Xcode - leotm/react-native-template-typescript Wiki
This is the complete Xcode developer toolset for Apple Watch, Apple TV, iPhone, iPad, and Mac. It includes the Xcode IDE, iOS Simulator, and all required tools and frameworks for building iOS, watchOS, tvOS, and macOS apps.
CL Tools for Xcode
The Command Line Tools enable UNIX-style development via Terminal by installing command line developer tools, as well as macOS SDK frameworks and headers. Many useful tools are included, such as the Apple LLVM compiler, linker, and Make. If you use Xcode, these tools are also embedded within the Xcode IDE.