React useEffect Hook Not Triggering on State Update with Object Dependencies
I'm refactoring my project and I've encountered a strange issue with I'm working on a React application where I'm trying to use the `useEffect` hook to respond to changes in an object stored in state..... However, I'm running into an issue where the `useEffect` is not being triggered when I update a property of the object. Here's a simplified version of my code: ```javascript import React, { useState, useEffect } from 'react'; const MyComponent = () => { const [user, setUser] = useState({ name: 'John', age: 30 }); useEffect(() => { console.log('User updated:', user); }, [user]); const updateUser = () => { setUser({ ...user, age: user.age + 1 }); }; return ( <div> <p>Name: {user.name}</p> <p>Age: {user.age}</p> <button onClick={updateUser}>Increase Age</button> </div> ); }; export default MyComponent; ``` In my console, I expect to see 'User updated:' every time I click the button to increase the age, but it seems that `useEffect` only runs on the initial render and not on subsequent updates when `setUser` is called with the new age. I've verified that the `updateUser` function is being called correctly because I can see the updated age in the component. However, `useEffect` does not seem to recognize that the object has changed. I even tried logging the user object directly in the `useEffect`, but it still only logs the initial state. Is there something I'm missing about how React handles object state or the dependencies of `useEffect`? I also checked that I'm using React v17.0.2, and I'm running this in a standard create-react-app setup. Any help would be greatly appreciated! I'm using Javascript LTS in this project. I'm working in a macOS environment. Is there a better approach? I'm working on a service that needs to handle this. I'd love to hear your thoughts on this.