gist.ts

const endpointToPromiseMap = {
  [ApiEndpoint.FetchAllGoals]: fetchUserGoals,
  [ApiEndpoint.CurrentUser]: currentUser,
};

type PromiseValue<T extends Promise<any>> = T extends Promise<infer U>
  ? U
  : never;

// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
const useFetch = <E extends ApiEndpoint, L>(endpoint: E, args?: L) => {
  const prms = endpointToPromiseMap[endpoint];
  return _useFetch<PromiseValue<ReturnType<typeof endpointToPromiseMap[E]>>, L>(
    prms as any,
    args,
  );
};

// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
const _useFetch = <T, L>(prms: (arg0?: L) => Promise<T>, args?: L) => {
  const isMounted = useRef(true);
  const [data, setData] = useState<T | null>(null);
  const [errorMessage, setErrorMessage] = useState<string>('');

  return {
    status,
    errorMessage,
    data,
  };
};