Function onOneOf

core/utils/eventManager.ts:60–73

(
    names: N[],
    handler: EventHandler<EventsMap[N]>
  )

  }

  function onOneOf<N extends keyof EventsMap>(
    names: N[],
    handler: EventHandler<EventsMap[N]>
  ) {
    const cleanup = createCleanupObject();

    for (const name of names) {
      cleanup.next = on(name, handler);
    }

    return () => {
      cleanup.clean();
    };
  }

  function hasListeners<N extends keyof EventsMap>(name: N) {
    return !!subscribersMap.get(name)?.size;