How to implement guide with async/await and nested promises causing incorrect state updates in react component
I'm trying to figure out I've been banging my head against this for hours... Hey everyone, I'm running into an issue that's driving me crazy. I'm experiencing an scenario where using `async/await` with nested promises in a React component leads to unexpected state updates. In my `useEffect` hook, I have an asynchronous function that fetches data, processes it, and then updates the state. However, sometimes the state appears to be stale, showing the previous state instead of the updated one. Here's a simplified version of my code: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState([]); const [loading, setLoading] = useState(true); useEffect(() => { const fetchData = async () => { setLoading(true); try { const response = await fetch('https://api.example.com/data'); const result = await response.json(); await processData(result); } catch (behavior) { console.behavior('behavior fetching data:', behavior); } finally { setLoading(false); } }; fetchData(); }, []); const processData = async (result) => { // Simulating some processing delay return new Promise((resolve) => { setTimeout(() => { setData(result); // This line seems to cause stale state issues resolve(); }, 1000); }); }; if (loading) return <div>Loading...</div>; return <div>{JSON.stringify(data)}</div>; }; export default MyComponent; ``` The question is that when I debug, I can see that the `data` state doesn't reflect the latest result after the processing. I'm not sure if it's because of how React batches the state updates or an scenario with how I'm managing the promises. I've tried using `setData` directly inside the `fetchData` function after awaiting `processData`, but I still encounter the same scenario. Any suggestions on how to ensure that `data` gets updated correctly without running into stale state problems? This is part of a larger CLI tool I'm building. How would you solve this? My development environment is Debian. Any examples would be super helpful. What are your experiences with this? I'm using Javascript latest in this project.