Function useAsync

Generic async hook — wraps any async function with loading/failure/data state. Auto-executes on mount and when deps change.

If the function returns a FetchResponse (from FetchEngine methods), the .data property is automatically unwrapped, and an ok: false response sets failure: { kind: 'http', response } instead of being treated as success. useAsync wraps an arbitrary function, so it can't promise a FetchError the way useQuery does — a rejection sets failure: { kind: 'rejected', error } with the thrown value as-is.

const { data, loading, failure } = useAsync(
    () => myApi.getUsers(page),
    [page],
);