - all drop functionality is removed from it. Otherwise, if
         * you provide an event name and listener function, this function is de-registered (if found).
         * @param el Element to update
         * @param {string} [evt] Optional event name to unsubscribe
         * @param {Function} [fn] Optional function to unsubscribe
         */
        this.destroyDroppable = function(el, evt, fn) {
            if (arguments.length === 1) {
                _destroy(el, "_katavorioDrop", this._dropsByScope);
            } else {
                _removeListener(el, "_katavorioDrop", evt, fn);
            }
        };

        this.reset = function() {
            this._dragsByScope = {};
            this._dropsByScope = {};
            _selection = [];
            _selectionMap = {};
            _posses = {};
        };

        // ----- groups
        var _posses = {};

        var _processOneSpec = function(el, _spec, dontAddExisting) {
            var posseId = _isString(_spec) ? _spec : _spec.id;
            var active = _isString(_spec) ? true : _spec.active !== false;
            var posse = _posses[posseId] || (function() {
                var g = {name:posseId, members:[]};
                _posses[posseId] = g;
                return g;
            })();
            _each(el, function(_el) {
                if (_el._katavorioDrag) {

                    if (dontAddExisting && _el._katavorioDrag.posseRoles[posse.name] != null) return;

                    _suggest(posse.members, _el._katavorioDrag);
                    _suggest(_el._katavorioDrag.posses, posse.name);
                    _el._katavorioDrag.posseRoles[posse.name] = active;
                }
            });
            return posse;
        };

        /**
         * Add the given element to the posse with the given id, creating the group if it at first does not exist.
         * @method addToPosse
         * @param {Element} el Element to add.
         * @param {String...|Object...} spec Variable args parameters. Each argument can be a either a String, indicating
         * the ID of a Posse to which the element should be added as an active participant, or an Object containing
         * `{ id:"posseId", active:false/true}`. In the latter case, if `active` is not provided it is assumed to be
         * true.
         * @returns {Posse|Posse[]} The Posse(s) to which the element(s) was/were added.
         */
        this.addToPosse = function(el, spec) {

            var posses = [];

            for (var i = 1; i < arguments.length; i++) {
                posses.push(_processOneSpec(el, arguments[i]));
            }

            return posses.length === 1 ? posses[0] : posses;
        };

        /**
         * Sets the posse(s) for the element with the given id, creating those that do not yet exist, and removing from
         * the element any current Posses that are not specified by this method call. This method will not change the
         * active/passive state if it is given a posse in which the element is already a member.
         * @method setPosse
         * @param {Element} el Element to set posse(s) on.
         * @param {String...|Object...} spec Variable args parameters. Each argument can be a either a String, indicating
         * the ID of a Posse to which the element should be added as an active participant, or an Object containing
         * `{ id:"posseId", active:false/true}`. In the latter case, if `active` is not provided it is assumed to be
         * true.
         * @returns {Posse|Posse[]} The Posse(s) to which the element(s) now belongs.
         */
        this.setPosse = function(el, spec) {

            var posses = [];

            for (var i = 1; i < arguments.length; i++) {
                posses.push(_processOneSpec(el, arguments[i], true).name);
            }

            _each(el, function(_el) {
                if (_el._katavorioDrag) {
                    var diff = _difference(_el._katavorioDrag.posses, posses);
                    var p = [];
                    Array.prototype.push.apply(p, _el._katavorioDrag.posses);
                    for (var i = 0; i < diff.length; i++) {
                        this.removeFromPosse(_el, diff[i]);
                    }
                }
            }.bind(this));

            return posses.length === 1 ? posses[0] : posses;
        };

        /**
         * Remove the given element from the given posse(s).
         * @method removeFromPosse
         * @param {Element} el Element to remove.
         * @param {String...} posseId Varargs parameter: one value for each posse to remove the element from.
         */
        this.removeFromPosse = function(el, posseId) {
            if (arguments.length < 2) throw new TypeError("No posse id provided for remove operation");
            for(var i = 1; i < arguments.length; i++) {
                posseId = arguments[i];
                _each(el, function (_el) {
                    if (_el._katavorioDrag && _el._katavorioDrag.posses) {
                        var d = _el._katavorioDrag;
                        _each(posseId, function (p) {
                            _vanquish(_posses[p].members, d);
                            _vanquish(d.posses, p);
                            delete d.posseRoles[p];
                        });
                    }
                });
            }
        };

        /**
         * Remove the given element from all Posses to which it belongs.
         * @method removeFromAllPosses
         * @param {Element|Element[]} el Element to remove from Posses.
         */
        this.removeFromAllPosses = function(el) {
            _each(el, function(_el) {
                if (_el._katavorioDrag && _el._katavorioDrag.posses) {
                    var d = _el._katavorioDrag;
                    _each(d.posses, function(p) {
                        _vanquish(_posses[p].members, d);
                    });
                    d.posses.length = 0;
                    d.posseRoles = {};
                }
            });
        };

        /**
         * Changes the participation state for the element in the Posse with the given ID.
         * @param {Element|Element[]} el Element(s) to change state for.
         * @param {String} posseId ID of the Posse to change element state for.
         * @param {Boolean} state True to make active, false to make passive.
         */
        this.setPosseState = function(el, posseId, state) {
            var posse = _posses[posseId];
            if (posse) {
                _each(el, function(_el) {
                    if (_el._katavorioDrag && _el._katavorioDrag.posses) {
                        _el._katavorioDrag.posseRoles[posse.name] = state;
                    }
                });
            }
        };

    };

    root.Katavorio.version = "0.23.0";

    if (true) {
        exports.Katavorio = root.Katavorio;
    }

}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains utility functions that run in both browsers and headless.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */

;
(function () {

    var _isa = function (a) {
            return Object.prototype.toString.call(a) === "[object Array]";
        },
        _isnum = function (n) {
            return Object.prototype.toString.call(n) === "[object Number]";
        },
        _iss = function (s) {
            return typeof s === "string";
        },
        _isb = function (s) {
            return typeof s === "boolean";
        },
        _isnull = function (s) {
            return s == null;
        },
        _iso = function (o) {
            return o == null ? false : Object.prototype.toString.call(o) === "[object Object]";
        },
        _isd = function (o) {
            return Object.prototype.toString.call(o) === "[object Date]";
        },
        _isf = function (o) {
            return Object.prototype.toString.call(o) === "[object Function]";
        },
        _isNamedFunction = function(o) {
            return _isf(o) && o.name != null && o.name.length > 0;
        },
        _ise = function (o) {
            for (var i in o) {
                if (o.hasOwnProperty(i)) {
                    return false;
                }
            }
            return true;
        };

    var root = this;
    root.jsPlumbUtil = {
        isArray: _isa,
        isString: _iss,
        isBoolean: _isb,
        isNull: _isnull,
        isObject: _iso,
        isDate: _isd,
        isFunction: _isf,
        isEmpty: _ise,
        isNumber: _isnum,
        clone: function (a) {
            if (_iss(a)) {
                return "" + a;
            }
            else if (_isb(a)) {
                return !!a;
            }
            else if (_isd(a)) {
                return new Date(a.getTime());
            }
            else if (_isf(a)) {
                return a;
            }
            else if (_isa(a)) {
                var b = [];
                for (var i = 0; i < a.length; i++) {
                    b.push(this.clone(a[i]));
                }
                return b;
            }
            else if (_iso(a)) {
                var c = {};
                for (var j in a) {
                    c[j] = this.clone(a[j]);
                }
                return c;
            }
            else {
                return a;
            }
        },
        merge: function (a, b, collations) {
            // first change the collations array - if present - into a lookup table, because its faster.
            var cMap = {}, ar, i;
            collations = collations || [];
            for (i = 0; i < collations.length; i++) {
                cMap[collations[i]] = true;
            }

            var c = this.clone(a);
            for (i in b) {
                if (c[i] == null) {
                    c[i] = b[i];
                }
                else if (_iss(b[i]) || _isb(b[i])) {
                    if (!cMap[i]) {
                        c[i] = b[i]; // if we dont want to collate, just copy it in.
                    }
                    else {
                        ar = [];
                        // if c's object is also an array we can keep its values.
                        ar.push.apply(ar, _isa(c[i]) ? c[i] : [ c[i] ]);
                        ar.push.apply(ar, _isa(b[i]) ? b[i] : [ b[i] ]);
                        c[i] = ar;
                    }
                }
                else {
                    if (_isa(b[i])) {
                        ar = [];
                        // if c's object is also an array we can keep its values.
                        if (_isa(c[i])) {
                            ar.push.apply(ar, c[i]);
                        }
                        ar.push.apply(ar, b[i]);
                        c[i] = ar;
                    }
                    else if (_iso(b[i])) {
                        // overwite c's value with an object if it is not already one.
                        if (!_iso(c[i])) {
                            c[i] = {};
                        }
                        for (var j in b[i]) {
                            c[i][j] = b[i][j];
                        }
                    }
                }

            }
            return c;
        },
        replace: function (inObj, path, value) {
            if (inObj == null) {
                return;
            }
            var q = inObj, t = q;
            path.replace(/([^\.])+/g, function (term, lc, pos, str) {
                var array = term.match(/([^\[0-9]+){1}(\[)([0-9+])/),
                    last = pos + term.length >= str.length,
                    _getArray = function () {
                        return t[array[1]] || (function () {
                            t[array[1]] = [];
                            return t[array[1]];
                        })();
                    };

                if (last) {
                    // set term = value on current t, creating term as array if necessary.
                    if (array) {
                        _getArray()[array[3]] = value;
                    }
                    else {
                        t[term] = value;
                    }
                }
                else {
                    // set to current t[term], creating t[term] if necessary.
                    if (array) {
                        var a = _getArray();
                        t = a[array[3]] || (function () {
                            a[array[3]] = {};
                            return a[array[3]];
                        })();
                    }
                    else {
                        t = t[term] || (function () {
                            t[term] = {};
                            return t[term];
                        })();
                    }
                }
            });

            return inObj;
        },
        //
        // chain a list of functions, supplied by [ object, method name, args ], and return on the first
        // one that returns the failValue. if none return the failValue, return the successValue.
        //
        functionChain: function (successValue, failValue, fns) {
            for (var i = 0; i < fns.length; i++) {
                var o = fns[i][0][fns[i][1]].apply(fns[i][0], fns[i][2]);
                if (o === failValue) {
                    return o;
                }
            }
            return successValue;
        },
        // take the given model and expand out any parameters.
        // 'functionPrefix' is optional, and if present, helps jsplumb figure out what to do if a value is a Function.
        // if you do not provide it, jsplumb will run the given values through any functions it finds, and use the function's
        // output as the value in the result. if you do provide the prefix, only functions that are named and have this prefix
        // will be executed; other functions will be passed as values to the output.
        populate: function (model, values, functionPrefix) {
            // for a string, see if it has parameter matches, and if so, try to make the substitutions.
            var getValue = function (fromString) {
                    var matches = fromString.match(/(\${.*?})/g);
                    if (matches != null) {
                        for (var i = 0; i < matches.length; i++) {
                            var val = values[matches[i].substring(2, matches[i].length - 1)] || "";
                            if (val != null) {
                                fromString = fromString.replace(matches[i], val);
                            }
                        }
                    }
                    return fromString;
                },
            // process one entry.
                _one = function (d) {
                    if (d != null) {
                        if (_iss(d)) {
                            return getValue(d);
                        }
                        else if (_isf(d) && (functionPrefix == null || (d.name || "").indexOf(functionPrefix) === 0)) {
                            return d(values);
                        }
                        else if (_isa(d)) {
                            var r = [];
                            for (var i = 0; i < d.length; i++) {
                                r.push(_one(d[i]));
                            }
                            return r;
                        }
                        else if (_iso(d)) {
                            var s = {};
                            for (var j in d) {
                                s[j] = _one(d[j]);
                            }
                            return s;
                        }
                        else {
                            return d;
                        }
                    }
                };

            return _one(model);
        },
        findWithFunction: function (a, f) {
            // CONVERTED
            if (a) {
                for (var i = 0; i < a.length; i++) {
                    if (f(a[i])) {
                        return i;
                    }
                }
            }
            return -1;
        },
        removeWithFunction: function (a, f) {
            // CONVERTED
            var idx = root.jsPlumbUtil.findWithFunction(a, f);
            if (idx > -1) {
                a.splice(idx, 1);
            }
            return idx !== -1;
        },
        remove: function (l, v) {
            // CONVERTED
            var idx = l.indexOf(v);
            if (idx > -1) {
                l.splice(idx, 1);
            }
            return idx !== -1;
        },
        // TODO support insert index
        addWithFunction: function (list, item, hashFunction) {
            if (root.jsPlumbUtil.findWithFunction(list, hashFunction) === -1) {
                list.push(item);
            }
        },
        addToList: function (map, key, value, insertAtStart) {
            var l = map[key];
            if (l == null) {
                l = [];
                map[key] = l;
            }
            l[insertAtStart ? "unshift" : "push"](value);
            return l;
        },
        suggest : function(list, item, insertAtHead) {
            if (list.indexOf(item) === -1) {
                if (insertAtHead) {
                    list.unshift(item);
                } else {
                    list.push(item);
                }
                return true;
            }
            return false;
        },
        //
        // extends the given obj (which can be an array) with the given constructor function, prototype functions, and
        // class members, any of which may be null.
        //
        extend: function (child, parent, _protoFn) {
            var i;
            parent = _isa(parent) ? parent : [ parent ];

            for (i = 0; i < parent.length; i++) {
                for (var j in parent[i].prototype) {
                    if (parent[i].prototype.hasOwnProperty(j)) {
                        child.prototype[j] = parent[i].prototype[j];
                    }
                }
            }

            var _makeFn = function (name, protoFn) {
                return function () {
                    for (i = 0; i < parent.length; i++) {
                        if (parent[i].prototype[name]) {
                            parent[i].prototype[name].apply(this, arguments);
                        }
                    }
                    return protoFn.apply(this, arguments);
                };
            };

            var _oneSet = function (fns) {
                for (var k in fns) {
                    child.prototype[k] = _makeFn(k, fns[k]);
                }
            };

            if (arguments.length > 2) {
                for (i = 2; i < arguments.length; i++) {
                    _oneSet(arguments[i]);
                }
            }

            return child;
        },
        uuid: function () {
            return ('xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
                var r = Math.random() * 16 | 0, v = c === 'x' ? r : (r & 0x3 | 0x8);
                return v.toString(16);
            }));
        },
        logEnabled: true,
        log: function () {
            if (root.jsPlumbUtil.logEnabled && typeof console !== "undefined") {
                try {
                    var msg = arguments[arguments.length - 1];
                    console.log(msg);
                }
                catch (e) {
                }
            }
        },

        /**
         * Wraps one function with another, creating a placeholder for the
         * wrapped function if it was null. this is used to wrap the various
         * drag/drop event functions - to allow jsPlumb to be notified of
         * important lifecycle events without imposing itself on the user's
         * drag/drop functionality.
         * @method jsPlumbUtil.wrap
         * @param {Function} wrappedFunction original function to wrap; may be null.
         * @param {Function} newFunction function to wrap the original with.
         * @param {Object} [returnOnThisValue] Optional. Indicates that the wrappedFunction should
         * not be executed if the newFunction returns a value matching 'returnOnThisValue'.
         * note that this is a simple comparison and only works for primitives right now.
         */
        wrap: function (wrappedFunction, newFunction, returnOnThisValue) {
            return function () {
                var r = null;
                try {
                    if (newFunction != null) {
                        r = newFunction.apply(this, arguments);
                    }
                } catch (e) {
                    root.jsPlumbUtil.log("jsPlumb function failed : " + e);
                }
                if ((wrappedFunction != null) && (returnOnThisValue == null || (r !== returnOnThisValue))) {
                    try {
                        r = wrappedFunction.apply(this, arguments);
                    } catch (e) {
                        root.jsPlumbUtil.log("wrapped function failed : " + e);
                    }
                }
                return r;
            };
        }
    };

    root.jsPlumbUtil.EventGenerator = function () {
        var _listeners = {},
            eventsSuspended = false,
            tick = false,
        // this is a list of events that should re-throw any errors that occur during their dispatch. it is current private.
            eventsToDieOn = { "ready": true },
            queue = [];

        this.bind = function (event, listener, insertAtStart) {
            var _one = function(evt) {
                root.jsPlumbUtil.addToList(_listeners, evt, listener, insertAtStart);
                listener.__jsPlumb = listener.__jsPlumb || {};
                listener.__jsPlumb[root.jsPlumbUtil.uuid()] = evt;
            };

            if (typeof event === "string") {
                _one(event);
            }
            else if (event.length != null) {
                for (var i = 0; i < event.length; i++) {
                    _one(event[i]);
                }
            }

            return this;
        };

        this.fire = function (event, value, originalEvent) {
            if (!tick) {
                tick = true;
                if (!eventsSuspended && _listeners[event]) {
                    var l = _listeners[event].length, i = 0, _gone = false, ret = null;
                    if (!this.shouldFireEvent || this.shouldFireEvent(event, value, originalEvent)) {
                        while (!_gone && i < l && ret !== false) {
                            // doing it this way rather than catching and then possibly re-throwing means that an error propagated by this
                            // method will have the whole call stack available in the debugger.
                            if (eventsToDieOn[event]) {
                                _listeners[event][i].apply(this, [value, originalEvent]);
                            }
                            else {
                                try {
                                    ret = _listeners[event][i].apply(this, [value, originalEvent]);
                                } catch (e) {
                                    root.jsPlumbUtil.log("jsPlumb: fire failed for event " + event + " : " + e);
                                }
                            }
                            i++;
                            if (_listeners == null || _listeners[event] == null) {
                                _gone = true;
                            }
                        }
                    }
                }
                tick = false;
                _drain();
            } else {
                queue.unshift(arguments);
            }
            return this;
        };

        var _drain = function() {
            var n = queue.pop();
            if (n) {
                this.fire.apply(this, n);
            }
        }.bind(this);

        this.unbind = function (eventOrListener, listener) {

            if (arguments.length === 0) {
                _listeners = {};
            }
            else if (arguments.length === 1) {
                if (typeof eventOrListener === "string") {
                    delete _listeners[eventOrListener];
                }
                else if (eventOrListener.__jsPlumb) {
                    var evt;
                    for (var i in eventOrListener.__jsPlumb) {
                        evt = eventOrListener.__jsPlumb[i];
                        root.jsPlumbUtil.remove(_listeners[evt] || [], eventOrListener);
                    }
                }
            }
            else if (arguments.length === 2) {
                root.jsPlumbUtil.remove(_listeners[eventOrListener] || [], listener);
            }

            return this;
        };

        this.getListener = function (forEvent) {
            return _listeners[forEvent];
        };
        this.setSuspendEvents = function (val) {
            eventsSuspended = val;
        };
        this.isSuspendEvents = function () {
            return eventsSuspended;
        };
        this.silently = function(fn) {
            this.setSuspendEvents(true);
            try {
                fn();
            }
            catch (e) {
                root.jsPlumbUtil.log("Cannot execute silent function " + e);
            }
            this.setSuspendEvents(false);
        };
        this.cleanupListeners = function () {
            for (var i in _listeners) {
                _listeners[i] = null;
            }
        };
    };

    root.jsPlumbUtil.EventGenerator.prototype = {
        cleanup: function () {
            this.cleanupListeners();
        }
    };

    if (true) {
        exports.jsPlumbUtil = root.jsPlumbUtil;
    }

}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains utility functions that run in browsers only.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
 ;(function() {

  "use strict";

   var root = this;

    root.jsPlumbUtil.matchesSelector = function(el, selector, ctx) {
       ctx = ctx || el.parentNode;
       var possibles = ctx.querySelectorAll(selector);
       for (var i = 0; i < possibles.length; i++) {
           if (possibles[i] === el) {
               return true;
           }
       }
       return false;
   };

    root.jsPlumbUtil.consume = function(e, doNotPreventDefault) {
       if (e.stopPropagation) {
           e.stopPropagation();
       }
       else {
           e.returnValue = false;
       }

       if (!doNotPreventDefault && e.preventDefault){
           e.preventDefault();
       }
   };

   /*
    * Function: sizeElement
    * Helper to size and position an element. You would typically use
    * this when writing your own Connector or Endpoint implementation.
    *
    * Parameters:
    *  x - [int] x position for the element origin
    *  y - [int] y position for the element origin
    *  w - [int] width of the element
    *  h - [int] height of the element
    *
    */
    root.jsPlumbUtil.sizeElement = function(el, x, y, w, h) {
       if (el) {
           el.style.height = h + "px";
           el.height = h;
           el.style.width = w + "px";
           el.width = w;
           el.style.left = x + "px";
           el.style.top = y + "px";
       }
   };

 }).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the core code.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;(function () {

    "use strict";

    var root = this;

    var _ju = root.jsPlumbUtil,

        /**
         * creates a timestamp, using milliseconds since 1970, but as a string.
         */
        _timestamp = function () {
            return "" + (new Date()).getTime();
        },

    // helper method to update the hover style whenever it, or paintStyle, changes.
    // we use paintStyle as the foundation and merge hoverPaintStyle over the
    // top.
        _updateHoverStyle = function (component) {
            if (component._jsPlumb.paintStyle && component._jsPlumb.hoverPaintStyle) {
                var mergedHoverStyle = {};
                jsPlumb.extend(mergedHoverStyle, component._jsPlumb.paintStyle);
                jsPlumb.extend(mergedHoverStyle, component._jsPlumb.hoverPaintStyle);
                delete component._jsPlumb.hoverPaintStyle;
                // we want the fill of paintStyle to override a gradient, if possible.
                if (mergedHoverStyle.gradient && component._jsPlumb.paintStyle.fill) {
                    delete mergedHoverStyle.gradient;
                }
                component._jsPlumb.hoverPaintStyle = mergedHoverStyle;
            }
        },
        events = ["tap", "dbltap", "click", "dblclick", "mouseover", "mouseout", "mousemove", "mousedown", "mouseup", "contextmenu" ],
        eventFilters = { "mouseout": "mouseleave", "mouseexit": "mouseleave" },
        _updateAttachedElements = function (component, state, timestamp, sourceElement) {
            var affectedElements = component.getAttachedElements();
            if (affectedElements) {
                for (var i = 0, j = affectedElements.length; i < j; i++) {
                    if (!sourceElement || sourceElement !== affectedElements[i]) {
                        affectedElements[i].setHover(state, true, timestamp);			// tell the attached elements not to inform their own attached elements.
                    }
                }
            }
        },
        _splitType = function (t) {
            return t == null ? null : t.split(" ");
        },
        _mapType = function(map, obj, typeId) {
            for (var i in obj) {
                map[i] = typeId;
            }
        },
        _each = function(fn, obj) {
            obj = _ju.isArray(obj) || (obj.length != null && !_ju.isString(obj)) ? obj : [ obj ];
            for (var i = 0; i < obj.length; i++) {
                try {
                    fn.apply(obj[i], [ obj[i] ]);
                }
                catch (e) {
                    _ju.log(".each iteration failed : " + e);
                }
            }
        },
        _applyTypes = function (component, params, doNotRepaint) {
            if (component.getDefaultType) {
                var td = component.getTypeDescriptor(), map = {};
                var defType = component.getDefaultType();
                var o = _ju.merge({}, defType);
                _mapType(map, defType, "__default");
                for (var i = 0, j = component._jsPlumb.types.length; i < j; i++) {
                    var tid = component._jsPlumb.types[i];
                    if (tid !== "__default") {
                        var _t = component._jsPlumb.instance.getType(tid, td);
                        if (_t != null) {
                            o = _ju.merge(o, _t, [ "cssClass" ]);
                            _mapType(map, _t, tid);
                        }
                    }
                }

                if (params) {
                    o = _ju.populate(o, params, "_");
                }

                component.applyType(o, doNotRepaint, map);
                if (!doNotRepaint) {
                    component.repaint();
                }
            }
        },

// ------------------------------ BEGIN jsPlumbUIComponent --------------------------------------------

        jsPlumbUIComponent = root.jsPlumbUIComponent = function (params) {

            _ju.EventGenerator.apply(this, arguments);

            var self = this,
                a = arguments,
                idPrefix = self.idPrefix,
                id = idPrefix + (new Date()).getTime();

            this._jsPlumb = {
                instance: params._jsPlumb,
                parameters: params.parameters || {},
                paintStyle: null,
                hoverPaintStyle: null,
                paintStyleInUse: null,
                hover: false,
                beforeDetach: params.beforeDetach,
                beforeDrop: params.beforeDrop,
                overlayPlacements: [],
                hoverClass: params.hoverClass || params._jsPlumb.Defaults.HoverClass,
                types: [],
                typeCache:{}
            };

            this.cacheTypeItem = function(key, item, typeId) {
                this._jsPlumb.typeCache[typeId] = this._jsPlumb.typeCache[typeId] || {};
                this._jsPlumb.typeCache[typeId][key] = item;
            };
            this.getCachedTypeItem = function(key, typeId) {
                return this._jsPlumb.typeCache[typeId] ? this._jsPlumb.typeCache[typeId][key] : null;
            };

            this.getId = function () {
                return id;
            };

// ----------------------------- default type --------------------------------------------


            var o = params.overlays || [], oo = {};
            if (this.defaultOverlayKeys) {
                for (var i = 0; i < this.defaultOverlayKeys.length; i++) {
                    Array.prototype.push.apply(o, this._jsPlumb.instance.Defaults[this.defaultOverlayKeys[i]] || []);
                }

                for (i = 0; i < o.length; i++) {
                    // if a string, convert to object representation so that we can store the typeid on it.
                    // also assign an id.
                    var fo = jsPlumb.convertToFullOverlaySpec(o[i]);
                    oo[fo[1].id] = fo;
                }
            }

            var _defaultType = {
                overlays:oo,
                parameters: params.parameters || {},
                scope: params.scope || this._jsPlumb.instance.getDefaultScope()
            };
            this.getDefaultType = function() {
                return _defaultType;
            };
            this.appendToDefaultType = function(obj) {
                for (var i in obj) {
                    _defaultType[i] = obj[i];
                }
            };

// ----------------------------- end default type --------------------------------------------

            // all components can generate events

            if (params.events) {
                for (var evtName in params.events) {
                    self.bind(evtName, params.events[evtName]);
                }
            }

            // all components get this clone function.
            // TODO issue 116 showed a problem with this - it seems 'a' that is in
            // the clone function's scope is shared by all invocations of it, the classic
            // JS closure problem.  for now, jsPlumb does a version of this inline where
            // it used to call clone.  but it would be nice to find some time to look
            // further at this.
            this.clone = function () {
                var o = Object.create(this.constructor.prototype);
                this.constructor.apply(o, a);
                return o;
            }.bind(this);

            // user can supply a beforeDetach callback, which will be executed before a detach
            // is performed; returning false prevents the detach.
            this.isDetachAllowed = function (connection) {
                var r = true;
                if (this._jsPlumb.beforeDetach) {
                    try {
                        r = this._jsPlumb.beforeDetach(connection);
                    }
                    catch (e) {
                        _ju.log("jsPlumb: beforeDetach callback failed", e);
                    }
                }
                return r;
            };

            // user can supply a beforeDrop callback, which will be executed before a dropped
            // connection is confirmed. user can return false to reject connection.
            this.isDropAllowed = function (sourceId, targetId, scope, connection, dropEndpoint, source, target) {
                var r = this._jsPlumb.instance.checkCondition("beforeDrop", {
                    sourceId: sourceId,
                    targetId: targetId,
                    scope: scope,
                    connection: connection,
                    dropEndpoint: dropEndpoint,
                    source: source, target: target
                });
                if (this._jsPlumb.beforeDrop) {
                    try {
                        r = this._jsPlumb.beforeDrop({
                            sourceId: sourceId,
                            targetId: targetId,
                            scope: scope,
                            connection: connection,
                            dropEndpoint: dropEndpoint,
                            source: source, target: target
                        });
                    }
                    catch (e) {
                        _ju.log("jsPlumb: beforeDrop callback failed", e);
                    }
                }
                return r;
            };

            var domListeners = [];

            // sets the component associated with listener events. for instance, an overlay delegates
            // its events back to a connector. but if the connector is swapped on the underlying connection,
            // then this component must be changed. This is called by setConnector in the Connection class.
            this.setListenerComponent = function (c) {
                for (var i = 0; i < domListeners.length; i++) {
                    domListeners[i][3] = c;
                }
            };


        };

    var _removeTypeCssHelper = function (component, typeIndex) {
        var typeId = component._jsPlumb.types[typeIndex],
            type = component._jsPlumb.instance.getType(typeId, component.getTypeDescriptor());

        if (type != null && type.cssClass && component.canvas) {
            component._jsPlumb.instance.removeClass(component.canvas, type.cssClass);
        }
    };

    _ju.extend(root.jsPlumbUIComponent, _ju.EventGenerator, {

        getParameter: function (name) {
            return this._jsPlumb.parameters[name];
        },

        setParameter: function (name, value) {
            this._jsPlumb.parameters[name] = value;
        },

        getParameters: function () {
            return this._jsPlumb.parameters;
        },

        setParameters: function (p) {
            this._jsPlumb.parameters = p;
        },

        getClass:function() {
            return jsPlumb.getClass(this.canvas);
        },

        hasClass:function(clazz) {
            return jsPlumb.hasClass(this.canvas, clazz);
        },

        addClass: function (clazz) {
            jsPlumb.addClass(this.canvas, clazz);
        },

        removeClass: function (clazz) {
            jsPlumb.removeClass(this.canvas, clazz);
        },

        updateClasses: function (classesToAdd, classesToRemove) {
            jsPlumb.updateClasses(this.canvas, classesToAdd, classesToRemove);
        },

        setType: function (typeId, params, doNotRepaint) {
            this.clearTypes();
            this._jsPlumb.types = _splitType(typeId) || [];
            _applyTypes(this, params, doNotRepaint);
        },

        getType: function () {
            return this._jsPlumb.types;
        },

        reapplyTypes: function (params, doNotRepaint) {
            _applyTypes(this, params, doNotRepaint);
        },

        hasType: function (typeId) {
            return this._jsPlumb.types.indexOf(typeId) !== -1;
        },

        addType: function (typeId, params, doNotRepaint) {
            var t = _splitType(typeId), _cont = false;
            if (t != null) {
                for (var i = 0, j = t.length; i < j; i++) {
                    if (!this.hasType(t[i])) {
                        this._jsPlumb.types.push(t[i]);
                        _cont = true;
                    }
                }
                if (_cont) {
                    _applyTypes(this, params, doNotRepaint);
                }
            }
        },

        removeType: function (typeId, params, doNotRepaint) {
            var t = _splitType(typeId), _cont = false, _one = function (tt) {
                var idx = this._jsPlumb.types.indexOf(tt);
                if (idx !== -1) {
                    // remove css class if necessary
                    _removeTypeCssHelper(this, idx);
                    this._jsPlumb.types.splice(idx, 1);
                    return true;
                }
                return false;
            }.bind(this);

            if (t != null) {
                for (var i = 0, j = t.length; i < j; i++) {
                    _cont = _one(t[i]) || _cont;
                }
                if (_cont) {
                    _applyTypes(this, params, doNotRepaint);
                }
            }
        },
        clearTypes: function (params, doNotRepaint) {
            var i = this._jsPlumb.types.length;
            for (var j = 0; j < i; j++) {
                _removeTypeCssHelper(this, 0);
                this._jsPlumb.types.splice(0, 1);
            }
            _applyTypes(this, params, doNotRepaint);
        },

        toggleType: function (typeId, params, doNotRepaint) {
            var t = _splitType(typeId);
            if (t != null) {
                for (var i = 0, j = t.length; i < j; i++) {
                    var idx = this._jsPlumb.types.indexOf(t[i]);
                    if (idx !== -1) {
                        _removeTypeCssHelper(this, idx);
                        this._jsPlumb.types.splice(idx, 1);
                    }
                    else {
                        this._jsPlumb.types.push(t[i]);
                    }
                }

                _applyTypes(this, params, doNotRepaint);
            }
        },
        applyType: function (t, doNotRepaint) {
            this.setPaintStyle(t.paintStyle, doNotRepaint);
            this.setHoverPaintStyle(t.hoverPaintStyle, doNotRepaint);
            if (t.parameters) {
                for (var i in t.parameters) {
                    this.setParameter(i, t.parameters[i]);
                }
            }
            this._jsPlumb.paintStyleInUse = this.getPaintStyle();
        },
        setPaintStyle: function (style, doNotRepaint) {
            // this._jsPlumb.paintStyle = jsPlumb.extend({}, style);
            // TODO figure out if we want components to clone paintStyle so as not to share it.
            this._jsPlumb.paintStyle = style;
            this._jsPlumb.paintStyleInUse = this._jsPlumb.paintStyle;
            _updateHoverStyle(this);
            if (!doNotRepaint) {
                this.repaint();
            }
        },
        getPaintStyle: function () {
            return this._jsPlumb.paintStyle;
        },
        setHoverPaintStyle: function (style, doNotRepaint) {
            //this._jsPlumb.hoverPaintStyle = jsPlumb.extend({}, style);
            // TODO figure out if we want components to clone paintStyle so as not to share it.
            this._jsPlumb.hoverPaintStyle = style;
            _updateHoverStyle(this);
            if (!doNotRepaint) {
                this.repaint();
            }
        },
        getHoverPaintStyle: function () {
            return this._jsPlumb.hoverPaintStyle;
        },
        destroy: function (force) {
            if (force || this.typeId == null) {
                this.cleanupListeners(); // this is on EventGenerator
                this.clone = null;
                this._jsPlumb = null;
            }
        },

        isHover: function () {
            return this._jsPlumb.hover;
        },

        setHover: function (hover, ignoreAttachedElements, timestamp) {
            // while dragging, we ignore these events.  this keeps the UI from flashing and
            // swishing and whatevering.
            if (this._jsPlumb && !this._jsPlumb.instance.currentlyDragging && !this._jsPlumb.instance.isHoverSuspended()) {

                this._jsPlumb.hover = hover;
                var method = hover ? "addClass" : "removeClass";

                if (this.canvas != null) {
                    if (this._jsPlumb.instance.hoverClass != null) {
                        this._jsPlumb.instance[method](this.canvas, this._jsPlumb.instance.hoverClass);
                    }
                    if (this._jsPlumb.hoverClass != null) {
                        this._jsPlumb.instance[method](this.canvas, this._jsPlumb.hoverClass);
                    }
                }
                if (this._jsPlumb.hoverPaintStyle != null) {
                    this._jsPlumb.paintStyleInUse = hover ? this._jsPlumb.hoverPaintStyle : this._jsPlumb.paintStyle;
                    if (!this._jsPlumb.instance.isSuspendDrawing()) {
                        timestamp = timestamp || _timestamp();
                        this.repaint({timestamp: timestamp, recalc: false});
                    }
                }
                // get the list of other affected elements, if supported by this component.
                // for a connection, its the endpoints.  for an endpoint, its the connections! surprise.
                if (this.getAttachedElements && !ignoreAttachedElements) {
                    _updateAttachedElements(this, hover, _timestamp(), this);
                }
            }
        }
    });

// ------------------------------ END jsPlumbUIComponent --------------------------------------------

    var _jsPlumbInstanceIndex = 0,
        getInstanceIndex = function () {
            var i = _jsPlumbInstanceIndex + 1;
            _jsPlumbInstanceIndex++;
            return i;
        };

    var jsPlumbInstance = root.jsPlumbInstance = function (_defaults) {

        this.version = "2.6.8";

        if (_defaults) {
            jsPlumb.extend(this.Defaults, _defaults);
        }

        this.logEnabled = this.Defaults.LogEnabled;
        this._connectionTypes = {};
        this._endpointTypes = {};

        _ju.EventGenerator.apply(this);

        var _currentInstance = this,
            _instanceIndex = getInstanceIndex(),
            _bb = _currentInstance.bind,
            _initialDefaults = {},
            _zoom = 1,
            _info = function (el) {
                if (el == null) {
                    return null;
                }
                else if (el.nodeType === 3 || el.nodeType === 8) {
                    return { el:el, text:true };
                }
                else {
                    var _el = _currentInstance.getElement(el);
                    return { el: _el, id: (_ju.isString(el) && _el == null) ? el : _getId(_el) };
                }
            };

        this.getInstanceIndex = function () {
            return _instanceIndex;
        };

        // CONVERTED
        this.setZoom = function (z, repaintEverything) {
            _zoom = z;
            _currentInstance.fire("zoom", _zoom);
            if (repaintEverything) {
                _currentInstance.repaintEverything();
            }
            return true;
        };
        // CONVERTED
        this.getZoom = function () {
            return _zoom;
        };

        for (var i in this.Defaults) {
            _initialDefaults[i] = this.Defaults[i];
        }

        var _container, _containerDelegations = [];
        this.unbindContainer = function() {
            if (_container != null && _containerDelegations.length > 0) {
                for (var i = 0; i < _containerDelegations.length; i++) {
                    _currentInstance.off(_container, _containerDelegations[i][0], _containerDelegations[i][1]);
                }
            }
        };
        this.setContainer = function (c) {

            this.unbindContainer();

            // get container as dom element.
            c = this.getElement(c);
            // move existing connections and endpoints, if any.
            this.select().each(function (conn) {
                conn.moveParent(c);
            });
            this.selectEndpoints().each(function (ep) {
                ep.moveParent(c);
            });

            // set container.
            var previousContainer = _container;
            _container = c;
            _containerDelegations.length = 0;
            var eventAliases = {
                "endpointclick":"endpointClick",
                "endpointdblclick":"endpointDblClick"
            };

            var _oneDelegateHandler = function (id, e, componentType) {
                var t = e.srcElement || e.target,
                    jp = (t && t.parentNode ? t.parentNode._jsPlumb : null) || (t ? t._jsPlumb : null) || (t && t.parentNode && t.parentNode.parentNode ? t.parentNode.parentNode._jsPlumb : null);
                if (jp) {
                    jp.fire(id, jp, e);
                    var alias = componentType ? eventAliases[componentType + id] || id : id;
                    // jsplumb also fires every event coming from components/overlays. That's what the test for `jp.component` is for.
                    _currentInstance.fire(alias, jp.component || jp, e);
                }
            };

            var _addOneDelegate = function(eventId, selector, fn) {
                _containerDelegations.push([eventId, fn]);
                _currentInstance.on(_container, eventId, selector, fn);
            };

            // delegate one event on the container to jsplumb elements. it might be possible to
            // abstract this out: each of endpoint, connection and overlay could register themselves with
            // jsplumb as "component types" or whatever, and provide a suitable selector. this would be
            // done by the renderer (although admittedly from 2.0 onwards we're not supporting vml anymore)
            var _oneDelegate = function (id) {
                // connections.
                _addOneDelegate(id, ".jtk-connector", function (e) {
                    _oneDelegateHandler(id, e);
                });
                // endpoints. note they can have an enclosing div, or not.
                _addOneDelegate(id, ".jtk-endpoint", function (e) {
                    _oneDelegateHandler(id, e, "endpoint");
                });
                // overlays
                _addOneDelegate(id, ".jtk-overlay", function (e) {
                    _oneDelegateHandler(id, e);
                });
            };

            for (var i = 0; i < events.length; i++) {
                _oneDelegate(events[i]);
            }

            // managed elements
            for (var elId in managedElements) {
                var el = managedElements[elId].el;
                if (el.parentNode === previousContainer) {
                    previousContainer.removeChild(el);
                    _container.appendChild(el);
                }
            }

        };
        this.getContainer = function () {
            return _container;
        };

        this.bind = function (event, fn) {
            if ("ready" === event && initialized) {
                fn();
            }
            else {
                _bb.apply(_currentInstance, [event, fn]);
            }
        };

        _currentInstance.importDefaults = function (d) {
            for (var i in d) {
                _currentInstance.Defaults[i] = d[i];
            }
            if (d.Container) {
                _currentInstance.setContainer(d.Container);
            }

            return _currentInstance;
        };

        _currentInstance.restoreDefaults = function () {
            _currentInstance.Defaults = jsPlumb.extend({}, _initialDefaults);
            return _currentInstance;
        };

        var log = null,
            initialized = false,
        // TODO remove from window scope
            connections = [],
        // map of element id -> endpoint lists. an element can have an arbitrary
        // number of endpoints on it, and not all of them have to be connected
        // to anything.
            endpointsByElement = {},
            endpointsByUUID = {},
            managedElements = {},
            offsets = {},
            offsetTimestamps = {},
            draggableStates = {},
            connectionBeingDragged = false,
            sizes = [],
            _suspendDrawing = false,
            _suspendedAt = null,
            DEFAULT_SCOPE = this.Defaults.Scope,
            _curIdStamp = 1,
            _idstamp = function () {
                return "" + _curIdStamp++;
            },

        //
        // appends an element to some other element, which is calculated as follows:
        //
        // 1. if Container exists, use that element.
        // 2. if the 'parent' parameter exists, use that.
        // 3. otherwise just use the root element.
        //
        //
            _appendElement = function (el, parent) {
                if (_container) {
                    _container.appendChild(el);
                }
                else if (!parent) {
                    this.appendToRoot(el);
                }
                else {
                    this.getElement(parent).appendChild(el);
                }
            }.bind(this),

        //
        // Draws an endpoint and its connections. this is the main entry point into drawing connections as well
        // as endpoints, since jsPlumb is endpoint-centric under the hood.
        //
        // @param element element to draw (of type library specific element object)
        // @param ui UI object from current library's event system. optional.
        // @param timestamp timestamp for this paint cycle. used to speed things up a little by cutting down the amount of offset calculations we do.
        // @param clearEdits defaults to false; indicates that mouse edits for connectors should be cleared
        ///
            _draw = function (element, ui, timestamp, clearEdits) {

                if (!_suspendDrawing) {
                    var id = _getId(element),
                        repaintEls,
                        dm = _currentInstance.getDragManager();

                    if (dm) {
                        repaintEls = dm.getElementsForDraggable(id);
                    }

                    if (timestamp == null) {
                        timestamp = _timestamp();
                    }

                    // update the offset of everything _before_ we try to draw anything.
                    var o = _updateOffset({ elId: id, offset: ui, recalc: false, timestamp: timestamp });

                    if (repaintEls && o && o.o) {
                        for (var i in repaintEls) {
                            _updateOffset({
                                elId: repaintEls[i].id,
                                offset: {
                                    left: o.o.left + repaintEls[i].offset.left,
                                    top: o.o.top + repaintEls[i].offset.top
                                },
                                recalc: false,
                                timestamp: timestamp
                            });
                        }
                    }

                    _currentInstance.anchorManager.redraw(id, ui, timestamp, null, clearEdits);

                    if (repaintEls) {
                        for (var j in repaintEls) {
                            _currentInstance.anchorManager.redraw(repaintEls[j].id, ui, timestamp, repaintEls[j].offset, clearEdits, true);
                        }
                    }
                }
            },

        //
        // gets an Endpoint by uuid.
        //
            _getEndpoint = function (uuid) {
                return endpointsByUUID[uuid];
            },

            /**
             * inits a draggable if it's not already initialised.
             * TODO: somehow abstract this to the adapter, because the concept of "draggable" has no
             * place on the server.
             */
            _initDraggableIfNecessary = function (element, isDraggable, dragOptions, id, fireEvent) {
                // move to DragManager?
                if (!jsPlumb.headless) {
                    var _draggable = isDraggable == null ? false : isDraggable;
                    if (_draggable) {
                        if (jsPlumb.isDragSupported(element, _currentInstance)) {
                            var options = dragOptions || _currentInstance.Defaults.DragOptions;
                            options = jsPlumb.extend({}, options); // make a copy.
                            if (!jsPlumb.isAlreadyDraggable(element, _currentInstance)) {
                                var dragEvent = jsPlumb.dragEvents.drag,
                                    stopEvent = jsPlumb.dragEvents.stop,
                                    startEvent = jsPlumb.dragEvents.start,
                                    _started = false;

                                _manage(id, element);

                                options[startEvent] = _ju.wrap(options[startEvent], function () {
                                    _currentInstance.setHoverSuspended(true);
                                    _currentInstance.select({source: element}).addClass(_currentInstance.elementDraggingClass + " " + _currentInstance.sourceElementDraggingClass, true);
                                    _currentInstance.select({target: element}).addClass(_currentInstance.elementDraggingClass + " " + _currentInstance.targetElementDraggingClass, true);
                                    _currentInstance.setConnectionBeingDragged(true);
                                    if (options.canDrag) {
                                        return dragOptions.canDrag();
                                    }
                                }, false);

                                options[dragEvent] = _ju.wrap(options[dragEvent], function () {
                                    var ui = _currentInstance.getUIPosition(arguments, _currentInstance.getZoom());
                                    if (ui != null) {
                                        _draw(element, ui, null, true);
                                        if (_started) {
                                            _currentInstance.addClass(element, "jtk-dragged");
                                        }
                                        _started = true;
                                    }
                                });
                                options[stopEvent] = _ju.wrap(options[stopEvent], function () {
                                    var elements = arguments[0].selection, uip;

                                    var _one = function (_e) {
                                        if (_e[1] != null) {
                                            // run the reported offset through the code that takes parent containers
                                            // into account, to adjust if necessary (issue 554)
                                            uip = _currentInstance.getUIPosition([{
                                                el:_e[2].el,
                                                pos:[_e[1].left, _e[1].top]
                                            }]);
                                            _draw(_e[2].el, uip);
                                        }
                                        _currentInstance.removeClass(_e[0], "jtk-dragged");
                                        _currentInstance.select({source: _e[2].el}).removeClass(_currentInstance.elementDraggingClass + " " + _currentInstance.sourceElementDraggingClass, true);
                                        _currentInstance.select({target: _e[2].el}).removeClass(_currentInstance.elementDraggingClass + " " + _currentInstance.targetElementDraggingClass, true);
                                        _currentInstance.getDragManager().dragEnded(_e[2].el);
                                    };

                                    for (var i = 0; i < elements.length; i++) {
                                        _one(elements[i]);
                                    }

                                    _started = false;
                                    _currentInstance.setHoverSuspended(false);
                                    _currentInstance.setConnectionBeingDragged(false);
                                });
                                var elId = _getId(element); // need ID
                                draggableStates[elId] = true;
                                var draggable = draggableStates[elId];
                                options.disabled = draggable == null ? false : !draggable;
                                _currentInstance.initDraggable(element, options);
                                _currentInstance.getDragManager().register(element);
                                if (fireEvent) {
                                    _currentInstance.fire("elementDraggable", {el:element, options:options});
                                }
                            }
                            else {
                                // already draggable. attach any start, drag or stop listeners to the current Drag.
                                if (dragOptions.force) {
                                    _currentInstance.initDraggable(element, options);
                                }
                            }
                        }
                    }
                }
            },

            _scopeMatch = function (e1, e2) {
                var s1 = e1.scope.split(/\s/), s2 = e2.scope.split(/\s/);
                for (var i = 0; i < s1.length; i++) {
                    for (var j = 0; j < s2.length; j++) {
                        if (s2[j] === s1[i]) {
                            return true;
                        }
                    }
                }

                return false;
            },

            _mergeOverrides = function (def, values) {
                var m = jsPlumb.extend({}, def);
                for (var i in values) {
                    if (values[i]) {
                        m[i] = values[i];
                    }
                }
                return m;
            },

        /*
         * prepares a final params object that can be passed to _newConnection, taking into account defaults, events, etc.
         */
            _prepareConnectionParams = function (params, referenceParams) {
                var _p = jsPlumb.extend({ }, params);
                if (referenceParams) {
                    jsPlumb.extend(_p, referenceParams);
                }

                // hotwire endpoints passed as source or target to sourceEndpoint/targetEndpoint, respectively.
                if (_p.source) {
                    if (_p.source.endpoint) {
                        _p.sourceEndpoint = _p.source;
                    }
                    else {
                        _p.source = _currentInstance.getElement(_p.source);
                    }
                }
                if (_p.target) {
                    if (_p.target.endpoint) {
                        _p.targetEndpoint = _p.target;
                    }
                    else {
                        _p.target = _currentInstance.getElement(_p.target);
                    }
                }

                // test for endpoint uuids to connect
                if (params.uuids) {
                    _p.sourceEndpoint = _getEndpoint(params.uuids[0]);
                    _p.targetEndpoint = _getEndpoint(params.uuids[1]);
                }

                // now ensure that if we do have Endpoints already, they're not full.
                // source:
                if (_p.sourceEndpoint && _p.sourceEndpoint.isFull()) {
                    _ju.log(_currentInstance, "could not add connection; source endpoint is full");
                    return;
                }

                // target:
                if (_p.targetEndpoint && _p.targetEndpoint.isFull()) {
                    _ju.log(_currentInstance, "could not add connection; target endpoint is full");
                    return;
                }

                // if source endpoint mandates connection type and nothing specified in our params, use it.
                if (!_p.type && _p.sourceEndpoint) {
                    _p.type = _p.sourceEndpoint.connectionType;
                }

                // copy in any connectorOverlays that were specified on the source endpoint.
                // it doesnt copy target endpoint overlays.  i'm not sure if we want it to or not.
                if (_p.sourceEndpoint && _p.sourceEndpoint.connectorOverlays) {
                    _p.overlays = _p.overlays || [];
                    for (var i = 0, j = _p.sourceEndpoint.connectorOverlays.length; i < j; i++) {
                        _p.overlays.push(_p.sourceEndpoint.connectorOverlays[i]);
                    }
                }

                // scope
                if (_p.sourceEndpoint && _p.sourceEndpoint.scope) {
                    _p.scope = _p.sourceEndpoint.scope;
                }

                // pointer events
                if (!_p["pointer-events"] && _p.sourceEndpoint && _p.sourceEndpoint.connectorPointerEvents) {
                    _p["pointer-events"] = _p.sourceEndpoint.connectorPointerEvents;
                }


                var _addEndpoint = function (el, def, idx) {
                    return _currentInstance.addEndpoint(el, _mergeOverrides(def, {
                        anchor: _p.anchors ? _p.anchors[idx] : _p.anchor,
                        endpoint: _p.endpoints ? _p.endpoints[idx] : _p.endpoint,
                        paintStyle: _p.endpointStyles ? _p.endpointStyles[idx] : _p.endpointStyle,
                        hoverPaintStyle: _p.endpointHoverStyles ? _p.endpointHoverStyles[idx] : _p.endpointHoverStyle
                    }));
                };

                // check for makeSource/makeTarget specs.

                var _oneElementDef = function (type, idx, defs, matchType) {
                    if (_p[type] && !_p[type].endpoint && !_p[type + "Endpoint"] && !_p.newConnection) {
                        var tid = _getId(_p[type]), tep = defs[tid];

                        tep = tep ? tep[matchType] : null;

                        if (tep) {
                            // if not enabled, return.
                            if (!tep.enabled) {
                                return false;
                            }
                            var newEndpoint = tep.endpoint != null && tep.endpoint._jsPlumb ? tep.endpoint : _addEndpoint(_p[type], tep.def, idx);
                            if (newEndpoint.isFull()) {
                                return false;
                            }
                            _p[type + "Endpoint"] = newEndpoint;
                            if (!_p.scope && tep.def.scope) {
                                _p.scope = tep.def.scope;
                            } // provide scope if not already provided and endpoint def has one.
                            if (tep.uniqueEndpoint) {
                                if (!tep.endpoint) {
                                    tep.endpoint = newEndpoint;
                                    newEndpoint.setDeleteOnEmpty(false);
                                }
                                else {
                                    newEndpoint.finalEndpoint = tep.endpoint;
                                }
                            } else {
                                newEndpoint.setDeleteOnEmpty(true);
                            }

                            //
                            // copy in connector overlays if present on the source definition.
                            //
                            if (idx === 0 && tep.def.connectorOverlays) {
                                _p.overlays = _p.overlays || [];
                                Array.prototype.push.apply(_p.overlays, tep.def.connectorOverlays);
                            }
                        }
                    }
                };

                if (_oneElementDef("source", 0, this.sourceEndpointDefinitions, _p.type || "default") === false) {
                    return;
                }
                if (_oneElementDef("target", 1, this.targetEndpointDefinitions, _p.type || "default") === false) {
                    return;
                }

                // last, ensure scopes match
                if (_p.sourceEndpoint && _p.targetEndpoint) {
                    if (!_scopeMatch(_p.sourceEndpoint, _p.targetEndpoint)) {
                        _p = null;
                    }
                }

                return _p;
            }.bind(_currentInstance),

            _newConnection = function (params) {
                var connectionFunc = _currentInstance.Defaults.ConnectionType || _currentInstance.getDefaultConnectionType();

                params._jsPlumb = _currentInstance;
                params.newConnection = _newConnection;
                params.newEndpoint = _newEndpoint;
                params.endpointsByUUID = endpointsByUUID;
                params.endpointsByElement = endpointsByElement;
                params.finaliseConnection = _finaliseConnection;
                params.id = "con_" + _idstamp();
                var con = new connectionFunc(params);

                // if the connection is draggable, then maybe we need to tell the target endpoint to init the
                // dragging code. it won't run again if it already configured to be draggable.
                if (con.isDetachable()) {
                    con.endpoints[0].initDraggable("_jsPlumbSource");
                    con.endpoints[1].initDraggable("_jsPlumbTarget");
                }

                return con;
            },

        //
        // adds the connection to the backing model, fires an event if necessary and then redraws
        //
            _finaliseConnection = _currentInstance.finaliseConnection = function (jpc, params, originalEvent, doInformAnchorManager) {
                params = params || {};
                // add to list of connections (by scope).
                if (!jpc.suspendedEndpoint) {
                    connections.push(jpc);
                }

                jpc.pending = null;

                // turn off isTemporarySource on the source endpoint (only viable on first draw)
                jpc.endpoints[0].isTemporarySource = false;

                // always inform the anchor manager
                // except that if jpc has a suspended endpoint it's not true to say the
                // connection is new; it has just (possibly) moved. the question is whether
                // to make that call here or in the anchor manager.  i think perhaps here.
                if (doInformAnchorManager !== false) {
                    _currentInstance.anchorManager.newConnection(jpc);
                }

                // force a paint
                _draw(jpc.source);

                // fire an event
                if (!params.doNotFireConnectionEvent && params.fireEvent !== false) {

                    var eventArgs = {
                        connection: jpc,
                        source: jpc.source, target: jpc.target,
                        sourceId: jpc.sourceId, targetId: jpc.targetId,
                        sourceEndpoint: jpc.endpoints[0], targetEndpoint: jpc.endpoints[1]
                    };

                    _currentInstance.fire("connection", eventArgs, originalEvent);
                }
            },

        /*
         factory method to prepare a new endpoint.  this should always be used instead of creating Endpoints
         manually, since this method attaches event listeners and an id.
         */
            _newEndpoint = function (params, id) {
                var endpointFunc = _currentInstance.Defaults.EndpointType || jsPlumb.Endpoint;
                var _p = jsPlumb.extend({}, params);
                _p._jsPlumb = _currentInstance;
                _p.newConnection = _newConnection;
                _p.newEndpoint = _newEndpoint;
                _p.endpointsByUUID = endpointsByUUID;
                _p.endpointsByElement = endpointsByElement;
                _p.fireDetachEvent = fireDetachEvent;
                _p.elementId = id || _getId(_p.source);
                var ep = new endpointFunc(_p);
                ep.id = "ep_" + _idstamp();
                _manage(_p.elementId, _p.source);

                if (!jsPlumb.headless) {
                    _currentInstance.getDragManager().endpointAdded(_p.source, id);
                }

                return ep;
            },

        /*
         * performs the given function operation on all the connections found
         * for the given element id; this means we find all the endpoints for
         * the given element, and then for each endpoint find the connectors
         * connected to it. then we pass each connection in to the given
         * function.
         */
            _operation = function (elId, func, endpointFunc) {
                var endpoints = endpointsByElement[elId];
                if (endpoints && endpoints.length) {
                    for (var i = 0, ii = endpoints.length; i < ii; i++) {
                        for (var j = 0, jj = endpoints[i].connections.length; j < jj; j++) {
                            var retVal = func(endpoints[i].connections[j]);
                            // if the function passed in returns true, we exit.
                            // most functions return false.
                            if (retVal) {
                                return;
                            }
                        }
                        if (endpointFunc) {
                            endpointFunc(endpoints[i]);
                        }
                    }
                }
            },

            _setDraggable = function (element, draggable) {
                return jsPlumb.each(element, function (el) {
                    if (_currentInstance.isDragSupported(el)) {
                        draggableStates[_currentInstance.getAttribute(el, "id")] = draggable;
                        _currentInstance.setElementDraggable(el, draggable);
                    }
                });
            },
        /*
         * private method to do the business of hiding/showing.
         *
         * @param el
         *            either Id of the element in question or a library specific
         *            object for the element.
         * @param state
         *            String specifying a value for the css 'display' property
         *            ('block' or 'none').
         */
            _setVisible = function (el, state, alsoChangeEndpoints) {
                state = state === "block";
                var endpointFunc = null;
                if (alsoChangeEndpoints) {
                    endpointFunc = function (ep) {
                        ep.setVisible(state, true, true);
                    };
                }
                var info = _info(el);
                _operation(info.id, function (jpc) {
                    if (state && alsoChangeEndpoints) {
                        // this test is necessary because this functionality is new, and i wanted to maintain backwards compatibility.
                        // this block will only set a connection to be visible if the other endpoint in the connection is also visible.
                        var oidx = jpc.sourceId === info.id ? 1 : 0;
                        if (jpc.endpoints[oidx].isVisible()) {
                            jpc.setVisible(true);
                        }
                    }
                    else { // the default behaviour for show, and what always happens for hide, is to just set the visibility without getting clever.
                        jpc.setVisible(state);
                    }
                }, endpointFunc);
            },
        /*
         * toggles the draggable state of the given element(s).
         * el is either an id, or an element object, or a list of ids/element objects.
         */
            _toggleDraggable = function (el) {
                var state;
                jsPlumb.each(el, function (el) {
                    var elId = _currentInstance.getAttribute(el, "id");
                    state = draggableStates[elId] == null ? false : draggableStates[elId];
                    state = !state;
                    draggableStates[elId] = state;
                    _currentInstance.setDraggable(el, state);
                    return state;
                }.bind(this));
                return state;
            },
            /**
             * private method to do the business of toggling hiding/showing.
             */
            _toggleVisible = function (elId, changeEndpoints) {
                var endpointFunc = null;
                if (changeEndpoints) {
                    endpointFunc = function (ep) {
                        var state = ep.isVisible();
                        ep.setVisible(!state);
                    };
                }
                _operation(elId, function (jpc) {
                    var state = jpc.isVisible();
                    jpc.setVisible(!state);
                }, endpointFunc);
            },

        // TODO comparison performance
            _getCachedData = function (elId) {
                var o = offsets[elId];
                if (!o) {
                    return _updateOffset({elId: elId});
                }
                else {
                    return {o: o, s: sizes[elId]};
                }
            },

            /**
             * gets an id for the given element, creating and setting one if
             * necessary.  the id is of the form
             *
             *    jsPlumb_<instance index>_<index in instance>
             *
             * where "index in instance" is a monotonically increasing integer that starts at 0,
             * for each instance.  this method is used not only to assign ids to elements that do not
             * have them but also to connections and endpoints.
             */
            _getId = function (element, uuid, doNotCreateIfNotFound) {
                if (_ju.isString(element)) {
                    return element;
                }
                if (element == null) {
                    return null;
                }
                var id = _currentInstance.getAttribute(element, "id");
                if (!id || id === "undefined") {
                    // check if fixed uuid parameter is given
                    if (arguments.length === 2 && arguments[1] !== undefined) {
                        id = uuid;
                    }
                    else if (arguments.length === 1 || (arguments.length === 3 && !arguments[2])) {
                        id = "jsPlumb_" + _instanceIndex + "_" + _idstamp();
                    }

                    if (!doNotCreateIfNotFound) {
                        _currentInstance.setAttribute(element, "id", id);
                    }
                }
                return id;
            };

        this.setConnectionBeingDragged = function (v) {
            connectionBeingDragged = v;
        };
        this.isConnectionBeingDragged = function () {
            return connectionBeingDragged;
        };

        /**
         * Returns a map of all the elements this jsPlumbInstance is currently managing.
         * @returns {Object} Map of [id-> {el, endpoint[], connection, position}] information.
         */
        this.getManagedElements = function() {
            return managedElements;
        };

        this.connectorClass = "jtk-connector";
        this.connectorOutlineClass = "jtk-connector-outline";
        this.editableConnectorClass = "jtk-connector-editable";
        this.connectedClass = "jtk-connected";
        this.hoverClass = "jtk-hover";
        this.endpointClass = "jtk-endpoint";
        this.endpointConnectedClass = "jtk-endpoint-connected";
        this.endpointFullClass = "jtk-endpoint-full";
        this.endpointDropAllowedClass = "jtk-endpoint-drop-allowed";
        this.endpointDropForbiddenClass = "jtk-endpoint-drop-forbidden";
        this.overlayClass = "jtk-overlay";
        this.draggingClass = "jtk-dragging";// CONVERTED
        this.elementDraggingClass = "jtk-element-dragging";// CONVERTED
        this.sourceElementDraggingClass = "jtk-source-element-dragging"; // CONVERTED
        this.targetElementDraggingClass = "jtk-target-element-dragging";// CONVERTED
        this.endpointAnchorClassPrefix = "jtk-endpoint-anchor";
        this.hoverSourceClass = "jtk-source-hover";
        this.hoverTargetClass = "jtk-target-hover";
        this.dragSelectClass = "jtk-drag-select";

        this.Anchors = {};
        this.Connectors = {  "svg": {} };
        this.Endpoints = { "svg": {} };
        this.Overlays = { "svg": {} } ;
        this.ConnectorRenderers = {};
        this.SVG = "svg";

// --------------------------- jsPlumbInstance public API ---------------------------------------------------------


        this.addEndpoint = function (el, params, referenceParams) {
            referenceParams = referenceParams || {};
            var p = jsPlumb.extend({}, referenceParams);
            jsPlumb.extend(p, params);
            p.endpoint = p.endpoint || _currentInstance.Defaults.Endpoint;
            p.paintStyle = p.paintStyle || _currentInstance.Defaults.EndpointStyle;

            var results = [],
                inputs = (_ju.isArray(el) || (el.length != null && !_ju.isString(el))) ? el : [ el ];

            for (var i = 0, j = inputs.length; i < j; i++) {
                p.source = _currentInstance.getElement(inputs[i]);
                _ensureContainer(p.source);

                var id = _getId(p.source), e = _newEndpoint(p, id);

                // ensure element is managed.
                var myOffset = _manage(id, p.source).info.o;
                _ju.addToList(endpointsByElement, id, e);

                if (!_suspendDrawing) {
                    e.paint({
                        anchorLoc: e.anchor.compute({ xy: [ myOffset.left, myOffset.top ], wh: sizes[id], element: e, timestamp: _suspendedAt }),
                        timestamp: _suspendedAt
                    });
                }

                results.push(e);
            }

            return results.length === 1 ? results[0] : results;
        };

        this.addEndpoints = function (el, endpoints, referenceParams) {
            var results = [];
            for (var i = 0, j = endpoints.length; i < j; i++) {
                var e = _currentInstance.addEndpoint(el, endpoints[i], referenceParams);
                if (_ju.isArray(e)) {
                    Array.prototype.push.apply(results, e);
                }
                else {
                    results.push(e);
                }
            }
            return results;
        };

        this.animate = function (el, properties, options) {
            if (!this.animationSupported) {
                return false;
            }

            options = options || {};
            var del = _currentInstance.getElement(el),
                id = _getId(del),
                stepFunction = jsPlumb.animEvents.step,
                completeFunction = jsPlumb.animEvents.complete;

            options[stepFunction] = _ju.wrap(options[stepFunction], function () {
                _currentInstance.revalidate(id);
            });

            // onComplete repaints, just to make sure everything looks good at the end of the animation.
            options[completeFunction] = _ju.wrap(options[completeFunction], function () {
                _currentInstance.revalidate(id);
            });

            _currentInstance.doAnimate(del, properties, options);
        };

        /**
         * checks for a listener for the given condition, executing it if found, passing in the given value.
         * condition listeners would have been attached using "bind" (which is, you could argue, now overloaded, since
         * firing click events etc is a bit different to what this does).  i thought about adding a "bindCondition"
         * or something, but decided against it, for the sake of simplicity. jsPlumb will never fire one of these
         * condition events anyway.
         */
        this.checkCondition = function (conditionName, args) {
            var l = _currentInstance.getListener(conditionName),
                r = true;

            if (l && l.length > 0) {
                var values = Array.prototype.slice.call(arguments, 1);
                try {
                    for (var i = 0, j = l.length; i < j; i++) {
                        r = r && l[i].apply(l[i], values);
                    }
                }
                catch (e) {
                    _ju.log(_currentInstance, "cannot check condition [" + conditionName + "]" + e);
                }
            }
            return r;
        };

        this.connect = function (params, referenceParams) {
            // prepare a final set of parameters to create connection with
            var _p = _prepareConnectionParams(params, referenceParams), jpc;
            // TODO probably a nicer return value if the connection was not made.  _prepareConnectionParams
            // will return null (and log something) if either endpoint was full.  what would be nicer is to
            // create a dedicated 'error' object.
            if (_p) {
                if (_p.source == null && _p.sourceEndpoint == null) {
                    _ju.log("Cannot establish connection - source does not exist");
                    return;
                }
                if (_p.target == null && _p.targetEndpoint == null) {
                    _ju.log("Cannot establish connection - target does not exist");
                    return;
                }
                _ensureContainer(_p.source);
                // create the connection.  it is not yet registered
                jpc = _newConnection(_p);
                // now add it the model, fire an event, and redraw
                _finaliseConnection(jpc, _p);
            }
            return jpc;
        };

        var stTypes = [
            { el: "source", elId: "sourceId", epDefs: "sourceEndpointDefinitions" },
            { el: "target", elId: "targetId", epDefs: "targetEndpointDefinitions" }
        ];

        var _set = function (c, el, idx, doNotRepaint) {
            var ep, _st = stTypes[idx], cId = c[_st.elId], cEl = c[_st.el], sid, sep,
                oldEndpoint = c.endpoints[idx];

            var evtParams = {
                index: idx,
                originalSourceId: idx === 0 ? cId : c.sourceId,
                newSourceId: c.sourceId,
                originalTargetId: idx === 1 ? cId : c.targetId,
                newTargetId: c.targetId,
                connection: c
            };

            if (el.constructor === jsPlumb.Endpoint) {
                ep = el;
                ep.addConnection(c);
                el = ep.element;
            }
            else {
                sid = _getId(el);
                sep = this[_st.epDefs][sid];

                if (sid === c[_st.elId]) {
                    ep = null; // dont change source/target if the element is already the one given.
                }
                else if (sep) {
                    for (var t in sep) {
                        if (!sep[t].enabled) {
                            return;
                        }
                        ep = sep[t].endpoint != null && sep[t].endpoint._jsPlumb ? sep[t].endpoint : this.addEndpoint(el, sep[t].def);
                        if (sep[t].uniqueEndpoint) {
                            sep[t].endpoint = ep;
                        }
                        ep.addConnection(c);
                    }
                }
                else {
                    ep = c.makeEndpoint(idx === 0, el, sid);
                }
            }

            if (ep != null) {
                oldEndpoint.detachFromConnection(c);
                c.endpoints[idx] = ep;
                c[_st.el] = ep.element;
                c[_st.elId] = ep.elementId;
                evtParams[idx === 0 ? "newSourceId" : "newTargetId"] = ep.elementId;

                fireMoveEvent(evtParams);

                if (!doNotRepaint) {
                    c.repaint();
                }
            }

            evtParams.element = el;
            return evtParams;

        }.bind(this);

        this.setSource = function (connection, el, doNotRepaint) {
            var p = _set(connection, el, 0, doNotRepaint);
            this.anchorManager.sourceChanged(p.originalSourceId, p.newSourceId, connection, p.el);
        };
        this.setTarget = function (connection, el, doNotRepaint) {
            var p = _set(connection, el, 1, doNotRepaint);
            this.anchorManager.updateOtherEndpoint(p.originalSourceId, p.originalTargetId, p.newTargetId, connection);
        };

        this.deleteEndpoint = function (object, dontUpdateHover, deleteAttachedObjects) {
            var endpoint = (typeof object === "string") ? endpointsByUUID[object] : object;
            if (endpoint) {
                _currentInstance.deleteObject({ endpoint: endpoint, dontUpdateHover: dontUpdateHover, deleteAttachedObjects:deleteAttachedObjects });
            }
            return _currentInstance;
        };

        this.deleteEveryEndpoint = function () {
            var _is = _currentInstance.setSuspendDrawing(true);
            for (var id in endpointsByElement) {
                var endpoints = endpointsByElement[id];
                if (endpoints && endpoints.length) {
                    for (var i = 0, j = endpoints.length; i < j; i++) {
                        _currentInstance.deleteEndpoint(endpoints[i], true);
                    }
                }
            }
            endpointsByElement = {};
            managedElements = {};
            endpointsByUUID = {};
            offsets = {};
            offsetTimestamps = {};
            _currentInstance.anchorManager.reset();
            var dm = _currentInstance.getDragManager();
            if (dm) {
                dm.reset();
            }
            if (!_is) {
                _currentInstance.setSuspendDrawing(false);
            }
            return _currentInstance;
        };

        var fireDetachEvent = function (jpc, doFireEvent, originalEvent) {
            // may have been given a connection, or in special cases, an object
            var connType = _currentInstance.Defaults.ConnectionType || _currentInstance.getDefaultConnectionType(),
                argIsConnection = jpc.constructor === connType,
                params = argIsConnection ? {
                    connection: jpc,
                    source: jpc.source, target: jpc.target,
                    sourceId: jpc.sourceId, targetId: jpc.targetId,
                    sourceEndpoint: jpc.endpoints[0], targetEndpoint: jpc.endpoints[1]
                } : jpc;

            if (doFireEvent) {
                _currentInstance.fire("connectionDetached", params, originalEvent);
            }

            // always fire this. used by internal jsplumb stuff.
            _currentInstance.fire("internal.connectionDetached", params, originalEvent);

            _currentInstance.anchorManager.connectionDetached(params);
        };

        var fireMoveEvent = _currentInstance.fireMoveEvent = function (params, evt) {
            _currentInstance.fire("connectionMoved", params, evt);
        };

        this.unregisterEndpoint = function (endpoint) {
            if (endpoint._jsPlumb.uuid) {
                endpointsByUUID[endpoint._jsPlumb.uuid] = null;
            }
            _currentInstance.anchorManager.deleteEndpoint(endpoint);
            // TODO at least replace this with a removeWithFunction call.
            for (var e in endpointsByElement) {
                var endpoints = endpointsByElement[e];
                if (endpoints) {
                    var newEndpoints = [];
                    for (var i = 0, j = endpoints.length; i < j; i++) {
                        if (endpoints[i] !== endpoint) {
                            newEndpoints.push(endpoints[i]);
                        }
                    }

                    endpointsByElement[e] = newEndpoints;
                }
                if (endpointsByElement[e].length < 1) {
                    delete endpointsByElement[e];
                }
            }
        };

        var IS_DETACH_ALLOWED = "isDetachAllowed";
        var BEFORE_DETACH = "beforeDetach";
        var CHECK_CONDITION = "checkCondition";

        /**
         * Deletes a Connection.
         * @method deleteConnection
         * @param connection Connection to delete
         * @param {Object} [params] Optional delete parameters
         * @param {Boolean} [params.doNotFireEvent=false] If true, a connection detached event will not be fired. Otherwise one will.
         * @param {Boolean} [params.force=false] If true, the connection will be deleted even if a beforeDetach interceptor tries to stop the deletion.
         * @returns {Boolean} True if the connection was deleted, false otherwise.
         */
        this.deleteConnection = function(connection, params) {

            if (connection != null) {
                params = params || {};

                if (params.force || _ju.functionChain(true, false, [
                    [ connection.endpoints[0], IS_DETACH_ALLOWED, [ connection ] ],
                    [ connection.endpoints[1], IS_DETACH_ALLOWED, [ connection ] ],
                    [ connection, IS_DETACH_ALLOWED, [ connection ] ],
                    [ _currentInstance, CHECK_CONDITION, [ BEFORE_DETACH, connection ] ]
                ])) {

                    connection.setHover(false);
                    fireDetachEvent(connection, !connection.pending && params.fireEvent !== false, params.originalEvent);

                    connection.endpoints[0].detachFromConnection(connection);
                    connection.endpoints[1].detachFromConnection(connection);
                    _ju.removeWithFunction(connections, function (_c) {
                        return connection.id === _c.id;
                    });

                    connection.cleanup();
                    connection.destroy();
                    return true;
                }
            }
            return false;
        };

        /**
         * Remove all Connections from all elements, but leaves Endpoints in place ((unless a connection is set to auto delete its Endpoints).
         * @method deleteEveryConnection
         * @param {Object} [params] optional params object for the call
         * @param {Boolean} [params.fireEvent=true] Whether or not to fire detach events
         * @param {Boolean} [params.forceDetach=false] If true, this call will ignore any `beforeDetach` interceptors.
         * @returns {Number} The number of connections that were deleted.
         */
        this.deleteEveryConnection = function (params) {
            params = params || {};
            var count = connections.length, deletedCount = 0;
            _currentInstance.batch(function () {
                for (var i = 0; i < count; i++) {
                    deletedCount += _currentInstance.deleteConnection(connections[0], params) ? 1 : 0;
                }
            });
            return deletedCount;
        };

        /**
         * Removes all an element's Connections.
         * @method deleteConnectionsForElement
         * @param {Object} el Either the id of the element, or a selector for the element.
         * @param {Object} [params] Optional parameters.
         * @param {Boolean} [params.fireEvent=true] Whether or not to fire the detach event.
         * @param {Boolean} [params.forceDetach=false] If true, this call will ignore any `beforeDetach` interceptors.
         * @return {jsPlumbInstance} The current jsPlumb instance.
         */
        this.deleteConnectionsForElement = function (el, params) {
            params = params || {};
            el = _currentInstance.getElement(el);
            var id = _getId(el), endpoints = endpointsByElement[id];
            if (endpoints && endpoints.length) {
                for (var i = 0, j = endpoints.length; i < j; i++) {
                    endpoints[i].deleteEveryConnection(params);
                }
            }
            return _currentInstance;
        };

        /// not public.  but of course its exposed. how to change this.
        this.deleteObject = function (params) {
            var result = {
                    endpoints: {},
                    connections: {},
                    endpointCount: 0,
                    connectionCount: 0
                },
                deleteAttachedObjects = params.deleteAttachedObjects !== false;

            var unravelConnection = function (connection) {
                if (connection != null && result.connections[connection.id] == null) {
                    if (!params.dontUpdateHover && connection._jsPlumb != null) {
                        connection.setHover(false);
                    }
                    result.connections[connection.id] = connection;
                    result.connectionCount++;
                }
            };
            var unravelEndpoint = function (endpoint) {
                if (endpoint != null && result.endpoints[endpoint.id] == null) {
                    if (!params.dontUpdateHover && endpoint._jsPlumb != null) {
                        endpoint.setHover(false);
                    }
                    result.endpoints[endpoint.id] = endpoint;
                    result.endpointCount++;

                    if (deleteAttachedObjects) {
                        for (var i = 0; i < endpoint.connections.length; i++) {
                            var c = endpoint.connections[i];
                            unravelConnection(c);
                        }
                    }
                }
            };

            if (params.connection) {
                unravelConnection(params.connection);
            }
            else {
                unravelEndpoint(params.endpoint);
            }

            // loop through connections
            for (var i in result.connections) {
                var c = result.connections[i];
                if (c._jsPlumb) {
                    _ju.removeWithFunction(connections, function (_c) {
                        return c.id === _c.id;
                    });

                    fireDetachEvent(c, params.fireEvent === false ? false : !c.pending, params.originalEvent);
                    var doNotCleanup = params.deleteAttachedObjects == null ? null : !params.deleteAttachedObjects;

                    c.endpoints[0].detachFromConnection(c, null, doNotCleanup);
                    c.endpoints[1].detachFromConnection(c, null, doNotCleanup);

                    c.cleanup(true);
                    c.destroy(true);
                }
            }

            // loop through endpoints
            for (var j in result.endpoints) {
                var e = result.endpoints[j];
                if (e._jsPlumb) {
                    _currentInstance.unregisterEndpoint(e);
                    // FIRE some endpoint deleted event?
                    e.cleanup(true);
                    e.destroy(true);
                }
            }

            return result;
        };

        this.draggable = function (el, options) {
            var info;
            _each(function(_el) {
                 info = _info(_el);
                if (info.el) {
                    _initDraggableIfNecessary(info.el, true, options, info.id, true);
                }
            }, el);
            return _currentInstance;
        };

        this.droppable = function(el, options) {
            var info;
            options = options || {};
            options.allowLoopback = false;
            _each(function(_el) {
                info = _info(_el);
                if (info.el) {
                    _currentInstance.initDroppable(info.el, options);
                }
            }, el);
            return _currentInstance;
        };

        // helpers for select/selectEndpoints
        var _setOperation = function (list, func, args, selector) {
                for (var i = 0, j = list.length; i < j; i++) {
                    list[i][func].apply(list[i], args);
                }
                return selector(list);
            },
            _getOperation = function (list, func, args) {
                var out = [];
                for (var i = 0, j = list.length; i < j; i++) {
                    out.push([ list[i][func].apply(list[i], args), list[i] ]);
                }
                return out;
            },
            setter = function (list, func, selector) {
                return function () {
                    return _setOperation(list, func, arguments, selector);
                };
            },
            getter = function (list, func) {
                return function () {
                    return _getOperation(list, func, arguments);
                };
            },
            prepareList = function (input, doNotGetIds) {
                var r = [];
                if (input) {
                    if (typeof input === 'string') {
                        if (input === "*") {
                            return input;
                        }
                        r.push(input);
                    }
                    else {
                        if (doNotGetIds) {
                            r = input;
                        }
                        else {
                            if (input.length) {
                                for (var i = 0, j = input.length; i < j; i++) {
                                    r.push(_info(input[i]).id);
                                }
                            }
                            else {
                                r.push(_info(input).id);
                            }
                        }
                    }
                }
                return r;
            },
            filterList = function (list, value, missingIsFalse) {
                if (list === "*") {
                    return true;
                }
                return list.length > 0 ? list.indexOf(value) !== -1 : !missingIsFalse;
            };

        // get some connections, specifying source/target/scope
        this.getConnections = function (options, flat) {
            if (!options) {
                options = {};
            } else if (options.constructor === String) {
                options = { "scope": options };
            }
            var scope = options.scope || _currentInstance.getDefaultScope(),
                scopes = prepareList(scope, true),
                sources = prepareList(options.source),
                targets = prepareList(options.target),
                results = (!flat && scopes.length > 1) ? {} : [],
                _addOne = function (scope, obj) {
                    if (!flat && scopes.length > 1) {
                        var ss = results[scope];
                        if (ss == null) {
                            ss = results[scope] = [];
                        }
                        ss.push(obj);
                    } else {
                        results.push(obj);
                    }
                };

            for (var j = 0, jj = connections.length; j < jj; j++) {
                var c = connections[j],
                    sourceId = c.proxies && c.proxies[0] ? c.proxies[0].originalEp.elementId : c.sourceId,
                    targetId = c.proxies && c.proxies[1] ? c.proxies[1].originalEp.elementId : c.targetId;

                if (filterList(scopes, c.scope) && filterList(sources, sourceId) && filterList(targets, targetId)) {
                    _addOne(c.scope, c);
                }
            }

            return results;
        };

        var _curryEach = function (list, executor) {
                return function (f) {
                    for (var i = 0, ii = list.length; i < ii; i++) {
                        f(list[i]);
                    }
                    return executor(list);
                };
            },
            _curryGet = function (list) {
                return function (idx) {
                    return list[idx];
                };
            };

        var _makeCommonSelectHandler = function (list, executor) {
            var out = {
                    length: list.length,
                    each: _curryEach(list, executor),
                    get: _curryGet(list)
                },
                setters = ["setHover", "removeAllOverlays", "setLabel", "addClass", "addOverlay", "removeOverlay",
                    "removeOverlays", "showOverlay", "hideOverlay", "showOverlays", "hideOverlays", "setPaintStyle",
                    "setHoverPaintStyle", "setSuspendEvents", "setParameter", "setParameters", "setVisible",
                    "repaint", "addType", "toggleType", "removeType", "removeClass", "setType", "bind", "unbind" ],

                getters = ["getLabel", "getOverlay", "isHover", "getParameter", "getParameters", "getPaintStyle",
                    "getHoverPaintStyle", "isVisible", "hasType", "getType", "isSuspendEvents" ],
                i, ii;

            for (i = 0, ii = setters.length; i < ii; i++) {
                out[setters[i]] = setter(list, setters[i], executor);
            }

            for (i = 0, ii = getters.length; i < ii; i++) {
                out[getters[i]] = getter(list, getters[i]);
            }

            return out;
        };

        var _makeConnectionSelectHandler = function (list) {
            var common = _makeCommonSelectHandler(list, _makeConnectionSelectHandler);
            return jsPlumb.extend(common, {
                // setters
                setDetachable: setter(list, "setDetachable", _makeConnectionSelectHandler),
                setReattach: setter(list, "setReattach", _makeConnectionSelectHandler),
                setConnector: setter(list, "setConnector", _makeConnectionSelectHandler),
                delete: function () {
                    for (var i = 0, ii = list.length; i < ii; i++) {
                        _currentInstance.deleteConnection(list[i]);
                    }
                },
                // getters
                isDetachable: getter(list, "isDetachable"),
                isReattach: getter(list, "isReattach")
            });
        };

        var _makeEndpointSelectHandler = function (list) {
            var common = _makeCommonSelectHandler(list, _makeEndpointSelectHandler);
            return jsPlumb.extend(common, {
                setEnabled: setter(list, "setEnabled", _makeEndpointSelectHandler),
                setAnchor: setter(list, "setAnchor", _makeEndpointSelectHandler),
                isEnabled: getter(list, "isEnabled"),
                deleteEveryConnection: function () {
                    for (var i = 0, ii = list.length; i < ii; i++) {
                        list[i].deleteEveryConnection();
                    }
                },
                "delete": function () {
                    for (var i = 0, ii = list.length; i < ii; i++) {
                        _currentInstance.deleteEndpoint(list[i]);
                    }
                }
            });
        };

        this.select = function (params) {
            params = params || {};
            params.scope = params.scope || "*";
            return _makeConnectionSelectHandler(params.connections || _currentInstance.getConnections(params, true));
        };

        this.selectEndpoints = function (params) {
            params = params || {};
            params.scope = params.scope || "*";
            var noElementFilters = !params.element && !params.source && !params.target,
                elements = noElementFilters ? "*" : prepareList(params.element),
                sources = noElementFilters ? "*" : prepareList(params.source),
                targets = noElementFilters ? "*" : prepareList(params.target),
                scopes = prepareList(params.scope, true);

            var ep = [];

            for (var el in endpointsByElement) {
                var either = filterList(elements, el, true),
                    source = filterList(sources, el, true),
                    sourceMatchExact = sources !== "*",
                    target = filterList(targets, el, true),
                    targetMatchExact = targets !== "*";

                // if they requested 'either' then just match scope. otherwise if they requested 'source' (not as a wildcard) then we have to match only endpoints that have isSource set to to true, and the same thing with isTarget.
                if (either || source || target) {
                    inner:
                        for (var i = 0, ii = endpointsByElement[el].length; i < ii; i++) {
                            var _ep = endpointsByElement[el][i];
                            if (filterList(scopes, _ep.scope, true)) {

                                var noMatchSource = (sourceMatchExact && sources.length > 0 && !_ep.isSource),
                                    noMatchTarget = (targetMatchExact && targets.length > 0 && !_ep.isTarget);

                                if (noMatchSource || noMatchTarget) {
                                    continue inner;
                                }

                                ep.push(_ep);
                            }
                        }
                }
            }

            return _makeEndpointSelectHandler(ep);
        };

        // get all connections managed by the instance of jsplumb.
        this.getAllConnections = function () {
            return connections;
        };
        this.getDefaultScope = function () {
            return DEFAULT_SCOPE;
        };
        // get an endpoint by uuid.
        this.getEndpoint = _getEndpoint;
        /**
         * Gets the list of Endpoints for a given element.
         * @method getEndpoints
         * @param {String|Element|Selector} el The element to get endpoints for.
         * @return {Endpoint[]} An array of Endpoints for the specified element.
         */
        this.getEndpoints = function (el) {
            return endpointsByElement[_info(el).id] || [];
        };
        // gets the default endpoint type. used when subclassing. see wiki.
        this.getDefaultEndpointType = function () {
            return jsPlumb.Endpoint;
        };
        // gets the default connection type. used when subclassing.  see wiki.
        this.getDefaultConnectionType = function () {
            return jsPlumb.Connection;
        };
        /*
         * Gets an element's id, creating one if necessary. really only exposed
         * for the lib-specific functionality to access; would be better to pass
         * the current instance into the lib-specific code (even though this is
         * a static call. i just don't want to expose it to the public API).
         */
        this.getId = _getId;

        this.appendElement = _appendElement;

        var _hoverSuspended = false;
        this.isHoverSuspended = function () {
            return _hoverSuspended;
        };
        this.setHoverSuspended = function (s) {
            _hoverSuspended = s;
        };

        // set an element's connections to be hidden
        this.hide = function (el, changeEndpoints) {
            _setVisible(el, "none", changeEndpoints);
            return _currentInstance;
        };

        // exposed for other objects to use to get a unique id.
        this.idstamp = _idstamp;

        // this.connectorsInitialized = false;
        // this.registerConnectorType = function (connector, name) {
        //     connectorTypes.push([connector, name]);
        // };

        // ensure that, if the current container exists, it is a DOM element and not a selector.
        // if it does not exist and `candidate` is supplied, the offset parent of that element will be set as the Container.
        // this is used to do a better default behaviour for the case that the user has not set a container:
        // addEndpoint, makeSource, makeTarget and connect all call this method with the offsetParent of the
        // element in question (for connect it is the source element). So if no container is set, it is inferred
        // to be the offsetParent of the first element the user tries to connect.
        var _ensureContainer = function (candidate) {
            if (!_container && candidate) {
                var can = _currentInstance.getElement(candidate);
                if (can.offsetParent) {
                    _currentInstance.setContainer(can.offsetParent);
                }
            }
        };

        var _getContainerFromDefaults = function () {
            if (_currentInstance.Defaults.Container) {
                _currentInstance.setContainer(_currentInstance.Defaults.Container);
            }
        };

        // check if a given element is managed or not. if not, add to our map. if drawing is not suspended then
        // we'll also stash its dimensions; otherwise we'll do this in a lazy way through updateOffset.
        var _manage = _currentInstance.manage = function (id, element, _transient) {
            if (!managedElements[id]) {
                managedElements[id] = {
                    el: element,
                    endpoints: [],
                    connections: []
                };

                managedElements[id].info = _updateOffset({ elId: id, timestamp: _suspendedAt });
                if (!_transient) {
                    _currentInstance.fire("manageElement", { id:id, info:managedElements[id].info, el:element });
                }
            }

            return managedElements[id];
        };

        var _unmanage = function(id) {
            if (managedElements[id]) {
                delete managedElements[id];
                _currentInstance.fire("unmanageElement", id);
            }
        };

        /**
         * updates the offset and size for a given element, and stores the
         * values. if 'offset' is not null we use that (it would have been
         * passed in from a drag call) because it's faster; but if it is null,
         * or if 'recalc' is true in order to force a recalculation, we get the current values.
         */
        var _updateOffset = this.updateOffset = function (params) {

            var timestamp = params.timestamp, recalc = params.recalc, offset = params.offset, elId = params.elId, s;
            if (_suspendDrawing && !timestamp) {
                timestamp = _suspendedAt;
            }
            if (!recalc) {
                if (timestamp && timestamp === offsetTimestamps[elId]) {
                    return {o: params.offset || offsets[elId], s: sizes[elId]};
                }
            }
            if (recalc || (!offset && offsets[elId] == null)) { // if forced repaint or no offset available, we recalculate.

                // get the current size and offset, and store them
                s = managedElements[elId] ? managedElements[elId].el : null;
                if (s != null) {
                    sizes[elId] = _currentInstance.getSize(s);
                    offsets[elId] = _currentInstance.getOffset(s);
                    offsetTimestamps[elId] = timestamp;
                }
            } else {
                offsets[elId] = offset || offsets[elId];
                if (sizes[elId] == null) {
                    s = managedElements[elId].el;
                    if (s != null) {
                        sizes[elId] = _currentInstance.getSize(s);
                    }
                }
                offsetTimestamps[elId] = timestamp;
            }

            if (offsets[elId] && !offsets[elId].right) {
                offsets[elId].right = offsets[elId].left + sizes[elId][0];
                offsets[elId].bottom = offsets[elId].top + sizes[elId][1];
                offsets[elId].width = sizes[elId][0];
                offsets[elId].height = sizes[elId][1];
                offsets[elId].centerx = offsets[elId].left + (offsets[elId].width / 2);
                offsets[elId].centery = offsets[elId].top + (offsets[elId].height / 2);
            }

            return {o: offsets[elId], s: sizes[elId]};
        };

        /**
         * callback from the current library to tell us to prepare ourselves (attach
         * mouse listeners etc; can't do that until the library has provided a bind method)
         */
        this.init = function () {
            if (!initialized) {
                _getContainerFromDefaults();
                _currentInstance.anchorManager = new root.jsPlumb.AnchorManager({jsPlumbInstance: _currentInstance});
                initialized = true;
                _currentInstance.fire("ready", _currentInstance);
            }
        }.bind(this);

        this.log = log;
        this.jsPlumbUIComponent = jsPlumbUIComponent;

        /*
         * Creates an anchor with the given params.
         *
         *
         * Returns: The newly created Anchor.
         * Throws: an error if a named anchor was not found.
         */
        this.makeAnchor = function () {
            var pp, _a = function (t, p) {
                if (root.jsPlumb.Anchors[t]) {
                    return new root.jsPlumb.Anchors[t](p);
                }
                if (!_currentInstance.Defaults.DoNotThrowErrors) {
                    throw { msg: "jsPlumb: unknown anchor type '" + t + "'" };
                }
            };
            if (arguments.length === 0) {
                return null;
            }
            var specimen = arguments[0], elementId = arguments[1], jsPlumbInstance = arguments[2], newAnchor = null;
            // if it appears to be an anchor already...
            if (specimen.compute && specimen.getOrientation) {
                return specimen;
            }  //TODO hazy here about whether it should be added or is already added somehow.
            // is it the name of an anchor type?
            else if (typeof specimen === "string") {
                newAnchor = _a(arguments[0], {elementId: elementId, jsPlumbInstance: _currentInstance});
            }
            // is it an array? it will be one of:
            // an array of [spec, params] - this defines a single anchor, which may be dynamic, but has parameters.
            // an array of arrays - this defines some dynamic anchors
            // an array of numbers - this defines a single anchor.
            else if (_ju.isArray(specimen)) {
                if (_ju.isArray(specimen[0]) || _ju.isString(specimen[0])) {
                    // if [spec, params] format
                    if (specimen.length === 2 && _ju.isObject(specimen[1])) {
                        // if first arg is a string, its a named anchor with params
                        if (_ju.isString(specimen[0])) {
                            pp = root.jsPlumb.extend({elementId: elementId, jsPlumbInstance: _currentInstance}, specimen[1]);
                            newAnchor = _a(specimen[0], pp);
                        }
                        // otherwise first arg is array, second is params. we treat as a dynamic anchor, which is fine
                        // even if the first arg has only one entry. you could argue all anchors should be implicitly dynamic in fact.
                        else {
                            pp = root.jsPlumb.extend({elementId: elementId, jsPlumbInstance: _currentInstance, anchors: specimen[0]}, specimen[1]);
                            newAnchor = new root.jsPlumb.DynamicAnchor(pp);
                        }
                    }
                    else {
                        newAnchor = new jsPlumb.DynamicAnchor({anchors: specimen, selector: null, elementId: elementId, jsPlumbInstance: _currentInstance});
                    }

                }
                else {
                    var anchorParams = {
                        x: specimen[0], y: specimen[1],
                        orientation: (specimen.length >= 4) ? [ specimen[2], specimen[3] ] : [0, 0],
                        offsets: (specimen.length >= 6) ? [ specimen[4], specimen[5] ] : [ 0, 0 ],
                        elementId: elementId,
                        jsPlumbInstance: _currentInstance,
                        cssClass: specimen.length === 7 ? specimen[6] : null
                    };
                    newAnchor = new root.jsPlumb.Anchor(anchorParams);
                    newAnchor.clone = function () {
                        return new root.jsPlumb.Anchor(anchorParams);
                    };
                }
            }

            if (!newAnchor.id) {
                newAnchor.id = "anchor_" + _idstamp();
            }
            return newAnchor;
        };

        /**
         * makes a list of anchors from the given list of types or coords, eg
         * ["TopCenter", "RightMiddle", "BottomCenter", [0, 1, -1, -1] ]
         */
        this.makeAnchors = function (types, elementId, jsPlumbInstance) {
            var r = [];
            for (var i = 0, ii = types.length; i < ii; i++) {
                if (typeof types[i] === "string") {
                    r.push(root.jsPlumb.Anchors[types[i]]({elementId: elementId, jsPlumbInstance: jsPlumbInstance}));
                }
                else if (_ju.isArray(types[i])) {
                    r.push(_currentInstance.makeAnchor(types[i], elementId, jsPlumbInstance));
                }
            }
            return r;
        };

        /**
         * Makes a dynamic anchor from the given list of anchors (which may be in shorthand notation as strings or dimension arrays, or Anchor
         * objects themselves) and the given, optional, anchorSelector function (jsPlumb uses a default if this is not provided; most people will
         * not need to provide this - i think).
         */
        this.makeDynamicAnchor = function (anchors, anchorSelector) {
            return new root.jsPlumb.DynamicAnchor({anchors: anchors, selector: anchorSelector, elementId: null, jsPlumbInstance: _currentInstance});
        };

// --------------------- makeSource/makeTarget ---------------------------------------------- 

        this.targetEndpointDefinitions = {};
        this.sourceEndpointDefinitions = {};

        var selectorFilter = function (evt, _el, selector, _instance, negate) {
            var t = evt.target || evt.srcElement, ok = false,
                sel = _instance.getSelector(_el, selector);
            for (var j = 0; j < sel.length; j++) {
                if (sel[j] === t) {
                    ok = true;
                    break;
                }
            }
            return negate ? !ok : ok;
        };

        var _makeElementDropHandler = function (elInfo, p, dropOptions, isSource, isTarget) {
            var proxyComponent = new jsPlumbUIComponent(p);
            var _drop = p._jsPlumb.EndpointDropHandler({
                jsPlumb: _currentInstance,
                enabled: function () {
                    return elInfo.def.enabled;
                },
                isFull: function () {
                    var targetCount = _currentInstance.select({target: elInfo.id}).length;
                    return elInfo.def.maxConnections > 0 && targetCount >= elInfo.def.maxConnections;
                },
                element: elInfo.el,
                elementId: elInfo.id,
                isSource: isSource,
                isTarget: isTarget,
                addClass: function (clazz) {
                    _currentInstance.addClass(elInfo.el, clazz);
                },
                removeClass: function (clazz) {
                    _currentInstance.removeClass(elInfo.el, clazz);
                },
                onDrop: function (jpc) {
                    var source = jpc.endpoints[0];
                    source.anchor.locked = false;
                },
                isDropAllowed: function () {
                    return proxyComponent.isDropAllowed.apply(proxyComponent, arguments);
                },
                isRedrop:function(jpc) {
                    return (jpc.suspendedElement != null && jpc.suspendedEndpoint != null && jpc.suspendedEndpoint.element === elInfo.el);
                },
                getEndpoint: function (jpc) {

                    // make a new Endpoint for the target, or get it from the cache if uniqueEndpoint
                    // is set. if its a redrop the new endpoint will be immediately cleaned up.

                    var newEndpoint = elInfo.def.endpoint;

                    // if no cached endpoint, or there was one but it has been cleaned up
                    // (ie. detached), create a new one
                    if (newEndpoint == null || newEndpoint._jsPlumb == null) {
                        var eps = _currentInstance.deriveEndpointAndAnchorSpec(jpc.getType().join(" "), true);
                        var pp = eps.endpoints ? root.jsPlumb.extend(p, {
                            endpoint:elInfo.def.def.endpoint || eps.endpoints[1]
                        }) :p;
                        if (eps.anchors) {
                            pp = root.jsPlumb.extend(pp, {
                                anchor:elInfo.def.def.anchor || eps.anchors[1]
                            });
                        }
                        newEndpoint = _currentInstance.addEndpoint(elInfo.el, pp);
                        newEndpoint._mtNew = true;
                    }

                    if (p.uniqueEndpoint) {
                        elInfo.def.endpoint = newEndpoint;
                    }

                    newEndpoint.setDeleteOnEmpty(true);

                    // if connection is detachable, init the new endpoint to be draggable, to support that happening.
                    if (jpc.isDetachable()) {
                        newEndpoint.initDraggable();
                    }

                    // if the anchor has a 'positionFinder' set, then delegate to that function to find
                    // out where to locate the anchor.
                    if (newEndpoint.anchor.positionFinder != null) {
                        var dropPosition = _currentInstance.getUIPosition(arguments, _currentInstance.getZoom()),
                            elPosition = _currentInstance.getOffset(elInfo.el),
                            elSize = _currentInstance.getSize(elInfo.el),
                            ap = dropPosition == null ? [0,0] : newEndpoint.anchor.positionFinder(dropPosition, elPosition, elSize, newEndpoint.anchor.constructorParams);

                        newEndpoint.anchor.x = ap[0];
                        newEndpoint.anchor.y = ap[1];
                        // now figure an orientation for it..kind of hard to know what to do actually. probably the best thing i can do is to
                        // support specifying an orientation in the anchor's spec. if one is not supplied then i will make the orientation
                        // be what will cause the most natural link to the source: it will be pointing at the source, but it needs to be
                        // specified in one axis only, and so how to make that choice? i think i will use whichever axis is the one in which
                        // the target is furthest away from the source.
                    }

                    return newEndpoint;
                },
                maybeCleanup: function (ep) {
                    if (ep._mtNew && ep.connections.length === 0) {
                        _currentInstance.deleteObject({endpoint: ep});
                    }
                    else {
                        delete ep._mtNew;
                    }
                }
            });

            // wrap drop events as needed and initialise droppable
            var dropEvent = root.jsPlumb.dragEvents.drop;
            dropOptions.scope = dropOptions.scope || (p.scope || _currentInstance.Defaults.Scope);
            dropOptions[dropEvent] = _ju.wrap(dropOptions[dropEvent], _drop, true);

            // if target, return true from the over event. this will cause katavorio to stop setting drops to hover
            // if multipleDrop is set to false.
            if (isTarget) {
                dropOptions[root.jsPlumb.dragEvents.over] = function () { return true; };
            }

            // vanilla jsplumb only
            if (p.allowLoopback === false) {
                dropOptions.canDrop = function (_drag) {
                    var de = _drag.getDragElement()._jsPlumbRelatedElement;
                    return de !== elInfo.el;
                };
            }
            _currentInstance.initDroppable(elInfo.el, dropOptions, "internal");

            return _drop;

        };

        // see API docs
        this.makeTarget = function (el, params, referenceParams) {

            // put jsplumb ref into params without altering the params passed in
            var p = root.jsPlumb.extend({_jsPlumb: this}, referenceParams);
            root.jsPlumb.extend(p, params);

            var maxConnections = p.maxConnections || -1,

                _doOne = function (el) {

                    // get the element's id and store the endpoint definition for it.  jsPlumb.connect calls will look for one of these,
                    // and use the endpoint definition if found.
                    // decode the info for this element (id and element)
                    var elInfo = _info(el),
                        elid = elInfo.id,
                        dropOptions = root.jsPlumb.extend({}, p.dropOptions || {}),
                        type = p.connectionType || "default";

                    this.targetEndpointDefinitions[elid] = this.targetEndpointDefinitions[elid] || {};

                    _ensureContainer(elid);

                    // if this is a group and the user has not mandated a rank, set to -1 so that Nodes takes
                    // precedence.
                    if (elInfo.el._isJsPlumbGroup && dropOptions.rank == null) {
                        dropOptions.rank = -1;
                    }

                    // store the definition
                    var _def = {
                        def: root.jsPlumb.extend({}, p),
                        uniqueEndpoint: p.uniqueEndpoint,
                        maxConnections: maxConnections,
                        enabled: true
                    };

                    if (p.createEndpoint) {
                        _def.uniqueEndpoint = true;
                        _def.endpoint = _currentInstance.addEndpoint(el, _def.def);
                        _def.endpoint.setDeleteOnEmpty(false);
                    }

                    elInfo.def = _def;
                    this.targetEndpointDefinitions[elid][type] = _def;
                    _makeElementDropHandler(elInfo, p, dropOptions, p.isSource === true, true);
                    // stash the definition on the drop
                    elInfo.el._katavorioDrop[elInfo.el._katavorioDrop.length - 1].targetDef = _def;

                }.bind(this);

            // make an array if only given one element
            var inputs = el.length && el.constructor !== String ? el : [ el ];

            // register each one in the list.
            for (var i = 0, ii = inputs.length; i < ii; i++) {
                _doOne(inputs[i]);
            }

            return this;
        };

        // see api docs
        this.unmakeTarget = function (el, doNotClearArrays) {
            var info = _info(el);
            _currentInstance.destroyDroppable(info.el, "internal");
            if (!doNotClearArrays) {
                delete this.targetEndpointDefinitions[info.id];
            }

            return this;
        };

        // see api docs
        this.makeSource = function (el, params, referenceParams) {
            var p = root.jsPlumb.extend({_jsPlumb: this}, referenceParams);
            root.jsPlumb.extend(p, params);
            var type = p.connectionType || "default";
            var aae = _currentInstance.deriveEndpointAndAnchorSpec(type);
            p.endpoint = p.endpoint || aae.endpoints[0];
            p.anchor = p.anchor || aae.anchors[0];
            var maxConnections = p.maxConnections || -1,
                onMaxConnections = p.onMaxConnections,
                _doOne = function (elInfo) {
                    // get the element's id and store the endpoint definition for it.  jsPlumb.connect calls will look for one of these,
                    // and use the endpoint definition if found.
                    var elid = elInfo.id,
                        _del = this.getElement(elInfo.el);

                    this.sourceEndpointDefinitions[elid] = this.sourceEndpointDefinitions[elid] || {};
                    _ensureContainer(elid);

                    var _def = {
                        def:root.jsPlumb.extend({}, p),
                        uniqueEndpoint: p.uniqueEndpoint,
                        maxConnections: maxConnections,
                        enabled: true
                    };

                    if (p.createEndpoint) {
                        _def.uniqueEndpoint = true;
                        _def.endpoint = _currentInstance.addEndpoint(el, _def.def);
                        _def.endpoint.setDeleteOnEmpty(false);
                    }

                    this.sourceEndpointDefinitions[elid][type] = _def;
                    elInfo.def = _def;

                    var stopEvent = root.jsPlumb.dragEvents.stop,
                        dragEvent = root.jsPlumb.dragEvents.drag,
                        dragOptions = root.jsPlumb.extend({ }, p.dragOptions || {}),
                        existingDrag = dragOptions.drag,
                        existingStop = dragOptions.stop,
                        ep = null,
                        endpointAddedButNoDragYet = false;

                    // set scope if its not set in dragOptions but was passed in in params
                    dragOptions.scope = dragOptions.scope || p.scope;

                    dragOptions[dragEvent] = _ju.wrap(dragOptions[dragEvent], function () {
                        if (existingDrag) {
                            existingDrag.apply(this, arguments);
                        }
                        endpointAddedButNoDragYet = false;
                    });

                    dragOptions[stopEvent] = _ju.wrap(dragOptions[stopEvent], function () {

                        if (existingStop) {
                            existingStop.apply(this, arguments);
                        }
                        this.currentlyDragging = false;
                        if (ep._jsPlumb != null) { // if not cleaned up...

                            // reset the anchor to the anchor that was initially provided. the one we were using to drag
                            // the connection was just a placeholder that was located at the place the user pressed the
                            // mouse button to initiate the drag.
                            var anchorDef = p.anchor || this.Defaults.Anchor,
                                oldAnchor = ep.anchor,
                                oldConnection = ep.connections[0];

                            var    newAnchor = this.makeAnchor(anchorDef, elid, this),
                                _el = ep.element;

                            // if the anchor has a 'positionFinder' set, then delegate to that function to find
                            // out where to locate the anchor. issue 117.
                            if (newAnchor.positionFinder != null) {
                                var elPosition = _currentInstance.getOffset(_el),
                                    elSize = this.getSize(_el),
                                    dropPosition = { left: elPosition.left + (oldAnchor.x * elSize[0]), top: elPosition.top + (oldAnchor.y * elSize[1]) },
                                    ap = newAnchor.positionFinder(dropPosition, elPosition, elSize, newAnchor.constructorParams);

                                newAnchor.x = ap[0];
                                newAnchor.y = ap[1];
                            }

                            ep.setAnchor(newAnchor, true);
                            ep.repaint();
                            this.repaint(ep.elementId);
                            if (oldConnection != null) {
                                this.repaint(oldConnection.targetId);
                            }
                        }
                    }.bind(this));

                    // when the user presses the mouse, add an Endpoint, if we are enabled.
                    var mouseDownListener = function (e) {
                        // on right mouse button, abort.
                        if (e.which === 3 || e.button === 2) {
                            return;
                        }

                        // TODO store def on element.
                        var def = this.sourceEndpointDefinitions[elid][type];

                        // if disabled, return.
                        if (!def.enabled) {
                            return;
                        }

                        elid = this.getId(this.getElement(elInfo.el)); // elid might have changed since this method was called to configure the element.

                        // if a filter was given, run it, and return if it says no.
                        if (p.filter) {
                            var r = _ju.isString(p.filter) ? selectorFilter(e, elInfo.el, p.filter, this, p.filterExclude) : p.filter(e, elInfo.el);
                            if (r === false) {
                                return;
                            }
                        }

                        // if maxConnections reached
                        var sourceCount = this.select({source: elid}).length;
                        if (def.maxConnections >= 0 && (sourceCount >= def.maxConnections)) {
                            if (onMaxConnections) {
                                onMaxConnections({
                                    element: elInfo.el,
                                    maxConnections: maxConnections
                                }, e);
                            }
                            return false;
                        }

                        // find the position on the element at which the mouse was pressed; this is where the endpoint
                        // will be located.
                        var elxy = root.jsPlumb.getPositionOnElement(e, _del, _zoom);

                        // we need to override the anchor in here, and force 'isSource', but we don't want to mess with
                        // the params passed in, because after a connection is established we're going to reset the endpoint
                        // to have the anchor we were given.
                        var tempEndpointParams = {};
                        root.jsPlumb.extend(tempEndpointParams, p);
                        tempEndpointParams.isTemporarySource = true;
                        tempEndpointParams.anchor = [ elxy[0], elxy[1] , 0, 0];
                        tempEndpointParams.dragOptions = dragOptions;

                        if (def.def.scope) {
                            tempEndpointParams.scope = def.def.scope;
                        }

                        ep = this.addEndpoint(elid, tempEndpointParams);
                        endpointAddedButNoDragYet = true;
                        ep.setDeleteOnEmpty(true);

                        // if unique endpoint and it's already been created, push it onto the endpoint we create. at the end
                        // of a successful connection we'll switch to that endpoint.
                        // TODO this is the same code as the programmatic endpoints create on line 1050 ish
                        if (def.uniqueEndpoint) {
                            if (!def.endpoint) {
                                def.endpoint = ep;
                                ep.setDeleteOnEmpty(false);
                            }
                            else {
                                ep.finalEndpoint = def.endpoint;
                            }
                        }

                        var _delTempEndpoint = function () {
                            // this mouseup event is fired only if no dragging occurred, by jquery and yui, but for mootools
                            // it is fired even if dragging has occurred, in which case we would blow away a perfectly
                            // legitimate endpoint, were it not for this check.  the flag is set after adding an
                            // endpoint and cleared in a drag listener we set in the dragOptions above.
                            _currentInstance.off(ep.canvas, "mouseup", _delTempEndpoint);
                            _currentInstance.off(elInfo.el, "mouseup", _delTempEndpoint);
                            if (endpointAddedButNoDragYet) {
                                endpointAddedButNoDragYet = false;
                                _currentInstance.deleteEndpoint(ep);
                            }
                        };

                        _currentInstance.on(ep.canvas, "mouseup", _delTempEndpoint);
                        _currentInstance.on(elInfo.el, "mouseup", _delTempEndpoint);

                        // optionally check for attributes to extract from the source element
                        var payload = {};
                        if (def.def.extract) {
                            for (var att in def.def.extract) {
                                var v = (e.srcElement || e.target).getAttribute(att);
                                if (v) {
                                    payload[def.def.extract[att]] = v;
                                }
                            }
                        }

                        // and then trigger its mousedown event, which will kick off a drag, which will start dragging
                        // a new connection from this endpoint.
                        _currentInstance.trigger(ep.canvas, "mousedown", e, payload);

                        _ju.consume(e);

                    }.bind(this);

                    this.on(elInfo.el, "mousedown", mouseDownListener);
                    _def.trigger = mouseDownListener;

                    // if a filter was provided, set it as a dragFilter on the element,
                    // to prevent the element drag function from kicking in when we want to
                    // drag a new connection
                    if (p.filter && (_ju.isString(p.filter) || _ju.isFunction(p.filter))) {
                        _currentInstance.setDragFilter(elInfo.el, p.filter);
                    }

                    var dropOptions = root.jsPlumb.extend({}, p.dropOptions || {});

                    _makeElementDropHandler(elInfo, p, dropOptions, true, p.isTarget === true);

                }.bind(this);

            var inputs = el.length && el.constructor !== String ? el : [ el ];
            for (var i = 0, ii = inputs.length; i < ii; i++) {
                _doOne(_info(inputs[i]));
            }

            return this;
        };

        // see api docs
        this.unmakeSource = function (el, connectionType, doNotClearArrays) {
            var info = _info(el);
            _currentInstance.destroyDroppable(info.el, "internal");
            var eldefs = this.sourceEndpointDefinitions[info.id];
            if (eldefs) {
                for (var def in eldefs) {
                    if (connectionType == null || connectionType === def) {
                        var mouseDownListener = eldefs[def].trigger;
                        if (mouseDownListener) {
                            _currentInstance.off(info.el, "mousedown", mouseDownListener);
                        }
                        if (!doNotClearArrays) {
                            delete this.sourceEndpointDefinitions[info.id][def];
                        }
                    }
                }
            }

            return this;
        };

        // see api docs
        this.unmakeEverySource = function () {
            for (var i in this.sourceEndpointDefinitions) {
                _currentInstance.unmakeSource(i, null, true);
            }

            this.sourceEndpointDefinitions = {};
            return this;
        };

        var _getScope = function (el, types, connectionType) {
            types = _ju.isArray(types) ? types : [ types ];
            var id = _getId(el);
            connectionType = connectionType || "default";
            for (var i = 0; i < types.length; i++) {
                var eldefs = this[types[i]][id];
                if (eldefs && eldefs[connectionType]) {
                    return eldefs[connectionType].def.scope || this.Defaults.Scope;
                }
            }
        }.bind(this);

        var _setScope = function (el, scope, types, connectionType) {
            types = _ju.isArray(types) ? types : [ types ];
            var id = _getId(el);
            connectionType = connectionType || "default";
            for (var i = 0; i < types.length; i++) {
                var eldefs = this[types[i]][id];
                if (eldefs && eldefs[connectionType]) {
                    eldefs[connectionType].def.scope = scope;
                }
            }

        }.bind(this);

        this.getScope = function (el, scope) {
            return _getScope(el, [ "sourceEndpointDefinitions", "targetEndpointDefinitions" ]);
        };
        this.getSourceScope = function (el) {
            return _getScope(el, "sourceEndpointDefinitions");
        };
        this.getTargetScope = function (el) {
            return _getScope(el, "targetEndpointDefinitions");
        };
        this.setScope = function (el, scope, connectionType) {
            this.setSourceScope(el, scope, connectionType);
            this.setTargetScope(el, scope, connectionType);
        };
        this.setSourceScope = function (el, scope, connectionType) {
            _setScope(el, scope, "sourceEndpointDefinitions", connectionType);
            // we get the source scope during the mousedown event, but we also want to set this.
            this.setDragScope(el, scope);
        };
        this.setTargetScope = function (el, scope, connectionType) {
            _setScope(el, scope, "targetEndpointDefinitions", connectionType);
            this.setDropScope(el, scope);
        };

        // see api docs
        this.unmakeEveryTarget = function () {
            for (var i in this.targetEndpointDefinitions) {
                _currentInstance.unmakeTarget(i, true);
            }

            this.targetEndpointDefinitions = {};
            return this;
        };

        // does the work of setting a source enabled or disabled.
        var _setEnabled = function (type, el, state, toggle, connectionType) {
            var a = type === "source" ? this.sourceEndpointDefinitions : this.targetEndpointDefinitions,
                originalState, info, newState;

            connectionType = connectionType || "default";

            // a selector or an array
            if (el.length && !_ju.isString(el)) {
                originalState = [];
                for (var i = 0, ii = el.length; i < ii; i++) {
                    info = _info(el[i]);
                    if (a[info.id] && a[info.id][connectionType]) {
                        originalState[i] = a[info.id][connectionType].enabled;
                        newState = toggle ? !originalState[i] : state;
                        a[info.id][connectionType].enabled = newState;
                        _currentInstance[newState ? "removeClass" : "addClass"](info.el, "jtk-" + type + "-disabled");
                    }
                }
            }
            // otherwise a DOM element or a String ID.
            else {
                info = _info(el);
                var id = info.id;
                if (a[id] && a[id][connectionType]) {
                    originalState = a[id][connectionType].enabled;
                    newState = toggle ? !originalState : state;
                    a[id][connectionType].enabled = newState;
                    _currentInstance[newState ? "removeClass" : "addClass"](info.el, "jtk-" + type + "-disabled");
                }
            }
            return originalState;
        }.bind(this);

        var _first = function (el, fn) {
            if (_ju.isString(el) || !el.length) {
                return fn.apply(this, [ el ]);
            }
            else if (el.length) {
                return fn.apply(this, [ el[0] ]);
            }

        }.bind(this);

        this.toggleSourceEnabled = function (el, connectionType) {
            _setEnabled("source", el, null, true, connectionType);
            return this.isSourceEnabled(el, connectionType);
        };

        this.setSourceEnabled = function (el, state, connectionType) {
            return _setEnabled("source", el, state, null, connectionType);
        };
        this.isSource = function (el, connectionType) {
            connectionType = connectionType || "default";
            return _first(el, function (_el) {
                var eldefs = this.sourceEndpointDefinitions[_info(_el).id];
                return eldefs != null && eldefs[connectionType] != null;
            }.bind(this));
        };
        this.isSourceEnabled = function (el, connectionType) {
            connectionType = connectionType || "default";
            return _first(el, function (_el) {
                var sep = this.sourceEndpointDefinitions[_info(_el).id];
                return sep && sep[connectionType] && sep[connectionType].enabled === true;
            }.bind(this));
        };

        this.toggleTargetEnabled = function (el, connectionType) {
            _setEnabled("target", el, null, true, connectionType);
            return this.isTargetEnabled(el, connectionType);
        };

        this.isTarget = function (el, connectionType) {
            connectionType = connectionType || "default";
            return _first(el, function (_el) {
                var eldefs = this.targetEndpointDefinitions[_info(_el).id];
                return eldefs != null && eldefs[connectionType] != null;
            }.bind(this));
        };
        this.isTargetEnabled = function (el, connectionType) {
            connectionType = connectionType || "default";
            return _first(el, function (_el) {
                var tep = this.targetEndpointDefinitions[_info(_el).id];
                return tep && tep[connectionType] && tep[connectionType].enabled === true;
            }.bind(this));
        };
        this.setTargetEnabled = function (el, state, connectionType) {
            return _setEnabled("target", el, state, null, connectionType);
        };

// --------------------- end makeSource/makeTarget ----------------------------------------------

        this.ready = function (fn) {
            _currentInstance.bind("ready", fn);
        };

        var _elEach = function(el, fn) {
            // support both lists...
            if (typeof el === 'object' && el.length) {
                for (var i = 0, ii = el.length; i < ii; i++) {
                    fn(el[i]);
                }
            }
            else {// ...and single strings or elements.
                fn(el);
            }

            return _currentInstance;
        };

        // repaint some element's endpoints and connections
        this.repaint = function (el, ui, timestamp) {
            return _elEach(el, function(_el) {
                _draw(_el, ui, timestamp);
            });
        };

        this.revalidate = function (el, timestamp, isIdAlready) {
            return _elEach(el, function(_el) {
                var elId = isIdAlready ? _el : _currentInstance.getId(_el);
                _currentInstance.updateOffset({ elId: elId, recalc: true, timestamp:timestamp });
                var dm = _currentInstance.getDragManager();
                if (dm) {
                    dm.updateOffsets(elId);
                }
                _currentInstance.repaint(_el);
            });
        };

        // repaint every endpoint and connection.
        this.repaintEverything = function () {
            // TODO this timestamp causes continuous anchors to not repaint properly.
            // fix this. do not just take out the timestamp. it runs a lot faster with
            // the timestamp included.
            var timestamp = _timestamp(), elId;

            for (elId in endpointsByElement) {
                _currentInstance.updateOffset({ elId: elId, recalc: true, timestamp: timestamp });
            }

            for (elId in endpointsByElement) {
                _draw(elId, null, timestamp);
            }

            return this;
        };

        this.removeAllEndpoints = function (el, recurse, affectedElements) {
            affectedElements = affectedElements || [];
            var _one = function (_el) {
                var info = _info(_el),
                    ebe = endpointsByElement[info.id],
                    i, ii;

                if (ebe) {
                    affectedElements.push(info);
                    for (i = 0, ii = ebe.length; i < ii; i++) {
                        _currentInstance.deleteEndpoint(ebe[i], false);
                    }
                }
                delete endpointsByElement[info.id];

                if (recurse) {
                    if (info.el && info.el.nodeType !== 3 && info.el.nodeType !== 8) {
                        for (i = 0, ii = info.el.childNodes.length; i < ii; i++) {
                            _one(info.el.childNodes[i]);
                        }
                    }
                }

            };
            _one(el);
            return this;
        };

        var _doRemove = function(info, affectedElements) {
            _currentInstance.removeAllEndpoints(info.id, true, affectedElements);
            var dm = _currentInstance.getDragManager();
            var _one = function(_info) {

                if (dm) {
                    dm.elementRemoved(_info.id);
                }
                _currentInstance.anchorManager.clearFor(_info.id);
                _currentInstance.anchorManager.removeFloatingConnection(_info.id);

                if (_currentInstance.isSource(_info.el)) {
                    _currentInstance.unmakeSource(_info.el);
                }
                if (_currentInstance.isTarget(_info.el)) {
                    _currentInstance.unmakeTarget(_info.el);
                }
                _currentInstance.destroyDraggable(_info.el);
                _currentInstance.destroyDroppable(_info.el);


                delete _currentInstance.floatingConnections[_info.id];
                delete managedElements[_info.id];
                delete offsets[_info.id];
                if (_info.el) {
                    _currentInstance.removeElement(_info.el);
                    _info.el._jsPlumb = null;
                }
            };

            // remove all affected child elements
            for (var ae = 1; ae < affectedElements.length; ae++) {
                _one(affectedElements[ae]);
            }
            // and always remove the requested one from the dom.
            _one(info);
        };

        /**
         * Remove the given element, including cleaning up all endpoints registered for it.
         * This is exposed in the public API but also used internally by jsPlumb when removing the
         * element associated with a connection drag.
         */
        this.remove = function (el, doNotRepaint) {
            var info = _info(el), affectedElements = [];
            if (info.text) {
                info.el.parentNode.removeChild(info.el);
            }
            else if (info.id) {
                _currentInstance.batch(function () {
                    _doRemove(info, affectedElements);
                }, doNotRepaint === false);
            }
            return _currentInstance;
        };

        this.empty = function (el, doNotRepaint) {
            var affectedElements = [];
            var _one = function(el, dontRemoveFocus) {
                var info = _info(el);
                if (info.text) {
                    info.el.parentNode.removeChild(info.el);
                }
                else if (info.el) {
                    while(info.el.childNodes.length > 0) {
                        _one(info.el.childNodes[0]);
                    }
                    if (!dontRemoveFocus) {
                        _doRemove(info, affectedElements);
                    }
                }
            };

            _currentInstance.batch(function() {
                _one(el, true);
            }, doNotRepaint === false);

            return _currentInstance;
        };

        this.reset = function (doNotUnbindInstanceEventListeners) {
            _currentInstance.silently(function() {
                _hoverSuspended = false;
                _currentInstance.removeAllGroups();
                _currentInstance.removeGroupManager();
                _currentInstance.deleteEveryEndpoint();
                if (!doNotUnbindInstanceEventListeners) {
                    _currentInstance.unbind();
                }
                this.targetEndpointDefinitions = {};
                this.sourceEndpointDefinitions = {};
                connections.length = 0;
                if (this.doReset) {
                    this.doReset();
                }
            }.bind(this));
        };

        var _clearObject = function (obj) {
            if (obj.canvas && obj.canvas.parentNode) {
                obj.canvas.parentNode.removeChild(obj.canvas);
            }
            obj.cleanup();
            obj.destroy();
        };

        this.clear = function () {
            _currentInstance.select().each(_clearObject);
            _currentInstance.selectEndpoints().each(_clearObject);

            endpointsByElement = {};
            endpointsByUUID = {};
        };

        this.setDefaultScope = function (scope) {
            DEFAULT_SCOPE = scope;
            return _currentInstance;
        };

        // sets whether or not some element should be currently draggable.
        this.setDraggable = _setDraggable;

        this.deriveEndpointAndAnchorSpec = function(type, dontPrependDefault) {
            var bits = ((dontPrependDefault ? "" : "default ") + type).split(/[\s]/), eps = null, ep = null, a = null, as = null;
            for (var i = 0; i < bits.length; i++) {
                var _t = _currentInstance.getType(bits[i], "connection");
                if (_t) {
                    if (_t.endpoints) {
                        eps = _t.endpoints;
                    }
                    if (_t.endpoint) {
                        ep = _t.endpoint;
                    }
                    if (_t.anchors) {
                        as = _t.anchors;
                    }
                    if (_t.anchor) {
                        a = _t.anchor;
                    }
                }
            }
            return { endpoints: eps ? eps : [ ep, ep ], anchors: as ? as : [a, a ]};
        };

        // sets the id of some element, changing whatever we need to to keep track.
        this.setId = function (el, newId, doNotSetAttribute) {
            //
            var id;

            if (_ju.isString(el)) {
                id = el;
            }
            else {
                el = this.getElement(el);
                id = this.getId(el);
            }

            var sConns = this.getConnections({source: id, scope: '*'}, true),
                tConns = this.getConnections({target: id, scope: '*'}, true);

            newId = "" + newId;

            if (!doNotSetAttribute) {
                el = this.getElement(id);
                this.setAttribute(el, "id", newId);
            }
            else {
                el = this.getElement(newId);
            }

            endpointsByElement[newId] = endpointsByElement[id] || [];
            for (var i = 0, ii = endpointsByElement[newId].length; i < ii; i++) {
                endpointsByElement[newId][i].setElementId(newId);
                endpointsByElement[newId][i].setReferenceElement(el);
            }
            delete endpointsByElement[id];

            this.sourceEndpointDefinitions[newId] = this.sourceEndpointDefinitions[id];
            delete this.sourceEndpointDefinitions[id];
            this.targetEndpointDefinitions[newId] = this.targetEndpointDefinitions[id];
            delete this.targetEndpointDefinitions[id];

            this.anchorManager.changeId(id, newId);
            var dm = this.getDragManager();
            if (dm) {
                dm.changeId(id, newId);
            }
            managedElements[newId] = managedElements[id];
            delete managedElements[id];

            var _conns = function (list, epIdx, type) {
                for (var i = 0, ii = list.length; i < ii; i++) {
                    list[i].endpoints[epIdx].setElementId(newId);
                    list[i].endpoints[epIdx].setReferenceElement(el);
                    list[i][type + "Id"] = newId;
                    list[i][type] = el;
                }
            };
            _conns(sConns, 0, "source");
            _conns(tConns, 1, "target");

            this.repaint(newId);
        };

        this.setDebugLog = function (debugLog) {
            log = debugLog;
        };

        this.setSuspendDrawing = function (val, repaintAfterwards) {
            var curVal = _suspendDrawing;
            _suspendDrawing = val;
            if (val) {
                _suspendedAt = new Date().getTime();
            } else {
                _suspendedAt = null;
            }
            if (repaintAfterwards) {
                this.repaintEverything();
            }
            return curVal;
        };

        // returns whether or not drawing is currently suspended.
        this.isSuspendDrawing = function () {
            return _suspendDrawing;
        };

        // return timestamp for when drawing was suspended.
        this.getSuspendedAt = function () {
            return _suspendedAt;
        };

        this.batch = function (fn, doNotRepaintAfterwards) {
            var _wasSuspended = this.isSuspendDrawing();
            if (!_wasSuspended) {
                this.setSuspendDrawing(true);
            }
            try {
                fn();
            }
            catch (e) {
                _ju.log("Function run while suspended failed", e);
            }
            if (!_wasSuspended) {
                this.setSuspendDrawing(false, !doNotRepaintAfterwards);
            }
        };

        this.doWhileSuspended = this.batch;

        this.getCachedData = _getCachedData;
        this.timestamp = _timestamp;
        this.show = function (el, changeEndpoints) {
            _setVisible(el, "block", changeEndpoints);
            return _currentInstance;
        };

        // TODO: update this method to return the current state.
        this.toggleVisible = _toggleVisible;
        this.toggleDraggable = _toggleDraggable;
        this.addListener = this.bind;

        var floatingConnections = [];
        this.registerFloatingConnection = function(info, conn, ep) {
            floatingConnections[info.id] = conn;
            // only register for the target endpoint; we will not be dragging the source at any time
            // before this connection is either discarded or made into a permanent connection.
            _ju.addToList(endpointsByElement, info.id, ep);
        };
        this.getFloatingConnectionFor = function(id) {
            return floatingConnections[id];
        };
    };

    _ju.extend(root.jsPlumbInstance, _ju.EventGenerator, {
        setAttribute: function (el, a, v) {
            this.setAttribute(el, a, v);
        },
        getAttribute: function (el, a) {
            return this.getAttribute(root.jsPlumb.getElement(el), a);
        },
        convertToFullOverlaySpec: function(spec) {
            if (_ju.isString(spec)) {
                spec = [ spec, { } ];
            }
            spec[1].id = spec[1].id || _ju.uuid();
            return spec;
        },
        registerConnectionType: function (id, type) {
            this._connectionTypes[id] = root.jsPlumb.extend({}, type);
            if (type.overlays) {
                var to = {};
                for (var i = 0; i < type.overlays.length; i++) {
                    // if a string, convert to object representation so that we can store the typeid on it.
                    // also assign an id.
                    var fo = this.convertToFullOverlaySpec(type.overlays[i]);
                    to[fo[1].id] = fo;
                }
                this._connectionTypes[id].overlays = to;
            }
        },
        registerConnectionTypes: function (types) {
            for (var i in types) {
                this.registerConnectionType(i, types[i]);
            }
        },
        registerEndpointType: function (id, type) {
            this._endpointTypes[id] = root.jsPlumb.extend({}, type);
            if (type.overlays) {
                var to = {};
                for (var i = 0; i < type.overlays.length; i++) {
                    // if a string, convert to object representation so that we can store the typeid on it.
                    // also assign an id.
                    var fo = this.convertToFullOverlaySpec(type.overlays[i]);
                    to[fo[1].id] = fo;
                }
                this._endpointTypes[id].overlays = to;
            }
        },
        registerEndpointTypes: function (types) {
            for (var i in types) {
                this.registerEndpointType(i, types[i]);
            }
        },
        getType: function (id, typeDescriptor) {
            return typeDescriptor === "connection" ? this._connectionTypes[id] : this._endpointTypes[id];
        },
        setIdChanged: function (oldId, newId) {
            this.setId(oldId, newId, true);
        },
        // set parent: change the parent for some node and update all the registrations we need to.
        setParent: function (el, newParent) {
            var _dom = this.getElement(el),
                _id = this.getId(_dom),
                _pdom = this.getElement(newParent),
                _pid = this.getId(_pdom),
                dm = this.getDragManager();

            _dom.parentNode.removeChild(_dom);
            _pdom.appendChild(_dom);
            if (dm) {
                dm.setParent(_dom, _id, _pdom, _pid);
            }
        },
        extend: function (o1, o2, names) {
            var i;
            if (names) {
                for (i = 0; i < names.length; i++) {
                    o1[names[i]] = o2[names[i]];
                }
            }
            else {
                for (i in o2) {
                    o1[i] = o2[i];
                }
            }

            return o1;
        },
        floatingConnections: {},
        getFloatingAnchorIndex: function (jpc) {
            return jpc.endpoints[0].isFloating() ? 0 : jpc.endpoints[1].isFloating() ? 1 : -1;
        }
    });

    jsPlumbInstance.prototype.Defaults = {
        Anchor: "Bottom",
        Anchors: [ null, null ],
        ConnectionsDetachable: true,
        ConnectionOverlays: [ ],
        Connector: "Bezier",
        Container: null,
        DoNotThrowErrors: false,
        DragOptions: { },
        DropOptions: { },
        Endpoint: "Dot",
        EndpointOverlays: [ ],
        Endpoints: [ null, null ],
        EndpointStyle: { fill: "#456" },
        EndpointStyles: [ null, null ],
        EndpointHoverStyle: null,
        EndpointHoverStyles: [ null, null ],
        HoverPaintStyle: null,
        LabelStyle: { color: "black" },
        LogEnabled: false,
        Overlays: [ ],
        MaxConnections: 1,
        PaintStyle: { "stroke-width": 4, stroke: "#456" },
        ReattachConnections: false,
        RenderMode: "svg",
        Scope: "jsPlumb_DefaultScope"
    };

// --------------------- static instance + module registration -------------------------------------------

// create static instance and assign to window if window exists.	
    var jsPlumb = new jsPlumbInstance();
    // register on 'root' (lets us run on server or browser)
    root.jsPlumb = jsPlumb;
    // add 'getInstance' method to static instance
    jsPlumb.getInstance = function (_defaults, overrideFns) {
        var j = new jsPlumbInstance(_defaults);
        if (overrideFns) {
            for (var ovf in overrideFns) {
                j[ovf] = overrideFns[ovf];
            }
        }
        j.init();
        return j;
    };
    jsPlumb.each = function (spec, fn) {
        if (spec == null) {
            return;
        }
        if (typeof spec === "string") {
            fn(jsPlumb.getElement(spec));
        }
        else if (spec.length != null) {
            for (var i = 0; i < spec.length; i++) {
                fn(jsPlumb.getElement(spec[i]));
            }
        }
        else {
            fn(spec);
        } // assume it's an element.
    };

    // CommonJS
    if (true) {
        exports.jsPlumb = jsPlumb;
    }

// --------------------- end static instance + AMD registration -------------------------------------------		

}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the base functionality for DOM type adapters.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    var root = this, _ju = root.jsPlumbUtil;

    var _genLoc = function (prefix, e) {
            if (e == null) {
                return [ 0, 0 ];
            }
            var ts = _touches(e), t = _getTouch(ts, 0);
            return [t[prefix + "X"], t[prefix + "Y"]];
        },
        _pageLocation = _genLoc.bind(this, "page"),
        _screenLocation = _genLoc.bind(this, "screen"),
        _clientLocation = _genLoc.bind(this, "client"),
        _getTouch = function (touches, idx) {
            return touches.item ? touches.item(idx) : touches[idx];
        },
        _touches = function (e) {
            return e.touches && e.touches.length > 0 ? e.touches :
                    e.changedTouches && e.changedTouches.length > 0 ? e.changedTouches :
                    e.targetTouches && e.targetTouches.length > 0 ? e.targetTouches :
                [ e ];
        };

    /**
     Manages dragging for some instance of jsPlumb.

     TODO instead of this being accessed directly, it should subscribe to events on the jsPlumb instance: every method
     in here is called directly by jsPlumb. But what should happen is that we have unpublished events that this listens
     to.  The only trick is getting one of these instantiated with every jsPlumb instance: it needs to have a hook somehow.
     Basically the general idea is to pull ALL the drag code out (prototype method registrations plus this) into a
     dedicated drag script), that does not necessarily need to be included.


