Worked on improving the stability and user experience of editor hints in the microsoft/vscode repository, focusing on front end development with TypeScript. Addressed a bug where hints were incorrectly rendered when the active editor was disposed by refining the logic in the hint rendering function. Enhanced the language selection process for empty cell hints by making it kernel-aware and introducing a dedicated command for changing cell languages, ensuring that language selection is contextually accurate. Reverted a previous change to prevent unintended triggers, restoring predictable behavior. The work emphasized careful debugging and incremental UX improvements within a complex TypeScript codebase.