During July 2025, Ivendor focused on improving API safety in the facebook/fbthrift repository by addressing potential misuse of cancellation token handling. They replaced the use of folly::CancellationToken::merge with folly::cancellation_token_merge, applying a targeted codemod to ensure safer asynchronous programming practices. This change, implemented in C++, enhanced maintainability and reduced the risk of incorrect static method usage within the codebase. By tracking the update in a single, traceable commit, Ivendor ensured minimal disruption and clear documentation. Their work demonstrated careful code refactoring and a strong understanding of asynchronous programming concepts, resulting in a safer and more robust API.