webpack.config.prod.js

import webpack from 'webpack';
import path from 'path';
import ExtractTextPlugin from 'extract-text-webpack-plugin';

process.env.NODE_ENV = process.env.NODE_ENV || 'development';

const GLOBALS = {
  'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
};
module.exports = {
  devtool: 'source-map',
  entry: './client/src/index.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/',
    filename: 'bundle.js'
  },
  module: {
    loaders: [
      {
        test: /\.(js|jsx)$/,
        loader: 'babel-loader',
        exclude: /node_modules\//,
        query: {
          presets: ['react', 'es2015'],
          plugins: [
            'react-html-attrs',
            'transform-decorators-legacy',
            'transform-class-properties'],
        }
      },
      {
        test: /\.css$/,
        loader: ExtractTextPlugin.extract('css?sourceMap')
      },
      {
        test: /\.(ttf|otf|eot|svg|woff(2)?)(\?[a-z0-9]+)?$/,
        loader: 'file-loader?name=/fonts/[name].[ext]'
      },
      {
        test: /\.scss$/,
        loader: 'style-loader!css-loader!sass-loader'
      }
    ]
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  plugins: [
    new webpack.optimize.OccurrenceOrderPlugin(),
    new webpack.DefinePlugin(GLOBALS),
    new ExtractTextPlugin('./client/css/style.css'),
    new webpack.optimize.UglifyJsPlugin()
  ],
};