Wilson Khoo focused on stabilizing shadow DOM interactions in the GovTechSG/oobee repository, addressing a key bug that impacted DOM traversal reliability. He improved TypeScript safety by refining type annotations, which reduced build-time warnings and mitigated potential runtime issues. His work centered on enhancing element selection within shadow DOMs, ensuring the codebase remains maintainable and robust for future development. Using front-end development skills and TypeScript, Wilson’s targeted fix improved the overall reliability of the application’s DOM handling. Over the month, he contributed a single, well-scoped bug fix, demonstrating depth in addressing complex type safety and maintainability challenges in modern web applications.