Handling Memory Leaks in React with useEffect not cleaning up properly
I'm experiencing a memory leak in my React application, particularly when using the `useEffect` hook for setting up a WebSocket connection. The connection is established correctly, but when the component unmounts, it seems like the cleanup function isn't freeing up the resources as expected. Here's a simplified version of my code: ```javascript import React, { useEffect, useState } from 'react'; const ChatComponent = () => { const [messages, setMessages] = useState([]); useEffect(() => { const socket = new WebSocket('ws://example.com/chat'); socket.onmessage = (event) => { const newMessage = JSON.parse(event.data); setMessages((prevMessages) => [...prevMessages, newMessage]); }; // Cleanup function to close the socket return () => { socket.close(); }; }, []); return ( <div> {messages.map((msg, index) => ( <div key={index}>{msg.content}</div> ))} </div> ); }; export default ChatComponent; ``` Despite having the cleanup function that closes the socket connection, I noticed that the browser's performance tab indicates that memory usage continues to grow every time the component is mounted and unmounted. I've tried using `console.log` statements to confirm that the cleanup function is being called, and it is. I also verified that no other references to the socket are lingering. I've even experimented with adding a timeout before closing the socket, but nothing seems to help. Is there anything I might be missing or any other way to ensure that resources are correctly released? I'm using React version 18.0.0 and testing this in Chrome. Any insights would be greatly appreciated! I'm working on a service that needs to handle this. How would you solve this?