Initial commit

webpack/v4/webpack.prod.config.js

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+// NOTE: this configuration file MUST NOT be loaded with `-p` or `--optimize-minimize` option.
+// This option includes an implicit call to UglifyJsPlugin and LoaderOptionsPlugin. Instead,
+// an explicit call is made in this file to these plugins with customized options that enables
+// more control of the output bundle in order to fix unexpected behavior in old browsers.
+const webpack = require('webpack');
+const merge = require('webpack-merge');
+const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
+const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
+const baseConfig = require('./webpack.base.config.js');
+
+module.exports = merge(baseConfig, {
+  mode: 'production',
+  plugins: [
+    new webpack.DefinePlugin({
+      __IN_DEV__: JSON.stringify(false),
+      __ENV__: JSON.stringify('prod')
+    })
+  ],
+  optimization: {
+    minimizer: [
+      new UglifyJsPlugin({
+        cache: false,
+        parallel: true,
+        sourceMap: true,
+        uglifyOptions: {
+          keep_fnames: true,
+          output: {
+            ascii_only: true,
+            beautify: false
+          }
+        }
+      }),
+      new OptimizeCSSAssetsPlugin({
+        cssProcessorOptions: {
+          zindex: false,
+          reduceIdents: false,
+          autoprefixer: {
+            remove: false,
+            add: true,
+            browsers: ['> 1%']
+          }
+        }
+      })
+    ]
+  }
+});