import { ChangeDetectorRef, ElementRef, OnDestroy } from "@angular/core";
import { ResizeObserverEntry } from "@juggle/resize-observer";
import { Observable } from "rxjs";
import { ResizeObserverClass } from "./resize-observer";
import * as i0 from "@angular/core";
export declare class NgResizeObserver extends Observable<ResizeObserverEntry> {
}
export declare class ResizeObserverService implements OnDestroy {
    private chgRef;
    private el;
    private ResizeObserver;
    private onResizeSubject;
    private resizeObserver;
    onResize: Observable<ResizeObserverEntry>;
    constructor(chgRef: ChangeDetectorRef, el: ElementRef, ResizeObserver: ResizeObserverClass);
    ngOnDestroy(): void;
    private observe;
    private unobserve;
    private get target();
    static ɵfac: i0.ɵɵFactoryDeclaration<ResizeObserverService, [null, { optional: true; }, null]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ResizeObserverService>;
}
export declare function ngResizeObserverFactory(resizeObserverService: ResizeObserverService): Observable<ResizeObserverEntry>;
export declare const NgResizeObserverProvider: {
    provide: typeof NgResizeObserver;
    useFactory: typeof ngResizeObserverFactory;
    deps: (typeof ResizeObserverService)[];
};