import type { IRankingBarSpec } from './interface';
import type { ICommonChartSpec } from '@visactor/vchart';
import { BaseChartSpecTransformer } from '@visactor/vchart';
export declare class RankingBarChartSpecTransformer<T extends ICommonChartSpec> extends BaseChartSpecTransformer<any> {
    transformSpec(spec: T): void;
}
export declare function processData(spec: IRankingBarSpec): {
    timeData: Map<any, any>;
    timeNodes: string[];
};