perf(ButtonGroup): Scope :has() selector to direct child for O(1) lookup #7328
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🦋 Changeset detectedLatest commit: e497cb2 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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Summary
Performance optimization for ButtonGroup CSS selector to improve INP.
Changes
Scope
:has(div:last-child:empty)to direct child with>combinator.Expected INP Impact
Why this matters
The original selector scanned the entire subtree looking for an empty div. ButtonGroup interactions (hover, focus) trigger style recalc. By scoping to direct children, we get O(1) lookup.
Part of the INP performance optimization effort. See #7312 for full context.