In February 2026, Thomas Elliott contributed to the DefinitelyTyped/DefinitelyTyped repository by developing type definitions and tests for the Memory Storage API, specifically targeting the memorystorage library. He focused on creating precise TypeScript typings for the MemoryStorage interface and its constructor, ensuring compatibility with the established Web Storage API. Thomas paired these definitions with a targeted test suite, leveraging his skills in TypeScript and testing to validate core memory-backed storage behavior. His work improved type safety and reliability for downstream TypeScript projects, while also enhancing repository maintainability through clear documentation, review-ready changes, and alignment with existing type definition standards.