The Myth of Single-Threaded JavaScript: Inside the Language’s Hidden Concurrency Engine

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Explore the concurrency model of modern JavaScript, including the event loop, async/await, and more.
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Modern JavaScript offers a rich (although muddled) concurrency landscape. From the event loop and. async/await to Web Workers, async iterators, and Shared.ArrayBuffers. Understanding how these layers of concurrency interact is essential for building responsive UIs, scalable backends, and reliable serverless functions.