During December 2025, this developer contributed to the huggingface.js repository by integrating the HY-WorldPlay library, expanding the available model resources for downstream tasks. The work focused on TypeScript development and seamless library integration, emphasizing dependency management and collaboration with project maintainers. By introducing HY-WorldPlay, the developer enabled faster prototyping and enriched the developer experience, supporting a broader range of tasks within the ecosystem. The implementation leveraged both TypeScript and JavaScript/Node.js, ensuring compatibility and maintainability. No major bugs were reported during this period, reflecting a focused and stable feature delivery that enhanced the project’s extensibility and resource accessibility.