During April 2026, Paulo Fernando focused on improving cache integrity within the prettier/prettier repository. He addressed a critical bug by correcting the casing of the useCheckSum option to align with file-entry-cache v11, ensuring that content-based caching compared file contents accurately rather than relying on file size. This adjustment enhanced cache reliability and reduced incorrect cache invalidations across development and CI environments. Paulo applied his expertise in Node.js, JavaScript, and full stack development, emphasizing robust testing practices. His work demonstrated careful attention to dependency alignment and contributed to more stable and predictable cache-related operations within the project’s infrastructure.