Downgrade to Webpack@2.3.2 for Perf Reasons

package.json

@@ -138,7 +138,7 @@
     "uuid": "2.0.1",
     "valid-url": "1.0.9",
     "walk": "2.3.4",
-    "webpack": "2.6.1",
+    "webpack": "2.3.2",
     "webpack-dev-middleware": "1.10.2",
     "webpack-hot-middleware": "2.18.0",
     "wpcom": "5.4.0",

server/bundler/webpack-plugins/NamedChunksPlugin.js

@@ -0,0 +1,27 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+class NamedChunksPlugin {
+	static defaultNameResolver( chunk ) {
+		return chunk.name || null;
+	}
+
+	constructor( nameResolver ) {
+		this.nameResolver = nameResolver || NamedChunksPlugin.defaultNameResolver;
+	}
+
+	apply( compiler ) {
+		compiler.plugin( 'compilation', compilation => {
+			compilation.plugin( 'before-chunk-ids', chunks => {
+				chunks.forEach( chunk => {
+					if ( chunk.id === null ) {
+						chunk.id = this.nameResolver( chunk );
+					}
+				} );
+			} );
+		} );
+	}
+}
+
+module.exports = NamedChunksPlugin;

server/bundler/webpack-plugins/NamedModulesPlugin.js

@@ -0,0 +1,25 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+class NamedModulesPlugin {
+	constructor( options ) {
+		this.options = options || {};
+	}
+
+	apply( compiler ) {
+		compiler.plugin( 'compilation', compilation => {
+			compilation.plugin( 'before-module-ids', modules => {
+				modules.forEach( module => {
+					if ( module.id === null && module.libIdent ) {
+						module.id = module.libIdent( {
+							context: this.options.context || compiler.options.context,
+						} );
+					}
+				} );
+			} );
+		} );
+	}
+}
+
+module.exports = NamedModulesPlugin;

webpack.config.js

@@ -14,6 +14,8 @@ const cacheIdentifier = require( './server/bundler/babel/babel-loader-cache-iden
 const ChunkFileNamePlugin = require( './server/bundler/plugin' );
 const CopyWebpackPlugin = require( 'copy-webpack-plugin' );
 const HardSourceWebpackPlugin = require( 'hard-source-webpack-plugin' );
+const NamedChunksPlugin = require( 'bundler/webpack-plugins/NamedChunksPlugin' );
+const NamedModulesPlugin = require( 'bundler/webpack-plugins/NamedModulesPlugin' );
 
 /**
  * Internal variables
@@ -93,8 +95,8 @@ const webpackConfig = {
 		} ),
 		new webpack.IgnorePlugin( /^props$/ ),
 		new CopyWebpackPlugin( [ { from: 'node_modules/flag-icon-css/flags/4x3', to: 'images/flags' } ] ),
-		new webpack.NamedModulesPlugin(),
-		new webpack.NamedChunksPlugin(),
+		new NamedModulesPlugin(),
+		new NamedChunksPlugin(),
 	],
 	externals: [ 'electron' ]
 };