webpack.dll.prd.js

const webpack = require('webpack');
const Merge = require('webpack-merge');
const CommonConfig = require('./webpack.dll.common.js');

module.exports = function (env) {
  return Merge(CommonConfig, {
    plugins: [
      new webpack.LoaderOptionsPlugin({
        minimize: true,
        debug: false
      }),
      new webpack.DefinePlugin({
        'process.env': {
          'NODE_ENV': JSON.stringify('production')
        }
      }),
      new webpack.optimize.UglifyJsPlugin({
        sourceMap: true,
        warnings: false,
        beautify: false,
        mangle: {
          screw_ie8: true,
          keep_fnames: true
        },
        compress: {
          screw_ie8: true
        },
        comments: false
      })
    ]
  })
}