如何构建树阵列从平面阵列在javascript

如何构建树阵列从平面阵列在javascript

const arr = [
   {
      "id": "12",
      "parentId": "0",
      "text": "Man",
      "level": "1",
      "children": null
   },
   {
      "id": "6",
      "parentId": "12",
      "text": "Boy",
      "level": "2",
      "children": null
   },
   {
      "id": "7",
      "parentId": "12",
      "text": "Other",
      "level": "2",
      "children": null
   },
   {
      "id": "9",
      "parentId": "0",
      "text": "Woman",
      "level": "1",
      "children": null
   },
   {
      "id": "11",
      "parentId": "9",
      "text": "Girl",
      "level": "2",
      "children": null
   }
];