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  | import App from './app2.vue'; import Vue from 'vue'; import Vuex from 'vuex'; Vue.use(Vuex); let userOptions = {     state: {          users: [{ name: 'jack', age: 18 }, { name: 'rose', age: 17 }]     },     mutations: {          add(state, data) {             state.users.push(data);         },         edit(state, data) {             state.users[data.index].name = data.name;         },         del(state, index) {             state.users.splice(index, 1);         }     },     actions: {          addUser({ commit }, user) {                          commit('add', user)         },         editUser({ commit }, user) {             commit('edit', user);         },         delUser({ commit }, index) {             commit('del', index);         }     },     getters: {          users(state) {             return state.users;         }     } } let store = new Vuex.Store({     modules: {                  userOptions,     } }); new Vue({     el: '#app',     store,     render: c => c(App) }) 
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