Worked on the fastapi/typer repository to enhance typing module compatibility across Python versions, focusing on dependency management and Python typing. Refactored the import logic to utilize the built-in typing module for Python 3.9 and above, while providing a fallback to typing_extensions for older versions. This approach reduced reliance on external dependencies and minimized potential import errors, improving maintainability and packaging consistency across diverse environments. The work centered on Python and typing, ensuring that unnecessary imports were eliminated in newer versions. This targeted feature improved cross-version stability and streamlined the codebase, reflecting a thoughtful approach to compatibility and dependency management.