webpack.config.prod.js

var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ManifestPlugin = require('webpack-manifest-plugin');
module.exports = {
  entry: __dirname + "/src/index.js",
  output: {
    path: __dirname + "/build",
    filename: "bundle.js",
    publicPath: "./",
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015', 'react'],
          plugins: ['react-hot-loader/babel', 'transform-class-properties']
        }
      },
      {
        test: /\.css$/,
        use: [
          { loader: "style-loader" },
          { loader: "css-loader" }
        ]
      },
      {
        exclude: [/\.html$/, /\.(js|jsx)$/, /\.css$/, /\.json$/],
        loader: 'file-loader',
        options: {
          name: 'static/media/[name].[ext]'
        }
      }
    ]
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production')
      }
    }),
    new HtmlWebpackPlugin({
      inject: true,
      template: __dirname + "/public/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.optimize.UglifyJsPlugin({
      compress: {
        warnings: false,
        reduce_vars: false
      },
      output: {
        comments: false
      },
      sourceMap: true
    }),
    new ManifestPlugin({
      filename: "asset-manifest.json",
    }),
  ],
}