我的tim.js代码

import { action, observable } from 'mobx-miniprogram'
import Tim from "../model/tim";
import TIM from "tim-wx-sdk-ws"

export const timStore=observable({
    //字段
    sdkReady:false,

    //actions
    login:action(function (){
        this._runListener()    
        Tim.getInstance().login()  
    }),

    _runListener(){
        const sdk=Tim.getInstance().getSDK()  
        sdk.on(TIM.EVENT.SDK_READY,this._handleSDKReady,this) 
        sdk.on(TIM.EVENT.SDK_NOT_READY,this._handleSDKNotReady,this)  
        sdk.on(TIM.EVENT.KICKED_OUT,this._handleSDKNotReady,this)
    },

    _handleSDKReady(){
        this.sdkReady=true
    },

    _handleSDKNotReady(){
        this.sdkReady=false
    },
})

我的conversation部分代码

import Tim from "../../model/tim";
import TIM from "tim-wx-sdk-ws";
import { timStore } from "../../store/tim";
import { createStoreBindings } from "mobx-miniprogram-bindings";

Page({
  /**
   * 页面的初始数据
   */
  data: {},

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.storeBindings = createStoreBindings(this, {
      store: timStore,
      fields: ["sdkReady"], //1.需要绑定的字段 2.这个sdkReady会绑定到data{}里去
      action: ["login"], //需要绑定的操作和方法
    });
    this.login()
  },
  
});

现在this.login部分一直编译通不过，如果注释掉这一段就没有问题，说明问题应该是出在this.login，请老师协助，感谢