scenarios when trying to update state in nested `setTimeout` inside React functional component
I recently switched to I recently switched to I'm writing unit tests and I tried several approaches but none seem to work... I've been struggling with this for a few days now and could really use some help. I'm working with an scenario where I'm using a `setTimeout` inside a React functional component to delay a state update, but I'm working with unexpected behavior. Specifically, I'm seeing stale state values because of how closures work in JavaScript. I have a simple counter application where I want to increment the count after a delay, but the state doesn't seem to update correctly when I log it inside the `setTimeout` function. Here's the relevant part of my code: ```javascript import React, { useState } from 'react'; const Counter = () => { const [count, setCount] = useState(0); const incrementCount = () => { setTimeout(() => { console.log(count); // This logs the stale value, not the updated value. setCount(count + 1); }, 1000); }; return ( <div> <p>Count: {count}</p> <button onClick={incrementCount}>Increment after 1 second</button> </div> ); }; export default Counter; ``` When I click the button, I expect the count to increment after 1 second, but instead, the console logs the previous value of `count`. I've tried using the functional update form of `setCount`, like this: ```javascript setCount(prevCount => prevCount + 1); ``` But when I use that inside the `setTimeout`, it still doesn't behave as expected. Can someone explain how I can properly update the state in this situation? Is there a better way to handle delayed updates in React functional components, especially when dealing with closures? How would you solve this? This is part of a larger API I'm building. Has anyone else encountered this? This is happening in both development and production on CentOS. Any suggestions would be helpful. Any feedback is welcome!