     */
    var DragManager = function (_currentInstance) {
        var _draggables = {}, _dlist = [], _delements = {}, _elementsWithEndpoints = {},
        // elementids mapped to the draggable to which they belong.
            _draggablesForElements = {};

        /**
         register some element as draggable.  right now the drag init stuff is done elsewhere, and it is
         possible that will continue to be the case.
         */
        this.register = function (el) {
            var id = _currentInstance.getId(el),
                parentOffset = _currentInstance.getOffset(el);

            if (!_draggables[id]) {
                _draggables[id] = el;
                _dlist.push(el);
                _delements[id] = {};
            }

            // look for child elements that have endpoints and register them against this draggable.
            var _oneLevel = function (p) {
                if (p) {
                    for (var i = 0; i < p.childNodes.length; i++) {
                        if (p.childNodes[i].nodeType !== 3 && p.childNodes[i].nodeType !== 8) {
                            var cEl = jsPlumb.getElement(p.childNodes[i]),
                                cid = _currentInstance.getId(p.childNodes[i], null, true);
                            if (cid && _elementsWithEndpoints[cid] && _elementsWithEndpoints[cid] > 0) {
                                var cOff = _currentInstance.getOffset(cEl);
                                _delements[id][cid] = {
                                    id: cid,
                                    offset: {
                                        left: cOff.left - parentOffset.left,
                                        top: cOff.top - parentOffset.top
                                    }
                                };
                                _draggablesForElements[cid] = id;
                            }
                            _oneLevel(p.childNodes[i]);
                        }
                    }
                }
            };

            _oneLevel(el);
        };

        // refresh the offsets for child elements of this element.
        this.updateOffsets = function (elId, childOffsetOverrides) {
            if (elId != null) {
                childOffsetOverrides = childOffsetOverrides || {};
                var domEl = jsPlumb.getElement(elId),
                    id = _currentInstance.getId(domEl),
                    children = _delements[id],
                    parentOffset = _currentInstance.getOffset(domEl);

                if (children) {
                    for (var i in children) {
                        if (children.hasOwnProperty(i)) {
                            var cel = jsPlumb.getElement(i),
                                cOff = childOffsetOverrides[i] || _currentInstance.getOffset(cel);

                            // do not update if we have a value already and we'd just be writing 0,0
                            if (cel.offsetParent == null && _delements[id][i] != null) {
                                continue;
                            }

                            _delements[id][i] = {
                                id: i,
                                offset: {
                                    left: cOff.left - parentOffset.left,
                                    top: cOff.top - parentOffset.top
                                }
                            };
                            _draggablesForElements[i] = id;
                        }
                    }
                }
            }
        };

        /**
         notification that an endpoint was added to the given el.  we go up from that el's parent
         node, looking for a parent that has been registered as a draggable. if we find one, we add this
         el to that parent's list of elements to update on drag (if it is not there already)
         */
        this.endpointAdded = function (el, id) {

            id = id || _currentInstance.getId(el);

            var b = document.body,
                p = el.parentNode;

            _elementsWithEndpoints[id] = _elementsWithEndpoints[id] ? _elementsWithEndpoints[id] + 1 : 1;

            while (p != null && p !== b) {
                var pid = _currentInstance.getId(p, null, true);
                if (pid && _draggables[pid]) {
                    var pLoc = _currentInstance.getOffset(p);

                    if (_delements[pid][id] == null) {
                        var cLoc = _currentInstance.getOffset(el);
                        _delements[pid][id] = {
                            id: id,
                            offset: {
                                left: cLoc.left - pLoc.left,
                                top: cLoc.top - pLoc.top
                            }
                        };
                        _draggablesForElements[id] = pid;
                    }
                    break;
                }
                p = p.parentNode;
            }
        };

        this.endpointDeleted = function (endpoint) {
            if (_elementsWithEndpoints[endpoint.elementId]) {
                _elementsWithEndpoints[endpoint.elementId]--;
                if (_elementsWithEndpoints[endpoint.elementId] <= 0) {
                    for (var i in _delements) {
                        if (_delements.hasOwnProperty(i) && _delements[i]) {
                            delete _delements[i][endpoint.elementId];
                            delete _draggablesForElements[endpoint.elementId];
                        }
                    }
                }
            }
        };

        this.changeId = function (oldId, newId) {
            _delements[newId] = _delements[oldId];
            _delements[oldId] = {};
            _draggablesForElements[newId] = _draggablesForElements[oldId];
            _draggablesForElements[oldId] = null;
        };

        this.getElementsForDraggable = function (id) {
            return _delements[id];
        };

        this.elementRemoved = function (elementId) {
            var elId = _draggablesForElements[elementId];
            if (elId) {
                delete _delements[elId][elementId];
                delete _draggablesForElements[elementId];
            }
        };

        this.reset = function () {
            _draggables = {};
            _dlist = [];
            _delements = {};
            _elementsWithEndpoints = {};
        };

        //
        // notification drag ended. We check automatically if need to update some
        // ancestor's offsets.
        //
        this.dragEnded = function (el) {
            if (el.offsetParent != null) {
                var id = _currentInstance.getId(el),
                    ancestor = _draggablesForElements[id];

                if (ancestor) {
                    this.updateOffsets(ancestor);
                }
            }
        };

        this.setParent = function (el, elId, p, pId, currentChildLocation) {
            var current = _draggablesForElements[elId];
            if (!_delements[pId]) {
                _delements[pId] = {};
            }
            var pLoc = _currentInstance.getOffset(p),
                cLoc = currentChildLocation || _currentInstance.getOffset(el);

            if (current && _delements[current]) {
                delete _delements[current][elId];
            }

            _delements[pId][elId] = {
                id:elId,
                offset : {
                    left: cLoc.left - pLoc.left,
                    top: cLoc.top - pLoc.top
                }
            };
            _draggablesForElements[elId] = pId;
        };

        this.clearParent = function(el, elId) {
            var current = _draggablesForElements[elId];
            if (current) {
                delete _delements[current][elId];
                delete _draggablesForElements[elId];
            }
        };

        this.revalidateParent = function(el, elId, childOffset) {
            var current = _draggablesForElements[elId];
            if (current) {
                var co = {};
                co[elId] = childOffset;
                this.updateOffsets(current, co);
                _currentInstance.revalidate(current);
            }
        };

        this.getDragAncestor = function (el) {
            var de = jsPlumb.getElement(el),
                id = _currentInstance.getId(de),
                aid = _draggablesForElements[id];

            if (aid) {
                return jsPlumb.getElement(aid);
            }
            else {
                return null;
            }
        };

    };

    var trim = function (str) {
            return str == null ? null : (str.replace(/^\s\s*/, '').replace(/\s\s*$/, ''));
        },
        _setClassName = function (el, cn, classList) {
            cn = trim(cn);
            if (typeof el.className.baseVal !== "undefined") {
                el.className.baseVal = cn;
            }
            else {
                el.className = cn;
            }

            // recent (i currently have  61.0.3163.100) version of chrome do not update classList when you set the base val
            // of an svg element's className. in the long run we'd like to move to just using classList anyway
            try {
                var cl = el.classList;
                while (cl.length > 0) {
                    cl.remove(cl.item(0));
                }
                for (var i = 0; i < classList.length; i++) {
                    if (classList[i]) {
                        cl.add(classList[i]);
                    }
                }
            }
            catch(e) {
                // not fatal
                console.log("JSPLUMB: cannot set class list", e);
            }
        },
        _getClassName = function (el) {
            return (typeof el.className.baseVal === "undefined") ? el.className : el.className.baseVal;
        },
        _classManip = function (el, classesToAdd, classesToRemove) {
            classesToAdd = classesToAdd == null ? [] : _ju.isArray(classesToAdd) ? classesToAdd : classesToAdd.split(/\s+/);
            classesToRemove = classesToRemove == null ? [] : _ju.isArray(classesToRemove) ? classesToRemove : classesToRemove.split(/\s+/);

            var className = _getClassName(el),
                curClasses = className.split(/\s+/);

            var _oneSet = function (add, classes) {
                for (var i = 0; i < classes.length; i++) {
                    if (add) {
                        if (curClasses.indexOf(classes[i]) === -1) {
                            curClasses.push(classes[i]);
                        }
                    }
                    else {
                        var idx = curClasses.indexOf(classes[i]);
                        if (idx !== -1) {
                            curClasses.splice(idx, 1);
                        }
                    }
                }
            };

            _oneSet(true, classesToAdd);
            _oneSet(false, classesToRemove);

            _setClassName(el, curClasses.join(" "), curClasses);
        };

    root.jsPlumb.extend(root.jsPlumbInstance.prototype, {

        headless: false,

        pageLocation: _pageLocation,
        screenLocation: _screenLocation,
        clientLocation: _clientLocation,

        getDragManager:function() {
            if (this.dragManager == null) {
                this.dragManager = new DragManager(this);
            }

            return this.dragManager;
        },

        // NEVER CALLED IN THE CURRENT JS
        recalculateOffsets:function(elId) {
            this.getDragManager().updateOffsets(elId);
        },

        // CONVERTED
        createElement:function(tag, style, clazz, atts) {
            return this.createElementNS(null, tag, style, clazz, atts);
        },

        // CONVERTED
        createElementNS:function(ns, tag, style, clazz, atts) {
            var e = ns == null ? document.createElement(tag) : document.createElementNS(ns, tag);
            var i;
            style = style || {};
            for (i in style) {
                e.style[i] = style[i];
            }

            if (clazz) {
                e.className = clazz;
            }

            atts = atts || {};
            for (i in atts) {
                e.setAttribute(i, "" + atts[i]);
            }

            return e;
        },

        // CONVERTED
        getAttribute: function (el, attName) {
            return el.getAttribute != null ? el.getAttribute(attName) : null;
        },

        // CONVERTED
        setAttribute: function (el, a, v) {
            if (el.setAttribute != null) {
                el.setAttribute(a, v);
            }
        },

        // CONVERTED
        setAttributes: function (el, atts) {
            for (var i in atts) {
                if (atts.hasOwnProperty(i)) {
                    el.setAttribute(i, atts[i]);
                }
            }
        },
        appendToRoot: function (node) {
            document.body.appendChild(node);
        },
        // NOT CONVERTING
        getRenderModes: function () {
            return [ "svg"  ];
        },
        // CONVERTED
        getClass:_getClassName,
        // CONVERTED
        addClass: function (el, clazz) {
            jsPlumb.each(el, function (e) {
                _classManip(e, clazz);
            });
        },
        // CONVERTED
        hasClass: function (el, clazz) {
            el = jsPlumb.getElement(el);
            if (el.classList) {
                return el.classList.contains(clazz);
            }
            else {
                return _getClassName(el).indexOf(clazz) !== -1;
            }
        },
        // CONVERTED
        removeClass: function (el, clazz) {
            jsPlumb.each(el, function (e) {
                _classManip(e, null, clazz);
            });
        },
        // CONVERTED
        updateClasses: function (el, toAdd, toRemove) {
            jsPlumb.each(el, function (e) {
                _classManip(e, toAdd, toRemove);
            });
        },
        // CONVERTED
        setClass: function (el, clazz) {
            if (clazz != null) {
                jsPlumb.each(el, function (e) {
                    _setClassName(e, clazz, clazz.split(/\s+/));
                });
            }
        },
        // CONVERTED
        setPosition: function (el, p) {
            el.style.left = p.left + "px";
            el.style.top = p.top + "px";
        },
        // CONVERTED
        getPosition: function (el) {
            var _one = function (prop) {
                var v = el.style[prop];
                return v ? v.substring(0, v.length - 2) : 0;
            };
            return {
                left: _one("left"),
                top: _one("top")
            };
        },
        // CONVERTED
        getStyle:function(el, prop) {
            if (typeof window.getComputedStyle !== 'undefined') {
                return getComputedStyle(el, null).getPropertyValue(prop);
            } else {
                return el.currentStyle[prop];
            }
        },
        // CONVERTED
        getSelector: function (ctx, spec) {
            var sel = null;
            if (arguments.length === 1) {
                sel = ctx.nodeType != null ? ctx : document.querySelectorAll(ctx);
            }
            else {
                sel = ctx.querySelectorAll(spec);
            }

            return sel;
        },
        // CONVERTED
        getOffset:function(el, relativeToRoot, container) {
            el = jsPlumb.getElement(el);
            container = container || this.getContainer();
            var out = {
                    left: el.offsetLeft,
                    top: el.offsetTop
                },
                op = (relativeToRoot  || (container != null && (el !== container && el.offsetParent !== container))) ?  el.offsetParent : null,
                _maybeAdjustScroll = function(offsetParent) {
                    if (offsetParent != null && offsetParent !== document.body && (offsetParent.scrollTop > 0 || offsetParent.scrollLeft > 0)) {
                        out.left -= offsetParent.scrollLeft;
                        out.top -= offsetParent.scrollTop;
                    }
                }.bind(this);

            while (op != null) {
                out.left += op.offsetLeft;
                out.top += op.offsetTop;
                _maybeAdjustScroll(op);
                op = relativeToRoot ? op.offsetParent :
                        op.offsetParent === container ? null : op.offsetParent;
            }

            // if container is scrolled and the element (or its offset parent) is not absolute or fixed, adjust accordingly.
            if (container != null && !relativeToRoot && (container.scrollTop > 0 || container.scrollLeft > 0)) {
                var pp = el.offsetParent != null ? this.getStyle(el.offsetParent, "position") : "static",
                    p = this.getStyle(el, "position");
                if (p !== "absolute" && p !== "fixed" && pp !== "absolute" && pp !== "fixed") {
                    out.left -= container.scrollLeft;
                    out.top -= container.scrollTop;
                }
            }
            return out;
        },
        //
        // return x+y proportion of the given element's size corresponding to the location of the given event.
        //
        getPositionOnElement: function (evt, el, zoom) {
            var box = typeof el.getBoundingClientRect !== "undefined" ? el.getBoundingClientRect() : { left: 0, top: 0, width: 0, height: 0 },
                body = document.body,
                docElem = document.documentElement,
                scrollTop = window.pageYOffset || docElem.scrollTop || body.scrollTop,
                scrollLeft = window.pageXOffset || docElem.scrollLeft || body.scrollLeft,
                clientTop = docElem.clientTop || body.clientTop || 0,
                clientLeft = docElem.clientLeft || body.clientLeft || 0,
                pst = 0,
                psl = 0,
                top = box.top + scrollTop - clientTop + (pst * zoom),
                left = box.left + scrollLeft - clientLeft + (psl * zoom),
                cl = jsPlumb.pageLocation(evt),
                w = box.width || (el.offsetWidth * zoom),
                h = box.height || (el.offsetHeight * zoom),
                x = (cl[0] - left) / w,
                y = (cl[1] - top) / h;

            return [ x, y ];
        },

        /**
         * Gets the absolute position of some element as read from the left/top properties in its style.
         * @method getAbsolutePosition
         * @param {Element} el The element to retrieve the absolute coordinates from. **Note** this is a DOM element, not a selector from the underlying library.
         * @return {Number[]} [left, top] pixel values.
         */
        getAbsolutePosition: function (el) {
            var _one = function (s) {
                var ss = el.style[s];
                if (ss) {
                    return parseFloat(ss.substring(0, ss.length - 2));
                }
            };
            return [ _one("left"), _one("top") ];
        },

        /**
         * Sets the absolute position of some element by setting the left/top properties in its style.
         * @method setAbsolutePosition
         * @param {Element} el The element to set the absolute coordinates on. **Note** this is a DOM element, not a selector from the underlying library.
         * @param {Number[]} xy x and y coordinates
         * @param {Number[]} [animateFrom] Optional previous xy to animate from.
         * @param {Object} [animateOptions] Options for the animation.
         */
        setAbsolutePosition: function (el, xy, animateFrom, animateOptions) {
            if (animateFrom) {
                this.animate(el, {
                    left: "+=" + (xy[0] - animateFrom[0]),
                    top: "+=" + (xy[1] - animateFrom[1])
                }, animateOptions);
            }
            else {
                el.style.left = xy[0] + "px";
                el.style.top = xy[1] + "px";
            }
        },
        /**
         * gets the size for the element, in an array : [ width, height ].
         */
        // CONVERTED
        getSize: function (el) {
            return [ el.offsetWidth, el.offsetHeight ];
        },
        // CONVERTED
        getWidth: function (el) {
            return el.offsetWidth;
        },
        // CONVERTED
        getHeight: function (el) {
            return el.offsetHeight;
        },
        getRenderMode : function() { return "svg"; }

    });
}).call(typeof window !== 'undefined' ? window : this);

/*
 * 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;(function() {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;

    // ------------------------------ BEGIN OverlayCapablejsPlumbUIComponent --------------------------------------------

    var _internalLabelOverlayId = "__label",
    // this is a shortcut helper method to let people add a label as
    // overlay.
        _makeLabelOverlay = function (component, params) {

            var _params = {
                    cssClass: params.cssClass,
                    labelStyle: component.labelStyle,
                    id: _internalLabelOverlayId,
                    component: component,
                    _jsPlumb: component._jsPlumb.instance  // TODO not necessary, since the instance can be accessed through the component.
                },
                mergedParams = _jp.extend(_params, params);

            return new _jp.Overlays[component._jsPlumb.instance.getRenderMode()].Label(mergedParams);
        },
        _processOverlay = function (component, o) {
            var _newOverlay = null;
            if (_ju.isArray(o)) {	// this is for the shorthand ["Arrow", { width:50 }] syntax
                // there's also a three arg version:
                // ["Arrow", { width:50 }, {location:0.7}]
                // which merges the 3rd arg into the 2nd.
                var type = o[0],
                // make a copy of the object so as not to mess up anyone else's reference...
                    p = _jp.extend({component: component, _jsPlumb: component._jsPlumb.instance}, o[1]);
                if (o.length === 3) {
                    _jp.extend(p, o[2]);
                }
                _newOverlay = new _jp.Overlays[component._jsPlumb.instance.getRenderMode()][type](p);
            } else if (o.constructor === String) {
                _newOverlay = new _jp.Overlays[component._jsPlumb.instance.getRenderMode()][o]({component: component, _jsPlumb: component._jsPlumb.instance});
            } else {
                _newOverlay = o;
            }

            _newOverlay.id = _newOverlay.id || _ju.uuid();
            component.cacheTypeItem("overlay", _newOverlay, _newOverlay.id);
            component._jsPlumb.overlays[_newOverlay.id] = _newOverlay;

            return _newOverlay;
        };

    _jp.OverlayCapableJsPlumbUIComponent = function (params) {

        root.jsPlumbUIComponent.apply(this, arguments);
        this._jsPlumb.overlays = {};
        this._jsPlumb.overlayPositions = {};

        if (params.label) {
            this.getDefaultType().overlays[_internalLabelOverlayId] = ["Label", {
                label: params.label,
                location: params.labelLocation || this.defaultLabelLocation || 0.5,
                labelStyle: params.labelStyle || this._jsPlumb.instance.Defaults.LabelStyle,
                id:_internalLabelOverlayId
            }];
        }

        this.setListenerComponent = function (c) {
            if (this._jsPlumb) {
                for (var i in this._jsPlumb.overlays) {
                    this._jsPlumb.overlays[i].setListenerComponent(c);
                }
            }
        };
    };

    _jp.OverlayCapableJsPlumbUIComponent.applyType = function (component, t) {
        if (t.overlays) {
            // loop through the ones in the type. if already present on the component,
            // dont remove or re-add.
            var keep = {}, i;

            for (i in t.overlays) {

                var existing = component._jsPlumb.overlays[t.overlays[i][1].id];
                if (existing) {
                    // maybe update from data, if there were parameterised values for instance.
                    existing.updateFrom(t.overlays[i][1]);
                    keep[t.overlays[i][1].id] = true;
                }
                else {
                    var c = component.getCachedTypeItem("overlay", t.overlays[i][1].id);
                    if (c != null) {
                        c.reattach(component._jsPlumb.instance, component);
                        c.setVisible(true);
                        // maybe update from data, if there were parameterised values for instance.
                        c.updateFrom(t.overlays[i][1]);
                        component._jsPlumb.overlays[c.id] = c;
                    }
                    else {
                        c = component.addOverlay(t.overlays[i], true);
                    }
                    keep[c.id] = true;
                }
            }

            // now loop through the full overlays and remove those that we dont want to keep
            for (i in component._jsPlumb.overlays) {
                if (keep[component._jsPlumb.overlays[i].id] == null) {
                    component.removeOverlay(component._jsPlumb.overlays[i].id, true); // remove overlay but dont clean it up.
                    // that would remove event listeners etc; overlays are never discarded by the types stuff, they are
                    // just detached/reattached.
                }
            }
        }
    };

    _ju.extend(_jp.OverlayCapableJsPlumbUIComponent, root.jsPlumbUIComponent, {

        setHover: function (hover, ignoreAttachedElements) {
            if (this._jsPlumb && !this._jsPlumb.instance.isConnectionBeingDragged()) {
                for (var i in this._jsPlumb.overlays) {
                    this._jsPlumb.overlays[i][hover ? "addClass" : "removeClass"](this._jsPlumb.instance.hoverClass);
                }
            }
        },
        addOverlay: function (overlay, doNotRepaint) {
            var o = _processOverlay(this, overlay);
            if (!doNotRepaint) {
                this.repaint();
            }
            return o;
        },
        getOverlay: function (id) {
            return this._jsPlumb.overlays[id];
        },
        getOverlays: function () {
            return this._jsPlumb.overlays;
        },
        hideOverlay: function (id) {
            var o = this.getOverlay(id);
            if (o) {
                o.hide();
            }
        },
        hideOverlays: function () {
            for (var i in this._jsPlumb.overlays) {
                this._jsPlumb.overlays[i].hide();
            }
        },
        showOverlay: function (id) {
            var o = this.getOverlay(id);
            if (o) {
                o.show();
            }
        },
        showOverlays: function () {
            for (var i in this._jsPlumb.overlays) {
                this._jsPlumb.overlays[i].show();
            }
        },
        removeAllOverlays: function (doNotRepaint) {
            for (var i in this._jsPlumb.overlays) {
                if (this._jsPlumb.overlays[i].cleanup) {
                    this._jsPlumb.overlays[i].cleanup();
                }
            }

            this._jsPlumb.overlays = {};
            this._jsPlumb.overlayPositions = null;
            if (!doNotRepaint) {
                this.repaint();
            }
        },
        removeOverlay: function (overlayId, dontCleanup) {
            var o = this._jsPlumb.overlays[overlayId];
            if (o) {
                o.setVisible(false);
                if (!dontCleanup && o.cleanup) {
                    o.cleanup();
                }
                delete this._jsPlumb.overlays[overlayId];
                if (this._jsPlumb.overlayPositions) {
                    delete this._jsPlumb.overlayPositions[overlayId];
                }
            }
        },
        removeOverlays: function () {
            for (var i = 0, j = arguments.length; i < j; i++) {
                this.removeOverlay(arguments[i]);
            }
        },
        moveParent: function (newParent) {
            if (this.bgCanvas) {
                this.bgCanvas.parentNode.removeChild(this.bgCanvas);
                newParent.appendChild(this.bgCanvas);
            }

            if (this.canvas && this.canvas.parentNode) {
                this.canvas.parentNode.removeChild(this.canvas);
                newParent.appendChild(this.canvas);

                for (var i in this._jsPlumb.overlays) {
                    if (this._jsPlumb.overlays[i].isAppendedAtTopLevel) {
                        var el = this._jsPlumb.overlays[i].getElement();
                        el.parentNode.removeChild(el);
                        newParent.appendChild(el);
                    }
                }
            }
        },
        getLabel: function () {
            var lo = this.getOverlay(_internalLabelOverlayId);
            return lo != null ? lo.getLabel() : null;
        },
        getLabelOverlay: function () {
            return this.getOverlay(_internalLabelOverlayId);
        },
        setLabel: function (l) {
            var lo = this.getOverlay(_internalLabelOverlayId);
            if (!lo) {
                var params = l.constructor === String || l.constructor === Function ? { label: l } : l;
                lo = _makeLabelOverlay(this, params);
                this._jsPlumb.overlays[_internalLabelOverlayId] = lo;
            }
            else {
                if (l.constructor === String || l.constructor === Function) {
                    lo.setLabel(l);
                }
                else {
                    if (l.label) {
                        lo.setLabel(l.label);
                    }
                    if (l.location) {
                        lo.setLocation(l.location);
                    }
                }
            }

            if (!this._jsPlumb.instance.isSuspendDrawing()) {
                this.repaint();
            }
        },
        cleanup: function (force) {
            for (var i in this._jsPlumb.overlays) {
                this._jsPlumb.overlays[i].cleanup(force);
                this._jsPlumb.overlays[i].destroy(force);
            }
            if (force) {
                this._jsPlumb.overlays = {};
                this._jsPlumb.overlayPositions = null;
            }
        },
        setVisible: function (v) {
            this[v ? "showOverlays" : "hideOverlays"]();
        },
        setAbsoluteOverlayPosition: function (overlay, xy) {
            this._jsPlumb.overlayPositions[overlay.id] = xy;
        },
        getAbsoluteOverlayPosition: function (overlay) {
            return this._jsPlumb.overlayPositions ? this._jsPlumb.overlayPositions[overlay.id] : null;
        },
        _clazzManip:function(action, clazz, dontUpdateOverlays) {
            if (!dontUpdateOverlays) {
                for (var i in this._jsPlumb.overlays) {
                    this._jsPlumb.overlays[i][action + "Class"](clazz);
                }
            }
        },
        addClass:function(clazz, dontUpdateOverlays) {
            this._clazzManip("add", clazz, dontUpdateOverlays);
        },
        removeClass:function(clazz, dontUpdateOverlays) {
            this._clazzManip("remove", clazz, dontUpdateOverlays);
        }
    });

// ------------------------------ END OverlayCapablejsPlumbUIComponent --------------------------------------------

}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the code for Endpoints.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 * 
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 * 
 * Dual licensed under the MIT and GPL2 licenses.
 */
;(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;

    // create the drag handler for a connection
    var _makeConnectionDragHandler = function (endpoint, placeholder, _jsPlumb) {
        var stopped = false;
        return {
            drag: function () {
                if (stopped) {
                    stopped = false;
                    return true;
                }

                if (placeholder.element) {
                    var _ui = _jsPlumb.getUIPosition(arguments, _jsPlumb.getZoom());
                    if (_ui != null) {
                        _jsPlumb.setPosition(placeholder.element, _ui);
                    }
                    _jsPlumb.repaint(placeholder.element, _ui);
                    // always repaint the source endpoint, because only continuous/dynamic anchors cause the endpoint
                    // to be repainted, so static anchors need to be told (or the endpoint gets dragged around)
                    endpoint.paint({anchorPoint:endpoint.anchor.getCurrentLocation({element:endpoint})});
                }
            },
            stopDrag: function () {
                stopped = true;
            }
        };
    };

    // creates a placeholder div for dragging purposes, adds it, and pre-computes its offset.
    var _makeDraggablePlaceholder = function (placeholder, _jsPlumb, ipco, ips) {
        var n = _jsPlumb.createElement("div", { position : "absolute" });
        _jsPlumb.appendElement(n);
        var id = _jsPlumb.getId(n);
        _jsPlumb.setPosition(n, ipco);
        n.style.width = ips[0] + "px";
        n.style.height = ips[1] + "px";
        _jsPlumb.manage(id, n, true); // TRANSIENT MANAGE
        // create and assign an id, and initialize the offset.
        placeholder.id = id;
        placeholder.element = n;
    };

    // create a floating endpoint (for drag connections)
    var _makeFloatingEndpoint = function (paintStyle, referenceAnchor, endpoint, referenceCanvas, sourceElement, _jsPlumb, _newEndpoint, scope) {
        var floatingAnchor = new _jp.FloatingAnchor({ reference: referenceAnchor, referenceCanvas: referenceCanvas, jsPlumbInstance: _jsPlumb });
        //setting the scope here should not be the way to fix that mootools issue.  it should be fixed by not
        // adding the floating endpoint as a droppable.  that makes more sense anyway!
        // TRANSIENT MANAGE
        return _newEndpoint({
            paintStyle: paintStyle,
            endpoint: endpoint,
            anchor: floatingAnchor,
            source: sourceElement,
            scope: scope
        });
    };

    var typeParameters = [ "connectorStyle", "connectorHoverStyle", "connectorOverlays",
        "connector", "connectionType", "connectorClass", "connectorHoverClass" ];

    // a helper function that tries to find a connection to the given element, and returns it if so. if elementWithPrecedence is null,
    // or no connection to it is found, we return the first connection in our list.
    var findConnectionToUseForDynamicAnchor = function (ep, elementWithPrecedence) {
        var idx = 0;
        if (elementWithPrecedence != null) {
            for (var i = 0; i < ep.connections.length; i++) {
                if (ep.connections[i].sourceId === elementWithPrecedence || ep.connections[i].targetId === elementWithPrecedence) {
                    idx = i;
                    break;
                }
            }
        }

        return ep.connections[idx];
    };

    _jp.Endpoint = function (params) {
        var _jsPlumb = params._jsPlumb,
            _newConnection = params.newConnection,
            _newEndpoint = params.newEndpoint;

        this.idPrefix = "_jsplumb_e_";
        this.defaultLabelLocation = [ 0.5, 0.5 ];
        this.defaultOverlayKeys = ["Overlays", "EndpointOverlays"];
        _jp.OverlayCapableJsPlumbUIComponent.apply(this, arguments);

// TYPE

        this.appendToDefaultType({
            connectionType:params.connectionType,
            maxConnections: params.maxConnections == null ? this._jsPlumb.instance.Defaults.MaxConnections : params.maxConnections, // maximum number of connections this endpoint can be the source of.,
            paintStyle: params.endpointStyle || params.paintStyle || params.style || this._jsPlumb.instance.Defaults.EndpointStyle || _jp.Defaults.EndpointStyle,
            hoverPaintStyle: params.endpointHoverStyle || params.hoverPaintStyle || this._jsPlumb.instance.Defaults.EndpointHoverStyle || _jp.Defaults.EndpointHoverStyle,
            connectorStyle: params.connectorStyle,
            connectorHoverStyle: params.connectorHoverStyle,
            connectorClass: params.connectorClass,
            connectorHoverClass: params.connectorHoverClass,
            connectorOverlays: params.connectorOverlays,
            connector: params.connector,
            connectorTooltip: params.connectorTooltip
        });

// END TYPE

        this._jsPlumb.enabled = !(params.enabled === false);
        this._jsPlumb.visible = true;
        this.element = _jp.getElement(params.source);
        this._jsPlumb.uuid = params.uuid;
        this._jsPlumb.floatingEndpoint = null;
        var inPlaceCopy = null;
        if (this._jsPlumb.uuid) {
            params.endpointsByUUID[this._jsPlumb.uuid] = this;
        }
        this.elementId = params.elementId;
        this.dragProxy = params.dragProxy;

        this._jsPlumb.connectionCost = params.connectionCost;
        this._jsPlumb.connectionsDirected = params.connectionsDirected;
        this._jsPlumb.currentAnchorClass = "";
        this._jsPlumb.events = {};

        var deleteOnEmpty = params.deleteOnEmpty === true;
        this.setDeleteOnEmpty = function(d) {
            deleteOnEmpty = d;
        };

        var _updateAnchorClass = function () {
            // stash old, get new
            var oldAnchorClass = _jsPlumb.endpointAnchorClassPrefix + "-" + this._jsPlumb.currentAnchorClass;
            this._jsPlumb.currentAnchorClass = this.anchor.getCssClass();
            var anchorClass = _jsPlumb.endpointAnchorClassPrefix + (this._jsPlumb.currentAnchorClass ? "-" + this._jsPlumb.currentAnchorClass : "");

            this.removeClass(oldAnchorClass);
            this.addClass(anchorClass);
            // add and remove at the same time to reduce the number of reflows.
            _jp.updateClasses(this.element, anchorClass, oldAnchorClass);
        }.bind(this);

        this.prepareAnchor = function(anchorParams) {
            var a = this._jsPlumb.instance.makeAnchor(anchorParams, this.elementId, _jsPlumb);
            a.bind("anchorChanged", function (currentAnchor) {
                this.fire("anchorChanged", {endpoint: this, anchor: currentAnchor});
                _updateAnchorClass();
            }.bind(this));
            return a;
        };

        this.setPreparedAnchor = function(anchor, doNotRepaint) {
            this._jsPlumb.instance.continuousAnchorFactory.clear(this.elementId);
            this.anchor = anchor;
            _updateAnchorClass();

            if (!doNotRepaint) {
                this._jsPlumb.instance.repaint(this.elementId);
            }

            return this;
        };

        this.setAnchor = function (anchorParams, doNotRepaint) {
            var a = this.prepareAnchor(anchorParams);
            this.setPreparedAnchor(a, doNotRepaint);
            return this;
        };

        var internalHover = function (state) {
            if (this.connections.length > 0) {
                for (var i = 0; i < this.connections.length; i++) {
                    this.connections[i].setHover(state, false);
                }
            }
            else {
                this.setHover(state);
            }
        }.bind(this);

        this.bind("mouseover", function () {
            internalHover(true);
        });
        this.bind("mouseout", function () {
            internalHover(false);
        });

        // ANCHOR MANAGER
        if (!params._transient) { // in place copies, for example, are transient.  they will never need to be retrieved during a paint cycle, because they dont move, and then they are deleted.
            this._jsPlumb.instance.anchorManager.add(this, this.elementId);
        }

        this.prepareEndpoint = function(ep, typeId) {
            var _e = function (t, p) {
                var rm = _jsPlumb.getRenderMode();
                if (_jp.Endpoints[rm][t]) {
                    return new _jp.Endpoints[rm][t](p);
                }
                if (!_jsPlumb.Defaults.DoNotThrowErrors) {
                    throw { msg: "jsPlumb: unknown endpoint type '" + t + "'" };
                }
            };

            var endpointArgs = {
                _jsPlumb: this._jsPlumb.instance,
                cssClass: params.cssClass,
                container: params.container,
                tooltip: params.tooltip,
                connectorTooltip: params.connectorTooltip,
                endpoint: this
            };

            var endpoint;

            if (_ju.isString(ep)) {
                endpoint = _e(ep, endpointArgs);
            }
            else if (_ju.isArray(ep)) {
                endpointArgs = _ju.merge(ep[1], endpointArgs);
                endpoint = _e(ep[0], endpointArgs);
            }
            else {
                endpoint = ep.clone();
            }

            // assign a clone function using a copy of endpointArgs. this is used when a drag starts: the endpoint that was dragged is cloned,
            // and the clone is left in its place while the original one goes off on a magical journey.
            // the copy is to get around a closure problem, in which endpointArgs ends up getting shared by
            // the whole world.
            //var argsForClone = jsPlumb.extend({}, endpointArgs);
            endpoint.clone = function () {
                // TODO this, and the code above, can be refactored to be more dry.
                if (_ju.isString(ep)) {
                    return _e(ep, endpointArgs);
                }
                else if (_ju.isArray(ep)) {
                    endpointArgs = _ju.merge(ep[1], endpointArgs);
                    return _e(ep[0], endpointArgs);
                }
            }.bind(this);

            endpoint.typeId = typeId;
            return endpoint;
        };

        this.setEndpoint = function(ep, doNotRepaint) {
            var _ep = this.prepareEndpoint(ep);
            this.setPreparedEndpoint(_ep, true);
        };

        this.setPreparedEndpoint = function (ep, doNotRepaint) {
            if (this.endpoint != null) {
                this.endpoint.cleanup();
                this.endpoint.destroy();
            }
            this.endpoint = ep;
            this.type = this.endpoint.type;
            this.canvas = this.endpoint.canvas;
        };

        _jp.extend(this, params, typeParameters);

        this.isSource = params.isSource || false;
        this.isTemporarySource = params.isTemporarySource || false;
        this.isTarget = params.isTarget || false;

        this.connections = params.connections || [];
        this.connectorPointerEvents = params["connector-pointer-events"];

        this.scope = params.scope || _jsPlumb.getDefaultScope();
        this.timestamp = null;
        this.reattachConnections = params.reattach || _jsPlumb.Defaults.ReattachConnections;
        this.connectionsDetachable = _jsPlumb.Defaults.ConnectionsDetachable;
        if (params.connectionsDetachable === false || params.detachable === false) {
            this.connectionsDetachable = false;
        }
        this.dragAllowedWhenFull = params.dragAllowedWhenFull !== false;

        if (params.onMaxConnections) {
            this.bind("maxConnections", params.onMaxConnections);
        }

        //
        // add a connection. not part of public API.
        //
        this.addConnection = function (connection) {
            this.connections.push(connection);
            this[(this.connections.length > 0 ? "add" : "remove") + "Class"](_jsPlumb.endpointConnectedClass);
            this[(this.isFull() ? "add" : "remove") + "Class"](_jsPlumb.endpointFullClass);
        };

        this.detachFromConnection = function (connection, idx, doNotCleanup) {
            idx = idx == null ? this.connections.indexOf(connection) : idx;
            if (idx >= 0) {
                this.connections.splice(idx, 1);
                this[(this.connections.length > 0 ? "add" : "remove") + "Class"](_jsPlumb.endpointConnectedClass);
                this[(this.isFull() ? "add" : "remove") + "Class"](_jsPlumb.endpointFullClass);
            }

            if (!doNotCleanup && deleteOnEmpty && this.connections.length === 0) {
                _jsPlumb.deleteObject({
                    endpoint: this,
                    fireEvent: false,
                    deleteAttachedObjects: doNotCleanup !== true
                });
            }
        };

        this.deleteEveryConnection = function(params) {
            var c = this.connections.length;
            for (var i = 0; i < c; i++) {
                _jsPlumb.deleteConnection(this.connections[0], params);
            }
        };

        this.detachFrom = function (targetEndpoint, fireEvent, originalEvent) {
            var c = [];
            for (var i = 0; i < this.connections.length; i++) {
                if (this.connections[i].endpoints[1] === targetEndpoint || this.connections[i].endpoints[0] === targetEndpoint) {
                    c.push(this.connections[i]);
                }
            }
            for (var j = 0, count = c.length; j < count; j++) {
                _jsPlumb.deleteConnection(c[0]);
            }
            return this;
        };

        this.getElement = function () {
            return this.element;
        };

        this.setElement = function (el) {
            var parentId = this._jsPlumb.instance.getId(el),
                curId = this.elementId;
            // remove the endpoint from the list for the current endpoint's element
            _ju.removeWithFunction(params.endpointsByElement[this.elementId], function (e) {
                return e.id === this.id;
            }.bind(this));
            this.element = _jp.getElement(el);
            this.elementId = _jsPlumb.getId(this.element);
            _jsPlumb.anchorManager.rehomeEndpoint(this, curId, this.element);
            _jsPlumb.dragManager.endpointAdded(this.element);
            _ju.addToList(params.endpointsByElement, parentId, this);
            return this;
        };

        /**
         * private but must be exposed.
         */
        this.makeInPlaceCopy = function () {
            var loc = this.anchor.getCurrentLocation({element: this}),
                o = this.anchor.getOrientation(this),
                acc = this.anchor.getCssClass(),
                inPlaceAnchor = {
                    bind: function () {
                    },
                    compute: function () {
                        return [ loc[0], loc[1] ];
                    },
                    getCurrentLocation: function () {
                        return [ loc[0], loc[1] ];
                    },
                    getOrientation: function () {
                        return o;
                    },
                    getCssClass: function () {
                        return acc;
                    }
                };

            return _newEndpoint({
                dropOptions: params.dropOptions,
                anchor: inPlaceAnchor,
                source: this.element,
                paintStyle: this.getPaintStyle(),
                endpoint: params.hideOnDrag ? "Blank" : this.endpoint,
                _transient: true,
                scope: this.scope,
                reference:this
            });
        };

        /**
         * returns a connection from the pool; used when dragging starts.  just gets the head of the array if it can.
         */
        this.connectorSelector = function () {
            return this.connections[0];
        };

        this.setStyle = this.setPaintStyle;

        this.paint = function (params) {
            params = params || {};
            var timestamp = params.timestamp, recalc = !(params.recalc === false);
            if (!timestamp || this.timestamp !== timestamp) {

                var info = _jsPlumb.updateOffset({ elId: this.elementId, timestamp: timestamp });

                var xy = params.offset ? params.offset.o : info.o;
                if (xy != null) {
                    var ap = params.anchorPoint, connectorPaintStyle = params.connectorPaintStyle;
                    if (ap == null) {
                        var wh = params.dimensions || info.s,
                            anchorParams = { xy: [ xy.left, xy.top ], wh: wh, element: this, timestamp: timestamp };
                        if (recalc && this.anchor.isDynamic && this.connections.length > 0) {
                            var c = findConnectionToUseForDynamicAnchor(this, params.elementWithPrecedence),
                                oIdx = c.endpoints[0] === this ? 1 : 0,
                                oId = oIdx === 0 ? c.sourceId : c.targetId,
                                oInfo = _jsPlumb.getCachedData(oId),
                                oOffset = oInfo.o, oWH = oInfo.s;

                            anchorParams.index = oIdx === 0 ? 1 : 0;
                            anchorParams.connection = c;
                            anchorParams.txy = [ oOffset.left, oOffset.top ];
                            anchorParams.twh = oWH;
                            anchorParams.tElement = c.endpoints[oIdx];
                        } else if (this.connections.length > 0) {
                            anchorParams.connection = this.connections[0];
                        }
                        ap = this.anchor.compute(anchorParams);
                    }

                    this.endpoint.compute(ap, this.anchor.getOrientation(this), this._jsPlumb.paintStyleInUse, connectorPaintStyle || this.paintStyleInUse);
                    this.endpoint.paint(this._jsPlumb.paintStyleInUse, this.anchor);
                    this.timestamp = timestamp;

                    // paint overlays
                    for (var i in this._jsPlumb.overlays) {
                        if (this._jsPlumb.overlays.hasOwnProperty(i)) {
                            var o = this._jsPlumb.overlays[i];
                            if (o.isVisible()) {
                                this._jsPlumb.overlayPlacements[i] = o.draw(this.endpoint, this._jsPlumb.paintStyleInUse);
                                o.paint(this._jsPlumb.overlayPlacements[i]);
                            }
                        }
                    }
                }
            }
        };

        this.getTypeDescriptor = function () {
            return "endpoint";
        };
        this.isVisible = function () {
            return this._jsPlumb.visible;
        };

        this.repaint = this.paint;

        var draggingInitialised = false;
        this.initDraggable = function () {

            // is this a connection source? we make it draggable and have the
            // drag listener maintain a connection with a floating endpoint.
            if (!draggingInitialised && _jp.isDragSupported(this.element)) {
                var placeholderInfo = { id: null, element: null },
                    jpc = null,
                    existingJpc = false,
                    existingJpcParams = null,
                    _dragHandler = _makeConnectionDragHandler(this, placeholderInfo, _jsPlumb),
                    dragOptions = params.dragOptions || {},
                    defaultOpts = {},
                    startEvent = _jp.dragEvents.start,
                    stopEvent = _jp.dragEvents.stop,
                    dragEvent = _jp.dragEvents.drag,
                    beforeStartEvent = _jp.dragEvents.beforeStart,
                    payload;

                // respond to beforeStart from katavorio; this will have, optionally, a payload of attribute values
                // that were placed there by the makeSource mousedown listener.
                var beforeStart = function(beforeStartParams) {
                    payload = beforeStartParams.e.payload || {};
                };

                var start = function (startParams) {

// -------------   first, get a connection to drag. this may be null, in which case we are dragging a new one.

                    jpc = this.connectorSelector();

// -------------------------------- now a bunch of tests about whether or not to proceed -------------------------

                    var _continue = true;
                    // if not enabled, return
                    if (!this.isEnabled()) {
                        _continue = false;
                    }
                    // if no connection and we're not a source - or temporarily a source, as is the case with makeSource - return.
                    if (jpc == null && !this.isSource && !this.isTemporarySource) {
                        _continue = false;
                    }
                    // otherwise if we're full and not allowed to drag, also return false.
                    if (this.isSource && this.isFull() && !(jpc != null && this.dragAllowedWhenFull)) {
                        _continue = false;
                    }
                    // if the connection was setup as not detachable or one of its endpoints
                    // was setup as connectionsDetachable = false, or Defaults.ConnectionsDetachable
                    // is set to false...
                    if (jpc != null && !jpc.isDetachable(this)) {
                        _continue = false;
                    }

                    var beforeDrag = _jsPlumb.checkCondition(jpc == null ? "beforeDrag" : "beforeStartDetach", {
                        endpoint:this,
                        source:this.element,
                        sourceId:this.elementId,
                        connection:jpc
                    });
                    if (beforeDrag === false) {
                        _continue = false;
                    }
                    // else we might have been given some data. we'll pass it in to a new connection as 'data'.
                    // here we also merge in the optional payload we were given on mousedown.
                    else if (typeof beforeDrag === "object") {
                        _jp.extend(beforeDrag, payload || {});
                    }
                    else {
                        // or if no beforeDrag data, maybe use the payload on its own.
                        beforeDrag = payload || {};
                    }

                    if (_continue === false) {
                        // this is for mootools and yui. returning false from this causes jquery to stop drag.
                        // the events are wrapped in both mootools and yui anyway, but i don't think returning
                        // false from the start callback would stop a drag.
                        if (_jsPlumb.stopDrag) {
                            _jsPlumb.stopDrag(this.canvas);
                        }
                        _dragHandler.stopDrag();
                        return false;
                    }

// ---------------------------------------------------------------------------------------------------------------------

                    // ok to proceed.

                    // clear hover for all connections for this endpoint before continuing.
                    for (var i = 0; i < this.connections.length; i++) {
                        this.connections[i].setHover(false);
                    }

                    this.addClass("endpointDrag");
                    _jsPlumb.setConnectionBeingDragged(true);

                    // if we're not full but there was a connection, make it null. we'll create a new one.
                    if (jpc && !this.isFull() && this.isSource) {
                        jpc = null;
                    }

                    _jsPlumb.updateOffset({ elId: this.elementId });

// ----------------    make the element we will drag around, and position it -----------------------------

                    var ipco = this._jsPlumb.instance.getOffset(this.canvas),
                        canvasElement = this.canvas,
                        ips = this._jsPlumb.instance.getSize(this.canvas);

                    _makeDraggablePlaceholder(placeholderInfo, _jsPlumb, ipco, ips);

                    // store the id of the dragging div and the source element. the drop function will pick these up.                   
                    _jsPlumb.setAttributes(this.canvas, {
                        "dragId": placeholderInfo.id,
                        "elId": this.elementId
                    });

// ------------------- create an endpoint that will be our floating endpoint ------------------------------------

                    var endpointToFloat = this.dragProxy || this.endpoint;
                    if (this.dragProxy == null && this.connectionType != null) {
                        var aae = this._jsPlumb.instance.deriveEndpointAndAnchorSpec(this.connectionType);
                        if (aae.endpoints[1]) {
                            endpointToFloat = aae.endpoints[1];
                        }
                    }
                    var centerAnchor = this._jsPlumb.instance.makeAnchor("Center");
                    centerAnchor.isFloating = true;
                    this._jsPlumb.floatingEndpoint = _makeFloatingEndpoint(this.getPaintStyle(), centerAnchor, endpointToFloat, this.canvas, placeholderInfo.element, _jsPlumb, _newEndpoint, this.scope);
                    var _savedAnchor = this._jsPlumb.floatingEndpoint.anchor;


                    if (jpc == null) {

                        this.setHover(false, false);
                        // create a connection. one end is this endpoint, the other is a floating endpoint.                    
                        jpc = _newConnection({
                            sourceEndpoint: this,
                            targetEndpoint: this._jsPlumb.floatingEndpoint,
                            source: this.element,  // for makeSource with parent option.  ensure source element is represented correctly.
                            target: placeholderInfo.element,
                            anchors: [ this.anchor, this._jsPlumb.floatingEndpoint.anchor ],
                            paintStyle: params.connectorStyle, // this can be null. Connection will use the default.
                            hoverPaintStyle: params.connectorHoverStyle,
                            connector: params.connector, // this can also be null. Connection will use the default.
                            overlays: params.connectorOverlays,
                            type: this.connectionType,
                            cssClass: this.connectorClass,
                            hoverClass: this.connectorHoverClass,
                            scope:params.scope,
                            data:beforeDrag
                        });
                        jpc.pending = true;
                        jpc.addClass(_jsPlumb.draggingClass);
                        this._jsPlumb.floatingEndpoint.addClass(_jsPlumb.draggingClass);
                        this._jsPlumb.floatingEndpoint.anchor = _savedAnchor;
                        // fire an event that informs that a connection is being dragged
                        _jsPlumb.fire("connectionDrag", jpc);

                        // register the new connection on the drag manager. This connection, at this point, is 'pending',
                        // and has as its target a temporary element (the 'placeholder'). If the connection subsequently
                        // becomes established, the anchor manager is informed that the target of the connection has
                        // changed.

                        _jsPlumb.anchorManager.newConnection(jpc);

                    } else {
                        existingJpc = true;
                        jpc.setHover(false);
                        // new anchor idx
                        var anchorIdx = jpc.endpoints[0].id === this.id ? 0 : 1;
                        this.detachFromConnection(jpc, null, true);                         // detach from the connection while dragging is occurring. but dont cleanup automatically.

                        // store the original scope (issue 57)
                        var dragScope = _jsPlumb.getDragScope(canvasElement);
                        _jsPlumb.setAttribute(this.canvas, "originalScope", dragScope);

                        // fire an event that informs that a connection is being dragged. we do this before
                        // replacing the original target with the floating element info.
                        _jsPlumb.fire("connectionDrag", jpc);

                        // now we replace ourselves with the temporary div we created above:
                        if (anchorIdx === 0) {
                            existingJpcParams = [ jpc.source, jpc.sourceId, canvasElement, dragScope ];
                            _jsPlumb.anchorManager.sourceChanged(jpc.endpoints[anchorIdx].elementId, placeholderInfo.id, jpc, placeholderInfo.element);

                        } else {
                            existingJpcParams = [ jpc.target, jpc.targetId, canvasElement, dragScope ];
                            jpc.target = placeholderInfo.element;
                            jpc.targetId = placeholderInfo.id;

                            _jsPlumb.anchorManager.updateOtherEndpoint(jpc.sourceId, jpc.endpoints[anchorIdx].elementId, jpc.targetId, jpc);
                        }

                        // store the original endpoint and assign the new floating endpoint for the drag.
                        jpc.suspendedEndpoint = jpc.endpoints[anchorIdx];

                        // PROVIDE THE SUSPENDED ELEMENT, BE IT A SOURCE OR TARGET (ISSUE 39)
                        jpc.suspendedElement = jpc.endpoints[anchorIdx].getElement();
                        jpc.suspendedElementId = jpc.endpoints[anchorIdx].elementId;
                        jpc.suspendedElementType = anchorIdx === 0 ? "source" : "target";

                        jpc.suspendedEndpoint.setHover(false);
                        this._jsPlumb.floatingEndpoint.referenceEndpoint = jpc.suspendedEndpoint;
                        jpc.endpoints[anchorIdx] = this._jsPlumb.floatingEndpoint;

                        jpc.addClass(_jsPlumb.draggingClass);
                        this._jsPlumb.floatingEndpoint.addClass(_jsPlumb.draggingClass);
                    }

                    _jsPlumb.registerFloatingConnection(placeholderInfo, jpc, this._jsPlumb.floatingEndpoint);

                    // // register it and register connection on it.
                    // _jsPlumb.floatingConnections[placeholderInfo.id] = jpc;
                    //
                    // // only register for the target endpoint; we will not be dragging the source at any time
                    // // before this connection is either discarded or made into a permanent connection.
                    // _ju.addToList(params.endpointsByElement, placeholderInfo.id, this._jsPlumb.floatingEndpoint);


                    // tell jsplumb about it
                    _jsPlumb.currentlyDragging = true;
                }.bind(this);

                var stop = function () {
                    _jsPlumb.setConnectionBeingDragged(false);

                    if (jpc && jpc.endpoints != null) {
                        // get the actual drop event (decode from library args to stop function)
                        var originalEvent = _jsPlumb.getDropEvent(arguments);
                        // unlock the other endpoint (if it is dynamic, it would have been locked at drag start)
                        var idx = _jsPlumb.getFloatingAnchorIndex(jpc);
                        jpc.endpoints[idx === 0 ? 1 : 0].anchor.locked = false;
                        // TODO: Dont want to know about css classes inside jsplumb, ideally.
                        jpc.removeClass(_jsPlumb.draggingClass);

                        // if we have the floating endpoint then the connection has not been dropped
                        // on another endpoint.  If it is a new connection we throw it away. If it is an
                        // existing connection we check to see if we should reattach it, throwing it away
                        // if not.
                        if (this._jsPlumb && (jpc.deleteConnectionNow || jpc.endpoints[idx] === this._jsPlumb.floatingEndpoint)) {
                            // 6a. if the connection was an existing one...
                            if (existingJpc && jpc.suspendedEndpoint) {
                                // fix for issue35, thanks Sylvain Gizard: when firing the detach event make sure the
                                // floating endpoint has been replaced.
                                if (idx === 0) {
                                    jpc.floatingElement = jpc.source;
                                    jpc.floatingId = jpc.sourceId;
                                    jpc.floatingEndpoint = jpc.endpoints[0];
                                    jpc.floatingIndex = 0;
                                    jpc.source = existingJpcParams[0];
                                    jpc.sourceId = existingJpcParams[1];
                                } else {
                                    // keep a copy of the floating element; the anchor manager will want to clean up.
                                    jpc.floatingElement = jpc.target;
                                    jpc.floatingId = jpc.targetId;
                                    jpc.floatingEndpoint = jpc.endpoints[1];
                                    jpc.floatingIndex = 1;
                                    jpc.target = existingJpcParams[0];
                                    jpc.targetId = existingJpcParams[1];
                                }

                                var fe = this._jsPlumb.floatingEndpoint; // store for later removal.
                                // restore the original scope (issue 57)
                                _jsPlumb.setDragScope(existingJpcParams[2], existingJpcParams[3]);
                                jpc.endpoints[idx] = jpc.suspendedEndpoint;
                                // if the connection should be reattached, or the other endpoint refuses detach, then
                                // reset the connection to its original state
                                if (jpc.isReattach() || jpc._forceReattach || jpc._forceDetach || !_jsPlumb.deleteConnection(jpc, {originalEvent: originalEvent})) {

                                    jpc.setHover(false);
                                    jpc._forceDetach = null;
                                    jpc._forceReattach = null;
                                    this._jsPlumb.floatingEndpoint.detachFromConnection(jpc);
                                    jpc.suspendedEndpoint.addConnection(jpc);

                                    // TODO this code is duplicated in lots of places...and there is nothing external
                                    // in the code; it all refers to the connection itself. we could add a
                                    // `checkSanity(connection)` method to anchorManager that did this.
                                    if (idx === 1) {
                                        _jsPlumb.anchorManager.updateOtherEndpoint(jpc.sourceId, jpc.floatingId, jpc.targetId, jpc);
                                    }
                                    else {
                                        _jsPlumb.anchorManager.sourceChanged(jpc.floatingId, jpc.sourceId, jpc, jpc.source);
                                    }

                                    _jsPlumb.repaint(existingJpcParams[1]);
                                }
                                else {
                                    _jsPlumb.deleteObject({endpoint: fe});
                                }
                            }
                        }

                        // makeTargets sets this flag, to tell us we have been replaced and should delete this object.
                        if (this.deleteAfterDragStop) {
                            _jsPlumb.deleteObject({endpoint: this});
                        }
                        else {
                            if (this._jsPlumb) {
                                 this.paint({recalc: false});
                            }
                        }

                        // although the connection is no longer valid, there are use cases where this is useful.
                        _jsPlumb.fire("connectionDragStop", jpc, originalEvent);
                        // fire this event to give people more fine-grained control (connectionDragStop fires a lot)
                        if (jpc.pending) {
                            _jsPlumb.fire("connectionAborted", jpc, originalEvent);
                        }
                        // tell jsplumb that dragging is finished.
                        _jsPlumb.currentlyDragging = false;
                        jpc.suspendedElement = null;
                        jpc.suspendedEndpoint = null;
                        jpc = null;
                    }

                    // if no endpoints, jpc already cleaned up. but still we want to ensure we're reset properly.
                    // remove the element associated with the floating endpoint
                    // (and its associated floating endpoint and visual artefacts)
                    if (placeholderInfo && placeholderInfo.element) {
                        _jsPlumb.remove(placeholderInfo.element, false, false);
                    }
                    // remove the inplace copy
                    if (inPlaceCopy) {
                        _jsPlumb.deleteObject({endpoint: inPlaceCopy});
                    }

                    if (this._jsPlumb) {
                        // make our canvas visible (TODO: hand off to library; we should not know about DOM)
                        this.canvas.style.visibility = "visible";
                        // unlock our anchor
                        this.anchor.locked = false;
                        // clear floating anchor.
                        this._jsPlumb.floatingEndpoint = null;
                    }

                }.bind(this);

                dragOptions = _jp.extend(defaultOpts, dragOptions);
                dragOptions.scope = this.scope || dragOptions.scope;
                dragOptions[beforeStartEvent] = _ju.wrap(dragOptions[beforeStartEvent], beforeStart, false);
                dragOptions[startEvent] = _ju.wrap(dragOptions[startEvent], start, false);
                // extracted drag handler function so can be used by makeSource
                dragOptions[dragEvent] = _ju.wrap(dragOptions[dragEvent], _dragHandler.drag);
                dragOptions[stopEvent] = _ju.wrap(dragOptions[stopEvent], stop);
                dragOptions.multipleDrop = false;

                dragOptions.canDrag = function () {
                    return this.isSource || this.isTemporarySource || /*(this.isTarget && */this.connections.length > 0/*)*/;
                }.bind(this);

                _jsPlumb.initDraggable(this.canvas, dragOptions, "internal");

                this.canvas._jsPlumbRelatedElement = this.element;

                draggingInitialised = true;
            }
        };

        var ep = params.endpoint || this._jsPlumb.instance.Defaults.Endpoint || _jp.Defaults.Endpoint;
        this.setEndpoint(ep, true);
        var anchorParamsToUse = params.anchor ? params.anchor : params.anchors ? params.anchors : (_jsPlumb.Defaults.Anchor || "Top");
        this.setAnchor(anchorParamsToUse, true);

        // finally, set type if it was provided
        var type = [ "default", (params.type || "")].join(" ");
        this.addType(type, params.data, true);
        this.canvas = this.endpoint.canvas;
        this.canvas._jsPlumb = this;

        this.initDraggable();

        // pulled this out into a function so we can reuse it for the inPlaceCopy canvas; you can now drop detached connections
        // back onto the endpoint you detached it from.
        var _initDropTarget = function (canvas, isTransient, endpoint, referenceEndpoint) {

            if (_jp.isDropSupported(this.element)) {
                var dropOptions = params.dropOptions || _jsPlumb.Defaults.DropOptions || _jp.Defaults.DropOptions;
                dropOptions = _jp.extend({}, dropOptions);
                dropOptions.scope = dropOptions.scope || this.scope;
                var dropEvent = _jp.dragEvents.drop,
                    overEvent = _jp.dragEvents.over,
                    outEvent = _jp.dragEvents.out,
                    _ep = this,
                    drop = _jsPlumb.EndpointDropHandler({
                        getEndpoint: function () {
                            return _ep;
                        },
                        jsPlumb: _jsPlumb,
                        enabled: function () {
                            return endpoint != null ? endpoint.isEnabled() : true;
                        },
                        isFull: function () {
                            return endpoint.isFull();
                        },
                        element: this.element,
                        elementId: this.elementId,
                        isSource: this.isSource,
                        isTarget: this.isTarget,
                        addClass: function (clazz) {
                            _ep.addClass(clazz);
                        },
                        removeClass: function (clazz) {
                            _ep.removeClass(clazz);
                        },
                        isDropAllowed: function () {
                            return _ep.isDropAllowed.apply(_ep, arguments);
                        },
                        reference:referenceEndpoint,
                        isRedrop:function(jpc, dhParams) {
                            return jpc.suspendedEndpoint && dhParams.reference && (jpc.suspendedEndpoint.id === dhParams.reference.id);
                        }
                    });

                dropOptions[dropEvent] = _ju.wrap(dropOptions[dropEvent], drop, true);
                dropOptions[overEvent] = _ju.wrap(dropOptions[overEvent], function () {
                    var draggable = _jp.getDragObject(arguments),
                        id = _jsPlumb.getAttribute(_jp.getElement(draggable), "dragId"),
                        _jpc = _jsPlumb.getFloatingConnectionFor(id);//_jsPlumb.floatingConnections[id];

                    if (_jpc != null) {
                        var idx = _jsPlumb.getFloatingAnchorIndex(_jpc);
                        // here we should fire the 'over' event if we are a target and this is a new connection,
                        // or we are the same as the floating endpoint.
                        var _cont = (this.isTarget && idx !== 0) || (_jpc.suspendedEndpoint && this.referenceEndpoint && this.referenceEndpoint.id === _jpc.suspendedEndpoint.id);
                        if (_cont) {
                            var bb = _jsPlumb.checkCondition("checkDropAllowed", {
                                sourceEndpoint: _jpc.endpoints[idx],
                                targetEndpoint: this,
                                connection: _jpc
                            });
                            this[(bb ? "add" : "remove") + "Class"](_jsPlumb.endpointDropAllowedClass);
                            this[(bb ? "remove" : "add") + "Class"](_jsPlumb.endpointDropForbiddenClass);
                            _jpc.endpoints[idx].anchor.over(this.anchor, this);
                        }
                    }
                }.bind(this));

                dropOptions[outEvent] = _ju.wrap(dropOptions[outEvent], function () {
                    var draggable = _jp.getDragObject(arguments),
                        id = draggable == null ? null : _jsPlumb.getAttribute(_jp.getElement(draggable), "dragId"),
                        _jpc = id ? _jsPlumb.getFloatingConnectionFor(id) : null;

                    if (_jpc != null) {
                        var idx = _jsPlumb.getFloatingAnchorIndex(_jpc);
                        var _cont = (this.isTarget && idx !== 0) || (_jpc.suspendedEndpoint && this.referenceEndpoint && this.referenceEndpoint.id === _jpc.suspendedEndpoint.id);
                        if (_cont) {
                            this.removeClass(_jsPlumb.endpointDropAllowedClass);
                            this.removeClass(_jsPlumb.endpointDropForbiddenClass);
                            _jpc.endpoints[idx].anchor.out();
                        }
                    }
                }.bind(this));

                _jsPlumb.initDroppable(canvas, dropOptions, "internal", isTransient);
            }
        }.bind(this);

        // Initialise the endpoint's canvas as a drop target. The drop handler will take care of the logic of whether
        // something can actually be dropped.
        if (!this.anchor.isFloating) {
            _initDropTarget(this.canvas, !(params._transient || this.anchor.isFloating), this, params.reference);
        }

        return this;
    };

    _ju.extend(_jp.Endpoint, _jp.OverlayCapableJsPlumbUIComponent, {

        setVisible: function (v, doNotChangeConnections, doNotNotifyOtherEndpoint) {
            this._jsPlumb.visible = v;
            if (this.canvas) {
                this.canvas.style.display = v ? "block" : "none";
            }
            this[v ? "showOverlays" : "hideOverlays"]();
            if (!doNotChangeConnections) {
                for (var i = 0; i < this.connections.length; i++) {
                    this.connections[i].setVisible(v);
                    if (!doNotNotifyOtherEndpoint) {
                        var oIdx = this === this.connections[i].endpoints[0] ? 1 : 0;
                        // only change the other endpoint if this is its only connection.
                        if (this.connections[i].endpoints[oIdx].connections.length === 1) {
                            this.connections[i].endpoints[oIdx].setVisible(v, true, true);
                        }
                    }
                }
            }
        },
        getAttachedElements: function () {
            return this.connections;
        },
        applyType: function (t, doNotRepaint) {
            this.setPaintStyle(t.endpointStyle || t.paintStyle, doNotRepaint);
            this.setHoverPaintStyle(t.endpointHoverStyle || t.hoverPaintStyle, doNotRepaint);
            if (t.maxConnections != null) {
                this._jsPlumb.maxConnections = t.maxConnections;
            }
            if (t.scope) {
                this.scope = t.scope;
            }
            _jp.extend(this, t, typeParameters);
            if (t.cssClass != null && this.canvas) {
                this._jsPlumb.instance.addClass(this.canvas, t.cssClass);
            }
            _jp.OverlayCapableJsPlumbUIComponent.applyType(this, t);
        },
        isEnabled: function () {
            return this._jsPlumb.enabled;
        },
        setEnabled: function (e) {
            this._jsPlumb.enabled = e;
        },
        cleanup: function () {
            var anchorClass = this._jsPlumb.instance.endpointAnchorClassPrefix + (this._jsPlumb.currentAnchorClass ? "-" + this._jsPlumb.currentAnchorClass : "");
            _jp.removeClass(this.element, anchorClass);
            this.anchor = null;
            this.endpoint.cleanup(true);
            this.endpoint.destroy();
            this.endpoint = null;
            // drag/drop
            this._jsPlumb.instance.destroyDraggable(this.canvas, "internal");
            this._jsPlumb.instance.destroyDroppable(this.canvas, "internal");
        },
        setHover: function (h) {
            if (this.endpoint && this._jsPlumb && !this._jsPlumb.instance.isConnectionBeingDragged()) {
                this.endpoint.setHover(h);
            }
        },
        isFull: function () {
            return this._jsPlumb.maxConnections === 0 ? true : !(this.isFloating() || this._jsPlumb.maxConnections < 0 || this.connections.length < this._jsPlumb.maxConnections);
        },
        /**
         * private but needs to be exposed.
         */
        isFloating: function () {
            return this.anchor != null && this.anchor.isFloating;
        },
        isConnectedTo: function (endpoint) {
            var found = false;
            if (endpoint) {
                for (var i = 0; i < this.connections.length; i++) {
                    if (this.connections[i].endpoints[1] === endpoint || this.connections[i].endpoints[0] === endpoint) {
                        found = true;
                        break;
                    }
                }
            }
            return found;
        },
        getConnectionCost: function () {
            return this._jsPlumb.connectionCost;
        },
        setConnectionCost: function (c) {
            this._jsPlumb.connectionCost = c;
        },
        areConnectionsDirected: function () {
            return this._jsPlumb.connectionsDirected;
        },
        setConnectionsDirected: function (b) {
            this._jsPlumb.connectionsDirected = b;
        },
        setElementId: function (_elId) {
            this.elementId = _elId;
            this.anchor.elementId = _elId;
        },
        setReferenceElement: function (_el) {
            this.element = _jp.getElement(_el);
        },
        setDragAllowedWhenFull: function (allowed) {
            this.dragAllowedWhenFull = allowed;
        },
        equals: function (endpoint) {
            return this.anchor.equals(endpoint.anchor);
        },
        getUuid: function () {
            return this._jsPlumb.uuid;
        },
        computeAnchor: function (params) {
            return this.anchor.compute(params);
        }
    });

    root.jsPlumbInstance.prototype.EndpointDropHandler = function (dhParams) {
        return function (e) {

            var _jsPlumb = dhParams.jsPlumb;

            // remove the classes that are added dynamically. drop is neither forbidden nor allowed now that
            // the drop is finishing.
            dhParams.removeClass(_jsPlumb.endpointDropAllowedClass);
            dhParams.removeClass(_jsPlumb.endpointDropForbiddenClass);

            var originalEvent = _jsPlumb.getDropEvent(arguments),
                draggable = _jsPlumb.getDragObject(arguments),
                id = _jsPlumb.getAttribute(draggable, "dragId"),
                elId = _jsPlumb.getAttribute(draggable, "elId"),
                scope = _jsPlumb.getAttribute(draggable, "originalScope"),
                jpc = _jsPlumb.getFloatingConnectionFor(id);

            // if no active connection, bail.
            if (jpc == null) {
                return;
            }

            // calculate if this is an existing connection.
            var existingConnection = jpc.suspendedEndpoint != null;

            // if suspended endpoint exists but has been cleaned up, bail. This means it's an existing connection
            // that has been detached and will shortly be discarded.
            if (existingConnection && jpc.suspendedEndpoint._jsPlumb == null) {
                return;
            }

            // get the drop endpoint. for a normal connection this is just the one that would replace the currently
            // floating endpoint. for a makeTarget this is a new endpoint that is created on drop. But we leave that to
            // the handler to figure out.
            var _ep = dhParams.getEndpoint(jpc);

            // If we're not given an endpoint to use, bail.
            if (_ep == null) {
                return;
            }

            // if this is a drop back where the connection came from, mark it force reattach and
            // return; the stop handler will reattach. without firing an event.
            if (dhParams.isRedrop(jpc, dhParams)) {
                jpc._forceReattach = true;
                jpc.setHover(false);
                if (dhParams.maybeCleanup) {
                    dhParams.maybeCleanup(_ep);
                }
                return;
            }

            // ensure we dont bother trying to drop sources on non-source eps, and same for target.
            var idx = _jsPlumb.getFloatingAnchorIndex(jpc);
            if ((idx === 0 && !dhParams.isSource)|| (idx === 1 && !dhParams.isTarget)){
                if (dhParams.maybeCleanup) {
                    dhParams.maybeCleanup(_ep);
                }
                return;
            }

            if (dhParams.onDrop) {
                dhParams.onDrop(jpc);
            }

            // restore the original scope if necessary (issue 57)
            if (scope) {
                _jsPlumb.setDragScope(draggable, scope);
            }

            // if the target of the drop is full, fire an event (we abort below)
            // makeTarget: keep.
            var isFull = dhParams.isFull(e);
            if (isFull) {
                _ep.fire("maxConnections", {
                    endpoint: this,
                    connection: jpc,
                    maxConnections: _ep._jsPlumb.maxConnections
                }, originalEvent);
            }
            //
            // if endpoint enabled, not full, and matches the index of the floating endpoint...
            if (!isFull &&  dhParams.enabled()) {
                var _doContinue = true;

                // before testing for beforeDrop, reset the connection's source/target to be the actual DOM elements
                // involved (that is, stash any temporary stuff used for dragging. but we need to keep it around in
                // order that the anchor manager can clean things up properly).
                if (idx === 0) {
                    jpc.floatingElement = jpc.source;
                    jpc.floatingId = jpc.sourceId;
                    jpc.floatingEndpoint = jpc.endpoints[0];
                    jpc.floatingIndex = 0;
                    jpc.source = dhParams.element;
                    jpc.sourceId = dhParams.elementId;
                } else {
                    jpc.floatingElement = jpc.target;
                    jpc.floatingId = jpc.targetId;
                    jpc.floatingEndpoint = jpc.endpoints[1];
                    jpc.floatingIndex = 1;
                    jpc.target = dhParams.element;
                    jpc.targetId = dhParams.elementId;
                }

                // if this is an existing connection and detach is not allowed we won't continue. The connection's
                // endpoints have been reinstated; everything is back to how it was.
                if (existingConnection && jpc.suspendedEndpoint.id !== _ep.id) {
                    if (!jpc.isDetachAllowed(jpc) || !jpc.endpoints[idx].isDetachAllowed(jpc) || !jpc.suspendedEndpoint.isDetachAllowed(jpc) || !_jsPlumb.checkCondition("beforeDetach", jpc)) {
                        _doContinue = false;
                    }
                }

// ------------ wrap the execution path in a function so we can support asynchronous beforeDrop

                var continueFunction = function (optionalData) {
                    // remove this jpc from the current endpoint, which is a floating endpoint that we will
                    // subsequently discard.
                    jpc.endpoints[idx].detachFromConnection(jpc);

                    // if there's a suspended endpoint, detach it from the connection.
                    if (jpc.suspendedEndpoint) {
                        jpc.suspendedEndpoint.detachFromConnection(jpc);
                    }

                    jpc.endpoints[idx] = _ep;
                    _ep.addConnection(jpc);

                    // copy our parameters in to the connection:
                    var params = _ep.getParameters();
                    for (var aParam in params) {
                        jpc.setParameter(aParam, params[aParam]);
                    }

                    if (!existingConnection) {
                        // if not an existing connection and
                        if (params.draggable) {
                            _jsPlumb.initDraggable(this.element, dhParams.dragOptions, "internal", _jsPlumb);
                        }
                    }
                    else {
                        var suspendedElementId = jpc.suspendedEndpoint.elementId;
                        _jsPlumb.fireMoveEvent({
                            index: idx,
                            originalSourceId: idx === 0 ? suspendedElementId : jpc.sourceId,
                            newSourceId: idx === 0 ? _ep.elementId : jpc.sourceId,
                            originalTargetId: idx === 1 ? suspendedElementId : jpc.targetId,
                            newTargetId: idx === 1 ? _ep.elementId : jpc.targetId,
                            originalSourceEndpoint: idx === 0 ? jpc.suspendedEndpoint : jpc.endpoints[0],
                            newSourceEndpoint: idx === 0 ? _ep : jpc.endpoints[0],
                            originalTargetEndpoint: idx === 1 ? jpc.suspendedEndpoint : jpc.endpoints[1],
                            newTargetEndpoint: idx === 1 ? _ep : jpc.endpoints[1],
                            connection: jpc
                        }, originalEvent);
                    }

                    if (idx === 1) {
                        _jsPlumb.anchorManager.updateOtherEndpoint(jpc.sourceId, jpc.floatingId, jpc.targetId, jpc);
                    }
                    else {
                        _jsPlumb.anchorManager.sourceChanged(jpc.floatingId, jpc.sourceId, jpc, jpc.source);
                    }

                    // when makeSource has uniqueEndpoint:true, we want to create connections with new endpoints
                    // that are subsequently deleted. So makeSource sets `finalEndpoint`, which is the Endpoint to
                    // which the connection should be attached. The `detachFromConnection` call below results in the
                    // temporary endpoint being cleaned up.
                    if (jpc.endpoints[0].finalEndpoint) {
                        var _toDelete = jpc.endpoints[0];
                        _toDelete.detachFromConnection(jpc);
                        jpc.endpoints[0] = jpc.endpoints[0].finalEndpoint;
                        jpc.endpoints[0].addConnection(jpc);
                    }

                    // if optionalData was given, merge it onto the connection's data.
                    if (_ju.isObject(optionalData)) {
                        jpc.mergeData(optionalData);
                    }
                    // finalise will inform the anchor manager and also add to
                    // connectionsByScope if necessary.
                    _jsPlumb.finaliseConnection(jpc, null, originalEvent, false);
                    jpc.setHover(false);

                }.bind(this);

                var dontContinueFunction = function () {
                    // otherwise just put it back on the endpoint it was on before the drag.
                    if (jpc.suspendedEndpoint) {
                        jpc.endpoints[idx] = jpc.suspendedEndpoint;
                        jpc.setHover(false);
                        jpc._forceDetach = true;
                        if (idx === 0) {
                            jpc.source = jpc.suspendedEndpoint.element;
                            jpc.sourceId = jpc.suspendedEndpoint.elementId;
                        } else {
                            jpc.target = jpc.suspendedEndpoint.element;
                            jpc.targetId = jpc.suspendedEndpoint.elementId;
                        }
                        jpc.suspendedEndpoint.addConnection(jpc);

                        // TODO checkSanity
                        if (idx === 1) {
                            _jsPlumb.anchorManager.updateOtherEndpoint(jpc.sourceId, jpc.floatingId, jpc.targetId, jpc);
                        }
                        else {
                            _jsPlumb.anchorManager.sourceChanged(jpc.floatingId, jpc.sourceId, jpc, jpc.source);
                        }

                        _jsPlumb.repaint(jpc.sourceId);
                        jpc._forceDetach = false;
                    }
                };

// --------------------------------------
                // now check beforeDrop.  this will be available only on Endpoints that are setup to
                // have a beforeDrop condition (although, secretly, under the hood all Endpoints and
                // the Connection have them, because they are on jsPlumbUIComponent.  shhh!), because
                // it only makes sense to have it on a target endpoint.
                _doContinue = _doContinue && dhParams.isDropAllowed(jpc.sourceId, jpc.targetId, jpc.scope, jpc, _ep);// && jpc.pending;

                if (_doContinue) {
                    continueFunction(_doContinue);
                    return true;
                }
                else {
                    dontContinueFunction();
                }
            }

            if (dhParams.maybeCleanup) {
                dhParams.maybeCleanup(_ep);
            }

            _jsPlumb.currentlyDragging = false;
        };
    };
}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the code for Connections.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this,
        _jp = root.jsPlumb,
        _ju = root.jsPlumbUtil;

    var makeConnector = function (_jsPlumb, renderMode, connectorName, connectorArgs, forComponent) {
            if (!_jsPlumb.Defaults.DoNotThrowErrors && _jp.Connectors[renderMode][connectorName] == null) {
                throw { msg: "jsPlumb: unknown connector type '" + connectorName + "'" };
            }

            return new _jp.Connectors[renderMode][connectorName](connectorArgs, forComponent);
        },
        _makeAnchor = function (anchorParams, elementId, _jsPlumb) {
            return (anchorParams) ? _jsPlumb.makeAnchor(anchorParams, elementId, _jsPlumb) : null;
        },
        _updateConnectedClass = function (conn, element, _jsPlumb, remove) {
            if (element != null) {
                element._jsPlumbConnections = element._jsPlumbConnections || {};
                if (remove) {
                    delete element._jsPlumbConnections[conn.id];
                }
                else {
                    element._jsPlumbConnections[conn.id] = true;
                }

                if (_ju.isEmpty(element._jsPlumbConnections)) {
                    _jsPlumb.removeClass(element, _jsPlumb.connectedClass);
                }
                else {
                    _jsPlumb.addClass(element, _jsPlumb.connectedClass);
                }
            }
        };

    _jp.Connection = function (params) {
        var _newEndpoint = params.newEndpoint;

        this.id = params.id;
        this.connector = null;
        this.idPrefix = "_jsplumb_c_";
        this.defaultLabelLocation = 0.5;
        this.defaultOverlayKeys = ["Overlays", "ConnectionOverlays"];
        // if a new connection is the result of moving some existing connection, params.previousConnection
        // will have that Connection in it. listeners for the jsPlumbConnection event can look for that
        // member and take action if they need to.
        this.previousConnection = params.previousConnection;
        this.source = _jp.getElement(params.source);
        this.target = _jp.getElement(params.target);


        _jp.OverlayCapableJsPlumbUIComponent.apply(this, arguments);

        // sourceEndpoint and targetEndpoint override source/target, if they are present. but 
        // source is not overridden if the Endpoint has declared it is not the final target of a connection;
        // instead we use the source that the Endpoint declares will be the final source element.
        if (params.sourceEndpoint) {
            this.source = params.sourceEndpoint.getElement();
            this.sourceId = params.sourceEndpoint.elementId;
        } else {
            this.sourceId = this._jsPlumb.instance.getId(this.source);
        }

        if (params.targetEndpoint) {
            this.target = params.targetEndpoint.getElement();
            this.targetId = params.targetEndpoint.elementId;
        } else {
            this.targetId = this._jsPlumb.instance.getId(this.target);
        }


        this.scope = params.scope; // scope may have been passed in to the connect call. if it wasn't, we will pull it from the source endpoint, after having initialised the endpoints.            
        this.endpoints = [];
        this.endpointStyles = [];

        var _jsPlumb = this._jsPlumb.instance;

        _jsPlumb.manage(this.sourceId, this.source);
        _jsPlumb.manage(this.targetId, this.target);

        this._jsPlumb.visible = true;
        this._jsPlumb.editable = params.editable === true;
        this._jsPlumb.params = {
            cssClass: params.cssClass,
            container: params.container,
            "pointer-events": params["pointer-events"],
            editorParams: params.editorParams,
            overlays: params.overlays
        };
        this._jsPlumb.lastPaintedAt = null;

        // listen to mouseover and mouseout events passed from the container delegate.
        this.bind("mouseover", function () {
            this.setHover(true);
        }.bind(this));
        this.bind("mouseout", function () {
            this.setHover(false);
        }.bind(this));

        this.editableRequested = params.editable !== false;
        this.setEditable = function(e) {
            return this.connector ? this.connector.setEditable(e) : false;
        };
        this.isEditable = function() { return this.connector ? this.connector.isEditable() : false; };
        this.isEditing = function() { return this.connector ? this.connector.isEditing() : false; };

// INITIALISATION CODE

        this.makeEndpoint = function (isSource, el, elId, ep) {
            elId = elId || this._jsPlumb.instance.getId(el);
            return this.prepareEndpoint(_jsPlumb, _newEndpoint, this, ep, isSource ? 0 : 1, params, el, elId);
        };

        // if type given, get the endpoint definitions mapping to that type from the jsplumb instance, and use those.
        // we apply types at the end of this constructor but endpoints are only honoured in a type definition at
        // create time.
        if (params.type) {
            params.endpoints = params.endpoints || this._jsPlumb.instance.deriveEndpointAndAnchorSpec(params.type).endpoints;
        }

        var eS = this.makeEndpoint(true, this.source, this.sourceId, params.sourceEndpoint),
            eT = this.makeEndpoint(false, this.target, this.targetId, params.targetEndpoint);

        if (eS) {
            _ju.addToList(params.endpointsByElement, this.sourceId, eS);
        }
        if (eT) {
            _ju.addToList(params.endpointsByElement, this.targetId, eT);
        }
        // if scope not set, set it to be the scope for the source endpoint.
        if (!this.scope) {
            this.scope = this.endpoints[0].scope;
        }

        // if explicitly told to (or not to) delete endpoints when empty, override endpoint's preferences
        if (params.deleteEndpointsOnEmpty != null) {
            this.endpoints[0].setDeleteOnEmpty(params.deleteEndpointsOnEmpty);
            this.endpoints[1].setDeleteOnEmpty(params.deleteEndpointsOnEmpty);
        }

// -------------------------- DEFAULT TYPE ---------------------------------------------

        // DETACHABLE
        var _detachable = _jsPlumb.Defaults.ConnectionsDetachable;
        if (params.detachable === false) {
            _detachable = false;
        }
        if (this.endpoints[0].connectionsDetachable === false) {
            _detachable = false;
        }
        if (this.endpoints[1].connectionsDetachable === false) {
            _detachable = false;
        }
        // REATTACH
        var _reattach = params.reattach || this.endpoints[0].reattachConnections || this.endpoints[1].reattachConnections || _jsPlumb.Defaults.ReattachConnections;

        this.appendToDefaultType({
            detachable: _detachable,
            reattach: _reattach,
            paintStyle:this.endpoints[0].connectorStyle || this.endpoints[1].connectorStyle || params.paintStyle || _jsPlumb.Defaults.PaintStyle || _jp.Defaults.PaintStyle,
            hoverPaintStyle:this.endpoints[0].connectorHoverStyle || this.endpoints[1].connectorHoverStyle || params.hoverPaintStyle || _jsPlumb.Defaults.HoverPaintStyle || _jp.Defaults.HoverPaintStyle
        });

        var _suspendedAt = _jsPlumb.getSuspendedAt();
        if (!_jsPlumb.isSuspendDrawing()) {
            // paint the endpoints
            var myInfo = _jsPlumb.getCachedData(this.sourceId),
                myOffset = myInfo.o, myWH = myInfo.s,
                otherInfo = _jsPlumb.getCachedData(this.targetId),
                otherOffset = otherInfo.o,
                otherWH = otherInfo.s,
                initialTimestamp = _suspendedAt || _jsPlumb.timestamp(),
                anchorLoc = this.endpoints[0].anchor.compute({
                    xy: [ myOffset.left, myOffset.top ], wh: myWH, element: this.endpoints[0],
                    elementId: this.endpoints[0].elementId,
                    txy: [ otherOffset.left, otherOffset.top ], twh: otherWH, tElement: this.endpoints[1],
                    timestamp: initialTimestamp
                });

            this.endpoints[0].paint({ anchorLoc: anchorLoc, timestamp: initialTimestamp });

            anchorLoc = this.endpoints[1].anchor.compute({
                xy: [ otherOffset.left, otherOffset.top ], wh: otherWH, element: this.endpoints[1],
                elementId: this.endpoints[1].elementId,
                txy: [ myOffset.left, myOffset.top ], twh: myWH, tElement: this.endpoints[0],
                timestamp: initialTimestamp
            });
            this.endpoints[1].paint({ anchorLoc: anchorLoc, timestamp: initialTimestamp });
        }

        this.getTypeDescriptor = function () {
            return "connection";
        };
        this.getAttachedElements = function () {
            return this.endpoints;
        };

        this.isDetachable = function () {
            return this._jsPlumb.detachable === true;
        };
        this.setDetachable = function (detachable) {
            this._jsPlumb.detachable = detachable === true;
        };
        this.isReattach = function () {
            return this._jsPlumb.reattach === true || this.endpoints[0].reattachConnections === true || this.endpoints[1].reattachConnections === true;
        };
        this.setReattach = function (reattach) {
            this._jsPlumb.reattach = reattach === true;
        };

// END INITIALISATION CODE


// COST + DIRECTIONALITY
        // if cost not supplied, try to inherit from source endpoint
        this._jsPlumb.cost = params.cost || this.endpoints[0].getConnectionCost();
        this._jsPlumb.directed = params.directed;
        // inherit directed flag if set no source endpoint
        if (params.directed == null) {
            this._jsPlumb.directed = this.endpoints[0].areConnectionsDirected();
        }
// END COST + DIRECTIONALITY

// PARAMETERS
        // merge all the parameters objects into the connection.  parameters set
        // on the connection take precedence; then source endpoint params, then
        // finally target endpoint params.
        var _p = _jp.extend({}, this.endpoints[1].getParameters());
        _jp.extend(_p, this.endpoints[0].getParameters());
        _jp.extend(_p, this.getParameters());
        this.setParameters(_p);
// END PARAMETERS

// PAINTING

        this.setConnector(this.endpoints[0].connector || this.endpoints[1].connector || params.connector || _jsPlumb.Defaults.Connector || _jp.Defaults.Connector, true);
        if (params.geometry) {
            this.connector.setGeometry(params.geometry);
        }
        var data = params.data == null || !_ju.isObject(params.data) ? {} : params.data;
        this.getData = function() { return data; };
        this.setData = function(d) { data = d || {}; };
        this.mergeData = function(d) { data = _jp.extend(data, d); };

        // the very last thing we do is apply types, if there are any.
        var _types = [ "default", this.endpoints[0].connectionType, this.endpoints[1].connectionType,  params.type ].join(" ");
        if (/[^\s]/.test(_types)) {
            this.addType(_types, params.data, true);
        }

        this.updateConnectedClass();

// END PAINTING    
    };

    _ju.extend(_jp.Connection, _jp.OverlayCapableJsPlumbUIComponent, {
        applyType: function (t, doNotRepaint, typeMap) {

            var _connector = null;
            if (t.connector != null) {
                _connector = this.getCachedTypeItem("connector", typeMap.connector);
                if (_connector == null) {
                    _connector = this.prepareConnector(t.connector, typeMap.connector);
                    this.cacheTypeItem("connector", _connector, typeMap.connector);
                }
                this.setPreparedConnector(_connector);
            }

            // none of these things result in the creation of objects so can be ignored.
            if (t.detachable != null) {
                this.setDetachable(t.detachable);
            }
            if (t.reattach != null) {
                this.setReattach(t.reattach);
            }
            if (t.scope) {
                this.scope = t.scope;
            }

            if (t.cssClass != null && this.canvas) {
                this._jsPlumb.instance.addClass(this.canvas, t.cssClass);
            }

            var _anchors = null;
            // this also results in the creation of objects.
            if (t.anchor) {
                // note that even if the param was anchor, we store `anchors`.
                _anchors = this.getCachedTypeItem("anchors", typeMap.anchor);
                if (_anchors == null) {
                    _anchors = [ this._jsPlumb.instance.makeAnchor(t.anchor), this._jsPlumb.instance.makeAnchor(t.anchor) ];
                    this.cacheTypeItem("anchors", _anchors, typeMap.anchor);
                }
            }
            else if (t.anchors) {
                _anchors = this.getCachedTypeItem("anchors", typeMap.anchors);
                if (_anchors == null) {
                    _anchors = [
                        this._jsPlumb.instance.makeAnchor(t.anchors[0]),
                        this._jsPlumb.instance.makeAnchor(t.anchors[1])
                    ];
                    this.cacheTypeItem("anchors", _anchors, typeMap.anchors);
                }
            }
            if (_anchors != null) {
                this.endpoints[0].anchor = _anchors[0];
                this.endpoints[1].anchor = _anchors[1];
                if (this.endpoints[1].anchor.isDynamic) {
                    this._jsPlumb.instance.repaint(this.endpoints[1].elementId);
                }
            }

            _jp.OverlayCapableJsPlumbUIComponent.applyType(this, t);
        },
        addClass: function (c, informEndpoints) {
            if (informEndpoints) {
                this.endpoints[0].addClass(c);
                this.endpoints[1].addClass(c);
                if (this.suspendedEndpoint) {
                    this.suspendedEndpoint.addClass(c);
                }
            }
            if (this.connector) {
                this.connector.addClass(c);
            }
        },
        removeClass: function (c, informEndpoints) {
            if (informEndpoints) {
                this.endpoints[0].removeClass(c);
                this.endpoints[1].removeClass(c);
                if (this.suspendedEndpoint) {
                    this.suspendedEndpoint.removeClass(c);
                }
            }
            if (this.connector) {
                this.connector.removeClass(c);
            }
        },
        isVisible: function () {
            return this._jsPlumb.visible;
        },
        setVisible: function (v) {
            this._jsPlumb.visible = v;
            if (this.connector) {
                this.connector.setVisible(v);
            }
            this.repaint();
        },
        cleanup: function () {
            this.updateConnectedClass(true);
            this.endpoints = null;
            this.source = null;
            this.target = null;
            if (this.connector != null) {
                this.connector.cleanup(true);
                this.connector.destroy(true);
            }
            this.connector = null;
        },
        updateConnectedClass:function(remove) {
            if (this._jsPlumb) {
                _updateConnectedClass(this, this.source, this._jsPlumb.instance, remove);
                _updateConnectedClass(this, this.target, this._jsPlumb.instance, remove);
            }
        },
        setHover: function (state) {
            if (this.connector && this._jsPlumb && !this._jsPlumb.instance.isConnectionBeingDragged()) {
                this.connector.setHover(state);
                root.jsPlumb[state ? "addClass" : "removeClass"](this.source, this._jsPlumb.instance.hoverSourceClass);
                root.jsPlumb[state ? "addClass" : "removeClass"](this.target, this._jsPlumb.instance.hoverTargetClass);
            }
        },
        getUuids:function() {
            return [ this.endpoints[0].getUuid(), this.endpoints[1].getUuid() ];
        },
        getCost: function () {
            return this._jsPlumb ? this._jsPlumb.cost : -Infinity;
        },
        setCost: function (c) {
            this._jsPlumb.cost = c;
        },
        isDirected: function () {
            return this._jsPlumb.directed;
        },
        getConnector: function () {
            return this.connector;
        },
        getGeometry : function() {
            return this.connector ? this.connector.getGeometry() : null;
        },
        setGeometry : function(g) {
            if (this.connector) {
                this.connector.setGeometry(g);
            }
        },
        prepareConnector:function(connectorSpec, typeId) {
            var connectorArgs = {
                    _jsPlumb: this._jsPlumb.instance,
                    cssClass: (this._jsPlumb.params.cssClass || "") + (this.isEditable() ? this._jsPlumb.instance.editableConnectorClass : ""),
                    container: this._jsPlumb.params.container,
                    "pointer-events": this._jsPlumb.params["pointer-events"],
                    editable:this.editableRequested
                },
                renderMode = this._jsPlumb.instance.getRenderMode(),
                connector;

            if (_ju.isString(connectorSpec)) {
                connector = makeConnector(this._jsPlumb.instance, renderMode, connectorSpec, connectorArgs, this);
            } // lets you use a string as shorthand.
            else if (_ju.isArray(connectorSpec)) {
                if (connectorSpec.length === 1) {
                    connector = makeConnector(this._jsPlumb.instance, renderMode, connectorSpec[0], connectorArgs, this);
                }
                else {
                    connector = makeConnector(this._jsPlumb.instance, renderMode, connectorSpec[0], _ju.merge(connectorSpec[1], connectorArgs), this);
                }
            }
            if (typeId != null) {
                connector.typeId = typeId;
            }
            return connector;
        },
        setPreparedConnector: function(connector, doNotRepaint, doNotChangeListenerComponent, typeId) {

            if (this.connector !== connector) {

                var previous, previousClasses = "";
                // the connector will not be cleaned up if it was set as part of a type, because `typeId` will be set on it
                // and we havent passed in `true` for "force" here.
                if (this.connector != null) {
                    previous = this.connector;
                    previousClasses = previous.getClass();
                    this.connector.cleanup();
                    this.connector.destroy();
                }

                this.connector = connector;
                if (typeId) {
                    this.cacheTypeItem("connector", connector, typeId);
                }

                this.canvas = this.connector.canvas;
                this.bgCanvas = this.connector.bgCanvas;

                // put classes from prior connector onto the canvas
                this.addClass(previousClasses);

                // new: instead of binding listeners per connector, we now just have one delegate on the container.
                // so for that handler we set the connection as the '_jsPlumb' member of the canvas element, and
                // bgCanvas, if it exists, which it does right now in the VML renderer, so it won't from v 2.0.0 onwards.
                if (this.canvas) {
                    this.canvas._jsPlumb = this;
                }
                if (this.bgCanvas) {
                    this.bgCanvas._jsPlumb = this;
                }

                if (previous != null) {
                    var o = this.getOverlays();
                    for (var i = 0; i < o.length; i++) {
                        if (o[i].transfer) {
                            o[i].transfer(this.connector);
                        }
                    }
                }

                if (!doNotChangeListenerComponent) {
                    this.setListenerComponent(this.connector);
                }
                if (!doNotRepaint) {
                    this.repaint();
                }
            }
        },
        setConnector: function (connectorSpec, doNotRepaint, doNotChangeListenerComponent, typeId) {
            var connector = this.prepareConnector(connectorSpec, typeId);
            this.setPreparedConnector(connector, doNotRepaint, doNotChangeListenerComponent, typeId);
        },
        paint: function (params) {

            if (!this._jsPlumb.instance.isSuspendDrawing() && this._jsPlumb.visible) {
                params = params || {};
                var timestamp = params.timestamp,
                // if the moving object is not the source we must transpose the two references.
                    swap = false,
                    tId = swap ? this.sourceId : this.targetId, sId = swap ? this.targetId : this.sourceId,
                    tIdx = swap ? 0 : 1, sIdx = swap ? 1 : 0;

                if (timestamp == null || timestamp !== this._jsPlumb.lastPaintedAt) {
                    var sourceInfo = this._jsPlumb.instance.updateOffset({elId:sId}).o,
                        targetInfo = this._jsPlumb.instance.updateOffset({elId:tId}).o,
                        sE = this.endpoints[sIdx], tE = this.endpoints[tIdx];

                    var sAnchorP = sE.anchor.getCurrentLocation({xy: [sourceInfo.left, sourceInfo.top], wh: [sourceInfo.width, sourceInfo.height], element: sE, timestamp: timestamp}),
                        tAnchorP = tE.anchor.getCurrentLocation({xy: [targetInfo.left, targetInfo.top], wh: [targetInfo.width, targetInfo.height], element: tE, timestamp: timestamp});

                    this.connector.resetBounds();

                    this.connector.compute({
                        sourcePos: sAnchorP,
                        targetPos: tAnchorP,
                        sourceEndpoint: this.endpoints[sIdx],
                        targetEndpoint: this.endpoints[tIdx],
                        "stroke-width": this._jsPlumb.paintStyleInUse.strokeWidth,
                        sourceInfo: sourceInfo,
                        targetInfo: targetInfo
                    });

                    var overlayExtents = { minX: Infinity, minY: Infinity, maxX: -Infinity, maxY: -Infinity };

                    // compute overlays. we do this first so we can get their placements, and adjust the
                    // container if needs be (if an overlay would be clipped)
                    for (var i in this._jsPlumb.overlays) {
                        if (this._jsPlumb.overlays.hasOwnProperty(i)) {
                            var o = this._jsPlumb.overlays[i];
                            if (o.isVisible()) {
                                this._jsPlumb.overlayPlacements[i] = o.draw(this.connector, this._jsPlumb.paintStyleInUse, this.getAbsoluteOverlayPosition(o));
                                overlayExtents.minX = Math.min(overlayExtents.minX, this._jsPlumb.overlayPlacements[i].minX);
                                overlayExtents.maxX = Math.max(overlayExtents.maxX, this._jsPlumb.overlayPlacements[i].maxX);
                                overlayExtents.minY = Math.min(overlayExtents.minY, this._jsPlumb.overlayPlacements[i].minY);
                                overlayExtents.maxY = Math.max(overlayExtents.maxY, this._jsPlumb.overlayPlacements[i].maxY);
                            }
                        }
                    }

                    var lineWidth = parseFloat(this._jsPlumb.paintStyleInUse.strokeWidth || 1) / 2,
                        outlineWidth = parseFloat(this._jsPlumb.paintStyleInUse.strokeWidth || 0),
                        extents = {
                            xmin: Math.min(this.connector.bounds.minX - (lineWidth + outlineWidth), overlayExtents.minX),
                            ymin: Math.min(this.connector.bounds.minY - (lineWidth + outlineWidth), overlayExtents.minY),
                            xmax: Math.max(this.connector.bounds.maxX + (lineWidth + outlineWidth), overlayExtents.maxX),
                            ymax: Math.max(this.connector.bounds.maxY + (lineWidth + outlineWidth), overlayExtents.maxY)
                        };
                    // paint the connector.
                    this.connector.paint(this._jsPlumb.paintStyleInUse, null, extents);
                    // and then the overlays
                    for (var j in this._jsPlumb.overlays) {
                        if (this._jsPlumb.overlays.hasOwnProperty(j)) {
                            var p = this._jsPlumb.overlays[j];
                            if (p.isVisible()) {
                                p.paint(this._jsPlumb.overlayPlacements[j], extents);
                            }
                        }
                    }
                }
                this._jsPlumb.lastPaintedAt = timestamp;
            }
        },
        repaint: function (params) {
            params = params || {};
            this.paint({ elId: this.sourceId, recalc: !(params.recalc === false), timestamp: params.timestamp});
        },
        prepareEndpoint: function (_jsPlumb, _newEndpoint, conn, existing, index, params, element, elementId) {
            var e;
            if (existing) {
                conn.endpoints[index] = existing;
                existing.addConnection(conn);
            } else {
                if (!params.endpoints) {
                    params.endpoints = [ null, null ];
                }
                var ep = params.endpoints[index] || params.endpoint || _jsPlumb.Defaults.Endpoints[index] || _jp.Defaults.Endpoints[index] || _jsPlumb.Defaults.Endpoint || _jp.Defaults.Endpoint;
                if (!params.endpointStyles) {
                    params.endpointStyles = [ null, null ];
                }
                if (!params.endpointHoverStyles) {
                    params.endpointHoverStyles = [ null, null ];
                }
                var es = params.endpointStyles[index] || params.endpointStyle || _jsPlumb.Defaults.EndpointStyles[index] || _jp.Defaults.EndpointStyles[index] || _jsPlumb.Defaults.EndpointStyle || _jp.Defaults.EndpointStyle;
                // Endpoints derive their fill from the connector's stroke, if no fill was specified.
                if (es.fill == null && params.paintStyle != null) {
                    es.fill = params.paintStyle.stroke;
                }

                if (es.outlineStroke == null && params.paintStyle != null) {
                    es.outlineStroke = params.paintStyle.outlineStroke;
                }
                if (es.outlineWidth == null && params.paintStyle != null) {
                    es.outlineWidth = params.paintStyle.outlineWidth;
                }

                var ehs = params.endpointHoverStyles[index] || params.endpointHoverStyle || _jsPlumb.Defaults.EndpointHoverStyles[index] || _jp.Defaults.EndpointHoverStyles[index] || _jsPlumb.Defaults.EndpointHoverStyle || _jp.Defaults.EndpointHoverStyle;
                // endpoint hover fill style is derived from connector's hover stroke style
                if (params.hoverPaintStyle != null) {
                    if (ehs == null) {
                        ehs = {};
                    }
                    if (ehs.fill == null) {
                        ehs.fill = params.hoverPaintStyle.stroke;
                    }
                }
                var a = params.anchors ? params.anchors[index] :
                        params.anchor ? params.anchor :
                            _makeAnchor(_jsPlumb.Defaults.Anchors[index], elementId, _jsPlumb) ||
                            _makeAnchor(_jp.Defaults.Anchors[index], elementId, _jsPlumb) ||
                            _makeAnchor(_jsPlumb.Defaults.Anchor, elementId, _jsPlumb) ||
                            _makeAnchor(_jp.Defaults.Anchor, elementId, _jsPlumb),
                    u = params.uuids ? params.uuids[index] : null;

                e = _newEndpoint({
                    paintStyle: es, hoverPaintStyle: ehs, endpoint: ep, connections: [ conn ],
                    uuid: u, anchor: a, source: element, scope: params.scope,
                    reattach: params.reattach || _jsPlumb.Defaults.ReattachConnections,
                    detachable: params.detachable || _jsPlumb.Defaults.ConnectionsDetachable
                });
                if (existing == null) {
                    e.setDeleteOnEmpty(true);
                }
                conn.endpoints[index] = e;

                if (params.drawEndpoints === false) {
                    e.setVisible(false, true, true);
                }

            }
            return e;
        }

    }); // END Connection class            
}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the code for creating and manipulating anchors.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";

    var root = this,
        _ju = root.jsPlumbUtil,
        _jp = root.jsPlumb;

    //
    // manages anchors for all elements.
    //
    _jp.AnchorManager = function (params) {
        var _amEndpoints = {},
            continuousAnchorLocations = {},
            userDefinedContinuousAnchorLocations = {},
            continuousAnchorOrientations = {},
            Orientation = { HORIZONTAL: "horizontal", VERTICAL: "vertical", DIAGONAL: "diagonal", IDENTITY: "identity" },
            axes = ["left", "top", "right", "bottom"],
            connectionsByElementId = {},
            self = this,
            anchorLists = {},
            jsPlumbInstance = params.jsPlumbInstance,
            floatingConnections = {},
            calculateOrientation = function (sourceId, targetId, sd, td, sourceAnchor, targetAnchor) {

                if (sourceId === targetId) {
                    return {
                        orientation: Orientation.IDENTITY,
                        a: ["top", "top"]
                    };
                }

                var theta = Math.atan2((td.centery - sd.centery), (td.centerx - sd.centerx)),
                    theta2 = Math.atan2((sd.centery - td.centery), (sd.centerx - td.centerx));

// --------------------------------------------------------------------------------------

                // improved face calculation. get midpoints of each face for source and target, then put in an array with all combinations of
                // source/target faces. sort this array by distance between midpoints. the entry at index 0 is our preferred option. we can
                // go through the array one by one until we find an entry in which each requested face is supported.
                var candidates = [], midpoints = { };
                (function (types, dim) {
                    for (var i = 0; i < types.length; i++) {
                        midpoints[types[i]] = {
                            "left": [ dim[i].left, dim[i].centery ],
                            "right": [ dim[i].right, dim[i].centery ],
                            "top": [ dim[i].centerx, dim[i].top ],
                            "bottom": [ dim[i].centerx , dim[i].bottom]
                        };
                    }
                })([ "source", "target" ], [ sd, td ]);

                for (var sf = 0; sf < axes.length; sf++) {
                    for (var tf = 0; tf < axes.length; tf++) {
                        candidates.push({
                            source: axes[sf],
                            target: axes[tf],
                            dist: Biltong.lineLength(midpoints.source[axes[sf]], midpoints.target[axes[tf]])
                        });
                    }
                }

                candidates.sort(function (a, b) {
                    return a.dist < b.dist ? -1 : a.dist > b.dist ? 1 : 0;
                });

                // now go through this list and try to get an entry that satisfies both (there will be one, unless one of the anchors
                // declares no available faces)
                var sourceEdge = candidates[0].source, targetEdge = candidates[0].target;
                for (var i = 0; i < candidates.length; i++) {

                    if (!sourceAnchor.isContinuous || sourceAnchor.isEdgeSupported(candidates[i].source)) {
                        sourceEdge = candidates[i].source;
                    }
                    else {
                        sourceEdge = null;
                    }

                    if (!targetAnchor.isContinuous || targetAnchor.isEdgeSupported(candidates[i].target)) {
                        targetEdge = candidates[i].target;
                    }
                    else {
                        targetEdge = null;
                    }

                    if (sourceEdge != null && targetEdge != null) {
                        break;
                    }
                }

                if (sourceAnchor.isContinuous) {
                    sourceAnchor.setCurrentFace(sourceEdge);
                }

                if (targetAnchor.isContinuous) {
                    targetAnchor.setCurrentFace(targetEdge);
                }

// --------------------------------------------------------------------------------------

                return {
                    a: [ sourceEdge, targetEdge ],
                    theta: theta,
                    theta2: theta2
                };
            },
        // used by placeAnchors function
            placeAnchorsOnLine = function (desc, elementDimensions, elementPosition, connections, horizontal, otherMultiplier, reverse) {
                var a = [], step = elementDimensions[horizontal ? 0 : 1] / (connections.length + 1);

                for (var i = 0; i < connections.length; i++) {
                    var val = (i + 1) * step, other = otherMultiplier * elementDimensions[horizontal ? 1 : 0];
                    if (reverse) {
                        val = elementDimensions[horizontal ? 0 : 1] - val;
                    }

                    var dx = (horizontal ? val : other), x = elementPosition[0] + dx, xp = dx / elementDimensions[0],
                        dy = (horizontal ? other : val), y = elementPosition[1] + dy, yp = dy / elementDimensions[1];

                    a.push([ x, y, xp, yp, connections[i][1], connections[i][2] ]);
                }

                return a;
            },
        // used by edgeSortFunctions
            currySort = function (reverseAngles) {
                return function (a, b) {
                    var r = true;
                    if (reverseAngles) {
                        r = a[0][0] < b[0][0];
                    }
                    else {
                        r = a[0][0] > b[0][0];
                    }
                    return r === false ? -1 : 1;
                };
            },
        // used by edgeSortFunctions
            leftSort = function (a, b) {
                // first get adjusted values
                var p1 = a[0][0] < 0 ? -Math.PI - a[0][0] : Math.PI - a[0][0],
                    p2 = b[0][0] < 0 ? -Math.PI - b[0][0] : Math.PI - b[0][0];
                if (p1 > p2) {
                    return 1;
                }
                else {
                    return -1;
                }
            },
        // used by placeAnchors
            edgeSortFunctions = {
                "top": function (a, b) {
                    return a[0] > b[0] ? 1 : -1;
                },
                "right": currySort(true),
                "bottom": currySort(true),
                "left": leftSort
            },
        // used by placeAnchors
            _sortHelper = function (_array, _fn) {
                return _array.sort(_fn);
            },
        // used by AnchorManager.redraw
            placeAnchors = function (elementId, _anchorLists) {
                var cd = jsPlumbInstance.getCachedData(elementId), sS = cd.s, sO = cd.o,
                    placeSomeAnchors = function (desc, elementDimensions, elementPosition, unsortedConnections, isHorizontal, otherMultiplier, orientation) {
                        if (unsortedConnections.length > 0) {
                            var sc = _sortHelper(unsortedConnections, edgeSortFunctions[desc]), // puts them in order based on the target element's pos on screen
                                reverse = desc === "right" || desc === "top",
                                anchors = placeAnchorsOnLine(desc, elementDimensions,
                                    elementPosition, sc,
                                    isHorizontal, otherMultiplier, reverse);

                            // takes a computed anchor position and adjusts it for parent offset and scroll, then stores it.
                            var _setAnchorLocation = function (endpoint, anchorPos) {
                                continuousAnchorLocations[endpoint.id] = [ anchorPos[0], anchorPos[1], anchorPos[2], anchorPos[3] ];
                                continuousAnchorOrientations[endpoint.id] = orientation;
                            };

                            for (var i = 0; i < anchors.length; i++) {
                                var c = anchors[i][4], weAreSource = c.endpoints[0].elementId === elementId, weAreTarget = c.endpoints[1].elementId === elementId;
                                if (weAreSource) {
                                    _setAnchorLocation(c.endpoints[0], anchors[i]);
                                }
                                if (weAreTarget) {
                                    _setAnchorLocation(c.endpoints[1], anchors[i]);
                                }
                            }
                        }
                    };

                placeSomeAnchors("bottom", sS, [sO.left, sO.top], _anchorLists.bottom, true, 1, [0, 1]);
                placeSomeAnchors("top", sS, [sO.left, sO.top], _anchorLists.top, true, 0, [0, -1]);
                placeSomeAnchors("left", sS, [sO.left, sO.top], _anchorLists.left, false, 0, [-1, 0]);
                placeSomeAnchors("right", sS, [sO.left, sO.top], _anchorLists.right, false, 1, [1, 0]);
            };

        this.reset = function () {
            _amEndpoints = {};
            connectionsByElementId = {};
            anchorLists = {};
        };
        this.addFloatingConnection = function (key, conn) {
            floatingConnections[key] = conn;
        };
        this.removeFloatingConnection = function (key) {
            delete floatingConnections[key];
        };
        this.newConnection = function (conn) {
            var sourceId = conn.sourceId, targetId = conn.targetId,
                ep = conn.endpoints,
                doRegisterTarget = true,
                registerConnection = function (otherIndex, otherEndpoint, otherAnchor, elId, c) {
                    if ((sourceId === targetId) && otherAnchor.isContinuous) {
                        // remove the target endpoint's canvas.  we dont need it.
                        conn._jsPlumb.instance.removeElement(ep[1].canvas);
                        doRegisterTarget = false;
                    }
                    _ju.addToList(connectionsByElementId, elId, [c, otherEndpoint, otherAnchor.constructor === _jp.DynamicAnchor]);
                };

            registerConnection(0, ep[0], ep[0].anchor, targetId, conn);
            if (doRegisterTarget) {
                registerConnection(1, ep[1], ep[1].anchor, sourceId, conn);
            }
        };
        var removeEndpointFromAnchorLists = function (endpoint) {
            (function (list, eId) {
                if (list) {  // transient anchors dont get entries in this list.
                    var f = function (e) {
                        return e[4] === eId;
                    };
                    _ju.removeWithFunction(list.top, f);
                    _ju.removeWithFunction(list.left, f);
                    _ju.removeWithFunction(list.bottom, f);
                    _ju.removeWithFunction(list.right, f);
                }
            })(anchorLists[endpoint.elementId], endpoint.id);
        };
        this.connectionDetached = function (connInfo, doNotRedraw) {
            var connection = connInfo.connection || connInfo,
                sourceId = connInfo.sourceId,
                targetId = connInfo.targetId,
                ep = connection.endpoints,
                removeConnection = function (otherIndex, otherEndpoint, otherAnchor, elId, c) {
                   _ju.removeWithFunction(connectionsByElementId[elId], function (_c) {
                        return _c[0].id === c.id;
                    });
                };

            removeConnection(1, ep[1], ep[1].anchor, sourceId, connection);
            removeConnection(0, ep[0], ep[0].anchor, targetId, connection);
            if (connection.floatingId) {
                removeConnection(connection.floatingIndex, connection.floatingEndpoint, connection.floatingEndpoint.anchor, connection.floatingId, connection);
                removeEndpointFromAnchorLists(connection.floatingEndpoint);
            }

            // remove from anchorLists            
            removeEndpointFromAnchorLists(connection.endpoints[0]);
            removeEndpointFromAnchorLists(connection.endpoints[1]);

            if (!doNotRedraw) {
                self.redraw(connection.sourceId);
                if (connection.targetId !== connection.sourceId) {
                    self.redraw(connection.targetId);
                }
            }
        };
        this.add = function (endpoint, elementId) {
            _ju.addToList(_amEndpoints, elementId, endpoint);
        };
        this.changeId = function (oldId, newId) {
            connectionsByElementId[newId] = connectionsByElementId[oldId];
            _amEndpoints[newId] = _amEndpoints[oldId];
            delete connectionsByElementId[oldId];
            delete _amEndpoints[oldId];
        };
        this.getConnectionsFor = function (elementId) {
            return connectionsByElementId[elementId] || [];
        };
        this.getEndpointsFor = function (elementId) {
            return _amEndpoints[elementId] || [];
        };
        this.deleteEndpoint = function (endpoint) {
            _ju.removeWithFunction(_amEndpoints[endpoint.elementId], function (e) {
                return e.id === endpoint.id;
            });
            removeEndpointFromAnchorLists(endpoint);
        };
        this.clearFor = function (elementId) {
            delete _amEndpoints[elementId];
            _amEndpoints[elementId] = [];
        };
        // updates the given anchor list by either updating an existing anchor's info, or adding it. this function
        // also removes the anchor from its previous list, if the edge it is on has changed.
        // all connections found along the way (those that are connected to one of the faces this function
        // operates on) are added to the connsToPaint list, as are their endpoints. in this way we know to repaint
        // them wthout having to calculate anything else about them.
        var _updateAnchorList = function (lists, theta, order, conn, aBoolean, otherElId, idx, reverse, edgeId, elId, connsToPaint, endpointsToPaint) {
            // first try to find the exact match, but keep track of the first index of a matching element id along the way.s
            var exactIdx = -1,
                firstMatchingElIdx = -1,
                endpoint = conn.endpoints[idx],
                endpointId = endpoint.id,
                oIdx = [1, 0][idx],
                values = [
                    [ theta, order ],
                    conn,
                    aBoolean,
                    otherElId,
                    endpointId
                ],
                listToAddTo = lists[edgeId],
                listToRemoveFrom = endpoint._continuousAnchorEdge ? lists[endpoint._continuousAnchorEdge] : null,
                i,
                candidate;

            if (listToRemoveFrom) {
                var rIdx = _ju.findWithFunction(listToRemoveFrom, function (e) {
                    return e[4] === endpointId;
                });
                if (rIdx !== -1) {
                    listToRemoveFrom.splice(rIdx, 1);
                    // get all connections from this list
                    for (i = 0; i < listToRemoveFrom.length; i++) {
                        candidate = listToRemoveFrom[i][1];
                        _ju.addWithFunction(connsToPaint, candidate, function (c) {
                            return c.id === candidate.id;
                        });
                        _ju.addWithFunction(endpointsToPaint, listToRemoveFrom[i][1].endpoints[idx], function (e) {
                            return e.id === candidate.endpoints[idx].id;
                        });
                        _ju.addWithFunction(endpointsToPaint, listToRemoveFrom[i][1].endpoints[oIdx], function (e) {
                            return e.id === candidate.endpoints[oIdx].id;
                        });
                    }
                }
            }

            for (i = 0; i < listToAddTo.length; i++) {
                candidate = listToAddTo[i][1];
                if (params.idx === 1 && listToAddTo[i][3] === otherElId && firstMatchingElIdx === -1) {
                    firstMatchingElIdx = i;
                }
                _ju.addWithFunction(connsToPaint, candidate, function (c) {
                    return c.id === candidate.id;
                });
                _ju.addWithFunction(endpointsToPaint, listToAddTo[i][1].endpoints[idx], function (e) {
                    return e.id === candidate.endpoints[idx].id;
                });
                _ju.addWithFunction(endpointsToPaint, listToAddTo[i][1].endpoints[oIdx], function (e) {
                    return e.id === candidate.endpoints[oIdx].id;
                });
            }
            if (exactIdx !== -1) {
                listToAddTo[exactIdx] = values;
            }
            else {
                var insertIdx = reverse ? firstMatchingElIdx !== -1 ? firstMatchingElIdx : 0 : listToAddTo.length; // of course we will get this from having looked through the array shortly.
                listToAddTo.splice(insertIdx, 0, values);
            }

            // store this for next time.
            endpoint._continuousAnchorEdge = edgeId;
        };

        //
        // find the entry in an endpoint's list for this connection and update its target endpoint
        // with the current target in the connection.
        // This method and sourceChanged need to be folder into one.
        //
        this.updateOtherEndpoint = function (sourceElId, oldTargetId, newTargetId, connection) {
            var sIndex = _ju.findWithFunction(connectionsByElementId[sourceElId], function (i) {
                    return i[0].id === connection.id;
                }),
                tIndex = _ju.findWithFunction(connectionsByElementId[oldTargetId], function (i) {
                    return i[0].id === connection.id;
                });

            // update or add data for source
            if (sIndex !== -1) {
                connectionsByElementId[sourceElId][sIndex][0] = connection;
                connectionsByElementId[sourceElId][sIndex][1] = connection.endpoints[1];
                connectionsByElementId[sourceElId][sIndex][2] = connection.endpoints[1].anchor.constructor === _jp.DynamicAnchor;
            }

            // remove entry for previous target (if there)
            if (tIndex > -1) {
                connectionsByElementId[oldTargetId].splice(tIndex, 1);
                // add entry for new target
                _ju.addToList(connectionsByElementId, newTargetId, [connection, connection.endpoints[0], connection.endpoints[0].anchor.constructor === _jp.DynamicAnchor]);
            }

            connection.updateConnectedClass();
        };

        //
        // notification that the connection given has changed source from the originalId to the newId.
        // This involves:
        // 1. removing the connection from the list of connections stored for the originalId
        // 2. updating the source information for the target of the connection
        // 3. re-registering the connection in connectionsByElementId with the newId
        //
        this.sourceChanged = function (originalId, newId, connection, newElement) {
            if (originalId !== newId) {

                connection.sourceId = newId;
                connection.source = newElement;

                // remove the entry that points from the old source to the target
                _ju.removeWithFunction(connectionsByElementId[originalId], function (info) {
                    return info[0].id === connection.id;
                });
                // find entry for target and update it
                var tIdx = _ju.findWithFunction(connectionsByElementId[connection.targetId], function (i) {
                    return i[0].id === connection.id;
                });
                if (tIdx > -1) {
                    connectionsByElementId[connection.targetId][tIdx][0] = connection;
                    connectionsByElementId[connection.targetId][tIdx][1] = connection.endpoints[0];
                    connectionsByElementId[connection.targetId][tIdx][2] = connection.endpoints[0].anchor.constructor === _jp.DynamicAnchor;
                }
                // add entry for new source
                _ju.addToList(connectionsByElementId, newId, [connection, connection.endpoints[1], connection.endpoints[1].anchor.constructor === _jp.DynamicAnchor]);

                // TODO SP not final on this yet. when a user drags an existing connection and it turns into a self
                // loop, then this code hides the target endpoint (by removing it from the DOM) But I think this should
                // occur only if the anchor is Continuous
                if (connection.endpoints[1].anchor.isContinuous) {
                    if (connection.source === connection.target) {
                        connection._jsPlumb.instance.removeElement(connection.endpoints[1].canvas);
                    }
                    else {
                        if (connection.endpoints[1].canvas.parentNode == null) {
                            connection._jsPlumb.instance.appendElement(connection.endpoints[1].canvas);
                        }
                    }
                }

                connection.updateConnectedClass();
            }
        };

        //
        // moves the given endpoint from `currentId` to `element`.
        // This involves:
        //
        // 1. changing the key in _amEndpoints under which the endpoint is stored
        // 2. changing the source or target values in all of the endpoint's connections
        // 3. changing the array in connectionsByElementId in which the endpoint's connections
        //    are stored (done by either sourceChanged or updateOtherEndpoint)
        //
        this.rehomeEndpoint = function (ep, currentId, element) {
            var eps = _amEndpoints[currentId] || [],
                elementId = jsPlumbInstance.getId(element);

            if (elementId !== currentId) {
                var idx = eps.indexOf(ep);
                if (idx > -1) {
                    var _ep = eps.splice(idx, 1)[0];
                    self.add(_ep, elementId);
                }
            }

            for (var i = 0; i < ep.connections.length; i++) {
                if (ep.connections[i].sourceId === currentId) {
                    self.sourceChanged(currentId, ep.elementId, ep.connections[i], ep.element);
                }
                else if (ep.connections[i].targetId === currentId) {
                    ep.connections[i].targetId = ep.elementId;
                    ep.connections[i].target = ep.element;
                    self.updateOtherEndpoint(ep.connections[i].sourceId, currentId, ep.elementId, ep.connections[i]);
                }
            }
        };

        this.redraw = function (elementId, ui, timestamp, offsetToUI, clearEdits, doNotRecalcEndpoint) {

            if (!jsPlumbInstance.isSuspendDrawing()) {
                // get all the endpoints for this element
                var ep = _amEndpoints[elementId] || [],
                    endpointConnections = connectionsByElementId[elementId] || [],
                    connectionsToPaint = [],
                    endpointsToPaint = [],
                    anchorsToUpdate = [];

                timestamp = timestamp || jsPlumbInstance.timestamp();
                // offsetToUI are values that would have been calculated in the dragManager when registering
                // an endpoint for an element that had a parent (somewhere in the hierarchy) that had been
                // registered as draggable.
                offsetToUI = offsetToUI || {left: 0, top: 0};
                if (ui) {
                    ui = {
                        left: ui.left + offsetToUI.left,
                        top: ui.top + offsetToUI.top
                    };
                }

                // valid for one paint cycle.
                var myOffset = jsPlumbInstance.updateOffset({ elId: elementId, offset: ui, recalc: false, timestamp: timestamp }),
                    orientationCache = {};

                // actually, first we should compute the orientation of this element to all other elements to which
                // this element is connected with a continuous anchor (whether both ends of the connection have
                // a continuous anchor or just one)

                for (var i = 0; i < endpointConnections.length; i++) {
                    var conn = endpointConnections[i][0],
                        sourceId = conn.sourceId,
                        targetId = conn.targetId,
                        sourceContinuous = conn.endpoints[0].anchor.isContinuous,
                        targetContinuous = conn.endpoints[1].anchor.isContinuous;

                    if (sourceContinuous || targetContinuous) {
                        var oKey = sourceId + "_" + targetId,
                            o = orientationCache[oKey],
                            oIdx = conn.sourceId === elementId ? 1 : 0;

                        if (sourceContinuous && !anchorLists[sourceId]) {
                            anchorLists[sourceId] = { top: [], right: [], bottom: [], left: [] };
                        }
                        if (targetContinuous && !anchorLists[targetId]) {
                            anchorLists[targetId] = { top: [], right: [], bottom: [], left: [] };
                        }

                        if (elementId !== targetId) {
                            jsPlumbInstance.updateOffset({ elId: targetId, timestamp: timestamp });
                        }
                        if (elementId !== sourceId) {
                            jsPlumbInstance.updateOffset({ elId: sourceId, timestamp: timestamp });
                        }

                        var td = jsPlumbInstance.getCachedData(targetId),
                            sd = jsPlumbInstance.getCachedData(sourceId);

                        if (targetId === sourceId && (sourceContinuous || targetContinuous)) {
                            // here we may want to improve this by somehow determining the face we'd like
                            // to put the connector on.  ideally, when drawing, the face should be calculated
                            // by determining which face is closest to the point at which the mouse button
                            // was released.  for now, we're putting it on the top face.
                            _updateAnchorList( anchorLists[sourceId], -Math.PI / 2, 0, conn, false, targetId, 0, false, "top", sourceId, connectionsToPaint, endpointsToPaint);
                            _updateAnchorList( anchorLists[targetId], -Math.PI / 2, 0, conn, false, sourceId, 1, false, "top", targetId, connectionsToPaint, endpointsToPaint);
                        }
                        else {
                            if (!o) {
                                o = calculateOrientation(sourceId, targetId, sd.o, td.o, conn.endpoints[0].anchor, conn.endpoints[1].anchor);
                                orientationCache[oKey] = o;
                                // this would be a performance enhancement, but the computed angles need to be clamped to
                                //the (-PI/2 -> PI/2) range in order for the sorting to work properly.
                                /*  orientationCache[oKey2] = {
                                 orientation:o.orientation,
                                 a:[o.a[1], o.a[0]],
                                 theta:o.theta + Math.PI,
                                 theta2:o.theta2 + Math.PI
                                 };*/
                            }
                            if (sourceContinuous) {
                                _updateAnchorList(anchorLists[sourceId], o.theta, 0, conn, false, targetId, 0, false, o.a[0], sourceId, connectionsToPaint, endpointsToPaint);
                            }
                            if (targetContinuous) {
                                _updateAnchorList(anchorLists[targetId], o.theta2, -1, conn, true, sourceId, 1, true, o.a[1], targetId, connectionsToPaint, endpointsToPaint);
                            }
                        }

                        if (sourceContinuous) {
                            _ju.addWithFunction(anchorsToUpdate, sourceId, function (a) {
                                return a === sourceId;
                            });
                        }
                        if (targetContinuous) {
                            _ju.addWithFunction(anchorsToUpdate, targetId, function (a) {
                                return a === targetId;
                            });
                        }
                        _ju.addWithFunction(connectionsToPaint, conn, function (c) {
                            return c.id === conn.id;
                        });
                        if ((sourceContinuous && oIdx === 0) || (targetContinuous && oIdx === 1)) {
                            _ju.addWithFunction(endpointsToPaint, conn.endpoints[oIdx], function (e) {
                                return e.id === conn.endpoints[oIdx].id;
                            });
                        }
                    }
                }

                // place Endpoints whose anchors are continuous but have no Connections
                for (i = 0; i < ep.length; i++) {
                    if (ep[i].connections.length === 0 && ep[i].anchor.isContinuous) {
                        if (!anchorLists[elementId]) {
                            anchorLists[elementId] = { top: [], right: [], bottom: [], left: [] };
                        }
                        _updateAnchorList(anchorLists[elementId], -Math.PI / 2, 0, {endpoints: [ep[i], ep[i]], paint: function () {
                        }}, false, elementId, 0, false, ep[i].anchor.getDefaultFace(), elementId, connectionsToPaint, endpointsToPaint);
                        _ju.addWithFunction(anchorsToUpdate, elementId, function (a) {
                            return a === elementId;
                        });
                    }
                }

                // now place all the continuous anchors we need to;
                for (i = 0; i < anchorsToUpdate.length; i++) {
                    placeAnchors(anchorsToUpdate[i], anchorLists[anchorsToUpdate[i]]);
                }

                // now that continuous anchors have been placed, paint all the endpoints for this element
                // TODO performance: add the endpoint ids to a temp array, and then when iterating in the next
                // loop, check that we didn't just paint that endpoint. we can probably shave off a few more milliseconds this way.
                for (i = 0; i < ep.length; i++) {
                    ep[i].paint({ timestamp: timestamp, offset: myOffset, dimensions: myOffset.s, recalc: doNotRecalcEndpoint !== true });
                }

                // ... and any other endpoints we came across as a result of the continuous anchors.
                for (i = 0; i < endpointsToPaint.length; i++) {
                    var cd = jsPlumbInstance.getCachedData(endpointsToPaint[i].elementId);
                    endpointsToPaint[i].paint({ timestamp: timestamp, offset: cd, dimensions: cd.s });
                }

                // paint all the standard and "dynamic connections", which are connections whose other anchor is
                // static and therefore does need to be recomputed; we make sure that happens only one time.

                // TODO we could have compiled a list of these in the first pass through connections; might save some time.
                for (i = 0; i < endpointConnections.length; i++) {
                    var otherEndpoint = endpointConnections[i][1];
                    if (otherEndpoint.anchor.constructor === _jp.DynamicAnchor) {
                        otherEndpoint.paint({ elementWithPrecedence: elementId, timestamp: timestamp });
                        _ju.addWithFunction(connectionsToPaint, endpointConnections[i][0], function (c) {
                            return c.id === endpointConnections[i][0].id;
                        });
                        // all the connections for the other endpoint now need to be repainted
                        for (var k = 0; k < otherEndpoint.connections.length; k++) {
                            if (otherEndpoint.connections[k] !== endpointConnections[i][0]) {
                                _ju.addWithFunction(connectionsToPaint, otherEndpoint.connections[k], function (c) {
                                    return c.id === otherEndpoint.connections[k].id;
                                });
                            }
                        }
                    } else {
                        _ju.addWithFunction(connectionsToPaint, endpointConnections[i][0], function (c) {
                            return c.id === endpointConnections[i][0].id;
                        });
                    }
                }

                // paint current floating connection for this element, if there is one.
                var fc = floatingConnections[elementId];
                if (fc) {
                    fc.paint({timestamp: timestamp, recalc: false, elId: elementId});
                }

                // paint all the connections
                for (i = 0; i < connectionsToPaint.length; i++) {
                    connectionsToPaint[i].paint({elId: elementId, timestamp: timestamp, recalc: false, clearEdits: clearEdits});
                }
            }
        };

        var ContinuousAnchor = function (anchorParams) {
            _ju.EventGenerator.apply(this);
            this.type = "Continuous";
            this.isDynamic = true;
            this.isContinuous = true;
            var faces = anchorParams.faces || ["top", "right", "bottom", "left"],
                clockwise = !(anchorParams.clockwise === false),
                availableFaces = { },
                opposites = { "top": "bottom", "right": "left", "left": "right", "bottom": "top" },
                clockwiseOptions = { "top": "right", "right": "bottom", "left": "top", "bottom": "left" },
                antiClockwiseOptions = { "top": "left", "right": "top", "left": "bottom", "bottom": "right" },
                secondBest = clockwise ? clockwiseOptions : antiClockwiseOptions,
                lastChoice = clockwise ? antiClockwiseOptions : clockwiseOptions,
                cssClass = anchorParams.cssClass || "",
                _currentFace = null, _lockedFace = null, X_AXIS_FACES = ["left", "right"], Y_AXIS_FACES = ["top", "bottom"],
                _lockedAxis = null;

            for (var i = 0; i < faces.length; i++) {
                availableFaces[faces[i]] = true;
            }

            this.getDefaultFace = function () {
                return faces.length === 0 ? "top" : faces[0];
            };

            // if the given edge is supported, returns it. otherwise looks for a substitute that _is_
            // supported. if none supported we also return the request edge.
            this.verifyEdge = function (edge) {
                if (availableFaces[edge]) {
                    return edge;
                }
                else if (availableFaces[opposites[edge]]) {
                    return opposites[edge];
                }
                else if (availableFaces[secondBest[edge]]) {
                    return secondBest[edge];
                }
                else if (availableFaces[lastChoice[edge]]) {
                    return lastChoice[edge];
                }
                return edge; // we have to give them something.
            };

            this.isEdgeSupported = function (edge) {
                return  _lockedAxis == null ?

                            (_lockedFace == null ? availableFaces[edge] === true : _lockedFace === edge)

                        : _lockedAxis.indexOf(edge) !== -1;
            };

            this.setCurrentFace = function(face) {
                _currentFace = face;
            };

            this.getCurrentFace = function() { return _currentFace; };

            this.lockCurrentFace = function() {
                _lockedFace = _currentFace;
            };

            this.unlockCurrentFace = function() { _lockedFace = null; };

            this.lockCurrentAxis = function() {
                if (_currentFace != null) {
                    _lockedAxis = (_currentFace === "left" || _currentFace === "right") ? X_AXIS_FACES : Y_AXIS_FACES;
                }
            };

            this.unlockCurrentAxis = function() {
                _lockedAxis = null;
            };

            this.compute = function (params) {
                return userDefinedContinuousAnchorLocations[params.element.id] || continuousAnchorLocations[params.element.id] || [0, 0];
            };
            this.getCurrentLocation = function (params) {
                return userDefinedContinuousAnchorLocations[params.element.id] || continuousAnchorLocations[params.element.id] || [0, 0];
            };
            this.getOrientation = function (endpoint) {
                return continuousAnchorOrientations[endpoint.id] || [0, 0];
            };
            this.clearUserDefinedLocation = function () {
                delete userDefinedContinuousAnchorLocations[anchorParams.elementId];
            };
            this.setUserDefinedLocation = function (loc) {
                userDefinedContinuousAnchorLocations[anchorParams.elementId] = loc;
            };
            this.getCssClass = function () {
                return cssClass;
            };
        };

        // continuous anchors
        jsPlumbInstance.continuousAnchorFactory = {
            get: function (params) {
                return new ContinuousAnchor(params);
            },
            clear: function (elementId) {
                delete userDefinedContinuousAnchorLocations[elementId];
                delete continuousAnchorLocations[elementId];
            }
        };
    };

    /**
     * Anchors model a position on some element at which an Endpoint may be located.  They began as a first class citizen of jsPlumb, ie. a user
     * was required to create these themselves, but over time this has been replaced by the concept of referring to them either by name (eg. "TopMiddle"),
     * or by an array describing their coordinates (eg. [ 0, 0.5, 0, -1 ], which is the same as "TopMiddle").  jsPlumb now handles all of the
     * creation of Anchors without user intervention.
     */
    _jp.Anchor = function (params) {
        this.x = params.x || 0;
        this.y = params.y || 0;
        this.elementId = params.elementId;
        this.cssClass = params.cssClass || "";
        this.userDefinedLocation = null;
        this.orientation = params.orientation || [ 0, 0 ];
        this.lastReturnValue = null;
        this.offsets = params.offsets || [ 0, 0 ];
        this.timestamp = null;

        _ju.EventGenerator.apply(this);

        this.compute = function (params) {

            var xy = params.xy, wh = params.wh, timestamp = params.timestamp;

            if (params.clearUserDefinedLocation) {
                this.userDefinedLocation = null;
            }

            if (timestamp && timestamp === this.timestamp) {
                return this.lastReturnValue;
            }

            if (this.userDefinedLocation != null) {
                this.lastReturnValue = this.userDefinedLocation;
            }
            else {
                this.lastReturnValue = [ xy[0] + (this.x * wh[0]) + this.offsets[0], xy[1] + (this.y * wh[1]) + this.offsets[1] ];
            }

            this.timestamp = timestamp;
            return this.lastReturnValue;
        };

        this.getCurrentLocation = function (params) {
            params = params || {};
            return (this.lastReturnValue == null || (params.timestamp != null && this.timestamp !== params.timestamp)) ? this.compute(params) : this.lastReturnValue;
        };
    };
    _ju.extend(_jp.Anchor, _ju.EventGenerator, {
        equals: function (anchor) {
            if (!anchor) {
                return false;
            }
            var ao = anchor.getOrientation(),
                o = this.getOrientation();
            return this.x === anchor.x && this.y === anchor.y && this.offsets[0] === anchor.offsets[0] && this.offsets[1] === anchor.offsets[1] && o[0] === ao[0] && o[1] === ao[1];
        },
        getUserDefinedLocation: function () {
            return this.userDefinedLocation;
        },
        setUserDefinedLocation: function (l) {
            this.userDefinedLocation = l;
        },
        clearUserDefinedLocation: function () {
            this.userDefinedLocation = null;
        },
        getOrientation: function () {
            return this.orientation;
        },
        getCssClass: function () {
            return this.cssClass;
        }
    });

    /**
     * An Anchor that floats. its orientation is computed dynamically from
     * its position relative to the anchor it is floating relative to.  It is used when creating
     * a connection through drag and drop.
     *
     * TODO FloatingAnchor could totally be refactored to extend Anchor just slightly.
     */
    _jp.FloatingAnchor = function (params) {

        _jp.Anchor.apply(this, arguments);

        // this is the anchor that this floating anchor is referenced to for
        // purposes of calculating the orientation.
        var ref = params.reference,
            // the canvas this refers to.
            refCanvas = params.referenceCanvas,
            size = _jp.getSize(refCanvas),
            // these are used to store the current relative position of our
            // anchor wrt the reference anchor. they only indicate
            // direction, so have a value of 1 or -1 (or, very rarely, 0). these
            // values are written by the compute method, and read
            // by the getOrientation method.
            xDir = 0, yDir = 0,
            // temporary member used to store an orientation when the floating
            // anchor is hovering over another anchor.
            orientation = null,
            _lastResult = null;

        // clear from parent. we want floating anchor orientation to always be computed.
        this.orientation = null;

        // set these to 0 each; they are used by certain types of connectors in the loopback case,
        // when the connector is trying to clear the element it is on. but for floating anchor it's not
        // very important.
        this.x = 0;
        this.y = 0;

        this.isFloating = true;

        this.compute = function (params) {
            var xy = params.xy,
                result = [ xy[0] + (size[0] / 2), xy[1] + (size[1] / 2) ]; // return origin of the element. we may wish to improve this so that any object can be the drag proxy.
            _lastResult = result;
            return result;
        };

        this.getOrientation = function (_endpoint) {
            if (orientation) {
                return orientation;
            }
            else {
                var o = ref.getOrientation(_endpoint);
                // here we take into account the orientation of the other
                // anchor: if it declares zero for some direction, we declare zero too. this might not be the most awesome. perhaps we can come
                // up with a better way. it's just so that the line we draw looks like it makes sense. maybe this wont make sense.
                return [ Math.abs(o[0]) * xDir * -1,
                        Math.abs(o[1]) * yDir * -1 ];
            }
        };

        /**
         * notification the endpoint associated with this anchor is hovering
         * over another anchor; we want to assume that anchor's orientation
         * for the duration of the hover.
         */
        this.over = function (anchor, endpoint) {
            orientation = anchor.getOrientation(endpoint);
        };

        /**
         * notification the endpoint associated with this anchor is no
         * longer hovering over another anchor; we should resume calculating
         * orientation as we normally do.
         */
        this.out = function () {
            orientation = null;
        };

        this.getCurrentLocation = function (params) {
            return _lastResult == null ? this.compute(params) : _lastResult;
        };
    };
    _ju.extend(_jp.FloatingAnchor, _jp.Anchor);

    var _convertAnchor = function (anchor, jsPlumbInstance, elementId) {
        return anchor.constructor === _jp.Anchor ? anchor : jsPlumbInstance.makeAnchor(anchor, elementId, jsPlumbInstance);
    };

    /* 
     * A DynamicAnchor is an Anchor that contains a list of other Anchors, which it cycles
     * through at compute time to find the one that is located closest to
     * the center of the target element, and returns that Anchor's compute
     * method result. this causes endpoints to follow each other with
     * respect to the orientation of their target elements, which is a useful
     * feature for some applications.
     * 
     */
    _jp.DynamicAnchor = function (params) {
        _jp.Anchor.apply(this, arguments);

        this.isDynamic = true;
        this.anchors = [];
        this.elementId = params.elementId;
        this.jsPlumbInstance = params.jsPlumbInstance;

        for (var i = 0; i < params.anchors.length; i++) {
            this.anchors[i] = _convertAnchor(params.anchors[i], this.jsPlumbInstance, this.elementId);
        }

        this.getAnchors = function () {
            return this.anchors;
        };
        this.locked = false;
        var _curAnchor = this.anchors.length > 0 ? this.anchors[0] : null,
            _lastAnchor = _curAnchor,
            self = this,

        // helper method to calculate the distance between the centers of the two elements.
            _distance = function (anchor, cx, cy, xy, wh) {
                var ax = xy[0] + (anchor.x * wh[0]), ay = xy[1] + (anchor.y * wh[1]),
                    acx = xy[0] + (wh[0] / 2), acy = xy[1] + (wh[1] / 2);
                return (Math.sqrt(Math.pow(cx - ax, 2) + Math.pow(cy - ay, 2)) +
                    Math.sqrt(Math.pow(acx - ax, 2) + Math.pow(acy - ay, 2)));
            },
        // default method uses distance between element centers.  you can provide your own method in the dynamic anchor
        // constructor (and also to jsPlumb.makeDynamicAnchor). the arguments to it are four arrays:
        // xy - xy loc of the anchor's element
        // wh - anchor's element's dimensions
        // txy - xy loc of the element of the other anchor in the connection
        // twh - dimensions of the element of the other anchor in the connection.
        // anchors - the list of selectable anchors
            _anchorSelector = params.selector || function (xy, wh, txy, twh, anchors) {
                var cx = txy[0] + (twh[0] / 2), cy = txy[1] + (twh[1] / 2);
                var minIdx = -1, minDist = Infinity;
                for (var i = 0; i < anchors.length; i++) {
                    var d = _distance(anchors[i], cx, cy, xy, wh);
                    if (d < minDist) {
                        minIdx = i + 0;
                        minDist = d;
                    }
                }
                return anchors[minIdx];
            };

        this.compute = function (params) {
            var xy = params.xy, wh = params.wh, txy = params.txy, twh = params.twh;

            this.timestamp = params.timestamp;

            var udl = self.getUserDefinedLocation();
            if (udl != null) {
                return udl;
            }

            // if anchor is locked or an opposite element was not given, we
            // maintain our state. anchor will be locked
            // if it is the source of a drag and drop.
            if (this.locked || txy == null || twh == null) {
                return _curAnchor.compute(params);
            }
            else {
                params.timestamp = null; // otherwise clear this, i think. we want the anchor to compute.
            }

            _curAnchor = _anchorSelector(xy, wh, txy, twh, this.anchors);
            this.x = _curAnchor.x;
            this.y = _curAnchor.y;

            if (_curAnchor !== _lastAnchor) {
                this.fire("anchorChanged", _curAnchor);
            }

            _lastAnchor = _curAnchor;

            return _curAnchor.compute(params);
        };

        this.getCurrentLocation = function (params) {
            return this.getUserDefinedLocation() || (_curAnchor != null ? _curAnchor.getCurrentLocation(params) : null);
        };

        this.getOrientation = function (_endpoint) {
            return _curAnchor != null ? _curAnchor.getOrientation(_endpoint) : [ 0, 0 ];
        };
        this.over = function (anchor, endpoint) {
            if (_curAnchor != null) {
                _curAnchor.over(anchor, endpoint);
            }
        };
        this.out = function () {
            if (_curAnchor != null) {
                _curAnchor.out();
            }
        };

        this.getCssClass = function () {
            return (_curAnchor && _curAnchor.getCssClass()) || "";
        };
    };
    _ju.extend(_jp.DynamicAnchor, _jp.Anchor);

// -------- basic anchors ------------------    
    var _curryAnchor = function (x, y, ox, oy, type, fnInit) {
        _jp.Anchors[type] = function (params) {
            var a = params.jsPlumbInstance.makeAnchor([ x, y, ox, oy, 0, 0 ], params.elementId, params.jsPlumbInstance);
            a.type = type;
            if (fnInit) {
                fnInit(a, params);
            }
            return a;
        };
    };

    _curryAnchor(0.5, 0, 0, -1, "TopCenter");
    _curryAnchor(0.5, 1, 0, 1, "BottomCenter");
    _curryAnchor(0, 0.5, -1, 0, "LeftMiddle");
    _curryAnchor(1, 0.5, 1, 0, "RightMiddle");

    _curryAnchor(0.5, 0, 0, -1, "Top");
    _curryAnchor(0.5, 1, 0, 1, "Bottom");
    _curryAnchor(0, 0.5, -1, 0, "Left");
    _curryAnchor(1, 0.5, 1, 0, "Right");
    _curryAnchor(0.5, 0.5, 0, 0, "Center");
    _curryAnchor(1, 0, 0, -1, "TopRight");
    _curryAnchor(1, 1, 0, 1, "BottomRight");
    _curryAnchor(0, 0, 0, -1, "TopLeft");
    _curryAnchor(0, 1, 0, 1, "BottomLeft");

// ------- dynamic anchors -------------------    

    // default dynamic anchors chooses from Top, Right, Bottom, Left
    _jp.Defaults.DynamicAnchors = function (params) {
        return params.jsPlumbInstance.makeAnchors(["TopCenter", "RightMiddle", "BottomCenter", "LeftMiddle"], params.elementId, params.jsPlumbInstance);
    };

    // default dynamic anchors bound to name 'AutoDefault'
    _jp.Anchors.AutoDefault = function (params) {
        var a = params.jsPlumbInstance.makeDynamicAnchor(_jp.Defaults.DynamicAnchors(params));
        a.type = "AutoDefault";
        return a;
    };

// ------- continuous anchors -------------------    

    var _curryContinuousAnchor = function (type, faces) {
        _jp.Anchors[type] = function (params) {
            var a = params.jsPlumbInstance.makeAnchor(["Continuous", { faces: faces }], params.elementId, params.jsPlumbInstance);
            a.type = type;
            return a;
        };
    };

    _jp.Anchors.Continuous = function (params) {
        return params.jsPlumbInstance.continuousAnchorFactory.get(params);
    };

    _curryContinuousAnchor("ContinuousLeft", ["left"]);
    _curryContinuousAnchor("ContinuousTop", ["top"]);
    _curryContinuousAnchor("ContinuousBottom", ["bottom"]);
    _curryContinuousAnchor("ContinuousRight", ["right"]);

// ------- position assign anchors -------------------    

    // this anchor type lets you assign the position at connection time.
    _curryAnchor(0, 0, 0, 0, "Assign", function (anchor, params) {
        // find what to use as the "position finder". the user may have supplied a String which represents
        // the id of a position finder in jsPlumb.AnchorPositionFinders, or the user may have supplied the
        // position finder as a function.  we find out what to use and then set it on the anchor.
        var pf = params.position || "Fixed";
        anchor.positionFinder = pf.constructor === String ? params.jsPlumbInstance.AnchorPositionFinders[pf] : pf;
        // always set the constructor params; the position finder might need them later (the Grid one does,
        // for example)
        anchor.constructorParams = params;
    });

    // these are the default anchor positions finders, which are used by the makeTarget function.  supplying
    // a position finder argument to that function allows you to specify where the resulting anchor will
    // be located
    root.jsPlumbInstance.prototype.AnchorPositionFinders = {
        "Fixed": function (dp, ep, es) {
            return [ (dp.left - ep.left) / es[0], (dp.top - ep.top) / es[1] ];
        },
        "Grid": function (dp, ep, es, params) {
            var dx = dp.left - ep.left, dy = dp.top - ep.top,
                gx = es[0] / (params.grid[0]), gy = es[1] / (params.grid[1]),
                mx = Math.floor(dx / gx), my = Math.floor(dy / gy);
            return [ ((mx * gx) + (gx / 2)) / es[0], ((my * gy) + (gy / 2)) / es[1] ];
        }
    };

// ------- perimeter anchors -------------------    

    _jp.Anchors.Perimeter = function (params) {
        params = params || {};
        var anchorCount = params.anchorCount || 60,
            shape = params.shape;

        if (!shape) {
            throw new Error("no shape supplied to Perimeter Anchor type");
        }

        var _circle = function () {
                var r = 0.5, step = Math.PI * 2 / anchorCount, current = 0, a = [];
                for (var i = 0; i < anchorCount; i++) {
                    var x = r + (r * Math.sin(current)),
                        y = r + (r * Math.cos(current));
                    a.push([ x, y, 0, 0 ]);
                    current += step;
                }
                return a;
            },
            _path = function (segments) {
                var anchorsPerFace = anchorCount / segments.length, a = [],
                    _computeFace = function (x1, y1, x2, y2, fractionalLength) {
                        anchorsPerFace = anchorCount * fractionalLength;
                        var dx = (x2 - x1) / anchorsPerFace, dy = (y2 - y1) / anchorsPerFace;
                        for (var i = 0; i < anchorsPerFace; i++) {
                            a.push([
                                    x1 + (dx * i),
                                    y1 + (dy * i),
                                0,
                                0
                            ]);
                        }
                    };

                for (var i = 0; i < segments.length; i++) {
                    _computeFace.apply(null, segments[i]);
                }

                return a;
            },
            _shape = function (faces) {
                var s = [];
                for (var i = 0; i < faces.length; i++) {
                    s.push([faces[i][0], faces[i][1], faces[i][2], faces[i][3], 1 / faces.length]);
                }
                return _path(s);
            },
            _rectangle = function () {
                return _shape([
                    [ 0, 0, 1, 0 ],
                    [ 1, 0, 1, 1 ],
                    [ 1, 1, 0, 1 ],
                    [ 0, 1, 0, 0 ]
                ]);
            };

        var _shapes = {
                "Circle": _circle,
                "Ellipse": _circle,
                "Diamond": function () {
                    return _shape([
                        [ 0.5, 0, 1, 0.5 ],
                        [ 1, 0.5, 0.5, 1 ],
                        [ 0.5, 1, 0, 0.5 ],
                        [ 0, 0.5, 0.5, 0 ]
                    ]);
                },
                "Rectangle": _rectangle,
                "Square": _rectangle,
                "Triangle": function () {
                    return _shape([
                        [ 0.5, 0, 1, 1 ],
                        [ 1, 1, 0, 1 ],
                        [ 0, 1, 0.5, 0]
                    ]);
                },
                "Path": function (params) {
                    var points = params.points, p = [], tl = 0;
                    for (var i = 0; i < points.length - 1; i++) {
                        var l = Math.sqrt(Math.pow(points[i][2] - points[i][0]) + Math.pow(points[i][3] - points[i][1]));
                        tl += l;
                        p.push([points[i][0], points[i][1], points[i + 1][0], points[i + 1][1], l]);
                    }
                    for (var j = 0; j < p.length; j++) {
                        p[j][4] = p[j][4] / tl;
                    }
                    return _path(p);
                }
            },
            _rotate = function (points, amountInDegrees) {
                var o = [], theta = amountInDegrees / 180 * Math.PI;
                for (var i = 0; i < points.length; i++) {
                    var _x = points[i][0] - 0.5,
                        _y = points[i][1] - 0.5;

                    o.push([
                            0.5 + ((_x * Math.cos(theta)) - (_y * Math.sin(theta))),
                            0.5 + ((_x * Math.sin(theta)) + (_y * Math.cos(theta))),
                        points[i][2],
                        points[i][3]
                    ]);
                }
                return o;
            };

        if (!_shapes[shape]) {
            throw new Error("Shape [" + shape + "] is unknown by Perimeter Anchor type");
        }

        var da = _shapes[shape](params);
        if (params.rotation) {
            da = _rotate(da, params.rotation);
        }
        var a = params.jsPlumbInstance.makeDynamicAnchor(da);
        a.type = "Perimeter";
        return a;
    };
}).call(typeof window !== 'undefined' ? window : this);
/*
 * This file contains the default Connectors, Endpoint and Overlay definitions.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 * 
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 * 
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil, _jg = root.Biltong;

    _jp.Segments = {

        /*
         * Class: AbstractSegment
         * A Connector is made up of 1..N Segments, each of which has a Type, such as 'Straight', 'Arc',
         * 'Bezier'. This is new from 1.4.2, and gives us a lot more flexibility when drawing connections: things such
         * as rounded corners for flowchart connectors, for example, or a straight line stub for Bezier connections, are
         * much easier to do now.
         *
         * A Segment is responsible for providing coordinates for painting it, and also must be able to report its length.
         * 
         */
        AbstractSegment: function (params) {
            this.params = params;

            /**
             * Function: findClosestPointOnPath
             * Finds the closest point on this segment to the given [x, y],
             * returning both the x and y of the point plus its distance from
             * the supplied point, and its location along the length of the
             * path inscribed by the segment.  This implementation returns
             * Infinity for distance and null values for everything else;
             * subclasses are expected to override.
             */
            this.findClosestPointOnPath = function (x, y) {
                return {
                    d: Infinity,
                    x: null,
                    y: null,
                    l: null
                };
            };

            this.getBounds = function () {
                return {
                    minX: Math.min(params.x1, params.x2),
                    minY: Math.min(params.y1, params.y2),
                    maxX: Math.max(params.x1, params.x2),
                    maxY: Math.max(params.y1, params.y2)
                };
            };
        },
        Straight: function (params) {
            var _super = _jp.Segments.AbstractSegment.apply(this, arguments),
                length, m, m2, x1, x2, y1, y2,
                _recalc = function () {
                    length = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));
                    m = _jg.gradient({x: x1, y: y1}, {x: x2, y: y2});
                    m2 = -1 / m;
                };

            this.type = "Straight";

            this.getLength = function () {
                return length;
            };
            this.getGradient = function () {
                return m;
            };

            this.getCoordinates = function () {
                return { x1: x1, y1: y1, x2: x2, y2: y2 };
            };
            this.setCoordinates = function (coords) {
                x1 = coords.x1;
                y1 = coords.y1;
                x2 = coords.x2;
                y2 = coords.y2;
                _recalc();
            };
            this.setCoordinates({x1: params.x1, y1: params.y1, x2: params.x2, y2: params.y2});

            this.getBounds = function () {
                return {
                    minX: Math.min(x1, x2),
                    minY: Math.min(y1, y2),
                    maxX: Math.max(x1, x2),
                    maxY: Math.max(y1, y2)
                };
            };

            /**
             * returns the point on the segment's path that is 'location' along the length of the path, where 'location' is a decimal from
             * 0 to 1 inclusive. for the straight line segment this is simple maths.
             */
            this.pointOnPath = function (location, absolute) {
                if (location === 0 && !absolute) {
                    return { x: x1, y: y1 };
                }
                else if (location === 1 && !absolute) {
                    return { x: x2, y: y2 };
                }
                else {
                    var l = absolute ? location > 0 ? location : length + location : location * length;
                    return _jg.pointOnLine({x: x1, y: y1}, {x: x2, y: y2}, l);
                }
            };

            /**
             * returns the gradient of the segment at the given point - which for us is constant.
             */
            this.gradientAtPoint = function (_) {
                return m;
            };

            /**
             * returns the point on the segment's path that is 'distance' along the length of the path from 'location', where
             * 'location' is a decimal from 0 to 1 inclusive, and 'distance' is a number of pixels.
             * this hands off to jsPlumbUtil to do the maths, supplying two points and the distance.
             */
            this.pointAlongPathFrom = function (location, distance, absolute) {
                var p = this.pointOnPath(location, absolute),
                    farAwayPoint = distance <= 0 ? {x: x1, y: y1} : {x: x2, y: y2 };

                /*
                 location == 1 ? {
                 x:x1 + ((x2 - x1) * 10),
                 y:y1 + ((y1 - y2) * 10)
                 } :
                 */

                if (distance <= 0 && Math.abs(distance) > 1) {
                    distance *= -1;
                }

                return _jg.pointOnLine(p, farAwayPoint, distance);
            };

            // is c between a and b?
            var within = function (a, b, c) {
                return c >= Math.min(a, b) && c <= Math.max(a, b);
            };
            // find which of a and b is closest to c
            var closest = function (a, b, c) {
                return Math.abs(c - a) < Math.abs(c - b) ? a : b;
            };

            /**
             Function: findClosestPointOnPath
             Finds the closest point on this segment to [x,y]. See
             notes on this method in AbstractSegment.
             */
            this.findClosestPointOnPath = function (x, y) {
                var out = {
                    d: Infinity,
                    x: null,
                    y: null,
                    l: null,
                    x1: x1,
                    x2: x2,
                    y1: y1,
                    y2: y2
                };

                if (m === 0) {
                    out.y = y1;
                    out.x = within(x1, x2, x) ? x : closest(x1, x2, x);
                }
                else if (m === Infinity || m === -Infinity) {
                    out.x = x1;
                    out.y = within(y1, y2, y) ? y : closest(y1, y2, y);
                }
                else {
                    // closest point lies on normal from given point to this line.  
                    var b = y1 - (m * x1),
                        b2 = y - (m2 * x),
                    // y1 = m.x1 + b and y1 = m2.x1 + b2
                    // so m.x1 + b = m2.x1 + b2
                    // x1(m - m2) = b2 - b
                    // x1 = (b2 - b) / (m - m2)
                        _x1 = (b2 - b) / (m - m2),
                        _y1 = (m * _x1) + b;

                    out.x = within(x1, x2, _x1) ? _x1 : closest(x1, x2, _x1);//_x1;
                    out.y = within(y1, y2, _y1) ? _y1 : closest(y1, y2, _y1);//_y1;
                }

                var fractionInSegment = _jg.lineLength([ out.x, out.y ], [ x1, y1 ]);
                out.d = _jg.lineLength([x, y], [out.x, out.y]);
                out.l = fractionInSegment / length;
                return out;
            };
        },

        /*
         Arc Segment. You need to supply:

         r   -   radius
         cx  -   center x for the arc
         cy  -   center y for the arc
         ac  -   whether the arc is anticlockwise or not. default is clockwise.

         and then either:

         startAngle  -   startAngle for the arc.
         endAngle    -   endAngle for the arc.

         or:

         x1          -   x for start point
         y1          -   y for start point
         x2          -   x for end point
         y2          -   y for end point

         */
        Arc: function (params) {
            var _super = _jp.Segments.AbstractSegment.apply(this, arguments),
                _calcAngle = function (_x, _y) {
                    return _jg.theta([params.cx, params.cy], [_x, _y]);
                },
                _calcAngleForLocation = function (segment, location) {
                    if (segment.anticlockwise) {
                        var sa = segment.startAngle < segment.endAngle ? segment.startAngle + TWO_PI : segment.startAngle,
                            s = Math.abs(sa - segment.endAngle);
                        return sa - (s * location);
                    }
                    else {
                        var ea = segment.endAngle < segment.startAngle ? segment.endAngle + TWO_PI : segment.endAngle,
                            ss = Math.abs(ea - segment.startAngle);

                        return segment.startAngle + (ss * location);
                    }
                },
                TWO_PI = 2 * Math.PI;

            this.radius = params.r;
            this.anticlockwise = params.ac;
            this.type = "Arc";

            if (params.startAngle && params.endAngle) {
                this.startAngle = params.startAngle;
                this.endAngle = params.endAngle;
                this.x1 = params.cx + (this.radius * Math.cos(params.startAngle));
                this.y1 = params.cy + (this.radius * Math.sin(params.startAngle));
                this.x2 = params.cx + (this.radius * Math.cos(params.endAngle));
                this.y2 = params.cy + (this.radius * Math.sin(params.endAngle));
            }
            else {
                this.startAngle = _calcAngle(params.x1, params.y1);
                this.endAngle = _calcAngle(params.x2, params.y2);
                this.x1 = params.x1;
                this.y1 = params.y1;
                this.x2 = params.x2;
                this.y2 = params.y2;
            }

            if (this.endAngle < 0) {
                this.endAngle += TWO_PI;
            }
            if (this.startAngle < 0) {
                this.startAngle += TWO_PI;
            }

            // segment is used by vml     
            //this.segment = _jg.quadrant([this.x1, this.y1], [this.x2, this.y2]);

            // we now have startAngle and endAngle as positive numbers, meaning the
            // absolute difference (|d|) between them is the sweep (s) of this arc, unless the
            // arc is 'anticlockwise' in which case 's' is given by 2PI - |d|.

            var ea = this.endAngle < this.startAngle ? this.endAngle + TWO_PI : this.endAngle;
            this.sweep = Math.abs(ea - this.startAngle);
            if (this.anticlockwise) {
                this.sweep = TWO_PI - this.sweep;
            }
            var circumference = 2 * Math.PI * this.radius,
                frac = this.sweep / TWO_PI,
                length = circumference * frac;

            this.getLength = function () {
                return length;
            };

            this.getBounds = function () {
                return {
                    minX: params.cx - params.r,
                    maxX: params.cx + params.r,
                    minY: params.cy - params.r,
                    maxY: params.cy + params.r
                };
            };

            var VERY_SMALL_VALUE = 0.0000000001,
                gentleRound = function (n) {
                    var f = Math.floor(n), r = Math.ceil(n);
                    if (n - f < VERY_SMALL_VALUE) {
                        return f;
                    }
                    else if (r - n < VERY_SMALL_VALUE) {
                        return r;
                    }
                    return n;
                };

            /**
             * returns the point on the segment's path that is 'location' along the length of the path, where 'location' is a decimal from
             * 0 to 1 inclusive.
             */
            this.pointOnPath = function (location, absolute) {

                if (location === 0) {
                    return { x: this.x1, y: this.y1, theta: this.startAngle };
                }
                else if (location === 1) {
                    return { x: this.x2, y: this.y2, theta: this.endAngle };
                }

                if (absolute) {
                    location = location / length;
                }

                var angle = _calcAngleForLocation(this, location),
                    _x = params.cx + (params.r * Math.cos(angle)),
                    _y = params.cy + (params.r * Math.sin(angle));

                return { x: gentleRound(_x), y: gentleRound(_y), theta: angle };
            };

            /**
             * returns the gradient of the segment at the given point.
             */
            this.gradientAtPoint = function (location, absolute) {
                var p = this.pointOnPath(location, absolute);
                var m = _jg.normal([ params.cx, params.cy ], [p.x, p.y ]);
                if (!this.anticlockwise && (m === Infinity || m === -Infinity)) {
                    m *= -1;
                }
                return m;
            };

            this.pointAlongPathFrom = function (location, distance, absolute) {
                var p = this.pointOnPath(location, absolute),
                    arcSpan = distance / circumference * 2 * Math.PI,
                    dir = this.anticlockwise ? -1 : 1,
                    startAngle = p.theta + (dir * arcSpan),
                    startX = params.cx + (this.radius * Math.cos(startAngle)),
                    startY = params.cy + (this.radius * Math.sin(startAngle));

                return {x: startX, y: startY};
            };
        },

        Bezier: function (params) {
            this.curve = [
                { x: params.x1, y: params.y1},
                { x: params.cp1x, y: params.cp1y },
                { x: params.cp2x, y: params.cp2y },
                { x: params.x2, y: params.y2 }
            ];

            var _super = _jp.Segments.AbstractSegment.apply(this, arguments);
            // although this is not a strictly rigorous determination of bounds
            // of a bezier curve, it works for the types of curves that this segment
            // type produces.
            this.bounds = {
                minX: Math.min(params.x1, params.x2, params.cp1x, params.cp2x),
                minY: Math.min(params.y1, params.y2, params.cp1y, params.cp2y),
                maxX: Math.max(params.x1, params.x2, params.cp1x, params.cp2x),
                maxY: Math.max(params.y1, params.y2, params.cp1y, params.cp2y)
            };

            this.type = "Bezier";

            var _translateLocation = function (_curve, location, absolute) {
                if (absolute) {
                    location = root.jsBezier.locationAlongCurveFrom(_curve, location > 0 ? 0 : 1, location);
                }

                return location;
            };

            /**
             * returns the point on the segment's path that is 'location' along the length of the path, where 'location' is a decimal from
             * 0 to 1 inclusive.
             */
            this.pointOnPath = function (location, absolute) {
                location = _translateLocation(this.curve, location, absolute);
                return root.jsBezier.pointOnCurve(this.curve, location);
            };

            /**
             * returns the gradient of the segment at the given point.
             */
            this.gradientAtPoint = function (location, absolute) {
                location = _translateLocation(this.curve, location, absolute);
                return root.jsBezier.gradientAtPoint(this.curve, location);
            };

            this.pointAlongPathFrom = function (location, distance, absolute) {
                location = _translateLocation(this.curve, location, absolute);
                return root.jsBezier.pointAlongCurveFrom(this.curve, location, distance);
            };

            this.getLength = function () {
                return root.jsBezier.getLength(this.curve);
            };

            this.getBounds = function () {
                return this.bounds;
            };
        }
    };

    _jp.SegmentRenderer = {
        getPath: function (segment) {
            return ({
                "Straight": function () {
                    var d = segment.getCoordinates();
                    return "M " + d.x1 + " " + d.y1 + " L " + d.x2 + " " + d.y2;
                },
                "Bezier": function () {
                    var d = segment.params;
                    return "M " + d.x1 + " " + d.y1 +
                        " C " + d.cp1x + " " + d.cp1y + " " + d.cp2x + " " + d.cp2y + " " + d.x2 + " " + d.y2;
                },
                "Arc": function () {
                    var d = segment.params,
                        laf = segment.sweep > Math.PI ? 1 : 0,
                        sf = segment.anticlockwise ? 0 : 1;

                    return "M" + segment.x1 + " " + segment.y1 + " A " + segment.radius + " " + d.r + " 0 " + laf + "," + sf + " " + segment.x2 + " " + segment.y2;
                }
            })[segment.type]();
        }
    };

    /*
     Class: UIComponent
     Superclass for Connector and AbstractEndpoint.
     */
    var AbstractComponent = function () {
        this.resetBounds = function () {
            this.bounds = { minX: Infinity, minY: Infinity, maxX: -Infinity, maxY: -Infinity };
        };
        this.resetBounds();
    };

    /*
     * Class: Connector
     * Superclass for all Connectors; here is where Segments are managed.  This is exposed on jsPlumb just so it
     * can be accessed from other files. You should not try to instantiate one of these directly.
     *
     * When this class is asked for a pointOnPath, or gradient etc, it must first figure out which segment to dispatch
     * that request to. This is done by keeping track of the total connector length as segments are added, and also
     * their cumulative ratios to the total length.  Then when the right segment is found it is a simple case of dispatching
     * the request to it (and adjusting 'location' so that it is relative to the beginning of that segment.)
     */
    _jp.Connectors.AbstractConnector = function (params) {

        AbstractComponent.apply(this, arguments);

        var segments = [],
            totalLength = 0,
            segmentProportions = [],
            segmentProportionalLengths = [],
            stub = params.stub || 0,
            sourceStub = _ju.isArray(stub) ? stub[0] : stub,
            targetStub = _ju.isArray(stub) ? stub[1] : stub,
            gap = params.gap || 0,
            sourceGap = _ju.isArray(gap) ? gap[0] : gap,
            targetGap = _ju.isArray(gap) ? gap[1] : gap,
            userProvidedSegments = null,
            edited = false,
            paintInfo = null,
            geometry = null,
            editable = params.editable !== false && _jp.ConnectorEditors != null && _jp.ConnectorEditors[this.type] != null;

        var _setGeometry = this.setGeometry = function(g, internallyComputed) {
            edited = (!internallyComputed);
            geometry = g;
        };
        var _getGeometry = this.getGeometry = function() {
            return geometry;
        };

        this.getPathData = function() {
            var p = "";
            for (var i = 0; i < segments.length; i++) {
                p += _jp.SegmentRenderer.getPath(segments[i]);
                p += " ";
            }
            return p;
        };

        this.hasBeenEdited = function() { return edited; };
        this.isEditing = function() { return this.editor != null && this.editor.isActive(); };
        this.setEditable = function(e) {
            // if this connector has an editor already, or
            // if an editor for this connector's type is available, or
            // if the child declares an overrideSetEditable and it does not return false, editable is true.
            if (e && _jp.ConnectorEditors != null && _jp.ConnectorEditors[this.type] != null && (this.overrideSetEditable == null || this.overrideSetEditable())) {
                editable = e;
            } else {
                editable = false;
            }
            return editable;
        };
        this.isEditable = function() { return editable; };

        /**
         * Function: findSegmentForPoint
         * Returns the segment that is closest to the given [x,y],
         * null if nothing found.  This function returns a JS
         * object with:
         *
         *   d   -   distance from segment
         *   l   -   proportional location in segment
         *   x   -   x point on the segment
         *   y   -   y point on the segment
         *   s   -   the segment itself.
         */
        this.findSegmentForPoint = function (x, y) {
            var out = { d: Infinity, s: null, x: null, y: null, l: null };
            for (var i = 0; i < segments.length; i++) {
                var _s = segments[i].findClosestPointOnPath(x, y);
                if (_s.d < out.d) {
                    out.d = _s.d;
                    out.l = _s.l;
                    out.x = _s.x;
                    out.y = _s.y;
                    out.s = segments[i];
                    out.x1 = _s.x1;
                    out.x2 = _s.x2;
                    out.y1 = _s.y1;
                    out.y2 = _s.y2;
                    out.index = i;
                }
            }

            return out;
        };

        var _updateSegmentProportions = function () {
                var curLoc = 0;
                for (var i = 0; i < segments.length; i++) {
                    var sl = segments[i].getLength();
                    segmentProportionalLengths[i] = sl / totalLength;
                    segmentProportions[i] = [curLoc, (curLoc += (sl / totalLength)) ];
                }
            },

            /**
             * returns [segment, proportion of travel in segment, segment index] for the segment
             * that contains the point which is 'location' distance along the entire path, where
             * 'location' is a decimal between 0 and 1 inclusive. in this connector type, paths
             * are made up of a list of segments, each of which contributes some fraction to
             * the total length.
             * From 1.3.10 this also supports the 'absolute' property, which lets us specify a location
             * as the absolute distance in pixels, rather than a proportion of the total path.
             */
            _findSegmentForLocation = function (location, absolute) {
                if (absolute) {
                    location = location > 0 ? location / totalLength : (totalLength + location) / totalLength;
                }
                var idx = segmentProportions.length - 1, inSegmentProportion = 1;
                for (var i = 0; i < segmentProportions.length; i++) {
                    if (segmentProportions[i][1] >= location) {
                        idx = i;
                        // todo is this correct for all connector path types?
                        inSegmentProportion = location === 1 ? 1 : location === 0 ? 0 : (location - segmentProportions[i][0]) / segmentProportionalLengths[i];
                        break;
                    }
                }
                return { segment: segments[idx], proportion: inSegmentProportion, index: idx };
            },
            _addSegment = function (conn, type, params) {
                if (params.x1 === params.x2 && params.y1 === params.y2) {
                    return;
                }
                var s = new _jp.Segments[type](params);
                segments.push(s);
                totalLength += s.getLength();
                conn.updateBounds(s);
            },
            _clearSegments = function () {
                totalLength = segments.length = segmentProportions.length = segmentProportionalLengths.length = 0;
            };

        this.setSegments = function (_segs) {
            userProvidedSegments = [];
            totalLength = 0;
            for (var i = 0; i < _segs.length; i++) {
                userProvidedSegments.push(_segs[i]);
                totalLength += _segs[i].getLength();
            }
        };

        this.getLength = function() {
            return totalLength;
        };

        var _prepareCompute = function (params) {
            this.strokeWidth = params.strokeWidth;
            var segment = _jg.quadrant(params.sourcePos, params.targetPos),
                swapX = params.targetPos[0] < params.sourcePos[0],
                swapY = params.targetPos[1] < params.sourcePos[1],
                lw = params.strokeWidth || 1,
                so = params.sourceEndpoint.anchor.getOrientation(params.sourceEndpoint),
                to = params.targetEndpoint.anchor.getOrientation(params.targetEndpoint),
                x = swapX ? params.targetPos[0] : params.sourcePos[0],
                y = swapY ? params.targetPos[1] : params.sourcePos[1],
                w = Math.abs(params.targetPos[0] - params.sourcePos[0]),
                h = Math.abs(params.targetPos[1] - params.sourcePos[1]);

            // if either anchor does not have an orientation set, we derive one from their relative
            // positions.  we fix the axis to be the one in which the two elements are further apart, and
            // point each anchor at the other element.  this is also used when dragging a new connection.
            if (so[0] === 0 && so[1] === 0 || to[0] === 0 && to[1] === 0) {
                var index = w > h ? 0 : 1, oIndex = [1, 0][index];
                so = [];
                to = [];
                so[index] = params.sourcePos[index] > params.targetPos[index] ? -1 : 1;
                to[index] = params.sourcePos[index] > params.targetPos[index] ? 1 : -1;
                so[oIndex] = 0;
                to[oIndex] = 0;
            }

            var sx = swapX ? w + (sourceGap * so[0]) : sourceGap * so[0],
                sy = swapY ? h + (sourceGap * so[1]) : sourceGap * so[1],
                tx = swapX ? targetGap * to[0] : w + (targetGap * to[0]),
                ty = swapY ? targetGap * to[1] : h + (targetGap * to[1]),
                oProduct = ((so[0] * to[0]) + (so[1] * to[1]));

            var result = {
                sx: sx, sy: sy, tx: tx, ty: ty, lw: lw,
                xSpan: Math.abs(tx - sx),
                ySpan: Math.abs(ty - sy),
                mx: (sx + tx) / 2,
                my: (sy + ty) / 2,
                so: so, to: to, x: x, y: y, w: w, h: h,
                segment: segment,
                startStubX: sx + (so[0] * sourceStub),
                startStubY: sy + (so[1] * sourceStub),
                endStubX: tx + (to[0] * targetStub),
                endStubY: ty + (to[1] * targetStub),
                isXGreaterThanStubTimes2: Math.abs(sx - tx) > (sourceStub + targetStub),
                isYGreaterThanStubTimes2: Math.abs(sy - ty) > (sourceStub + targetStub),
                opposite: oProduct === -1,
                perpendicular: oProduct === 0,
                orthogonal: oProduct === 1,
                sourceAxis: so[0] === 0 ? "y" : "x",
                points: [x, y, w, h, sx, sy, tx, ty ],
                stubs:[sourceStub, targetStub]
            };
            result.anchorOrientation = result.opposite ? "opposite" : result.orthogonal ? "orthogonal" : "perpendicular";
            return result;
        };

        this.getSegments = function () {
            return segments;
        };

        this.updateBounds = function (segment) {
            var segBounds = segment.getBounds();
            this.bounds.minX = Math.min(this.bounds.minX, segBounds.minX);
            this.bounds.maxX = Math.max(this.bounds.maxX, segBounds.maxX);
            this.bounds.minY = Math.min(this.bounds.minY, segBounds.minY);
            this.bounds.maxY = Math.max(this.bounds.maxY, segBounds.maxY);
        };

        var dumpSegmentsToConsole = function () {
            console.log("SEGMENTS:");
            for (var i = 0; i < segments.length; i++) {
                console.log(segments[i].type, segments[i].getLength(), segmentProportions[i]);
            }
        };

        this.pointOnPath = function (location, absolute) {
            var seg = _findSegmentForLocation(location, absolute);
            return seg.segment && seg.segment.pointOnPath(seg.proportion, false) || [0, 0];
        };

        this.gradientAtPoint = function (location, absolute) {
            var seg = _findSegmentForLocation(location, absolute);
            return seg.segment && seg.segment.gradientAtPoint(seg.proportion, false) || 0;
        };

        this.pointAlongPathFrom = function (location, distance, absolute) {
            var seg = _findSegmentForLocation(location, absolute);
            // TODO what happens if this crosses to the next segment?
            return seg.segment && seg.segment.pointAlongPathFrom(seg.proportion, distance, false) || [0, 0];
        };

        this.compute = function (params) {
            paintInfo = _prepareCompute.call(this, params);

            _clearSegments();
            this._compute(paintInfo, params);
            this.x = paintInfo.points[0];
            this.y = paintInfo.points[1];
            this.w = paintInfo.points[2];
            this.h = paintInfo.points[3];
            this.segment = paintInfo.segment;
            _updateSegmentProportions();
        };

        return {
            addSegment: _addSegment,
            prepareCompute: _prepareCompute,
            sourceStub: sourceStub,
            targetStub: targetStub,
            maxStub: Math.max(sourceStub, targetStub),
            sourceGap: sourceGap,
            targetGap: targetGap,
            maxGap: Math.max(sourceGap, targetGap),
            setGeometry:_setGeometry,
            getGeometry:_getGeometry
        };
    };
    _ju.extend(_jp.Connectors.AbstractConnector, AbstractComponent);


    // ********************************* END OF CONNECTOR TYPES *******************************************************************

    // ********************************* ENDPOINT TYPES *******************************************************************

    _jp.Endpoints.AbstractEndpoint = function (params) {
        AbstractComponent.apply(this, arguments);
        var compute = this.compute = function (anchorPoint, orientation, endpointStyle, connectorPaintStyle) {
            var out = this._compute.apply(this, arguments);
            this.x = out[0];
            this.y = out[1];
            this.w = out[2];
            this.h = out[3];
            this.bounds.minX = this.x;
            this.bounds.minY = this.y;
            this.bounds.maxX = this.x + this.w;
            this.bounds.maxY = this.y + this.h;
            return out;
        };
        return {
            compute: compute,
            cssClass: params.cssClass
        };
    };
    _ju.extend(_jp.Endpoints.AbstractEndpoint, AbstractComponent);

    /**
     * Class: Endpoints.Dot
     * A round endpoint, with default radius 10 pixels.
     */

    /**
     * Function: Constructor
     *
     * Parameters:
     *
     *    radius    -    radius of the endpoint.  defaults to 10 pixels.
     */
    _jp.Endpoints.Dot = function (params) {
        this.type = "Dot";
        var _super = _jp.Endpoints.AbstractEndpoint.apply(this, arguments);
        params = params || {};
        this.radius = params.radius || 10;
        this.defaultOffset = 0.5 * this.radius;
        this.defaultInnerRadius = this.radius / 3;

        this._compute = function (anchorPoint, orientation, endpointStyle, connectorPaintStyle) {
            this.radius = endpointStyle.radius || this.radius;
            var x = anchorPoint[0] - this.radius,
                y = anchorPoint[1] - this.radius,
                w = this.radius * 2,
                h = this.radius * 2;

            if (endpointStyle.stroke) {
                var lw = endpointStyle.strokeWidth || 1;
                x -= lw;
                y -= lw;
                w += (lw * 2);
                h += (lw * 2);
            }
            return [ x, y, w, h, this.radius ];
        };
    };
    _ju.extend(_jp.Endpoints.Dot, _jp.Endpoints.AbstractEndpoint);

    _jp.Endpoints.Rectangle = function (params) {
        this.type = "Rectangle";
        var _super = _jp.Endpoints.AbstractEndpoint.apply(this, arguments);
        params = params || {};
        this.width = params.width || 20;
        this.height = params.height || 20;

        this._compute = function (anchorPoint, orientation, endpointStyle, connectorPaintStyle) {
            var width = endpointStyle.width || this.width,
                height = endpointStyle.height || this.height,
                x = anchorPoint[0] - (width / 2),
                y = anchorPoint[1] - (height / 2);

            return [ x, y, width, height];
        };
    };
    _ju.extend(_jp.Endpoints.Rectangle, _jp.Endpoints.AbstractEndpoint);

    var DOMElementEndpoint = function (params) {
        _jp.jsPlumbUIComponent.apply(this, arguments);
        this._jsPlumb.displayElements = [];
    };
    _ju.extend(DOMElementEndpoint, _jp.jsPlumbUIComponent, {
        getDisplayElements: function () {
            return this._jsPlumb.displayElements;
        },
        appendDisplayElement: function (el) {
            this._jsPlumb.displayElements.push(el);
        }
    });

    /**
     * Class: Endpoints.Image
     * Draws an image as the Endpoint.
     */
    /**
     * Function: Constructor
     *
     * Parameters:
     *
     *    src    -    location of the image to use.

