Guide to effectively configuring Vuex in a Vue.js project?

I am currently in the process of developing a Vuejs application and I have encountered an issue with adding Vuex store.

Here is the code snippet that is causing trouble:

import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

const store = new Vuex.Store({
  state: {
    userData: "USER!"
  },
  mutations: {

  },
  actions: {

  },
  getters: {

  }
})

export default store

An error message keeps popping up:

Uncaught SyntaxError: The requested module '/node_modules/.vite/vue.js?v=52de2cee' does not provide an export named 'default'

main.js

import { createApp } from 'vue'
import App from './App.vue'
import router from '@/router'
const app = createApp(App)
import Vuex from 'vuex'
import { store } from '@/store/users'

app.use(router)
app.use(Vuex)

app.mount('#app')

I need help to identify what went wrong. Thank you for your assistance.

Answer №1

The code snippet provided is tailored for Vue 2 and is incompatible with Vue 3. Vue 3 necessitates Vuex 4 for functionality.

To integrate Vuex 4 into a Vue 3 application:

  1. Begin by installing Vuex 4:

    npm i -S vuex@next
    
  2. Update the store implementation to leverage the Vuex 4 createStore API (thus generating a plugin for app.use() in the following step):

    // @/store.js
    import { createStore } from 'vuex'
    
    export default createStore({
      state: {
        userData: "USER!"
      },
      mutations: {
    
      },
      actions: {
    
      },
      getters: {
    
      }
    })
    
  3. Revise the main script to incorporate the store using app.use():

    import { createApp } from 'vue'
    import store from '@/store'
    
    const app = createApp(App)
    app.use(store)
    

View demo

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