feat: added offline-plugin

dev/webpack/webpack.prod.js

@@ -4,6 +4,7 @@ const merge = require('webpack-merge')
 const CleanWebpackPlugin = require('clean-webpack-plugin')
 const UglifyJSPlugin = require('uglifyjs-webpack-plugin')
 const ExtractTextPlugin = require('extract-text-webpack-plugin')
+const OfflinePlugin = require('offline-plugin')
 const DuplicatePackageCheckerPlugin = require('duplicate-package-checker-webpack-plugin')
 
 const common = require('./webpack.common.js')
@@ -21,6 +22,17 @@ module.exports = merge(common, {
       'process.env.NODE_ENV': JSON.stringify('production')
     }),
     new ExtractTextPlugin('css/bundle.css'),
+    new OfflinePlugin({
+      caches: {
+        main: [
+          'js/runtime.js',
+          'js/vendor.js',
+          'js/client.js'
+        ],
+        additional: [':externals:'],
+        optional: ['*.chunk.js']
+      }
+    }),
     new DuplicatePackageCheckerPlugin()
   ]
 })