How do you handle api version in a Node/Express app

Question

I am pretty new to Node.js and I am facing the following issue.

My middleware started with the link api/v1/login and a bunch of endpoints. Then api/v1

Answer 1

Frameworks like restify are better suited for api versioning, but if you are using express and need a lightweight module to version your routes, try this npm module https://www.npmjs.com/package/express-routes-versioning

Module allows individual routes to be versioned separately. It supports basic semver versioning on the server to match multiple versions. (if needed). It is agnostic about specific versioning strategies and allows the application to set the version.

Sample code

var app = require('express')();
var versionRoutes = require('express-routes-versioning')();
app.listen(3000);
app.use(function(req, res, next) {
    //req.version is used to determine the version
   req.version = req.headers['accept-version'];
   next();
});
app.get('/users', versionRoutes({
   "1.0.0": respondV1,
   "~2.2.1": respondV2
}));

// curl -s -H 'accept-version: 1.0.0' localhost:3000/users
// version 1.0.0 or 1.0 or 1 !
function respondV1(req, res, next) {
   res.status(200).send('ok v1');
}

//curl -s -H 'accept-version: 2.2.0' localhost:3000/users
//Anything from 2.2.0 to 2.2.9
function respondV2(req, res, next) {
   res.status(200).send('ok v2');
}