I have just started using Vue3, and am trying to use vuex to manage state. when using Vue2 I would call the store each time the app loads like this:

// mains.js
import VueRouter from "vue-router";
import Vuex from "vuex";
import router from "./routes";

window.Vue = require('vue').default;
Vue.use(VueRouter);
Vue.use(VueMoment);
Vue.use(Vuex);

const store = new Vuex.Store(storeDefinition);

const app = new Vue({
    el: '#app',
    router,
    store,
    components: {
        "index": Index
    },
    async created() {
        this.$store.dispatch("loadStoredState");
        this.$store.dispatch("loadUser");
    },
});

This is my vuex store that defines state, mutations and actions for vuex:

// store.js
import { isLoggedIn, logOut } from "./shared/utils/auth";

export default {
    state: {
        isLoggedIn: false,
        user: {}
    },
    mutations: {
        setUser(state, payload) {
            state.user = payload;
        },
        setLoggedIn(state, payload) {
            state.isLoggedIn = payload;
        }
    },
    actions: {
        loadStoredState(context) {
            context.commit("setLoggedIn", isLoggedIn());
        },
        async loadUser({ commit, dispatch }) {
            if (isLoggedIn()) {
                try {
                    const user = (await axios.get("/user")).data;
                    commit("setUser", user);
                    commit("setLoggedIn", true);
                } catch (error) {
                    dispatch("logout");
                }
            }
        },
        logout({ commit }) {
            commit("setUser", {});
            commit("setLoggedIn", false);
            logOut();
        }
    },
    getters: {}
}

This file manages a cookie for local storage that stores a boolean value for isLoggedIn:

// auth.js
export function isLoggedIn() {
    return localStorage.getItem("isLoggedIn") == 'true';
}

export function logIn() {
    localStorage.setItem("isLoggedIn", true);
}

export function logOut() {
    localStorage.setItem("isLoggedIn", false);
}

But in Vue3 I am creating the main.js file like this:

// mains.js
const { createApp } = require('vue')
import Index from './Index.vue'
import createRouter from './router'
import { createStore } from 'vuex'
import storeDefinition from "./store";

const store = createStore(storeDefinition)

createApp(Index)
    .use(createRouter())
    .use(store)
    .mount('#app')

How can I add the two calls to manage the store to the createApp function?

CodePudding user response：

You can add the created hook to the root component by using the extends option with the component definition:

// main.js
import { createApp } from 'vue'
import Index from './Index.vue'
import createRouter from './router'
import { createStore } from 'vuex'
import storeDefinition from './store'

const store = createStore(storeDefinition)

createApp({
    extends: Index,
    created() {
      this.$store.dispatch('loadStoredState')
      this.$store.dispatch('loadUser')
    },
  })
  .use(createRouter())
  .use(store)
  .mount('#app')

demo