Component Communication (useFormStatus)

Deep State Access

The Shift: You have a SubmitButton nested deep in a form. In React 18, you had to pass loading props down 5 levels. In React 19, the child can "ask" the parent form if it's busy.

👀 Preview

The SubmitButton automatically knows when the form is submitting, without any props being passed down.

📚 Explanation

`useFormStatus` allows child components to access the pending state of their parent form without prop drilling. The hook automatically connects to the nearest form ancestor and provides the pending status.