import { AfterContentInit, ElementRef, Renderer2 } from '@angular/core';
import * as i0 from "@angular/core";
export declare class ScrollSpyDirective implements AfterContentInit {
    private document;
    private el;
    private renderer;
    private elements;
    private currentActiveLink;
    private directNavigation;
    constructor(document: Document, el: ElementRef, renderer: Renderer2);
    ngAfterContentInit(): void;
    private collectIds;
    private _onLinkClicked;
    private _getPeerElement;
    private static getId;
    onWindowScroll(event: Event): void;
    private _cleanCurrentLink;
    private _setCurrentLink;
    static ɵfac: i0.ɵɵFactoryDeclaration<ScrollSpyDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ScrollSpyDirective, "[scroll-spy]", never, {}, {}, never>;
}