webpack.config.prod.js

let path = require('path');
let webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
  devtool: 'source-map',
  entry: [
    'babel-polyfill',
    path.resolve(__dirname, './client/src/index.js')
  ],
  output: {
    path: path.join(__dirname, 'client/dist'),
    filename: 'bundle.js',
    publicPath: '/static/'
  },
  plugins: [
    // new webpack.optimize.OccurenceOrderPlugin(),
    new ExtractTextPlugin("styles.css"),
    new webpack.DefinePlugin({
      'process.env': {
        'NODE_ENV': '\'production\'',
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compressor: {
        warnings: false
      }
    })
  ],
  node: {
    fs: 'empty'
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        include: path.join(__dirname, 'client/src'),
        loaders: ['babel-loader'],
      },
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        use: "babel-loader"
      },
      {
        test: /\.(scss|css)$/,
        loaders: ['style-loader','css-loader', 'sass-loader']
      }
    ]
  }
};