[scheduler] Use standalone month format for calendar headers#22841
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adamowski10 wants to merge 2 commits into
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[scheduler] Use standalone month format for calendar headers#22841adamowski10 wants to merge 2 commits into
adamowski10 wants to merge 2 commits into
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Could a maintainer please add the
scope: schedulerandtype: buglabels? I don't have permission to add labels to this PR.Problem
In locales with grammatical month forms (Polish, Czech, Russian, Finnish, etc.), scheduler calendar headers used the date-fns formatting month token (
MMMM) instead of the standalone token (LLLL).For example in Polish, the header showed „czerwca 2026” (genitive) instead of „Czerwiec 2026” (nominative).
Day-with-month patterns such as „13 czerwca” were already correct and should keep using
MMMM.Fix
Introduce
monthFullLetterStandalone(LLLL) in the scheduler date-fns adapter and use it for standalone month titles:Keep
monthFullLetter(MMMM) for day-with-month formatting.This aligns scheduler with Date Pickers, which already use
LLLLfor month names.Summary
Fixes grammatically incorrect month headers in inflected locales without changing correct day-with-month formatting.
Changes
monthFullLetterStandalonetoTemporalAdapterFormatsLLLLinTemporalAdapterDateFnsEventCalendarintegration testsTest plan
pnpm test:unit --project "x-scheduler-internals" --runpnpm test:unit --project "x-scheduler" --runpnpm eslintpnpm prettier