Nodejs swagger integration - Express Router

I am aware of configuring swagger to my NodeJs project using JSON / YAML. Is there any way to automate the documentation like swagger doing for spring webservices.

Note: I am using Express Router to create endpoints.

Yes, the package swagger-autogen performs the automatic construction of the Swagger documentation.

First, install the package with: npm i swagger-autogen

If you have a endpoint/route file like this:

routes.js

const express = require('express')
const ToolsController = require('./controllers/ToolsController')

const router = express.Router()

const apiV1 = require('./controllers/ApiRoute1')

router.use('/v1', apiV1)

module.exports = router

Just declare a file called swagger.js, for example, with this:

swagger.js

const swaggerAutogen = require('swagger-autogen')()

swaggerAutogen('./swagger-output.json', ['./routes.js']);

In the package.json, add a script such as:

"scripts": {
    "swagger-autogen": "node ./swagger.js"
}

And run: npm run swagger-autogen

The Swagger documentation will be in the swagger-output.json.

To add descriptions, tags, summary, and so on, access the https://www.npmjs.com/package/swagger-autogen#endpoints

Examples: Links to projects that cover the simplest use of this module as well as the most complete use. See the links below:

Example using Router

Example without Router