docs: Use useFormState
over useActionState
#69547
Merged
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We recently merged and combined the RC docs into the main docs, so there is a single codebase. This added new icons and callouts for parts of Next.js that are experimental or in a canary release.
However, this gets a little tricky with React 19. There have been changes to
useFormState
anduseFormStatus
which differ from the latest v14.x release and 15 + React 19 RC.As 14 is still the stable release, we need to default to showing
useFormState
and add proper callouts for those on canary/RC. I also added more details to the upgrade guide for v15.