import type { AdaptiveSpec } from '@visactor/vchart';
import { BarChartSpecTransformer } from '@visactor/vchart';
import type { IBar3dChartSpec } from './interface';
export declare class Bar3dChartSpecTransformer<T extends IBar3dChartSpec = IBar3dChartSpec> extends BarChartSpecTransformer<AdaptiveSpec<T, 'type' | 'series'>> {
    protected _getDefaultSeriesSpec(spec: AdaptiveSpec<T, 'type' | 'series'>): any;
}