Worked on improving the developer experience for the tanstack/router repository by enhancing the clarity and consistency of its API documentation. Focused on the NotFoundErrorType, the work involved renaming the 'route' property to 'routeId' and correcting a typo, aligning the documentation with established project naming conventions. This update, implemented in Markdown and leveraging skills in API design and documentation, aimed to reduce onboarding time for new integrators and support clearer communication of API behavior. The effort was collaborative, ensuring accuracy and alignment with team standards, and contributed to the overall hygiene and maintainability of the project’s documentation resources.