@firefoxwebdevs For JS `fetch()` interop, in 2026 it would be nice to get proper `user-agent` header control.
It has been an allowed/customizable header according to specs since 2015, but (to the best of my knowledge) it still doesn't work on some browsers (for reference, Firefox already supports this).
It already has a WPT test: https://github.com/web-platform-tests/wpt/pull/39301
L
lucab@fosstodon.org
@lucab@fosstodon.org
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort?