import type { FreeformItemData } from '../types/index.js';
import { type DropZoneEntry } from './useDropZoneRegistry.js';
/**
 * Handles SOURCE side of cross-list drag:
 * - Detects when dragging over external drop zones
 * - Updates global registry with hover state
 */
export declare function useExternalDrag(ownDropZoneId?: string): {
    currentExternalZone: import("vue").Ref<{
        id: string;
        element: HTMLElement;
        accept?: ((items: FreeformItemData[]) => boolean) | undefined;
    } | null, DropZoneEntry | {
        id: string;
        element: HTMLElement;
        accept?: ((items: FreeformItemData[]) => boolean) | undefined;
    } | null>;
    detectExternalZone: (pos: {
        x: number;
        y: number;
    }, draggedItems: FreeformItemData[]) => void;
    finishExternalDrag: (draggedItems: FreeformItemData[]) => {
        zoneId: string;
        dropIndex: number;
        containerId: string | null;
    } | null;
    cleanup: () => void;
};