expo-moduleslisted

# expo-modules A guide to writing native modules in Swift (iOS) and Kotlin (Android) with the Expo Modules API. Function/view/event module structure, async definitions, autolinking, and TypeScript-binding discipline. ## What It Does - Creating a new module with `create-expo-module` - Swift `Module` and Kotlin `Module` class structure - `Function`, `AsyncFunction`, `Property`, `Events`, `View` definitions - TypeScript bindings and `requireNativeModule` usage - Local module (inside the project) vs publishable package - Event emitter pattern ## Creating a New Module ```bash # New package (publishable to npm) npx create-expo-module my-native-module cd my-native-module npm run build npm run open:ios # open in Xcode npm run open:android # open in Android Studio # Local module (this project only) npx create-expo-module@latest --local my-feature # Creates it under modules/my-feature/ ``` ## Directory Structure ``` my-native-module/ android/ src/main/java/expo/modules/mynativemodule/ MyNativeModuleModule.kt ios/ MyNativeModuleModule.swift src/ index.ts # TypeScript binding MyNativeModule.types.ts MyNativeModuleModule.ts MyNativeModuleView.tsx expo-module.config.json package.json ``` ## iOS — Swift Module ```swift // ios/MyNativeModuleModule.swift import ExpoModulesCore public class MyNativeModuleModule: Module { public func definition() -> ModuleDefinition { Name("MyNativeModule") Constants([ "PI"