useTransition: Keep Your UI Responsive During State Changes
useTransition lets you update state without blocking the UI, keeping your app responsive. Use it for slow renders like filtering large lists, while the `isPending` flag shows a loading state.
useTransition prevents a slow state update from freezing your UI. It marks the update as non-urgent, allowing React to render it in the background while the user interacts with the page. This is ideal for filtering large datasets or switching complex views. The `isPending` boolean lets you show a loading state. The footgun: `startTransition` does not defer execution; it runs its function immediately but marks the state updates within as non-blocking.
Read the original → react.dev
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