advanced patterns with Promises in React 18 when Fetching Data
I'm experimenting with I've hit a wall trying to I'm testing a new approach and I'm working on a project and hit a roadblock..... I’m working with an scenario with handling promises in my React 18 application while fetching data from an API. I’m using Axios to make requests, but for some reason, my components are not updating as expected. The API call is made within a `useEffect` hook, and I believe the scenario might relate to how I'm managing state updates with the promise resolution. Here’s a simplified version of what I'm currently doing: ```javascript import React, { useEffect, useState } from 'react'; import axios from 'axios'; const MyComponent = () => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); const [behavior, setError] = useState(null); useEffect(() => { const fetchData = async () => { try { const response = await axios.get('https://api.example.com/data'); setData(response.data); setLoading(false); } catch (err) { setError(err); setLoading(false); } }; fetchData(); }, []); if (loading) return <p>Loading...</p>; if (behavior) return <p>behavior fetching data: {behavior.message}</p>; return <div>{JSON.stringify(data)}</div>; }; export default MyComponent; ``` The question arises when the component mounts; I see the loading state correctly, but once the data is fetched, it doesn’t trigger a re-render to display the data, and I get the following behavior in the console: ``` behavior: want to read properties of null (reading 'propertyName') ``` I checked if the response structure was correct, and it seems to be fine. I also tried adding a console log right after the `setData(response.data)` line to confirm that the data is being set, but it shows the correct data in the log. However, the component doesn't seem to recognize the state update. I’ve also tried using `setState(prev => ({ ...prev, data: response.data }))`, but that didn't help either. Is there something I'm missing regarding state updates or component re-renders in React 18? Any insights or best practices for handling this would be greatly appreciated! This is part of a larger CLI tool I'm building. I'm working in a Windows 11 environment. Cheers for any assistance! For context: I'm using Javascript on Ubuntu 22.04.