修改代码格式；

数据库查询加 lean 判断；
其它内容微调。

web-server/app/db/Counter.ts

@@ -2,21 +2,21 @@ import BaseModel from './BaseModel';
 import { index, getModelForClass, prop } from '@typegoose/typegoose';
 
 /**
-  * 短信字段接口
+  * 自增 ID
 */
 @index({ name: 1 })
 export default class Counter extends BaseModel {
 
-    @prop({ required: true })
-    name: string;
+  @prop({ required: true })
+  name: string;
 
-    @prop({ required: true, default: 1 })
-    seq: number;
+  @prop({ required: true, default: 1 })
+  seq: number;
 
-    public static async getNewCounter(name: string) {
-        const counter = await CounterModel.findOneAndUpdate({name}, {$inc: {seq: 1}}, {new: true, upsert: true}).lean();
-        return counter?.seq;
-    }
+  public static async getNewCounter(name: string, lean = true) {
+    const counter = await CounterModel.findOneAndUpdate({ name }, { $inc: { seq: 1 } }, { new: true, upsert: true }).lean(lean);
+    return counter?.seq;
+  }
 
 }