     TODO: multiple references to self. not sure quite how to get rid of them entirely. perhaps self = null in the cleanup
     function will suffice

     TODO this class still might leak memory.

     */
    _jp.Endpoints.Image = function (params) {

        this.type = "Image";
        DOMElementEndpoint.apply(this, arguments);
        _jp.Endpoints.AbstractEndpoint.apply(this, arguments);

        var _onload = params.onload,
            src = params.src || params.url,
            clazz = params.cssClass ? " " + params.cssClass : "";

        this._jsPlumb.img = new Image();
        this._jsPlumb.ready = false;
        this._jsPlumb.initialized = false;
        this._jsPlumb.deleted = false;
        this._jsPlumb.widthToUse = params.width;
        this._jsPlumb.heightToUse = params.height;
        this._jsPlumb.endpoint = params.endpoint;

        this._jsPlumb.img.onload = function () {
            if (this._jsPlumb != null) {
                this._jsPlumb.ready = true;
                this._jsPlumb.widthToUse = this._jsPlumb.widthToUse || this._jsPlumb.img.width;
                this._jsPlumb.heightToUse = this._jsPlumb.heightToUse || this._jsPlumb.img.height;
                if (_onload) {
                    _onload(this);
                }
            }
        }.bind(this);

        /*
         Function: setImage
         Sets the Image to use in this Endpoint.

         Parameters:
         img         -   may be a URL or an Image object
         onload      -   optional; a callback to execute once the image has loaded.
         */
        this._jsPlumb.endpoint.setImage = function (_img, onload) {
            var s = _img.constructor === String ? _img : _img.src;
            _onload = onload;
            this._jsPlumb.img.src = s;

            if (this.canvas != null) {
                this.canvas.setAttribute("src", this._jsPlumb.img.src);
            }
        }.bind(this);

        this._jsPlumb.endpoint.setImage(src, _onload);
        this._compute = function (anchorPoint, orientation, endpointStyle, connectorPaintStyle) {
            this.anchorPoint = anchorPoint;
            if (this._jsPlumb.ready) {
                return [anchorPoint[0] - this._jsPlumb.widthToUse / 2, anchorPoint[1] - this._jsPlumb.heightToUse / 2,
                    this._jsPlumb.widthToUse, this._jsPlumb.heightToUse];
            }
            else {
                return [0, 0, 0, 0];
            }
        };

        this.canvas = _jp.createElement("img", {
            position:"absolute",
            margin:0,
            padding:0,
            outline:0
        }, this._jsPlumb.instance.endpointClass + clazz);

        if (this._jsPlumb.widthToUse) {
            this.canvas.setAttribute("width", this._jsPlumb.widthToUse);
        }
        if (this._jsPlumb.heightToUse) {
            this.canvas.setAttribute("height", this._jsPlumb.heightToUse);
        }
        this._jsPlumb.instance.appendElement(this.canvas);

        this.actuallyPaint = function (d, style, anchor) {
            if (!this._jsPlumb.deleted) {
                if (!this._jsPlumb.initialized) {
                    this.canvas.setAttribute("src", this._jsPlumb.img.src);
                    this.appendDisplayElement(this.canvas);
                    this._jsPlumb.initialized = true;
                }
                var x = this.anchorPoint[0] - (this._jsPlumb.widthToUse / 2),
                    y = this.anchorPoint[1] - (this._jsPlumb.heightToUse / 2);
                _ju.sizeElement(this.canvas, x, y, this._jsPlumb.widthToUse, this._jsPlumb.heightToUse);
            }
        };

        this.paint = function (style, anchor) {
            if (this._jsPlumb != null) {  // may have been deleted
                if (this._jsPlumb.ready) {
                    this.actuallyPaint(style, anchor);
                }
                else {
                    root.setTimeout(function () {
                        this.paint(style, anchor);
                    }.bind(this), 200);
                }
            }
        };
    };
    _ju.extend(_jp.Endpoints.Image, [ DOMElementEndpoint, _jp.Endpoints.AbstractEndpoint ], {
        cleanup: function (force) {
            if (force) {
                this._jsPlumb.deleted = true;
                if (this.canvas) {
                    this.canvas.parentNode.removeChild(this.canvas);
                }
                this.canvas = null;
            }
        }
    });

    /*
     * Class: Endpoints.Blank
     * An Endpoint that paints nothing (visible) on the screen.  Supports cssClass and hoverClass parameters like all Endpoints.
     */
    _jp.Endpoints.Blank = function (params) {
        var _super = _jp.Endpoints.AbstractEndpoint.apply(this, arguments);
        this.type = "Blank";
        DOMElementEndpoint.apply(this, arguments);
        this._compute = function (anchorPoint, orientation, endpointStyle, connectorPaintStyle) {
            return [anchorPoint[0], anchorPoint[1], 10, 0];
        };

        var clazz = params.cssClass ? " " + params.cssClass : "";

        this.canvas = _jp.createElement("div", {
            display: "block",
            width: "1px",
            height: "1px",
            background: "transparent",
            position: "absolute"
        }, this._jsPlumb.instance.endpointClass + clazz);

        this._jsPlumb.instance.appendElement(this.canvas);

        this.paint = function (style, anchor) {
            _ju.sizeElement(this.canvas, this.x, this.y, this.w, this.h);
        };
    };
    _ju.extend(_jp.Endpoints.Blank, [_jp.Endpoints.AbstractEndpoint, DOMElementEndpoint], {
        cleanup: function () {
            if (this.canvas && this.canvas.parentNode) {
                this.canvas.parentNode.removeChild(this.canvas);
            }
        }
    });

    /*
     * Class: Endpoints.Triangle
     * A triangular Endpoint.
     */
    /*
     * Function: Constructor
     *
     * Parameters:
     *
     * width   width of the triangle's base.  defaults to 55 pixels.
     * height  height of the triangle from base to apex.  defaults to 55 pixels.
     */
    _jp.Endpoints.Triangle = function (params) {
        this.type = "Triangle";
        _jp.Endpoints.AbstractEndpoint.apply(this, arguments);
        var self = this;
        params = params || {  };
        params.width = params.width || 55;
        params.height = params.height || 55;
        this.width = params.width;
        this.height = params.height;
        this._compute = function (anchorPoint, orientation, endpointStyle, connectorPaintStyle) {
            var width = endpointStyle.width || self.width,
                height = endpointStyle.height || self.height,
                x = anchorPoint[0] - (width / 2),
                y = anchorPoint[1] - (height / 2);
            return [ x, y, width, height ];
        };
    };
// ********************************* END OF ENDPOINT TYPES *******************************************************************


// ********************************* OVERLAY DEFINITIONS ***********************************************************************    

    var AbstractOverlay = _jp.Overlays.AbstractOverlay = function (params) {
        this.visible = true;
        this.isAppendedAtTopLevel = true;
        this.component = params.component;
        this.loc = params.location == null ? 0.5 : params.location;
        this.endpointLoc = params.endpointLocation == null ? [ 0.5, 0.5] : params.endpointLocation;
        this.visible = params.visible !== false;
    };
    AbstractOverlay.prototype = {
        cleanup: function (force) {
            if (force) {
                this.component = null;
                this.canvas = null;
                this.endpointLoc = null;
            }
        },
        reattach:function(instance, component) { },
        setVisible: function (val) {
            this.visible = val;
            this.component.repaint();
        },
        isVisible: function () {
            return this.visible;
        },
        hide: function () {
            this.setVisible(false);
        },
        show: function () {
            this.setVisible(true);
        },
        incrementLocation: function (amount) {
            this.loc += amount;
            this.component.repaint();
        },
        setLocation: function (l) {
            this.loc = l;
            this.component.repaint();
        },
        getLocation: function () {
            return this.loc;
        },
        updateFrom:function() { }
    };


    /*
     * Class: Overlays.Arrow
     *
     * An arrow overlay, defined by four points: the head, the two sides of the tail, and a 'foldback' point at some distance along the length
     * of the arrow that lines from each tail point converge into.  The foldback point is defined using a decimal that indicates some fraction
     * of the length of the arrow and has a default value of 0.623.  A foldback point value of 1 would mean that the arrow had a straight line
     * across the tail.
     */
    /*
     * @constructor
     *
     * @param {Object} params Constructor params.
     * @param {Number} [params.length] Distance in pixels from head to tail baseline. default 20.
     * @param {Number} [params.width] Width in pixels of the tail baseline. default 20.
     * @param {String} [params.fill] Style to use when filling the arrow.  defaults to "black".
     * @param {String} [params.stroke] Style to use when stroking the arrow. defaults to null, which means the arrow is not stroked.
     * @param {Number} [params.stroke-width] Line width to use when stroking the arrow. defaults to 1, but only used if stroke is not null.
     * @param {Number} [params.foldback] Distance (as a decimal from 0 to 1 inclusive) along the length of the arrow marking the point the tail points should fold back to.  defaults to 0.623.
     * @param {Number} [params.location] Distance (as a decimal from 0 to 1 inclusive) marking where the arrow should sit on the connector. defaults to 0.5.
     * @param {NUmber} [params.direction] Indicates the direction the arrow points in. valid values are -1 and 1; 1 is default.
     */
    _jp.Overlays.Arrow = function (params) {
        this.type = "Arrow";
        AbstractOverlay.apply(this, arguments);
        this.isAppendedAtTopLevel = false;
        params = params || {};
        var self = this;

        this.length = params.length || 20;
        this.width = params.width || 20;
        this.id = params.id;
        var direction = (params.direction || 1) < 0 ? -1 : 1,
            paintStyle = params.paintStyle || { "stroke-width": 1 },
        // how far along the arrow the lines folding back in come to. default is 62.3%.
            foldback = params.foldback || 0.623;

        this.computeMaxSize = function () {
            return self.width * 1.5;
        };

        this.elementCreated = function(p, component) {
            this.path = p;
            if (params.events) {
                for (var i in params.events) {
                    _jp.on(p, i, params.events[i]);
                }
            }
        };

        this.draw = function (component, currentConnectionPaintStyle) {

            var hxy, mid, txy, tail, cxy;
            if (component.pointAlongPathFrom) {

                if (_ju.isString(this.loc) || this.loc > 1 || this.loc < 0) {
                    var l = parseInt(this.loc, 10),
                        fromLoc = this.loc < 0 ? 1 : 0;
                    hxy = component.pointAlongPathFrom(fromLoc, l, false);
                    mid = component.pointAlongPathFrom(fromLoc, l - (direction * this.length / 2), false);
                    txy = _jg.pointOnLine(hxy, mid, this.length);
                }
                else if (this.loc === 1) {
                    hxy = component.pointOnPath(this.loc);
                    mid = component.pointAlongPathFrom(this.loc, -(this.length));
                    txy = _jg.pointOnLine(hxy, mid, this.length);

                    if (direction === -1) {
                        var _ = txy;
                        txy = hxy;
                        hxy = _;
                    }
                }
                else if (this.loc === 0) {
                    txy = component.pointOnPath(this.loc);
                    mid = component.pointAlongPathFrom(this.loc, this.length);
                    hxy = _jg.pointOnLine(txy, mid, this.length);
                    if (direction === -1) {
                        var __ = txy;
                        txy = hxy;
                        hxy = __;
                    }
                }
                else {
                    hxy = component.pointAlongPathFrom(this.loc, direction * this.length / 2);
                    mid = component.pointOnPath(this.loc);
                    txy = _jg.pointOnLine(hxy, mid, this.length);
                }

                tail = _jg.perpendicularLineTo(hxy, txy, this.width);
                cxy = _jg.pointOnLine(hxy, txy, foldback * this.length);

                var d = { hxy: hxy, tail: tail, cxy: cxy },
                    stroke = paintStyle.stroke || currentConnectionPaintStyle.stroke,
                    fill = paintStyle.fill || currentConnectionPaintStyle.stroke,
                    lineWidth = paintStyle.strokeWidth || currentConnectionPaintStyle.strokeWidth;

                return {
                    component: component,
                    d: d,
                    "stroke-width": lineWidth,
                    stroke: stroke,
                    fill: fill,
                    minX: Math.min(hxy.x, tail[0].x, tail[1].x),
                    maxX: Math.max(hxy.x, tail[0].x, tail[1].x),
                    minY: Math.min(hxy.y, tail[0].y, tail[1].y),
                    maxY: Math.max(hxy.y, tail[0].y, tail[1].y)
                };
            }
            else {
                return {component: component, minX: 0, maxX: 0, minY: 0, maxY: 0};
            }
        };
    };
    _ju.extend(_jp.Overlays.Arrow, AbstractOverlay, {
        updateFrom:function(d) {
            this.length = d.length || this.length;
            this.width = d.width|| this.width;
            this.direction = d.direction != null ? d.direction : this.direction;
            this.foldback = d.foldback|| this.foldback;
        }
    });

    /*
     * Class: Overlays.PlainArrow
     *
     * A basic arrow.  This is in fact just one instance of the more generic case in which the tail folds back on itself to some
     * point along the length of the arrow: in this case, that foldback point is the full length of the arrow.  so it just does
     * a 'call' to Arrow with foldback set appropriately.
     */
    /*
     * Function: Constructor
     * See <Overlays.Arrow> for allowed parameters for this overlay.
     */
    _jp.Overlays.PlainArrow = function (params) {
        params = params || {};
        var p = _jp.extend(params, {foldback: 1});
        _jp.Overlays.Arrow.call(this, p);
        this.type = "PlainArrow";
    };
    _ju.extend(_jp.Overlays.PlainArrow, _jp.Overlays.Arrow);

    /*
     * Class: Overlays.Diamond
     * 
     * A diamond. Like PlainArrow, this is a concrete case of the more generic case of the tail points converging on some point...it just
     * happens that in this case, that point is greater than the length of the the arrow.
     *
     *      this could probably do with some help with positioning...due to the way it reuses the Arrow paint code, what Arrow thinks is the
     *      center is actually 1/4 of the way along for this guy.  but we don't have any knowledge of pixels at this point, so we're kind of
     *      stuck when it comes to helping out the Arrow class. possibly we could pass in a 'transpose' parameter or something. the value
     *      would be -l/4 in this case - move along one quarter of the total length.
     */
    /*
     * Function: Constructor
     * See <Overlays.Arrow> for allowed parameters for this overlay.
     */
    _jp.Overlays.Diamond = function (params) {
        params = params || {};
        var l = params.length || 40,
            p = _jp.extend(params, {length: l / 2, foldback: 2});
        _jp.Overlays.Arrow.call(this, p);
        this.type = "Diamond";
    };
    _ju.extend(_jp.Overlays.Diamond, _jp.Overlays.Arrow);

    var _getDimensions = function (component, forceRefresh) {
        if (component._jsPlumb.cachedDimensions == null || forceRefresh) {
            component._jsPlumb.cachedDimensions = component.getDimensions();
        }
        return component._jsPlumb.cachedDimensions;
    };

    // abstract superclass for overlays that add an element to the DOM.
    var AbstractDOMOverlay = function (params) {
        _jp.jsPlumbUIComponent.apply(this, arguments);
        AbstractOverlay.apply(this, arguments);

        // hand off fired events to associated component.
        var _f = this.fire;
        this.fire = function () {
            _f.apply(this, arguments);
            if (this.component) {
                this.component.fire.apply(this.component, arguments);
            }
        };

        this.detached=false;
        this.id = params.id;
        this._jsPlumb.div = null;
        this._jsPlumb.initialised = false;
        this._jsPlumb.component = params.component;
        this._jsPlumb.cachedDimensions = null;
        this._jsPlumb.create = params.create;
        this._jsPlumb.initiallyInvisible = params.visible === false;

        this.getElement = function () {
            if (this._jsPlumb.div == null) {
                var div = this._jsPlumb.div = _jp.getElement(this._jsPlumb.create(this._jsPlumb.component));
                div.style.position = "absolute";
                div.className = this._jsPlumb.instance.overlayClass + " " +
                    (this.cssClass ? this.cssClass :
                        params.cssClass ? params.cssClass : "");
                this._jsPlumb.instance.appendElement(div);
                this._jsPlumb.instance.getId(div);
                this.canvas = div;

                // in IE the top left corner is what it placed at the desired location.  This will not
                // be fixed. IE8 is not going to be supported for much longer.
                var ts = "translate(-50%, -50%)";
                div.style.webkitTransform = ts;
                div.style.mozTransform = ts;
                div.style.msTransform = ts;
                div.style.oTransform = ts;
                div.style.transform = ts;

                // write the related component into the created element
                div._jsPlumb = this;

                if (params.visible === false) {
                    div.style.display = "none";
                }
            }
            return this._jsPlumb.div;
        };

        this.draw = function (component, currentConnectionPaintStyle, absolutePosition) {
            var td = _getDimensions(this);
            if (td != null && td.length === 2) {
                var cxy = { x: 0, y: 0 };

                // absolutePosition would have been set by a call to connection.setAbsoluteOverlayPosition.
                if (absolutePosition) {
                    cxy = { x: absolutePosition[0], y: absolutePosition[1] };
                }
                else if (component.pointOnPath) {
                    var loc = this.loc, absolute = false;
                    if (_ju.isString(this.loc) || this.loc < 0 || this.loc > 1) {
                        loc = parseInt(this.loc, 10);
                        absolute = true;
                    }
                    cxy = component.pointOnPath(loc, absolute);  // a connection
                }
                else {
                    var locToUse = this.loc.constructor === Array ? this.loc : this.endpointLoc;
                    cxy = { x: locToUse[0] * component.w,
                        y: locToUse[1] * component.h };
                }

                var minx = cxy.x - (td[0] / 2),
                    miny = cxy.y - (td[1] / 2);

                return {
                    component: component,
                    d: { minx: minx, miny: miny, td: td, cxy: cxy },
                    minX: minx,
                    maxX: minx + td[0],
                    minY: miny,
                    maxY: miny + td[1]
                };
            }
            else {
                return {minX: 0, maxX: 0, minY: 0, maxY: 0};
            }
        };
    };
    _ju.extend(AbstractDOMOverlay, [_jp.jsPlumbUIComponent, AbstractOverlay], {
        getDimensions: function () {
            return [1,1];
        },
        setVisible: function (state) {
            if (this._jsPlumb.div) {
                this._jsPlumb.div.style.display = state ? "block" : "none";
                // if initially invisible, dimensions are 0,0 and never get updated
                if (state && this._jsPlumb.initiallyInvisible) {
                    _getDimensions(this, true);
                    this.component.repaint();
                    this._jsPlumb.initiallyInvisible = false;
                }
            }
        },
        /*
         * Function: clearCachedDimensions
         * Clears the cached dimensions for the label. As a performance enhancement, label dimensions are
         * cached from 1.3.12 onwards. The cache is cleared when you change the label text, of course, but
         * there are other reasons why the text dimensions might change - if you make a change through CSS, for
         * example, you might change the font size.  in that case you should explicitly call this method.
         */
        clearCachedDimensions: function () {
            this._jsPlumb.cachedDimensions = null;
        },
        cleanup: function (force) {
            if (force) {
                if (this._jsPlumb.div != null) {
                    this._jsPlumb.div._jsPlumb = null;
                    this._jsPlumb.instance.removeElement(this._jsPlumb.div);
                }
            }
            else {
                // if not a forced cleanup, just detach child from parent for now.
                if (this._jsPlumb && this._jsPlumb.div && this._jsPlumb.div.parentNode) {
                    this._jsPlumb.div.parentNode.removeChild(this._jsPlumb.div);
                }
                this.detached = true;
            }

        },
        reattach:function(instance, component) {
            if (this._jsPlumb.div != null) {
                instance.getContainer().appendChild(this._jsPlumb.div);
            }
            this.detached = false;
        },
        computeMaxSize: function () {
            var td = _getDimensions(this);
            return Math.max(td[0], td[1]);
        },
        paint: function (p, containerExtents) {
            if (!this._jsPlumb.initialised) {
                this.getElement();
                p.component.appendDisplayElement(this._jsPlumb.div);
                this._jsPlumb.initialised = true;
                if (this.detached) {
                    this._jsPlumb.div.parentNode.removeChild(this._jsPlumb.div);
                }
            }
            this._jsPlumb.div.style.left = (p.component.x + p.d.minx) + "px";
            this._jsPlumb.div.style.top = (p.component.y + p.d.miny) + "px";
        }
    });

    /*
     * Class: Overlays.Custom
     * A Custom overlay. You supply a 'create' function which returns some DOM element, and jsPlumb positions it.
     * The 'create' function is passed a Connection or Endpoint.
     */
    /*
     * Function: Constructor
     * 
     * Parameters:
     * create - function for jsPlumb to call that returns a DOM element.
     * location - distance (as a decimal from 0 to 1 inclusive) marking where the label should sit on the connector. defaults to 0.5.
     * id - optional id to use for later retrieval of this overlay.
     *
     */
    _jp.Overlays.Custom = function (params) {
        this.type = "Custom";
        AbstractDOMOverlay.apply(this, arguments);
    };
    _ju.extend(_jp.Overlays.Custom, AbstractDOMOverlay);

    _jp.Overlays.GuideLines = function () {
        var self = this;
        self.length = 50;
        self.strokeWidth = 5;
        this.type = "GuideLines";
        AbstractOverlay.apply(this, arguments);
        _jp.jsPlumbUIComponent.apply(this, arguments);
        this.draw = function (connector, currentConnectionPaintStyle) {

            var head = connector.pointAlongPathFrom(self.loc, self.length / 2),
                mid = connector.pointOnPath(self.loc),
                tail = _jg.pointOnLine(head, mid, self.length),
                tailLine = _jg.perpendicularLineTo(head, tail, 40),
                headLine = _jg.perpendicularLineTo(tail, head, 20);

            return {
                connector: connector,
                head: head,
                tail: tail,
                headLine: headLine,
                tailLine: tailLine,
                minX: Math.min(head.x, tail.x, headLine[0].x, headLine[1].x),
                minY: Math.min(head.y, tail.y, headLine[0].y, headLine[1].y),
                maxX: Math.max(head.x, tail.x, headLine[0].x, headLine[1].x),
                maxY: Math.max(head.y, tail.y, headLine[0].y, headLine[1].y)
            };
        };

        // this.cleanup = function() { };  // nothing to clean up for GuideLines
    };

    /*
     * Class: Overlays.Label

     */
    /*
     * Function: Constructor
     * 
     * Parameters:
     * cssClass - optional css class string to append to css class. This string is appended "as-is", so you can of course have multiple classes
     *             defined.  This parameter is preferred to using labelStyle, borderWidth and borderStyle.
     * label - the label to paint.  May be a string or a function that returns a string.  Nothing will be painted if your label is null or your
     *         label function returns null.  empty strings _will_ be painted.
     * location - distance (as a decimal from 0 to 1 inclusive) marking where the label should sit on the connector. defaults to 0.5.
     * id - optional id to use for later retrieval of this overlay.
     * 
     *
     */
    _jp.Overlays.Label = function (params) {
        this.labelStyle = params.labelStyle;

        var labelWidth = null, labelHeight = null, labelText = null, labelPadding = null;
        this.cssClass = this.labelStyle != null ? this.labelStyle.cssClass : null;
        var p = _jp.extend({
            create: function () {
                return _jp.createElement("div");
            }}, params);
        _jp.Overlays.Custom.call(this, p);
        this.type = "Label";
        this.label = params.label || "";
        this.labelText = null;
        if (this.labelStyle) {
            var el = this.getElement();
            this.labelStyle.font = this.labelStyle.font || "12px sans-serif";
            el.style.font = this.labelStyle.font;
            el.style.color = this.labelStyle.color || "black";
            if (this.labelStyle.fill) {
                el.style.background = this.labelStyle.fill;
            }
            if (this.labelStyle.borderWidth > 0) {
                var dStyle = this.labelStyle.borderStyle ? this.labelStyle.borderStyle : "black";
                el.style.border = this.labelStyle.borderWidth + "px solid " + dStyle;
            }
            if (this.labelStyle.padding) {
                el.style.padding = this.labelStyle.padding;
            }
        }

    };
    _ju.extend(_jp.Overlays.Label, _jp.Overlays.Custom, {
        cleanup: function (force) {
            if (force) {
                this.div = null;
                this.label = null;
                this.labelText = null;
                this.cssClass = null;
                this.labelStyle = null;
            }
        },
        getLabel: function () {
            return this.label;
        },
        /*
         * Function: setLabel
         * sets the label's, um, label.  you would think i'd call this function
         * 'setText', but you can pass either a Function or a String to this, so
         * it makes more sense as 'setLabel'. This uses innerHTML on the label div, so keep
         * that in mind if you need escaped HTML.
         */
        setLabel: function (l) {
            this.label = l;
            this.labelText = null;
            this.clearCachedDimensions();
            this.update();
            this.component.repaint();
        },
        getDimensions: function () {
            this.update();
            return AbstractDOMOverlay.prototype.getDimensions.apply(this, arguments);
        },
        update: function () {
            if (typeof this.label === "function") {
                var lt = this.label(this);
                this.getElement().innerHTML = lt.replace(/\r\n/g, "<br/>");
            }
            else {
                if (this.labelText == null) {
                    this.labelText = this.label;
                    this.getElement().innerHTML = this.labelText.replace(/\r\n/g, "<br/>");
                }
            }
        },
        updateFrom:function(d) {
            if(d.label != null){
                this.setLabel(d.label);
            }
        }
    });

    // ********************************* END OF OVERLAY DEFINITIONS ***********************************************************************

}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the base class for library adapters.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;(function() {
    "use strict";
    var root = this,
        _jp = root.jsPlumb;

    var _getEventManager = function(instance) {
        var e = instance._mottle;
        if (!e) {
            e = instance._mottle = new root.Mottle();
        }
        return e;
    };

    _jp.extend(root.jsPlumbInstance.prototype, {
        getEventManager:function() {
            return _getEventManager(this);
        },
        on : function(el, event, callback) {
            // TODO: here we would like to map the tap event if we know its
            // an internal bind to a click. we have to know its internal because only
            // then can we be sure that the UP event wont be consumed (tap is a synthesized
            // event from a mousedown followed by a mouseup).
            //event = { "click":"tap", "dblclick":"dbltap"}[event] || event;
            this.getEventManager().on.apply(this, arguments);
            return this;
        },
        off : function(el, event, callback) {
            this.getEventManager().off.apply(this, arguments);
            return this;
        }
    });


}).call(typeof window !== 'undefined' ? window : this);
/*
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;(function() {
    "use strict";

    var root = this,
        _ju = root.jsPlumbUtil,
        _jpi = root.jsPlumbInstance;

    var GROUP_COLLAPSED_CLASS = "jtk-group-collapsed";
    var GROUP_EXPANDED_CLASS = "jtk-group-expanded";
    var GROUP_CONTAINER_SELECTOR = "[jtk-group-content]";
    var ELEMENT_DRAGGABLE_EVENT = "elementDraggable";
    var STOP = "stop";
    var REVERT = "revert";
    var GROUP_MANAGER = "_groupManager";
    var GROUP = "_jsPlumbGroup";
    var GROUP_DRAG_SCOPE = "_jsPlumbGroupDrag";
    var EVT_CHILD_ADDED = "group:addMember";
    var EVT_CHILD_REMOVED = "group:removeMember";
    var EVT_GROUP_ADDED = "group:add";
    var EVT_GROUP_REMOVED = "group:remove";
    var EVT_EXPAND = "group:expand";
    var EVT_COLLAPSE = "group:collapse";
    var EVT_GROUP_DRAG_STOP = "groupDragStop";
    var EVT_CONNECTION_MOVED = "connectionMoved";
    var EVT_INTERNAL_CONNECTION_DETACHED = "internal.connectionDetached";

    var CMD_REMOVE_ALL = "removeAll";
    var CMD_ORPHAN_ALL = "orphanAll";
    var CMD_SHOW = "show";
    var CMD_HIDE = "hide";

    var GroupManager = function(_jsPlumb) {
        var _managedGroups = {}, _connectionSourceMap = {}, _connectionTargetMap = {}, self = this;

        _jsPlumb.bind("connection", function(p) {
            if (p.source[GROUP] != null && p.target[GROUP] != null && p.source[GROUP] === p.target[GROUP]) {
                _connectionSourceMap[p.connection.id] = p.source[GROUP];
                _connectionTargetMap[p.connection.id] = p.source[GROUP];
            }
            else {
                if (p.source[GROUP] != null) {
                    _ju.suggest(p.source[GROUP].connections.source, p.connection);
                    _connectionSourceMap[p.connection.id] = p.source[GROUP];
                }
                if (p.target[GROUP] != null) {
                    _ju.suggest(p.target[GROUP].connections.target, p.connection);
                    _connectionTargetMap[p.connection.id] = p.target[GROUP];
                }
            }
        });

        function _cleanupDetachedConnection(conn) {
            delete conn.proxies;
            var group = _connectionSourceMap[conn.id], f;
            if (group != null) {
                f = function(c) { return c.id === conn.id; };
                _ju.removeWithFunction(group.connections.source, f);
                _ju.removeWithFunction(group.connections.target, f);
                delete _connectionSourceMap[conn.id];
            }

            group = _connectionTargetMap[conn.id];
            if (group != null) {
                f = function(c) { return c.id === conn.id; };
                _ju.removeWithFunction(group.connections.source, f);
                _ju.removeWithFunction(group.connections.target, f);
                delete _connectionTargetMap[conn.id];
            }
        }

        _jsPlumb.bind(EVT_INTERNAL_CONNECTION_DETACHED, function(p) {
            _cleanupDetachedConnection(p.connection);
        });

        _jsPlumb.bind(EVT_CONNECTION_MOVED, function(p) {
            var connMap = p.index === 0 ? _connectionSourceMap : _connectionTargetMap;
            var group = connMap[p.connection.id];
            if (group) {
                var list = group.connections[p.index === 0 ? "source" : "target"];
                var idx = list.indexOf(p.connection);
                if (idx !== -1) {
                    list.splice(idx, 1);
                }
            }
        });

        this.addGroup = function(group) {
            _jsPlumb.addClass(group.getEl(), GROUP_EXPANDED_CLASS);
            _managedGroups[group.id] = group;
            group.manager = this;
            _updateConnectionsForGroup(group);
            _jsPlumb.fire(EVT_GROUP_ADDED, { group:group });
        };

        this.addToGroup = function(group, el, doNotFireEvent) {
            group = this.getGroup(group);
            if (group) {
                //group.add(el, doNotFireEvent);
                var groupEl = group.getEl();

                if (el._isJsPlumbGroup) {
                    return;
                }
                var currentGroup = el._jsPlumbGroup;
                // if already a member of this group, do nothing
                if (currentGroup !== group) {
                    var elpos = _jsPlumb.getOffset(el, true);
                    var cpos = group.collapsed ? _jsPlumb.getOffset(groupEl, true) : _jsPlumb.getOffset(group.getDragArea(), true);

                    // otherwise, transfer to this group.
                    if (currentGroup != null) {
                        currentGroup.remove(el, doNotFireEvent);
                        self.updateConnectionsForGroup(currentGroup);
                    }
                    group.add(el, doNotFireEvent);

                    var handleDroppedConnections = function (list, index) {
                        var oidx = index === 0 ? 1 : 0;
                        list.each(function (c) {
                            c.setVisible(false);
                            if (c.endpoints[oidx].element._jsPlumbGroup === group) {
                                c.endpoints[oidx].setVisible(false);
                                self.expandConnection(c, oidx, group);
                            }
                            else {
                                c.endpoints[index].setVisible(false);
                                self.collapseConnection(c, index, group);
                            }
                        });
                    };

                    if (group.collapsed) {
                        handleDroppedConnections(_jsPlumb.select({source: el}), 0);
                        handleDroppedConnections(_jsPlumb.select({target: el}), 1);
                    }

                    var elId = _jsPlumb.getId(el);
                    _jsPlumb.dragManager.setParent(el, elId, groupEl, _jsPlumb.getId(groupEl), elpos);

                    var newPosition = { left: elpos.left - cpos.left, top: elpos.top - cpos.top };

                    _jsPlumb.setPosition(el, newPosition);

                    _jsPlumb.dragManager.revalidateParent(el, elId, elpos);

                    self.updateConnectionsForGroup(group);

                    _jsPlumb.revalidate(elId);

                    setTimeout(function () {
                        _jsPlumb.fire(EVT_CHILD_ADDED, {group: group, el: el});
                    }, 0);
                }
            }
        };

        this.removeFromGroup = function(group, el, doNotFireEvent) {
            group = this.getGroup(group);
            if (group) {
                group.remove(el, null, doNotFireEvent);
            }
        };

        this.getGroup = function(groupId) {
            var group = groupId;
            if (_ju.isString(groupId)) {
                group = _managedGroups[groupId];
                if (group == null) {
                    throw new TypeError("No such group [" + groupId + "]");
                }
            }
            return group;
        };

        this.getGroups = function() {
            var o = [];
            for (var g in _managedGroups) {
                o.push(_managedGroups[g]);
            }
            return o;
        };

        this.removeGroup = function(group, deleteMembers, manipulateDOM, doNotFireEvent) {
            group = this.getGroup(group);
            this.expandGroup(group, true); // this reinstates any original connections and removes all proxies, but does not fire an event.
            group[deleteMembers ? CMD_REMOVE_ALL : CMD_ORPHAN_ALL](manipulateDOM, doNotFireEvent);
            _jsPlumb.remove(group.getEl());
            delete _managedGroups[group.id];
            delete _jsPlumb._groups[group.id];
            _jsPlumb.fire(EVT_GROUP_REMOVED, { group:group });
        };

        this.removeAllGroups = function(deleteMembers, manipulateDOM, doNotFireEvent) {
            for (var g in _managedGroups) {
                this.removeGroup(_managedGroups[g], deleteMembers, manipulateDOM, doNotFireEvent);
            }
        };

        function _setVisible(group, state) {
            var m = group.getMembers();
            for (var i = 0; i < m.length; i++) {
                _jsPlumb[state ? CMD_SHOW : CMD_HIDE](m[i], true);
            }
        }

        var _collapseConnection = this.collapseConnection = function(c, index, group) {

            var proxyEp, groupEl = group.getEl(), groupElId = _jsPlumb.getId(groupEl),
                originalElementId = c.endpoints[index].elementId;

            var otherEl = c.endpoints[index === 0 ? 1 : 0].element;
            if (otherEl[GROUP] && (!otherEl[GROUP].shouldProxy() && otherEl[GROUP].collapsed)) {
                return;
            }

            c.proxies = c.proxies || [];
            if(c.proxies[index]) {
                proxyEp = c.proxies[index].ep;
            }else {
                proxyEp = _jsPlumb.addEndpoint(groupEl, {
                    endpoint:group.getEndpoint(c, index),
                    anchor:group.getAnchor(c, index),
                    parameters:{
                        isProxyEndpoint:true
                    }
                });
            }
            proxyEp.setDeleteOnEmpty(true);

            // for this index, stash proxy info: the new EP, the original EP.
            c.proxies[index] = { ep:proxyEp, originalEp: c.endpoints[index] };

            // and advise the anchor manager
            if (index === 0) {
                // TODO why are there two differently named methods? Why is there not one method that says "some end of this
                // connection changed (you give the index), and here's the new element and element id."
                _jsPlumb.anchorManager.sourceChanged(originalElementId, groupElId, c, groupEl);
            }
            else {
                _jsPlumb.anchorManager.updateOtherEndpoint(c.endpoints[0].elementId, originalElementId, groupElId, c);
                c.target = groupEl;
                c.targetId = groupElId;
            }


            // detach the original EP from the connection.
            c.proxies[index].originalEp.detachFromConnection(c, null, true);

            // set the proxy as the new ep
            proxyEp.connections = [ c ];
            c.endpoints[index] = proxyEp;

            c.setVisible(true);
        };

        this.collapseGroup = function(group) {
            group = this.getGroup(group);
            if (group == null || group.collapsed) {
                return;
            }
            var groupEl = group.getEl();

            // todo remove old proxy endpoints first, just in case?
            //group.proxies.length = 0;

            // hide all connections
            _setVisible(group, false);

            if (group.shouldProxy()) {
                // collapses all connections in a group.
                var _collapseSet = function (conns, index) {
                    for (var i = 0; i < conns.length; i++) {
                        var c = conns[i];
                        _collapseConnection(c, index, group);
                    }
                };

                // setup proxies for sources and targets
                _collapseSet(group.connections.source, 0);
                _collapseSet(group.connections.target, 1);
            }

            group.collapsed = true;
            _jsPlumb.removeClass(groupEl, GROUP_EXPANDED_CLASS);
            _jsPlumb.addClass(groupEl, GROUP_COLLAPSED_CLASS);
            _jsPlumb.revalidate(groupEl);
            _jsPlumb.fire(EVT_COLLAPSE, { group:group  });
        };

        var _expandConnection = this.expandConnection = function(c, index, group) {

            // if no proxies or none for this end of the connection, abort.
            if (c.proxies == null || c.proxies[index] == null) {
                return;
            }

            var groupElId = _jsPlumb.getId(group.getEl()),
                originalElement = c.proxies[index].originalEp.element,
                originalElementId = c.proxies[index].originalEp.elementId;

            c.endpoints[index] = c.proxies[index].originalEp;
            // and advise the anchor manager
            if (index === 0) {
                // TODO why are there two differently named methods? Why is there not one method that says "some end of this
                // connection changed (you give the index), and here's the new element and element id."
                _jsPlumb.anchorManager.sourceChanged(groupElId, originalElementId, c, originalElement);
            }
            else {
                _jsPlumb.anchorManager.updateOtherEndpoint(c.endpoints[0].elementId, groupElId, originalElementId, c);
                c.target = originalElement;
                c.targetId = originalElementId;
            }

            // detach the proxy EP from the connection (which will cause it to be removed as we no longer need it)
            c.proxies[index].ep.detachFromConnection(c, null);

            c.proxies[index].originalEp.addConnection(c);

            // cleanup
            delete c.proxies[index];
        };

        this.expandGroup = function(group, doNotFireEvent) {

            group = this.getGroup(group);

            if (group == null || !group.collapsed) {
                return;
            }
            var groupEl = group.getEl();

            _setVisible(group, true);

            if (group.shouldProxy()) {
                // collapses all connections in a group.
                var _expandSet = function (conns, index) {
                    for (var i = 0; i < conns.length; i++) {
                        var c = conns[i];
                        _expandConnection(c, index, group);
                    }
                };

                // setup proxies for sources and targets
                _expandSet(group.connections.source, 0);
                _expandSet(group.connections.target, 1);
            }

            group.collapsed = false;
            _jsPlumb.addClass(groupEl, GROUP_EXPANDED_CLASS);
            _jsPlumb.removeClass(groupEl, GROUP_COLLAPSED_CLASS);
            _jsPlumb.revalidate(groupEl);
            this.repaintGroup(group);
            if (!doNotFireEvent) {
                _jsPlumb.fire(EVT_EXPAND, { group: group});
            }
        };

        this.repaintGroup = function(group) {
            group = this.getGroup(group);
            var m = group.getMembers();
            for (var i = 0; i < m.length; i++) {
                _jsPlumb.revalidate(m[i]);
            }
        };

        // TODO refactor this with the code that responds to `connection` events.
        function _updateConnectionsForGroup(group) {
            var members = group.getMembers();
            var c1 = _jsPlumb.getConnections({source:members, scope:"*"}, true);
            var c2 = _jsPlumb.getConnections({target:members, scope:"*"}, true);
            var processed = {};
            group.connections.source.length = 0;
            group.connections.target.length = 0;
            var oneSet = function(c) {
                for (var i = 0; i < c.length; i++) {
                    if (processed[c[i].id]) {
                        continue;
                    }
                    processed[c[i].id] = true;
                    if (c[i].source._jsPlumbGroup === group) {
                        if (c[i].target._jsPlumbGroup !== group) {
                            group.connections.source.push(c[i]);
                        }
                        _connectionSourceMap[c[i].id] = group;
                    }
                    else if (c[i].target._jsPlumbGroup === group) {
                        group.connections.target.push(c[i]);
                        _connectionTargetMap[c[i].id] = group;
                    }
                }
            };
            oneSet(c1); oneSet(c2);
        }

        this.updateConnectionsForGroup = _updateConnectionsForGroup;
        this.refreshAllGroups = function() {
            for (var g in _managedGroups) {
                _updateConnectionsForGroup(_managedGroups[g]);
                _jsPlumb.dragManager.updateOffsets(_jsPlumb.getId(_managedGroups[g].getEl()));
            }
        };
    };

    /**
     *
     * @param {jsPlumbInstance} _jsPlumb Associated jsPlumb instance.
     * @param {Object} params
     * @param {Element} params.el The DOM element representing the Group.
     * @param {String} [params.id] Optional ID for the Group. A UUID will be assigned as the Group's ID if you do not provide one.
     * @param {Boolean} [params.constrain=false] If true, child elements will not be able to be dragged outside of the Group container.
     * @param {Boolean} [params.revert=true] By default, child elements revert to the container if dragged outside. You can change this by setting `revert:false`. This behaviour is also overridden if you set `orphan` or `prune`.
     * @param {Boolean} [params.orphan=false] If true, child elements dropped outside of the Group container will be removed from the Group (but not from the DOM).
     * @param {Boolean} [params.prune=false] If true, child elements dropped outside of the Group container will be removed from the Group and also from the DOM.
     * @param {Boolean} [params.dropOverride=false] If true, a child element that has been dropped onto some other Group will not be subject to the controls imposed by `prune`, `revert` or `orphan`.
     * @constructor
     */
    var Group = function(_jsPlumb, params) {
        var self = this;
        var el = params.el;
        this.getEl = function() { return el; };
        this.id = params.id || _ju.uuid();
        el._isJsPlumbGroup = true;

        var getDragArea = this.getDragArea = function() {
            var da = _jsPlumb.getSelector(el, GROUP_CONTAINER_SELECTOR);
            return da && da.length > 0 ? da[0] : el;
        };

        var ghost = params.ghost === true;
        var constrain = ghost || (params.constrain === true);
        var revert = params.revert !== false;
        var orphan = params.orphan === true;
        var prune = params.prune === true;
        var dropOverride = params.dropOverride === true;
        var proxied = params.proxied !== false;
        var elements = [];
        this.connections = { source:[], target:[], internal:[] };

        // this function, and getEndpoint below, are stubs for a future setup in which we can choose endpoint
        // and anchor based upon the connection and the index (source/target) of the endpoint to be proxied.
        this.getAnchor = function(conn, endpointIndex) {
            return params.anchor || "Continuous";
        };

        this.getEndpoint = function(conn, endpointIndex) {
            return params.endpoint || [ "Dot", { radius:10 }];
        };

        this.collapsed = false;
        if (params.draggable !== false) {
            var opts = {
                stop:function(params) {
                    _jsPlumb.fire(EVT_GROUP_DRAG_STOP, jsPlumb.extend(params, {group:self}));
                },
                scope:GROUP_DRAG_SCOPE
            };
            if (params.dragOptions) {
                root.jsPlumb.extend(opts, params.dragOptions);
            }
            _jsPlumb.draggable(params.el, opts);
        }
        if (params.droppable !== false) {
            _jsPlumb.droppable(params.el, {
                drop:function(p) {
                    var el = p.drag.el;
                    if (el._isJsPlumbGroup) {
                        return;
                    }
                    var currentGroup = el._jsPlumbGroup;
                    if (currentGroup !== self) {
                        if (currentGroup != null) {
                            if (currentGroup.overrideDrop(el, self)) {
                                return;
                            }
                        }
                        _jsPlumb.getGroupManager().addToGroup(self, el, false);
                    }

                }
            });
        }
        var _each = function(_el, fn) {
            var els = _el.nodeType == null ?  _el : [ _el ];
            for (var i = 0; i < els.length; i++) {
                fn(els[i]);
            }
        };

        this.overrideDrop = function(_el, targetGroup) {
            return dropOverride && (revert || prune || orphan);
        };

        this.add = function(_el, doNotFireEvent) {
            var dragArea = getDragArea();
            _each(_el, function(__el) {

                if (__el._jsPlumbGroup != null) {
                    if (__el._jsPlumbGroup === self) {
                        return;
                    } else {
                        __el._jsPlumbGroup.remove(__el, true, doNotFireEvent, false);
                    }
                }

                __el._jsPlumbGroup = self;
                elements.push(__el);
                // test if draggable and add handlers if so.
                if (_jsPlumb.isAlreadyDraggable(__el)) {
                    _bindDragHandlers(__el);
                }

                if (__el.parentNode !== dragArea) {
                    dragArea.appendChild(__el);
                }

                if (!doNotFireEvent) {
                    _jsPlumb.fire(EVT_CHILD_ADDED, {group: self, el: __el});
                }
            });

            _jsPlumb.getGroupManager().updateConnectionsForGroup(self);
        };

        this.remove = function(el, manipulateDOM, doNotFireEvent, doNotUpdateConnections) {

            _each(el, function(__el) {
                delete __el._jsPlumbGroup;
                _ju.removeWithFunction(elements, function(e) {
                    return e === __el;
                });

                if (manipulateDOM) {
                    try { self.getDragArea().removeChild(__el); }
                    catch (e) {
                        jsPlumbUtil.log("Could not remove element from Group " + e);
                    }
                }
                _unbindDragHandlers(__el);
                if (!doNotFireEvent) {
                    _jsPlumb.fire(EVT_CHILD_REMOVED, {group: self, el: __el});
                }
            });
            if (!doNotUpdateConnections) {
                _jsPlumb.getGroupManager().updateConnectionsForGroup(self);
            }
        };
        this.removeAll = function(manipulateDOM, doNotFireEvent) {
            for (var i = 0, l = elements.length; i < l; i++) {
                self.remove(elements[0], manipulateDOM, doNotFireEvent, true);
            }
            elements.length = 0;
            _jsPlumb.getGroupManager().updateConnectionsForGroup(self);
        };
        this.orphanAll = function() {
            for (var i = 0; i < elements.length; i++) {
                _orphan(elements[i]);
            }
            elements.length = 0;
        };
        this.getMembers = function() { return elements; };

        el[GROUP] = this;

        _jsPlumb.bind(ELEMENT_DRAGGABLE_EVENT, function(dragParams) {
            // if its for the current group,
            if (dragParams.el._jsPlumbGroup === this) {
                _bindDragHandlers(dragParams.el);
            }
        }.bind(this));

        function _findParent(_el) {
            return _el.offsetParent;
        }

        function _isInsideParent(_el, pos) {
            var p = _findParent(_el),
                s = _jsPlumb.getSize(p),
                ss = _jsPlumb.getSize(_el),
                leftEdge = pos[0],
                rightEdge = leftEdge + ss[0],
                topEdge = pos[1],
                bottomEdge = topEdge + ss[1];

            return rightEdge > 0 && leftEdge < s[0] && bottomEdge > 0 && topEdge < s[1];
        }

        //
        // orphaning an element means taking it out of the group and adding it to the main jsplumb container.
        //
        function _orphan(_el) {
            var id = _jsPlumb.getId(_el);
            var pos = _jsPlumb.getOffset(_el);
            _el.parentNode.removeChild(_el);
            _jsPlumb.getContainer().appendChild(_el);
            _jsPlumb.setPosition(_el, pos);
            delete _el._jsPlumbGroup;
            _unbindDragHandlers(_el);
            _jsPlumb.dragManager.clearParent(_el, id);
        }

        //
        // remove an element from the group, then either prune it from the jsplumb instance, or just orphan it.
        //
        function _pruneOrOrphan(p) {
            if (!_isInsideParent(p.el, p.pos)) {
                var group = p.el._jsPlumbGroup;
                if (prune) {
                    _jsPlumb.remove(p.el);
                } else {
                    _orphan(p.el);
                }

                group.remove(p.el);
            }
        }

        //
        // redraws the element
        //
        function _revalidate(_el) {
            var id = _jsPlumb.getId(_el);
            _jsPlumb.revalidate(_el);
            _jsPlumb.dragManager.revalidateParent(_el, id);
        }

        //
        // unbind the group specific drag/revert handlers.
        //
        function _unbindDragHandlers(_el) {
            if (!_el._katavorioDrag) {
                return;
            }
            if (prune || orphan) {
                _el._katavorioDrag.off(STOP, _pruneOrOrphan);
            }
            if (!prune && !orphan && revert) {
                _el._katavorioDrag.off(REVERT, _revalidate);
                _el._katavorioDrag.setRevert(null);
            }
        }

        function _bindDragHandlers(_el) {
            if (!_el._katavorioDrag) {
                return;
            }
            if (prune || orphan) {
                _el._katavorioDrag.on(STOP, _pruneOrOrphan);
            }

            if (constrain) {
                _el._katavorioDrag.setConstrain(true);
            }

            if (ghost) {
                _el._katavorioDrag.setUseGhostProxy(true);
            }

            if (!prune && !orphan && revert) {
                _el._katavorioDrag.on(REVERT, _revalidate);
                _el._katavorioDrag.setRevert(function(__el, pos) {
                    return !_isInsideParent(__el, pos);
                });
            }
        }

        this.shouldProxy = function() {
            return proxied;
        };

        _jsPlumb.getGroupManager().addGroup(this);
    };

    /**
     * Adds a group to the jsPlumb instance.
     * @method addGroup
     * @param {Object} params
     * @return {Group} The newly created Group.
     */
    _jpi.prototype.addGroup = function(params) {
        var j = this;
        j._groups = j._groups || {};
        if (j._groups[params.id] != null) {
            throw new TypeError("cannot create Group [" + params.id + "]; a Group with that ID exists");
        }
        if (params.el[GROUP] != null) {
            throw new TypeError("cannot create Group [" + params.id + "]; the given element is already a Group");
        }
        var group = new Group(j, params);
        j._groups[group.id] = group;
        if (params.collapsed) {
            this.collapseGroup(group);
        }
        return group;
    };

    /**
     * Add an element to a group.
     * @method addToGroup
     * @param {String} group Group, or ID of the group, to add the element to.
     * @param {Element} el Element to add to the group.
     */
    _jpi.prototype.addToGroup = function(group, el, doNotFireEvent) {

        var _one = function(_el) {
            var id = this.getId(_el);
            this.manage(id, _el);
            this.getGroupManager().addToGroup(group, _el, doNotFireEvent);
        }.bind(this);

        if (Array.isArray(el)) {
            for (var i = 0; i < el.length; i++) {
                _one(el[i]);
            }
        } else {
            _one(el);
        }
    };

    /**
     * Remove an element from a group.
     * @method removeFromGroup
     * @param {String} group Group, or ID of the group, to remove the element from.
     * @param {Element} el Element to add to the group.
     */
    _jpi.prototype.removeFromGroup = function(group, el, doNotFireEvent) {
        this.getGroupManager().removeFromGroup(group, el, doNotFireEvent);
    };

    /**
     * Remove a group, and optionally remove its members from the jsPlumb instance.
     * @method removeGroup
     * @param {String|Group} group Group to delete, or ID of Group to delete.
     * @param {Boolean} [deleteMembers=false] If true, group members will be removed along with the group. Otherwise they will
     * just be 'orphaned' (returned to the main container).
     */
    _jpi.prototype.removeGroup = function(group, deleteMembers, manipulateDOM, doNotFireEvent) {
        this.getGroupManager().removeGroup(group, deleteMembers, manipulateDOM, doNotFireEvent);
    };

    /**
     * Remove all groups, and optionally remove their members from the jsPlumb instance.
     * @method removeAllGroup
     * @param {Boolean} [deleteMembers=false] If true, group members will be removed along with the groups. Otherwise they will
     * just be 'orphaned' (returned to the main container).
     */
    _jpi.prototype.removeAllGroups = function(deleteMembers, manipulateDOM, doNotFireEvent) {
        this.getGroupManager().removeAllGroups(deleteMembers, manipulateDOM, doNotFireEvent);
    };

    /**
     * Get a Group
     * @method getGroup
     * @param {String} groupId ID of the group to get
     * @return {Group} Group with the given ID, null if not found.
     */
    _jpi.prototype.getGroup = function(groupId) {
        return this.getGroupManager().getGroup(groupId);
    };

    /**
     * Gets all the Groups managed by the jsPlumb instance.
     * @returns {Group[]} List of Groups. Empty if none.
     */
    _jpi.prototype.getGroups = function() {
        return this.getGroupManager().getGroups();
    };

    /**
     * Expands a group element. jsPlumb doesn't do "everything" for you here, because what it means to expand a Group
     * will vary from application to application. jsPlumb does these things:
     *
     * - Hides any connections that are internal to the group (connections between members, and connections from member of
     * the group to the group itself)
     * - Proxies all connections for which the source or target is a member of the group.
     * - Hides the proxied connections.
     * - Adds the jtk-group-expanded class to the group's element
     * - Removes the jtk-group-collapsed class from the group's element.
     *
     * @method expandGroup
     * @param {String|Group} group Group to expand, or ID of Group to expand.
     */
    _jpi.prototype.expandGroup = function(group) {
        this.getGroupManager().expandGroup(group);
    };

    /**
     * Collapses a group element. jsPlumb doesn't do "everything" for you here, because what it means to collapse a Group
     * will vary from application to application. jsPlumb does these things:
     *
     * - Shows any connections that are internal to the group (connections between members, and connections from member of
     * the group to the group itself)
     * - Removes proxies for all connections for which the source or target is a member of the group.
     * - Shows the previously proxied connections.
     * - Adds the jtk-group-collapsed class to the group's element
     * - Removes the jtk-group-expanded class from the group's element.
     *
     * @method expandGroup
     * @param {String|Group} group Group to expand, or ID of Group to expand.
     */
    _jpi.prototype.collapseGroup = function(groupId) {
        this.getGroupManager().collapseGroup(groupId);
    };


    _jpi.prototype.repaintGroup = function(group) {
        this.getGroupManager().repaintGroup(group);
    };

    /**
     * Collapses or expands a group element depending on its current state. See notes in the collapseGroup and expandGroup method.
     *
     * @method toggleGroup
     * @param {String|Group} group Group to expand/collapse, or ID of Group to expand/collapse.
     */
    _jpi.prototype.toggleGroup = function(group) {
        group = this.getGroupManager().getGroup(group);
        if (group != null) {
            this.getGroupManager()[group.collapsed ? "expandGroup" : "collapseGroup"](group);
        }
    };

    //
    // lazy init a group manager for the given jsplumb instance.
    //
    _jpi.prototype.getGroupManager = function() {
        var mgr = this[GROUP_MANAGER];
        if (mgr == null) {
            mgr = this[GROUP_MANAGER] = new GroupManager(this);
        }
        return mgr;
    };

    _jpi.prototype.removeGroupManager = function() {
        delete this[GROUP_MANAGER];
    };

    /**
     * Gets the Group that the given element belongs to, null if none.
     * @method getGroupFor
     * @param {String|Element} el Element, or element ID.
     * @returns {Group} A Group, if found, or null.
     */
    _jpi.prototype.getGroupFor = function(el) {
        el = this.getElement(el);
        if (el) {
            return el[GROUP];
        }
    };

}).call(typeof window !== 'undefined' ? window : this);


/*
 * This file contains the 'flowchart' connectors, consisting of vertical and horizontal line segments.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;
    var STRAIGHT = "Straight";
    var ARC = "Arc";

    var Flowchart = function (params) {
        this.type = "Flowchart";
        params = params || {};
        params.stub = params.stub == null ? 30 : params.stub;
        var segments,
            _super = _jp.Connectors.AbstractConnector.apply(this, arguments),
            midpoint = params.midpoint == null ? 0.5 : params.midpoint,
            alwaysRespectStubs = params.alwaysRespectStubs === true,
            lastx = null, lasty = null, lastOrientation,
            cornerRadius = params.cornerRadius != null ? params.cornerRadius : 0,

            // TODO now common between this and AbstractBezierEditor; refactor into superclass?
            loopbackRadius = params.loopbackRadius || 25,
            isLoopbackCurrently = false,

            sgn = function (n) {
                return n < 0 ? -1 : n === 0 ? 0 : 1;
            },
            segmentDirections = function(segment) {
            return [
                    sgn( segment[2] - segment[0] ),
                    sgn( segment[3] - segment[1] )
                ];
            },
            /**
             * helper method to add a segment.
             */
            addSegment = function (segments, x, y, paintInfo) {
                if (lastx === x && lasty === y) {
                    return;
                }
                var lx = lastx == null ? paintInfo.sx : lastx,
                    ly = lasty == null ? paintInfo.sy : lasty,
                    o = lx === x ? "v" : "h";

                lastx = x;
                lasty = y;
                segments.push([ lx, ly, x, y, o ]);
            },
            segLength = function (s) {
                return Math.sqrt(Math.pow(s[0] - s[2], 2) + Math.pow(s[1] - s[3], 2));
            },
            _cloneArray = function (a) {
                var _a = [];
                _a.push.apply(_a, a);
                return _a;
            },
            writeSegments = function (conn, segments, paintInfo) {
                var current = null, next, currentDirection, nextDirection;
                for (var i = 0; i < segments.length - 1; i++) {

                    current = current || _cloneArray(segments[i]);
                    next = _cloneArray(segments[i + 1]);

                    currentDirection = segmentDirections(current);
                    nextDirection = segmentDirections(next);

                    if (cornerRadius > 0 && current[4] !== next[4]) {
                        var radiusToUse = Math.min(cornerRadius, segLength(current), segLength(next));

                        current[2] -= currentDirection[0] * radiusToUse;
                        current[3] -= currentDirection[1] * radiusToUse;
                        next[0] += nextDirection[0] * radiusToUse;
                        next[1] += nextDirection[1] * radiusToUse;

                        var ac = (currentDirection[1] === nextDirection[0] && nextDirection[0] === 1) ||
                                ((currentDirection[1] === nextDirection[0] && nextDirection[0] === 0) && currentDirection[0] !== nextDirection[1]) ||
                                (currentDirection[1] === nextDirection[0] && nextDirection[0] === -1),
                                sgny = next[1] > current[3] ? 1 : -1,
                                sgnx = next[0] > current[2] ? 1 : -1,
                                sgnEqual = sgny === sgnx,
                                cx = (sgnEqual && ac || (!sgnEqual && !ac)) ? next[0] : current[2],
                                cy = (sgnEqual && ac || (!sgnEqual && !ac)) ? current[3] : next[1];

                        _super.addSegment(conn, STRAIGHT, {
                            x1: current[0], y1: current[1], x2: current[2], y2: current[3]
                        });

                        _super.addSegment(conn, ARC, {
                            r: radiusToUse,
                            x1: current[2],
                            y1: current[3],
                            x2: next[0],
                            y2: next[1],
                            cx: cx,
                            cy: cy,
                            ac: ac
                        });
                    }
                    else {
                        // dx + dy are used to adjust for line width.
                        var dx = (current[2] === current[0]) ? 0 : (current[2] > current[0]) ? (paintInfo.lw / 2) : -(paintInfo.lw / 2),
                            dy = (current[3] === current[1]) ? 0 : (current[3] > current[1]) ? (paintInfo.lw / 2) : -(paintInfo.lw / 2);

                        _super.addSegment(conn, STRAIGHT, {
                            x1: current[0] - dx, y1: current[1] - dy, x2: current[2] + dx, y2: current[3] + dy
                        });
                    }
                    current = next;
                }
                if (next != null) {
                    // last segment
                    _super.addSegment(conn, STRAIGHT, {
                        x1: next[0], y1: next[1], x2: next[2], y2: next[3]
                    });
                }
            };

        this._compute = function (paintInfo, params) {

            segments = [];
            lastx = null;
            lasty = null;
            lastOrientation = null;

            var geometry = this.getGeometry(),
                sp = [ paintInfo.x, paintInfo.y ],
                tp = [ paintInfo.x + paintInfo.w, paintInfo.y + paintInfo.h ];

            if ((this.hasBeenEdited() || this.isEditing()) && geometry != null && geometry.segments != null && geometry.segments.length > 0) {
                segments = geometry.segments;

                _super.setGeometry({
                    segments:segments,
                    sourcePos:sp,
                    targetPos:tp
                });

            } else {

                var commonStubCalculator = function () {
                        return [paintInfo.startStubX, paintInfo.startStubY, paintInfo.endStubX, paintInfo.endStubY];
                    },
                    stubCalculators = {
                        perpendicular: commonStubCalculator,
                        orthogonal: commonStubCalculator,
                        opposite: function (axis) {
                            var pi = paintInfo,
                                idx = axis === "x" ? 0 : 1,
                                areInProximity = {
                                    "x": function () {
                                        return ( (pi.so[idx] === 1 && (
                                            ( (pi.startStubX > pi.endStubX) && (pi.tx > pi.startStubX) ) ||
                                            ( (pi.sx > pi.endStubX) && (pi.tx > pi.sx))))) ||

                                            ( (pi.so[idx] === -1 && (
                                            ( (pi.startStubX < pi.endStubX) && (pi.tx < pi.startStubX) ) ||
                                            ( (pi.sx < pi.endStubX) && (pi.tx < pi.sx)))));
                                    },
                                    "y": function () {
                                        return ( (pi.so[idx] === 1 && (
                                            ( (pi.startStubY > pi.endStubY) && (pi.ty > pi.startStubY) ) ||
                                            ( (pi.sy > pi.endStubY) && (pi.ty > pi.sy))))) ||

                                            ( (pi.so[idx] === -1 && (
                                            ( (pi.startStubY < pi.endStubY) && (pi.ty < pi.startStubY) ) ||
                                            ( (pi.sy < pi.endStubY) && (pi.ty < pi.sy)))));
                                    }
                                };

                            if (!alwaysRespectStubs && areInProximity[axis]()) {
                                return {
                                    "x": [(paintInfo.sx + paintInfo.tx) / 2, paintInfo.startStubY, (paintInfo.sx + paintInfo.tx) / 2, paintInfo.endStubY],
                                    "y": [paintInfo.startStubX, (paintInfo.sy + paintInfo.ty) / 2, paintInfo.endStubX, (paintInfo.sy + paintInfo.ty) / 2]
                                }[axis];
                            }
                            else {
                                return [paintInfo.startStubX, paintInfo.startStubY, paintInfo.endStubX, paintInfo.endStubY];
                            }
                        }
                    };

                // calculate Stubs.
                var stubs = stubCalculators[paintInfo.anchorOrientation](paintInfo.sourceAxis),
                    idx = paintInfo.sourceAxis === "x" ? 0 : 1,
                    oidx = paintInfo.sourceAxis === "x" ? 1 : 0,
                    ss = stubs[idx],
                    oss = stubs[oidx],
                    es = stubs[idx + 2],
                    oes = stubs[oidx + 2];

                // add the start stub segment. use stubs for loopback as it will look better, with the loop spaced
                // away from the element.
                addSegment(segments, stubs[0], stubs[1], paintInfo);

                // if its a loopback and we should treat it differently.
                // if (false && params.sourcePos[0] === params.targetPos[0] && params.sourcePos[1] === params.targetPos[1]) {
                //
                //     // we use loopbackRadius here, as statemachine connectors do.
                //     // so we go radius to the left from stubs[0], then upwards by 2*radius, to the right by 2*radius,
                //     // down by 2*radius, left by radius.
                //     addSegment(segments, stubs[0] - loopbackRadius, stubs[1], paintInfo);
                //     addSegment(segments, stubs[0] - loopbackRadius, stubs[1] - (2 * loopbackRadius), paintInfo);
                //     addSegment(segments, stubs[0] + loopbackRadius, stubs[1] - (2 * loopbackRadius), paintInfo);
                //     addSegment(segments, stubs[0] + loopbackRadius, stubs[1], paintInfo);
                //     addSegment(segments, stubs[0], stubs[1], paintInfo);
                //
                // }
                // else {


                    var midx = paintInfo.startStubX + ((paintInfo.endStubX - paintInfo.startStubX) * midpoint),
                        midy = paintInfo.startStubY + ((paintInfo.endStubY - paintInfo.startStubY) * midpoint);

                    var orientations = {x: [0, 1], y: [1, 0]},
                        lineCalculators = {
                            perpendicular: function (axis) {
                                var pi = paintInfo,
                                    sis = {
                                        x: [
                                            [[1, 2, 3, 4], null, [2, 1, 4, 3]],
                                            null,
                                            [[4, 3, 2, 1], null, [3, 4, 1, 2]]
                                        ],
                                        y: [
                                            [[3, 2, 1, 4], null, [2, 3, 4, 1]],
                                            null,
                                            [[4, 1, 2, 3], null, [1, 4, 3, 2]]
                                        ]
                                    },
                                    stubs = {
                                        x: [[pi.startStubX, pi.endStubX], null, [pi.endStubX, pi.startStubX]],
                                        y: [[pi.startStubY, pi.endStubY], null, [pi.endStubY, pi.startStubY]]
                                    },
                                    midLines = {
                                        x: [[midx, pi.startStubY], [midx, pi.endStubY]],
                                        y: [[pi.startStubX, midy], [pi.endStubX, midy]]
                                    },
                                    linesToEnd = {
                                        x: [[pi.endStubX, pi.startStubY]],
                                        y: [[pi.startStubX, pi.endStubY]]
                                    },
                                    startToEnd = {
                                        x: [[pi.startStubX, pi.endStubY], [pi.endStubX, pi.endStubY]],
                                        y: [[pi.endStubX, pi.startStubY], [pi.endStubX, pi.endStubY]]
                                    },
                                    startToMidToEnd = {
                                        x: [[pi.startStubX, midy], [pi.endStubX, midy], [pi.endStubX, pi.endStubY]],
                                        y: [[midx, pi.startStubY], [midx, pi.endStubY], [pi.endStubX, pi.endStubY]]
                                    },
                                    otherStubs = {
                                        x: [pi.startStubY, pi.endStubY],
                                        y: [pi.startStubX, pi.endStubX]
                                    },
                                    soIdx = orientations[axis][0], toIdx = orientations[axis][1],
                                    _so = pi.so[soIdx] + 1,
                                    _to = pi.to[toIdx] + 1,
                                    otherFlipped = (pi.to[toIdx] === -1 && (otherStubs[axis][1] < otherStubs[axis][0])) || (pi.to[toIdx] === 1 && (otherStubs[axis][1] > otherStubs[axis][0])),
                                    stub1 = stubs[axis][_so][0],
                                    stub2 = stubs[axis][_so][1],
                                    segmentIndexes = sis[axis][_so][_to];

                                if (pi.segment === segmentIndexes[3] || (pi.segment === segmentIndexes[2] && otherFlipped)) {
                                    return midLines[axis];
                                }
                                else if (pi.segment === segmentIndexes[2] && stub2 < stub1) {
                                    return linesToEnd[axis];
                                }
                                else if ((pi.segment === segmentIndexes[2] && stub2 >= stub1) || (pi.segment === segmentIndexes[1] && !otherFlipped)) {
                                    return startToMidToEnd[axis];
                                }
                                else if (pi.segment === segmentIndexes[0] || (pi.segment === segmentIndexes[1] && otherFlipped)) {
                                    return startToEnd[axis];
                                }
                            },
                            orthogonal: function (axis, startStub, otherStartStub, endStub, otherEndStub) {
                                var pi = paintInfo,
                                    extent = {
                                        "x": pi.so[0] === -1 ? Math.min(startStub, endStub) : Math.max(startStub, endStub),
                                        "y": pi.so[1] === -1 ? Math.min(startStub, endStub) : Math.max(startStub, endStub)
                                    }[axis];

                                return {
                                    "x": [
                                        [extent, otherStartStub],
                                        [extent, otherEndStub],
                                        [endStub, otherEndStub]
                                    ],
                                    "y": [
                                        [otherStartStub, extent],
                                        [otherEndStub, extent],
                                        [otherEndStub, endStub]
                                    ]
                                }[axis];
                            },
                            opposite: function (axis, ss, oss, es) {
                                var pi = paintInfo,
                                    otherAxis = {"x": "y", "y": "x"}[axis],
                                    dim = {"x": "height", "y": "width"}[axis],
                                    comparator = pi["is" + axis.toUpperCase() + "GreaterThanStubTimes2"];

                                if (params.sourceEndpoint.elementId === params.targetEndpoint.elementId) {
                                    var _val = oss + ((1 - params.sourceEndpoint.anchor[otherAxis]) * params.sourceInfo[dim]) + _super.maxStub;
                                    return {
                                        "x": [
                                            [ss, _val],
                                            [es, _val]
                                        ],
                                        "y": [
                                            [_val, ss],
                                            [_val, es]
                                        ]
                                    }[axis];

                                }
                                else if (!comparator || (pi.so[idx] === 1 && ss > es) || (pi.so[idx] === -1 && ss < es)) {
                                    return {
                                        "x": [
                                            [ss, midy],
                                            [es, midy]
                                        ],
                                        "y": [
                                            [midx, ss],
                                            [midx, es]
                                        ]
                                    }[axis];
                                }
                                else if ((pi.so[idx] === 1 && ss < es) || (pi.so[idx] === -1 && ss > es)) {
                                    return {
                                        "x": [
                                            [midx, pi.sy],
                                            [midx, pi.ty]
                                        ],
                                        "y": [
                                            [pi.sx, midy],
                                            [pi.tx, midy]
                                        ]
                                    }[axis];
                                }
                            }
                        };

                    // compute the rest of the line
                    var p = lineCalculators[paintInfo.anchorOrientation](paintInfo.sourceAxis, ss, oss, es, oes);
                    if (p) {
                        for (var i = 0; i < p.length; i++) {
                            addSegment(segments, p[i][0], p[i][1], paintInfo);
                        }
                    }

                    // line to end stub
                    addSegment(segments, stubs[2], stubs[3], paintInfo);

                //}

                // end stub to end (common)
                addSegment(segments, paintInfo.tx, paintInfo.ty, paintInfo);

                _super.setGeometry({
                    segments:segments,
                    sourcePos:sp,
                    targetPos:tp
                }, true);
            }

            // write out the segments.
            writeSegments(this, segments, paintInfo);

        };
    };

    _jp.Connectors.Flowchart = Flowchart;
    _ju.extend(_jp.Connectors.Flowchart, _jp.Connectors.AbstractConnector);

}).call(typeof window !== 'undefined' ? window : this);
/*
 * This file contains the code for the Bezier connector type.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;

    _jp.Connectors.AbstractBezierConnector = function(params) {
        params = params || {};
        var showLoopback = params.showLoopback !== false,
            curviness = params.curviness || 10,
            margin = params.margin || 5,
            proximityLimit = params.proximityLimit || 80,
            clockwise = params.orientation && params.orientation === "clockwise",
            loopbackRadius = params.loopbackRadius || 25,
            isLoopbackCurrently = false,
            _super;

        this.overrideSetEditable = function() { return !isLoopbackCurrently; };

        this._compute = function (paintInfo, p) {

            var sp = p.sourcePos,
                tp = p.targetPos,
                _w = Math.abs(sp[0] - tp[0]),
                _h = Math.abs(sp[1] - tp[1]);

            if (!showLoopback || (p.sourceEndpoint.elementId !== p.targetEndpoint.elementId)) {
                isLoopbackCurrently = false;
                this._computeBezier(paintInfo, p, sp, tp, _w, _h);
            } else {
                isLoopbackCurrently = true;
                // a loopback connector.  draw an arc from one anchor to the other.
                var x1 = p.sourcePos[0], y1 = p.sourcePos[1] - margin,
                    cx = x1, cy = y1 - loopbackRadius,
                // canvas sizing stuff, to ensure the whole painted area is visible.
                    _x = cx - loopbackRadius,
                    _y = cy - loopbackRadius;

                _w = 2 * loopbackRadius;
                _h = 2 * loopbackRadius;

                paintInfo.points[0] = _x;
                paintInfo.points[1] = _y;
                paintInfo.points[2] = _w;
                paintInfo.points[3] = _h;

                // ADD AN ARC SEGMENT.
                _super.addSegment(this, "Arc", {
                    loopback: true,
                    x1: (x1 - _x) + 4,
                    y1: y1 - _y,
                    startAngle: 0,
                    endAngle: 2 * Math.PI,
                    r: loopbackRadius,
                    ac: !clockwise,
                    x2: (x1 - _x) - 4,
                    y2: y1 - _y,
                    cx: cx - _x,
                    cy: cy - _y
                });
            }
        };

        _super = _jp.Connectors.AbstractConnector.apply(this, arguments);
        return _super;
    };
    _ju.extend(_jp.Connectors.AbstractBezierConnector, _jp.Connectors.AbstractConnector);

    var Bezier = function (params) {
        params = params || {};
        this.type = "Bezier";

        var _super = _jp.Connectors.AbstractBezierConnector.apply(this, arguments),
            majorAnchor = params.curviness || 150,
            minorAnchor = 10;

        this.getCurviness = function () {
            return majorAnchor;
        };

        this._findControlPoint = function (point, sourceAnchorPosition, targetAnchorPosition, sourceEndpoint, targetEndpoint, soo, too) {
            // determine if the two anchors are perpendicular to each other in their orientation.  we swap the control
            // points around if so (code could be tightened up)
            var perpendicular = soo[0] !== too[0] || soo[1] === too[1],
                p = [];

            if (!perpendicular) {
                if (soo[0] === 0) {
                    p.push(sourceAnchorPosition[0] < targetAnchorPosition[0] ? point[0] + minorAnchor : point[0] - minorAnchor);
                }
                else {
                    p.push(point[0] - (majorAnchor * soo[0]));
                }

                if (soo[1] === 0) {
                    p.push(sourceAnchorPosition[1] < targetAnchorPosition[1] ? point[1] + minorAnchor : point[1] - minorAnchor);
                }
                else {
                    p.push(point[1] + (majorAnchor * too[1]));
                }
            }
            else {
                if (too[0] === 0) {
                    p.push(targetAnchorPosition[0] < sourceAnchorPosition[0] ? point[0] + minorAnchor : point[0] - minorAnchor);
                }
                else {
                    p.push(point[0] + (majorAnchor * too[0]));
                }

                if (too[1] === 0) {
                    p.push(targetAnchorPosition[1] < sourceAnchorPosition[1] ? point[1] + minorAnchor : point[1] - minorAnchor);
                }
                else {
                    p.push(point[1] + (majorAnchor * soo[1]));
                }
            }

            return p;
        };

        this._computeBezier = function (paintInfo, p, sp, tp, _w, _h) {

            var geometry = this.getGeometry(), _CP, _CP2,
                _sx = sp[0] < tp[0] ? _w : 0,
                _sy = sp[1] < tp[1] ? _h : 0,
                _tx = sp[0] < tp[0] ? 0 : _w,
                _ty = sp[1] < tp[1] ? 0 : _h;

            if ((this.hasBeenEdited() || this.isEditing()) && geometry != null && geometry.controlPoints != null && geometry.controlPoints[0] != null && geometry.controlPoints[1] != null) {
                _CP = geometry.controlPoints[0];
                _CP2 = geometry.controlPoints[1];
            }
            else {
                _CP = this._findControlPoint([_sx, _sy], sp, tp, p.sourceEndpoint, p.targetEndpoint, paintInfo.so, paintInfo.to);
                _CP2 = this._findControlPoint([_tx, _ty], tp, sp, p.targetEndpoint, p.sourceEndpoint, paintInfo.to, paintInfo.so);
            }

            _super.setGeometry({
                controlPoints:[_CP, _CP2],
                sourcePos:sp,
                targetPos:tp
            }, true);

            _super.addSegment(this, "Bezier", {
                x1: _sx, y1: _sy, x2: _tx, y2: _ty,
                cp1x: _CP[0], cp1y: _CP[1], cp2x: _CP2[0], cp2y: _CP2[1]
            });
        };


    };

    _jp.Connectors.Bezier = Bezier;
    _ju.extend(Bezier, _jp.Connectors.AbstractBezierConnector);

}).call(typeof window !== 'undefined' ? window : this);
/*
 * This file contains the state machine connectors, which extend AbstractBezierConnector.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 * 
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;

    var _segment = function (x1, y1, x2, y2) {
            if (x1 <= x2 && y2 <= y1) {
                return 1;
            }
            else if (x1 <= x2 && y1 <= y2) {
                return 2;
            }
            else if (x2 <= x1 && y2 >= y1) {
                return 3;
            }
            return 4;
        },

    // the control point we will use depends on the faces to which each end of the connection is assigned, specifically whether or not the
    // two faces are parallel or perpendicular.  if they are parallel then the control point lies on the midpoint of the axis in which they
    // are parellel and varies only in the other axis; this variation is proportional to the distance that the anchor points lie from the
    // center of that face.  if the two faces are perpendicular then the control point is at some distance from both the midpoints; the amount and
    // direction are dependent on the orientation of the two elements. 'seg', passed in to this method, tells you which segment the target element
    // lies in with respect to the source: 1 is top right, 2 is bottom right, 3 is bottom left, 4 is top left.
    //
    // sourcePos and targetPos are arrays of info about where on the source and target each anchor is located.  their contents are:
    //
    // 0 - absolute x
    // 1 - absolute y
    // 2 - proportional x in element (0 is left edge, 1 is right edge)
    // 3 - proportional y in element (0 is top edge, 1 is bottom edge)
    //
        _findControlPoint = function (midx, midy, segment, sourceEdge, targetEdge, dx, dy, distance, proximityLimit) {
            // TODO (maybe)
            // - if anchor pos is 0.5, make the control point take into account the relative position of the elements.
            if (distance <= proximityLimit) {
                return [midx, midy];
            }

            if (segment === 1) {
                if (sourceEdge[3] <= 0 && targetEdge[3] >= 1) {
                    return [ midx + (sourceEdge[2] < 0.5 ? -1 * dx : dx), midy ];
                }
                else if (sourceEdge[2] >= 1 && targetEdge[2] <= 0) {
                    return [ midx, midy + (sourceEdge[3] < 0.5 ? -1 * dy : dy) ];
                }
                else {
                    return [ midx + (-1 * dx) , midy + (-1 * dy) ];
                }
            }
            else if (segment === 2) {
                if (sourceEdge[3] >= 1 && targetEdge[3] <= 0) {
                    return [ midx + (sourceEdge[2] < 0.5 ? -1 * dx : dx), midy ];
                }
                else if (sourceEdge[2] >= 1 && targetEdge[2] <= 0) {
                    return [ midx, midy + (sourceEdge[3] < 0.5 ? -1 * dy : dy) ];
                }
                else {
                    return [ midx + dx, midy + (-1 * dy) ];
                }
            }
            else if (segment === 3) {
                if (sourceEdge[3] >= 1 && targetEdge[3] <= 0) {
                    return [ midx + (sourceEdge[2] < 0.5 ? -1 * dx : dx), midy ];
                }
                else if (sourceEdge[2] <= 0 && targetEdge[2] >= 1) {
                    return [ midx, midy + (sourceEdge[3] < 0.5 ? -1 * dy : dy) ];
                }
                else {
                    return [ midx + (-1 * dx) , midy + (-1 * dy) ];
                }
            }
            else if (segment === 4) {
                if (sourceEdge[3] <= 0 && targetEdge[3] >= 1) {
                    return [ midx + (sourceEdge[2] < 0.5 ? -1 * dx : dx), midy ];
                }
                else if (sourceEdge[2] <= 0 && targetEdge[2] >= 1) {
                    return [ midx, midy + (sourceEdge[3] < 0.5 ? -1 * dy : dy) ];
                }
                else {
                    return [ midx + dx , midy + (-1 * dy) ];
                }
            }

        };

    var StateMachine = function (params) {
        params = params || {};
        this.type = "StateMachine";

        var _super = _jp.Connectors.AbstractBezierConnector.apply(this, arguments),
            curviness = params.curviness || 10,
            margin = params.margin || 5,
            proximityLimit = params.proximityLimit || 80,
            clockwise = params.orientation && params.orientation === "clockwise",
            _controlPoint;

        this._computeBezier = function(paintInfo, params, sp, tp, w, h) {
            var _sx = params.sourcePos[0] < params.targetPos[0] ? 0 : w,
                _sy = params.sourcePos[1] < params.targetPos[1] ? 0 : h,
                _tx = params.sourcePos[0] < params.targetPos[0] ? w : 0,
                _ty = params.sourcePos[1] < params.targetPos[1] ? h : 0;

            // now adjust for the margin
            if (params.sourcePos[2] === 0) {
                _sx -= margin;
            }
            if (params.sourcePos[2] === 1) {
                _sx += margin;
            }
            if (params.sourcePos[3] === 0) {
                _sy -= margin;
            }
            if (params.sourcePos[3] === 1) {
                _sy += margin;
            }
            if (params.targetPos[2] === 0) {
                _tx -= margin;
            }
            if (params.targetPos[2] === 1) {
                _tx += margin;
            }
            if (params.targetPos[3] === 0) {
                _ty -= margin;
            }
            if (params.targetPos[3] === 1) {
                _ty += margin;
            }

            //
            // these connectors are quadratic bezier curves, having a single control point. if both anchors
            // are located at 0.5 on their respective faces, the control point is set to the midpoint and you
            // get a straight line.  this is also the case if the two anchors are within 'proximityLimit', since
            // it seems to make good aesthetic sense to do that. outside of that, the control point is positioned
            // at 'curviness' pixels away along the normal to the straight line connecting the two anchors.
            //
            // there may be two improvements to this.  firstly, we might actually support the notion of avoiding nodes
            // in the UI, or at least making a good effort at doing so.  if a connection would pass underneath some node,
            // for example, we might increase the distance the control point is away from the midpoint in a bid to
            // steer it around that node.  this will work within limits, but i think those limits would also be the likely
            // limits for, once again, aesthetic good sense in the layout of a chart using these connectors.
            //
            // the second possible change is actually two possible changes: firstly, it is possible we should gradually
            // decrease the 'curviness' as the distance between the anchors decreases; start tailing it off to 0 at some
            // point (which should be configurable).  secondly, we might slightly increase the 'curviness' for connectors
            // with respect to how far their anchor is from the center of its respective face. this could either look cool,
            // or stupid, and may indeed work only in a way that is so subtle as to have been a waste of time.
            //

            var _midx = (_sx + _tx) / 2,
                _midy = (_sy + _ty) / 2,
                segment = _segment(_sx, _sy, _tx, _ty),
                distance = Math.sqrt(Math.pow(_tx - _sx, 2) + Math.pow(_ty - _sy, 2)),
                cp1x, cp2x, cp1y, cp2y,
                geometry = _super.getGeometry();

            if ((this.hasBeenEdited() || this.isEditing()) && geometry != null) {
                cp1x = geometry.controlPoints[0][0];
                cp1y = geometry.controlPoints[0][1];
                cp2x = geometry.controlPoints[1][0];
                cp2y = geometry.controlPoints[1][1];
            }
            else {
                // calculate the control point.  this code will be where we'll put in a rudimentary element avoidance scheme; it
                // will work by extending the control point to force the curve to be, um, curvier.
                _controlPoint = _findControlPoint(_midx,
                    _midy,
                    segment,
                    params.sourcePos,
                    params.targetPos,
                    curviness, curviness,
                    distance,
                    proximityLimit);

                cp1x = _controlPoint[0];
                cp2x = _controlPoint[0];
                cp1y = _controlPoint[1];
                cp2y = _controlPoint[1];

                _super.setGeometry({
                    controlPoints:[_controlPoint, _controlPoint],
                    sourcePos:sp,
                    targetPos:tp,
                    quadrant:segment,
                    curviness:curviness
                }, true);
            }

            _super.addSegment(this, "Bezier", {
                x1: _tx, y1: _ty, x2: _sx, y2: _sy,
                cp1x: cp1x, cp1y: cp1y,
                cp2x: cp2x, cp2y: cp2y
            });
        };
    };

    _jp.Connectors.StateMachine = StateMachine;
    _ju.extend(StateMachine, _jp.Connectors.AbstractBezierConnector);

}).call(typeof window !== 'undefined' ? window : this);
/*
 * This file contains the 'flowchart' connectors, consisting of vertical and horizontal line segments.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 *
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 *
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;
    var STRAIGHT = "Straight";

    var Straight = function (params) {
        this.type = STRAIGHT;
        var _super = _jp.Connectors.AbstractConnector.apply(this, arguments);

        this._compute = function (paintInfo, _) {
            _super.addSegment(this, STRAIGHT, {x1: paintInfo.sx, y1: paintInfo.sy, x2: paintInfo.startStubX, y2: paintInfo.startStubY});
            _super.addSegment(this, STRAIGHT, {x1: paintInfo.startStubX, y1: paintInfo.startStubY, x2: paintInfo.endStubX, y2: paintInfo.endStubY});
            _super.addSegment(this, STRAIGHT, {x1: paintInfo.endStubX, y1: paintInfo.endStubY, x2: paintInfo.tx, y2: paintInfo.ty});
        };
    };

    _jp.Connectors.Straight = Straight;
    _ju.extend(Straight, _jp.Connectors.AbstractConnector);

}).call(typeof window !== 'undefined' ? window : this);
/*
 * This file contains the SVG renderers.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 * 
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 * 
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

// ************************** SVG utility methods ********************************************	

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil;

    var svgAttributeMap = {
            "stroke-linejoin": "stroke-linejoin",
            "stroke-dashoffset": "stroke-dashoffset",
            "stroke-linecap": "stroke-linecap"
        },
        STROKE_DASHARRAY = "stroke-dasharray",
        DASHSTYLE = "dashstyle",
        LINEAR_GRADIENT = "linearGradient",
        RADIAL_GRADIENT = "radialGradient",
        DEFS = "defs",
        FILL = "fill",
        STOP = "stop",
        STROKE = "stroke",
        STROKE_WIDTH = "stroke-width",
        STYLE = "style",
        NONE = "none",
        JSPLUMB_GRADIENT = "jsplumb_gradient_",
        LINE_WIDTH = "strokeWidth",
        ns = {
            svg: "http://www.w3.org/2000/svg"
        },
        _attr = function (node, attributes) {
            for (var i in attributes) {
                node.setAttribute(i, "" + attributes[i]);
            }
        },
        _node = function (name, attributes) {
            attributes = attributes || {};
            attributes.version = "1.1";
            attributes.xmlns = ns.svg;
            return _jp.createElementNS(ns.svg, name, null, null, attributes);
        },
        _pos = function (d) {
            return "position:absolute;left:" + d[0] + "px;top:" + d[1] + "px";
        },
        _clearGradient = function (parent) {
            var els = parent.querySelectorAll(" defs,linearGradient,radialGradient");
            for (var i = 0; i < els.length; i++) {
                els[i].parentNode.removeChild(els[i]);
            }
        },
        _updateGradient = function (parent, node, style, dimensions, uiComponent) {
            var id = JSPLUMB_GRADIENT + uiComponent._jsPlumb.instance.idstamp();
            // first clear out any existing gradient
            _clearGradient(parent);
            // this checks for an 'offset' property in the gradient, and in the absence of it, assumes
            // we want a linear gradient. if it's there, we create a radial gradient.
            // it is possible that a more explicit means of defining the gradient type would be
            // better. relying on 'offset' means that we can never have a radial gradient that uses
            // some default offset, for instance.
            // issue 244 suggested the 'gradientUnits' attribute; without this, straight/flowchart connectors with gradients would
            // not show gradients when the line was perfectly horizontal or vertical.
            var g;
            if (!style.gradient.offset) {
                g = _node(LINEAR_GRADIENT, {id: id, gradientUnits: "userSpaceOnUse"});
            }
            else {
                g = _node(RADIAL_GRADIENT, { id: id });
            }

            var defs = _node(DEFS);
            parent.appendChild(defs);
            defs.appendChild(g);

            // the svg radial gradient seems to treat stops in the reverse
            // order to how canvas does it.  so we want to keep all the maths the same, but
            // iterate the actual style declarations in reverse order, if the x indexes are not in order.
            for (var i = 0; i < style.gradient.stops.length; i++) {
                var styleToUse = uiComponent.segment === 1 || uiComponent.segment === 2 ? i : style.gradient.stops.length - 1 - i,
                    stopColor = style.gradient.stops[styleToUse][1],
                    s = _node(STOP, {"offset": Math.floor(style.gradient.stops[i][0] * 100) + "%", "stop-color": stopColor});

                g.appendChild(s);
            }
            var applyGradientTo = style.stroke ? STROKE : FILL;
            node.setAttribute(applyGradientTo, "url(#" + id + ")");
        },
        _applyStyles = function (parent, node, style, dimensions, uiComponent) {

            node.setAttribute(FILL, style.fill ? style.fill : NONE);
            node.setAttribute(STROKE, style.stroke ? style.stroke : NONE);

            if (style.gradient) {
                _updateGradient(parent, node, style, dimensions, uiComponent);
            }
            else {
                // make sure we clear any existing gradient
                _clearGradient(parent);
                node.setAttribute(STYLE, "");
            }

            if (style.strokeWidth) {
                node.setAttribute(STROKE_WIDTH, style.strokeWidth);
            }

            // in SVG there is a stroke-dasharray attribute we can set, and its syntax looks like
            // the syntax in VML but is actually kind of nasty: values are given in the pixel
            // coordinate space, whereas in VML they are multiples of the width of the stroked
            // line, which makes a lot more sense.  for that reason, jsPlumb is supporting both
            // the native svg 'stroke-dasharray' attribute, and also the 'dashstyle' concept from
            // VML, which will be the preferred method.  the code below this converts a dashstyle
            // attribute given in terms of stroke width into a pixel representation, by using the
            // stroke's lineWidth.
            if (style[DASHSTYLE] && style[LINE_WIDTH] && !style[STROKE_DASHARRAY]) {
                var sep = style[DASHSTYLE].indexOf(",") === -1 ? " " : ",",
                    parts = style[DASHSTYLE].split(sep),
                    styleToUse = "";
                parts.forEach(function (p) {
                    styleToUse += (Math.floor(p * style.strokeWidth) + sep);
                });
                node.setAttribute(STROKE_DASHARRAY, styleToUse);
            }
            else if (style[STROKE_DASHARRAY]) {
                node.setAttribute(STROKE_DASHARRAY, style[STROKE_DASHARRAY]);
            }

            // extra attributes such as join type, dash offset.
            for (var i in svgAttributeMap) {
                if (style[i]) {
                    node.setAttribute(svgAttributeMap[i], style[i]);
                }
            }
        },
        _appendAtIndex = function (svg, path, idx) {
            if (svg.childNodes.length > idx) {
                svg.insertBefore(path, svg.childNodes[idx]);
            }
            else {
                svg.appendChild(path);
            }
        };

    /**
     utility methods for other objects to use.
     */
    _ju.svg = {
        node: _node,
        attr: _attr,
        pos: _pos
    };

    // ************************** / SVG utility methods ********************************************

    /*
     * Base class for SVG components.
     */
    var SvgComponent = function (params) {
        var pointerEventsSpec = params.pointerEventsSpec || "all", renderer = {};

        _jp.jsPlumbUIComponent.apply(this, params.originalArgs);
        this.canvas = null;
        this.path = null;
        this.svg = null;
        this.bgCanvas = null;

        var clazz = params.cssClass + " " + (params.originalArgs[0].cssClass || ""),
            svgParams = {
                "style": "",
                "width": 0,
                "height": 0,
                "pointer-events": pointerEventsSpec,
                "position": "absolute"
            };

        this.svg = _node("svg", svgParams);

        if (params.useDivWrapper) {
            this.canvas = _jp.createElement("div", { position : "absolute" });
            _ju.sizeElement(this.canvas, 0, 0, 1, 1);
            this.canvas.className = clazz;
        }
        else {
            _attr(this.svg, { "class": clazz });
            this.canvas = this.svg;
        }

        params._jsPlumb.appendElement(this.canvas, params.originalArgs[0].parent);
        if (params.useDivWrapper) {
            this.canvas.appendChild(this.svg);
        }

        var displayElements = [ this.canvas ];
        this.getDisplayElements = function () {
            return displayElements;
        };

        this.appendDisplayElement = function (el) {
            displayElements.push(el);
        };

        this.paint = function (style, anchor, extents) {
            if (style != null) {

                var xy = [ this.x, this.y ], wh = [ this.w, this.h ], p;
                if (extents != null) {
                    if (extents.xmin < 0) {
                        xy[0] += extents.xmin;
                    }
                    if (extents.ymin < 0) {
                        xy[1] += extents.ymin;
                    }
                    wh[0] = extents.xmax + ((extents.xmin < 0) ? -extents.xmin : 0);
                    wh[1] = extents.ymax + ((extents.ymin < 0) ? -extents.ymin : 0);
                }

                if (params.useDivWrapper) {
                    _ju.sizeElement(this.canvas, xy[0], xy[1], wh[0], wh[1]);
                    xy[0] = 0;
                    xy[1] = 0;
                    p = _pos([ 0, 0 ]);
                }
                else {
                    p = _pos([ xy[0], xy[1] ]);
                }

                renderer.paint.apply(this, arguments);

                _attr(this.svg, {
                    "style": p,
                    "width": wh[0] || 0,
                    "height": wh[1] || 0
                });
            }
        };

        return {
            renderer: renderer
        };
    };

    _ju.extend(SvgComponent, _jp.jsPlumbUIComponent, {
        cleanup: function (force) {
            if (force || this.typeId == null) {
                if (this.canvas) {
                    this.canvas._jsPlumb = null;
                }
                if (this.svg) {
                    this.svg._jsPlumb = null;
                }
                if (this.bgCanvas) {
                    this.bgCanvas._jsPlumb = null;
                }

                if (this.canvas && this.canvas.parentNode) {
                    this.canvas.parentNode.removeChild(this.canvas);
                }
                if (this.bgCanvas && this.bgCanvas.parentNode) {
                    this.canvas.parentNode.removeChild(this.canvas);
                }

                this.svg = null;
                this.canvas = null;
                this.path = null;
                this.group = null;
            }
            else {
                // if not a forced cleanup, just detach from DOM for now.
                if (this.canvas && this.canvas.parentNode) {
                    this.canvas.parentNode.removeChild(this.canvas);
                }
                if (this.bgCanvas && this.bgCanvas.parentNode) {
                    this.bgCanvas.parentNode.removeChild(this.bgCanvas);
                }
            }
        },
        reattach:function(instance) {
            var c = instance.getContainer();
            if (this.canvas && this.canvas.parentNode == null) {
                c.appendChild(this.canvas);
            }
            if (this.bgCanvas && this.bgCanvas.parentNode == null) {
                c.appendChild(this.bgCanvas);
            }
        },
        setVisible: function (v) {
            if (this.canvas) {
                this.canvas.style.display = v ? "block" : "none";
            }
        }
    });

    /*
     * Base class for SVG connectors.
     */
    _jp.ConnectorRenderers.svg = function (params) {
        var self = this,
            _super = SvgComponent.apply(this, [
                {
                    cssClass: params._jsPlumb.connectorClass + (this.isEditable() ? " " + params._jsPlumb.editableConnectorClass : ""),
                    originalArgs: arguments,
                    pointerEventsSpec: "none",
                    _jsPlumb: params._jsPlumb
                }
            ]);

        var _superSetEditable = this.setEditable;
        this.setEditable = function(e) {
            var result = _superSetEditable.apply(this, [e]);
            _jp[result ? "addClass" : "removeClass"](this.canvas, this._jsPlumb.instance.editableConnectorClass);
        };

        _super.renderer.paint = function (style, anchor, extents) {

            var segments = self.getSegments(), p = "", offset = [0, 0];
            if (extents.xmin < 0) {
                offset[0] = -extents.xmin;
            }
            if (extents.ymin < 0) {
                offset[1] = -extents.ymin;
            }

            if (segments.length > 0) {

                p = self.getPathData();

                var a = {
                        d: p,
                        transform: "translate(" + offset[0] + "," + offset[1] + ")",
                        "pointer-events": params["pointer-events"] || "visibleStroke"
                    },
                    outlineStyle = null,
                    d = [self.x, self.y, self.w, self.h];

                // outline style.  actually means drawing an svg object underneath the main one.
                if (style.outlineStroke) {
                    var outlineWidth = style.outlineWidth || 1,
                        outlineStrokeWidth = style.strokeWidth + (2 * outlineWidth);
                    outlineStyle = _jp.extend({}, style);
                    delete outlineStyle.gradient;
                    outlineStyle.stroke = style.outlineStroke;
                    outlineStyle.strokeWidth = outlineStrokeWidth;

                    if (self.bgPath == null) {
                        self.bgPath = _node("path", a);
                        _jp.addClass(self.bgPath, _jp.connectorOutlineClass);
                        _appendAtIndex(self.svg, self.bgPath, 0);
                    }
                    else {
                        _attr(self.bgPath, a);
                    }

                    _applyStyles(self.svg, self.bgPath, outlineStyle, d, self);
                }

                if (self.path == null) {
                    self.path = _node("path", a);
                    _appendAtIndex(self.svg, self.path, style.outlineStroke ? 1 : 0);
                }
                else {
                    _attr(self.path, a);
                }

                _applyStyles(self.svg, self.path, style, d, self);
            }
        };
    };
    _ju.extend(_jp.ConnectorRenderers.svg, SvgComponent);

// ******************************* svg segment renderer *****************************************************	


// ******************************* /svg segments *****************************************************

    /*
     * Base class for SVG endpoints.
     */
    var SvgEndpoint = _jp.SvgEndpoint = function (params) {
        var _super = SvgComponent.apply(this, [
            {
                cssClass: params._jsPlumb.endpointClass,
                originalArgs: arguments,
                pointerEventsSpec: "all",
                useDivWrapper: true,
                _jsPlumb: params._jsPlumb
            }
        ]);

        _super.renderer.paint = function (style) {
            var s = _jp.extend({}, style);
            if (s.outlineStroke) {
                s.stroke = s.outlineStroke;
            }

            if (this.node == null) {
                this.node = this.makeNode(s);
                this.svg.appendChild(this.node);
            }
            else if (this.updateNode != null) {
                this.updateNode(this.node);
            }
            _applyStyles(this.svg, this.node, s, [ this.x, this.y, this.w, this.h ], this);
            _pos(this.node, [ this.x, this.y ]);
        }.bind(this);

    };
    _ju.extend(SvgEndpoint, SvgComponent);

    /*
     * SVG Dot Endpoint
     */
    _jp.Endpoints.svg.Dot = function () {
        _jp.Endpoints.Dot.apply(this, arguments);
        SvgEndpoint.apply(this, arguments);
        this.makeNode = function (style) {
            return _node("circle", {
                "cx": this.w / 2,
                "cy": this.h / 2,
                "r": this.radius
            });
        };
        this.updateNode = function (node) {
            _attr(node, {
                "cx": this.w / 2,
                "cy": this.h / 2,
                "r": this.radius
            });
        };
    };
    _ju.extend(_jp.Endpoints.svg.Dot, [_jp.Endpoints.Dot, SvgEndpoint]);

    /*
     * SVG Rectangle Endpoint
     */
    _jp.Endpoints.svg.Rectangle = function () {
        _jp.Endpoints.Rectangle.apply(this, arguments);
        SvgEndpoint.apply(this, arguments);
        this.makeNode = function (style) {
            return _node("rect", {
                "width": this.w,
                "height": this.h
            });
        };
        this.updateNode = function (node) {
            _attr(node, {
                "width": this.w,
                "height": this.h
            });
        };
    };
    _ju.extend(_jp.Endpoints.svg.Rectangle, [_jp.Endpoints.Rectangle, SvgEndpoint]);

// ---------------------------------- Connectors ------------------------------------------------------------


    _jp.Connectors.svg.Flowchart = function() {
        _jp.Connectors.Flowchart.apply(this, arguments);
        _jp.ConnectorRenderers.svg.apply(this, arguments);
    };

    _ju.extend(_jp.Connectors.svg.Flowchart, [ _jp.Connectors.Flowchart, _jp.ConnectorRenderers.svg]);



    _jp.Connectors.svg.Bezier = function() {
        _jp.Connectors.Bezier.apply(this, arguments);
        _jp.ConnectorRenderers.svg.apply(this, arguments);
    };

    _ju.extend(_jp.Connectors.svg.Bezier, [ _jp.Connectors.Bezier, _jp.ConnectorRenderers.svg]);

    _jp.Connectors.svg.Straight = function() {
        _jp.Connectors.Straight.apply(this, arguments);
        _jp.ConnectorRenderers.svg.apply(this, arguments);
    };

    _ju.extend(_jp.Connectors.svg.Straight, [ _jp.Connectors.Straight, _jp.ConnectorRenderers.svg]);


    _jp.Connectors.svg.StateMachine = function() {
        _jp.Connectors.StateMachine.apply(this, arguments);
        _jp.ConnectorRenderers.svg.apply(this, arguments);
    };

    _ju.extend(_jp.Connectors.svg.StateMachine, [ _jp.Connectors.StateMachine, _jp.ConnectorRenderers.svg]);


// ------------------------------------------ / Connectors -----------------------------------------

    /*
     * SVG Image Endpoint is the default image endpoint.
     */
    _jp.Endpoints.svg.Image = _jp.Endpoints.Image;
    /*
     * Blank endpoint in svg renderer is the default Blank endpoint.
     */
    _jp.Endpoints.svg.Blank = _jp.Endpoints.Blank;
    /*
     * Label overlay in svg renderer is the default Label overlay.
     */
    _jp.Overlays.svg.Label = _jp.Overlays.Label;
    /*
     * Custom overlay in svg renderer is the default Custom overlay.
     */
    _jp.Overlays.svg.Custom = _jp.Overlays.Custom;

    var AbstractSvgArrowOverlay = function (superclass, originalArgs) {
        superclass.apply(this, originalArgs);
        _jp.jsPlumbUIComponent.apply(this, originalArgs);
        this.isAppendedAtTopLevel = false;
        var self = this;
        this.path = null;
        this.paint = function (params, containerExtents) {
            // only draws on connections, not endpoints.
            if (params.component.svg && containerExtents) {
                if (this.path == null) {
                    this.path = _node("path", {
                        "pointer-events": "all"
                    });
                    params.component.svg.appendChild(this.path);
                    if (this.elementCreated) {
                        this.elementCreated(this.path, params.component);
                    }

                    this.canvas = params.component.svg; // for the sake of completeness; this behaves the same as other overlays
                }
                var clazz = originalArgs && (originalArgs.length === 1) ? (originalArgs[0].cssClass || "") : "",
                    offset = [0, 0];

                if (containerExtents.xmin < 0) {
                    offset[0] = -containerExtents.xmin;
                }
                if (containerExtents.ymin < 0) {
                    offset[1] = -containerExtents.ymin;
                }

                _attr(this.path, {
                    "d": makePath(params.d),
                    "class": clazz,
                    stroke: params.stroke ? params.stroke : null,
                    fill: params.fill ? params.fill : null,
                    transform: "translate(" + offset[0] + "," + offset[1] + ")"
                });
            }
        };
        var makePath = function (d) {
            return (isNaN(d.cxy.x) || isNaN(d.cxy.y)) ? "" : "M" + d.hxy.x + "," + d.hxy.y +
                " L" + d.tail[0].x + "," + d.tail[0].y +
                " L" + d.cxy.x + "," + d.cxy.y +
                " L" + d.tail[1].x + "," + d.tail[1].y +
                " L" + d.hxy.x + "," + d.hxy.y;
        };
        this.transfer = function(target) {
            if (target.canvas && this.path && this.path.parentNode) {
                this.path.parentNode.removeChild(this.path);
                target.canvas.appendChild(this.path);
            }
        };
    };
    _ju.extend(AbstractSvgArrowOverlay, [_jp.jsPlumbUIComponent, _jp.Overlays.AbstractOverlay], {
        cleanup: function (force) {
            if (this.path != null) {
                if (force) {
                    this._jsPlumb.instance.removeElement(this.path);
                }
                else {
                    if (this.path.parentNode) {
                        this.path.parentNode.removeChild(this.path);
                    }
                }
            }
        },
        reattach:function(instance, component) {
            if (this.path && component.canvas) {
                component.canvas.appendChild(this.path);
            }
        },
        setVisible: function (v) {
            if (this.path != null) {
                (this.path.style.display = (v ? "block" : "none"));
            }
        }
    });

    _jp.Overlays.svg.Arrow = function () {
        AbstractSvgArrowOverlay.apply(this, [_jp.Overlays.Arrow, arguments]);
    };
    _ju.extend(_jp.Overlays.svg.Arrow, [ _jp.Overlays.Arrow, AbstractSvgArrowOverlay ]);

    _jp.Overlays.svg.PlainArrow = function () {
        AbstractSvgArrowOverlay.apply(this, [_jp.Overlays.PlainArrow, arguments]);
    };
    _ju.extend(_jp.Overlays.svg.PlainArrow, [ _jp.Overlays.PlainArrow, AbstractSvgArrowOverlay ]);

    _jp.Overlays.svg.Diamond = function () {
        AbstractSvgArrowOverlay.apply(this, [_jp.Overlays.Diamond, arguments]);
    };
    _ju.extend(_jp.Overlays.svg.Diamond, [ _jp.Overlays.Diamond, AbstractSvgArrowOverlay ]);

    // a test
    _jp.Overlays.svg.GuideLines = function () {
        var path = null, self = this, p1_1, p1_2;
        _jp.Overlays.GuideLines.apply(this, arguments);
        this.paint = function (params, containerExtents) {
            if (path == null) {
                path = _node("path");
                params.connector.svg.appendChild(path);
                self.attachListeners(path, params.connector);
                self.attachListeners(path, self);

                p1_1 = _node("path");
                params.connector.svg.appendChild(p1_1);
                self.attachListeners(p1_1, params.connector);
                self.attachListeners(p1_1, self);

                p1_2 = _node("path");
                params.connector.svg.appendChild(p1_2);
                self.attachListeners(p1_2, params.connector);
                self.attachListeners(p1_2, self);
            }

            var offset = [0, 0];
            if (containerExtents.xmin < 0) {
                offset[0] = -containerExtents.xmin;
            }
            if (containerExtents.ymin < 0) {
                offset[1] = -containerExtents.ymin;
            }

            _attr(path, {
                "d": makePath(params.head, params.tail),
                stroke: "red",
                fill: null,
                transform: "translate(" + offset[0] + "," + offset[1] + ")"
            });

            _attr(p1_1, {
                "d": makePath(params.tailLine[0], params.tailLine[1]),
                stroke: "blue",
                fill: null,
                transform: "translate(" + offset[0] + "," + offset[1] + ")"
            });

            _attr(p1_2, {
                "d": makePath(params.headLine[0], params.headLine[1]),
                stroke: "green",
                fill: null,
                transform: "translate(" + offset[0] + "," + offset[1] + ")"
            });
        };

        var makePath = function (d1, d2) {
            return "M " + d1.x + "," + d1.y +
                " L" + d2.x + "," + d2.y;
        };
    };
    _ju.extend(_jp.Overlays.svg.GuideLines, _jp.Overlays.GuideLines);
}).call(typeof window !== 'undefined' ? window : this);

/*
 * This file contains the 'vanilla' adapter - having no external dependencies other than bundled libs.
 *
 * Copyright (c) 2010 - 2018 jsPlumb (hello@jsplumbtoolkit.com)
 * 
 * https://jsplumbtoolkit.com
 * https://github.com/jsplumb/jsplumb
 * 
 * Dual licensed under the MIT and GPL2 licenses.
 */
;
(function () {

    "use strict";
    var root = this, _jp = root.jsPlumb, _ju = root.jsPlumbUtil,
        _jk = root.Katavorio, _jg = root.Biltong;

    var _getDragManager = function (instance, category) {

        category = category || "main";
        var key = "_katavorio_" + category;
        var k = instance[key],
            e = instance.getEventManager();

        if (!k) {
            k = new _jk({
                bind: e.on,
                unbind: e.off,
                getSize: _jp.getSize,
                getConstrainingRectangle:function(el) {
                    return [ el.parentNode.scrollWidth, el.parentNode.scrollHeight ];
                },
                getPosition: function (el, relativeToRoot) {
                    // if this is a nested draggable then compute the offset against its own offsetParent, otherwise
                    // compute against the Container's origin. see also the getUIPosition method below.
                    var o = instance.getOffset(el, relativeToRoot, el._katavorioDrag ? el.offsetParent : null);
                    return [o.left, o.top];
                },
                setPosition: function (el, xy) {
                    el.style.left = xy[0] + "px";
                    el.style.top = xy[1] + "px";
                },
                addClass: _jp.addClass,
                removeClass: _jp.removeClass,
                intersects: _jg.intersects,
                indexOf: function(l, i) { return l.indexOf(i); },
                scope:instance.getDefaultScope(),
                css: {
                    noSelect: instance.dragSelectClass,
                    droppable: "jtk-droppable",
                    draggable: "jtk-draggable",
                    drag: "jtk-drag",
                    selected: "jtk-drag-selected",
                    active: "jtk-drag-active",
                    hover: "jtk-drag-hover",
                    ghostProxy:"jtk-ghost-proxy"
                }
            });
            k.setZoom(instance.getZoom());
            instance[key] = k;
            instance.bind("zoom", k.setZoom);
        }
        return k;
    };

    var _animProps = function (o, p) {
        var _one = function (pName) {
            if (p[pName] != null) {
                if (_ju.isString(p[pName])) {
                    var m = p[pName].match(/-=/) ? -1 : 1,
                        v = p[pName].substring(2);
                    return o[pName] + (m * v);
                }
                else {
                    return p[pName];
                }
            }
            else {
                return o[pName];
            }
        };
        return [ _one("left"), _one("top") ];
    };

    _jp.extend(root.jsPlumbInstance.prototype, {

        animationSupported:true,
        getElement: function (el) {
            if (el == null) {
                return null;
            }
            // here we pluck the first entry if el was a list of entries.
            // this is not my favourite thing to do, but previous versions of
            // jsplumb supported jquery selectors, and it is possible a selector
            // will be passed in here.
            el = typeof el === "string" ? el : el.length != null && el.enctype == null ? el[0] : el;
            return typeof el === "string" ? document.getElementById(el) : el;
        },
        removeElement: function (element) {
            _getDragManager(this).elementRemoved(element);
            this.getEventManager().remove(element);
        },
        //
        // this adapter supports a rudimentary animation function. no easing is supported.  only
        // left/top properties are supported. property delta args are expected to be in the form
        //
        // +=x.xxxx
        //
        // or
        //
        // -=x.xxxx
        //
        doAnimate: function (el, properties, options) {
            options = options || {};
            var o = this.getOffset(el),
                ap = _animProps(o, properties),
                ldist = ap[0] - o.left,
                tdist = ap[1] - o.top,
                d = options.duration || 250,
                step = 15, steps = d / step,
                linc = (step / d) * ldist,
                tinc = (step / d) * tdist,
                idx = 0,
                _int = setInterval(function () {
                    _jp.setPosition(el, {
                        left: o.left + (linc * (idx + 1)),
                        top: o.top + (tinc * (idx + 1))
                    });
                    if (options.step != null) {
                        options.step(idx, Math.ceil(steps));
                    }
                    idx++;
                    if (idx >= steps) {
                        window.clearInterval(_int);
                        if (options.complete != null) {
                            options.complete();
                        }
                    }
                }, step);
        },
        // DRAG/DROP
        destroyDraggable: function (el, category) {
            _getDragManager(this, category).destroyDraggable(el);
        },
        unbindDraggable: function (el, evt, fn, category) {
            _getDragManager(this, category).destroyDraggable(el, evt, fn);
        },
        destroyDroppable: function (el, category) {
            _getDragManager(this, category).destroyDroppable(el);
        },
        unbindDroppable: function (el, evt, fn, category) {
            _getDragManager(this, category).destroyDroppable(el, evt, fn);
        },
        initDraggable: function (el, options, category) {
            _getDragManager(this, category).draggable(el, options);
        },
        initDroppable: function (el, options, category) {
            _getDragManager(this, category).droppable(el, options);
        },
        isAlreadyDraggable: function (el) {
            return el._katavorioDrag != null;
        },
        isDragSupported: function (el, options) {
            return true;
        },
        isDropSupported: function (el, options) {
            return true;
        },
        isElementDraggable: function (el) {
            el = _jp.getElement(el);
            return el._katavorioDrag && el._katavorioDrag.isEnabled();
        },
        getDragObject: function (eventArgs) {
            return eventArgs[0].drag.getDragElement();
        },
        getDragScope: function (el) {
            return el._katavorioDrag && el._katavorioDrag.scopes.join(" ") || "";
        },
        getDropEvent: function (args) {
            return args[0].e;
        },
        getUIPosition: function (eventArgs, zoom) {
            // here the position reported to us by Katavorio is relative to the element's offsetParent. For top
            // level nodes that is fine, but if we have a nested draggable then its offsetParent is actually
            // not going to be the jsplumb container; it's going to be some child of that element. In that case
            // we want to adjust the UI position to account for the offsetParent's position relative to the Container
            // origin.
            var el = eventArgs[0].el;
            if (el.offsetParent == null) {
                return null;
            }
            var finalPos = eventArgs[0].finalPos || eventArgs[0].pos;
            var p = { left:finalPos[0], top:finalPos[1] };
            if (el._katavorioDrag && el.offsetParent !== this.getContainer()) {
                var oc = this.getOffset(el.offsetParent);
                p.left += oc.left;
                p.top += oc.top;
            }
            return p;
        },
        setDragFilter: function (el, filter, _exclude) {
            if (el._katavorioDrag) {
                el._katavorioDrag.setFilter(filter, _exclude);
            }
        },
        setElementDraggable: function (el, draggable) {
            el = _jp.getElement(el);
            if (el._katavorioDrag) {
                el._katavorioDrag.setEnabled(draggable);
            }
        },
        setDragScope: function (el, scope) {
            if (el._katavorioDrag) {
                el._katavorioDrag.k.setDragScope(el, scope);
            }
        },
        setDropScope:function(el, scope) {
            if (el._katavorioDrop && el._katavorioDrop.length > 0) {
                el._katavorioDrop[0].k.setDropScope(el, scope);
            }
        },
        addToPosse:function(el, spec) {
            var specs = Array.prototype.slice.call(arguments, 1);
            var dm = _getDragManager(this);
            _jp.each(el, function(_el) {
                _el = [ _jp.getElement(_el) ];
                _el.push.apply(_el, specs );
                dm.addToPosse.apply(dm, _el);
            });
        },
        setPosse:function(el, spec) {
            var specs = Array.prototype.slice.call(arguments, 1);
            var dm = _getDragManager(this);
            _jp.each(el, function(_el) {
                _el = [ _jp.getElement(_el) ];
                _el.push.apply(_el, specs );
                dm.setPosse.apply(dm, _el);
            });
        },
        removeFromPosse:function(el, posseId) {
            var specs = Array.prototype.slice.call(arguments, 1);
            var dm = _getDragManager(this);
            _jp.each(el, function(_el) {
                _el = [ _jp.getElement(_el) ];
                _el.push.apply(_el, specs );
                dm.removeFromPosse.apply(dm, _el);
            });
        },
        removeFromAllPosses:function(el) {
            var dm = _getDragManager(this);
            _jp.each(el, function(_el) { dm.removeFromAllPosses(_jp.getElement(_el)); });
        },
        setPosseState:function(el, posseId, state) {
            var dm = _getDragManager(this);
            _jp.each(el, function(_el) { dm.setPosseState(_jp.getElement(_el), posseId, state); });
        },
        dragEvents: {
            'start': 'start', 'stop': 'stop', 'drag': 'drag', 'step': 'step',
            'over': 'over', 'out': 'out', 'drop': 'drop', 'complete': 'complete',
            'beforeStart':'beforeStart'
        },
        animEvents: {
            'step': "step", 'complete': 'complete'
        },
        stopDrag: function (el) {
            if (el._katavorioDrag) {
                el._katavorioDrag.abort();
            }
        },
        addToDragSelection: function (spec) {
            _getDragManager(this).select(spec);
        },
        removeFromDragSelection: function (spec) {
            _getDragManager(this).deselect(spec);
        },
        clearDragSelection: function () {
            _getDragManager(this).deselectAll();
        },
        trigger: function (el, event, originalEvent, payload) {
            this.getEventManager().trigger(el, event, originalEvent, payload);
        },
        doReset:function() {
            // look for katavorio instances and reset each one if found.
            for (var key in this) {
                if (key.indexOf("_katavorio_") === 0) {
                    this[key].reset();
                }
            }
        }
    });

    var ready = function (f) {
        var _do = function () {
            if (/complete|loaded|interactive/.test(document.readyState) && typeof(document.body) !== "undefined" && document.body != null) {
                f();
            }
            else {
                setTimeout(_do, 9);
            }
        };

        _do();
    };
    ready(_jp.init);

}).call(typeof window !== 'undefined' ? window : this);


/***/ }),
/* 629 */,
/* 630 */,
/* 631 */,
/* 632 */,
/* 633 */,
/* 634 */,
/* 635 */,
/* 636 */,
/* 637 */,
/* 638 */,
/* 639 */,
/* 640 */,
/* 641 */,
/* 642 */
/*!*********************************************************************!*\
  !*** ./node_modules/scheduler/cjs/scheduler-tracing.development.js ***!
  \*********************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/** @license React v0.13.3
 * scheduler-tracing.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */





if (true) {
  (function() {
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

// Helps identify side effects in begin-phase lifecycle hooks and setState reducers:


// In some cases, StrictMode should also double-render lifecycles.
// This can be confusing for tests though,
// And it can be bad for performance in production.
// This feature flag can be used to control the behavior:


// To preserve the "Pause on caught exceptions" behavior of the debugger, we
// replay the begin phase of a failed component inside invokeGuardedCallback.


// Warn about deprecated, async-unsafe lifecycles; relates to RFC #6:


// Gather advanced timing metrics for Profiler subtrees.


// Trace which interactions trigger each commit.
var enableSchedulerTracing = true;

// Only used in www builds.
 // TODO: true? Here it might just be false.

// Only used in www builds.


// Only used in www builds.


// React Fire: prevent the value and checked attributes from syncing
// with their related DOM properties


// These APIs will no longer be "unstable" in the upcoming 16.7 release,
// Control this behavior with a flag to support 16.6 minor releases in the meanwhile.

var DEFAULT_THREAD_ID = 0;

// Counters used to generate unique IDs.
var interactionIDCounter = 0;
var threadIDCounter = 0;

// Set of currently traced interactions.
// Interactions "stack"–
// Meaning that newly traced interactions are appended to the previously active set.
// When an interaction goes out of scope, the previous set (if any) is restored.
exports.__interactionsRef = null;

// Listener(s) to notify when interactions begin and end.
exports.__subscriberRef = null;

if (enableSchedulerTracing) {
  exports.__interactionsRef = {
    current: new Set()
  };
  exports.__subscriberRef = {
    current: null
  };
}

function unstable_clear(callback) {
  if (!enableSchedulerTracing) {
    return callback();
  }

  var prevInteractions = exports.__interactionsRef.current;
  exports.__interactionsRef.current = new Set();

  try {
    return callback();
  } finally {
    exports.__interactionsRef.current = prevInteractions;
  }
}

function unstable_getCurrent() {
  if (!enableSchedulerTracing) {
    return null;
  } else {
    return exports.__interactionsRef.current;
  }
}

function unstable_getThreadID() {
  return ++threadIDCounter;
}

function unstable_trace(name, timestamp, callback) {
  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;

  if (!enableSchedulerTracing) {
    return callback();
  }

  var interaction = {
    __count: 1,
    id: interactionIDCounter++,
    name: name,
    timestamp: timestamp
  };

  var prevInteractions = exports.__interactionsRef.current;

  // Traced interactions should stack/accumulate.
  // To do that, clone the current interactions.
  // The previous set will be restored upon completion.
  var interactions = new Set(prevInteractions);
  interactions.add(interaction);
  exports.__interactionsRef.current = interactions;

  var subscriber = exports.__subscriberRef.current;
  var returnValue = void 0;

  try {
    if (subscriber !== null) {
      subscriber.onInteractionTraced(interaction);
    }
  } finally {
    try {
      if (subscriber !== null) {
        subscriber.onWorkStarted(interactions, threadID);
      }
    } finally {
      try {
        returnValue = callback();
      } finally {
        exports.__interactionsRef.current = prevInteractions;

        try {
          if (subscriber !== null) {
            subscriber.onWorkStopped(interactions, threadID);
          }
        } finally {
          interaction.__count--;

          // If no async work was scheduled for this interaction,
          // Notify subscribers that it's completed.
          if (subscriber !== null && interaction.__count === 0) {
            subscriber.onInteractionScheduledWorkCompleted(interaction);
          }
        }
      }
    }
  }

  return returnValue;
}

function unstable_wrap(callback) {
  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;

  if (!enableSchedulerTracing) {
    return callback;
  }

  var wrappedInteractions = exports.__interactionsRef.current;

  var subscriber = exports.__subscriberRef.current;
  if (subscriber !== null) {
    subscriber.onWorkScheduled(wrappedInteractions, threadID);
  }

  // Update the pending async work count for the current interactions.
  // Update after calling subscribers in case of error.
  wrappedInteractions.forEach(function (interaction) {
    interaction.__count++;
  });

  var hasRun = false;

  function wrapped() {
    var prevInteractions = exports.__interactionsRef.current;
    exports.__interactionsRef.current = wrappedInteractions;

    subscriber = exports.__subscriberRef.current;

    try {
      var returnValue = void 0;

      try {
        if (subscriber !== null) {
          subscriber.onWorkStarted(wrappedInteractions, threadID);
        }
      } finally {
        try {
          returnValue = callback.apply(undefined, arguments);
        } finally {
          exports.__interactionsRef.current = prevInteractions;

          if (subscriber !== null) {
            subscriber.onWorkStopped(wrappedInteractions, threadID);
          }
        }
      }

      return returnValue;
    } finally {
      if (!hasRun) {
        // We only expect a wrapped function to be executed once,
        // But in the event that it's executed more than once–
        // Only decrement the outstanding interaction counts once.
        hasRun = true;

        // Update pending async counts for all wrapped interactions.
        // If this was the last scheduled async work for any of them,
        // Mark them as completed.
        wrappedInteractions.forEach(function (interaction) {
          interaction.__count--;

          if (subscriber !== null && interaction.__count === 0) {
            subscriber.onInteractionScheduledWorkCompleted(interaction);
          }
        });
      }
    }
  }

  wrapped.cancel = function cancel() {
    subscriber = exports.__subscriberRef.current;

    try {
      if (subscriber !== null) {
        subscriber.onWorkCanceled(wrappedInteractions, threadID);
      }
    } finally {
      // Update pending async counts for all wrapped interactions.
      // If this was the last scheduled async work for any of them,
      // Mark them as completed.
      wrappedInteractions.forEach(function (interaction) {
        interaction.__count--;

        if (subscriber && interaction.__count === 0) {
          subscriber.onInteractionScheduledWorkCompleted(interaction);
        }
      });
    }
  };

  return wrapped;
}

var subscribers = null;
if (enableSchedulerTracing) {
  subscribers = new Set();
}

function unstable_subscribe(subscriber) {
  if (enableSchedulerTracing) {
    subscribers.add(subscriber);

    if (subscribers.size === 1) {
      exports.__subscriberRef.current = {
        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
        onInteractionTraced: onInteractionTraced,
        onWorkCanceled: onWorkCanceled,
        onWorkScheduled: onWorkScheduled,
        onWorkStarted: onWorkStarted,
        onWorkStopped: onWorkStopped
      };
    }
  }
}

function unstable_unsubscribe(subscriber) {
  if (enableSchedulerTracing) {
    subscribers.delete(subscriber);

    if (subscribers.size === 0) {
      exports.__subscriberRef.current = null;
    }
  }
}

function onInteractionTraced(interaction) {
  var didCatchError = false;
  var caughtError = null;

  subscribers.forEach(function (subscriber) {
    try {
      subscriber.onInteractionTraced(interaction);
    } catch (error) {
      if (!didCatchError) {
        didCatchError = true;
        caughtError = error;
      }
    }
  });

  if (didCatchError) {
    throw caughtError;
  }
}

function onInteractionScheduledWorkCompleted(interaction) {
  var didCatchError = false;
  var caughtError = null;

  subscribers.forEach(function (subscriber) {
    try {
      subscriber.onInteractionScheduledWorkCompleted(interaction);
    } catch (error) {
      if (!didCatchError) {
        didCatchError = true;
        caughtError = error;
      }
    }
  });

  if (didCatchError) {
    throw caughtError;
  }
}

function onWorkScheduled(interactions, threadID) {
  var didCatchError = false;
  var caughtError = null;

  subscribers.forEach(function (subscriber) {
    try {
      subscriber.onWorkScheduled(interactions, threadID);
    } catch (error) {
      if (!didCatchError) {
        didCatchError = true;
        caughtError = error;
      }
    }
  });

  if (didCatchError) {
    throw caughtError;
  }
}

function onWorkStarted(interactions, threadID) {
  var didCatchError = false;
  var caughtError = null;

  subscribers.forEach(function (subscriber) {
    try {
      subscriber.onWorkStarted(interactions, threadID);
    } catch (error) {
      if (!didCatchError) {
        didCatchError = true;
        caughtError = error;
      }
    }
  });

  if (didCatchError) {
    throw caughtError;
  }
}

function onWorkStopped(interactions, threadID) {
  var didCatchError = false;
  var caughtError = null;

  subscribers.forEach(function (subscriber) {
    try {
      subscriber.onWorkStopped(interactions, threadID);
    } catch (error) {
      if (!didCatchError) {
        didCatchError = true;
        caughtError = error;
      }
    }
  });

  if (didCatchError) {
    throw caughtError;
  }
}

function onWorkCanceled(interactions, threadID) {
  var didCatchError = false;
  var caughtError = null;

  subscribers.forEach(function (subscriber) {
    try {
      subscriber.onWorkCanceled(interactions, threadID);
    } catch (error) {
      if (!didCatchError) {
        didCatchError = true;
        caughtError = error;
      }
    }
  });

  if (didCatchError) {
    throw caughtError;
  }
}

exports.unstable_clear = unstable_clear;
exports.unstable_getCurrent = unstable_getCurrent;
exports.unstable_getThreadID = unstable_getThreadID;
exports.unstable_trace = unstable_trace;
exports.unstable_wrap = unstable_wrap;
exports.unstable_subscribe = unstable_subscribe;
exports.unstable_unsubscribe = unstable_unsubscribe;
  })();
}


/***/ }),
/* 643 */
/*!*******************************************!*\
  !*** ./node_modules/scheduler/tracing.js ***!
  \*******************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


if (false) {} else {
  module.exports = __webpack_require__(/*! ./cjs/scheduler-tracing.development.js */ 642);
}


/***/ }),
/* 644 */
/*!*************************************************************!*\
  !*** ./node_modules/scheduler/cjs/scheduler.development.js ***!
  \*************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(global) {/** @license React v0.13.3
 * scheduler.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */





if (true) {
  (function() {
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var enableSchedulerDebugging = false;

/* eslint-disable no-var */

// TODO: Use symbols?
var ImmediatePriority = 1;
var UserBlockingPriority = 2;
var NormalPriority = 3;
var LowPriority = 4;
var IdlePriority = 5;

// Max 31 bit integer. The max integer size in V8 for 32-bit systems.
// Math.pow(2, 30) - 1
// 0b111111111111111111111111111111
var maxSigned31BitInt = 1073741823;

// Times out immediately
var IMMEDIATE_PRIORITY_TIMEOUT = -1;
// Eventually times out
var USER_BLOCKING_PRIORITY = 250;
var NORMAL_PRIORITY_TIMEOUT = 5000;
var LOW_PRIORITY_TIMEOUT = 10000;
// Never times out
var IDLE_PRIORITY = maxSigned31BitInt;

// Callbacks are stored as a circular, doubly linked list.
var firstCallbackNode = null;

var currentDidTimeout = false;
// Pausing the scheduler is useful for debugging.
var isSchedulerPaused = false;

var currentPriorityLevel = NormalPriority;
var currentEventStartTime = -1;
var currentExpirationTime = -1;

// This is set when a callback is being executed, to prevent re-entrancy.
var isExecutingCallback = false;

var isHostCallbackScheduled = false;

var hasNativePerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';

function ensureHostCallbackIsScheduled() {
  if (isExecutingCallback) {
    // Don't schedule work yet; wait until the next time we yield.
    return;
  }
  // Schedule the host callback using the earliest expiration in the list.
  var expirationTime = firstCallbackNode.expirationTime;
  if (!isHostCallbackScheduled) {
    isHostCallbackScheduled = true;
  } else {
    // Cancel the existing host callback.
    cancelHostCallback();
  }
  requestHostCallback(flushWork, expirationTime);
}

function flushFirstCallback() {
  var flushedNode = firstCallbackNode;

  // Remove the node from the list before calling the callback. That way the
  // list is in a consistent state even if the callback throws.
  var next = firstCallbackNode.next;
  if (firstCallbackNode === next) {
    // This is the last callback in the list.
    firstCallbackNode = null;
    next = null;
  } else {
    var lastCallbackNode = firstCallbackNode.previous;
    firstCallbackNode = lastCallbackNode.next = next;
    next.previous = lastCallbackNode;
  }

  flushedNode.next = flushedNode.previous = null;

  // Now it's safe to call the callback.
  var callback = flushedNode.callback;
  var expirationTime = flushedNode.expirationTime;
  var priorityLevel = flushedNode.priorityLevel;
  var previousPriorityLevel = currentPriorityLevel;
  var previousExpirationTime = currentExpirationTime;
  currentPriorityLevel = priorityLevel;
  currentExpirationTime = expirationTime;
  var continuationCallback;
  try {
    continuationCallback = callback();
  } finally {
    currentPriorityLevel = previousPriorityLevel;
    currentExpirationTime = previousExpirationTime;
  }

  // A callback may return a continuation. The continuation should be scheduled
  // with the same priority and expiration as the just-finished callback.
  if (typeof continuationCallback === 'function') {
    var continuationNode = {
      callback: continuationCallback,
      priorityLevel: priorityLevel,
      expirationTime: expirationTime,
      next: null,
      previous: null
    };

    // Insert the new callback into the list, sorted by its expiration. This is
    // almost the same as the code in `scheduleCallback`, except the callback
    // is inserted into the list *before* callbacks of equal expiration instead
    // of after.
    if (firstCallbackNode === null) {
      // This is the first callback in the list.
      firstCallbackNode = continuationNode.next = continuationNode.previous = continuationNode;
    } else {
      var nextAfterContinuation = null;
      var node = firstCallbackNode;
      do {
        if (node.expirationTime >= expirationTime) {
          // This callback expires at or after the continuation. We will insert
          // the continuation *before* this callback.
          nextAfterContinuation = node;
          break;
        }
        node = node.next;
      } while (node !== firstCallbackNode);

      if (nextAfterContinuation === null) {
        // No equal or lower priority callback was found, which means the new
        // callback is the lowest priority callback in the list.
        nextAfterContinuation = firstCallbackNode;
      } else if (nextAfterContinuation === firstCallbackNode) {
        // The new callback is the highest priority callback in the list.
        firstCallbackNode = continuationNode;
        ensureHostCallbackIsScheduled();
      }

      var previous = nextAfterContinuation.previous;
      previous.next = nextAfterContinuation.previous = continuationNode;
      continuationNode.next = nextAfterContinuation;
      continuationNode.previous = previous;
    }
  }
}

function flushImmediateWork() {
  if (
  // Confirm we've exited the outer most event handler
  currentEventStartTime === -1 && firstCallbackNode !== null && firstCallbackNode.priorityLevel === ImmediatePriority) {
    isExecutingCallback = true;
    try {
      do {
        flushFirstCallback();
      } while (
      // Keep flushing until there are no more immediate callbacks
      firstCallbackNode !== null && firstCallbackNode.priorityLevel === ImmediatePriority);
    } finally {
      isExecutingCallback = false;
      if (firstCallbackNode !== null) {
        // There's still work remaining. Request another callback.
        ensureHostCallbackIsScheduled();
      } else {
        isHostCallbackScheduled = false;
      }
    }
  }
}

function flushWork(didTimeout) {
  // Exit right away if we're currently paused

  if (enableSchedulerDebugging && isSchedulerPaused) {
    return;
  }

  isExecutingCallback = true;
  var previousDidTimeout = currentDidTimeout;
  currentDidTimeout = didTimeout;
  try {
    if (didTimeout) {
      // Flush all the expired callbacks without yielding.
      while (firstCallbackNode !== null && !(enableSchedulerDebugging && isSchedulerPaused)) {
        // TODO Wrap in feature flag
        // Read the current time. Flush all the callbacks that expire at or
        // earlier than that time. Then read the current time again and repeat.
        // This optimizes for as few performance.now calls as possible.
        var currentTime = exports.unstable_now();
        if (firstCallbackNode.expirationTime <= currentTime) {
          do {
            flushFirstCallback();
          } while (firstCallbackNode !== null && firstCallbackNode.expirationTime <= currentTime && !(enableSchedulerDebugging && isSchedulerPaused));
          continue;
        }
        break;
      }
    } else {
      // Keep flushing callbacks until we run out of time in the frame.
      if (firstCallbackNode !== null) {
        do {
          if (enableSchedulerDebugging && isSchedulerPaused) {
            break;
          }
          flushFirstCallback();
        } while (firstCallbackNode !== null && !shouldYieldToHost());
      }
    }
  } finally {
    isExecutingCallback = false;
    currentDidTimeout = previousDidTimeout;
    if (firstCallbackNode !== null) {
      // There's still work remaining. Request another callback.
      ensureHostCallbackIsScheduled();
    } else {
      isHostCallbackScheduled = false;
    }
    // Before exiting, flush all the immediate work that was scheduled.
    flushImmediateWork();
  }
}

function unstable_runWithPriority(priorityLevel, eventHandler) {
  switch (priorityLevel) {
    case ImmediatePriority:
    case UserBlockingPriority:
    case NormalPriority:
    case LowPriority:
    case IdlePriority:
      break;
    default:
      priorityLevel = NormalPriority;
  }

  var previousPriorityLevel = currentPriorityLevel;
  var previousEventStartTime = currentEventStartTime;
  currentPriorityLevel = priorityLevel;
  currentEventStartTime = exports.unstable_now();

  try {
    return eventHandler();
  } finally {
    currentPriorityLevel = previousPriorityLevel;
    currentEventStartTime = previousEventStartTime;

    // Before exiting, flush all the immediate work that was scheduled.
    flushImmediateWork();
  }
}

function unstable_next(eventHandler) {
  var priorityLevel = void 0;
  switch (currentPriorityLevel) {
    case ImmediatePriority:
    case UserBlockingPriority:
    case NormalPriority:
      // Shift down to normal priority
      priorityLevel = NormalPriority;
      break;
    default:
      // Anything lower than normal priority should remain at the current level.
      priorityLevel = currentPriorityLevel;
      break;
  }

  var previousPriorityLevel = currentPriorityLevel;
  var previousEventStartTime = currentEventStartTime;
  currentPriorityLevel = priorityLevel;
  currentEventStartTime = exports.unstable_now();

  try {
    return eventHandler();
  } finally {
    currentPriorityLevel = previousPriorityLevel;
    currentEventStartTime = previousEventStartTime;

    // Before exiting, flush all the immediate work that was scheduled.
    flushImmediateWork();
  }
}

function unstable_wrapCallback(callback) {
  var parentPriorityLevel = currentPriorityLevel;
  return function () {
    // This is a fork of runWithPriority, inlined for performance.
    var previousPriorityLevel = currentPriorityLevel;
    var previousEventStartTime = currentEventStartTime;
    currentPriorityLevel = parentPriorityLevel;
    currentEventStartTime = exports.unstable_now();

    try {
      return callback.apply(this, arguments);
    } finally {
      currentPriorityLevel = previousPriorityLevel;
      currentEventStartTime = previousEventStartTime;
      flushImmediateWork();
    }
  };
}

function unstable_scheduleCallback(callback, deprecated_options) {
  var startTime = currentEventStartTime !== -1 ? currentEventStartTime : exports.unstable_now();

  var expirationTime;
  if (typeof deprecated_options === 'object' && deprecated_options !== null && typeof deprecated_options.timeout === 'number') {
    // FIXME: Remove this branch once we lift expiration times out of React.
    expirationTime = startTime + deprecated_options.timeout;
  } else {
    switch (currentPriorityLevel) {
      case ImmediatePriority:
        expirationTime = startTime + IMMEDIATE_PRIORITY_TIMEOUT;
        break;
      case UserBlockingPriority:
        expirationTime = startTime + USER_BLOCKING_PRIORITY;
        break;
      case IdlePriority:
        expirationTime = startTime + IDLE_PRIORITY;
        break;
      case LowPriority:
        expirationTime = startTime + LOW_PRIORITY_TIMEOUT;
        break;
      case NormalPriority:
      default:
        expirationTime = startTime + NORMAL_PRIORITY_TIMEOUT;
    }
  }

  var newNode = {
    callback: callback,
    priorityLevel: currentPriorityLevel,
    expirationTime: expirationTime,
    next: null,
    previous: null
  };

  // Insert the new callback into the list, ordered first by expiration, then
  // by insertion. So the new callback is inserted any other callback with
  // equal expiration.
  if (firstCallbackNode === null) {
    // This is the first callback in the list.
    firstCallbackNode = newNode.next = newNode.previous = newNode;
    ensureHostCallbackIsScheduled();
  } else {
    var next = null;
    var node = firstCallbackNode;
    do {
      if (node.expirationTime > expirationTime) {
        // The new callback expires before this one.
        next = node;
        break;
      }
      node = node.next;
    } while (node !== firstCallbackNode);

    if (next === null) {
      // No callback with a later expiration was found, which means the new
      // callback has the latest expiration in the list.
      next = firstCallbackNode;
    } else if (next === firstCallbackNode) {
      // The new callback has the earliest expiration in the entire list.
      firstCallbackNode = newNode;
      ensureHostCallbackIsScheduled();
    }

    var previous = next.previous;
    previous.next = next.previous = newNode;
    newNode.next = next;
    newNode.previous = previous;
  }

  return newNode;
}

function unstable_pauseExecution() {
  isSchedulerPaused = true;
}

function unstable_continueExecution() {
  isSchedulerPaused = false;
  if (firstCallbackNode !== null) {
    ensureHostCallbackIsScheduled();
  }
}

function unstable_getFirstCallbackNode() {
  return firstCallbackNode;
}

function unstable_cancelCallback(callbackNode) {
  var next = callbackNode.next;
  if (next === null) {
    // Already cancelled.
    return;
  }

  if (next === callbackNode) {
    // This is the only scheduled callback. Clear the list.
    firstCallbackNode = null;
  } else {
    // Remove the callback from its position in the list.
    if (callbackNode === firstCallbackNode) {
      firstCallbackNode = next;
    }
    var previous = callbackNode.previous;
    previous.next = next;
    next.previous = previous;
  }

  callbackNode.next = callbackNode.previous = null;
}

function unstable_getCurrentPriorityLevel() {
  return currentPriorityLevel;
}

function unstable_shouldYield() {
  return !currentDidTimeout && (firstCallbackNode !== null && firstCallbackNode.expirationTime < currentExpirationTime || shouldYieldToHost());
}

// The remaining code is essentially a polyfill for requestIdleCallback. It
// works by scheduling a requestAnimationFrame, storing the time for the start
// of the frame, then scheduling a postMessage which gets scheduled after paint.
// Within the postMessage handler do as much work as possible until time + frame
// rate. By separating the idle call into a separate event tick we ensure that
// layout, paint and other browser work is counted against the available time.
// The frame rate is dynamically adjusted.

