Worked on the gravity-ui/nodekit repository to deliver AppContext AbortSignal Cancellation, enabling graceful cancellation of long-running operations. Implemented an AbortController and exposed its signal, ensuring that both child contexts and logging mechanisms properly respected the aborted state. Developed comprehensive tests to verify that abort signals were triggered when a context ended or failed, establishing robust cancellation handling. This work enhanced reliability and resource management, particularly during failure scenarios, and laid the groundwork for consistent cancellation semantics across the codebase. The project was executed using TypeScript, with a focus on the Context API, error handling, and test-driven development practices.