State not updating in nested components after MobX action in Next.js application
I'm facing an issue where the state managed by MobX is not updating correctly in my nested components after performing an action. I'm using MobX v6.0.0 and Next.js v11.0.0. I have a store that manages a list of items and a function to add a new item to this list. After calling this function, the new item appears in the store when I log it, but my components that consume this state aren't re-rendering as expected. Here’s a simplified version of my store: ```javascript import { makeAutoObservable } from 'mobx'; class ItemStore { items = []; constructor() { makeAutoObservable(this); } addItem(item) { this.items.push(item); } } const itemStore = new ItemStore(); export default itemStore; ``` And in my component, I’m observing the items like this: ```javascript import React from 'react'; import { observer } from 'mobx-react-lite'; import itemStore from '../stores/itemStore'; const ItemList = observer(() => { return ( <ul> {itemStore.items.map((item, index) => ( <li key={index}>{item}</li> ))} </ul> ); }); export default ItemList; ``` When I add an item using the following button click handler: ```javascript const handleAddItem = () => { itemStore.addItem('New Item'); }; ``` The item is added to `itemStore.items`, but the `ItemList` component doesn't re-render to show the new item. I’ve tried wrapping the component in `observer` and ensuring that the MobX store is properly set up, but I’m still not seeing the expected updates. Any insights into why the reactivity isn't working as anticipated? Am I missing something with how MobX works in the context of Next.js, or is there a specific pattern I should follow for reactivity in nested components? I'm developing on Ubuntu 22.04 with Javascript. Has anyone else encountered this?