webpack.config.js

var webpack = require('webpack');

var plugins = [
  new webpack.optimize.OccurenceOrderPlugin(),
  new webpack.DefinePlugin({
    'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
  })
];

if (process.env.NODE_ENV === 'production') {
  plugins.push(
    new webpack.optimize.UglifyJsPlugin({
      compressor: {
        screw_ie8: true,
        warnings: false
      }
    })
  );
}

module.exports = {
  externals: [
    { 'react': {
        root: 'React',
        commonjs2: 'react',
        commonjs: 'react',
        amd: 'react'
      }
    },
    { 'react-dom': {
        root: 'ReactDOM',
        commonjs2: 'react-dom',
        commonjs: 'react-dom',
        amd: 'react-dom'
      }
    },
  ],
  module: {
    loaders: [{
      test: /\.jsx?$/,
      loaders: ['babel-loader'],
      exclude: /node_modules/
    }]
  },
  output: {
    library: 'ReactBEMGrid',
    libraryTarget: 'umd'
  },
  plugins: plugins,
  resolve: {
    extensions: ['', '.js', '.jsx', '.json']
  }
};