/** Helper functions for safer type checking. */
declare const PRIVATE_DRAGGABLE_KEY: unique symbol;
declare const PRIVATE_DROP_TARGET_KEY: unique symbol;
export type Draggable = {
    [PRIVATE_DRAGGABLE_KEY]: true;
    /** Unique identifier of the draggable item */
    id: string;
    /** The index of the draggable item when dragging was initiated */
    initialIndex: number;
    /** Bounding rectangle of the draggable item  */
    rect: DOMRect;
    /** Unique identifier of the context instance the item belongs to */
    contextId: symbol;
};
export type DropTarget = {
    [PRIVATE_DROP_TARGET_KEY]: true;
    /** Unique identifier of the drop target */
    id: string;
    /** Unique identifier of the context instance the drop target belongs to */
    contextId: symbol;
};
export declare function getDraggable(data: Omit<Draggable, typeof PRIVATE_DRAGGABLE_KEY>): Draggable;
export declare function getDropTarget(data: Omit<DropTarget, typeof PRIVATE_DROP_TARGET_KEY>): DropTarget;
export declare function isDraggable(data: Record<string | symbol, unknown>): data is Draggable;
export declare function isDropTarget(data: Record<string | symbol, unknown>): data is DropTarget;
export {};