import { EventEmitter, ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare class ScrollSpyDirective {
    private _el;
    spiedTags: any[];
    offset: number;
    sectionChange: EventEmitter<string>;
    private currentSection;
    constructor(_el: ElementRef);
    track(event: any): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ScrollSpyDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ScrollSpyDirective, "[scroll-spy]", never, { "spiedTags": "spiedTags"; "offset": "offset"; }, { "sectionChange": "sectionChange"; }, never>;
}
//# sourceMappingURL=scroll-spy.directive.d.ts.map