import { Observable } from 'rxjs';
import { TreeBaseNode } from '../models/tree-view.model';
import * as i0 from "@angular/core";
export declare class TreeViewService {
    private nodeApi;
    getTreeNodes(nodeId: string): Observable<TreeBaseNode[]>;
    static ɵfac: i0.ɵɵFactoryDeclaration<TreeViewService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TreeViewService>;
}