Deal with the case of IntersectionObserver entries list being empty. #12
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I ran into a corner case when mocking the interactions with the
IntersectionObserver
in Jest.I'm using
mockAllIsIntersecting()
from react-intersection-observer and this causes theIntersectionObserver
callbacks indomobserver.ts
to be called with an empty list ofentries
, which then causes a crash in the code with this error:To deal with this corner case I added a guard in front of the condition against empty lists of entries.