Unresolved class function

Hi,

I have an issue where I get "unresolved function or method" on a class member.

The setup is as follows:

cls.js - The class def:

class CLS {
   constructor() {}
   boo() {
      console.log('boo');
   }
}

module.exports = CLS;

fact.js - Some module that exports a function that returns instance of the class

var CLS = require('./cls.js');

/**
 *
 * @returns {CLS}
 */
module.exports = function() {
   return new CLS();
};

main.js - My code that uses the above

var cls = require('./fact.js');

cls().boo();

Under "boo" I get the "unresolved" warning (see pic).

Here is the sample project:

https://expirebox.com/download/2a32d8a1f3c1b4a1490680ce56cd1f54.html

Thx!