import { ElementRef, OnDestroy } from '@angular/core';
import * as i0 from "@angular/core";
export declare class TooltipDirective implements OnDestroy {
    private el;
    content: string;
    placement: 'top' | 'bottom' | 'left' | 'right';
    private tooltipEl;
    private cleanup?;
    constructor(el: ElementRef);
    show(): void;
    hide(): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TooltipDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TooltipDirective, "[tolleTooltip]", never, { "content": { "alias": "tolleTooltip"; "required": false; }; "placement": { "alias": "placement"; "required": false; }; }, {}, never, never, true, never>;
}