import type { VisualizationOptions } from '../../types';
/**
 * WaterfallDataItem is the type for each data item in the waterfall chart.
 */
export type WaterfallDataItem = {
    category: string;
    value?: number;
    isIntermediateTotal?: boolean;
    isTotal?: boolean;
};
/**
 * WaterfallConfig defines the configuration for rendering the waterfall chart.
 */
export interface WaterfallConfig {
    type?: 'waterfall';
    data: WaterfallDataItem[];
    theme?: 'default' | 'academy' | 'dark';
    title?: string;
    axisXTitle?: string;
    axisYTitle?: string;
    style?: {
        backgroundColor?: string;
        /**
         * Custom color palette for waterfall bars.
         * Array order: [0] positive color, [1] negative color, [2] total/intermediate-total color.
         * Defaults: ['#FF4D4F', '#2EBB59', '#1783FF']
         */
        palette?: string[];
    };
}
/**
 * WaterfallInstance represents a waterfall chart instance with render/destroy.
 */
export interface WaterfallInstance {
    render: (config: WaterfallConfig) => void;
    destroy: () => void;
}
/**
 * Waterfall chart component using G2 5.0.
 *
 * @example
 * ```ts
 * const waterfall = Waterfall({
 *   container: '#container',
 *   width: 600,
 *   height: 400,
 * });
 *
 * waterfall.render({
 *   type: 'waterfall',
 *   data: [
 *     { category: '期初利润', value: 100 },
 *     { category: '销售收入', value: 80 },
 *     { category: '运营成本', value: -50 },
 *     { category: '税费', value: -20 },
 *     { category: '总计', isTotal: true },
 *   ],
 *   theme: 'academy'
 * });
 *
 * waterfall.destroy();
 * ```
 */
export declare const Waterfall: (options: VisualizationOptions) => WaterfallInstance;