Fix: scrollThreshold is not properly applied in inverse mode

[oscar60310]

What's happened

In inverse mode, scrollThreshold was not properly applied, so we needed to scroll to the end to trigger next function calls.

before.mp4

Solution

We should multiply it with scrollHeight as we did in normal mode.

after.mp4

[BaDo2001]

@oscar60310 Any update on this?

[oscar60310]

Hi, the fix should work, but the project seems to be inactive. Therefore, I have duplicated the code into our project instead.

[iamdarshshah]

Thanks for the careful arithmetic fix. The v7.0.0 rewrite replaced all manual scroll position math with IntersectionObserver and a buildRootMargin utility, so there's no scrollTop-based threshold calculation in the current codebase. Closing as superseded.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!