import type { Datum } from '@visactor/vchart';
import { BaseSeriesTooltipHelper } from '@visactor/vchart';
import type { ImageCloudSeries } from './image-cloud';
export declare class ImageCloudTooltipHelper extends BaseSeriesTooltipHelper {
    series: ImageCloudSeries<any>;
    get defaultShapeType(): string;
    markTooltipKeyCallback: (datum: Datum) => any;
    markTooltipValueCallback: (datum: Datum) => string | undefined;
    dimensionTooltipTitleCallback: (datum: Datum) => string | undefined;
}