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前言：

        最近打算用vue 写个音乐播放器，在搞 vuex 的时候遇到一个很神奇报错；vuex 姿势练了千百次了，刚开始的时候我一直以为是代码问题，反复检查了带了，依旧报错。 Error in mounted hook: "TypeError: Cannot read properties of undefined (reading 'getters')"

 

 除了 mapGetters 中的 方法 都能把数据都正确，连 mapMutations 中的方法都是对的。

按理说 mapMutations 可以，mapGetters 也应该可以才对！

<script>
import { mapGetters, mapMutations } from "vuex";
export default {data() {return {};},computed: {...mapGetters({userInfo: "userInfo",}),userInfo1() {return this.$stroe.state.userInfo;},},mounted() {console.log("this.$stroe:", this.$stroe);console.log("this.$stroe.mapGetters:", this.$stroe.mapGetters);console.log("this.$stroe.getters:", this.$stroe.getters);console.log("this.$stroe.state.userInfo:", this.$stroe.state.userInfo);console.log("this.userInfo1:", this.userInfo1);console.log("this.saveToken:", this.saveToken);console.log("this.userInfo:", this.userInfo);},methods: {...mapMutations({saveToken: "saveToken",}),},
};
</script>输出
store: {…}
this.$stroe: Store {_committing: false, _actions: {…}, _actionSubscribers: Array(0), _mutations: {…}, _wrappedGetters: {…}, …}commit: ƒ boundCommit(type, payload, options)dispatch: ƒ boundDispatch(type, payload)getters: {}strict: false_actionSubscribers: []_actions: {loadStorage: Array(1), cleanStorage: Array(1)}_committing: false_devtools: undefined_makeLocalGettersCache: {}_modules: ModuleCollection {root: Module}_modulesNamespaceMap: {}_mutations: {saveToken: Array(1), updateToken: Array(1), saveUserinfo: Array(1), updateUserInfo: Array(1)}_scope: EffectScope {detached: true, active: true, effects: Array(2), cleanups: Array(0), parent: undefined}_state: {__ob__: Observer}_subscribers: []_wrappedGetters: {userInfo: ƒ, token: ƒ}state: （…）[[Prototype]]: Objectthis.$stroe.mapGetters: undefined
this.$stroe.getters: {}
this.$stroe.state.userInfo: {…}
this.userInfo1: {…}
this.saveToken: ƒ mappedMutation() {var args = [],len = arguments.length;while (len--) args[len] = arguments[len];// Get the commit method from storevar commit = this.$store.commi…

       

解决：

        各种姿势都试了，这次不知道啥情况。代码也检查了；项目重启了， 电脑也重启了。 磨了很长时间 最后试了下 换了个 vuex 版本就然可以了 ！ 最后才发现 原来是 引用的 vuex 4.1.0, 版本回退到 3.6.2 就可以了 ，给大家填个坑