gistfile1.txt

const config = {
  entry: [
    'es5-shim/es5-shim',
    'es5-shim/es5-sham',
    'babel-polyfill',
    './app/bundles/SAW/startup/registration',
  ],

  output: {
    filename: 'webpack-bundle.js',
    path: pathLib.resolve(__dirname, '../app/assets/webpack'),
  },

  resolve: {
    extensions: ['.js', '.jsx'],
    alias: {
      Reducers: path.resolve(__dirname, 'app/bundles/SAW/reducers')
    }
  },
  plugins: [
    new webpack.EnvironmentPlugin({ NODE_ENV: 'development' }),
  ],
  module: {
    rules: [
      {
        test: require.resolve('react'),
        use: {
          loader: 'imports-loader',
          options: {
            shim: 'es5-shim/es5-shim',
            sham: 'es5-shim/es5-sham',
          }
        },
      },
      {
        test: /\.jsx?$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
    ],
  },
};