webpack.config.prod.js

var webpack = require('webpack');

module.exports = {
  devtool: 'cheap-module-source-map',
  entry: "./web/index.js",
  output: {
    filename: "./public/dist/bundle.js"
  },
  module: {
    loaders: [
      {
        test: /\.jsx*$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        query: {
          presets: ['react', 'es2015']
        }
      }
    ]
  },
  resolve: {
    extensions: ['', '.js', '.jsx', '.es6']
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        'NODE_ENV': JSON.stringify('production')
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      compressor: {
        warnings: false
      }
    })
  ]
};