infinite-scroll function is not fired if jQuery is not explicitly imported on index.html

[yudarik]

Hi,
I use infinite-scroll on an angular 1.6.x project. and I discovered that it's not working if jQuery is not loaded explicitly directly from index.html even if jQuery is imported with webpack bandle.

Looking at the code, I can see that this function is never returns a value, instead it returns from the if statement where elem.css('none') returns a selector instead of undefined.

offsetTop = function(elem) { if (!elem[0].getBoundingClientRect || elem.css('none')) { return; } return elem[0].getBoundingClientRect().top + pageYOffset(elem); };

Any idea what is elem.css('none') used for and why is it needed here?
Removing it resolves the jQuery dependency load from index.html