import { ElementRef, Renderer2 } from '@angular/core';
export declare class CustomEventListener {
    private elementRef;
    private renderer;
    private prevPopoverEventHandlersString;
    allowedEvents: string[];
    listenerFn: Map<string, () => void>;
    constructor(elementRef: ElementRef, renderer: Renderer2);
    updateEventHandlers(popoverEventHandlers: Map<string, Function>): void;
    addEvent(eventName: string, event: (e: any) => void): void;
    removeEvent(eventName: string): void;
}
export declare const stringifyMap: (map: Map<string, Function | null> | undefined) => string;