// We capture a local reference to any global, in case it gets polyfilled after
// this module is initially evaluated. We want to be using a
// consistent implementation.
var localDate = Date;

// This initialization code may run even on server environments if a component
// just imports ReactDOM (e.g. for findDOMNode). Some environments might not
// have setTimeout or clearTimeout. However, we always expect them to be defined
// on the client. https://github.com/facebook/react/pull/13088
var localSetTimeout = typeof setTimeout === 'function' ? setTimeout : undefined;
var localClearTimeout = typeof clearTimeout === 'function' ? clearTimeout : undefined;

// We don't expect either of these to necessarily be defined, but we will error
// later if they are missing on the client.
var localRequestAnimationFrame = typeof requestAnimationFrame === 'function' ? requestAnimationFrame : undefined;
var localCancelAnimationFrame = typeof cancelAnimationFrame === 'function' ? cancelAnimationFrame : undefined;

// requestAnimationFrame does not run when the tab is in the background. If
// we're backgrounded we prefer for that work to happen so that the page
// continues to load in the background. So we also schedule a 'setTimeout' as
// a fallback.
// TODO: Need a better heuristic for backgrounded work.
var ANIMATION_FRAME_TIMEOUT = 100;
var rAFID;
var rAFTimeoutID;
var requestAnimationFrameWithTimeout = function (callback) {
  // schedule rAF and also a setTimeout
  rAFID = localRequestAnimationFrame(function (timestamp) {
    // cancel the setTimeout
    localClearTimeout(rAFTimeoutID);
    callback(timestamp);
  });
  rAFTimeoutID = localSetTimeout(function () {
    // cancel the requestAnimationFrame
    localCancelAnimationFrame(rAFID);
    callback(exports.unstable_now());
  }, ANIMATION_FRAME_TIMEOUT);
};

if (hasNativePerformanceNow) {
  var Performance = performance;
  exports.unstable_now = function () {
    return Performance.now();
  };
} else {
  exports.unstable_now = function () {
    return localDate.now();
  };
}

var requestHostCallback;
var cancelHostCallback;
var shouldYieldToHost;

var globalValue = null;
if (typeof window !== 'undefined') {
  globalValue = window;
} else if (typeof global !== 'undefined') {
  globalValue = global;
}

if (globalValue && globalValue._schedMock) {
  // Dynamic injection, only for testing purposes.
  var globalImpl = globalValue._schedMock;
  requestHostCallback = globalImpl[0];
  cancelHostCallback = globalImpl[1];
  shouldYieldToHost = globalImpl[2];
  exports.unstable_now = globalImpl[3];
} else if (
// If Scheduler runs in a non-DOM environment, it falls back to a naive
// implementation using setTimeout.
typeof window === 'undefined' ||
// Check if MessageChannel is supported, too.
typeof MessageChannel !== 'function') {
  // If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
  // fallback to a naive implementation.
  var _callback = null;
  var _flushCallback = function (didTimeout) {
    if (_callback !== null) {
      try {
        _callback(didTimeout);
      } finally {
        _callback = null;
      }
    }
  };
  requestHostCallback = function (cb, ms) {
    if (_callback !== null) {
      // Protect against re-entrancy.
      setTimeout(requestHostCallback, 0, cb);
    } else {
      _callback = cb;
      setTimeout(_flushCallback, 0, false);
    }
  };
  cancelHostCallback = function () {
    _callback = null;
  };
  shouldYieldToHost = function () {
    return false;
  };
} else {
  if (typeof console !== 'undefined') {
    // TODO: Remove fb.me link
    if (typeof localRequestAnimationFrame !== 'function') {
      console.error("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
    }
    if (typeof localCancelAnimationFrame !== 'function') {
      console.error("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
    }
  }

  var scheduledHostCallback = null;
  var isMessageEventScheduled = false;
  var timeoutTime = -1;

  var isAnimationFrameScheduled = false;

  var isFlushingHostCallback = false;

  var frameDeadline = 0;
  // We start out assuming that we run at 30fps but then the heuristic tracking
  // will adjust this value to a faster fps if we get more frequent animation
  // frames.
  var previousFrameTime = 33;
  var activeFrameTime = 33;

  shouldYieldToHost = function () {
    return frameDeadline <= exports.unstable_now();
  };

  // We use the postMessage trick to defer idle work until after the repaint.
  var channel = new MessageChannel();
  var port = channel.port2;
  channel.port1.onmessage = function (event) {
    isMessageEventScheduled = false;

    var prevScheduledCallback = scheduledHostCallback;
    var prevTimeoutTime = timeoutTime;
    scheduledHostCallback = null;
    timeoutTime = -1;

    var currentTime = exports.unstable_now();

    var didTimeout = false;
    if (frameDeadline - currentTime <= 0) {
      // There's no time left in this idle period. Check if the callback has
      // a timeout and whether it's been exceeded.
      if (prevTimeoutTime !== -1 && prevTimeoutTime <= currentTime) {
        // Exceeded the timeout. Invoke the callback even though there's no
        // time left.
        didTimeout = true;
      } else {
        // No timeout.
        if (!isAnimationFrameScheduled) {
          // Schedule another animation callback so we retry later.
          isAnimationFrameScheduled = true;
          requestAnimationFrameWithTimeout(animationTick);
        }
        // Exit without invoking the callback.
        scheduledHostCallback = prevScheduledCallback;
        timeoutTime = prevTimeoutTime;
        return;
      }
    }

    if (prevScheduledCallback !== null) {
      isFlushingHostCallback = true;
      try {
        prevScheduledCallback(didTimeout);
      } finally {
        isFlushingHostCallback = false;
      }
    }
  };

  var animationTick = function (rafTime) {
    if (scheduledHostCallback !== null) {
      // Eagerly schedule the next animation callback at the beginning of the
      // frame. If the scheduler queue is not empty at the end of the frame, it
      // will continue flushing inside that callback. If the queue *is* empty,
      // then it will exit immediately. Posting the callback at the start of the
      // frame ensures it's fired within the earliest possible frame. If we
      // waited until the end of the frame to post the callback, we risk the
      // browser skipping a frame and not firing the callback until the frame
      // after that.
      requestAnimationFrameWithTimeout(animationTick);
    } else {
      // No pending work. Exit.
      isAnimationFrameScheduled = false;
      return;
    }

    var nextFrameTime = rafTime - frameDeadline + activeFrameTime;
    if (nextFrameTime < activeFrameTime && previousFrameTime < activeFrameTime) {
      if (nextFrameTime < 8) {
        // Defensive coding. We don't support higher frame rates than 120hz.
        // If the calculated frame time gets lower than 8, it is probably a bug.
        nextFrameTime = 8;
      }
      // If one frame goes long, then the next one can be short to catch up.
      // If two frames are short in a row, then that's an indication that we
      // actually have a higher frame rate than what we're currently optimizing.
      // We adjust our heuristic dynamically accordingly. For example, if we're
      // running on 120hz display or 90hz VR display.
      // Take the max of the two in case one of them was an anomaly due to
      // missed frame deadlines.
      activeFrameTime = nextFrameTime < previousFrameTime ? previousFrameTime : nextFrameTime;
    } else {
      previousFrameTime = nextFrameTime;
    }
    frameDeadline = rafTime + activeFrameTime;
    if (!isMessageEventScheduled) {
      isMessageEventScheduled = true;
      port.postMessage(undefined);
    }
  };

  requestHostCallback = function (callback, absoluteTimeout) {
    scheduledHostCallback = callback;
    timeoutTime = absoluteTimeout;
    if (isFlushingHostCallback || absoluteTimeout < 0) {
      // Don't wait for the next frame. Continue working ASAP, in a new event.
      port.postMessage(undefined);
    } else if (!isAnimationFrameScheduled) {
      // If rAF didn't already schedule one, we need to schedule a frame.
      // TODO: If this rAF doesn't materialize because the browser throttles, we
      // might want to still have setTimeout trigger rIC as a backup to ensure
      // that we keep performing work.
      isAnimationFrameScheduled = true;
      requestAnimationFrameWithTimeout(animationTick);
    }
  };

  cancelHostCallback = function () {
    scheduledHostCallback = null;
    isMessageEventScheduled = false;
    timeoutTime = -1;
  };
}

exports.unstable_ImmediatePriority = ImmediatePriority;
exports.unstable_UserBlockingPriority = UserBlockingPriority;
exports.unstable_NormalPriority = NormalPriority;
exports.unstable_IdlePriority = IdlePriority;
exports.unstable_LowPriority = LowPriority;
exports.unstable_runWithPriority = unstable_runWithPriority;
exports.unstable_next = unstable_next;
exports.unstable_scheduleCallback = unstable_scheduleCallback;
exports.unstable_cancelCallback = unstable_cancelCallback;
exports.unstable_wrapCallback = unstable_wrapCallback;
exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
exports.unstable_shouldYield = unstable_shouldYield;
exports.unstable_continueExecution = unstable_continueExecution;
exports.unstable_pauseExecution = unstable_pauseExecution;
exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
  })();
}

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../webpack/buildin/global.js */ 86)))

/***/ }),
/* 645 */
/*!*****************************************!*\
  !*** ./node_modules/scheduler/index.js ***!
  \*****************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


if (false) {} else {
  module.exports = __webpack_require__(/*! ./cjs/scheduler.development.js */ 644);
}


/***/ }),
/* 646 */
/*!*************************************************************!*\
  !*** ./node_modules/react-dom/cjs/react-dom.development.js ***!
  \*************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/** @license React v16.8.3
 * react-dom.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */





if (true) {
  (function() {
'use strict';

var React = __webpack_require__(/*! react */ 1);
var _assign = __webpack_require__(/*! object-assign */ 250);
var checkPropTypes = __webpack_require__(/*! prop-types/checkPropTypes */ 249);
var scheduler = __webpack_require__(/*! scheduler */ 645);
var tracing = __webpack_require__(/*! scheduler/tracing */ 643);

/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

var validateFormat = function () {};

{
  validateFormat = function (format) {
    if (format === undefined) {
      throw new Error('invariant requires an error message argument');
    }
  };
}

function invariant(condition, format, a, b, c, d, e, f) {
  validateFormat(format);

  if (!condition) {
    var error = void 0;
    if (format === undefined) {
      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');
    } else {
      var args = [a, b, c, d, e, f];
      var argIndex = 0;
      error = new Error(format.replace(/%s/g, function () {
        return args[argIndex++];
      }));
      error.name = 'Invariant Violation';
    }

    error.framesToPop = 1; // we don't care about invariant's own frame
    throw error;
  }
}

// Relying on the `invariant()` implementation lets us
// preserve the format and params in the www builds.

!React ? invariant(false, 'ReactDOM was loaded before React. Make sure you load the React package before loading ReactDOM.') : void 0;

var invokeGuardedCallbackImpl = function (name, func, context, a, b, c, d, e, f) {
  var funcArgs = Array.prototype.slice.call(arguments, 3);
  try {
    func.apply(context, funcArgs);
  } catch (error) {
    this.onError(error);
  }
};

{
  // In DEV mode, we swap out invokeGuardedCallback for a special version
  // that plays more nicely with the browser's DevTools. The idea is to preserve
  // "Pause on exceptions" behavior. Because React wraps all user-provided
  // functions in invokeGuardedCallback, and the production version of
  // invokeGuardedCallback uses a try-catch, all user exceptions are treated
  // like caught exceptions, and the DevTools won't pause unless the developer
  // takes the extra step of enabling pause on caught exceptions. This is
  // unintuitive, though, because even though React has caught the error, from
  // the developer's perspective, the error is uncaught.
  //
  // To preserve the expected "Pause on exceptions" behavior, we don't use a
  // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
  // DOM node, and call the user-provided callback from inside an event handler
  // for that fake event. If the callback throws, the error is "captured" using
  // a global event handler. But because the error happens in a different
  // event loop context, it does not interrupt the normal program flow.
  // Effectively, this gives us try-catch behavior without actually using
  // try-catch. Neat!

  // Check that the browser supports the APIs we need to implement our special
  // DEV version of invokeGuardedCallback
  if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
    var fakeNode = document.createElement('react');

    var invokeGuardedCallbackDev = function (name, func, context, a, b, c, d, e, f) {
      // If document doesn't exist we know for sure we will crash in this method
      // when we call document.createEvent(). However this can cause confusing
      // errors: https://github.com/facebookincubator/create-react-app/issues/3482
      // So we preemptively throw with a better message instead.
      !(typeof document !== 'undefined') ? invariant(false, 'The `document` global was defined when React was initialized, but is not defined anymore. This can happen in a test environment if a component schedules an update from an asynchronous callback, but the test has already finished running. To solve this, you can either unmount the component at the end of your test (and ensure that any asynchronous operations get canceled in `componentWillUnmount`), or you can change the test itself to be asynchronous.') : void 0;
      var evt = document.createEvent('Event');

      // Keeps track of whether the user-provided callback threw an error. We
      // set this to true at the beginning, then set it to false right after
      // calling the function. If the function errors, `didError` will never be
      // set to false. This strategy works even if the browser is flaky and
      // fails to call our global error handler, because it doesn't rely on
      // the error event at all.
      var didError = true;

      // Keeps track of the value of window.event so that we can reset it
      // during the callback to let user code access window.event in the
      // browsers that support it.
      var windowEvent = window.event;

      // Keeps track of the descriptor of window.event to restore it after event
      // dispatching: https://github.com/facebook/react/issues/13688
      var windowEventDescriptor = Object.getOwnPropertyDescriptor(window, 'event');

      // Create an event handler for our fake event. We will synchronously
      // dispatch our fake event using `dispatchEvent`. Inside the handler, we
      // call the user-provided callback.
      var funcArgs = Array.prototype.slice.call(arguments, 3);
      function callCallback() {
        // We immediately remove the callback from event listeners so that
        // nested `invokeGuardedCallback` calls do not clash. Otherwise, a
        // nested call would trigger the fake event handlers of any call higher
        // in the stack.
        fakeNode.removeEventListener(evtType, callCallback, false);

        // We check for window.hasOwnProperty('event') to prevent the
        // window.event assignment in both IE <= 10 as they throw an error
        // "Member not found" in strict mode, and in Firefox which does not
        // support window.event.
        if (typeof window.event !== 'undefined' && window.hasOwnProperty('event')) {
          window.event = windowEvent;
        }

        func.apply(context, funcArgs);
        didError = false;
      }

      // Create a global error event handler. We use this to capture the value
      // that was thrown. It's possible that this error handler will fire more
      // than once; for example, if non-React code also calls `dispatchEvent`
      // and a handler for that event throws. We should be resilient to most of
      // those cases. Even if our error event handler fires more than once, the
      // last error event is always used. If the callback actually does error,
      // we know that the last error event is the correct one, because it's not
      // possible for anything else to have happened in between our callback
      // erroring and the code that follows the `dispatchEvent` call below. If
      // the callback doesn't error, but the error event was fired, we know to
      // ignore it because `didError` will be false, as described above.
      var error = void 0;
      // Use this to track whether the error event is ever called.
      var didSetError = false;
      var isCrossOriginError = false;

      function handleWindowError(event) {
        error = event.error;
        didSetError = true;
        if (error === null && event.colno === 0 && event.lineno === 0) {
          isCrossOriginError = true;
        }
        if (event.defaultPrevented) {
          // Some other error handler has prevented default.
          // Browsers silence the error report if this happens.
          // We'll remember this to later decide whether to log it or not.
          if (error != null && typeof error === 'object') {
            try {
              error._suppressLogging = true;
            } catch (inner) {
              // Ignore.
            }
          }
        }
      }

      // Create a fake event type.
      var evtType = 'react-' + (name ? name : 'invokeguardedcallback');

      // Attach our event handlers
      window.addEventListener('error', handleWindowError);
      fakeNode.addEventListener(evtType, callCallback, false);

      // Synchronously dispatch our fake event. If the user-provided function
      // errors, it will trigger our global error handler.
      evt.initEvent(evtType, false, false);
      fakeNode.dispatchEvent(evt);

      if (windowEventDescriptor) {
        Object.defineProperty(window, 'event', windowEventDescriptor);
      }

      if (didError) {
        if (!didSetError) {
          // The callback errored, but the error event never fired.
          error = new Error('An error was thrown inside one of your components, but React ' + "doesn't know what it was. This is likely due to browser " + 'flakiness. React does its best to preserve the "Pause on ' + 'exceptions" behavior of the DevTools, which requires some ' + "DEV-mode only tricks. It's possible that these don't work in " + 'your browser. Try triggering the error in production mode, ' + 'or switching to a modern browser. If you suspect that this is ' + 'actually an issue with React, please file an issue.');
        } else if (isCrossOriginError) {
          error = new Error("A cross-origin error was thrown. React doesn't have access to " + 'the actual error object in development. ' + 'See https://fb.me/react-crossorigin-error for more information.');
        }
        this.onError(error);
      }

      // Remove our event listeners
      window.removeEventListener('error', handleWindowError);
    };

    invokeGuardedCallbackImpl = invokeGuardedCallbackDev;
  }
}

var invokeGuardedCallbackImpl$1 = invokeGuardedCallbackImpl;

// Used by Fiber to simulate a try-catch.
var hasError = false;
var caughtError = null;

// Used by event system to capture/rethrow the first error.
var hasRethrowError = false;
var rethrowError = null;

var reporter = {
  onError: function (error) {
    hasError = true;
    caughtError = error;
  }
};

/**
 * Call a function while guarding against errors that happens within it.
 * Returns an error if it throws, otherwise null.
 *
 * In production, this is implemented using a try-catch. The reason we don't
 * use a try-catch directly is so that we can swap out a different
 * implementation in DEV mode.
 *
 * @param {String} name of the guard to use for logging or debugging
 * @param {Function} func The function to invoke
 * @param {*} context The context to use when calling the function
 * @param {...*} args Arguments for function
 */
function invokeGuardedCallback(name, func, context, a, b, c, d, e, f) {
  hasError = false;
  caughtError = null;
  invokeGuardedCallbackImpl$1.apply(reporter, arguments);
}

/**
 * Same as invokeGuardedCallback, but instead of returning an error, it stores
 * it in a global so it can be rethrown by `rethrowCaughtError` later.
 * TODO: See if caughtError and rethrowError can be unified.
 *
 * @param {String} name of the guard to use for logging or debugging
 * @param {Function} func The function to invoke
 * @param {*} context The context to use when calling the function
 * @param {...*} args Arguments for function
 */
function invokeGuardedCallbackAndCatchFirstError(name, func, context, a, b, c, d, e, f) {
  invokeGuardedCallback.apply(this, arguments);
  if (hasError) {
    var error = clearCaughtError();
    if (!hasRethrowError) {
      hasRethrowError = true;
      rethrowError = error;
    }
  }
}

/**
 * During execution of guarded functions we will capture the first error which
 * we will rethrow to be handled by the top level error handler.
 */
function rethrowCaughtError() {
  if (hasRethrowError) {
    var error = rethrowError;
    hasRethrowError = false;
    rethrowError = null;
    throw error;
  }
}

function hasCaughtError() {
  return hasError;
}

function clearCaughtError() {
  if (hasError) {
    var error = caughtError;
    hasError = false;
    caughtError = null;
    return error;
  } else {
    invariant(false, 'clearCaughtError was called but no error was captured. This error is likely caused by a bug in React. Please file an issue.');
  }
}

/**
 * Injectable ordering of event plugins.
 */
var eventPluginOrder = null;

/**
 * Injectable mapping from names to event plugin modules.
 */
var namesToPlugins = {};

/**
 * Recomputes the plugin list using the injected plugins and plugin ordering.
 *
 * @private
 */
function recomputePluginOrdering() {
  if (!eventPluginOrder) {
    // Wait until an `eventPluginOrder` is injected.
    return;
  }
  for (var pluginName in namesToPlugins) {
    var pluginModule = namesToPlugins[pluginName];
    var pluginIndex = eventPluginOrder.indexOf(pluginName);
    !(pluginIndex > -1) ? invariant(false, 'EventPluginRegistry: Cannot inject event plugins that do not exist in the plugin ordering, `%s`.', pluginName) : void 0;
    if (plugins[pluginIndex]) {
      continue;
    }
    !pluginModule.extractEvents ? invariant(false, 'EventPluginRegistry: Event plugins must implement an `extractEvents` method, but `%s` does not.', pluginName) : void 0;
    plugins[pluginIndex] = pluginModule;
    var publishedEvents = pluginModule.eventTypes;
    for (var eventName in publishedEvents) {
      !publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName) ? invariant(false, 'EventPluginRegistry: Failed to publish event `%s` for plugin `%s`.', eventName, pluginName) : void 0;
    }
  }
}

/**
 * Publishes an event so that it can be dispatched by the supplied plugin.
 *
 * @param {object} dispatchConfig Dispatch configuration for the event.
 * @param {object} PluginModule Plugin publishing the event.
 * @return {boolean} True if the event was successfully published.
 * @private
 */
function publishEventForPlugin(dispatchConfig, pluginModule, eventName) {
  !!eventNameDispatchConfigs.hasOwnProperty(eventName) ? invariant(false, 'EventPluginHub: More than one plugin attempted to publish the same event name, `%s`.', eventName) : void 0;
  eventNameDispatchConfigs[eventName] = dispatchConfig;

  var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames;
  if (phasedRegistrationNames) {
    for (var phaseName in phasedRegistrationNames) {
      if (phasedRegistrationNames.hasOwnProperty(phaseName)) {
        var phasedRegistrationName = phasedRegistrationNames[phaseName];
        publishRegistrationName(phasedRegistrationName, pluginModule, eventName);
      }
    }
    return true;
  } else if (dispatchConfig.registrationName) {
    publishRegistrationName(dispatchConfig.registrationName, pluginModule, eventName);
    return true;
  }
  return false;
}

/**
 * Publishes a registration name that is used to identify dispatched events.
 *
 * @param {string} registrationName Registration name to add.
 * @param {object} PluginModule Plugin publishing the event.
 * @private
 */
function publishRegistrationName(registrationName, pluginModule, eventName) {
  !!registrationNameModules[registrationName] ? invariant(false, 'EventPluginHub: More than one plugin attempted to publish the same registration name, `%s`.', registrationName) : void 0;
  registrationNameModules[registrationName] = pluginModule;
  registrationNameDependencies[registrationName] = pluginModule.eventTypes[eventName].dependencies;

  {
    var lowerCasedName = registrationName.toLowerCase();
    possibleRegistrationNames[lowerCasedName] = registrationName;

    if (registrationName === 'onDoubleClick') {
      possibleRegistrationNames.ondblclick = registrationName;
    }
  }
}

/**
 * Registers plugins so that they can extract and dispatch events.
 *
 * @see {EventPluginHub}
 */

/**
 * Ordered list of injected plugins.
 */
var plugins = [];

/**
 * Mapping from event name to dispatch config
 */
var eventNameDispatchConfigs = {};

/**
 * Mapping from registration name to plugin module
 */
var registrationNameModules = {};

/**
 * Mapping from registration name to event name
 */
var registrationNameDependencies = {};

/**
 * Mapping from lowercase registration names to the properly cased version,
 * used to warn in the case of missing event handlers. Available
 * only in true.
 * @type {Object}
 */
var possibleRegistrationNames = {};
// Trust the developer to only use possibleRegistrationNames in true

/**
 * Injects an ordering of plugins (by plugin name). This allows the ordering
 * to be decoupled from injection of the actual plugins so that ordering is
 * always deterministic regardless of packaging, on-the-fly injection, etc.
 *
 * @param {array} InjectedEventPluginOrder
 * @internal
 * @see {EventPluginHub.injection.injectEventPluginOrder}
 */
function injectEventPluginOrder(injectedEventPluginOrder) {
  !!eventPluginOrder ? invariant(false, 'EventPluginRegistry: Cannot inject event plugin ordering more than once. You are likely trying to load more than one copy of React.') : void 0;
  // Clone the ordering so it cannot be dynamically mutated.
  eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder);
  recomputePluginOrdering();
}

/**
 * Injects plugins to be used by `EventPluginHub`. The plugin names must be
 * in the ordering injected by `injectEventPluginOrder`.
 *
 * Plugins can be injected as part of page initialization or on-the-fly.
 *
 * @param {object} injectedNamesToPlugins Map from names to plugin modules.
 * @internal
 * @see {EventPluginHub.injection.injectEventPluginsByName}
 */
function injectEventPluginsByName(injectedNamesToPlugins) {
  var isOrderingDirty = false;
  for (var pluginName in injectedNamesToPlugins) {
    if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) {
      continue;
    }
    var pluginModule = injectedNamesToPlugins[pluginName];
    if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) {
      !!namesToPlugins[pluginName] ? invariant(false, 'EventPluginRegistry: Cannot inject two different event plugins using the same name, `%s`.', pluginName) : void 0;
      namesToPlugins[pluginName] = pluginModule;
      isOrderingDirty = true;
    }
  }
  if (isOrderingDirty) {
    recomputePluginOrdering();
  }
}

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warningWithoutStack = function () {};

{
  warningWithoutStack = function (condition, format) {
    for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
      args[_key - 2] = arguments[_key];
    }

    if (format === undefined) {
      throw new Error('`warningWithoutStack(condition, format, ...args)` requires a warning ' + 'message argument');
    }
    if (args.length > 8) {
      // Check before the condition to catch violations early.
      throw new Error('warningWithoutStack() currently supports at most 8 arguments.');
    }
    if (condition) {
      return;
    }
    if (typeof console !== 'undefined') {
      var argsWithFormat = args.map(function (item) {
        return '' + item;
      });
      argsWithFormat.unshift('Warning: ' + format);

      // We intentionally don't use spread (or .apply) directly because it
      // breaks IE9: https://github.com/facebook/react/issues/13610
      Function.prototype.apply.call(console.error, console, argsWithFormat);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      var argIndex = 0;
      var message = 'Warning: ' + format.replace(/%s/g, function () {
        return args[argIndex++];
      });
      throw new Error(message);
    } catch (x) {}
  };
}

var warningWithoutStack$1 = warningWithoutStack;

var getFiberCurrentPropsFromNode = null;
var getInstanceFromNode = null;
var getNodeFromInstance = null;

function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) {
  getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl;
  getInstanceFromNode = getInstanceFromNodeImpl;
  getNodeFromInstance = getNodeFromInstanceImpl;
  {
    !(getNodeFromInstance && getInstanceFromNode) ? warningWithoutStack$1(false, 'EventPluginUtils.setComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.') : void 0;
  }
}

var validateEventDispatches = void 0;
{
  validateEventDispatches = function (event) {
    var dispatchListeners = event._dispatchListeners;
    var dispatchInstances = event._dispatchInstances;

    var listenersIsArr = Array.isArray(dispatchListeners);
    var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;

    var instancesIsArr = Array.isArray(dispatchInstances);
    var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;

    !(instancesIsArr === listenersIsArr && instancesLen === listenersLen) ? warningWithoutStack$1(false, 'EventPluginUtils: Invalid `event`.') : void 0;
  };
}

/**
 * Dispatch the event to the listener.
 * @param {SyntheticEvent} event SyntheticEvent to handle
 * @param {function} listener Application-level callback
 * @param {*} inst Internal component instance
 */
function executeDispatch(event, listener, inst) {
  var type = event.type || 'unknown-event';
  event.currentTarget = getNodeFromInstance(inst);
  invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
  event.currentTarget = null;
}

/**
 * Standard/simple iteration through an event's collected dispatches.
 */
function executeDispatchesInOrder(event) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchInstances = event._dispatchInstances;
  {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and Instances are two parallel arrays that are always in sync.
      executeDispatch(event, dispatchListeners[i], dispatchInstances[i]);
    }
  } else if (dispatchListeners) {
    executeDispatch(event, dispatchListeners, dispatchInstances);
  }
  event._dispatchListeners = null;
  event._dispatchInstances = null;
}

/**
 * @see executeDispatchesInOrderStopAtTrueImpl
 */


/**
 * Execution of a "direct" dispatch - there must be at most one dispatch
 * accumulated on the event or it is considered an error. It doesn't really make
 * sense for an event with multiple dispatches (bubbled) to keep track of the
 * return values at each dispatch execution, but it does tend to make sense when
 * dealing with "direct" dispatches.
 *
 * @return {*} The return value of executing the single dispatch.
 */


/**
 * @param {SyntheticEvent} event
 * @return {boolean} True iff number of dispatches accumulated is greater than 0.
 */

/**
 * Accumulates items that must not be null or undefined into the first one. This
 * is used to conserve memory by avoiding array allocations, and thus sacrifices
 * API cleanness. Since `current` can be null before being passed in and not
 * null after this function, make sure to assign it back to `current`:
 *
 * `a = accumulateInto(a, b);`
 *
 * This API should be sparingly used. Try `accumulate` for something cleaner.
 *
 * @return {*|array<*>} An accumulation of items.
 */

function accumulateInto(current, next) {
  !(next != null) ? invariant(false, 'accumulateInto(...): Accumulated items must not be null or undefined.') : void 0;

  if (current == null) {
    return next;
  }

  // Both are not empty. Warning: Never call x.concat(y) when you are not
  // certain that x is an Array (x could be a string with concat method).
  if (Array.isArray(current)) {
    if (Array.isArray(next)) {
      current.push.apply(current, next);
      return current;
    }
    current.push(next);
    return current;
  }

  if (Array.isArray(next)) {
    // A bit too dangerous to mutate `next`.
    return [current].concat(next);
  }

  return [current, next];
}

/**
 * @param {array} arr an "accumulation" of items which is either an Array or
 * a single item. Useful when paired with the `accumulate` module. This is a
 * simple utility that allows us to reason about a collection of items, but
 * handling the case when there is exactly one item (and we do not need to
 * allocate an array).
 * @param {function} cb Callback invoked with each element or a collection.
 * @param {?} [scope] Scope used as `this` in a callback.
 */
function forEachAccumulated(arr, cb, scope) {
  if (Array.isArray(arr)) {
    arr.forEach(cb, scope);
  } else if (arr) {
    cb.call(scope, arr);
  }
}

/**
 * Internal queue of events that have accumulated their dispatches and are
 * waiting to have their dispatches executed.
 */
var eventQueue = null;

/**
 * Dispatches an event and releases it back into the pool, unless persistent.
 *
 * @param {?object} event Synthetic event to be dispatched.
 * @private
 */
var executeDispatchesAndRelease = function (event) {
  if (event) {
    executeDispatchesInOrder(event);

    if (!event.isPersistent()) {
      event.constructor.release(event);
    }
  }
};
var executeDispatchesAndReleaseTopLevel = function (e) {
  return executeDispatchesAndRelease(e);
};

function isInteractive(tag) {
  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
}

function shouldPreventMouseEvent(name, type, props) {
  switch (name) {
    case 'onClick':
    case 'onClickCapture':
    case 'onDoubleClick':
    case 'onDoubleClickCapture':
    case 'onMouseDown':
    case 'onMouseDownCapture':
    case 'onMouseMove':
    case 'onMouseMoveCapture':
    case 'onMouseUp':
    case 'onMouseUpCapture':
      return !!(props.disabled && isInteractive(type));
    default:
      return false;
  }
}

/**
 * This is a unified interface for event plugins to be installed and configured.
 *
 * Event plugins can implement the following properties:
 *
 *   `extractEvents` {function(string, DOMEventTarget, string, object): *}
 *     Required. When a top-level event is fired, this method is expected to
 *     extract synthetic events that will in turn be queued and dispatched.
 *
 *   `eventTypes` {object}
 *     Optional, plugins that fire events must publish a mapping of registration
 *     names that are used to register listeners. Values of this mapping must
 *     be objects that contain `registrationName` or `phasedRegistrationNames`.
 *
 *   `executeDispatch` {function(object, function, string)}
 *     Optional, allows plugins to override how an event gets dispatched. By
 *     default, the listener is simply invoked.
 *
 * Each plugin that is injected into `EventsPluginHub` is immediately operable.
 *
 * @public
 */

/**
 * Methods for injecting dependencies.
 */
var injection = {
  /**
   * @param {array} InjectedEventPluginOrder
   * @public
   */
  injectEventPluginOrder: injectEventPluginOrder,

  /**
   * @param {object} injectedNamesToPlugins Map from names to plugin modules.
   */
  injectEventPluginsByName: injectEventPluginsByName
};

/**
 * @param {object} inst The instance, which is the source of events.
 * @param {string} registrationName Name of listener (e.g. `onClick`).
 * @return {?function} The stored callback.
 */
function getListener(inst, registrationName) {
  var listener = void 0;

  // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
  // live here; needs to be moved to a better place soon
  var stateNode = inst.stateNode;
  if (!stateNode) {
    // Work in progress (ex: onload events in incremental mode).
    return null;
  }
  var props = getFiberCurrentPropsFromNode(stateNode);
  if (!props) {
    // Work in progress.
    return null;
  }
  listener = props[registrationName];
  if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
    return null;
  }
  !(!listener || typeof listener === 'function') ? invariant(false, 'Expected `%s` listener to be a function, instead got a value of `%s` type.', registrationName, typeof listener) : void 0;
  return listener;
}

/**
 * Allows registered plugins an opportunity to extract events from top-level
 * native browser events.
 *
 * @return {*} An accumulation of synthetic events.
 * @internal
 */
function extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
  var events = null;
  for (var i = 0; i < plugins.length; i++) {
    // Not every plugin in the ordering may be loaded at runtime.
    var possiblePlugin = plugins[i];
    if (possiblePlugin) {
      var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget);
      if (extractedEvents) {
        events = accumulateInto(events, extractedEvents);
      }
    }
  }
  return events;
}

function runEventsInBatch(events) {
  if (events !== null) {
    eventQueue = accumulateInto(eventQueue, events);
  }

  // Set `eventQueue` to null before processing it so that we can tell if more
  // events get enqueued while processing.
  var processingEventQueue = eventQueue;
  eventQueue = null;

  if (!processingEventQueue) {
    return;
  }

  forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);
  !!eventQueue ? invariant(false, 'processEventQueue(): Additional events were enqueued while processing an event queue. Support for this has not yet been implemented.') : void 0;
  // This would be a good time to rethrow if any of the event handlers threw.
  rethrowCaughtError();
}

function runExtractedEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
  var events = extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget);
  runEventsInBatch(events);
}

var FunctionComponent = 0;
var ClassComponent = 1;
var IndeterminateComponent = 2; // Before we know whether it is function or class
var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
var HostPortal = 4; // A subtree. Could be an entry point to a different renderer.
var HostComponent = 5;
var HostText = 6;
var Fragment = 7;
var Mode = 8;
var ContextConsumer = 9;
var ContextProvider = 10;
var ForwardRef = 11;
var Profiler = 12;
var SuspenseComponent = 13;
var MemoComponent = 14;
var SimpleMemoComponent = 15;
var LazyComponent = 16;
var IncompleteClassComponent = 17;
var DehydratedSuspenseComponent = 18;

var randomKey = Math.random().toString(36).slice(2);
var internalInstanceKey = '__reactInternalInstance$' + randomKey;
var internalEventHandlersKey = '__reactEventHandlers$' + randomKey;

function precacheFiberNode(hostInst, node) {
  node[internalInstanceKey] = hostInst;
}

/**
 * Given a DOM node, return the closest ReactDOMComponent or
 * ReactDOMTextComponent instance ancestor.
 */
function getClosestInstanceFromNode(node) {
  if (node[internalInstanceKey]) {
    return node[internalInstanceKey];
  }

  while (!node[internalInstanceKey]) {
    if (node.parentNode) {
      node = node.parentNode;
    } else {
      // Top of the tree. This node must not be part of a React tree (or is
      // unmounted, potentially).
      return null;
    }
  }

  var inst = node[internalInstanceKey];
  if (inst.tag === HostComponent || inst.tag === HostText) {
    // In Fiber, this will always be the deepest root.
    return inst;
  }

  return null;
}

/**
 * Given a DOM node, return the ReactDOMComponent or ReactDOMTextComponent
 * instance, or null if the node was not rendered by this React.
 */
function getInstanceFromNode$1(node) {
  var inst = node[internalInstanceKey];
  if (inst) {
    if (inst.tag === HostComponent || inst.tag === HostText) {
      return inst;
    } else {
      return null;
    }
  }
  return null;
}

/**
 * Given a ReactDOMComponent or ReactDOMTextComponent, return the corresponding
 * DOM node.
 */
function getNodeFromInstance$1(inst) {
  if (inst.tag === HostComponent || inst.tag === HostText) {
    // In Fiber this, is just the state node right now. We assume it will be
    // a host component or host text.
    return inst.stateNode;
  }

  // Without this first invariant, passing a non-DOM-component triggers the next
  // invariant for a missing parent, which is super confusing.
  invariant(false, 'getNodeFromInstance: Invalid argument.');
}

function getFiberCurrentPropsFromNode$1(node) {
  return node[internalEventHandlersKey] || null;
}

function updateFiberProps(node, props) {
  node[internalEventHandlersKey] = props;
}

function getParent(inst) {
  do {
    inst = inst.return;
    // TODO: If this is a HostRoot we might want to bail out.
    // That is depending on if we want nested subtrees (layers) to bubble
    // events to their parent. We could also go through parentNode on the
    // host node but that wouldn't work for React Native and doesn't let us
    // do the portal feature.
  } while (inst && inst.tag !== HostComponent);
  if (inst) {
    return inst;
  }
  return null;
}

/**
 * Return the lowest common ancestor of A and B, or null if they are in
 * different trees.
 */
function getLowestCommonAncestor(instA, instB) {
  var depthA = 0;
  for (var tempA = instA; tempA; tempA = getParent(tempA)) {
    depthA++;
  }
  var depthB = 0;
  for (var tempB = instB; tempB; tempB = getParent(tempB)) {
    depthB++;
  }

  // If A is deeper, crawl up.
  while (depthA - depthB > 0) {
    instA = getParent(instA);
    depthA--;
  }

  // If B is deeper, crawl up.
  while (depthB - depthA > 0) {
    instB = getParent(instB);
    depthB--;
  }

  // Walk in lockstep until we find a match.
  var depth = depthA;
  while (depth--) {
    if (instA === instB || instA === instB.alternate) {
      return instA;
    }
    instA = getParent(instA);
    instB = getParent(instB);
  }
  return null;
}

/**
 * Return if A is an ancestor of B.
 */


/**
 * Return the parent instance of the passed-in instance.
 */


/**
 * Simulates the traversal of a two-phase, capture/bubble event dispatch.
 */
function traverseTwoPhase(inst, fn, arg) {
  var path = [];
  while (inst) {
    path.push(inst);
    inst = getParent(inst);
  }
  var i = void 0;
  for (i = path.length; i-- > 0;) {
    fn(path[i], 'captured', arg);
  }
  for (i = 0; i < path.length; i++) {
    fn(path[i], 'bubbled', arg);
  }
}

/**
 * Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that
 * should would receive a `mouseEnter` or `mouseLeave` event.
 *
 * Does not invoke the callback on the nearest common ancestor because nothing
 * "entered" or "left" that element.
 */
function traverseEnterLeave(from, to, fn, argFrom, argTo) {
  var common = from && to ? getLowestCommonAncestor(from, to) : null;
  var pathFrom = [];
  while (true) {
    if (!from) {
      break;
    }
    if (from === common) {
      break;
    }
    var alternate = from.alternate;
    if (alternate !== null && alternate === common) {
      break;
    }
    pathFrom.push(from);
    from = getParent(from);
  }
  var pathTo = [];
  while (true) {
    if (!to) {
      break;
    }
    if (to === common) {
      break;
    }
    var _alternate = to.alternate;
    if (_alternate !== null && _alternate === common) {
      break;
    }
    pathTo.push(to);
    to = getParent(to);
  }
  for (var i = 0; i < pathFrom.length; i++) {
    fn(pathFrom[i], 'bubbled', argFrom);
  }
  for (var _i = pathTo.length; _i-- > 0;) {
    fn(pathTo[_i], 'captured', argTo);
  }
}

/**
 * Some event types have a notion of different registration names for different
 * "phases" of propagation. This finds listeners by a given phase.
 */
function listenerAtPhase(inst, event, propagationPhase) {
  var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
  return getListener(inst, registrationName);
}

/**
 * A small set of propagation patterns, each of which will accept a small amount
 * of information, and generate a set of "dispatch ready event objects" - which
 * are sets of events that have already been annotated with a set of dispatched
 * listener functions/ids. The API is designed this way to discourage these
 * propagation strategies from actually executing the dispatches, since we
 * always want to collect the entire set of dispatches before executing even a
 * single one.
 */

/**
 * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
 * here, allows us to not have to bind or create functions for each event.
 * Mutating the event's members allows us to not have to create a wrapping
 * "dispatch" object that pairs the event with the listener.
 */
function accumulateDirectionalDispatches(inst, phase, event) {
  {
    !inst ? warningWithoutStack$1(false, 'Dispatching inst must not be null') : void 0;
  }
  var listener = listenerAtPhase(inst, event, phase);
  if (listener) {
    event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
    event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
  }
}

/**
 * Collect dispatches (must be entirely collected before dispatching - see unit
 * tests). Lazily allocate the array to conserve memory.  We must loop through
 * each event and perform the traversal for each one. We cannot perform a
 * single traversal for the entire collection of events because each event may
 * have a different target.
 */
function accumulateTwoPhaseDispatchesSingle(event) {
  if (event && event.dispatchConfig.phasedRegistrationNames) {
    traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
  }
}

/**
 * Accumulates without regard to direction, does not look for phased
 * registration names. Same as `accumulateDirectDispatchesSingle` but without
 * requiring that the `dispatchMarker` be the same as the dispatched ID.
 */
function accumulateDispatches(inst, ignoredDirection, event) {
  if (inst && event && event.dispatchConfig.registrationName) {
    var registrationName = event.dispatchConfig.registrationName;
    var listener = getListener(inst, registrationName);
    if (listener) {
      event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
      event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
    }
  }
}

/**
 * Accumulates dispatches on an `SyntheticEvent`, but only for the
 * `dispatchMarker`.
 * @param {SyntheticEvent} event
 */
function accumulateDirectDispatchesSingle(event) {
  if (event && event.dispatchConfig.registrationName) {
    accumulateDispatches(event._targetInst, null, event);
  }
}

function accumulateTwoPhaseDispatches(events) {
  forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
}



function accumulateEnterLeaveDispatches(leave, enter, from, to) {
  traverseEnterLeave(from, to, accumulateDispatches, leave, enter);
}

function accumulateDirectDispatches(events) {
  forEachAccumulated(events, accumulateDirectDispatchesSingle);
}

var canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);

// Do not uses the below two methods directly!
// Instead use constants exported from DOMTopLevelEventTypes in ReactDOM.
// (It is the only module that is allowed to access these methods.)

function unsafeCastStringToDOMTopLevelType(topLevelType) {
  return topLevelType;
}

function unsafeCastDOMTopLevelTypeToString(topLevelType) {
  return topLevelType;
}

/**
 * Generate a mapping of standard vendor prefixes using the defined style property and event name.
 *
 * @param {string} styleProp
 * @param {string} eventName
 * @returns {object}
 */
function makePrefixMap(styleProp, eventName) {
  var prefixes = {};

  prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
  prefixes['Webkit' + styleProp] = 'webkit' + eventName;
  prefixes['Moz' + styleProp] = 'moz' + eventName;

  return prefixes;
}

/**
 * A list of event names to a configurable list of vendor prefixes.
 */
var vendorPrefixes = {
  animationend: makePrefixMap('Animation', 'AnimationEnd'),
  animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
  animationstart: makePrefixMap('Animation', 'AnimationStart'),
  transitionend: makePrefixMap('Transition', 'TransitionEnd')
};

/**
 * Event names that have already been detected and prefixed (if applicable).
 */
var prefixedEventNames = {};

/**
 * Element to check for prefixes on.
 */
var style = {};

/**
 * Bootstrap if a DOM exists.
 */
if (canUseDOM) {
  style = document.createElement('div').style;

  // On some platforms, in particular some releases of Android 4.x,
  // the un-prefixed "animation" and "transition" properties are defined on the
  // style object but the events that fire will still be prefixed, so we need
  // to check if the un-prefixed events are usable, and if not remove them from the map.
  if (!('AnimationEvent' in window)) {
    delete vendorPrefixes.animationend.animation;
    delete vendorPrefixes.animationiteration.animation;
    delete vendorPrefixes.animationstart.animation;
  }

  // Same as above
  if (!('TransitionEvent' in window)) {
    delete vendorPrefixes.transitionend.transition;
  }
}

/**
 * Attempts to determine the correct vendor prefixed event name.
 *
 * @param {string} eventName
 * @returns {string}
 */
function getVendorPrefixedEventName(eventName) {
  if (prefixedEventNames[eventName]) {
    return prefixedEventNames[eventName];
  } else if (!vendorPrefixes[eventName]) {
    return eventName;
  }

  var prefixMap = vendorPrefixes[eventName];

  for (var styleProp in prefixMap) {
    if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
      return prefixedEventNames[eventName] = prefixMap[styleProp];
    }
  }

  return eventName;
}

/**
 * To identify top level events in ReactDOM, we use constants defined by this
 * module. This is the only module that uses the unsafe* methods to express
 * that the constants actually correspond to the browser event names. This lets
 * us save some bundle size by avoiding a top level type -> event name map.
 * The rest of ReactDOM code should import top level types from this file.
 */
var TOP_ABORT = unsafeCastStringToDOMTopLevelType('abort');
var TOP_ANIMATION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationend'));
var TOP_ANIMATION_ITERATION = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationiteration'));
var TOP_ANIMATION_START = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationstart'));
var TOP_BLUR = unsafeCastStringToDOMTopLevelType('blur');
var TOP_CAN_PLAY = unsafeCastStringToDOMTopLevelType('canplay');
var TOP_CAN_PLAY_THROUGH = unsafeCastStringToDOMTopLevelType('canplaythrough');
var TOP_CANCEL = unsafeCastStringToDOMTopLevelType('cancel');
var TOP_CHANGE = unsafeCastStringToDOMTopLevelType('change');
var TOP_CLICK = unsafeCastStringToDOMTopLevelType('click');
var TOP_CLOSE = unsafeCastStringToDOMTopLevelType('close');
var TOP_COMPOSITION_END = unsafeCastStringToDOMTopLevelType('compositionend');
var TOP_COMPOSITION_START = unsafeCastStringToDOMTopLevelType('compositionstart');
var TOP_COMPOSITION_UPDATE = unsafeCastStringToDOMTopLevelType('compositionupdate');
var TOP_CONTEXT_MENU = unsafeCastStringToDOMTopLevelType('contextmenu');
var TOP_COPY = unsafeCastStringToDOMTopLevelType('copy');
var TOP_CUT = unsafeCastStringToDOMTopLevelType('cut');
var TOP_DOUBLE_CLICK = unsafeCastStringToDOMTopLevelType('dblclick');
var TOP_AUX_CLICK = unsafeCastStringToDOMTopLevelType('auxclick');
var TOP_DRAG = unsafeCastStringToDOMTopLevelType('drag');
var TOP_DRAG_END = unsafeCastStringToDOMTopLevelType('dragend');
var TOP_DRAG_ENTER = unsafeCastStringToDOMTopLevelType('dragenter');
var TOP_DRAG_EXIT = unsafeCastStringToDOMTopLevelType('dragexit');
var TOP_DRAG_LEAVE = unsafeCastStringToDOMTopLevelType('dragleave');
var TOP_DRAG_OVER = unsafeCastStringToDOMTopLevelType('dragover');
var TOP_DRAG_START = unsafeCastStringToDOMTopLevelType('dragstart');
var TOP_DROP = unsafeCastStringToDOMTopLevelType('drop');
var TOP_DURATION_CHANGE = unsafeCastStringToDOMTopLevelType('durationchange');
var TOP_EMPTIED = unsafeCastStringToDOMTopLevelType('emptied');
var TOP_ENCRYPTED = unsafeCastStringToDOMTopLevelType('encrypted');
var TOP_ENDED = unsafeCastStringToDOMTopLevelType('ended');
var TOP_ERROR = unsafeCastStringToDOMTopLevelType('error');
var TOP_FOCUS = unsafeCastStringToDOMTopLevelType('focus');
var TOP_GOT_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('gotpointercapture');
var TOP_INPUT = unsafeCastStringToDOMTopLevelType('input');
var TOP_INVALID = unsafeCastStringToDOMTopLevelType('invalid');
var TOP_KEY_DOWN = unsafeCastStringToDOMTopLevelType('keydown');
var TOP_KEY_PRESS = unsafeCastStringToDOMTopLevelType('keypress');
var TOP_KEY_UP = unsafeCastStringToDOMTopLevelType('keyup');
var TOP_LOAD = unsafeCastStringToDOMTopLevelType('load');
var TOP_LOAD_START = unsafeCastStringToDOMTopLevelType('loadstart');
var TOP_LOADED_DATA = unsafeCastStringToDOMTopLevelType('loadeddata');
var TOP_LOADED_METADATA = unsafeCastStringToDOMTopLevelType('loadedmetadata');
var TOP_LOST_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('lostpointercapture');
var TOP_MOUSE_DOWN = unsafeCastStringToDOMTopLevelType('mousedown');
var TOP_MOUSE_MOVE = unsafeCastStringToDOMTopLevelType('mousemove');
var TOP_MOUSE_OUT = unsafeCastStringToDOMTopLevelType('mouseout');
var TOP_MOUSE_OVER = unsafeCastStringToDOMTopLevelType('mouseover');
var TOP_MOUSE_UP = unsafeCastStringToDOMTopLevelType('mouseup');
var TOP_PASTE = unsafeCastStringToDOMTopLevelType('paste');
var TOP_PAUSE = unsafeCastStringToDOMTopLevelType('pause');
var TOP_PLAY = unsafeCastStringToDOMTopLevelType('play');
var TOP_PLAYING = unsafeCastStringToDOMTopLevelType('playing');
var TOP_POINTER_CANCEL = unsafeCastStringToDOMTopLevelType('pointercancel');
var TOP_POINTER_DOWN = unsafeCastStringToDOMTopLevelType('pointerdown');


var TOP_POINTER_MOVE = unsafeCastStringToDOMTopLevelType('pointermove');
var TOP_POINTER_OUT = unsafeCastStringToDOMTopLevelType('pointerout');
var TOP_POINTER_OVER = unsafeCastStringToDOMTopLevelType('pointerover');
var TOP_POINTER_UP = unsafeCastStringToDOMTopLevelType('pointerup');
var TOP_PROGRESS = unsafeCastStringToDOMTopLevelType('progress');
var TOP_RATE_CHANGE = unsafeCastStringToDOMTopLevelType('ratechange');
var TOP_RESET = unsafeCastStringToDOMTopLevelType('reset');
var TOP_SCROLL = unsafeCastStringToDOMTopLevelType('scroll');
var TOP_SEEKED = unsafeCastStringToDOMTopLevelType('seeked');
var TOP_SEEKING = unsafeCastStringToDOMTopLevelType('seeking');
var TOP_SELECTION_CHANGE = unsafeCastStringToDOMTopLevelType('selectionchange');
var TOP_STALLED = unsafeCastStringToDOMTopLevelType('stalled');
var TOP_SUBMIT = unsafeCastStringToDOMTopLevelType('submit');
var TOP_SUSPEND = unsafeCastStringToDOMTopLevelType('suspend');
var TOP_TEXT_INPUT = unsafeCastStringToDOMTopLevelType('textInput');
var TOP_TIME_UPDATE = unsafeCastStringToDOMTopLevelType('timeupdate');
var TOP_TOGGLE = unsafeCastStringToDOMTopLevelType('toggle');
var TOP_TOUCH_CANCEL = unsafeCastStringToDOMTopLevelType('touchcancel');
var TOP_TOUCH_END = unsafeCastStringToDOMTopLevelType('touchend');
var TOP_TOUCH_MOVE = unsafeCastStringToDOMTopLevelType('touchmove');
var TOP_TOUCH_START = unsafeCastStringToDOMTopLevelType('touchstart');
var TOP_TRANSITION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('transitionend'));
var TOP_VOLUME_CHANGE = unsafeCastStringToDOMTopLevelType('volumechange');
var TOP_WAITING = unsafeCastStringToDOMTopLevelType('waiting');
var TOP_WHEEL = unsafeCastStringToDOMTopLevelType('wheel');

// List of events that need to be individually attached to media elements.
// Note that events in this list will *not* be listened to at the top level
// unless they're explicitly whitelisted in `ReactBrowserEventEmitter.listenTo`.
var mediaEventTypes = [TOP_ABORT, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_VOLUME_CHANGE, TOP_WAITING];

function getRawEventName(topLevelType) {
  return unsafeCastDOMTopLevelTypeToString(topLevelType);
}

/**
 * These variables store information about text content of a target node,
 * allowing comparison of content before and after a given event.
 *
 * Identify the node where selection currently begins, then observe
 * both its text content and its current position in the DOM. Since the
 * browser may natively replace the target node during composition, we can
 * use its position to find its replacement.
 *
 *
 */

var root = null;
var startText = null;
var fallbackText = null;

function initialize(nativeEventTarget) {
  root = nativeEventTarget;
  startText = getText();
  return true;
}

function reset() {
  root = null;
  startText = null;
  fallbackText = null;
}

function getData() {
  if (fallbackText) {
    return fallbackText;
  }

  var start = void 0;
  var startValue = startText;
  var startLength = startValue.length;
  var end = void 0;
  var endValue = getText();
  var endLength = endValue.length;

  for (start = 0; start < startLength; start++) {
    if (startValue[start] !== endValue[start]) {
      break;
    }
  }

  var minEnd = startLength - start;
  for (end = 1; end <= minEnd; end++) {
    if (startValue[startLength - end] !== endValue[endLength - end]) {
      break;
    }
  }

  var sliceTail = end > 1 ? 1 - end : undefined;
  fallbackText = endValue.slice(start, sliceTail);
  return fallbackText;
}

function getText() {
  if ('value' in root) {
    return root.value;
  }
  return root.textContent;
}

/* eslint valid-typeof: 0 */

var EVENT_POOL_SIZE = 10;

/**
 * @interface Event
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var EventInterface = {
  type: null,
  target: null,
  // currentTarget is set when dispatching; no use in copying it here
  currentTarget: function () {
    return null;
  },
  eventPhase: null,
  bubbles: null,
  cancelable: null,
  timeStamp: function (event) {
    return event.timeStamp || Date.now();
  },
  defaultPrevented: null,
  isTrusted: null
};

function functionThatReturnsTrue() {
  return true;
}

function functionThatReturnsFalse() {
  return false;
}

/**
 * Synthetic events are dispatched by event plugins, typically in response to a
 * top-level event delegation handler.
 *
 * These systems should generally use pooling to reduce the frequency of garbage
 * collection. The system should check `isPersistent` to determine whether the
 * event should be released into the pool after being dispatched. Users that
 * need a persisted event should invoke `persist`.
 *
 * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
 * normalizing browser quirks. Subclasses do not necessarily have to implement a
 * DOM interface; custom application-specific events can also subclass this.
 *
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {*} targetInst Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @param {DOMEventTarget} nativeEventTarget Target node.
 */
function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
  {
    // these have a getter/setter for warnings
    delete this.nativeEvent;
    delete this.preventDefault;
    delete this.stopPropagation;
    delete this.isDefaultPrevented;
    delete this.isPropagationStopped;
  }

  this.dispatchConfig = dispatchConfig;
  this._targetInst = targetInst;
  this.nativeEvent = nativeEvent;

  var Interface = this.constructor.Interface;
  for (var propName in Interface) {
    if (!Interface.hasOwnProperty(propName)) {
      continue;
    }
    {
      delete this[propName]; // this has a getter/setter for warnings
    }
    var normalize = Interface[propName];
    if (normalize) {
      this[propName] = normalize(nativeEvent);
    } else {
      if (propName === 'target') {
        this.target = nativeEventTarget;
      } else {
        this[propName] = nativeEvent[propName];
      }
    }
  }

  var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
  if (defaultPrevented) {
    this.isDefaultPrevented = functionThatReturnsTrue;
  } else {
    this.isDefaultPrevented = functionThatReturnsFalse;
  }
  this.isPropagationStopped = functionThatReturnsFalse;
  return this;
}

_assign(SyntheticEvent.prototype, {
  preventDefault: function () {
    this.defaultPrevented = true;
    var event = this.nativeEvent;
    if (!event) {
      return;
    }

    if (event.preventDefault) {
      event.preventDefault();
    } else if (typeof event.returnValue !== 'unknown') {
      event.returnValue = false;
    }
    this.isDefaultPrevented = functionThatReturnsTrue;
  },

  stopPropagation: function () {
    var event = this.nativeEvent;
    if (!event) {
      return;
    }

    if (event.stopPropagation) {
      event.stopPropagation();
    } else if (typeof event.cancelBubble !== 'unknown') {
      // The ChangeEventPlugin registers a "propertychange" event for
      // IE. This event does not support bubbling or cancelling, and
      // any references to cancelBubble throw "Member not found".  A
      // typeof check of "unknown" circumvents this issue (and is also
      // IE specific).
      event.cancelBubble = true;
    }

    this.isPropagationStopped = functionThatReturnsTrue;
  },

  /**
   * We release all dispatched `SyntheticEvent`s after each event loop, adding
   * them back into the pool. This allows a way to hold onto a reference that
   * won't be added back into the pool.
   */
  persist: function () {
    this.isPersistent = functionThatReturnsTrue;
  },

  /**
   * Checks if this event should be released back into the pool.
   *
   * @return {boolean} True if this should not be released, false otherwise.
   */
  isPersistent: functionThatReturnsFalse,

  /**
   * `PooledClass` looks for `destructor` on each instance it releases.
   */
  destructor: function () {
    var Interface = this.constructor.Interface;
    for (var propName in Interface) {
      {
        Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
      }
    }
    this.dispatchConfig = null;
    this._targetInst = null;
    this.nativeEvent = null;
    this.isDefaultPrevented = functionThatReturnsFalse;
    this.isPropagationStopped = functionThatReturnsFalse;
    this._dispatchListeners = null;
    this._dispatchInstances = null;
    {
      Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
      Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
      Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
      Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
      Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
    }
  }
});

SyntheticEvent.Interface = EventInterface;

/**
 * Helper to reduce boilerplate when creating subclasses.
 */
SyntheticEvent.extend = function (Interface) {
  var Super = this;

  var E = function () {};
  E.prototype = Super.prototype;
  var prototype = new E();

  function Class() {
    return Super.apply(this, arguments);
  }
  _assign(prototype, Class.prototype);
  Class.prototype = prototype;
  Class.prototype.constructor = Class;

  Class.Interface = _assign({}, Super.Interface, Interface);
  Class.extend = Super.extend;
  addEventPoolingTo(Class);

  return Class;
};

addEventPoolingTo(SyntheticEvent);

/**
 * Helper to nullify syntheticEvent instance properties when destructing
 *
 * @param {String} propName
 * @param {?object} getVal
 * @return {object} defineProperty object
 */
function getPooledWarningPropertyDefinition(propName, getVal) {
  var isFunction = typeof getVal === 'function';
  return {
    configurable: true,
    set: set,
    get: get
  };

  function set(val) {
    var action = isFunction ? 'setting the method' : 'setting the property';
    warn(action, 'This is effectively a no-op');
    return val;
  }

  function get() {
    var action = isFunction ? 'accessing the method' : 'accessing the property';
    var result = isFunction ? 'This is a no-op function' : 'This is set to null';
    warn(action, result);
    return getVal;
  }

  function warn(action, result) {
    var warningCondition = false;
    !warningCondition ? warningWithoutStack$1(false, "This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result) : void 0;
  }
}

function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
  var EventConstructor = this;
  if (EventConstructor.eventPool.length) {
    var instance = EventConstructor.eventPool.pop();
    EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
    return instance;
  }
  return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
}

function releasePooledEvent(event) {
  var EventConstructor = this;
  !(event instanceof EventConstructor) ? invariant(false, 'Trying to release an event instance into a pool of a different type.') : void 0;
  event.destructor();
  if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
    EventConstructor.eventPool.push(event);
  }
}

function addEventPoolingTo(EventConstructor) {
  EventConstructor.eventPool = [];
  EventConstructor.getPooled = getPooledEvent;
  EventConstructor.release = releasePooledEvent;
}

/**
 * @interface Event
 * @see http://www.w3.org/TR/DOM-Level-3-Events/#events-compositionevents
 */
var SyntheticCompositionEvent = SyntheticEvent.extend({
  data: null
});

/**
 * @interface Event
 * @see http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105
 *      /#events-inputevents
 */
var SyntheticInputEvent = SyntheticEvent.extend({
  data: null
});

var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space
var START_KEYCODE = 229;

var canUseCompositionEvent = canUseDOM && 'CompositionEvent' in window;

var documentMode = null;
if (canUseDOM && 'documentMode' in document) {
  documentMode = document.documentMode;
}

// Webkit offers a very useful `textInput` event that can be used to
// directly represent `beforeInput`. The IE `textinput` event is not as
// useful, so we don't use it.
var canUseTextInputEvent = canUseDOM && 'TextEvent' in window && !documentMode;

// In IE9+, we have access to composition events, but the data supplied
// by the native compositionend event may be incorrect. Japanese ideographic
// spaces, for instance (\u3000) are not recorded correctly.
var useFallbackCompositionData = canUseDOM && (!canUseCompositionEvent || documentMode && documentMode > 8 && documentMode <= 11);

var SPACEBAR_CODE = 32;
var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE);

// Events and their corresponding property names.
var eventTypes = {
  beforeInput: {
    phasedRegistrationNames: {
      bubbled: 'onBeforeInput',
      captured: 'onBeforeInputCapture'
    },
    dependencies: [TOP_COMPOSITION_END, TOP_KEY_PRESS, TOP_TEXT_INPUT, TOP_PASTE]
  },
  compositionEnd: {
    phasedRegistrationNames: {
      bubbled: 'onCompositionEnd',
      captured: 'onCompositionEndCapture'
    },
    dependencies: [TOP_BLUR, TOP_COMPOSITION_END, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
  },
  compositionStart: {
    phasedRegistrationNames: {
      bubbled: 'onCompositionStart',
      captured: 'onCompositionStartCapture'
    },
    dependencies: [TOP_BLUR, TOP_COMPOSITION_START, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
  },
  compositionUpdate: {
    phasedRegistrationNames: {
      bubbled: 'onCompositionUpdate',
      captured: 'onCompositionUpdateCapture'
    },
    dependencies: [TOP_BLUR, TOP_COMPOSITION_UPDATE, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
  }
};

// Track whether we've ever handled a keypress on the space key.
var hasSpaceKeypress = false;

/**
 * Return whether a native keypress event is assumed to be a command.
 * This is required because Firefox fires `keypress` events for key commands
 * (cut, copy, select-all, etc.) even though no character is inserted.
 */
function isKeypressCommand(nativeEvent) {
  return (nativeEvent.ctrlKey || nativeEvent.altKey || nativeEvent.metaKey) &&
  // ctrlKey && altKey is equivalent to AltGr, and is not a command.
  !(nativeEvent.ctrlKey && nativeEvent.altKey);
}

/**
 * Translate native top level events into event types.
 *
 * @param {string} topLevelType
 * @return {object}
 */
function getCompositionEventType(topLevelType) {
  switch (topLevelType) {
    case TOP_COMPOSITION_START:
      return eventTypes.compositionStart;
    case TOP_COMPOSITION_END:
      return eventTypes.compositionEnd;
    case TOP_COMPOSITION_UPDATE:
      return eventTypes.compositionUpdate;
  }
}

/**
 * Does our fallback best-guess model think this event signifies that
 * composition has begun?
 *
 * @param {string} topLevelType
 * @param {object} nativeEvent
 * @return {boolean}
 */
function isFallbackCompositionStart(topLevelType, nativeEvent) {
  return topLevelType === TOP_KEY_DOWN && nativeEvent.keyCode === START_KEYCODE;
}

/**
 * Does our fallback mode think that this event is the end of composition?
 *
 * @param {string} topLevelType
 * @param {object} nativeEvent
 * @return {boolean}
 */
function isFallbackCompositionEnd(topLevelType, nativeEvent) {
  switch (topLevelType) {
    case TOP_KEY_UP:
      // Command keys insert or clear IME input.
      return END_KEYCODES.indexOf(nativeEvent.keyCode) !== -1;
    case TOP_KEY_DOWN:
      // Expect IME keyCode on each keydown. If we get any other
      // code we must have exited earlier.
      return nativeEvent.keyCode !== START_KEYCODE;
    case TOP_KEY_PRESS:
    case TOP_MOUSE_DOWN:
    case TOP_BLUR:
      // Events are not possible without cancelling IME.
      return true;
    default:
      return false;
  }
}

/**
 * Google Input Tools provides composition data via a CustomEvent,
 * with the `data` property populated in the `detail` object. If this
 * is available on the event object, use it. If not, this is a plain
 * composition event and we have nothing special to extract.
 *
 * @param {object} nativeEvent
 * @return {?string}
 */
function getDataFromCustomEvent(nativeEvent) {
  var detail = nativeEvent.detail;
  if (typeof detail === 'object' && 'data' in detail) {
    return detail.data;
  }
  return null;
}

/**
 * Check if a composition event was triggered by Korean IME.
 * Our fallback mode does not work well with IE's Korean IME,
 * so just use native composition events when Korean IME is used.
 * Although CompositionEvent.locale property is deprecated,
 * it is available in IE, where our fallback mode is enabled.
 *
 * @param {object} nativeEvent
 * @return {boolean}
 */
function isUsingKoreanIME(nativeEvent) {
  return nativeEvent.locale === 'ko';
}

// Track the current IME composition status, if any.
var isComposing = false;

/**
 * @return {?object} A SyntheticCompositionEvent.
 */
function extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
  var eventType = void 0;
  var fallbackData = void 0;

  if (canUseCompositionEvent) {
    eventType = getCompositionEventType(topLevelType);
  } else if (!isComposing) {
    if (isFallbackCompositionStart(topLevelType, nativeEvent)) {
      eventType = eventTypes.compositionStart;
    }
  } else if (isFallbackCompositionEnd(topLevelType, nativeEvent)) {
    eventType = eventTypes.compositionEnd;
  }

  if (!eventType) {
    return null;
  }

  if (useFallbackCompositionData && !isUsingKoreanIME(nativeEvent)) {
    // The current composition is stored statically and must not be
    // overwritten while composition continues.
    if (!isComposing && eventType === eventTypes.compositionStart) {
      isComposing = initialize(nativeEventTarget);
    } else if (eventType === eventTypes.compositionEnd) {
      if (isComposing) {
        fallbackData = getData();
      }
    }
  }

  var event = SyntheticCompositionEvent.getPooled(eventType, targetInst, nativeEvent, nativeEventTarget);

  if (fallbackData) {
    // Inject data generated from fallback path into the synthetic event.
    // This matches the property of native CompositionEventInterface.
    event.data = fallbackData;
  } else {
    var customData = getDataFromCustomEvent(nativeEvent);
    if (customData !== null) {
      event.data = customData;
    }
  }

  accumulateTwoPhaseDispatches(event);
  return event;
}

/**
 * @param {TopLevelType} topLevelType Number from `TopLevelType`.
 * @param {object} nativeEvent Native browser event.
 * @return {?string} The string corresponding to this `beforeInput` event.
 */
function getNativeBeforeInputChars(topLevelType, nativeEvent) {
  switch (topLevelType) {
    case TOP_COMPOSITION_END:
      return getDataFromCustomEvent(nativeEvent);
    case TOP_KEY_PRESS:
      /**
       * If native `textInput` events are available, our goal is to make
       * use of them. However, there is a special case: the spacebar key.
       * In Webkit, preventing default on a spacebar `textInput` event
       * cancels character insertion, but it *also* causes the browser
       * to fall back to its default spacebar behavior of scrolling the
       * page.
       *
       * Tracking at:
       * https://code.google.com/p/chromium/issues/detail?id=355103
       *
       * To avoid this issue, use the keypress event as if no `textInput`
       * event is available.
       */
      var which = nativeEvent.which;
      if (which !== SPACEBAR_CODE) {
        return null;
      }

      hasSpaceKeypress = true;
      return SPACEBAR_CHAR;

    case TOP_TEXT_INPUT:
      // Record the characters to be added to the DOM.
      var chars = nativeEvent.data;

      // If it's a spacebar character, assume that we have already handled
      // it at the keypress level and bail immediately. Android Chrome
      // doesn't give us keycodes, so we need to ignore it.
      if (chars === SPACEBAR_CHAR && hasSpaceKeypress) {
        return null;
      }

      return chars;

    default:
      // For other native event types, do nothing.
      return null;
  }
}

/**
 * For browsers that do not provide the `textInput` event, extract the
 * appropriate string to use for SyntheticInputEvent.
 *
 * @param {number} topLevelType Number from `TopLevelEventTypes`.
 * @param {object} nativeEvent Native browser event.
 * @return {?string} The fallback string for this `beforeInput` event.
 */
function getFallbackBeforeInputChars(topLevelType, nativeEvent) {
  // If we are currently composing (IME) and using a fallback to do so,
  // try to extract the composed characters from the fallback object.
  // If composition event is available, we extract a string only at
  // compositionevent, otherwise extract it at fallback events.
  if (isComposing) {
    if (topLevelType === TOP_COMPOSITION_END || !canUseCompositionEvent && isFallbackCompositionEnd(topLevelType, nativeEvent)) {
      var chars = getData();
      reset();
      isComposing = false;
      return chars;
    }
    return null;
  }

  switch (topLevelType) {
    case TOP_PASTE:
      // If a paste event occurs after a keypress, throw out the input
      // chars. Paste events should not lead to BeforeInput events.
      return null;
    case TOP_KEY_PRESS:
      /**
       * As of v27, Firefox may fire keypress events even when no character
       * will be inserted. A few possibilities:
       *
       * - `which` is `0`. Arrow keys, Esc key, etc.
       *
       * - `which` is the pressed key code, but no char is available.
       *   Ex: 'AltGr + d` in Polish. There is no modified character for
       *   this key combination and no character is inserted into the
       *   document, but FF fires the keypress for char code `100` anyway.
       *   No `input` event will occur.
       *
       * - `which` is the pressed key code, but a command combination is
       *   being used. Ex: `Cmd+C`. No character is inserted, and no
       *   `input` event will occur.
       */
      if (!isKeypressCommand(nativeEvent)) {
        // IE fires the `keypress` event when a user types an emoji via
        // Touch keyboard of Windows.  In such a case, the `char` property
        // holds an emoji character like `\uD83D\uDE0A`.  Because its length
        // is 2, the property `which` does not represent an emoji correctly.
        // In such a case, we directly return the `char` property instead of
        // using `which`.
        if (nativeEvent.char && nativeEvent.char.length > 1) {
          return nativeEvent.char;
        } else if (nativeEvent.which) {
          return String.fromCharCode(nativeEvent.which);
        }
      }
      return null;
    case TOP_COMPOSITION_END:
      return useFallbackCompositionData && !isUsingKoreanIME(nativeEvent) ? null : nativeEvent.data;
    default:
      return null;
  }
}

/**
 * Extract a SyntheticInputEvent for `beforeInput`, based on either native
 * `textInput` or fallback behavior.
 *
 * @return {?object} A SyntheticInputEvent.
 */
function extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
  var chars = void 0;

  if (canUseTextInputEvent) {
    chars = getNativeBeforeInputChars(topLevelType, nativeEvent);
  } else {
    chars = getFallbackBeforeInputChars(topLevelType, nativeEvent);
  }

  // If no characters are being inserted, no BeforeInput event should
  // be fired.
  if (!chars) {
    return null;
  }

  var event = SyntheticInputEvent.getPooled(eventTypes.beforeInput, targetInst, nativeEvent, nativeEventTarget);

  event.data = chars;
  accumulateTwoPhaseDispatches(event);
  return event;
}

/**
 * Create an `onBeforeInput` event to match
 * http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105/#events-inputevents.
 *
 * This event plugin is based on the native `textInput` event
 * available in Chrome, Safari, Opera, and IE. This event fires after
 * `onKeyPress` and `onCompositionEnd`, but before `onInput`.
 *
 * `beforeInput` is spec'd but not implemented in any browsers, and
 * the `input` event does not provide any useful information about what has
 * actually been added, contrary to the spec. Thus, `textInput` is the best
 * available event to identify the characters that have actually been inserted
 * into the target node.
 *
 * This plugin is also responsible for emitting `composition` events, thus
 * allowing us to share composition fallback code for both `beforeInput` and
 * `composition` event types.
 */
var BeforeInputEventPlugin = {
  eventTypes: eventTypes,

  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var composition = extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget);

    var beforeInput = extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget);

    if (composition === null) {
      return beforeInput;
    }

    if (beforeInput === null) {
      return composition;
    }

    return [composition, beforeInput];
  }
};

// Use to restore controlled state after a change event has fired.

var restoreImpl = null;
var restoreTarget = null;
var restoreQueue = null;

function restoreStateOfTarget(target) {
  // We perform this translation at the end of the event loop so that we
  // always receive the correct fiber here
  var internalInstance = getInstanceFromNode(target);
  if (!internalInstance) {
    // Unmounted
    return;
  }
  !(typeof restoreImpl === 'function') ? invariant(false, 'setRestoreImplementation() needs to be called to handle a target for controlled events. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  var props = getFiberCurrentPropsFromNode(internalInstance.stateNode);
  restoreImpl(internalInstance.stateNode, internalInstance.type, props);
}

function setRestoreImplementation(impl) {
  restoreImpl = impl;
}

function enqueueStateRestore(target) {
  if (restoreTarget) {
    if (restoreQueue) {
      restoreQueue.push(target);
    } else {
      restoreQueue = [target];
    }
  } else {
    restoreTarget = target;
  }
}

function needsStateRestore() {
  return restoreTarget !== null || restoreQueue !== null;
}

function restoreStateIfNeeded() {
  if (!restoreTarget) {
    return;
  }
  var target = restoreTarget;
  var queuedTargets = restoreQueue;
  restoreTarget = null;
  restoreQueue = null;

  restoreStateOfTarget(target);
  if (queuedTargets) {
    for (var i = 0; i < queuedTargets.length; i++) {
      restoreStateOfTarget(queuedTargets[i]);
    }
  }
}

// Used as a way to call batchedUpdates when we don't have a reference to
// the renderer. Such as when we're dispatching events or if third party
// libraries need to call batchedUpdates. Eventually, this API will go away when
// everything is batched by default. We'll then have a similar API to opt-out of
// scheduled work and instead do synchronous work.

// Defaults
var _batchedUpdatesImpl = function (fn, bookkeeping) {
  return fn(bookkeeping);
};
var _interactiveUpdatesImpl = function (fn, a, b) {
  return fn(a, b);
};
var _flushInteractiveUpdatesImpl = function () {};

var isBatching = false;
function batchedUpdates(fn, bookkeeping) {
  if (isBatching) {
    // If we are currently inside another batch, we need to wait until it
    // fully completes before restoring state.
    return fn(bookkeeping);
  }
  isBatching = true;
  try {
    return _batchedUpdatesImpl(fn, bookkeeping);
  } finally {
    // Here we wait until all updates have propagated, which is important
    // when using controlled components within layers:
    // https://github.com/facebook/react/issues/1698
    // Then we restore state of any controlled component.
    isBatching = false;
    var controlledComponentsHavePendingUpdates = needsStateRestore();
    if (controlledComponentsHavePendingUpdates) {
      // If a controlled event was fired, we may need to restore the state of
      // the DOM node back to the controlled value. This is necessary when React
      // bails out of the update without touching the DOM.
      _flushInteractiveUpdatesImpl();
      restoreStateIfNeeded();
    }
  }
}

function interactiveUpdates(fn, a, b) {
  return _interactiveUpdatesImpl(fn, a, b);
}



function setBatchingImplementation(batchedUpdatesImpl, interactiveUpdatesImpl, flushInteractiveUpdatesImpl) {
  _batchedUpdatesImpl = batchedUpdatesImpl;
  _interactiveUpdatesImpl = interactiveUpdatesImpl;
  _flushInteractiveUpdatesImpl = flushInteractiveUpdatesImpl;
}

/**
 * @see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
 */
var supportedInputTypes = {
  color: true,
  date: true,
  datetime: true,
  'datetime-local': true,
  email: true,
  month: true,
  number: true,
  password: true,
  range: true,
  search: true,
  tel: true,
  text: true,
  time: true,
  url: true,
  week: true
};

function isTextInputElement(elem) {
  var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();

  if (nodeName === 'input') {
    return !!supportedInputTypes[elem.type];
  }

  if (nodeName === 'textarea') {
    return true;
  }

  return false;
}

/**
 * HTML nodeType values that represent the type of the node
 */

var ELEMENT_NODE = 1;
var TEXT_NODE = 3;
var COMMENT_NODE = 8;
var DOCUMENT_NODE = 9;
var DOCUMENT_FRAGMENT_NODE = 11;

/**
 * Gets the target node from a native browser event by accounting for
 * inconsistencies in browser DOM APIs.
 *
 * @param {object} nativeEvent Native browser event.
 * @return {DOMEventTarget} Target node.
 */
function getEventTarget(nativeEvent) {
  // Fallback to nativeEvent.srcElement for IE9
  // https://github.com/facebook/react/issues/12506
  var target = nativeEvent.target || nativeEvent.srcElement || window;

  // Normalize SVG <use> element events #4963
  if (target.correspondingUseElement) {
    target = target.correspondingUseElement;
  }

  // Safari may fire events on text nodes (Node.TEXT_NODE is 3).
  // @see http://www.quirksmode.org/js/events_properties.html
  return target.nodeType === TEXT_NODE ? target.parentNode : target;
}

/**
 * Checks if an event is supported in the current execution environment.
 *
 * NOTE: This will not work correctly for non-generic events such as `change`,
 * `reset`, `load`, `error`, and `select`.
 *
 * Borrows from Modernizr.
 *
 * @param {string} eventNameSuffix Event name, e.g. "click".
 * @return {boolean} True if the event is supported.
 * @internal
 * @license Modernizr 3.0.0pre (Custom Build) | MIT
 */
function isEventSupported(eventNameSuffix) {
  if (!canUseDOM) {
    return false;
  }

  var eventName = 'on' + eventNameSuffix;
  var isSupported = eventName in document;

  if (!isSupported) {
    var element = document.createElement('div');
    element.setAttribute(eventName, 'return;');
    isSupported = typeof element[eventName] === 'function';
  }

  return isSupported;
}

function isCheckable(elem) {
  var type = elem.type;
  var nodeName = elem.nodeName;
  return nodeName && nodeName.toLowerCase() === 'input' && (type === 'checkbox' || type === 'radio');
}

function getTracker(node) {
  return node._valueTracker;
}

function detachTracker(node) {
  node._valueTracker = null;
}

function getValueFromNode(node) {
  var value = '';
  if (!node) {
    return value;
  }

  if (isCheckable(node)) {
    value = node.checked ? 'true' : 'false';
  } else {
    value = node.value;
  }

  return value;
}

function trackValueOnNode(node) {
  var valueField = isCheckable(node) ? 'checked' : 'value';
  var descriptor = Object.getOwnPropertyDescriptor(node.constructor.prototype, valueField);

  var currentValue = '' + node[valueField];

  // if someone has already defined a value or Safari, then bail
  // and don't track value will cause over reporting of changes,
  // but it's better then a hard failure
  // (needed for certain tests that spyOn input values and Safari)
  if (node.hasOwnProperty(valueField) || typeof descriptor === 'undefined' || typeof descriptor.get !== 'function' || typeof descriptor.set !== 'function') {
    return;
  }
  var get = descriptor.get,
      set = descriptor.set;

  Object.defineProperty(node, valueField, {
    configurable: true,
    get: function () {
      return get.call(this);
    },
    set: function (value) {
      currentValue = '' + value;
      set.call(this, value);
    }
  });
  // We could've passed this the first time
  // but it triggers a bug in IE11 and Edge 14/15.
  // Calling defineProperty() again should be equivalent.
  // https://github.com/facebook/react/issues/11768
  Object.defineProperty(node, valueField, {
    enumerable: descriptor.enumerable
  });

  var tracker = {
    getValue: function () {
      return currentValue;
    },
    setValue: function (value) {
      currentValue = '' + value;
    },
    stopTracking: function () {
      detachTracker(node);
      delete node[valueField];
    }
  };
  return tracker;
}

function track(node) {
  if (getTracker(node)) {
    return;
  }

  // TODO: Once it's just Fiber we can move this to node._wrapperState
  node._valueTracker = trackValueOnNode(node);
}

function updateValueIfChanged(node) {
  if (!node) {
    return false;
  }

  var tracker = getTracker(node);
  // if there is no tracker at this point it's unlikely
  // that trying again will succeed
  if (!tracker) {
    return true;
  }

  var lastValue = tracker.getValue();
  var nextValue = getValueFromNode(node);
  if (nextValue !== lastValue) {
    tracker.setValue(nextValue);
    return true;
  }
  return false;
}

var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;

// Prevent newer renderers from RTE when used with older react package versions.
// Current owner and dispatcher used to share the same ref,
// but PR #14548 split them out to better support the react-debug-tools package.
if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
  ReactSharedInternals.ReactCurrentDispatcher = {
    current: null
  };
}

var BEFORE_SLASH_RE = /^(.*)[\\\/]/;

var describeComponentFrame = function (name, source, ownerName) {
  var sourceInfo = '';
  if (source) {
    var path = source.fileName;
    var fileName = path.replace(BEFORE_SLASH_RE, '');
    {
      // In DEV, include code for a common special case:
      // prefer "folder/index.js" instead of just "index.js".
      if (/^index\./.test(fileName)) {
        var match = path.match(BEFORE_SLASH_RE);
        if (match) {
          var pathBeforeSlash = match[1];
          if (pathBeforeSlash) {
            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
            fileName = folderName + '/' + fileName;
          }
        }
      }
    }
    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
  } else if (ownerName) {
    sourceInfo = ' (created by ' + ownerName + ')';
  }
  return '\n    in ' + (name || 'Unknown') + sourceInfo;
};

// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
// nor polyfill, then a plain number is used for performance.
var hasSymbol = typeof Symbol === 'function' && Symbol.for;

var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace;

var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;

var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
var FAUX_ITERATOR_SYMBOL = '@@iterator';

function getIteratorFn(maybeIterable) {
  if (maybeIterable === null || typeof maybeIterable !== 'object') {
    return null;
  }
  var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
  if (typeof maybeIterator === 'function') {
    return maybeIterator;
  }
  return null;
}

var Pending = 0;
var Resolved = 1;
var Rejected = 2;

function refineResolvedLazyComponent(lazyComponent) {
  return lazyComponent._status === Resolved ? lazyComponent._result : null;
}

function getWrappedName(outerType, innerType, wrapperName) {
  var functionName = innerType.displayName || innerType.name || '';
  return outerType.displayName || (functionName !== '' ? wrapperName + '(' + functionName + ')' : wrapperName);
}

function getComponentName(type) {
  if (type == null) {
    // Host root, text node or just invalid type.
    return null;
  }
  {
    if (typeof type.tag === 'number') {
      warningWithoutStack$1(false, 'Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
    }
  }
  if (typeof type === 'function') {
    return type.displayName || type.name || null;
  }
  if (typeof type === 'string') {
    return type;
  }
  switch (type) {
    case REACT_CONCURRENT_MODE_TYPE:
      return 'ConcurrentMode';
    case REACT_FRAGMENT_TYPE:
      return 'Fragment';
    case REACT_PORTAL_TYPE:
      return 'Portal';
    case REACT_PROFILER_TYPE:
      return 'Profiler';
    case REACT_STRICT_MODE_TYPE:
      return 'StrictMode';
    case REACT_SUSPENSE_TYPE:
      return 'Suspense';
  }
  if (typeof type === 'object') {
    switch (type.$$typeof) {
      case REACT_CONTEXT_TYPE:
        return 'Context.Consumer';
      case REACT_PROVIDER_TYPE:
        return 'Context.Provider';
      case REACT_FORWARD_REF_TYPE:
        return getWrappedName(type, type.render, 'ForwardRef');
      case REACT_MEMO_TYPE:
        return getComponentName(type.type);
      case REACT_LAZY_TYPE:
        {
          var thenable = type;
          var resolvedThenable = refineResolvedLazyComponent(thenable);
          if (resolvedThenable) {
            return getComponentName(resolvedThenable);
          }
        }
    }
  }
  return null;
}

var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;

function describeFiber(fiber) {
  switch (fiber.tag) {
    case HostRoot:
    case HostPortal:
    case HostText:
    case Fragment:
    case ContextProvider:
    case ContextConsumer:
      return '';
    default:
      var owner = fiber._debugOwner;
      var source = fiber._debugSource;
      var name = getComponentName(fiber.type);
      var ownerName = null;
      if (owner) {
        ownerName = getComponentName(owner.type);
      }
      return describeComponentFrame(name, source, ownerName);
  }
}

function getStackByFiberInDevAndProd(workInProgress) {
  var info = '';
  var node = workInProgress;
  do {
    info += describeFiber(node);
    node = node.return;
  } while (node);
  return info;
}

var current = null;
var phase = null;

function getCurrentFiberOwnerNameInDevOrNull() {
  {
    if (current === null) {
      return null;
    }
    var owner = current._debugOwner;
    if (owner !== null && typeof owner !== 'undefined') {
      return getComponentName(owner.type);
    }
  }
  return null;
}

function getCurrentFiberStackInDev() {
  {
    if (current === null) {
      return '';
    }
    // Safe because if current fiber exists, we are reconciling,
    // and it is guaranteed to be the work-in-progress version.
    return getStackByFiberInDevAndProd(current);
  }
  return '';
}

function resetCurrentFiber() {
  {
    ReactDebugCurrentFrame.getCurrentStack = null;
    current = null;
    phase = null;
  }
}

function setCurrentFiber(fiber) {
  {
    ReactDebugCurrentFrame.getCurrentStack = getCurrentFiberStackInDev;
    current = fiber;
    phase = null;
  }
}

function setCurrentPhase(lifeCyclePhase) {
  {
    phase = lifeCyclePhase;
  }
}

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warning = warningWithoutStack$1;

{
  warning = function (condition, format) {
    if (condition) {
      return;
    }
    var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
    var stack = ReactDebugCurrentFrame.getStackAddendum();
    // eslint-disable-next-line react-internal/warning-and-invariant-args

    for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
      args[_key - 2] = arguments[_key];
    }

    warningWithoutStack$1.apply(undefined, [false, format + '%s'].concat(args, [stack]));
  };
}

var warning$1 = warning;

// A reserved attribute.
// It is handled by React separately and shouldn't be written to the DOM.
var RESERVED = 0;

// A simple string attribute.
// Attributes that aren't in the whitelist are presumed to have this type.
var STRING = 1;

// A string attribute that accepts booleans in React. In HTML, these are called
// "enumerated" attributes with "true" and "false" as possible values.
// When true, it should be set to a "true" string.
// When false, it should be set to a "false" string.
var BOOLEANISH_STRING = 2;

// A real boolean attribute.
// When true, it should be present (set either to an empty string or its name).
// When false, it should be omitted.
var BOOLEAN = 3;

// An attribute that can be used as a flag as well as with a value.
// When true, it should be present (set either to an empty string or its name).
// When false, it should be omitted.
// For any other value, should be present with that value.
var OVERLOADED_BOOLEAN = 4;

// An attribute that must be numeric or parse as a numeric.
// When falsy, it should be removed.
var NUMERIC = 5;

// An attribute that must be positive numeric or parse as a positive numeric.
// When falsy, it should be removed.
var POSITIVE_NUMERIC = 6;

/* eslint-disable max-len */
var ATTRIBUTE_NAME_START_CHAR = ':A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD';
/* eslint-enable max-len */
var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + '\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040';


var ROOT_ATTRIBUTE_NAME = 'data-reactroot';
var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$');

var hasOwnProperty = Object.prototype.hasOwnProperty;
var illegalAttributeNameCache = {};
var validatedAttributeNameCache = {};

function isAttributeNameSafe(attributeName) {
  if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) {
    return true;
  }
  if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) {
    return false;
  }
  if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) {
    validatedAttributeNameCache[attributeName] = true;
    return true;
  }
  illegalAttributeNameCache[attributeName] = true;
  {
    warning$1(false, 'Invalid attribute name: `%s`', attributeName);
  }
  return false;
}

function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) {
  if (propertyInfo !== null) {
    return propertyInfo.type === RESERVED;
  }
  if (isCustomComponentTag) {
    return false;
  }
  if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) {
    return true;
  }
  return false;
}

function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) {
  if (propertyInfo !== null && propertyInfo.type === RESERVED) {
    return false;
  }
  switch (typeof value) {
    case 'function':
    // $FlowIssue symbol is perfectly valid here
    case 'symbol':
      // eslint-disable-line
      return true;
    case 'boolean':
      {
        if (isCustomComponentTag) {
          return false;
        }
        if (propertyInfo !== null) {
          return !propertyInfo.acceptsBooleans;
        } else {
          var prefix = name.toLowerCase().slice(0, 5);
          return prefix !== 'data-' && prefix !== 'aria-';
        }
      }
    default:
      return false;
  }
}

function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) {
  if (value === null || typeof value === 'undefined') {
    return true;
  }
  if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) {
    return true;
  }
  if (isCustomComponentTag) {
    return false;
  }
  if (propertyInfo !== null) {
    switch (propertyInfo.type) {
      case BOOLEAN:
        return !value;
      case OVERLOADED_BOOLEAN:
        return value === false;
      case NUMERIC:
        return isNaN(value);
      case POSITIVE_NUMERIC:
        return isNaN(value) || value < 1;
    }
  }
  return false;
}

function getPropertyInfo(name) {
  return properties.hasOwnProperty(name) ? properties[name] : null;
}

function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace) {
  this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN;
  this.attributeName = attributeName;
  this.attributeNamespace = attributeNamespace;
  this.mustUseProperty = mustUseProperty;
  this.propertyName = name;
  this.type = type;
}

// When adding attributes to this list, be sure to also add them to
// the `possibleStandardNames` module to ensure casing and incorrect
// name warnings.
var properties = {};

// These props are reserved by React. They shouldn't be written to the DOM.
['children', 'dangerouslySetInnerHTML',
// TODO: This prevents the assignment of defaultValue to regular
// elements (not just inputs). Now that ReactDOMInput assigns to the
// defaultValue property -- do we need this?
'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty
  name, // attributeName
  null);
} // attributeNamespace
);

// A few React string attributes have a different name.
// This is a mapping from React prop names to the attribute names.
[['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) {
  var name = _ref[0],
      attributeName = _ref[1];

  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
  attributeName, // attributeName
  null);
} // attributeNamespace
);

// These are "enumerated" HTML attributes that accept "true" and "false".
// In React, we let users pass `true` and `false` even though technically
// these aren't boolean attributes (they are coerced to strings).
['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
  name.toLowerCase(), // attributeName
  null);
} // attributeNamespace
);

// These are "enumerated" SVG attributes that accept "true" and "false".
// In React, we let users pass `true` and `false` even though technically
// these aren't boolean attributes (they are coerced to strings).
// Since these are SVG attributes, their attribute names are case-sensitive.
['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
  name, // attributeName
  null);
} // attributeNamespace
);

// These are HTML boolean attributes.
['allowFullScreen', 'async',
// Note: there is a special case that prevents it from being written to the DOM
// on the client side because the browsers are inconsistent. Instead we call focus().
'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless',
// Microdata
'itemScope'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty
  name.toLowerCase(), // attributeName
  null);
} // attributeNamespace
);

// These are the few React props that we set as DOM properties
// rather than attributes. These are all booleans.
['checked',
// Note: `option.selected` is not updated if `select.multiple` is
// disabled with `removeAttribute`. We have special logic for handling this.
'multiple', 'muted', 'selected'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty
  name, // attributeName
  null);
} // attributeNamespace
);

// These are HTML attributes that are "overloaded booleans": they behave like
// booleans, but can also accept a string value.
['capture', 'download'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty
  name, // attributeName
  null);
} // attributeNamespace
);

// These are HTML attributes that must be positive numbers.
['cols', 'rows', 'size', 'span'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty
  name, // attributeName
  null);
} // attributeNamespace
);

// These are HTML attributes that must be numbers.
['rowSpan', 'start'].forEach(function (name) {
  properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty
  name.toLowerCase(), // attributeName
  null);
} // attributeNamespace
);

var CAMELIZE = /[\-\:]([a-z])/g;
var capitalize = function (token) {
  return token[1].toUpperCase();
};

// This is a list of all SVG attributes that need special casing, namespacing,
// or boolean value assignment. Regular attributes that just accept strings
// and have the same names are omitted, just like in the HTML whitelist.
// Some of these attributes can be hard to find. This list was created by
// scrapping the MDN documentation.
['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height'].forEach(function (attributeName) {
  var name = attributeName.replace(CAMELIZE, capitalize);
  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
  attributeName, null);
} // attributeNamespace
);

// String SVG attributes with the xlink namespace.
['xlink:actuate', 'xlink:arcrole', 'xlink:href', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type'].forEach(function (attributeName) {
  var name = attributeName.replace(CAMELIZE, capitalize);
  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
  attributeName, 'http://www.w3.org/1999/xlink');
});

// String SVG attributes with the xml namespace.
['xml:base', 'xml:lang', 'xml:space'].forEach(function (attributeName) {
  var name = attributeName.replace(CAMELIZE, capitalize);
  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
  attributeName, 'http://www.w3.org/XML/1998/namespace');
});

// These attribute exists both in HTML and SVG.
// The attribute name is case-sensitive in SVG so we can't just use
// the React name like we do for attributes that exist only in HTML.
['tabIndex', 'crossOrigin'].forEach(function (attributeName) {
  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
  attributeName.toLowerCase(), // attributeName
  null);
} // attributeNamespace
);

/**
 * Get the value for a property on a node. Only used in DEV for SSR validation.
 * The "expected" argument is used as a hint of what the expected value is.
 * Some properties have multiple equivalent values.
 */
function getValueForProperty(node, name, expected, propertyInfo) {
  {
    if (propertyInfo.mustUseProperty) {
      var propertyName = propertyInfo.propertyName;

      return node[propertyName];
    } else {
      var attributeName = propertyInfo.attributeName;

      var stringValue = null;

      if (propertyInfo.type === OVERLOADED_BOOLEAN) {
        if (node.hasAttribute(attributeName)) {
          var value = node.getAttribute(attributeName);
          if (value === '') {
            return true;
          }
          if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
            return value;
          }
          if (value === '' + expected) {
            return expected;
          }
          return value;
        }
      } else if (node.hasAttribute(attributeName)) {
        if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
          // We had an attribute but shouldn't have had one, so read it
          // for the error message.
          return node.getAttribute(attributeName);
        }
        if (propertyInfo.type === BOOLEAN) {
          // If this was a boolean, it doesn't matter what the value is
          // the fact that we have it is the same as the expected.
          return expected;
        }
        // Even if this property uses a namespace we use getAttribute
        // because we assume its namespaced name is the same as our config.
        // To use getAttributeNS we need the local name which we don't have
        // in our config atm.
        stringValue = node.getAttribute(attributeName);
      }

      if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
        return stringValue === null ? expected : stringValue;
      } else if (stringValue === '' + expected) {
        return expected;
      } else {
        return stringValue;
      }
    }
  }
}

/**
 * Get the value for a attribute on a node. Only used in DEV for SSR validation.
 * The third argument is used as a hint of what the expected value is. Some
 * attributes have multiple equivalent values.
 */
function getValueForAttribute(node, name, expected) {
  {
    if (!isAttributeNameSafe(name)) {
      return;
    }
    if (!node.hasAttribute(name)) {
      return expected === undefined ? undefined : null;
    }
    var value = node.getAttribute(name);
    if (value === '' + expected) {
      return expected;
    }
    return value;
  }
}

/**
 * Sets the value for a property on a node.
 *
 * @param {DOMElement} node
 * @param {string} name
 * @param {*} value
 */
function setValueForProperty(node, name, value, isCustomComponentTag) {
  var propertyInfo = getPropertyInfo(name);
  if (shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag)) {
    return;
  }
  if (shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag)) {
    value = null;
  }
  // If the prop isn't in the special list, treat it as a simple attribute.
  if (isCustomComponentTag || propertyInfo === null) {
    if (isAttributeNameSafe(name)) {
      var _attributeName = name;
      if (value === null) {
        node.removeAttribute(_attributeName);
      } else {
        node.setAttribute(_attributeName, '' + value);
      }
    }
    return;
  }
  var mustUseProperty = propertyInfo.mustUseProperty;

  if (mustUseProperty) {
    var propertyName = propertyInfo.propertyName;

    if (value === null) {
      var type = propertyInfo.type;

      node[propertyName] = type === BOOLEAN ? false : '';
    } else {
      // Contrary to `setAttribute`, object properties are properly
      // `toString`ed by IE8/9.
      node[propertyName] = value;
    }
    return;
  }
  // The rest are treated as attributes with special cases.
  var attributeName = propertyInfo.attributeName,
      attributeNamespace = propertyInfo.attributeNamespace;

  if (value === null) {
    node.removeAttribute(attributeName);
  } else {
    var _type = propertyInfo.type;

    var attributeValue = void 0;
    if (_type === BOOLEAN || _type === OVERLOADED_BOOLEAN && value === true) {
      attributeValue = '';
    } else {
      // `setAttribute` with objects becomes only `[object]` in IE8/9,
      // ('' + value) makes it output the correct toString()-value.
      attributeValue = '' + value;
    }
    if (attributeNamespace) {
      node.setAttributeNS(attributeNamespace, attributeName, attributeValue);
    } else {
      node.setAttribute(attributeName, attributeValue);
    }
  }
}

// Flow does not allow string concatenation of most non-string types. To work
// around this limitation, we use an opaque type that can only be obtained by
// passing the value through getToStringValue first.
function toString(value) {
  return '' + value;
}

function getToStringValue(value) {
  switch (typeof value) {
    case 'boolean':
    case 'number':
    case 'object':
    case 'string':
    case 'undefined':
      return value;
    default:
      // function, symbol are assigned as empty strings
      return '';
  }
}

var ReactDebugCurrentFrame$1 = null;

var ReactControlledValuePropTypes = {
  checkPropTypes: null
};

{
  ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;

  var hasReadOnlyValue = {
    button: true,
    checkbox: true,
    image: true,
    hidden: true,
    radio: true,
    reset: true,
    submit: true
  };

  var propTypes = {
    value: function (props, propName, componentName) {
      if (hasReadOnlyValue[props.type] || props.onChange || props.readOnly || props.disabled || props[propName] == null) {
        return null;
      }
      return new Error('You provided a `value` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultValue`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
    },
    checked: function (props, propName, componentName) {
      if (props.onChange || props.readOnly || props.disabled || props[propName] == null) {
        return null;
      }
      return new Error('You provided a `checked` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultChecked`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
    }
  };

  /**
   * Provide a linked `value` attribute for controlled forms. You should not use
   * this outside of the ReactDOM controlled form components.
   */
  ReactControlledValuePropTypes.checkPropTypes = function (tagName, props) {
    checkPropTypes(propTypes, props, 'prop', tagName, ReactDebugCurrentFrame$1.getStackAddendum);
  };
}

var enableUserTimingAPI = true;

// Helps identify side effects in begin-phase lifecycle hooks and setState reducers:
var debugRenderPhaseSideEffects = false;

// In some cases, StrictMode should also double-render lifecycles.
// This can be confusing for tests though,
// And it can be bad for performance in production.
// This feature flag can be used to control the behavior:
var debugRenderPhaseSideEffectsForStrictMode = true;

// To preserve the "Pause on caught exceptions" behavior of the debugger, we
// replay the begin phase of a failed component inside invokeGuardedCallback.
var replayFailedUnitOfWorkWithInvokeGuardedCallback = true;

// Warn about deprecated, async-unsafe lifecycles; relates to RFC #6:
var warnAboutDeprecatedLifecycles = false;

// Gather advanced timing metrics for Profiler subtrees.
var enableProfilerTimer = true;

// Trace which interactions trigger each commit.
var enableSchedulerTracing = true;

// Only used in www builds.
var enableSuspenseServerRenderer = false; // TODO: true? Here it might just be false.

// Only used in www builds.


// Only used in www builds.


// React Fire: prevent the value and checked attributes from syncing
// with their related DOM properties
var disableInputAttributeSyncing = false;

// These APIs will no longer be "unstable" in the upcoming 16.7 release,
// Control this behavior with a flag to support 16.6 minor releases in the meanwhile.
var enableStableConcurrentModeAPIs = false;

var warnAboutShorthandPropertyCollision = false;

// TODO: direct imports like some-package/src/* are bad. Fix me.
var didWarnValueDefaultValue = false;
var didWarnCheckedDefaultChecked = false;
var didWarnControlledToUncontrolled = false;
var didWarnUncontrolledToControlled = false;

function isControlled(props) {
  var usesChecked = props.type === 'checkbox' || props.type === 'radio';
  return usesChecked ? props.checked != null : props.value != null;
}

/**
 * Implements an <input> host component that allows setting these optional
 * props: `checked`, `value`, `defaultChecked`, and `defaultValue`.
 *
 * If `checked` or `value` are not supplied (or null/undefined), user actions
 * that affect the checked state or value will trigger updates to the element.
 *
 * If they are supplied (and not null/undefined), the rendered element will not
 * trigger updates to the element. Instead, the props must change in order for
 * the rendered element to be updated.
 *
 * The rendered element will be initialized as unchecked (or `defaultChecked`)
 * with an empty value (or `defaultValue`).
 *
 * See http://www.w3.org/TR/2012/WD-html5-20121025/the-input-element.html
 */

function getHostProps(element, props) {
  var node = element;
  var checked = props.checked;

  var hostProps = _assign({}, props, {
    defaultChecked: undefined,
    defaultValue: undefined,
    value: undefined,
    checked: checked != null ? checked : node._wrapperState.initialChecked
  });

  return hostProps;
}

function initWrapperState(element, props) {
  {
    ReactControlledValuePropTypes.checkPropTypes('input', props);

    if (props.checked !== undefined && props.defaultChecked !== undefined && !didWarnCheckedDefaultChecked) {
      warning$1(false, '%s contains an input of type %s with both checked and defaultChecked props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the checked prop, or the defaultChecked prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component', props.type);
      didWarnCheckedDefaultChecked = true;
    }
    if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValueDefaultValue) {
      warning$1(false, '%s contains an input of type %s with both value and defaultValue props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component', props.type);
      didWarnValueDefaultValue = true;
    }
  }

  var node = element;
  var defaultValue = props.defaultValue == null ? '' : props.defaultValue;

  node._wrapperState = {
    initialChecked: props.checked != null ? props.checked : props.defaultChecked,
    initialValue: getToStringValue(props.value != null ? props.value : defaultValue),
    controlled: isControlled(props)
  };
}

function updateChecked(element, props) {
  var node = element;
  var checked = props.checked;
  if (checked != null) {
    setValueForProperty(node, 'checked', checked, false);
  }
}

function updateWrapper(element, props) {
  var node = element;
  {
    var _controlled = isControlled(props);

    if (!node._wrapperState.controlled && _controlled && !didWarnUncontrolledToControlled) {
      warning$1(false, 'A component is changing an uncontrolled input of type %s to be controlled. ' + 'Input elements should not switch from uncontrolled to controlled (or vice versa). ' + 'Decide between using a controlled or uncontrolled input ' + 'element for the lifetime of the component. More info: https://fb.me/react-controlled-components', props.type);
      didWarnUncontrolledToControlled = true;
    }
    if (node._wrapperState.controlled && !_controlled && !didWarnControlledToUncontrolled) {
      warning$1(false, 'A component is changing a controlled input of type %s to be uncontrolled. ' + 'Input elements should not switch from controlled to uncontrolled (or vice versa). ' + 'Decide between using a controlled or uncontrolled input ' + 'element for the lifetime of the component. More info: https://fb.me/react-controlled-components', props.type);
      didWarnControlledToUncontrolled = true;
    }
  }

  updateChecked(element, props);

  var value = getToStringValue(props.value);
  var type = props.type;

  if (value != null) {
    if (type === 'number') {
      if (value === 0 && node.value === '' ||
      // We explicitly want to coerce to number here if possible.
      // eslint-disable-next-line
      node.value != value) {
        node.value = toString(value);
      }
    } else if (node.value !== toString(value)) {
      node.value = toString(value);
    }
  } else if (type === 'submit' || type === 'reset') {
    // Submit/reset inputs need the attribute removed completely to avoid
    // blank-text buttons.
    node.removeAttribute('value');
    return;
  }

  if (disableInputAttributeSyncing) {
    // When not syncing the value attribute, React only assigns a new value
    // whenever the defaultValue React prop has changed. When not present,
    // React does nothing
    if (props.hasOwnProperty('defaultValue')) {
      setDefaultValue(node, props.type, getToStringValue(props.defaultValue));
    }
  } else {
    // When syncing the value attribute, the value comes from a cascade of
    // properties:
    //  1. The value React property
    //  2. The defaultValue React property
    //  3. Otherwise there should be no change
    if (props.hasOwnProperty('value')) {
      setDefaultValue(node, props.type, value);
    } else if (props.hasOwnProperty('defaultValue')) {
      setDefaultValue(node, props.type, getToStringValue(props.defaultValue));
    }
  }

  if (disableInputAttributeSyncing) {
    // When not syncing the checked attribute, the attribute is directly
    // controllable from the defaultValue React property. It needs to be
    // updated as new props come in.
    if (props.defaultChecked == null) {
      node.removeAttribute('checked');
    } else {
      node.defaultChecked = !!props.defaultChecked;
    }
  } else {
    // When syncing the checked attribute, it only changes when it needs
    // to be removed, such as transitioning from a checkbox into a text input
    if (props.checked == null && props.defaultChecked != null) {
      node.defaultChecked = !!props.defaultChecked;
    }
  }
}

function postMountWrapper(element, props, isHydrating) {
  var node = element;

  // Do not assign value if it is already set. This prevents user text input
  // from being lost during SSR hydration.
  if (props.hasOwnProperty('value') || props.hasOwnProperty('defaultValue')) {
    var type = props.type;
    var isButton = type === 'submit' || type === 'reset';

    // Avoid setting value attribute on submit/reset inputs as it overrides the
    // default value provided by the browser. See: #12872
    if (isButton && (props.value === undefined || props.value === null)) {
      return;
    }

    var _initialValue = toString(node._wrapperState.initialValue);

    // Do not assign value if it is already set. This prevents user text input
    // from being lost during SSR hydration.
    if (!isHydrating) {
      if (disableInputAttributeSyncing) {
        var value = getToStringValue(props.value);

        // When not syncing the value attribute, the value property points
        // directly to the React prop. Only assign it if it exists.
        if (value != null) {
          // Always assign on buttons so that it is possible to assign an
          // empty string to clear button text.
          //
          // Otherwise, do not re-assign the value property if is empty. This
          // potentially avoids a DOM write and prevents Firefox (~60.0.1) from
          // prematurely marking required inputs as invalid. Equality is compared
          // to the current value in case the browser provided value is not an
          // empty string.
          if (isButton || value !== node.value) {
            node.value = toString(value);
          }
        }
      } else {
        // When syncing the value attribute, the value property should use
        // the wrapperState._initialValue property. This uses:
        //
        //   1. The value React property when present
        //   2. The defaultValue React property when present
        //   3. An empty string
        if (_initialValue !== node.value) {
          node.value = _initialValue;
        }
      }
    }

    if (disableInputAttributeSyncing) {
      // When not syncing the value attribute, assign the value attribute
      // directly from the defaultValue React property (when present)
      var defaultValue = getToStringValue(props.defaultValue);
      if (defaultValue != null) {
        node.defaultValue = toString(defaultValue);
      }
    } else {
      // Otherwise, the value attribute is synchronized to the property,
      // so we assign defaultValue to the same thing as the value property
      // assignment step above.
      node.defaultValue = _initialValue;
    }
  }

  // Normally, we'd just do `node.checked = node.checked` upon initial mount, less this bug
  // this is needed to work around a chrome bug where setting defaultChecked
  // will sometimes influence the value of checked (even after detachment).
  // Reference: https://bugs.chromium.org/p/chromium/issues/detail?id=608416
  // We need to temporarily unset name to avoid disrupting radio button groups.
  var name = node.name;
  if (name !== '') {
    node.name = '';
  }

  if (disableInputAttributeSyncing) {
    // When not syncing the checked attribute, the checked property
    // never gets assigned. It must be manually set. We don't want
    // to do this when hydrating so that existing user input isn't
    // modified
    if (!isHydrating) {
      updateChecked(element, props);
    }

    // Only assign the checked attribute if it is defined. This saves
    // a DOM write when controlling the checked attribute isn't needed
    // (text inputs, submit/reset)
    if (props.hasOwnProperty('defaultChecked')) {
      node.defaultChecked = !node.defaultChecked;
      node.defaultChecked = !!props.defaultChecked;
    }
  } else {
    // When syncing the checked attribute, both the checked property and
    // attribute are assigned at the same time using defaultChecked. This uses:
    //
    //   1. The checked React property when present
    //   2. The defaultChecked React property when present
    //   3. Otherwise, false
    node.defaultChecked = !node.defaultChecked;
    node.defaultChecked = !!node._wrapperState.initialChecked;
  }

  if (name !== '') {
    node.name = name;
  }
}

function restoreControlledState(element, props) {
  var node = element;
  updateWrapper(node, props);
  updateNamedCousins(node, props);
}

function updateNamedCousins(rootNode, props) {
  var name = props.name;
  if (props.type === 'radio' && name != null) {
    var queryRoot = rootNode;

    while (queryRoot.parentNode) {
      queryRoot = queryRoot.parentNode;
    }

    // If `rootNode.form` was non-null, then we could try `form.elements`,
    // but that sometimes behaves strangely in IE8. We could also try using
    // `form.getElementsByName`, but that will only return direct children
    // and won't include inputs that use the HTML5 `form=` attribute. Since
    // the input might not even be in a form. It might not even be in the
    // document. Let's just use the local `querySelectorAll` to ensure we don't
    // miss anything.
    var group = queryRoot.querySelectorAll('input[name=' + JSON.stringify('' + name) + '][type="radio"]');

    for (var i = 0; i < group.length; i++) {
      var otherNode = group[i];
      if (otherNode === rootNode || otherNode.form !== rootNode.form) {
        continue;
      }
      // This will throw if radio buttons rendered by different copies of React
      // and the same name are rendered into the same form (same as #1939).
      // That's probably okay; we don't support it just as we don't support
      // mixing React radio buttons with non-React ones.
      var otherProps = getFiberCurrentPropsFromNode$1(otherNode);
      !otherProps ? invariant(false, 'ReactDOMInput: Mixing React and non-React radio inputs with the same `name` is not supported.') : void 0;

      // We need update the tracked value on the named cousin since the value
      // was changed but the input saw no event or value set
      updateValueIfChanged(otherNode);

      // If this is a controlled radio button group, forcing the input that
      // was previously checked to update will cause it to be come re-checked
      // as appropriate.
      updateWrapper(otherNode, otherProps);
    }
  }
}

// In Chrome, assigning defaultValue to certain input types triggers input validation.
// For number inputs, the display value loses trailing decimal points. For email inputs,
// Chrome raises "The specified value <x> is not a valid email address".
//
// Here we check to see if the defaultValue has actually changed, avoiding these problems
// when the user is inputting text
//
// https://github.com/facebook/react/issues/7253
function setDefaultValue(node, type, value) {
  if (
  // Focused number inputs synchronize on blur. See ChangeEventPlugin.js
  type !== 'number' || node.ownerDocument.activeElement !== node) {
    if (value == null) {
      node.defaultValue = toString(node._wrapperState.initialValue);
    } else if (node.defaultValue !== toString(value)) {
      node.defaultValue = toString(value);
    }
  }
}

var eventTypes$1 = {
  change: {
    phasedRegistrationNames: {
      bubbled: 'onChange',
      captured: 'onChangeCapture'
    },
    dependencies: [TOP_BLUR, TOP_CHANGE, TOP_CLICK, TOP_FOCUS, TOP_INPUT, TOP_KEY_DOWN, TOP_KEY_UP, TOP_SELECTION_CHANGE]
  }
};

function createAndAccumulateChangeEvent(inst, nativeEvent, target) {
  var event = SyntheticEvent.getPooled(eventTypes$1.change, inst, nativeEvent, target);
  event.type = 'change';
  // Flag this event loop as needing state restore.
  enqueueStateRestore(target);
  accumulateTwoPhaseDispatches(event);
  return event;
}
/**
 * For IE shims
 */
var activeElement = null;
var activeElementInst = null;

/**
 * SECTION: handle `change` event
 */
function shouldUseChangeEvent(elem) {
  var nodeName = elem.nodeName && elem.nodeName.toLowerCase();
  return nodeName === 'select' || nodeName === 'input' && elem.type === 'file';
}

function manualDispatchChangeEvent(nativeEvent) {
  var event = createAndAccumulateChangeEvent(activeElementInst, nativeEvent, getEventTarget(nativeEvent));

  // If change and propertychange bubbled, we'd just bind to it like all the
  // other events and have it go through ReactBrowserEventEmitter. Since it
  // doesn't, we manually listen for the events and so we have to enqueue and
  // process the abstract event manually.
  //
  // Batching is necessary here in order to ensure that all event handlers run
  // before the next rerender (including event handlers attached to ancestor
  // elements instead of directly on the input). Without this, controlled
  // components don't work properly in conjunction with event bubbling because
  // the component is rerendered and the value reverted before all the event
  // handlers can run. See https://github.com/facebook/react/issues/708.
  batchedUpdates(runEventInBatch, event);
}

function runEventInBatch(event) {
  runEventsInBatch(event);
}

function getInstIfValueChanged(targetInst) {
  var targetNode = getNodeFromInstance$1(targetInst);
  if (updateValueIfChanged(targetNode)) {
    return targetInst;
  }
}

function getTargetInstForChangeEvent(topLevelType, targetInst) {
  if (topLevelType === TOP_CHANGE) {
    return targetInst;
  }
}

/**
 * SECTION: handle `input` event
 */
var isInputEventSupported = false;
if (canUseDOM) {
  // IE9 claims to support the input event but fails to trigger it when
  // deleting text, so we ignore its input events.
  isInputEventSupported = isEventSupported('input') && (!document.documentMode || document.documentMode > 9);
}

/**
 * (For IE <=9) Starts tracking propertychange events on the passed-in element
 * and override the value property so that we can distinguish user events from
 * value changes in JS.
 */
function startWatchingForValueChange(target, targetInst) {
  activeElement = target;
  activeElementInst = targetInst;
  activeElement.attachEvent('onpropertychange', handlePropertyChange);
}

/**
 * (For IE <=9) Removes the event listeners from the currently-tracked element,
 * if any exists.
 */
function stopWatchingForValueChange() {
  if (!activeElement) {
    return;
  }
  activeElement.detachEvent('onpropertychange', handlePropertyChange);
  activeElement = null;
  activeElementInst = null;
}

/**
 * (For IE <=9) Handles a propertychange event, sending a `change` event if
 * the value of the active element has changed.
 */
function handlePropertyChange(nativeEvent) {
  if (nativeEvent.propertyName !== 'value') {
    return;
  }
  if (getInstIfValueChanged(activeElementInst)) {
    manualDispatchChangeEvent(nativeEvent);
  }
}

function handleEventsForInputEventPolyfill(topLevelType, target, targetInst) {
  if (topLevelType === TOP_FOCUS) {
    // In IE9, propertychange fires for most input events but is buggy and
    // doesn't fire when text is deleted, but conveniently, selectionchange
    // appears to fire in all of the remaining cases so we catch those and
    // forward the event if the value has changed
    // In either case, we don't want to call the event handler if the value
    // is changed from JS so we redefine a setter for `.value` that updates
    // our activeElementValue variable, allowing us to ignore those changes
    //
    // stopWatching() should be a noop here but we call it just in case we
    // missed a blur event somehow.
    stopWatchingForValueChange();
    startWatchingForValueChange(target, targetInst);
  } else if (topLevelType === TOP_BLUR) {
    stopWatchingForValueChange();
  }
}

// For IE8 and IE9.
function getTargetInstForInputEventPolyfill(topLevelType, targetInst) {
  if (topLevelType === TOP_SELECTION_CHANGE || topLevelType === TOP_KEY_UP || topLevelType === TOP_KEY_DOWN) {
    // On the selectionchange event, the target is just document which isn't
    // helpful for us so just check activeElement instead.
    //
    // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire
    // propertychange on the first input event after setting `value` from a
    // script and fires only keydown, keypress, keyup. Catching keyup usually
    // gets it and catching keydown lets us fire an event for the first
    // keystroke if user does a key repeat (it'll be a little delayed: right
    // before the second keystroke). Other input methods (e.g., paste) seem to
    // fire selectionchange normally.
    return getInstIfValueChanged(activeElementInst);
  }
}

/**
 * SECTION: handle `click` event
 */
function shouldUseClickEvent(elem) {
  // Use the `click` event to detect changes to checkbox and radio inputs.
  // This approach works across all browsers, whereas `change` does not fire
  // until `blur` in IE8.
  var nodeName = elem.nodeName;
  return nodeName && nodeName.toLowerCase() === 'input' && (elem.type === 'checkbox' || elem.type === 'radio');
}

function getTargetInstForClickEvent(topLevelType, targetInst) {
  if (topLevelType === TOP_CLICK) {
    return getInstIfValueChanged(targetInst);
  }
}

function getTargetInstForInputOrChangeEvent(topLevelType, targetInst) {
  if (topLevelType === TOP_INPUT || topLevelType === TOP_CHANGE) {
    return getInstIfValueChanged(targetInst);
  }
}

function handleControlledInputBlur(node) {
  var state = node._wrapperState;

  if (!state || !state.controlled || node.type !== 'number') {
    return;
  }

  if (!disableInputAttributeSyncing) {
    // If controlled, assign the value attribute to the current value on blur
    setDefaultValue(node, 'number', node.value);
  }
}

/**
 * This plugin creates an `onChange` event that normalizes change events
 * across form elements. This event fires at a time when it's possible to
 * change the element's value without seeing a flicker.
 *
 * Supported elements are:
 * - input (see `isTextInputElement`)
 * - textarea
 * - select
 */
var ChangeEventPlugin = {
  eventTypes: eventTypes$1,

  _isInputEventSupported: isInputEventSupported,

  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window;

    var getTargetInstFunc = void 0,
        handleEventFunc = void 0;
    if (shouldUseChangeEvent(targetNode)) {
      getTargetInstFunc = getTargetInstForChangeEvent;
    } else if (isTextInputElement(targetNode)) {
      if (isInputEventSupported) {
        getTargetInstFunc = getTargetInstForInputOrChangeEvent;
      } else {
        getTargetInstFunc = getTargetInstForInputEventPolyfill;
        handleEventFunc = handleEventsForInputEventPolyfill;
      }
    } else if (shouldUseClickEvent(targetNode)) {
      getTargetInstFunc = getTargetInstForClickEvent;
    }

    if (getTargetInstFunc) {
      var inst = getTargetInstFunc(topLevelType, targetInst);
      if (inst) {
        var event = createAndAccumulateChangeEvent(inst, nativeEvent, nativeEventTarget);
        return event;
      }
    }

    if (handleEventFunc) {
      handleEventFunc(topLevelType, targetNode, targetInst);
    }

    // When blurring, set the value attribute for number inputs
    if (topLevelType === TOP_BLUR) {
      handleControlledInputBlur(targetNode);
    }
  }
};

/**
 * Module that is injectable into `EventPluginHub`, that specifies a
 * deterministic ordering of `EventPlugin`s. A convenient way to reason about
 * plugins, without having to package every one of them. This is better than
 * having plugins be ordered in the same order that they are injected because
 * that ordering would be influenced by the packaging order.
 * `ResponderEventPlugin` must occur before `SimpleEventPlugin` so that
 * preventing default on events is convenient in `SimpleEventPlugin` handlers.
 */
var DOMEventPluginOrder = ['ResponderEventPlugin', 'SimpleEventPlugin', 'EnterLeaveEventPlugin', 'ChangeEventPlugin', 'SelectEventPlugin', 'BeforeInputEventPlugin'];

var SyntheticUIEvent = SyntheticEvent.extend({
  view: null,
  detail: null
});

var modifierKeyToProp = {
  Alt: 'altKey',
  Control: 'ctrlKey',
  Meta: 'metaKey',
  Shift: 'shiftKey'
};

// Older browsers (Safari <= 10, iOS Safari <= 10.2) do not support
// getModifierState. If getModifierState is not supported, we map it to a set of
// modifier keys exposed by the event. In this case, Lock-keys are not supported.
/**
 * Translation from modifier key to the associated property in the event.
 * @see http://www.w3.org/TR/DOM-Level-3-Events/#keys-Modifiers
 */

function modifierStateGetter(keyArg) {
  var syntheticEvent = this;
  var nativeEvent = syntheticEvent.nativeEvent;
  if (nativeEvent.getModifierState) {
    return nativeEvent.getModifierState(keyArg);
  }
  var keyProp = modifierKeyToProp[keyArg];
  return keyProp ? !!nativeEvent[keyProp] : false;
}

function getEventModifierState(nativeEvent) {
  return modifierStateGetter;
}

var previousScreenX = 0;
var previousScreenY = 0;
// Use flags to signal movementX/Y has already been set
var isMovementXSet = false;
var isMovementYSet = false;

/**
 * @interface MouseEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var SyntheticMouseEvent = SyntheticUIEvent.extend({
  screenX: null,
  screenY: null,
  clientX: null,
  clientY: null,
  pageX: null,
  pageY: null,
  ctrlKey: null,
  shiftKey: null,
  altKey: null,
  metaKey: null,
  getModifierState: getEventModifierState,
  button: null,
  buttons: null,
  relatedTarget: function (event) {
    return event.relatedTarget || (event.fromElement === event.srcElement ? event.toElement : event.fromElement);
  },
  movementX: function (event) {
    if ('movementX' in event) {
      return event.movementX;
    }

    var screenX = previousScreenX;
    previousScreenX = event.screenX;

    if (!isMovementXSet) {
      isMovementXSet = true;
      return 0;
    }

    return event.type === 'mousemove' ? event.screenX - screenX : 0;
  },
  movementY: function (event) {
    if ('movementY' in event) {
      return event.movementY;
    }

    var screenY = previousScreenY;
    previousScreenY = event.screenY;

    if (!isMovementYSet) {
      isMovementYSet = true;
      return 0;
    }

    return event.type === 'mousemove' ? event.screenY - screenY : 0;
  }
});

/**
 * @interface PointerEvent
 * @see http://www.w3.org/TR/pointerevents/
 */
var SyntheticPointerEvent = SyntheticMouseEvent.extend({
  pointerId: null,
  width: null,
  height: null,
  pressure: null,
  tangentialPressure: null,
  tiltX: null,
  tiltY: null,
  twist: null,
  pointerType: null,
  isPrimary: null
});

var eventTypes$2 = {
  mouseEnter: {
    registrationName: 'onMouseEnter',
    dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER]
  },
  mouseLeave: {
    registrationName: 'onMouseLeave',
    dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER]
  },
  pointerEnter: {
    registrationName: 'onPointerEnter',
    dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER]
  },
  pointerLeave: {
    registrationName: 'onPointerLeave',
    dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER]
  }
};

var EnterLeaveEventPlugin = {
  eventTypes: eventTypes$2,

  /**
   * For almost every interaction we care about, there will be both a top-level
   * `mouseover` and `mouseout` event that occurs. Only use `mouseout` so that
   * we do not extract duplicate events. However, moving the mouse into the
   * browser from outside will not fire a `mouseout` event. In this case, we use
   * the `mouseover` top-level event.
   */
  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var isOverEvent = topLevelType === TOP_MOUSE_OVER || topLevelType === TOP_POINTER_OVER;
    var isOutEvent = topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_POINTER_OUT;

    if (isOverEvent && (nativeEvent.relatedTarget || nativeEvent.fromElement)) {
      return null;
    }

    if (!isOutEvent && !isOverEvent) {
      // Must not be a mouse or pointer in or out - ignoring.
      return null;
    }

    var win = void 0;
    if (nativeEventTarget.window === nativeEventTarget) {
      // `nativeEventTarget` is probably a window object.
      win = nativeEventTarget;
    } else {
      // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8.
      var doc = nativeEventTarget.ownerDocument;
      if (doc) {
        win = doc.defaultView || doc.parentWindow;
      } else {
        win = window;
      }
    }

    var from = void 0;
    var to = void 0;
    if (isOutEvent) {
      from = targetInst;
      var related = nativeEvent.relatedTarget || nativeEvent.toElement;
      to = related ? getClosestInstanceFromNode(related) : null;
    } else {
      // Moving to a node from outside the window.
      from = null;
      to = targetInst;
    }

    if (from === to) {
      // Nothing pertains to our managed components.
      return null;
    }

    var eventInterface = void 0,
        leaveEventType = void 0,
        enterEventType = void 0,
        eventTypePrefix = void 0;

    if (topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_MOUSE_OVER) {
      eventInterface = SyntheticMouseEvent;
      leaveEventType = eventTypes$2.mouseLeave;
      enterEventType = eventTypes$2.mouseEnter;
      eventTypePrefix = 'mouse';
    } else if (topLevelType === TOP_POINTER_OUT || topLevelType === TOP_POINTER_OVER) {
      eventInterface = SyntheticPointerEvent;
      leaveEventType = eventTypes$2.pointerLeave;
      enterEventType = eventTypes$2.pointerEnter;
      eventTypePrefix = 'pointer';
    }

    var fromNode = from == null ? win : getNodeFromInstance$1(from);
    var toNode = to == null ? win : getNodeFromInstance$1(to);

    var leave = eventInterface.getPooled(leaveEventType, from, nativeEvent, nativeEventTarget);
    leave.type = eventTypePrefix + 'leave';
    leave.target = fromNode;
    leave.relatedTarget = toNode;

    var enter = eventInterface.getPooled(enterEventType, to, nativeEvent, nativeEventTarget);
    enter.type = eventTypePrefix + 'enter';
    enter.target = toNode;
    enter.relatedTarget = fromNode;

    accumulateEnterLeaveDispatches(leave, enter, from, to);

    return [leave, enter];
  }
};

/**
 * inlined Object.is polyfill to avoid requiring consumers ship their own
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
 */
function is(x, y) {
  return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
  ;
}

var hasOwnProperty$1 = Object.prototype.hasOwnProperty;

/**
 * Performs equality by iterating through keys on an object and returning false
 * when any key has values which are not strictly equal between the arguments.
 * Returns true when the values of all keys are strictly equal.
 */
function shallowEqual(objA, objB) {
  if (is(objA, objB)) {
    return true;
  }

  if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
    return false;
  }

  var keysA = Object.keys(objA);
  var keysB = Object.keys(objB);

  if (keysA.length !== keysB.length) {
    return false;
  }

  // Test for A's keys different from B.
  for (var i = 0; i < keysA.length; i++) {
    if (!hasOwnProperty$1.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) {
      return false;
    }
  }

  return true;
}

/**
 * `ReactInstanceMap` maintains a mapping from a public facing stateful
 * instance (key) and the internal representation (value). This allows public
 * methods to accept the user facing instance as an argument and map them back
 * to internal methods.
 *
 * Note that this module is currently shared and assumed to be stateless.
 * If this becomes an actual Map, that will break.
 */

/**
 * This API should be called `delete` but we'd have to make sure to always
 * transform these to strings for IE support. When this transform is fully
 * supported we can rename it.
 */


function get(key) {
  return key._reactInternalFiber;
}

function has(key) {
  return key._reactInternalFiber !== undefined;
}

function set(key, value) {
  key._reactInternalFiber = value;
}

// Don't change these two values. They're used by React Dev Tools.
var NoEffect = /*              */0;
var PerformedWork = /*         */1;

// You can change the rest (and add more).
var Placement = /*             */2;
var Update = /*                */4;
var PlacementAndUpdate = /*    */6;
var Deletion = /*              */8;
var ContentReset = /*          */16;
var Callback = /*              */32;
var DidCapture = /*            */64;
var Ref = /*                   */128;
var Snapshot = /*              */256;
var Passive = /*               */512;

// Passive & Update & Callback & Ref & Snapshot
var LifecycleEffectMask = /*   */932;

// Union of all host effects
var HostEffectMask = /*        */1023;

var Incomplete = /*            */1024;
var ShouldCapture = /*         */2048;

var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;

var MOUNTING = 1;
var MOUNTED = 2;
var UNMOUNTED = 3;

function isFiberMountedImpl(fiber) {
  var node = fiber;
  if (!fiber.alternate) {
    // If there is no alternate, this might be a new tree that isn't inserted
    // yet. If it is, then it will have a pending insertion effect on it.
    if ((node.effectTag & Placement) !== NoEffect) {
      return MOUNTING;
    }
    while (node.return) {
      node = node.return;
      if ((node.effectTag & Placement) !== NoEffect) {
        return MOUNTING;
      }
    }
  } else {
    while (node.return) {
      node = node.return;
    }
  }
  if (node.tag === HostRoot) {
    // TODO: Check if this was a nested HostRoot when used with
    // renderContainerIntoSubtree.
    return MOUNTED;
  }
  // If we didn't hit the root, that means that we're in an disconnected tree
  // that has been unmounted.
  return UNMOUNTED;
}

function isFiberMounted(fiber) {
  return isFiberMountedImpl(fiber) === MOUNTED;
}

function isMounted(component) {
  {
    var owner = ReactCurrentOwner$1.current;
    if (owner !== null && owner.tag === ClassComponent) {
      var ownerFiber = owner;
      var instance = ownerFiber.stateNode;
      !instance._warnedAboutRefsInRender ? warningWithoutStack$1(false, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber.type) || 'A component') : void 0;
      instance._warnedAboutRefsInRender = true;
    }
  }

  var fiber = get(component);
  if (!fiber) {
    return false;
  }
  return isFiberMountedImpl(fiber) === MOUNTED;
}

function assertIsMounted(fiber) {
  !(isFiberMountedImpl(fiber) === MOUNTED) ? invariant(false, 'Unable to find node on an unmounted component.') : void 0;
}

function findCurrentFiberUsingSlowPath(fiber) {
  var alternate = fiber.alternate;
  if (!alternate) {
    // If there is no alternate, then we only need to check if it is mounted.
    var state = isFiberMountedImpl(fiber);
    !(state !== UNMOUNTED) ? invariant(false, 'Unable to find node on an unmounted component.') : void 0;
    if (state === MOUNTING) {
      return null;
    }
    return fiber;
  }
  // If we have two possible branches, we'll walk backwards up to the root
  // to see what path the root points to. On the way we may hit one of the
  // special cases and we'll deal with them.
  var a = fiber;
  var b = alternate;
  while (true) {
    var parentA = a.return;
    var parentB = parentA ? parentA.alternate : null;
    if (!parentA || !parentB) {
      // We're at the root.
      break;
    }

    // If both copies of the parent fiber point to the same child, we can
    // assume that the child is current. This happens when we bailout on low
    // priority: the bailed out fiber's child reuses the current child.
    if (parentA.child === parentB.child) {
      var child = parentA.child;
      while (child) {
        if (child === a) {
          // We've determined that A is the current branch.
          assertIsMounted(parentA);
          return fiber;
        }
        if (child === b) {
          // We've determined that B is the current branch.
          assertIsMounted(parentA);
          return alternate;
        }
        child = child.sibling;
      }
      // We should never have an alternate for any mounting node. So the only
      // way this could possibly happen is if this was unmounted, if at all.
      invariant(false, 'Unable to find node on an unmounted component.');
    }

    if (a.return !== b.return) {
      // The return pointer of A and the return pointer of B point to different
      // fibers. We assume that return pointers never criss-cross, so A must
      // belong to the child set of A.return, and B must belong to the child
      // set of B.return.
      a = parentA;
      b = parentB;
    } else {
      // The return pointers point to the same fiber. We'll have to use the
      // default, slow path: scan the child sets of each parent alternate to see
      // which child belongs to which set.
      //
      // Search parent A's child set
      var didFindChild = false;
      var _child = parentA.child;
      while (_child) {
        if (_child === a) {
          didFindChild = true;
          a = parentA;
          b = parentB;
          break;
        }
        if (_child === b) {
          didFindChild = true;
          b = parentA;
          a = parentB;
          break;
        }
        _child = _child.sibling;
      }
      if (!didFindChild) {
        // Search parent B's child set
        _child = parentB.child;
        while (_child) {
          if (_child === a) {
            didFindChild = true;
            a = parentB;
            b = parentA;
            break;
          }
          if (_child === b) {
            didFindChild = true;
            b = parentB;
            a = parentA;
            break;
          }
          _child = _child.sibling;
        }
        !didFindChild ? invariant(false, 'Child was not found in either parent set. This indicates a bug in React related to the return pointer. Please file an issue.') : void 0;
      }
    }

    !(a.alternate === b) ? invariant(false, 'Return fibers should always be each others\' alternates. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  }
  // If the root is not a host container, we're in a disconnected tree. I.e.
  // unmounted.
  !(a.tag === HostRoot) ? invariant(false, 'Unable to find node on an unmounted component.') : void 0;
  if (a.stateNode.current === a) {
    // We've determined that A is the current branch.
    return fiber;
  }
  // Otherwise B has to be current branch.
  return alternate;
}

function findCurrentHostFiber(parent) {
  var currentParent = findCurrentFiberUsingSlowPath(parent);
  if (!currentParent) {
    return null;
  }

  // Next we'll drill down this component to find the first HostComponent/Text.
  var node = currentParent;
  while (true) {
    if (node.tag === HostComponent || node.tag === HostText) {
      return node;
    } else if (node.child) {
      node.child.return = node;
      node = node.child;
      continue;
    }
    if (node === currentParent) {
      return null;
    }
    while (!node.sibling) {
      if (!node.return || node.return === currentParent) {
        return null;
      }
      node = node.return;
    }
    node.sibling.return = node.return;
    node = node.sibling;
  }
  // Flow needs the return null here, but ESLint complains about it.
  // eslint-disable-next-line no-unreachable
  return null;
}

function findCurrentHostFiberWithNoPortals(parent) {
  var currentParent = findCurrentFiberUsingSlowPath(parent);
  if (!currentParent) {
    return null;
  }

  // Next we'll drill down this component to find the first HostComponent/Text.
  var node = currentParent;
  while (true) {
    if (node.tag === HostComponent || node.tag === HostText) {
      return node;
    } else if (node.child && node.tag !== HostPortal) {
      node.child.return = node;
      node = node.child;
      continue;
    }
    if (node === currentParent) {
      return null;
    }
    while (!node.sibling) {
      if (!node.return || node.return === currentParent) {
        return null;
      }
      node = node.return;
    }
    node.sibling.return = node.return;
    node = node.sibling;
  }
  // Flow needs the return null here, but ESLint complains about it.
  // eslint-disable-next-line no-unreachable
  return null;
}

function addEventBubbleListener(element, eventType, listener) {
  element.addEventListener(eventType, listener, false);
}

function addEventCaptureListener(element, eventType, listener) {
  element.addEventListener(eventType, listener, true);
}

/**
 * @interface Event
 * @see http://www.w3.org/TR/css3-animations/#AnimationEvent-interface
 * @see https://developer.mozilla.org/en-US/docs/Web/API/AnimationEvent
 */
var SyntheticAnimationEvent = SyntheticEvent.extend({
  animationName: null,
  elapsedTime: null,
  pseudoElement: null
});

/**
 * @interface Event
 * @see http://www.w3.org/TR/clipboard-apis/
 */
var SyntheticClipboardEvent = SyntheticEvent.extend({
  clipboardData: function (event) {
    return 'clipboardData' in event ? event.clipboardData : window.clipboardData;
  }
});

/**
 * @interface FocusEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var SyntheticFocusEvent = SyntheticUIEvent.extend({
  relatedTarget: null
});

/**
 * `charCode` represents the actual "character code" and is safe to use with
 * `String.fromCharCode`. As such, only keys that correspond to printable
 * characters produce a valid `charCode`, the only exception to this is Enter.
 * The Tab-key is considered non-printable and does not have a `charCode`,
 * presumably because it does not produce a tab-character in browsers.
 *
 * @param {object} nativeEvent Native browser event.
 * @return {number} Normalized `charCode` property.
 */
function getEventCharCode(nativeEvent) {
  var charCode = void 0;
  var keyCode = nativeEvent.keyCode;

  if ('charCode' in nativeEvent) {
    charCode = nativeEvent.charCode;

    // FF does not set `charCode` for the Enter-key, check against `keyCode`.
    if (charCode === 0 && keyCode === 13) {
      charCode = 13;
    }
  } else {
    // IE8 does not implement `charCode`, but `keyCode` has the correct value.
    charCode = keyCode;
  }

  // IE and Edge (on Windows) and Chrome / Safari (on Windows and Linux)
  // report Enter as charCode 10 when ctrl is pressed.
  if (charCode === 10) {
    charCode = 13;
  }

  // Some non-printable keys are reported in `charCode`/`keyCode`, discard them.
  // Must not discard the (non-)printable Enter-key.
  if (charCode >= 32 || charCode === 13) {
    return charCode;
  }

  return 0;
}

/**
 * Normalization of deprecated HTML5 `key` values
 * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
 */
var normalizeKey = {
  Esc: 'Escape',
  Spacebar: ' ',
  Left: 'ArrowLeft',
  Up: 'ArrowUp',
  Right: 'ArrowRight',
  Down: 'ArrowDown',
  Del: 'Delete',
  Win: 'OS',
  Menu: 'ContextMenu',
  Apps: 'ContextMenu',
  Scroll: 'ScrollLock',
  MozPrintableKey: 'Unidentified'
};

/**
 * Translation from legacy `keyCode` to HTML5 `key`
 * Only special keys supported, all others depend on keyboard layout or browser
 * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
 */
var translateToKey = {
  '8': 'Backspace',
  '9': 'Tab',
  '12': 'Clear',
  '13': 'Enter',
  '16': 'Shift',
  '17': 'Control',
  '18': 'Alt',
  '19': 'Pause',
  '20': 'CapsLock',
  '27': 'Escape',
  '32': ' ',
  '33': 'PageUp',
  '34': 'PageDown',
  '35': 'End',
  '36': 'Home',
  '37': 'ArrowLeft',
  '38': 'ArrowUp',
  '39': 'ArrowRight',
  '40': 'ArrowDown',
  '45': 'Insert',
  '46': 'Delete',
  '112': 'F1',
  '113': 'F2',
  '114': 'F3',
  '115': 'F4',
  '116': 'F5',
  '117': 'F6',
  '118': 'F7',
  '119': 'F8',
  '120': 'F9',
  '121': 'F10',
  '122': 'F11',
  '123': 'F12',
  '144': 'NumLock',
  '145': 'ScrollLock',
  '224': 'Meta'
};

/**
 * @param {object} nativeEvent Native browser event.
 * @return {string} Normalized `key` property.
 */
function getEventKey(nativeEvent) {
  if (nativeEvent.key) {
    // Normalize inconsistent values reported by browsers due to
    // implementations of a working draft specification.

    // FireFox implements `key` but returns `MozPrintableKey` for all
    // printable characters (normalized to `Unidentified`), ignore it.
    var key = normalizeKey[nativeEvent.key] || nativeEvent.key;
    if (key !== 'Unidentified') {
      return key;
    }
  }

  // Browser does not implement `key`, polyfill as much of it as we can.
  if (nativeEvent.type === 'keypress') {
    var charCode = getEventCharCode(nativeEvent);

    // The enter-key is technically both printable and non-printable and can
    // thus be captured by `keypress`, no other non-printable key should.
    return charCode === 13 ? 'Enter' : String.fromCharCode(charCode);
  }
  if (nativeEvent.type === 'keydown' || nativeEvent.type === 'keyup') {
    // While user keyboard layout determines the actual meaning of each
    // `keyCode` value, almost all function keys have a universal value.
    return translateToKey[nativeEvent.keyCode] || 'Unidentified';
  }
  return '';
}

/**
 * @interface KeyboardEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var SyntheticKeyboardEvent = SyntheticUIEvent.extend({
  key: getEventKey,
  location: null,
  ctrlKey: null,
  shiftKey: null,
  altKey: null,
  metaKey: null,
  repeat: null,
  locale: null,
  getModifierState: getEventModifierState,
  // Legacy Interface
  charCode: function (event) {
    // `charCode` is the result of a KeyPress event and represents the value of
    // the actual printable character.

    // KeyPress is deprecated, but its replacement is not yet final and not
    // implemented in any major browser. Only KeyPress has charCode.
    if (event.type === 'keypress') {
      return getEventCharCode(event);
    }
    return 0;
  },
  keyCode: function (event) {
    // `keyCode` is the result of a KeyDown/Up event and represents the value of
    // physical keyboard key.

