Worked on the microsoft/vscode repository to enhance the multi-file diff editor by improving resource identification accuracy. Focused on refining the resource filtering logic, the developer introduced the use of the original URI in filtering processes, which addressed a core issue of misidentification across multiple files. This update improved traceability and correctness within the editor, enabling faster and more reliable code reviews. The work involved TypeScript for implementation, leveraging Git for version control and collaboration. By ensuring that the original URI is consistently used, the changes reduced context switching and increased trust in diff results for complex codebases and workflows.