Worked on the redis/node-redis repository to improve error handling and debugging workflows by addressing a core issue with ErrorReply errors. Focused on restoring standard JavaScript Error semantics, the work involved correcting the ErrorReply constructor in TypeScript to preserve stack traces that were previously erased. This change enhanced observability and made protocol errors easier to diagnose across deployments. By fixing a bug that set the stack property to undefined, the update improved maintainability and reliability without altering existing features. The contribution demonstrated strong debugging and error-handling skills, ensuring that error analysis and triage are more effective for future development efforts.