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Rewrites on React, Node.js, TypeScript and AI. A translated body is shown when it exists. If it does not, you see the English text and a note that says so.
Tagged: event-loop
The Rare Case Where JavaScript Runs Synchronously on Purpose
JavaScript almost always yields to the event loop while waiting on outside work. The rare case where a call blocks on purpose, and why that API exists at all.
4 min readJavaScript event loop: microtasks, macrotasks, and the call stack
Trace how promises, timers, and fetch callbacks move through microtask and task queues so async logs stop looking random in interviews and production bugs.
3 min read
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