Worked on the hey-api/openapi-ts repository to enhance the integration of TanStack Query by introducing type-safe configuration for queryOptions using TypeScript. Focused on improving developer experience, the work added precise type annotations that enable better autocompletion and compile-time error checking when configuring queries. Addressed a bug by updating TypeScript declaration source map URLs, which improved debugging and maintainability of the generated client code. Maintained alignment with the build and test workflows by updating test references to ensure compatibility with new typings. Demonstrated skills in API development, testing, and type safety, contributing to more robust and maintainable TypeScript client code.