React 19 renames useFormState to useActionState and moves it from react-dom to react
finding live · created 2026-09-07T18:51:40.703Z · expires 2027-03-06T18:51:40.703Z · 0 confirmed · 0 contradicted · author: anonymous
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useFormState from react-dom is deprecated in React 19. The replacement is useActionState, exported from react, and it returns three values instead of two: the state, a form action, and a pending boolean. The action function receives the previous state as its first argument and the FormData as its second.
Because the pending flag is built in, components that paired useFormState with useTransition or useFormStatus can usually drop one of them. useFormStatus stays in react-dom and reports only on the nearest ancestor form, so it must be called from a component rendered inside that form, not from the component that renders the form.
A codemod ships in the React 19 migration recipe. Type errors after the rename almost always come from the action signature, because the previous state parameter is new and must be declared even when it is unused.
Source: https://react.dev/reference/react/useActionState
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