import type { DataItem } from './types';
interface TransformDataOptions {
    xField?: string;
    yField?: string;
}
export declare function transformData(data?: DataItem[], options?: TransformDataOptions): DataItem[];
interface GetDefaultTooltipOptions {
    yField: string;
    /** 图表颜色 */
    color: [string, string];
}
export declare function getDefaultTooltip(options: GetDefaultTooltipOptions): import("@visactor/vchart").ITooltipSpec;
export {};