Agent skill · software engineering · sickn33
expo-ui-swift-ui
Build iOS-native Expo SDK 55 UI with SwiftUI views/modifiers, Host/RNHostView embedding and native rebuild prerequisites.
Why this skill is useful
Provides specific integration patterns and usage examples for the `@expo/ui/swift-ui` package that the AI wouldn't reliably generate on its own.
What it needs
Requires @expo/ui installed locally. About 1k tokens when loaded. Last updated 2026-08-07. 44,571 stars on the source repository.
What this skill does
The instructions in this skill apply to SDK 55 only. For other SDK versions, refer to the Expo UI SwiftUI docs for that version for the most accurate information. When to Use You need to build iOS-native UI in Expo using @expo/ui/swift-ui. The task involves selecting SwiftUI views or modifiers, wrapping trees in Host, or embedding React Native components with RNHostView. You are targeting Expo SDK 55 behavior for SwiftUI integration and extension guidance. Installation A native rebuild is required after installation (npx expo run:ios). Instructions Expo UI's API mirrors SwiftUI's API. Use SwiftUI knowledge to decide which components or modifiers to use. Components are imported from @expo/ui/swift-ui, modifiers from @expo/ui/swift-ui/modifiers. When about to use a component, fetch its docs to confirm the API - https://docs.expo.dev/versions/v55.0.0/sdk/ui/swift-ui/{component-name}/index.md When unsure about a modifier's API, refer to the docs - https://docs.expo.dev/versions/v55.0.0/sdk/ui/swift-ui/modifiers/index.md Every SwiftUI tree must be wrapped in Host. RNHostView is specifically for embedding RN components inside a SwiftUI tree. Example: If a required modifier or View is missing in Expo UI, it can be extended via a local Expo module. See: https://docs.expo.dev/guides/expo-ui-swift-ui/extending/index.md. Confirm with the user before extending. Limitations APIs target SDK 55; check that version’s actual Expo docs and installed package before editing. Android/iOS examples are platform-specific, not interchangeable or proof of real-device behavior. Existing framework and user requirements take precedence. Native rebuilds install/execute dependencies and change the project; review the intended development target first. icon.xml and app code are application assets, not bundled files. Do not treat the output as a substitute for environment-specific validation, testing, or expert review. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sickn33/expo-ui-swift-ui