During September 2025, Hokkyss contributed to the TanStack/router repository by enhancing documentation around environment-based function execution in runtime-aware fullstack development. Focusing on the createIsomorphicFn and envOnly utilities, Hokkyss clarified how these functions manage execution across different environments, helping developers build safer and more predictable fullstack applications. The work involved technical writing in Markdown and TypeScript, with an emphasis on improving onboarding and reducing misconfigurations. Additionally, Hokkyss addressed a minor typo in the server functions streaming documentation, demonstrating attention to detail. The contributions were focused and well-aligned with project guidelines, providing depth in documentation and developer experience improvements.