DollhouseMCP

# Refactoring Progress - July 7, 2025 ## Quick Reference for Next Session **GitHub Issue**: #44 - Epic: Modularize 3000-line index.ts into maintainable modules **Branch**: `refactor/modularize-codebase` ## Current Status - **Phase 1**: ✅ COMPLETE - Foundation structure created - **Phase 2**: ✅ COMPLETE - Core utilities extracted - **Phase 3**: ✅ COMPLETE - Persona module extracted - **Phase 4**: ✅ COMPLETE - Marketplace module extracted - **Phase 5**: ✅ COMPLETE - Update module extracted - **Phase 6**: ✅ COMPLETE - Server refactor and tool modularization - **Phase 7**: ✅ COMPLETE - Cleanup and final optimization ## Commits So Far 1. `e3f2d36` - refactor(phase1): create module structure and extract types/constants 2. `b76d978` - refactor(phase2): extract core utilities to separate modules 3. `584f226` - refactor(phase3): extract persona module 4. [pending commit] - refactor(phase4): extract marketplace module ## Lines Extracted - Phase 1: Types and constants - Phase 2: ~400 lines (utilities) - Phase 3: ~630 lines (persona logic) - Phase 4: ~380 lines (marketplace functions) - Phase 5: ~784 lines (update/version management) - Phase 6: ~402 lines (server setup and tool handling) - Phase 7: ~115 lines (cleanup and optimization) - **Total**: ~2,711 lines removed from index.ts - **Final Result**: index.ts reduced from 3,000+ lines to 1,314 lines (56% reduction) ## Refactoring Summary ### What We Achieved 1. **Modular Architecture**: Separated concerns into logical modules 2. **Type Safety**: Extracted all interfaces and types to dedicated files 3. **Security**: Centralized validation and security constants 4. **Maintainability**: Each module now has a single responsibility 5. **Testability**: Smaller, focused modules are easier to test 6. **Scalability**: New features can be added without touching core files ### Module Structure Created ``` src/ ├── cache/ # API caching functionality ├── config/ # Configuration and constants ├── marketplace/ # GitHub marketplace integration ├── persona/ # Persona management ├── security/ # Input validation and security ├── server/ # Server setup and tool handling │ └── tools/ # Tool definitions by category ├── types/ # TypeScript interfaces ├── update/ # Update and version management └── utils/ # Utility functions ``` ## Key Files to Check - `src/index.ts` - Still contains remaining code - `src/types/` - All TypeScript interfaces - `src/config/constants.ts` - App constants - `src/security/constants.ts` - Security limits - `src/utils/` - Git, filesystem, version utilities - `src/persona/` - Complete persona module ## Build Command ```bash npm run build ``` ## Important Notes - Using `.js` extensions in imports for ESM - TypeScript null vs undefined handling matters - Build must pass after each phase - Maintain backwards compatibility