/// <reference types="svelte" />
export function popover(node: any, { delay, duration, easing, start, opacity, origin }: {
    delay?: number | undefined;
    duration?: number | undefined;
    easing?: typeof sineInOut | undefined;
    start?: number | undefined;
    opacity?: number | undefined;
    origin?: string | undefined;
}): {
    delay: number;
    duration: number;
    easing: typeof sineInOut;
    css: (t: any, u: any) => string;
};
import { sineInOut } from 'svelte/easing';