Cache npm install, add tests

.github/workflows/main.yml

@@ -25,13 +25,16 @@ jobs:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
 
-      # - name: Cache NPM dependencies
-      #   uses: actions/cache@v1
-      #   with:
-      #     path: ~/.npm
-      #     key: ${{ runner.OS }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
-      #     restore-keys: |
-      #       ${{ runner.OS }}-npm-cache-
+      - name: Cache NPM dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.npm
+          key: ${{ runner.OS }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.OS }}-npm-cache-
+
+      - name: Test
+        run: npm run test
 
       - name: Install NPM dependencies
         run: npm ci

package.json

@@ -103,10 +103,10 @@
     "uglifyjs-webpack-plugin": "^1.3.0",
     "url-loader": "^1.0.1",
     "watchpack": "^1.6.0",
-    "webpack": "^4.12.0",
-    "webpack-cli": "^3.0.4",
-    "webpack-dev-middleware": "^3.1.3",
-    "webpack-dev-server": "^3.2.1",
+    "webpack": "^4.46.0",
+    "webpack-cli": "^3.3.12",
+    "webpack-dev-middleware": "^3.7.3",
+    "webpack-dev-server": "^3.11.2",
     "worker-loader": "^2.0.0"
   },
   "engines": {