title: Can I use TS classes/interfaces in a simple JS mean application?
body: <p>Let's say that I have a build up MEAN application written in JS, and I want to keep it but add some classes/interfaces using TS (I want to do this because I want interfaces) and use it in my controllers to communicate with my backend. Is it possible? If yes, how do i do it?</p>
  <p>Thanks in advance!</p>