import type { WaterfallSeriesModel } from './type';
/**
 * 判断是否是瀑布图的 Model 实例
 */
export declare function isWaterfallSeries(seriesModel: WaterfallSeriesModel): boolean;
export declare function filterWaterfallSeries(seriesModels: WaterfallSeriesModel[]): WaterfallSeriesModel[];
/**
 * 遍历多个瀑布图，一个瀑布图 = 一个堆叠柱状图 = 多个柱状图
 *
 * !- 瀑布图的实现基于堆叠柱状图，当前实现不考虑多列堆叠的情况
 */
export declare function eachWaterfall(seriesModels: WaterfallSeriesModel[], cb: (seriesModels_: WaterfallSeriesModel[]) => void): void;