SOURCE

// 目的将在线作图网站https://www.processon.com/的思维导图导出为Xmind文件
// 第一步 将其网站的返回参数简单处理后放到下边的a变量里
// 第二步 将得到的JSON文件 导入 https://c.runoob.com/more/kitymind/index.html 转化为 .km文件
// 第三部 将.km文件 通过 https://naotu.baidu.com/home 转化为 .xmind文件
const a = {
  "leftChildren": [
    {
      "parent": "root",
      "lineStyle": {
        "randomLineColor": "rgb(255,204,204)"
      },
      "children": [
        {
          "parent": "45e3fc3c6c24",
          "children": [],
          "id": "47b321b4589c",
          "title": "子主题"
        },
        {
          "parent": "45e3fc3c6c24",
          "children": [],
          "id": "9bade95a458c",
          "title": "子主题"
        }
      ],
      "id": "45e3fc3c6c24",
      "title": "分支主题"
    },
    {
      "parent": "root",
      "lineStyle": {
        "randomLineColor": "rgb(51, 156, 168)"
      },
      "children": [],
      "id": "891aff16ce83",
      "title": "分支主题"
    },
    {
      "parent": "root",
      "lineStyle": {
        "randomLineColor": "#80BC42"
      },
      "children": [
        {
          "parent": "bb10e3347b4c",
          "children": [],
          "id": "734d71cfc4a4",
          "title": "子主题"
        },
        {
          "parent": "bb10e3347b4c",
          "children": [],
          "id": "2881e7709f64",
          "title": "子主题"
        }
      ],
      "id": "bb10e3347b4c",
      "title": "分支主题"
    }
  ],
  "note": "",
  "children": [
    {
      "parent": "root",
      "lineStyle": {
        "randomLineColor": "#e85d4e"
      },
      "children": [
        {
          "parent": "e520c01f9a71",
          "children": [],
          "id": "ee503ee08072",
          "title": "子主题"
        },
        {
          "parent": "e520c01f9a71",
          "children": [],
          "id": "ec6a353f066d",
          "title": "子主题"
        }
      ],
      "style": {
        "color": "#null"
      },
      "id": "e520c01f9a71",
      "title": "分支主题"
    },
    {
      "parent": "root",
      "lineStyle": {
        "randomLineColor": "rgb(232, 124, 37)"
      },
      "children": [],
      "id": "33ecba8c77f1",
      "title": "分支主题"
    },
    {
      "parent": "root",
      "lineStyle": {
        "randomLineColor": "#FDB813"
      },
      "children": [
        {
          "parent": "7899be7fe6eb",
          "children": [],
          "id": "458fc80f4609",
          "title": "子主题"
        },
        {
          "parent": "7899be7fe6eb",
          "children": [],
          "id": "83b70b98288d",
          "title": "子主题"
        }
      ],
      "id": "7899be7fe6eb",
      "title": "分支主题"
    }
  ],
  "background": "#ffffff",
  "root": true,
  "style": {
    "background-color": "#ffffff"
  },
  "theme": "colorLines",
  "id": "root",
  "title": "中心主题",
  "lines": {},
  "structure": "mind_free"
}

// const b = {
//     "data": {
//         "id": "cvgu4fdbbu00",
//         "text": "中心主题"
//     },
//     "children": [
//         {
//             "data": {
//                 "id": "cvgu4h256lc0",
//                 "text": "分支主题1"
//             },
//             "children": [
//                 {
//                     "data": {
//                         "id": "cvgu4n7y5ag0",
//                         "text": "分支主题"
//                     },
//                     "children": []
//                 }
//             ]
//         }]
// }

const b = {}

function convertObject(source) {
    let target = {}
    // 遍历所有字段
    target.data = {
        id: source.id,
        text: source.title
    }
    if(Array.isArray(source.children) && source.children.length > 0){
        target.children = source.children.map(item => convertObject(item))
    }else{
        target.children = []
    }
    return target;
}

console.log(JSON.stringify(convertObject(a)))