2003342 - [meta] Await dictionary proposal

Status: NEW

(Core :: JavaScript Engine, task, P3)

Description

[Dan Minor [:dminor]]

Bug to track https://github.com/tc39/proposal-await-dictionary, which advanced to Stage 2.7 at the November 2025 plenary.

Comment 1

[Tooru Fujisawa [:arai]]

The steps would be the following:

• (1) Add the preference and shell option. (bug 2003904)
• (2) Add an empty function for Promise.allKeyed and Promise.allSettledKeyed, behind a nightly flag and also behind the pref (bug 2003970)
• (3) Possibly factor out some shared logic from CommonPromiseCombinator and prepare the implementation of PerformPromiseAllKeyed (bug 2003971)
• (4) (or maybe at the same time as (3)) implement Promise.allKeyed and Promise.allSettledKeyed using the PerformPromiseAllKeyed or the shared helper, add basic tests (bug 2003972)
• (5) Add more tests, and possibly upstream to test262
• (6) Add fuzzing flag
• (7) Turn the pref on by default (after the advance of the proposal maybe)
• (8) Ship the feature
• (9) Remove the pref and shell option
• (?) Update the implementation whenever the proposal is modified

You can see how things have happened for other features.
https://bugzilla.mozilla.org/showdependencytree.cgi?id=1746209&hide_resolved=0