During February 2026, XEmAX32 contributed TypeScript definitions to the DefinitelyTyped/DefinitelyTyped repository, specifically targeting the k6/x/socketio module. By enabling Socket.IO support for WebSocket testing in k6, XEmAX32 addressed the need for type safety and improved test tooling in real-time scenarios. The work involved authoring and merging a pull request that introduced comprehensive TypeScript typings, ensuring developers could leverage static analysis and autocompletion when testing WebSocket integrations. This contribution required a strong understanding of TypeScript, WebSocket protocols, and testing methodologies. The depth of the work lay in accurately modeling complex Socket.IO interfaces for robust, type-safe test development.