Worked on improving the core stability of the OpenSumi project by addressing a bug in the Debug Variables View within the opensumi/core repository. Focused on refactoring the description rendering logic to properly handle and display undefined values, which previously led to incorrect type checks and inaccurate variable representation in the debugger interface. Utilized JavaScript and TypeScript along with frontend development skills in React to implement these changes. This targeted fix enhanced the reliability of the debugging tools, ensuring that users receive accurate feedback during troubleshooting and reducing potential confusion when inspecting variables in the debugging user interface.