Worked on the TanStack/router repository to deliver a RouteTree Formatting Toggle for Performance, introducing a configurable option in the router-generator to disable formatting of the generated routeTree for non-human-readable outputs. This feature reduced CPU overhead during route generation, enabling faster build times for large projects by skipping unnecessary formatting steps. The implementation demonstrated proficiency in TypeScript and full stack development, with attention to code quality and commit hygiene. Testing was incorporated to ensure reliability of the new feature flag. No major bugs were reported or fixed during this period, reflecting a focused effort on performance optimization and maintainable code enhancements.