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primer / react Public

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WIP: Add primer_react_css_contain_portal feature flag#7363

Draft

mattcosta7 wants to merge 6 commits intomainprimer/react:mainfrom

portal-containprimer/react:portal-containCopy head branch name to clipboard

Conversation Commits6 (6)Checks Files changed

Draft

WIP: Add primer_react_css_contain_portal feature flag#7363
mattcosta7 wants to merge 6 commits intomainfrom
portal-contain

Commits

Commits on Dec 22, 2025

Add primer_react_css_contain_portal feature flag
mattcosta7
committed
optimize oimpl
mattcosta7
committed
Apply CSS containment to shared __primerPortalRoot__ instead of individual portals
mattcosta7
committed
Apply containment to existing portal roots and warn on override
mattcosta7
committed
Optimize: only apply CSS containment once
mattcosta7
committed
Use WeakMap for containment tracking, add reset for tests
mattcosta7
committed

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