Function useAsyncFn

client/shared/hooks/useAsyncFn.ts:36–69

(
  fn: T,
  deps: DependencyList = [],
  initialState: StateFromFunctionReturningPromise<T> = { loading: false }
)

> = [StateFromFunctionReturningPromise<T>, T];

export function useAsyncFn<T extends FunctionReturningPromise>(
  fn: T,
  deps: DependencyList = [],
  initialState: StateFromFunctionReturningPromise<T> = { loading: false }
): AsyncFnReturn<T> {
  const lastCallId = useRef(0);
  const isMounted = useMountedState();
  const [state, set] =
    useState<StateFromFunctionReturningPromise<T>>(initialState);

  const callback = useCallback((...args: Parameters<T>): ReturnType<T> => {
    const callId = ++lastCallId.current;
    set((prevState) => ({ ...prevState, loading: true }));

    return fn(...args).then(
      (value) => {
        isMounted() &&
          callId === lastCallId.current &&
          set({ value, loading: false });

        return value;
      },
      (error) => {
        isMounted() &&
          callId === lastCallId.current &&
          set({ error, loading: false });

        return error;
      }
    ) as ReturnType<T>;
  }, deps);

  return [state, callback as unknown as T];
}