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What is the event loop?

Q: What is the event loop?

**Core Concept (TL;DR)** The event loop is the concurrency mechanism that coordinates synchronous execution frames on the Call Stack with asynchronously queued tasks, enabling single-threaded, non-blocking asynchronous execution. The Event Loop coordinating stack and queues CALL STACK <rect x="200" y="260" width="360" height="100" rx="14" fill="none" stroke="#f97316" stroke-w

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