import { FunnelSeriesSpecTransformer, type AdaptiveSpec } from '@visactor/vchart';
import type { IFunnel3dSeriesSpec, IFunnel3dSeriesTheme } from './interface';
export declare class Funnel3dSeriesSpecTransformer<T extends IFunnel3dSeriesSpec = IFunnel3dSeriesSpec, K extends IFunnel3dSeriesTheme = IFunnel3dSeriesTheme> extends FunnelSeriesSpecTransformer<AdaptiveSpec<T, 'type'>, K> {
    protected _transformLabelSpec(spec: AdaptiveSpec<T, 'type'>): void;
}