Worked on the tact-lang/tact repository to refactor file system dependency management, focusing on simplifying code and reducing reliance on external libraries. Replaced the mkdirp package with native Node.js fs.mkdirSync using the recursive option, resulting in more idiomatic TypeScript and Node.js usage. This change improved cross-platform compatibility and reduced the maintenance burden associated with third-party dependencies, while preserving existing behavior and ensuring reliability through code reviews and testing. The work did not introduce user-facing features but laid a foundation for future platform-native enhancements, demonstrating a methodical approach to refactoring and dependency management within a collaborative development environment.