import { LitElement, TemplateResult } from 'lit';
import { Placement } from '@floating-ui/dom';
export declare class PerfTooltip extends LitElement {
    static styles: import("lit").CSSResult;
    placement: Placement;
    triggerSlot: HTMLSlotElement;
    tooltipSlot: HTMLSlotElement;
    private cleanup;
    private isHoveringTrigger;
    private isHoveringTooltip;
    private hideTimeout;
    firstUpdated(): void;
    private startHideTimeout;
    private clearHideTimeout;
    private showTooltip;
    private hideTooltip;
    render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        'perf-tooltip': PerfTooltip;
    }
}