How to dynamically get property updates from the new Class() singleton if they happen in the constructor?

Question

JavaScript

There is a singleton class with the isActive property, the value is overwritten in the constructor. How to receive isActive changes outside the class in real time? Using mobx didn't help.

const track = new Class();
console.log(track.isActive)

only the first value is returned and there is no response to subsequent changes.

Answer 1

The problem turned out to be incredibly stupid.
It was necessary to fix the export.

const createdClass = new Class();
export createdClass;