In April 2025, YS focused on enhancing the lynx-family/lynx-stack repository by delivering modern React JSX runtime support and strengthening TypeScript definitions. They enabled tsconfig settings for 'jsx': 'react-jsx', extended TypeScript coverage for standard JSX elements, and introduced stricter type safety to catch unsupported elements at compile time. This work, implemented using JavaScript and TypeScript, improved the maintainability and safety of React-based modules, facilitating smoother migrations to the modern JSX runtime. YS concentrated on feature delivery and alignment between TypeScript and JSX, laying a solid foundation for safer development practices without addressing major bug fixes during this period.