Writing Expo Modules Complete reference for building native modules and views using the Expo Modules API. Covers Swift (iOS), Kotlin (Android), and TypeScript. When to Use - Creating a new Expo native module or native view - Adding native functionality (camera, sensors, system APIs) to an Expo app - Wrapping platform SDKs for React Native consumption - Building config plugins that modify native project files References Consult these resources as needed: Quick Start Create a Local Module (in existing app) Always scaffold with first , then modify the generated code. This ensures correct podspec…