npm / dateformat
dateformat
What changed in dateformat 5, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-18.
4 fixes and other
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npx @unstale/cli initdateformat 54 changes
Fixes and other changes 4
N now uses the UTC weekday when the mask uses UTC: or GMT:.
W now uses the UTC week when the mask uses UTC: or GMT:.
WW now uses the UTC week when the mask uses UTC: or GMT:.
Fixed yy returning incorrect digits for years outside 1000 to 9999, including negative years.