useAbortController

Own and automatically abort a browser AbortController.

useAbortController creates a controller after hydration and aborts it when its keys change or the hook unmounts.

Signature

web.AbortController? useAbortController([
  List<Object?> keys = const [],
]);

final controller = useAbortController([requestId]);
final signal = controller?.signal;

Interactive useAbortController demo

Generation 0 • controller waiting

Each keyed generation has exactly one owned controller and cleanup aborts pending consumers.

The result is null during SSR and first hydration so markup remains deterministic.

Do not manually reuse a signal after its controller is aborted. Guard nullable access until attachment.

Use useFuture to observe a Future and useAsyncAction for user-triggered async concurrency.