During our August 5th Courier Live, I was joined by Riley Napier, one of our Sr. Software Engineers, who updated the Courier Node.js SDK to support our new Idempotent Requests feature. This allows for safely retrying requests without accidentally performing the same operation twice, ensuring that notifications or messages are not sent multiple times if a network connection error occurs. With this update, developers can now provide an idempotencyKey value in an optional config object for each function that sends a POST request, enabling them to handle changing TypeScript and test their changes more effectively. The updated SDK provides a unique key in the Idempotency-Key header, allowing requests with the same key to be idempotent as long as that key exists in our system.