Nativescript不识别Xcode（高塞拉利昂）

我在使用Xcode版本9.0.1（9A1004）的High Sierra上。当运行tns doctor我得到以下警告：Nativescript不识别Xcode（高塞拉利昂）

WARNING: Xcode is not installed or is not configured properly. 
You will not be able to build your projects for iOS or run them in the iOS Simulator. 
To be able to build for iOS and run apps in the native emulator, verify that you have installed Xcode.

如果我运行安装脚本，而且我得到：

xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance 
Xcode is not installed or not configured properly. Download, install, set it up and run this script again.

正如你可能已经猜到了，我已经从App Store安装Xcode和我还安装了cocoapods和xcodeproj。这是我得到的唯一警告。

有什么建议吗？

来源

2017-10-21 Philip Feldmann