During September 2025, At worked on enhancing dependency resolution error messaging within the nestjs/nest repository. Focusing on the NestJS framework, At improved how the system communicates common issues such as misimports and missing providers, providing developers with clearer, more actionable guidance and direct links to relevant documentation. The work leveraged TypeScript and emphasized robust error handling and dependency injection patterns, aiming to streamline the debugging process for framework users. While the contribution was limited to a single feature over one month, it demonstrated a focused approach to framework development, addressing a specific pain point in developer experience with targeted, maintainable changes.