    // The actual meaning of the value depends on the users' keyboard layout
    // which cannot be detected. Assuming that it is a US keyboard layout
    // provides a surprisingly accurate mapping for US and European users.
    // Due to this, it is left to the user to implement at this time.
    if (event.type === 'keydown' || event.type === 'keyup') {
      return event.keyCode;
    }
    return 0;
  },
  which: function (event) {
    // `which` is an alias for either `keyCode` or `charCode` depending on the
    // type of the event.
    if (event.type === 'keypress') {
      return getEventCharCode(event);
    }
    if (event.type === 'keydown' || event.type === 'keyup') {
      return event.keyCode;
    }
    return 0;
  }
});

/**
 * @interface DragEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var SyntheticDragEvent = SyntheticMouseEvent.extend({
  dataTransfer: null
});

/**
 * @interface TouchEvent
 * @see http://www.w3.org/TR/touch-events/
 */
var SyntheticTouchEvent = SyntheticUIEvent.extend({
  touches: null,
  targetTouches: null,
  changedTouches: null,
  altKey: null,
  metaKey: null,
  ctrlKey: null,
  shiftKey: null,
  getModifierState: getEventModifierState
});

/**
 * @interface Event
 * @see http://www.w3.org/TR/2009/WD-css3-transitions-20090320/#transition-events-
 * @see https://developer.mozilla.org/en-US/docs/Web/API/TransitionEvent
 */
var SyntheticTransitionEvent = SyntheticEvent.extend({
  propertyName: null,
  elapsedTime: null,
  pseudoElement: null
});

/**
 * @interface WheelEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var SyntheticWheelEvent = SyntheticMouseEvent.extend({
  deltaX: function (event) {
    return 'deltaX' in event ? event.deltaX : // Fallback to `wheelDeltaX` for Webkit and normalize (right is positive).
    'wheelDeltaX' in event ? -event.wheelDeltaX : 0;
  },
  deltaY: function (event) {
    return 'deltaY' in event ? event.deltaY : // Fallback to `wheelDeltaY` for Webkit and normalize (down is positive).
    'wheelDeltaY' in event ? -event.wheelDeltaY : // Fallback to `wheelDelta` for IE<9 and normalize (down is positive).
    'wheelDelta' in event ? -event.wheelDelta : 0;
  },

  deltaZ: null,

  // Browsers without "deltaMode" is reporting in raw wheel delta where one
  // notch on the scroll is always +/- 120, roughly equivalent to pixels.
  // A good approximation of DOM_DELTA_LINE (1) is 5% of viewport size or
  // ~40 pixels, for DOM_DELTA_SCREEN (2) it is 87.5% of viewport size.
  deltaMode: null
});

/**
 * Turns
 * ['abort', ...]
 * into
 * eventTypes = {
 *   'abort': {
 *     phasedRegistrationNames: {
 *       bubbled: 'onAbort',
 *       captured: 'onAbortCapture',
 *     },
 *     dependencies: [TOP_ABORT],
 *   },
 *   ...
 * };
 * topLevelEventsToDispatchConfig = new Map([
 *   [TOP_ABORT, { sameConfig }],
 * ]);
 */

var interactiveEventTypeNames = [[TOP_BLUR, 'blur'], [TOP_CANCEL, 'cancel'], [TOP_CLICK, 'click'], [TOP_CLOSE, 'close'], [TOP_CONTEXT_MENU, 'contextMenu'], [TOP_COPY, 'copy'], [TOP_CUT, 'cut'], [TOP_AUX_CLICK, 'auxClick'], [TOP_DOUBLE_CLICK, 'doubleClick'], [TOP_DRAG_END, 'dragEnd'], [TOP_DRAG_START, 'dragStart'], [TOP_DROP, 'drop'], [TOP_FOCUS, 'focus'], [TOP_INPUT, 'input'], [TOP_INVALID, 'invalid'], [TOP_KEY_DOWN, 'keyDown'], [TOP_KEY_PRESS, 'keyPress'], [TOP_KEY_UP, 'keyUp'], [TOP_MOUSE_DOWN, 'mouseDown'], [TOP_MOUSE_UP, 'mouseUp'], [TOP_PASTE, 'paste'], [TOP_PAUSE, 'pause'], [TOP_PLAY, 'play'], [TOP_POINTER_CANCEL, 'pointerCancel'], [TOP_POINTER_DOWN, 'pointerDown'], [TOP_POINTER_UP, 'pointerUp'], [TOP_RATE_CHANGE, 'rateChange'], [TOP_RESET, 'reset'], [TOP_SEEKED, 'seeked'], [TOP_SUBMIT, 'submit'], [TOP_TOUCH_CANCEL, 'touchCancel'], [TOP_TOUCH_END, 'touchEnd'], [TOP_TOUCH_START, 'touchStart'], [TOP_VOLUME_CHANGE, 'volumeChange']];
var nonInteractiveEventTypeNames = [[TOP_ABORT, 'abort'], [TOP_ANIMATION_END, 'animationEnd'], [TOP_ANIMATION_ITERATION, 'animationIteration'], [TOP_ANIMATION_START, 'animationStart'], [TOP_CAN_PLAY, 'canPlay'], [TOP_CAN_PLAY_THROUGH, 'canPlayThrough'], [TOP_DRAG, 'drag'], [TOP_DRAG_ENTER, 'dragEnter'], [TOP_DRAG_EXIT, 'dragExit'], [TOP_DRAG_LEAVE, 'dragLeave'], [TOP_DRAG_OVER, 'dragOver'], [TOP_DURATION_CHANGE, 'durationChange'], [TOP_EMPTIED, 'emptied'], [TOP_ENCRYPTED, 'encrypted'], [TOP_ENDED, 'ended'], [TOP_ERROR, 'error'], [TOP_GOT_POINTER_CAPTURE, 'gotPointerCapture'], [TOP_LOAD, 'load'], [TOP_LOADED_DATA, 'loadedData'], [TOP_LOADED_METADATA, 'loadedMetadata'], [TOP_LOAD_START, 'loadStart'], [TOP_LOST_POINTER_CAPTURE, 'lostPointerCapture'], [TOP_MOUSE_MOVE, 'mouseMove'], [TOP_MOUSE_OUT, 'mouseOut'], [TOP_MOUSE_OVER, 'mouseOver'], [TOP_PLAYING, 'playing'], [TOP_POINTER_MOVE, 'pointerMove'], [TOP_POINTER_OUT, 'pointerOut'], [TOP_POINTER_OVER, 'pointerOver'], [TOP_PROGRESS, 'progress'], [TOP_SCROLL, 'scroll'], [TOP_SEEKING, 'seeking'], [TOP_STALLED, 'stalled'], [TOP_SUSPEND, 'suspend'], [TOP_TIME_UPDATE, 'timeUpdate'], [TOP_TOGGLE, 'toggle'], [TOP_TOUCH_MOVE, 'touchMove'], [TOP_TRANSITION_END, 'transitionEnd'], [TOP_WAITING, 'waiting'], [TOP_WHEEL, 'wheel']];

var eventTypes$4 = {};
var topLevelEventsToDispatchConfig = {};

function addEventTypeNameToConfig(_ref, isInteractive) {
  var topEvent = _ref[0],
      event = _ref[1];

  var capitalizedEvent = event[0].toUpperCase() + event.slice(1);
  var onEvent = 'on' + capitalizedEvent;

  var type = {
    phasedRegistrationNames: {
      bubbled: onEvent,
      captured: onEvent + 'Capture'
    },
    dependencies: [topEvent],
    isInteractive: isInteractive
  };
  eventTypes$4[event] = type;
  topLevelEventsToDispatchConfig[topEvent] = type;
}

interactiveEventTypeNames.forEach(function (eventTuple) {
  addEventTypeNameToConfig(eventTuple, true);
});
nonInteractiveEventTypeNames.forEach(function (eventTuple) {
  addEventTypeNameToConfig(eventTuple, false);
});

// Only used in DEV for exhaustiveness validation.
var knownHTMLTopLevelTypes = [TOP_ABORT, TOP_CANCEL, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_CLOSE, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_INPUT, TOP_INVALID, TOP_LOAD, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_RESET, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUBMIT, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_TOGGLE, TOP_VOLUME_CHANGE, TOP_WAITING];

var SimpleEventPlugin = {
  eventTypes: eventTypes$4,

  isInteractiveTopLevelEventType: function (topLevelType) {
    var config = topLevelEventsToDispatchConfig[topLevelType];
    return config !== undefined && config.isInteractive === true;
  },


  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var dispatchConfig = topLevelEventsToDispatchConfig[topLevelType];
    if (!dispatchConfig) {
      return null;
    }
    var EventConstructor = void 0;
    switch (topLevelType) {
      case TOP_KEY_PRESS:
        // Firefox creates a keypress event for function keys too. This removes
        // the unwanted keypress events. Enter is however both printable and
        // non-printable. One would expect Tab to be as well (but it isn't).
        if (getEventCharCode(nativeEvent) === 0) {
          return null;
        }
      /* falls through */
      case TOP_KEY_DOWN:
      case TOP_KEY_UP:
        EventConstructor = SyntheticKeyboardEvent;
        break;
      case TOP_BLUR:
      case TOP_FOCUS:
        EventConstructor = SyntheticFocusEvent;
        break;
      case TOP_CLICK:
        // Firefox creates a click event on right mouse clicks. This removes the
        // unwanted click events.
        if (nativeEvent.button === 2) {
          return null;
        }
      /* falls through */
      case TOP_AUX_CLICK:
      case TOP_DOUBLE_CLICK:
      case TOP_MOUSE_DOWN:
      case TOP_MOUSE_MOVE:
      case TOP_MOUSE_UP:
      // TODO: Disabled elements should not respond to mouse events
      /* falls through */
      case TOP_MOUSE_OUT:
      case TOP_MOUSE_OVER:
      case TOP_CONTEXT_MENU:
        EventConstructor = SyntheticMouseEvent;
        break;
      case TOP_DRAG:
      case TOP_DRAG_END:
      case TOP_DRAG_ENTER:
      case TOP_DRAG_EXIT:
      case TOP_DRAG_LEAVE:
      case TOP_DRAG_OVER:
      case TOP_DRAG_START:
      case TOP_DROP:
        EventConstructor = SyntheticDragEvent;
        break;
      case TOP_TOUCH_CANCEL:
      case TOP_TOUCH_END:
      case TOP_TOUCH_MOVE:
      case TOP_TOUCH_START:
        EventConstructor = SyntheticTouchEvent;
        break;
      case TOP_ANIMATION_END:
      case TOP_ANIMATION_ITERATION:
      case TOP_ANIMATION_START:
        EventConstructor = SyntheticAnimationEvent;
        break;
      case TOP_TRANSITION_END:
        EventConstructor = SyntheticTransitionEvent;
        break;
      case TOP_SCROLL:
        EventConstructor = SyntheticUIEvent;
        break;
      case TOP_WHEEL:
        EventConstructor = SyntheticWheelEvent;
        break;
      case TOP_COPY:
      case TOP_CUT:
      case TOP_PASTE:
        EventConstructor = SyntheticClipboardEvent;
        break;
      case TOP_GOT_POINTER_CAPTURE:
      case TOP_LOST_POINTER_CAPTURE:
      case TOP_POINTER_CANCEL:
      case TOP_POINTER_DOWN:
      case TOP_POINTER_MOVE:
      case TOP_POINTER_OUT:
      case TOP_POINTER_OVER:
      case TOP_POINTER_UP:
        EventConstructor = SyntheticPointerEvent;
        break;
      default:
        {
          if (knownHTMLTopLevelTypes.indexOf(topLevelType) === -1) {
            warningWithoutStack$1(false, 'SimpleEventPlugin: Unhandled event type, `%s`. This warning ' + 'is likely caused by a bug in React. Please file an issue.', topLevelType);
          }
        }
        // HTML Events
        // @see http://www.w3.org/TR/html5/index.html#events-0
        EventConstructor = SyntheticEvent;
        break;
    }
    var event = EventConstructor.getPooled(dispatchConfig, targetInst, nativeEvent, nativeEventTarget);
    accumulateTwoPhaseDispatches(event);
    return event;
  }
};

var isInteractiveTopLevelEventType = SimpleEventPlugin.isInteractiveTopLevelEventType;


var CALLBACK_BOOKKEEPING_POOL_SIZE = 10;
var callbackBookkeepingPool = [];

/**
 * Find the deepest React component completely containing the root of the
 * passed-in instance (for use when entire React trees are nested within each
 * other). If React trees are not nested, returns null.
 */
function findRootContainerNode(inst) {
  // TODO: It may be a good idea to cache this to prevent unnecessary DOM
  // traversal, but caching is difficult to do correctly without using a
  // mutation observer to listen for all DOM changes.
  while (inst.return) {
    inst = inst.return;
  }
  if (inst.tag !== HostRoot) {
    // This can happen if we're in a detached tree.
    return null;
  }
  return inst.stateNode.containerInfo;
}

// Used to store ancestor hierarchy in top level callback
function getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst) {
  if (callbackBookkeepingPool.length) {
    var instance = callbackBookkeepingPool.pop();
    instance.topLevelType = topLevelType;
    instance.nativeEvent = nativeEvent;
    instance.targetInst = targetInst;
    return instance;
  }
  return {
    topLevelType: topLevelType,
    nativeEvent: nativeEvent,
    targetInst: targetInst,
    ancestors: []
  };
}

function releaseTopLevelCallbackBookKeeping(instance) {
  instance.topLevelType = null;
  instance.nativeEvent = null;
  instance.targetInst = null;
  instance.ancestors.length = 0;
  if (callbackBookkeepingPool.length < CALLBACK_BOOKKEEPING_POOL_SIZE) {
    callbackBookkeepingPool.push(instance);
  }
}

function handleTopLevel(bookKeeping) {
  var targetInst = bookKeeping.targetInst;

  // Loop through the hierarchy, in case there's any nested components.
  // It's important that we build the array of ancestors before calling any
  // event handlers, because event handlers can modify the DOM, leading to
  // inconsistencies with ReactMount's node cache. See #1105.
  var ancestor = targetInst;
  do {
    if (!ancestor) {
      bookKeeping.ancestors.push(ancestor);
      break;
    }
    var root = findRootContainerNode(ancestor);
    if (!root) {
      break;
    }
    bookKeeping.ancestors.push(ancestor);
    ancestor = getClosestInstanceFromNode(root);
  } while (ancestor);

  for (var i = 0; i < bookKeeping.ancestors.length; i++) {
    targetInst = bookKeeping.ancestors[i];
    runExtractedEventsInBatch(bookKeeping.topLevelType, targetInst, bookKeeping.nativeEvent, getEventTarget(bookKeeping.nativeEvent));
  }
}

// TODO: can we stop exporting these?
var _enabled = true;

function setEnabled(enabled) {
  _enabled = !!enabled;
}

function isEnabled() {
  return _enabled;
}

/**
 * Traps top-level events by using event bubbling.
 *
 * @param {number} topLevelType Number from `TopLevelEventTypes`.
 * @param {object} element Element on which to attach listener.
 * @return {?object} An object with a remove function which will forcefully
 *                  remove the listener.
 * @internal
 */
function trapBubbledEvent(topLevelType, element) {
  if (!element) {
    return null;
  }
  var dispatch = isInteractiveTopLevelEventType(topLevelType) ? dispatchInteractiveEvent : dispatchEvent;

  addEventBubbleListener(element, getRawEventName(topLevelType),
  // Check if interactive and wrap in interactiveUpdates
  dispatch.bind(null, topLevelType));
}

/**
 * Traps a top-level event by using event capturing.
 *
 * @param {number} topLevelType Number from `TopLevelEventTypes`.
 * @param {object} element Element on which to attach listener.
 * @return {?object} An object with a remove function which will forcefully
 *                  remove the listener.
 * @internal
 */
function trapCapturedEvent(topLevelType, element) {
  if (!element) {
    return null;
  }
  var dispatch = isInteractiveTopLevelEventType(topLevelType) ? dispatchInteractiveEvent : dispatchEvent;

  addEventCaptureListener(element, getRawEventName(topLevelType),
  // Check if interactive and wrap in interactiveUpdates
  dispatch.bind(null, topLevelType));
}

function dispatchInteractiveEvent(topLevelType, nativeEvent) {
  interactiveUpdates(dispatchEvent, topLevelType, nativeEvent);
}

function dispatchEvent(topLevelType, nativeEvent) {
  if (!_enabled) {
    return;
  }

  var nativeEventTarget = getEventTarget(nativeEvent);
  var targetInst = getClosestInstanceFromNode(nativeEventTarget);
  if (targetInst !== null && typeof targetInst.tag === 'number' && !isFiberMounted(targetInst)) {
    // If we get an event (ex: img onload) before committing that
    // component's mount, ignore it for now (that is, treat it as if it was an
    // event on a non-React tree). We might also consider queueing events and
    // dispatching them after the mount.
    targetInst = null;
  }

  var bookKeeping = getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst);

  try {
    // Event queue being processed in the same cycle allows
    // `preventDefault`.
    batchedUpdates(handleTopLevel, bookKeeping);
  } finally {
    releaseTopLevelCallbackBookKeeping(bookKeeping);
  }
}

/**
 * Summary of `ReactBrowserEventEmitter` event handling:
 *
 *  - Top-level delegation is used to trap most native browser events. This
 *    may only occur in the main thread and is the responsibility of
 *    ReactDOMEventListener, which is injected and can therefore support
 *    pluggable event sources. This is the only work that occurs in the main
 *    thread.
 *
 *  - We normalize and de-duplicate events to account for browser quirks. This
 *    may be done in the worker thread.
 *
 *  - Forward these native events (with the associated top-level type used to
 *    trap it) to `EventPluginHub`, which in turn will ask plugins if they want
 *    to extract any synthetic events.
 *
 *  - The `EventPluginHub` will then process each event by annotating them with
 *    "dispatches", a sequence of listeners and IDs that care about that event.
 *
 *  - The `EventPluginHub` then dispatches the events.
 *
 * Overview of React and the event system:
 *
 * +------------+    .
 * |    DOM     |    .
 * +------------+    .
 *       |           .
 *       v           .
 * +------------+    .
 * | ReactEvent |    .
 * |  Listener  |    .
 * +------------+    .                         +-----------+
 *       |           .               +--------+|SimpleEvent|
 *       |           .               |         |Plugin     |
 * +-----|------+    .               v         +-----------+
 * |     |      |    .    +--------------+                    +------------+
 * |     +-----------.--->|EventPluginHub|                    |    Event   |
 * |            |    .    |              |     +-----------+  | Propagators|
 * | ReactEvent |    .    |              |     |TapEvent   |  |------------|
 * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|
 * |            |    .    |              |     +-----------+  |  utilities |
 * |     +-----------.--->|              |                    +------------+
 * |     |      |    .    +--------------+
 * +-----|------+    .                ^        +-----------+
 *       |           .                |        |Enter/Leave|
 *       +           .                +-------+|Plugin     |
 * +-------------+   .                         +-----------+
 * | application |   .
 * |-------------|   .
 * |             |   .
 * |             |   .
 * +-------------+   .
 *                   .
 *    React Core     .  General Purpose Event Plugin System
 */

var alreadyListeningTo = {};
var reactTopListenersCounter = 0;

/**
 * To ensure no conflicts with other potential React instances on the page
 */
var topListenersIDKey = '_reactListenersID' + ('' + Math.random()).slice(2);

function getListeningForDocument(mountAt) {
  // In IE8, `mountAt` is a host object and doesn't have `hasOwnProperty`
  // directly.
  if (!Object.prototype.hasOwnProperty.call(mountAt, topListenersIDKey)) {
    mountAt[topListenersIDKey] = reactTopListenersCounter++;
    alreadyListeningTo[mountAt[topListenersIDKey]] = {};
  }
  return alreadyListeningTo[mountAt[topListenersIDKey]];
}

/**
 * We listen for bubbled touch events on the document object.
 *
 * Firefox v8.01 (and possibly others) exhibited strange behavior when
 * mounting `onmousemove` events at some node that was not the document
 * element. The symptoms were that if your mouse is not moving over something
 * contained within that mount point (for example on the background) the
 * top-level listeners for `onmousemove` won't be called. However, if you
 * register the `mousemove` on the document object, then it will of course
 * catch all `mousemove`s. This along with iOS quirks, justifies restricting
 * top-level listeners to the document object only, at least for these
 * movement types of events and possibly all events.
 *
 * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
 *
 * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but
 * they bubble to document.
 *
 * @param {string} registrationName Name of listener (e.g. `onClick`).
 * @param {object} mountAt Container where to mount the listener
 */
function listenTo(registrationName, mountAt) {
  var isListening = getListeningForDocument(mountAt);
  var dependencies = registrationNameDependencies[registrationName];

  for (var i = 0; i < dependencies.length; i++) {
    var dependency = dependencies[i];
    if (!(isListening.hasOwnProperty(dependency) && isListening[dependency])) {
      switch (dependency) {
        case TOP_SCROLL:
          trapCapturedEvent(TOP_SCROLL, mountAt);
          break;
        case TOP_FOCUS:
        case TOP_BLUR:
          trapCapturedEvent(TOP_FOCUS, mountAt);
          trapCapturedEvent(TOP_BLUR, mountAt);
          // We set the flag for a single dependency later in this function,
          // but this ensures we mark both as attached rather than just one.
          isListening[TOP_BLUR] = true;
          isListening[TOP_FOCUS] = true;
          break;
        case TOP_CANCEL:
        case TOP_CLOSE:
          if (isEventSupported(getRawEventName(dependency))) {
            trapCapturedEvent(dependency, mountAt);
          }
          break;
        case TOP_INVALID:
        case TOP_SUBMIT:
        case TOP_RESET:
          // We listen to them on the target DOM elements.
          // Some of them bubble so we don't want them to fire twice.
          break;
        default:
          // By default, listen on the top level to all non-media events.
          // Media events don't bubble so adding the listener wouldn't do anything.
          var isMediaEvent = mediaEventTypes.indexOf(dependency) !== -1;
          if (!isMediaEvent) {
            trapBubbledEvent(dependency, mountAt);
          }
          break;
      }
      isListening[dependency] = true;
    }
  }
}

function isListeningToAllDependencies(registrationName, mountAt) {
  var isListening = getListeningForDocument(mountAt);
  var dependencies = registrationNameDependencies[registrationName];
  for (var i = 0; i < dependencies.length; i++) {
    var dependency = dependencies[i];
    if (!(isListening.hasOwnProperty(dependency) && isListening[dependency])) {
      return false;
    }
  }
  return true;
}

function getActiveElement(doc) {
  doc = doc || (typeof document !== 'undefined' ? document : undefined);
  if (typeof doc === 'undefined') {
    return null;
  }
  try {
    return doc.activeElement || doc.body;
  } catch (e) {
    return doc.body;
  }
}

/**
 * Given any node return the first leaf node without children.
 *
 * @param {DOMElement|DOMTextNode} node
 * @return {DOMElement|DOMTextNode}
 */
function getLeafNode(node) {
  while (node && node.firstChild) {
    node = node.firstChild;
  }
  return node;
}

/**
 * Get the next sibling within a container. This will walk up the
 * DOM if a node's siblings have been exhausted.
 *
 * @param {DOMElement|DOMTextNode} node
 * @return {?DOMElement|DOMTextNode}
 */
function getSiblingNode(node) {
  while (node) {
    if (node.nextSibling) {
      return node.nextSibling;
    }
    node = node.parentNode;
  }
}

/**
 * Get object describing the nodes which contain characters at offset.
 *
 * @param {DOMElement|DOMTextNode} root
 * @param {number} offset
 * @return {?object}
 */
function getNodeForCharacterOffset(root, offset) {
  var node = getLeafNode(root);
  var nodeStart = 0;
  var nodeEnd = 0;

  while (node) {
    if (node.nodeType === TEXT_NODE) {
      nodeEnd = nodeStart + node.textContent.length;

      if (nodeStart <= offset && nodeEnd >= offset) {
        return {
          node: node,
          offset: offset - nodeStart
        };
      }

      nodeStart = nodeEnd;
    }

    node = getLeafNode(getSiblingNode(node));
  }
}

/**
 * @param {DOMElement} outerNode
 * @return {?object}
 */
function getOffsets(outerNode) {
  var ownerDocument = outerNode.ownerDocument;

  var win = ownerDocument && ownerDocument.defaultView || window;
  var selection = win.getSelection && win.getSelection();

  if (!selection || selection.rangeCount === 0) {
    return null;
  }

  var anchorNode = selection.anchorNode,
      anchorOffset = selection.anchorOffset,
      focusNode = selection.focusNode,
      focusOffset = selection.focusOffset;

  // In Firefox, anchorNode and focusNode can be "anonymous divs", e.g. the
  // up/down buttons on an <input type="number">. Anonymous divs do not seem to
  // expose properties, triggering a "Permission denied error" if any of its
  // properties are accessed. The only seemingly possible way to avoid erroring
  // is to access a property that typically works for non-anonymous divs and
  // catch any error that may otherwise arise. See
  // https://bugzilla.mozilla.org/show_bug.cgi?id=208427

  try {
    /* eslint-disable no-unused-expressions */
    anchorNode.nodeType;
    focusNode.nodeType;
    /* eslint-enable no-unused-expressions */
  } catch (e) {
    return null;
  }

  return getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset);
}

/**
 * Returns {start, end} where `start` is the character/codepoint index of
 * (anchorNode, anchorOffset) within the textContent of `outerNode`, and
 * `end` is the index of (focusNode, focusOffset).
 *
 * Returns null if you pass in garbage input but we should probably just crash.
 *
 * Exported only for testing.
 */
function getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset) {
  var length = 0;
  var start = -1;
  var end = -1;
  var indexWithinAnchor = 0;
  var indexWithinFocus = 0;
  var node = outerNode;
  var parentNode = null;

  outer: while (true) {
    var next = null;

    while (true) {
      if (node === anchorNode && (anchorOffset === 0 || node.nodeType === TEXT_NODE)) {
        start = length + anchorOffset;
      }
      if (node === focusNode && (focusOffset === 0 || node.nodeType === TEXT_NODE)) {
        end = length + focusOffset;
      }

      if (node.nodeType === TEXT_NODE) {
        length += node.nodeValue.length;
      }

      if ((next = node.firstChild) === null) {
        break;
      }
      // Moving from `node` to its first child `next`.
      parentNode = node;
      node = next;
    }

    while (true) {
      if (node === outerNode) {
        // If `outerNode` has children, this is always the second time visiting
        // it. If it has no children, this is still the first loop, and the only
        // valid selection is anchorNode and focusNode both equal to this node
        // and both offsets 0, in which case we will have handled above.
        break outer;
      }
      if (parentNode === anchorNode && ++indexWithinAnchor === anchorOffset) {
        start = length;
      }
      if (parentNode === focusNode && ++indexWithinFocus === focusOffset) {
        end = length;
      }
      if ((next = node.nextSibling) !== null) {
        break;
      }
      node = parentNode;
      parentNode = node.parentNode;
    }

    // Moving from `node` to its next sibling `next`.
    node = next;
  }

  if (start === -1 || end === -1) {
    // This should never happen. (Would happen if the anchor/focus nodes aren't
    // actually inside the passed-in node.)
    return null;
  }

  return {
    start: start,
    end: end
  };
}

/**
 * In modern non-IE browsers, we can support both forward and backward
 * selections.
 *
 * Note: IE10+ supports the Selection object, but it does not support
 * the `extend` method, which means that even in modern IE, it's not possible
 * to programmatically create a backward selection. Thus, for all IE
 * versions, we use the old IE API to create our selections.
 *
 * @param {DOMElement|DOMTextNode} node
 * @param {object} offsets
 */
function setOffsets(node, offsets) {
  var doc = node.ownerDocument || document;
  var win = doc && doc.defaultView || window;

  // Edge fails with "Object expected" in some scenarios.
  // (For instance: TinyMCE editor used in a list component that supports pasting to add more,
  // fails when pasting 100+ items)
  if (!win.getSelection) {
    return;
  }

  var selection = win.getSelection();
  var length = node.textContent.length;
  var start = Math.min(offsets.start, length);
  var end = offsets.end === undefined ? start : Math.min(offsets.end, length);

  // IE 11 uses modern selection, but doesn't support the extend method.
  // Flip backward selections, so we can set with a single range.
  if (!selection.extend && start > end) {
    var temp = end;
    end = start;
    start = temp;
  }

  var startMarker = getNodeForCharacterOffset(node, start);
  var endMarker = getNodeForCharacterOffset(node, end);

  if (startMarker && endMarker) {
    if (selection.rangeCount === 1 && selection.anchorNode === startMarker.node && selection.anchorOffset === startMarker.offset && selection.focusNode === endMarker.node && selection.focusOffset === endMarker.offset) {
      return;
    }
    var range = doc.createRange();
    range.setStart(startMarker.node, startMarker.offset);
    selection.removeAllRanges();

    if (start > end) {
      selection.addRange(range);
      selection.extend(endMarker.node, endMarker.offset);
    } else {
      range.setEnd(endMarker.node, endMarker.offset);
      selection.addRange(range);
    }
  }
}

function isTextNode(node) {
  return node && node.nodeType === TEXT_NODE;
}

function containsNode(outerNode, innerNode) {
  if (!outerNode || !innerNode) {
    return false;
  } else if (outerNode === innerNode) {
    return true;
  } else if (isTextNode(outerNode)) {
    return false;
  } else if (isTextNode(innerNode)) {
    return containsNode(outerNode, innerNode.parentNode);
  } else if ('contains' in outerNode) {
    return outerNode.contains(innerNode);
  } else if (outerNode.compareDocumentPosition) {
    return !!(outerNode.compareDocumentPosition(innerNode) & 16);
  } else {
    return false;
  }
}

function isInDocument(node) {
  return node && node.ownerDocument && containsNode(node.ownerDocument.documentElement, node);
}

function getActiveElementDeep() {
  var win = window;
  var element = getActiveElement();
  while (element instanceof win.HTMLIFrameElement) {
    // Accessing the contentDocument of a HTMLIframeElement can cause the browser
    // to throw, e.g. if it has a cross-origin src attribute
    try {
      win = element.contentDocument.defaultView;
    } catch (e) {
      return element;
    }
    element = getActiveElement(win.document);
  }
  return element;
}

/**
 * @ReactInputSelection: React input selection module. Based on Selection.js,
 * but modified to be suitable for react and has a couple of bug fixes (doesn't
 * assume buttons have range selections allowed).
 * Input selection module for React.
 */

/**
 * @hasSelectionCapabilities: we get the element types that support selection
 * from https://html.spec.whatwg.org/#do-not-apply, looking at `selectionStart`
 * and `selectionEnd` rows.
 */
function hasSelectionCapabilities(elem) {
  var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();
  return nodeName && (nodeName === 'input' && (elem.type === 'text' || elem.type === 'search' || elem.type === 'tel' || elem.type === 'url' || elem.type === 'password') || nodeName === 'textarea' || elem.contentEditable === 'true');
}

function getSelectionInformation() {
  var focusedElem = getActiveElementDeep();
  return {
    focusedElem: focusedElem,
    selectionRange: hasSelectionCapabilities(focusedElem) ? getSelection$1(focusedElem) : null
  };
}

/**
 * @restoreSelection: If any selection information was potentially lost,
 * restore it. This is useful when performing operations that could remove dom
 * nodes and place them back in, resulting in focus being lost.
 */
function restoreSelection(priorSelectionInformation) {
  var curFocusedElem = getActiveElementDeep();
  var priorFocusedElem = priorSelectionInformation.focusedElem;
  var priorSelectionRange = priorSelectionInformation.selectionRange;
  if (curFocusedElem !== priorFocusedElem && isInDocument(priorFocusedElem)) {
    if (priorSelectionRange !== null && hasSelectionCapabilities(priorFocusedElem)) {
      setSelection(priorFocusedElem, priorSelectionRange);
    }

    // Focusing a node can change the scroll position, which is undesirable
    var ancestors = [];
    var ancestor = priorFocusedElem;
    while (ancestor = ancestor.parentNode) {
      if (ancestor.nodeType === ELEMENT_NODE) {
        ancestors.push({
          element: ancestor,
          left: ancestor.scrollLeft,
          top: ancestor.scrollTop
        });
      }
    }

    if (typeof priorFocusedElem.focus === 'function') {
      priorFocusedElem.focus();
    }

    for (var i = 0; i < ancestors.length; i++) {
      var info = ancestors[i];
      info.element.scrollLeft = info.left;
      info.element.scrollTop = info.top;
    }
  }
}

/**
 * @getSelection: Gets the selection bounds of a focused textarea, input or
 * contentEditable node.
 * -@input: Look up selection bounds of this input
 * -@return {start: selectionStart, end: selectionEnd}
 */
function getSelection$1(input) {
  var selection = void 0;

  if ('selectionStart' in input) {
    // Modern browser with input or textarea.
    selection = {
      start: input.selectionStart,
      end: input.selectionEnd
    };
  } else {
    // Content editable or old IE textarea.
    selection = getOffsets(input);
  }

  return selection || { start: 0, end: 0 };
}

/**
 * @setSelection: Sets the selection bounds of a textarea or input and focuses
 * the input.
 * -@input     Set selection bounds of this input or textarea
 * -@offsets   Object of same form that is returned from get*
 */
function setSelection(input, offsets) {
  var start = offsets.start,
      end = offsets.end;

  if (end === undefined) {
    end = start;
  }

  if ('selectionStart' in input) {
    input.selectionStart = start;
    input.selectionEnd = Math.min(end, input.value.length);
  } else {
    setOffsets(input, offsets);
  }
}

var skipSelectionChangeEvent = canUseDOM && 'documentMode' in document && document.documentMode <= 11;

var eventTypes$3 = {
  select: {
    phasedRegistrationNames: {
      bubbled: 'onSelect',
      captured: 'onSelectCapture'
    },
    dependencies: [TOP_BLUR, TOP_CONTEXT_MENU, TOP_DRAG_END, TOP_FOCUS, TOP_KEY_DOWN, TOP_KEY_UP, TOP_MOUSE_DOWN, TOP_MOUSE_UP, TOP_SELECTION_CHANGE]
  }
};

var activeElement$1 = null;
var activeElementInst$1 = null;
var lastSelection = null;
var mouseDown = false;

/**
 * Get an object which is a unique representation of the current selection.
 *
 * The return value will not be consistent across nodes or browsers, but
 * two identical selections on the same node will return identical objects.
 *
 * @param {DOMElement} node
 * @return {object}
 */
function getSelection(node) {
  if ('selectionStart' in node && hasSelectionCapabilities(node)) {
    return {
      start: node.selectionStart,
      end: node.selectionEnd
    };
  } else {
    var win = node.ownerDocument && node.ownerDocument.defaultView || window;
    var selection = win.getSelection();
    return {
      anchorNode: selection.anchorNode,
      anchorOffset: selection.anchorOffset,
      focusNode: selection.focusNode,
      focusOffset: selection.focusOffset
    };
  }
}

/**
 * Get document associated with the event target.
 *
 * @param {object} nativeEventTarget
 * @return {Document}
 */
function getEventTargetDocument(eventTarget) {
  return eventTarget.window === eventTarget ? eventTarget.document : eventTarget.nodeType === DOCUMENT_NODE ? eventTarget : eventTarget.ownerDocument;
}

/**
 * Poll selection to see whether it's changed.
 *
 * @param {object} nativeEvent
 * @param {object} nativeEventTarget
 * @return {?SyntheticEvent}
 */
function constructSelectEvent(nativeEvent, nativeEventTarget) {
  // Ensure we have the right element, and that the user is not dragging a
  // selection (this matches native `select` event behavior). In HTML5, select
  // fires only on input and textarea thus if there's no focused element we
  // won't dispatch.
  var doc = getEventTargetDocument(nativeEventTarget);

  if (mouseDown || activeElement$1 == null || activeElement$1 !== getActiveElement(doc)) {
    return null;
  }

  // Only fire when selection has actually changed.
  var currentSelection = getSelection(activeElement$1);
  if (!lastSelection || !shallowEqual(lastSelection, currentSelection)) {
    lastSelection = currentSelection;

    var syntheticEvent = SyntheticEvent.getPooled(eventTypes$3.select, activeElementInst$1, nativeEvent, nativeEventTarget);

    syntheticEvent.type = 'select';
    syntheticEvent.target = activeElement$1;

    accumulateTwoPhaseDispatches(syntheticEvent);

    return syntheticEvent;
  }

  return null;
}

/**
 * This plugin creates an `onSelect` event that normalizes select events
 * across form elements.
 *
 * Supported elements are:
 * - input (see `isTextInputElement`)
 * - textarea
 * - contentEditable
 *
 * This differs from native browser implementations in the following ways:
 * - Fires on contentEditable fields as well as inputs.
 * - Fires for collapsed selection.
 * - Fires after user input.
 */
var SelectEventPlugin = {
  eventTypes: eventTypes$3,

  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var doc = getEventTargetDocument(nativeEventTarget);
    // Track whether all listeners exists for this plugin. If none exist, we do
    // not extract events. See #3639.
    if (!doc || !isListeningToAllDependencies('onSelect', doc)) {
      return null;
    }

    var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window;

    switch (topLevelType) {
      // Track the input node that has focus.
      case TOP_FOCUS:
        if (isTextInputElement(targetNode) || targetNode.contentEditable === 'true') {
          activeElement$1 = targetNode;
          activeElementInst$1 = targetInst;
          lastSelection = null;
        }
        break;
      case TOP_BLUR:
        activeElement$1 = null;
        activeElementInst$1 = null;
        lastSelection = null;
        break;
      // Don't fire the event while the user is dragging. This matches the
      // semantics of the native select event.
      case TOP_MOUSE_DOWN:
        mouseDown = true;
        break;
      case TOP_CONTEXT_MENU:
      case TOP_MOUSE_UP:
      case TOP_DRAG_END:
        mouseDown = false;
        return constructSelectEvent(nativeEvent, nativeEventTarget);
      // Chrome and IE fire non-standard event when selection is changed (and
      // sometimes when it hasn't). IE's event fires out of order with respect
      // to key and input events on deletion, so we discard it.
      //
      // Firefox doesn't support selectionchange, so check selection status
      // after each key entry. The selection changes after keydown and before
      // keyup, but we check on keydown as well in the case of holding down a
      // key, when multiple keydown events are fired but only one keyup is.
      // This is also our approach for IE handling, for the reason above.
      case TOP_SELECTION_CHANGE:
        if (skipSelectionChangeEvent) {
          break;
        }
      // falls through
      case TOP_KEY_DOWN:
      case TOP_KEY_UP:
        return constructSelectEvent(nativeEvent, nativeEventTarget);
    }

    return null;
  }
};

/**
 * Inject modules for resolving DOM hierarchy and plugin ordering.
 */
injection.injectEventPluginOrder(DOMEventPluginOrder);
setComponentTree(getFiberCurrentPropsFromNode$1, getInstanceFromNode$1, getNodeFromInstance$1);

/**
 * Some important event plugins included by default (without having to require
 * them).
 */
injection.injectEventPluginsByName({
  SimpleEventPlugin: SimpleEventPlugin,
  EnterLeaveEventPlugin: EnterLeaveEventPlugin,
  ChangeEventPlugin: ChangeEventPlugin,
  SelectEventPlugin: SelectEventPlugin,
  BeforeInputEventPlugin: BeforeInputEventPlugin
});

var didWarnSelectedSetOnOption = false;
var didWarnInvalidChild = false;

function flattenChildren(children) {
  var content = '';

  // Flatten children. We'll warn if they are invalid
  // during validateProps() which runs for hydration too.
  // Note that this would throw on non-element objects.
  // Elements are stringified (which is normally irrelevant
  // but matters for <fbt>).
  React.Children.forEach(children, function (child) {
    if (child == null) {
      return;
    }
    content += child;
    // Note: we don't warn about invalid children here.
    // Instead, this is done separately below so that
    // it happens during the hydration codepath too.
  });

  return content;
}

/**
 * Implements an <option> host component that warns when `selected` is set.
 */

function validateProps(element, props) {
  {
    // This mirrors the codepath above, but runs for hydration too.
    // Warn about invalid children here so that client and hydration are consistent.
    // TODO: this seems like it could cause a DEV-only throw for hydration
    // if children contains a non-element object. We should try to avoid that.
    if (typeof props.children === 'object' && props.children !== null) {
      React.Children.forEach(props.children, function (child) {
        if (child == null) {
          return;
        }
        if (typeof child === 'string' || typeof child === 'number') {
          return;
        }
        if (typeof child.type !== 'string') {
          return;
        }
        if (!didWarnInvalidChild) {
          didWarnInvalidChild = true;
          warning$1(false, 'Only strings and numbers are supported as <option> children.');
        }
      });
    }

    // TODO: Remove support for `selected` in <option>.
    if (props.selected != null && !didWarnSelectedSetOnOption) {
      warning$1(false, 'Use the `defaultValue` or `value` props on <select> instead of ' + 'setting `selected` on <option>.');
      didWarnSelectedSetOnOption = true;
    }
  }
}

function postMountWrapper$1(element, props) {
  // value="" should make a value attribute (#6219)
  if (props.value != null) {
    element.setAttribute('value', toString(getToStringValue(props.value)));
  }
}

function getHostProps$1(element, props) {
  var hostProps = _assign({ children: undefined }, props);
  var content = flattenChildren(props.children);

  if (content) {
    hostProps.children = content;
  }

  return hostProps;
}

// TODO: direct imports like some-package/src/* are bad. Fix me.
var didWarnValueDefaultValue$1 = void 0;

{
  didWarnValueDefaultValue$1 = false;
}

function getDeclarationErrorAddendum() {
  var ownerName = getCurrentFiberOwnerNameInDevOrNull();
  if (ownerName) {
    return '\n\nCheck the render method of `' + ownerName + '`.';
  }
  return '';
}

var valuePropNames = ['value', 'defaultValue'];

/**
 * Validation function for `value` and `defaultValue`.
 */
function checkSelectPropTypes(props) {
  ReactControlledValuePropTypes.checkPropTypes('select', props);

  for (var i = 0; i < valuePropNames.length; i++) {
    var propName = valuePropNames[i];
    if (props[propName] == null) {
      continue;
    }
    var isArray = Array.isArray(props[propName]);
    if (props.multiple && !isArray) {
      warning$1(false, 'The `%s` prop supplied to <select> must be an array if ' + '`multiple` is true.%s', propName, getDeclarationErrorAddendum());
    } else if (!props.multiple && isArray) {
      warning$1(false, 'The `%s` prop supplied to <select> must be a scalar ' + 'value if `multiple` is false.%s', propName, getDeclarationErrorAddendum());
    }
  }
}

function updateOptions(node, multiple, propValue, setDefaultSelected) {
  var options = node.options;

  if (multiple) {
    var selectedValues = propValue;
    var selectedValue = {};
    for (var i = 0; i < selectedValues.length; i++) {
      // Prefix to avoid chaos with special keys.
      selectedValue['$' + selectedValues[i]] = true;
    }
    for (var _i = 0; _i < options.length; _i++) {
      var selected = selectedValue.hasOwnProperty('$' + options[_i].value);
      if (options[_i].selected !== selected) {
        options[_i].selected = selected;
      }
      if (selected && setDefaultSelected) {
        options[_i].defaultSelected = true;
      }
    }
  } else {
    // Do not set `select.value` as exact behavior isn't consistent across all
    // browsers for all cases.
    var _selectedValue = toString(getToStringValue(propValue));
    var defaultSelected = null;
    for (var _i2 = 0; _i2 < options.length; _i2++) {
      if (options[_i2].value === _selectedValue) {
        options[_i2].selected = true;
        if (setDefaultSelected) {
          options[_i2].defaultSelected = true;
        }
        return;
      }
      if (defaultSelected === null && !options[_i2].disabled) {
        defaultSelected = options[_i2];
      }
    }
    if (defaultSelected !== null) {
      defaultSelected.selected = true;
    }
  }
}

/**
 * Implements a <select> host component that allows optionally setting the
 * props `value` and `defaultValue`. If `multiple` is false, the prop must be a
 * stringable. If `multiple` is true, the prop must be an array of stringables.
 *
 * If `value` is not supplied (or null/undefined), user actions that change the
 * selected option will trigger updates to the rendered options.
 *
 * If it is supplied (and not null/undefined), the rendered options will not
 * update in response to user actions. Instead, the `value` prop must change in
 * order for the rendered options to update.
 *
 * If `defaultValue` is provided, any options with the supplied values will be
 * selected.
 */

function getHostProps$2(element, props) {
  return _assign({}, props, {
    value: undefined
  });
}

function initWrapperState$1(element, props) {
  var node = element;
  {
    checkSelectPropTypes(props);
  }

  node._wrapperState = {
    wasMultiple: !!props.multiple
  };

  {
    if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValueDefaultValue$1) {
      warning$1(false, 'Select elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled select ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
      didWarnValueDefaultValue$1 = true;
    }
  }
}

function postMountWrapper$2(element, props) {
  var node = element;
  node.multiple = !!props.multiple;
  var value = props.value;
  if (value != null) {
    updateOptions(node, !!props.multiple, value, false);
  } else if (props.defaultValue != null) {
    updateOptions(node, !!props.multiple, props.defaultValue, true);
  }
}

function postUpdateWrapper(element, props) {
  var node = element;
  var wasMultiple = node._wrapperState.wasMultiple;
  node._wrapperState.wasMultiple = !!props.multiple;

  var value = props.value;
  if (value != null) {
    updateOptions(node, !!props.multiple, value, false);
  } else if (wasMultiple !== !!props.multiple) {
    // For simplicity, reapply `defaultValue` if `multiple` is toggled.
    if (props.defaultValue != null) {
      updateOptions(node, !!props.multiple, props.defaultValue, true);
    } else {
      // Revert the select back to its default unselected state.
      updateOptions(node, !!props.multiple, props.multiple ? [] : '', false);
    }
  }
}

function restoreControlledState$2(element, props) {
  var node = element;
  var value = props.value;

  if (value != null) {
    updateOptions(node, !!props.multiple, value, false);
  }
}

var didWarnValDefaultVal = false;

/**
 * Implements a <textarea> host component that allows setting `value`, and
 * `defaultValue`. This differs from the traditional DOM API because value is
 * usually set as PCDATA children.
 *
 * If `value` is not supplied (or null/undefined), user actions that affect the
 * value will trigger updates to the element.
 *
 * If `value` is supplied (and not null/undefined), the rendered element will
 * not trigger updates to the element. Instead, the `value` prop must change in
 * order for the rendered element to be updated.
 *
 * The rendered element will be initialized with an empty value, the prop
 * `defaultValue` if specified, or the children content (deprecated).
 */

function getHostProps$3(element, props) {
  var node = element;
  !(props.dangerouslySetInnerHTML == null) ? invariant(false, '`dangerouslySetInnerHTML` does not make sense on <textarea>.') : void 0;

  // Always set children to the same thing. In IE9, the selection range will
  // get reset if `textContent` is mutated.  We could add a check in setTextContent
  // to only set the value if/when the value differs from the node value (which would
  // completely solve this IE9 bug), but Sebastian+Sophie seemed to like this
  // solution. The value can be a boolean or object so that's why it's forced
  // to be a string.
  var hostProps = _assign({}, props, {
    value: undefined,
    defaultValue: undefined,
    children: toString(node._wrapperState.initialValue)
  });

  return hostProps;
}

function initWrapperState$2(element, props) {
  var node = element;
  {
    ReactControlledValuePropTypes.checkPropTypes('textarea', props);
    if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValDefaultVal) {
      warning$1(false, '%s contains a textarea with both value and defaultValue props. ' + 'Textarea elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled textarea ' + 'and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component');
      didWarnValDefaultVal = true;
    }
  }

  var initialValue = props.value;

  // Only bother fetching default value if we're going to use it
  if (initialValue == null) {
    var defaultValue = props.defaultValue;
    // TODO (yungsters): Remove support for children content in <textarea>.
    var children = props.children;
    if (children != null) {
      {
        warning$1(false, 'Use the `defaultValue` or `value` props instead of setting ' + 'children on <textarea>.');
      }
      !(defaultValue == null) ? invariant(false, 'If you supply `defaultValue` on a <textarea>, do not pass children.') : void 0;
      if (Array.isArray(children)) {
        !(children.length <= 1) ? invariant(false, '<textarea> can only have at most one child.') : void 0;
        children = children[0];
      }

      defaultValue = children;
    }
    if (defaultValue == null) {
      defaultValue = '';
    }
    initialValue = defaultValue;
  }

  node._wrapperState = {
    initialValue: getToStringValue(initialValue)
  };
}

function updateWrapper$1(element, props) {
  var node = element;
  var value = getToStringValue(props.value);
  var defaultValue = getToStringValue(props.defaultValue);
  if (value != null) {
    // Cast `value` to a string to ensure the value is set correctly. While
    // browsers typically do this as necessary, jsdom doesn't.
    var newValue = toString(value);
    // To avoid side effects (such as losing text selection), only set value if changed
    if (newValue !== node.value) {
      node.value = newValue;
    }
    if (props.defaultValue == null && node.defaultValue !== newValue) {
      node.defaultValue = newValue;
    }
  }
  if (defaultValue != null) {
    node.defaultValue = toString(defaultValue);
  }
}

function postMountWrapper$3(element, props) {
  var node = element;
  // This is in postMount because we need access to the DOM node, which is not
  // available until after the component has mounted.
  var textContent = node.textContent;

  // Only set node.value if textContent is equal to the expected
  // initial value. In IE10/IE11 there is a bug where the placeholder attribute
  // will populate textContent as well.
  // https://developer.microsoft.com/microsoft-edge/platform/issues/101525/
  if (textContent === node._wrapperState.initialValue) {
    node.value = textContent;
  }
}

function restoreControlledState$3(element, props) {
  // DOM component is still mounted; update
  updateWrapper$1(element, props);
}

var HTML_NAMESPACE$1 = 'http://www.w3.org/1999/xhtml';
var MATH_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';

var Namespaces = {
  html: HTML_NAMESPACE$1,
  mathml: MATH_NAMESPACE,
  svg: SVG_NAMESPACE
};

// Assumes there is no parent namespace.
function getIntrinsicNamespace(type) {
  switch (type) {
    case 'svg':
      return SVG_NAMESPACE;
    case 'math':
      return MATH_NAMESPACE;
    default:
      return HTML_NAMESPACE$1;
  }
}

function getChildNamespace(parentNamespace, type) {
  if (parentNamespace == null || parentNamespace === HTML_NAMESPACE$1) {
    // No (or default) parent namespace: potential entry point.
    return getIntrinsicNamespace(type);
  }
  if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {
    // We're leaving SVG.
    return HTML_NAMESPACE$1;
  }
  // By default, pass namespace below.
  return parentNamespace;
}

/* globals MSApp */

/**
 * Create a function which has 'unsafe' privileges (required by windows8 apps)
 */
var createMicrosoftUnsafeLocalFunction = function (func) {
  if (typeof MSApp !== 'undefined' && MSApp.execUnsafeLocalFunction) {
    return function (arg0, arg1, arg2, arg3) {
      MSApp.execUnsafeLocalFunction(function () {
        return func(arg0, arg1, arg2, arg3);
      });
    };
  } else {
    return func;
  }
};

// SVG temp container for IE lacking innerHTML
var reusableSVGContainer = void 0;

/**
 * Set the innerHTML property of a node
 *
 * @param {DOMElement} node
 * @param {string} html
 * @internal
 */
var setInnerHTML = createMicrosoftUnsafeLocalFunction(function (node, html) {
  // IE does not have innerHTML for SVG nodes, so instead we inject the
  // new markup in a temp node and then move the child nodes across into
  // the target node

  if (node.namespaceURI === Namespaces.svg && !('innerHTML' in node)) {
    reusableSVGContainer = reusableSVGContainer || document.createElement('div');
    reusableSVGContainer.innerHTML = '<svg>' + html + '</svg>';
    var svgNode = reusableSVGContainer.firstChild;
    while (node.firstChild) {
      node.removeChild(node.firstChild);
    }
    while (svgNode.firstChild) {
      node.appendChild(svgNode.firstChild);
    }
  } else {
    node.innerHTML = html;
  }
});

/**
 * Set the textContent property of a node. For text updates, it's faster
 * to set the `nodeValue` of the Text node directly instead of using
 * `.textContent` which will remove the existing node and create a new one.
 *
 * @param {DOMElement} node
 * @param {string} text
 * @internal
 */
var setTextContent = function (node, text) {
  if (text) {
    var firstChild = node.firstChild;

    if (firstChild && firstChild === node.lastChild && firstChild.nodeType === TEXT_NODE) {
      firstChild.nodeValue = text;
      return;
    }
  }
  node.textContent = text;
};

// List derived from Gecko source code:
// https://github.com/mozilla/gecko-dev/blob/4e638efc71/layout/style/test/property_database.js
var shorthandToLonghand = {
  animation: ['animationDelay', 'animationDirection', 'animationDuration', 'animationFillMode', 'animationIterationCount', 'animationName', 'animationPlayState', 'animationTimingFunction'],
  background: ['backgroundAttachment', 'backgroundClip', 'backgroundColor', 'backgroundImage', 'backgroundOrigin', 'backgroundPositionX', 'backgroundPositionY', 'backgroundRepeat', 'backgroundSize'],
  backgroundPosition: ['backgroundPositionX', 'backgroundPositionY'],
  border: ['borderBottomColor', 'borderBottomStyle', 'borderBottomWidth', 'borderImageOutset', 'borderImageRepeat', 'borderImageSlice', 'borderImageSource', 'borderImageWidth', 'borderLeftColor', 'borderLeftStyle', 'borderLeftWidth', 'borderRightColor', 'borderRightStyle', 'borderRightWidth', 'borderTopColor', 'borderTopStyle', 'borderTopWidth'],
  borderBlockEnd: ['borderBlockEndColor', 'borderBlockEndStyle', 'borderBlockEndWidth'],
  borderBlockStart: ['borderBlockStartColor', 'borderBlockStartStyle', 'borderBlockStartWidth'],
  borderBottom: ['borderBottomColor', 'borderBottomStyle', 'borderBottomWidth'],
  borderColor: ['borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor'],
  borderImage: ['borderImageOutset', 'borderImageRepeat', 'borderImageSlice', 'borderImageSource', 'borderImageWidth'],
  borderInlineEnd: ['borderInlineEndColor', 'borderInlineEndStyle', 'borderInlineEndWidth'],
  borderInlineStart: ['borderInlineStartColor', 'borderInlineStartStyle', 'borderInlineStartWidth'],
  borderLeft: ['borderLeftColor', 'borderLeftStyle', 'borderLeftWidth'],
  borderRadius: ['borderBottomLeftRadius', 'borderBottomRightRadius', 'borderTopLeftRadius', 'borderTopRightRadius'],
  borderRight: ['borderRightColor', 'borderRightStyle', 'borderRightWidth'],
  borderStyle: ['borderBottomStyle', 'borderLeftStyle', 'borderRightStyle', 'borderTopStyle'],
  borderTop: ['borderTopColor', 'borderTopStyle', 'borderTopWidth'],
  borderWidth: ['borderBottomWidth', 'borderLeftWidth', 'borderRightWidth', 'borderTopWidth'],
  columnRule: ['columnRuleColor', 'columnRuleStyle', 'columnRuleWidth'],
  columns: ['columnCount', 'columnWidth'],
  flex: ['flexBasis', 'flexGrow', 'flexShrink'],
  flexFlow: ['flexDirection', 'flexWrap'],
  font: ['fontFamily', 'fontFeatureSettings', 'fontKerning', 'fontLanguageOverride', 'fontSize', 'fontSizeAdjust', 'fontStretch', 'fontStyle', 'fontVariant', 'fontVariantAlternates', 'fontVariantCaps', 'fontVariantEastAsian', 'fontVariantLigatures', 'fontVariantNumeric', 'fontVariantPosition', 'fontWeight', 'lineHeight'],
  fontVariant: ['fontVariantAlternates', 'fontVariantCaps', 'fontVariantEastAsian', 'fontVariantLigatures', 'fontVariantNumeric', 'fontVariantPosition'],
  gap: ['columnGap', 'rowGap'],
  grid: ['gridAutoColumns', 'gridAutoFlow', 'gridAutoRows', 'gridTemplateAreas', 'gridTemplateColumns', 'gridTemplateRows'],
  gridArea: ['gridColumnEnd', 'gridColumnStart', 'gridRowEnd', 'gridRowStart'],
  gridColumn: ['gridColumnEnd', 'gridColumnStart'],
  gridColumnGap: ['columnGap'],
  gridGap: ['columnGap', 'rowGap'],
  gridRow: ['gridRowEnd', 'gridRowStart'],
  gridRowGap: ['rowGap'],
  gridTemplate: ['gridTemplateAreas', 'gridTemplateColumns', 'gridTemplateRows'],
  listStyle: ['listStyleImage', 'listStylePosition', 'listStyleType'],
  margin: ['marginBottom', 'marginLeft', 'marginRight', 'marginTop'],
  marker: ['markerEnd', 'markerMid', 'markerStart'],
  mask: ['maskClip', 'maskComposite', 'maskImage', 'maskMode', 'maskOrigin', 'maskPositionX', 'maskPositionY', 'maskRepeat', 'maskSize'],
  maskPosition: ['maskPositionX', 'maskPositionY'],
  outline: ['outlineColor', 'outlineStyle', 'outlineWidth'],
  overflow: ['overflowX', 'overflowY'],
  padding: ['paddingBottom', 'paddingLeft', 'paddingRight', 'paddingTop'],
  placeContent: ['alignContent', 'justifyContent'],
  placeItems: ['alignItems', 'justifyItems'],
  placeSelf: ['alignSelf', 'justifySelf'],
  textDecoration: ['textDecorationColor', 'textDecorationLine', 'textDecorationStyle'],
  textEmphasis: ['textEmphasisColor', 'textEmphasisStyle'],
  transition: ['transitionDelay', 'transitionDuration', 'transitionProperty', 'transitionTimingFunction'],
  wordWrap: ['overflowWrap']
};

/**
 * CSS properties which accept numbers but are not in units of "px".
 */
var isUnitlessNumber = {
  animationIterationCount: true,
  borderImageOutset: true,
  borderImageSlice: true,
  borderImageWidth: true,
  boxFlex: true,
  boxFlexGroup: true,
  boxOrdinalGroup: true,
  columnCount: true,
  columns: true,
  flex: true,
  flexGrow: true,
  flexPositive: true,
  flexShrink: true,
  flexNegative: true,
  flexOrder: true,
  gridArea: true,
  gridRow: true,
  gridRowEnd: true,
  gridRowSpan: true,
  gridRowStart: true,
  gridColumn: true,
  gridColumnEnd: true,
  gridColumnSpan: true,
  gridColumnStart: true,
  fontWeight: true,
  lineClamp: true,
  lineHeight: true,
  opacity: true,
  order: true,
  orphans: true,
  tabSize: true,
  widows: true,
  zIndex: true,
  zoom: true,

  // SVG-related properties
  fillOpacity: true,
  floodOpacity: true,
  stopOpacity: true,
  strokeDasharray: true,
  strokeDashoffset: true,
  strokeMiterlimit: true,
  strokeOpacity: true,
  strokeWidth: true
};

/**
 * @param {string} prefix vendor-specific prefix, eg: Webkit
 * @param {string} key style name, eg: transitionDuration
 * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
 * WebkitTransitionDuration
 */
function prefixKey(prefix, key) {
  return prefix + key.charAt(0).toUpperCase() + key.substring(1);
}

/**
 * Support style names that may come passed in prefixed by adding permutations
 * of vendor prefixes.
 */
var prefixes = ['Webkit', 'ms', 'Moz', 'O'];

// Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
// infinite loop, because it iterates over the newly added props too.
Object.keys(isUnitlessNumber).forEach(function (prop) {
  prefixes.forEach(function (prefix) {
    isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
  });
});

/**
 * Convert a value into the proper css writable value. The style name `name`
 * should be logical (no hyphens), as specified
 * in `CSSProperty.isUnitlessNumber`.
 *
 * @param {string} name CSS property name such as `topMargin`.
 * @param {*} value CSS property value such as `10px`.
 * @return {string} Normalized style value with dimensions applied.
 */
function dangerousStyleValue(name, value, isCustomProperty) {
  // Note that we've removed escapeTextForBrowser() calls here since the
  // whole string will be escaped when the attribute is injected into
  // the markup. If you provide unsafe user data here they can inject
  // arbitrary CSS which may be problematic (I couldn't repro this):
  // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
  // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
  // This is not an XSS hole but instead a potential CSS injection issue
  // which has lead to a greater discussion about how we're going to
  // trust URLs moving forward. See #2115901

  var isEmpty = value == null || typeof value === 'boolean' || value === '';
  if (isEmpty) {
    return '';
  }

  if (!isCustomProperty && typeof value === 'number' && value !== 0 && !(isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name])) {
    return value + 'px'; // Presumes implicit 'px' suffix for unitless numbers
  }

  return ('' + value).trim();
}

var uppercasePattern = /([A-Z])/g;
var msPattern = /^ms-/;

/**
 * Hyphenates a camelcased CSS property name, for example:
 *
 *   > hyphenateStyleName('backgroundColor')
 *   < "background-color"
 *   > hyphenateStyleName('MozTransition')
 *   < "-moz-transition"
 *   > hyphenateStyleName('msTransition')
 *   < "-ms-transition"
 *
 * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
 * is converted to `-ms-`.
 */
function hyphenateStyleName(name) {
  return name.replace(uppercasePattern, '-$1').toLowerCase().replace(msPattern, '-ms-');
}

var warnValidStyle = function () {};

{
  // 'msTransform' is correct, but the other prefixes should be capitalized
  var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
  var msPattern$1 = /^-ms-/;
  var hyphenPattern = /-(.)/g;

  // style values shouldn't contain a semicolon
  var badStyleValueWithSemicolonPattern = /;\s*$/;

  var warnedStyleNames = {};
  var warnedStyleValues = {};
  var warnedForNaNValue = false;
  var warnedForInfinityValue = false;

  var camelize = function (string) {
    return string.replace(hyphenPattern, function (_, character) {
      return character.toUpperCase();
    });
  };

  var warnHyphenatedStyleName = function (name) {
    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
      return;
    }

    warnedStyleNames[name] = true;
    warning$1(false, 'Unsupported style property %s. Did you mean %s?', name,
    // As Andi Smith suggests
    // (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
    // is converted to lowercase `ms`.
    camelize(name.replace(msPattern$1, 'ms-')));
  };

  var warnBadVendoredStyleName = function (name) {
    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
      return;
    }

    warnedStyleNames[name] = true;
    warning$1(false, 'Unsupported vendor-prefixed style property %s. Did you mean %s?', name, name.charAt(0).toUpperCase() + name.slice(1));
  };

  var warnStyleValueWithSemicolon = function (name, value) {
    if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
      return;
    }

    warnedStyleValues[value] = true;
    warning$1(false, "Style property values shouldn't contain a semicolon. " + 'Try "%s: %s" instead.', name, value.replace(badStyleValueWithSemicolonPattern, ''));
  };

  var warnStyleValueIsNaN = function (name, value) {
    if (warnedForNaNValue) {
      return;
    }

    warnedForNaNValue = true;
    warning$1(false, '`NaN` is an invalid value for the `%s` css style property.', name);
  };

  var warnStyleValueIsInfinity = function (name, value) {
    if (warnedForInfinityValue) {
      return;
    }

    warnedForInfinityValue = true;
    warning$1(false, '`Infinity` is an invalid value for the `%s` css style property.', name);
  };

  warnValidStyle = function (name, value) {
    if (name.indexOf('-') > -1) {
      warnHyphenatedStyleName(name);
    } else if (badVendoredStyleNamePattern.test(name)) {
      warnBadVendoredStyleName(name);
    } else if (badStyleValueWithSemicolonPattern.test(value)) {
      warnStyleValueWithSemicolon(name, value);
    }

    if (typeof value === 'number') {
      if (isNaN(value)) {
        warnStyleValueIsNaN(name, value);
      } else if (!isFinite(value)) {
        warnStyleValueIsInfinity(name, value);
      }
    }
  };
}

var warnValidStyle$1 = warnValidStyle;

/**
 * Operations for dealing with CSS properties.
 */

/**
 * This creates a string that is expected to be equivalent to the style
 * attribute generated by server-side rendering. It by-passes warnings and
 * security checks so it's not safe to use this value for anything other than
 * comparison. It is only used in DEV for SSR validation.
 */
function createDangerousStringForStyles(styles) {
  {
    var serialized = '';
    var delimiter = '';
    for (var styleName in styles) {
      if (!styles.hasOwnProperty(styleName)) {
        continue;
      }
      var styleValue = styles[styleName];
      if (styleValue != null) {
        var isCustomProperty = styleName.indexOf('--') === 0;
        serialized += delimiter + hyphenateStyleName(styleName) + ':';
        serialized += dangerousStyleValue(styleName, styleValue, isCustomProperty);

        delimiter = ';';
      }
    }
    return serialized || null;
  }
}

/**
 * Sets the value for multiple styles on a node.  If a value is specified as
 * '' (empty string), the corresponding style property will be unset.
 *
 * @param {DOMElement} node
 * @param {object} styles
 */
function setValueForStyles(node, styles) {
  var style = node.style;
  for (var styleName in styles) {
    if (!styles.hasOwnProperty(styleName)) {
      continue;
    }
    var isCustomProperty = styleName.indexOf('--') === 0;
    {
      if (!isCustomProperty) {
        warnValidStyle$1(styleName, styles[styleName]);
      }
    }
    var styleValue = dangerousStyleValue(styleName, styles[styleName], isCustomProperty);
    if (styleName === 'float') {
      styleName = 'cssFloat';
    }
    if (isCustomProperty) {
      style.setProperty(styleName, styleValue);
    } else {
      style[styleName] = styleValue;
    }
  }
}

function isValueEmpty(value) {
  return value == null || typeof value === 'boolean' || value === '';
}

/**
 * Given {color: 'red', overflow: 'hidden'} returns {
 *   color: 'color',
 *   overflowX: 'overflow',
 *   overflowY: 'overflow',
 * }. This can be read as "the overflowY property was set by the overflow
 * shorthand". That is, the values are the property that each was derived from.
 */
function expandShorthandMap(styles) {
  var expanded = {};
  for (var key in styles) {
    var longhands = shorthandToLonghand[key] || [key];
    for (var i = 0; i < longhands.length; i++) {
      expanded[longhands[i]] = key;
    }
  }
  return expanded;
}

/**
 * When mixing shorthand and longhand property names, we warn during updates if
 * we expect an incorrect result to occur. In particular, we warn for:
 *
 * Updating a shorthand property (longhand gets overwritten):
 *   {font: 'foo', fontVariant: 'bar'} -> {font: 'baz', fontVariant: 'bar'}
 *   becomes .style.font = 'baz'
 * Removing a shorthand property (longhand gets lost too):
 *   {font: 'foo', fontVariant: 'bar'} -> {fontVariant: 'bar'}
 *   becomes .style.font = ''
 * Removing a longhand property (should revert to shorthand; doesn't):
 *   {font: 'foo', fontVariant: 'bar'} -> {font: 'foo'}
 *   becomes .style.fontVariant = ''
 */
function validateShorthandPropertyCollisionInDev(styleUpdates, nextStyles) {
  if (!warnAboutShorthandPropertyCollision) {
    return;
  }

  if (!nextStyles) {
    return;
  }

  var expandedUpdates = expandShorthandMap(styleUpdates);
  var expandedStyles = expandShorthandMap(nextStyles);
  var warnedAbout = {};
  for (var key in expandedUpdates) {
    var originalKey = expandedUpdates[key];
    var correctOriginalKey = expandedStyles[key];
    if (correctOriginalKey && originalKey !== correctOriginalKey) {
      var warningKey = originalKey + ',' + correctOriginalKey;
      if (warnedAbout[warningKey]) {
        continue;
      }
      warnedAbout[warningKey] = true;
      warning$1(false, '%s a style property during rerender (%s) when a ' + 'conflicting property is set (%s) can lead to styling bugs. To ' + "avoid this, don't mix shorthand and non-shorthand properties " + 'for the same value; instead, replace the shorthand with ' + 'separate values.', isValueEmpty(styleUpdates[originalKey]) ? 'Removing' : 'Updating', originalKey, correctOriginalKey);
    }
  }
}

// For HTML, certain tags should omit their close tag. We keep a whitelist for
// those special-case tags.

var omittedCloseTags = {
  area: true,
  base: true,
  br: true,
  col: true,
  embed: true,
  hr: true,
  img: true,
  input: true,
  keygen: true,
  link: true,
  meta: true,
  param: true,
  source: true,
  track: true,
  wbr: true
  // NOTE: menuitem's close tag should be omitted, but that causes problems.
};

// For HTML, certain tags cannot have children. This has the same purpose as
// `omittedCloseTags` except that `menuitem` should still have its closing tag.

var voidElementTags = _assign({
  menuitem: true
}, omittedCloseTags);

// TODO: We can remove this if we add invariantWithStack()
// or add stack by default to invariants where possible.
var HTML$1 = '__html';

var ReactDebugCurrentFrame$2 = null;
{
  ReactDebugCurrentFrame$2 = ReactSharedInternals.ReactDebugCurrentFrame;
}

function assertValidProps(tag, props) {
  if (!props) {
    return;
  }
  // Note the use of `==` which checks for null or undefined.
  if (voidElementTags[tag]) {
    !(props.children == null && props.dangerouslySetInnerHTML == null) ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', tag, ReactDebugCurrentFrame$2.getStackAddendum()) : void 0;
  }
  if (props.dangerouslySetInnerHTML != null) {
    !(props.children == null) ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : void 0;
    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML$1 in props.dangerouslySetInnerHTML) ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : void 0;
  }
  {
    !(props.suppressContentEditableWarning || !props.contentEditable || props.children == null) ? warning$1(false, 'A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.') : void 0;
  }
  !(props.style == null || typeof props.style === 'object') ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \'em\'}} when using JSX.%s', ReactDebugCurrentFrame$2.getStackAddendum()) : void 0;
}

function isCustomComponent(tagName, props) {
  if (tagName.indexOf('-') === -1) {
    return typeof props.is === 'string';
  }
  switch (tagName) {
    // These are reserved SVG and MathML elements.
    // We don't mind this whitelist too much because we expect it to never grow.
    // The alternative is to track the namespace in a few places which is convoluted.
    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
    case 'annotation-xml':
    case 'color-profile':
    case 'font-face':
    case 'font-face-src':
    case 'font-face-uri':
    case 'font-face-format':
    case 'font-face-name':
    case 'missing-glyph':
      return false;
    default:
      return true;
  }
}

// When adding attributes to the HTML or SVG whitelist, be sure to
// also add them to this module to ensure casing and incorrect name
// warnings.
var possibleStandardNames = {
  // HTML
  accept: 'accept',
  acceptcharset: 'acceptCharset',
  'accept-charset': 'acceptCharset',
  accesskey: 'accessKey',
  action: 'action',
  allowfullscreen: 'allowFullScreen',
  alt: 'alt',
  as: 'as',
  async: 'async',
  autocapitalize: 'autoCapitalize',
  autocomplete: 'autoComplete',
  autocorrect: 'autoCorrect',
  autofocus: 'autoFocus',
  autoplay: 'autoPlay',
  autosave: 'autoSave',
  capture: 'capture',
  cellpadding: 'cellPadding',
  cellspacing: 'cellSpacing',
  challenge: 'challenge',
  charset: 'charSet',
  checked: 'checked',
  children: 'children',
  cite: 'cite',
  class: 'className',
  classid: 'classID',
  classname: 'className',
  cols: 'cols',
  colspan: 'colSpan',
  content: 'content',
  contenteditable: 'contentEditable',
  contextmenu: 'contextMenu',
  controls: 'controls',
  controlslist: 'controlsList',
  coords: 'coords',
  crossorigin: 'crossOrigin',
  dangerouslysetinnerhtml: 'dangerouslySetInnerHTML',
  data: 'data',
  datetime: 'dateTime',
  default: 'default',
  defaultchecked: 'defaultChecked',
  defaultvalue: 'defaultValue',
  defer: 'defer',
  dir: 'dir',
  disabled: 'disabled',
  download: 'download',
  draggable: 'draggable',
  enctype: 'encType',
  for: 'htmlFor',
  form: 'form',
  formmethod: 'formMethod',
  formaction: 'formAction',
  formenctype: 'formEncType',
  formnovalidate: 'formNoValidate',
  formtarget: 'formTarget',
  frameborder: 'frameBorder',
  headers: 'headers',
  height: 'height',
  hidden: 'hidden',
  high: 'high',
  href: 'href',
  hreflang: 'hrefLang',
  htmlfor: 'htmlFor',
  httpequiv: 'httpEquiv',
  'http-equiv': 'httpEquiv',
  icon: 'icon',
  id: 'id',
  innerhtml: 'innerHTML',
  inputmode: 'inputMode',
  integrity: 'integrity',
  is: 'is',
  itemid: 'itemID',
  itemprop: 'itemProp',
  itemref: 'itemRef',
  itemscope: 'itemScope',
  itemtype: 'itemType',
  keyparams: 'keyParams',
  keytype: 'keyType',
  kind: 'kind',
  label: 'label',
  lang: 'lang',
  list: 'list',
  loop: 'loop',
  low: 'low',
  manifest: 'manifest',
  marginwidth: 'marginWidth',
  marginheight: 'marginHeight',
  max: 'max',
  maxlength: 'maxLength',
  media: 'media',
  mediagroup: 'mediaGroup',
  method: 'method',
  min: 'min',
  minlength: 'minLength',
  multiple: 'multiple',
  muted: 'muted',
  name: 'name',
  nomodule: 'noModule',
  nonce: 'nonce',
  novalidate: 'noValidate',
  open: 'open',
  optimum: 'optimum',
  pattern: 'pattern',
  placeholder: 'placeholder',
  playsinline: 'playsInline',
  poster: 'poster',
  preload: 'preload',
  profile: 'profile',
  radiogroup: 'radioGroup',
  readonly: 'readOnly',
  referrerpolicy: 'referrerPolicy',
  rel: 'rel',
  required: 'required',
  reversed: 'reversed',
  role: 'role',
  rows: 'rows',
  rowspan: 'rowSpan',
  sandbox: 'sandbox',
  scope: 'scope',
  scoped: 'scoped',
  scrolling: 'scrolling',
  seamless: 'seamless',
  selected: 'selected',
  shape: 'shape',
  size: 'size',
  sizes: 'sizes',
  span: 'span',
  spellcheck: 'spellCheck',
  src: 'src',
  srcdoc: 'srcDoc',
  srclang: 'srcLang',
  srcset: 'srcSet',
  start: 'start',
  step: 'step',
  style: 'style',
  summary: 'summary',
  tabindex: 'tabIndex',
  target: 'target',
  title: 'title',
  type: 'type',
  usemap: 'useMap',
  value: 'value',
  width: 'width',
  wmode: 'wmode',
  wrap: 'wrap',

  // SVG
  about: 'about',
  accentheight: 'accentHeight',
  'accent-height': 'accentHeight',
  accumulate: 'accumulate',
  additive: 'additive',
  alignmentbaseline: 'alignmentBaseline',
  'alignment-baseline': 'alignmentBaseline',
  allowreorder: 'allowReorder',
  alphabetic: 'alphabetic',
  amplitude: 'amplitude',
  arabicform: 'arabicForm',
  'arabic-form': 'arabicForm',
  ascent: 'ascent',
  attributename: 'attributeName',
  attributetype: 'attributeType',
  autoreverse: 'autoReverse',
  azimuth: 'azimuth',
  basefrequency: 'baseFrequency',
  baselineshift: 'baselineShift',
  'baseline-shift': 'baselineShift',
  baseprofile: 'baseProfile',
  bbox: 'bbox',
  begin: 'begin',
  bias: 'bias',
  by: 'by',
  calcmode: 'calcMode',
  capheight: 'capHeight',
  'cap-height': 'capHeight',
  clip: 'clip',
  clippath: 'clipPath',
  'clip-path': 'clipPath',
  clippathunits: 'clipPathUnits',
  cliprule: 'clipRule',
  'clip-rule': 'clipRule',
  color: 'color',
  colorinterpolation: 'colorInterpolation',
  'color-interpolation': 'colorInterpolation',
  colorinterpolationfilters: 'colorInterpolationFilters',
  'color-interpolation-filters': 'colorInterpolationFilters',
  colorprofile: 'colorProfile',
  'color-profile': 'colorProfile',
  colorrendering: 'colorRendering',
  'color-rendering': 'colorRendering',
  contentscripttype: 'contentScriptType',
  contentstyletype: 'contentStyleType',
  cursor: 'cursor',
  cx: 'cx',
  cy: 'cy',
  d: 'd',
  datatype: 'datatype',
  decelerate: 'decelerate',
  descent: 'descent',
  diffuseconstant: 'diffuseConstant',
  direction: 'direction',
  display: 'display',
  divisor: 'divisor',
  dominantbaseline: 'dominantBaseline',
  'dominant-baseline': 'dominantBaseline',
  dur: 'dur',
  dx: 'dx',
  dy: 'dy',
  edgemode: 'edgeMode',
  elevation: 'elevation',
  enablebackground: 'enableBackground',
  'enable-background': 'enableBackground',
  end: 'end',
  exponent: 'exponent',
  externalresourcesrequired: 'externalResourcesRequired',
  fill: 'fill',
  fillopacity: 'fillOpacity',
  'fill-opacity': 'fillOpacity',
  fillrule: 'fillRule',
  'fill-rule': 'fillRule',
  filter: 'filter',
  filterres: 'filterRes',
  filterunits: 'filterUnits',
  floodopacity: 'floodOpacity',
  'flood-opacity': 'floodOpacity',
  floodcolor: 'floodColor',
  'flood-color': 'floodColor',
  focusable: 'focusable',
  fontfamily: 'fontFamily',
  'font-family': 'fontFamily',
  fontsize: 'fontSize',
  'font-size': 'fontSize',
  fontsizeadjust: 'fontSizeAdjust',
  'font-size-adjust': 'fontSizeAdjust',
  fontstretch: 'fontStretch',
  'font-stretch': 'fontStretch',
  fontstyle: 'fontStyle',
  'font-style': 'fontStyle',
  fontvariant: 'fontVariant',
  'font-variant': 'fontVariant',
  fontweight: 'fontWeight',
  'font-weight': 'fontWeight',
  format: 'format',
  from: 'from',
  fx: 'fx',
  fy: 'fy',
  g1: 'g1',
  g2: 'g2',
  glyphname: 'glyphName',
  'glyph-name': 'glyphName',
  glyphorientationhorizontal: 'glyphOrientationHorizontal',
  'glyph-orientation-horizontal': 'glyphOrientationHorizontal',
  glyphorientationvertical: 'glyphOrientationVertical',
  'glyph-orientation-vertical': 'glyphOrientationVertical',
  glyphref: 'glyphRef',
  gradienttransform: 'gradientTransform',
  gradientunits: 'gradientUnits',
  hanging: 'hanging',
  horizadvx: 'horizAdvX',
  'horiz-adv-x': 'horizAdvX',
  horizoriginx: 'horizOriginX',
  'horiz-origin-x': 'horizOriginX',
  ideographic: 'ideographic',
  imagerendering: 'imageRendering',
  'image-rendering': 'imageRendering',
  in2: 'in2',
  in: 'in',
  inlist: 'inlist',
  intercept: 'intercept',
  k1: 'k1',
  k2: 'k2',
  k3: 'k3',
  k4: 'k4',
  k: 'k',
  kernelmatrix: 'kernelMatrix',
  kernelunitlength: 'kernelUnitLength',
  kerning: 'kerning',
  keypoints: 'keyPoints',
  keysplines: 'keySplines',
  keytimes: 'keyTimes',
  lengthadjust: 'lengthAdjust',
  letterspacing: 'letterSpacing',
  'letter-spacing': 'letterSpacing',
  lightingcolor: 'lightingColor',
  'lighting-color': 'lightingColor',
  limitingconeangle: 'limitingConeAngle',
  local: 'local',
  markerend: 'markerEnd',
  'marker-end': 'markerEnd',
  markerheight: 'markerHeight',
  markermid: 'markerMid',
  'marker-mid': 'markerMid',
  markerstart: 'markerStart',
  'marker-start': 'markerStart',
  markerunits: 'markerUnits',
  markerwidth: 'markerWidth',
  mask: 'mask',
  maskcontentunits: 'maskContentUnits',
  maskunits: 'maskUnits',
  mathematical: 'mathematical',
  mode: 'mode',
  numoctaves: 'numOctaves',
  offset: 'offset',
  opacity: 'opacity',
  operator: 'operator',
  order: 'order',
  orient: 'orient',
  orientation: 'orientation',
  origin: 'origin',
  overflow: 'overflow',
  overlineposition: 'overlinePosition',
  'overline-position': 'overlinePosition',
  overlinethickness: 'overlineThickness',
  'overline-thickness': 'overlineThickness',
  paintorder: 'paintOrder',
  'paint-order': 'paintOrder',
  panose1: 'panose1',
  'panose-1': 'panose1',
  pathlength: 'pathLength',
  patterncontentunits: 'patternContentUnits',
  patterntransform: 'patternTransform',
  patternunits: 'patternUnits',
  pointerevents: 'pointerEvents',
  'pointer-events': 'pointerEvents',
  points: 'points',
  pointsatx: 'pointsAtX',
  pointsaty: 'pointsAtY',
  pointsatz: 'pointsAtZ',
  prefix: 'prefix',
  preservealpha: 'preserveAlpha',
  preserveaspectratio: 'preserveAspectRatio',
  primitiveunits: 'primitiveUnits',
  property: 'property',
  r: 'r',
  radius: 'radius',
  refx: 'refX',
  refy: 'refY',
  renderingintent: 'renderingIntent',
  'rendering-intent': 'renderingIntent',
  repeatcount: 'repeatCount',
  repeatdur: 'repeatDur',
  requiredextensions: 'requiredExtensions',
  requiredfeatures: 'requiredFeatures',
  resource: 'resource',
  restart: 'restart',
  result: 'result',
  results: 'results',
  rotate: 'rotate',
  rx: 'rx',
  ry: 'ry',
  scale: 'scale',
  security: 'security',
  seed: 'seed',
  shaperendering: 'shapeRendering',
  'shape-rendering': 'shapeRendering',
  slope: 'slope',
  spacing: 'spacing',
  specularconstant: 'specularConstant',
  specularexponent: 'specularExponent',
  speed: 'speed',
  spreadmethod: 'spreadMethod',
  startoffset: 'startOffset',
  stddeviation: 'stdDeviation',
  stemh: 'stemh',
  stemv: 'stemv',
  stitchtiles: 'stitchTiles',
  stopcolor: 'stopColor',
  'stop-color': 'stopColor',
  stopopacity: 'stopOpacity',
  'stop-opacity': 'stopOpacity',
  strikethroughposition: 'strikethroughPosition',
  'strikethrough-position': 'strikethroughPosition',
  strikethroughthickness: 'strikethroughThickness',
  'strikethrough-thickness': 'strikethroughThickness',
  string: 'string',
  stroke: 'stroke',
  strokedasharray: 'strokeDasharray',
  'stroke-dasharray': 'strokeDasharray',
  strokedashoffset: 'strokeDashoffset',
  'stroke-dashoffset': 'strokeDashoffset',
  strokelinecap: 'strokeLinecap',
  'stroke-linecap': 'strokeLinecap',
  strokelinejoin: 'strokeLinejoin',
  'stroke-linejoin': 'strokeLinejoin',
  strokemiterlimit: 'strokeMiterlimit',
  'stroke-miterlimit': 'strokeMiterlimit',
  strokewidth: 'strokeWidth',
  'stroke-width': 'strokeWidth',
  strokeopacity: 'strokeOpacity',
  'stroke-opacity': 'strokeOpacity',
  suppresscontenteditablewarning: 'suppressContentEditableWarning',
  suppresshydrationwarning: 'suppressHydrationWarning',
  surfacescale: 'surfaceScale',
  systemlanguage: 'systemLanguage',
  tablevalues: 'tableValues',
  targetx: 'targetX',
  targety: 'targetY',
  textanchor: 'textAnchor',
  'text-anchor': 'textAnchor',
  textdecoration: 'textDecoration',
  'text-decoration': 'textDecoration',
  textlength: 'textLength',
  textrendering: 'textRendering',
  'text-rendering': 'textRendering',
  to: 'to',
  transform: 'transform',
  typeof: 'typeof',
  u1: 'u1',
  u2: 'u2',
  underlineposition: 'underlinePosition',
  'underline-position': 'underlinePosition',
  underlinethickness: 'underlineThickness',
  'underline-thickness': 'underlineThickness',
  unicode: 'unicode',
  unicodebidi: 'unicodeBidi',
  'unicode-bidi': 'unicodeBidi',
  unicoderange: 'unicodeRange',
  'unicode-range': 'unicodeRange',
  unitsperem: 'unitsPerEm',
  'units-per-em': 'unitsPerEm',
  unselectable: 'unselectable',
  valphabetic: 'vAlphabetic',
  'v-alphabetic': 'vAlphabetic',
  values: 'values',
  vectoreffect: 'vectorEffect',
  'vector-effect': 'vectorEffect',
  version: 'version',
  vertadvy: 'vertAdvY',
  'vert-adv-y': 'vertAdvY',
  vertoriginx: 'vertOriginX',
  'vert-origin-x': 'vertOriginX',
  vertoriginy: 'vertOriginY',
  'vert-origin-y': 'vertOriginY',
  vhanging: 'vHanging',
  'v-hanging': 'vHanging',
  videographic: 'vIdeographic',
  'v-ideographic': 'vIdeographic',
  viewbox: 'viewBox',
  viewtarget: 'viewTarget',
  visibility: 'visibility',
  vmathematical: 'vMathematical',
  'v-mathematical': 'vMathematical',
  vocab: 'vocab',
  widths: 'widths',
  wordspacing: 'wordSpacing',
  'word-spacing': 'wordSpacing',
  writingmode: 'writingMode',
  'writing-mode': 'writingMode',
  x1: 'x1',
  x2: 'x2',
  x: 'x',
  xchannelselector: 'xChannelSelector',
  xheight: 'xHeight',
  'x-height': 'xHeight',
  xlinkactuate: 'xlinkActuate',
  'xlink:actuate': 'xlinkActuate',
  xlinkarcrole: 'xlinkArcrole',
  'xlink:arcrole': 'xlinkArcrole',
  xlinkhref: 'xlinkHref',
  'xlink:href': 'xlinkHref',
  xlinkrole: 'xlinkRole',
  'xlink:role': 'xlinkRole',
  xlinkshow: 'xlinkShow',
  'xlink:show': 'xlinkShow',
  xlinktitle: 'xlinkTitle',
  'xlink:title': 'xlinkTitle',
  xlinktype: 'xlinkType',
  'xlink:type': 'xlinkType',
  xmlbase: 'xmlBase',
  'xml:base': 'xmlBase',
  xmllang: 'xmlLang',
  'xml:lang': 'xmlLang',
  xmlns: 'xmlns',
  'xml:space': 'xmlSpace',
  xmlnsxlink: 'xmlnsXlink',
  'xmlns:xlink': 'xmlnsXlink',
  xmlspace: 'xmlSpace',
  y1: 'y1',
  y2: 'y2',
  y: 'y',
  ychannelselector: 'yChannelSelector',
  z: 'z',
  zoomandpan: 'zoomAndPan'
};

var ariaProperties = {
  'aria-current': 0, // state
  'aria-details': 0,
  'aria-disabled': 0, // state
  'aria-hidden': 0, // state
  'aria-invalid': 0, // state
  'aria-keyshortcuts': 0,
  'aria-label': 0,
  'aria-roledescription': 0,
  // Widget Attributes
  'aria-autocomplete': 0,
  'aria-checked': 0,
  'aria-expanded': 0,
  'aria-haspopup': 0,
  'aria-level': 0,
  'aria-modal': 0,
  'aria-multiline': 0,
  'aria-multiselectable': 0,
  'aria-orientation': 0,
  'aria-placeholder': 0,
  'aria-pressed': 0,
  'aria-readonly': 0,
  'aria-required': 0,
  'aria-selected': 0,
  'aria-sort': 0,
  'aria-valuemax': 0,
  'aria-valuemin': 0,
  'aria-valuenow': 0,
  'aria-valuetext': 0,
  // Live Region Attributes
  'aria-atomic': 0,
  'aria-busy': 0,
  'aria-live': 0,
  'aria-relevant': 0,
  // Drag-and-Drop Attributes
  'aria-dropeffect': 0,
  'aria-grabbed': 0,
  // Relationship Attributes
  'aria-activedescendant': 0,
  'aria-colcount': 0,
  'aria-colindex': 0,
  'aria-colspan': 0,
  'aria-controls': 0,
  'aria-describedby': 0,
  'aria-errormessage': 0,
  'aria-flowto': 0,
  'aria-labelledby': 0,
  'aria-owns': 0,
  'aria-posinset': 0,
  'aria-rowcount': 0,
  'aria-rowindex': 0,
  'aria-rowspan': 0,
  'aria-setsize': 0
};

var warnedProperties = {};
var rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
var rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');

var hasOwnProperty$2 = Object.prototype.hasOwnProperty;

function validateProperty(tagName, name) {
  if (hasOwnProperty$2.call(warnedProperties, name) && warnedProperties[name]) {
    return true;
  }

  if (rARIACamel.test(name)) {
    var ariaName = 'aria-' + name.slice(4).toLowerCase();
    var correctName = ariaProperties.hasOwnProperty(ariaName) ? ariaName : null;

    // If this is an aria-* attribute, but is not listed in the known DOM
    // DOM properties, then it is an invalid aria-* attribute.
    if (correctName == null) {
      warning$1(false, 'Invalid ARIA attribute `%s`. ARIA attributes follow the pattern aria-* and must be lowercase.', name);
      warnedProperties[name] = true;
      return true;
    }
    // aria-* attributes should be lowercase; suggest the lowercase version.
    if (name !== correctName) {
      warning$1(false, 'Invalid ARIA attribute `%s`. Did you mean `%s`?', name, correctName);
      warnedProperties[name] = true;
      return true;
    }
  }

  if (rARIA.test(name)) {
    var lowerCasedName = name.toLowerCase();
    var standardName = ariaProperties.hasOwnProperty(lowerCasedName) ? lowerCasedName : null;

    // If this is an aria-* attribute, but is not listed in the known DOM
    // DOM properties, then it is an invalid aria-* attribute.
    if (standardName == null) {
      warnedProperties[name] = true;
      return false;
    }
    // aria-* attributes should be lowercase; suggest the lowercase version.
    if (name !== standardName) {
      warning$1(false, 'Unknown ARIA attribute `%s`. Did you mean `%s`?', name, standardName);
      warnedProperties[name] = true;
      return true;
    }
  }

  return true;
}

function warnInvalidARIAProps(type, props) {
  var invalidProps = [];

  for (var key in props) {
    var isValid = validateProperty(type, key);
    if (!isValid) {
      invalidProps.push(key);
    }
  }

  var unknownPropString = invalidProps.map(function (prop) {
    return '`' + prop + '`';
  }).join(', ');

  if (invalidProps.length === 1) {
    warning$1(false, 'Invalid aria prop %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
  } else if (invalidProps.length > 1) {
    warning$1(false, 'Invalid aria props %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
  }
}

function validateProperties(type, props) {
  if (isCustomComponent(type, props)) {
    return;
  }
  warnInvalidARIAProps(type, props);
}

var didWarnValueNull = false;

function validateProperties$1(type, props) {
  if (type !== 'input' && type !== 'textarea' && type !== 'select') {
    return;
  }

  if (props != null && props.value === null && !didWarnValueNull) {
    didWarnValueNull = true;
    if (type === 'select' && props.multiple) {
      warning$1(false, '`value` prop on `%s` should not be null. ' + 'Consider using an empty array when `multiple` is set to `true` ' + 'to clear the component or `undefined` for uncontrolled components.', type);
    } else {
      warning$1(false, '`value` prop on `%s` should not be null. ' + 'Consider using an empty string to clear the component or `undefined` ' + 'for uncontrolled components.', type);
    }
  }
}

var validateProperty$1 = function () {};

{
  var warnedProperties$1 = {};
  var _hasOwnProperty = Object.prototype.hasOwnProperty;
  var EVENT_NAME_REGEX = /^on./;
  var INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
  var rARIA$1 = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
  var rARIACamel$1 = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');

  validateProperty$1 = function (tagName, name, value, canUseEventSystem) {
    if (_hasOwnProperty.call(warnedProperties$1, name) && warnedProperties$1[name]) {
      return true;
    }

    var lowerCasedName = name.toLowerCase();
    if (lowerCasedName === 'onfocusin' || lowerCasedName === 'onfocusout') {
      warning$1(false, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.');
      warnedProperties$1[name] = true;
      return true;
    }

    // We can't rely on the event system being injected on the server.
    if (canUseEventSystem) {
      if (registrationNameModules.hasOwnProperty(name)) {
        return true;
      }
      var registrationName = possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? possibleRegistrationNames[lowerCasedName] : null;
      if (registrationName != null) {
        warning$1(false, 'Invalid event handler property `%s`. Did you mean `%s`?', name, registrationName);
        warnedProperties$1[name] = true;
        return true;
      }
      if (EVENT_NAME_REGEX.test(name)) {
        warning$1(false, 'Unknown event handler property `%s`. It will be ignored.', name);
        warnedProperties$1[name] = true;
        return true;
      }
    } else if (EVENT_NAME_REGEX.test(name)) {
      // If no event plugins have been injected, we are in a server environment.
      // So we can't tell if the event name is correct for sure, but we can filter
      // out known bad ones like `onclick`. We can't suggest a specific replacement though.
      if (INVALID_EVENT_NAME_REGEX.test(name)) {
        warning$1(false, 'Invalid event handler property `%s`. ' + 'React events use the camelCase naming convention, for example `onClick`.', name);
      }
      warnedProperties$1[name] = true;
      return true;
    }

    // Let the ARIA attribute hook validate ARIA attributes
    if (rARIA$1.test(name) || rARIACamel$1.test(name)) {
      return true;
    }

    if (lowerCasedName === 'innerhtml') {
      warning$1(false, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.');
      warnedProperties$1[name] = true;
      return true;
    }

    if (lowerCasedName === 'aria') {
      warning$1(false, 'The `aria` attribute is reserved for future use in React. ' + 'Pass individual `aria-` attributes instead.');
      warnedProperties$1[name] = true;
      return true;
    }

    if (lowerCasedName === 'is' && value !== null && value !== undefined && typeof value !== 'string') {
      warning$1(false, 'Received a `%s` for a string attribute `is`. If this is expected, cast ' + 'the value to a string.', typeof value);
      warnedProperties$1[name] = true;
      return true;
    }

    if (typeof value === 'number' && isNaN(value)) {
      warning$1(false, 'Received NaN for the `%s` attribute. If this is expected, cast ' + 'the value to a string.', name);
      warnedProperties$1[name] = true;
      return true;
    }

    var propertyInfo = getPropertyInfo(name);
    var isReserved = propertyInfo !== null && propertyInfo.type === RESERVED;

    // Known attributes should match the casing specified in the property config.
    if (possibleStandardNames.hasOwnProperty(lowerCasedName)) {
      var standardName = possibleStandardNames[lowerCasedName];
      if (standardName !== name) {
        warning$1(false, 'Invalid DOM property `%s`. Did you mean `%s`?', name, standardName);
        warnedProperties$1[name] = true;
        return true;
      }
    } else if (!isReserved && name !== lowerCasedName) {
      // Unknown attributes should have lowercase casing since that's how they
      // will be cased anyway with server rendering.
      warning$1(false, 'React does not recognize the `%s` prop on a DOM element. If you ' + 'intentionally want it to appear in the DOM as a custom ' + 'attribute, spell it as lowercase `%s` instead. ' + 'If you accidentally passed it from a parent component, remove ' + 'it from the DOM element.', name, lowerCasedName);
      warnedProperties$1[name] = true;
      return true;
    }

    if (typeof value === 'boolean' && shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
      if (value) {
        warning$1(false, 'Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.', value, name, name, value, name);
      } else {
        warning$1(false, 'Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', value, name, name, value, name, name, name);
      }
      warnedProperties$1[name] = true;
      return true;
    }

    // Now that we've validated casing, do not validate
    // data types for reserved props
    if (isReserved) {
      return true;
    }

    // Warn when a known attribute is a bad type
    if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
      warnedProperties$1[name] = true;
      return false;
    }

    // Warn when passing the strings 'false' or 'true' into a boolean prop
    if ((value === 'false' || value === 'true') && propertyInfo !== null && propertyInfo.type === BOOLEAN) {
      warning$1(false, 'Received the string `%s` for the boolean attribute `%s`. ' + '%s ' + 'Did you mean %s={%s}?', value, name, value === 'false' ? 'The browser will interpret it as a truthy value.' : 'Although this works, it will not work as expected if you pass the string "false".', name, value);
      warnedProperties$1[name] = true;
      return true;
    }

    return true;
  };
}

var warnUnknownProperties = function (type, props, canUseEventSystem) {
  var unknownProps = [];
  for (var key in props) {
    var isValid = validateProperty$1(type, key, props[key], canUseEventSystem);
    if (!isValid) {
      unknownProps.push(key);
    }
  }

  var unknownPropString = unknownProps.map(function (prop) {
    return '`' + prop + '`';
  }).join(', ');
  if (unknownProps.length === 1) {
    warning$1(false, 'Invalid value for prop %s on <%s> tag. Either remove it from the element, ' + 'or pass a string or number value to keep it in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
  } else if (unknownProps.length > 1) {
    warning$1(false, 'Invalid values for props %s on <%s> tag. Either remove them from the element, ' + 'or pass a string or number value to keep them in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
  }
};

function validateProperties$2(type, props, canUseEventSystem) {
  if (isCustomComponent(type, props)) {
    return;
  }
  warnUnknownProperties(type, props, canUseEventSystem);
}

// TODO: direct imports like some-package/src/* are bad. Fix me.
var didWarnInvalidHydration = false;
var didWarnShadyDOM = false;

var DANGEROUSLY_SET_INNER_HTML = 'dangerouslySetInnerHTML';
var SUPPRESS_CONTENT_EDITABLE_WARNING = 'suppressContentEditableWarning';
var SUPPRESS_HYDRATION_WARNING$1 = 'suppressHydrationWarning';
var AUTOFOCUS = 'autoFocus';
var CHILDREN = 'children';
var STYLE$1 = 'style';
var HTML = '__html';

var HTML_NAMESPACE = Namespaces.html;


var warnedUnknownTags = void 0;
var suppressHydrationWarning = void 0;

var validatePropertiesInDevelopment = void 0;
var warnForTextDifference = void 0;
var warnForPropDifference = void 0;
var warnForExtraAttributes = void 0;
var warnForInvalidEventListener = void 0;
var canDiffStyleForHydrationWarning = void 0;

var normalizeMarkupForTextOrAttribute = void 0;
var normalizeHTML = void 0;

{
  warnedUnknownTags = {
    // Chrome is the only major browser not shipping <time>. But as of July
    // 2017 it intends to ship it due to widespread usage. We intentionally
    // *don't* warn for <time> even if it's unrecognized by Chrome because
    // it soon will be, and many apps have been using it anyway.
    time: true,
    // There are working polyfills for <dialog>. Let people use it.
    dialog: true,
    // Electron ships a custom <webview> tag to display external web content in
    // an isolated frame and process.
    // This tag is not present in non Electron environments such as JSDom which
    // is often used for testing purposes.
    // @see https://electronjs.org/docs/api/webview-tag
    webview: true
  };

  validatePropertiesInDevelopment = function (type, props) {
    validateProperties(type, props);
    validateProperties$1(type, props);
    validateProperties$2(type, props, /* canUseEventSystem */true);
  };

  // IE 11 parses & normalizes the style attribute as opposed to other
  // browsers. It adds spaces and sorts the properties in some
  // non-alphabetical order. Handling that would require sorting CSS
  // properties in the client & server versions or applying
  // `expectedStyle` to a temporary DOM node to read its `style` attribute
  // normalized. Since it only affects IE, we're skipping style warnings
  // in that browser completely in favor of doing all that work.
  // See https://github.com/facebook/react/issues/11807
  canDiffStyleForHydrationWarning = canUseDOM && !document.documentMode;

  // HTML parsing normalizes CR and CRLF to LF.
  // It also can turn \u0000 into \uFFFD inside attributes.
  // https://www.w3.org/TR/html5/single-page.html#preprocessing-the-input-stream
  // If we have a mismatch, it might be caused by that.
  // We will still patch up in this case but not fire the warning.
  var NORMALIZE_NEWLINES_REGEX = /\r\n?/g;
  var NORMALIZE_NULL_AND_REPLACEMENT_REGEX = /\u0000|\uFFFD/g;

  normalizeMarkupForTextOrAttribute = function (markup) {
    var markupString = typeof markup === 'string' ? markup : '' + markup;
    return markupString.replace(NORMALIZE_NEWLINES_REGEX, '\n').replace(NORMALIZE_NULL_AND_REPLACEMENT_REGEX, '');
  };

  warnForTextDifference = function (serverText, clientText) {
    if (didWarnInvalidHydration) {
      return;
    }
    var normalizedClientText = normalizeMarkupForTextOrAttribute(clientText);
    var normalizedServerText = normalizeMarkupForTextOrAttribute(serverText);
    if (normalizedServerText === normalizedClientText) {
      return;
    }
    didWarnInvalidHydration = true;
    warningWithoutStack$1(false, 'Text content did not match. Server: "%s" Client: "%s"', normalizedServerText, normalizedClientText);
  };

  warnForPropDifference = function (propName, serverValue, clientValue) {
    if (didWarnInvalidHydration) {
      return;
    }
    var normalizedClientValue = normalizeMarkupForTextOrAttribute(clientValue);
    var normalizedServerValue = normalizeMarkupForTextOrAttribute(serverValue);
    if (normalizedServerValue === normalizedClientValue) {
      return;
    }
    didWarnInvalidHydration = true;
    warningWithoutStack$1(false, 'Prop `%s` did not match. Server: %s Client: %s', propName, JSON.stringify(normalizedServerValue), JSON.stringify(normalizedClientValue));
  };

  warnForExtraAttributes = function (attributeNames) {
    if (didWarnInvalidHydration) {
      return;
    }
    didWarnInvalidHydration = true;
    var names = [];
    attributeNames.forEach(function (name) {
      names.push(name);
    });
    warningWithoutStack$1(false, 'Extra attributes from the server: %s', names);
  };

  warnForInvalidEventListener = function (registrationName, listener) {
    if (listener === false) {
      warning$1(false, 'Expected `%s` listener to be a function, instead got `false`.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', registrationName, registrationName, registrationName);
    } else {
      warning$1(false, 'Expected `%s` listener to be a function, instead got a value of `%s` type.', registrationName, typeof listener);
    }
  };

  // Parse the HTML and read it back to normalize the HTML string so that it
  // can be used for comparison.
  normalizeHTML = function (parent, html) {
    // We could have created a separate document here to avoid
    // re-initializing custom elements if they exist. But this breaks
    // how <noscript> is being handled. So we use the same document.
    // See the discussion in https://github.com/facebook/react/pull/11157.
    var testElement = parent.namespaceURI === HTML_NAMESPACE ? parent.ownerDocument.createElement(parent.tagName) : parent.ownerDocument.createElementNS(parent.namespaceURI, parent.tagName);
    testElement.innerHTML = html;
    return testElement.innerHTML;
  };
}

function ensureListeningTo(rootContainerElement, registrationName) {
  var isDocumentOrFragment = rootContainerElement.nodeType === DOCUMENT_NODE || rootContainerElement.nodeType === DOCUMENT_FRAGMENT_NODE;
  var doc = isDocumentOrFragment ? rootContainerElement : rootContainerElement.ownerDocument;
  listenTo(registrationName, doc);
}

function getOwnerDocumentFromRootContainer(rootContainerElement) {
  return rootContainerElement.nodeType === DOCUMENT_NODE ? rootContainerElement : rootContainerElement.ownerDocument;
}

function noop() {}

function trapClickOnNonInteractiveElement(node) {
  // Mobile Safari does not fire properly bubble click events on
  // non-interactive elements, which means delegated click listeners do not
  // fire. The workaround for this bug involves attaching an empty click
  // listener on the target node.
  // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
  // Just set it using the onclick property so that we don't have to manage any
  // bookkeeping for it. Not sure if we need to clear it when the listener is
  // removed.
  // TODO: Only do this for the relevant Safaris maybe?
  node.onclick = noop;
}

function setInitialDOMProperties(tag, domElement, rootContainerElement, nextProps, isCustomComponentTag) {
  for (var propKey in nextProps) {
    if (!nextProps.hasOwnProperty(propKey)) {
      continue;
    }
    var nextProp = nextProps[propKey];
    if (propKey === STYLE$1) {
      {
        if (nextProp) {
          // Freeze the next style object so that we can assume it won't be
          // mutated. We have already warned for this in the past.
          Object.freeze(nextProp);
        }
      }
      // Relies on `updateStylesByID` not mutating `styleUpdates`.
      setValueForStyles(domElement, nextProp);
    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
      var nextHtml = nextProp ? nextProp[HTML] : undefined;
      if (nextHtml != null) {
        setInnerHTML(domElement, nextHtml);
      }
    } else if (propKey === CHILDREN) {
      if (typeof nextProp === 'string') {
        // Avoid setting initial textContent when the text is empty. In IE11 setting
        // textContent on a <textarea> will cause the placeholder to not
        // show within the <textarea> until it has been focused and blurred again.
        // https://github.com/facebook/react/issues/6731#issuecomment-254874553
        var canSetTextContent = tag !== 'textarea' || nextProp !== '';
        if (canSetTextContent) {
          setTextContent(domElement, nextProp);
        }
      } else if (typeof nextProp === 'number') {
        setTextContent(domElement, '' + nextProp);
      }
    } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING$1) {
      // Noop
    } else if (propKey === AUTOFOCUS) {
      // We polyfill it separately on the client during commit.
      // We could have excluded it in the property list instead of
      // adding a special case here, but then it wouldn't be emitted
      // on server rendering (but we *do* want to emit it in SSR).
    } else if (registrationNameModules.hasOwnProperty(propKey)) {
      if (nextProp != null) {
        if (true && typeof nextProp !== 'function') {
          warnForInvalidEventListener(propKey, nextProp);
        }
        ensureListeningTo(rootContainerElement, propKey);
      }
    } else if (nextProp != null) {
      setValueForProperty(domElement, propKey, nextProp, isCustomComponentTag);
    }
  }
}

function updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag) {
  // TODO: Handle wasCustomComponentTag
  for (var i = 0; i < updatePayload.length; i += 2) {
    var propKey = updatePayload[i];
    var propValue = updatePayload[i + 1];
    if (propKey === STYLE$1) {
      setValueForStyles(domElement, propValue);
    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
      setInnerHTML(domElement, propValue);
    } else if (propKey === CHILDREN) {
      setTextContent(domElement, propValue);
    } else {
      setValueForProperty(domElement, propKey, propValue, isCustomComponentTag);
    }
  }
}

function createElement(type, props, rootContainerElement, parentNamespace) {
  var isCustomComponentTag = void 0;

  // We create tags in the namespace of their parent container, except HTML
  // tags get no namespace.
  var ownerDocument = getOwnerDocumentFromRootContainer(rootContainerElement);
  var domElement = void 0;
  var namespaceURI = parentNamespace;
  if (namespaceURI === HTML_NAMESPACE) {
    namespaceURI = getIntrinsicNamespace(type);
  }
  if (namespaceURI === HTML_NAMESPACE) {
    {
      isCustomComponentTag = isCustomComponent(type, props);
      // Should this check be gated by parent namespace? Not sure we want to
      // allow <SVG> or <mATH>.
      !(isCustomComponentTag || type === type.toLowerCase()) ? warning$1(false, '<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', type) : void 0;
    }

    if (type === 'script') {
      // Create the script via .innerHTML so its "parser-inserted" flag is
      // set to true and it does not execute
      var div = ownerDocument.createElement('div');
      div.innerHTML = '<script><' + '/script>'; // eslint-disable-line
      // This is guaranteed to yield a script element.
      var firstChild = div.firstChild;
      domElement = div.removeChild(firstChild);
    } else if (typeof props.is === 'string') {
      // $FlowIssue `createElement` should be updated for Web Components
      domElement = ownerDocument.createElement(type, { is: props.is });
    } else {
      // Separate else branch instead of using `props.is || undefined` above because of a Firefox bug.
      // See discussion in https://github.com/facebook/react/pull/6896
      // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240
      domElement = ownerDocument.createElement(type);
      // Normally attributes are assigned in `setInitialDOMProperties`, however the `multiple`
      // attribute on `select`s needs to be added before `option`s are inserted. This prevents
      // a bug where the `select` does not scroll to the correct option because singular
      // `select` elements automatically pick the first item.
      // See https://github.com/facebook/react/issues/13222
      if (type === 'select' && props.multiple) {
        var node = domElement;
        node.multiple = true;
      }
    }
  } else {
    domElement = ownerDocument.createElementNS(namespaceURI, type);
  }

  {
    if (namespaceURI === HTML_NAMESPACE) {
      if (!isCustomComponentTag && Object.prototype.toString.call(domElement) === '[object HTMLUnknownElement]' && !Object.prototype.hasOwnProperty.call(warnedUnknownTags, type)) {
        warnedUnknownTags[type] = true;
        warning$1(false, 'The tag <%s> is unrecognized in this browser. ' + 'If you meant to render a React component, start its name with ' + 'an uppercase letter.', type);
      }
    }
  }

  return domElement;
}

function createTextNode(text, rootContainerElement) {
  return getOwnerDocumentFromRootContainer(rootContainerElement).createTextNode(text);
}

function setInitialProperties(domElement, tag, rawProps, rootContainerElement) {
  var isCustomComponentTag = isCustomComponent(tag, rawProps);
  {
    validatePropertiesInDevelopment(tag, rawProps);
    if (isCustomComponentTag && !didWarnShadyDOM && domElement.shadyRoot) {
      warning$1(false, '%s is using shady DOM. Using shady DOM with React can ' + 'cause things to break subtly.', getCurrentFiberOwnerNameInDevOrNull() || 'A component');
      didWarnShadyDOM = true;
    }
  }

  // TODO: Make sure that we check isMounted before firing any of these events.
  var props = void 0;
  switch (tag) {
    case 'iframe':
    case 'object':
      trapBubbledEvent(TOP_LOAD, domElement);
      props = rawProps;
      break;
    case 'video':
    case 'audio':
      // Create listener for each media event
      for (var i = 0; i < mediaEventTypes.length; i++) {
        trapBubbledEvent(mediaEventTypes[i], domElement);
      }
      props = rawProps;
      break;
    case 'source':
      trapBubbledEvent(TOP_ERROR, domElement);
      props = rawProps;
      break;
    case 'img':
    case 'image':
    case 'link':
      trapBubbledEvent(TOP_ERROR, domElement);
      trapBubbledEvent(TOP_LOAD, domElement);
      props = rawProps;
      break;
    case 'form':
      trapBubbledEvent(TOP_RESET, domElement);
      trapBubbledEvent(TOP_SUBMIT, domElement);
      props = rawProps;
      break;
    case 'details':
      trapBubbledEvent(TOP_TOGGLE, domElement);
      props = rawProps;
      break;
    case 'input':
      initWrapperState(domElement, rawProps);
      props = getHostProps(domElement, rawProps);
      trapBubbledEvent(TOP_INVALID, domElement);
      // For controlled components we always need to ensure we're listening
      // to onChange. Even if there is no listener.
      ensureListeningTo(rootContainerElement, 'onChange');
      break;
    case 'option':
      validateProps(domElement, rawProps);
      props = getHostProps$1(domElement, rawProps);
      break;
    case 'select':
      initWrapperState$1(domElement, rawProps);
      props = getHostProps$2(domElement, rawProps);
      trapBubbledEvent(TOP_INVALID, domElement);
      // For controlled components we always need to ensure we're listening
      // to onChange. Even if there is no listener.
      ensureListeningTo(rootContainerElement, 'onChange');
      break;
    case 'textarea':
      initWrapperState$2(domElement, rawProps);
      props = getHostProps$3(domElement, rawProps);
      trapBubbledEvent(TOP_INVALID, domElement);
      // For controlled components we always need to ensure we're listening
      // to onChange. Even if there is no listener.
      ensureListeningTo(rootContainerElement, 'onChange');
      break;
    default:
      props = rawProps;
  }

  assertValidProps(tag, props);

  setInitialDOMProperties(tag, domElement, rootContainerElement, props, isCustomComponentTag);

  switch (tag) {
    case 'input':
      // TODO: Make sure we check if this is still unmounted or do any clean
      // up necessary since we never stop tracking anymore.
      track(domElement);
      postMountWrapper(domElement, rawProps, false);
      break;
    case 'textarea':
      // TODO: Make sure we check if this is still unmounted or do any clean
      // up necessary since we never stop tracking anymore.
      track(domElement);
      postMountWrapper$3(domElement, rawProps);
      break;
    case 'option':
      postMountWrapper$1(domElement, rawProps);
      break;
    case 'select':
      postMountWrapper$2(domElement, rawProps);
      break;
    default:
      if (typeof props.onClick === 'function') {
        // TODO: This cast may not be sound for SVG, MathML or custom elements.
        trapClickOnNonInteractiveElement(domElement);
      }
      break;
  }
}

// Calculate the diff between the two objects.
function diffProperties(domElement, tag, lastRawProps, nextRawProps, rootContainerElement) {
  {
    validatePropertiesInDevelopment(tag, nextRawProps);
  }

  var updatePayload = null;

  var lastProps = void 0;
  var nextProps = void 0;
  switch (tag) {
    case 'input':
      lastProps = getHostProps(domElement, lastRawProps);
      nextProps = getHostProps(domElement, nextRawProps);
      updatePayload = [];
      break;
    case 'option':
      lastProps = getHostProps$1(domElement, lastRawProps);
      nextProps = getHostProps$1(domElement, nextRawProps);
      updatePayload = [];
      break;
    case 'select':
      lastProps = getHostProps$2(domElement, lastRawProps);
      nextProps = getHostProps$2(domElement, nextRawProps);
      updatePayload = [];
      break;
    case 'textarea':
      lastProps = getHostProps$3(domElement, lastRawProps);
      nextProps = getHostProps$3(domElement, nextRawProps);
      updatePayload = [];
      break;
    default:
      lastProps = lastRawProps;
      nextProps = nextRawProps;
      if (typeof lastProps.onClick !== 'function' && typeof nextProps.onClick === 'function') {
        // TODO: This cast may not be sound for SVG, MathML or custom elements.
        trapClickOnNonInteractiveElement(domElement);
      }
      break;
  }

  assertValidProps(tag, nextProps);

  var propKey = void 0;
  var styleName = void 0;
  var styleUpdates = null;
  for (propKey in lastProps) {
    if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {
      continue;
    }
    if (propKey === STYLE$1) {
      var lastStyle = lastProps[propKey];
      for (styleName in lastStyle) {
        if (lastStyle.hasOwnProperty(styleName)) {
          if (!styleUpdates) {
            styleUpdates = {};
          }
          styleUpdates[styleName] = '';
        }
      }
    } else if (propKey === DANGEROUSLY_SET_INNER_HTML || propKey === CHILDREN) {
      // Noop. This is handled by the clear text mechanism.
    } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING$1) {
      // Noop
    } else if (propKey === AUTOFOCUS) {
      // Noop. It doesn't work on updates anyway.
    } else if (registrationNameModules.hasOwnProperty(propKey)) {
      // This is a special case. If any listener updates we need to ensure
      // that the "current" fiber pointer gets updated so we need a commit
      // to update this element.
      if (!updatePayload) {
        updatePayload = [];
      }
    } else {
      // For all other deleted properties we add it to the queue. We use
      // the whitelist in the commit phase instead.
      (updatePayload = updatePayload || []).push(propKey, null);
    }
  }
  for (propKey in nextProps) {
    var nextProp = nextProps[propKey];
    var lastProp = lastProps != null ? lastProps[propKey] : undefined;
    if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {
      continue;
    }
    if (propKey === STYLE$1) {
      {
        if (nextProp) {
          // Freeze the next style object so that we can assume it won't be
          // mutated. We have already warned for this in the past.
          Object.freeze(nextProp);
        }
      }
      if (lastProp) {
        // Unset styles on `lastProp` but not on `nextProp`.
        for (styleName in lastProp) {
          if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {
            if (!styleUpdates) {
              styleUpdates = {};
            }
            styleUpdates[styleName] = '';
          }
        }
        // Update styles that changed since `lastProp`.
        for (styleName in nextProp) {
          if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {
            if (!styleUpdates) {
              styleUpdates = {};
            }
            styleUpdates[styleName] = nextProp[styleName];
          }
        }
      } else {
        // Relies on `updateStylesByID` not mutating `styleUpdates`.
        if (!styleUpdates) {
          if (!updatePayload) {
            updatePayload = [];
          }
          updatePayload.push(propKey, styleUpdates);
        }
        styleUpdates = nextProp;
      }
    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
      var nextHtml = nextProp ? nextProp[HTML] : undefined;
      var lastHtml = lastProp ? lastProp[HTML] : undefined;
      if (nextHtml != null) {
        if (lastHtml !== nextHtml) {
          (updatePayload = updatePayload || []).push(propKey, '' + nextHtml);
        }
      } else {
        // TODO: It might be too late to clear this if we have children
        // inserted already.
      }
    } else if (propKey === CHILDREN) {
      if (lastProp !== nextProp && (typeof nextProp === 'string' || typeof nextProp === 'number')) {
        (updatePayload = updatePayload || []).push(propKey, '' + nextProp);
      }
    } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING$1) {
      // Noop
    } else if (registrationNameModules.hasOwnProperty(propKey)) {
      if (nextProp != null) {
        // We eagerly listen to this even though we haven't committed yet.
        if (true && typeof nextProp !== 'function') {
          warnForInvalidEventListener(propKey, nextProp);
        }
        ensureListeningTo(rootContainerElement, propKey);
      }
      if (!updatePayload && lastProp !== nextProp) {
        // This is a special case. If any listener updates we need to ensure
        // that the "current" props pointer gets updated so we need a commit
        // to update this element.
        updatePayload = [];
      }
    } else {
      // For any other property we always add it to the queue and then we
      // filter it out using the whitelist during the commit.
      (updatePayload = updatePayload || []).push(propKey, nextProp);
    }
  }
  if (styleUpdates) {
    {
      validateShorthandPropertyCollisionInDev(styleUpdates, nextProps[STYLE$1]);
    }
    (updatePayload = updatePayload || []).push(STYLE$1, styleUpdates);
  }
  return updatePayload;
}

// Apply the diff.
function updateProperties(domElement, updatePayload, tag, lastRawProps, nextRawProps) {
  // Update checked *before* name.
  // In the middle of an update, it is possible to have multiple checked.
  // When a checked radio tries to change name, browser makes another radio's checked false.
  if (tag === 'input' && nextRawProps.type === 'radio' && nextRawProps.name != null) {
    updateChecked(domElement, nextRawProps);
  }

  var wasCustomComponentTag = isCustomComponent(tag, lastRawProps);
  var isCustomComponentTag = isCustomComponent(tag, nextRawProps);
  // Apply the diff.
  updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag);

  // TODO: Ensure that an update gets scheduled if any of the special props
  // changed.
  switch (tag) {
    case 'input':
      // Update the wrapper around inputs *after* updating props. This has to
      // happen after `updateDOMProperties`. Otherwise HTML5 input validations
      // raise warnings and prevent the new value from being assigned.
      updateWrapper(domElement, nextRawProps);
      break;
    case 'textarea':
      updateWrapper$1(domElement, nextRawProps);
      break;
    case 'select':
      // <select> value update needs to occur after <option> children
      // reconciliation
      postUpdateWrapper(domElement, nextRawProps);
      break;
  }
}

function getPossibleStandardName(propName) {
  {
    var lowerCasedName = propName.toLowerCase();
    if (!possibleStandardNames.hasOwnProperty(lowerCasedName)) {
      return null;
    }
    return possibleStandardNames[lowerCasedName] || null;
  }
  return null;
}

function diffHydratedProperties(domElement, tag, rawProps, parentNamespace, rootContainerElement) {
  var isCustomComponentTag = void 0;
  var extraAttributeNames = void 0;

  {
    suppressHydrationWarning = rawProps[SUPPRESS_HYDRATION_WARNING$1] === true;
    isCustomComponentTag = isCustomComponent(tag, rawProps);
    validatePropertiesInDevelopment(tag, rawProps);
    if (isCustomComponentTag && !didWarnShadyDOM && domElement.shadyRoot) {
      warning$1(false, '%s is using shady DOM. Using shady DOM with React can ' + 'cause things to break subtly.', getCurrentFiberOwnerNameInDevOrNull() || 'A component');
      didWarnShadyDOM = true;
    }
  }

  // TODO: Make sure that we check isMounted before firing any of these events.
  switch (tag) {
    case 'iframe':
    case 'object':
      trapBubbledEvent(TOP_LOAD, domElement);
      break;
    case 'video':
    case 'audio':
      // Create listener for each media event
      for (var i = 0; i < mediaEventTypes.length; i++) {
        trapBubbledEvent(mediaEventTypes[i], domElement);
      }
      break;
    case 'source':
      trapBubbledEvent(TOP_ERROR, domElement);
      break;
    case 'img':
    case 'image':
    case 'link':
      trapBubbledEvent(TOP_ERROR, domElement);
      trapBubbledEvent(TOP_LOAD, domElement);
      break;
    case 'form':
      trapBubbledEvent(TOP_RESET, domElement);
      trapBubbledEvent(TOP_SUBMIT, domElement);
      break;
    case 'details':
      trapBubbledEvent(TOP_TOGGLE, domElement);
      break;
    case 'input':
      initWrapperState(domElement, rawProps);
      trapBubbledEvent(TOP_INVALID, domElement);
      // For controlled components we always need to ensure we're listening
      // to onChange. Even if there is no listener.
      ensureListeningTo(rootContainerElement, 'onChange');
      break;
    case 'option':
      validateProps(domElement, rawProps);
      break;
    case 'select':
      initWrapperState$1(domElement, rawProps);
      trapBubbledEvent(TOP_INVALID, domElement);
      // For controlled components we always need to ensure we're listening
      // to onChange. Even if there is no listener.
      ensureListeningTo(rootContainerElement, 'onChange');
      break;
    case 'textarea':
      initWrapperState$2(domElement, rawProps);
      trapBubbledEvent(TOP_INVALID, domElement);
      // For controlled components we always need to ensure we're listening
      // to onChange. Even if there is no listener.
      ensureListeningTo(rootContainerElement, 'onChange');
      break;
  }

  assertValidProps(tag, rawProps);

  {
    extraAttributeNames = new Set();
    var attributes = domElement.attributes;
    for (var _i = 0; _i < attributes.length; _i++) {
      var name = attributes[_i].name.toLowerCase();
      switch (name) {
        // Built-in SSR attribute is whitelisted
        case 'data-reactroot':
          break;
        // Controlled attributes are not validated
        // TODO: Only ignore them on controlled tags.
        case 'value':
          break;
        case 'checked':
          break;
        case 'selected':
          break;
        default:
          // Intentionally use the original name.
          // See discussion in https://github.com/facebook/react/pull/10676.
          extraAttributeNames.add(attributes[_i].name);
      }
    }
  }

  var updatePayload = null;
  for (var propKey in rawProps) {
    if (!rawProps.hasOwnProperty(propKey)) {
      continue;
    }
    var nextProp = rawProps[propKey];
    if (propKey === CHILDREN) {
      // For text content children we compare against textContent. This
      // might match additional HTML that is hidden when we read it using
      // textContent. E.g. "foo" will match "f<span>oo</span>" but that still
      // satisfies our requirement. Our requirement is not to produce perfect
      // HTML and attributes. Ideally we should preserve structure but it's
      // ok not to if the visible content is still enough to indicate what
      // even listeners these nodes might be wired up to.
      // TODO: Warn if there is more than a single textNode as a child.
      // TODO: Should we use domElement.firstChild.nodeValue to compare?
      if (typeof nextProp === 'string') {
        if (domElement.textContent !== nextProp) {
          if (true && !suppressHydrationWarning) {
            warnForTextDifference(domElement.textContent, nextProp);
          }
          updatePayload = [CHILDREN, nextProp];
        }
      } else if (typeof nextProp === 'number') {
        if (domElement.textContent !== '' + nextProp) {
          if (true && !suppressHydrationWarning) {
            warnForTextDifference(domElement.textContent, nextProp);
          }
          updatePayload = [CHILDREN, '' + nextProp];
        }
      }
    } else if (registrationNameModules.hasOwnProperty(propKey)) {
      if (nextProp != null) {
        if (true && typeof nextProp !== 'function') {
          warnForInvalidEventListener(propKey, nextProp);
        }
        ensureListeningTo(rootContainerElement, propKey);
      }
    } else if (true &&
    // Convince Flow we've calculated it (it's DEV-only in this method.)
    typeof isCustomComponentTag === 'boolean') {
      // Validate that the properties correspond to their expected values.
      var serverValue = void 0;
      var propertyInfo = getPropertyInfo(propKey);
      if (suppressHydrationWarning) {
        // Don't bother comparing. We're ignoring all these warnings.
      } else if (propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING$1 ||
      // Controlled attributes are not validated
      // TODO: Only ignore them on controlled tags.
      propKey === 'value' || propKey === 'checked' || propKey === 'selected') {
        // Noop
      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
        var serverHTML = domElement.innerHTML;
        var nextHtml = nextProp ? nextProp[HTML] : undefined;
        var expectedHTML = normalizeHTML(domElement, nextHtml != null ? nextHtml : '');
        if (expectedHTML !== serverHTML) {
          warnForPropDifference(propKey, serverHTML, expectedHTML);
        }
      } else if (propKey === STYLE$1) {
        // $FlowFixMe - Should be inferred as not undefined.
        extraAttributeNames.delete(propKey);

        if (canDiffStyleForHydrationWarning) {
          var expectedStyle = createDangerousStringForStyles(nextProp);
          serverValue = domElement.getAttribute('style');
          if (expectedStyle !== serverValue) {
            warnForPropDifference(propKey, serverValue, expectedStyle);
          }
        }
      } else if (isCustomComponentTag) {
        // $FlowFixMe - Should be inferred as not undefined.
        extraAttributeNames.delete(propKey.toLowerCase());
        serverValue = getValueForAttribute(domElement, propKey, nextProp);

        if (nextProp !== serverValue) {
          warnForPropDifference(propKey, serverValue, nextProp);
        }
      } else if (!shouldIgnoreAttribute(propKey, propertyInfo, isCustomComponentTag) && !shouldRemoveAttribute(propKey, nextProp, propertyInfo, isCustomComponentTag)) {
        var isMismatchDueToBadCasing = false;
        if (propertyInfo !== null) {
          // $FlowFixMe - Should be inferred as not undefined.
          extraAttributeNames.delete(propertyInfo.attributeName);
          serverValue = getValueForProperty(domElement, propKey, nextProp, propertyInfo);
        } else {
          var ownNamespace = parentNamespace;
          if (ownNamespace === HTML_NAMESPACE) {
            ownNamespace = getIntrinsicNamespace(tag);
          }
          if (ownNamespace === HTML_NAMESPACE) {
            // $FlowFixMe - Should be inferred as not undefined.
            extraAttributeNames.delete(propKey.toLowerCase());
          } else {
            var standardName = getPossibleStandardName(propKey);
            if (standardName !== null && standardName !== propKey) {
              // If an SVG prop is supplied with bad casing, it will
              // be successfully parsed from HTML, but will produce a mismatch
              // (and would be incorrectly rendered on the client).
              // However, we already warn about bad casing elsewhere.
              // So we'll skip the misleading extra mismatch warning in this case.
              isMismatchDueToBadCasing = true;
              // $FlowFixMe - Should be inferred as not undefined.
              extraAttributeNames.delete(standardName);
            }
            // $FlowFixMe - Should be inferred as not undefined.
            extraAttributeNames.delete(propKey);
          }
          serverValue = getValueForAttribute(domElement, propKey, nextProp);
        }

        if (nextProp !== serverValue && !isMismatchDueToBadCasing) {
          warnForPropDifference(propKey, serverValue, nextProp);
        }
      }
    }
  }

  {
    // $FlowFixMe - Should be inferred as not undefined.
    if (extraAttributeNames.size > 0 && !suppressHydrationWarning) {
      // $FlowFixMe - Should be inferred as not undefined.
      warnForExtraAttributes(extraAttributeNames);
    }
  }

  switch (tag) {
    case 'input':
      // TODO: Make sure we check if this is still unmounted or do any clean
      // up necessary since we never stop tracking anymore.
      track(domElement);
      postMountWrapper(domElement, rawProps, true);
      break;
    case 'textarea':
      // TODO: Make sure we check if this is still unmounted or do any clean
      // up necessary since we never stop tracking anymore.
      track(domElement);
      postMountWrapper$3(domElement, rawProps);
      break;
    case 'select':
    case 'option':
      // For input and textarea we current always set the value property at
      // post mount to force it to diverge from attributes. However, for
      // option and select we don't quite do the same thing and select
      // is not resilient to the DOM state changing so we don't do that here.
      // TODO: Consider not doing this for input and textarea.
      break;
    default:
      if (typeof rawProps.onClick === 'function') {
        // TODO: This cast may not be sound for SVG, MathML or custom elements.
        trapClickOnNonInteractiveElement(domElement);
      }
      break;
  }

  return updatePayload;
}

function diffHydratedText(textNode, text) {
  var isDifferent = textNode.nodeValue !== text;
  return isDifferent;
}

function warnForUnmatchedText(textNode, text) {
  {
    warnForTextDifference(textNode.nodeValue, text);
  }
}

function warnForDeletedHydratableElement(parentNode, child) {
  {
    if (didWarnInvalidHydration) {
      return;
    }
    didWarnInvalidHydration = true;
    warningWithoutStack$1(false, 'Did not expect server HTML to contain a <%s> in <%s>.', child.nodeName.toLowerCase(), parentNode.nodeName.toLowerCase());
  }
}

function warnForDeletedHydratableText(parentNode, child) {
  {
    if (didWarnInvalidHydration) {
      return;
    }
    didWarnInvalidHydration = true;
    warningWithoutStack$1(false, 'Did not expect server HTML to contain the text node "%s" in <%s>.', child.nodeValue, parentNode.nodeName.toLowerCase());
  }
}

function warnForInsertedHydratedElement(parentNode, tag, props) {
  {
    if (didWarnInvalidHydration) {
      return;
    }
    didWarnInvalidHydration = true;
    warningWithoutStack$1(false, 'Expected server HTML to contain a matching <%s> in <%s>.', tag, parentNode.nodeName.toLowerCase());
  }
}

function warnForInsertedHydratedText(parentNode, text) {
  {
    if (text === '') {
      // We expect to insert empty text nodes since they're not represented in
      // the HTML.
      // TODO: Remove this special case if we can just avoid inserting empty
      // text nodes.
      return;
    }
    if (didWarnInvalidHydration) {
      return;
    }
    didWarnInvalidHydration = true;
    warningWithoutStack$1(false, 'Expected server HTML to contain a matching text node for "%s" in <%s>.', text, parentNode.nodeName.toLowerCase());
  }
}

function restoreControlledState$1(domElement, tag, props) {
  switch (tag) {
    case 'input':
      restoreControlledState(domElement, props);
      return;
    case 'textarea':
      restoreControlledState$3(domElement, props);
      return;
    case 'select':
      restoreControlledState$2(domElement, props);
      return;
  }
}

// TODO: direct imports like some-package/src/* are bad. Fix me.
var validateDOMNesting = function () {};
var updatedAncestorInfo = function () {};

{
  // This validation code was written based on the HTML5 parsing spec:
  // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-scope
  //
  // Note: this does not catch all invalid nesting, nor does it try to (as it's
  // not clear what practical benefit doing so provides); instead, we warn only
  // for cases where the parser will give a parse tree differing from what React
  // intended. For example, <b><div></div></b> is invalid but we don't warn
  // because it still parses correctly; we do warn for other cases like nested
  // <p> tags where the beginning of the second element implicitly closes the
  // first, causing a confusing mess.

  // https://html.spec.whatwg.org/multipage/syntax.html#special
  var specialTags = ['address', 'applet', 'area', 'article', 'aside', 'base', 'basefont', 'bgsound', 'blockquote', 'body', 'br', 'button', 'caption', 'center', 'col', 'colgroup', 'dd', 'details', 'dir', 'div', 'dl', 'dt', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'frame', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'iframe', 'img', 'input', 'isindex', 'li', 'link', 'listing', 'main', 'marquee', 'menu', 'menuitem', 'meta', 'nav', 'noembed', 'noframes', 'noscript', 'object', 'ol', 'p', 'param', 'plaintext', 'pre', 'script', 'section', 'select', 'source', 'style', 'summary', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'title', 'tr', 'track', 'ul', 'wbr', 'xmp'];

  // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-scope
  var inScopeTags = ['applet', 'caption', 'html', 'table', 'td', 'th', 'marquee', 'object', 'template',

  // https://html.spec.whatwg.org/multipage/syntax.html#html-integration-point
  // TODO: Distinguish by namespace here -- for <title>, including it here
  // errs on the side of fewer warnings
  'foreignObject', 'desc', 'title'];

  // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-button-scope
  var buttonScopeTags = inScopeTags.concat(['button']);

  // https://html.spec.whatwg.org/multipage/syntax.html#generate-implied-end-tags
  var impliedEndTags = ['dd', 'dt', 'li', 'option', 'optgroup', 'p', 'rp', 'rt'];

  var emptyAncestorInfo = {
    current: null,

    formTag: null,
    aTagInScope: null,
    buttonTagInScope: null,
    nobrTagInScope: null,
    pTagInButtonScope: null,

    listItemTagAutoclosing: null,
    dlItemTagAutoclosing: null
  };

  updatedAncestorInfo = function (oldInfo, tag) {
    var ancestorInfo = _assign({}, oldInfo || emptyAncestorInfo);
    var info = { tag: tag };

    if (inScopeTags.indexOf(tag) !== -1) {
      ancestorInfo.aTagInScope = null;
      ancestorInfo.buttonTagInScope = null;
      ancestorInfo.nobrTagInScope = null;
    }
    if (buttonScopeTags.indexOf(tag) !== -1) {
      ancestorInfo.pTagInButtonScope = null;
    }

    // See rules for 'li', 'dd', 'dt' start tags in
    // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
    if (specialTags.indexOf(tag) !== -1 && tag !== 'address' && tag !== 'div' && tag !== 'p') {
      ancestorInfo.listItemTagAutoclosing = null;
      ancestorInfo.dlItemTagAutoclosing = null;
    }

    ancestorInfo.current = info;

    if (tag === 'form') {
      ancestorInfo.formTag = info;
    }
    if (tag === 'a') {
      ancestorInfo.aTagInScope = info;
    }
    if (tag === 'button') {
      ancestorInfo.buttonTagInScope = info;
    }
    if (tag === 'nobr') {
      ancestorInfo.nobrTagInScope = info;
    }
    if (tag === 'p') {
      ancestorInfo.pTagInButtonScope = info;
    }
    if (tag === 'li') {
      ancestorInfo.listItemTagAutoclosing = info;
    }
    if (tag === 'dd' || tag === 'dt') {
      ancestorInfo.dlItemTagAutoclosing = info;
    }

    return ancestorInfo;
  };

  /**
   * Returns whether
   */
  var isTagValidWithParent = function (tag, parentTag) {
    // First, let's check if we're in an unusual parsing mode...
    switch (parentTag) {
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inselect
      case 'select':
        return tag === 'option' || tag === 'optgroup' || tag === '#text';
      case 'optgroup':
        return tag === 'option' || tag === '#text';
      // Strictly speaking, seeing an <option> doesn't mean we're in a <select>
      // but
      case 'option':
        return tag === '#text';
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intd
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incaption
      // No special behavior since these rules fall back to "in body" mode for
      // all except special table nodes which cause bad parsing behavior anyway.

      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intr
      case 'tr':
        return tag === 'th' || tag === 'td' || tag === 'style' || tag === 'script' || tag === 'template';
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intbody
      case 'tbody':
      case 'thead':
      case 'tfoot':
        return tag === 'tr' || tag === 'style' || tag === 'script' || tag === 'template';
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incolgroup
      case 'colgroup':
        return tag === 'col' || tag === 'template';
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intable
      case 'table':
        return tag === 'caption' || tag === 'colgroup' || tag === 'tbody' || tag === 'tfoot' || tag === 'thead' || tag === 'style' || tag === 'script' || tag === 'template';
      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inhead
      case 'head':
        return tag === 'base' || tag === 'basefont' || tag === 'bgsound' || tag === 'link' || tag === 'meta' || tag === 'title' || tag === 'noscript' || tag === 'noframes' || tag === 'style' || tag === 'script' || tag === 'template';
      // https://html.spec.whatwg.org/multipage/semantics.html#the-html-element
      case 'html':
        return tag === 'head' || tag === 'body';
      case '#document':
        return tag === 'html';
    }

    // Probably in the "in body" parsing mode, so we outlaw only tag combos
    // where the parsing rules cause implicit opens or closes to be added.
    // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
    switch (tag) {
      case 'h1':
      case 'h2':
      case 'h3':
      case 'h4':
      case 'h5':
      case 'h6':
        return parentTag !== 'h1' && parentTag !== 'h2' && parentTag !== 'h3' && parentTag !== 'h4' && parentTag !== 'h5' && parentTag !== 'h6';

      case 'rp':
      case 'rt':
        return impliedEndTags.indexOf(parentTag) === -1;

      case 'body':
      case 'caption':
      case 'col':
      case 'colgroup':
      case 'frame':
      case 'head':
      case 'html':
      case 'tbody':
      case 'td':
      case 'tfoot':
      case 'th':
      case 'thead':
      case 'tr':
        // These tags are only valid with a few parents that have special child
        // parsing rules -- if we're down here, then none of those matched and
        // so we allow it only if we don't know what the parent is, as all other
        // cases are invalid.
        return parentTag == null;
    }

    return true;
  };

  /**
   * Returns whether
   */
  var findInvalidAncestorForTag = function (tag, ancestorInfo) {
    switch (tag) {
      case 'address':
      case 'article':
      case 'aside':
      case 'blockquote':
      case 'center':
      case 'details':
      case 'dialog':
      case 'dir':
      case 'div':
      case 'dl':
      case 'fieldset':
      case 'figcaption':
      case 'figure':
      case 'footer':
      case 'header':
      case 'hgroup':
      case 'main':
      case 'menu':
      case 'nav':
      case 'ol':
      case 'p':
      case 'section':
      case 'summary':
      case 'ul':
      case 'pre':
      case 'listing':
      case 'table':
      case 'hr':
      case 'xmp':
      case 'h1':
      case 'h2':
      case 'h3':
      case 'h4':
      case 'h5':
      case 'h6':
        return ancestorInfo.pTagInButtonScope;

      case 'form':
        return ancestorInfo.formTag || ancestorInfo.pTagInButtonScope;

      case 'li':
        return ancestorInfo.listItemTagAutoclosing;

      case 'dd':
      case 'dt':
        return ancestorInfo.dlItemTagAutoclosing;

      case 'button':
        return ancestorInfo.buttonTagInScope;

      case 'a':
        // Spec says something about storing a list of markers, but it sounds
        // equivalent to this check.
        return ancestorInfo.aTagInScope;

      case 'nobr':
        return ancestorInfo.nobrTagInScope;
    }

    return null;
  };

  var didWarn = {};

  validateDOMNesting = function (childTag, childText, ancestorInfo) {
    ancestorInfo = ancestorInfo || emptyAncestorInfo;
    var parentInfo = ancestorInfo.current;
    var parentTag = parentInfo && parentInfo.tag;

    if (childText != null) {
      !(childTag == null) ? warningWithoutStack$1(false, 'validateDOMNesting: when childText is passed, childTag should be null') : void 0;
      childTag = '#text';
    }

    var invalidParent = isTagValidWithParent(childTag, parentTag) ? null : parentInfo;
    var invalidAncestor = invalidParent ? null : findInvalidAncestorForTag(childTag, ancestorInfo);
    var invalidParentOrAncestor = invalidParent || invalidAncestor;
    if (!invalidParentOrAncestor) {
      return;
    }

    var ancestorTag = invalidParentOrAncestor.tag;
    var addendum = getCurrentFiberStackInDev();

    var warnKey = !!invalidParent + '|' + childTag + '|' + ancestorTag + '|' + addendum;
    if (didWarn[warnKey]) {
      return;
    }
    didWarn[warnKey] = true;

    var tagDisplayName = childTag;
    var whitespaceInfo = '';
    if (childTag === '#text') {
      if (/\S/.test(childText)) {
        tagDisplayName = 'Text nodes';
      } else {
        tagDisplayName = 'Whitespace text nodes';
        whitespaceInfo = " Make sure you don't have any extra whitespace between tags on " + 'each line of your source code.';
      }
    } else {
      tagDisplayName = '<' + childTag + '>';
    }

    if (invalidParent) {
      var info = '';
      if (ancestorTag === 'table' && childTag === 'tr') {
        info += ' Add a <tbody> to your code to match the DOM tree generated by ' + 'the browser.';
      }
      warningWithoutStack$1(false, 'validateDOMNesting(...): %s cannot appear as a child of <%s>.%s%s%s', tagDisplayName, ancestorTag, whitespaceInfo, info, addendum);
    } else {
      warningWithoutStack$1(false, 'validateDOMNesting(...): %s cannot appear as a descendant of ' + '<%s>.%s', tagDisplayName, ancestorTag, addendum);
    }
  };
}

// Renderers that don't support persistence
// can re-export everything from this module.

function shim() {
  invariant(false, 'The current renderer does not support persistence. This error is likely caused by a bug in React. Please file an issue.');
}

// Persistence (when unsupported)
var supportsPersistence = false;
var cloneInstance = shim;
var createContainerChildSet = shim;
var appendChildToContainerChildSet = shim;
var finalizeContainerChildren = shim;
var replaceContainerChildren = shim;
var cloneHiddenInstance = shim;
var cloneUnhiddenInstance = shim;
var createHiddenTextInstance = shim;

var SUPPRESS_HYDRATION_WARNING = void 0;
{
  SUPPRESS_HYDRATION_WARNING = 'suppressHydrationWarning';
}

var SUSPENSE_START_DATA = '$';
var SUSPENSE_END_DATA = '/$';

var STYLE = 'style';

var eventsEnabled = null;
var selectionInformation = null;

function shouldAutoFocusHostComponent(type, props) {
  switch (type) {
    case 'button':
    case 'input':
    case 'select':
    case 'textarea':
      return !!props.autoFocus;
  }
  return false;
}

function getRootHostContext(rootContainerInstance) {
  var type = void 0;
  var namespace = void 0;
  var nodeType = rootContainerInstance.nodeType;
  switch (nodeType) {
    case DOCUMENT_NODE:
    case DOCUMENT_FRAGMENT_NODE:
      {
        type = nodeType === DOCUMENT_NODE ? '#document' : '#fragment';
        var root = rootContainerInstance.documentElement;
        namespace = root ? root.namespaceURI : getChildNamespace(null, '');
        break;
      }
    default:
      {
        var container = nodeType === COMMENT_NODE ? rootContainerInstance.parentNode : rootContainerInstance;
        var ownNamespace = container.namespaceURI || null;
        type = container.tagName;
        namespace = getChildNamespace(ownNamespace, type);
        break;
      }
  }
  {
    var validatedTag = type.toLowerCase();
    var _ancestorInfo = updatedAncestorInfo(null, validatedTag);
    return { namespace: namespace, ancestorInfo: _ancestorInfo };
  }
  return namespace;
}

function getChildHostContext(parentHostContext, type, rootContainerInstance) {
  {
    var parentHostContextDev = parentHostContext;
    var _namespace = getChildNamespace(parentHostContextDev.namespace, type);
    var _ancestorInfo2 = updatedAncestorInfo(parentHostContextDev.ancestorInfo, type);
    return { namespace: _namespace, ancestorInfo: _ancestorInfo2 };
  }
  var parentNamespace = parentHostContext;
  return getChildNamespace(parentNamespace, type);
}

function getPublicInstance(instance) {
  return instance;
}

function prepareForCommit(containerInfo) {
  eventsEnabled = isEnabled();
  selectionInformation = getSelectionInformation();
  setEnabled(false);
}

function resetAfterCommit(containerInfo) {
  restoreSelection(selectionInformation);
  selectionInformation = null;
  setEnabled(eventsEnabled);
  eventsEnabled = null;
}

function createInstance(type, props, rootContainerInstance, hostContext, internalInstanceHandle) {
  var parentNamespace = void 0;
  {
    // TODO: take namespace into account when validating.
    var hostContextDev = hostContext;
    validateDOMNesting(type, null, hostContextDev.ancestorInfo);
    if (typeof props.children === 'string' || typeof props.children === 'number') {
      var string = '' + props.children;
      var ownAncestorInfo = updatedAncestorInfo(hostContextDev.ancestorInfo, type);
      validateDOMNesting(null, string, ownAncestorInfo);
    }
    parentNamespace = hostContextDev.namespace;
  }
  var domElement = createElement(type, props, rootContainerInstance, parentNamespace);
  precacheFiberNode(internalInstanceHandle, domElement);
  updateFiberProps(domElement, props);
  return domElement;
}

function appendInitialChild(parentInstance, child) {
  parentInstance.appendChild(child);
}

function finalizeInitialChildren(domElement, type, props, rootContainerInstance, hostContext) {
  setInitialProperties(domElement, type, props, rootContainerInstance);
  return shouldAutoFocusHostComponent(type, props);
}

function prepareUpdate(domElement, type, oldProps, newProps, rootContainerInstance, hostContext) {
  {
    var hostContextDev = hostContext;
    if (typeof newProps.children !== typeof oldProps.children && (typeof newProps.children === 'string' || typeof newProps.children === 'number')) {
      var string = '' + newProps.children;
      var ownAncestorInfo = updatedAncestorInfo(hostContextDev.ancestorInfo, type);
      validateDOMNesting(null, string, ownAncestorInfo);
    }
  }
  return diffProperties(domElement, type, oldProps, newProps, rootContainerInstance);
}

function shouldSetTextContent(type, props) {
  return type === 'textarea' || type === 'option' || type === 'noscript' || typeof props.children === 'string' || typeof props.children === 'number' || typeof props.dangerouslySetInnerHTML === 'object' && props.dangerouslySetInnerHTML !== null && props.dangerouslySetInnerHTML.__html != null;
}

function shouldDeprioritizeSubtree(type, props) {
  return !!props.hidden;
}

function createTextInstance(text, rootContainerInstance, hostContext, internalInstanceHandle) {
  {
    var hostContextDev = hostContext;
    validateDOMNesting(null, text, hostContextDev.ancestorInfo);
  }
  var textNode = createTextNode(text, rootContainerInstance);
  precacheFiberNode(internalInstanceHandle, textNode);
  return textNode;
}

var isPrimaryRenderer = true;
// This initialization code may run even on server environments
// if a component just imports ReactDOM (e.g. for findDOMNode).
// Some environments might not have setTimeout or clearTimeout.
var scheduleTimeout = typeof setTimeout === 'function' ? setTimeout : undefined;
var cancelTimeout = typeof clearTimeout === 'function' ? clearTimeout : undefined;
var noTimeout = -1;
var schedulePassiveEffects = scheduler.unstable_scheduleCallback;
var cancelPassiveEffects = scheduler.unstable_cancelCallback;

// -------------------
//     Mutation
// -------------------

var supportsMutation = true;

function commitMount(domElement, type, newProps, internalInstanceHandle) {
  // Despite the naming that might imply otherwise, this method only
  // fires if there is an `Update` effect scheduled during mounting.
  // This happens if `finalizeInitialChildren` returns `true` (which it
  // does to implement the `autoFocus` attribute on the client). But
  // there are also other cases when this might happen (such as patching
  // up text content during hydration mismatch). So we'll check this again.
  if (shouldAutoFocusHostComponent(type, newProps)) {
    domElement.focus();
  }
}

function commitUpdate(domElement, updatePayload, type, oldProps, newProps, internalInstanceHandle) {
  // Update the props handle so that we know which props are the ones with
  // with current event handlers.
  updateFiberProps(domElement, newProps);
  // Apply the diff to the DOM node.
  updateProperties(domElement, updatePayload, type, oldProps, newProps);
}

function resetTextContent(domElement) {
  setTextContent(domElement, '');
}

function commitTextUpdate(textInstance, oldText, newText) {
  textInstance.nodeValue = newText;
}

function appendChild(parentInstance, child) {
  parentInstance.appendChild(child);
}

function appendChildToContainer(container, child) {
  var parentNode = void 0;
  if (container.nodeType === COMMENT_NODE) {
    parentNode = container.parentNode;
    parentNode.insertBefore(child, container);
  } else {
    parentNode = container;
    parentNode.appendChild(child);
  }
  // This container might be used for a portal.
  // If something inside a portal is clicked, that click should bubble
  // through the React tree. However, on Mobile Safari the click would
  // never bubble through the *DOM* tree unless an ancestor with onclick
  // event exists. So we wouldn't see it and dispatch it.
  // This is why we ensure that non React root containers have inline onclick
  // defined.
  // https://github.com/facebook/react/issues/11918
  var reactRootContainer = container._reactRootContainer;
  if ((reactRootContainer === null || reactRootContainer === undefined) && parentNode.onclick === null) {
    // TODO: This cast may not be sound for SVG, MathML or custom elements.
    trapClickOnNonInteractiveElement(parentNode);
  }
}

function insertBefore(parentInstance, child, beforeChild) {
  parentInstance.insertBefore(child, beforeChild);
}

function insertInContainerBefore(container, child, beforeChild) {
  if (container.nodeType === COMMENT_NODE) {
    container.parentNode.insertBefore(child, beforeChild);
  } else {
    container.insertBefore(child, beforeChild);
  }
}

function removeChild(parentInstance, child) {
  parentInstance.removeChild(child);
}

function removeChildFromContainer(container, child) {
  if (container.nodeType === COMMENT_NODE) {
    container.parentNode.removeChild(child);
  } else {
    container.removeChild(child);
  }
}

function clearSuspenseBoundary(parentInstance, suspenseInstance) {
  var node = suspenseInstance;
  // Delete all nodes within this suspense boundary.
  // There might be nested nodes so we need to keep track of how
  // deep we are and only break out when we're back on top.
  var depth = 0;
  do {
    var nextNode = node.nextSibling;
    parentInstance.removeChild(node);
    if (nextNode && nextNode.nodeType === COMMENT_NODE) {
      var data = nextNode.data;
      if (data === SUSPENSE_END_DATA) {
        if (depth === 0) {
          parentInstance.removeChild(nextNode);
          return;
        } else {
          depth--;
        }
      } else if (data === SUSPENSE_START_DATA) {
        depth++;
      }
    }
    node = nextNode;
  } while (node);
  // TODO: Warn, we didn't find the end comment boundary.
}

function clearSuspenseBoundaryFromContainer(container, suspenseInstance) {
  if (container.nodeType === COMMENT_NODE) {
    clearSuspenseBoundary(container.parentNode, suspenseInstance);
  } else if (container.nodeType === ELEMENT_NODE) {
    clearSuspenseBoundary(container, suspenseInstance);
  } else {
    // Document nodes should never contain suspense boundaries.
  }
}

function hideInstance(instance) {
  // TODO: Does this work for all element types? What about MathML? Should we
  // pass host context to this method?
  instance = instance;
  instance.style.display = 'none';
}

function hideTextInstance(textInstance) {
  textInstance.nodeValue = '';
}

function unhideInstance(instance, props) {
  instance = instance;
  var styleProp = props[STYLE];
  var display = styleProp !== undefined && styleProp !== null && styleProp.hasOwnProperty('display') ? styleProp.display : null;
  instance.style.display = dangerousStyleValue('display', display);
}

function unhideTextInstance(textInstance, text) {
  textInstance.nodeValue = text;
}

// -------------------
//     Hydration
// -------------------

var supportsHydration = true;

function canHydrateInstance(instance, type, props) {
  if (instance.nodeType !== ELEMENT_NODE || type.toLowerCase() !== instance.nodeName.toLowerCase()) {
    return null;
  }
  // This has now been refined to an element node.
  return instance;
}

function canHydrateTextInstance(instance, text) {
  if (text === '' || instance.nodeType !== TEXT_NODE) {
    // Empty strings are not parsed by HTML so there won't be a correct match here.
    return null;
  }
  // This has now been refined to a text node.
  return instance;
}

function canHydrateSuspenseInstance(instance) {
  if (instance.nodeType !== COMMENT_NODE) {
    // Empty strings are not parsed by HTML so there won't be a correct match here.
    return null;
  }
  // This has now been refined to a suspense node.
  return instance;
}

function getNextHydratableSibling(instance) {
  var node = instance.nextSibling;
  // Skip non-hydratable nodes.
  while (node && node.nodeType !== ELEMENT_NODE && node.nodeType !== TEXT_NODE && (!enableSuspenseServerRenderer || node.nodeType !== COMMENT_NODE || node.data !== SUSPENSE_START_DATA)) {
    node = node.nextSibling;
  }
  return node;
}

function getFirstHydratableChild(parentInstance) {
  var next = parentInstance.firstChild;
  // Skip non-hydratable nodes.
  while (next && next.nodeType !== ELEMENT_NODE && next.nodeType !== TEXT_NODE && (!enableSuspenseServerRenderer || next.nodeType !== COMMENT_NODE || next.data !== SUSPENSE_START_DATA)) {
    next = next.nextSibling;
  }
  return next;
}

function hydrateInstance(instance, type, props, rootContainerInstance, hostContext, internalInstanceHandle) {
  precacheFiberNode(internalInstanceHandle, instance);
  // TODO: Possibly defer this until the commit phase where all the events
  // get attached.
  updateFiberProps(instance, props);
  var parentNamespace = void 0;
  {
    var hostContextDev = hostContext;
    parentNamespace = hostContextDev.namespace;
  }
  return diffHydratedProperties(instance, type, props, parentNamespace, rootContainerInstance);
}

function hydrateTextInstance(textInstance, text, internalInstanceHandle) {
  precacheFiberNode(internalInstanceHandle, textInstance);
  return diffHydratedText(textInstance, text);
}

function getNextHydratableInstanceAfterSuspenseInstance(suspenseInstance) {
  var node = suspenseInstance.nextSibling;
  // Skip past all nodes within this suspense boundary.
  // There might be nested nodes so we need to keep track of how
  // deep we are and only break out when we're back on top.
  var depth = 0;
  while (node) {
    if (node.nodeType === COMMENT_NODE) {
      var data = node.data;
      if (data === SUSPENSE_END_DATA) {
        if (depth === 0) {
          return getNextHydratableSibling(node);
        } else {
          depth--;
        }
      } else if (data === SUSPENSE_START_DATA) {
        depth++;
      }
    }
    node = node.nextSibling;
  }
  // TODO: Warn, we didn't find the end comment boundary.
  return null;
}

function didNotMatchHydratedContainerTextInstance(parentContainer, textInstance, text) {
  {
    warnForUnmatchedText(textInstance, text);
  }
}

function didNotMatchHydratedTextInstance(parentType, parentProps, parentInstance, textInstance, text) {
  if (true && parentProps[SUPPRESS_HYDRATION_WARNING] !== true) {
    warnForUnmatchedText(textInstance, text);
  }
}

function didNotHydrateContainerInstance(parentContainer, instance) {
  {
    if (instance.nodeType === ELEMENT_NODE) {
      warnForDeletedHydratableElement(parentContainer, instance);
    } else if (instance.nodeType === COMMENT_NODE) {
      // TODO: warnForDeletedHydratableSuspenseBoundary
    } else {
      warnForDeletedHydratableText(parentContainer, instance);
    }
  }
}

function didNotHydrateInstance(parentType, parentProps, parentInstance, instance) {
  if (true && parentProps[SUPPRESS_HYDRATION_WARNING] !== true) {
    if (instance.nodeType === ELEMENT_NODE) {
      warnForDeletedHydratableElement(parentInstance, instance);
    } else if (instance.nodeType === COMMENT_NODE) {
      // TODO: warnForDeletedHydratableSuspenseBoundary
    } else {
      warnForDeletedHydratableText(parentInstance, instance);
    }
  }
}

function didNotFindHydratableContainerInstance(parentContainer, type, props) {
  {
    warnForInsertedHydratedElement(parentContainer, type, props);
  }
}

function didNotFindHydratableContainerTextInstance(parentContainer, text) {
  {
    warnForInsertedHydratedText(parentContainer, text);
  }
}



function didNotFindHydratableInstance(parentType, parentProps, parentInstance, type, props) {
  if (true && parentProps[SUPPRESS_HYDRATION_WARNING] !== true) {
    warnForInsertedHydratedElement(parentInstance, type, props);
  }
}

function didNotFindHydratableTextInstance(parentType, parentProps, parentInstance, text) {
  if (true && parentProps[SUPPRESS_HYDRATION_WARNING] !== true) {
    warnForInsertedHydratedText(parentInstance, text);
  }
}

function didNotFindHydratableSuspenseInstance(parentType, parentProps, parentInstance) {
  if (true && parentProps[SUPPRESS_HYDRATION_WARNING] !== true) {
    // TODO: warnForInsertedHydratedSuspense(parentInstance);
  }
}

// Prefix measurements so that it's possible to filter them.
// Longer prefixes are hard to read in DevTools.
var reactEmoji = '\u269B';
var warningEmoji = '\u26D4';
var supportsUserTiming = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function';

// Keep track of current fiber so that we know the path to unwind on pause.
// TODO: this looks the same as nextUnitOfWork in scheduler. Can we unify them?
var currentFiber = null;
// If we're in the middle of user code, which fiber and method is it?
// Reusing `currentFiber` would be confusing for this because user code fiber
// can change during commit phase too, but we don't need to unwind it (since
// lifecycles in the commit phase don't resemble a tree).
var currentPhase = null;
var currentPhaseFiber = null;
// Did lifecycle hook schedule an update? This is often a performance problem,
// so we will keep track of it, and include it in the report.
// Track commits caused by cascading updates.
var isCommitting = false;
var hasScheduledUpdateInCurrentCommit = false;
var hasScheduledUpdateInCurrentPhase = false;
var commitCountInCurrentWorkLoop = 0;
var effectCountInCurrentCommit = 0;
var isWaitingForCallback = false;
// During commits, we only show a measurement once per method name
// to avoid stretch the commit phase with measurement overhead.
var labelsInCurrentCommit = new Set();

var formatMarkName = function (markName) {
  return reactEmoji + ' ' + markName;
};

var formatLabel = function (label, warning) {
  var prefix = warning ? warningEmoji + ' ' : reactEmoji + ' ';
  var suffix = warning ? ' Warning: ' + warning : '';
  return '' + prefix + label + suffix;
};

var beginMark = function (markName) {
  performance.mark(formatMarkName(markName));
};

var clearMark = function (markName) {
  performance.clearMarks(formatMarkName(markName));
};

var endMark = function (label, markName, warning) {
  var formattedMarkName = formatMarkName(markName);
  var formattedLabel = formatLabel(label, warning);
  try {
    performance.measure(formattedLabel, formattedMarkName);
  } catch (err) {}
  // If previous mark was missing for some reason, this will throw.
  // This could only happen if React crashed in an unexpected place earlier.
  // Don't pile on with more errors.

