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Updates for Safari 27 beta (second run) - #30141

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Elchi3:safari-27-beta-2
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Updates for Safari 27 beta (second run)#30141
Elchi3 wants to merge 1 commit into
mdn:mainfrom
Elchi3:safari-27-beta-2

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@Elchi3

@Elchi3 Elchi3 commented Jul 29, 2026

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This is a follow-up PR to #29823

The https://collector.openwebdocs.org project (v10.20.5) found new features shipping in Safari 27 beta (22625.1.24.11.2) on macOS 27.0 Beta (26A5388g).

ariaNotify (as found in the first run already) is now also officially mentioned as shipping:
https://developer.apple.com/documentation/safari-release-notes/safari-27-release-notes

The deprecated maxInterStageShaderComponents has been removed.

The release notes also say "Added support for the TC39 BigInt Math proposal, exposing Math-equivalent methods on BigInt such as BigInt.pow and BigInt.sqrt. (152472996)" but I can't confirm this. I think it might be behind a (JSC) flag.

@jdatapple, can you review? Am I missing things for the new Safari 27 beta?

@github-actions github-actions Bot added data:api Compat data for Web APIs. https://developer.mozilla.org/docs/Web/API size:s [PR only] 7-24 LoC changed labels Jul 29, 2026
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Tip: Review these changes grouped by change (recommended for most PRs), or grouped by feature (for large PRs).

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data:api Compat data for Web APIs. https://developer.mozilla.org/docs/Web/API size:s [PR only] 7-24 LoC changed

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