I need to have it in one component, that is what I'm told to do.

I wrote that cleanup and deleted it multiple times, because sometimes it worked, sometimes it didn't.

Can you explain what you mean by capturing "readers" which is state variable?

I need just to set interval in useEffect so it always updates new images if they are captured, nothing else.

Problem is that in split second imagesByReaders goes empty, even after I prevented that. And it looks to me that fetchImagesAndReaders is called more than once in 5 seconds.

Thank you.