During February 2025, Jingli Xu focused on improving the file dialog experience in the opensumi/core repository by addressing a critical bug related to default file path resolution. Jingli refactored the logic to pass the FileTreeDialogModel into the getDefaultFilePath function, ensuring that the correct directory is selected when opening or saving files. This change required careful updates to all relevant call sites, maintaining a clear scope and minimizing risk. Working primarily with TypeScript and React, Jingli’s targeted fix enhanced the reliability and user experience of file operations, demonstrating a thoughtful approach to front-end development and code maintainability.