window.performance.timing.navigationStart有bug

[303182519]

Version

1.12.36

Reproduction link

https://aq.huya.com/m/third_bind/third_bind.html

Steps to reproduce

发现你们的库里面用到window.performance.timing.navigationStart这个方法，在sentry的监控下，发现在IOS报null is not an object (evaluating 'window.performance.timing.navigationStart')

What is expected?

未知

What is actually happening?

未知

Dependencies Version

vue: 2.6.11 better-scroll: 1.15.0

[dolymood]

这个貌似是 bs 的bug 目前来看的话 只能先 hack 处理掉 As https://github.com/ustbhuangyi/better-scroll/issues/841

if (!performance.timing) {
  performance.timing = {}
  Object.defineProperty(performance.timing, 'navigationStart', {
    get: function () {
      return Date.now() - performance.now()
    }
  })
}