webpack.config.js

/* eslint-disable */
var webpack = require('webpack');
var path = require('path');
var nodeExternals = require('webpack-node-externals');
var optimize = webpack.optimize;

var webpackConfig = module.exports = {
  entry: ['babel-polyfill', './index.js'],
  output: {
    path: './build',
    filename: 'index.js'
  },
  target: 'node', // in order to ignore built-in modules like path, fs, etc.
  externals: [nodeExternals()], // in order to ignore all modules in node_modules folder
  devtool: 'cheap-module-source-map',
  resolve: {
    extensions: ['', '.js', '.jsx', '.json']
  },
  plugins: [
    new optimize.OccurenceOrderPlugin(),
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production')
      }
    })
  ],
  module: {
    loaders: [
      {
        test: /\.(js|jsx)$/,
        loader: 'babel',
        exclude: /node_modules/,
        query: {
          cacheDirectory: true,
          presets: ['react', 'es2015', 'stage-0'],
          plugins: [
            'transform-decorators-legacy',
            'transform-react-constant-elements',
            'transform-react-inline-elements'
          ]
        }
      }
    ]
  }
};