title: How to generate swagger API doc from TypeScript based Express app?
body: <p>I am able to configure swagger url using the <a href="http://www.acuriousanimal.com/2018/10/20/express-swagger-doc.html" rel="noreferrer">Express API with autogenerated OpenAPI doc through Swagger</a> article.</p>
  
  <p>I am using TypeScript and it generates <code>.js</code> files under dist which does not have any API doc comments added. Pointing <code>apis: ['../dist/*.js']</code> nor to <code>Route.ts</code> generates the API details. I am not using any rest decorator. </p>
  
  <pre><code>/**
   * @swagger
   * /:
   *    get:
   *      description: This should return ok
   */
  this.router.get("/", (req: Request, res: Response) =&gt; this.api.process(req, res));
  </code></pre>
  
  <p>The <code>Routes.ts</code> API doc looks like the above. How to generate swagger doc from this?</p>