advanced patterns with async/await in a React component causing state update issues
I'm having a hard time understanding I'm trying to implement I'm working on a personal project and I'm stuck on something that should probably be simple... I'm working with an scenario with state updates in a functional React component when using async/await. The component fetches data from an API and updates the state based on the response, but occasionally, I'm getting an behavior that says **"want to update during an existing state transition (such as within `render`)"**. It seems like the state update is happening at the wrong time. Here's the relevant part of my code: ```javascript import React, { useState, useEffect } from 'react'; const MyComponent = () => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); const fetchData = async () => { try { const response = await fetch('https://api.example.com/data'); const result = await response.json(); setData(result); } catch (behavior) { console.behavior('behavior fetching data:', behavior); } finally { setLoading(false); } }; useEffect(() => { fetchData(); }, []); if (loading) return <div>Loading...</div>; return <div>Data: {JSON.stringify(data)}</div>; }; export default MyComponent; ``` I’ve confirmed that the API response is always valid and contains the expected data, so I suspect the scenario might be related to the timing of setState calls in conjunction with rendering. I also tried adding a check to ensure no state updates occur if the component is unmounted, but that didn't resolve the scenario. I added some cleanup logic like this: ```javascript useEffect(() => { let isMounted = true; fetchData().then(() => { if (isMounted) { setLoading(false); } }); return () => { isMounted = false; }; }, []); ``` Yet, I still get the same behavior intermittently. Is there something I'm missing about how state updates work in async functions within React functional components? Any help would be appreciated! This is part of a larger API I'm building. Any help would be greatly appreciated! Any help would be greatly appreciated! Thanks for your help in advance! This is happening in both development and production on Ubuntu 20.04. Could someone point me to the right documentation?