fix(core): auto-start useTransition when props is a function (#2287)#2532
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🦋 Changeset detectedLatest commit: c7013b6 The changes in this PR will be included in the next version bump. This PR includes changesets to release 12 packages
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Summary
The documented function form of
useTransition—useTransition(data, () => ({ from, enter, leave }))— never ran its enter animation on mount, while the config-object form did. The function/depsform creates an internalSpringRef, and that ref was being treated as if a ref had been injected, deferring the animation until an imperativeapi.start()that the documented usage never makes. The deferral is now scoped to genuinely injected refs (config.ref), so the function form animates on mount whileuseChainorchestration and StrictMode remounts keep working.If you previously worked around this by calling
api.start()manually on the function form, the transition now also auto-starts on mount.Related issues