import { RefObject } from 'react';
export interface DragState {
    dragging: boolean;
}
/**
 * A hook that provides drag functionality for an element.
 * @param ref React ref object for the draggable element
 * @param data Data to transfer during drag operation
 * @returns Object containing drag state
 *
 * @example
 * const ref = useRef(null);
 * const { dragging } = useDrag(ref, { id: 'item-1', type: 'task' });
 *
 * return (
 *   <div ref={ref} style={{ opacity: dragging ? 0.5 : 1 }}>
 *     Draggable Item
 *   </div>
 * );
 */
export declare function useDrag(ref: RefObject<HTMLElement>, data?: any): DragState;