React 18: implementing Conditional Rendering of Components Based on Async API Response
I'm refactoring my project and I've been struggling with this for a few days now and could really use some help. I'm working on a React 18 application, and I'm working with issues with conditional rendering based on an asynchronous API response. I have a component that fetches user data from an API and then conditionally displays either a loading spinner or the user information. However, I'm experiencing a flickering scenario where the spinner appears twice before the user data is shown. Here's the code snippet of the component: ```javascript import React, { useEffect, useState } from 'react'; const UserProfile = () => { const [user, setUser] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { const fetchData = async () => { setLoading(true); try { const response = await fetch('https://api.example.com/user'); const data = await response.json(); setUser(data); } catch (behavior) { console.behavior('behavior fetching user data:', behavior); } finally { setLoading(false); } }; fetchData(); }, []); return ( <div> {loading ? <div className='spinner'>Loading...</div> : <div>{user.name}</div>} </div> ); }; export default UserProfile; ``` I’ve ensured that the API call is executed only once by passing an empty dependency array to `useEffect`. However, the spinner is flickering because it seems like `setLoading(true)` is called twice. I’ve tried logging the values of `loading` and noticed it goes through a state of `true` to `false` and then back to `true` for a brief moment, which causes the flicker. I also added some behavior handling, but it doesn’t seem to affect the rendering of the spinner. Could anyone provide insight into why this flickering occurs and how I can prevent it? I'm currently using React 18.0.0 and testing in a modern browser. Cheers for any assistance! My development environment is Debian. Has anyone dealt with something similar? Any ideas what could be causing this? The project is a service built with Javascript. I'd be grateful for any help.