import type { VisualizationOptions, VisualizationTheme } from '../../types';
/**
 * BarDataItem is the type for each data item in the bar chart.
 */
export type BarDataItem = {
    category: string;
    value: number;
    group?: string;
};
/**
 * BarConfig defines the configuration for rendering the bar chart.
 */
export interface BarConfig {
    type?: 'bar';
    data: BarDataItem[];
    group?: boolean;
    stack?: boolean;
    title?: string;
    axisXTitle?: string;
    axisYTitle?: string;
    theme?: VisualizationTheme;
    style?: {
        backgroundColor?: string;
        palette?: string[];
    };
}
/**
 * BarInstance represents a bar chart instance with render and destroy methods.
 */
export interface BarInstance {
    render: (config: BarConfig) => void;
    destroy: () => void;
}
/**
 * Bar chart component using G2 5.0.
 *
 * @example
 * ```ts
 * const bar = Bar({
 *   container: '#container',
 *   width: 600,
 *   height: 400,
 * });
 *
 * bar.render({
 *   type: 'bar',
 *   data: [
 *     { category: '2015 年', value: 80 },
 *     { category: '2016 年', value: 140 },
 *     { category: '2017 年', value: 220 },
 *   ],
 *   title: '海底捞公司外卖收入',
 *   axisXTitle: '年份',
 *   axisYTitle: '金额 （百万元）',
 * });
 *
 * bar.destroy();
 * ```
 */
export declare const Bar: (options: VisualizationOptions) => BarInstance;