import { OnDestroy } from '@angular/core';
import { StacheNavLink } from '../nav';
import { BehaviorSubject, Subject } from 'rxjs';
import { StacheWindowRef } from '../shared';
export declare class StachePageAnchorService implements OnDestroy {
    private windowRef;
    pageAnchorsStream: Subject<StacheNavLink[]>;
    pageAnchors: BehaviorSubject<StacheNavLink>[];
    refreshRequestedStream: Subject<{}>;
    private ngUnsubscribe;
    constructor(windowRef: StacheWindowRef);
    addAnchor(anchorStream: BehaviorSubject<StacheNavLink>): void;
    ngOnDestroy(): void;
    refreshAnchors(): void;
    private removeAnchor(removedAnchor);
    private updateAnchorStream();
    private sortPageAnchors(anchorA, anchorB);
}