Bug 296248

Summary: [JSC] Make `Intl.DateTimeFormat` Throw `RangeError` for Legacy Non-IANA Timezones to Align with TC39
Product: WebKit Reporter: Keita Nonaka <iKonnyaku40>
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Local Build   
Hardware: Unspecified   
OS: Unspecified   

Keita Nonaka
Reported 2025-07-20 11:46:58 PDT
Make `Intl.DateTimeFormat` throw RangeError for legacy non-IANA timezones to align with TC39
Attachments
Add attachment proposed patch, testcase, etc.
Keita Nonaka
Comment 1 2025-07-20 11:54:07 PDT
Pull request: https://github.com/WebKit/WebKit/pull/48303
Radar WebKit Bug Importer
Comment 2 2025-07-27 11:47:11 PDT
<rdar://problem/156857252>
EWS
Comment 3 2025-11-01 23:25:19 PDT
Committed 302447@main (12b12bf77297): <https://commits.webkit.org/302447@main> Reviewed commits have been landed. Closing PR #48303 and removing active labels.
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