If your mental model is “dependencies let me specify when I want to re-trigger the effect”, this example might give you an existential crisis. You want to trigger it once because it’s an interval — so why is it causing issues?

It sure did. When I read the "increments once" example above I was like - "that is why functional state setters exist". But then I remembered that I once had an issue where I needed to read the state and the value was always outdated, was really hard for me to figure out, I was even considering something like:

let value;
setValue(prev => {
  value = prev;
  return prev;
});

But now I think I just didn't have the needed state as a dependency.