title: How do you handle api version in a Node/Express app
body: <p>I am pretty new to Node.js and I am facing the following issue.</p>
  
  <p>My middleware started with the link <code>api/v1/login</code> and a bunch of endpoints.
  Then <code>api/v1.1</code> introduced 2 more endpoints. <code>api/v1.2</code> is now the last and got some new endpoints.</p>
  
  <p>How shall I handle this api versioning in an efficient way? How do you make endpoints from a version available to the next versions as well? </p>