问题 I have some experience with React but I'm new to React Native. I've played around for a while, but I got stuck when I tried to write a basic native module for iOS. I've tried with both Swift and Objective C. (I have some basic experience with Swift, but Objective C is completely new for me) Some context: The project is created with react-native-cli 2.0.1 I use XCode 9.1 Here is the .swift class import Foundation @objc(Something) class Something: NSObject { @objc func printSomething() -> Void