import { PieConfig, PieWidgetConfig } from './types';
export declare const pieDownloadConfig: ({ refUI }: import('../loader').ConfigProps) => import('../actions').DownloadItem<import('../echart').EchartWidgetData>[];
/**
 * Generates ECharts configuration for pie and donut chart widgets. Falls back to a horizontal bar layout when multiple data series are provided.
 *
 * @param props - Pie chart configuration including data and theme.
 * @returns Widget config with ECharts option object.
 */
export declare function pieConfig(props: PieConfig): PieWidgetConfig;