@visactor/vmind/esm/atom/chartGenerator/spec/transformers/venn.js

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import { registerVennChart } from "@visactor/vchart";

import { color, discreteLegend } from "./common";

export const vennData = context => {
    const {dataTable: dataTable, spec: spec, cell: cell} = context, id2dataMap = {}, setsField = cell.color[0], nameField = cell.color[1];
    return dataTable.forEach((data => {
        id2dataMap[data[setsField]] ? id2dataMap[data[setsField]].sets.push(data[nameField]) : id2dataMap[data[setsField]] = {
            sets: [ data[nameField] ],
            value: data[cell.size]
        };
    })), spec.data = {
        values: Object.values(id2dataMap)
    }, {
        spec: spec
    };
};

export const vennField = context => {
    const {spec: spec} = context;
    return spec.valueField = "value", spec.categoryField = "sets", spec.seriesField = "sets", 
    {
        spec: spec
    };
};

export const registerChart = context => {
    const {spec: spec} = context;
    return "venn" === spec.type && registerVennChart(), {
        spec: spec
    };
};

export const pipelineVenn = [ registerChart, vennData, color, vennField, discreteLegend ];
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