message: tweak webpack config
diff: @@ -106,6 +106,7 @@ module.exports = opts => ({
  }),
  new webpack.optimize.AggressiveMergingPlugin()
  ] : [
  + new webpack.NamedModulesPlugin(),
  new webpack.NoEmitOnErrorsPlugin(),
  new webpack.HotModuleReplacementPlugin()
  ]),
  