/**
 * Force a rerender as soon as an observed element changed its size.
 * The rerender can also be debounced.
 * @param refElem Reference of the element whose size we want to observe.
 * @param debounceDelay If defined, debounce the dimension update.
 * @returns `[width, height]`
 */
export declare function useResizeObserver(element: HTMLElement | SVGElement | null, debounceDelay?: number): [width: number, height: number];
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