  // Clear marks immediately to avoid growing buffer.
  performance.clearMarks(formattedMarkName);
  performance.clearMeasures(formattedLabel);
};

var getFiberMarkName = function (label, debugID) {
  return label + ' (#' + debugID + ')';
};

var getFiberLabel = function (componentName, isMounted, phase) {
  if (phase === null) {
    // These are composite component total time measurements.
    return componentName + ' [' + (isMounted ? 'update' : 'mount') + ']';
  } else {
    // Composite component methods.
    return componentName + '.' + phase;
  }
};

var beginFiberMark = function (fiber, phase) {
  var componentName = getComponentName(fiber.type) || 'Unknown';
  var debugID = fiber._debugID;
  var isMounted = fiber.alternate !== null;
  var label = getFiberLabel(componentName, isMounted, phase);

  if (isCommitting && labelsInCurrentCommit.has(label)) {
    // During the commit phase, we don't show duplicate labels because
    // there is a fixed overhead for every measurement, and we don't
    // want to stretch the commit phase beyond necessary.
    return false;
  }
  labelsInCurrentCommit.add(label);

  var markName = getFiberMarkName(label, debugID);
  beginMark(markName);
  return true;
};

var clearFiberMark = function (fiber, phase) {
  var componentName = getComponentName(fiber.type) || 'Unknown';
  var debugID = fiber._debugID;
  var isMounted = fiber.alternate !== null;
  var label = getFiberLabel(componentName, isMounted, phase);
  var markName = getFiberMarkName(label, debugID);
  clearMark(markName);
};

var endFiberMark = function (fiber, phase, warning) {
  var componentName = getComponentName(fiber.type) || 'Unknown';
  var debugID = fiber._debugID;
  var isMounted = fiber.alternate !== null;
  var label = getFiberLabel(componentName, isMounted, phase);
  var markName = getFiberMarkName(label, debugID);
  endMark(label, markName, warning);
};

var shouldIgnoreFiber = function (fiber) {
  // Host components should be skipped in the timeline.
  // We could check typeof fiber.type, but does this work with RN?
  switch (fiber.tag) {
    case HostRoot:
    case HostComponent:
    case HostText:
    case HostPortal:
    case Fragment:
    case ContextProvider:
    case ContextConsumer:
    case Mode:
      return true;
    default:
      return false;
  }
};

var clearPendingPhaseMeasurement = function () {
  if (currentPhase !== null && currentPhaseFiber !== null) {
    clearFiberMark(currentPhaseFiber, currentPhase);
  }
  currentPhaseFiber = null;
  currentPhase = null;
  hasScheduledUpdateInCurrentPhase = false;
};

var pauseTimers = function () {
  // Stops all currently active measurements so that they can be resumed
  // if we continue in a later deferred loop from the same unit of work.
  var fiber = currentFiber;
  while (fiber) {
    if (fiber._debugIsCurrentlyTiming) {
      endFiberMark(fiber, null, null);
    }
    fiber = fiber.return;
  }
};

var resumeTimersRecursively = function (fiber) {
  if (fiber.return !== null) {
    resumeTimersRecursively(fiber.return);
  }
  if (fiber._debugIsCurrentlyTiming) {
    beginFiberMark(fiber, null);
  }
};

var resumeTimers = function () {
  // Resumes all measurements that were active during the last deferred loop.
  if (currentFiber !== null) {
    resumeTimersRecursively(currentFiber);
  }
};

function recordEffect() {
  if (enableUserTimingAPI) {
    effectCountInCurrentCommit++;
  }
}

function recordScheduleUpdate() {
  if (enableUserTimingAPI) {
    if (isCommitting) {
      hasScheduledUpdateInCurrentCommit = true;
    }
    if (currentPhase !== null && currentPhase !== 'componentWillMount' && currentPhase !== 'componentWillReceiveProps') {
      hasScheduledUpdateInCurrentPhase = true;
    }
  }
}

function startRequestCallbackTimer() {
  if (enableUserTimingAPI) {
    if (supportsUserTiming && !isWaitingForCallback) {
      isWaitingForCallback = true;
      beginMark('(Waiting for async callback...)');
    }
  }
}

function stopRequestCallbackTimer(didExpire, expirationTime) {
  if (enableUserTimingAPI) {
    if (supportsUserTiming) {
      isWaitingForCallback = false;
      var warning = didExpire ? 'React was blocked by main thread' : null;
      endMark('(Waiting for async callback... will force flush in ' + expirationTime + ' ms)', '(Waiting for async callback...)', warning);
    }
  }
}

function startWorkTimer(fiber) {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
      return;
    }
    // If we pause, this is the fiber to unwind from.
    currentFiber = fiber;
    if (!beginFiberMark(fiber, null)) {
      return;
    }
    fiber._debugIsCurrentlyTiming = true;
  }
}

function cancelWorkTimer(fiber) {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
      return;
    }
    // Remember we shouldn't complete measurement for this fiber.
    // Otherwise flamechart will be deep even for small updates.
    fiber._debugIsCurrentlyTiming = false;
    clearFiberMark(fiber, null);
  }
}

function stopWorkTimer(fiber) {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
      return;
    }
    // If we pause, its parent is the fiber to unwind from.
    currentFiber = fiber.return;
    if (!fiber._debugIsCurrentlyTiming) {
      return;
    }
    fiber._debugIsCurrentlyTiming = false;
    endFiberMark(fiber, null, null);
  }
}

function stopFailedWorkTimer(fiber) {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
      return;
    }
    // If we pause, its parent is the fiber to unwind from.
    currentFiber = fiber.return;
    if (!fiber._debugIsCurrentlyTiming) {
      return;
    }
    fiber._debugIsCurrentlyTiming = false;
    var warning = fiber.tag === SuspenseComponent || fiber.tag === DehydratedSuspenseComponent ? 'Rendering was suspended' : 'An error was thrown inside this error boundary';
    endFiberMark(fiber, null, warning);
  }
}

function startPhaseTimer(fiber, phase) {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    clearPendingPhaseMeasurement();
    if (!beginFiberMark(fiber, phase)) {
      return;
    }
    currentPhaseFiber = fiber;
    currentPhase = phase;
  }
}

function stopPhaseTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    if (currentPhase !== null && currentPhaseFiber !== null) {
      var warning = hasScheduledUpdateInCurrentPhase ? 'Scheduled a cascading update' : null;
      endFiberMark(currentPhaseFiber, currentPhase, warning);
    }
    currentPhase = null;
    currentPhaseFiber = null;
  }
}

function startWorkLoopTimer(nextUnitOfWork) {
  if (enableUserTimingAPI) {
    currentFiber = nextUnitOfWork;
    if (!supportsUserTiming) {
      return;
    }
    commitCountInCurrentWorkLoop = 0;
    // This is top level call.
    // Any other measurements are performed within.
    beginMark('(React Tree Reconciliation)');
    // Resume any measurements that were in progress during the last loop.
    resumeTimers();
  }
}

function stopWorkLoopTimer(interruptedBy, didCompleteRoot) {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    var warning = null;
    if (interruptedBy !== null) {
      if (interruptedBy.tag === HostRoot) {
        warning = 'A top-level update interrupted the previous render';
      } else {
        var componentName = getComponentName(interruptedBy.type) || 'Unknown';
        warning = 'An update to ' + componentName + ' interrupted the previous render';
      }
    } else if (commitCountInCurrentWorkLoop > 1) {
      warning = 'There were cascading updates';
    }
    commitCountInCurrentWorkLoop = 0;
    var label = didCompleteRoot ? '(React Tree Reconciliation: Completed Root)' : '(React Tree Reconciliation: Yielded)';
    // Pause any measurements until the next loop.
    pauseTimers();
    endMark(label, '(React Tree Reconciliation)', warning);
  }
}

function startCommitTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    isCommitting = true;
    hasScheduledUpdateInCurrentCommit = false;
    labelsInCurrentCommit.clear();
    beginMark('(Committing Changes)');
  }
}

function stopCommitTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }

    var warning = null;
    if (hasScheduledUpdateInCurrentCommit) {
      warning = 'Lifecycle hook scheduled a cascading update';
    } else if (commitCountInCurrentWorkLoop > 0) {
      warning = 'Caused by a cascading update in earlier commit';
    }
    hasScheduledUpdateInCurrentCommit = false;
    commitCountInCurrentWorkLoop++;
    isCommitting = false;
    labelsInCurrentCommit.clear();

    endMark('(Committing Changes)', '(Committing Changes)', warning);
  }
}

function startCommitSnapshotEffectsTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    effectCountInCurrentCommit = 0;
    beginMark('(Committing Snapshot Effects)');
  }
}

function stopCommitSnapshotEffectsTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    var count = effectCountInCurrentCommit;
    effectCountInCurrentCommit = 0;
    endMark('(Committing Snapshot Effects: ' + count + ' Total)', '(Committing Snapshot Effects)', null);
  }
}

function startCommitHostEffectsTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    effectCountInCurrentCommit = 0;
    beginMark('(Committing Host Effects)');
  }
}

function stopCommitHostEffectsTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    var count = effectCountInCurrentCommit;
    effectCountInCurrentCommit = 0;
    endMark('(Committing Host Effects: ' + count + ' Total)', '(Committing Host Effects)', null);
  }
}

function startCommitLifeCyclesTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    effectCountInCurrentCommit = 0;
    beginMark('(Calling Lifecycle Methods)');
  }
}

function stopCommitLifeCyclesTimer() {
  if (enableUserTimingAPI) {
    if (!supportsUserTiming) {
      return;
    }
    var count = effectCountInCurrentCommit;
    effectCountInCurrentCommit = 0;
    endMark('(Calling Lifecycle Methods: ' + count + ' Total)', '(Calling Lifecycle Methods)', null);
  }
}

var valueStack = [];

var fiberStack = void 0;

{
  fiberStack = [];
}

var index = -1;

function createCursor(defaultValue) {
  return {
    current: defaultValue
  };
}

function pop(cursor, fiber) {
  if (index < 0) {
    {
      warningWithoutStack$1(false, 'Unexpected pop.');
    }
    return;
  }

  {
    if (fiber !== fiberStack[index]) {
      warningWithoutStack$1(false, 'Unexpected Fiber popped.');
    }
  }

  cursor.current = valueStack[index];

  valueStack[index] = null;

  {
    fiberStack[index] = null;
  }

  index--;
}

function push(cursor, value, fiber) {
  index++;

  valueStack[index] = cursor.current;

  {
    fiberStack[index] = fiber;
  }

  cursor.current = value;
}

function checkThatStackIsEmpty() {
  {
    if (index !== -1) {
      warningWithoutStack$1(false, 'Expected an empty stack. Something was not reset properly.');
    }
  }
}

function resetStackAfterFatalErrorInDev() {
  {
    index = -1;
    valueStack.length = 0;
    fiberStack.length = 0;
  }
}

var warnedAboutMissingGetChildContext = void 0;

{
  warnedAboutMissingGetChildContext = {};
}

var emptyContextObject = {};
{
  Object.freeze(emptyContextObject);
}

// A cursor to the current merged context object on the stack.
var contextStackCursor = createCursor(emptyContextObject);
// A cursor to a boolean indicating whether the context has changed.
var didPerformWorkStackCursor = createCursor(false);
// Keep track of the previous context object that was on the stack.
// We use this to get access to the parent context after we have already
// pushed the next context provider, and now need to merge their contexts.
var previousContext = emptyContextObject;

function getUnmaskedContext(workInProgress, Component, didPushOwnContextIfProvider) {
  if (didPushOwnContextIfProvider && isContextProvider(Component)) {
    // If the fiber is a context provider itself, when we read its context
    // we may have already pushed its own child context on the stack. A context
    // provider should not "see" its own child context. Therefore we read the
    // previous (parent) context instead for a context provider.
    return previousContext;
  }
  return contextStackCursor.current;
}

function cacheContext(workInProgress, unmaskedContext, maskedContext) {
  var instance = workInProgress.stateNode;
  instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext;
  instance.__reactInternalMemoizedMaskedChildContext = maskedContext;
}

function getMaskedContext(workInProgress, unmaskedContext) {
  var type = workInProgress.type;
  var contextTypes = type.contextTypes;
  if (!contextTypes) {
    return emptyContextObject;
  }

  // Avoid recreating masked context unless unmasked context has changed.
  // Failing to do this will result in unnecessary calls to componentWillReceiveProps.
  // This may trigger infinite loops if componentWillReceiveProps calls setState.
  var instance = workInProgress.stateNode;
  if (instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext) {
    return instance.__reactInternalMemoizedMaskedChildContext;
  }

  var context = {};
  for (var key in contextTypes) {
    context[key] = unmaskedContext[key];
  }

  {
    var name = getComponentName(type) || 'Unknown';
    checkPropTypes(contextTypes, context, 'context', name, getCurrentFiberStackInDev);
  }

  // Cache unmasked context so we can avoid recreating masked context unless necessary.
  // Context is created before the class component is instantiated so check for instance.
  if (instance) {
    cacheContext(workInProgress, unmaskedContext, context);
  }

  return context;
}

function hasContextChanged() {
  return didPerformWorkStackCursor.current;
}

function isContextProvider(type) {
  var childContextTypes = type.childContextTypes;
  return childContextTypes !== null && childContextTypes !== undefined;
}

function popContext(fiber) {
  pop(didPerformWorkStackCursor, fiber);
  pop(contextStackCursor, fiber);
}

function popTopLevelContextObject(fiber) {
  pop(didPerformWorkStackCursor, fiber);
  pop(contextStackCursor, fiber);
}

function pushTopLevelContextObject(fiber, context, didChange) {
  !(contextStackCursor.current === emptyContextObject) ? invariant(false, 'Unexpected context found on stack. This error is likely caused by a bug in React. Please file an issue.') : void 0;

  push(contextStackCursor, context, fiber);
  push(didPerformWorkStackCursor, didChange, fiber);
}

function processChildContext(fiber, type, parentContext) {
  var instance = fiber.stateNode;
  var childContextTypes = type.childContextTypes;

  // TODO (bvaughn) Replace this behavior with an invariant() in the future.
  // It has only been added in Fiber to match the (unintentional) behavior in Stack.
  if (typeof instance.getChildContext !== 'function') {
    {
      var componentName = getComponentName(type) || 'Unknown';

      if (!warnedAboutMissingGetChildContext[componentName]) {
        warnedAboutMissingGetChildContext[componentName] = true;
        warningWithoutStack$1(false, '%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName);
      }
    }
    return parentContext;
  }

  var childContext = void 0;
  {
    setCurrentPhase('getChildContext');
  }
  startPhaseTimer(fiber, 'getChildContext');
  childContext = instance.getChildContext();
  stopPhaseTimer();
  {
    setCurrentPhase(null);
  }
  for (var contextKey in childContext) {
    !(contextKey in childContextTypes) ? invariant(false, '%s.getChildContext(): key "%s" is not defined in childContextTypes.', getComponentName(type) || 'Unknown', contextKey) : void 0;
  }
  {
    var name = getComponentName(type) || 'Unknown';
    checkPropTypes(childContextTypes, childContext, 'child context', name,
    // In practice, there is one case in which we won't get a stack. It's when
    // somebody calls unstable_renderSubtreeIntoContainer() and we process
    // context from the parent component instance. The stack will be missing
    // because it's outside of the reconciliation, and so the pointer has not
    // been set. This is rare and doesn't matter. We'll also remove that API.
    getCurrentFiberStackInDev);
  }

  return _assign({}, parentContext, childContext);
}

function pushContextProvider(workInProgress) {
  var instance = workInProgress.stateNode;
  // We push the context as early as possible to ensure stack integrity.
  // If the instance does not exist yet, we will push null at first,
  // and replace it on the stack later when invalidating the context.
  var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject;

  // Remember the parent context so we can merge with it later.
  // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates.
  previousContext = contextStackCursor.current;
  push(contextStackCursor, memoizedMergedChildContext, workInProgress);
  push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress);

  return true;
}

function invalidateContextProvider(workInProgress, type, didChange) {
  var instance = workInProgress.stateNode;
  !instance ? invariant(false, 'Expected to have an instance by this point. This error is likely caused by a bug in React. Please file an issue.') : void 0;

  if (didChange) {
    // Merge parent and own context.
    // Skip this if we're not updating due to sCU.
    // This avoids unnecessarily recomputing memoized values.
    var mergedContext = processChildContext(workInProgress, type, previousContext);
    instance.__reactInternalMemoizedMergedChildContext = mergedContext;

    // Replace the old (or empty) context with the new one.
    // It is important to unwind the context in the reverse order.
    pop(didPerformWorkStackCursor, workInProgress);
    pop(contextStackCursor, workInProgress);
    // Now push the new context and mark that it has changed.
    push(contextStackCursor, mergedContext, workInProgress);
    push(didPerformWorkStackCursor, didChange, workInProgress);
  } else {
    pop(didPerformWorkStackCursor, workInProgress);
    push(didPerformWorkStackCursor, didChange, workInProgress);
  }
}

function findCurrentUnmaskedContext(fiber) {
  // Currently this is only used with renderSubtreeIntoContainer; not sure if it
  // makes sense elsewhere
  !(isFiberMounted(fiber) && fiber.tag === ClassComponent) ? invariant(false, 'Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue.') : void 0;

  var node = fiber;
  do {
    switch (node.tag) {
      case HostRoot:
        return node.stateNode.context;
      case ClassComponent:
        {
          var Component = node.type;
          if (isContextProvider(Component)) {
            return node.stateNode.__reactInternalMemoizedMergedChildContext;
          }
          break;
        }
    }
    node = node.return;
  } while (node !== null);
  invariant(false, 'Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue.');
}

var onCommitFiberRoot = null;
var onCommitFiberUnmount = null;
var hasLoggedError = false;

function catchErrors(fn) {
  return function (arg) {
    try {
      return fn(arg);
    } catch (err) {
      if (true && !hasLoggedError) {
        hasLoggedError = true;
        warningWithoutStack$1(false, 'React DevTools encountered an error: %s', err);
      }
    }
  };
}

var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined';

function injectInternals(internals) {
  if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') {
    // No DevTools
    return false;
  }
  var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__;
  if (hook.isDisabled) {
    // This isn't a real property on the hook, but it can be set to opt out
    // of DevTools integration and associated warnings and logs.
    // https://github.com/facebook/react/issues/3877
    return true;
  }
  if (!hook.supportsFiber) {
    {
      warningWithoutStack$1(false, 'The installed version of React DevTools is too old and will not work ' + 'with the current version of React. Please update React DevTools. ' + 'https://fb.me/react-devtools');
    }
    // DevTools exists, even though it doesn't support Fiber.
    return true;
  }
  try {
    var rendererID = hook.inject(internals);
    // We have successfully injected, so now it is safe to set up hooks.
    onCommitFiberRoot = catchErrors(function (root) {
      return hook.onCommitFiberRoot(rendererID, root);
    });
    onCommitFiberUnmount = catchErrors(function (fiber) {
      return hook.onCommitFiberUnmount(rendererID, fiber);
    });
  } catch (err) {
    // Catch all errors because it is unsafe to throw during initialization.
    {
      warningWithoutStack$1(false, 'React DevTools encountered an error: %s.', err);
    }
  }
  // DevTools exists
  return true;
}

function onCommitRoot(root) {
  if (typeof onCommitFiberRoot === 'function') {
    onCommitFiberRoot(root);
  }
}

function onCommitUnmount(fiber) {
  if (typeof onCommitFiberUnmount === 'function') {
    onCommitFiberUnmount(fiber);
  }
}

// Max 31 bit integer. The max integer size in V8 for 32-bit systems.
// Math.pow(2, 30) - 1
// 0b111111111111111111111111111111
var maxSigned31BitInt = 1073741823;

var NoWork = 0;
var Never = 1;
var Sync = maxSigned31BitInt;

var UNIT_SIZE = 10;
var MAGIC_NUMBER_OFFSET = maxSigned31BitInt - 1;

// 1 unit of expiration time represents 10ms.
function msToExpirationTime(ms) {
  // Always add an offset so that we don't clash with the magic number for NoWork.
  return MAGIC_NUMBER_OFFSET - (ms / UNIT_SIZE | 0);
}

function expirationTimeToMs(expirationTime) {
  return (MAGIC_NUMBER_OFFSET - expirationTime) * UNIT_SIZE;
}

function ceiling(num, precision) {
  return ((num / precision | 0) + 1) * precision;
}

function computeExpirationBucket(currentTime, expirationInMs, bucketSizeMs) {
  return MAGIC_NUMBER_OFFSET - ceiling(MAGIC_NUMBER_OFFSET - currentTime + expirationInMs / UNIT_SIZE, bucketSizeMs / UNIT_SIZE);
}

var LOW_PRIORITY_EXPIRATION = 5000;
var LOW_PRIORITY_BATCH_SIZE = 250;

function computeAsyncExpiration(currentTime) {
  return computeExpirationBucket(currentTime, LOW_PRIORITY_EXPIRATION, LOW_PRIORITY_BATCH_SIZE);
}

// We intentionally set a higher expiration time for interactive updates in
// dev than in production.
//
// If the main thread is being blocked so long that you hit the expiration,
// it's a problem that could be solved with better scheduling.
//
// People will be more likely to notice this and fix it with the long
// expiration time in development.
//
// In production we opt for better UX at the risk of masking scheduling
// problems, by expiring fast.
var HIGH_PRIORITY_EXPIRATION = 500;
var HIGH_PRIORITY_BATCH_SIZE = 100;

function computeInteractiveExpiration(currentTime) {
  return computeExpirationBucket(currentTime, HIGH_PRIORITY_EXPIRATION, HIGH_PRIORITY_BATCH_SIZE);
}

var NoContext = 0;
var ConcurrentMode = 1;
var StrictMode = 2;
var ProfileMode = 4;

var hasBadMapPolyfill = void 0;

{
  hasBadMapPolyfill = false;
  try {
    var nonExtensibleObject = Object.preventExtensions({});
    var testMap = new Map([[nonExtensibleObject, null]]);
    var testSet = new Set([nonExtensibleObject]);
    // This is necessary for Rollup to not consider these unused.
    // https://github.com/rollup/rollup/issues/1771
    // TODO: we can remove these if Rollup fixes the bug.
    testMap.set(0, 0);
    testSet.add(0);
  } catch (e) {
    // TODO: Consider warning about bad polyfills
    hasBadMapPolyfill = true;
  }
}

// A Fiber is work on a Component that needs to be done or was done. There can
// be more than one per component.


var debugCounter = void 0;

{
  debugCounter = 1;
}

function FiberNode(tag, pendingProps, key, mode) {
  // Instance
  this.tag = tag;
  this.key = key;
  this.elementType = null;
  this.type = null;
  this.stateNode = null;

  // Fiber
  this.return = null;
  this.child = null;
  this.sibling = null;
  this.index = 0;

  this.ref = null;

  this.pendingProps = pendingProps;
  this.memoizedProps = null;
  this.updateQueue = null;
  this.memoizedState = null;
  this.contextDependencies = null;

  this.mode = mode;

  // Effects
  this.effectTag = NoEffect;
  this.nextEffect = null;

  this.firstEffect = null;
  this.lastEffect = null;

  this.expirationTime = NoWork;
  this.childExpirationTime = NoWork;

  this.alternate = null;

  if (enableProfilerTimer) {
    // Note: The following is done to avoid a v8 performance cliff.
    //
    // Initializing the fields below to smis and later updating them with
    // double values will cause Fibers to end up having separate shapes.
    // This behavior/bug has something to do with Object.preventExtension().
    // Fortunately this only impacts DEV builds.
    // Unfortunately it makes React unusably slow for some applications.
    // To work around this, initialize the fields below with doubles.
    //
    // Learn more about this here:
    // https://github.com/facebook/react/issues/14365
    // https://bugs.chromium.org/p/v8/issues/detail?id=8538
    this.actualDuration = Number.NaN;
    this.actualStartTime = Number.NaN;
    this.selfBaseDuration = Number.NaN;
    this.treeBaseDuration = Number.NaN;

    // It's okay to replace the initial doubles with smis after initialization.
    // This won't trigger the performance cliff mentioned above,
    // and it simplifies other profiler code (including DevTools).
    this.actualDuration = 0;
    this.actualStartTime = -1;
    this.selfBaseDuration = 0;
    this.treeBaseDuration = 0;
  }

  {
    this._debugID = debugCounter++;
    this._debugSource = null;
    this._debugOwner = null;
    this._debugIsCurrentlyTiming = false;
    if (!hasBadMapPolyfill && typeof Object.preventExtensions === 'function') {
      Object.preventExtensions(this);
    }
  }
}

// This is a constructor function, rather than a POJO constructor, still
// please ensure we do the following:
// 1) Nobody should add any instance methods on this. Instance methods can be
//    more difficult to predict when they get optimized and they are almost
//    never inlined properly in static compilers.
// 2) Nobody should rely on `instanceof Fiber` for type testing. We should
//    always know when it is a fiber.
// 3) We might want to experiment with using numeric keys since they are easier
//    to optimize in a non-JIT environment.
// 4) We can easily go from a constructor to a createFiber object literal if that
//    is faster.
// 5) It should be easy to port this to a C struct and keep a C implementation
//    compatible.
var createFiber = function (tag, pendingProps, key, mode) {
  // $FlowFixMe: the shapes are exact here but Flow doesn't like constructors
  return new FiberNode(tag, pendingProps, key, mode);
};

function shouldConstruct(Component) {
  var prototype = Component.prototype;
  return !!(prototype && prototype.isReactComponent);
}

function isSimpleFunctionComponent(type) {
  return typeof type === 'function' && !shouldConstruct(type) && type.defaultProps === undefined;
}

function resolveLazyComponentTag(Component) {
  if (typeof Component === 'function') {
    return shouldConstruct(Component) ? ClassComponent : FunctionComponent;
  } else if (Component !== undefined && Component !== null) {
    var $$typeof = Component.$$typeof;
    if ($$typeof === REACT_FORWARD_REF_TYPE) {
      return ForwardRef;
    }
    if ($$typeof === REACT_MEMO_TYPE) {
      return MemoComponent;
    }
  }
  return IndeterminateComponent;
}

// This is used to create an alternate fiber to do work on.
function createWorkInProgress(current, pendingProps, expirationTime) {
  var workInProgress = current.alternate;
  if (workInProgress === null) {
    // We use a double buffering pooling technique because we know that we'll
    // only ever need at most two versions of a tree. We pool the "other" unused
    // node that we're free to reuse. This is lazily created to avoid allocating
    // extra objects for things that are never updated. It also allow us to
    // reclaim the extra memory if needed.
    workInProgress = createFiber(current.tag, pendingProps, current.key, current.mode);
    workInProgress.elementType = current.elementType;
    workInProgress.type = current.type;
    workInProgress.stateNode = current.stateNode;

    {
      // DEV-only fields
      workInProgress._debugID = current._debugID;
      workInProgress._debugSource = current._debugSource;
      workInProgress._debugOwner = current._debugOwner;
    }

    workInProgress.alternate = current;
    current.alternate = workInProgress;
  } else {
    workInProgress.pendingProps = pendingProps;

    // We already have an alternate.
    // Reset the effect tag.
    workInProgress.effectTag = NoEffect;

    // The effect list is no longer valid.
    workInProgress.nextEffect = null;
    workInProgress.firstEffect = null;
    workInProgress.lastEffect = null;

    if (enableProfilerTimer) {
      // We intentionally reset, rather than copy, actualDuration & actualStartTime.
      // This prevents time from endlessly accumulating in new commits.
      // This has the downside of resetting values for different priority renders,
      // But works for yielding (the common case) and should support resuming.
      workInProgress.actualDuration = 0;
      workInProgress.actualStartTime = -1;
    }
  }

  workInProgress.childExpirationTime = current.childExpirationTime;
  workInProgress.expirationTime = current.expirationTime;

  workInProgress.child = current.child;
  workInProgress.memoizedProps = current.memoizedProps;
  workInProgress.memoizedState = current.memoizedState;
  workInProgress.updateQueue = current.updateQueue;
  workInProgress.contextDependencies = current.contextDependencies;

  // These will be overridden during the parent's reconciliation
  workInProgress.sibling = current.sibling;
  workInProgress.index = current.index;
  workInProgress.ref = current.ref;

  if (enableProfilerTimer) {
    workInProgress.selfBaseDuration = current.selfBaseDuration;
    workInProgress.treeBaseDuration = current.treeBaseDuration;
  }

  return workInProgress;
}

function createHostRootFiber(isConcurrent) {
  var mode = isConcurrent ? ConcurrentMode | StrictMode : NoContext;

  if (enableProfilerTimer && isDevToolsPresent) {
    // Always collect profile timings when DevTools are present.
    // This enables DevTools to start capturing timing at any point–
    // Without some nodes in the tree having empty base times.
    mode |= ProfileMode;
  }

  return createFiber(HostRoot, null, null, mode);
}

function createFiberFromTypeAndProps(type, // React$ElementType
key, pendingProps, owner, mode, expirationTime) {
  var fiber = void 0;

  var fiberTag = IndeterminateComponent;
  // The resolved type is set if we know what the final type will be. I.e. it's not lazy.
  var resolvedType = type;
  if (typeof type === 'function') {
    if (shouldConstruct(type)) {
      fiberTag = ClassComponent;
    }
  } else if (typeof type === 'string') {
    fiberTag = HostComponent;
  } else {
    getTag: switch (type) {
      case REACT_FRAGMENT_TYPE:
        return createFiberFromFragment(pendingProps.children, mode, expirationTime, key);
      case REACT_CONCURRENT_MODE_TYPE:
        return createFiberFromMode(pendingProps, mode | ConcurrentMode | StrictMode, expirationTime, key);
      case REACT_STRICT_MODE_TYPE:
        return createFiberFromMode(pendingProps, mode | StrictMode, expirationTime, key);
      case REACT_PROFILER_TYPE:
        return createFiberFromProfiler(pendingProps, mode, expirationTime, key);
      case REACT_SUSPENSE_TYPE:
        return createFiberFromSuspense(pendingProps, mode, expirationTime, key);
      default:
        {
          if (typeof type === 'object' && type !== null) {
            switch (type.$$typeof) {
              case REACT_PROVIDER_TYPE:
                fiberTag = ContextProvider;
                break getTag;
              case REACT_CONTEXT_TYPE:
                // This is a consumer
                fiberTag = ContextConsumer;
                break getTag;
              case REACT_FORWARD_REF_TYPE:
                fiberTag = ForwardRef;
                break getTag;
              case REACT_MEMO_TYPE:
                fiberTag = MemoComponent;
                break getTag;
              case REACT_LAZY_TYPE:
                fiberTag = LazyComponent;
                resolvedType = null;
                break getTag;
            }
          }
          var info = '';
          {
            if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
              info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.';
            }
            var ownerName = owner ? getComponentName(owner.type) : null;
            if (ownerName) {
              info += '\n\nCheck the render method of `' + ownerName + '`.';
            }
          }
          invariant(false, 'Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: %s.%s', type == null ? type : typeof type, info);
        }
    }
  }

  fiber = createFiber(fiberTag, pendingProps, key, mode);
  fiber.elementType = type;
  fiber.type = resolvedType;
  fiber.expirationTime = expirationTime;

  return fiber;
}

function createFiberFromElement(element, mode, expirationTime) {
  var owner = null;
  {
    owner = element._owner;
  }
  var type = element.type;
  var key = element.key;
  var pendingProps = element.props;
  var fiber = createFiberFromTypeAndProps(type, key, pendingProps, owner, mode, expirationTime);
  {
    fiber._debugSource = element._source;
    fiber._debugOwner = element._owner;
  }
  return fiber;
}

function createFiberFromFragment(elements, mode, expirationTime, key) {
  var fiber = createFiber(Fragment, elements, key, mode);
  fiber.expirationTime = expirationTime;
  return fiber;
}

function createFiberFromProfiler(pendingProps, mode, expirationTime, key) {
  {
    if (typeof pendingProps.id !== 'string' || typeof pendingProps.onRender !== 'function') {
      warningWithoutStack$1(false, 'Profiler must specify an "id" string and "onRender" function as props');
    }
  }

  var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode);
  // TODO: The Profiler fiber shouldn't have a type. It has a tag.
  fiber.elementType = REACT_PROFILER_TYPE;
  fiber.type = REACT_PROFILER_TYPE;
  fiber.expirationTime = expirationTime;

  return fiber;
}

function createFiberFromMode(pendingProps, mode, expirationTime, key) {
  var fiber = createFiber(Mode, pendingProps, key, mode);

  // TODO: The Mode fiber shouldn't have a type. It has a tag.
  var type = (mode & ConcurrentMode) === NoContext ? REACT_STRICT_MODE_TYPE : REACT_CONCURRENT_MODE_TYPE;
  fiber.elementType = type;
  fiber.type = type;

  fiber.expirationTime = expirationTime;
  return fiber;
}

function createFiberFromSuspense(pendingProps, mode, expirationTime, key) {
  var fiber = createFiber(SuspenseComponent, pendingProps, key, mode);

  // TODO: The SuspenseComponent fiber shouldn't have a type. It has a tag.
  var type = REACT_SUSPENSE_TYPE;
  fiber.elementType = type;
  fiber.type = type;

  fiber.expirationTime = expirationTime;
  return fiber;
}

function createFiberFromText(content, mode, expirationTime) {
  var fiber = createFiber(HostText, content, null, mode);
  fiber.expirationTime = expirationTime;
  return fiber;
}

function createFiberFromHostInstanceForDeletion() {
  var fiber = createFiber(HostComponent, null, null, NoContext);
  // TODO: These should not need a type.
  fiber.elementType = 'DELETED';
  fiber.type = 'DELETED';
  return fiber;
}

function createFiberFromPortal(portal, mode, expirationTime) {
  var pendingProps = portal.children !== null ? portal.children : [];
  var fiber = createFiber(HostPortal, pendingProps, portal.key, mode);
  fiber.expirationTime = expirationTime;
  fiber.stateNode = {
    containerInfo: portal.containerInfo,
    pendingChildren: null, // Used by persistent updates
    implementation: portal.implementation
  };
  return fiber;
}

// Used for stashing WIP properties to replay failed work in DEV.
function assignFiberPropertiesInDEV(target, source) {
  if (target === null) {
    // This Fiber's initial properties will always be overwritten.
    // We only use a Fiber to ensure the same hidden class so DEV isn't slow.
    target = createFiber(IndeterminateComponent, null, null, NoContext);
  }

  // This is intentionally written as a list of all properties.
  // We tried to use Object.assign() instead but this is called in
  // the hottest path, and Object.assign() was too slow:
  // https://github.com/facebook/react/issues/12502
  // This code is DEV-only so size is not a concern.

  target.tag = source.tag;
  target.key = source.key;
  target.elementType = source.elementType;
  target.type = source.type;
  target.stateNode = source.stateNode;
  target.return = source.return;
  target.child = source.child;
  target.sibling = source.sibling;
  target.index = source.index;
  target.ref = source.ref;
  target.pendingProps = source.pendingProps;
  target.memoizedProps = source.memoizedProps;
  target.updateQueue = source.updateQueue;
  target.memoizedState = source.memoizedState;
  target.contextDependencies = source.contextDependencies;
  target.mode = source.mode;
  target.effectTag = source.effectTag;
  target.nextEffect = source.nextEffect;
  target.firstEffect = source.firstEffect;
  target.lastEffect = source.lastEffect;
  target.expirationTime = source.expirationTime;
  target.childExpirationTime = source.childExpirationTime;
  target.alternate = source.alternate;
  if (enableProfilerTimer) {
    target.actualDuration = source.actualDuration;
    target.actualStartTime = source.actualStartTime;
    target.selfBaseDuration = source.selfBaseDuration;
    target.treeBaseDuration = source.treeBaseDuration;
  }
  target._debugID = source._debugID;
  target._debugSource = source._debugSource;
  target._debugOwner = source._debugOwner;
  target._debugIsCurrentlyTiming = source._debugIsCurrentlyTiming;
  return target;
}

// TODO: This should be lifted into the renderer.


// The following attributes are only used by interaction tracing builds.
// They enable interactions to be associated with their async work,
// And expose interaction metadata to the React DevTools Profiler plugin.
// Note that these attributes are only defined when the enableSchedulerTracing flag is enabled.


// Exported FiberRoot type includes all properties,
// To avoid requiring potentially error-prone :any casts throughout the project.
// Profiling properties are only safe to access in profiling builds (when enableSchedulerTracing is true).
// The types are defined separately within this file to ensure they stay in sync.
// (We don't have to use an inline :any cast when enableSchedulerTracing is disabled.)


function createFiberRoot(containerInfo, isConcurrent, hydrate) {
  // Cyclic construction. This cheats the type system right now because
  // stateNode is any.
  var uninitializedFiber = createHostRootFiber(isConcurrent);

  var root = void 0;
  if (enableSchedulerTracing) {
    root = {
      current: uninitializedFiber,
      containerInfo: containerInfo,
      pendingChildren: null,

      earliestPendingTime: NoWork,
      latestPendingTime: NoWork,
      earliestSuspendedTime: NoWork,
      latestSuspendedTime: NoWork,
      latestPingedTime: NoWork,

      pingCache: null,

      didError: false,

      pendingCommitExpirationTime: NoWork,
      finishedWork: null,
      timeoutHandle: noTimeout,
      context: null,
      pendingContext: null,
      hydrate: hydrate,
      nextExpirationTimeToWorkOn: NoWork,
      expirationTime: NoWork,
      firstBatch: null,
      nextScheduledRoot: null,

      interactionThreadID: tracing.unstable_getThreadID(),
      memoizedInteractions: new Set(),
      pendingInteractionMap: new Map()
    };
  } else {
    root = {
      current: uninitializedFiber,
      containerInfo: containerInfo,
      pendingChildren: null,

      pingCache: null,

      earliestPendingTime: NoWork,
      latestPendingTime: NoWork,
      earliestSuspendedTime: NoWork,
      latestSuspendedTime: NoWork,
      latestPingedTime: NoWork,

      didError: false,

      pendingCommitExpirationTime: NoWork,
      finishedWork: null,
      timeoutHandle: noTimeout,
      context: null,
      pendingContext: null,
      hydrate: hydrate,
      nextExpirationTimeToWorkOn: NoWork,
      expirationTime: NoWork,
      firstBatch: null,
      nextScheduledRoot: null
    };
  }

  uninitializedFiber.stateNode = root;

  // The reason for the way the Flow types are structured in this file,
  // Is to avoid needing :any casts everywhere interaction tracing fields are used.
  // Unfortunately that requires an :any cast for non-interaction tracing capable builds.
  // $FlowFixMe Remove this :any cast and replace it with something better.
  return root;
}

/**
 * Forked from fbjs/warning:
 * https://github.com/facebook/fbjs/blob/e66ba20ad5be433eb54423f2b097d829324d9de6/packages/fbjs/src/__forks__/warning.js
 *
 * Only change is we use console.warn instead of console.error,
 * and do nothing when 'console' is not supported.
 * This really simplifies the code.
 * ---
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var lowPriorityWarning = function () {};

{
  var printWarning = function (format) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    var argIndex = 0;
    var message = 'Warning: ' + format.replace(/%s/g, function () {
      return args[argIndex++];
    });
    if (typeof console !== 'undefined') {
      console.warn(message);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      throw new Error(message);
    } catch (x) {}
  };

  lowPriorityWarning = function (condition, format) {
    if (format === undefined) {
      throw new Error('`lowPriorityWarning(condition, format, ...args)` requires a warning ' + 'message argument');
    }
    if (!condition) {
      for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
        args[_key2 - 2] = arguments[_key2];
      }

      printWarning.apply(undefined, [format].concat(args));
    }
  };
}

var lowPriorityWarning$1 = lowPriorityWarning;

var ReactStrictModeWarnings = {
  discardPendingWarnings: function () {},
  flushPendingDeprecationWarnings: function () {},
  flushPendingUnsafeLifecycleWarnings: function () {},
  recordDeprecationWarnings: function (fiber, instance) {},
  recordUnsafeLifecycleWarnings: function (fiber, instance) {},
  recordLegacyContextWarning: function (fiber, instance) {},
  flushLegacyContextWarning: function () {}
};

{
  var LIFECYCLE_SUGGESTIONS = {
    UNSAFE_componentWillMount: 'componentDidMount',
    UNSAFE_componentWillReceiveProps: 'static getDerivedStateFromProps',
    UNSAFE_componentWillUpdate: 'componentDidUpdate'
  };

  var pendingComponentWillMountWarnings = [];
  var pendingComponentWillReceivePropsWarnings = [];
  var pendingComponentWillUpdateWarnings = [];
  var pendingUnsafeLifecycleWarnings = new Map();
  var pendingLegacyContextWarning = new Map();

  // Tracks components we have already warned about.
  var didWarnAboutDeprecatedLifecycles = new Set();
  var didWarnAboutUnsafeLifecycles = new Set();
  var didWarnAboutLegacyContext = new Set();

  var setToSortedString = function (set) {
    var array = [];
    set.forEach(function (value) {
      array.push(value);
    });
    return array.sort().join(', ');
  };

  ReactStrictModeWarnings.discardPendingWarnings = function () {
    pendingComponentWillMountWarnings = [];
    pendingComponentWillReceivePropsWarnings = [];
    pendingComponentWillUpdateWarnings = [];
    pendingUnsafeLifecycleWarnings = new Map();
    pendingLegacyContextWarning = new Map();
  };

  ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function () {
    pendingUnsafeLifecycleWarnings.forEach(function (lifecycleWarningsMap, strictRoot) {
      var lifecyclesWarningMessages = [];

      Object.keys(lifecycleWarningsMap).forEach(function (lifecycle) {
        var lifecycleWarnings = lifecycleWarningsMap[lifecycle];
        if (lifecycleWarnings.length > 0) {
          var componentNames = new Set();
          lifecycleWarnings.forEach(function (fiber) {
            componentNames.add(getComponentName(fiber.type) || 'Component');
            didWarnAboutUnsafeLifecycles.add(fiber.type);
          });

          var formatted = lifecycle.replace('UNSAFE_', '');
          var suggestion = LIFECYCLE_SUGGESTIONS[lifecycle];
          var sortedComponentNames = setToSortedString(componentNames);

          lifecyclesWarningMessages.push(formatted + ': Please update the following components to use ' + (suggestion + ' instead: ' + sortedComponentNames));
        }
      });

      if (lifecyclesWarningMessages.length > 0) {
        var strictRootComponentStack = getStackByFiberInDevAndProd(strictRoot);

        warningWithoutStack$1(false, 'Unsafe lifecycle methods were found within a strict-mode tree:%s' + '\n\n%s' + '\n\nLearn more about this warning here:' + '\nhttps://fb.me/react-strict-mode-warnings', strictRootComponentStack, lifecyclesWarningMessages.join('\n\n'));
      }
    });

    pendingUnsafeLifecycleWarnings = new Map();
  };

  var findStrictRoot = function (fiber) {
    var maybeStrictRoot = null;

    var node = fiber;
    while (node !== null) {
      if (node.mode & StrictMode) {
        maybeStrictRoot = node;
      }
      node = node.return;
    }

    return maybeStrictRoot;
  };

  ReactStrictModeWarnings.flushPendingDeprecationWarnings = function () {
    if (pendingComponentWillMountWarnings.length > 0) {
      var uniqueNames = new Set();
      pendingComponentWillMountWarnings.forEach(function (fiber) {
        uniqueNames.add(getComponentName(fiber.type) || 'Component');
        didWarnAboutDeprecatedLifecycles.add(fiber.type);
      });

      var sortedNames = setToSortedString(uniqueNames);

      lowPriorityWarning$1(false, 'componentWillMount is deprecated and will be removed in the next major version. ' + 'Use componentDidMount instead. As a temporary workaround, ' + 'you can rename to UNSAFE_componentWillMount.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here:' + '\nhttps://fb.me/react-async-component-lifecycle-hooks', sortedNames);

      pendingComponentWillMountWarnings = [];
    }

    if (pendingComponentWillReceivePropsWarnings.length > 0) {
      var _uniqueNames = new Set();
      pendingComponentWillReceivePropsWarnings.forEach(function (fiber) {
        _uniqueNames.add(getComponentName(fiber.type) || 'Component');
        didWarnAboutDeprecatedLifecycles.add(fiber.type);
      });

      var _sortedNames = setToSortedString(_uniqueNames);

      lowPriorityWarning$1(false, 'componentWillReceiveProps is deprecated and will be removed in the next major version. ' + 'Use static getDerivedStateFromProps instead.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here:' + '\nhttps://fb.me/react-async-component-lifecycle-hooks', _sortedNames);

      pendingComponentWillReceivePropsWarnings = [];
    }

    if (pendingComponentWillUpdateWarnings.length > 0) {
      var _uniqueNames2 = new Set();
      pendingComponentWillUpdateWarnings.forEach(function (fiber) {
        _uniqueNames2.add(getComponentName(fiber.type) || 'Component');
        didWarnAboutDeprecatedLifecycles.add(fiber.type);
      });

      var _sortedNames2 = setToSortedString(_uniqueNames2);

      lowPriorityWarning$1(false, 'componentWillUpdate is deprecated and will be removed in the next major version. ' + 'Use componentDidUpdate instead. As a temporary workaround, ' + 'you can rename to UNSAFE_componentWillUpdate.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here:' + '\nhttps://fb.me/react-async-component-lifecycle-hooks', _sortedNames2);

      pendingComponentWillUpdateWarnings = [];
    }
  };

  ReactStrictModeWarnings.recordDeprecationWarnings = function (fiber, instance) {
    // Dedup strategy: Warn once per component.
    if (didWarnAboutDeprecatedLifecycles.has(fiber.type)) {
      return;
    }

    // Don't warn about react-lifecycles-compat polyfilled components.
    if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) {
      pendingComponentWillMountWarnings.push(fiber);
    }
    if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) {
      pendingComponentWillReceivePropsWarnings.push(fiber);
    }
    if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) {
      pendingComponentWillUpdateWarnings.push(fiber);
    }
  };

  ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function (fiber, instance) {
    var strictRoot = findStrictRoot(fiber);
    if (strictRoot === null) {
      warningWithoutStack$1(false, 'Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.');
      return;
    }

    // Dedup strategy: Warn once per component.
    // This is difficult to track any other way since component names
    // are often vague and are likely to collide between 3rd party libraries.
    // An expand property is probably okay to use here since it's DEV-only,
    // and will only be set in the event of serious warnings.
    if (didWarnAboutUnsafeLifecycles.has(fiber.type)) {
      return;
    }

    var warningsForRoot = void 0;
    if (!pendingUnsafeLifecycleWarnings.has(strictRoot)) {
      warningsForRoot = {
        UNSAFE_componentWillMount: [],
        UNSAFE_componentWillReceiveProps: [],
        UNSAFE_componentWillUpdate: []
      };

      pendingUnsafeLifecycleWarnings.set(strictRoot, warningsForRoot);
    } else {
      warningsForRoot = pendingUnsafeLifecycleWarnings.get(strictRoot);
    }

    var unsafeLifecycles = [];
    if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true || typeof instance.UNSAFE_componentWillMount === 'function') {
      unsafeLifecycles.push('UNSAFE_componentWillMount');
    }
    if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true || typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
      unsafeLifecycles.push('UNSAFE_componentWillReceiveProps');
    }
    if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true || typeof instance.UNSAFE_componentWillUpdate === 'function') {
      unsafeLifecycles.push('UNSAFE_componentWillUpdate');
    }

    if (unsafeLifecycles.length > 0) {
      unsafeLifecycles.forEach(function (lifecycle) {
        warningsForRoot[lifecycle].push(fiber);
      });
    }
  };

  ReactStrictModeWarnings.recordLegacyContextWarning = function (fiber, instance) {
    var strictRoot = findStrictRoot(fiber);
    if (strictRoot === null) {
      warningWithoutStack$1(false, 'Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.');
      return;
    }

    // Dedup strategy: Warn once per component.
    if (didWarnAboutLegacyContext.has(fiber.type)) {
      return;
    }

    var warningsForRoot = pendingLegacyContextWarning.get(strictRoot);

    if (fiber.type.contextTypes != null || fiber.type.childContextTypes != null || instance !== null && typeof instance.getChildContext === 'function') {
      if (warningsForRoot === undefined) {
        warningsForRoot = [];
        pendingLegacyContextWarning.set(strictRoot, warningsForRoot);
      }
      warningsForRoot.push(fiber);
    }
  };

  ReactStrictModeWarnings.flushLegacyContextWarning = function () {
    pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) {
      var uniqueNames = new Set();
      fiberArray.forEach(function (fiber) {
        uniqueNames.add(getComponentName(fiber.type) || 'Component');
        didWarnAboutLegacyContext.add(fiber.type);
      });

      var sortedNames = setToSortedString(uniqueNames);
      var strictRootComponentStack = getStackByFiberInDevAndProd(strictRoot);

      warningWithoutStack$1(false, 'Legacy context API has been detected within a strict-mode tree: %s' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here:' + '\nhttps://fb.me/react-strict-mode-warnings', strictRootComponentStack, sortedNames);
    });
  };
}

// This lets us hook into Fiber to debug what it's doing.
// See https://github.com/facebook/react/pull/8033.
// This is not part of the public API, not even for React DevTools.
// You may only inject a debugTool if you work on React Fiber itself.
var ReactFiberInstrumentation = {
  debugTool: null
};

var ReactFiberInstrumentation_1 = ReactFiberInstrumentation;

// TODO: Offscreen updates should never suspend. However, a promise that
// suspended inside an offscreen subtree should be able to ping at the priority
// of the outer render.

function markPendingPriorityLevel(root, expirationTime) {
  // If there's a gap between completing a failed root and retrying it,
  // additional updates may be scheduled. Clear `didError`, in case the update
  // is sufficient to fix the error.
  root.didError = false;

  // Update the latest and earliest pending times
  var earliestPendingTime = root.earliestPendingTime;
  if (earliestPendingTime === NoWork) {
    // No other pending updates.
    root.earliestPendingTime = root.latestPendingTime = expirationTime;
  } else {
    if (earliestPendingTime < expirationTime) {
      // This is the earliest pending update.
      root.earliestPendingTime = expirationTime;
    } else {
      var latestPendingTime = root.latestPendingTime;
      if (latestPendingTime > expirationTime) {
        // This is the latest pending update
        root.latestPendingTime = expirationTime;
      }
    }
  }
  findNextExpirationTimeToWorkOn(expirationTime, root);
}

function markCommittedPriorityLevels(root, earliestRemainingTime) {
  root.didError = false;

  if (earliestRemainingTime === NoWork) {
    // Fast path. There's no remaining work. Clear everything.
    root.earliestPendingTime = NoWork;
    root.latestPendingTime = NoWork;
    root.earliestSuspendedTime = NoWork;
    root.latestSuspendedTime = NoWork;
    root.latestPingedTime = NoWork;
    findNextExpirationTimeToWorkOn(NoWork, root);
    return;
  }

  if (earliestRemainingTime < root.latestPingedTime) {
    root.latestPingedTime = NoWork;
  }

  // Let's see if the previous latest known pending level was just flushed.
  var latestPendingTime = root.latestPendingTime;
  if (latestPendingTime !== NoWork) {
    if (latestPendingTime > earliestRemainingTime) {
      // We've flushed all the known pending levels.
      root.earliestPendingTime = root.latestPendingTime = NoWork;
    } else {
      var earliestPendingTime = root.earliestPendingTime;
      if (earliestPendingTime > earliestRemainingTime) {
        // We've flushed the earliest known pending level. Set this to the
        // latest pending time.
        root.earliestPendingTime = root.latestPendingTime;
      }
    }
  }

  // Now let's handle the earliest remaining level in the whole tree. We need to
  // decide whether to treat it as a pending level or as suspended. Check
  // it falls within the range of known suspended levels.

  var earliestSuspendedTime = root.earliestSuspendedTime;
  if (earliestSuspendedTime === NoWork) {
    // There's no suspended work. Treat the earliest remaining level as a
    // pending level.
    markPendingPriorityLevel(root, earliestRemainingTime);
    findNextExpirationTimeToWorkOn(NoWork, root);
    return;
  }

  var latestSuspendedTime = root.latestSuspendedTime;
  if (earliestRemainingTime < latestSuspendedTime) {
    // The earliest remaining level is later than all the suspended work. That
    // means we've flushed all the suspended work.
    root.earliestSuspendedTime = NoWork;
    root.latestSuspendedTime = NoWork;
    root.latestPingedTime = NoWork;

    // There's no suspended work. Treat the earliest remaining level as a
    // pending level.
    markPendingPriorityLevel(root, earliestRemainingTime);
    findNextExpirationTimeToWorkOn(NoWork, root);
    return;
  }

  if (earliestRemainingTime > earliestSuspendedTime) {
    // The earliest remaining time is earlier than all the suspended work.
    // Treat it as a pending update.
    markPendingPriorityLevel(root, earliestRemainingTime);
    findNextExpirationTimeToWorkOn(NoWork, root);
    return;
  }

  // The earliest remaining time falls within the range of known suspended
  // levels. We should treat this as suspended work.
  findNextExpirationTimeToWorkOn(NoWork, root);
}

function hasLowerPriorityWork(root, erroredExpirationTime) {
  var latestPendingTime = root.latestPendingTime;
  var latestSuspendedTime = root.latestSuspendedTime;
  var latestPingedTime = root.latestPingedTime;
  return latestPendingTime !== NoWork && latestPendingTime < erroredExpirationTime || latestSuspendedTime !== NoWork && latestSuspendedTime < erroredExpirationTime || latestPingedTime !== NoWork && latestPingedTime < erroredExpirationTime;
}

function isPriorityLevelSuspended(root, expirationTime) {
  var earliestSuspendedTime = root.earliestSuspendedTime;
  var latestSuspendedTime = root.latestSuspendedTime;
  return earliestSuspendedTime !== NoWork && expirationTime <= earliestSuspendedTime && expirationTime >= latestSuspendedTime;
}

function markSuspendedPriorityLevel(root, suspendedTime) {
  root.didError = false;
  clearPing(root, suspendedTime);

  // First, check the known pending levels and update them if needed.
  var earliestPendingTime = root.earliestPendingTime;
  var latestPendingTime = root.latestPendingTime;
  if (earliestPendingTime === suspendedTime) {
    if (latestPendingTime === suspendedTime) {
      // Both known pending levels were suspended. Clear them.
      root.earliestPendingTime = root.latestPendingTime = NoWork;
    } else {
      // The earliest pending level was suspended. Clear by setting it to the
      // latest pending level.
      root.earliestPendingTime = latestPendingTime;
    }
  } else if (latestPendingTime === suspendedTime) {
    // The latest pending level was suspended. Clear by setting it to the
    // latest pending level.
    root.latestPendingTime = earliestPendingTime;
  }

  // Finally, update the known suspended levels.
  var earliestSuspendedTime = root.earliestSuspendedTime;
  var latestSuspendedTime = root.latestSuspendedTime;
  if (earliestSuspendedTime === NoWork) {
    // No other suspended levels.
    root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime;
  } else {
    if (earliestSuspendedTime < suspendedTime) {
      // This is the earliest suspended level.
      root.earliestSuspendedTime = suspendedTime;
    } else if (latestSuspendedTime > suspendedTime) {
      // This is the latest suspended level
      root.latestSuspendedTime = suspendedTime;
    }
  }

  findNextExpirationTimeToWorkOn(suspendedTime, root);
}

function markPingedPriorityLevel(root, pingedTime) {
  root.didError = false;

  // TODO: When we add back resuming, we need to ensure the progressed work
  // is thrown out and not reused during the restarted render. One way to
  // invalidate the progressed work is to restart at expirationTime + 1.
  var latestPingedTime = root.latestPingedTime;
  if (latestPingedTime === NoWork || latestPingedTime > pingedTime) {
    root.latestPingedTime = pingedTime;
  }
  findNextExpirationTimeToWorkOn(pingedTime, root);
}

function clearPing(root, completedTime) {
  var latestPingedTime = root.latestPingedTime;
  if (latestPingedTime >= completedTime) {
    root.latestPingedTime = NoWork;
  }
}

function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
  var earliestExpirationTime = renderExpirationTime;

  var earliestPendingTime = root.earliestPendingTime;
  var earliestSuspendedTime = root.earliestSuspendedTime;
  if (earliestPendingTime > earliestExpirationTime) {
    earliestExpirationTime = earliestPendingTime;
  }
  if (earliestSuspendedTime > earliestExpirationTime) {
    earliestExpirationTime = earliestSuspendedTime;
  }
  return earliestExpirationTime;
}

function didExpireAtExpirationTime(root, currentTime) {
  var expirationTime = root.expirationTime;
  if (expirationTime !== NoWork && currentTime <= expirationTime) {
    // The root has expired. Flush all work up to the current time.
    root.nextExpirationTimeToWorkOn = currentTime;
  }
}

function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
  var earliestSuspendedTime = root.earliestSuspendedTime;
  var latestSuspendedTime = root.latestSuspendedTime;
  var earliestPendingTime = root.earliestPendingTime;
  var latestPingedTime = root.latestPingedTime;

  // Work on the earliest pending time. Failing that, work on the latest
  // pinged time.
  var nextExpirationTimeToWorkOn = earliestPendingTime !== NoWork ? earliestPendingTime : latestPingedTime;

  // If there is no pending or pinged work, check if there's suspended work
  // that's lower priority than what we just completed.
  if (nextExpirationTimeToWorkOn === NoWork && (completedExpirationTime === NoWork || latestSuspendedTime < completedExpirationTime)) {
    // The lowest priority suspended work is the work most likely to be
    // committed next. Let's start rendering it again, so that if it times out,
    // it's ready to commit.
    nextExpirationTimeToWorkOn = latestSuspendedTime;
  }

  var expirationTime = nextExpirationTimeToWorkOn;
  if (expirationTime !== NoWork && earliestSuspendedTime > expirationTime) {
    // Expire using the earliest known expiration time.
    expirationTime = earliestSuspendedTime;
  }

  root.nextExpirationTimeToWorkOn = nextExpirationTimeToWorkOn;
  root.expirationTime = expirationTime;
}

function resolveDefaultProps(Component, baseProps) {
  if (Component && Component.defaultProps) {
    // Resolve default props. Taken from ReactElement
    var props = _assign({}, baseProps);
    var defaultProps = Component.defaultProps;
    for (var propName in defaultProps) {
      if (props[propName] === undefined) {
        props[propName] = defaultProps[propName];
      }
    }
    return props;
  }
  return baseProps;
}

function readLazyComponentType(lazyComponent) {
  var status = lazyComponent._status;
  var result = lazyComponent._result;
  switch (status) {
    case Resolved:
      {
        var Component = result;
        return Component;
      }
    case Rejected:
      {
        var error = result;
        throw error;
      }
    case Pending:
      {
        var thenable = result;
        throw thenable;
      }
    default:
      {
        lazyComponent._status = Pending;
        var ctor = lazyComponent._ctor;
        var _thenable = ctor();
        _thenable.then(function (moduleObject) {
          if (lazyComponent._status === Pending) {
            var defaultExport = moduleObject.default;
            {
              if (defaultExport === undefined) {
                warning$1(false, 'lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n  ' + "const MyComponent = lazy(() => import('./MyComponent'))", moduleObject);
              }
            }
            lazyComponent._status = Resolved;
            lazyComponent._result = defaultExport;
          }
        }, function (error) {
          if (lazyComponent._status === Pending) {
            lazyComponent._status = Rejected;
            lazyComponent._result = error;
          }
        });
        // Handle synchronous thenables.
        switch (lazyComponent._status) {
          case Resolved:
            return lazyComponent._result;
          case Rejected:
            throw lazyComponent._result;
        }
        lazyComponent._result = _thenable;
        throw _thenable;
      }
  }
}

var fakeInternalInstance = {};
var isArray$1 = Array.isArray;

// React.Component uses a shared frozen object by default.
// We'll use it to determine whether we need to initialize legacy refs.
var emptyRefsObject = new React.Component().refs;

var didWarnAboutStateAssignmentForComponent = void 0;
var didWarnAboutUninitializedState = void 0;
var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = void 0;
var didWarnAboutLegacyLifecyclesAndDerivedState = void 0;
var didWarnAboutUndefinedDerivedState = void 0;
var warnOnUndefinedDerivedState = void 0;
var warnOnInvalidCallback$1 = void 0;
var didWarnAboutDirectlyAssigningPropsToState = void 0;
var didWarnAboutContextTypeAndContextTypes = void 0;
var didWarnAboutInvalidateContextType = void 0;

{
  didWarnAboutStateAssignmentForComponent = new Set();
  didWarnAboutUninitializedState = new Set();
  didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set();
  didWarnAboutLegacyLifecyclesAndDerivedState = new Set();
  didWarnAboutDirectlyAssigningPropsToState = new Set();
  didWarnAboutUndefinedDerivedState = new Set();
  didWarnAboutContextTypeAndContextTypes = new Set();
  didWarnAboutInvalidateContextType = new Set();

  var didWarnOnInvalidCallback = new Set();

  warnOnInvalidCallback$1 = function (callback, callerName) {
    if (callback === null || typeof callback === 'function') {
      return;
    }
    var key = callerName + '_' + callback;
    if (!didWarnOnInvalidCallback.has(key)) {
      didWarnOnInvalidCallback.add(key);
      warningWithoutStack$1(false, '%s(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callerName, callback);
    }
  };

  warnOnUndefinedDerivedState = function (type, partialState) {
    if (partialState === undefined) {
      var componentName = getComponentName(type) || 'Component';
      if (!didWarnAboutUndefinedDerivedState.has(componentName)) {
        didWarnAboutUndefinedDerivedState.add(componentName);
        warningWithoutStack$1(false, '%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', componentName);
      }
    }
  };

  // This is so gross but it's at least non-critical and can be removed if
  // it causes problems. This is meant to give a nicer error message for
  // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component,
  // ...)) which otherwise throws a "_processChildContext is not a function"
  // exception.
  Object.defineProperty(fakeInternalInstance, '_processChildContext', {
    enumerable: false,
    value: function () {
      invariant(false, '_processChildContext is not available in React 16+. This likely means you have multiple copies of React and are attempting to nest a React 15 tree inside a React 16 tree using unstable_renderSubtreeIntoContainer, which isn\'t supported. Try to make sure you have only one copy of React (and ideally, switch to ReactDOM.createPortal).');
    }
  });
  Object.freeze(fakeInternalInstance);
}

function applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, nextProps) {
  var prevState = workInProgress.memoizedState;

  {
    if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
      // Invoke the function an extra time to help detect side-effects.
      getDerivedStateFromProps(nextProps, prevState);
    }
  }

  var partialState = getDerivedStateFromProps(nextProps, prevState);

  {
    warnOnUndefinedDerivedState(ctor, partialState);
  }
  // Merge the partial state and the previous state.
  var memoizedState = partialState === null || partialState === undefined ? prevState : _assign({}, prevState, partialState);
  workInProgress.memoizedState = memoizedState;

  // Once the update queue is empty, persist the derived state onto the
  // base state.
  var updateQueue = workInProgress.updateQueue;
  if (updateQueue !== null && workInProgress.expirationTime === NoWork) {
    updateQueue.baseState = memoizedState;
  }
}

var classComponentUpdater = {
  isMounted: isMounted,
  enqueueSetState: function (inst, payload, callback) {
    var fiber = get(inst);
    var currentTime = requestCurrentTime();
    var expirationTime = computeExpirationForFiber(currentTime, fiber);

    var update = createUpdate(expirationTime);
    update.payload = payload;
    if (callback !== undefined && callback !== null) {
      {
        warnOnInvalidCallback$1(callback, 'setState');
      }
      update.callback = callback;
    }

    flushPassiveEffects();
    enqueueUpdate(fiber, update);
    scheduleWork(fiber, expirationTime);
  },
  enqueueReplaceState: function (inst, payload, callback) {
    var fiber = get(inst);
    var currentTime = requestCurrentTime();
    var expirationTime = computeExpirationForFiber(currentTime, fiber);

    var update = createUpdate(expirationTime);
    update.tag = ReplaceState;
    update.payload = payload;

    if (callback !== undefined && callback !== null) {
      {
        warnOnInvalidCallback$1(callback, 'replaceState');
      }
      update.callback = callback;
    }

    flushPassiveEffects();
    enqueueUpdate(fiber, update);
    scheduleWork(fiber, expirationTime);
  },
  enqueueForceUpdate: function (inst, callback) {
    var fiber = get(inst);
    var currentTime = requestCurrentTime();
    var expirationTime = computeExpirationForFiber(currentTime, fiber);

    var update = createUpdate(expirationTime);
    update.tag = ForceUpdate;

    if (callback !== undefined && callback !== null) {
      {
        warnOnInvalidCallback$1(callback, 'forceUpdate');
      }
      update.callback = callback;
    }

    flushPassiveEffects();
    enqueueUpdate(fiber, update);
    scheduleWork(fiber, expirationTime);
  }
};

function checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) {
  var instance = workInProgress.stateNode;
  if (typeof instance.shouldComponentUpdate === 'function') {
    startPhaseTimer(workInProgress, 'shouldComponentUpdate');
    var shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext);
    stopPhaseTimer();

    {
      !(shouldUpdate !== undefined) ? warningWithoutStack$1(false, '%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', getComponentName(ctor) || 'Component') : void 0;
    }

    return shouldUpdate;
  }

  if (ctor.prototype && ctor.prototype.isPureReactComponent) {
    return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);
  }

  return true;
}

function checkClassInstance(workInProgress, ctor, newProps) {
  var instance = workInProgress.stateNode;
  {
    var name = getComponentName(ctor) || 'Component';
    var renderPresent = instance.render;

    if (!renderPresent) {
      if (ctor.prototype && typeof ctor.prototype.render === 'function') {
        warningWithoutStack$1(false, '%s(...): No `render` method found on the returned component ' + 'instance: did you accidentally return an object from the constructor?', name);
      } else {
        warningWithoutStack$1(false, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);
      }
    }

    var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;
    !noGetInitialStateOnES6 ? warningWithoutStack$1(false, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name) : void 0;
    var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;
    !noGetDefaultPropsOnES6 ? warningWithoutStack$1(false, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name) : void 0;
    var noInstancePropTypes = !instance.propTypes;
    !noInstancePropTypes ? warningWithoutStack$1(false, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name) : void 0;
    var noInstanceContextType = !instance.contextType;
    !noInstanceContextType ? warningWithoutStack$1(false, 'contextType was defined as an instance property on %s. Use a static ' + 'property to define contextType instead.', name) : void 0;
    var noInstanceContextTypes = !instance.contextTypes;
    !noInstanceContextTypes ? warningWithoutStack$1(false, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name) : void 0;

    if (ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor)) {
      didWarnAboutContextTypeAndContextTypes.add(ctor);
      warningWithoutStack$1(false, '%s declares both contextTypes and contextType static properties. ' + 'The legacy contextTypes property will be ignored.', name);
    }

    var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';
    !noComponentShouldUpdate ? warningWithoutStack$1(false, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name) : void 0;
    if (ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== 'undefined') {
      warningWithoutStack$1(false, '%s has a method called shouldComponentUpdate(). ' + 'shouldComponentUpdate should not be used when extending React.PureComponent. ' + 'Please extend React.Component if shouldComponentUpdate is used.', getComponentName(ctor) || 'A pure component');
    }
    var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';
    !noComponentDidUnmount ? warningWithoutStack$1(false, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name) : void 0;
    var noComponentDidReceiveProps = typeof instance.componentDidReceiveProps !== 'function';
    !noComponentDidReceiveProps ? warningWithoutStack$1(false, '%s has a method called ' + 'componentDidReceiveProps(). But there is no such lifecycle method. ' + 'If you meant to update the state in response to changing props, ' + 'use componentWillReceiveProps(). If you meant to fetch data or ' + 'run side-effects or mutations after React has updated the UI, use componentDidUpdate().', name) : void 0;
    var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';
    !noComponentWillRecieveProps ? warningWithoutStack$1(false, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name) : void 0;
    var noUnsafeComponentWillRecieveProps = typeof instance.UNSAFE_componentWillRecieveProps !== 'function';
    !noUnsafeComponentWillRecieveProps ? warningWithoutStack$1(false, '%s has a method called ' + 'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?', name) : void 0;
    var hasMutatedProps = instance.props !== newProps;
    !(instance.props === undefined || !hasMutatedProps) ? warningWithoutStack$1(false, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name) : void 0;
    var noInstanceDefaultProps = !instance.defaultProps;
    !noInstanceDefaultProps ? warningWithoutStack$1(false, 'Setting defaultProps as an instance property on %s is not supported and will be ignored.' + ' Instead, define defaultProps as a static property on %s.', name, name) : void 0;

    if (typeof instance.getSnapshotBeforeUpdate === 'function' && typeof instance.componentDidUpdate !== 'function' && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor)) {
      didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor);
      warningWithoutStack$1(false, '%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). ' + 'This component defines getSnapshotBeforeUpdate() only.', getComponentName(ctor));
    }

    var noInstanceGetDerivedStateFromProps = typeof instance.getDerivedStateFromProps !== 'function';
    !noInstanceGetDerivedStateFromProps ? warningWithoutStack$1(false, '%s: getDerivedStateFromProps() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name) : void 0;
    var noInstanceGetDerivedStateFromCatch = typeof instance.getDerivedStateFromError !== 'function';
    !noInstanceGetDerivedStateFromCatch ? warningWithoutStack$1(false, '%s: getDerivedStateFromError() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name) : void 0;
    var noStaticGetSnapshotBeforeUpdate = typeof ctor.getSnapshotBeforeUpdate !== 'function';
    !noStaticGetSnapshotBeforeUpdate ? warningWithoutStack$1(false, '%s: getSnapshotBeforeUpdate() is defined as a static method ' + 'and will be ignored. Instead, declare it as an instance method.', name) : void 0;
    var _state = instance.state;
    if (_state && (typeof _state !== 'object' || isArray$1(_state))) {
      warningWithoutStack$1(false, '%s.state: must be set to an object or null', name);
    }
    if (typeof instance.getChildContext === 'function') {
      !(typeof ctor.childContextTypes === 'object') ? warningWithoutStack$1(false, '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', name) : void 0;
    }
  }
}

function adoptClassInstance(workInProgress, instance) {
  instance.updater = classComponentUpdater;
  workInProgress.stateNode = instance;
  // The instance needs access to the fiber so that it can schedule updates
  set(instance, workInProgress);
  {
    instance._reactInternalInstance = fakeInternalInstance;
  }
}

function constructClassInstance(workInProgress, ctor, props, renderExpirationTime) {
  var isLegacyContextConsumer = false;
  var unmaskedContext = emptyContextObject;
  var context = null;
  var contextType = ctor.contextType;
  if (typeof contextType === 'object' && contextType !== null) {
    {
      if (contextType.$$typeof !== REACT_CONTEXT_TYPE && !didWarnAboutInvalidateContextType.has(ctor)) {
        didWarnAboutInvalidateContextType.add(ctor);
        warningWithoutStack$1(false, '%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext(). ' + 'Did you accidentally pass the Context.Provider instead?', getComponentName(ctor) || 'Component');
      }
    }

    context = readContext(contextType);
  } else {
    unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
    var contextTypes = ctor.contextTypes;
    isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined;
    context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject;
  }

  // Instantiate twice to help detect side-effects.
  {
    if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
      new ctor(props, context); // eslint-disable-line no-new
    }
  }

  var instance = new ctor(props, context);
  var state = workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null;
  adoptClassInstance(workInProgress, instance);

  {
    if (typeof ctor.getDerivedStateFromProps === 'function' && state === null) {
      var componentName = getComponentName(ctor) || 'Component';
      if (!didWarnAboutUninitializedState.has(componentName)) {
        didWarnAboutUninitializedState.add(componentName);
        warningWithoutStack$1(false, '`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, instance.state === null ? 'null' : 'undefined', componentName);
      }
    }

    // If new component APIs are defined, "unsafe" lifecycles won't be called.
    // Warn about these lifecycles if they are present.
    // Don't warn about react-lifecycles-compat polyfilled methods though.
    if (typeof ctor.getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function') {
      var foundWillMountName = null;
      var foundWillReceivePropsName = null;
      var foundWillUpdateName = null;
      if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) {
        foundWillMountName = 'componentWillMount';
      } else if (typeof instance.UNSAFE_componentWillMount === 'function') {
        foundWillMountName = 'UNSAFE_componentWillMount';
      }
      if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) {
        foundWillReceivePropsName = 'componentWillReceiveProps';
      } else if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
        foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps';
      }
      if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) {
        foundWillUpdateName = 'componentWillUpdate';
      } else if (typeof instance.UNSAFE_componentWillUpdate === 'function') {
        foundWillUpdateName = 'UNSAFE_componentWillUpdate';
      }
      if (foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null) {
        var _componentName = getComponentName(ctor) || 'Component';
        var newApiName = typeof ctor.getDerivedStateFromProps === 'function' ? 'getDerivedStateFromProps()' : 'getSnapshotBeforeUpdate()';
        if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) {
          didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName);
          warningWithoutStack$1(false, 'Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' + '%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n' + 'The above lifecycles should be removed. Learn more about this warning here:\n' + 'https://fb.me/react-async-component-lifecycle-hooks', _componentName, newApiName, foundWillMountName !== null ? '\n  ' + foundWillMountName : '', foundWillReceivePropsName !== null ? '\n  ' + foundWillReceivePropsName : '', foundWillUpdateName !== null ? '\n  ' + foundWillUpdateName : '');
        }
      }
    }
  }

  // Cache unmasked context so we can avoid recreating masked context unless necessary.
  // ReactFiberContext usually updates this cache but can't for newly-created instances.
  if (isLegacyContextConsumer) {
    cacheContext(workInProgress, unmaskedContext, context);
  }

  return instance;
}

function callComponentWillMount(workInProgress, instance) {
  startPhaseTimer(workInProgress, 'componentWillMount');
  var oldState = instance.state;

  if (typeof instance.componentWillMount === 'function') {
    instance.componentWillMount();
  }
  if (typeof instance.UNSAFE_componentWillMount === 'function') {
    instance.UNSAFE_componentWillMount();
  }

  stopPhaseTimer();

  if (oldState !== instance.state) {
    {
      warningWithoutStack$1(false, '%s.componentWillMount(): Assigning directly to this.state is ' + "deprecated (except inside a component's " + 'constructor). Use setState instead.', getComponentName(workInProgress.type) || 'Component');
    }
    classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
  }
}

function callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext) {
  var oldState = instance.state;
  startPhaseTimer(workInProgress, 'componentWillReceiveProps');
  if (typeof instance.componentWillReceiveProps === 'function') {
    instance.componentWillReceiveProps(newProps, nextContext);
  }
  if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
  }
  stopPhaseTimer();

  if (instance.state !== oldState) {
    {
      var componentName = getComponentName(workInProgress.type) || 'Component';
      if (!didWarnAboutStateAssignmentForComponent.has(componentName)) {
        didWarnAboutStateAssignmentForComponent.add(componentName);
        warningWithoutStack$1(false, '%s.componentWillReceiveProps(): Assigning directly to ' + "this.state is deprecated (except inside a component's " + 'constructor). Use setState instead.', componentName);
      }
    }
    classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
  }
}

// Invokes the mount life-cycles on a previously never rendered instance.
function mountClassInstance(workInProgress, ctor, newProps, renderExpirationTime) {
  {
    checkClassInstance(workInProgress, ctor, newProps);
  }

  var instance = workInProgress.stateNode;
  instance.props = newProps;
  instance.state = workInProgress.memoizedState;
  instance.refs = emptyRefsObject;

  var contextType = ctor.contextType;
  if (typeof contextType === 'object' && contextType !== null) {
    instance.context = readContext(contextType);
  } else {
    var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
    instance.context = getMaskedContext(workInProgress, unmaskedContext);
  }

  {
    if (instance.state === newProps) {
      var componentName = getComponentName(ctor) || 'Component';
      if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) {
        didWarnAboutDirectlyAssigningPropsToState.add(componentName);
        warningWithoutStack$1(false, '%s: It is not recommended to assign props directly to state ' + "because updates to props won't be reflected in state. " + 'In most cases, it is better to use props directly.', componentName);
      }
    }

    if (workInProgress.mode & StrictMode) {
      ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(workInProgress, instance);

      ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, instance);
    }

    if (warnAboutDeprecatedLifecycles) {
      ReactStrictModeWarnings.recordDeprecationWarnings(workInProgress, instance);
    }
  }

  var updateQueue = workInProgress.updateQueue;
  if (updateQueue !== null) {
    processUpdateQueue(workInProgress, updateQueue, newProps, instance, renderExpirationTime);
    instance.state = workInProgress.memoizedState;
  }

  var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
  if (typeof getDerivedStateFromProps === 'function') {
    applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
    instance.state = workInProgress.memoizedState;
  }

  // In order to support react-lifecycles-compat polyfilled components,
  // Unsafe lifecycles should not be invoked for components using the new APIs.
  if (typeof ctor.getDerivedStateFromProps !== 'function' && typeof instance.getSnapshotBeforeUpdate !== 'function' && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) {
    callComponentWillMount(workInProgress, instance);
    // If we had additional state updates during this life-cycle, let's
    // process them now.
    updateQueue = workInProgress.updateQueue;
    if (updateQueue !== null) {
      processUpdateQueue(workInProgress, updateQueue, newProps, instance, renderExpirationTime);
      instance.state = workInProgress.memoizedState;
    }
  }

  if (typeof instance.componentDidMount === 'function') {
    workInProgress.effectTag |= Update;
  }
}

function resumeMountClassInstance(workInProgress, ctor, newProps, renderExpirationTime) {
  var instance = workInProgress.stateNode;

  var oldProps = workInProgress.memoizedProps;
  instance.props = oldProps;

  var oldContext = instance.context;
  var contextType = ctor.contextType;
  var nextContext = void 0;
  if (typeof contextType === 'object' && contextType !== null) {
    nextContext = readContext(contextType);
  } else {
    var nextLegacyUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
    nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext);
  }

  var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
  var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function';

  // Note: During these life-cycles, instance.props/instance.state are what
  // ever the previously attempted to render - not the "current". However,
  // during componentDidUpdate we pass the "current" props.

  // In order to support react-lifecycles-compat polyfilled components,
  // Unsafe lifecycles should not be invoked for components using the new APIs.
  if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) {
    if (oldProps !== newProps || oldContext !== nextContext) {
      callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext);
    }
  }

  resetHasForceUpdateBeforeProcessing();

  var oldState = workInProgress.memoizedState;
  var newState = instance.state = oldState;
  var updateQueue = workInProgress.updateQueue;
  if (updateQueue !== null) {
    processUpdateQueue(workInProgress, updateQueue, newProps, instance, renderExpirationTime);
    newState = workInProgress.memoizedState;
  }
  if (oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) {
    // If an update was already in progress, we should schedule an Update
    // effect even though we're bailing out, so that cWU/cDU are called.
    if (typeof instance.componentDidMount === 'function') {
      workInProgress.effectTag |= Update;
    }
    return false;
  }

  if (typeof getDerivedStateFromProps === 'function') {
    applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
    newState = workInProgress.memoizedState;
  }

  var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext);

  if (shouldUpdate) {
    // In order to support react-lifecycles-compat polyfilled components,
    // Unsafe lifecycles should not be invoked for components using the new APIs.
    if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) {
      startPhaseTimer(workInProgress, 'componentWillMount');
      if (typeof instance.componentWillMount === 'function') {
        instance.componentWillMount();
      }
      if (typeof instance.UNSAFE_componentWillMount === 'function') {
        instance.UNSAFE_componentWillMount();
      }
      stopPhaseTimer();
    }
    if (typeof instance.componentDidMount === 'function') {
      workInProgress.effectTag |= Update;
    }
  } else {
    // If an update was already in progress, we should schedule an Update
    // effect even though we're bailing out, so that cWU/cDU are called.
    if (typeof instance.componentDidMount === 'function') {
      workInProgress.effectTag |= Update;
    }

    // If shouldComponentUpdate returned false, we should still update the
    // memoized state to indicate that this work can be reused.
    workInProgress.memoizedProps = newProps;
    workInProgress.memoizedState = newState;
  }

  // Update the existing instance's state, props, and context pointers even
  // if shouldComponentUpdate returns false.
  instance.props = newProps;
  instance.state = newState;
  instance.context = nextContext;

  return shouldUpdate;
}

// Invokes the update life-cycles and returns false if it shouldn't rerender.
function updateClassInstance(current, workInProgress, ctor, newProps, renderExpirationTime) {
  var instance = workInProgress.stateNode;

  var oldProps = workInProgress.memoizedProps;
  instance.props = workInProgress.type === workInProgress.elementType ? oldProps : resolveDefaultProps(workInProgress.type, oldProps);

  var oldContext = instance.context;
  var contextType = ctor.contextType;
  var nextContext = void 0;
  if (typeof contextType === 'object' && contextType !== null) {
    nextContext = readContext(contextType);
  } else {
    var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
    nextContext = getMaskedContext(workInProgress, nextUnmaskedContext);
  }

  var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
  var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function';

  // Note: During these life-cycles, instance.props/instance.state are what
  // ever the previously attempted to render - not the "current". However,
  // during componentDidUpdate we pass the "current" props.

  // In order to support react-lifecycles-compat polyfilled components,
  // Unsafe lifecycles should not be invoked for components using the new APIs.
  if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) {
    if (oldProps !== newProps || oldContext !== nextContext) {
      callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext);
    }
  }

  resetHasForceUpdateBeforeProcessing();

  var oldState = workInProgress.memoizedState;
  var newState = instance.state = oldState;
  var updateQueue = workInProgress.updateQueue;
  if (updateQueue !== null) {
    processUpdateQueue(workInProgress, updateQueue, newProps, instance, renderExpirationTime);
    newState = workInProgress.memoizedState;
  }

  if (oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) {
    // If an update was already in progress, we should schedule an Update
    // effect even though we're bailing out, so that cWU/cDU are called.
    if (typeof instance.componentDidUpdate === 'function') {
      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
        workInProgress.effectTag |= Update;
      }
    }
    if (typeof instance.getSnapshotBeforeUpdate === 'function') {
      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
        workInProgress.effectTag |= Snapshot;
      }
    }
    return false;
  }

  if (typeof getDerivedStateFromProps === 'function') {
    applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
    newState = workInProgress.memoizedState;
  }

  var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext);

  if (shouldUpdate) {
    // In order to support react-lifecycles-compat polyfilled components,
    // Unsafe lifecycles should not be invoked for components using the new APIs.
    if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === 'function' || typeof instance.componentWillUpdate === 'function')) {
      startPhaseTimer(workInProgress, 'componentWillUpdate');
      if (typeof instance.componentWillUpdate === 'function') {
        instance.componentWillUpdate(newProps, newState, nextContext);
      }
      if (typeof instance.UNSAFE_componentWillUpdate === 'function') {
        instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext);
      }
      stopPhaseTimer();
    }
    if (typeof instance.componentDidUpdate === 'function') {
      workInProgress.effectTag |= Update;
    }
    if (typeof instance.getSnapshotBeforeUpdate === 'function') {
      workInProgress.effectTag |= Snapshot;
    }
  } else {
    // If an update was already in progress, we should schedule an Update
    // effect even though we're bailing out, so that cWU/cDU are called.
    if (typeof instance.componentDidUpdate === 'function') {
      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
        workInProgress.effectTag |= Update;
      }
    }
    if (typeof instance.getSnapshotBeforeUpdate === 'function') {
      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
        workInProgress.effectTag |= Snapshot;
      }
    }

    // If shouldComponentUpdate returned false, we should still update the
    // memoized props/state to indicate that this work can be reused.
    workInProgress.memoizedProps = newProps;
    workInProgress.memoizedState = newState;
  }

  // Update the existing instance's state, props, and context pointers even
  // if shouldComponentUpdate returns false.
  instance.props = newProps;
  instance.state = newState;
  instance.context = nextContext;

  return shouldUpdate;
}

var didWarnAboutMaps = void 0;
var didWarnAboutGenerators = void 0;
var didWarnAboutStringRefInStrictMode = void 0;
var ownerHasKeyUseWarning = void 0;
var ownerHasFunctionTypeWarning = void 0;
var warnForMissingKey = function (child) {};

{
  didWarnAboutMaps = false;
  didWarnAboutGenerators = false;
  didWarnAboutStringRefInStrictMode = {};

  /**
   * Warn if there's no key explicitly set on dynamic arrays of children or
   * object keys are not valid. This allows us to keep track of children between
   * updates.
   */
  ownerHasKeyUseWarning = {};
  ownerHasFunctionTypeWarning = {};

  warnForMissingKey = function (child) {
    if (child === null || typeof child !== 'object') {
      return;
    }
    if (!child._store || child._store.validated || child.key != null) {
      return;
    }
    !(typeof child._store === 'object') ? invariant(false, 'React Component in warnForMissingKey should have a _store. This error is likely caused by a bug in React. Please file an issue.') : void 0;
    child._store.validated = true;

    var currentComponentErrorInfo = 'Each child in a list should have a unique ' + '"key" prop. See https://fb.me/react-warning-keys for ' + 'more information.' + getCurrentFiberStackInDev();
    if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
      return;
    }
    ownerHasKeyUseWarning[currentComponentErrorInfo] = true;

    warning$1(false, 'Each child in a list should have a unique ' + '"key" prop. See https://fb.me/react-warning-keys for ' + 'more information.');
  };
}

var isArray = Array.isArray;

function coerceRef(returnFiber, current$$1, element) {
  var mixedRef = element.ref;
  if (mixedRef !== null && typeof mixedRef !== 'function' && typeof mixedRef !== 'object') {
    {
      if (returnFiber.mode & StrictMode) {
        var componentName = getComponentName(returnFiber.type) || 'Component';
        if (!didWarnAboutStringRefInStrictMode[componentName]) {
          warningWithoutStack$1(false, 'A string ref, "%s", has been found within a strict mode tree. ' + 'String refs are a source of potential bugs and should be avoided. ' + 'We recommend using createRef() instead.' + '\n%s' + '\n\nLearn more about using refs safely here:' + '\nhttps://fb.me/react-strict-mode-string-ref', mixedRef, getStackByFiberInDevAndProd(returnFiber));
          didWarnAboutStringRefInStrictMode[componentName] = true;
        }
      }
    }

    if (element._owner) {
      var owner = element._owner;
      var inst = void 0;
      if (owner) {
        var ownerFiber = owner;
        !(ownerFiber.tag === ClassComponent) ? invariant(false, 'Function components cannot have refs. Did you mean to use React.forwardRef()?') : void 0;
        inst = ownerFiber.stateNode;
      }
      !inst ? invariant(false, 'Missing owner for string ref %s. This error is likely caused by a bug in React. Please file an issue.', mixedRef) : void 0;
      var stringRef = '' + mixedRef;
      // Check if previous string ref matches new string ref
      if (current$$1 !== null && current$$1.ref !== null && typeof current$$1.ref === 'function' && current$$1.ref._stringRef === stringRef) {
        return current$$1.ref;
      }
      var ref = function (value) {
        var refs = inst.refs;
        if (refs === emptyRefsObject) {
          // This is a lazy pooled frozen object, so we need to initialize.
          refs = inst.refs = {};
        }
        if (value === null) {
          delete refs[stringRef];
        } else {
          refs[stringRef] = value;
        }
      };
      ref._stringRef = stringRef;
      return ref;
    } else {
      !(typeof mixedRef === 'string') ? invariant(false, 'Expected ref to be a function, a string, an object returned by React.createRef(), or null.') : void 0;
      !element._owner ? invariant(false, 'Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component\'s render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.', mixedRef) : void 0;
    }
  }
  return mixedRef;
}

function throwOnInvalidObjectType(returnFiber, newChild) {
  if (returnFiber.type !== 'textarea') {
    var addendum = '';
    {
      addendum = ' If you meant to render a collection of children, use an array ' + 'instead.' + getCurrentFiberStackInDev();
    }
    invariant(false, 'Objects are not valid as a React child (found: %s).%s', Object.prototype.toString.call(newChild) === '[object Object]' ? 'object with keys {' + Object.keys(newChild).join(', ') + '}' : newChild, addendum);
  }
}

function warnOnFunctionType() {
  var currentComponentErrorInfo = 'Functions are not valid as a React child. This may happen if ' + 'you return a Component instead of <Component /> from render. ' + 'Or maybe you meant to call this function rather than return it.' + getCurrentFiberStackInDev();

  if (ownerHasFunctionTypeWarning[currentComponentErrorInfo]) {
    return;
  }
  ownerHasFunctionTypeWarning[currentComponentErrorInfo] = true;

  warning$1(false, 'Functions are not valid as a React child. This may happen if ' + 'you return a Component instead of <Component /> from render. ' + 'Or maybe you meant to call this function rather than return it.');
}

// This wrapper function exists because I expect to clone the code in each path
// to be able to optimize each path individually by branching early. This needs
// a compiler or we can do it manually. Helpers that don't need this branching
// live outside of this function.
function ChildReconciler(shouldTrackSideEffects) {
  function deleteChild(returnFiber, childToDelete) {
    if (!shouldTrackSideEffects) {
      // Noop.
      return;
    }
    // Deletions are added in reversed order so we add it to the front.
    // At this point, the return fiber's effect list is empty except for
    // deletions, so we can just append the deletion to the list. The remaining
    // effects aren't added until the complete phase. Once we implement
    // resuming, this may not be true.
    var last = returnFiber.lastEffect;
    if (last !== null) {
      last.nextEffect = childToDelete;
      returnFiber.lastEffect = childToDelete;
    } else {
      returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;
    }
    childToDelete.nextEffect = null;
    childToDelete.effectTag = Deletion;
  }

  function deleteRemainingChildren(returnFiber, currentFirstChild) {
    if (!shouldTrackSideEffects) {
      // Noop.
      return null;
    }

    // TODO: For the shouldClone case, this could be micro-optimized a bit by
    // assuming that after the first child we've already added everything.
    var childToDelete = currentFirstChild;
    while (childToDelete !== null) {
      deleteChild(returnFiber, childToDelete);
      childToDelete = childToDelete.sibling;
    }
    return null;
  }

  function mapRemainingChildren(returnFiber, currentFirstChild) {
    // Add the remaining children to a temporary map so that we can find them by
    // keys quickly. Implicit (null) keys get added to this set with their index
    var existingChildren = new Map();

    var existingChild = currentFirstChild;
    while (existingChild !== null) {
      if (existingChild.key !== null) {
        existingChildren.set(existingChild.key, existingChild);
      } else {
        existingChildren.set(existingChild.index, existingChild);
      }
      existingChild = existingChild.sibling;
    }
    return existingChildren;
  }

  function useFiber(fiber, pendingProps, expirationTime) {
    // We currently set sibling to null and index to 0 here because it is easy
    // to forget to do before returning it. E.g. for the single child case.
    var clone = createWorkInProgress(fiber, pendingProps, expirationTime);
    clone.index = 0;
    clone.sibling = null;
    return clone;
  }

  function placeChild(newFiber, lastPlacedIndex, newIndex) {
    newFiber.index = newIndex;
    if (!shouldTrackSideEffects) {
      // Noop.
      return lastPlacedIndex;
    }
    var current$$1 = newFiber.alternate;
    if (current$$1 !== null) {
      var oldIndex = current$$1.index;
      if (oldIndex < lastPlacedIndex) {
        // This is a move.
        newFiber.effectTag = Placement;
        return lastPlacedIndex;
      } else {
        // This item can stay in place.
        return oldIndex;
      }
    } else {
      // This is an insertion.
      newFiber.effectTag = Placement;
      return lastPlacedIndex;
    }
  }

  function placeSingleChild(newFiber) {
    // This is simpler for the single child case. We only need to do a
    // placement for inserting new children.
    if (shouldTrackSideEffects && newFiber.alternate === null) {
      newFiber.effectTag = Placement;
    }
    return newFiber;
  }

  function updateTextNode(returnFiber, current$$1, textContent, expirationTime) {
    if (current$$1 === null || current$$1.tag !== HostText) {
      // Insert
      var created = createFiberFromText(textContent, returnFiber.mode, expirationTime);
      created.return = returnFiber;
      return created;
    } else {
      // Update
      var existing = useFiber(current$$1, textContent, expirationTime);
      existing.return = returnFiber;
      return existing;
    }
  }

  function updateElement(returnFiber, current$$1, element, expirationTime) {
    if (current$$1 !== null && current$$1.elementType === element.type) {
      // Move based on index
      var existing = useFiber(current$$1, element.props, expirationTime);
      existing.ref = coerceRef(returnFiber, current$$1, element);
      existing.return = returnFiber;
      {
        existing._debugSource = element._source;
        existing._debugOwner = element._owner;
      }
      return existing;
    } else {
      // Insert
      var created = createFiberFromElement(element, returnFiber.mode, expirationTime);
      created.ref = coerceRef(returnFiber, current$$1, element);
      created.return = returnFiber;
      return created;
    }
  }

  function updatePortal(returnFiber, current$$1, portal, expirationTime) {
    if (current$$1 === null || current$$1.tag !== HostPortal || current$$1.stateNode.containerInfo !== portal.containerInfo || current$$1.stateNode.implementation !== portal.implementation) {
      // Insert
      var created = createFiberFromPortal(portal, returnFiber.mode, expirationTime);
      created.return = returnFiber;
      return created;
    } else {
      // Update
      var existing = useFiber(current$$1, portal.children || [], expirationTime);
      existing.return = returnFiber;
      return existing;
    }
  }

  function updateFragment(returnFiber, current$$1, fragment, expirationTime, key) {
    if (current$$1 === null || current$$1.tag !== Fragment) {
      // Insert
      var created = createFiberFromFragment(fragment, returnFiber.mode, expirationTime, key);
      created.return = returnFiber;
      return created;
    } else {
      // Update
      var existing = useFiber(current$$1, fragment, expirationTime);
      existing.return = returnFiber;
      return existing;
    }
  }

  function createChild(returnFiber, newChild, expirationTime) {
    if (typeof newChild === 'string' || typeof newChild === 'number') {
      // Text nodes don't have keys. If the previous node is implicitly keyed
      // we can continue to replace it without aborting even if it is not a text
      // node.
      var created = createFiberFromText('' + newChild, returnFiber.mode, expirationTime);
      created.return = returnFiber;
      return created;
    }

    if (typeof newChild === 'object' && newChild !== null) {
      switch (newChild.$$typeof) {
        case REACT_ELEMENT_TYPE:
          {
            var _created = createFiberFromElement(newChild, returnFiber.mode, expirationTime);
            _created.ref = coerceRef(returnFiber, null, newChild);
            _created.return = returnFiber;
            return _created;
          }
        case REACT_PORTAL_TYPE:
          {
            var _created2 = createFiberFromPortal(newChild, returnFiber.mode, expirationTime);
            _created2.return = returnFiber;
            return _created2;
          }
      }

      if (isArray(newChild) || getIteratorFn(newChild)) {
        var _created3 = createFiberFromFragment(newChild, returnFiber.mode, expirationTime, null);
        _created3.return = returnFiber;
        return _created3;
      }

      throwOnInvalidObjectType(returnFiber, newChild);
    }

    {
      if (typeof newChild === 'function') {
        warnOnFunctionType();
      }
    }

    return null;
  }

  function updateSlot(returnFiber, oldFiber, newChild, expirationTime) {
    // Update the fiber if the keys match, otherwise return null.

    var key = oldFiber !== null ? oldFiber.key : null;

    if (typeof newChild === 'string' || typeof newChild === 'number') {
      // Text nodes don't have keys. If the previous node is implicitly keyed
      // we can continue to replace it without aborting even if it is not a text
      // node.
      if (key !== null) {
        return null;
      }
      return updateTextNode(returnFiber, oldFiber, '' + newChild, expirationTime);
    }

    if (typeof newChild === 'object' && newChild !== null) {
      switch (newChild.$$typeof) {
        case REACT_ELEMENT_TYPE:
          {
            if (newChild.key === key) {
              if (newChild.type === REACT_FRAGMENT_TYPE) {
                return updateFragment(returnFiber, oldFiber, newChild.props.children, expirationTime, key);
              }
              return updateElement(returnFiber, oldFiber, newChild, expirationTime);
            } else {
              return null;
            }
          }
        case REACT_PORTAL_TYPE:
          {
            if (newChild.key === key) {
              return updatePortal(returnFiber, oldFiber, newChild, expirationTime);
            } else {
              return null;
            }
          }
      }

      if (isArray(newChild) || getIteratorFn(newChild)) {
        if (key !== null) {
          return null;
        }

        return updateFragment(returnFiber, oldFiber, newChild, expirationTime, null);
      }

      throwOnInvalidObjectType(returnFiber, newChild);
    }

    {
      if (typeof newChild === 'function') {
        warnOnFunctionType();
      }
    }

    return null;
  }

  function updateFromMap(existingChildren, returnFiber, newIdx, newChild, expirationTime) {
    if (typeof newChild === 'string' || typeof newChild === 'number') {
      // Text nodes don't have keys, so we neither have to check the old nor
      // new node for the key. If both are text nodes, they match.
      var matchedFiber = existingChildren.get(newIdx) || null;
      return updateTextNode(returnFiber, matchedFiber, '' + newChild, expirationTime);
    }

    if (typeof newChild === 'object' && newChild !== null) {
      switch (newChild.$$typeof) {
        case REACT_ELEMENT_TYPE:
          {
            var _matchedFiber = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null;
            if (newChild.type === REACT_FRAGMENT_TYPE) {
              return updateFragment(returnFiber, _matchedFiber, newChild.props.children, expirationTime, newChild.key);
            }
            return updateElement(returnFiber, _matchedFiber, newChild, expirationTime);
          }
        case REACT_PORTAL_TYPE:
          {
            var _matchedFiber2 = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null;
            return updatePortal(returnFiber, _matchedFiber2, newChild, expirationTime);
          }
      }

      if (isArray(newChild) || getIteratorFn(newChild)) {
        var _matchedFiber3 = existingChildren.get(newIdx) || null;
        return updateFragment(returnFiber, _matchedFiber3, newChild, expirationTime, null);
      }

      throwOnInvalidObjectType(returnFiber, newChild);
    }

    {
      if (typeof newChild === 'function') {
        warnOnFunctionType();
      }
    }

    return null;
  }

  /**
   * Warns if there is a duplicate or missing key
   */
  function warnOnInvalidKey(child, knownKeys) {
    {
      if (typeof child !== 'object' || child === null) {
        return knownKeys;
      }
      switch (child.$$typeof) {
        case REACT_ELEMENT_TYPE:
        case REACT_PORTAL_TYPE:
          warnForMissingKey(child);
          var key = child.key;
          if (typeof key !== 'string') {
            break;
          }
          if (knownKeys === null) {
            knownKeys = new Set();
            knownKeys.add(key);
            break;
          }
          if (!knownKeys.has(key)) {
            knownKeys.add(key);
            break;
          }
          warning$1(false, 'Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted — the behavior is unsupported and ' + 'could change in a future version.', key);
          break;
        default:
          break;
      }
    }
    return knownKeys;
  }

  function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, expirationTime) {
    // This algorithm can't optimize by searching from both ends since we
    // don't have backpointers on fibers. I'm trying to see how far we can get
    // with that model. If it ends up not being worth the tradeoffs, we can
    // add it later.

    // Even with a two ended optimization, we'd want to optimize for the case
    // where there are few changes and brute force the comparison instead of
    // going for the Map. It'd like to explore hitting that path first in
    // forward-only mode and only go for the Map once we notice that we need
    // lots of look ahead. This doesn't handle reversal as well as two ended
    // search but that's unusual. Besides, for the two ended optimization to
    // work on Iterables, we'd need to copy the whole set.

    // In this first iteration, we'll just live with hitting the bad case
    // (adding everything to a Map) in for every insert/move.

    // If you change this code, also update reconcileChildrenIterator() which
    // uses the same algorithm.

    {
      // First, validate keys.
      var knownKeys = null;
      for (var i = 0; i < newChildren.length; i++) {
        var child = newChildren[i];
        knownKeys = warnOnInvalidKey(child, knownKeys);
      }
    }

    var resultingFirstChild = null;
    var previousNewFiber = null;

    var oldFiber = currentFirstChild;
    var lastPlacedIndex = 0;
    var newIdx = 0;
    var nextOldFiber = null;
    for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {
      if (oldFiber.index > newIdx) {
        nextOldFiber = oldFiber;
        oldFiber = null;
      } else {
        nextOldFiber = oldFiber.sibling;
      }
      var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], expirationTime);
      if (newFiber === null) {
        // TODO: This breaks on empty slots like null children. That's
        // unfortunate because it triggers the slow path all the time. We need
        // a better way to communicate whether this was a miss or null,
        // boolean, undefined, etc.
        if (oldFiber === null) {
          oldFiber = nextOldFiber;
        }
        break;
      }
      if (shouldTrackSideEffects) {
        if (oldFiber && newFiber.alternate === null) {
          // We matched the slot, but we didn't reuse the existing fiber, so we
          // need to delete the existing child.
          deleteChild(returnFiber, oldFiber);
        }
      }
      lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);
      if (previousNewFiber === null) {
        // TODO: Move out of the loop. This only happens for the first run.
        resultingFirstChild = newFiber;
      } else {
        // TODO: Defer siblings if we're not at the right index for this slot.
        // I.e. if we had null values before, then we want to defer this
        // for each null value. However, we also don't want to call updateSlot
        // with the previous one.
        previousNewFiber.sibling = newFiber;
      }
      previousNewFiber = newFiber;
      oldFiber = nextOldFiber;
    }

    if (newIdx === newChildren.length) {
      // We've reached the end of the new children. We can delete the rest.
      deleteRemainingChildren(returnFiber, oldFiber);
      return resultingFirstChild;
    }

    if (oldFiber === null) {
      // If we don't have any more existing children we can choose a fast path
      // since the rest will all be insertions.
      for (; newIdx < newChildren.length; newIdx++) {
        var _newFiber = createChild(returnFiber, newChildren[newIdx], expirationTime);
        if (!_newFiber) {
          continue;
        }
        lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx);
        if (previousNewFiber === null) {
          // TODO: Move out of the loop. This only happens for the first run.
          resultingFirstChild = _newFiber;
        } else {
          previousNewFiber.sibling = _newFiber;
        }
        previousNewFiber = _newFiber;
      }
      return resultingFirstChild;
    }

    // Add all children to a key map for quick lookups.
    var existingChildren = mapRemainingChildren(returnFiber, oldFiber);

    // Keep scanning and use the map to restore deleted items as moves.
    for (; newIdx < newChildren.length; newIdx++) {
      var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], expirationTime);
      if (_newFiber2) {
        if (shouldTrackSideEffects) {
          if (_newFiber2.alternate !== null) {
            // The new fiber is a work in progress, but if there exists a
            // current, that means that we reused the fiber. We need to delete
            // it from the child list so that we don't add it to the deletion
            // list.
            existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key);
          }
        }
        lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx);
        if (previousNewFiber === null) {
          resultingFirstChild = _newFiber2;
        } else {
          previousNewFiber.sibling = _newFiber2;
        }
        previousNewFiber = _newFiber2;
      }
    }

    if (shouldTrackSideEffects) {
      // Any existing children that weren't consumed above were deleted. We need
      // to add them to the deletion list.
      existingChildren.forEach(function (child) {
        return deleteChild(returnFiber, child);
      });
    }

    return resultingFirstChild;
  }

  function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, expirationTime) {
    // This is the same implementation as reconcileChildrenArray(),
    // but using the iterator instead.

    var iteratorFn = getIteratorFn(newChildrenIterable);
    !(typeof iteratorFn === 'function') ? invariant(false, 'An object is not an iterable. This error is likely caused by a bug in React. Please file an issue.') : void 0;

    {
      // We don't support rendering Generators because it's a mutation.
      // See https://github.com/facebook/react/issues/12995
      if (typeof Symbol === 'function' &&
      // $FlowFixMe Flow doesn't know about toStringTag
      newChildrenIterable[Symbol.toStringTag] === 'Generator') {
        !didWarnAboutGenerators ? warning$1(false, 'Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.') : void 0;
        didWarnAboutGenerators = true;
      }

      // Warn about using Maps as children
      if (newChildrenIterable.entries === iteratorFn) {
        !didWarnAboutMaps ? warning$1(false, 'Using Maps as children is unsupported and will likely yield ' + 'unexpected results. Convert it to a sequence/iterable of keyed ' + 'ReactElements instead.') : void 0;
        didWarnAboutMaps = true;
      }

      // First, validate keys.
      // We'll get a different iterator later for the main pass.
      var _newChildren = iteratorFn.call(newChildrenIterable);
      if (_newChildren) {
        var knownKeys = null;
        var _step = _newChildren.next();
        for (; !_step.done; _step = _newChildren.next()) {
          var child = _step.value;
          knownKeys = warnOnInvalidKey(child, knownKeys);
        }
      }
    }

    var newChildren = iteratorFn.call(newChildrenIterable);
    !(newChildren != null) ? invariant(false, 'An iterable object provided no iterator.') : void 0;

    var resultingFirstChild = null;
    var previousNewFiber = null;

    var oldFiber = currentFirstChild;
    var lastPlacedIndex = 0;
    var newIdx = 0;
    var nextOldFiber = null;

    var step = newChildren.next();
    for (; oldFiber !== null && !step.done; newIdx++, step = newChildren.next()) {
      if (oldFiber.index > newIdx) {
        nextOldFiber = oldFiber;
        oldFiber = null;
      } else {
        nextOldFiber = oldFiber.sibling;
      }
      var newFiber = updateSlot(returnFiber, oldFiber, step.value, expirationTime);
      if (newFiber === null) {
        // TODO: This breaks on empty slots like null children. That's
        // unfortunate because it triggers the slow path all the time. We need
        // a better way to communicate whether this was a miss or null,
        // boolean, undefined, etc.
        if (!oldFiber) {
          oldFiber = nextOldFiber;
        }
        break;
      }
      if (shouldTrackSideEffects) {
        if (oldFiber && newFiber.alternate === null) {
          // We matched the slot, but we didn't reuse the existing fiber, so we
          // need to delete the existing child.
          deleteChild(returnFiber, oldFiber);
        }
      }
      lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);
      if (previousNewFiber === null) {
        // TODO: Move out of the loop. This only happens for the first run.
        resultingFirstChild = newFiber;
      } else {
        // TODO: Defer siblings if we're not at the right index for this slot.
        // I.e. if we had null values before, then we want to defer this
        // for each null value. However, we also don't want to call updateSlot
        // with the previous one.
        previousNewFiber.sibling = newFiber;
      }
      previousNewFiber = newFiber;
      oldFiber = nextOldFiber;
    }

    if (step.done) {
      // We've reached the end of the new children. We can delete the rest.
      deleteRemainingChildren(returnFiber, oldFiber);
      return resultingFirstChild;
    }

    if (oldFiber === null) {
      // If we don't have any more existing children we can choose a fast path
      // since the rest will all be insertions.
      for (; !step.done; newIdx++, step = newChildren.next()) {
        var _newFiber3 = createChild(returnFiber, step.value, expirationTime);
        if (_newFiber3 === null) {
          continue;
        }
        lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx);
        if (previousNewFiber === null) {
          // TODO: Move out of the loop. This only happens for the first run.
          resultingFirstChild = _newFiber3;
        } else {
          previousNewFiber.sibling = _newFiber3;
        }
        previousNewFiber = _newFiber3;
      }
      return resultingFirstChild;
    }

    // Add all children to a key map for quick lookups.
    var existingChildren = mapRemainingChildren(returnFiber, oldFiber);

    // Keep scanning and use the map to restore deleted items as moves.
    for (; !step.done; newIdx++, step = newChildren.next()) {
      var _newFiber4 = updateFromMap(existingChildren, returnFiber, newIdx, step.value, expirationTime);
      if (_newFiber4 !== null) {
        if (shouldTrackSideEffects) {
          if (_newFiber4.alternate !== null) {
            // The new fiber is a work in progress, but if there exists a
            // current, that means that we reused the fiber. We need to delete
            // it from the child list so that we don't add it to the deletion
            // list.
            existingChildren.delete(_newFiber4.key === null ? newIdx : _newFiber4.key);
          }
        }
        lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx);
        if (previousNewFiber === null) {
          resultingFirstChild = _newFiber4;
        } else {
          previousNewFiber.sibling = _newFiber4;
        }
        previousNewFiber = _newFiber4;
      }
    }

    if (shouldTrackSideEffects) {
      // Any existing children that weren't consumed above were deleted. We need
      // to add them to the deletion list.
      existingChildren.forEach(function (child) {
        return deleteChild(returnFiber, child);
      });
    }

    return resultingFirstChild;
  }

  function reconcileSingleTextNode(returnFiber, currentFirstChild, textContent, expirationTime) {
    // There's no need to check for keys on text nodes since we don't have a
    // way to define them.
    if (currentFirstChild !== null && currentFirstChild.tag === HostText) {
      // We already have an existing node so let's just update it and delete
      // the rest.
      deleteRemainingChildren(returnFiber, currentFirstChild.sibling);
      var existing = useFiber(currentFirstChild, textContent, expirationTime);
      existing.return = returnFiber;
      return existing;
    }
    // The existing first child is not a text node so we need to create one
    // and delete the existing ones.
    deleteRemainingChildren(returnFiber, currentFirstChild);
    var created = createFiberFromText(textContent, returnFiber.mode, expirationTime);
    created.return = returnFiber;
    return created;
  }

  function reconcileSingleElement(returnFiber, currentFirstChild, element, expirationTime) {
    var key = element.key;
    var child = currentFirstChild;
    while (child !== null) {
      // TODO: If key === null and child.key === null, then this only applies to
      // the first item in the list.
      if (child.key === key) {
        if (child.tag === Fragment ? element.type === REACT_FRAGMENT_TYPE : child.elementType === element.type) {
          deleteRemainingChildren(returnFiber, child.sibling);
          var existing = useFiber(child, element.type === REACT_FRAGMENT_TYPE ? element.props.children : element.props, expirationTime);
          existing.ref = coerceRef(returnFiber, child, element);
          existing.return = returnFiber;
          {
            existing._debugSource = element._source;
            existing._debugOwner = element._owner;
          }
          return existing;
        } else {
          deleteRemainingChildren(returnFiber, child);
          break;
        }
      } else {
        deleteChild(returnFiber, child);
      }
      child = child.sibling;
    }

    if (element.type === REACT_FRAGMENT_TYPE) {
      var created = createFiberFromFragment(element.props.children, returnFiber.mode, expirationTime, element.key);
      created.return = returnFiber;
      return created;
    } else {
      var _created4 = createFiberFromElement(element, returnFiber.mode, expirationTime);
      _created4.ref = coerceRef(returnFiber, currentFirstChild, element);
      _created4.return = returnFiber;
      return _created4;
    }
  }

  function reconcileSinglePortal(returnFiber, currentFirstChild, portal, expirationTime) {
    var key = portal.key;
    var child = currentFirstChild;
    while (child !== null) {
      // TODO: If key === null and child.key === null, then this only applies to
      // the first item in the list.
      if (child.key === key) {
        if (child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation) {
          deleteRemainingChildren(returnFiber, child.sibling);
          var existing = useFiber(child, portal.children || [], expirationTime);
          existing.return = returnFiber;
          return existing;
        } else {
          deleteRemainingChildren(returnFiber, child);
          break;
        }
      } else {
        deleteChild(returnFiber, child);
      }
      child = child.sibling;
    }

    var created = createFiberFromPortal(portal, returnFiber.mode, expirationTime);
    created.return = returnFiber;
    return created;
  }

  // This API will tag the children with the side-effect of the reconciliation
  // itself. They will be added to the side-effect list as we pass through the
  // children and the parent.
  function reconcileChildFibers(returnFiber, currentFirstChild, newChild, expirationTime) {
    // This function is not recursive.
    // If the top level item is an array, we treat it as a set of children,
    // not as a fragment. Nested arrays on the other hand will be treated as
    // fragment nodes. Recursion happens at the normal flow.

    // Handle top level unkeyed fragments as if they were arrays.
    // This leads to an ambiguity between <>{[...]}</> and <>...</>.
    // We treat the ambiguous cases above the same.
    var isUnkeyedTopLevelFragment = typeof newChild === 'object' && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null;
    if (isUnkeyedTopLevelFragment) {
      newChild = newChild.props.children;
    }

    // Handle object types
    var isObject = typeof newChild === 'object' && newChild !== null;

    if (isObject) {
      switch (newChild.$$typeof) {
        case REACT_ELEMENT_TYPE:
          return placeSingleChild(reconcileSingleElement(returnFiber, currentFirstChild, newChild, expirationTime));
        case REACT_PORTAL_TYPE:
          return placeSingleChild(reconcileSinglePortal(returnFiber, currentFirstChild, newChild, expirationTime));
      }
    }

    if (typeof newChild === 'string' || typeof newChild === 'number') {
      return placeSingleChild(reconcileSingleTextNode(returnFiber, currentFirstChild, '' + newChild, expirationTime));
    }

    if (isArray(newChild)) {
      return reconcileChildrenArray(returnFiber, currentFirstChild, newChild, expirationTime);
    }

    if (getIteratorFn(newChild)) {
      return reconcileChildrenIterator(returnFiber, currentFirstChild, newChild, expirationTime);
    }

    if (isObject) {
      throwOnInvalidObjectType(returnFiber, newChild);
    }

    {
      if (typeof newChild === 'function') {
        warnOnFunctionType();
      }
    }
    if (typeof newChild === 'undefined' && !isUnkeyedTopLevelFragment) {
      // If the new child is undefined, and the return fiber is a composite
      // component, throw an error. If Fiber return types are disabled,
      // we already threw above.
      switch (returnFiber.tag) {
        case ClassComponent:
          {
            {
              var instance = returnFiber.stateNode;
              if (instance.render._isMockFunction) {
                // We allow auto-mocks to proceed as if they're returning null.
                break;
              }
            }
          }
        // Intentionally fall through to the next case, which handles both
        // functions and classes
        // eslint-disable-next-lined no-fallthrough
        case FunctionComponent:
          {
            var Component = returnFiber.type;
            invariant(false, '%s(...): Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null.', Component.displayName || Component.name || 'Component');
          }
      }
    }

    // Remaining cases are all treated as empty.
    return deleteRemainingChildren(returnFiber, currentFirstChild);
  }

  return reconcileChildFibers;
}

var reconcileChildFibers = ChildReconciler(true);
var mountChildFibers = ChildReconciler(false);

function cloneChildFibers(current$$1, workInProgress) {
  !(current$$1 === null || workInProgress.child === current$$1.child) ? invariant(false, 'Resuming work not yet implemented.') : void 0;

  if (workInProgress.child === null) {
    return;
  }

  var currentChild = workInProgress.child;
  var newChild = createWorkInProgress(currentChild, currentChild.pendingProps, currentChild.expirationTime);
  workInProgress.child = newChild;

  newChild.return = workInProgress;
  while (currentChild.sibling !== null) {
    currentChild = currentChild.sibling;
    newChild = newChild.sibling = createWorkInProgress(currentChild, currentChild.pendingProps, currentChild.expirationTime);
    newChild.return = workInProgress;
  }
  newChild.sibling = null;
}

var NO_CONTEXT = {};

var contextStackCursor$1 = createCursor(NO_CONTEXT);
var contextFiberStackCursor = createCursor(NO_CONTEXT);
var rootInstanceStackCursor = createCursor(NO_CONTEXT);

function requiredContext(c) {
  !(c !== NO_CONTEXT) ? invariant(false, 'Expected host context to exist. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  return c;
}

function getRootHostContainer() {
  var rootInstance = requiredContext(rootInstanceStackCursor.current);
  return rootInstance;
}

function pushHostContainer(fiber, nextRootInstance) {
  // Push current root instance onto the stack;
  // This allows us to reset root when portals are popped.
  push(rootInstanceStackCursor, nextRootInstance, fiber);
  // Track the context and the Fiber that provided it.
  // This enables us to pop only Fibers that provide unique contexts.
  push(contextFiberStackCursor, fiber, fiber);

  // Finally, we need to push the host context to the stack.
  // However, we can't just call getRootHostContext() and push it because
  // we'd have a different number of entries on the stack depending on
  // whether getRootHostContext() throws somewhere in renderer code or not.
  // So we push an empty value first. This lets us safely unwind on errors.
  push(contextStackCursor$1, NO_CONTEXT, fiber);
  var nextRootContext = getRootHostContext(nextRootInstance);
  // Now that we know this function doesn't throw, replace it.
  pop(contextStackCursor$1, fiber);
  push(contextStackCursor$1, nextRootContext, fiber);
}

function popHostContainer(fiber) {
  pop(contextStackCursor$1, fiber);
  pop(contextFiberStackCursor, fiber);
  pop(rootInstanceStackCursor, fiber);
}

function getHostContext() {
  var context = requiredContext(contextStackCursor$1.current);
  return context;
}

function pushHostContext(fiber) {
  var rootInstance = requiredContext(rootInstanceStackCursor.current);
  var context = requiredContext(contextStackCursor$1.current);
  var nextContext = getChildHostContext(context, fiber.type, rootInstance);

  // Don't push this Fiber's context unless it's unique.
  if (context === nextContext) {
    return;
  }

  // Track the context and the Fiber that provided it.
  // This enables us to pop only Fibers that provide unique contexts.
  push(contextFiberStackCursor, fiber, fiber);
  push(contextStackCursor$1, nextContext, fiber);
}

function popHostContext(fiber) {
  // Do not pop unless this Fiber provided the current context.
  // pushHostContext() only pushes Fibers that provide unique contexts.
  if (contextFiberStackCursor.current !== fiber) {
    return;
  }

  pop(contextStackCursor$1, fiber);
  pop(contextFiberStackCursor, fiber);
}

var NoEffect$1 = /*             */0;
var UnmountSnapshot = /*      */2;
var UnmountMutation = /*      */4;
var MountMutation = /*        */8;
var UnmountLayout = /*        */16;
var MountLayout = /*          */32;
var MountPassive = /*         */64;
var UnmountPassive = /*       */128;

var ReactCurrentDispatcher$1 = ReactSharedInternals.ReactCurrentDispatcher;


var didWarnAboutMismatchedHooksForComponent = void 0;
{
  didWarnAboutMismatchedHooksForComponent = new Set();
}

// These are set right before calling the component.
var renderExpirationTime = NoWork;
// The work-in-progress fiber. I've named it differently to distinguish it from
// the work-in-progress hook.
var currentlyRenderingFiber$1 = null;

// Hooks are stored as a linked list on the fiber's memoizedState field. The
// current hook list is the list that belongs to the current fiber. The
// work-in-progress hook list is a new list that will be added to the
// work-in-progress fiber.
var firstCurrentHook = null;
var currentHook = null;
var nextCurrentHook = null;
var firstWorkInProgressHook = null;
var workInProgressHook = null;
var nextWorkInProgressHook = null;

var remainingExpirationTime = NoWork;
var componentUpdateQueue = null;
var sideEffectTag = 0;

// Updates scheduled during render will trigger an immediate re-render at the
// end of the current pass. We can't store these updates on the normal queue,
// because if the work is aborted, they should be discarded. Because this is
// a relatively rare case, we also don't want to add an additional field to
// either the hook or queue object types. So we store them in a lazily create
// map of queue -> render-phase updates, which are discarded once the component
// completes without re-rendering.

// Whether an update was scheduled during the currently executing render pass.
var didScheduleRenderPhaseUpdate = false;
// Lazily created map of render-phase updates
var renderPhaseUpdates = null;
// Counter to prevent infinite loops.
var numberOfReRenders = 0;
var RE_RENDER_LIMIT = 25;

// In DEV, this is the name of the currently executing primitive hook
var currentHookNameInDev = null;

function warnOnHookMismatchInDev() {
  {
    var componentName = getComponentName(currentlyRenderingFiber$1.type);
    if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) {
      didWarnAboutMismatchedHooksForComponent.add(componentName);

      var secondColumnStart = 22;

      var table = '';
      var prevHook = firstCurrentHook;
      var nextHook = firstWorkInProgressHook;
      var n = 1;
      while (prevHook !== null && nextHook !== null) {
        var oldHookName = prevHook._debugType;
        var newHookName = nextHook._debugType;

        var row = n + '. ' + oldHookName;

        // Extra space so second column lines up
        // lol @ IE not supporting String#repeat
        while (row.length < secondColumnStart) {
          row += ' ';
        }

        row += newHookName + '\n';

        table += row;
        prevHook = prevHook.next;
        nextHook = nextHook.next;
        n++;
      }

      warning$1(false, 'React has detected a change in the order of Hooks called by %s. ' + 'This will lead to bugs and errors if not fixed. ' + 'For more information, read the Rules of Hooks: https://fb.me/rules-of-hooks\n\n' + '   Previous render    Next render\n' + '   -------------------------------\n' + '%s' + '   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n', componentName, table);
    }
  }
}

function throwInvalidHookError() {
  invariant(false, 'Hooks can only be called inside the body of a function component. (https://fb.me/react-invalid-hook-call)');
}

function areHookInputsEqual(nextDeps, prevDeps) {
  if (prevDeps === null) {
    {
      warning$1(false, '%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev);
    }
    return false;
  }

  {
    // Don't bother comparing lengths in prod because these arrays should be
    // passed inline.
    if (nextDeps.length !== prevDeps.length) {
      warning$1(false, 'The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, '[' + nextDeps.join(', ') + ']', '[' + prevDeps.join(', ') + ']');
    }
  }
  for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
    if (is(nextDeps[i], prevDeps[i])) {
      continue;
    }
    return false;
  }
  return true;
}

function renderWithHooks(current, workInProgress, Component, props, refOrContext, nextRenderExpirationTime) {
  renderExpirationTime = nextRenderExpirationTime;
  currentlyRenderingFiber$1 = workInProgress;
  firstCurrentHook = nextCurrentHook = current !== null ? current.memoizedState : null;

  // The following should have already been reset
  // currentHook = null;
  // workInProgressHook = null;

  // remainingExpirationTime = NoWork;
  // componentUpdateQueue = null;

  // didScheduleRenderPhaseUpdate = false;
  // renderPhaseUpdates = null;
  // numberOfReRenders = 0;
  // sideEffectTag = 0;

  {
    ReactCurrentDispatcher$1.current = nextCurrentHook === null ? HooksDispatcherOnMountInDEV : HooksDispatcherOnUpdateInDEV;
  }

  var children = Component(props, refOrContext);

  if (didScheduleRenderPhaseUpdate) {
    do {
      didScheduleRenderPhaseUpdate = false;
      numberOfReRenders += 1;

      // Start over from the beginning of the list
      firstCurrentHook = nextCurrentHook = current !== null ? current.memoizedState : null;
      nextWorkInProgressHook = firstWorkInProgressHook;

      currentHook = null;
      workInProgressHook = null;
      componentUpdateQueue = null;

      ReactCurrentDispatcher$1.current = HooksDispatcherOnUpdateInDEV;

      children = Component(props, refOrContext);
    } while (didScheduleRenderPhaseUpdate);

    renderPhaseUpdates = null;
    numberOfReRenders = 0;
  }

  {
    currentHookNameInDev = null;
  }

  // We can assume the previous dispatcher is always this one, since we set it
  // at the beginning of the render phase and there's no re-entrancy.
  ReactCurrentDispatcher$1.current = ContextOnlyDispatcher;

  var renderedWork = currentlyRenderingFiber$1;

  renderedWork.memoizedState = firstWorkInProgressHook;
  renderedWork.expirationTime = remainingExpirationTime;
  renderedWork.updateQueue = componentUpdateQueue;
  renderedWork.effectTag |= sideEffectTag;

  var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null;

  renderExpirationTime = NoWork;
  currentlyRenderingFiber$1 = null;

  firstCurrentHook = null;
  currentHook = null;
  nextCurrentHook = null;
  firstWorkInProgressHook = null;
  workInProgressHook = null;
  nextWorkInProgressHook = null;

  remainingExpirationTime = NoWork;
  componentUpdateQueue = null;
  sideEffectTag = 0;

  // These were reset above
  // didScheduleRenderPhaseUpdate = false;
  // renderPhaseUpdates = null;
  // numberOfReRenders = 0;

  !!didRenderTooFewHooks ? invariant(false, 'Rendered fewer hooks than expected. This may be caused by an accidental early return statement.') : void 0;

  return children;
}

function bailoutHooks(current, workInProgress, expirationTime) {
  workInProgress.updateQueue = current.updateQueue;
  workInProgress.effectTag &= ~(Passive | Update);
  if (current.expirationTime <= expirationTime) {
    current.expirationTime = NoWork;
  }
}

function resetHooks() {
  // We can assume the previous dispatcher is always this one, since we set it
  // at the beginning of the render phase and there's no re-entrancy.
  ReactCurrentDispatcher$1.current = ContextOnlyDispatcher;

  // This is used to reset the state of this module when a component throws.
  // It's also called inside mountIndeterminateComponent if we determine the
  // component is a module-style component.
  renderExpirationTime = NoWork;
  currentlyRenderingFiber$1 = null;

  firstCurrentHook = null;
  currentHook = null;
  nextCurrentHook = null;
  firstWorkInProgressHook = null;
  workInProgressHook = null;
  nextWorkInProgressHook = null;

  remainingExpirationTime = NoWork;
  componentUpdateQueue = null;
  sideEffectTag = 0;

  {
    currentHookNameInDev = null;
  }

  didScheduleRenderPhaseUpdate = false;
  renderPhaseUpdates = null;
  numberOfReRenders = 0;
}

function mountWorkInProgressHook() {
  var hook = {
    memoizedState: null,

    baseState: null,
    queue: null,
    baseUpdate: null,

    next: null
  };

  {
    hook._debugType = currentHookNameInDev;
  }
  if (workInProgressHook === null) {
    // This is the first hook in the list
    firstWorkInProgressHook = workInProgressHook = hook;
  } else {
    // Append to the end of the list
    workInProgressHook = workInProgressHook.next = hook;
  }
  return workInProgressHook;
}

function updateWorkInProgressHook() {
  // This function is used both for updates and for re-renders triggered by a
  // render phase update. It assumes there is either a current hook we can
  // clone, or a work-in-progress hook from a previous render pass that we can
  // use as a base. When we reach the end of the base list, we must switch to
  // the dispatcher used for mounts.
  if (nextWorkInProgressHook !== null) {
    // There's already a work-in-progress. Reuse it.
    workInProgressHook = nextWorkInProgressHook;
    nextWorkInProgressHook = workInProgressHook.next;

    currentHook = nextCurrentHook;
    nextCurrentHook = currentHook !== null ? currentHook.next : null;
  } else {
    // Clone from the current hook.
    !(nextCurrentHook !== null) ? invariant(false, 'Rendered more hooks than during the previous render.') : void 0;
    currentHook = nextCurrentHook;

    var newHook = {
      memoizedState: currentHook.memoizedState,

      baseState: currentHook.baseState,
      queue: currentHook.queue,
      baseUpdate: currentHook.baseUpdate,

      next: null
    };

    if (workInProgressHook === null) {
      // This is the first hook in the list.
      workInProgressHook = firstWorkInProgressHook = newHook;
    } else {
      // Append to the end of the list.
      workInProgressHook = workInProgressHook.next = newHook;
    }
    nextCurrentHook = currentHook.next;

    {
      newHook._debugType = currentHookNameInDev;
      if (currentHookNameInDev !== currentHook._debugType) {
        warnOnHookMismatchInDev();
      }
    }
  }
  return workInProgressHook;
}

function createFunctionComponentUpdateQueue() {
  return {
    lastEffect: null
  };
}

function basicStateReducer(state, action) {
  return typeof action === 'function' ? action(state) : action;
}

function mountContext(context, observedBits) {
  {
    mountWorkInProgressHook();
  }
  return readContext(context, observedBits);
}

function updateContext(context, observedBits) {
  {
    updateWorkInProgressHook();
  }
  return readContext(context, observedBits);
}

function mountReducer(reducer, initialArg, init) {
  var hook = mountWorkInProgressHook();
  var initialState = void 0;
  if (init !== undefined) {
    initialState = init(initialArg);
  } else {
    initialState = initialArg;
  }
  hook.memoizedState = hook.baseState = initialState;
  var queue = hook.queue = {
    last: null,
    dispatch: null,
    eagerReducer: reducer,
    eagerState: initialState
  };
  var dispatch = queue.dispatch = dispatchAction.bind(null,
  // Flow doesn't know this is non-null, but we do.
  currentlyRenderingFiber$1, queue);
  return [hook.memoizedState, dispatch];
}

function updateReducer(reducer, initialArg, init) {
  var hook = updateWorkInProgressHook();
  var queue = hook.queue;
  !(queue !== null) ? invariant(false, 'Should have a queue. This is likely a bug in React. Please file an issue.') : void 0;

  if (numberOfReRenders > 0) {
    // This is a re-render. Apply the new render phase updates to the previous
    var _dispatch = queue.dispatch;
    if (renderPhaseUpdates !== null) {
      // Render phase updates are stored in a map of queue -> linked list
      var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
      if (firstRenderPhaseUpdate !== undefined) {
        renderPhaseUpdates.delete(queue);
        var newState = hook.memoizedState;
        var update = firstRenderPhaseUpdate;
        do {
          // Process this render phase update. We don't have to check the
          // priority because it will always be the same as the current
          // render's.
          var _action = update.action;
          newState = reducer(newState, _action);
          update = update.next;
        } while (update !== null);

        // Mark that the fiber performed work, but only if the new state is
        // different from the current state.
        if (!is(newState, hook.memoizedState)) {
          markWorkInProgressReceivedUpdate();
        }

        hook.memoizedState = newState;
        // Don't persist the state accumlated from the render phase updates to
        // the base state unless the queue is empty.
        // TODO: Not sure if this is the desired semantics, but it's what we
        // do for gDSFP. I can't remember why.
        if (hook.baseUpdate === queue.last) {
          hook.baseState = newState;
        }

        queue.eagerReducer = reducer;
        queue.eagerState = newState;

        return [newState, _dispatch];
      }
    }
    return [hook.memoizedState, _dispatch];
  }

  // The last update in the entire queue
  var last = queue.last;
  // The last update that is part of the base state.
  var baseUpdate = hook.baseUpdate;
  var baseState = hook.baseState;

  // Find the first unprocessed update.
  var first = void 0;
  if (baseUpdate !== null) {
    if (last !== null) {
      // For the first update, the queue is a circular linked list where
      // `queue.last.next = queue.first`. Once the first update commits, and
      // the `baseUpdate` is no longer empty, we can unravel the list.
      last.next = null;
    }
    first = baseUpdate.next;
  } else {
    first = last !== null ? last.next : null;
  }
  if (first !== null) {
    var _newState = baseState;
    var newBaseState = null;
    var newBaseUpdate = null;
    var prevUpdate = baseUpdate;
    var _update = first;
    var didSkip = false;
    do {
      var updateExpirationTime = _update.expirationTime;
      if (updateExpirationTime < renderExpirationTime) {
        // Priority is insufficient. Skip this update. If this is the first
        // skipped update, the previous update/state is the new base
        // update/state.
        if (!didSkip) {
          didSkip = true;
          newBaseUpdate = prevUpdate;
          newBaseState = _newState;
        }
        // Update the remaining priority in the queue.
        if (updateExpirationTime > remainingExpirationTime) {
          remainingExpirationTime = updateExpirationTime;
        }
      } else {
        // Process this update.
        if (_update.eagerReducer === reducer) {
          // If this update was processed eagerly, and its reducer matches the
          // current reducer, we can use the eagerly computed state.
          _newState = _update.eagerState;
        } else {
          var _action2 = _update.action;
          _newState = reducer(_newState, _action2);
        }
      }
      prevUpdate = _update;
      _update = _update.next;
    } while (_update !== null && _update !== first);

    if (!didSkip) {
      newBaseUpdate = prevUpdate;
      newBaseState = _newState;
    }

    // Mark that the fiber performed work, but only if the new state is
    // different from the current state.
    if (!is(_newState, hook.memoizedState)) {
      markWorkInProgressReceivedUpdate();
    }

    hook.memoizedState = _newState;
    hook.baseUpdate = newBaseUpdate;
    hook.baseState = newBaseState;

    queue.eagerReducer = reducer;
    queue.eagerState = _newState;
  }

  var dispatch = queue.dispatch;
  return [hook.memoizedState, dispatch];
}

function mountState(initialState) {
  var hook = mountWorkInProgressHook();
  if (typeof initialState === 'function') {
    initialState = initialState();
  }
  hook.memoizedState = hook.baseState = initialState;
  var queue = hook.queue = {
    last: null,
    dispatch: null,
    eagerReducer: basicStateReducer,
    eagerState: initialState
  };
  var dispatch = queue.dispatch = dispatchAction.bind(null,
  // Flow doesn't know this is non-null, but we do.
  currentlyRenderingFiber$1, queue);
  return [hook.memoizedState, dispatch];
}

function updateState(initialState) {
  return updateReducer(basicStateReducer, initialState);
}

function pushEffect(tag, create, destroy, deps) {
  var effect = {
    tag: tag,
    create: create,
    destroy: destroy,
    deps: deps,
    // Circular
    next: null
  };
  if (componentUpdateQueue === null) {
    componentUpdateQueue = createFunctionComponentUpdateQueue();
    componentUpdateQueue.lastEffect = effect.next = effect;
  } else {
    var _lastEffect = componentUpdateQueue.lastEffect;
    if (_lastEffect === null) {
      componentUpdateQueue.lastEffect = effect.next = effect;
    } else {
      var firstEffect = _lastEffect.next;
      _lastEffect.next = effect;
      effect.next = firstEffect;
      componentUpdateQueue.lastEffect = effect;
    }
  }
  return effect;
}

function mountRef(initialValue) {
  var hook = mountWorkInProgressHook();
  var ref = { current: initialValue };
  {
    Object.seal(ref);
  }
  hook.memoizedState = ref;
  return ref;
}

function updateRef(initialValue) {
  var hook = updateWorkInProgressHook();
  return hook.memoizedState;
}

function mountEffectImpl(fiberEffectTag, hookEffectTag, create, deps) {
  var hook = mountWorkInProgressHook();
  var nextDeps = deps === undefined ? null : deps;
  sideEffectTag |= fiberEffectTag;
  hook.memoizedState = pushEffect(hookEffectTag, create, undefined, nextDeps);
}

function updateEffectImpl(fiberEffectTag, hookEffectTag, create, deps) {
  var hook = updateWorkInProgressHook();
  var nextDeps = deps === undefined ? null : deps;
  var destroy = undefined;

  if (currentHook !== null) {
    var prevEffect = currentHook.memoizedState;
    destroy = prevEffect.destroy;
    if (nextDeps !== null) {
      var prevDeps = prevEffect.deps;
      if (areHookInputsEqual(nextDeps, prevDeps)) {
        pushEffect(NoEffect$1, create, destroy, nextDeps);
        return;
      }
    }
  }

  sideEffectTag |= fiberEffectTag;
  hook.memoizedState = pushEffect(hookEffectTag, create, destroy, nextDeps);
}

function mountEffect(create, deps) {
  return mountEffectImpl(Update | Passive, UnmountPassive | MountPassive, create, deps);
}

function updateEffect(create, deps) {
  return updateEffectImpl(Update | Passive, UnmountPassive | MountPassive, create, deps);
}

function mountLayoutEffect(create, deps) {
  return mountEffectImpl(Update, UnmountMutation | MountLayout, create, deps);
}

function updateLayoutEffect(create, deps) {
  return updateEffectImpl(Update, UnmountMutation | MountLayout, create, deps);
}

function imperativeHandleEffect(create, ref) {
  if (typeof ref === 'function') {
    var refCallback = ref;
    var _inst = create();
    refCallback(_inst);
    return function () {
      refCallback(null);
    };
  } else if (ref !== null && ref !== undefined) {
    var refObject = ref;
    {
      !refObject.hasOwnProperty('current') ? warning$1(false, 'Expected useImperativeHandle() first argument to either be a ' + 'ref callback or React.createRef() object. Instead received: %s.', 'an object with keys {' + Object.keys(refObject).join(', ') + '}') : void 0;
    }
    var _inst2 = create();
    refObject.current = _inst2;
    return function () {
      refObject.current = null;
    };
  }
}

function mountImperativeHandle(ref, create, deps) {
  {
    !(typeof create === 'function') ? warning$1(false, 'Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null') : void 0;
  }

  // TODO: If deps are provided, should we skip comparing the ref itself?
  var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null;

  return mountEffectImpl(Update, UnmountMutation | MountLayout, imperativeHandleEffect.bind(null, create, ref), effectDeps);
}

function updateImperativeHandle(ref, create, deps) {
  {
    !(typeof create === 'function') ? warning$1(false, 'Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null') : void 0;
  }

  // TODO: If deps are provided, should we skip comparing the ref itself?
  var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null;

  return updateEffectImpl(Update, UnmountMutation | MountLayout, imperativeHandleEffect.bind(null, create, ref), effectDeps);
}

function mountDebugValue(value, formatterFn) {
  // This hook is normally a no-op.
  // The react-debug-hooks package injects its own implementation
  // so that e.g. DevTools can display custom hook values.
}

var updateDebugValue = mountDebugValue;

function mountCallback(callback, deps) {
  var hook = mountWorkInProgressHook();
  var nextDeps = deps === undefined ? null : deps;
  hook.memoizedState = [callback, nextDeps];
  return callback;
}

function updateCallback(callback, deps) {
  var hook = updateWorkInProgressHook();
  var nextDeps = deps === undefined ? null : deps;
  var prevState = hook.memoizedState;
  if (prevState !== null) {
    if (nextDeps !== null) {
      var prevDeps = prevState[1];
      if (areHookInputsEqual(nextDeps, prevDeps)) {
        return prevState[0];
      }
    }
  }
  hook.memoizedState = [callback, nextDeps];
  return callback;
}

function mountMemo(nextCreate, deps) {
  var hook = mountWorkInProgressHook();
  var nextDeps = deps === undefined ? null : deps;
  var nextValue = nextCreate();
  hook.memoizedState = [nextValue, nextDeps];
  return nextValue;
}

function updateMemo(nextCreate, deps) {
  var hook = updateWorkInProgressHook();
  var nextDeps = deps === undefined ? null : deps;
  var prevState = hook.memoizedState;
  if (prevState !== null) {
    // Assume these are defined. If they're not, areHookInputsEqual will warn.
    if (nextDeps !== null) {
      var prevDeps = prevState[1];
      if (areHookInputsEqual(nextDeps, prevDeps)) {
        return prevState[0];
      }
    }
  }
  var nextValue = nextCreate();
  hook.memoizedState = [nextValue, nextDeps];
  return nextValue;
}

// in a test-like environment, we want to warn if dispatchAction()
// is called outside of a batchedUpdates/TestUtils.act(...) call.
var shouldWarnForUnbatchedSetState = false;

{
  // jest isn't a 'global', it's just exposed to tests via a wrapped function
  // further, this isn't a test file, so flow doesn't recognize the symbol. So...
  // $FlowExpectedError - because requirements don't give a damn about your type sigs.
  if ('undefined' !== typeof jest) {
    shouldWarnForUnbatchedSetState = true;
  }
}

function dispatchAction(fiber, queue, action) {
  !(numberOfReRenders < RE_RENDER_LIMIT) ? invariant(false, 'Too many re-renders. React limits the number of renders to prevent an infinite loop.') : void 0;

  {
    !(arguments.length <= 3) ? warning$1(false, "State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().') : void 0;
  }

  var alternate = fiber.alternate;
  if (fiber === currentlyRenderingFiber$1 || alternate !== null && alternate === currentlyRenderingFiber$1) {
    // This is a render phase update. Stash it in a lazily-created map of
    // queue -> linked list of updates. After this render pass, we'll restart
    // and apply the stashed updates on top of the work-in-progress hook.
    didScheduleRenderPhaseUpdate = true;
    var update = {
      expirationTime: renderExpirationTime,
      action: action,
      eagerReducer: null,
      eagerState: null,
      next: null
    };
    if (renderPhaseUpdates === null) {
      renderPhaseUpdates = new Map();
    }
    var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
    if (firstRenderPhaseUpdate === undefined) {
      renderPhaseUpdates.set(queue, update);
    } else {
      // Append the update to the end of the list.
      var lastRenderPhaseUpdate = firstRenderPhaseUpdate;
      while (lastRenderPhaseUpdate.next !== null) {
        lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;
      }
      lastRenderPhaseUpdate.next = update;
    }
  } else {
    flushPassiveEffects();

    var currentTime = requestCurrentTime();
    var _expirationTime = computeExpirationForFiber(currentTime, fiber);

    var _update2 = {
      expirationTime: _expirationTime,
      action: action,
      eagerReducer: null,
      eagerState: null,
      next: null
    };

    // Append the update to the end of the list.
    var _last = queue.last;
    if (_last === null) {
      // This is the first update. Create a circular list.
      _update2.next = _update2;
    } else {
      var first = _last.next;
      if (first !== null) {
        // Still circular.
        _update2.next = first;
      }
      _last.next = _update2;
    }
    queue.last = _update2;

    if (fiber.expirationTime === NoWork && (alternate === null || alternate.expirationTime === NoWork)) {
      // The queue is currently empty, which means we can eagerly compute the
      // next state before entering the render phase. If the new state is the
      // same as the current state, we may be able to bail out entirely.
      var _eagerReducer = queue.eagerReducer;
      if (_eagerReducer !== null) {
        var prevDispatcher = void 0;
        {
          prevDispatcher = ReactCurrentDispatcher$1.current;
          ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
        }
        try {
          var currentState = queue.eagerState;
          var _eagerState = _eagerReducer(currentState, action);
          // Stash the eagerly computed state, and the reducer used to compute
          // it, on the update object. If the reducer hasn't changed by the
          // time we enter the render phase, then the eager state can be used
          // without calling the reducer again.
          _update2.eagerReducer = _eagerReducer;
          _update2.eagerState = _eagerState;
          if (is(_eagerState, currentState)) {
            // Fast path. We can bail out without scheduling React to re-render.
            // It's still possible that we'll need to rebase this update later,
            // if the component re-renders for a different reason and by that
            // time the reducer has changed.
            return;
          }
        } catch (error) {
          // Suppress the error. It will throw again in the render phase.
        } finally {
          {
            ReactCurrentDispatcher$1.current = prevDispatcher;
          }
        }
      }
    }
    {
      if (shouldWarnForUnbatchedSetState === true) {
        warnIfNotCurrentlyBatchingInDev(fiber);
      }
    }
    scheduleWork(fiber, _expirationTime);
  }
}

var ContextOnlyDispatcher = {
  readContext: readContext,

  useCallback: throwInvalidHookError,
  useContext: throwInvalidHookError,
  useEffect: throwInvalidHookError,
  useImperativeHandle: throwInvalidHookError,
  useLayoutEffect: throwInvalidHookError,
  useMemo: throwInvalidHookError,
  useReducer: throwInvalidHookError,
  useRef: throwInvalidHookError,
  useState: throwInvalidHookError,
  useDebugValue: throwInvalidHookError
};

var HooksDispatcherOnMountInDEV = null;
var HooksDispatcherOnUpdateInDEV = null;
var InvalidNestedHooksDispatcherOnMountInDEV = null;
var InvalidNestedHooksDispatcherOnUpdateInDEV = null;

{
  var warnInvalidContextAccess = function () {
    warning$1(false, 'Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
  };

  var warnInvalidHookAccess = function () {
    warning$1(false, 'Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://fb.me/rules-of-hooks');
  };

  HooksDispatcherOnMountInDEV = {
    readContext: function (context, observedBits) {
      return readContext(context, observedBits);
    },
    useCallback: function (callback, deps) {
      currentHookNameInDev = 'useCallback';
      return mountCallback(callback, deps);
    },
    useContext: function (context, observedBits) {
      currentHookNameInDev = 'useContext';
      return mountContext(context, observedBits);
    },
    useEffect: function (create, deps) {
      currentHookNameInDev = 'useEffect';
      return mountEffect(create, deps);
    },
    useImperativeHandle: function (ref, create, deps) {
      currentHookNameInDev = 'useImperativeHandle';
      return mountImperativeHandle(ref, create, deps);
    },
    useLayoutEffect: function (create, deps) {
      currentHookNameInDev = 'useLayoutEffect';
      return mountLayoutEffect(create, deps);
    },
    useMemo: function (create, deps) {
      currentHookNameInDev = 'useMemo';
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV;
      try {
        return mountMemo(create, deps);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useReducer: function (reducer, initialArg, init) {
      currentHookNameInDev = 'useReducer';
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV;
      try {
        return mountReducer(reducer, initialArg, init);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useRef: function (initialValue) {
      currentHookNameInDev = 'useRef';
      return mountRef(initialValue);
    },
    useState: function (initialState) {
      currentHookNameInDev = 'useState';
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV;
      try {
        return mountState(initialState);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useDebugValue: function (value, formatterFn) {
      currentHookNameInDev = 'useDebugValue';
      return mountDebugValue(value, formatterFn);
    }
  };

  HooksDispatcherOnUpdateInDEV = {
    readContext: function (context, observedBits) {
      return readContext(context, observedBits);
    },
    useCallback: function (callback, deps) {
      currentHookNameInDev = 'useCallback';
      return updateCallback(callback, deps);
    },
    useContext: function (context, observedBits) {
      currentHookNameInDev = 'useContext';
      return updateContext(context, observedBits);
    },
    useEffect: function (create, deps) {
      currentHookNameInDev = 'useEffect';
      return updateEffect(create, deps);
    },
    useImperativeHandle: function (ref, create, deps) {
      currentHookNameInDev = 'useImperativeHandle';
      return updateImperativeHandle(ref, create, deps);
    },
    useLayoutEffect: function (create, deps) {
      currentHookNameInDev = 'useLayoutEffect';
      return updateLayoutEffect(create, deps);
    },
    useMemo: function (create, deps) {
      currentHookNameInDev = 'useMemo';
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
      try {
        return updateMemo(create, deps);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useReducer: function (reducer, initialArg, init) {
      currentHookNameInDev = 'useReducer';
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
      try {
        return updateReducer(reducer, initialArg, init);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useRef: function (initialValue) {
      currentHookNameInDev = 'useRef';
      return updateRef(initialValue);
    },
    useState: function (initialState) {
      currentHookNameInDev = 'useState';
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
      try {
        return updateState(initialState);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useDebugValue: function (value, formatterFn) {
      currentHookNameInDev = 'useDebugValue';
      return updateDebugValue(value, formatterFn);
    }
  };

  InvalidNestedHooksDispatcherOnMountInDEV = {
    readContext: function (context, observedBits) {
      warnInvalidContextAccess();
      return readContext(context, observedBits);
    },
    useCallback: function (callback, deps) {
      currentHookNameInDev = 'useCallback';
      warnInvalidHookAccess();
      return mountCallback(callback, deps);
    },
    useContext: function (context, observedBits) {
      currentHookNameInDev = 'useContext';
      warnInvalidHookAccess();
      return mountContext(context, observedBits);
    },
    useEffect: function (create, deps) {
      currentHookNameInDev = 'useEffect';
      warnInvalidHookAccess();
      return mountEffect(create, deps);
    },
    useImperativeHandle: function (ref, create, deps) {
      currentHookNameInDev = 'useImperativeHandle';
      warnInvalidHookAccess();
      return mountImperativeHandle(ref, create, deps);
    },
    useLayoutEffect: function (create, deps) {
      currentHookNameInDev = 'useLayoutEffect';
      warnInvalidHookAccess();
      return mountLayoutEffect(create, deps);
    },
    useMemo: function (create, deps) {
      currentHookNameInDev = 'useMemo';
      warnInvalidHookAccess();
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV;
      try {
        return mountMemo(create, deps);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useReducer: function (reducer, initialArg, init) {
      currentHookNameInDev = 'useReducer';
      warnInvalidHookAccess();
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV;
      try {
        return mountReducer(reducer, initialArg, init);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useRef: function (initialValue) {
      currentHookNameInDev = 'useRef';
      warnInvalidHookAccess();
      return mountRef(initialValue);
    },
    useState: function (initialState) {
      currentHookNameInDev = 'useState';
      warnInvalidHookAccess();
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV;
      try {
        return mountState(initialState);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useDebugValue: function (value, formatterFn) {
      currentHookNameInDev = 'useDebugValue';
      warnInvalidHookAccess();
      return mountDebugValue(value, formatterFn);
    }
  };

  InvalidNestedHooksDispatcherOnUpdateInDEV = {
    readContext: function (context, observedBits) {
      warnInvalidContextAccess();
      return readContext(context, observedBits);
    },
    useCallback: function (callback, deps) {
      currentHookNameInDev = 'useCallback';
      warnInvalidHookAccess();
      return updateCallback(callback, deps);
    },
    useContext: function (context, observedBits) {
      currentHookNameInDev = 'useContext';
      warnInvalidHookAccess();
      return updateContext(context, observedBits);
    },
    useEffect: function (create, deps) {
      currentHookNameInDev = 'useEffect';
      warnInvalidHookAccess();
      return updateEffect(create, deps);
    },
    useImperativeHandle: function (ref, create, deps) {
      currentHookNameInDev = 'useImperativeHandle';
      warnInvalidHookAccess();
      return updateImperativeHandle(ref, create, deps);
    },
    useLayoutEffect: function (create, deps) {
      currentHookNameInDev = 'useLayoutEffect';
      warnInvalidHookAccess();
      return updateLayoutEffect(create, deps);
    },
    useMemo: function (create, deps) {
      currentHookNameInDev = 'useMemo';
      warnInvalidHookAccess();
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
      try {
        return updateMemo(create, deps);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useReducer: function (reducer, initialArg, init) {
      currentHookNameInDev = 'useReducer';
      warnInvalidHookAccess();
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
      try {
        return updateReducer(reducer, initialArg, init);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useRef: function (initialValue) {
      currentHookNameInDev = 'useRef';
      warnInvalidHookAccess();
      return updateRef(initialValue);
    },
    useState: function (initialState) {
      currentHookNameInDev = 'useState';
      warnInvalidHookAccess();
      var prevDispatcher = ReactCurrentDispatcher$1.current;
      ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
      try {
        return updateState(initialState);
      } finally {
        ReactCurrentDispatcher$1.current = prevDispatcher;
      }
    },
    useDebugValue: function (value, formatterFn) {
      currentHookNameInDev = 'useDebugValue';
      warnInvalidHookAccess();
      return updateDebugValue(value, formatterFn);
    }
  };
}

var commitTime = 0;
var profilerStartTime = -1;

function getCommitTime() {
  return commitTime;
}

function recordCommitTime() {
  if (!enableProfilerTimer) {
    return;
  }
  commitTime = scheduler.unstable_now();
}

function startProfilerTimer(fiber) {
  if (!enableProfilerTimer) {
    return;
  }

  profilerStartTime = scheduler.unstable_now();

  if (fiber.actualStartTime < 0) {
    fiber.actualStartTime = scheduler.unstable_now();
  }
}

function stopProfilerTimerIfRunning(fiber) {
  if (!enableProfilerTimer) {
    return;
  }
  profilerStartTime = -1;
}

function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
  if (!enableProfilerTimer) {
    return;
  }

  if (profilerStartTime >= 0) {
    var elapsedTime = scheduler.unstable_now() - profilerStartTime;
    fiber.actualDuration += elapsedTime;
    if (overrideBaseTime) {
      fiber.selfBaseDuration = elapsedTime;
    }
    profilerStartTime = -1;
  }
}

// The deepest Fiber on the stack involved in a hydration context.
// This may have been an insertion or a hydration.
var hydrationParentFiber = null;
var nextHydratableInstance = null;
var isHydrating = false;

function enterHydrationState(fiber) {
  if (!supportsHydration) {
    return false;
  }

  var parentInstance = fiber.stateNode.containerInfo;
  nextHydratableInstance = getFirstHydratableChild(parentInstance);
  hydrationParentFiber = fiber;
  isHydrating = true;
  return true;
}

function reenterHydrationStateFromDehydratedSuspenseInstance(fiber) {
  if (!supportsHydration) {
    return false;
  }

  var suspenseInstance = fiber.stateNode;
  nextHydratableInstance = getNextHydratableSibling(suspenseInstance);
  popToNextHostParent(fiber);
  isHydrating = true;
  return true;
}

function deleteHydratableInstance(returnFiber, instance) {
  {
    switch (returnFiber.tag) {
      case HostRoot:
        didNotHydrateContainerInstance(returnFiber.stateNode.containerInfo, instance);
        break;
      case HostComponent:
        didNotHydrateInstance(returnFiber.type, returnFiber.memoizedProps, returnFiber.stateNode, instance);
        break;
    }
  }

  var childToDelete = createFiberFromHostInstanceForDeletion();
  childToDelete.stateNode = instance;
  childToDelete.return = returnFiber;
  childToDelete.effectTag = Deletion;

  // This might seem like it belongs on progressedFirstDeletion. However,
  // these children are not part of the reconciliation list of children.
  // Even if we abort and rereconcile the children, that will try to hydrate
  // again and the nodes are still in the host tree so these will be
  // recreated.
  if (returnFiber.lastEffect !== null) {
    returnFiber.lastEffect.nextEffect = childToDelete;
    returnFiber.lastEffect = childToDelete;
  } else {
    returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;
  }
}

function insertNonHydratedInstance(returnFiber, fiber) {
  fiber.effectTag |= Placement;
  {
    switch (returnFiber.tag) {
      case HostRoot:
        {
          var parentContainer = returnFiber.stateNode.containerInfo;
          switch (fiber.tag) {
            case HostComponent:
              var type = fiber.type;
              var props = fiber.pendingProps;
              didNotFindHydratableContainerInstance(parentContainer, type, props);
              break;
            case HostText:
              var text = fiber.pendingProps;
              didNotFindHydratableContainerTextInstance(parentContainer, text);
              break;
            case SuspenseComponent:
              
              break;
          }
          break;
        }
      case HostComponent:
        {
          var parentType = returnFiber.type;
          var parentProps = returnFiber.memoizedProps;
          var parentInstance = returnFiber.stateNode;
          switch (fiber.tag) {
            case HostComponent:
              var _type = fiber.type;
              var _props = fiber.pendingProps;
              didNotFindHydratableInstance(parentType, parentProps, parentInstance, _type, _props);
              break;
            case HostText:
              var _text = fiber.pendingProps;
              didNotFindHydratableTextInstance(parentType, parentProps, parentInstance, _text);
              break;
            case SuspenseComponent:
              didNotFindHydratableSuspenseInstance(parentType, parentProps, parentInstance);
              break;
          }
          break;
        }
      default:
        return;
    }
  }
}

function tryHydrate(fiber, nextInstance) {
  switch (fiber.tag) {
    case HostComponent:
      {
        var type = fiber.type;
        var props = fiber.pendingProps;
        var instance = canHydrateInstance(nextInstance, type, props);
        if (instance !== null) {
          fiber.stateNode = instance;
          return true;
        }
        return false;
      }
    case HostText:
      {
        var text = fiber.pendingProps;
        var textInstance = canHydrateTextInstance(nextInstance, text);
        if (textInstance !== null) {
          fiber.stateNode = textInstance;
          return true;
        }
        return false;
      }
    case SuspenseComponent:
      {
        if (enableSuspenseServerRenderer) {
          var suspenseInstance = canHydrateSuspenseInstance(nextInstance);
          if (suspenseInstance !== null) {
            // Downgrade the tag to a dehydrated component until we've hydrated it.
            fiber.tag = DehydratedSuspenseComponent;
            fiber.stateNode = suspenseInstance;
            return true;
          }
        }
        return false;
      }
    default:
      return false;
  }
}

function tryToClaimNextHydratableInstance(fiber) {
  if (!isHydrating) {
    return;
  }
  var nextInstance = nextHydratableInstance;
  if (!nextInstance) {
    // Nothing to hydrate. Make it an insertion.
    insertNonHydratedInstance(hydrationParentFiber, fiber);
    isHydrating = false;
    hydrationParentFiber = fiber;
    return;
  }
  var firstAttemptedInstance = nextInstance;
  if (!tryHydrate(fiber, nextInstance)) {
    // If we can't hydrate this instance let's try the next one.
    // We use this as a heuristic. It's based on intuition and not data so it
    // might be flawed or unnecessary.
    nextInstance = getNextHydratableSibling(firstAttemptedInstance);
    if (!nextInstance || !tryHydrate(fiber, nextInstance)) {
      // Nothing to hydrate. Make it an insertion.
      insertNonHydratedInstance(hydrationParentFiber, fiber);
      isHydrating = false;
      hydrationParentFiber = fiber;
      return;
    }
    // We matched the next one, we'll now assume that the first one was
    // superfluous and we'll delete it. Since we can't eagerly delete it
    // we'll have to schedule a deletion. To do that, this node needs a dummy
    // fiber associated with it.
    deleteHydratableInstance(hydrationParentFiber, firstAttemptedInstance);
  }
  hydrationParentFiber = fiber;
  nextHydratableInstance = getFirstHydratableChild(nextInstance);
}

function prepareToHydrateHostInstance(fiber, rootContainerInstance, hostContext) {
  if (!supportsHydration) {
    invariant(false, 'Expected prepareToHydrateHostInstance() to never be called. This error is likely caused by a bug in React. Please file an issue.');
  }

  var instance = fiber.stateNode;
  var updatePayload = hydrateInstance(instance, fiber.type, fiber.memoizedProps, rootContainerInstance, hostContext, fiber);
  // TODO: Type this specific to this type of component.
  fiber.updateQueue = updatePayload;
  // If the update payload indicates that there is a change or if there
  // is a new ref we mark this as an update.
  if (updatePayload !== null) {
    return true;
  }
  return false;
}

function prepareToHydrateHostTextInstance(fiber) {
  if (!supportsHydration) {
    invariant(false, 'Expected prepareToHydrateHostTextInstance() to never be called. This error is likely caused by a bug in React. Please file an issue.');
  }

  var textInstance = fiber.stateNode;
  var textContent = fiber.memoizedProps;
  var shouldUpdate = hydrateTextInstance(textInstance, textContent, fiber);
  {
    if (shouldUpdate) {
      // We assume that prepareToHydrateHostTextInstance is called in a context where the
      // hydration parent is the parent host component of this host text.
      var returnFiber = hydrationParentFiber;
      if (returnFiber !== null) {
        switch (returnFiber.tag) {
          case HostRoot:
            {
              var parentContainer = returnFiber.stateNode.containerInfo;
              didNotMatchHydratedContainerTextInstance(parentContainer, textInstance, textContent);
              break;
            }
          case HostComponent:
            {
              var parentType = returnFiber.type;
              var parentProps = returnFiber.memoizedProps;
              var parentInstance = returnFiber.stateNode;
              didNotMatchHydratedTextInstance(parentType, parentProps, parentInstance, textInstance, textContent);
              break;
            }
        }
      }
    }
  }
  return shouldUpdate;
}

function skipPastDehydratedSuspenseInstance(fiber) {
  if (!supportsHydration) {
    invariant(false, 'Expected skipPastDehydratedSuspenseInstance() to never be called. This error is likely caused by a bug in React. Please file an issue.');
  }
  var suspenseInstance = fiber.stateNode;
  !suspenseInstance ? invariant(false, 'Expected to have a hydrated suspense instance. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  nextHydratableInstance = getNextHydratableInstanceAfterSuspenseInstance(suspenseInstance);
}

function popToNextHostParent(fiber) {
  var parent = fiber.return;
  while (parent !== null && parent.tag !== HostComponent && parent.tag !== HostRoot && parent.tag !== DehydratedSuspenseComponent) {
    parent = parent.return;
  }
  hydrationParentFiber = parent;
}

function popHydrationState(fiber) {
  if (!supportsHydration) {
    return false;
  }
  if (fiber !== hydrationParentFiber) {
    // We're deeper than the current hydration context, inside an inserted
    // tree.
    return false;
  }
  if (!isHydrating) {
    // If we're not currently hydrating but we're in a hydration context, then
    // we were an insertion and now need to pop up reenter hydration of our
    // siblings.
    popToNextHostParent(fiber);
    isHydrating = true;
    return false;
  }

  var type = fiber.type;

  // If we have any remaining hydratable nodes, we need to delete them now.
  // We only do this deeper than head and body since they tend to have random
  // other nodes in them. We also ignore components with pure text content in
  // side of them.
  // TODO: Better heuristic.
  if (fiber.tag !== HostComponent || type !== 'head' && type !== 'body' && !shouldSetTextContent(type, fiber.memoizedProps)) {
    var nextInstance = nextHydratableInstance;
    while (nextInstance) {
      deleteHydratableInstance(fiber, nextInstance);
      nextInstance = getNextHydratableSibling(nextInstance);
    }
  }

  popToNextHostParent(fiber);
  nextHydratableInstance = hydrationParentFiber ? getNextHydratableSibling(fiber.stateNode) : null;
  return true;
}

function resetHydrationState() {
  if (!supportsHydration) {
    return;
  }

  hydrationParentFiber = null;
  nextHydratableInstance = null;
  isHydrating = false;
}

var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;

var didReceiveUpdate = false;

var didWarnAboutBadClass = void 0;
var didWarnAboutContextTypeOnFunctionComponent = void 0;
var didWarnAboutGetDerivedStateOnFunctionComponent = void 0;
var didWarnAboutFunctionRefs = void 0;
var didWarnAboutReassigningProps = void 0;

{
  didWarnAboutBadClass = {};
  didWarnAboutContextTypeOnFunctionComponent = {};
  didWarnAboutGetDerivedStateOnFunctionComponent = {};
  didWarnAboutFunctionRefs = {};
  didWarnAboutReassigningProps = false;
}

function reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime) {
  if (current$$1 === null) {
    // If this is a fresh new component that hasn't been rendered yet, we
    // won't update its child set by applying minimal side-effects. Instead,
    // we will add them all to the child before it gets rendered. That means
    // we can optimize this reconciliation pass by not tracking side-effects.
    workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
  } else {
    // If the current child is the same as the work in progress, it means that
    // we haven't yet started any work on these children. Therefore, we use
    // the clone algorithm to create a copy of all the current children.

