Is setImmediate() the same as setTimeout(fn, 0)?

No. setTimeout executes in the Timers Phase, while setImmediate executes in the Check Phase.

Verify This Answer

Cross-check this information using these trusted sources:

setImmediate() schedules a callback to execute during the Check Phase of the Event Loop.

It executes after the Poll Phase when the Event Loop enters the Check Phase.

It allows developers to defer work and schedule callbacks after I/O operations complete.

Browse all our FAQs or reach out to our support team