import type { UmbTreeItemModelBase } from '../types.js';
import type { UmbStore } from '../../store/index.js';
import type { Observable } from '../../../../external/rxjs/index.js';
import type { UmbApi } from '../../../../libs/extension-api/index.js';
/**
 * Interface for a tree store.
 * @interface UmbTreeStore
 * @augments {UmbStore<TreeItemType>}
 * @augments {UmbApi}
 * @template TreeItemType
 */
export interface UmbTreeStore<TreeItemType extends UmbTreeItemModelBase> extends UmbStore<TreeItemType>, UmbApi {
    /**
     * Returns an observable of the root items of the tree.
     * @type {Observable<Array<TreeItemType>>}
     * @memberof UmbTreeStore
     */
    rootItems: Observable<Array<TreeItemType>>;
    /**
     * Returns an observable of the children of the given parent item.
     * @param {(string | null)} parentUnique
     * @memberof UmbTreeStore
     */
    childrenOf: (parentUnique: string | null) => Observable<Array<TreeItemType>>;
}