Worked on the grafana/k6-DefinitelyTyped repository to deliver a type definitions upgrade and grammar analysis enhancements for Russian Nouns JS. Upgraded the russian-nouns-js library to version 2.3.0, refactored TypeScript imports for improved tree-shakeability, and deprecated outdated functions to streamline the codebase. Introduced new types and enums to strengthen grammar analysis and type safety, reducing potential runtime errors in downstream typings. Focused on maintainability and enabling broader language features for consumers of the project. Utilized TypeScript, JavaScript libraries, and dependency management to implement these changes, with the work centered on feature development rather than bug fixes during this period.