JS Windowing System Test Bug

Programming JavaScript
1

This should be passing but is not. Ran it on CodePen and is ok. Could this be a bug in the test? Thank you.

CODE:

class Size{
  constructor(width = 80, height = 60){
    this.width = width;
    this.height = height;
  }
  resize(newWidth,newHeight){
    this.width = newWidth < 1 ? 1 : newWidth;
    this.height = newHeight < 1 ? 1 : newHeight;
  }
}

ERROR:

TypeError: _windowingSystem.Size is not a constructor
2

We don’t have the full picture here. What code did you use to test your Size class in CodePen? Which test on Exercism failed?