Preventing Memory Leaks in React with useEffect and Event Listeners
I'm working on a React application and I've noticed that my component is causing memory leaks due to event listeners not being removed properly. I'm using `useEffect` to add an event listener to the window object when the component mounts, but I'm not sure how to clean it up correctly. Here's what I have so far: ```javascript import React, { useEffect } from 'react'; const MyComponent = () => { useEffect(() => { const handleResize = () => { console.log('Window resized!'); }; window.addEventListener('resize', handleResize); return () => { window.removeEventListener('resize', handleResize); }; }, []); return <div>Resize the window and check the console!</div>; }; export default MyComponent; ``` I expected the event listener to be added when the component mounts and removed when it unmounts, but I'm seeing memory warnings after navigating away from the component. I confirmed the component is unmounted, but the resize handler still seems to be active. I also tried adding a cleanup function directly inside the `useEffect`, but I still encounter the warnings, which suggest that there are references that aren't being cleaned up. Could there be an scenario with how I'm defining or using the `handleResize` function? Any recommendations on debugging or best practices to ensure that event listeners are properly managed to avoid memory leaks?