[refactor] Converted TextFile to TypeScript

src/NetscriptFunctions.js

@@ -36,7 +36,7 @@ import {StockMarket, StockSymbols, SymbolToStockMap, initStockSymbols,
         Stock, shortStock, sellShort, OrderTypes,
         PositionTypes, placeOrder, cancelOrder}     from "./StockMarket.js";
 import {post}                                       from "./Terminal.js";
-import {TextFile, getTextFile, createTextFile}      from "./TextFile.js";
+import {TextFile, getTextFile, createTextFile}      from "./TextFile";
 
 import {WorkerScript, workerScripts,
         killWorkerScript, NetscriptPorts}           from "./NetscriptWorker.js";

src/Script.js

@@ -29,7 +29,7 @@ import {Player}                                 from "./Player.js";
 import {AllServers, processSingleServerGrowth}  from "./Server.js";
 import {Settings}                               from "./Settings.js";
 import {post, Terminal}                         from "./Terminal.js";
-import {TextFile}                               from "./TextFile.js";
+import {TextFile}                               from "./TextFile";
 
 import {parse, Node}                            from "../utils/acorn.js";
 import {dialogBoxCreate}                        from "../utils/DialogBox.js";

src/Terminal.js

@@ -29,8 +29,7 @@ import {AllServers, GetServerByHostname,
 import {Settings}                           from "./Settings.js";
 import {SpecialServerIps,
         SpecialServerNames}                 from "./SpecialServerIps.js";
-import {TextFile, getTextFile,
+import {TextFile, getTextFile}              from "./TextFile";
-        createTextFile}                     from "./TextFile.js";
 
 import {containsAllStrings, longestCommonStart,
         formatNumber, isString}             from "../utils/StringHelperFunctions.js";

src/TextFile.js

@@ -1,90 +0,0 @@
-import {Server}                             from "./Server.js";
-import {dialogBoxCreate}                    from "../utils/DialogBox.js";
-import {Reviver, Generic_toJSON,
-        Generic_fromJSON}                   from "../utils/JSONReviver.js";
-
-function TextFile(fn="", txt="") {
-    this.fn = fn.endsWith(".txt") ? fn : fn + ".txt";
-    this.fn = this.fn.replace(/\s+/g, '');
-    this.text = String(txt);
-}
-
-TextFile.prototype.append = function(txt) {
-    this.text += String(txt);
-}
-
-TextFile.prototype.write = function(txt) {
-    this.text = String(txt);
-}
-
-TextFile.prototype.read = function() {
-    return this.txt;
-}
-
-TextFile.prototype.show = function() {
-    dialogBoxCreate(this.fn + "<br><br>" + this.text, true);
-}
-
-TextFile.prototype.download = function() {
-    var filename = this.fn;
-    var file = new Blob([this.text], {type: 'text/plain'});
-    if (window.navigator.msSaveOrOpenBlob) {// IE10+
-        window.navigator.msSaveOrOpenBlob(file, filename);
-    } else { // Others
-        var a = document.createElement("a"),
-                url = URL.createObjectURL(file);
-        a.href = url;
-        a.download = this.fn;
-        document.body.appendChild(a);
-        a.click();
-        setTimeout(function() {
-            document.body.removeChild(a);
-            window.URL.revokeObjectURL(url);
-        }, 0);
-    }
-}
-
-TextFile.prototype.toJSON = function() {
-	return Generic_toJSON("TextFile", this);
-}
-
-TextFile.fromJSON = function(value) {
-	return Generic_fromJSON(TextFile, value.data);
-}
-
-Reviver.constructors.TextFile = TextFile;
-
-function getTextFile(fn, server) {
-    if (!fn.endsWith(".txt")) {fn += ".txt";}
-    for (var i = 0; i < server.textFiles.length; ++i) {
-        if (server.textFiles[i].fn === fn) {
-            return server.textFiles[i];
-        }
-    }
-    return null;
-}
-
-//Returns the TextFile object that was just created
-function createTextFile(fn, txt, server) {
-    if (getTextFile(fn, server) !== null) {
-        console.log("ERROR: createTextFile failed because the specified " +
-                    "server already has a text file with the same fn");
-        return;
-    }
-    var file = new TextFile(fn, txt);
-    server.textFiles.push(file);
-    return file;
-}
-
-function deleteTextFile(fn, server) {
-    if (!fn.endsWith(".txt")) {fn += ".txt";}
-    for (var i = 0; i < server.textFiles.length; ++i) {
-        if (server.textFiles[i].fn === fn) {
-            server.textFiles.splice(i, 1);
-            return true;
-        }
-    }
-    return false;
-}
-
-export {TextFile, getTextFile, createTextFile};

