webpack.prod.config.js

const webpack = require('webpack')
const { resolve } = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin')

const VENDOR_LIBS = [
  'react',
  'react-dom',
  'styled-components',
  'react-redux',
  'redux',
  'axios',
  'react-skycons',
  'reselect'
]

module.exports = {
  entry: {
    bundle: ['babel-polyfill', './src/index.js'],
    vendor: VENDOR_LIBS
  },

  output: {
    path: resolve(__dirname, 'dist'),
    filename: '[name].[chunkhash].js',
    chunkFilename: '[id].[chunkhash].js',
    publicPath: '/'
  },

  devtool: 'source-map',

  module: {
    rules: [
      {
        test: /\.jsx?$/,
        use: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              options: {
                importLoaders: 1,
                import: false
              }
            },
            'postcss-loader'
          ]
        })
      }
    ]
  },

  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production')
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      comments: false
    }),
    new webpack.optimize.CommonsChunkPlugin({
      names: ['vendor', 'manifest']
    }),
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new ExtractTextPlugin({
      filename: 'styles.[chunkhash:6].css',
      allChunks: true
    })
  ]
}