React useEffect not re-triggering after state update when dependencies include a complex object
I've been researching this but I've been banging my head against this for hours. I've encountered a strange issue with I have a React component where I'm trying to fetch data from an API and update the state with the response... I’m using the `useEffect` hook, but I’ve noticed that when I update the state with a complex object (like an array of objects), the effect doesn’t re-trigger as expected. Here’s what my code looks like: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState([]); const [filter, setFilter] = useState({ status: 'active' }); useEffect(() => { const fetchData = async () => { const response = await fetch('https://api.example.com/data'); const result = await response.json(); setData(result); }; fetchData(); }, []); // Empty dependency array, runs once useEffect(() => { console.log('Filter state changed:', filter); }, [filter]); // This works fine const updateFilter = () => { setFilter({ status: 'inactive' }); // Changing filter state }; return ( <div> <button onClick={updateFilter}>Update Filter</button> <ul> {data.map(item => ( <li key={item.id}>{item.name}</li> ))} </ul> </div> ); }; export default MyComponent; ``` The issue arises because when I log the `data` right after setting it, I see that it has changed, but the `useEffect` that fetches data never re-runs when I change the filter. I understand that the dependency array only triggers the effect if the values within change. Is there a way to make React recognize changes within the array items in `data` and re-trigger the effect conditionally based on the `filter`? I’ve tried using JSON.stringify in the dependency array, but that seems to create unnecessary re-renders and performance issues. Additionally, I’m using React 17.0.2. Any insights on how to handle this situation effectively would be greatly appreciated! Am I missing something obvious? For context: I'm using Javascript on Windows. I'm working with Javascript in a Docker container on macOS. This issue appeared after updating to Javascript stable. Am I approaching this the right way?