mpvue 引入第三方库（vant）时，报错，如下

错误信息 VM1749:1 thirdScriptError sdk uncaught third Error Cannot read property 'defaultView' of undefined TypeError: Cannot read property 'defaultView' of undefined at Object.global.webpackJsonp.module.exports

main.js
![mpvue.png](//static.cnodejs.org/FsD81bbrI4LgJ6b5tAajq-iPkzik)