import { OnInit, ElementRef } from '@angular/core';
import { NgsRevealConfig } from '../services/ngs-reveal-config';
import { NgsRevealService } from '../services/ngs-reveal.service';
import { AbstractNgsRevealDirective } from './ngs-reveal-common.directive';
/**
 * Directive to add 'ScrollReveal' functionality to a <b>single DOM element</b> in the page.
 */
export declare class NgsRevealDirective extends AbstractNgsRevealDirective implements OnInit {
    private elementRef;
    visibility: string;
    /**
     * Custom configuration to use when revealing this element
     */
    _config: string | NgsRevealConfig;
    constructor(elementRef: ElementRef, ngsRevealService: NgsRevealService);
    ngOnInit(): void;
}