Webpack with scope hoisting

webpack.config.js

 ];
 
 if (minimize) {
-    // While webpack will automatically insert UglifyJsPlugin when minimize is
-    // true, the defaults of UglifyJsPlugin in webpack 1 and webpack 2 are
-    // different. Explicitly state what we want even if we want defaults in
-    // order to prepare for webpack 2.
+    plugins.push(new webpack.optimize.ModuleConcatenationPlugin());
     plugins.push(new webpack.optimize.UglifyJsPlugin({
         compress: {
-            // It is nice to see warnings from UglifyJsPlugin that something is
-            // unused and, consequently, is removed. The default is false in
-            // webpack 2.
             warnings: true
         },
         extractComments: true,
-
-        // Use the source map to map error message locations to modules. The
-        // default is false in webpack 2.
         sourceMap: true
     }));
 }