遇到的错误提示

Installing assert-plus@^1.0.0  CXX(target) Release/obj.target/node_sleep/sleep.o
In file included from ../sleep.cc:2:
In file included from ../../_nan@2.7.0@nan/nan.h:48:
In file included from /Users/haohao/.node-gyp/6.11.5/include/node/uv.h:48:
/Users/haohao/.node-gyp/6.11.5/include/node/uv-errno.h:25:10: fatal error: 'errno.h' file not found
#include <errno.h>
         ^~~~~~~~~

解决方法

重新安装CommandLineTools工具

• rm -rf /Library/Developer/CommandLineTools
• xcode-select --install

xcode-select: note: install requested for command line developer tools

点击安装开始下载安装Xcode Command Line Tools

验证下是否安装成功

• xcode-select -p

/Applications/Xcode.app/Contents/Developer

• gcc --version

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 9.0.0 (clang-900.0.38)
Target: x86_64-apple-darwin16.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

这样应该就能解决问题了