docs(aio): update migrated content from anguar.io

aio/content/examples/webpack/config/webpack.prod.js

@@ -0,0 +1,41 @@
+// #docregion
+var webpack = require('webpack');
+var webpackMerge = require('webpack-merge');
+var ExtractTextPlugin = require('extract-text-webpack-plugin');
+var commonConfig = require('./webpack.common.js');
+var helpers = require('./helpers');
+
+const ENV = process.env.NODE_ENV = process.env.ENV = 'production';
+
+module.exports = webpackMerge(commonConfig, {
+  devtool: 'source-map',
+
+  output: {
+    path: helpers.root('dist'),
+    publicPath: '/',
+    filename: '[name].[hash].js',
+    chunkFilename: '[id].[hash].chunk.js'
+  },
+
+  plugins: [
+    new webpack.NoEmitOnErrorsPlugin(),
+    new webpack.optimize.UglifyJsPlugin({ // https://github.com/angular/angular/issues/10618
+      mangle: {
+        keep_fnames: true
+      }
+    }),
+    new ExtractTextPlugin('[name].[hash].css'),
+    new webpack.DefinePlugin({
+      'process.env': {
+        'ENV': JSON.stringify(ENV)
+      }
+    }),
+    new webpack.LoaderOptionsPlugin({
+      htmlLoader: {
+        minimize: false // workaround for ng2
+      }
+    })
+  ]
+});
+
+// #enddocregion