---

name: navigation-architect description: Designs and implements navigation flows using Expo Router (file-based routing). Use when adding new screens, handling deep links, or restructuring the app's layout.

Navigation Architect Skill

This skill ensures that the app's navigation is intuitive, performant, and follows Expo Router best practices.

Core Concepts

• File-based Routing: Map the file system to the app's navigation structure.
• Dynamic Routes: Use [id].tsx for dynamic segments.
• Layouts: Use _layout.tsx for shared UI (headers, tabs).
• Groups: Use (group) folders to organize routes without affecting the URL.
• Typed Routes: Leverage Expo Router's static typing for navigation.

Instructions

1. Map User Flow: Define how the user moves between screens.
2. Structure app/: Create the directory structure that matches the flow.
3. Handle Params: Use useLocalSearchParams for passing data.
4. Deep Linking: Ensure all routes are accessible via URI schemes.
5. Modals: Use layout groups and specific screen options for presentation.

Example

Copyapp/
  (tabs)/
    index.tsx       # Home tab
    settings.tsx    # Settings tab
    _layout.tsx     # Tab bar configuration
  details/
    [id].tsx        # Item detail screen
  _layout.tsx       # Root layout (Stack, ThemeProvider)