    // If we had any progressed work already, that is invalid at this point so
    // let's throw it out.
    workInProgress.child = reconcileChildFibers(workInProgress, current$$1.child, nextChildren, renderExpirationTime);
  }
}

function forceUnmountCurrentAndReconcile(current$$1, workInProgress, nextChildren, renderExpirationTime) {
  // This function is fork of reconcileChildren. It's used in cases where we
  // want to reconcile without matching against the existing set. This has the
  // effect of all current children being unmounted; even if the type and key
  // are the same, the old child is unmounted and a new child is created.
  //
  // To do this, we're going to go through the reconcile algorithm twice. In
  // the first pass, we schedule a deletion for all the current children by
  // passing null.
  workInProgress.child = reconcileChildFibers(workInProgress, current$$1.child, null, renderExpirationTime);
  // In the second pass, we mount the new children. The trick here is that we
  // pass null in place of where we usually pass the current child set. This has
  // the effect of remounting all children regardless of whether their their
  // identity matches.
  workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
}

function updateForwardRef(current$$1, workInProgress, Component, nextProps, renderExpirationTime) {
  // TODO: current can be non-null here even if the component
  // hasn't yet mounted. This happens after the first render suspends.
  // We'll need to figure out if this is fine or can cause issues.

  {
    if (workInProgress.type !== workInProgress.elementType) {
      // Lazy component props can't be validated in createElement
      // because they're only guaranteed to be resolved here.
      var innerPropTypes = Component.propTypes;
      if (innerPropTypes) {
        checkPropTypes(innerPropTypes, nextProps, // Resolved props
        'prop', getComponentName(Component), getCurrentFiberStackInDev);
      }
    }
  }

  var render = Component.render;
  var ref = workInProgress.ref;

  // The rest is a fork of updateFunctionComponent
  var nextChildren = void 0;
  prepareToReadContext(workInProgress, renderExpirationTime);
  {
    ReactCurrentOwner$3.current = workInProgress;
    setCurrentPhase('render');
    nextChildren = renderWithHooks(current$$1, workInProgress, render, nextProps, ref, renderExpirationTime);
    if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
      // Only double-render components with Hooks
      if (workInProgress.memoizedState !== null) {
        nextChildren = renderWithHooks(current$$1, workInProgress, render, nextProps, ref, renderExpirationTime);
      }
    }
    setCurrentPhase(null);
  }

  if (current$$1 !== null && !didReceiveUpdate) {
    bailoutHooks(current$$1, workInProgress, renderExpirationTime);
    return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
  }

  // React DevTools reads this flag.
  workInProgress.effectTag |= PerformedWork;
  reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  return workInProgress.child;
}

function updateMemoComponent(current$$1, workInProgress, Component, nextProps, updateExpirationTime, renderExpirationTime) {
  if (current$$1 === null) {
    var type = Component.type;
    if (isSimpleFunctionComponent(type) && Component.compare === null &&
    // SimpleMemoComponent codepath doesn't resolve outer props either.
    Component.defaultProps === undefined) {
      // If this is a plain function component without default props,
      // and with only the default shallow comparison, we upgrade it
      // to a SimpleMemoComponent to allow fast path updates.
      workInProgress.tag = SimpleMemoComponent;
      workInProgress.type = type;
      {
        validateFunctionComponentInDev(workInProgress, type);
      }
      return updateSimpleMemoComponent(current$$1, workInProgress, type, nextProps, updateExpirationTime, renderExpirationTime);
    }
    {
      var innerPropTypes = type.propTypes;
      if (innerPropTypes) {
        // Inner memo component props aren't currently validated in createElement.
        // We could move it there, but we'd still need this for lazy code path.
        checkPropTypes(innerPropTypes, nextProps, // Resolved props
        'prop', getComponentName(type), getCurrentFiberStackInDev);
      }
    }
    var child = createFiberFromTypeAndProps(Component.type, null, nextProps, null, workInProgress.mode, renderExpirationTime);
    child.ref = workInProgress.ref;
    child.return = workInProgress;
    workInProgress.child = child;
    return child;
  }
  {
    var _type = Component.type;
    var _innerPropTypes = _type.propTypes;
    if (_innerPropTypes) {
      // Inner memo component props aren't currently validated in createElement.
      // We could move it there, but we'd still need this for lazy code path.
      checkPropTypes(_innerPropTypes, nextProps, // Resolved props
      'prop', getComponentName(_type), getCurrentFiberStackInDev);
    }
  }
  var currentChild = current$$1.child; // This is always exactly one child
  if (updateExpirationTime < renderExpirationTime) {
    // This will be the props with resolved defaultProps,
    // unlike current.memoizedProps which will be the unresolved ones.
    var prevProps = currentChild.memoizedProps;
    // Default to shallow comparison
    var compare = Component.compare;
    compare = compare !== null ? compare : shallowEqual;
    if (compare(prevProps, nextProps) && current$$1.ref === workInProgress.ref) {
      return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
    }
  }
  // React DevTools reads this flag.
  workInProgress.effectTag |= PerformedWork;
  var newChild = createWorkInProgress(currentChild, nextProps, renderExpirationTime);
  newChild.ref = workInProgress.ref;
  newChild.return = workInProgress;
  workInProgress.child = newChild;
  return newChild;
}

function updateSimpleMemoComponent(current$$1, workInProgress, Component, nextProps, updateExpirationTime, renderExpirationTime) {
  // TODO: current can be non-null here even if the component
  // hasn't yet mounted. This happens when the inner render suspends.
  // We'll need to figure out if this is fine or can cause issues.

  {
    if (workInProgress.type !== workInProgress.elementType) {
      // Lazy component props can't be validated in createElement
      // because they're only guaranteed to be resolved here.
      var outerMemoType = workInProgress.elementType;
      if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {
        // We warn when you define propTypes on lazy()
        // so let's just skip over it to find memo() outer wrapper.
        // Inner props for memo are validated later.
        outerMemoType = refineResolvedLazyComponent(outerMemoType);
      }
      var outerPropTypes = outerMemoType && outerMemoType.propTypes;
      if (outerPropTypes) {
        checkPropTypes(outerPropTypes, nextProps, // Resolved (SimpleMemoComponent has no defaultProps)
        'prop', getComponentName(outerMemoType), getCurrentFiberStackInDev);
      }
      // Inner propTypes will be validated in the function component path.
    }
  }
  if (current$$1 !== null) {
    var prevProps = current$$1.memoizedProps;
    if (shallowEqual(prevProps, nextProps) && current$$1.ref === workInProgress.ref) {
      didReceiveUpdate = false;
      if (updateExpirationTime < renderExpirationTime) {
        return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
      }
    }
  }
  return updateFunctionComponent(current$$1, workInProgress, Component, nextProps, renderExpirationTime);
}

function updateFragment(current$$1, workInProgress, renderExpirationTime) {
  var nextChildren = workInProgress.pendingProps;
  reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  return workInProgress.child;
}

function updateMode(current$$1, workInProgress, renderExpirationTime) {
  var nextChildren = workInProgress.pendingProps.children;
  reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  return workInProgress.child;
}

function updateProfiler(current$$1, workInProgress, renderExpirationTime) {
  if (enableProfilerTimer) {
    workInProgress.effectTag |= Update;
  }
  var nextProps = workInProgress.pendingProps;
  var nextChildren = nextProps.children;
  reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  return workInProgress.child;
}

function markRef(current$$1, workInProgress) {
  var ref = workInProgress.ref;
  if (current$$1 === null && ref !== null || current$$1 !== null && current$$1.ref !== ref) {
    // Schedule a Ref effect
    workInProgress.effectTag |= Ref;
  }
}

function updateFunctionComponent(current$$1, workInProgress, Component, nextProps, renderExpirationTime) {
  {
    if (workInProgress.type !== workInProgress.elementType) {
      // Lazy component props can't be validated in createElement
      // because they're only guaranteed to be resolved here.
      var innerPropTypes = Component.propTypes;
      if (innerPropTypes) {
        checkPropTypes(innerPropTypes, nextProps, // Resolved props
        'prop', getComponentName(Component), getCurrentFiberStackInDev);
      }
    }
  }

  var unmaskedContext = getUnmaskedContext(workInProgress, Component, true);
  var context = getMaskedContext(workInProgress, unmaskedContext);

  var nextChildren = void 0;
  prepareToReadContext(workInProgress, renderExpirationTime);
  {
    ReactCurrentOwner$3.current = workInProgress;
    setCurrentPhase('render');
    nextChildren = renderWithHooks(current$$1, workInProgress, Component, nextProps, context, renderExpirationTime);
    if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
      // Only double-render components with Hooks
      if (workInProgress.memoizedState !== null) {
        nextChildren = renderWithHooks(current$$1, workInProgress, Component, nextProps, context, renderExpirationTime);
      }
    }
    setCurrentPhase(null);
  }

  if (current$$1 !== null && !didReceiveUpdate) {
    bailoutHooks(current$$1, workInProgress, renderExpirationTime);
    return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
  }

  // React DevTools reads this flag.
  workInProgress.effectTag |= PerformedWork;
  reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  return workInProgress.child;
}

function updateClassComponent(current$$1, workInProgress, Component, nextProps, renderExpirationTime) {
  {
    if (workInProgress.type !== workInProgress.elementType) {
      // Lazy component props can't be validated in createElement
      // because they're only guaranteed to be resolved here.
      var innerPropTypes = Component.propTypes;
      if (innerPropTypes) {
        checkPropTypes(innerPropTypes, nextProps, // Resolved props
        'prop', getComponentName(Component), getCurrentFiberStackInDev);
      }
    }
  }

  // Push context providers early to prevent context stack mismatches.
  // During mounting we don't know the child context yet as the instance doesn't exist.
  // We will invalidate the child context in finishClassComponent() right after rendering.
  var hasContext = void 0;
  if (isContextProvider(Component)) {
    hasContext = true;
    pushContextProvider(workInProgress);
  } else {
    hasContext = false;
  }
  prepareToReadContext(workInProgress, renderExpirationTime);

  var instance = workInProgress.stateNode;
  var shouldUpdate = void 0;
  if (instance === null) {
    if (current$$1 !== null) {
      // An class component without an instance only mounts if it suspended
      // inside a non- concurrent tree, in an inconsistent state. We want to
      // tree it like a new mount, even though an empty version of it already
      // committed. Disconnect the alternate pointers.
      current$$1.alternate = null;
      workInProgress.alternate = null;
      // Since this is conceptually a new fiber, schedule a Placement effect
      workInProgress.effectTag |= Placement;
    }
    // In the initial pass we might need to construct the instance.
    constructClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
    mountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
    shouldUpdate = true;
  } else if (current$$1 === null) {
    // In a resume, we'll already have an instance we can reuse.
    shouldUpdate = resumeMountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
  } else {
    shouldUpdate = updateClassInstance(current$$1, workInProgress, Component, nextProps, renderExpirationTime);
  }
  var nextUnitOfWork = finishClassComponent(current$$1, workInProgress, Component, shouldUpdate, hasContext, renderExpirationTime);
  {
    var inst = workInProgress.stateNode;
    if (inst.props !== nextProps) {
      !didWarnAboutReassigningProps ? warning$1(false, 'It looks like %s is reassigning its own `this.props` while rendering. ' + 'This is not supported and can lead to confusing bugs.', getComponentName(workInProgress.type) || 'a component') : void 0;
      didWarnAboutReassigningProps = true;
    }
  }
  return nextUnitOfWork;
}

function finishClassComponent(current$$1, workInProgress, Component, shouldUpdate, hasContext, renderExpirationTime) {
  // Refs should update even if shouldComponentUpdate returns false
  markRef(current$$1, workInProgress);

  var didCaptureError = (workInProgress.effectTag & DidCapture) !== NoEffect;

  if (!shouldUpdate && !didCaptureError) {
    // Context providers should defer to sCU for rendering
    if (hasContext) {
      invalidateContextProvider(workInProgress, Component, false);
    }

    return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
  }

  var instance = workInProgress.stateNode;

  // Rerender
  ReactCurrentOwner$3.current = workInProgress;
  var nextChildren = void 0;
  if (didCaptureError && typeof Component.getDerivedStateFromError !== 'function') {
    // If we captured an error, but getDerivedStateFrom catch is not defined,
    // unmount all the children. componentDidCatch will schedule an update to
    // re-render a fallback. This is temporary until we migrate everyone to
    // the new API.
    // TODO: Warn in a future release.
    nextChildren = null;

    if (enableProfilerTimer) {
      stopProfilerTimerIfRunning(workInProgress);
    }
  } else {
    {
      setCurrentPhase('render');
      nextChildren = instance.render();
      if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
        instance.render();
      }
      setCurrentPhase(null);
    }
  }

  // React DevTools reads this flag.
  workInProgress.effectTag |= PerformedWork;
  if (current$$1 !== null && didCaptureError) {
    // If we're recovering from an error, reconcile without reusing any of
    // the existing children. Conceptually, the normal children and the children
    // that are shown on error are two different sets, so we shouldn't reuse
    // normal children even if their identities match.
    forceUnmountCurrentAndReconcile(current$$1, workInProgress, nextChildren, renderExpirationTime);
  } else {
    reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  }

  // Memoize state using the values we just used to render.
  // TODO: Restructure so we never read values from the instance.
  workInProgress.memoizedState = instance.state;

  // The context might have changed so we need to recalculate it.
  if (hasContext) {
    invalidateContextProvider(workInProgress, Component, true);
  }

  return workInProgress.child;
}

function pushHostRootContext(workInProgress) {
  var root = workInProgress.stateNode;
  if (root.pendingContext) {
    pushTopLevelContextObject(workInProgress, root.pendingContext, root.pendingContext !== root.context);
  } else if (root.context) {
    // Should always be set
    pushTopLevelContextObject(workInProgress, root.context, false);
  }
  pushHostContainer(workInProgress, root.containerInfo);
}

function updateHostRoot(current$$1, workInProgress, renderExpirationTime) {
  pushHostRootContext(workInProgress);
  var updateQueue = workInProgress.updateQueue;
  !(updateQueue !== null) ? invariant(false, 'If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  var nextProps = workInProgress.pendingProps;
  var prevState = workInProgress.memoizedState;
  var prevChildren = prevState !== null ? prevState.element : null;
  processUpdateQueue(workInProgress, updateQueue, nextProps, null, renderExpirationTime);
  var nextState = workInProgress.memoizedState;
  // Caution: React DevTools currently depends on this property
  // being called "element".
  var nextChildren = nextState.element;
  if (nextChildren === prevChildren) {
    // If the state is the same as before, that's a bailout because we had
    // no work that expires at this time.
    resetHydrationState();
    return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
  }
  var root = workInProgress.stateNode;
  if ((current$$1 === null || current$$1.child === null) && root.hydrate && enterHydrationState(workInProgress)) {
    // If we don't have any current children this might be the first pass.
    // We always try to hydrate. If this isn't a hydration pass there won't
    // be any children to hydrate which is effectively the same thing as
    // not hydrating.

    // This is a bit of a hack. We track the host root as a placement to
    // know that we're currently in a mounting state. That way isMounted
    // works as expected. We must reset this before committing.
    // TODO: Delete this when we delete isMounted and findDOMNode.
    workInProgress.effectTag |= Placement;

    // Ensure that children mount into this root without tracking
    // side-effects. This ensures that we don't store Placement effects on
    // nodes that will be hydrated.
    workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
  } else {
    // Otherwise reset hydration state in case we aborted and resumed another
    // root.
    reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
    resetHydrationState();
  }
  return workInProgress.child;
}

function updateHostComponent(current$$1, workInProgress, renderExpirationTime) {
  pushHostContext(workInProgress);

  if (current$$1 === null) {
    tryToClaimNextHydratableInstance(workInProgress);
  }

  var type = workInProgress.type;
  var nextProps = workInProgress.pendingProps;
  var prevProps = current$$1 !== null ? current$$1.memoizedProps : null;

  var nextChildren = nextProps.children;
  var isDirectTextChild = shouldSetTextContent(type, nextProps);

  if (isDirectTextChild) {
    // We special case a direct text child of a host node. This is a common
    // case. We won't handle it as a reified child. We will instead handle
    // this in the host environment that also have access to this prop. That
    // avoids allocating another HostText fiber and traversing it.
    nextChildren = null;
  } else if (prevProps !== null && shouldSetTextContent(type, prevProps)) {
    // If we're switching from a direct text child to a normal child, or to
    // empty, we need to schedule the text content to be reset.
    workInProgress.effectTag |= ContentReset;
  }

  markRef(current$$1, workInProgress);

  // Check the host config to see if the children are offscreen/hidden.
  if (renderExpirationTime !== Never && workInProgress.mode & ConcurrentMode && shouldDeprioritizeSubtree(type, nextProps)) {
    // Schedule this fiber to re-render at offscreen priority. Then bailout.
    workInProgress.expirationTime = workInProgress.childExpirationTime = Never;
    return null;
  }

  reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  return workInProgress.child;
}

function updateHostText(current$$1, workInProgress) {
  if (current$$1 === null) {
    tryToClaimNextHydratableInstance(workInProgress);
  }
  // Nothing to do here. This is terminal. We'll do the completion step
  // immediately after.
  return null;
}

function mountLazyComponent(_current, workInProgress, elementType, updateExpirationTime, renderExpirationTime) {
  if (_current !== null) {
    // An lazy component only mounts if it suspended inside a non-
    // concurrent tree, in an inconsistent state. We want to treat it like
    // a new mount, even though an empty version of it already committed.
    // Disconnect the alternate pointers.
    _current.alternate = null;
    workInProgress.alternate = null;
    // Since this is conceptually a new fiber, schedule a Placement effect
    workInProgress.effectTag |= Placement;
  }

  var props = workInProgress.pendingProps;
  // We can't start a User Timing measurement with correct label yet.
  // Cancel and resume right after we know the tag.
  cancelWorkTimer(workInProgress);
  var Component = readLazyComponentType(elementType);
  // Store the unwrapped component in the type.
  workInProgress.type = Component;
  var resolvedTag = workInProgress.tag = resolveLazyComponentTag(Component);
  startWorkTimer(workInProgress);
  var resolvedProps = resolveDefaultProps(Component, props);
  var child = void 0;
  switch (resolvedTag) {
    case FunctionComponent:
      {
        {
          validateFunctionComponentInDev(workInProgress, Component);
        }
        child = updateFunctionComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
        break;
      }
    case ClassComponent:
      {
        child = updateClassComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
        break;
      }
    case ForwardRef:
      {
        child = updateForwardRef(null, workInProgress, Component, resolvedProps, renderExpirationTime);
        break;
      }
    case MemoComponent:
      {
        {
          if (workInProgress.type !== workInProgress.elementType) {
            var outerPropTypes = Component.propTypes;
            if (outerPropTypes) {
              checkPropTypes(outerPropTypes, resolvedProps, // Resolved for outer only
              'prop', getComponentName(Component), getCurrentFiberStackInDev);
            }
          }
        }
        child = updateMemoComponent(null, workInProgress, Component, resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too
        updateExpirationTime, renderExpirationTime);
        break;
      }
    default:
      {
        var hint = '';
        {
          if (Component !== null && typeof Component === 'object' && Component.$$typeof === REACT_LAZY_TYPE) {
            hint = ' Did you wrap a component in React.lazy() more than once?';
          }
        }
        // This message intentionally doesn't mention ForwardRef or MemoComponent
        // because the fact that it's a separate type of work is an
        // implementation detail.
        invariant(false, 'Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s', Component, hint);
      }
  }
  return child;
}

function mountIncompleteClassComponent(_current, workInProgress, Component, nextProps, renderExpirationTime) {
  if (_current !== null) {
    // An incomplete component only mounts if it suspended inside a non-
    // concurrent tree, in an inconsistent state. We want to treat it like
    // a new mount, even though an empty version of it already committed.
    // Disconnect the alternate pointers.
    _current.alternate = null;
    workInProgress.alternate = null;
    // Since this is conceptually a new fiber, schedule a Placement effect
    workInProgress.effectTag |= Placement;
  }

  // Promote the fiber to a class and try rendering again.
  workInProgress.tag = ClassComponent;

  // The rest of this function is a fork of `updateClassComponent`

  // Push context providers early to prevent context stack mismatches.
  // During mounting we don't know the child context yet as the instance doesn't exist.
  // We will invalidate the child context in finishClassComponent() right after rendering.
  var hasContext = void 0;
  if (isContextProvider(Component)) {
    hasContext = true;
    pushContextProvider(workInProgress);
  } else {
    hasContext = false;
  }
  prepareToReadContext(workInProgress, renderExpirationTime);

  constructClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
  mountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);

  return finishClassComponent(null, workInProgress, Component, true, hasContext, renderExpirationTime);
}

function mountIndeterminateComponent(_current, workInProgress, Component, renderExpirationTime) {
  if (_current !== null) {
    // An indeterminate component only mounts if it suspended inside a non-
    // concurrent tree, in an inconsistent state. We want to treat it like
    // a new mount, even though an empty version of it already committed.
    // Disconnect the alternate pointers.
    _current.alternate = null;
    workInProgress.alternate = null;
    // Since this is conceptually a new fiber, schedule a Placement effect
    workInProgress.effectTag |= Placement;
  }

  var props = workInProgress.pendingProps;
  var unmaskedContext = getUnmaskedContext(workInProgress, Component, false);
  var context = getMaskedContext(workInProgress, unmaskedContext);

  prepareToReadContext(workInProgress, renderExpirationTime);

  var value = void 0;

  {
    if (Component.prototype && typeof Component.prototype.render === 'function') {
      var componentName = getComponentName(Component) || 'Unknown';

      if (!didWarnAboutBadClass[componentName]) {
        warningWithoutStack$1(false, "The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', componentName, componentName);
        didWarnAboutBadClass[componentName] = true;
      }
    }

    if (workInProgress.mode & StrictMode) {
      ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null);
    }

    ReactCurrentOwner$3.current = workInProgress;
    value = renderWithHooks(null, workInProgress, Component, props, context, renderExpirationTime);
  }
  // React DevTools reads this flag.
  workInProgress.effectTag |= PerformedWork;

  if (typeof value === 'object' && value !== null && typeof value.render === 'function' && value.$$typeof === undefined) {
    // Proceed under the assumption that this is a class instance
    workInProgress.tag = ClassComponent;

    // Throw out any hooks that were used.
    resetHooks();

    // Push context providers early to prevent context stack mismatches.
    // During mounting we don't know the child context yet as the instance doesn't exist.
    // We will invalidate the child context in finishClassComponent() right after rendering.
    var hasContext = false;
    if (isContextProvider(Component)) {
      hasContext = true;
      pushContextProvider(workInProgress);
    } else {
      hasContext = false;
    }

    workInProgress.memoizedState = value.state !== null && value.state !== undefined ? value.state : null;

    var getDerivedStateFromProps = Component.getDerivedStateFromProps;
    if (typeof getDerivedStateFromProps === 'function') {
      applyDerivedStateFromProps(workInProgress, Component, getDerivedStateFromProps, props);
    }

    adoptClassInstance(workInProgress, value);
    mountClassInstance(workInProgress, Component, props, renderExpirationTime);
    return finishClassComponent(null, workInProgress, Component, true, hasContext, renderExpirationTime);
  } else {
    // Proceed under the assumption that this is a function component
    workInProgress.tag = FunctionComponent;
    {
      if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
        // Only double-render components with Hooks
        if (workInProgress.memoizedState !== null) {
          value = renderWithHooks(null, workInProgress, Component, props, context, renderExpirationTime);
        }
      }
    }
    reconcileChildren(null, workInProgress, value, renderExpirationTime);
    {
      validateFunctionComponentInDev(workInProgress, Component);
    }
    return workInProgress.child;
  }
}

function validateFunctionComponentInDev(workInProgress, Component) {
  if (Component) {
    !!Component.childContextTypes ? warningWithoutStack$1(false, '%s(...): childContextTypes cannot be defined on a function component.', Component.displayName || Component.name || 'Component') : void 0;
  }
  if (workInProgress.ref !== null) {
    var info = '';
    var ownerName = getCurrentFiberOwnerNameInDevOrNull();
    if (ownerName) {
      info += '\n\nCheck the render method of `' + ownerName + '`.';
    }

    var warningKey = ownerName || workInProgress._debugID || '';
    var debugSource = workInProgress._debugSource;
    if (debugSource) {
      warningKey = debugSource.fileName + ':' + debugSource.lineNumber;
    }
    if (!didWarnAboutFunctionRefs[warningKey]) {
      didWarnAboutFunctionRefs[warningKey] = true;
      warning$1(false, 'Function components cannot be given refs. ' + 'Attempts to access this ref will fail. ' + 'Did you mean to use React.forwardRef()?%s', info);
    }
  }

  if (typeof Component.getDerivedStateFromProps === 'function') {
    var componentName = getComponentName(Component) || 'Unknown';

    if (!didWarnAboutGetDerivedStateOnFunctionComponent[componentName]) {
      warningWithoutStack$1(false, '%s: Function components do not support getDerivedStateFromProps.', componentName);
      didWarnAboutGetDerivedStateOnFunctionComponent[componentName] = true;
    }
  }

  if (typeof Component.contextType === 'object' && Component.contextType !== null) {
    var _componentName = getComponentName(Component) || 'Unknown';

    if (!didWarnAboutContextTypeOnFunctionComponent[_componentName]) {
      warningWithoutStack$1(false, '%s: Function components do not support contextType.', _componentName);
      didWarnAboutContextTypeOnFunctionComponent[_componentName] = true;
    }
  }
}

function updateSuspenseComponent(current$$1, workInProgress, renderExpirationTime) {
  var mode = workInProgress.mode;
  var nextProps = workInProgress.pendingProps;

  // We should attempt to render the primary children unless this boundary
  // already suspended during this render (`alreadyCaptured` is true).
  var nextState = workInProgress.memoizedState;

  var nextDidTimeout = void 0;
  if ((workInProgress.effectTag & DidCapture) === NoEffect) {
    // This is the first attempt.
    nextState = null;
    nextDidTimeout = false;
  } else {
    // Something in this boundary's subtree already suspended. Switch to
    // rendering the fallback children.
    nextState = {
      timedOutAt: nextState !== null ? nextState.timedOutAt : NoWork
    };
    nextDidTimeout = true;
    workInProgress.effectTag &= ~DidCapture;
  }

  // This next part is a bit confusing. If the children timeout, we switch to
  // showing the fallback children in place of the "primary" children.
  // However, we don't want to delete the primary children because then their
  // state will be lost (both the React state and the host state, e.g.
  // uncontrolled form inputs). Instead we keep them mounted and hide them.
  // Both the fallback children AND the primary children are rendered at the
  // same time. Once the primary children are un-suspended, we can delete
  // the fallback children — don't need to preserve their state.
  //
  // The two sets of children are siblings in the host environment, but
  // semantically, for purposes of reconciliation, they are two separate sets.
  // So we store them using two fragment fibers.
  //
  // However, we want to avoid allocating extra fibers for every placeholder.
  // They're only necessary when the children time out, because that's the
  // only time when both sets are mounted.
  //
  // So, the extra fragment fibers are only used if the children time out.
  // Otherwise, we render the primary children directly. This requires some
  // custom reconciliation logic to preserve the state of the primary
  // children. It's essentially a very basic form of re-parenting.

  // `child` points to the child fiber. In the normal case, this is the first
  // fiber of the primary children set. In the timed-out case, it's a
  // a fragment fiber containing the primary children.
  var child = void 0;
  // `next` points to the next fiber React should render. In the normal case,
  // it's the same as `child`: the first fiber of the primary children set.
  // In the timed-out case, it's a fragment fiber containing the *fallback*
  // children -- we skip over the primary children entirely.
  var next = void 0;
  if (current$$1 === null) {
    if (enableSuspenseServerRenderer) {
      // If we're currently hydrating, try to hydrate this boundary.
      // But only if this has a fallback.
      if (nextProps.fallback !== undefined) {
        tryToClaimNextHydratableInstance(workInProgress);
        // This could've changed the tag if this was a dehydrated suspense component.
        if (workInProgress.tag === DehydratedSuspenseComponent) {
          return updateDehydratedSuspenseComponent(null, workInProgress, renderExpirationTime);
        }
      }
    }

    // This is the initial mount. This branch is pretty simple because there's
    // no previous state that needs to be preserved.
    if (nextDidTimeout) {
      // Mount separate fragments for primary and fallback children.
      var nextFallbackChildren = nextProps.fallback;
      var primaryChildFragment = createFiberFromFragment(null, mode, NoWork, null);

      if ((workInProgress.mode & ConcurrentMode) === NoContext) {
        // Outside of concurrent mode, we commit the effects from the
        var progressedState = workInProgress.memoizedState;
        var progressedPrimaryChild = progressedState !== null ? workInProgress.child.child : workInProgress.child;
        primaryChildFragment.child = progressedPrimaryChild;
      }

      var fallbackChildFragment = createFiberFromFragment(nextFallbackChildren, mode, renderExpirationTime, null);
      primaryChildFragment.sibling = fallbackChildFragment;
      child = primaryChildFragment;
      // Skip the primary children, and continue working on the
      // fallback children.
      next = fallbackChildFragment;
      child.return = next.return = workInProgress;
    } else {
      // Mount the primary children without an intermediate fragment fiber.
      var nextPrimaryChildren = nextProps.children;
      child = next = mountChildFibers(workInProgress, null, nextPrimaryChildren, renderExpirationTime);
    }
  } else {
    // This is an update. This branch is more complicated because we need to
    // ensure the state of the primary children is preserved.
    var prevState = current$$1.memoizedState;
    var prevDidTimeout = prevState !== null;
    if (prevDidTimeout) {
      // The current tree already timed out. That means each child set is
      var currentPrimaryChildFragment = current$$1.child;
      var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;
      if (nextDidTimeout) {
        // Still timed out. Reuse the current primary children by cloning
        // its fragment. We're going to skip over these entirely.
        var _nextFallbackChildren = nextProps.fallback;
        var _primaryChildFragment = createWorkInProgress(currentPrimaryChildFragment, currentPrimaryChildFragment.pendingProps, NoWork);

        if ((workInProgress.mode & ConcurrentMode) === NoContext) {
          // Outside of concurrent mode, we commit the effects from the
          var _progressedState = workInProgress.memoizedState;
          var _progressedPrimaryChild = _progressedState !== null ? workInProgress.child.child : workInProgress.child;
          if (_progressedPrimaryChild !== currentPrimaryChildFragment.child) {
            _primaryChildFragment.child = _progressedPrimaryChild;
          }
        }

        // Because primaryChildFragment is a new fiber that we're inserting as the
        // parent of a new tree, we need to set its treeBaseDuration.
        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
          // treeBaseDuration is the sum of all the child tree base durations.
          var treeBaseDuration = 0;
          var hiddenChild = _primaryChildFragment.child;
          while (hiddenChild !== null) {
            treeBaseDuration += hiddenChild.treeBaseDuration;
            hiddenChild = hiddenChild.sibling;
          }
          _primaryChildFragment.treeBaseDuration = treeBaseDuration;
        }

        // Clone the fallback child fragment, too. These we'll continue
        // working on.
        var _fallbackChildFragment = _primaryChildFragment.sibling = createWorkInProgress(currentFallbackChildFragment, _nextFallbackChildren, currentFallbackChildFragment.expirationTime);
        child = _primaryChildFragment;
        _primaryChildFragment.childExpirationTime = NoWork;
        // Skip the primary children, and continue working on the
        // fallback children.
        next = _fallbackChildFragment;
        child.return = next.return = workInProgress;
      } else {
        // No longer suspended. Switch back to showing the primary children,
        // and remove the intermediate fragment fiber.
        var _nextPrimaryChildren = nextProps.children;
        var currentPrimaryChild = currentPrimaryChildFragment.child;
        var primaryChild = reconcileChildFibers(workInProgress, currentPrimaryChild, _nextPrimaryChildren, renderExpirationTime);

        // If this render doesn't suspend, we need to delete the fallback
        // children. Wait until the complete phase, after we've confirmed the
        // fallback is no longer needed.
        // TODO: Would it be better to store the fallback fragment on
        // the stateNode?

        // Continue rendering the children, like we normally do.
        child = next = primaryChild;
      }
    } else {
      // The current tree has not already timed out. That means the primary
      // children are not wrapped in a fragment fiber.
      var _currentPrimaryChild = current$$1.child;
      if (nextDidTimeout) {
        // Timed out. Wrap the children in a fragment fiber to keep them
        // separate from the fallback children.
        var _nextFallbackChildren2 = nextProps.fallback;
        var _primaryChildFragment2 = createFiberFromFragment(
        // It shouldn't matter what the pending props are because we aren't
        // going to render this fragment.
        null, mode, NoWork, null);
        _primaryChildFragment2.child = _currentPrimaryChild;

        // Even though we're creating a new fiber, there are no new children,
        // because we're reusing an already mounted tree. So we don't need to
        // schedule a placement.
        // primaryChildFragment.effectTag |= Placement;

        if ((workInProgress.mode & ConcurrentMode) === NoContext) {
          // Outside of concurrent mode, we commit the effects from the
          var _progressedState2 = workInProgress.memoizedState;
          var _progressedPrimaryChild2 = _progressedState2 !== null ? workInProgress.child.child : workInProgress.child;
          _primaryChildFragment2.child = _progressedPrimaryChild2;
        }

        // Because primaryChildFragment is a new fiber that we're inserting as the
        // parent of a new tree, we need to set its treeBaseDuration.
        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
          // treeBaseDuration is the sum of all the child tree base durations.
          var _treeBaseDuration = 0;
          var _hiddenChild = _primaryChildFragment2.child;
          while (_hiddenChild !== null) {
            _treeBaseDuration += _hiddenChild.treeBaseDuration;
            _hiddenChild = _hiddenChild.sibling;
          }
          _primaryChildFragment2.treeBaseDuration = _treeBaseDuration;
        }

        // Create a fragment from the fallback children, too.
        var _fallbackChildFragment2 = _primaryChildFragment2.sibling = createFiberFromFragment(_nextFallbackChildren2, mode, renderExpirationTime, null);
        _fallbackChildFragment2.effectTag |= Placement;
        child = _primaryChildFragment2;
        _primaryChildFragment2.childExpirationTime = NoWork;
        // Skip the primary children, and continue working on the
        // fallback children.
        next = _fallbackChildFragment2;
        child.return = next.return = workInProgress;
      } else {
        // Still haven't timed out.  Continue rendering the children, like we
        // normally do.
        var _nextPrimaryChildren2 = nextProps.children;
        next = child = reconcileChildFibers(workInProgress, _currentPrimaryChild, _nextPrimaryChildren2, renderExpirationTime);
      }
    }
    workInProgress.stateNode = current$$1.stateNode;
  }

  workInProgress.memoizedState = nextState;
  workInProgress.child = child;
  return next;
}

function updateDehydratedSuspenseComponent(current$$1, workInProgress, renderExpirationTime) {
  if (current$$1 === null) {
    // During the first pass, we'll bail out and not drill into the children.
    // Instead, we'll leave the content in place and try to hydrate it later.
    workInProgress.expirationTime = Never;
    return null;
  }
  // We use childExpirationTime to indicate that a child might depend on context, so if
  // any context has changed, we need to treat is as if the input might have changed.
  var hasContextChanged$$1 = current$$1.childExpirationTime >= renderExpirationTime;
  if (didReceiveUpdate || hasContextChanged$$1) {
    // This boundary has changed since the first render. This means that we are now unable to
    // hydrate it. We might still be able to hydrate it using an earlier expiration time but
    // during this render we can't. Instead, we're going to delete the whole subtree and
    // instead inject a new real Suspense boundary to take its place, which may render content
    // or fallback. The real Suspense boundary will suspend for a while so we have some time
    // to ensure it can produce real content, but all state and pending events will be lost.

    // Detach from the current dehydrated boundary.
    current$$1.alternate = null;
    workInProgress.alternate = null;

    // Insert a deletion in the effect list.
    var returnFiber = workInProgress.return;
    !(returnFiber !== null) ? invariant(false, 'Suspense boundaries are never on the root. This is probably a bug in React.') : void 0;
    var last = returnFiber.lastEffect;
    if (last !== null) {
      last.nextEffect = current$$1;
      returnFiber.lastEffect = current$$1;
    } else {
      returnFiber.firstEffect = returnFiber.lastEffect = current$$1;
    }
    current$$1.nextEffect = null;
    current$$1.effectTag = Deletion;

    // Upgrade this work in progress to a real Suspense component.
    workInProgress.tag = SuspenseComponent;
    workInProgress.stateNode = null;
    workInProgress.memoizedState = null;
    // This is now an insertion.
    workInProgress.effectTag |= Placement;
    // Retry as a real Suspense component.
    return updateSuspenseComponent(null, workInProgress, renderExpirationTime);
  }
  if ((workInProgress.effectTag & DidCapture) === NoEffect) {
    // This is the first attempt.
    reenterHydrationStateFromDehydratedSuspenseInstance(workInProgress);
    var nextProps = workInProgress.pendingProps;
    var nextChildren = nextProps.children;
    workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
    return workInProgress.child;
  } else {
    // Something suspended. Leave the existing children in place.
    // TODO: In non-concurrent mode, should we commit the nodes we have hydrated so far?
    workInProgress.child = null;
    return null;
  }
}

function updatePortalComponent(current$$1, workInProgress, renderExpirationTime) {
  pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);
  var nextChildren = workInProgress.pendingProps;
  if (current$$1 === null) {
    // Portals are special because we don't append the children during mount
    // but at commit. Therefore we need to track insertions which the normal
    // flow doesn't do during mount. This doesn't happen at the root because
    // the root always starts with a "current" with a null child.
    // TODO: Consider unifying this with how the root works.
    workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
  } else {
    reconcileChildren(current$$1, workInProgress, nextChildren, renderExpirationTime);
  }
  return workInProgress.child;
}

function updateContextProvider(current$$1, workInProgress, renderExpirationTime) {
  var providerType = workInProgress.type;
  var context = providerType._context;

  var newProps = workInProgress.pendingProps;
  var oldProps = workInProgress.memoizedProps;

  var newValue = newProps.value;

  {
    var providerPropTypes = workInProgress.type.propTypes;

    if (providerPropTypes) {
      checkPropTypes(providerPropTypes, newProps, 'prop', 'Context.Provider', getCurrentFiberStackInDev);
    }
  }

  pushProvider(workInProgress, newValue);

  if (oldProps !== null) {
    var oldValue = oldProps.value;
    var changedBits = calculateChangedBits(context, newValue, oldValue);
    if (changedBits === 0) {
      // No change. Bailout early if children are the same.
      if (oldProps.children === newProps.children && !hasContextChanged()) {
        return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
      }
    } else {
      // The context value changed. Search for matching consumers and schedule
      // them to update.
      propagateContextChange(workInProgress, context, changedBits, renderExpirationTime);
    }
  }

  var newChildren = newProps.children;
  reconcileChildren(current$$1, workInProgress, newChildren, renderExpirationTime);
  return workInProgress.child;
}

var hasWarnedAboutUsingContextAsConsumer = false;

function updateContextConsumer(current$$1, workInProgress, renderExpirationTime) {
  var context = workInProgress.type;
  // The logic below for Context differs depending on PROD or DEV mode. In
  // DEV mode, we create a separate object for Context.Consumer that acts
  // like a proxy to Context. This proxy object adds unnecessary code in PROD
  // so we use the old behaviour (Context.Consumer references Context) to
  // reduce size and overhead. The separate object references context via
  // a property called "_context", which also gives us the ability to check
  // in DEV mode if this property exists or not and warn if it does not.
  {
    if (context._context === undefined) {
      // This may be because it's a Context (rather than a Consumer).
      // Or it may be because it's older React where they're the same thing.
      // We only want to warn if we're sure it's a new React.
      if (context !== context.Consumer) {
        if (!hasWarnedAboutUsingContextAsConsumer) {
          hasWarnedAboutUsingContextAsConsumer = true;
          warning$1(false, 'Rendering <Context> directly is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
        }
      }
    } else {
      context = context._context;
    }
  }
  var newProps = workInProgress.pendingProps;
  var render = newProps.children;

  {
    !(typeof render === 'function') ? warningWithoutStack$1(false, 'A context consumer was rendered with multiple children, or a child ' + "that isn't a function. A context consumer expects a single child " + 'that is a function. If you did pass a function, make sure there ' + 'is no trailing or leading whitespace around it.') : void 0;
  }

  prepareToReadContext(workInProgress, renderExpirationTime);
  var newValue = readContext(context, newProps.unstable_observedBits);
  var newChildren = void 0;
  {
    ReactCurrentOwner$3.current = workInProgress;
    setCurrentPhase('render');
    newChildren = render(newValue);
    setCurrentPhase(null);
  }

  // React DevTools reads this flag.
  workInProgress.effectTag |= PerformedWork;
  reconcileChildren(current$$1, workInProgress, newChildren, renderExpirationTime);
  return workInProgress.child;
}

function markWorkInProgressReceivedUpdate() {
  didReceiveUpdate = true;
}

function bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime) {
  cancelWorkTimer(workInProgress);

  if (current$$1 !== null) {
    // Reuse previous context list
    workInProgress.contextDependencies = current$$1.contextDependencies;
  }

  if (enableProfilerTimer) {
    // Don't update "base" render times for bailouts.
    stopProfilerTimerIfRunning(workInProgress);
  }

  // Check if the children have any pending work.
  var childExpirationTime = workInProgress.childExpirationTime;
  if (childExpirationTime < renderExpirationTime) {
    // The children don't have any work either. We can skip them.
    // TODO: Once we add back resuming, we should check if the children are
    // a work-in-progress set. If so, we need to transfer their effects.
    return null;
  } else {
    // This fiber doesn't have work, but its subtree does. Clone the child
    // fibers and continue.
    cloneChildFibers(current$$1, workInProgress);
    return workInProgress.child;
  }
}

function beginWork(current$$1, workInProgress, renderExpirationTime) {
  var updateExpirationTime = workInProgress.expirationTime;

  if (current$$1 !== null) {
    var oldProps = current$$1.memoizedProps;
    var newProps = workInProgress.pendingProps;

    if (oldProps !== newProps || hasContextChanged()) {
      // If props or context changed, mark the fiber as having performed work.
      // This may be unset if the props are determined to be equal later (memo).
      didReceiveUpdate = true;
    } else if (updateExpirationTime < renderExpirationTime) {
      didReceiveUpdate = false;
      // This fiber does not have any pending work. Bailout without entering
      // the begin phase. There's still some bookkeeping we that needs to be done
      // in this optimized path, mostly pushing stuff onto the stack.
      switch (workInProgress.tag) {
        case HostRoot:
          pushHostRootContext(workInProgress);
          resetHydrationState();
          break;
        case HostComponent:
          pushHostContext(workInProgress);
          break;
        case ClassComponent:
          {
            var Component = workInProgress.type;
            if (isContextProvider(Component)) {
              pushContextProvider(workInProgress);
            }
            break;
          }
        case HostPortal:
          pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);
          break;
        case ContextProvider:
          {
            var newValue = workInProgress.memoizedProps.value;
            pushProvider(workInProgress, newValue);
            break;
          }
        case Profiler:
          if (enableProfilerTimer) {
            workInProgress.effectTag |= Update;
          }
          break;
        case SuspenseComponent:
          {
            var state = workInProgress.memoizedState;
            var didTimeout = state !== null;
            if (didTimeout) {
              // If this boundary is currently timed out, we need to decide
              // whether to retry the primary children, or to skip over it and
              // go straight to the fallback. Check the priority of the primary
              var primaryChildFragment = workInProgress.child;
              var primaryChildExpirationTime = primaryChildFragment.childExpirationTime;
              if (primaryChildExpirationTime !== NoWork && primaryChildExpirationTime >= renderExpirationTime) {
                // The primary children have pending work. Use the normal path
                // to attempt to render the primary children again.
                return updateSuspenseComponent(current$$1, workInProgress, renderExpirationTime);
              } else {
                // The primary children do not have pending work with sufficient
                // priority. Bailout.
                var child = bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
                if (child !== null) {
                  // The fallback children have pending work. Skip over the
                  // primary children and work on the fallback.
                  return child.sibling;
                } else {
                  return null;
                }
              }
            }
            break;
          }
        case DehydratedSuspenseComponent:
          {
            if (enableSuspenseServerRenderer) {
              // We know that this component will suspend again because if it has
              // been unsuspended it has committed as a regular Suspense component.
              // If it needs to be retried, it should have work scheduled on it.
              workInProgress.effectTag |= DidCapture;
              break;
            }
          }
      }
      return bailoutOnAlreadyFinishedWork(current$$1, workInProgress, renderExpirationTime);
    }
  } else {
    didReceiveUpdate = false;
  }

  // Before entering the begin phase, clear the expiration time.
  workInProgress.expirationTime = NoWork;

  switch (workInProgress.tag) {
    case IndeterminateComponent:
      {
        var elementType = workInProgress.elementType;
        return mountIndeterminateComponent(current$$1, workInProgress, elementType, renderExpirationTime);
      }
    case LazyComponent:
      {
        var _elementType = workInProgress.elementType;
        return mountLazyComponent(current$$1, workInProgress, _elementType, updateExpirationTime, renderExpirationTime);
      }
    case FunctionComponent:
      {
        var _Component = workInProgress.type;
        var unresolvedProps = workInProgress.pendingProps;
        var resolvedProps = workInProgress.elementType === _Component ? unresolvedProps : resolveDefaultProps(_Component, unresolvedProps);
        return updateFunctionComponent(current$$1, workInProgress, _Component, resolvedProps, renderExpirationTime);
      }
    case ClassComponent:
      {
        var _Component2 = workInProgress.type;
        var _unresolvedProps = workInProgress.pendingProps;
        var _resolvedProps = workInProgress.elementType === _Component2 ? _unresolvedProps : resolveDefaultProps(_Component2, _unresolvedProps);
        return updateClassComponent(current$$1, workInProgress, _Component2, _resolvedProps, renderExpirationTime);
      }
    case HostRoot:
      return updateHostRoot(current$$1, workInProgress, renderExpirationTime);
    case HostComponent:
      return updateHostComponent(current$$1, workInProgress, renderExpirationTime);
    case HostText:
      return updateHostText(current$$1, workInProgress);
    case SuspenseComponent:
      return updateSuspenseComponent(current$$1, workInProgress, renderExpirationTime);
    case HostPortal:
      return updatePortalComponent(current$$1, workInProgress, renderExpirationTime);
    case ForwardRef:
      {
        var type = workInProgress.type;
        var _unresolvedProps2 = workInProgress.pendingProps;
        var _resolvedProps2 = workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultProps(type, _unresolvedProps2);
        return updateForwardRef(current$$1, workInProgress, type, _resolvedProps2, renderExpirationTime);
      }
    case Fragment:
      return updateFragment(current$$1, workInProgress, renderExpirationTime);
    case Mode:
      return updateMode(current$$1, workInProgress, renderExpirationTime);
    case Profiler:
      return updateProfiler(current$$1, workInProgress, renderExpirationTime);
    case ContextProvider:
      return updateContextProvider(current$$1, workInProgress, renderExpirationTime);
    case ContextConsumer:
      return updateContextConsumer(current$$1, workInProgress, renderExpirationTime);
    case MemoComponent:
      {
        var _type2 = workInProgress.type;
        var _unresolvedProps3 = workInProgress.pendingProps;
        // Resolve outer props first, then resolve inner props.
        var _resolvedProps3 = resolveDefaultProps(_type2, _unresolvedProps3);
        {
          if (workInProgress.type !== workInProgress.elementType) {
            var outerPropTypes = _type2.propTypes;
            if (outerPropTypes) {
              checkPropTypes(outerPropTypes, _resolvedProps3, // Resolved for outer only
              'prop', getComponentName(_type2), getCurrentFiberStackInDev);
            }
          }
        }
        _resolvedProps3 = resolveDefaultProps(_type2.type, _resolvedProps3);
        return updateMemoComponent(current$$1, workInProgress, _type2, _resolvedProps3, updateExpirationTime, renderExpirationTime);
      }
    case SimpleMemoComponent:
      {
        return updateSimpleMemoComponent(current$$1, workInProgress, workInProgress.type, workInProgress.pendingProps, updateExpirationTime, renderExpirationTime);
      }
    case IncompleteClassComponent:
      {
        var _Component3 = workInProgress.type;
        var _unresolvedProps4 = workInProgress.pendingProps;
        var _resolvedProps4 = workInProgress.elementType === _Component3 ? _unresolvedProps4 : resolveDefaultProps(_Component3, _unresolvedProps4);
        return mountIncompleteClassComponent(current$$1, workInProgress, _Component3, _resolvedProps4, renderExpirationTime);
      }
    case DehydratedSuspenseComponent:
      {
        if (enableSuspenseServerRenderer) {
          return updateDehydratedSuspenseComponent(current$$1, workInProgress, renderExpirationTime);
        }
        break;
      }
  }
  invariant(false, 'Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue.');
}

var valueCursor = createCursor(null);

var rendererSigil = void 0;
{
  // Use this to detect multiple renderers using the same context
  rendererSigil = {};
}

var currentlyRenderingFiber = null;
var lastContextDependency = null;
var lastContextWithAllBitsObserved = null;

var isDisallowedContextReadInDEV = false;

function resetContextDependences() {
  // This is called right before React yields execution, to ensure `readContext`
  // cannot be called outside the render phase.
  currentlyRenderingFiber = null;
  lastContextDependency = null;
  lastContextWithAllBitsObserved = null;
  {
    isDisallowedContextReadInDEV = false;
  }
}

function enterDisallowedContextReadInDEV() {
  {
    isDisallowedContextReadInDEV = true;
  }
}

function exitDisallowedContextReadInDEV() {
  {
    isDisallowedContextReadInDEV = false;
  }
}

function pushProvider(providerFiber, nextValue) {
  var context = providerFiber.type._context;

  if (isPrimaryRenderer) {
    push(valueCursor, context._currentValue, providerFiber);

    context._currentValue = nextValue;
    {
      !(context._currentRenderer === undefined || context._currentRenderer === null || context._currentRenderer === rendererSigil) ? warningWithoutStack$1(false, 'Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.') : void 0;
      context._currentRenderer = rendererSigil;
    }
  } else {
    push(valueCursor, context._currentValue2, providerFiber);

    context._currentValue2 = nextValue;
    {
      !(context._currentRenderer2 === undefined || context._currentRenderer2 === null || context._currentRenderer2 === rendererSigil) ? warningWithoutStack$1(false, 'Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.') : void 0;
      context._currentRenderer2 = rendererSigil;
    }
  }
}

function popProvider(providerFiber) {
  var currentValue = valueCursor.current;

  pop(valueCursor, providerFiber);

  var context = providerFiber.type._context;
  if (isPrimaryRenderer) {
    context._currentValue = currentValue;
  } else {
    context._currentValue2 = currentValue;
  }
}

function calculateChangedBits(context, newValue, oldValue) {
  if (is(oldValue, newValue)) {
    // No change
    return 0;
  } else {
    var changedBits = typeof context._calculateChangedBits === 'function' ? context._calculateChangedBits(oldValue, newValue) : maxSigned31BitInt;

    {
      !((changedBits & maxSigned31BitInt) === changedBits) ? warning$1(false, 'calculateChangedBits: Expected the return value to be a ' + '31-bit integer. Instead received: %s', changedBits) : void 0;
    }
    return changedBits | 0;
  }
}

function scheduleWorkOnParentPath(parent, renderExpirationTime) {
  // Update the child expiration time of all the ancestors, including
  // the alternates.
  var node = parent;
  while (node !== null) {
    var alternate = node.alternate;
    if (node.childExpirationTime < renderExpirationTime) {
      node.childExpirationTime = renderExpirationTime;
      if (alternate !== null && alternate.childExpirationTime < renderExpirationTime) {
        alternate.childExpirationTime = renderExpirationTime;
      }
    } else if (alternate !== null && alternate.childExpirationTime < renderExpirationTime) {
      alternate.childExpirationTime = renderExpirationTime;
    } else {
      // Neither alternate was updated, which means the rest of the
      // ancestor path already has sufficient priority.
      break;
    }
    node = node.return;
  }
}

function propagateContextChange(workInProgress, context, changedBits, renderExpirationTime) {
  var fiber = workInProgress.child;
  if (fiber !== null) {
    // Set the return pointer of the child to the work-in-progress fiber.
    fiber.return = workInProgress;
  }
  while (fiber !== null) {
    var nextFiber = void 0;

    // Visit this fiber.
    var list = fiber.contextDependencies;
    if (list !== null) {
      nextFiber = fiber.child;

      var dependency = list.first;
      while (dependency !== null) {
        // Check if the context matches.
        if (dependency.context === context && (dependency.observedBits & changedBits) !== 0) {
          // Match! Schedule an update on this fiber.

          if (fiber.tag === ClassComponent) {
            // Schedule a force update on the work-in-progress.
            var update = createUpdate(renderExpirationTime);
            update.tag = ForceUpdate;
            // TODO: Because we don't have a work-in-progress, this will add the
            // update to the current fiber, too, which means it will persist even if
            // this render is thrown away. Since it's a race condition, not sure it's
            // worth fixing.
            enqueueUpdate(fiber, update);
          }

          if (fiber.expirationTime < renderExpirationTime) {
            fiber.expirationTime = renderExpirationTime;
          }
          var alternate = fiber.alternate;
          if (alternate !== null && alternate.expirationTime < renderExpirationTime) {
            alternate.expirationTime = renderExpirationTime;
          }

          scheduleWorkOnParentPath(fiber.return, renderExpirationTime);

          // Mark the expiration time on the list, too.
          if (list.expirationTime < renderExpirationTime) {
            list.expirationTime = renderExpirationTime;
          }

          // Since we already found a match, we can stop traversing the
          // dependency list.
          break;
        }
        dependency = dependency.next;
      }
    } else if (fiber.tag === ContextProvider) {
      // Don't scan deeper if this is a matching provider
      nextFiber = fiber.type === workInProgress.type ? null : fiber.child;
    } else if (enableSuspenseServerRenderer && fiber.tag === DehydratedSuspenseComponent) {
      // If a dehydrated suspense component is in this subtree, we don't know
      // if it will have any context consumers in it. The best we can do is
      // mark it as having updates on its children.
      if (fiber.expirationTime < renderExpirationTime) {
        fiber.expirationTime = renderExpirationTime;
      }
      var _alternate = fiber.alternate;
      if (_alternate !== null && _alternate.expirationTime < renderExpirationTime) {
        _alternate.expirationTime = renderExpirationTime;
      }
      // This is intentionally passing this fiber as the parent
      // because we want to schedule this fiber as having work
      // on its children. We'll use the childExpirationTime on
      // this fiber to indicate that a context has changed.
      scheduleWorkOnParentPath(fiber, renderExpirationTime);
      nextFiber = fiber.sibling;
    } else {
      // Traverse down.
      nextFiber = fiber.child;
    }

    if (nextFiber !== null) {
      // Set the return pointer of the child to the work-in-progress fiber.
      nextFiber.return = fiber;
    } else {
      // No child. Traverse to next sibling.
      nextFiber = fiber;
      while (nextFiber !== null) {
        if (nextFiber === workInProgress) {
          // We're back to the root of this subtree. Exit.
          nextFiber = null;
          break;
        }
        var sibling = nextFiber.sibling;
        if (sibling !== null) {
          // Set the return pointer of the sibling to the work-in-progress fiber.
          sibling.return = nextFiber.return;
          nextFiber = sibling;
          break;
        }
        // No more siblings. Traverse up.
        nextFiber = nextFiber.return;
      }
    }
    fiber = nextFiber;
  }
}

function prepareToReadContext(workInProgress, renderExpirationTime) {
  currentlyRenderingFiber = workInProgress;
  lastContextDependency = null;
  lastContextWithAllBitsObserved = null;

  var currentDependencies = workInProgress.contextDependencies;
  if (currentDependencies !== null && currentDependencies.expirationTime >= renderExpirationTime) {
    // Context list has a pending update. Mark that this fiber performed work.
    markWorkInProgressReceivedUpdate();
  }

  // Reset the work-in-progress list
  workInProgress.contextDependencies = null;
}

function readContext(context, observedBits) {
  {
    // This warning would fire if you read context inside a Hook like useMemo.
    // Unlike the class check below, it's not enforced in production for perf.
    !!isDisallowedContextReadInDEV ? warning$1(false, 'Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().') : void 0;
  }

  if (lastContextWithAllBitsObserved === context) {
    // Nothing to do. We already observe everything in this context.
  } else if (observedBits === false || observedBits === 0) {
    // Do not observe any updates.
  } else {
    var resolvedObservedBits = void 0; // Avoid deopting on observable arguments or heterogeneous types.
    if (typeof observedBits !== 'number' || observedBits === maxSigned31BitInt) {
      // Observe all updates.
      lastContextWithAllBitsObserved = context;
      resolvedObservedBits = maxSigned31BitInt;
    } else {
      resolvedObservedBits = observedBits;
    }

    var contextItem = {
      context: context,
      observedBits: resolvedObservedBits,
      next: null
    };

    if (lastContextDependency === null) {
      !(currentlyRenderingFiber !== null) ? invariant(false, 'Context can only be read while React is rendering. In classes, you can read it in the render method or getDerivedStateFromProps. In function components, you can read it directly in the function body, but not inside Hooks like useReducer() or useMemo().') : void 0;

      // This is the first dependency for this component. Create a new list.
      lastContextDependency = contextItem;
      currentlyRenderingFiber.contextDependencies = {
        first: contextItem,
        expirationTime: NoWork
      };
    } else {
      // Append a new context item.
      lastContextDependency = lastContextDependency.next = contextItem;
    }
  }
  return isPrimaryRenderer ? context._currentValue : context._currentValue2;
}

// UpdateQueue is a linked list of prioritized updates.
//
// Like fibers, update queues come in pairs: a current queue, which represents
// the visible state of the screen, and a work-in-progress queue, which can be
// mutated and processed asynchronously before it is committed — a form of
// double buffering. If a work-in-progress render is discarded before finishing,
// we create a new work-in-progress by cloning the current queue.
//
// Both queues share a persistent, singly-linked list structure. To schedule an
// update, we append it to the end of both queues. Each queue maintains a
// pointer to first update in the persistent list that hasn't been processed.
// The work-in-progress pointer always has a position equal to or greater than
// the current queue, since we always work on that one. The current queue's
// pointer is only updated during the commit phase, when we swap in the
// work-in-progress.
//
// For example:
//
//   Current pointer:           A - B - C - D - E - F
//   Work-in-progress pointer:              D - E - F
//                                          ^
//                                          The work-in-progress queue has
//                                          processed more updates than current.
//
// The reason we append to both queues is because otherwise we might drop
// updates without ever processing them. For example, if we only add updates to
// the work-in-progress queue, some updates could be lost whenever a work-in
// -progress render restarts by cloning from current. Similarly, if we only add
// updates to the current queue, the updates will be lost whenever an already
// in-progress queue commits and swaps with the current queue. However, by
// adding to both queues, we guarantee that the update will be part of the next
// work-in-progress. (And because the work-in-progress queue becomes the
// current queue once it commits, there's no danger of applying the same
// update twice.)
//
// Prioritization
// --------------
//
// Updates are not sorted by priority, but by insertion; new updates are always
// appended to the end of the list.
//
// The priority is still important, though. When processing the update queue
// during the render phase, only the updates with sufficient priority are
// included in the result. If we skip an update because it has insufficient
// priority, it remains in the queue to be processed later, during a lower
// priority render. Crucially, all updates subsequent to a skipped update also
// remain in the queue *regardless of their priority*. That means high priority
// updates are sometimes processed twice, at two separate priorities. We also
// keep track of a base state, that represents the state before the first
// update in the queue is applied.
//
// For example:
//
//   Given a base state of '', and the following queue of updates
//
//     A1 - B2 - C1 - D2
//
//   where the number indicates the priority, and the update is applied to the
//   previous state by appending a letter, React will process these updates as
//   two separate renders, one per distinct priority level:
//
//   First render, at priority 1:
//     Base state: ''
//     Updates: [A1, C1]
//     Result state: 'AC'
//
//   Second render, at priority 2:
//     Base state: 'A'            <-  The base state does not include C1,
//                                    because B2 was skipped.
//     Updates: [B2, C1, D2]      <-  C1 was rebased on top of B2
//     Result state: 'ABCD'
//
// Because we process updates in insertion order, and rebase high priority
// updates when preceding updates are skipped, the final result is deterministic
// regardless of priority. Intermediate state may vary according to system
// resources, but the final state is always the same.

var UpdateState = 0;
var ReplaceState = 1;
var ForceUpdate = 2;
var CaptureUpdate = 3;

// Global state that is reset at the beginning of calling `processUpdateQueue`.
// It should only be read right after calling `processUpdateQueue`, via
// `checkHasForceUpdateAfterProcessing`.
var hasForceUpdate = false;

var didWarnUpdateInsideUpdate = void 0;
var currentlyProcessingQueue = void 0;
var resetCurrentlyProcessingQueue = void 0;
{
  didWarnUpdateInsideUpdate = false;
  currentlyProcessingQueue = null;
  resetCurrentlyProcessingQueue = function () {
    currentlyProcessingQueue = null;
  };
}

function createUpdateQueue(baseState) {
  var queue = {
    baseState: baseState,
    firstUpdate: null,
    lastUpdate: null,
    firstCapturedUpdate: null,
    lastCapturedUpdate: null,
    firstEffect: null,
    lastEffect: null,
    firstCapturedEffect: null,
    lastCapturedEffect: null
  };
  return queue;
}

function cloneUpdateQueue(currentQueue) {
  var queue = {
    baseState: currentQueue.baseState,
    firstUpdate: currentQueue.firstUpdate,
    lastUpdate: currentQueue.lastUpdate,

    // TODO: With resuming, if we bail out and resuse the child tree, we should
    // keep these effects.
    firstCapturedUpdate: null,
    lastCapturedUpdate: null,

    firstEffect: null,
    lastEffect: null,

    firstCapturedEffect: null,
    lastCapturedEffect: null
  };
  return queue;
}

function createUpdate(expirationTime) {
  return {
    expirationTime: expirationTime,

    tag: UpdateState,
    payload: null,
    callback: null,

    next: null,
    nextEffect: null
  };
}

function appendUpdateToQueue(queue, update) {
  // Append the update to the end of the list.
  if (queue.lastUpdate === null) {
    // Queue is empty
    queue.firstUpdate = queue.lastUpdate = update;
  } else {
    queue.lastUpdate.next = update;
    queue.lastUpdate = update;
  }
}

function enqueueUpdate(fiber, update) {
  // Update queues are created lazily.
  var alternate = fiber.alternate;
  var queue1 = void 0;
  var queue2 = void 0;
  if (alternate === null) {
    // There's only one fiber.
    queue1 = fiber.updateQueue;
    queue2 = null;
    if (queue1 === null) {
      queue1 = fiber.updateQueue = createUpdateQueue(fiber.memoizedState);
    }
  } else {
    // There are two owners.
    queue1 = fiber.updateQueue;
    queue2 = alternate.updateQueue;
    if (queue1 === null) {
      if (queue2 === null) {
        // Neither fiber has an update queue. Create new ones.
        queue1 = fiber.updateQueue = createUpdateQueue(fiber.memoizedState);
        queue2 = alternate.updateQueue = createUpdateQueue(alternate.memoizedState);
      } else {
        // Only one fiber has an update queue. Clone to create a new one.
        queue1 = fiber.updateQueue = cloneUpdateQueue(queue2);
      }
    } else {
      if (queue2 === null) {
        // Only one fiber has an update queue. Clone to create a new one.
        queue2 = alternate.updateQueue = cloneUpdateQueue(queue1);
      } else {
        // Both owners have an update queue.
      }
    }
  }
  if (queue2 === null || queue1 === queue2) {
    // There's only a single queue.
    appendUpdateToQueue(queue1, update);
  } else {
    // There are two queues. We need to append the update to both queues,
    // while accounting for the persistent structure of the list — we don't
    // want the same update to be added multiple times.
    if (queue1.lastUpdate === null || queue2.lastUpdate === null) {
      // One of the queues is not empty. We must add the update to both queues.
      appendUpdateToQueue(queue1, update);
      appendUpdateToQueue(queue2, update);
    } else {
      // Both queues are non-empty. The last update is the same in both lists,
      // because of structural sharing. So, only append to one of the lists.
      appendUpdateToQueue(queue1, update);
      // But we still need to update the `lastUpdate` pointer of queue2.
      queue2.lastUpdate = update;
    }
  }

  {
    if (fiber.tag === ClassComponent && (currentlyProcessingQueue === queue1 || queue2 !== null && currentlyProcessingQueue === queue2) && !didWarnUpdateInsideUpdate) {
      warningWithoutStack$1(false, 'An update (setState, replaceState, or forceUpdate) was scheduled ' + 'from inside an update function. Update functions should be pure, ' + 'with zero side-effects. Consider using componentDidUpdate or a ' + 'callback.');
      didWarnUpdateInsideUpdate = true;
    }
  }
}

function enqueueCapturedUpdate(workInProgress, update) {
  // Captured updates go into a separate list, and only on the work-in-
  // progress queue.
  var workInProgressQueue = workInProgress.updateQueue;
  if (workInProgressQueue === null) {
    workInProgressQueue = workInProgress.updateQueue = createUpdateQueue(workInProgress.memoizedState);
  } else {
    // TODO: I put this here rather than createWorkInProgress so that we don't
    // clone the queue unnecessarily. There's probably a better way to
    // structure this.
    workInProgressQueue = ensureWorkInProgressQueueIsAClone(workInProgress, workInProgressQueue);
  }

  // Append the update to the end of the list.
  if (workInProgressQueue.lastCapturedUpdate === null) {
    // This is the first render phase update
    workInProgressQueue.firstCapturedUpdate = workInProgressQueue.lastCapturedUpdate = update;
  } else {
    workInProgressQueue.lastCapturedUpdate.next = update;
    workInProgressQueue.lastCapturedUpdate = update;
  }
}

function ensureWorkInProgressQueueIsAClone(workInProgress, queue) {
  var current = workInProgress.alternate;
  if (current !== null) {
    // If the work-in-progress queue is equal to the current queue,
    // we need to clone it first.
    if (queue === current.updateQueue) {
      queue = workInProgress.updateQueue = cloneUpdateQueue(queue);
    }
  }
  return queue;
}

function getStateFromUpdate(workInProgress, queue, update, prevState, nextProps, instance) {
  switch (update.tag) {
    case ReplaceState:
      {
        var _payload = update.payload;
        if (typeof _payload === 'function') {
          // Updater function
          {
            enterDisallowedContextReadInDEV();
            if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
              _payload.call(instance, prevState, nextProps);
            }
          }
          var nextState = _payload.call(instance, prevState, nextProps);
          {
            exitDisallowedContextReadInDEV();
          }
          return nextState;
        }
        // State object
        return _payload;
      }
    case CaptureUpdate:
      {
        workInProgress.effectTag = workInProgress.effectTag & ~ShouldCapture | DidCapture;
      }
    // Intentional fallthrough
    case UpdateState:
      {
        var _payload2 = update.payload;
        var partialState = void 0;
        if (typeof _payload2 === 'function') {
          // Updater function
          {
            enterDisallowedContextReadInDEV();
            if (debugRenderPhaseSideEffects || debugRenderPhaseSideEffectsForStrictMode && workInProgress.mode & StrictMode) {
              _payload2.call(instance, prevState, nextProps);
            }
          }
          partialState = _payload2.call(instance, prevState, nextProps);
          {
            exitDisallowedContextReadInDEV();
          }
        } else {
          // Partial state object
          partialState = _payload2;
        }
        if (partialState === null || partialState === undefined) {
          // Null and undefined are treated as no-ops.
          return prevState;
        }
        // Merge the partial state and the previous state.
        return _assign({}, prevState, partialState);
      }
    case ForceUpdate:
      {
        hasForceUpdate = true;
        return prevState;
      }
  }
  return prevState;
}

function processUpdateQueue(workInProgress, queue, props, instance, renderExpirationTime) {
  hasForceUpdate = false;

  queue = ensureWorkInProgressQueueIsAClone(workInProgress, queue);

  {
    currentlyProcessingQueue = queue;
  }

  // These values may change as we process the queue.
  var newBaseState = queue.baseState;
  var newFirstUpdate = null;
  var newExpirationTime = NoWork;

  // Iterate through the list of updates to compute the result.
  var update = queue.firstUpdate;
  var resultState = newBaseState;
  while (update !== null) {
    var updateExpirationTime = update.expirationTime;
    if (updateExpirationTime < renderExpirationTime) {
      // This update does not have sufficient priority. Skip it.
      if (newFirstUpdate === null) {
        // This is the first skipped update. It will be the first update in
        // the new list.
        newFirstUpdate = update;
        // Since this is the first update that was skipped, the current result
        // is the new base state.
        newBaseState = resultState;
      }
      // Since this update will remain in the list, update the remaining
      // expiration time.
      if (newExpirationTime < updateExpirationTime) {
        newExpirationTime = updateExpirationTime;
      }
    } else {
      // This update does have sufficient priority. Process it and compute
      // a new result.
      resultState = getStateFromUpdate(workInProgress, queue, update, resultState, props, instance);
      var _callback = update.callback;
      if (_callback !== null) {
        workInProgress.effectTag |= Callback;
        // Set this to null, in case it was mutated during an aborted render.
        update.nextEffect = null;
        if (queue.lastEffect === null) {
          queue.firstEffect = queue.lastEffect = update;
        } else {
          queue.lastEffect.nextEffect = update;
          queue.lastEffect = update;
        }
      }
    }
    // Continue to the next update.
    update = update.next;
  }

  // Separately, iterate though the list of captured updates.
  var newFirstCapturedUpdate = null;
  update = queue.firstCapturedUpdate;
  while (update !== null) {
    var _updateExpirationTime = update.expirationTime;
    if (_updateExpirationTime < renderExpirationTime) {
      // This update does not have sufficient priority. Skip it.
      if (newFirstCapturedUpdate === null) {
        // This is the first skipped captured update. It will be the first
        // update in the new list.
        newFirstCapturedUpdate = update;
        // If this is the first update that was skipped, the current result is
        // the new base state.
        if (newFirstUpdate === null) {
          newBaseState = resultState;
        }
      }
      // Since this update will remain in the list, update the remaining
      // expiration time.
      if (newExpirationTime < _updateExpirationTime) {
        newExpirationTime = _updateExpirationTime;
      }
    } else {
      // This update does have sufficient priority. Process it and compute
      // a new result.
      resultState = getStateFromUpdate(workInProgress, queue, update, resultState, props, instance);
      var _callback2 = update.callback;
      if (_callback2 !== null) {
        workInProgress.effectTag |= Callback;
        // Set this to null, in case it was mutated during an aborted render.
        update.nextEffect = null;
        if (queue.lastCapturedEffect === null) {
          queue.firstCapturedEffect = queue.lastCapturedEffect = update;
        } else {
          queue.lastCapturedEffect.nextEffect = update;
          queue.lastCapturedEffect = update;
        }
      }
    }
    update = update.next;
  }

  if (newFirstUpdate === null) {
    queue.lastUpdate = null;
  }
  if (newFirstCapturedUpdate === null) {
    queue.lastCapturedUpdate = null;
  } else {
    workInProgress.effectTag |= Callback;
  }
  if (newFirstUpdate === null && newFirstCapturedUpdate === null) {
    // We processed every update, without skipping. That means the new base
    // state is the same as the result state.
    newBaseState = resultState;
  }

  queue.baseState = newBaseState;
  queue.firstUpdate = newFirstUpdate;
  queue.firstCapturedUpdate = newFirstCapturedUpdate;

  // Set the remaining expiration time to be whatever is remaining in the queue.
  // This should be fine because the only two other things that contribute to
  // expiration time are props and context. We're already in the middle of the
  // begin phase by the time we start processing the queue, so we've already
  // dealt with the props. Context in components that specify
  // shouldComponentUpdate is tricky; but we'll have to account for
  // that regardless.
  workInProgress.expirationTime = newExpirationTime;
  workInProgress.memoizedState = resultState;

  {
    currentlyProcessingQueue = null;
  }
}

function callCallback(callback, context) {
  !(typeof callback === 'function') ? invariant(false, 'Invalid argument passed as callback. Expected a function. Instead received: %s', callback) : void 0;
  callback.call(context);
}

function resetHasForceUpdateBeforeProcessing() {
  hasForceUpdate = false;
}

function checkHasForceUpdateAfterProcessing() {
  return hasForceUpdate;
}

function commitUpdateQueue(finishedWork, finishedQueue, instance, renderExpirationTime) {
  // If the finished render included captured updates, and there are still
  // lower priority updates left over, we need to keep the captured updates
  // in the queue so that they are rebased and not dropped once we process the
  // queue again at the lower priority.
  if (finishedQueue.firstCapturedUpdate !== null) {
    // Join the captured update list to the end of the normal list.
    if (finishedQueue.lastUpdate !== null) {
      finishedQueue.lastUpdate.next = finishedQueue.firstCapturedUpdate;
      finishedQueue.lastUpdate = finishedQueue.lastCapturedUpdate;
    }
    // Clear the list of captured updates.
    finishedQueue.firstCapturedUpdate = finishedQueue.lastCapturedUpdate = null;
  }

  // Commit the effects
  commitUpdateEffects(finishedQueue.firstEffect, instance);
  finishedQueue.firstEffect = finishedQueue.lastEffect = null;

  commitUpdateEffects(finishedQueue.firstCapturedEffect, instance);
  finishedQueue.firstCapturedEffect = finishedQueue.lastCapturedEffect = null;
}

function commitUpdateEffects(effect, instance) {
  while (effect !== null) {
    var _callback3 = effect.callback;
    if (_callback3 !== null) {
      effect.callback = null;
      callCallback(_callback3, instance);
    }
    effect = effect.nextEffect;
  }
}

function createCapturedValue(value, source) {
  // If the value is an error, call this function immediately after it is thrown
  // so the stack is accurate.
  return {
    value: value,
    source: source,
    stack: getStackByFiberInDevAndProd(source)
  };
}

function markUpdate(workInProgress) {
  // Tag the fiber with an update effect. This turns a Placement into
  // a PlacementAndUpdate.
  workInProgress.effectTag |= Update;
}

function markRef$1(workInProgress) {
  workInProgress.effectTag |= Ref;
}

var appendAllChildren = void 0;
var updateHostContainer = void 0;
var updateHostComponent$1 = void 0;
var updateHostText$1 = void 0;
if (supportsMutation) {
  // Mutation mode

  appendAllChildren = function (parent, workInProgress, needsVisibilityToggle, isHidden) {
    // We only have the top Fiber that was created but we need recurse down its
    // children to find all the terminal nodes.
    var node = workInProgress.child;
    while (node !== null) {
      if (node.tag === HostComponent || node.tag === HostText) {
        appendInitialChild(parent, node.stateNode);
      } else if (node.tag === HostPortal) {
        // If we have a portal child, then we don't want to traverse
        // down its children. Instead, we'll get insertions from each child in
        // the portal directly.
      } else if (node.child !== null) {
        node.child.return = node;
        node = node.child;
        continue;
      }
      if (node === workInProgress) {
        return;
      }
      while (node.sibling === null) {
        if (node.return === null || node.return === workInProgress) {
          return;
        }
        node = node.return;
      }
      node.sibling.return = node.return;
      node = node.sibling;
    }
  };

  updateHostContainer = function (workInProgress) {
    // Noop
  };
  updateHostComponent$1 = function (current, workInProgress, type, newProps, rootContainerInstance) {
    // If we have an alternate, that means this is an update and we need to
    // schedule a side-effect to do the updates.
    var oldProps = current.memoizedProps;
    if (oldProps === newProps) {
      // In mutation mode, this is sufficient for a bailout because
      // we won't touch this node even if children changed.
      return;
    }

    // If we get updated because one of our children updated, we don't
    // have newProps so we'll have to reuse them.
    // TODO: Split the update API as separate for the props vs. children.
    // Even better would be if children weren't special cased at all tho.
    var instance = workInProgress.stateNode;
    var currentHostContext = getHostContext();
    // TODO: Experiencing an error where oldProps is null. Suggests a host
    // component is hitting the resume path. Figure out why. Possibly
    // related to `hidden`.
    var updatePayload = prepareUpdate(instance, type, oldProps, newProps, rootContainerInstance, currentHostContext);
    // TODO: Type this specific to this type of component.
    workInProgress.updateQueue = updatePayload;
    // If the update payload indicates that there is a change or if there
    // is a new ref we mark this as an update. All the work is done in commitWork.
    if (updatePayload) {
      markUpdate(workInProgress);
    }
  };
  updateHostText$1 = function (current, workInProgress, oldText, newText) {
    // If the text differs, mark it as an update. All the work in done in commitWork.
    if (oldText !== newText) {
      markUpdate(workInProgress);
    }
  };
} else if (supportsPersistence) {
  // Persistent host tree mode

  appendAllChildren = function (parent, workInProgress, needsVisibilityToggle, isHidden) {
    // We only have the top Fiber that was created but we need recurse down its
    // children to find all the terminal nodes.
    var node = workInProgress.child;
    while (node !== null) {
      // eslint-disable-next-line no-labels
      branches: if (node.tag === HostComponent) {
        var instance = node.stateNode;
        if (needsVisibilityToggle) {
          var props = node.memoizedProps;
          var type = node.type;
          if (isHidden) {
            // This child is inside a timed out tree. Hide it.
            instance = cloneHiddenInstance(instance, type, props, node);
          } else {
            // This child was previously inside a timed out tree. If it was not
            // updated during this render, it may need to be unhidden. Clone
            // again to be sure.
            instance = cloneUnhiddenInstance(instance, type, props, node);
          }
          node.stateNode = instance;
        }
        appendInitialChild(parent, instance);
      } else if (node.tag === HostText) {
        var _instance = node.stateNode;
        if (needsVisibilityToggle) {
          var text = node.memoizedProps;
          var rootContainerInstance = getRootHostContainer();
          var currentHostContext = getHostContext();
          if (isHidden) {
            _instance = createHiddenTextInstance(text, rootContainerInstance, currentHostContext, workInProgress);
          } else {
            _instance = createTextInstance(text, rootContainerInstance, currentHostContext, workInProgress);
          }
          node.stateNode = _instance;
        }
        appendInitialChild(parent, _instance);
      } else if (node.tag === HostPortal) {
        // If we have a portal child, then we don't want to traverse
        // down its children. Instead, we'll get insertions from each child in
        // the portal directly.
      } else if (node.tag === SuspenseComponent) {
        var current = node.alternate;
        if (current !== null) {
          var oldState = current.memoizedState;
          var newState = node.memoizedState;
          var oldIsHidden = oldState !== null;
          var newIsHidden = newState !== null;
          if (oldIsHidden !== newIsHidden) {
            // The placeholder either just timed out or switched back to the normal
            // children after having previously timed out. Toggle the visibility of
            // the direct host children.
            var primaryChildParent = newIsHidden ? node.child : node;
            if (primaryChildParent !== null) {
              appendAllChildren(parent, primaryChildParent, true, newIsHidden);
            }
            // eslint-disable-next-line no-labels
            break branches;
          }
        }
        if (node.child !== null) {
          // Continue traversing like normal
          node.child.return = node;
          node = node.child;
          continue;
        }
      } else if (node.child !== null) {
        node.child.return = node;
        node = node.child;
        continue;
      }
      // $FlowFixMe This is correct but Flow is confused by the labeled break.
      node = node;
      if (node === workInProgress) {
        return;
      }
      while (node.sibling === null) {
        if (node.return === null || node.return === workInProgress) {
          return;
        }
        node = node.return;
      }
      node.sibling.return = node.return;
      node = node.sibling;
    }
  };

  // An unfortunate fork of appendAllChildren because we have two different parent types.
  var appendAllChildrenToContainer = function (containerChildSet, workInProgress, needsVisibilityToggle, isHidden) {
    // We only have the top Fiber that was created but we need recurse down its
    // children to find all the terminal nodes.
    var node = workInProgress.child;
    while (node !== null) {
      // eslint-disable-next-line no-labels
      branches: if (node.tag === HostComponent) {
        var instance = node.stateNode;
        if (needsVisibilityToggle) {
          var props = node.memoizedProps;
          var type = node.type;
          if (isHidden) {
            // This child is inside a timed out tree. Hide it.
            instance = cloneHiddenInstance(instance, type, props, node);
          } else {
            // This child was previously inside a timed out tree. If it was not
            // updated during this render, it may need to be unhidden. Clone
            // again to be sure.
            instance = cloneUnhiddenInstance(instance, type, props, node);
          }
          node.stateNode = instance;
        }
        appendChildToContainerChildSet(containerChildSet, instance);
      } else if (node.tag === HostText) {
        var _instance2 = node.stateNode;
        if (needsVisibilityToggle) {
          var text = node.memoizedProps;
          var rootContainerInstance = getRootHostContainer();
          var currentHostContext = getHostContext();
          if (isHidden) {
            _instance2 = createHiddenTextInstance(text, rootContainerInstance, currentHostContext, workInProgress);
          } else {
            _instance2 = createTextInstance(text, rootContainerInstance, currentHostContext, workInProgress);
          }
          node.stateNode = _instance2;
        }
        appendChildToContainerChildSet(containerChildSet, _instance2);
      } else if (node.tag === HostPortal) {
        // If we have a portal child, then we don't want to traverse
        // down its children. Instead, we'll get insertions from each child in
        // the portal directly.
      } else if (node.tag === SuspenseComponent) {
        var current = node.alternate;
        if (current !== null) {
          var oldState = current.memoizedState;
          var newState = node.memoizedState;
          var oldIsHidden = oldState !== null;
          var newIsHidden = newState !== null;
          if (oldIsHidden !== newIsHidden) {
            // The placeholder either just timed out or switched back to the normal
            // children after having previously timed out. Toggle the visibility of
            // the direct host children.
            var primaryChildParent = newIsHidden ? node.child : node;
            if (primaryChildParent !== null) {
              appendAllChildrenToContainer(containerChildSet, primaryChildParent, true, newIsHidden);
            }
            // eslint-disable-next-line no-labels
            break branches;
          }
        }
        if (node.child !== null) {
          // Continue traversing like normal
          node.child.return = node;
          node = node.child;
          continue;
        }
      } else if (node.child !== null) {
        node.child.return = node;
        node = node.child;
        continue;
      }
      // $FlowFixMe This is correct but Flow is confused by the labeled break.
      node = node;
      if (node === workInProgress) {
        return;
      }
      while (node.sibling === null) {
        if (node.return === null || node.return === workInProgress) {
          return;
        }
        node = node.return;
      }
      node.sibling.return = node.return;
      node = node.sibling;
    }
  };
  updateHostContainer = function (workInProgress) {
    var portalOrRoot = workInProgress.stateNode;
    var childrenUnchanged = workInProgress.firstEffect === null;
    if (childrenUnchanged) {
      // No changes, just reuse the existing instance.
    } else {
      var container = portalOrRoot.containerInfo;
      var newChildSet = createContainerChildSet(container);
      // If children might have changed, we have to add them all to the set.
      appendAllChildrenToContainer(newChildSet, workInProgress, false, false);
      portalOrRoot.pendingChildren = newChildSet;
      // Schedule an update on the container to swap out the container.
      markUpdate(workInProgress);
      finalizeContainerChildren(container, newChildSet);
    }
  };
  updateHostComponent$1 = function (current, workInProgress, type, newProps, rootContainerInstance) {
    var currentInstance = current.stateNode;
    var oldProps = current.memoizedProps;
    // If there are no effects associated with this node, then none of our children had any updates.
    // This guarantees that we can reuse all of them.
    var childrenUnchanged = workInProgress.firstEffect === null;
    if (childrenUnchanged && oldProps === newProps) {
      // No changes, just reuse the existing instance.
      // Note that this might release a previous clone.
      workInProgress.stateNode = currentInstance;
      return;
    }
    var recyclableInstance = workInProgress.stateNode;
    var currentHostContext = getHostContext();
    var updatePayload = null;
    if (oldProps !== newProps) {
      updatePayload = prepareUpdate(recyclableInstance, type, oldProps, newProps, rootContainerInstance, currentHostContext);
    }
    if (childrenUnchanged && updatePayload === null) {
      // No changes, just reuse the existing instance.
      // Note that this might release a previous clone.
      workInProgress.stateNode = currentInstance;
      return;
    }
    var newInstance = cloneInstance(currentInstance, updatePayload, type, oldProps, newProps, workInProgress, childrenUnchanged, recyclableInstance);
    if (finalizeInitialChildren(newInstance, type, newProps, rootContainerInstance, currentHostContext)) {
      markUpdate(workInProgress);
    }
    workInProgress.stateNode = newInstance;
    if (childrenUnchanged) {
      // If there are no other effects in this tree, we need to flag this node as having one.
      // Even though we're not going to use it for anything.
      // Otherwise parents won't know that there are new children to propagate upwards.
      markUpdate(workInProgress);
    } else {
      // If children might have changed, we have to add them all to the set.
      appendAllChildren(newInstance, workInProgress, false, false);
    }
  };
  updateHostText$1 = function (current, workInProgress, oldText, newText) {
    if (oldText !== newText) {
      // If the text content differs, we'll create a new text instance for it.
      var rootContainerInstance = getRootHostContainer();
      var currentHostContext = getHostContext();
      workInProgress.stateNode = createTextInstance(newText, rootContainerInstance, currentHostContext, workInProgress);
      // We'll have to mark it as having an effect, even though we won't use the effect for anything.
      // This lets the parents know that at least one of their children has changed.
      markUpdate(workInProgress);
    }
  };
} else {
  // No host operations
  updateHostContainer = function (workInProgress) {
    // Noop
  };
  updateHostComponent$1 = function (current, workInProgress, type, newProps, rootContainerInstance) {
    // Noop
  };
  updateHostText$1 = function (current, workInProgress, oldText, newText) {
    // Noop
  };
}

function completeWork(current, workInProgress, renderExpirationTime) {
  var newProps = workInProgress.pendingProps;

  switch (workInProgress.tag) {
    case IndeterminateComponent:
      break;
    case LazyComponent:
      break;
    case SimpleMemoComponent:
    case FunctionComponent:
      break;
    case ClassComponent:
      {
        var Component = workInProgress.type;
        if (isContextProvider(Component)) {
          popContext(workInProgress);
        }
        break;
      }
    case HostRoot:
      {
        popHostContainer(workInProgress);
        popTopLevelContextObject(workInProgress);
        var fiberRoot = workInProgress.stateNode;
        if (fiberRoot.pendingContext) {
          fiberRoot.context = fiberRoot.pendingContext;
          fiberRoot.pendingContext = null;
        }
        if (current === null || current.child === null) {
          // If we hydrated, pop so that we can delete any remaining children
          // that weren't hydrated.
          popHydrationState(workInProgress);
          // This resets the hacky state to fix isMounted before committing.
          // TODO: Delete this when we delete isMounted and findDOMNode.
          workInProgress.effectTag &= ~Placement;
        }
        updateHostContainer(workInProgress);
        break;
      }
    case HostComponent:
      {
        popHostContext(workInProgress);
        var rootContainerInstance = getRootHostContainer();
        var type = workInProgress.type;
        if (current !== null && workInProgress.stateNode != null) {
          updateHostComponent$1(current, workInProgress, type, newProps, rootContainerInstance);

          if (current.ref !== workInProgress.ref) {
            markRef$1(workInProgress);
          }
        } else {
          if (!newProps) {
            !(workInProgress.stateNode !== null) ? invariant(false, 'We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue.') : void 0;
            // This can happen when we abort work.
            break;
          }

          var currentHostContext = getHostContext();
          // TODO: Move createInstance to beginWork and keep it on a context
          // "stack" as the parent. Then append children as we go in beginWork
          // or completeWork depending on we want to add then top->down or
          // bottom->up. Top->down is faster in IE11.
          var wasHydrated = popHydrationState(workInProgress);
          if (wasHydrated) {
            // TODO: Move this and createInstance step into the beginPhase
            // to consolidate.
            if (prepareToHydrateHostInstance(workInProgress, rootContainerInstance, currentHostContext)) {
              // If changes to the hydrated node needs to be applied at the
              // commit-phase we mark this as such.
              markUpdate(workInProgress);
            }
          } else {
            var instance = createInstance(type, newProps, rootContainerInstance, currentHostContext, workInProgress);

            appendAllChildren(instance, workInProgress, false, false);

            // Certain renderers require commit-time effects for initial mount.
            // (eg DOM renderer supports auto-focus for certain elements).
            // Make sure such renderers get scheduled for later work.
            if (finalizeInitialChildren(instance, type, newProps, rootContainerInstance, currentHostContext)) {
              markUpdate(workInProgress);
            }
            workInProgress.stateNode = instance;
          }

          if (workInProgress.ref !== null) {
            // If there is a ref on a host node we need to schedule a callback
            markRef$1(workInProgress);
          }
        }
        break;
      }
    case HostText:
      {
        var newText = newProps;
        if (current && workInProgress.stateNode != null) {
          var oldText = current.memoizedProps;
          // If we have an alternate, that means this is an update and we need
          // to schedule a side-effect to do the updates.
          updateHostText$1(current, workInProgress, oldText, newText);
        } else {
          if (typeof newText !== 'string') {
            !(workInProgress.stateNode !== null) ? invariant(false, 'We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue.') : void 0;
            // This can happen when we abort work.
          }
          var _rootContainerInstance = getRootHostContainer();
          var _currentHostContext = getHostContext();
          var _wasHydrated = popHydrationState(workInProgress);
          if (_wasHydrated) {
            if (prepareToHydrateHostTextInstance(workInProgress)) {
              markUpdate(workInProgress);
            }
          } else {
            workInProgress.stateNode = createTextInstance(newText, _rootContainerInstance, _currentHostContext, workInProgress);
          }
        }
        break;
      }
    case ForwardRef:
      break;
    case SuspenseComponent:
      {
        var nextState = workInProgress.memoizedState;
        if ((workInProgress.effectTag & DidCapture) !== NoEffect) {
          // Something suspended. Re-render with the fallback children.
          workInProgress.expirationTime = renderExpirationTime;
          // Do not reset the effect list.
          return workInProgress;
        }

        var nextDidTimeout = nextState !== null;
        var prevDidTimeout = current !== null && current.memoizedState !== null;

        if (current !== null && !nextDidTimeout && prevDidTimeout) {
          // We just switched from the fallback to the normal children. Delete
          // the fallback.
          // TODO: Would it be better to store the fallback fragment on
          var currentFallbackChild = current.child.sibling;
          if (currentFallbackChild !== null) {
            // Deletions go at the beginning of the return fiber's effect list
            var first = workInProgress.firstEffect;
            if (first !== null) {
              workInProgress.firstEffect = currentFallbackChild;
              currentFallbackChild.nextEffect = first;
            } else {
              workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChild;
              currentFallbackChild.nextEffect = null;
            }
            currentFallbackChild.effectTag = Deletion;
          }
        }

        if (nextDidTimeout || prevDidTimeout) {
          // If the children are hidden, or if they were previous hidden, schedule
          // an effect to toggle their visibility. This is also used to attach a
          // retry listener to the promise.
          workInProgress.effectTag |= Update;
        }
        break;
      }
    case Fragment:
      break;
    case Mode:
      break;
    case Profiler:
      break;
    case HostPortal:
      popHostContainer(workInProgress);
      updateHostContainer(workInProgress);
      break;
    case ContextProvider:
      // Pop provider fiber
      popProvider(workInProgress);
      break;
    case ContextConsumer:
      break;
    case MemoComponent:
      break;
    case IncompleteClassComponent:
      {
        // Same as class component case. I put it down here so that the tags are
        // sequential to ensure this switch is compiled to a jump table.
        var _Component = workInProgress.type;
        if (isContextProvider(_Component)) {
          popContext(workInProgress);
        }
        break;
      }
    case DehydratedSuspenseComponent:
      {
        if (enableSuspenseServerRenderer) {
          if (current === null) {
            var _wasHydrated2 = popHydrationState(workInProgress);
            !_wasHydrated2 ? invariant(false, 'A dehydrated suspense component was completed without a hydrated node. This is probably a bug in React.') : void 0;
            skipPastDehydratedSuspenseInstance(workInProgress);
          } else if ((workInProgress.effectTag & DidCapture) === NoEffect) {
            // This boundary did not suspend so it's now hydrated.
            // To handle any future suspense cases, we're going to now upgrade it
            // to a Suspense component. We detach it from the existing current fiber.
            current.alternate = null;
            workInProgress.alternate = null;
            workInProgress.tag = SuspenseComponent;
            workInProgress.memoizedState = null;
            workInProgress.stateNode = null;
          }
        }
        break;
      }
    default:
      invariant(false, 'Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue.');
  }

  return null;
}

function shouldCaptureSuspense(workInProgress) {
  // In order to capture, the Suspense component must have a fallback prop.
  if (workInProgress.memoizedProps.fallback === undefined) {
    return false;
  }
  // If it was the primary children that just suspended, capture and render the
  // fallback. Otherwise, don't capture and bubble to the next boundary.
  var nextState = workInProgress.memoizedState;
  return nextState === null;
}

// This module is forked in different environments.
// By default, return `true` to log errors to the console.
// Forks can return `false` if this isn't desirable.
function showErrorDialog(capturedError) {
  return true;
}

function logCapturedError(capturedError) {
  var logError = showErrorDialog(capturedError);

  // Allow injected showErrorDialog() to prevent default console.error logging.
  // This enables renderers like ReactNative to better manage redbox behavior.
  if (logError === false) {
    return;
  }

  var error = capturedError.error;
  {
    var componentName = capturedError.componentName,
        componentStack = capturedError.componentStack,
        errorBoundaryName = capturedError.errorBoundaryName,
        errorBoundaryFound = capturedError.errorBoundaryFound,
        willRetry = capturedError.willRetry;

    // Browsers support silencing uncaught errors by calling
    // `preventDefault()` in window `error` handler.
    // We record this information as an expando on the error.

    if (error != null && error._suppressLogging) {
      if (errorBoundaryFound && willRetry) {
        // The error is recoverable and was silenced.
        // Ignore it and don't print the stack addendum.
        // This is handy for testing error boundaries without noise.
        return;
      }
      // The error is fatal. Since the silencing might have
      // been accidental, we'll surface it anyway.
      // However, the browser would have silenced the original error
      // so we'll print it first, and then print the stack addendum.
      console.error(error);
      // For a more detailed description of this block, see:
      // https://github.com/facebook/react/pull/13384
    }

    var componentNameMessage = componentName ? 'The above error occurred in the <' + componentName + '> component:' : 'The above error occurred in one of your React components:';

    var errorBoundaryMessage = void 0;
    // errorBoundaryFound check is sufficient; errorBoundaryName check is to satisfy Flow.
    if (errorBoundaryFound && errorBoundaryName) {
      if (willRetry) {
        errorBoundaryMessage = 'React will try to recreate this component tree from scratch ' + ('using the error boundary you provided, ' + errorBoundaryName + '.');
      } else {
        errorBoundaryMessage = 'This error was initially handled by the error boundary ' + errorBoundaryName + '.\n' + 'Recreating the tree from scratch failed so React will unmount the tree.';
      }
    } else {
      errorBoundaryMessage = 'Consider adding an error boundary to your tree to customize error handling behavior.\n' + 'Visit https://fb.me/react-error-boundaries to learn more about error boundaries.';
    }
    var combinedMessage = '' + componentNameMessage + componentStack + '\n\n' + ('' + errorBoundaryMessage);

    // In development, we provide our own message with just the component stack.
    // We don't include the original error message and JS stack because the browser
    // has already printed it. Even if the application swallows the error, it is still
    // displayed by the browser thanks to the DEV-only fake event trick in ReactErrorUtils.
    console.error(combinedMessage);
  }
}

var didWarnAboutUndefinedSnapshotBeforeUpdate = null;
{
  didWarnAboutUndefinedSnapshotBeforeUpdate = new Set();
}

var PossiblyWeakSet$1 = typeof WeakSet === 'function' ? WeakSet : Set;

function logError(boundary, errorInfo) {
  var source = errorInfo.source;
  var stack = errorInfo.stack;
  if (stack === null && source !== null) {
    stack = getStackByFiberInDevAndProd(source);
  }

  var capturedError = {
    componentName: source !== null ? getComponentName(source.type) : null,
    componentStack: stack !== null ? stack : '',
    error: errorInfo.value,
    errorBoundary: null,
    errorBoundaryName: null,
    errorBoundaryFound: false,
    willRetry: false
  };

  if (boundary !== null && boundary.tag === ClassComponent) {
    capturedError.errorBoundary = boundary.stateNode;
    capturedError.errorBoundaryName = getComponentName(boundary.type);
    capturedError.errorBoundaryFound = true;
    capturedError.willRetry = true;
  }

  try {
    logCapturedError(capturedError);
  } catch (e) {
    // This method must not throw, or React internal state will get messed up.
    // If console.error is overridden, or logCapturedError() shows a dialog that throws,
    // we want to report this error outside of the normal stack as a last resort.
    // https://github.com/facebook/react/issues/13188
    setTimeout(function () {
      throw e;
    });
  }
}

var callComponentWillUnmountWithTimer = function (current$$1, instance) {
  startPhaseTimer(current$$1, 'componentWillUnmount');
  instance.props = current$$1.memoizedProps;
  instance.state = current$$1.memoizedState;
  instance.componentWillUnmount();
  stopPhaseTimer();
};

// Capture errors so they don't interrupt unmounting.
function safelyCallComponentWillUnmount(current$$1, instance) {
  {
    invokeGuardedCallback(null, callComponentWillUnmountWithTimer, null, current$$1, instance);
    if (hasCaughtError()) {
      var unmountError = clearCaughtError();
      captureCommitPhaseError(current$$1, unmountError);
    }
  }
}

function safelyDetachRef(current$$1) {
  var ref = current$$1.ref;
  if (ref !== null) {
    if (typeof ref === 'function') {
      {
        invokeGuardedCallback(null, ref, null, null);
        if (hasCaughtError()) {
          var refError = clearCaughtError();
          captureCommitPhaseError(current$$1, refError);
        }
      }
    } else {
      ref.current = null;
    }
  }
}

function safelyCallDestroy(current$$1, destroy) {
  {
    invokeGuardedCallback(null, destroy, null);
    if (hasCaughtError()) {
      var error = clearCaughtError();
      captureCommitPhaseError(current$$1, error);
    }
  }
}

function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
  switch (finishedWork.tag) {
    case FunctionComponent:
    case ForwardRef:
    case SimpleMemoComponent:
      {
        commitHookEffectList(UnmountSnapshot, NoEffect$1, finishedWork);
        return;
      }
    case ClassComponent:
      {
        if (finishedWork.effectTag & Snapshot) {
          if (current$$1 !== null) {
            var prevProps = current$$1.memoizedProps;
            var prevState = current$$1.memoizedState;
            startPhaseTimer(finishedWork, 'getSnapshotBeforeUpdate');
            var instance = finishedWork.stateNode;
            // We could update instance props and state here,
            // but instead we rely on them being set during last render.
            // TODO: revisit this when we implement resuming.
            {
              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
                !(instance.props === finishedWork.memoizedProps) ? warning$1(false, 'Expected %s props to match memoized props before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
                !(instance.state === finishedWork.memoizedState) ? warning$1(false, 'Expected %s state to match memoized state before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
              }
            }
            var snapshot = instance.getSnapshotBeforeUpdate(finishedWork.elementType === finishedWork.type ? prevProps : resolveDefaultProps(finishedWork.type, prevProps), prevState);
            {
              var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate;
              if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) {
                didWarnSet.add(finishedWork.type);
                warningWithoutStack$1(false, '%s.getSnapshotBeforeUpdate(): A snapshot value (or null) ' + 'must be returned. You have returned undefined.', getComponentName(finishedWork.type));
              }
            }
            instance.__reactInternalSnapshotBeforeUpdate = snapshot;
            stopPhaseTimer();
          }
        }
        return;
      }
    case HostRoot:
    case HostComponent:
    case HostText:
    case HostPortal:
    case IncompleteClassComponent:
      // Nothing to do for these component types
      return;
    default:
      {
        invariant(false, 'This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.');
      }
  }
}

function commitHookEffectList(unmountTag, mountTag, finishedWork) {
  var updateQueue = finishedWork.updateQueue;
  var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
  if (lastEffect !== null) {
    var firstEffect = lastEffect.next;
    var effect = firstEffect;
    do {
      if ((effect.tag & unmountTag) !== NoEffect$1) {
        // Unmount
        var destroy = effect.destroy;
        effect.destroy = undefined;
        if (destroy !== undefined) {
          destroy();
        }
      }
      if ((effect.tag & mountTag) !== NoEffect$1) {
        // Mount
        var create = effect.create;
        effect.destroy = create();

        {
          var _destroy = effect.destroy;
          if (_destroy !== undefined && typeof _destroy !== 'function') {
            var addendum = void 0;
            if (_destroy === null) {
              addendum = ' You returned null. If your effect does not require clean ' + 'up, return undefined (or nothing).';
            } else if (typeof _destroy.then === 'function') {
              addendum = '\n\nIt looks like you wrote useEffect(async () => ...) or returned a Promise. ' + 'Instead, you may write an async function separately ' + 'and then call it from inside the effect:\n\n' + 'async function fetchComment(commentId) {\n' + '  // You can await here\n' + '}\n\n' + 'useEffect(() => {\n' + '  fetchComment(commentId);\n' + '}, [commentId]);\n\n' + 'In the future, React will provide a more idiomatic solution for data fetching ' + "that doesn't involve writing effects manually.";
            } else {
              addendum = ' You returned: ' + _destroy;
            }
            warningWithoutStack$1(false, 'An Effect function must not return anything besides a function, ' + 'which is used for clean-up.%s%s', addendum, getStackByFiberInDevAndProd(finishedWork));
          }
        }
      }
      effect = effect.next;
    } while (effect !== firstEffect);
  }
}

function commitPassiveHookEffects(finishedWork) {
  commitHookEffectList(UnmountPassive, NoEffect$1, finishedWork);
  commitHookEffectList(NoEffect$1, MountPassive, finishedWork);
}

function commitLifeCycles(finishedRoot, current$$1, finishedWork, committedExpirationTime) {
  switch (finishedWork.tag) {
    case FunctionComponent:
    case ForwardRef:
    case SimpleMemoComponent:
      {
        commitHookEffectList(UnmountLayout, MountLayout, finishedWork);
        break;
      }
    case ClassComponent:
      {
        var instance = finishedWork.stateNode;
        if (finishedWork.effectTag & Update) {
          if (current$$1 === null) {
            startPhaseTimer(finishedWork, 'componentDidMount');
            // We could update instance props and state here,
            // but instead we rely on them being set during last render.
            // TODO: revisit this when we implement resuming.
            {
              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
                !(instance.props === finishedWork.memoizedProps) ? warning$1(false, 'Expected %s props to match memoized props before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
                !(instance.state === finishedWork.memoizedState) ? warning$1(false, 'Expected %s state to match memoized state before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
              }
            }
            instance.componentDidMount();
            stopPhaseTimer();
          } else {
            var prevProps = finishedWork.elementType === finishedWork.type ? current$$1.memoizedProps : resolveDefaultProps(finishedWork.type, current$$1.memoizedProps);
            var prevState = current$$1.memoizedState;
            startPhaseTimer(finishedWork, 'componentDidUpdate');
            // We could update instance props and state here,
            // but instead we rely on them being set during last render.
            // TODO: revisit this when we implement resuming.
            {
              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
                !(instance.props === finishedWork.memoizedProps) ? warning$1(false, 'Expected %s props to match memoized props before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
                !(instance.state === finishedWork.memoizedState) ? warning$1(false, 'Expected %s state to match memoized state before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
              }
            }
            instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate);
            stopPhaseTimer();
          }
        }
        var updateQueue = finishedWork.updateQueue;
        if (updateQueue !== null) {
          {
            if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
              !(instance.props === finishedWork.memoizedProps) ? warning$1(false, 'Expected %s props to match memoized props before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
              !(instance.state === finishedWork.memoizedState) ? warning$1(false, 'Expected %s state to match memoized state before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance') : void 0;
            }
          }
          // We could update instance props and state here,
          // but instead we rely on them being set during last render.
          // TODO: revisit this when we implement resuming.
          commitUpdateQueue(finishedWork, updateQueue, instance, committedExpirationTime);
        }
        return;
      }
    case HostRoot:
      {
        var _updateQueue = finishedWork.updateQueue;
        if (_updateQueue !== null) {
          var _instance = null;
          if (finishedWork.child !== null) {
            switch (finishedWork.child.tag) {
              case HostComponent:
                _instance = getPublicInstance(finishedWork.child.stateNode);
                break;
              case ClassComponent:
                _instance = finishedWork.child.stateNode;
                break;
            }
          }
          commitUpdateQueue(finishedWork, _updateQueue, _instance, committedExpirationTime);
        }
        return;
      }
    case HostComponent:
      {
        var _instance2 = finishedWork.stateNode;

        // Renderers may schedule work to be done after host components are mounted
        // (eg DOM renderer may schedule auto-focus for inputs and form controls).
        // These effects should only be committed when components are first mounted,
        // aka when there is no current/alternate.
        if (current$$1 === null && finishedWork.effectTag & Update) {
          var type = finishedWork.type;
          var props = finishedWork.memoizedProps;
          commitMount(_instance2, type, props, finishedWork);
        }

        return;
      }
    case HostText:
      {
        // We have no life-cycles associated with text.
        return;
      }
    case HostPortal:
      {
        // We have no life-cycles associated with portals.
        return;
      }
    case Profiler:
      {
        if (enableProfilerTimer) {
          var onRender = finishedWork.memoizedProps.onRender;

          if (enableSchedulerTracing) {
            onRender(finishedWork.memoizedProps.id, current$$1 === null ? 'mount' : 'update', finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, getCommitTime(), finishedRoot.memoizedInteractions);
          } else {
            onRender(finishedWork.memoizedProps.id, current$$1 === null ? 'mount' : 'update', finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, getCommitTime());
          }
        }
        return;
      }
    case SuspenseComponent:
      break;
    case IncompleteClassComponent:
      break;
    default:
      {
        invariant(false, 'This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.');
      }
  }
}

function hideOrUnhideAllChildren(finishedWork, isHidden) {
  if (supportsMutation) {
    // We only have the top Fiber that was inserted but we need to recurse down its
    var node = finishedWork;
    while (true) {
      if (node.tag === HostComponent) {
        var instance = node.stateNode;
        if (isHidden) {
          hideInstance(instance);
        } else {
          unhideInstance(node.stateNode, node.memoizedProps);
        }
      } else if (node.tag === HostText) {
        var _instance3 = node.stateNode;
        if (isHidden) {
          hideTextInstance(_instance3);
        } else {
          unhideTextInstance(_instance3, node.memoizedProps);
        }
      } else if (node.tag === SuspenseComponent && node.memoizedState !== null) {
        // Found a nested Suspense component that timed out. Skip over the
        var fallbackChildFragment = node.child.sibling;
        fallbackChildFragment.return = node;
        node = fallbackChildFragment;
        continue;
      } else if (node.child !== null) {
        node.child.return = node;
        node = node.child;
        continue;
      }
      if (node === finishedWork) {
        return;
      }
      while (node.sibling === null) {
        if (node.return === null || node.return === finishedWork) {
          return;
        }
        node = node.return;
      }
      node.sibling.return = node.return;
      node = node.sibling;
    }
  }
}

function commitAttachRef(finishedWork) {
  var ref = finishedWork.ref;
  if (ref !== null) {
    var instance = finishedWork.stateNode;
    var instanceToUse = void 0;
    switch (finishedWork.tag) {
      case HostComponent:
        instanceToUse = getPublicInstance(instance);
        break;
      default:
        instanceToUse = instance;
    }
    if (typeof ref === 'function') {
      ref(instanceToUse);
    } else {
      {
        if (!ref.hasOwnProperty('current')) {
          warningWithoutStack$1(false, 'Unexpected ref object provided for %s. ' + 'Use either a ref-setter function or React.createRef().%s', getComponentName(finishedWork.type), getStackByFiberInDevAndProd(finishedWork));
        }
      }

      ref.current = instanceToUse;
    }
  }
}

function commitDetachRef(current$$1) {
  var currentRef = current$$1.ref;
  if (currentRef !== null) {
    if (typeof currentRef === 'function') {
      currentRef(null);
    } else {
      currentRef.current = null;
    }
  }
}

// User-originating errors (lifecycles and refs) should not interrupt
// deletion, so don't let them throw. Host-originating errors should
// interrupt deletion, so it's okay
function commitUnmount(current$$1) {
  onCommitUnmount(current$$1);

  switch (current$$1.tag) {
    case FunctionComponent:
    case ForwardRef:
    case MemoComponent:
    case SimpleMemoComponent:
      {
        var updateQueue = current$$1.updateQueue;
        if (updateQueue !== null) {
          var lastEffect = updateQueue.lastEffect;
          if (lastEffect !== null) {
            var firstEffect = lastEffect.next;
            var effect = firstEffect;
            do {
              var destroy = effect.destroy;
              if (destroy !== undefined) {
                safelyCallDestroy(current$$1, destroy);
              }
              effect = effect.next;
            } while (effect !== firstEffect);
          }
        }
        break;
      }
    case ClassComponent:
      {
        safelyDetachRef(current$$1);
        var instance = current$$1.stateNode;
        if (typeof instance.componentWillUnmount === 'function') {
          safelyCallComponentWillUnmount(current$$1, instance);
        }
        return;
      }
    case HostComponent:
      {
        safelyDetachRef(current$$1);
        return;
      }
    case HostPortal:
      {
        // TODO: this is recursive.
        // We are also not using this parent because
        // the portal will get pushed immediately.
        if (supportsMutation) {
          unmountHostComponents(current$$1);
        } else if (supportsPersistence) {
          emptyPortalContainer(current$$1);
        }
        return;
      }
  }
}

function commitNestedUnmounts(root) {
  // While we're inside a removed host node we don't want to call
  // removeChild on the inner nodes because they're removed by the top
  // call anyway. We also want to call componentWillUnmount on all
  // composites before this host node is removed from the tree. Therefore
  var node = root;
  while (true) {
    commitUnmount(node);
    // Visit children because they may contain more composite or host nodes.
    // Skip portals because commitUnmount() currently visits them recursively.
    if (node.child !== null && (
    // If we use mutation we drill down into portals using commitUnmount above.
    // If we don't use mutation we drill down into portals here instead.
    !supportsMutation || node.tag !== HostPortal)) {
      node.child.return = node;
      node = node.child;
      continue;
    }
    if (node === root) {
      return;
    }
    while (node.sibling === null) {
      if (node.return === null || node.return === root) {
        return;
      }
      node = node.return;
    }
    node.sibling.return = node.return;
    node = node.sibling;
  }
}

function detachFiber(current$$1) {
  // Cut off the return pointers to disconnect it from the tree. Ideally, we
  // should clear the child pointer of the parent alternate to let this
  // get GC:ed but we don't know which for sure which parent is the current
  // one so we'll settle for GC:ing the subtree of this child. This child
  // itself will be GC:ed when the parent updates the next time.
  current$$1.return = null;
  current$$1.child = null;
  current$$1.memoizedState = null;
  current$$1.updateQueue = null;
  var alternate = current$$1.alternate;
  if (alternate !== null) {
    alternate.return = null;
    alternate.child = null;
    alternate.memoizedState = null;
    alternate.updateQueue = null;
  }
}

function emptyPortalContainer(current$$1) {
  if (!supportsPersistence) {
    return;
  }

  var portal = current$$1.stateNode;
  var containerInfo = portal.containerInfo;

  var emptyChildSet = createContainerChildSet(containerInfo);
  replaceContainerChildren(containerInfo, emptyChildSet);
}

function commitContainer(finishedWork) {
  if (!supportsPersistence) {
    return;
  }

  switch (finishedWork.tag) {
    case ClassComponent:
      {
        return;
      }
    case HostComponent:
      {
        return;
      }
    case HostText:
      {
        return;
      }
    case HostRoot:
    case HostPortal:
      {
        var portalOrRoot = finishedWork.stateNode;
        var containerInfo = portalOrRoot.containerInfo,
            _pendingChildren = portalOrRoot.pendingChildren;

        replaceContainerChildren(containerInfo, _pendingChildren);
        return;
      }
    default:
      {
        invariant(false, 'This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.');
      }
  }
}

function getHostParentFiber(fiber) {
  var parent = fiber.return;
  while (parent !== null) {
    if (isHostParent(parent)) {
      return parent;
    }
    parent = parent.return;
  }
  invariant(false, 'Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue.');
}

function isHostParent(fiber) {
  return fiber.tag === HostComponent || fiber.tag === HostRoot || fiber.tag === HostPortal;
}

function getHostSibling(fiber) {
  // We're going to search forward into the tree until we find a sibling host
  // node. Unfortunately, if multiple insertions are done in a row we have to
  // search past them. This leads to exponential search for the next sibling.
  var node = fiber;
  siblings: while (true) {
    // If we didn't find anything, let's try the next sibling.
    while (node.sibling === null) {
      if (node.return === null || isHostParent(node.return)) {
        // If we pop out of the root or hit the parent the fiber we are the
        // last sibling.
        return null;
      }
      node = node.return;
    }
    node.sibling.return = node.return;
    node = node.sibling;
    while (node.tag !== HostComponent && node.tag !== HostText && node.tag !== DehydratedSuspenseComponent) {
      // If it is not host node and, we might have a host node inside it.
      // Try to search down until we find one.
      if (node.effectTag & Placement) {
        // If we don't have a child, try the siblings instead.
        continue siblings;
      }
      // If we don't have a child, try the siblings instead.
      // We also skip portals because they are not part of this host tree.
      if (node.child === null || node.tag === HostPortal) {
        continue siblings;
      } else {
        node.child.return = node;
        node = node.child;
      }
    }
    // Check if this host node is stable or about to be placed.
    if (!(node.effectTag & Placement)) {
      // Found it!
      return node.stateNode;
    }
  }
}

function commitPlacement(finishedWork) {
  if (!supportsMutation) {
    return;
  }

  // Recursively insert all host nodes into the parent.
  var parentFiber = getHostParentFiber(finishedWork);

  // Note: these two variables *must* always be updated together.
  var parent = void 0;
  var isContainer = void 0;

  switch (parentFiber.tag) {
    case HostComponent:
      parent = parentFiber.stateNode;
      isContainer = false;
      break;
    case HostRoot:
      parent = parentFiber.stateNode.containerInfo;
      isContainer = true;
      break;
    case HostPortal:
      parent = parentFiber.stateNode.containerInfo;
      isContainer = true;
      break;
    default:
      invariant(false, 'Invalid host parent fiber. This error is likely caused by a bug in React. Please file an issue.');
  }
  if (parentFiber.effectTag & ContentReset) {
    // Reset the text content of the parent before doing any insertions
    resetTextContent(parent);
    // Clear ContentReset from the effect tag
    parentFiber.effectTag &= ~ContentReset;
  }

  var before = getHostSibling(finishedWork);
  // We only have the top Fiber that was inserted but we need to recurse down its
  // children to find all the terminal nodes.
  var node = finishedWork;
  while (true) {
    if (node.tag === HostComponent || node.tag === HostText) {
      if (before) {
        if (isContainer) {
          insertInContainerBefore(parent, node.stateNode, before);
        } else {
          insertBefore(parent, node.stateNode, before);
        }
      } else {
        if (isContainer) {
          appendChildToContainer(parent, node.stateNode);
        } else {
          appendChild(parent, node.stateNode);
        }
      }
    } else if (node.tag === HostPortal) {
      // If the insertion itself is a portal, then we don't want to traverse
      // down its children. Instead, we'll get insertions from each child in
      // the portal directly.
    } else if (node.child !== null) {
      node.child.return = node;
      node = node.child;
      continue;
    }
    if (node === finishedWork) {
      return;
    }
    while (node.sibling === null) {
      if (node.return === null || node.return === finishedWork) {
        return;
      }
      node = node.return;
    }
    node.sibling.return = node.return;
    node = node.sibling;
  }
}

function unmountHostComponents(current$$1) {
  // We only have the top Fiber that was deleted but we need to recurse down its
  var node = current$$1;

  // Each iteration, currentParent is populated with node's host parent if not
  // currentParentIsValid.
  var currentParentIsValid = false;

  // Note: these two variables *must* always be updated together.
  var currentParent = void 0;
  var currentParentIsContainer = void 0;

  while (true) {
    if (!currentParentIsValid) {
      var parent = node.return;
      findParent: while (true) {
        !(parent !== null) ? invariant(false, 'Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue.') : void 0;
        switch (parent.tag) {
          case HostComponent:
            currentParent = parent.stateNode;
            currentParentIsContainer = false;
            break findParent;
          case HostRoot:
            currentParent = parent.stateNode.containerInfo;
            currentParentIsContainer = true;
            break findParent;
          case HostPortal:
            currentParent = parent.stateNode.containerInfo;
            currentParentIsContainer = true;
            break findParent;
        }
        parent = parent.return;
      }
      currentParentIsValid = true;
    }

    if (node.tag === HostComponent || node.tag === HostText) {
      commitNestedUnmounts(node);
      // After all the children have unmounted, it is now safe to remove the
      // node from the tree.
      if (currentParentIsContainer) {
        removeChildFromContainer(currentParent, node.stateNode);
      } else {
        removeChild(currentParent, node.stateNode);
      }
      // Don't visit children because we already visited them.
    } else if (enableSuspenseServerRenderer && node.tag === DehydratedSuspenseComponent) {
      // Delete the dehydrated suspense boundary and all of its content.
      if (currentParentIsContainer) {
        clearSuspenseBoundaryFromContainer(currentParent, node.stateNode);
      } else {
        clearSuspenseBoundary(currentParent, node.stateNode);
      }
    } else if (node.tag === HostPortal) {
      if (node.child !== null) {
        // When we go into a portal, it becomes the parent to remove from.
        // We will reassign it back when we pop the portal on the way up.
        currentParent = node.stateNode.containerInfo;
        currentParentIsContainer = true;
        // Visit children because portals might contain host components.
        node.child.return = node;
        node = node.child;
        continue;
      }
    } else {
      commitUnmount(node);
      // Visit children because we may find more host components below.
      if (node.child !== null) {
        node.child.return = node;
        node = node.child;
        continue;
      }
    }
    if (node === current$$1) {
      return;
    }
    while (node.sibling === null) {
      if (node.return === null || node.return === current$$1) {
        return;
      }
      node = node.return;
      if (node.tag === HostPortal) {
        // When we go out of the portal, we need to restore the parent.
        // Since we don't keep a stack of them, we will search for it.
        currentParentIsValid = false;
      }
    }
    node.sibling.return = node.return;
    node = node.sibling;
  }
}

function commitDeletion(current$$1) {
  if (supportsMutation) {
    // Recursively delete all host nodes from the parent.
    // Detach refs and call componentWillUnmount() on the whole subtree.
    unmountHostComponents(current$$1);
  } else {
    // Detach refs and call componentWillUnmount() on the whole subtree.
    commitNestedUnmounts(current$$1);
  }
  detachFiber(current$$1);
}

function commitWork(current$$1, finishedWork) {
  if (!supportsMutation) {
    switch (finishedWork.tag) {
      case FunctionComponent:
      case ForwardRef:
      case MemoComponent:
      case SimpleMemoComponent:
        {
          // Note: We currently never use MountMutation, but useLayout uses
          // UnmountMutation.
          commitHookEffectList(UnmountMutation, MountMutation, finishedWork);
          return;
        }
    }

    commitContainer(finishedWork);
    return;
  }

  switch (finishedWork.tag) {
    case FunctionComponent:
    case ForwardRef:
    case MemoComponent:
    case SimpleMemoComponent:
      {
        // Note: We currently never use MountMutation, but useLayout uses
        // UnmountMutation.
        commitHookEffectList(UnmountMutation, MountMutation, finishedWork);
        return;
      }
    case ClassComponent:
      {
        return;
      }
    case HostComponent:
      {
        var instance = finishedWork.stateNode;
        if (instance != null) {
          // Commit the work prepared earlier.
          var newProps = finishedWork.memoizedProps;
          // For hydration we reuse the update path but we treat the oldProps
          // as the newProps. The updatePayload will contain the real change in
          // this case.
          var oldProps = current$$1 !== null ? current$$1.memoizedProps : newProps;
          var type = finishedWork.type;
          // TODO: Type the updateQueue to be specific to host components.
          var updatePayload = finishedWork.updateQueue;
          finishedWork.updateQueue = null;
          if (updatePayload !== null) {
            commitUpdate(instance, updatePayload, type, oldProps, newProps, finishedWork);
          }
        }
        return;
      }
    case HostText:
      {
        !(finishedWork.stateNode !== null) ? invariant(false, 'This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue.') : void 0;
        var textInstance = finishedWork.stateNode;
        var newText = finishedWork.memoizedProps;
        // For hydration we reuse the update path but we treat the oldProps
        // as the newProps. The updatePayload will contain the real change in
        // this case.
        var oldText = current$$1 !== null ? current$$1.memoizedProps : newText;
        commitTextUpdate(textInstance, oldText, newText);
        return;
      }
    case HostRoot:
      {
        return;
      }
    case Profiler:
      {
        return;
      }
    case SuspenseComponent:
      {
        var newState = finishedWork.memoizedState;

        var newDidTimeout = void 0;
        var primaryChildParent = finishedWork;
        if (newState === null) {
          newDidTimeout = false;
        } else {
          newDidTimeout = true;
          primaryChildParent = finishedWork.child;
          if (newState.timedOutAt === NoWork) {
            // If the children had not already timed out, record the time.
            // This is used to compute the elapsed time during subsequent
            // attempts to render the children.
            newState.timedOutAt = requestCurrentTime();
          }
        }

        if (primaryChildParent !== null) {
          hideOrUnhideAllChildren(primaryChildParent, newDidTimeout);
        }

        // If this boundary just timed out, then it will have a set of thenables.
        // For each thenable, attach a listener so that when it resolves, React
        // attempts to re-render the boundary in the primary (pre-timeout) state.
        var thenables = finishedWork.updateQueue;
        if (thenables !== null) {
          finishedWork.updateQueue = null;
          var retryCache = finishedWork.stateNode;
          if (retryCache === null) {
            retryCache = finishedWork.stateNode = new PossiblyWeakSet$1();
          }
          thenables.forEach(function (thenable) {
            // Memoize using the boundary fiber to prevent redundant listeners.
            var retry = retryTimedOutBoundary.bind(null, finishedWork, thenable);
            if (enableSchedulerTracing) {
              retry = tracing.unstable_wrap(retry);
            }
            if (!retryCache.has(thenable)) {
              retryCache.add(thenable);
              thenable.then(retry, retry);
            }
          });
        }

        return;
      }
    case IncompleteClassComponent:
      {
        return;
      }
    default:
      {
        invariant(false, 'This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.');
      }
  }
}

function commitResetTextContent(current$$1) {
  if (!supportsMutation) {
    return;
  }
  resetTextContent(current$$1.stateNode);
}

var PossiblyWeakSet = typeof WeakSet === 'function' ? WeakSet : Set;
var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map;

function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
  var update = createUpdate(expirationTime);
  // Unmount the root by rendering null.
  update.tag = CaptureUpdate;
  // Caution: React DevTools currently depends on this property
  // being called "element".
  update.payload = { element: null };
  var error = errorInfo.value;
  update.callback = function () {
    onUncaughtError(error);
    logError(fiber, errorInfo);
  };
  return update;
}

function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
  var update = createUpdate(expirationTime);
  update.tag = CaptureUpdate;
  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
  if (typeof getDerivedStateFromError === 'function') {
    var error = errorInfo.value;
    update.payload = function () {
      return getDerivedStateFromError(error);
    };
  }

  var inst = fiber.stateNode;
  if (inst !== null && typeof inst.componentDidCatch === 'function') {
    update.callback = function callback() {
      if (typeof getDerivedStateFromError !== 'function') {
        // To preserve the preexisting retry behavior of error boundaries,
        // we keep track of which ones already failed during this batch.
        // This gets reset before we yield back to the browser.
        // TODO: Warn in strict mode if getDerivedStateFromError is
        // not defined.
        markLegacyErrorBoundaryAsFailed(this);
      }
      var error = errorInfo.value;
      var stack = errorInfo.stack;
      logError(fiber, errorInfo);
      this.componentDidCatch(error, {
        componentStack: stack !== null ? stack : ''
      });
      {
        if (typeof getDerivedStateFromError !== 'function') {
          // If componentDidCatch is the only error boundary method defined,
          // then it needs to call setState to recover from errors.
          // If no state update is scheduled then the boundary will swallow the error.
          !(fiber.expirationTime === Sync) ? warningWithoutStack$1(false, '%s: Error boundaries should implement getDerivedStateFromError(). ' + 'In that method, return a state update to display an error message or fallback UI.', getComponentName(fiber.type) || 'Unknown') : void 0;
        }
      }
    };
  }
  return update;
}

function attachPingListener(root, renderExpirationTime, thenable) {
  // Attach a listener to the promise to "ping" the root and retry. But
  // only if one does not already exist for the current render expiration
  // time (which acts like a "thread ID" here).
  var pingCache = root.pingCache;
  var threadIDs = void 0;
  if (pingCache === null) {
    pingCache = root.pingCache = new PossiblyWeakMap();
    threadIDs = new Set();
    pingCache.set(thenable, threadIDs);
  } else {
    threadIDs = pingCache.get(thenable);
    if (threadIDs === undefined) {
      threadIDs = new Set();
      pingCache.set(thenable, threadIDs);
    }
  }
  if (!threadIDs.has(renderExpirationTime)) {
    // Memoize using the thread ID to prevent redundant listeners.
    threadIDs.add(renderExpirationTime);
    var ping = pingSuspendedRoot.bind(null, root, thenable, renderExpirationTime);
    if (enableSchedulerTracing) {
      ping = tracing.unstable_wrap(ping);
    }
    thenable.then(ping, ping);
  }
}

function throwException(root, returnFiber, sourceFiber, value, renderExpirationTime) {
  // The source fiber did not complete.
  sourceFiber.effectTag |= Incomplete;
  // Its effect list is no longer valid.
  sourceFiber.firstEffect = sourceFiber.lastEffect = null;

  if (value !== null && typeof value === 'object' && typeof value.then === 'function') {
    // This is a thenable.
    var thenable = value;

    // Find the earliest timeout threshold of all the placeholders in the
    // ancestor path. We could avoid this traversal by storing the thresholds on
    // the stack, but we choose not to because we only hit this path if we're
    // IO-bound (i.e. if something suspends). Whereas the stack is used even in
    // the non-IO- bound case.
    var _workInProgress = returnFiber;
    var earliestTimeoutMs = -1;
    var startTimeMs = -1;
    do {
      if (_workInProgress.tag === SuspenseComponent) {
        var current$$1 = _workInProgress.alternate;
        if (current$$1 !== null) {
          var currentState = current$$1.memoizedState;
          if (currentState !== null) {
            // Reached a boundary that already timed out. Do not search
            // any further.
            var timedOutAt = currentState.timedOutAt;
            startTimeMs = expirationTimeToMs(timedOutAt);
            // Do not search any further.
            break;
          }
        }
        var timeoutPropMs = _workInProgress.pendingProps.maxDuration;
        if (typeof timeoutPropMs === 'number') {
          if (timeoutPropMs <= 0) {
            earliestTimeoutMs = 0;
          } else if (earliestTimeoutMs === -1 || timeoutPropMs < earliestTimeoutMs) {
            earliestTimeoutMs = timeoutPropMs;
          }
        }
      }
      // If there is a DehydratedSuspenseComponent we don't have to do anything because
      // if something suspends inside it, we will simply leave that as dehydrated. It
      // will never timeout.
      _workInProgress = _workInProgress.return;
    } while (_workInProgress !== null);

    // Schedule the nearest Suspense to re-render the timed out view.
    _workInProgress = returnFiber;
    do {
      if (_workInProgress.tag === SuspenseComponent && shouldCaptureSuspense(_workInProgress)) {
        // Found the nearest boundary.

