Node.js 使用Nodejs类型脚本连接到MongoDB不工作

我正在尝试将我的nodejs typescript api连接到MongoDB集群。当我尝试生成迁移时，它返回一个错误

迁移运行期间出错：错误：在中找不到任何连接选项 任何orm配置文件

我的档案如下：

class App {

   public app: express.Application;

   private userRoutes: UserRoutes = new UserRoutes();
   private authenticationRoutes: AuthenticationRoutes = new AuthenticationRoutes();
   private common_routes: CommonRoutes = new CommonRoutes();

   constructor() {
      this.app = express();
      
      this.config();
      this.mongoSetup();
      this.app.use('/swagger', swaggerUi.serve, swaggerUi.setup(swaggerDocument));
      this.initRoutes();    
   }

   private initRoutes() {
      this.userRoutes.route(this.app);
      this.authenticationRoutes.route(this.app);
      this.common_routes.route(this.app);
   }

   private config(): void {
      // support application/json type post data
      this.app.use(bodyParser.json());
      //support application/x-www-form-urlencoded post data
      this.app.use(bodyParser.urlencoded({ extended: false }));
   }

   private async mongoSetup() {
       await createConnection({
         type: "mongodb",
         host: "localhost",
         port: 27017,
         database: "test",
         useUnifiedTopology: true 
     }).then( async connection => {
      await connection.runMigrations();
   }).catch(error => console.log(error));

   }

}
export default new App().app;

我正在努力：

npx typeorm migration:create -n first-d lib/core/migrations
npx typeorm migration:generate -n userEntity -d lib/core/migrations

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你能列出你的项目文件结构吗？