Handling State Updates in React with useEffect and Nested State Arrays
I'm running into an scenario where my state updates are not reflecting properly when using `useEffect` with a nested state array in my React component. I'm trying to fetch data and then update the state based on the fetched data, but it seems like the component doesn’t re-render as expected or the state doesn't update correctly. Here’s a simplified version of my code: ```javascript import React, { useState, useEffect } from 'react'; const MyComponent = () => { const [items, setItems] = useState([]); useEffect(() => { const fetchItems = async () => { const response = await fetch('https://myapi.com/items'); const data = await response.json(); setItems(data); }; fetchItems(); }, []); const addItem = (newItem) => { setItems(prevItems => [...prevItems, newItem]); }; return ( <div> <button onClick={() => addItem({ id: items.length + 1, name: 'New Item' })}>Add Item</button> <ul> {items.map(item => ( <li key={item.id}>{item.name}</li> ))} </ul> </div> ); }; export default MyComponent; ``` After I successfully fetch the items, the `items` state updates, but when I try to add a new item using the `addItem` function, the list doesn't update on the UI. I’ve checked the console, and there are no errors. It seems like the state is being updated, but the component isn’t re-rendering properly. I’ve tried various approaches, such as using `setItems(prev => [...prev, newItem])`, but none seem to resolve the scenario. The React version I’m using is 17.0.2. Any insights would be greatly appreciated! This is part of a larger API I'm building. What's the best practice here?