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feat(react-utilities): enhance useFirstMount hook to support React concurrent mode with useEffect for first mount tracking #34985
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dmytrokirpa
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📊 Bundle size reportUnchanged fixtures
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Pull request demo site: URL |
…ncurrent mode with setEffect for first mount tracking
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layershifter
approved these changes
Aug 7, 2025
…of realPress for better compatibility
dmytrokirpa
commented
Aug 8, 2025
@@ -203,9 +204,9 @@ describe('FlatTree', () => { | |||
</TreeTest>, | |||
); | |||
cy.focused().should('not.exist'); | |||
cy.document().realPress('Tab'); |
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realPress
supports React 17 and 18, but not 19.
press
is compatible with React 18 and 19.
So, I use press
and provide a fallback for press
in Cypress 13, since it is not available there.
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Previous Behavior
The
useFirstMount
hook did not fully support React's concurrent mode, which led to timing issues with first mount tracking and caused the React 19 e2e integration tests to fail.New Behavior
useFirstMount
hook to properly support React concurrent mode usinguseEffect
for first mount trackingRelated Issue(s)