webpack.prod.config.js

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

const config = {
  entry: {
    bundle: [
      './src/clientRender.js'
    ],
    'vendor/js': [
      'react',
      'react-dom',
      'redux',
      'react-redux'
    ]
  },
  output: {
    path: resolve(__dirname, 'public/static'),
    filename: '[name].js',
    publicPath: '/static/'
  },
  module: {
    rules: [
      {
        test: /\.js[x]?$/,
        enforce: 'pre',
        use: [{
          loader: 'eslint-loader', 
          options: { fix: true }
        }],
        exclude: '/node_modules/'
      },
      {
        test: /\.js$/,
        use: [
          'babel-loader'
        ],
        exclude: '/node_modules/'
      },
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          use: [
            {
              loader: 'css-loader',
              options: {
                modules: true,
                importLoaders: 1,
                localIdentName: '[name]_[local]___[hash:base64:5]'
              }
            },
            {
              loader: 'postcss-loader'
            }
          ]
        })
      }
    ]
  },
  plugins: [
    new webpack.optimize.CommonsChunkPlugin({
      name: 'vendor',
      minChunks: function (module) {
         // this assumes your vendor imports exist in the node_modules directory
         return module.context && module.context.indexOf('node_modules') !== -1
      }
    }),
    new ExtractTextPlugin({
      filename: '[name].css',
      disable: false,
      allChunks: true
    })
  ]
}

module.exports = config