src/TextFile.ts

@@ -0,0 +1,103 @@
+import {dialogBoxCreate} from "../utils/DialogBox";
+import {Reviver, Generic_toJSON, Generic_fromJSON} from "../utils/JSONReviver";
+
+export class TextFile {
+    fn: string;
+    text: string;
+
+    constructor(fn = "", txt = "") {
+        this.fn = (fn.endsWith(".txt") ? fn : `${fn}.txt`).replace(/\s+/g, '');
+        this.text = txt;
+    }
+
+    append(txt: string) {
+        this.text += txt;
+    }
+
+    write(txt: string) {
+        this.text = txt;
+    }
+
+    read() {
+        return this.text;
+    }
+
+    show() {
+        dialogBoxCreate(`${this.fn}<br /><br />${this.text}`, true);
+    }
+
+    download() {
+        const filename = this.fn;
+        const file = new Blob([ this.text ], { type: 'text/plain' });
+        if (window.navigator.msSaveOrOpenBlob) {
+            // IE10+
+            window.navigator.msSaveOrOpenBlob(file, filename);
+        } else {
+            // Others
+            const a = document.createElement("a");
+            const url = URL.createObjectURL(file);
+            a.href = url;
+            a.download = this.fn;
+            document.body.appendChild(a);
+            a.click();
+            setTimeout(() => {
+                document.body.removeChild(a);
+                window.URL.revokeObjectURL(url);
+            }, 0);
+        }
+    }
+
+    toJSON() {
+        return Generic_toJSON("TextFile", this);
+    }
+
+    static fromJSON(value: any) {
+        return Generic_fromJSON(TextFile, value.data);
+    }
+}
+
+Reviver.constructors.TextFile = TextFile;
+
+export function getTextFile(fn: string, server: any): string | null {
+    if (!fn.endsWith(".txt")) {
+        fn += ".txt";
+    }
+
+    for (let i = 0; i < server.textFiles.length; i++) {
+        if (server.textFiles[i].fn === fn) {
+            return server.textFiles[i];
+        }
+    }
+
+    return null;
+}
+
+/**
+ * Creates a TextFile on the target server.
+ * @param {string} fn The file name to create.
+ * @param {string} txt The contents of the file.
+ * @param {*} server The server that the file should be created on.
+ * @returns {TextFile} The instance of the file.
+ */
+export function createTextFile(fn: string, txt: string, server: any): TextFile {
+    if (getTextFile(fn, server) !== null) {
+        console.error(`A file named "${fn}" already exists on server ${server.hostname}.`);
+        return;
+    }
+    const file = new TextFile(fn, txt);
+    server.textFiles.push(file);
+    return file;
+}
+
+function deleteTextFile(fn, server) {
+    if (!fn.endsWith(".txt")) {
+        fn += ".txt";
+    }
+    for (var i = 0; i < server.textFiles.length; ++i) {
+        if (server.textFiles[i].fn === fn) {
+            server.textFiles.splice(i, 1);
+            return true;
+        }
+    }
+    return false;
+}

tsconfig.json

@@ -1,7 +1,7 @@
 {
     "compilerOptions": {
         "module": "commonjs",
-        "target": "es5",
+        "target": "es6",
         "sourceMap": true
     },
     "exclude": [