import { type MaybeRef } from './_shared';
import type { Ref } from '@stacksjs/stx';
/**
 * Reactive element dimensions.
 * Uses ResizeObserver to track the width and height of an element.
 *
 * @param target - The element to observe (or a Ref to one)
 * @param options - Configuration with optional initial size
 * @returns Reactive width, height, and a stop function
 */
export declare function useElementSize(target: MaybeRef<HTMLElement | null>, options?: UseElementSizeOptions): UseElementSizeReturn;
export declare interface UseElementSizeOptions {
  initialSize?: { width: number, height: number }
}
export declare interface UseElementSizeReturn {
  width: Ref<number>
  height: Ref<number>
  stop: () => void
}