import { AfterViewInit, OnDestroy, TemplateRef } from '@angular/core';
import { BehaviorSubject, Subscription } from 'rxjs';
export declare class ScrollToTopComponent implements AfterViewInit, OnDestroy {
    customTemplate?: TemplateRef<any>;
    showAfter: number;
    parentElementSelector?: string;
    showButton: boolean;
    scroll$: Subscription;
    state$: BehaviorSubject<string>;
    parent: any;
    constructor();
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    onClick(): void;
}