Vue vendor export

index.js

import Vue from "vue"

import App from "components/App.vue"
new Vue(App);

router-index.js

import VueRouter from "vue-router"

import loginComponent from "../components/login.vue"
import signUpComponent from "../components/signup.vue"
import indexComponent from "../components/index.vue"

const router = new VueRouter({
    routes: [
        { path: '/', component: indexComponent },
        { path: '/login', component: loginComponent },
        { path: '/signup', component: signUpComponent }
    ]
})

export default router

vendor.js

import Vue from "vue"

import Vuex from "vuex"
import VueRouter from "vue-router"
import Vuetify from "components/vuetify"

Vue.use(Vuex)
Vue.use(VueRouter)
Vue.use(Vuetify)

export { Vue, Vuex, VueRouter };