import { AfterViewInit, ElementRef, OnDestroy, Renderer2 } from '@angular/core';
export declare class StickyDirective implements AfterViewInit, OnDestroy {
    private platformId;
    private elementRef;
    private renderer;
    top: number;
    left: number;
    stickTo: 'top' | 'left';
    unsubscribe: () => void;
    parent: HTMLElement;
    isBrowser: boolean;
    constructor(platformId: string, elementRef: ElementRef, renderer: Renderer2);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    check(): void;
    getScrollParent(node: any): any;
}