Sample webpack config for prod

webpack.config.prod.js

const path = require('path');
const webpack = require('webpack');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const settings = require('./settings');

module.exports = {
  entry: [
    './src/client/index'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js',
    publicPath: '/static/'
  },
  plugins: [
    new BundleAnalyzerPlugin({
        reportFilename: 'report.html',
        analyzerMode: 'static'
    }),

    new webpack.LoaderOptionsPlugin({
      minimize: true,
      debug: false
    }),

    new webpack.optimize.AggressiveMergingPlugin(),

    new UglifyJSPlugin({
      uglifyOptions: {
        compress: {
          warnings: true
        },
        output: {
          comments: false,
          beautify: true
        }
      },
      sourceMap: false
    }),

    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production'),
      'process.env.BUILD_ENV': JSON.stringify(process.env.BUILD_ENV),
      '__API_HOST__': JSON.stringify(settings.api.host),
      '__HUB_HOST__': JSON.stringify(settings.hub.host)
    })
  ],
  module: {
    rules: [
      {
        test: /\.js?/,
        include: [
          path.join(__dirname, '../../client'),
          path.join(__dirname, 'config')
        ],
        exclude: [
          /node_modules/, /styles/
        ],
        use: [
          {
            loader: 'babel-loader'
          }
        ]
      },
      {
        test: /\.(jpe?g|png|gif|svg|mov)$/i,
        loader: 'file-loader?name=[name].[ext]'
      },
      {
        test: /\.(scss|css)$/,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader'
        ]
      }
    ]
  }
};