@visactor/vchart/esm/util/mark.js

charts lib based @visactor/VGrammar

export const isCollectionMark = type => "line" === type || "area" === type;

export const getDatumOfGraphic = g => {
    if (!g || !g.context) return null;
    const {data: data, markType: markType} = g.context;
    return "line" === (type = markType) || "area" === type ? data : null == data ? void 0 : data[0];
    var type;
};

export const findMarkGraphic = (rootGroup, target) => {
    let g = target;
    for (;(null == g ? void 0 : g.parent) && g.parent !== rootGroup; ) if (g = g.parent, 
    g.context) return g;
    return null;
};
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