今一个react 中使用mobx 老是提示Cannot read property 'type' of undefined Occurred while linting **\index.jsx:1

头疼起初是认为是 @observable的问题，于是修改了整个js

将：

export default class AppState {
      @observable count = 1
      @observable name = 'jack'
      @computed get msg() {
        return `${this.name} say count is ${this.count}`
      }
      @action add() {
        this.count += 1
      }
  }

改成了：

const AppState = observable({
  // observable 属性:
  name: 'John',
  count: 42,
  showAge: false,

  // @computed 计算属性:
  get msg() {
    return `${this.name} say count is ${this.count}`;
  },

  // @action 动作:
  add() {
    this.count += 1;
  },
})

然而重新运行只是少了一些错误罢了，问题依然未解决

最后在 “Cannot read property ‘type’ of undefined” after upgrading to 4.14.0 #9767
找到了一个解决方法

将"babel-eslint": "^7.2.3",升级为"babel-eslint": "^8.1.1", 这下终于没提示了