import type { HeatmapItemTooltipContext, HeatmapItemTooltipParams } from './heatmap-item-tooltip.types';
/**
 * Build heatmap tooltip params from an ECharts `showTip` action and chart instance.
 */
export declare function heatmapItemParamsFromShowTip(chart: any, evt: any, ctx: HeatmapItemTooltipContext, themeSeries: Array<{
    color: string;
}>): HeatmapItemTooltipParams | null;
//# sourceMappingURL=heatmap-item-tooltip.utils.d.ts.map