刚开始上手RN，碰到很多坑，记录一下。碰到问题多去看看github上面的issue！
启动命令react-native run-ios报错 1、：xcrun: error: unable to find utility "instruments", not a developer tool or in PATH
解决方案
代码语言：javascript复制sudo xcode-select -s /Applications/Xcode.app/Contents/Developer/重新跑一下就好了
2、bundling failed: Error: Unable to resolve module './../react-transform-hmr/lib/index.js'
解决方案
代码语言：javascript复制react-native start --reset-cache3、Cannot read property 'bindings' of null
代码语言：javascript复制node_modules/react-native/Libraries/react-native/react-native-implementation.js: Cannot read property 'bindings' of null (null))这个大致是babel包的版本问题，解决方案
代码语言：javascript复制npm install babel-preset-react-native@5 --save持续踩坑，持续更新
