Developed and delivered an enhancement to the v8.deserialize function within the grafana/k6-DefinitelyTyped repository, focusing on expanding input compatibility and improving type safety. The work involved extending v8.deserialize to accept ArrayBufferView types, including Buffer, TypedArray, and DataView, while ensuring unsupported types such as ArrayBuffer and String were properly rejected. Comprehensive tests were added to verify correct input handling and strengthen the repository’s type definitions. Utilizing TypeScript and Node.js, the developer improved runtime reliability for users and contributed to more robust type coverage. This targeted feature addressed a specific compatibility gap and reinforced the quality of the codebase.