Worked on aligning and enhancing the DeviceInfo API for webostvjs within the grafana/k6-DefinitelyTyped repository, focusing on updating the DeviceInfo interface to use non-optional properties and introducing new device specification fields. Leveraged TypeScript and type definition skills to modernize the test suite, ensuring that all new and existing properties were thoroughly covered and type-safe for downstream consumers. This approach reduced the risk of runtime errors and improved maintainability by keeping type definitions in sync with the latest library version. Maintained compatibility by merging upstream changes, prioritizing forward-compatibility and reliability throughout the development and testing process.