Function resolveHookState

src/misc/hookState.ts:18–27

(
  nextState: IHookStateResolvable<S>,
  currentState?: C
)

  currentState?: C
): S;
export function resolveHookState<S, C extends S>(
  nextState: IHookStateResolvable<S>,
  currentState?: C
): S {
  if (typeof nextState === 'function') {
    return nextState.length ? (nextState as Function)(currentState) : (nextState as Function)();
  }

  return nextState;
}