Why is process.nextTick() useful?
It helps defer execution, maintain asynchronous APIs, and schedule high-priority callbacks.
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More FAQs in What Is process.nextTick() in Node.js?
process.nextTick() schedules a callback to run immediately after the current operation completes and before the Event Loop continues.
No. It uses a special nextTick queue that is processed before the Event Loop phases.
Yes. The nextTick queue is processed before timer callbacks.
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