import type { IConversionFunnelChartSpecBase } from './interface';
import { FunnelChartSpecTransformer } from '@visactor/vchart';
export declare class ConversionFunnelChartSpecTransformer extends FunnelChartSpecTransformer<IConversionFunnelChartSpecBase> {
    transformSpec(spec: IConversionFunnelChartSpecBase): void;
    _getDefaultSeriesSpec(spec: IConversionFunnelChartSpecBase): import("@visactor/vchart").IFunnelSeriesSpec;
}