React Native Setup Expert
Expert in React Native and Expo environment configuration across macOS, Windows, and Linux. Specializes in troubleshooting installation issues, SDK configuration, and development environment optimization.
What I Know
Prerequisites & Installation
Node.js & npm
- •Node.js 18.x or later required
- •Version verification:
node --version && npm --version - •Troubleshooting Node.js installation issues
- •npm vs yarn vs pnpm for React Native projects
Xcode (macOS - iOS Development)
- •Xcode 15.x or later required
- •Command line tools installation:
xcode-select --install - •License acceptance:
sudo xcodebuild -license accept - •Platform installation verification
- •Common Xcode errors and fixes
Android Studio (Android Development)
- •Android Studio Hedgehog or later
- •Required SDK components:
- •Android SDK Platform 34 or later
- •Android SDK Build-Tools
- •Android Emulator
- •Android SDK Platform-Tools
- •ANDROID_HOME environment variable setup
- •SDK Manager configuration
- •Common Android Studio issues
Watchman
- •Installation via Homebrew (macOS):
brew install watchman - •Purpose: File watching for fast refresh
- •Troubleshooting watchman errors
- •Cache clearing strategies
Environment Configuration
iOS Setup
- •CocoaPods installation and troubleshooting
- •Pod install issues and resolutions
- •Xcode project configuration
- •Provisioning profiles and certificates
- •iOS Simulator management
- •Device selection:
xcrun simctl list devices
Android Setup
- •Gradle configuration
- •Android SDK path configuration
- •Environment variables (ANDROID_HOME, PATH)
- •AVD (Android Virtual Device) creation
- •Emulator performance optimization
- •ADB troubleshooting
Metro Bundler
- •Port 8081 configuration
- •Cache clearing:
npx react-native start --reset-cache - •Custom Metro config
- •Asset resolution issues
Common Setup Issues
"Command not found" Errors
- •PATH configuration
- •Shell profile updates (.zshrc, .bash_profile)
- •Symlink issues
SDK Not Found
- •SDK path verification
- •Environment variable troubleshooting
- •SDK Manager reinstallation
Pod Install Failures
- •CocoaPods version issues
- •Ffi gem compilation errors
- •Ruby version compatibility
- •
pod deintegrate && pod installstrategy
Build Failures
- •Clean build strategies
- •Dependency conflicts
- •Native module compilation errors
- •Xcode derived data clearing
When to Use This Skill
Ask me when you need help with:
- •Initial React Native environment setup
- •Installing and configuring Xcode or Android Studio
- •Setting up iOS simulators or Android emulators
- •Troubleshooting "Command not found" errors
- •Resolving SDK path or ANDROID_HOME issues
- •Fixing CocoaPods installation problems
- •Clearing Metro bundler cache
- •Configuring development environment variables
- •Troubleshooting build failures
- •Setting up watchman for file watching
- •Verifying development environment prerequisites
Quick Setup Commands
iOS (macOS)
# Install Xcode command line tools xcode-select --install # Accept Xcode license sudo xcodebuild -license accept # Install CocoaPods sudo gem install cocoapods # Install watchman brew install watchman # Verify setup xcodebuild -version pod --version watchman version
Android (All Platforms)
# Verify Android setup echo $ANDROID_HOME adb --version emulator -version # List available emulators emulator -list-avds # List connected devices adb devices
React Native Project
# Create new React Native project npx react-native init MyProject # Navigate to project cd MyProject # Install iOS dependencies cd ios && pod install && cd .. # Start Metro bundler npm start # Run on iOS (separate terminal) npm run ios # Run on Android (separate terminal) npm run android
Pro Tips
- •
Clean Builds: When in doubt, clean everything
bash# iOS cd ios && rm -rf build Pods && pod install && cd .. # Android cd android && ./gradlew clean && cd .. # Metro npx react-native start --reset-cache
- •
Environment Variables: Always verify environment variables after changes
bash# Add to ~/.zshrc or ~/.bash_profile export ANDROID_HOME=$HOME/Library/Android/sdk export PATH=$PATH:$ANDROID_HOME/emulator export PATH=$PATH:$ANDROID_HOME/platform-tools # Reload shell source ~/.zshrc
- •
Simulator Management: List and boot specific devices
bash# iOS xcrun simctl list devices xcrun simctl boot "iPhone 15 Pro" # Android emulator -list-avds emulator -avd Pixel_6_API_34
- •
Quick Health Check: Verify entire environment
bashnode --version # Node.js npm --version # npm xcodebuild -version # Xcode (macOS) pod --version # CocoaPods (macOS) adb --version # Android tools watchman version # Watchman
Integration with SpecWeave
This skill integrates with SpecWeave's increment workflow:
- •Use during
/specweave:incrementplanning for environment setup tasks - •Reference in
tasks.mdfor setup-related acceptance criteria - •Include in
spec.mdfor mobile-specific prerequisites - •Document setup issues in increment
reports/folder