js升级完，ios build项目的时候会出现上图的错误。参考这个官方的 链接 ，
在React 数组里 添加 CxxBridge 组件，再pod install ，出现Folly XXXX的错。此时再参考这个链接，需要添加react-native这些podspec，然后再pod就ok！
#Third party deps
pod'DoubleConversion',:podspec=> react_native_path+'/third-party-podspecs/DoubleConversion.podspec'
pod'GLog',:podspec=> react_native_path+'/third-party-podspecs/GLog.podspec'
pod'Folly',:podspec=> react_native_path+'/third-party-podspecs/Folly.podspec'
