feat(nimbus): warn on deprecated fxms-message placeholder features - #17154
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jaredlockhart wants to merge 4 commits into
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jaredlockhart wants to merge 4 commits into
jaredlockhart wants to merge 4 commits into
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Because * The numbered fxms-message placeholder features cannot co-enroll with other deliveries. * Firefox 152 added a single co-enrolling fxms-message feature that replaces them. This commit * Warns when a desktop delivery uses a numbered placeholder and every targeted version supports the co-enrolling feature. * Determines availability from the feature manifest rather than a hardcoded version. Fixes #17149
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Local render on a seeded draft desktop experiment attaching The warning appears as a bullet on the existing warning card, labelled "Deprecated messaging feature ID". It is non-blocking, and it has no Learn more link of its own.
The full message is in the bullet's tooltip:
The message names the deprecated feature IDs first and the replacement second. One placeholder reads |
jaredlockhart
marked this pull request as ready for review
September 16, 2026 21:01
jaredlockhart
requested review from
RJAK11,
freshstrangemusic,
mikewilli and
yashikakhurana
as code owners
September 16, 2026 21:01
Because * The instruction to use fxms-message was buried behind the rationale. This commit * Leads the warning with the deprecated feature IDs and the replacement to use. * Picks the verb from the placeholder count so one or several IDs both read correctly. Fixes #17149
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Because
This commit
Fixes #17149