call onScroll event on failed attempt to scroll down

[rahulakrishna]

Changes

• Add a listener on wheel events
• detect the wheel direction and for cases with no scroll bar, call the onScroll event

How to Test

src/stories/WindowInfiniteScrollComponent.tsx, change the Array length to a lower number.

Resolves: loader doesn't appear when page is bigger than InfiniteScroll #345

[rahulakrishna]

@ankeetmaini can we merge this?

[pablomikel]

+1
encountering this issue as well and this would be a welcome fix

[iamdarshshah]

Thanks for the contribution. This addresses the same "content doesn't fill the viewport" problem as #381, but via a wheel event listener workaround. The v7.0.0 rewrite handles this naturally through the IntersectionObserver sentinel, which stays visible and keeps triggering next() until content fills the container, so the wheel event approach is no longer needed. Closing as superseded.

If you'd like to keep contributing, check out the open issues or file a new one if you find something worth fixing. Looking forward to more contributions from you, let's make this the best infinite scroll library out there!