Worked on the google/j2objc repository to enhance the treeshaker component by addressing stability issues related to Java records. Focused on preventing crashes during the processing of record declarations and methods, the work involved implementing support for Java records through careful management of type scopes using Java. This included adding new traversal logic and comprehensive unit tests to verify correct handling and regression coverage. By resolving a NullPointerException and introducing targeted test cases, the changes improved the reliability of treeshaker for downstream builds and analysis. The approach demonstrated attention to robust software development and thorough validation through unit testing practices.