webpack.production.config.js

const webpack = require('webpack');
const path = require('path');
const loaders = require('./webpack.loaders');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin');

loaders.push({
  test: /\.scss$/,
  loader: ExtractTextPlugin.extract({fallback: 'style-loader', use : 'css-loader?sourceMap&localIdentName=[local]___[hash:base64:5]!sass-loader?outputStyle=expanded'}),
  exclude: ['node_modules']
});

module.exports = {
  entry: [
    'babel-polyfill',
    './src/index.js',
  ],
  output: {
    publicPath: './',
    path: path.join(__dirname, 'public'),
    filename: '[chunkhash].js'
  },
  resolve: {
    modules: [
      path.resolve('src'),
      "node_modules"
    ],
    extensions: ['.js', '.jsx']
  },
  module: {
    loaders
  },
  plugins: [
    new CleanWebpackPlugin([
      'public/*.js',
      'public/index.html',
      'public/style.css'
    ]),
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false,
        screw_ie8: true,
        drop_console: true,
        drop_debugger: true
      }
    }),
    new webpack.optimize.OccurrenceOrderPlugin(),
    new ExtractTextPlugin({
      filename: 'style.css',
      allChunks: true
    }),
    new HtmlWebpackPlugin({
      template: './src/index.html',
      files: {
        css: ['style.css'],
        js: ['bundle.js'],
      }
    })
  ]
};