Worked on the microsoft/vscode repository to address a memory leak related to cursor position listeners in the editor. Using TypeScript and front end development skills, implemented a solution that ensures only one cursor position listener remains active at any time, preventing the accumulation of multiple listeners when relative line numbers are configured. The approach included automatic disposal of the listener when it was no longer needed and cleanup of related imports, resulting in reduced memory usage and improved editor responsiveness during configuration changes. Demonstrated a focus on performance optimization and code health within a large-scale TypeScript and JavaScript codebase.