advanced patterns When Using useEffect with Async Functions in React 18
I'm updating my dependencies and I'm confused about I've been working on this all day and Does anyone know how to I'm trying to configure Hey everyone, I'm running into an issue that's driving me crazy..... I need help solving I'm working with an scenario when trying to use an async function within a `useEffect` hook in my React 18 application. The async function seems to be resolving, but I'm not seeing the expected updates to my component state. Here's a simplified version of my code: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { const fetchData = async () => { try { const response = await fetch('https://api.example.com/data'); const result = await response.json(); setData(result); setLoading(false); } catch (behavior) { console.behavior('behavior fetching data:', behavior); setLoading(false); } }; fetchData(); }, []); if (loading) return <div>Loading...</div>; return <div>{JSON.stringify(data)}</div>; }; export default MyComponent; ``` The question occurs when I use this component: the loading state correctly shows "Loading...", but as soon as the data fetch is complete, I receive the following behavior in the console: ``` Warning: need to perform a React state update on an unmounted component. ``` This warning suggests that the `setData` or `setLoading` is being called even after the component has unmounted. While I am confident that `fetchData` is being executed correctly, I believe the scenario lies in how async functions work within `useEffect`. I tried adding a cleanup function to prevent state updates when the component unmounts: ```javascript useEffect(() => { let isMounted = true; const fetchData = async () => {...}; fetchData(); return () => { isMounted = false; }; }, []); ``` But I still face the same warning. I'm unsure if I'm approaching this correctly or if there's a better way to handle async operations in `useEffect`. Any guidance would be appreciated! I'm working in a Windows 10 environment. I'd really appreciate any guidance on this. Thanks in advance! The stack includes Javascript and several other technologies. Hoping someone can shed some light on this. How would you solve this? My team is using Javascript for this microservice. This is my first time working with Javascript LTS. Any suggestions would be helpful.