export interface UseContentRectResult<T> {
    contentRect: DOMRectReadOnly;
    ref: (refValue: T) => void;
}
/**
 * Returns a callback ref that will track the `contentRect` of a given refValue.
 * If the `contentRect` is undefined, it will be set to a new `DOMRect` with
 * zeros for all dimensions.
 * @param map Optional mapping function to extract an HTMLElement from the given
 * refValue
 * @returns Content rect and a ref callback
 */
export declare function useContentRect<T>(map?: (ref: T) => HTMLElement | null): UseContentRectResult<T>;
export default useContentRect;
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