[snek]

There is a lot of excellent information on ES4 (and other things) in Allen Wirfs-Brock's "JavaScript: The First 20 Years": https://zenodo.org/record/3707008

[treve]

Sounds interesting, but sadly a dead link =(

[fanf2]

The announcement blog post is at http://www.wirfs-brock.com/allen/posts/866 but sadly the wayback machine doesn’t have a copy of the pdf

[zwetan]

You can find a copy of the PDF here

https://discuss.as3lang.org/t/javascript-the-first-20-years/...