Jinhee worked on the ex-em/EVUI repository, focusing on enhancing the Tree Grid component’s sorting functionality using Vue.js and JavaScript. They addressed issues where sorting state was lost during column width changes and ensured that sort icons rendered only for sortable columns, improving both reliability and user experience. Jinhee introduced a useSort option to allow temporary disabling of sorting, with conditional rendering of related UI elements based on this state. Additionally, they updated the EVUI library dependencies to maintain compatibility and security. Their work demonstrated a thoughtful approach to component development and UI/UX, emphasizing maintainability and robust state management.