create-react-app/webpack.config.prod.js

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

var path = require('path');
var autoprefixer = require('autoprefixer');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');

var isInNodeModules = 'node_modules' ===
  path.basename(path.resolve(path.join(__dirname, '..')));
var relative = isInNodeModules ? '../..' : '.';

module.exports = {
  devtool: 'source-map',
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, relative, 'build'),
    filename: '[name].[hash].js',
    // TODO: this wouldn't work for e.g. GH Pages.
    // Good news: we can infer it from package.json :-)
    publicPath: '/'
  },
  module: {
    preLoaders: [
      {
        test: /\.js$/,
        loader: 'eslint',
        include: path.resolve(__dirname, relative, 'src')
      }
    ],
    loaders: [
      {
        test: /\.js$/,
        include: path.resolve(__dirname, relative, 'src'),
        loader: 'babel',
        query: {
          presets: ['es2015', 'es2016', 'react'],
          plugins: [
            'transform-object-rest-spread',
            'transform-react-constant-elements'
          ]
        }
      },
      {
        test: /\.css$/,
        include: path.resolve(__dirname, relative, 'src'),
        loader: 'style!css!postcss'
      },
      {
        test: /\.json$/,
        loader: 'json'
      },
      {
        test: /\.(jpg|png|gif|eot|svg|ttf|woff|woff2)$/,
        loader: 'file',
      },
      {
        test: /\.(mp4|webm)$/,
        loader: 'url?limit=10000'
      }
    ]
  },
  eslint: {
    configFile: path.join(__dirname, '.eslintrc')
  },
  postcss: function() {
    return [autoprefixer];
  },
  plugins: [
    new HtmlWebpackPlugin({
      inject: true,
      template: path.resolve(__dirname, relative, 'index.html'),
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeRedundantAttributes: true,
        useShortDoctype: true,
        removeEmptyAttributes: true,
        removeStyleLinkTypeAttributes: true,
        keepClosingSlash: true,
        minifyJS: true,
        minifyCSS: true,
        minifyURLs: true
      }
    }),
    new webpack.DefinePlugin({ 'process.env.NODE_ENV': '"production"' }),
    new webpack.optimize.OccurrenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compressor: {
        screw_ie8: true,
        warnings: false
      },
      mangle: {
        screw_ie8: true
      },
      output: {
        comments: false,
        screw_ie8: true
      }
    })
  ]
};