import * as React from 'react';
import type { Rect } from '../web';
export interface EntangledPortalStateOpts {
    position?: (base: Rect, dest: Rect) => [x: number, y: number];
    onBase?: (el: HTMLSpanElement | null) => void;
    onDest?: (el: HTMLElement | null) => void;
}
export interface EntangledPortalProps extends EntangledPortalStateOpts {
    span?: React.HTMLAttributes<HTMLSpanElement>;
    children?: React.ReactNode;
}
/**
 * Renders a <span> with a <div> child rendered in a portal, such that the
 * <div> position is entangled with the <span> position, the <div> moves
 * with the <span> on resize and scroll.
 */
export declare const EntangledPortal: React.FC<EntangledPortalProps>;