export function getListenersCounter(): number; export default class EventManager { constructor(context?: object); context: any; addEventListener(element: Element, eventName: string, callback: (event: Event) => void, options?: boolean | AddEventListenerOptions): () => void; removeEventListener(element: Element, eventName: string, callback: () => void, onlyOwnEvents?: boolean): void; clear(): void; destroy(): void; destroyWithOwnEventsOnly(): void; fireEvent(element: Element, eventName: string): void; }