Add `WeakSet.prototype.{addAll, deleteAll}` for symmetry with `Set` - Githubissues

tc39 / proposal-collection-methods

https://tc39.github.io/proposal-collection-methods/

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Add `WeakSet.prototype.{addAll, deleteAll}` for symmetry with `Set` #15

Closed zloirock closed 6 years ago

zloirock commented 6 years ago

Fixes #8.

Ginden commented 6 years ago

Merged!