import { ElementRef, OnDestroy, OnInit } from '@angular/core';
import { ScrollSpyService, ScrollSpyTarget } from '../../services/scroll/scroll-spy.service';
import * as i0 from "@angular/core";
export declare class ScrollToDirective implements OnInit, OnDestroy, ScrollSpyTarget {
    private el;
    private spy;
    private platformId;
    role: string;
    tabindex: string;
    isActive: boolean;
    constructor(el: ElementRef<HTMLElement>, spy: ScrollSpyService, platformId: object);
    ngOnInit(): void;
    ngOnDestroy(): void;
    onClick(ev: Event): void;
    onKey(ev: Event): void;
    private attr;
    private spacerBase;
    private widthAdj;
    private targetEl;
    /** selector opcional para scroller custom */
    private scrollContainer;
    private rootScrollTop;
    private pageTop;
    private computeScrollTop;
    private scrollToTarget;
    private groupIsActive;
    private activateSelfAndDeactivateSiblings;
    onScrollY(scrollY: number): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ScrollToDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ScrollToDirective, ".js-scrollto,[appScrollTo]", never, {}, {}, never, never, true, never>;
}