Worked on the source-academy/js-slang repository to address correctness and maintainability in the CSE stream lineage component. Focused on improving the reliability of stream generation by implementing a targeted bug fix that simplified control flow, removed redundant checks, and optimized evaluation result handling. This approach reduced edge-case errors in downstream tooling and ensured more accurate stream lineage tracking. Collaborated closely with other contributors to align the solution with project standards, utilizing TypeScript and JavaScript for front end development. The work emphasized code quality and maintainability, resulting in a more robust foundation for future enhancements to the stream evaluation process.