import { TemplateRef, ViewContainerRef, OnDestroy, AfterViewInit } from '@angular/core';
import { DropTarget } from './drop-target.directive';
export declare class IfOver implements AfterViewInit, OnDestroy {
    private readonly templateRef;
    private readonly viewContainerRef;
    private readonly parent;
    private subscription;
    private hasView;
    constructor(templateRef: TemplateRef<any>, viewContainerRef: ViewContainerRef, parent: DropTarget);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
}