Currently websites using AOS are failing the best-practices section in the Lighthouse-Test, due to the issue "Does not use passive listeners to improve scrolling performance", like described in the docs.

This is:

• Feature request

Expected Behavior

All scroll-event-listeners are marked as passive listeners.

Possible Solution

Here

  window.addEventListener(
    'scroll',
    throttle(() => {
      handleScroll($aosElements, options.once);
    }, options.throttleDelay),
    { passive: true }
  );

I'm going to provide a PR.