Debugging Async Functions in React: Race Conditions with State Updates
I'm performance testing and Currently developing a React app where I'm fetching data from an API and displaying it in a component. The challenge arises when I try to update the component state with the response data. I suspect a race condition is occurring because the `setState` function seems to not reflect the latest data in some instances. Here's a simplified version of my code: ```javascript import React, { useEffect, useState } from 'react'; const DataFetcher = () => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { const fetchData = async () => { const response = await fetch('https://api.example.com/data'); const result = await response.json(); setData(result); setLoading(false); }; fetchData(); }, []); if (loading) return <div>Loading...</div>; return <div>{JSON.stringify(data)}</div>; }; export default DataFetcher; ``` What I've tried so far includes using a cleanup function in the `useEffect`, but that hasn't helped. Additionally, I've considered using the `useRef` hook to keep track of the latest state, but I'm not entirely sure that’s the right approach. When I log the data fetched from the API, I sometimes see outdated values in my component, which makes me think that the state update might not be synchronized properly with the API call. The console logs show that `setData` executes correctly, but when the component re-renders, it appears the state isn't updated as expected. Has anyone dealt with similar issues? Any advice on how to ensure that my state updates correctly in an asynchronous flow like this? I've been using Javascript for about a year now. Cheers for any assistance! This issue appeared after updating to Javascript latest. Thanks for any help you can provide!