webpack.config.production.js

const path = require('path')

const webpack = require('webpack')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const CompressionPlugin = require('compression-webpack-plugin')
const ManifestPlugin = require('webpack-manifest-plugin')

const vendorManifest = require('./dist/vendor-manifest.json') // eslint-disable-line import/no-unresolved
const resolve = require('./webpack/_resolve.js')

module.exports = {
  devtool: 'source-map',
  entry: { production: './src/index' },
  output: {
    path: path.join(__dirname, 'dist'),
    filename: '[name].[chunkhash].js',
    publicPath: '/static/',
  },
  plugins: [
    new webpack.optimize.ModuleConcatenationPlugin(),
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production'),
      },
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compress: {
        screw_ie8: true,
        warnings: false,
      },
    }),
    new ExtractTextPlugin('[name].[chunkhash].css'),
    new webpack.DllReferencePlugin({
      manifest: vendorManifest,
    }),
    new CompressionPlugin({
      test: /\.(js|css)$/,
      threshold: 10240,
    }),
    new ManifestPlugin({
      fileName: 'production.stats.json',
    }),
  ],
  resolve,
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        include: /node_modules/,
        loader: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              options: {
                modules: false,
                minimize: true,
              },
            },
          ],
        }),
      },
      {
        test: /\.css$/,
        exclude: /node_modules/,
        loader: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              options: {
                modules: true,
                minimize: true,
                importLoaders: 2,
                localIdentName: '[name]__[local]___[hash:base64:5]',
              },
            },
            {
              loader: 'postcss-loader',
            },
          ],
        }),
      },
    ],
  },
}