import { EventManager } from '@angular/platform-browser';
import { Observable } from 'rxjs';
interface Position {
    scrollHeight: number;
    scrollTop: number;
    clientHeight: number;
}
export declare class ScrollService {
    private eventManager;
    private scrollPercentTest;
    private scrollSubject;
    constructor(eventManager: EventManager);
    private onScroll;
    private isUserScrollingDown;
    private isScrollExpectedPercent;
    scrollPercent: number;
    readonly onScroll$: Observable<Document>;
    readonly onScrolledDown$: Observable<[Position, Position]>;
}
export {};