fastlane: Build, test, and ship React Native apps

React Native, a widely used JavaScript framework for mobile app development, allows for the creation of cross-platform apps for both iOS and Android, streamlining the development process. The text explores how to automate the build, test, and distribution processes for React Native apps using GitHub Actions and fastlane. Fastlane, a tool that automates time-consuming tasks in app deployment, helps manage app store submissions, beta deployments, and more, but is primarily supported on macOS due to its reliance on Xcode. The article demonstrates setting up fastlane for both Android and iOS, detailing processes such as creating distribution lanes, managing version numbers, and setting up code signing. GitHub Actions is then used to automate workflows for both platforms, with separate configurations for iOS and Android, leveraging encrypted secrets to manage sensitive data. The integration of these tools aims to enhance the efficiency and reliability of the app development pipeline, ensuring seamless, continuous deployment for both platforms.