Worked on the facebook/relay repository to enhance GraphQL type generation, specifically addressing cases where the same field appears in both conditional and unconditional fragments. Updated the code generation logic using Rust and TypeScript to ensure that generated types accurately reflect the intended structure of GraphQL queries, thereby improving type safety and reducing downstream errors for developers. The approach aligned with existing patterns in Relay’s type generation and fragment handling, maintaining consistency across the codebase. All changes were traceable to a dedicated commit, supporting clear auditability and streamlined code review within the project. No bugs were fixed during this period.