CodexBloom - Programming Q&A Platform

Vue 3: How to manage global state updates when using Composition API with multiple components?

👀 Views: 18 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-17
vue.js vue3 composition-api JavaScript

Does anyone know how to I'm currently working on a Vue 3 application where I'm utilizing the Composition API for state management across multiple components. I've set up a global store using `reactive()` to manage a shared state, but I'm working with issues where components are not reflecting the latest state updates after certain mutations. For instance, I have a global state defined as follows: ```javascript import { reactive } from 'vue'; const state = reactive({ count: 0, items: [] }); export default state; ``` In one of my components, I am incrementing `count` like this: ```javascript import { defineComponent } from 'vue'; import globalState from '../store'; export default defineComponent({ setup() { function increment() { globalState.count++; } return { increment }; } }); ``` And in another component, I'm trying to display the `count` value: ```javascript import { defineComponent, toRefs } from 'vue'; import globalState from '../store'; export default defineComponent({ setup() { const { count } = toRefs(globalState); return { count }; } }); ``` The scenario arises when I increment the `count` in the first component, but the second component does not update to show the new value. I've tried using `toRefs()` to make sure the reactivity works, but it doesn't seem to have any effect. Additionally, I checked that both components are properly rendering on the same page and that the store is being imported correctly. I also tried utilizing `watch()` to see if changes were detected, and while I am seeing the side effects when performing the increment, the state in my second component remains stale. I'm not getting any behavior messages, which makes troubleshooting a bit tricky. Any insights on what might be going wrong or best practices for managing global state in a Vue 3 application using the Composition API would be greatly appreciated! This is happening in both development and production on Debian.