306233 2026-01-25 16:27:17 -0800 [JSC] remove feature flag for `Map.prototype.getOrInsert` et al 2026-01-25 18:01:16 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 306234 1 hi hi webkit-bug-importer oldest_to_newest 2174962 0 hi 2026-01-25 16:27:17 -0800 it is now stage 4 🎉 <https://github.com/tc39/proposal-upsert> <https://tc39.es/proposal-upsert/> 2174963 1 hi 2026-01-25 16:31:40 -0800 Pull request: https://github.com/WebKit/WebKit/pull/57223 2174977 2 ews-feeder 2026-01-25 18:00:46 -0800 Committed 306182@main (8e8153993988): <https://commits.webkit.org/306182@main> Reviewed commits have been landed. Closing PR #57223 and removing active labels. 2174978 3 webkit-bug-importer 2026-01-25 18:01:16 -0800 <rdar://problem/168887856>