// store.js

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

Vue.use(Vuex);

const state = {
  test: [1, 2, 3],
}

export default new Vuex.Store({
  state
})

// main.js

import Vue from 'vue'
import App from './App'
import router from './router'
import store from './vuex/store'

import BootstrapVue from 'bootstrap-vue'
Vue.use(BootstrapVue)
Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  store,
  template: '<App/>',
  components: { App}
})

//App.vue

<template>
  <div id="app">
    <router-view/>
  </div>
</template>

<style lang="scss">
  @import "./assets/css/main.scss";
</style>

<script>
  import 'bootstrap/dist/css/bootstrap.css'
  import 'bootstrap-vue/dist/bootstrap-vue.css'
export default {
  vuex: {
    getters: {
      test: state => state.test
    }
  },
  name: 'app',
  created() {
    console.log(this.test)
  }
}
</script>