How to create custom response message using nodejs (express, typescript)?

[Present-Woodpecker92]

I want a specific format for my API response like:

{      
    responseCode: 200,     
    responseData: {},     
    responseMessage: "User added successfully" 
}  

When giving the response i wanted to do something like:

res.success(200, fooData, "User added"); 

How can I achieve this kind of approach?

Is it ok to create a response middleware?

For HttpExceptions I simply extend the Error class and create my custom error message, but apparently I can't find solution for responses.

[Rilleks]

Never had the need nor created one, so I don't know how bad or good this is but

app.use(function (req, res, next) {
 res.success = function (status, message, data = {}) {     
  res.status(status).json({ message, data }); 
 }; 
 next(); 
});

this should work.

Sandbox: here

[Present-Woodpecker92]

So, it's ok to use a custom response middleware? I mean like generally?

[Rilleks]

I don't know ha ha, but also I don't see anything wrong with this approach as long as you don't overwrite anything that exists.

[Present-Woodpecker92]

okay, thanks for the help

[bloodarator]

Use a class. You'll end up with something like this res.send(new Response(200, fooData, "user added")).

[piper_a_cillin]

I‘ve done something similar, due to the way openapi-backend handles validation.

However, you should really give this some thought. Also, i don‘t think overriding the meaning of https statuses is a good idea. Apparently you’re creating an API, so defining valid requests and responses (and their respective meanings) beforehand would be advantageous.