Mmm perhaps I am missing something, did you try this?
useEffect(() => { let timer; if (start === true) { timer = counter > 0 && setTimeout(() => setCounter(counter - 1), 1000) } return () => { clearTimeout(timer) } }, [start, counter, setCounter])
And we could even get rid of counter:
counter
useEffect(() => { let timer; if (start === true) { timer = setTimeout(() => setCounter(x => x === 0 ? 0 : x - 1), 1000) } return () => { clearTimeout(timer) } }, [start, setCounter])
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Mmm perhaps I am missing something, did you try this?
And we could even get rid of
counter
: