During October 2024, Andrzej Blazejuk focused on stabilizing numeric operations within the kamranahmedse/developer-roadmap repository, addressing reliability issues in percentage displays across dashboards. He refactored the getPercentage function using TypeScript, enhancing its ability to handle edge cases and ensuring consistent formatting of percentage outputs. This targeted bug fix improved the robustness of metrics visualization, reducing the likelihood of user-facing errors in edge scenarios. Andrzej’s work also included a broader refactor of number utilities, increasing code reusability and maintainability for front end development. The depth of his contribution lay in thoughtful handling of edge cases and code quality improvements.