import { BaseTransform } from './base-transform';
import type { DrawData } from './types';
/**
 * <zh/> 处理(树图)节点的收起和展开
 *
 * <en/> Process the collapse and expand of (tree)nodes
 */
export declare class CollapseExpandNode extends BaseTransform {
    private getElement;
    private handleExpand;
    beforeDraw(input: DrawData): DrawData;
}