typescript node.js表示路由分离文件的最佳实践

Question

在Node项目中使用Express和Typescript，这将是express.Router的“最佳实践”。

示例目录结构

|directory_name
  ---server.js
  |--node_modules
  |--routes
     ---index.ts
     |--admin
        ---admin.ts
     |--products
        ---products.ts
     |--authentication
        ---authentication.ts

所以在index.ts里面它会封装和管理所有的子路由器

  
 
  
  
  
 
   
 
    
    //admin.ts (nested inside of index.ts)
    import * as express from "express";

    export = (() => {
        
        let router = express.Router();
              
        router.get('/admin', (req, res) => {
            res.json({success: true});
        });
        
        return router;
    })();
 
   
 
  

  //index.ts (master file for express.Router) import * as express from "express"; //import sub-routers import * as adminRouter from "./admin/admin"; import * as productRouter from "./products/products"; export = (() => { let router = express.Router(); // mount express paths, any addition middleware can be added as well. // ex. router.use('/pathway', middleware_function, sub-router); router.use('/products', productRouter); router.use('/admin', adminRouter); //return for revealing module pattern return router; })(); //<--- this is where I don't understand something.... 

最后我们将设置我们的server.js

  
 
  
  
  
 
   
 
    
    //the usual node setup
    //import * as *** http, body-parser, morgan, mongoose, express <-- psudocode

    import * as masterRouter from './routes/index'

    var app = express();
    //set-up all app.use()

    app.use('/api', masterRouter);

    http.createServer(app).listen(8080, () => {
          console.log('listening on port 8080')
        };
 
   
 
  

我的主要问题是index.ts（masterRouter文件）和它是IIFe的嵌套路由

export =（function（）{}）（）;

应该是为路由器编写打字稿模块的正确/最佳方法吗？

或者使用另一种模式会更好，也许是利用模式的模式

export function fnName（）{} - export class cName {} - export default。

IIFe的原因是当我将它们导入另一个文件时，我不需要初始化模块，每种类型的路由器只会有1个实例。

Answer 1

回答

在NodeJS中， 每个文件都是一个模块 。 声明变量不会污染全局命名空间 。 因此，您不需要使用良好的旧IIFE技巧来正确定位变量（并防止全局污染/碰撞）。

你会写：

  import * as express from "express";

  // import sub-routers
  import * as adminRouter from "./admin/admin";
  import * as productRouter from "./products/products";

  let router = express.Router();

  // mount express paths, any addition middleware can be added as well.
  // ex. router.use('/pathway', middleware_function, sub-router);

  router.use('/products', productRouter);
  router.use('/admin', adminRouter);

  // Export the router
  export = router;

更多关于模块

https://basarat.gitbooks.io/typescript/content/docs/project/modules.html

我的反应🌹

我的主要问题是index.ts（masterRouter文件）和它的嵌套路由是IIFe的export = (function(){})(); 应该是为路由器编写打字稿模块的正确/最佳方式

http://memesvault.com/wp-content/uploads/Hell-No-Meme-Gif-13.jpg