Vuex Store : src/store/index.js

index.js

import Vue from "vue"; // The Vue library
import Vuex from "vuex"; // The Vuex library

import heroes from "./modules/heroes"; // heroes module
import villains from "./modules/villains"; // villains is another module

Vue.use(Vuex); // using Vuex

export default new Vuex.Store({
  modules: {
    heroes, // can also be written like heroes:heroes
    villains, // can also be written like villains:villains
  }
});