import { Renderer2, ElementRef, NgZone, OnDestroy } from "@angular/core";
import { Subject } from "rxjs";
import * as i0 from "@angular/core";
/**
 * Pass events to a given observable subject without triggering change detection
 *
 * Usage:
 * <button [ev-observe]="subject" ev-events="click"></button>
 *
 * ...
 *
 * export class ExampleComponent implements OnInit {
 *  public subject = new Subject();
 *
 *  constructor(private zone: NgZone) {}
 *
 *  ngOnInit() {
 *      this.subject
 *          .throttleTime(300)
 *          .filter(someCondition)
 *          ...
 *          .subscribe($event => this.zone.run(() => this.handleEvent($event)));
 *  }
 * }
 *
 * Notes:
 * The [ev-events] property can be either a string or an array of strings to handle multiple events
 *
 */
export declare class ObserveEventDirective implements OnDestroy {
    private elm;
    private renderer;
    private zone;
    observe: Subject<any>;
    set events(e: string | string[]);
    private listeners;
    constructor(elm: ElementRef, renderer: Renderer2, zone: NgZone);
    ngOnDestroy(): void;
    private unregisterAll;
    private addListener;
    private fireEvent;
    static ɵfac: i0.ɵɵFactoryDeclaration<ObserveEventDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ObserveEventDirective, "[ev-observe]", never, { "observe": "ev-observe"; "events": "ev-events"; }, {}, never>;
}