Merge branch 'feature/async_common_chunk' into develop

Author: LinusBorg

template/build/webpack.prod.conf.js

@@ -95,6 +95,16 @@ const webpackConfig = merge(baseWebpackConfig, {
       name: 'manifest',
       chunks: ['vendor']
     }),
+    // This instance extracts shared chunks from code splitted chunks and bundles them
+    // in a separate chunk, similar to the vendor chunk
+    // see: https://webpack.js.org/plugins/commons-chunk-plugin/#extra-async-commons-chunk
+    new webpack.optimize.CommonsChunkPlugin({
+      name: 'app',
+      async: 'vendor-async',
+      children: true,
+      minChunks: 3,
+    }),
+
     // copy custom static assets
     new CopyWebpackPlugin([
       {