add optimize-css-assets-webpack-plugin

Author: saracope

config/webpack/webpack.shared.js

@@ -5,6 +5,7 @@ const CopyWebpackPlugin = require('copy-webpack-plugin')
 const DefinePlugin = require('webpack/lib/DefinePlugin')
 const EnvironmentPlugin = require('webpack/lib/EnvironmentPlugin')
 const HtmlWebpackPlugin = require('html-webpack-plugin')
+const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin')
 const sass = require('sass')
 const autoprefixer = require('autoprefixer')
 const mqpacker = require('css-mqpacker')
@@ -248,6 +249,13 @@ module.exports = {
         removeScriptTypeAttributes: true
       }
     }),
+    new OptimizeCSSAssetsPlugin({
+      assetNameRegExp: /\.optimize\.css$/g,
+      cssProcessorPluginOptions: {
+        preset: ['default', { discardComments: { removeAll: true } }]
+      },
+      canPrint: true
+    }),
     new AppManifestWebpackPlugin({
       emitStats: true,
       logo: './assets/img/favicon.png',