React 18: working with TypeError when accessing state inside setInterval in functional components
I'm updating my dependencies and I'm dealing with I've tried everything I can think of but I've tried everything I can think of but I'm sure I'm missing something obvious here, but I'm working with React 18 and trying to implement a polling mechanism using `setInterval` inside a functional component... However, I keep running into a `TypeError: want to read properties of undefined (reading 'value')` behavior when I attempt to access state that should be updated on each interval tick. I've made sure to use the current state value properly in the `setInterval` callback, but it seems to be referencing stale state. Here's the relevant part of my code: ```javascript import React, { useEffect, useState } from 'react'; const PollingComponent = () => { const [value, setValue] = useState(0); useEffect(() => { const intervalId = setInterval(() => { console.log(value); // This logs stale value setValue(prevValue => prevValue + 1); }, 1000); return () => clearInterval(intervalId); }, []); // Empty dependency array return <div>Current Value: {value}</div>; }; export default PollingComponent; ``` The `setInterval` callback runs every second, but I'm not seeing the updated value of `value` inside the callback due to how closures work in JavaScript. I initially thought using the functional update for `setValue` would help, but it seems I'm still working with issues when trying to log the current state. Should I be including `value` in the dependency array or is there a better practice for polling in React? Any suggestions on how to fix this would be greatly appreciated! This is part of a larger web app I'm building. Any ideas what could be causing this? For context: I'm using Javascript on Linux. I'm using Javascript LTS in this project. Is there a better approach? What would be the recommended way to handle this? Thanks for your help in advance! Am I approaching this the right way? I'm working in a Windows 11 environment.