Worked on the adobe/react-spectrum repository to improve type safety and documentation clarity in TypeScript code. Focused on refining the BoxAlignmentStyleProps shared types by removing default value annotations, ensuring that the types no longer implied default behaviors and more accurately reflected the intended CSS alignment properties. This adjustment helped prevent potential misunderstandings for developers consuming the library and aligned the type definitions with actual usage patterns. Updated related documentation to clearly communicate the change, referencing the specific commit for traceability. Demonstrated attention to detail and a methodical approach to both TypeScript typing and technical documentation within a collaborative open-source environment.