Rodrigo worked on the facebook/lexical repository, focusing on improving the reliability of Lexical-markdown transformations. He addressed a bug where node transformations could unintentionally remove nodes even when the replacement function returned false, which previously risked data loss during editing. Using TypeScript, he modified the transformation logic so that nodes are only removed if explicitly indicated by the replacement logic. Rodrigo also developed targeted tests to ensure the new behavior preserved nodes correctly, emphasizing non-destructive editing. His work centered on bug fixing, Markdown processing, and testing, contributing to the overall stability of the editor without introducing new features.