1966745 - Ship Symbols as WeakMap keys

Status: RESOLVED FIXED

(Core :: JavaScript Engine, task, P3)

Description

[Dan Minor [:dminor]]

We've had an implementation for Symbols as WeakMap keys for a while, we should consider shipping it, although perhaps we'll want to wait to fix Bug 1863140 first.

Comment 1

[Dan Minor [:dminor]]

Discussed this today, we'll wait for Bug 1863140 to be fixed, unless we see significant enough web compatibility problems that would be fixed by shipping our partial implementation.

Comment 2

[Dan Minor [:dminor]]

This will probably ship in Firefox 146.

Comment 3

[Jon Coppeard (:jonco)]

Attachment: Bug 1966745 - Part 1: Add a shell switch to disable symbols as weakmap keys r?sfink

Comment 4

[Jon Coppeard (:jonco)]

Attachment: Bug 1966745 - Part 2: Enable symbols as weakmap keys by default r?sfink

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/959de40681ae
https://hg.mozilla.org/integration/autoland/rev/b08def904768
Part 1: Add a shell switch to disable symbols as weakmap keys r=sfink
https://github.com/mozilla-firefox/firefox/commit/644f0db17749
https://hg.mozilla.org/integration/autoland/rev/860e9251e028
Part 2: Enable symbols as weakmap keys by default r=sfink

Comment 6

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/b08def904768
https://hg.mozilla.org/mozilla-central/rev/860e9251e028

Comment 7

[Hamish Willee]

FF146 MDN work for this can be tracked in https://github.com/mdn/content/issues/41868