import type { RadarItemTooltipContext, RadarItemTooltipParams } from './radar-item-tooltip.types';
/**
 * Build radar item tooltip params from an ECharts `showTip` payload.
 * Ignores axis-style payloads (`dataByCoordSys`).
 */
export declare function radarItemParamsFromShowTip(chart: any, evt: any, ctx: RadarItemTooltipContext, themeSeries: Array<{
    color: string;
}>): RadarItemTooltipParams | null;
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