webpack.config.prod.js

var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  devtool: 'source-map',
  entry: [
    './src/index'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js'
  },
  plugins: [
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compressor: {
        warnings: false
      }
    }),
    new HtmlWebpackPlugin({
      template: './src/index.template.html',
      inject: true
    })
  ],
  module: {
    loaders: [
      {
        test: /\.css$/,
        loader: "style-loader!css-loader"
      },
      {
        test: /\.png$/,
        loader: 'url-loader',
        query: { mimetype: 'image/png' }
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        include: path.join(__dirname, 'src'),
        query: {
          presets: ['es2015', 'stage-0', 'react']
        }
      }
    ]
  }
};