Lydia Hallie is a software engineer and technical content creator with a focus on React, JavaScript, and web performance. She enjoys sharing technical deep-dives, and strives to make complex concepts accessible to developers of all skill levels.
How well do you truly understand what’s happening behind the scenes when working with async JavaScript? In this talk, we’ll go beyond surface-level explanations to explore the inner workings of promises, task queues, and the event loop — based on both the ECMAScript specification and engine implementations. Through clear visualizations and step-by-step walkthroughs, you’ll get a deeper understanding of how JavaScript handles async tasks.