Worked on the withastro/astro repository to enhance the Astro Language Server by implementing a compatibility guard for TypeScript 7. This feature detects incompatible TypeScript 7 native compiler versions and proactively fails with a clear, actionable error message, preventing runtime crashes and reducing support overhead. The solution was developed using Node.js and TypeScript, with a targeted automated unit test created to verify the early-fail behavior through a stubbed TypeScript module. This approach improved the stability of the language server for users adopting TypeScript 7 and aligned the project with its compatibility goals, demonstrating a focus on robust, maintainable engineering practices.