Unexpected State Reset in Functional Component with useEffect and Fetch in React 18
Could someone explain I'm wondering if anyone has experience with Quick question that's been bugging me - I'm working on a personal project and I'm working with an scenario with my functional component in React 18 where the state seems to reset unexpectedly when I make an API call using `fetch` within a `useEffect`....... The goal is to fetch user data from an API and store that in the component's state. However, every time the component re-renders, it fetches the data again, causing a flicker in the UI and resetting the state to its initial value. Here's a simplified version of my component: ```javascript import React, { useEffect, useState } from 'react'; const UserProfile = () => { const [user, setUser] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { const fetchUser = async () => { const response = await fetch('https://api.example.com/user'); const data = await response.json(); setUser(data); setLoading(false); }; fetchUser(); }, []); // empty dependency array to run only on mount if (loading) return <div>Loading...</div>; return <div>User: {user.name}</div>; }; export default UserProfile; ``` Everything seems okay at first glance, but when I trigger a state update elsewhere in the app that causes a re-render of this component, it resets the state back to `null` for the `user`. I tried adding additional checks in my `useEffect` to prevent fetching when the user state is already populated, but that didn't resolve the scenario. I also checked that there are no parent components causing the `UserProfile` to unmount and remount, yet the question continues. I would appreciate any insights into why this behavior is happening and how I might resolve it. Are there any best practices for handling state in a scenario where a component relies on asynchronous data that might change frequently? This is part of a larger application I'm building. Thanks in advance! My development environment is Linux. Any ideas what could be causing this? Any suggestions would be helpful. Cheers for any assistance! This issue appeared after updating to Javascript LTS. Hoping someone can shed some light on this.