bundles/frontend/skills/expo-architect/SKILL.md
Scaffold a production-ready Expo React Native app with working screens, navigation, and optional Clerk auth. Generates complete mobile app structure that runs immediately with `bun start`. Use when scaffolding a new Expo or React Native app, setting up Expo Router navigation, or adding Clerk auth to a mobile app.
npx skillsauth add shipshitdev/library expo-architectInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Create Expo React Native apps with:
Generates working mobile apps, not empty scaffolds:
bun start# Create app with PRD-style prompt
python3 scripts/init-expo.py \
--root ~/www/myapp \
--name "My App" \
--brief "A fitness tracker where users can log workouts"
# With specific options
python3 scripts/init-expo.py \
--root ~/www/myapp \
--name "My App" \
--tabs "Home,Workouts,Profile" \
--auth
myapp/
├── app/
│ ├── _layout.tsx # Root layout
│ ├── (tabs)/ # Tab navigator
│ │ ├── _layout.tsx
│ │ ├── index.tsx
│ │ └── ...
│ └── (auth)/ # Auth screens (if enabled)
├── components/
│ ├── ui/ # Base UI components
│ ├── [entity]/ # Feature components
│ └── layout/ # Layout components
├── lib/
│ ├── api.ts # API client
│ └── auth.ts # Auth utilities
├── providers/ # Context providers
├── types/ # TypeScript types
├── app.json # Expo config
├── package.json
├── tsconfig.json
└── biome.json
bun start # Start Expo dev server
bun run ios # iOS simulator
bun run android # Android emulator
bun run lint # Check code style
bun run typecheck # Type checking
EXPO_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_...
EXPO_PUBLIC_API_URL=http://localhost:3001
For detailed patterns, code templates, and complete examples: references/full-guide.md
development
TypeScript refactoring and modernization guidelines from a principal specialist perspective. This skill should be used when refactoring, reviewing, or modernizing TypeScript code to ensure type safety, compiler performance, and idiomatic patterns. Triggers on tasks involving TypeScript type architecture, narrowing, generics, error handling, or migration to modern TypeScript features.
tools
Resolves TypeScript and JavaScript problems across type-level programming, performance, monorepo management, migration, and modern tooling. Invoke when diagnosing "type instantiation excessively deep" errors, migrating JS to TS, configuring strict tsconfig, debugging module resolution, or choosing between Biome/ESLint/Turborepo/Nx.
tools
Turborepo monorepo build system guidance. Triggers on: `turbo.json`, task pipelines, `dependsOn`, caching, remote cache, the `turbo` CLI, `--filter`, `--affected`, CI optimization, environment variables, internal packages, monorepo structure, and package boundaries. Use when the user configures tasks or workflows, creates packages, sets up a monorepo, shares code between apps, runs changed packages, debugs cache behavior, or works in an `apps/` plus `packages/` workspace.
tools
Provides Tailwind CSS v4 performance optimization and best practices guidelines. Triggers when writing, reviewing, or refactoring Tailwind CSS v4 code; when working with Tailwind configuration, @theme directive, utility classes, responsive design, dark mode, container queries, or CSS generation optimization.