Best AI Workflow for React Native Expo Apps

Fazm Team··2 min read

Best AI Workflow for React Native Expo Apps

Building React Native Expo apps with AI agents is powerful but full of traps. The agent generates code that looks correct, passes linting, and then crashes on the device because it assumed a web API exists in React Native. Here is how to set up your project so the agent actually helps.

Start with CLAUDE.md

Your CLAUDE.md file is the single most important file for AI-assisted React Native development. Include these essentials:

  • Platform constraints: List APIs that do not exist in React Native (e.g., window.localStorage, DOM manipulation, CSS Grid)
  • Navigation structure: Describe your navigation stack so the agent creates screens that fit your routing
  • Testing commands: npx expo start, eas build --profile development, and how to run on simulator vs device
  • Common patterns: Your state management approach, how you handle auth, your API client setup

The Pitfalls

AI agents consistently make three mistakes with Expo projects:

Web assumptions. The agent imports react-router-dom instead of expo-router. It uses window.innerWidth instead of Dimensions.get('window'). Your CLAUDE.md needs to explicitly list these substitutions.

Native module confusion. The agent installs packages that require native linking in a managed Expo project. Specify which packages are compatible with Expo Go vs development builds.

Style differences. Flexbox defaults differ between web and React Native. The agent writes display: 'block' which does not exist. Include a note about React Native's flexbox behavior.

The Workflow That Works

  1. Define your screen in plain language
  2. Let the agent generate the component
  3. Run npx expo start immediately - do not batch multiple screens
  4. Fix errors with the agent while the context is fresh
  5. Move to the next screen

Short feedback loops prevent the agent from drifting into patterns that do not work on mobile.

Fazm is an open source macOS AI agent. Open source on GitHub.

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