During October 2025, contributed to the facebook/react repository by developing a targeted linting enhancement focused on React hook usage. Built a new ESLint rule in JavaScript and TypeScript to disallow passing useEffectEvent directly as a JSX prop, addressing a common source of misuse and potential runtime issues. The implementation included comprehensive tests and improved error messaging to guide developers toward correct usage patterns. This work emphasized code quality and reliability, enhancing the overall developer experience within the project. No bug fixes were recorded during this period, as efforts centered on preventative measures and maintaining high standards in frontend development practices.