import { ElementRef, EventEmitter, OnChanges, OnDestroy, OnInit, SimpleChanges } from '@angular/core';
import * as i0 from "@angular/core";
export declare class InViewportDirective implements OnInit, OnDestroy, OnChanges {
    private elementRef;
    threshold: number;
    debounceTime: number;
    condition: boolean;
    inViewport: EventEmitter<any>;
    private observer;
    private intersectionSubject;
    private isObserving;
    private subscriptions;
    constructor(elementRef: ElementRef<HTMLElement>);
    ngOnInit(): void;
    ngOnChanges(change: SimpleChanges): void;
    ngOnDestroy(): void;
    private handleIntersection;
    static ɵfac: i0.ɵɵFactoryDef<InViewportDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDefWithMeta<InViewportDirective, "[ngMiamInViewport]", never, { "threshold": "threshold"; "debounceTime": "debounceTime"; "condition": "condition"; }, { "inViewport": "inViewport"; }, never>;
}
//# sourceMappingURL=in-viewport.directive.d.ts.map