import { ElementRef, OnDestroy, ViewContainerRef, ComponentFactoryResolver } from '@angular/core'; export declare class TooltipDirective implements OnDestroy { private elementRef; private componentFactoryResolver; private viewContainerRef; uiTooltip: string; tooltipPosition: string; private instance; private tooltipComponent; private tooltipFactory; constructor(elementRef: ElementRef, componentFactoryResolver: ComponentFactoryResolver, viewContainerRef: ViewContainerRef); mouseEnter(): void; mouseLeave(): void; ngOnDestroy(): void; }