Jiawei Ou developed a dynamic downloader registration system for the Lightning-AI/litData repository, focusing on extensibility and maintainability of the streaming module. By introducing a register_downloader function and refactoring the API for clarity, Jiawei enabled plug-in downloader extensions and improved code consistency. The work included comprehensive unit tests to validate the registration flow and leveraged AI-generated docstrings to enhance documentation quality. Using Python and applying principles of API design and software engineering, Jiawei’s contribution addressed the need for a more flexible streaming pipeline, laying groundwork for future enhancements while ensuring robust test coverage and clear, maintainable code.