@visactor/vchart/esm/series/venn/tooltip-helper.js

charts lib based @visactor/VGrammar

import { BaseSeriesTooltipHelper } from "../base/tooltip-helper";

import { getVennSeriesDataKey } from "./util";

export class VennTooltipHelper extends BaseSeriesTooltipHelper {
    constructor() {
        super(...arguments), this.dimensionTooltipTitleCallback = datum => getVennSeriesDataKey(null == datum ? void 0 : datum[this.series.getDimensionField()[0]]), 
        this.markTooltipKeyCallback = datum => getVennSeriesDataKey(null == datum ? void 0 : datum[this.series.getDimensionField()[0]]);
    }
}
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