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@thejlifex/ngx-scroll-spy

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An Angular library that can spy the position of elements (inside a scrollable container) and emit the currently active (visible) element in the viewport.

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import { ElementRef, OnInit, OnDestroy } from '@angular/core'; import { ScrollSpyService } from './scroll-spy.service'; import * as i0 from "@angular/core"; /** * Adds this element as spy-target and starts to observe this target. * * Automatically removes this element as spy-target and stops observing this target when the element is destroyed. */ export declare class SpyTargetDirective implements OnInit, OnDestroy { private elementRef; private scrollSpyService; private platformId; /** * ID for this spyTarget. */ spyTargetId: string; /** * @optional * * ID for the spyTargetContainer containing this spyTarget. */ spyTargetContainerId?: string; private target; constructor(elementRef: ElementRef<Element>, scrollSpyService: ScrollSpyService, platformId: string); ngOnInit(): void; ngOnDestroy(): void; static ɵfac: i0.ɵɵFactoryDeclaration<SpyTargetDirective, never>; static ɵdir: i0.ɵɵDirectiveDeclaration<SpyTargetDirective, "[spyTarget]", never, { "spyTargetId": "spyTargetId"; "spyTargetContainerId": "spyTargetContainerId"; }, {}, never, never, true>; }