import { Node } from '@antv/x6';
/**
 * 遍历节点
 * @param node
 * @param arrow
 * @param callback
 * @param length_
 * @returns
 */
export declare function FlowIterator(node: Node, arrow: 'up' | 'down', callback: (node: Node, length: number) => boolean | void, length_?: number): void;
