求大佬们优化一下代码，屎山代码给孩子头皮想破了

秉着不写垃圾代码的原则，求大佬优化一下，最优值奉上红包
需求是这样的：

万恶后端传过来的数据：
"data":[{"province":"上海市","city":"上海市市辖区","adcode":"310118","district":"青浦区"},
{"province":"江苏","city":"苏州市","adcode":"320506","district":"吴中区"},
{"province":"山西省","city":"阳泉市","adcode":"140302","district":"城区"},
{"province":"上海市","city":"上海市市辖区","adcode":"310101","district":"黄浦区"},
{"province":"河北省","city":"石家庄市","adcode":"130123","district":"正定县"}]

需要整合成这样 elementUi 中级联选择器中的数据：
（只要有相同的就要去重并在之前的 children 下加入重复的 children ）
addressOptions: [
{
value: "zhinan",
label: "指南",
children: [
{
value: "shejiyuanze",
label: "设计原则",
children: [
{
value: "yizhi",
label: "一致",
},
{
value: "fankui",
label: "反馈",
},
{
value: "xiaolv",
label: "效率",
},
{
value: "kekong",
label: "可控",
},
],
},
{
value: "daohang",
label: "导航",
children: [
{
value: "cexiangdaohang",
label: "侧向导航",
},
{
value: "dingbudaohang",
label: "顶部导航",
},
],
},
],
},
],

我的垃圾代码：

dealWithAddressList(arr, name) {
var city = {};
return arr.reduce(function (item, ele) {
console.log(ele[name]);
if (city[ele[name]]) {
item.forEach((eles) => {
if (eles.label == ele[name]) {
eles.children.forEach((eless) => {
if (eless.value == ele.city) {
eless.children.push({
value: ele.adcode,
label: ele.district,
});
} else {
eles.children.push({
value: ele.city,
label: ele.city,
children: [
{
value: ele.adcode,
label: ele.district,
},
],
});
}
});
}
});
console.log(city[ele[name]]);
} else {
city[ele[name]] =
true &&
item.push({
value: ele.province,
label: ele.province,
children: [
{
value: ele.city,
label: ele.city,
children: [
{
value: ele.adcode,
label: ele.district,
},
],
},
],
});
}
console.log(item);
return item;
}, []);
},

求大佬优化一下，可以的话有红包奉上