Re:ES7 brings two new features
by thethirdone on Saturday October 14, 2017 @01:27PM
(#15473172)
No. Firefox and Chrome don't have proper tail call optimizations.
up to 12% of internet users still use IE11, and even more if you count lower versions. It will take them about a decade to upgrade to a "modern browser". There are still large companies who want browser compatibility down to IE 8.
In fact, aside from Edge which lags a bit behind (and FF 52 ESR) all of them seem to have full ES2017 support already in their latest stable.