Re:Ask HN: If you targetting ES6 by default, how did you rat...
by hzoo on Thursday December 22, 2016 @11:49PM
(#13242915)
https://github.com/babel/babel-preset-env/ should help with this to remove the polyfills that are already supported, and with some future work to remove polyfills are unused.
https://www.youtube.com/watch?v=L3JJ8qSIg2k