update webpack config

package.json

@@ -72,6 +72,7 @@
     "style-loader": "^0.20.2",
     "to-camel-case": "^1.0.0",
     "to-title-case": "^1.0.0",
+    "uglifyjs-webpack-plugin": "^1.1.8",
     "webpack": "^3.11.0",
     "webpack-dev-server": "^2.11.1",
     "yaml-js": "^0.2.0"

support/webpack/config.js

@@ -4,6 +4,7 @@ const HtmlWebpackPlugin = require('html-webpack-plugin')
 const HtmlWebpackTemplate = require('html-webpack-template')
 const ExtractTextPlugin = require('extract-text-webpack-plugin')
 const CopyWebpackPlugin = require('copy-webpack-plugin')
+const UglifyJSPlugin = require('uglifyjs-webpack-plugin')
 
 const NamedModulesPlugin = webpack.NamedModulesPlugin
 const HotModuleReplacementPlugin = webpack.HotModuleReplacementPlugin
@@ -62,6 +63,7 @@ const config = {
       ],
     }),
     IS_PROD && new CopyWebpackPlugin(['examples/CNAME']),
+    IS_PROD && new UglifyJSPlugin({ sourceMap: true }),
     IS_DEV && new NamedModulesPlugin(),
     IS_DEV && new HotModuleReplacementPlugin(),
   ].filter(Boolean),

yarn.lock

@@ -1687,12 +1687,6 @@ clean-css@4.1.x:
   dependencies:
     source-map "0.5.x"
 
-clean-webpack-plugin@^0.1.18:
-  version "0.1.18"
-  resolved "https://registry.yarnpkg.com/clean-webpack-plugin/-/clean-webpack-plugin-0.1.18.tgz#2e2173897c76646031bff047c14b9c22c80d8c4a"
-  dependencies:
-    rimraf "^2.6.1"
-
 cli-cursor@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"