Catherine worked on the easy-games/airship and airship-testbed repositories, focusing on improving code generation, type safety, and developer tooling. She enhanced TypeScript and C# interoperability by refining type definitions and adjusting code generation to prevent conflicts with UnityEngine.Rect. Her work included integrating TypeDoc for better documentation, improving URL parsing in chat interfaces to distinguish emails from URLs, and fixing regex patterns to ensure accurate type handling. By addressing both feature development and bug fixes, Catherine reduced maintenance overhead and improved reliability, demonstrating depth in API design, regular expressions, and TypeScript development while strengthening cross-language support for Unity projects.