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react-native log-ios 不适用于xcode 9.1

我收到此错误:

Scanning folders for symlinks in /Users/Tom/App/node_modules (18ms)
NOTE:  Most system logs have moved to a new logging system.  See log(1) for more information.
Nov  8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.imfoundation.IMRemoteURLConnectionAgent) <Warning>: Unknown key for Boolean: EnableTransactions
Nov  8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.imfoundation.IMRemoteURLConnectionAgent) <Warning>: Unknown key for integer: _DirtyJetsamMemoryLimit
Nov  8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.imfoundation.IMRemoteURLConnectionAgent) <Warning>: Unknown key for Boolean: EnablePressuredExit
Nov  8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.AssetCacheLocatorService) <Warning>: Unknown key for Boolean: EnableTransactions
Nov  8 08:30:06 MacBook-Pro …

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我react-native start在一个终端运行,然后react-native ios-run在另一个终端运行.我最初console.log很少表现,有时他们会这样做.

很多次,随机我看到:

日志消息语录超出 - 此过程中的一些消息已被丢弃

我console.log被丢弃了吗？我试着清理控制台以便更清楚地看到它,但我也找不到清除控制台的方法.

在Android上,我不会有丢失的问题console.log.