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const fs = require("fs"); | |
setImmediate(() => { | |
process.stdout.write(`setImmediate (after poll phase)\n`); | |
process.nextTick(() => { | |
process.stdout.write(`nextTick (nested registered in setImmediate())\n`); | |
}); | |
}); | |
setTimeout(() => { | |
process.stdout.write(`setTimeout (timers phase)\n`); | |
process.nextTick(() => { | |
process.stdout.write(`nextTick (nested registered in setTimeout())\n`); | |
}); | |
}, 0); | |
fs.readdir("./", (err, data) => { | |
process.stdout.write(`readdir (poll phase)\n`); | |
process.nextTick(() => { | |
process.stdout.write(`nextTick (nested registered in readdir())\n`); | |
}); | |
}); | |
process.nextTick(() => { | |
process.stdout.write(`nextTick (registered on top level)\n`); | |
}); | |
// Output: | |
/* | |
nextTick (registered on top level) | |
setTimeout (timers phase) | |
nextTick (nested registered in setTimeout()) | |
readdir (poll phase) | |
nextTick (nested registered in readdir()) | |
setImmediate (after poll phase) | |
nextTick (nested registered in setImmediate()) | |
*/ |
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This example looks good. Thanks @danielkhan
Also, i added
setImmediate
insidesetTimeout
to verify once more ifprocess.nextTick(function(){})
(without i/o) gets executed after every phase in the eventLoop. From the output i received i can infer the answer asyes
.