webpack.config.production.js

var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
  entry: {
    vendor: ['react', 'react-dom', 'react-router'],
    app: ['babel-polyfill', './src/index'],
  },
  output: {
    path: path.join(__dirname, 'dist'),
    publicPath: '/',
    filename: 'assets/[name].[hash].js',
    chunkFilename: 'assets/[name].[chunkhash].js',
  },
  devtool: 'cheap-module-source-map',
  module: {
    rules: [
      {
        test: /\.js$/,
        include: path.join(__dirname, 'src'),
        loader: 'babel-loader',
        query: {
          presets: [['es2015', { modules: false }], 'stage-0', 'react'],
          plugins: [
            'transform-async-to-generator',
            'transform-decorators-legacy',
          ],
        },
      },
      {
        test: /\.scss|css$/i,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            'css-loader',
            'postcss-loader',
            'resolve-url-loader',
            'sass-loader?sourceMap',
          ],
        }),
      },
      {
        test: /\.(jpe?g|png|gif|svg)$/i,
        use: [
          'file-loader?hash=sha512&digest=hex&name=[hash].[ext]',
          {
            loader: 'image-webpack-loader',
            options: {
              pngquant: {
                quality: '65-90',
                speed: 4,
              },
            },
          },
        ],
      },
      {
        test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        use: 'url-loader?limit=10000&mimetype=application/font-woff',
      },
      {
        test: /\.(ttf|eot|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        use: 'file-loader',
      },
    ],
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production'),
      },
    }),
    new webpack.NamedModulesPlugin(),
    new webpack.optimize.OccurrenceOrderPlugin(true),
    new webpack.optimize.CommonsChunkPlugin({
      name: 'vendor',
      minChunks: Infinity,
    }),
    new webpack.optimize.UglifyJsPlugin({
      minimize: true,
      compress: {
        warnings: false,
        drop_console: true,
        screw_ie8: true,
      },
      output: {
        comments: false,
      },
    }),
    new ExtractTextPlugin('assets/styles.css'),
    new HtmlWebpackPlugin({
      hash: false,
      template: './index.hbs',
    }),
  ],
};