message: up uglify-js
diff: @@ -109,13 +109,12 @@ const config = (env = 'dev') => {
  ifProd(
  new UglifyJsPlugin({
  sourceMap: true,
  - compress: {
  - screw_ie8: true,
  - warnings: false,
  - },
  + uglifyOptions: {
  + compress: true,
  output: {
  comments: false
  - },
  + }
  + }
  })
  ),
  