import { InjectionToken } from '@angular/core';
import type { Observable } from 'rxjs';
export declare const CUI_STORAGE_LIST_SERVICE_TOKEN: InjectionToken<CuiStorageListService<CuiStorageBase>>;
export interface CuiStorageListService<T = CuiStorageBase> {
    getChildren?(children: CuiStorage<T>, prevChildrens: CuiStorage<T>[]): Observable<CuiStorage<T>[]>;
    getElements?(element: CuiStorage<T>, prevElements: T[]): Observable<T[]>;
}
export interface CuiStorageBase {
    readonly id: string;
    readonly name?: string;
    readonly title?: string;
}
export interface CuiStorage<T = CuiStorageBase> extends CuiStorageBase {
    readonly elements?: T[];
    readonly children: CuiStorage<T>[] | string[];
}