将 web-server 和 game-server 中的公共文件改为链接

shared/db/Hero.ts

@@ -1,5 +1,5 @@
 import BaseModel from './BaseModel';
-import { index, getModelForClass, prop, arrayProp, Ref, mongoose } from '@typegoose/typegoose';
+import { index, getModelForClass, prop, Ref, mongoose } from '@typegoose/typegoose';
 import Equip from './Equip';
 
 /**
@@ -57,7 +57,9 @@ export default class Hero extends BaseModel {
 
   public static async addEquip(roleId: string, hid: number, equipId: string, lean = true) {
     const hero = await HeroModel.findOneAndUpdate({ roleId, hid }, {$push: {equips: equipId}}, {new: true}).lean(lean);
-    await Equip.putOn(hero.hid, equipId);
+    if (hero) {
+      await Equip.putOn(hero.hid, equipId);
+    }
     return hero;
   }