Worked on stabilizing the realtime messaging test suite in the ably-js repository, focusing on improving reliability and consistency in continuous integration cycles. Addressed test flakiness by deferring assertions to the next event loop, ensuring all pending I/O operations completed before validation, which prevented race conditions where messages might not be fully processed. This targeted fix enhanced the dependability of realtime tests and accelerated feedback loops for releases. Demonstrated strong proficiency in JavaScript, Node.js, and asynchronous testing patterns, applying event-loop awareness to resolve subtle timing issues and contribute to safer, more predictable release processes within the JavaScript codebase.