import type { NavigationTreeNodeState, NavigationTreeServiceNode, NavigationTreeState } from './types';
export declare function isServiceNode(node: NavigationTreeNodeState | NavigationTreeServiceNode): node is NavigationTreeServiceNode;
export declare function getServiceNode(node: NavigationTreeNodeState, level: number): NavigationTreeServiceNode | void;
type TraverseDFSVisit = (node: NavigationTreeNodeState, level: number, path: string, state: NavigationTreeState) => void;
export declare function traverseDFS(state: NavigationTreeState, path: string, visit: TraverseDFSVisit, level?: number): void;
export {};