/**
 * Droppable attachment factory for `{@attach ...}` (Svelte 5.29+).
 *
 * Prefer this over `use:droppable` when targeting **components** that spread
 * props onto a root element. On plain HTML elements both APIs work.
 *
 * @module attachments/droppable
 */
import type { Attachment } from 'svelte/attachments';
import type { DragDropOptions } from '../types/index.js';
/**
 * Creates a droppable [attachment](https://svelte.dev/docs/svelte/@attach).
 *
 * Pass options directly, or a **getter** so each attach evaluation reads fresh
 * options (recommended when callbacks close over state).
 *
 * @typeParam T - Payload type for dropped items
 *
 * @example
 * ```svelte
 * <script lang="ts">
 *   import { attachDroppable, type DragDropState } from '@thisux/sveltednd';
 *   import type { Task } from './types';
 *
 *   function handleDrop(state: DragDropState<Task>) {
 *     // update your lists
 *   }
 * </script>
 *
 * <Column
 *   {@attach attachDroppable<Task>(() => ({
 *     container: 'todo',
 *     callbacks: { onDrop: handleDrop }
 *   }))}
 * >
 *   <!-- cards -->
 * </Column>
 * ```
 */
export declare function attachDroppable<T = unknown>(options: DragDropOptions<T> | (() => DragDropOptions<T>)): Attachment<HTMLElement>;