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Logger

为了发现以及定位线上问题，开发过程中应当记录好日志。

日志等级参考：https://stackoverflow.com/questions/2031163/when-to-use-the-different-log-levels，根据客户端的需要，取其中部分等级：

  • Error，致命的错误，流程无法正常继续走下去
  • Warn，可能的异常
  • Info，一般有用的记录信息，应用启动/结束，页面加载/销毁等生命周期信息
  • Debug，对错误诊断有帮助的信息

场景进一步细分：

  • Error
    • 代码运行错误：JSRuntimeError
    • Http 请求相关错误
      • 客户端断网：OfflineError
      • 请求超时：TimeoutError
      • 200 以外的 HTTP 状态码：HttpStatusError。
  • Warn
    • 表单验证不通过：FormValidateError
    • 接口验证不通过：HttpBizError
  • Info
    • App onLaunch
    • Page onShow、onLoad
    • 用户当前设备信息
  • Debug
    • 用户的操作以及操作结果
    • 与服务端交互的请求参数和请求结果

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