advanced patterns with `setTimeout` Inside a React Component Using Hooks
I'm migrating some code and I'm learning this framework and I've hit a wall trying to I've been banging my head against this for hours..... I've searched everywhere and can't find a clear answer. I'm working with an scenario where the `setTimeout` function seems to behave inconsistently when used inside a React functional component with hooks. I have a simple timer component that is supposed to update the displayed time every second. However, sometimes it fails to update the state correctly, and I see delays in the rendered output. Here's the code snippet: ```jsx import React, { useState, useEffect } from 'react'; const Timer = () => { const [time, setTime] = useState(0); useEffect(() => { const interval = setInterval(() => { setTime(prevTime => prevTime + 1); }, 1000); return () => clearInterval(interval); }, []); return <div>Time: {time} seconds</div>; }; export default Timer; ``` I have verified that the `useEffect` is only called once since the dependency array is empty. However, I sometimes see that the displayed time lags behind the actual time, which makes me think there's a closure scenario or something with the event loop. I’ve also tried using `setTimeout` instead of `setInterval`, but the behavior remains the same. I’m using React 17.0.2. Is there something I'm missing here, or is this expected behavior with hooks and closures? Any insights would be greatly appreciated! This is part of a larger application I'm building. What's the best practice here? I'm working on a service that needs to handle this. What am I doing wrong? Cheers for any assistance! My development environment is macOS. I'd love to hear your thoughts on this. I'm on Debian using the latest version of Javascript. Any help would be greatly appreciated!