parsley/app/javascript/store/index.js

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

Vue.use(Vuex);

export default new Vuex.Store({
  strict: process.env.NODE_ENV !== 'production',
  state: {

  },
  getters: {

  },
  mutations: {

  },
  actions: {

  }
});