Yea, you can set those variables like this, in your entrypoint file (main.js):

Vue.store= Vue.prototype.store = 'THIS IS STORE VARIABLE';

and later access it in your vue instance like this:

<script>export default {  name: 'HelloWorld',  methods: {    yourMethod() {        this.store // can be accessible here.    }  }}</script>

You can also see this in the vue-docs here.

Edit 1:

from the discussions in the comment sections about "no entrypoint file" in quasar's template.

what you can do is, to go to src/router/index.js, and there you will be able to get access to Vue, through which you can set a global variable like this:

...import routes from './routes'Vue.prototype.a = '123';Vue.use(VueRouter)...

and then if you console.log it in App.vue, something like this:

<script>export default {  name: 'App',  mounted() {        console.log(this.a);  }}</script>

now, look at your console:

You can also do the same in App.vue file in the script tag.

We could add the Instance Properties

Like this, we can define instance properties.

Vue.prototype.$appName = 'My App'

Now $appName is available on all Vue instances, even before creation.

If we run:

new Vue({  beforeCreate: function() {    console.log(this.$appName)  }}) 

Then "My App" will be logged to the console!

You don't need to make the store a global variable like that, as every component (this.$store) and the Vue instance itself have access to the store after the initial declaration.

Take a look at the Quasar docs for App Vuex Store.

store.js

import Vue from 'vue'import Vuex from 'vuex'Vue.use(Vuex)const store = new Vuex.Store({  state: {    count: 0  },  mutations: {    updateCount(state) {      state.count += 1    }  }})

main.js

import App from './App.vue'import store from '/path/to/store.js'new Vue({  el: '#app',  store,  render: h => h(App)})

If you need to access the store from within a component you can either import it (as we did in main.js) and use it directly [note that this is a bad practice] or access using this.$store. You can read a bit more about that here.

In any case here's the official Getting Started guide from Vuex team