This week we focused on performance, security, and testing infrastructure across Color Lock, RetroFantasy, and Sure Thing. The bundle size work and security hardening in particular should have lasting impact.

Color Lock: Performance Revolution

We reduced Color Lock’s main JavaScript bundle from 914KB down to 259KB through code-splitting — a 72% reduction that significantly improves load times.

We also tackled TypeScript’s any types, replacing them with proper Firestore interfaces throughout the codebase. This isn’t just about type safety — it’s about catching bugs before they reach players and making the code easier to work with.

On the mobile side, we led a comprehensive refactoring effort, breaking down monolithic components and introducing structured error handling with a new AppError system. The iOS app also got 91 new unit tests covering hint generation and cloud function behavior, plus a migration to modern async/await patterns that should make the code much more maintainable.

Security Hardening Across Projects

Security got attention across the board this week.

In Color Lock, we removed dangerous dangerouslySetInnerHTML usage, added proper admin authorization on sensitive endpoints, and stripped user IDs from analytics responses. On the iOS side, we wrapped 311 debug print statements in #if DEBUG flags to prevent sensitive information from leaking in production builds.

In RetroFantasy, we implemented WebSocket session token authentication and origin checking to lock down the real-time multiplayer connections.

In Sure Thing, we switched from camera-based verification to device biometrics (Face ID/Touch ID) for a smoother and more secure user experience.

New Features and Polish

Beyond the infrastructure work, we shipped several new features. Color Lock introduced a “weekly hardest puzzle” system that gives dedicated players an extra challenge, complete with animated reveals and caching for smooth performance.

In RetroFantasy, we added animated score counting during matchup reveals — slot machine-style number rolls that make the fantasy experience more satisfying. We also implemented expandable matchup cards and position-by-position score reveals that bring more drama to the home screen.

We also embraced a 70s TV room aesthetic redesign for RetroFantasy, moving away from generic layouts toward something with real personality. Sometimes the best technical work enables creative expression.

Testing and Reliability

One theme that stood out this week was the focus on testing and reliability. We added comprehensive frontend test coverage to Color Lock and fixed nine failing test files in the Vitest suite. In RetroFantasy, we introduced Vitest testing infrastructure with structured state management via Zustand, along with WebSocket handler tests and graceful shutdown handling.

These aren’t the flashiest features, but they’re the foundation that lets teams ship confidently and iterate quickly.

Looking Forward

With this week’s focus on performance, security, and testing, all three projects are in a much stronger position for rapid feature development. The infrastructure investments—especially around bundle optimization, type safety, and test coverage—should pay dividends for months to come.

Keep an eye out for more exciting feature work as teams build on these solid foundations!