问Webpack生产方式

EN

var path = require('path');
var webpack = require('webpack');

module.exports = {
  devtool: 'cheap-module-eval-source-map',
  entry: [
    'webpack-hot-middleware/client',
    './src/index'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: `[name].bundle.js`,
    chunkFilename: `[name].bundle.js`
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
         new webpack.optimize.ModuleConcatenationPlugin(),
    new webpack.DefinePlugin({
        'process.env': {
                'NODE_ENV': JSON.stringify('production')


        }
            }),  
            new webpack.optimize.CommonsChunkPlugin({
   ....      }
      })
      ]...

  "webpack": "^3.10.0",
    "webpack-bundle-analyzer": "^2.11.1",
    "webpack-dev-middleware": "^1.12.0",
    "webpack-hot-middleware": "^2.22.1"