Undestanding the flow of swagger UI - node.js

I am trying to mock the REST API using swagger.. I currently created nodejs project in which the default js appreas which is hello_world.js in ./api/controllers/hello_world.js.
Now I want to create a new controller and want to refer that to my YAML, that is from swaggerUI.. How can I do it? Any link would be much useful.
I am only mocking APIS, not developing.
Many thanks in advance.

Checkout the swagger codegen project, which generates server stubs based on the api specification. Node.js is among the supported languages: https://github.com/swagger-api/swagger-codegen

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Swagger Codegen For Nestjs

I have created apis endpoint with Swaggerhub and successfully exported to run with asp.net core. I want to test the same apis with nestjs but i found documenting with openapi but not the other way round; convert yaml to nodejs.Is there a way to generate to nestjs with typescript from OpenAPI3.0 schema?
Swagger Codegen does not offer Nestjs generator at the moment. Here is a related request but no one seems to have found the time to make the contribution yet: https://github.com/swagger-api/swagger-codegen/issues/9559
UPDATE: there's PR to add a Nestjs generator in OpenAPI Generator (a community fork of Swagger Codegen)
I believe Swagger-js-codegen can help you achieve this.
Now there seems to be one project, as far as I can see, that can generate Nest.js code from a Swagger / OpenAPI spec file:
It's called swagger-nestjs-codegen. See here on Github and here on npmjs.com. I have yet to test it, though.

Integrate swagger codegen into an existing project

I work into a existing nodeJS project and I would like to use swagger codegen to automate the documentation.
Currently I write the swagger doc after to have code and there is always a time lag between dev and production....
I find two solutions. The first generate the node js projet and after you code inside, but my project have one year and lot of code...
The second solution is to write a syntax in my code and automate the documentation after with command line but this solution don't use yaml and my actual doc is to write is Yaml...
Thanks :)
If your existing node.js project uses Express as its web framework, you could consider using swagger-spec-express which would enable you to simply annotate your existing express api with swagger info.

node.js REST client for JHipster application

I have generated jhipster web-app, it comes with REST APIs.
Now, I would like to integrate an existing node.js application to jhipster web-app.
Is there a way to generate a rest-jhipster-client from existing jhipster app? Instead of manually creating functions and calls? Currently using node-rest-client for this
Thank you!
JHipster exposes your REST API documentation using swagger.
So you should look for swagger codegen to generate your client code from swagger JSON specification file, for your Jhipster app it is available at /v2/api-docs URL.
I'm not a nodejs expert but you could have a look at this one: https://www.npmjs.com/package/swagger-js-codegen

How to generate node.js API docs using swagger

I have an application developed with Node.js/expressjs. It's working fine. Now I need to generate API document using Swagger. There is a module swagger-node. Do I need to re-write the whole app using this module or is there any other solution to use this module and what is the use of swagger-ui if using swagger-node.
Not from what I can tell. You should be able to generate your swagger project as described, and then just make sure that the information in the yaml file points to the actual controllers and methods that your code uses.
You can create a standalone yaml file that is compliant with Swagger/OpenAPI which can therefore be rendered into Swagger documentation. The Swagger-UI is useful for creating this yaml file. Swagger also offers various tools for testing APIs and generating code -- to use these effectively you will need a method for integrating the controller/model definitions in your yaml file into your existing codebase.
To achieve this integration I typically expose my existing codebase as an api of controller functions -- then import it as a module into the code generated by my documented API. This allows me to trust my API documentation without the burden of porting my whole codebase into Swagger's required directory structure. I believe this is the best currently available approach but is not always worthwhile.

Can we have multiple subapi with Swagger?

I'm developing a system with nodeJS and I use requireJS and swagger.
Now, I'm preparing to create new version of my site.
Can we have multiple subapi with swagger.
I mean, currently my swagger api is located at localhost:2052/docs and I want my system have 2 apis:
localhost:2052/docs and
localhost:2052/v2.0/docs
Is it possible with swagger, if yes, how?

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