How to tell if a mobile user has scrolled up or down

I’m making a scroll detector for a website and I need to make it work for mobile. So, if a desktop user scrolled down with their mouse, it’d console log it, and vice versa. Here is the desktop code for you to analyze:

  window.addEventListener("wheel", function (event) {
    event.preventDefault();
    if (event.deltaY < 0) {
      console.log('up')
    } else {
      console.log('down')
    }
  }
});

How would I do this for mobile devices such as phones or tablets?