Worked on the grafana/k6-DefinitelyTyped repository to update and refactor TypeScript type definitions for Plotly.js, targeting version 3. Focused on improving the Layout API by restructuring nested title properties for greater type accuracy and maintainability. Deprecated and unused trace types were removed to streamline the typings and reduce confusion for downstream users. The update included comprehensive changes to the test suite, ensuring compatibility and correctness with the new type structure. This work emphasized API development and type definition best practices in TypeScript, delivering a single, well-documented feature that enhanced code quality and traceability within the repository’s type ecosystem.