Function cleanupFn

packages/core/src/defer/idle_scheduler.ts:24–24

()

export function onIdle(callback: VoidFunction, injector: Injector, options?: IdleRequestOptions) {
  const scheduler = injector.get(IdleScheduler);
  const cleanupFn = () => scheduler.remove(callback);

  scheduler.add(callback, options);
  return cleanupFn;