mixpanel-react-native/claude/updates/change-analysis-2025-05-30.md

Official React Native Tracking Library for Mixpanel Analytics

# Change Analysis Report - 2025-05-30

## Summary of Changes Since Initial Documentation

### High-Activity Areas

1. **JavaScript Implementation Layer**: 
   - Files affected: 5 core files (mixpanel-main.js, mixpanel-core.js, mixpanel-persistent.js, mixpanel-queue.js, mixpanel-storage.js)
   - Nature of changes: Bug fixes, feature additions, improved storage handling
   - Pattern implications: Better token isolation, improved persistence management

2. **Main API Interface**:
   - Files affected: index.js, index.d.ts (implied)
   - Nature of changes: New optional parameter for gzip compression
   - Pattern implications: API evolution while maintaining backward compatibility

3. **Test Infrastructure**:
   - Files affected: Multiple test files, jest setup
   - Nature of changes: Added expo-crypto mocking, improved test coverage
   - Pattern implications: Enhanced testing for Expo compatibility

### New Additions

- **New Dependencies**: 
  - `expo-crypto`: For UUID generation in Expo environments
  
- **New Features**:
  - `useGzipCompression` parameter in init() method
  - Improved identity queue management

- **New Patterns**:
  - Conditional property inclusion in profile data (using spread operator with conditions)
  - Token-specific storage instance initialization

### Deprecated/Removed
- None identified in this update cycle

### Areas Requiring Deep Analysis

1. **Storage Pattern Evolution**: The change from global to token-specific storage initialization needs investigation
2. **Identity Management**: New `identifyUserQueue` call suggests improved queue handling for user identification
3. **Expo Compatibility**: Addition of expo-crypto indicates enhanced Expo support strategy