Worked on improving code quality and standardization within the facebook/metro repository by focusing on ESLint configuration. Addressed duplication in linting rules by replacing a copied version of the extra-arrow-initializer rule with the original from the WWW repository, ensuring consistency across projects and reducing maintenance overhead. This targeted update streamlined the ESLint setup, making it easier to manage and less prone to drift over time. The work involved JavaScript development and code quality assurance, emphasizing maintainable practices. No bugs were fixed during this period, as the primary contribution centered on enhancing the repository’s code standards through thoughtful configuration improvements.