        // Stash the promise on the boundary fiber. If the boundary times out, we'll
        var thenables = _workInProgress.updateQueue;
        if (thenables === null) {
          var updateQueue = new Set();
          updateQueue.add(thenable);
          _workInProgress.updateQueue = updateQueue;
        } else {
          thenables.add(thenable);
        }

        // If the boundary is outside of concurrent mode, we should *not*
        // suspend the commit. Pretend as if the suspended component rendered
        // null and keep rendering. In the commit phase, we'll schedule a
        // subsequent synchronous update to re-render the Suspense.
        //
        // Note: It doesn't matter whether the component that suspended was
        // inside a concurrent mode tree. If the Suspense is outside of it, we
        // should *not* suspend the commit.
        if ((_workInProgress.mode & ConcurrentMode) === NoEffect) {
          _workInProgress.effectTag |= DidCapture;

          // We're going to commit this fiber even though it didn't complete.
          // But we shouldn't call any lifecycle methods or callbacks. Remove
          // all lifecycle effect tags.
          sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);

          if (sourceFiber.tag === ClassComponent) {
            var currentSourceFiber = sourceFiber.alternate;
            if (currentSourceFiber === null) {
              // This is a new mount. Change the tag so it's not mistaken for a
              // completed class component. For example, we should not call
              // componentWillUnmount if it is deleted.
              sourceFiber.tag = IncompleteClassComponent;
            } else {
              // When we try rendering again, we should not reuse the current fiber,
              // since it's known to be in an inconsistent state. Use a force updte to
              // prevent a bail out.
              var update = createUpdate(Sync);
              update.tag = ForceUpdate;
              enqueueUpdate(sourceFiber, update);
            }
          }

          // The source fiber did not complete. Mark it with Sync priority to
          // indicate that it still has pending work.
          sourceFiber.expirationTime = Sync;

          // Exit without suspending.
          return;
        }

        // Confirmed that the boundary is in a concurrent mode tree. Continue
        // with the normal suspend path.

        attachPingListener(root, renderExpirationTime, thenable);

        var absoluteTimeoutMs = void 0;
        if (earliestTimeoutMs === -1) {
          // If no explicit threshold is given, default to an arbitrarily large
          // value. The actual size doesn't matter because the threshold for the
          // whole tree will be clamped to the expiration time.
          absoluteTimeoutMs = maxSigned31BitInt;
        } else {
          if (startTimeMs === -1) {
            // This suspend happened outside of any already timed-out
            // placeholders. We don't know exactly when the update was
            // scheduled, but we can infer an approximate start time from the
            // expiration time. First, find the earliest uncommitted expiration
            // time in the tree, including work that is suspended. Then subtract
            // the offset used to compute an async update's expiration time.
            // This will cause high priority (interactive) work to expire
            // earlier than necessary, but we can account for this by adjusting
            // for the Just Noticeable Difference.
            var earliestExpirationTime = findEarliestOutstandingPriorityLevel(root, renderExpirationTime);
            var earliestExpirationTimeMs = expirationTimeToMs(earliestExpirationTime);
            startTimeMs = earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
          }
          absoluteTimeoutMs = startTimeMs + earliestTimeoutMs;
        }

        // Mark the earliest timeout in the suspended fiber's ancestor path.
        // After completing the root, we'll take the largest of all the
        // suspended fiber's timeouts and use it to compute a timeout for the
        // whole tree.
        renderDidSuspend(root, absoluteTimeoutMs, renderExpirationTime);

        _workInProgress.effectTag |= ShouldCapture;
        _workInProgress.expirationTime = renderExpirationTime;
        return;
      } else if (enableSuspenseServerRenderer && _workInProgress.tag === DehydratedSuspenseComponent) {
        attachPingListener(root, renderExpirationTime, thenable);

        // Since we already have a current fiber, we can eagerly add a retry listener.
        var retryCache = _workInProgress.memoizedState;
        if (retryCache === null) {
          retryCache = _workInProgress.memoizedState = new PossiblyWeakSet();
          var _current = _workInProgress.alternate;
          !_current ? invariant(false, 'A dehydrated suspense boundary must commit before trying to render. This is probably a bug in React.') : void 0;
          _current.memoizedState = retryCache;
        }
        // Memoize using the boundary fiber to prevent redundant listeners.
        if (!retryCache.has(thenable)) {
          retryCache.add(thenable);
          var retry = retryTimedOutBoundary.bind(null, _workInProgress, thenable);
          if (enableSchedulerTracing) {
            retry = tracing.unstable_wrap(retry);
          }
          thenable.then(retry, retry);
        }
        _workInProgress.effectTag |= ShouldCapture;
        _workInProgress.expirationTime = renderExpirationTime;
        return;
      }
      // This boundary already captured during this render. Continue to the next
      // boundary.
      _workInProgress = _workInProgress.return;
    } while (_workInProgress !== null);
    // No boundary was found. Fallthrough to error mode.
    // TODO: Use invariant so the message is stripped in prod?
    value = new Error((getComponentName(sourceFiber.type) || 'A React component') + ' suspended while rendering, but no fallback UI was specified.\n' + '\n' + 'Add a <Suspense fallback=...> component higher in the tree to ' + 'provide a loading indicator or placeholder to display.' + getStackByFiberInDevAndProd(sourceFiber));
  }

  // We didn't find a boundary that could handle this type of exception. Start
  // over and traverse parent path again, this time treating the exception
  // as an error.
  renderDidError();
  value = createCapturedValue(value, sourceFiber);
  var workInProgress = returnFiber;
  do {
    switch (workInProgress.tag) {
      case HostRoot:
        {
          var _errorInfo = value;
          workInProgress.effectTag |= ShouldCapture;
          workInProgress.expirationTime = renderExpirationTime;
          var _update = createRootErrorUpdate(workInProgress, _errorInfo, renderExpirationTime);
          enqueueCapturedUpdate(workInProgress, _update);
          return;
        }
      case ClassComponent:
        // Capture and retry
        var errorInfo = value;
        var ctor = workInProgress.type;
        var instance = workInProgress.stateNode;
        if ((workInProgress.effectTag & DidCapture) === NoEffect && (typeof ctor.getDerivedStateFromError === 'function' || instance !== null && typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance))) {
          workInProgress.effectTag |= ShouldCapture;
          workInProgress.expirationTime = renderExpirationTime;
          // Schedule the error boundary to re-render using updated state
          var _update2 = createClassErrorUpdate(workInProgress, errorInfo, renderExpirationTime);
          enqueueCapturedUpdate(workInProgress, _update2);
          return;
        }
        break;
      default:
        break;
    }
    workInProgress = workInProgress.return;
  } while (workInProgress !== null);
}

function unwindWork(workInProgress, renderExpirationTime) {
  switch (workInProgress.tag) {
    case ClassComponent:
      {
        var Component = workInProgress.type;
        if (isContextProvider(Component)) {
          popContext(workInProgress);
        }
        var effectTag = workInProgress.effectTag;
        if (effectTag & ShouldCapture) {
          workInProgress.effectTag = effectTag & ~ShouldCapture | DidCapture;
          return workInProgress;
        }
        return null;
      }
    case HostRoot:
      {
        popHostContainer(workInProgress);
        popTopLevelContextObject(workInProgress);
        var _effectTag = workInProgress.effectTag;
        !((_effectTag & DidCapture) === NoEffect) ? invariant(false, 'The root failed to unmount after an error. This is likely a bug in React. Please file an issue.') : void 0;
        workInProgress.effectTag = _effectTag & ~ShouldCapture | DidCapture;
        return workInProgress;
      }
    case HostComponent:
      {
        // TODO: popHydrationState
        popHostContext(workInProgress);
        return null;
      }
    case SuspenseComponent:
      {
        var _effectTag2 = workInProgress.effectTag;
        if (_effectTag2 & ShouldCapture) {
          workInProgress.effectTag = _effectTag2 & ~ShouldCapture | DidCapture;
          // Captured a suspense effect. Re-render the boundary.
          return workInProgress;
        }
        return null;
      }
    case DehydratedSuspenseComponent:
      {
        if (enableSuspenseServerRenderer) {
          // TODO: popHydrationState
          var _effectTag3 = workInProgress.effectTag;
          if (_effectTag3 & ShouldCapture) {
            workInProgress.effectTag = _effectTag3 & ~ShouldCapture | DidCapture;
            // Captured a suspense effect. Re-render the boundary.
            return workInProgress;
          }
        }
        return null;
      }
    case HostPortal:
      popHostContainer(workInProgress);
      return null;
    case ContextProvider:
      popProvider(workInProgress);
      return null;
    default:
      return null;
  }
}

function unwindInterruptedWork(interruptedWork) {
  switch (interruptedWork.tag) {
    case ClassComponent:
      {
        var childContextTypes = interruptedWork.type.childContextTypes;
        if (childContextTypes !== null && childContextTypes !== undefined) {
          popContext(interruptedWork);
        }
        break;
      }
    case HostRoot:
      {
        popHostContainer(interruptedWork);
        popTopLevelContextObject(interruptedWork);
        break;
      }
    case HostComponent:
      {
        popHostContext(interruptedWork);
        break;
      }
    case HostPortal:
      popHostContainer(interruptedWork);
      break;
    case ContextProvider:
      popProvider(interruptedWork);
      break;
    default:
      break;
  }
}

var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;
var ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner;


var didWarnAboutStateTransition = void 0;
var didWarnSetStateChildContext = void 0;
var warnAboutUpdateOnUnmounted = void 0;
var warnAboutInvalidUpdates = void 0;

if (enableSchedulerTracing) {
  // Provide explicit error message when production+profiling bundle of e.g. react-dom
  // is used with production (non-profiling) bundle of scheduler/tracing
  !(tracing.__interactionsRef != null && tracing.__interactionsRef.current != null) ? invariant(false, 'It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling') : void 0;
}

{
  didWarnAboutStateTransition = false;
  didWarnSetStateChildContext = false;
  var didWarnStateUpdateForUnmountedComponent = {};

  warnAboutUpdateOnUnmounted = function (fiber, isClass) {
    // We show the whole stack but dedupe on the top component's name because
    // the problematic code almost always lies inside that component.
    var componentName = getComponentName(fiber.type) || 'ReactComponent';
    if (didWarnStateUpdateForUnmountedComponent[componentName]) {
      return;
    }
    warningWithoutStack$1(false, "Can't perform a React state update on an unmounted component. This " + 'is a no-op, but it indicates a memory leak in your application. To ' + 'fix, cancel all subscriptions and asynchronous tasks in %s.%s', isClass ? 'the componentWillUnmount method' : 'a useEffect cleanup function', getStackByFiberInDevAndProd(fiber));
    didWarnStateUpdateForUnmountedComponent[componentName] = true;
  };

  warnAboutInvalidUpdates = function (instance) {
    switch (phase) {
      case 'getChildContext':
        if (didWarnSetStateChildContext) {
          return;
        }
        warningWithoutStack$1(false, 'setState(...): Cannot call setState() inside getChildContext()');
        didWarnSetStateChildContext = true;
        break;
      case 'render':
        if (didWarnAboutStateTransition) {
          return;
        }
        warningWithoutStack$1(false, 'Cannot update during an existing state transition (such as within ' + '`render`). Render methods should be a pure function of props and state.');
        didWarnAboutStateTransition = true;
        break;
    }
  };
}

// Used to ensure computeUniqueAsyncExpiration is monotonically decreasing.
var lastUniqueAsyncExpiration = Sync - 1;

var isWorking = false;

// The next work in progress fiber that we're currently working on.
var nextUnitOfWork = null;
var nextRoot = null;
// The time at which we're currently rendering work.
var nextRenderExpirationTime = NoWork;
var nextLatestAbsoluteTimeoutMs = -1;
var nextRenderDidError = false;

// The next fiber with an effect that we're currently committing.
var nextEffect = null;

var isCommitting$1 = false;
var rootWithPendingPassiveEffects = null;
var passiveEffectCallbackHandle = null;
var passiveEffectCallback = null;

var legacyErrorBoundariesThatAlreadyFailed = null;

// Used for performance tracking.
var interruptedBy = null;

var stashedWorkInProgressProperties = void 0;
var replayUnitOfWork = void 0;
var mayReplayFailedUnitOfWork = void 0;
var isReplayingFailedUnitOfWork = void 0;
var originalReplayError = void 0;
var rethrowOriginalError = void 0;
if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
  stashedWorkInProgressProperties = null;
  mayReplayFailedUnitOfWork = true;
  isReplayingFailedUnitOfWork = false;
  originalReplayError = null;
  replayUnitOfWork = function (failedUnitOfWork, thrownValue, isYieldy) {
    if (thrownValue !== null && typeof thrownValue === 'object' && typeof thrownValue.then === 'function') {
      // Don't replay promises. Treat everything else like an error.
      // TODO: Need to figure out a different strategy if/when we add
      // support for catching other types.
      return;
    }

    // Restore the original state of the work-in-progress
    if (stashedWorkInProgressProperties === null) {
      // This should never happen. Don't throw because this code is DEV-only.
      warningWithoutStack$1(false, 'Could not replay rendering after an error. This is likely a bug in React. ' + 'Please file an issue.');
      return;
    }
    assignFiberPropertiesInDEV(failedUnitOfWork, stashedWorkInProgressProperties);

    switch (failedUnitOfWork.tag) {
      case HostRoot:
        popHostContainer(failedUnitOfWork);
        popTopLevelContextObject(failedUnitOfWork);
        break;
      case HostComponent:
        popHostContext(failedUnitOfWork);
        break;
      case ClassComponent:
        {
          var Component = failedUnitOfWork.type;
          if (isContextProvider(Component)) {
            popContext(failedUnitOfWork);
          }
          break;
        }
      case HostPortal:
        popHostContainer(failedUnitOfWork);
        break;
      case ContextProvider:
        popProvider(failedUnitOfWork);
        break;
    }
    // Replay the begin phase.
    isReplayingFailedUnitOfWork = true;
    originalReplayError = thrownValue;
    invokeGuardedCallback(null, workLoop, null, isYieldy);
    isReplayingFailedUnitOfWork = false;
    originalReplayError = null;
    if (hasCaughtError()) {
      var replayError = clearCaughtError();
      if (replayError != null && thrownValue != null) {
        try {
          // Reading the expando property is intentionally
          // inside `try` because it might be a getter or Proxy.
          if (replayError._suppressLogging) {
            // Also suppress logging for the original error.
            thrownValue._suppressLogging = true;
          }
        } catch (inner) {
          // Ignore.
        }
      }
    } else {
      // If the begin phase did not fail the second time, set this pointer
      // back to the original value.
      nextUnitOfWork = failedUnitOfWork;
    }
  };
  rethrowOriginalError = function () {
    throw originalReplayError;
  };
}

function resetStack() {
  if (nextUnitOfWork !== null) {
    var interruptedWork = nextUnitOfWork.return;
    while (interruptedWork !== null) {
      unwindInterruptedWork(interruptedWork);
      interruptedWork = interruptedWork.return;
    }
  }

  {
    ReactStrictModeWarnings.discardPendingWarnings();
    checkThatStackIsEmpty();
  }

  nextRoot = null;
  nextRenderExpirationTime = NoWork;
  nextLatestAbsoluteTimeoutMs = -1;
  nextRenderDidError = false;
  nextUnitOfWork = null;
}

function commitAllHostEffects() {
  while (nextEffect !== null) {
    {
      setCurrentFiber(nextEffect);
    }
    recordEffect();

    var effectTag = nextEffect.effectTag;

    if (effectTag & ContentReset) {
      commitResetTextContent(nextEffect);
    }

    if (effectTag & Ref) {
      var current$$1 = nextEffect.alternate;
      if (current$$1 !== null) {
        commitDetachRef(current$$1);
      }
    }

    // The following switch statement is only concerned about placement,
    // updates, and deletions. To avoid needing to add a case for every
    // possible bitmap value, we remove the secondary effects from the
    // effect tag and switch on that value.
    var primaryEffectTag = effectTag & (Placement | Update | Deletion);
    switch (primaryEffectTag) {
      case Placement:
        {
          commitPlacement(nextEffect);
          // Clear the "placement" from effect tag so that we know that this is inserted, before
          // any life-cycles like componentDidMount gets called.
          // TODO: findDOMNode doesn't rely on this any more but isMounted
          // does and isMounted is deprecated anyway so we should be able
          // to kill this.
          nextEffect.effectTag &= ~Placement;
          break;
        }
      case PlacementAndUpdate:
        {
          // Placement
          commitPlacement(nextEffect);
          // Clear the "placement" from effect tag so that we know that this is inserted, before
          // any life-cycles like componentDidMount gets called.
          nextEffect.effectTag &= ~Placement;

          // Update
          var _current = nextEffect.alternate;
          commitWork(_current, nextEffect);
          break;
        }
      case Update:
        {
          var _current2 = nextEffect.alternate;
          commitWork(_current2, nextEffect);
          break;
        }
      case Deletion:
        {
          commitDeletion(nextEffect);
          break;
        }
    }
    nextEffect = nextEffect.nextEffect;
  }

  {
    resetCurrentFiber();
  }
}

function commitBeforeMutationLifecycles() {
  while (nextEffect !== null) {
    {
      setCurrentFiber(nextEffect);
    }

    var effectTag = nextEffect.effectTag;
    if (effectTag & Snapshot) {
      recordEffect();
      var current$$1 = nextEffect.alternate;
      commitBeforeMutationLifeCycles(current$$1, nextEffect);
    }

    nextEffect = nextEffect.nextEffect;
  }

  {
    resetCurrentFiber();
  }
}

function commitAllLifeCycles(finishedRoot, committedExpirationTime) {
  {
    ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings();
    ReactStrictModeWarnings.flushLegacyContextWarning();

    if (warnAboutDeprecatedLifecycles) {
      ReactStrictModeWarnings.flushPendingDeprecationWarnings();
    }
  }
  while (nextEffect !== null) {
    {
      setCurrentFiber(nextEffect);
    }
    var effectTag = nextEffect.effectTag;

    if (effectTag & (Update | Callback)) {
      recordEffect();
      var current$$1 = nextEffect.alternate;
      commitLifeCycles(finishedRoot, current$$1, nextEffect, committedExpirationTime);
    }

    if (effectTag & Ref) {
      recordEffect();
      commitAttachRef(nextEffect);
    }

    if (effectTag & Passive) {
      rootWithPendingPassiveEffects = finishedRoot;
    }

    nextEffect = nextEffect.nextEffect;
  }
  {
    resetCurrentFiber();
  }
}

function commitPassiveEffects(root, firstEffect) {
  rootWithPendingPassiveEffects = null;
  passiveEffectCallbackHandle = null;
  passiveEffectCallback = null;

  // Set this to true to prevent re-entrancy
  var previousIsRendering = isRendering;
  isRendering = true;

  var effect = firstEffect;
  do {
    {
      setCurrentFiber(effect);
    }

    if (effect.effectTag & Passive) {
      var didError = false;
      var error = void 0;
      {
        invokeGuardedCallback(null, commitPassiveHookEffects, null, effect);
        if (hasCaughtError()) {
          didError = true;
          error = clearCaughtError();
        }
      }
      if (didError) {
        captureCommitPhaseError(effect, error);
      }
    }
    effect = effect.nextEffect;
  } while (effect !== null);
  {
    resetCurrentFiber();
  }

  isRendering = previousIsRendering;

  // Check if work was scheduled by one of the effects
  var rootExpirationTime = root.expirationTime;
  if (rootExpirationTime !== NoWork) {
    requestWork(root, rootExpirationTime);
  }
  // Flush any sync work that was scheduled by effects
  if (!isBatchingUpdates && !isRendering) {
    performSyncWork();
  }
}

function isAlreadyFailedLegacyErrorBoundary(instance) {
  return legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance);
}

function markLegacyErrorBoundaryAsFailed(instance) {
  if (legacyErrorBoundariesThatAlreadyFailed === null) {
    legacyErrorBoundariesThatAlreadyFailed = new Set([instance]);
  } else {
    legacyErrorBoundariesThatAlreadyFailed.add(instance);
  }
}

function flushPassiveEffects() {
  if (passiveEffectCallbackHandle !== null) {
    cancelPassiveEffects(passiveEffectCallbackHandle);
  }
  if (passiveEffectCallback !== null) {
    // We call the scheduled callback instead of commitPassiveEffects directly
    // to ensure tracing works correctly.
    passiveEffectCallback();
  }
}

function commitRoot(root, finishedWork) {
  isWorking = true;
  isCommitting$1 = true;
  startCommitTimer();

  !(root.current !== finishedWork) ? invariant(false, 'Cannot commit the same tree as before. This is probably a bug related to the return field. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  var committedExpirationTime = root.pendingCommitExpirationTime;
  !(committedExpirationTime !== NoWork) ? invariant(false, 'Cannot commit an incomplete root. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  root.pendingCommitExpirationTime = NoWork;

  // Update the pending priority levels to account for the work that we are
  // about to commit. This needs to happen before calling the lifecycles, since
  // they may schedule additional updates.
  var updateExpirationTimeBeforeCommit = finishedWork.expirationTime;
  var childExpirationTimeBeforeCommit = finishedWork.childExpirationTime;
  var earliestRemainingTimeBeforeCommit = childExpirationTimeBeforeCommit > updateExpirationTimeBeforeCommit ? childExpirationTimeBeforeCommit : updateExpirationTimeBeforeCommit;
  markCommittedPriorityLevels(root, earliestRemainingTimeBeforeCommit);

  var prevInteractions = null;
  if (enableSchedulerTracing) {
    // Restore any pending interactions at this point,
    // So that cascading work triggered during the render phase will be accounted for.
    prevInteractions = tracing.__interactionsRef.current;
    tracing.__interactionsRef.current = root.memoizedInteractions;
  }

  // Reset this to null before calling lifecycles
  ReactCurrentOwner$2.current = null;

  var firstEffect = void 0;
  if (finishedWork.effectTag > PerformedWork) {
    // A fiber's effect list consists only of its children, not itself. So if
    // the root has an effect, we need to add it to the end of the list. The
    // resulting list is the set that would belong to the root's parent, if
    // it had one; that is, all the effects in the tree including the root.
    if (finishedWork.lastEffect !== null) {
      finishedWork.lastEffect.nextEffect = finishedWork;
      firstEffect = finishedWork.firstEffect;
    } else {
      firstEffect = finishedWork;
    }
  } else {
    // There is no effect on the root.
    firstEffect = finishedWork.firstEffect;
  }

  prepareForCommit(root.containerInfo);

  // Invoke instances of getSnapshotBeforeUpdate before mutation.
  nextEffect = firstEffect;
  startCommitSnapshotEffectsTimer();
  while (nextEffect !== null) {
    var didError = false;
    var error = void 0;
    {
      invokeGuardedCallback(null, commitBeforeMutationLifecycles, null);
      if (hasCaughtError()) {
        didError = true;
        error = clearCaughtError();
      }
    }
    if (didError) {
      !(nextEffect !== null) ? invariant(false, 'Should have next effect. This error is likely caused by a bug in React. Please file an issue.') : void 0;
      captureCommitPhaseError(nextEffect, error);
      // Clean-up
      if (nextEffect !== null) {
        nextEffect = nextEffect.nextEffect;
      }
    }
  }
  stopCommitSnapshotEffectsTimer();

  if (enableProfilerTimer) {
    // Mark the current commit time to be shared by all Profilers in this batch.
    // This enables them to be grouped later.
    recordCommitTime();
  }

  // Commit all the side-effects within a tree. We'll do this in two passes.
  // The first pass performs all the host insertions, updates, deletions and
  // ref unmounts.
  nextEffect = firstEffect;
  startCommitHostEffectsTimer();
  while (nextEffect !== null) {
    var _didError = false;
    var _error = void 0;
    {
      invokeGuardedCallback(null, commitAllHostEffects, null);
      if (hasCaughtError()) {
        _didError = true;
        _error = clearCaughtError();
      }
    }
    if (_didError) {
      !(nextEffect !== null) ? invariant(false, 'Should have next effect. This error is likely caused by a bug in React. Please file an issue.') : void 0;
      captureCommitPhaseError(nextEffect, _error);
      // Clean-up
      if (nextEffect !== null) {
        nextEffect = nextEffect.nextEffect;
      }
    }
  }
  stopCommitHostEffectsTimer();

  resetAfterCommit(root.containerInfo);

  // The work-in-progress tree is now the current tree. This must come after
  // the first pass of the commit phase, so that the previous tree is still
  // current during componentWillUnmount, but before the second pass, so that
  // the finished work is current during componentDidMount/Update.
  root.current = finishedWork;

  // In the second pass we'll perform all life-cycles and ref callbacks.
  // Life-cycles happen as a separate pass so that all placements, updates,
  // and deletions in the entire tree have already been invoked.
  // This pass also triggers any renderer-specific initial effects.
  nextEffect = firstEffect;
  startCommitLifeCyclesTimer();
  while (nextEffect !== null) {
    var _didError2 = false;
    var _error2 = void 0;
    {
      invokeGuardedCallback(null, commitAllLifeCycles, null, root, committedExpirationTime);
      if (hasCaughtError()) {
        _didError2 = true;
        _error2 = clearCaughtError();
      }
    }
    if (_didError2) {
      !(nextEffect !== null) ? invariant(false, 'Should have next effect. This error is likely caused by a bug in React. Please file an issue.') : void 0;
      captureCommitPhaseError(nextEffect, _error2);
      if (nextEffect !== null) {
        nextEffect = nextEffect.nextEffect;
      }
    }
  }

  if (firstEffect !== null && rootWithPendingPassiveEffects !== null) {
    // This commit included a passive effect. These do not need to fire until
    // after the next paint. Schedule an callback to fire them in an async
    // event. To ensure serial execution, the callback will be flushed early if
    // we enter rootWithPendingPassiveEffects commit phase before then.
    var callback = commitPassiveEffects.bind(null, root, firstEffect);
    if (enableSchedulerTracing) {
      // TODO: Avoid this extra callback by mutating the tracing ref directly,
      // like we do at the beginning of commitRoot. I've opted not to do that
      // here because that code is still in flux.
      callback = tracing.unstable_wrap(callback);
    }
    passiveEffectCallbackHandle = scheduler.unstable_runWithPriority(scheduler.unstable_NormalPriority, function () {
      return schedulePassiveEffects(callback);
    });
    passiveEffectCallback = callback;
  }

  isCommitting$1 = false;
  isWorking = false;
  stopCommitLifeCyclesTimer();
  stopCommitTimer();
  onCommitRoot(finishedWork.stateNode);
  if (true && ReactFiberInstrumentation_1.debugTool) {
    ReactFiberInstrumentation_1.debugTool.onCommitWork(finishedWork);
  }

  var updateExpirationTimeAfterCommit = finishedWork.expirationTime;
  var childExpirationTimeAfterCommit = finishedWork.childExpirationTime;
  var earliestRemainingTimeAfterCommit = childExpirationTimeAfterCommit > updateExpirationTimeAfterCommit ? childExpirationTimeAfterCommit : updateExpirationTimeAfterCommit;
  if (earliestRemainingTimeAfterCommit === NoWork) {
    // If there's no remaining work, we can clear the set of already failed
    // error boundaries.
    legacyErrorBoundariesThatAlreadyFailed = null;
  }
  onCommit(root, earliestRemainingTimeAfterCommit);

  if (enableSchedulerTracing) {
    tracing.__interactionsRef.current = prevInteractions;

    var subscriber = void 0;

    try {
      subscriber = tracing.__subscriberRef.current;
      if (subscriber !== null && root.memoizedInteractions.size > 0) {
        var threadID = computeThreadID(committedExpirationTime, root.interactionThreadID);
        subscriber.onWorkStopped(root.memoizedInteractions, threadID);
      }
    } catch (error) {
      // It's not safe for commitRoot() to throw.
      // Store the error for now and we'll re-throw in finishRendering().
      if (!hasUnhandledError) {
        hasUnhandledError = true;
        unhandledError = error;
      }
    } finally {
      // Clear completed interactions from the pending Map.
      // Unless the render was suspended or cascading work was scheduled,
      // In which case– leave pending interactions until the subsequent render.
      var pendingInteractionMap = root.pendingInteractionMap;
      pendingInteractionMap.forEach(function (scheduledInteractions, scheduledExpirationTime) {
        // Only decrement the pending interaction count if we're done.
        // If there's still work at the current priority,
        // That indicates that we are waiting for suspense data.
        if (scheduledExpirationTime > earliestRemainingTimeAfterCommit) {
          pendingInteractionMap.delete(scheduledExpirationTime);

          scheduledInteractions.forEach(function (interaction) {
            interaction.__count--;

            if (subscriber !== null && interaction.__count === 0) {
              try {
                subscriber.onInteractionScheduledWorkCompleted(interaction);
              } catch (error) {
                // It's not safe for commitRoot() to throw.
                // Store the error for now and we'll re-throw in finishRendering().
                if (!hasUnhandledError) {
                  hasUnhandledError = true;
                  unhandledError = error;
                }
              }
            }
          });
        }
      });
    }
  }
}

function resetChildExpirationTime(workInProgress, renderTime) {
  if (renderTime !== Never && workInProgress.childExpirationTime === Never) {
    // The children of this component are hidden. Don't bubble their
    // expiration times.
    return;
  }

  var newChildExpirationTime = NoWork;

  // Bubble up the earliest expiration time.
  if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
    // We're in profiling mode.
    // Let's use this same traversal to update the render durations.
    var actualDuration = workInProgress.actualDuration;
    var treeBaseDuration = workInProgress.selfBaseDuration;

    // When a fiber is cloned, its actualDuration is reset to 0.
    // This value will only be updated if work is done on the fiber (i.e. it doesn't bailout).
    // When work is done, it should bubble to the parent's actualDuration.
    // If the fiber has not been cloned though, (meaning no work was done),
    // Then this value will reflect the amount of time spent working on a previous render.
    // In that case it should not bubble.
    // We determine whether it was cloned by comparing the child pointer.
    var shouldBubbleActualDurations = workInProgress.alternate === null || workInProgress.child !== workInProgress.alternate.child;

    var child = workInProgress.child;
    while (child !== null) {
      var childUpdateExpirationTime = child.expirationTime;
      var childChildExpirationTime = child.childExpirationTime;
      if (childUpdateExpirationTime > newChildExpirationTime) {
        newChildExpirationTime = childUpdateExpirationTime;
      }
      if (childChildExpirationTime > newChildExpirationTime) {
        newChildExpirationTime = childChildExpirationTime;
      }
      if (shouldBubbleActualDurations) {
        actualDuration += child.actualDuration;
      }
      treeBaseDuration += child.treeBaseDuration;
      child = child.sibling;
    }
    workInProgress.actualDuration = actualDuration;
    workInProgress.treeBaseDuration = treeBaseDuration;
  } else {
    var _child = workInProgress.child;
    while (_child !== null) {
      var _childUpdateExpirationTime = _child.expirationTime;
      var _childChildExpirationTime = _child.childExpirationTime;
      if (_childUpdateExpirationTime > newChildExpirationTime) {
        newChildExpirationTime = _childUpdateExpirationTime;
      }
      if (_childChildExpirationTime > newChildExpirationTime) {
        newChildExpirationTime = _childChildExpirationTime;
      }
      _child = _child.sibling;
    }
  }

  workInProgress.childExpirationTime = newChildExpirationTime;
}

function completeUnitOfWork(workInProgress) {
  // Attempt to complete the current unit of work, then move to the
  // next sibling. If there are no more siblings, return to the
  // parent fiber.
  while (true) {
    // The current, flushed, state of this fiber is the alternate.
    // Ideally nothing should rely on this, but relying on it here
    // means that we don't need an additional field on the work in
    // progress.
    var current$$1 = workInProgress.alternate;
    {
      setCurrentFiber(workInProgress);
    }

    var returnFiber = workInProgress.return;
    var siblingFiber = workInProgress.sibling;

    if ((workInProgress.effectTag & Incomplete) === NoEffect) {
      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
        // Don't replay if it fails during completion phase.
        mayReplayFailedUnitOfWork = false;
      }
      // This fiber completed.
      // Remember we're completing this unit so we can find a boundary if it fails.
      nextUnitOfWork = workInProgress;
      if (enableProfilerTimer) {
        if (workInProgress.mode & ProfileMode) {
          startProfilerTimer(workInProgress);
        }
        nextUnitOfWork = completeWork(current$$1, workInProgress, nextRenderExpirationTime);
        if (workInProgress.mode & ProfileMode) {
          // Update render duration assuming we didn't error.
          stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
        }
      } else {
        nextUnitOfWork = completeWork(current$$1, workInProgress, nextRenderExpirationTime);
      }
      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
        // We're out of completion phase so replaying is fine now.
        mayReplayFailedUnitOfWork = true;
      }
      stopWorkTimer(workInProgress);
      resetChildExpirationTime(workInProgress, nextRenderExpirationTime);
      {
        resetCurrentFiber();
      }

      if (nextUnitOfWork !== null) {
        // Completing this fiber spawned new work. Work on that next.
        return nextUnitOfWork;
      }

      if (returnFiber !== null &&
      // Do not append effects to parents if a sibling failed to complete
      (returnFiber.effectTag & Incomplete) === NoEffect) {
        // Append all the effects of the subtree and this fiber onto the effect
        // list of the parent. The completion order of the children affects the
        // side-effect order.
        if (returnFiber.firstEffect === null) {
          returnFiber.firstEffect = workInProgress.firstEffect;
        }
        if (workInProgress.lastEffect !== null) {
          if (returnFiber.lastEffect !== null) {
            returnFiber.lastEffect.nextEffect = workInProgress.firstEffect;
          }
          returnFiber.lastEffect = workInProgress.lastEffect;
        }

        // If this fiber had side-effects, we append it AFTER the children's
        // side-effects. We can perform certain side-effects earlier if
        // needed, by doing multiple passes over the effect list. We don't want
        // to schedule our own side-effect on our own list because if end up
        // reusing children we'll schedule this effect onto itself since we're
        // at the end.
        var effectTag = workInProgress.effectTag;
        // Skip both NoWork and PerformedWork tags when creating the effect list.
        // PerformedWork effect is read by React DevTools but shouldn't be committed.
        if (effectTag > PerformedWork) {
          if (returnFiber.lastEffect !== null) {
            returnFiber.lastEffect.nextEffect = workInProgress;
          } else {
            returnFiber.firstEffect = workInProgress;
          }
          returnFiber.lastEffect = workInProgress;
        }
      }

      if (true && ReactFiberInstrumentation_1.debugTool) {
        ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
      }

      if (siblingFiber !== null) {
        // If there is more work to do in this returnFiber, do that next.
        return siblingFiber;
      } else if (returnFiber !== null) {
        // If there's no more work in this returnFiber. Complete the returnFiber.
        workInProgress = returnFiber;
        continue;
      } else {
        // We've reached the root.
        return null;
      }
    } else {
      if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
        // Record the render duration for the fiber that errored.
        stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);

        // Include the time spent working on failed children before continuing.
        var actualDuration = workInProgress.actualDuration;
        var child = workInProgress.child;
        while (child !== null) {
          actualDuration += child.actualDuration;
          child = child.sibling;
        }
        workInProgress.actualDuration = actualDuration;
      }

      // This fiber did not complete because something threw. Pop values off
      // the stack without entering the complete phase. If this is a boundary,
      // capture values if possible.
      var next = unwindWork(workInProgress, nextRenderExpirationTime);
      // Because this fiber did not complete, don't reset its expiration time.
      if (workInProgress.effectTag & DidCapture) {
        // Restarting an error boundary
        stopFailedWorkTimer(workInProgress);
      } else {
        stopWorkTimer(workInProgress);
      }

      {
        resetCurrentFiber();
      }

      if (next !== null) {
        stopWorkTimer(workInProgress);
        if (true && ReactFiberInstrumentation_1.debugTool) {
          ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
        }

        // If completing this work spawned new work, do that next. We'll come
        // back here again.
        // Since we're restarting, remove anything that is not a host effect
        // from the effect tag.
        next.effectTag &= HostEffectMask;
        return next;
      }

      if (returnFiber !== null) {
        // Mark the parent fiber as incomplete and clear its effect list.
        returnFiber.firstEffect = returnFiber.lastEffect = null;
        returnFiber.effectTag |= Incomplete;
      }

      if (true && ReactFiberInstrumentation_1.debugTool) {
        ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
      }

      if (siblingFiber !== null) {
        // If there is more work to do in this returnFiber, do that next.
        return siblingFiber;
      } else if (returnFiber !== null) {
        // If there's no more work in this returnFiber. Complete the returnFiber.
        workInProgress = returnFiber;
        continue;
      } else {
        return null;
      }
    }
  }

  // Without this explicit null return Flow complains of invalid return type
  // TODO Remove the above while(true) loop
  // eslint-disable-next-line no-unreachable
  return null;
}

function performUnitOfWork(workInProgress) {
  // The current, flushed, state of this fiber is the alternate.
  // Ideally nothing should rely on this, but relying on it here
  // means that we don't need an additional field on the work in
  // progress.
  var current$$1 = workInProgress.alternate;

  // See if beginning this work spawns more work.
  startWorkTimer(workInProgress);
  {
    setCurrentFiber(workInProgress);
  }

  if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
    stashedWorkInProgressProperties = assignFiberPropertiesInDEV(stashedWorkInProgressProperties, workInProgress);
  }

  var next = void 0;
  if (enableProfilerTimer) {
    if (workInProgress.mode & ProfileMode) {
      startProfilerTimer(workInProgress);
    }

    next = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
    workInProgress.memoizedProps = workInProgress.pendingProps;

    if (workInProgress.mode & ProfileMode) {
      // Record the render duration assuming we didn't bailout (or error).
      stopProfilerTimerIfRunningAndRecordDelta(workInProgress, true);
    }
  } else {
    next = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
    workInProgress.memoizedProps = workInProgress.pendingProps;
  }

  {
    resetCurrentFiber();
    if (isReplayingFailedUnitOfWork) {
      // Currently replaying a failed unit of work. This should be unreachable,
      // because the render phase is meant to be idempotent, and it should
      // have thrown again. Since it didn't, rethrow the original error, so
      // React's internal stack is not misaligned.
      rethrowOriginalError();
    }
  }
  if (true && ReactFiberInstrumentation_1.debugTool) {
    ReactFiberInstrumentation_1.debugTool.onBeginWork(workInProgress);
  }

  if (next === null) {
    // If this doesn't spawn new work, complete the current work.
    next = completeUnitOfWork(workInProgress);
  }

  ReactCurrentOwner$2.current = null;

  return next;
}

function workLoop(isYieldy) {
  if (!isYieldy) {
    // Flush work without yielding
    while (nextUnitOfWork !== null) {
      nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
    }
  } else {
    // Flush asynchronous work until there's a higher priority event
    while (nextUnitOfWork !== null && !shouldYieldToRenderer()) {
      nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
    }
  }
}

function renderRoot(root, isYieldy) {
  !!isWorking ? invariant(false, 'renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue.') : void 0;

  flushPassiveEffects();

  isWorking = true;
  var previousDispatcher = ReactCurrentDispatcher.current;
  ReactCurrentDispatcher.current = ContextOnlyDispatcher;

  var expirationTime = root.nextExpirationTimeToWorkOn;

  // Check if we're starting from a fresh stack, or if we're resuming from
  // previously yielded work.
  if (expirationTime !== nextRenderExpirationTime || root !== nextRoot || nextUnitOfWork === null) {
    // Reset the stack and start working from the root.
    resetStack();
    nextRoot = root;
    nextRenderExpirationTime = expirationTime;
    nextUnitOfWork = createWorkInProgress(nextRoot.current, null, nextRenderExpirationTime);
    root.pendingCommitExpirationTime = NoWork;

    if (enableSchedulerTracing) {
      // Determine which interactions this batch of work currently includes,
      // So that we can accurately attribute time spent working on it,
      var interactions = new Set();
      root.pendingInteractionMap.forEach(function (scheduledInteractions, scheduledExpirationTime) {
        if (scheduledExpirationTime >= expirationTime) {
          scheduledInteractions.forEach(function (interaction) {
            return interactions.add(interaction);
          });
        }
      });

      // Store the current set of interactions on the FiberRoot for a few reasons:
      // We can re-use it in hot functions like renderRoot() without having to recalculate it.
      // We will also use it in commitWork() to pass to any Profiler onRender() hooks.
      // This also provides DevTools with a way to access it when the onCommitRoot() hook is called.
      root.memoizedInteractions = interactions;

      if (interactions.size > 0) {
        var subscriber = tracing.__subscriberRef.current;
        if (subscriber !== null) {
          var threadID = computeThreadID(expirationTime, root.interactionThreadID);
          try {
            subscriber.onWorkStarted(interactions, threadID);
          } catch (error) {
            // Work thrown by an interaction tracing subscriber should be rethrown,
            // But only once it's safe (to avoid leaving the scheduler in an invalid state).
            // Store the error for now and we'll re-throw in finishRendering().
            if (!hasUnhandledError) {
              hasUnhandledError = true;
              unhandledError = error;
            }
          }
        }
      }
    }
  }

  var prevInteractions = null;
  if (enableSchedulerTracing) {
    // We're about to start new traced work.
    // Restore pending interactions so cascading work triggered during the render phase will be accounted for.
    prevInteractions = tracing.__interactionsRef.current;
    tracing.__interactionsRef.current = root.memoizedInteractions;
  }

  var didFatal = false;

  startWorkLoopTimer(nextUnitOfWork);

  do {
    try {
      workLoop(isYieldy);
    } catch (thrownValue) {
      resetContextDependences();
      resetHooks();

      // Reset in case completion throws.
      // This is only used in DEV and when replaying is on.
      var mayReplay = void 0;
      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
        mayReplay = mayReplayFailedUnitOfWork;
        mayReplayFailedUnitOfWork = true;
      }

      if (nextUnitOfWork === null) {
        // This is a fatal error.
        didFatal = true;
        onUncaughtError(thrownValue);
      } else {
        if (enableProfilerTimer && nextUnitOfWork.mode & ProfileMode) {
          // Record the time spent rendering before an error was thrown.
          // This avoids inaccurate Profiler durations in the case of a suspended render.
          stopProfilerTimerIfRunningAndRecordDelta(nextUnitOfWork, true);
        }

        {
          // Reset global debug state
          // We assume this is defined in DEV
          resetCurrentlyProcessingQueue();
        }

        if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
          if (mayReplay) {
            var failedUnitOfWork = nextUnitOfWork;
            replayUnitOfWork(failedUnitOfWork, thrownValue, isYieldy);
          }
        }

        // TODO: we already know this isn't true in some cases.
        // At least this shows a nicer error message until we figure out the cause.
        // https://github.com/facebook/react/issues/12449#issuecomment-386727431
        !(nextUnitOfWork !== null) ? invariant(false, 'Failed to replay rendering after an error. This is likely caused by a bug in React. Please file an issue with a reproducing case to help us find it.') : void 0;

        var sourceFiber = nextUnitOfWork;
        var returnFiber = sourceFiber.return;
        if (returnFiber === null) {
          // This is the root. The root could capture its own errors. However,
          // we don't know if it errors before or after we pushed the host
          // context. This information is needed to avoid a stack mismatch.
          // Because we're not sure, treat this as a fatal error. We could track
          // which phase it fails in, but doesn't seem worth it. At least
          // for now.
          didFatal = true;
          onUncaughtError(thrownValue);
        } else {
          throwException(root, returnFiber, sourceFiber, thrownValue, nextRenderExpirationTime);
          nextUnitOfWork = completeUnitOfWork(sourceFiber);
          continue;
        }
      }
    }
    break;
  } while (true);

  if (enableSchedulerTracing) {
    // Traced work is done for now; restore the previous interactions.
    tracing.__interactionsRef.current = prevInteractions;
  }

  // We're done performing work. Time to clean up.
  isWorking = false;
  ReactCurrentDispatcher.current = previousDispatcher;
  resetContextDependences();
  resetHooks();

  // Yield back to main thread.
  if (didFatal) {
    var _didCompleteRoot = false;
    stopWorkLoopTimer(interruptedBy, _didCompleteRoot);
    interruptedBy = null;
    // There was a fatal error.
    {
      resetStackAfterFatalErrorInDev();
    }
    // `nextRoot` points to the in-progress root. A non-null value indicates
    // that we're in the middle of an async render. Set it to null to indicate
    // there's no more work to be done in the current batch.
    nextRoot = null;
    onFatal(root);
    return;
  }

  if (nextUnitOfWork !== null) {
    // There's still remaining async work in this tree, but we ran out of time
    // in the current frame. Yield back to the renderer. Unless we're
    // interrupted by a higher priority update, we'll continue later from where
    // we left off.
    var _didCompleteRoot2 = false;
    stopWorkLoopTimer(interruptedBy, _didCompleteRoot2);
    interruptedBy = null;
    onYield(root);
    return;
  }

  // We completed the whole tree.
  var didCompleteRoot = true;
  stopWorkLoopTimer(interruptedBy, didCompleteRoot);
  var rootWorkInProgress = root.current.alternate;
  !(rootWorkInProgress !== null) ? invariant(false, 'Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue.') : void 0;

  // `nextRoot` points to the in-progress root. A non-null value indicates
  // that we're in the middle of an async render. Set it to null to indicate
  // there's no more work to be done in the current batch.
  nextRoot = null;
  interruptedBy = null;

  if (nextRenderDidError) {
    // There was an error
    if (hasLowerPriorityWork(root, expirationTime)) {
      // There's lower priority work. If so, it may have the effect of fixing
      // the exception that was just thrown. Exit without committing. This is
      // similar to a suspend, but without a timeout because we're not waiting
      // for a promise to resolve. React will restart at the lower
      // priority level.
      markSuspendedPriorityLevel(root, expirationTime);
      var suspendedExpirationTime = expirationTime;
      var rootExpirationTime = root.expirationTime;
      onSuspend(root, rootWorkInProgress, suspendedExpirationTime, rootExpirationTime, -1 // Indicates no timeout
      );
      return;
    } else if (
    // There's no lower priority work, but we're rendering asynchronously.
    // Synchronously attempt to render the same level one more time. This is
    // similar to a suspend, but without a timeout because we're not waiting
    // for a promise to resolve.
    !root.didError && isYieldy) {
      root.didError = true;
      var _suspendedExpirationTime = root.nextExpirationTimeToWorkOn = expirationTime;
      var _rootExpirationTime = root.expirationTime = Sync;
      onSuspend(root, rootWorkInProgress, _suspendedExpirationTime, _rootExpirationTime, -1 // Indicates no timeout
      );
      return;
    }
  }

  if (isYieldy && nextLatestAbsoluteTimeoutMs !== -1) {
    // The tree was suspended.
    var _suspendedExpirationTime2 = expirationTime;
    markSuspendedPriorityLevel(root, _suspendedExpirationTime2);

    // Find the earliest uncommitted expiration time in the tree, including
    // work that is suspended. The timeout threshold cannot be longer than
    // the overall expiration.
    var earliestExpirationTime = findEarliestOutstandingPriorityLevel(root, expirationTime);
    var earliestExpirationTimeMs = expirationTimeToMs(earliestExpirationTime);
    if (earliestExpirationTimeMs < nextLatestAbsoluteTimeoutMs) {
      nextLatestAbsoluteTimeoutMs = earliestExpirationTimeMs;
    }

    // Subtract the current time from the absolute timeout to get the number
    // of milliseconds until the timeout. In other words, convert an absolute
    // timestamp to a relative time. This is the value that is passed
    // to `setTimeout`.
    var currentTimeMs = expirationTimeToMs(requestCurrentTime());
    var msUntilTimeout = nextLatestAbsoluteTimeoutMs - currentTimeMs;
    msUntilTimeout = msUntilTimeout < 0 ? 0 : msUntilTimeout;

    // TODO: Account for the Just Noticeable Difference

    var _rootExpirationTime2 = root.expirationTime;
    onSuspend(root, rootWorkInProgress, _suspendedExpirationTime2, _rootExpirationTime2, msUntilTimeout);
    return;
  }

  // Ready to commit.
  onComplete(root, rootWorkInProgress, expirationTime);
}

function captureCommitPhaseError(sourceFiber, value) {
  var expirationTime = Sync;
  var fiber = sourceFiber.return;
  while (fiber !== null) {
    switch (fiber.tag) {
      case ClassComponent:
        var ctor = fiber.type;
        var instance = fiber.stateNode;
        if (typeof ctor.getDerivedStateFromError === 'function' || typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance)) {
          var errorInfo = createCapturedValue(value, sourceFiber);
          var update = createClassErrorUpdate(fiber, errorInfo, expirationTime);
          enqueueUpdate(fiber, update);
          scheduleWork(fiber, expirationTime);
          return;
        }
        break;
      case HostRoot:
        {
          var _errorInfo = createCapturedValue(value, sourceFiber);
          var _update = createRootErrorUpdate(fiber, _errorInfo, expirationTime);
          enqueueUpdate(fiber, _update);
          scheduleWork(fiber, expirationTime);
          return;
        }
    }
    fiber = fiber.return;
  }

  if (sourceFiber.tag === HostRoot) {
    // Error was thrown at the root. There is no parent, so the root
    // itself should capture it.
    var rootFiber = sourceFiber;
    var _errorInfo2 = createCapturedValue(value, rootFiber);
    var _update2 = createRootErrorUpdate(rootFiber, _errorInfo2, expirationTime);
    enqueueUpdate(rootFiber, _update2);
    scheduleWork(rootFiber, expirationTime);
  }
}

function computeThreadID(expirationTime, interactionThreadID) {
  // Interaction threads are unique per root and expiration time.
  return expirationTime * 1000 + interactionThreadID;
}

// Creates a unique async expiration time.
function computeUniqueAsyncExpiration() {
  var currentTime = requestCurrentTime();
  var result = computeAsyncExpiration(currentTime);
  if (result >= lastUniqueAsyncExpiration) {
    // Since we assume the current time monotonically increases, we only hit
    // this branch when computeUniqueAsyncExpiration is fired multiple times
    // within a 200ms window (or whatever the async bucket size is).
    result = lastUniqueAsyncExpiration - 1;
  }
  lastUniqueAsyncExpiration = result;
  return lastUniqueAsyncExpiration;
}

function computeExpirationForFiber(currentTime, fiber) {
  var priorityLevel = scheduler.unstable_getCurrentPriorityLevel();

  var expirationTime = void 0;
  if ((fiber.mode & ConcurrentMode) === NoContext) {
    // Outside of concurrent mode, updates are always synchronous.
    expirationTime = Sync;
  } else if (isWorking && !isCommitting$1) {
    // During render phase, updates expire during as the current render.
    expirationTime = nextRenderExpirationTime;
  } else {
    switch (priorityLevel) {
      case scheduler.unstable_ImmediatePriority:
        expirationTime = Sync;
        break;
      case scheduler.unstable_UserBlockingPriority:
        expirationTime = computeInteractiveExpiration(currentTime);
        break;
      case scheduler.unstable_NormalPriority:
        // This is a normal, concurrent update
        expirationTime = computeAsyncExpiration(currentTime);
        break;
      case scheduler.unstable_LowPriority:
      case scheduler.unstable_IdlePriority:
        expirationTime = Never;
        break;
      default:
        invariant(false, 'Unknown priority level. This error is likely caused by a bug in React. Please file an issue.');
    }

    // If we're in the middle of rendering a tree, do not update at the same
    // expiration time that is already rendering.
    if (nextRoot !== null && expirationTime === nextRenderExpirationTime) {
      expirationTime -= 1;
    }
  }

  // Keep track of the lowest pending interactive expiration time. This
  // allows us to synchronously flush all interactive updates
  // when needed.
  // TODO: Move this to renderer?
  if (priorityLevel === scheduler.unstable_UserBlockingPriority && (lowestPriorityPendingInteractiveExpirationTime === NoWork || expirationTime < lowestPriorityPendingInteractiveExpirationTime)) {
    lowestPriorityPendingInteractiveExpirationTime = expirationTime;
  }

  return expirationTime;
}

function renderDidSuspend(root, absoluteTimeoutMs, suspendedTime) {
  // Schedule the timeout.
  if (absoluteTimeoutMs >= 0 && nextLatestAbsoluteTimeoutMs < absoluteTimeoutMs) {
    nextLatestAbsoluteTimeoutMs = absoluteTimeoutMs;
  }
}

function renderDidError() {
  nextRenderDidError = true;
}

function pingSuspendedRoot(root, thenable, pingTime) {
  // A promise that previously suspended React from committing has resolved.
  // If React is still suspended, try again at the previous level (pingTime).

  var pingCache = root.pingCache;
  if (pingCache !== null) {
    // The thenable resolved, so we no longer need to memoize, because it will
    // never be thrown again.
    pingCache.delete(thenable);
  }

  if (nextRoot !== null && nextRenderExpirationTime === pingTime) {
    // Received a ping at the same priority level at which we're currently
    // rendering. Restart from the root.
    nextRoot = null;
  } else {
    // Confirm that the root is still suspended at this level. Otherwise exit.
    if (isPriorityLevelSuspended(root, pingTime)) {
      // Ping at the original level
      markPingedPriorityLevel(root, pingTime);
      var rootExpirationTime = root.expirationTime;
      if (rootExpirationTime !== NoWork) {
        requestWork(root, rootExpirationTime);
      }
    }
  }
}

function retryTimedOutBoundary(boundaryFiber, thenable) {
  // The boundary fiber (a Suspense component) previously timed out and was
  // rendered in its fallback state. One of the promises that suspended it has
  // resolved, which means at least part of the tree was likely unblocked. Try
  var retryCache = void 0;
  if (enableSuspenseServerRenderer) {
    switch (boundaryFiber.tag) {
      case SuspenseComponent:
        retryCache = boundaryFiber.stateNode;
        break;
      case DehydratedSuspenseComponent:
        retryCache = boundaryFiber.memoizedState;
        break;
      default:
        invariant(false, 'Pinged unknown suspense boundary type. This is probably a bug in React.');
    }
  } else {
    retryCache = boundaryFiber.stateNode;
  }
  if (retryCache !== null) {
    // The thenable resolved, so we no longer need to memoize, because it will
    // never be thrown again.
    retryCache.delete(thenable);
  }

  var currentTime = requestCurrentTime();
  var retryTime = computeExpirationForFiber(currentTime, boundaryFiber);
  var root = scheduleWorkToRoot(boundaryFiber, retryTime);
  if (root !== null) {
    markPendingPriorityLevel(root, retryTime);
    var rootExpirationTime = root.expirationTime;
    if (rootExpirationTime !== NoWork) {
      requestWork(root, rootExpirationTime);
    }
  }
}

function scheduleWorkToRoot(fiber, expirationTime) {
  recordScheduleUpdate();

  {
    if (fiber.tag === ClassComponent) {
      var instance = fiber.stateNode;
      warnAboutInvalidUpdates(instance);
    }
  }

  // Update the source fiber's expiration time
  if (fiber.expirationTime < expirationTime) {
    fiber.expirationTime = expirationTime;
  }
  var alternate = fiber.alternate;
  if (alternate !== null && alternate.expirationTime < expirationTime) {
    alternate.expirationTime = expirationTime;
  }
  // Walk the parent path to the root and update the child expiration time.
  var node = fiber.return;
  var root = null;
  if (node === null && fiber.tag === HostRoot) {
    root = fiber.stateNode;
  } else {
    while (node !== null) {
      alternate = node.alternate;
      if (node.childExpirationTime < expirationTime) {
        node.childExpirationTime = expirationTime;
        if (alternate !== null && alternate.childExpirationTime < expirationTime) {
          alternate.childExpirationTime = expirationTime;
        }
      } else if (alternate !== null && alternate.childExpirationTime < expirationTime) {
        alternate.childExpirationTime = expirationTime;
      }
      if (node.return === null && node.tag === HostRoot) {
        root = node.stateNode;
        break;
      }
      node = node.return;
    }
  }

  if (enableSchedulerTracing) {
    if (root !== null) {
      var interactions = tracing.__interactionsRef.current;
      if (interactions.size > 0) {
        var pendingInteractionMap = root.pendingInteractionMap;
        var pendingInteractions = pendingInteractionMap.get(expirationTime);
        if (pendingInteractions != null) {
          interactions.forEach(function (interaction) {
            if (!pendingInteractions.has(interaction)) {
              // Update the pending async work count for previously unscheduled interaction.
              interaction.__count++;
            }

            pendingInteractions.add(interaction);
          });
        } else {
          pendingInteractionMap.set(expirationTime, new Set(interactions));

          // Update the pending async work count for the current interactions.
          interactions.forEach(function (interaction) {
            interaction.__count++;
          });
        }

        var subscriber = tracing.__subscriberRef.current;
        if (subscriber !== null) {
          var threadID = computeThreadID(expirationTime, root.interactionThreadID);
          subscriber.onWorkScheduled(interactions, threadID);
        }
      }
    }
  }
  return root;
}

function warnIfNotCurrentlyBatchingInDev(fiber) {
  {
    if (isRendering === false && isBatchingUpdates === false) {
      warningWithoutStack$1(false, 'An update to %s inside a test was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be wrapped into act(...):\n\n' + 'act(() => {\n' + '  /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see in the browser." + ' Learn more at https://fb.me/react-wrap-tests-with-act' + '%s', getComponentName(fiber.type), getStackByFiberInDevAndProd(fiber));
    }
  }
}

function scheduleWork(fiber, expirationTime) {
  var root = scheduleWorkToRoot(fiber, expirationTime);
  if (root === null) {
    {
      switch (fiber.tag) {
        case ClassComponent:
          warnAboutUpdateOnUnmounted(fiber, true);
          break;
        case FunctionComponent:
        case ForwardRef:
        case MemoComponent:
        case SimpleMemoComponent:
          warnAboutUpdateOnUnmounted(fiber, false);
          break;
      }
    }
    return;
  }

  if (!isWorking && nextRenderExpirationTime !== NoWork && expirationTime > nextRenderExpirationTime) {
    // This is an interruption. (Used for performance tracking.)
    interruptedBy = fiber;
    resetStack();
  }
  markPendingPriorityLevel(root, expirationTime);
  if (
  // If we're in the render phase, we don't need to schedule this root
  // for an update, because we'll do it before we exit...
  !isWorking || isCommitting$1 ||
  // ...unless this is a different root than the one we're rendering.
  nextRoot !== root) {
    var rootExpirationTime = root.expirationTime;
    requestWork(root, rootExpirationTime);
  }
  if (nestedUpdateCount > NESTED_UPDATE_LIMIT) {
    // Reset this back to zero so subsequent updates don't throw.
    nestedUpdateCount = 0;
    invariant(false, 'Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops.');
  }
}

function syncUpdates(fn, a, b, c, d) {
  return scheduler.unstable_runWithPriority(scheduler.unstable_ImmediatePriority, function () {
    return fn(a, b, c, d);
  });
}

// TODO: Everything below this is written as if it has been lifted to the
// renderers. I'll do this in a follow-up.

// Linked-list of roots
var firstScheduledRoot = null;
var lastScheduledRoot = null;

var callbackExpirationTime = NoWork;
var callbackID = void 0;
var isRendering = false;
var nextFlushedRoot = null;
var nextFlushedExpirationTime = NoWork;
var lowestPriorityPendingInteractiveExpirationTime = NoWork;
var hasUnhandledError = false;
var unhandledError = null;

var isBatchingUpdates = false;
var isUnbatchingUpdates = false;

var completedBatches = null;

var originalStartTimeMs = scheduler.unstable_now();
var currentRendererTime = msToExpirationTime(originalStartTimeMs);
var currentSchedulerTime = currentRendererTime;

// Use these to prevent an infinite loop of nested updates
var NESTED_UPDATE_LIMIT = 50;
var nestedUpdateCount = 0;
var lastCommittedRootDuringThisBatch = null;

function recomputeCurrentRendererTime() {
  var currentTimeMs = scheduler.unstable_now() - originalStartTimeMs;
  currentRendererTime = msToExpirationTime(currentTimeMs);
}

function scheduleCallbackWithExpirationTime(root, expirationTime) {
  if (callbackExpirationTime !== NoWork) {
    // A callback is already scheduled. Check its expiration time (timeout).
    if (expirationTime < callbackExpirationTime) {
      // Existing callback has sufficient timeout. Exit.
      return;
    } else {
      if (callbackID !== null) {
        // Existing callback has insufficient timeout. Cancel and schedule a
        // new one.
        scheduler.unstable_cancelCallback(callbackID);
      }
    }
    // The request callback timer is already running. Don't start a new one.
  } else {
    startRequestCallbackTimer();
  }

  callbackExpirationTime = expirationTime;
  var currentMs = scheduler.unstable_now() - originalStartTimeMs;
  var expirationTimeMs = expirationTimeToMs(expirationTime);
  var timeout = expirationTimeMs - currentMs;
  callbackID = scheduler.unstable_scheduleCallback(performAsyncWork, { timeout: timeout });
}

// For every call to renderRoot, one of onFatal, onComplete, onSuspend, and
// onYield is called upon exiting. We use these in lieu of returning a tuple.
// I've also chosen not to inline them into renderRoot because these will
// eventually be lifted into the renderer.
function onFatal(root) {
  root.finishedWork = null;
}

function onComplete(root, finishedWork, expirationTime) {
  root.pendingCommitExpirationTime = expirationTime;
  root.finishedWork = finishedWork;
}

function onSuspend(root, finishedWork, suspendedExpirationTime, rootExpirationTime, msUntilTimeout) {
  root.expirationTime = rootExpirationTime;
  if (msUntilTimeout === 0 && !shouldYieldToRenderer()) {
    // Don't wait an additional tick. Commit the tree immediately.
    root.pendingCommitExpirationTime = suspendedExpirationTime;
    root.finishedWork = finishedWork;
  } else if (msUntilTimeout > 0) {
    // Wait `msUntilTimeout` milliseconds before committing.
    root.timeoutHandle = scheduleTimeout(onTimeout.bind(null, root, finishedWork, suspendedExpirationTime), msUntilTimeout);
  }
}

function onYield(root) {
  root.finishedWork = null;
}

function onTimeout(root, finishedWork, suspendedExpirationTime) {
  // The root timed out. Commit it.
  root.pendingCommitExpirationTime = suspendedExpirationTime;
  root.finishedWork = finishedWork;
  // Read the current time before entering the commit phase. We can be
  // certain this won't cause tearing related to batching of event updates
  // because we're at the top of a timer event.
  recomputeCurrentRendererTime();
  currentSchedulerTime = currentRendererTime;
  flushRoot(root, suspendedExpirationTime);
}

function onCommit(root, expirationTime) {
  root.expirationTime = expirationTime;
  root.finishedWork = null;
}

function requestCurrentTime() {
  // requestCurrentTime is called by the scheduler to compute an expiration
  // time.
  //
  // Expiration times are computed by adding to the current time (the start
  // time). However, if two updates are scheduled within the same event, we
  // should treat their start times as simultaneous, even if the actual clock
  // time has advanced between the first and second call.

  // In other words, because expiration times determine how updates are batched,
  // we want all updates of like priority that occur within the same event to
  // receive the same expiration time. Otherwise we get tearing.
  //
  // We keep track of two separate times: the current "renderer" time and the
  // current "scheduler" time. The renderer time can be updated whenever; it
  // only exists to minimize the calls performance.now.
  //
  // But the scheduler time can only be updated if there's no pending work, or
  // if we know for certain that we're not in the middle of an event.

  if (isRendering) {
    // We're already rendering. Return the most recently read time.
    return currentSchedulerTime;
  }
  // Check if there's pending work.
  findHighestPriorityRoot();
  if (nextFlushedExpirationTime === NoWork || nextFlushedExpirationTime === Never) {
    // If there's no pending work, or if the pending work is offscreen, we can
    // read the current time without risk of tearing.
    recomputeCurrentRendererTime();
    currentSchedulerTime = currentRendererTime;
    return currentSchedulerTime;
  }
  // There's already pending work. We might be in the middle of a browser
  // event. If we were to read the current time, it could cause multiple updates
  // within the same event to receive different expiration times, leading to
  // tearing. Return the last read time. During the next idle callback, the
  // time will be updated.
  return currentSchedulerTime;
}

// requestWork is called by the scheduler whenever a root receives an update.
// It's up to the renderer to call renderRoot at some point in the future.
function requestWork(root, expirationTime) {
  addRootToSchedule(root, expirationTime);
  if (isRendering) {
    // Prevent reentrancy. Remaining work will be scheduled at the end of
    // the currently rendering batch.
    return;
  }

  if (isBatchingUpdates) {
    // Flush work at the end of the batch.
    if (isUnbatchingUpdates) {
      // ...unless we're inside unbatchedUpdates, in which case we should
      // flush it now.
      nextFlushedRoot = root;
      nextFlushedExpirationTime = Sync;
      performWorkOnRoot(root, Sync, false);
    }
    return;
  }

  // TODO: Get rid of Sync and use current time?
  if (expirationTime === Sync) {
    performSyncWork();
  } else {
    scheduleCallbackWithExpirationTime(root, expirationTime);
  }
}

function addRootToSchedule(root, expirationTime) {
  // Add the root to the schedule.
  // Check if this root is already part of the schedule.
  if (root.nextScheduledRoot === null) {
    // This root is not already scheduled. Add it.
    root.expirationTime = expirationTime;
    if (lastScheduledRoot === null) {
      firstScheduledRoot = lastScheduledRoot = root;
      root.nextScheduledRoot = root;
    } else {
      lastScheduledRoot.nextScheduledRoot = root;
      lastScheduledRoot = root;
      lastScheduledRoot.nextScheduledRoot = firstScheduledRoot;
    }
  } else {
    // This root is already scheduled, but its priority may have increased.
    var remainingExpirationTime = root.expirationTime;
    if (expirationTime > remainingExpirationTime) {
      // Update the priority.
      root.expirationTime = expirationTime;
    }
  }
}

function findHighestPriorityRoot() {
  var highestPriorityWork = NoWork;
  var highestPriorityRoot = null;
  if (lastScheduledRoot !== null) {
    var previousScheduledRoot = lastScheduledRoot;
    var root = firstScheduledRoot;
    while (root !== null) {
      var remainingExpirationTime = root.expirationTime;
      if (remainingExpirationTime === NoWork) {
        // This root no longer has work. Remove it from the scheduler.

        // TODO: This check is redudant, but Flow is confused by the branch
        // below where we set lastScheduledRoot to null, even though we break
        // from the loop right after.
        !(previousScheduledRoot !== null && lastScheduledRoot !== null) ? invariant(false, 'Should have a previous and last root. This error is likely caused by a bug in React. Please file an issue.') : void 0;
        if (root === root.nextScheduledRoot) {
          // This is the only root in the list.
          root.nextScheduledRoot = null;
          firstScheduledRoot = lastScheduledRoot = null;
          break;
        } else if (root === firstScheduledRoot) {
          // This is the first root in the list.
          var next = root.nextScheduledRoot;
          firstScheduledRoot = next;
          lastScheduledRoot.nextScheduledRoot = next;
          root.nextScheduledRoot = null;
        } else if (root === lastScheduledRoot) {
          // This is the last root in the list.
          lastScheduledRoot = previousScheduledRoot;
          lastScheduledRoot.nextScheduledRoot = firstScheduledRoot;
          root.nextScheduledRoot = null;
          break;
        } else {
          previousScheduledRoot.nextScheduledRoot = root.nextScheduledRoot;
          root.nextScheduledRoot = null;
        }
        root = previousScheduledRoot.nextScheduledRoot;
      } else {
        if (remainingExpirationTime > highestPriorityWork) {
          // Update the priority, if it's higher
          highestPriorityWork = remainingExpirationTime;
          highestPriorityRoot = root;
        }
        if (root === lastScheduledRoot) {
          break;
        }
        if (highestPriorityWork === Sync) {
          // Sync is highest priority by definition so
          // we can stop searching.
          break;
        }
        previousScheduledRoot = root;
        root = root.nextScheduledRoot;
      }
    }
  }

  nextFlushedRoot = highestPriorityRoot;
  nextFlushedExpirationTime = highestPriorityWork;
}

// TODO: This wrapper exists because many of the older tests (the ones that use
// flushDeferredPri) rely on the number of times `shouldYield` is called. We
// should get rid of it.
var didYield = false;
function shouldYieldToRenderer() {
  if (didYield) {
    return true;
  }
  if (scheduler.unstable_shouldYield()) {
    didYield = true;
    return true;
  }
  return false;
}

function performAsyncWork() {
  try {
    if (!shouldYieldToRenderer()) {
      // The callback timed out. That means at least one update has expired.
      // Iterate through the root schedule. If they contain expired work, set
      // the next render expiration time to the current time. This has the effect
      // of flushing all expired work in a single batch, instead of flushing each
      // level one at a time.
      if (firstScheduledRoot !== null) {
        recomputeCurrentRendererTime();
        var root = firstScheduledRoot;
        do {
          didExpireAtExpirationTime(root, currentRendererTime);
          // The root schedule is circular, so this is never null.
          root = root.nextScheduledRoot;
        } while (root !== firstScheduledRoot);
      }
    }
    performWork(NoWork, true);
  } finally {
    didYield = false;
  }
}

function performSyncWork() {
  performWork(Sync, false);
}

function performWork(minExpirationTime, isYieldy) {
  // Keep working on roots until there's no more work, or until there's a higher
  // priority event.
  findHighestPriorityRoot();

  if (isYieldy) {
    recomputeCurrentRendererTime();
    currentSchedulerTime = currentRendererTime;

    if (enableUserTimingAPI) {
      var didExpire = nextFlushedExpirationTime > currentRendererTime;
      var timeout = expirationTimeToMs(nextFlushedExpirationTime);
      stopRequestCallbackTimer(didExpire, timeout);
    }

    while (nextFlushedRoot !== null && nextFlushedExpirationTime !== NoWork && minExpirationTime <= nextFlushedExpirationTime && !(didYield && currentRendererTime > nextFlushedExpirationTime)) {
      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, currentRendererTime > nextFlushedExpirationTime);
      findHighestPriorityRoot();
      recomputeCurrentRendererTime();
      currentSchedulerTime = currentRendererTime;
    }
  } else {
    while (nextFlushedRoot !== null && nextFlushedExpirationTime !== NoWork && minExpirationTime <= nextFlushedExpirationTime) {
      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, false);
      findHighestPriorityRoot();
    }
  }

  // We're done flushing work. Either we ran out of time in this callback,
  // or there's no more work left with sufficient priority.

  // If we're inside a callback, set this to false since we just completed it.
  if (isYieldy) {
    callbackExpirationTime = NoWork;
    callbackID = null;
  }
  // If there's work left over, schedule a new callback.
  if (nextFlushedExpirationTime !== NoWork) {
    scheduleCallbackWithExpirationTime(nextFlushedRoot, nextFlushedExpirationTime);
  }

  // Clean-up.
  finishRendering();
}

function flushRoot(root, expirationTime) {
  !!isRendering ? invariant(false, 'work.commit(): Cannot commit while already rendering. This likely means you attempted to commit from inside a lifecycle method.') : void 0;
  // Perform work on root as if the given expiration time is the current time.
  // This has the effect of synchronously flushing all work up to and
  // including the given time.
  nextFlushedRoot = root;
  nextFlushedExpirationTime = expirationTime;
  performWorkOnRoot(root, expirationTime, false);
  // Flush any sync work that was scheduled by lifecycles
  performSyncWork();
}

function finishRendering() {
  nestedUpdateCount = 0;
  lastCommittedRootDuringThisBatch = null;

  if (completedBatches !== null) {
    var batches = completedBatches;
    completedBatches = null;
    for (var i = 0; i < batches.length; i++) {
      var batch = batches[i];
      try {
        batch._onComplete();
      } catch (error) {
        if (!hasUnhandledError) {
          hasUnhandledError = true;
          unhandledError = error;
        }
      }
    }
  }

  if (hasUnhandledError) {
    var error = unhandledError;
    unhandledError = null;
    hasUnhandledError = false;
    throw error;
  }
}

function performWorkOnRoot(root, expirationTime, isYieldy) {
  !!isRendering ? invariant(false, 'performWorkOnRoot was called recursively. This error is likely caused by a bug in React. Please file an issue.') : void 0;

  isRendering = true;

  // Check if this is async work or sync/expired work.
  if (!isYieldy) {
    // Flush work without yielding.
    // TODO: Non-yieldy work does not necessarily imply expired work. A renderer
    // may want to perform some work without yielding, but also without
    // requiring the root to complete (by triggering placeholders).

    var finishedWork = root.finishedWork;
    if (finishedWork !== null) {
      // This root is already complete. We can commit it.
      completeRoot(root, finishedWork, expirationTime);
    } else {
      root.finishedWork = null;
      // If this root previously suspended, clear its existing timeout, since
      // we're about to try rendering again.
      var timeoutHandle = root.timeoutHandle;
      if (timeoutHandle !== noTimeout) {
        root.timeoutHandle = noTimeout;
        // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
        cancelTimeout(timeoutHandle);
      }
      renderRoot(root, isYieldy);
      finishedWork = root.finishedWork;
      if (finishedWork !== null) {
        // We've completed the root. Commit it.
        completeRoot(root, finishedWork, expirationTime);
      }
    }
  } else {
    // Flush async work.
    var _finishedWork = root.finishedWork;
    if (_finishedWork !== null) {
      // This root is already complete. We can commit it.
      completeRoot(root, _finishedWork, expirationTime);
    } else {
      root.finishedWork = null;
      // If this root previously suspended, clear its existing timeout, since
      // we're about to try rendering again.
      var _timeoutHandle = root.timeoutHandle;
      if (_timeoutHandle !== noTimeout) {
        root.timeoutHandle = noTimeout;
        // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
        cancelTimeout(_timeoutHandle);
      }
      renderRoot(root, isYieldy);
      _finishedWork = root.finishedWork;
      if (_finishedWork !== null) {
        // We've completed the root. Check the if we should yield one more time
        // before committing.
        if (!shouldYieldToRenderer()) {
          // Still time left. Commit the root.
          completeRoot(root, _finishedWork, expirationTime);
        } else {
          // There's no time left. Mark this root as complete. We'll come
          // back and commit it later.
          root.finishedWork = _finishedWork;
        }
      }
    }
  }

  isRendering = false;
}

function completeRoot(root, finishedWork, expirationTime) {
  // Check if there's a batch that matches this expiration time.
  var firstBatch = root.firstBatch;
  if (firstBatch !== null && firstBatch._expirationTime >= expirationTime) {
    if (completedBatches === null) {
      completedBatches = [firstBatch];
    } else {
      completedBatches.push(firstBatch);
    }
    if (firstBatch._defer) {
      // This root is blocked from committing by a batch. Unschedule it until
      // we receive another update.
      root.finishedWork = finishedWork;
      root.expirationTime = NoWork;
      return;
    }
  }

  // Commit the root.
  root.finishedWork = null;

  // Check if this is a nested update (a sync update scheduled during the
  // commit phase).
  if (root === lastCommittedRootDuringThisBatch) {
    // If the next root is the same as the previous root, this is a nested
    // update. To prevent an infinite loop, increment the nested update count.
    nestedUpdateCount++;
  } else {
    // Reset whenever we switch roots.
    lastCommittedRootDuringThisBatch = root;
    nestedUpdateCount = 0;
  }
  scheduler.unstable_runWithPriority(scheduler.unstable_ImmediatePriority, function () {
    commitRoot(root, finishedWork);
  });
}

function onUncaughtError(error) {
  !(nextFlushedRoot !== null) ? invariant(false, 'Should be working on a root. This error is likely caused by a bug in React. Please file an issue.') : void 0;
  // Unschedule this root so we don't work on it again until there's
  // another update.
  nextFlushedRoot.expirationTime = NoWork;
  if (!hasUnhandledError) {
    hasUnhandledError = true;
    unhandledError = error;
  }
}

// TODO: Batching should be implemented at the renderer level, not inside
// the reconciler.
function batchedUpdates$1(fn, a) {
  var previousIsBatchingUpdates = isBatchingUpdates;
  isBatchingUpdates = true;
  try {
    return fn(a);
  } finally {
    isBatchingUpdates = previousIsBatchingUpdates;
    if (!isBatchingUpdates && !isRendering) {
      performSyncWork();
    }
  }
}

// TODO: Batching should be implemented at the renderer level, not inside
// the reconciler.
function unbatchedUpdates(fn, a) {
  if (isBatchingUpdates && !isUnbatchingUpdates) {
    isUnbatchingUpdates = true;
    try {
      return fn(a);
    } finally {
      isUnbatchingUpdates = false;
    }
  }
  return fn(a);
}

// TODO: Batching should be implemented at the renderer level, not within
// the reconciler.
function flushSync(fn, a) {
  !!isRendering ? invariant(false, 'flushSync was called from inside a lifecycle method. It cannot be called when React is already rendering.') : void 0;
  var previousIsBatchingUpdates = isBatchingUpdates;
  isBatchingUpdates = true;
  try {
    return syncUpdates(fn, a);
  } finally {
    isBatchingUpdates = previousIsBatchingUpdates;
    performSyncWork();
  }
}

function interactiveUpdates$1(fn, a, b) {
  // If there are any pending interactive updates, synchronously flush them.
  // This needs to happen before we read any handlers, because the effect of
  // the previous event may influence which handlers are called during
  // this event.
  if (!isBatchingUpdates && !isRendering && lowestPriorityPendingInteractiveExpirationTime !== NoWork) {
    // Synchronously flush pending interactive updates.
    performWork(lowestPriorityPendingInteractiveExpirationTime, false);
    lowestPriorityPendingInteractiveExpirationTime = NoWork;
  }
  var previousIsBatchingUpdates = isBatchingUpdates;
  isBatchingUpdates = true;
  try {
    return scheduler.unstable_runWithPriority(scheduler.unstable_UserBlockingPriority, function () {
      return fn(a, b);
    });
  } finally {
    isBatchingUpdates = previousIsBatchingUpdates;
    if (!isBatchingUpdates && !isRendering) {
      performSyncWork();
    }
  }
}

function flushInteractiveUpdates$1() {
  if (!isRendering && lowestPriorityPendingInteractiveExpirationTime !== NoWork) {
    // Synchronously flush pending interactive updates.
    performWork(lowestPriorityPendingInteractiveExpirationTime, false);
    lowestPriorityPendingInteractiveExpirationTime = NoWork;
  }
}

function flushControlled(fn) {
  var previousIsBatchingUpdates = isBatchingUpdates;
  isBatchingUpdates = true;
  try {
    syncUpdates(fn);
  } finally {
    isBatchingUpdates = previousIsBatchingUpdates;
    if (!isBatchingUpdates && !isRendering) {
      performSyncWork();
    }
  }
}

// 0 is PROD, 1 is DEV.
// Might add PROFILE later.


var didWarnAboutNestedUpdates = void 0;
var didWarnAboutFindNodeInStrictMode = void 0;

{
  didWarnAboutNestedUpdates = false;
  didWarnAboutFindNodeInStrictMode = {};
}

function getContextForSubtree(parentComponent) {
  if (!parentComponent) {
    return emptyContextObject;
  }

  var fiber = get(parentComponent);
  var parentContext = findCurrentUnmaskedContext(fiber);

  if (fiber.tag === ClassComponent) {
    var Component = fiber.type;
    if (isContextProvider(Component)) {
      return processChildContext(fiber, Component, parentContext);
    }
  }

  return parentContext;
}

function scheduleRootUpdate(current$$1, element, expirationTime, callback) {
  {
    if (phase === 'render' && current !== null && !didWarnAboutNestedUpdates) {
      didWarnAboutNestedUpdates = true;
      warningWithoutStack$1(false, 'Render methods should be a pure function of props and state; ' + 'triggering nested component updates from render is not allowed. ' + 'If necessary, trigger nested updates in componentDidUpdate.\n\n' + 'Check the render method of %s.', getComponentName(current.type) || 'Unknown');
    }
  }

  var update = createUpdate(expirationTime);
  // Caution: React DevTools currently depends on this property
  // being called "element".
  update.payload = { element: element };

  callback = callback === undefined ? null : callback;
  if (callback !== null) {
    !(typeof callback === 'function') ? warningWithoutStack$1(false, 'render(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback) : void 0;
    update.callback = callback;
  }

  flushPassiveEffects();
  enqueueUpdate(current$$1, update);
  scheduleWork(current$$1, expirationTime);

  return expirationTime;
}

function updateContainerAtExpirationTime(element, container, parentComponent, expirationTime, callback) {
  // TODO: If this is a nested container, this won't be the root.
  var current$$1 = container.current;

  {
    if (ReactFiberInstrumentation_1.debugTool) {
      if (current$$1.alternate === null) {
        ReactFiberInstrumentation_1.debugTool.onMountContainer(container);
      } else if (element === null) {
        ReactFiberInstrumentation_1.debugTool.onUnmountContainer(container);
      } else {
        ReactFiberInstrumentation_1.debugTool.onUpdateContainer(container);
      }
    }
  }

  var context = getContextForSubtree(parentComponent);
  if (container.context === null) {
    container.context = context;
  } else {
    container.pendingContext = context;
  }

  return scheduleRootUpdate(current$$1, element, expirationTime, callback);
}

function findHostInstance(component) {
  var fiber = get(component);
  if (fiber === undefined) {
    if (typeof component.render === 'function') {
      invariant(false, 'Unable to find node on an unmounted component.');
    } else {
      invariant(false, 'Argument appears to not be a ReactComponent. Keys: %s', Object.keys(component));
    }
  }
  var hostFiber = findCurrentHostFiber(fiber);
  if (hostFiber === null) {
    return null;
  }
  return hostFiber.stateNode;
}

function findHostInstanceWithWarning(component, methodName) {
  {
    var fiber = get(component);
    if (fiber === undefined) {
      if (typeof component.render === 'function') {
        invariant(false, 'Unable to find node on an unmounted component.');
      } else {
        invariant(false, 'Argument appears to not be a ReactComponent. Keys: %s', Object.keys(component));
      }
    }
    var hostFiber = findCurrentHostFiber(fiber);
    if (hostFiber === null) {
      return null;
    }
    if (hostFiber.mode & StrictMode) {
      var componentName = getComponentName(fiber.type) || 'Component';
      if (!didWarnAboutFindNodeInStrictMode[componentName]) {
        didWarnAboutFindNodeInStrictMode[componentName] = true;
        if (fiber.mode & StrictMode) {
          warningWithoutStack$1(false, '%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which is inside StrictMode. ' + 'Instead, add a ref directly to the element you want to reference.' + '\n%s' + '\n\nLearn more about using refs safely here:' + '\nhttps://fb.me/react-strict-mode-find-node', methodName, methodName, componentName, getStackByFiberInDevAndProd(hostFiber));
        } else {
          warningWithoutStack$1(false, '%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which renders StrictMode children. ' + 'Instead, add a ref directly to the element you want to reference.' + '\n%s' + '\n\nLearn more about using refs safely here:' + '\nhttps://fb.me/react-strict-mode-find-node', methodName, methodName, componentName, getStackByFiberInDevAndProd(hostFiber));
        }
      }
    }
    return hostFiber.stateNode;
  }
  return findHostInstance(component);
}

function createContainer(containerInfo, isConcurrent, hydrate) {
  return createFiberRoot(containerInfo, isConcurrent, hydrate);
}

function updateContainer(element, container, parentComponent, callback) {
  var current$$1 = container.current;
  var currentTime = requestCurrentTime();
  var expirationTime = computeExpirationForFiber(currentTime, current$$1);
  return updateContainerAtExpirationTime(element, container, parentComponent, expirationTime, callback);
}

function getPublicRootInstance(container) {
  var containerFiber = container.current;
  if (!containerFiber.child) {
    return null;
  }
  switch (containerFiber.child.tag) {
    case HostComponent:
      return getPublicInstance(containerFiber.child.stateNode);
    default:
      return containerFiber.child.stateNode;
  }
}

function findHostInstanceWithNoPortals(fiber) {
  var hostFiber = findCurrentHostFiberWithNoPortals(fiber);
  if (hostFiber === null) {
    return null;
  }
  return hostFiber.stateNode;
}

var overrideProps = null;

{
  var copyWithSetImpl = function (obj, path, idx, value) {
    if (idx >= path.length) {
      return value;
    }
    var key = path[idx];
    var updated = Array.isArray(obj) ? obj.slice() : _assign({}, obj);
    // $FlowFixMe number or string is fine here
    updated[key] = copyWithSetImpl(obj[key], path, idx + 1, value);
    return updated;
  };

  var copyWithSet = function (obj, path, value) {
    return copyWithSetImpl(obj, path, 0, value);
  };

  // Support DevTools props for function components, forwardRef, memo, host components, etc.
  overrideProps = function (fiber, path, value) {
    flushPassiveEffects();
    fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value);
    if (fiber.alternate) {
      fiber.alternate.pendingProps = fiber.pendingProps;
    }
    scheduleWork(fiber, Sync);
  };
}

function injectIntoDevTools(devToolsConfig) {
  var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance;
  var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;


  return injectInternals(_assign({}, devToolsConfig, {
    overrideProps: overrideProps,
    currentDispatcherRef: ReactCurrentDispatcher,
    findHostInstanceByFiber: function (fiber) {
      var hostFiber = findCurrentHostFiber(fiber);
      if (hostFiber === null) {
        return null;
      }
      return hostFiber.stateNode;
    },
    findFiberByHostInstance: function (instance) {
      if (!findFiberByHostInstance) {
        // Might not be implemented by the renderer.
        return null;
      }
      return findFiberByHostInstance(instance);
    }
  }));
}

// This file intentionally does *not* have the Flow annotation.
// Don't add it. See `./inline-typed.js` for an explanation.

function createPortal$1(children, containerInfo,
// TODO: figure out the API for cross-renderer implementation.
implementation) {
  var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;

  return {
    // This tag allow us to uniquely identify this as a React Portal
    $$typeof: REACT_PORTAL_TYPE,
    key: key == null ? null : '' + key,
    children: children,
    containerInfo: containerInfo,
    implementation: implementation
  };
}

// TODO: this is special because it gets imported during build.

var ReactVersion = '16.8.3';

// TODO: This type is shared between the reconciler and ReactDOM, but will
// eventually be lifted out to the renderer.

var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;

var topLevelUpdateWarnings = void 0;
var warnOnInvalidCallback = void 0;
var didWarnAboutUnstableCreatePortal = false;

{
  if (typeof Map !== 'function' ||
  // $FlowIssue Flow incorrectly thinks Map has no prototype
  Map.prototype == null || typeof Map.prototype.forEach !== 'function' || typeof Set !== 'function' ||
  // $FlowIssue Flow incorrectly thinks Set has no prototype
  Set.prototype == null || typeof Set.prototype.clear !== 'function' || typeof Set.prototype.forEach !== 'function') {
    warningWithoutStack$1(false, 'React depends on Map and Set built-in types. Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
  }

  topLevelUpdateWarnings = function (container) {
    if (container._reactRootContainer && container.nodeType !== COMMENT_NODE) {
      var hostInstance = findHostInstanceWithNoPortals(container._reactRootContainer._internalRoot.current);
      if (hostInstance) {
        !(hostInstance.parentNode === container) ? warningWithoutStack$1(false, 'render(...): It looks like the React-rendered content of this ' + 'container was removed without using React. This is not ' + 'supported and will cause errors. Instead, call ' + 'ReactDOM.unmountComponentAtNode to empty a container.') : void 0;
      }
    }

    var isRootRenderedBySomeReact = !!container._reactRootContainer;
    var rootEl = getReactRootElementInContainer(container);
    var hasNonRootReactChild = !!(rootEl && getInstanceFromNode$1(rootEl));

    !(!hasNonRootReactChild || isRootRenderedBySomeReact) ? warningWithoutStack$1(false, 'render(...): Replacing React-rendered children with a new root ' + 'component. If you intended to update the children of this node, ' + 'you should instead have the existing children update their state ' + 'and render the new components instead of calling ReactDOM.render.') : void 0;

    !(container.nodeType !== ELEMENT_NODE || !container.tagName || container.tagName.toUpperCase() !== 'BODY') ? warningWithoutStack$1(false, 'render(): Rendering components directly into document.body is ' + 'discouraged, since its children are often manipulated by third-party ' + 'scripts and browser extensions. This may lead to subtle ' + 'reconciliation issues. Try rendering into a container element created ' + 'for your app.') : void 0;
  };

  warnOnInvalidCallback = function (callback, callerName) {
    !(callback === null || typeof callback === 'function') ? warningWithoutStack$1(false, '%s(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callerName, callback) : void 0;
  };
}

setRestoreImplementation(restoreControlledState$1);

function ReactBatch(root) {
  var expirationTime = computeUniqueAsyncExpiration();
  this._expirationTime = expirationTime;
  this._root = root;
  this._next = null;
  this._callbacks = null;
  this._didComplete = false;
  this._hasChildren = false;
  this._children = null;
  this._defer = true;
}
ReactBatch.prototype.render = function (children) {
  !this._defer ? invariant(false, 'batch.render: Cannot render a batch that already committed.') : void 0;
  this._hasChildren = true;
  this._children = children;
  var internalRoot = this._root._internalRoot;
  var expirationTime = this._expirationTime;
  var work = new ReactWork();
  updateContainerAtExpirationTime(children, internalRoot, null, expirationTime, work._onCommit);
  return work;
};
ReactBatch.prototype.then = function (onComplete) {
  if (this._didComplete) {
    onComplete();
    return;
  }
  var callbacks = this._callbacks;
  if (callbacks === null) {
    callbacks = this._callbacks = [];
  }
  callbacks.push(onComplete);
};
ReactBatch.prototype.commit = function () {
  var internalRoot = this._root._internalRoot;
  var firstBatch = internalRoot.firstBatch;
  !(this._defer && firstBatch !== null) ? invariant(false, 'batch.commit: Cannot commit a batch multiple times.') : void 0;

  if (!this._hasChildren) {
    // This batch is empty. Return.
    this._next = null;
    this._defer = false;
    return;
  }

  var expirationTime = this._expirationTime;

  // Ensure this is the first batch in the list.
  if (firstBatch !== this) {
    // This batch is not the earliest batch. We need to move it to the front.
    // Update its expiration time to be the expiration time of the earliest
    // batch, so that we can flush it without flushing the other batches.
    if (this._hasChildren) {
      expirationTime = this._expirationTime = firstBatch._expirationTime;
      // Rendering this batch again ensures its children will be the final state
      // when we flush (updates are processed in insertion order: last
      // update wins).
      // TODO: This forces a restart. Should we print a warning?
      this.render(this._children);
    }

    // Remove the batch from the list.
    var previous = null;
    var batch = firstBatch;
    while (batch !== this) {
      previous = batch;
      batch = batch._next;
    }
    !(previous !== null) ? invariant(false, 'batch.commit: Cannot commit a batch multiple times.') : void 0;
    previous._next = batch._next;

    // Add it to the front.
    this._next = firstBatch;
    firstBatch = internalRoot.firstBatch = this;
  }

  // Synchronously flush all the work up to this batch's expiration time.
  this._defer = false;
  flushRoot(internalRoot, expirationTime);

  // Pop the batch from the list.
  var next = this._next;
  this._next = null;
  firstBatch = internalRoot.firstBatch = next;

  // Append the next earliest batch's children to the update queue.
  if (firstBatch !== null && firstBatch._hasChildren) {
    firstBatch.render(firstBatch._children);
  }
};
ReactBatch.prototype._onComplete = function () {
  if (this._didComplete) {
    return;
  }
  this._didComplete = true;
  var callbacks = this._callbacks;
  if (callbacks === null) {
    return;
  }
  // TODO: Error handling.
  for (var i = 0; i < callbacks.length; i++) {
    var _callback = callbacks[i];
    _callback();
  }
};

function ReactWork() {
  this._callbacks = null;
  this._didCommit = false;
  // TODO: Avoid need to bind by replacing callbacks in the update queue with
  // list of Work objects.
  this._onCommit = this._onCommit.bind(this);
}
ReactWork.prototype.then = function (onCommit) {
  if (this._didCommit) {
    onCommit();
    return;
  }
  var callbacks = this._callbacks;
  if (callbacks === null) {
    callbacks = this._callbacks = [];
  }
  callbacks.push(onCommit);
};
ReactWork.prototype._onCommit = function () {
  if (this._didCommit) {
    return;
  }
  this._didCommit = true;
  var callbacks = this._callbacks;
  if (callbacks === null) {
    return;
  }
  // TODO: Error handling.
  for (var i = 0; i < callbacks.length; i++) {
    var _callback2 = callbacks[i];
    !(typeof _callback2 === 'function') ? invariant(false, 'Invalid argument passed as callback. Expected a function. Instead received: %s', _callback2) : void 0;
    _callback2();
  }
};

function ReactRoot(container, isConcurrent, hydrate) {
  var root = createContainer(container, isConcurrent, hydrate);
  this._internalRoot = root;
}
ReactRoot.prototype.render = function (children, callback) {
  var root = this._internalRoot;
  var work = new ReactWork();
  callback = callback === undefined ? null : callback;
  {
    warnOnInvalidCallback(callback, 'render');
  }
  if (callback !== null) {
    work.then(callback);
  }
  updateContainer(children, root, null, work._onCommit);
  return work;
};
ReactRoot.prototype.unmount = function (callback) {
  var root = this._internalRoot;
  var work = new ReactWork();
  callback = callback === undefined ? null : callback;
  {
    warnOnInvalidCallback(callback, 'render');
  }
  if (callback !== null) {
    work.then(callback);
  }
  updateContainer(null, root, null, work._onCommit);
  return work;
};
ReactRoot.prototype.legacy_renderSubtreeIntoContainer = function (parentComponent, children, callback) {
  var root = this._internalRoot;
  var work = new ReactWork();
  callback = callback === undefined ? null : callback;
  {
    warnOnInvalidCallback(callback, 'render');
  }
  if (callback !== null) {
    work.then(callback);
  }
  updateContainer(children, root, parentComponent, work._onCommit);
  return work;
};
ReactRoot.prototype.createBatch = function () {
  var batch = new ReactBatch(this);
  var expirationTime = batch._expirationTime;

  var internalRoot = this._internalRoot;
  var firstBatch = internalRoot.firstBatch;
  if (firstBatch === null) {
    internalRoot.firstBatch = batch;
    batch._next = null;
  } else {
    // Insert sorted by expiration time then insertion order
    var insertAfter = null;
    var insertBefore = firstBatch;
    while (insertBefore !== null && insertBefore._expirationTime >= expirationTime) {
      insertAfter = insertBefore;
      insertBefore = insertBefore._next;
    }
    batch._next = insertBefore;
    if (insertAfter !== null) {
      insertAfter._next = batch;
    }
  }

  return batch;
};

/**
 * True if the supplied DOM node is a valid node element.
 *
 * @param {?DOMElement} node The candidate DOM node.
 * @return {boolean} True if the DOM is a valid DOM node.
 * @internal
 */
function isValidContainer(node) {
  return !!(node && (node.nodeType === ELEMENT_NODE || node.nodeType === DOCUMENT_NODE || node.nodeType === DOCUMENT_FRAGMENT_NODE || node.nodeType === COMMENT_NODE && node.nodeValue === ' react-mount-point-unstable '));
}

function getReactRootElementInContainer(container) {
  if (!container) {
    return null;
  }

  if (container.nodeType === DOCUMENT_NODE) {
    return container.documentElement;
  } else {
    return container.firstChild;
  }
}

function shouldHydrateDueToLegacyHeuristic(container) {
  var rootElement = getReactRootElementInContainer(container);
  return !!(rootElement && rootElement.nodeType === ELEMENT_NODE && rootElement.hasAttribute(ROOT_ATTRIBUTE_NAME));
}

setBatchingImplementation(batchedUpdates$1, interactiveUpdates$1, flushInteractiveUpdates$1);

var warnedAboutHydrateAPI = false;

function legacyCreateRootFromDOMContainer(container, forceHydrate) {
  var shouldHydrate = forceHydrate || shouldHydrateDueToLegacyHeuristic(container);
  // First clear any existing content.
  if (!shouldHydrate) {
    var warned = false;
    var rootSibling = void 0;
    while (rootSibling = container.lastChild) {
      {
        if (!warned && rootSibling.nodeType === ELEMENT_NODE && rootSibling.hasAttribute(ROOT_ATTRIBUTE_NAME)) {
          warned = true;
          warningWithoutStack$1(false, 'render(): Target node has markup rendered by React, but there ' + 'are unrelated nodes as well. This is most commonly caused by ' + 'white-space inserted around server-rendered markup.');
        }
      }
      container.removeChild(rootSibling);
    }
  }
  {
    if (shouldHydrate && !forceHydrate && !warnedAboutHydrateAPI) {
      warnedAboutHydrateAPI = true;
      lowPriorityWarning$1(false, 'render(): Calling ReactDOM.render() to hydrate server-rendered markup ' + 'will stop working in React v17. Replace the ReactDOM.render() call ' + 'with ReactDOM.hydrate() if you want React to attach to the server HTML.');
    }
  }
  // Legacy roots are not async by default.
  var isConcurrent = false;
  return new ReactRoot(container, isConcurrent, shouldHydrate);
}

function legacyRenderSubtreeIntoContainer(parentComponent, children, container, forceHydrate, callback) {
  {
    topLevelUpdateWarnings(container);
  }

  // TODO: Without `any` type, Flow says "Property cannot be accessed on any
  // member of intersection type." Whyyyyyy.
  var root = container._reactRootContainer;
  if (!root) {
    // Initial mount
    root = container._reactRootContainer = legacyCreateRootFromDOMContainer(container, forceHydrate);
    if (typeof callback === 'function') {
      var originalCallback = callback;
      callback = function () {
        var instance = getPublicRootInstance(root._internalRoot);
        originalCallback.call(instance);
      };
    }
    // Initial mount should not be batched.
    unbatchedUpdates(function () {
      if (parentComponent != null) {
        root.legacy_renderSubtreeIntoContainer(parentComponent, children, callback);
      } else {
        root.render(children, callback);
      }
    });
  } else {
    if (typeof callback === 'function') {
      var _originalCallback = callback;
      callback = function () {
        var instance = getPublicRootInstance(root._internalRoot);
        _originalCallback.call(instance);
      };
    }
    // Update
    if (parentComponent != null) {
      root.legacy_renderSubtreeIntoContainer(parentComponent, children, callback);
    } else {
      root.render(children, callback);
    }
  }
  return getPublicRootInstance(root._internalRoot);
}

function createPortal$$1(children, container) {
  var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;

  !isValidContainer(container) ? invariant(false, 'Target container is not a DOM element.') : void 0;
  // TODO: pass ReactDOM portal implementation as third argument
  return createPortal$1(children, container, null, key);
}

var ReactDOM = {
  createPortal: createPortal$$1,

  findDOMNode: function (componentOrElement) {
    {
      var owner = ReactCurrentOwner.current;
      if (owner !== null && owner.stateNode !== null) {
        var warnedAboutRefsInRender = owner.stateNode._warnedAboutRefsInRender;
        !warnedAboutRefsInRender ? warningWithoutStack$1(false, '%s is accessing findDOMNode inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(owner.type) || 'A component') : void 0;
        owner.stateNode._warnedAboutRefsInRender = true;
      }
    }
    if (componentOrElement == null) {
      return null;
    }
    if (componentOrElement.nodeType === ELEMENT_NODE) {
      return componentOrElement;
    }
    {
      return findHostInstanceWithWarning(componentOrElement, 'findDOMNode');
    }
    return findHostInstance(componentOrElement);
  },
  hydrate: function (element, container, callback) {
    !isValidContainer(container) ? invariant(false, 'Target container is not a DOM element.') : void 0;
    {
      !!container._reactHasBeenPassedToCreateRootDEV ? warningWithoutStack$1(false, 'You are calling ReactDOM.hydrate() on a container that was previously ' + 'passed to ReactDOM.%s(). This is not supported. ' + 'Did you mean to call createRoot(container, {hydrate: true}).render(element)?', enableStableConcurrentModeAPIs ? 'createRoot' : 'unstable_createRoot') : void 0;
    }
    // TODO: throw or warn if we couldn't hydrate?
    return legacyRenderSubtreeIntoContainer(null, element, container, true, callback);
  },
  render: function (element, container, callback) {
    !isValidContainer(container) ? invariant(false, 'Target container is not a DOM element.') : void 0;
    {
      !!container._reactHasBeenPassedToCreateRootDEV ? warningWithoutStack$1(false, 'You are calling ReactDOM.render() on a container that was previously ' + 'passed to ReactDOM.%s(). This is not supported. ' + 'Did you mean to call root.render(element)?', enableStableConcurrentModeAPIs ? 'createRoot' : 'unstable_createRoot') : void 0;
    }
    return legacyRenderSubtreeIntoContainer(null, element, container, false, callback);
  },
  unstable_renderSubtreeIntoContainer: function (parentComponent, element, containerNode, callback) {
    !isValidContainer(containerNode) ? invariant(false, 'Target container is not a DOM element.') : void 0;
    !(parentComponent != null && has(parentComponent)) ? invariant(false, 'parentComponent must be a valid React Component') : void 0;
    return legacyRenderSubtreeIntoContainer(parentComponent, element, containerNode, false, callback);
  },
  unmountComponentAtNode: function (container) {
    !isValidContainer(container) ? invariant(false, 'unmountComponentAtNode(...): Target container is not a DOM element.') : void 0;

    {
      !!container._reactHasBeenPassedToCreateRootDEV ? warningWithoutStack$1(false, 'You are calling ReactDOM.unmountComponentAtNode() on a container that was previously ' + 'passed to ReactDOM.%s(). This is not supported. Did you mean to call root.unmount()?', enableStableConcurrentModeAPIs ? 'createRoot' : 'unstable_createRoot') : void 0;
    }

    if (container._reactRootContainer) {
      {
        var rootEl = getReactRootElementInContainer(container);
        var renderedByDifferentReact = rootEl && !getInstanceFromNode$1(rootEl);
        !!renderedByDifferentReact ? warningWithoutStack$1(false, "unmountComponentAtNode(): The node you're attempting to unmount " + 'was rendered by another copy of React.') : void 0;
      }

      // Unmount should not be batched.
      unbatchedUpdates(function () {
        legacyRenderSubtreeIntoContainer(null, null, container, false, function () {
          container._reactRootContainer = null;
        });
      });
      // If you call unmountComponentAtNode twice in quick succession, you'll
      // get `true` twice. That's probably fine?
      return true;
    } else {
      {
        var _rootEl = getReactRootElementInContainer(container);
        var hasNonRootReactChild = !!(_rootEl && getInstanceFromNode$1(_rootEl));

        // Check if the container itself is a React root node.
        var isContainerReactRoot = container.nodeType === ELEMENT_NODE && isValidContainer(container.parentNode) && !!container.parentNode._reactRootContainer;

        !!hasNonRootReactChild ? warningWithoutStack$1(false, "unmountComponentAtNode(): The node you're attempting to unmount " + 'was rendered by React and is not a top-level container. %s', isContainerReactRoot ? 'You may have accidentally passed in a React root node instead ' + 'of its container.' : 'Instead, have the parent component update its state and ' + 'rerender in order to remove this component.') : void 0;
      }

      return false;
    }
  },


  // Temporary alias since we already shipped React 16 RC with it.
  // TODO: remove in React 17.
  unstable_createPortal: function () {
    if (!didWarnAboutUnstableCreatePortal) {
      didWarnAboutUnstableCreatePortal = true;
      lowPriorityWarning$1(false, 'The ReactDOM.unstable_createPortal() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactDOM.createPortal() instead. It has the exact same API, ' + 'but without the "unstable_" prefix.');
    }
    return createPortal$$1.apply(undefined, arguments);
  },


  unstable_batchedUpdates: batchedUpdates$1,

  unstable_interactiveUpdates: interactiveUpdates$1,

  flushSync: flushSync,

  unstable_createRoot: createRoot,
  unstable_flushControlled: flushControlled,

  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: {
    // Keep in sync with ReactDOMUnstableNativeDependencies.js
    // and ReactTestUtils.js. This is an array for better minification.
    Events: [getInstanceFromNode$1, getNodeFromInstance$1, getFiberCurrentPropsFromNode$1, injection.injectEventPluginsByName, eventNameDispatchConfigs, accumulateTwoPhaseDispatches, accumulateDirectDispatches, enqueueStateRestore, restoreStateIfNeeded, dispatchEvent, runEventsInBatch]
  }
};

function createRoot(container, options) {
  var functionName = enableStableConcurrentModeAPIs ? 'createRoot' : 'unstable_createRoot';
  !isValidContainer(container) ? invariant(false, '%s(...): Target container is not a DOM element.', functionName) : void 0;
  {
    !!container._reactRootContainer ? warningWithoutStack$1(false, 'You are calling ReactDOM.%s() on a container that was previously ' + 'passed to ReactDOM.render(). This is not supported.', enableStableConcurrentModeAPIs ? 'createRoot' : 'unstable_createRoot') : void 0;
    container._reactHasBeenPassedToCreateRootDEV = true;
  }
  var hydrate = options != null && options.hydrate === true;
  return new ReactRoot(container, true, hydrate);
}

if (enableStableConcurrentModeAPIs) {
  ReactDOM.createRoot = createRoot;
  ReactDOM.unstable_createRoot = undefined;
}

var foundDevTools = injectIntoDevTools({
  findFiberByHostInstance: getClosestInstanceFromNode,
  bundleType: 1,
  version: ReactVersion,
  rendererPackageName: 'react-dom'
});

{
  if (!foundDevTools && canUseDOM && window.top === window.self) {
    // If we're in Chrome or Firefox, provide a download link if not installed.
    if (navigator.userAgent.indexOf('Chrome') > -1 && navigator.userAgent.indexOf('Edge') === -1 || navigator.userAgent.indexOf('Firefox') > -1) {
      var protocol = window.location.protocol;
      // Don't warn in exotic cases like chrome-extension://.
      if (/^(https?|file):$/.test(protocol)) {
        console.info('%cDownload the React DevTools ' + 'for a better development experience: ' + 'https://fb.me/react-devtools' + (protocol === 'file:' ? '\nYou might need to use a local HTTP server (instead of file://): ' + 'https://fb.me/react-devtools-faq' : ''), 'font-weight:bold');
      }
    }
  }
}



var ReactDOM$2 = Object.freeze({
	default: ReactDOM
});

var ReactDOM$3 = ( ReactDOM$2 && ReactDOM ) || ReactDOM$2;

// TODO: decide on the top-level export form.
// This is hacky but makes it work with both Rollup and Jest.
var reactDom = ReactDOM$3.default || ReactDOM$3;

module.exports = reactDom;
  })();
}


/***/ }),
/* 647 */
/*!*************************************************************!*\
  !*** ./node_modules/prop-types/lib/ReactPropTypesSecret.js ***!
  \*************************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */



var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';

module.exports = ReactPropTypesSecret;


/***/ }),
/* 648 */
/*!*****************************************************!*\
  !*** ./node_modules/react/cjs/react.development.js ***!
  \*****************************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/** @license React v16.8.3
 * react.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */





if (true) {
  (function() {
'use strict';

var _assign = __webpack_require__(/*! object-assign */ 250);
var checkPropTypes = __webpack_require__(/*! prop-types/checkPropTypes */ 249);

// TODO: this is special because it gets imported during build.

var ReactVersion = '16.8.3';

// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
// nor polyfill, then a plain number is used for performance.
var hasSymbol = typeof Symbol === 'function' && Symbol.for;

var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace;

var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;

var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
var FAUX_ITERATOR_SYMBOL = '@@iterator';

function getIteratorFn(maybeIterable) {
  if (maybeIterable === null || typeof maybeIterable !== 'object') {
    return null;
  }
  var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
  if (typeof maybeIterator === 'function') {
    return maybeIterator;
  }
  return null;
}

/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

var validateFormat = function () {};

{
  validateFormat = function (format) {
    if (format === undefined) {
      throw new Error('invariant requires an error message argument');
    }
  };
}

function invariant(condition, format, a, b, c, d, e, f) {
  validateFormat(format);

  if (!condition) {
    var error = void 0;
    if (format === undefined) {
      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');
    } else {
      var args = [a, b, c, d, e, f];
      var argIndex = 0;
      error = new Error(format.replace(/%s/g, function () {
        return args[argIndex++];
      }));
      error.name = 'Invariant Violation';
    }

    error.framesToPop = 1; // we don't care about invariant's own frame
    throw error;
  }
}

// Relying on the `invariant()` implementation lets us
// preserve the format and params in the www builds.

/**
 * Forked from fbjs/warning:
 * https://github.com/facebook/fbjs/blob/e66ba20ad5be433eb54423f2b097d829324d9de6/packages/fbjs/src/__forks__/warning.js
 *
 * Only change is we use console.warn instead of console.error,
 * and do nothing when 'console' is not supported.
 * This really simplifies the code.
 * ---
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var lowPriorityWarning = function () {};

{
  var printWarning = function (format) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    var argIndex = 0;
    var message = 'Warning: ' + format.replace(/%s/g, function () {
      return args[argIndex++];
    });
    if (typeof console !== 'undefined') {
      console.warn(message);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      throw new Error(message);
    } catch (x) {}
  };

  lowPriorityWarning = function (condition, format) {
    if (format === undefined) {
      throw new Error('`lowPriorityWarning(condition, format, ...args)` requires a warning ' + 'message argument');
    }
    if (!condition) {
      for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
        args[_key2 - 2] = arguments[_key2];
      }

      printWarning.apply(undefined, [format].concat(args));
    }
  };
}

var lowPriorityWarning$1 = lowPriorityWarning;

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warningWithoutStack = function () {};

{
  warningWithoutStack = function (condition, format) {
    for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
      args[_key - 2] = arguments[_key];
    }

    if (format === undefined) {
      throw new Error('`warningWithoutStack(condition, format, ...args)` requires a warning ' + 'message argument');
    }
    if (args.length > 8) {
      // Check before the condition to catch violations early.
      throw new Error('warningWithoutStack() currently supports at most 8 arguments.');
    }
    if (condition) {
      return;
    }
    if (typeof console !== 'undefined') {
      var argsWithFormat = args.map(function (item) {
        return '' + item;
      });
      argsWithFormat.unshift('Warning: ' + format);

      // We intentionally don't use spread (or .apply) directly because it
      // breaks IE9: https://github.com/facebook/react/issues/13610
      Function.prototype.apply.call(console.error, console, argsWithFormat);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      var argIndex = 0;
      var message = 'Warning: ' + format.replace(/%s/g, function () {
        return args[argIndex++];
      });
      throw new Error(message);
    } catch (x) {}
  };
}

var warningWithoutStack$1 = warningWithoutStack;

var didWarnStateUpdateForUnmountedComponent = {};

function warnNoop(publicInstance, callerName) {
  {
    var _constructor = publicInstance.constructor;
    var componentName = _constructor && (_constructor.displayName || _constructor.name) || 'ReactClass';
    var warningKey = componentName + '.' + callerName;
    if (didWarnStateUpdateForUnmountedComponent[warningKey]) {
      return;
    }
    warningWithoutStack$1(false, "Can't call %s on a component that is not yet mounted. " + 'This is a no-op, but it might indicate a bug in your application. ' + 'Instead, assign to `this.state` directly or define a `state = {};` ' + 'class property with the desired state in the %s component.', callerName, componentName);
    didWarnStateUpdateForUnmountedComponent[warningKey] = true;
  }
}

/**
 * This is the abstract API for an update queue.
 */
var ReactNoopUpdateQueue = {
  /**
   * Checks whether or not this composite component is mounted.
   * @param {ReactClass} publicInstance The instance we want to test.
   * @return {boolean} True if mounted, false otherwise.
   * @protected
   * @final
   */
  isMounted: function (publicInstance) {
    return false;
  },

  /**
   * Forces an update. This should only be invoked when it is known with
   * certainty that we are **not** in a DOM transaction.
   *
   * You may want to call this when you know that some deeper aspect of the
   * component's state has changed but `setState` was not called.
   *
   * This will not invoke `shouldComponentUpdate`, but it will invoke
   * `componentWillUpdate` and `componentDidUpdate`.
   *
   * @param {ReactClass} publicInstance The instance that should rerender.
   * @param {?function} callback Called after component is updated.
   * @param {?string} callerName name of the calling function in the public API.
   * @internal
   */
  enqueueForceUpdate: function (publicInstance, callback, callerName) {
    warnNoop(publicInstance, 'forceUpdate');
  },

  /**
   * Replaces all of the state. Always use this or `setState` to mutate state.
   * You should treat `this.state` as immutable.
   *
   * There is no guarantee that `this.state` will be immediately updated, so
   * accessing `this.state` after calling this method may return the old value.
   *
   * @param {ReactClass} publicInstance The instance that should rerender.
   * @param {object} completeState Next state.
   * @param {?function} callback Called after component is updated.
   * @param {?string} callerName name of the calling function in the public API.
   * @internal
   */
  enqueueReplaceState: function (publicInstance, completeState, callback, callerName) {
    warnNoop(publicInstance, 'replaceState');
  },

  /**
   * Sets a subset of the state. This only exists because _pendingState is
   * internal. This provides a merging strategy that is not available to deep
   * properties which is confusing. TODO: Expose pendingState or don't use it
   * during the merge.
   *
   * @param {ReactClass} publicInstance The instance that should rerender.
   * @param {object} partialState Next partial state to be merged with state.
   * @param {?function} callback Called after component is updated.
   * @param {?string} Name of the calling function in the public API.
   * @internal
   */
  enqueueSetState: function (publicInstance, partialState, callback, callerName) {
    warnNoop(publicInstance, 'setState');
  }
};

var emptyObject = {};
{
  Object.freeze(emptyObject);
}

/**
 * Base class helpers for the updating state of a component.
 */
function Component(props, context, updater) {
  this.props = props;
  this.context = context;
  // If a component has string refs, we will assign a different object later.
  this.refs = emptyObject;
  // We initialize the default updater but the real one gets injected by the
  // renderer.
  this.updater = updater || ReactNoopUpdateQueue;
}

Component.prototype.isReactComponent = {};

/**
 * Sets a subset of the state. Always use this to mutate
 * state. You should treat `this.state` as immutable.
 *
 * There is no guarantee that `this.state` will be immediately updated, so
 * accessing `this.state` after calling this method may return the old value.
 *
 * There is no guarantee that calls to `setState` will run synchronously,
 * as they may eventually be batched together.  You can provide an optional
 * callback that will be executed when the call to setState is actually
 * completed.
 *
 * When a function is provided to setState, it will be called at some point in
 * the future (not synchronously). It will be called with the up to date
 * component arguments (state, props, context). These values can be different
 * from this.* because your function may be called after receiveProps but before
 * shouldComponentUpdate, and this new state, props, and context will not yet be
 * assigned to this.
 *
 * @param {object|function} partialState Next partial state or function to
 *        produce next partial state to be merged with current state.
 * @param {?function} callback Called after state is updated.
 * @final
 * @protected
 */
Component.prototype.setState = function (partialState, callback) {
  !(typeof partialState === 'object' || typeof partialState === 'function' || partialState == null) ? invariant(false, 'setState(...): takes an object of state variables to update or a function which returns an object of state variables.') : void 0;
  this.updater.enqueueSetState(this, partialState, callback, 'setState');
};

/**
 * Forces an update. This should only be invoked when it is known with
 * certainty that we are **not** in a DOM transaction.
 *
 * You may want to call this when you know that some deeper aspect of the
 * component's state has changed but `setState` was not called.
 *
 * This will not invoke `shouldComponentUpdate`, but it will invoke
 * `componentWillUpdate` and `componentDidUpdate`.
 *
 * @param {?function} callback Called after update is complete.
 * @final
 * @protected
 */
Component.prototype.forceUpdate = function (callback) {
  this.updater.enqueueForceUpdate(this, callback, 'forceUpdate');
};

/**
 * Deprecated APIs. These APIs used to exist on classic React classes but since
 * we would like to deprecate them, we're not going to move them over to this
 * modern base class. Instead, we define a getter that warns if it's accessed.
 */
{
  var deprecatedAPIs = {
    isMounted: ['isMounted', 'Instead, make sure to clean up subscriptions and pending requests in ' + 'componentWillUnmount to prevent memory leaks.'],
    replaceState: ['replaceState', 'Refactor your code to use setState instead (see ' + 'https://github.com/facebook/react/issues/3236).']
  };
  var defineDeprecationWarning = function (methodName, info) {
    Object.defineProperty(Component.prototype, methodName, {
      get: function () {
        lowPriorityWarning$1(false, '%s(...) is deprecated in plain JavaScript React classes. %s', info[0], info[1]);
        return undefined;
      }
    });
  };
  for (var fnName in deprecatedAPIs) {
    if (deprecatedAPIs.hasOwnProperty(fnName)) {
      defineDeprecationWarning(fnName, deprecatedAPIs[fnName]);
    }
  }
}

function ComponentDummy() {}
ComponentDummy.prototype = Component.prototype;

/**
 * Convenience component with default shallow equality check for sCU.
 */
function PureComponent(props, context, updater) {
  this.props = props;
  this.context = context;
  // If a component has string refs, we will assign a different object later.
  this.refs = emptyObject;
  this.updater = updater || ReactNoopUpdateQueue;
}

var pureComponentPrototype = PureComponent.prototype = new ComponentDummy();
pureComponentPrototype.constructor = PureComponent;
// Avoid an extra prototype jump for these methods.
_assign(pureComponentPrototype, Component.prototype);
pureComponentPrototype.isPureReactComponent = true;

// an immutable object with a single mutable value
function createRef() {
  var refObject = {
    current: null
  };
  {
    Object.seal(refObject);
  }
  return refObject;
}

/**
 * Keeps track of the current dispatcher.
 */
var ReactCurrentDispatcher = {
  /**
   * @internal
   * @type {ReactComponent}
   */
  current: null
};

/**
 * Keeps track of the current owner.
 *
 * The current owner is the component who should own any components that are
 * currently being constructed.
 */
var ReactCurrentOwner = {
  /**
   * @internal
   * @type {ReactComponent}
   */
  current: null
};

var BEFORE_SLASH_RE = /^(.*)[\\\/]/;

var describeComponentFrame = function (name, source, ownerName) {
  var sourceInfo = '';
  if (source) {
    var path = source.fileName;
    var fileName = path.replace(BEFORE_SLASH_RE, '');
    {
      // In DEV, include code for a common special case:
      // prefer "folder/index.js" instead of just "index.js".
      if (/^index\./.test(fileName)) {
        var match = path.match(BEFORE_SLASH_RE);
        if (match) {
          var pathBeforeSlash = match[1];
          if (pathBeforeSlash) {
            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
            fileName = folderName + '/' + fileName;
          }
        }
      }
    }
    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
  } else if (ownerName) {
    sourceInfo = ' (created by ' + ownerName + ')';
  }
  return '\n    in ' + (name || 'Unknown') + sourceInfo;
};

var Resolved = 1;


function refineResolvedLazyComponent(lazyComponent) {
  return lazyComponent._status === Resolved ? lazyComponent._result : null;
}

function getWrappedName(outerType, innerType, wrapperName) {
  var functionName = innerType.displayName || innerType.name || '';
  return outerType.displayName || (functionName !== '' ? wrapperName + '(' + functionName + ')' : wrapperName);
}

function getComponentName(type) {
  if (type == null) {
    // Host root, text node or just invalid type.
    return null;
  }
  {
    if (typeof type.tag === 'number') {
      warningWithoutStack$1(false, 'Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
    }
  }
  if (typeof type === 'function') {
    return type.displayName || type.name || null;
  }
  if (typeof type === 'string') {
    return type;
  }
  switch (type) {
    case REACT_CONCURRENT_MODE_TYPE:
      return 'ConcurrentMode';
    case REACT_FRAGMENT_TYPE:
      return 'Fragment';
    case REACT_PORTAL_TYPE:
      return 'Portal';
    case REACT_PROFILER_TYPE:
      return 'Profiler';
    case REACT_STRICT_MODE_TYPE:
      return 'StrictMode';
    case REACT_SUSPENSE_TYPE:
      return 'Suspense';
  }
  if (typeof type === 'object') {
    switch (type.$$typeof) {
      case REACT_CONTEXT_TYPE:
        return 'Context.Consumer';
      case REACT_PROVIDER_TYPE:
        return 'Context.Provider';
      case REACT_FORWARD_REF_TYPE:
        return getWrappedName(type, type.render, 'ForwardRef');
      case REACT_MEMO_TYPE:
        return getComponentName(type.type);
      case REACT_LAZY_TYPE:
        {
          var thenable = type;
          var resolvedThenable = refineResolvedLazyComponent(thenable);
          if (resolvedThenable) {
            return getComponentName(resolvedThenable);
          }
        }
    }
  }
  return null;
}

var ReactDebugCurrentFrame = {};

var currentlyValidatingElement = null;

function setCurrentlyValidatingElement(element) {
  {
    currentlyValidatingElement = element;
  }
}

{
  // Stack implementation injected by the current renderer.
  ReactDebugCurrentFrame.getCurrentStack = null;

  ReactDebugCurrentFrame.getStackAddendum = function () {
    var stack = '';

    // Add an extra top frame while an element is being validated
    if (currentlyValidatingElement) {
      var name = getComponentName(currentlyValidatingElement.type);
      var owner = currentlyValidatingElement._owner;
      stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner.type));
    }

    // Delegate to the injected renderer-specific implementation
    var impl = ReactDebugCurrentFrame.getCurrentStack;
    if (impl) {
      stack += impl() || '';
    }

    return stack;
  };
}

var ReactSharedInternals = {
  ReactCurrentDispatcher: ReactCurrentDispatcher,
  ReactCurrentOwner: ReactCurrentOwner,
  // Used by renderers to avoid bundling object-assign twice in UMD bundles:
  assign: _assign
};

{
  _assign(ReactSharedInternals, {
    // These should not be included in production.
    ReactDebugCurrentFrame: ReactDebugCurrentFrame,
    // Shim for React DOM 16.0.0 which still destructured (but not used) this.
    // TODO: remove in React 17.0.
    ReactComponentTreeHook: {}
  });
}

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warning = warningWithoutStack$1;

{
  warning = function (condition, format) {
    if (condition) {
      return;
    }
    var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
    var stack = ReactDebugCurrentFrame.getStackAddendum();
    // eslint-disable-next-line react-internal/warning-and-invariant-args

    for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
      args[_key - 2] = arguments[_key];
    }

    warningWithoutStack$1.apply(undefined, [false, format + '%s'].concat(args, [stack]));
  };
}

var warning$1 = warning;

var hasOwnProperty = Object.prototype.hasOwnProperty;

var RESERVED_PROPS = {
  key: true,
  ref: true,
  __self: true,
  __source: true
};

var specialPropKeyWarningShown = void 0;
var specialPropRefWarningShown = void 0;

function hasValidRef(config) {
  {
    if (hasOwnProperty.call(config, 'ref')) {
      var getter = Object.getOwnPropertyDescriptor(config, 'ref').get;
      if (getter && getter.isReactWarning) {
        return false;
      }
    }
  }
  return config.ref !== undefined;
}

function hasValidKey(config) {
  {
    if (hasOwnProperty.call(config, 'key')) {
      var getter = Object.getOwnPropertyDescriptor(config, 'key').get;
      if (getter && getter.isReactWarning) {
        return false;
      }
    }
  }
  return config.key !== undefined;
}

function defineKeyPropWarningGetter(props, displayName) {
  var warnAboutAccessingKey = function () {
    if (!specialPropKeyWarningShown) {
      specialPropKeyWarningShown = true;
      warningWithoutStack$1(false, '%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://fb.me/react-special-props)', displayName);
    }
  };
  warnAboutAccessingKey.isReactWarning = true;
  Object.defineProperty(props, 'key', {
    get: warnAboutAccessingKey,
    configurable: true
  });
}

function defineRefPropWarningGetter(props, displayName) {
  var warnAboutAccessingRef = function () {
    if (!specialPropRefWarningShown) {
      specialPropRefWarningShown = true;
      warningWithoutStack$1(false, '%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://fb.me/react-special-props)', displayName);
    }
  };
  warnAboutAccessingRef.isReactWarning = true;
  Object.defineProperty(props, 'ref', {
    get: warnAboutAccessingRef,
    configurable: true
  });
}

/**
 * Factory method to create a new React element. This no longer adheres to
 * the class pattern, so do not use new to call it. Also, no instanceof check
 * will work. Instead test $$typeof field against Symbol.for('react.element') to check
 * if something is a React Element.
 *
 * @param {*} type
 * @param {*} key
 * @param {string|object} ref
 * @param {*} self A *temporary* helper to detect places where `this` is
 * different from the `owner` when React.createElement is called, so that we
 * can warn. We want to get rid of owner and replace string `ref`s with arrow
 * functions, and as long as `this` and owner are the same, there will be no
 * change in behavior.
 * @param {*} source An annotation object (added by a transpiler or otherwise)
 * indicating filename, line number, and/or other information.
 * @param {*} owner
 * @param {*} props
 * @internal
 */
var ReactElement = function (type, key, ref, self, source, owner, props) {
  var element = {
    // This tag allows us to uniquely identify this as a React Element
    $$typeof: REACT_ELEMENT_TYPE,

    // Built-in properties that belong on the element
    type: type,
    key: key,
    ref: ref,
    props: props,

    // Record the component responsible for creating this element.
    _owner: owner
  };

  {
    // The validation flag is currently mutative. We put it on
    // an external backing store so that we can freeze the whole object.
    // This can be replaced with a WeakMap once they are implemented in
    // commonly used development environments.
    element._store = {};

    // To make comparing ReactElements easier for testing purposes, we make
    // the validation flag non-enumerable (where possible, which should
    // include every environment we run tests in), so the test framework
    // ignores it.
    Object.defineProperty(element._store, 'validated', {
      configurable: false,
      enumerable: false,
      writable: true,
      value: false
    });
    // self and source are DEV only properties.
    Object.defineProperty(element, '_self', {
      configurable: false,
      enumerable: false,
      writable: false,
      value: self
    });
    // Two elements created in two different places should be considered
    // equal for testing purposes and therefore we hide it from enumeration.
    Object.defineProperty(element, '_source', {
      configurable: false,
      enumerable: false,
      writable: false,
      value: source
    });
    if (Object.freeze) {
      Object.freeze(element.props);
      Object.freeze(element);
    }
  }

  return element;
};

/**
 * Create and return a new ReactElement of the given type.
 * See https://reactjs.org/docs/react-api.html#createelement
 */
function createElement(type, config, children) {
  var propName = void 0;

  // Reserved names are extracted
  var props = {};

  var key = null;
  var ref = null;
  var self = null;
  var source = null;

  if (config != null) {
    if (hasValidRef(config)) {
      ref = config.ref;
    }
    if (hasValidKey(config)) {
      key = '' + config.key;
    }

    self = config.__self === undefined ? null : config.__self;
    source = config.__source === undefined ? null : config.__source;
    // Remaining properties are added to a new props object
    for (propName in config) {
      if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
        props[propName] = config[propName];
      }
    }
  }

  // Children can be more than one argument, and those are transferred onto
  // the newly allocated props object.
  var childrenLength = arguments.length - 2;
  if (childrenLength === 1) {
    props.children = children;
  } else if (childrenLength > 1) {
    var childArray = Array(childrenLength);
    for (var i = 0; i < childrenLength; i++) {
      childArray[i] = arguments[i + 2];
    }
    {
      if (Object.freeze) {
        Object.freeze(childArray);
      }
    }
    props.children = childArray;
  }

  // Resolve default props
  if (type && type.defaultProps) {
    var defaultProps = type.defaultProps;
    for (propName in defaultProps) {
      if (props[propName] === undefined) {
        props[propName] = defaultProps[propName];
      }
    }
  }
  {
    if (key || ref) {
      var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;
      if (key) {
        defineKeyPropWarningGetter(props, displayName);
      }
      if (ref) {
        defineRefPropWarningGetter(props, displayName);
      }
    }
  }
  return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);
}

/**
 * Return a function that produces ReactElements of a given type.
 * See https://reactjs.org/docs/react-api.html#createfactory
 */


function cloneAndReplaceKey(oldElement, newKey) {
  var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);

  return newElement;
}

/**
 * Clone and return a new ReactElement using element as the starting point.
 * See https://reactjs.org/docs/react-api.html#cloneelement
 */
function cloneElement(element, config, children) {
  !!(element === null || element === undefined) ? invariant(false, 'React.cloneElement(...): The argument must be a React element, but you passed %s.', element) : void 0;

  var propName = void 0;

  // Original props are copied
  var props = _assign({}, element.props);

  // Reserved names are extracted
  var key = element.key;
  var ref = element.ref;
  // Self is preserved since the owner is preserved.
  var self = element._self;
  // Source is preserved since cloneElement is unlikely to be targeted by a
  // transpiler, and the original source is probably a better indicator of the
  // true owner.
  var source = element._source;

  // Owner will be preserved, unless ref is overridden
  var owner = element._owner;

  if (config != null) {
    if (hasValidRef(config)) {
      // Silently steal the ref from the parent.
      ref = config.ref;
      owner = ReactCurrentOwner.current;
    }
    if (hasValidKey(config)) {
      key = '' + config.key;
    }

    // Remaining properties override existing props
    var defaultProps = void 0;
    if (element.type && element.type.defaultProps) {
      defaultProps = element.type.defaultProps;
    }
    for (propName in config) {
      if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
        if (config[propName] === undefined && defaultProps !== undefined) {
          // Resolve default props
          props[propName] = defaultProps[propName];
        } else {
          props[propName] = config[propName];
        }
      }
    }
  }

  // Children can be more than one argument, and those are transferred onto
  // the newly allocated props object.
  var childrenLength = arguments.length - 2;
  if (childrenLength === 1) {
    props.children = children;
  } else if (childrenLength > 1) {
    var childArray = Array(childrenLength);
    for (var i = 0; i < childrenLength; i++) {
      childArray[i] = arguments[i + 2];
    }
    props.children = childArray;
  }

  return ReactElement(element.type, key, ref, self, source, owner, props);
}

/**
 * Verifies the object is a ReactElement.
 * See https://reactjs.org/docs/react-api.html#isvalidelement
 * @param {?object} object
 * @return {boolean} True if `object` is a ReactElement.
 * @final
 */
function isValidElement(object) {
  return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
}

var SEPARATOR = '.';
var SUBSEPARATOR = ':';

/**
 * Escape and wrap key so it is safe to use as a reactid
 *
 * @param {string} key to be escaped.
 * @return {string} the escaped key.
 */
function escape(key) {
  var escapeRegex = /[=:]/g;
  var escaperLookup = {
    '=': '=0',
    ':': '=2'
  };
  var escapedString = ('' + key).replace(escapeRegex, function (match) {
    return escaperLookup[match];
  });

  return '$' + escapedString;
}

/**
 * TODO: Test that a single child and an array with one item have the same key
 * pattern.
 */

var didWarnAboutMaps = false;

var userProvidedKeyEscapeRegex = /\/+/g;
function escapeUserProvidedKey(text) {
  return ('' + text).replace(userProvidedKeyEscapeRegex, '$&/');
}

var POOL_SIZE = 10;
var traverseContextPool = [];
function getPooledTraverseContext(mapResult, keyPrefix, mapFunction, mapContext) {
  if (traverseContextPool.length) {
    var traverseContext = traverseContextPool.pop();
    traverseContext.result = mapResult;
    traverseContext.keyPrefix = keyPrefix;
    traverseContext.func = mapFunction;
    traverseContext.context = mapContext;
    traverseContext.count = 0;
    return traverseContext;
  } else {
    return {
      result: mapResult,
      keyPrefix: keyPrefix,
      func: mapFunction,
      context: mapContext,
      count: 0
    };
  }
}

function releaseTraverseContext(traverseContext) {
  traverseContext.result = null;
  traverseContext.keyPrefix = null;
  traverseContext.func = null;
  traverseContext.context = null;
  traverseContext.count = 0;
  if (traverseContextPool.length < POOL_SIZE) {
    traverseContextPool.push(traverseContext);
  }
}

/**
 * @param {?*} children Children tree container.
 * @param {!string} nameSoFar Name of the key path so far.
 * @param {!function} callback Callback to invoke with each child found.
 * @param {?*} traverseContext Used to pass information throughout the traversal
 * process.
 * @return {!number} The number of children in this subtree.
 */
function traverseAllChildrenImpl(children, nameSoFar, callback, traverseContext) {
  var type = typeof children;

  if (type === 'undefined' || type === 'boolean') {
    // All of the above are perceived as null.
    children = null;
  }

  var invokeCallback = false;

  if (children === null) {
    invokeCallback = true;
  } else {
    switch (type) {
      case 'string':
      case 'number':
        invokeCallback = true;
        break;
      case 'object':
        switch (children.$$typeof) {
          case REACT_ELEMENT_TYPE:
          case REACT_PORTAL_TYPE:
            invokeCallback = true;
        }
    }
  }

  if (invokeCallback) {
    callback(traverseContext, children,
    // If it's the only child, treat the name as if it was wrapped in an array
    // so that it's consistent if the number of children grows.
    nameSoFar === '' ? SEPARATOR + getComponentKey(children, 0) : nameSoFar);
    return 1;
  }

  var child = void 0;
  var nextName = void 0;
  var subtreeCount = 0; // Count of children found in the current subtree.
  var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR;

  if (Array.isArray(children)) {
    for (var i = 0; i < children.length; i++) {
      child = children[i];
      nextName = nextNamePrefix + getComponentKey(child, i);
      subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);
    }
  } else {
    var iteratorFn = getIteratorFn(children);
    if (typeof iteratorFn === 'function') {
      {
        // Warn about using Maps as children
        if (iteratorFn === children.entries) {
          !didWarnAboutMaps ? warning$1(false, 'Using Maps as children is unsupported and will likely yield ' + 'unexpected results. Convert it to a sequence/iterable of keyed ' + 'ReactElements instead.') : void 0;
          didWarnAboutMaps = true;
        }
      }

      var iterator = iteratorFn.call(children);
      var step = void 0;
      var ii = 0;
      while (!(step = iterator.next()).done) {
        child = step.value;
        nextName = nextNamePrefix + getComponentKey(child, ii++);
        subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);
      }
    } else if (type === 'object') {
      var addendum = '';
      {
        addendum = ' If you meant to render a collection of children, use an array ' + 'instead.' + ReactDebugCurrentFrame.getStackAddendum();
      }
      var childrenString = '' + children;
      invariant(false, 'Objects are not valid as a React child (found: %s).%s', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum);
    }
  }

  return subtreeCount;
}

/**
 * Traverses children that are typically specified as `props.children`, but
 * might also be specified through attributes:
 *
 * - `traverseAllChildren(this.props.children, ...)`
 * - `traverseAllChildren(this.props.leftPanelChildren, ...)`
 *
 * The `traverseContext` is an optional argument that is passed through the
 * entire traversal. It can be used to store accumulations or anything else that
 * the callback might find relevant.
 *
 * @param {?*} children Children tree object.
 * @param {!function} callback To invoke upon traversing each child.
 * @param {?*} traverseContext Context for traversal.
 * @return {!number} The number of children in this subtree.
 */
function traverseAllChildren(children, callback, traverseContext) {
  if (children == null) {
    return 0;
  }

  return traverseAllChildrenImpl(children, '', callback, traverseContext);
}

/**
 * Generate a key string that identifies a component within a set.
 *
 * @param {*} component A component that could contain a manual key.
 * @param {number} index Index that is used if a manual key is not provided.
 * @return {string}
 */
function getComponentKey(component, index) {
  // Do some typechecking here since we call this blindly. We want to ensure
  // that we don't block potential future ES APIs.
  if (typeof component === 'object' && component !== null && component.key != null) {
    // Explicit key
    return escape(component.key);
  }
  // Implicit key determined by the index in the set
  return index.toString(36);
}

function forEachSingleChild(bookKeeping, child, name) {
  var func = bookKeeping.func,
      context = bookKeeping.context;

  func.call(context, child, bookKeeping.count++);
}

/**
 * Iterates through children that are typically specified as `props.children`.
 *
 * See https://reactjs.org/docs/react-api.html#reactchildrenforeach
 *
 * The provided forEachFunc(child, index) will be called for each
 * leaf child.
 *
 * @param {?*} children Children tree container.
 * @param {function(*, int)} forEachFunc
 * @param {*} forEachContext Context for forEachContext.
 */
function forEachChildren(children, forEachFunc, forEachContext) {
  if (children == null) {
    return children;
  }
  var traverseContext = getPooledTraverseContext(null, null, forEachFunc, forEachContext);
  traverseAllChildren(children, forEachSingleChild, traverseContext);
  releaseTraverseContext(traverseContext);
}

function mapSingleChildIntoContext(bookKeeping, child, childKey) {
  var result = bookKeeping.result,
      keyPrefix = bookKeeping.keyPrefix,
      func = bookKeeping.func,
      context = bookKeeping.context;


  var mappedChild = func.call(context, child, bookKeeping.count++);
  if (Array.isArray(mappedChild)) {
    mapIntoWithKeyPrefixInternal(mappedChild, result, childKey, function (c) {
      return c;
    });
  } else if (mappedChild != null) {
    if (isValidElement(mappedChild)) {
      mappedChild = cloneAndReplaceKey(mappedChild,
      // Keep both the (mapped) and old keys if they differ, just as
      // traverseAllChildren used to do for objects as children
      keyPrefix + (mappedChild.key && (!child || child.key !== mappedChild.key) ? escapeUserProvidedKey(mappedChild.key) + '/' : '') + childKey);
    }
    result.push(mappedChild);
  }
}

function mapIntoWithKeyPrefixInternal(children, array, prefix, func, context) {
  var escapedPrefix = '';
  if (prefix != null) {
    escapedPrefix = escapeUserProvidedKey(prefix) + '/';
  }
  var traverseContext = getPooledTraverseContext(array, escapedPrefix, func, context);
  traverseAllChildren(children, mapSingleChildIntoContext, traverseContext);
  releaseTraverseContext(traverseContext);
}

/**
 * Maps children that are typically specified as `props.children`.
 *
 * See https://reactjs.org/docs/react-api.html#reactchildrenmap
 *
 * The provided mapFunction(child, key, index) will be called for each
 * leaf child.
 *
 * @param {?*} children Children tree container.
 * @param {function(*, int)} func The map function.
 * @param {*} context Context for mapFunction.
 * @return {object} Object containing the ordered map of results.
 */
function mapChildren(children, func, context) {
  if (children == null) {
    return children;
  }
  var result = [];
  mapIntoWithKeyPrefixInternal(children, result, null, func, context);
  return result;
}

/**
 * Count the number of children that are typically specified as
 * `props.children`.
 *
 * See https://reactjs.org/docs/react-api.html#reactchildrencount
 *
 * @param {?*} children Children tree container.
 * @return {number} The number of children.
 */
function countChildren(children) {
  return traverseAllChildren(children, function () {
    return null;
  }, null);
}

/**
 * Flatten a children object (typically specified as `props.children`) and
 * return an array with appropriately re-keyed children.
 *
 * See https://reactjs.org/docs/react-api.html#reactchildrentoarray
 */
function toArray(children) {
  var result = [];
  mapIntoWithKeyPrefixInternal(children, result, null, function (child) {
    return child;
  });
  return result;
}

/**
 * Returns the first child in a collection of children and verifies that there
 * is only one child in the collection.
 *
 * See https://reactjs.org/docs/react-api.html#reactchildrenonly
 *
 * The current implementation of this function assumes that a single child gets
 * passed without a wrapper, but the purpose of this helper function is to
 * abstract away the particular structure of children.
 *
 * @param {?object} children Child collection structure.
 * @return {ReactElement} The first and only `ReactElement` contained in the
 * structure.
 */
function onlyChild(children) {
  !isValidElement(children) ? invariant(false, 'React.Children.only expected to receive a single React element child.') : void 0;
  return children;
}

function createContext(defaultValue, calculateChangedBits) {
  if (calculateChangedBits === undefined) {
    calculateChangedBits = null;
  } else {
    {
      !(calculateChangedBits === null || typeof calculateChangedBits === 'function') ? warningWithoutStack$1(false, 'createContext: Expected the optional second argument to be a ' + 'function. Instead received: %s', calculateChangedBits) : void 0;
    }
  }

  var context = {
    $$typeof: REACT_CONTEXT_TYPE,
    _calculateChangedBits: calculateChangedBits,
    // As a workaround to support multiple concurrent renderers, we categorize
    // some renderers as primary and others as secondary. We only expect
    // there to be two concurrent renderers at most: React Native (primary) and
    // Fabric (secondary); React DOM (primary) and React ART (secondary).
    // Secondary renderers store their context values on separate fields.
    _currentValue: defaultValue,
    _currentValue2: defaultValue,
    // Used to track how many concurrent renderers this context currently
    // supports within in a single renderer. Such as parallel server rendering.
    _threadCount: 0,
    // These are circular
    Provider: null,
    Consumer: null
  };

  context.Provider = {
    $$typeof: REACT_PROVIDER_TYPE,
    _context: context
  };

  var hasWarnedAboutUsingNestedContextConsumers = false;
  var hasWarnedAboutUsingConsumerProvider = false;

  {
    // A separate object, but proxies back to the original context object for
    // backwards compatibility. It has a different $$typeof, so we can properly
    // warn for the incorrect usage of Context as a Consumer.
    var Consumer = {
      $$typeof: REACT_CONTEXT_TYPE,
      _context: context,
      _calculateChangedBits: context._calculateChangedBits
    };
    // $FlowFixMe: Flow complains about not setting a value, which is intentional here
    Object.defineProperties(Consumer, {
      Provider: {
        get: function () {
          if (!hasWarnedAboutUsingConsumerProvider) {
            hasWarnedAboutUsingConsumerProvider = true;
            warning$1(false, 'Rendering <Context.Consumer.Provider> is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Provider> instead?');
          }
          return context.Provider;
        },
        set: function (_Provider) {
          context.Provider = _Provider;
        }
      },
      _currentValue: {
        get: function () {
          return context._currentValue;
        },
        set: function (_currentValue) {
          context._currentValue = _currentValue;
        }
      },
      _currentValue2: {
        get: function () {
          return context._currentValue2;
        },
        set: function (_currentValue2) {
          context._currentValue2 = _currentValue2;
        }
      },
      _threadCount: {
        get: function () {
          return context._threadCount;
        },
        set: function (_threadCount) {
          context._threadCount = _threadCount;
        }
      },
      Consumer: {
        get: function () {
          if (!hasWarnedAboutUsingNestedContextConsumers) {
            hasWarnedAboutUsingNestedContextConsumers = true;
            warning$1(false, 'Rendering <Context.Consumer.Consumer> is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
          }
          return context.Consumer;
        }
      }
    });
    // $FlowFixMe: Flow complains about missing properties because it doesn't understand defineProperty
    context.Consumer = Consumer;
  }

  {
    context._currentRenderer = null;
    context._currentRenderer2 = null;
  }

  return context;
}

function lazy(ctor) {
  var lazyType = {
    $$typeof: REACT_LAZY_TYPE,
    _ctor: ctor,
    // React uses these fields to store the result.
    _status: -1,
    _result: null
  };

  {
    // In production, this would just set it on the object.
    var defaultProps = void 0;
    var propTypes = void 0;
    Object.defineProperties(lazyType, {
      defaultProps: {
        configurable: true,
        get: function () {
          return defaultProps;
        },
        set: function (newDefaultProps) {
          warning$1(false, 'React.lazy(...): It is not supported to assign `defaultProps` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.');
          defaultProps = newDefaultProps;
          // Match production behavior more closely:
          Object.defineProperty(lazyType, 'defaultProps', {
            enumerable: true
          });
        }
      },
      propTypes: {
        configurable: true,
        get: function () {
          return propTypes;
        },
        set: function (newPropTypes) {
          warning$1(false, 'React.lazy(...): It is not supported to assign `propTypes` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.');
          propTypes = newPropTypes;
          // Match production behavior more closely:
          Object.defineProperty(lazyType, 'propTypes', {
            enumerable: true
          });
        }
      }
    });
  }

  return lazyType;
}

function forwardRef(render) {
  {
    if (render != null && render.$$typeof === REACT_MEMO_TYPE) {
      warningWithoutStack$1(false, 'forwardRef requires a render function but received a `memo` ' + 'component. Instead of forwardRef(memo(...)), use ' + 'memo(forwardRef(...)).');
    } else if (typeof render !== 'function') {
      warningWithoutStack$1(false, 'forwardRef requires a render function but was given %s.', render === null ? 'null' : typeof render);
    } else {
      !(
      // Do not warn for 0 arguments because it could be due to usage of the 'arguments' object
      render.length === 0 || render.length === 2) ? warningWithoutStack$1(false, 'forwardRef render functions accept exactly two parameters: props and ref. %s', render.length === 1 ? 'Did you forget to use the ref parameter?' : 'Any additional parameter will be undefined.') : void 0;
    }

    if (render != null) {
      !(render.defaultProps == null && render.propTypes == null) ? warningWithoutStack$1(false, 'forwardRef render functions do not support propTypes or defaultProps. ' + 'Did you accidentally pass a React component?') : void 0;
    }
  }

  return {
    $$typeof: REACT_FORWARD_REF_TYPE,
    render: render
  };
}

function isValidElementType(type) {
  return typeof type === 'string' || typeof type === 'function' ||
  // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
  type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE);
}

function memo(type, compare) {
  {
    if (!isValidElementType(type)) {
      warningWithoutStack$1(false, 'memo: The first argument must be a component. Instead ' + 'received: %s', type === null ? 'null' : typeof type);
    }
  }
  return {
    $$typeof: REACT_MEMO_TYPE,
    type: type,
    compare: compare === undefined ? null : compare
  };
}

function resolveDispatcher() {
  var dispatcher = ReactCurrentDispatcher.current;
  !(dispatcher !== null) ? invariant(false, 'Hooks can only be called inside the body of a function component. (https://fb.me/react-invalid-hook-call)') : void 0;
  return dispatcher;
}

function useContext(Context, unstable_observedBits) {
  var dispatcher = resolveDispatcher();
  {
    !(unstable_observedBits === undefined) ? warning$1(false, 'useContext() second argument is reserved for future ' + 'use in React. Passing it is not supported. ' + 'You passed: %s.%s', unstable_observedBits, typeof unstable_observedBits === 'number' && Array.isArray(arguments[2]) ? '\n\nDid you call array.map(useContext)? ' + 'Calling Hooks inside a loop is not supported. ' + 'Learn more at https://fb.me/rules-of-hooks' : '') : void 0;

    // TODO: add a more generic warning for invalid values.
    if (Context._context !== undefined) {
      var realContext = Context._context;
      // Don't deduplicate because this legitimately causes bugs
      // and nobody should be using this in existing code.
      if (realContext.Consumer === Context) {
        warning$1(false, 'Calling useContext(Context.Consumer) is not supported, may cause bugs, and will be ' + 'removed in a future major release. Did you mean to call useContext(Context) instead?');
      } else if (realContext.Provider === Context) {
        warning$1(false, 'Calling useContext(Context.Provider) is not supported. ' + 'Did you mean to call useContext(Context) instead?');
      }
    }
  }
  return dispatcher.useContext(Context, unstable_observedBits);
}

function useState(initialState) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useState(initialState);
}

function useReducer(reducer, initialArg, init) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useReducer(reducer, initialArg, init);
}

function useRef(initialValue) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useRef(initialValue);
}

function useEffect(create, inputs) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useEffect(create, inputs);
}

function useLayoutEffect(create, inputs) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useLayoutEffect(create, inputs);
}

function useCallback(callback, inputs) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useCallback(callback, inputs);
}

function useMemo(create, inputs) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useMemo(create, inputs);
}

function useImperativeHandle(ref, create, inputs) {
  var dispatcher = resolveDispatcher();
  return dispatcher.useImperativeHandle(ref, create, inputs);
}

function useDebugValue(value, formatterFn) {
  {
    var dispatcher = resolveDispatcher();
    return dispatcher.useDebugValue(value, formatterFn);
  }
}

/**
 * ReactElementValidator provides a wrapper around a element factory
 * which validates the props passed to the element. This is intended to be
 * used only in DEV and could be replaced by a static type checker for languages
 * that support it.
 */

var propTypesMisspellWarningShown = void 0;

{
  propTypesMisspellWarningShown = false;
}

function getDeclarationErrorAddendum() {
  if (ReactCurrentOwner.current) {
    var name = getComponentName(ReactCurrentOwner.current.type);
    if (name) {
      return '\n\nCheck the render method of `' + name + '`.';
    }
  }
  return '';
}

function getSourceInfoErrorAddendum(elementProps) {
  if (elementProps !== null && elementProps !== undefined && elementProps.__source !== undefined) {
    var source = elementProps.__source;
    var fileName = source.fileName.replace(/^.*[\\\/]/, '');
    var lineNumber = source.lineNumber;
    return '\n\nCheck your code at ' + fileName + ':' + lineNumber + '.';
  }
  return '';
}

/**
 * Warn if there's no key explicitly set on dynamic arrays of children or
 * object keys are not valid. This allows us to keep track of children between
 * updates.
 */
var ownerHasKeyUseWarning = {};

function getCurrentComponentErrorInfo(parentType) {
  var info = getDeclarationErrorAddendum();

  if (!info) {
    var parentName = typeof parentType === 'string' ? parentType : parentType.displayName || parentType.name;
    if (parentName) {
      info = '\n\nCheck the top-level render call using <' + parentName + '>.';
    }
  }
  return info;
}

/**
 * Warn if the element doesn't have an explicit key assigned to it.
 * This element is in an array. The array could grow and shrink or be
 * reordered. All children that haven't already been validated are required to
 * have a "key" property assigned to it. Error statuses are cached so a warning
 * will only be shown once.
 *
 * @internal
 * @param {ReactElement} element Element that requires a key.
 * @param {*} parentType element's parent's type.
 */
function validateExplicitKey(element, parentType) {
  if (!element._store || element._store.validated || element.key != null) {
    return;
  }
  element._store.validated = true;

  var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType);
  if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
    return;
  }
  ownerHasKeyUseWarning[currentComponentErrorInfo] = true;

  // Usually the current owner is the offender, but if it accepts children as a
  // property, it may be the creator of the child that's responsible for
  // assigning it a key.
  var childOwner = '';
  if (element && element._owner && element._owner !== ReactCurrentOwner.current) {
    // Give the component that originally created this child.
    childOwner = ' It was passed a child from ' + getComponentName(element._owner.type) + '.';
  }

  setCurrentlyValidatingElement(element);
  {
    warning$1(false, 'Each child in a list should have a unique "key" prop.' + '%s%s See https://fb.me/react-warning-keys for more information.', currentComponentErrorInfo, childOwner);
  }
  setCurrentlyValidatingElement(null);
}

/**
 * Ensure that every element either is passed in a static location, in an
 * array with an explicit keys property defined, or in an object literal
 * with valid key property.
 *
 * @internal
 * @param {ReactNode} node Statically passed child of any type.
 * @param {*} parentType node's parent's type.
 */
function validateChildKeys(node, parentType) {
  if (typeof node !== 'object') {
    return;
  }
  if (Array.isArray(node)) {
    for (var i = 0; i < node.length; i++) {
      var child = node[i];
      if (isValidElement(child)) {
        validateExplicitKey(child, parentType);
      }
    }
  } else if (isValidElement(node)) {
    // This element was passed in a valid location.
    if (node._store) {
      node._store.validated = true;
    }
  } else if (node) {
    var iteratorFn = getIteratorFn(node);
    if (typeof iteratorFn === 'function') {
      // Entry iterators used to provide implicit keys,
      // but now we print a separate warning for them later.
      if (iteratorFn !== node.entries) {
        var iterator = iteratorFn.call(node);
        var step = void 0;
        while (!(step = iterator.next()).done) {
          if (isValidElement(step.value)) {
            validateExplicitKey(step.value, parentType);
          }
        }
      }
    }
  }
}

/**
 * Given an element, validate that its props follow the propTypes definition,
 * provided by the type.
 *
 * @param {ReactElement} element
 */
function validatePropTypes(element) {
  var type = element.type;
  if (type === null || type === undefined || typeof type === 'string') {
    return;
  }
  var name = getComponentName(type);
  var propTypes = void 0;
  if (typeof type === 'function') {
    propTypes = type.propTypes;
  } else if (typeof type === 'object' && (type.$$typeof === REACT_FORWARD_REF_TYPE ||
  // Note: Memo only checks outer props here.
  // Inner props are checked in the reconciler.
  type.$$typeof === REACT_MEMO_TYPE)) {
    propTypes = type.propTypes;
  } else {
    return;
  }
  if (propTypes) {
    setCurrentlyValidatingElement(element);
    checkPropTypes(propTypes, element.props, 'prop', name, ReactDebugCurrentFrame.getStackAddendum);
    setCurrentlyValidatingElement(null);
  } else if (type.PropTypes !== undefined && !propTypesMisspellWarningShown) {
    propTypesMisspellWarningShown = true;
    warningWithoutStack$1(false, 'Component %s declared `PropTypes` instead of `propTypes`. Did you misspell the property assignment?', name || 'Unknown');
  }
  if (typeof type.getDefaultProps === 'function') {
    !type.getDefaultProps.isReactClassApproved ? warningWithoutStack$1(false, 'getDefaultProps is only used on classic React.createClass ' + 'definitions. Use a static property named `defaultProps` instead.') : void 0;
  }
}

/**
 * Given a fragment, validate that it can only be provided with fragment props
 * @param {ReactElement} fragment
 */
function validateFragmentProps(fragment) {
  setCurrentlyValidatingElement(fragment);

  var keys = Object.keys(fragment.props);
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    if (key !== 'children' && key !== 'key') {
      warning$1(false, 'Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key);
      break;
    }
  }

  if (fragment.ref !== null) {
    warning$1(false, 'Invalid attribute `ref` supplied to `React.Fragment`.');
  }

  setCurrentlyValidatingElement(null);
}

function createElementWithValidation(type, props, children) {
  var validType = isValidElementType(type);

  // We warn in this case but don't throw. We expect the element creation to
  // succeed and there will likely be errors in render.
  if (!validType) {
    var info = '';
    if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
      info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports.";
    }

    var sourceInfo = getSourceInfoErrorAddendum(props);
    if (sourceInfo) {
      info += sourceInfo;
    } else {
      info += getDeclarationErrorAddendum();
    }

    var typeString = void 0;
    if (type === null) {
      typeString = 'null';
    } else if (Array.isArray(type)) {
      typeString = 'array';
    } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) {
      typeString = '<' + (getComponentName(type.type) || 'Unknown') + ' />';
      info = ' Did you accidentally export a JSX literal instead of a component?';
    } else {
      typeString = typeof type;
    }

    warning$1(false, 'React.createElement: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info);
  }

  var element = createElement.apply(this, arguments);

  // The result can be nullish if a mock or a custom function is used.
  // TODO: Drop this when these are no longer allowed as the type argument.
  if (element == null) {
    return element;
  }

  // Skip key warning if the type isn't valid since our key validation logic
  // doesn't expect a non-string/function type and can throw confusing errors.
  // We don't want exception behavior to differ between dev and prod.
  // (Rendering will throw with a helpful message and as soon as the type is
  // fixed, the key warnings will appear.)
  if (validType) {
    for (var i = 2; i < arguments.length; i++) {
      validateChildKeys(arguments[i], type);
    }
  }

  if (type === REACT_FRAGMENT_TYPE) {
    validateFragmentProps(element);
  } else {
    validatePropTypes(element);
  }

  return element;
}

function createFactoryWithValidation(type) {
  var validatedFactory = createElementWithValidation.bind(null, type);
  validatedFactory.type = type;
  // Legacy hook: remove it
  {
    Object.defineProperty(validatedFactory, 'type', {
      enumerable: false,
      get: function () {
        lowPriorityWarning$1(false, 'Factory.type is deprecated. Access the class directly ' + 'before passing it to createFactory.');
        Object.defineProperty(this, 'type', {
          value: type
        });
        return type;
      }
    });
  }

  return validatedFactory;
}

function cloneElementWithValidation(element, props, children) {
  var newElement = cloneElement.apply(this, arguments);
  for (var i = 2; i < arguments.length; i++) {
    validateChildKeys(arguments[i], newElement.type);
  }
  validatePropTypes(newElement);
  return newElement;
}

// Helps identify side effects in begin-phase lifecycle hooks and setState reducers:


// In some cases, StrictMode should also double-render lifecycles.
// This can be confusing for tests though,
// And it can be bad for performance in production.
// This feature flag can be used to control the behavior:


// To preserve the "Pause on caught exceptions" behavior of the debugger, we
// replay the begin phase of a failed component inside invokeGuardedCallback.


// Warn about deprecated, async-unsafe lifecycles; relates to RFC #6:


// Gather advanced timing metrics for Profiler subtrees.


// Trace which interactions trigger each commit.


// Only used in www builds.
 // TODO: true? Here it might just be false.

// Only used in www builds.


// Only used in www builds.


// React Fire: prevent the value and checked attributes from syncing
// with their related DOM properties


// These APIs will no longer be "unstable" in the upcoming 16.7 release,
// Control this behavior with a flag to support 16.6 minor releases in the meanwhile.
var enableStableConcurrentModeAPIs = false;

var React = {
  Children: {
    map: mapChildren,
    forEach: forEachChildren,
    count: countChildren,
    toArray: toArray,
    only: onlyChild
  },

  createRef: createRef,
  Component: Component,
  PureComponent: PureComponent,

  createContext: createContext,
  forwardRef: forwardRef,
  lazy: lazy,
  memo: memo,

  useCallback: useCallback,
  useContext: useContext,
  useEffect: useEffect,
  useImperativeHandle: useImperativeHandle,
  useDebugValue: useDebugValue,
  useLayoutEffect: useLayoutEffect,
  useMemo: useMemo,
  useReducer: useReducer,
  useRef: useRef,
  useState: useState,

  Fragment: REACT_FRAGMENT_TYPE,
  StrictMode: REACT_STRICT_MODE_TYPE,
  Suspense: REACT_SUSPENSE_TYPE,

  createElement: createElementWithValidation,
  cloneElement: cloneElementWithValidation,
  createFactory: createFactoryWithValidation,
  isValidElement: isValidElement,

  version: ReactVersion,

  unstable_ConcurrentMode: REACT_CONCURRENT_MODE_TYPE,
  unstable_Profiler: REACT_PROFILER_TYPE,

  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: ReactSharedInternals
};

// Note: some APIs are added with feature flags.
// Make sure that stable builds for open source
// don't modify the React object to avoid deopts.
// Also let's not expose their names in stable builds.

if (enableStableConcurrentModeAPIs) {
  React.ConcurrentMode = REACT_CONCURRENT_MODE_TYPE;
  React.Profiler = REACT_PROFILER_TYPE;
  React.unstable_ConcurrentMode = undefined;
  React.unstable_Profiler = undefined;
}



var React$2 = Object.freeze({
	default: React
});

var React$3 = ( React$2 && React ) || React$2;

// TODO: decide on the top-level export form.
// This is hacky but makes it work with both Rollup and Jest.
var react = React$3.default || React$3;

module.exports = react;
  })();
}


/***/ }),
/* 649 */,
/* 650 */,
/* 651 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/ru.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : russian (ru)
// author : Anatoli Papirovski : https://github.com/apapirovski

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'ru', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'тыс.',
            million: 'млн.',
            billion: 'млрд.',
            trillion: 'трлн.'
        },
        ordinal: function () {
            // not ideal, but since in Russian it can taken on
            // different forms (masculine, feminine, neuter)
            // this is all we can do
            return '.';
        },
        currency: {
            symbol: 'руб.'
        }
    });
}));


/***/ }),
/* 652 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/pl.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : polish (pl)
// author : Dominik Bulaj : https://github.com/dominikbulaj

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'pl', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'tys.',
            million: 'mln',
            billion: 'mld',
            trillion: 'bln'
        },
        ordinal: function (number) {
            return '.';
        },
        currency: {
            symbol: 'PLN'
        }
    });
}));


/***/ }),
/* 653 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/no.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : norwegian (bokmål)
// author : Ove Andersen : https://github.com/azzlack

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'no', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function (number) {
            return '.';
        },
        currency: {
            symbol: 'kr'
        }
    });
}));


/***/ }),
/* 654 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/lv.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : Latvian (lv)
// author : Lauris Bukšis-Haberkorns : https://github.com/Lafriks

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'lv', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: ' tūkst.',
            million: ' milj.',
            billion: ' mljrd.',
            trillion: ' trilj.'
        },
        ordinal: function (number) {
            return '.';
        },
        currency: {
            symbol: '€'
        }
    });
}));


/***/ }),
/* 655 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/it.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : italian Italy (it)
// author : Giacomo Trombi : http://cinquepunti.it

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'it', {
        delimiters: {
            thousands: '.',
            decimal: ','
        },
        abbreviations: {
            thousand: 'mila',
            million: 'mil',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function (number) {
            return 'º';
        },
        currency: {
            symbol: '€'
        }
    });
}));


/***/ }),
/* 656 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/hu.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : Hungarian (hu)
// author : Peter Bakondy : https://github.com/pbakondy

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'hu', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'E',  // ezer
            million: 'M',   // millió
            billion: 'Mrd', // milliárd
            trillion: 'T'   // trillió
        },
        ordinal: function (number) {
            return '.';
        },
        currency: {
            symbol: ' Ft'
        }
    });
}));


/***/ }),
/* 657 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/fr.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : french (fr)
// author : Adam Draper : https://github.com/adamwdraper

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'fr', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal : function (number) {
            return number === 1 ? 'er' : 'e';
        },
        currency: {
            symbol: '€'
        }
    });
}));


/***/ }),
/* 658 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/es.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : spanish
// author : Hernan Garcia : https://github.com/hgarcia

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'es', {
        delimiters: {
            thousands: '.',
            decimal: ','
        },
        abbreviations: {
            thousand: 'k',
            million: 'mm',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function (number) {
            var b = number % 10;
            return (b === 1 || b === 3) ? 'er' :
                (b === 2) ? 'do' :
                (b === 7 || b === 0) ? 'mo' :
		(b === 8) ? 'vo' :
		(b === 9) ? 'no' : 'to';
        },
        currency: {
            symbol: '$'
        }
    });
}));


/***/ }),
/* 659 */
/*!***********************************************!*\
  !*** ./node_modules/numeral/locales/en-gb.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : english united kingdom (uk)
// author : Dan Ristic : https://github.com/dristic

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'en-gb', {
        delimiters: {
            thousands: ',',
            decimal: '.'
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function (number) {
            var b = number % 10;
            return (~~ (number % 100 / 10) === 1) ? 'th' :
                (b === 1) ? 'st' :
                (b === 2) ? 'nd' :
                (b === 3) ? 'rd' : 'th';
        },
        currency: {
            symbol: '£'
        }
    });
}));


/***/ }),
/* 660 */
/*!***********************************************!*\
  !*** ./node_modules/numeral/locales/en-au.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : English Australia
// author : Don Vince : https://github.com/donvince/

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'en-au', {
        delimiters: {
            thousands: ',',
            decimal: '.'
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function (number) {
            var b = number % 10;
            return (~~ (number % 100 / 10) === 1) ? 'th' :
                (b === 1) ? 'st' :
                (b === 2) ? 'nd' :
                (b === 3) ? 'rd' : 'th';
        },
        currency: {
            symbol: '$'
        }
    });
}));


/***/ }),
/* 661 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/de.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : German (de) – generally useful in Germany, Austria, Luxembourg, Belgium
// author : Marco Krage : https://github.com/sinky

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'de', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function (number) {
            return '.';
        },
        currency: {
            symbol: '€'
        }
    });
}));


/***/ }),
/* 662 */
/*!***********************************************!*\
  !*** ./node_modules/numeral/locales/da-dk.js ***!
  \***********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : danish denmark (dk)
// author : Michael Storgaard : https://github.com/mstorgaard

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'da-dk', {
        delimiters: {
            thousands: '.',
            decimal: ','
        },
        abbreviations: {
            thousand: 'k',
            million: 'mio',
            billion: 'mia',
            trillion: 'b'
        },
        ordinal: function (number) {
            return '.';
        },
        currency: {
            symbol: 'DKK'
        }
    });
}));


/***/ }),
/* 663 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/cs.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : czech (cs)
// author : Anatoli Papirovski : https://github.com/apapirovski

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'cs', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'tis.',
            million: 'mil.',
            billion: 'b',
            trillion: 't'
        },
        ordinal: function () {
            return '.';
        },
        currency: {
            symbol: 'Kč'
        }
    });
}));


/***/ }),
/* 664 */
/*!********************************************!*\
  !*** ./node_modules/numeral/locales/bg.js ***!
  \********************************************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// numeral.js locale configuration
// locale : Bulgarian
// author : Don Vince : https://github.com/donvince/

(function (global, factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_ARRAY__ = [__webpack_require__(/*! ../numeral */ 81)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else {}
}(this, function (numeral) {
    numeral.register('locale', 'bg', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: { // I found these here http://www.unicode.org/cldr/charts/28/verify/numbers/bg.html
            thousand: 'хил',
            million: 'млн',
            billion: 'млрд',
            trillion: 'трлн'
        },
        ordinal: function (number) {
            // google translate suggests:
            // 1st=1-ви; 2nd=2-ри; 7th=7-ми;
            // 8th=8-ми and many others end with -ти
            // for example 3rd=3-ти
            // However since I've seen suggestions that in
            // Bulgarian the ordinal can be taken in
            // different forms (masculine, feminine, neuter)
            // I've opted to wimp out on commiting that to code
            return '';
        },
        currency: {
            symbol: 'лв'
        }
    });
}));


/***/ })
]]);
//# sourceMappingURL=vendor.bundle.js.map