はてなブックマーク - Editorial: Remove 'designed to be subclassable' by ptomato · Pull Request #2360 · tc39/ecma262
https://b.hatena.ne.jp/entry/s/github.com/tc39/ecma262/pull/2360
efcl
https://b.hatena.ne.jp/efcl/20210901#bookmark-4707725611057264962
"is designed to be subclassable"の記述がややこしいので仕様から消えた2021-09-01T11:01:21ZECMAScriptspecissue