import type { DrawContext } from '../runtime/element';
import { BaseTransform } from './base-transform';
import type { DrawData } from './types';
/**
 * <zh/> 处理组合的收起和展开
 *
 * <en/> Process the collapse and expand of combos
 */
export declare class CollapseExpandCombo extends BaseTransform {
    beforeDraw(input: DrawData, context: DrawContext): DrawData;
}