1. 仅返回匹配到的元素；

// IMenuItem 仅是对数据结构的定义，可自行处理，或者使用any代替
const findCompanyViaId = (id: string, list: IMenuItem[]): any => {
   // 防止更改源数据
  const copayList: IMenuItem[] = JSON.parse(JSON.stringify(list));
  let company: IMenuItem | undefined = undefined;
  for (let i = 0; i < copayList.length; i++) {
    const item = copayList[i];
    if (item.id === id) {
      return item;
    if (item.children && item.children.length>0){
      company = findCompanyViaId(id, item.children);
      return company;
findCompanyViaId(40922872926961787, origin);
// 返回结果
  "id": "40922872926961787",
  "name": "五级单位4211",
  "children": null
2.  返回匹配到的元素及其路径上的所有元素；
// IMenuItem 仅是对数据结构的定义，可自行处理，或者使用any代替
const findCompanyTreeViaId = (id: string, list: IMenuItem[]): any => {
   // 防止更改源数据
  const copayList: IMenuItem[] = JSON.parse(JSON.stringify(list));
  const companyTree: IMenuItem[] = [];
  for (let i = 0; i < copayList.length; i++) {
    const item = copayList[i];
    if (item.id === id) {
      return item;
    } else if (item.children) {
      const company = findCompanyTreeIdViaId(id, item.children);
      item.children = company;
      return item;
findCompanyTreeViaId(40922872926961787, origin);
// 返回结果
  "id": "40953897304457339",
  "name": "一级单位",
  "children": [
      "id": "40924378111672443",
      "name": "二级单位4",
      "children": [
          "id": "40927281190797435",
          "name": "三级单位42",
          "children": [
              "id": "40920270965309563",
              "name": "四级单位421",
              "children": [
                  "id": "40922872926961787",
                  "name": "五级单位4211",
                  "children": null
3. 在2基础上的变形， 返回匹配到的元素及其路径上的所有元素的id；
// IMenuItem 仅是对数据结构的定义，可自行处理，或者使用any代替
const findCompanyTreeIdsViaId = (id: string, list: IMenuItem[]): any => {
   // 防止更改源数据
  const copayList: IMenuItem[] = JSON.parse(JSON.stringify(list));
  const companyTreeIds: string[] = [];
  for (let i = 0; i < copayList.length; i++) {
    const item = copayList[i];
    if (item.id === id) {
      return [item.id];
    } else if (item.children) {
      const companyId = findCompanyTreeIdViaId(id, item.children);
      companyId && companyTreeIds.push(item.id, companyId);
      return companyTreeIds;
findCompanyTreeIdsViaId(40922872926961787, origin);
// 返回结果
["40953897304457339",["40924378111672443",["40927281190797435",["40920270965309563",["40922872926961787"]]]]]
// 可以通过Array.flat()方法将多维数组扁平化，具体用法参考 https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/flat
// 将上述结果赋值给arr
arr.flat(Infinity);
// 结果
["40953897304457339","40924378111672443","40927281190797435","40920270965309563","40922872926961787"]