Rodrigo worked on the facebook/lexical repository, focusing on improving the stability of the Lexical-markdown package. He addressed a bug where node transformations could unintentionally remove nodes when the replacement function returned false, which previously risked data loss during document editing. Using TypeScript, he modified the transformation logic to ensure nodes are only removed when explicitly intended by the replacement logic. Rodrigo also developed targeted tests to confirm the non-destructive behavior of these transformations, leveraging his skills in Markdown and testing. His work enhanced the reliability of editor workflows, contributing to more predictable and stable downstream feature development in the project.