CODEWITHSUNDEEP
node.jssettimeout
blagus
blagus

Reputation: 2355

timer signature in setTimeout in NodeJS

What would be the correct way to get the Nodejs timer signature?

Browsers returns integers, but NodeJS returns an internal object which doesn't seem to have a property or method with a parse-able string or number. Is there any way to get this?

Given the following code:

var x = setTimeout(()=>{},1);

console.log(x); in NodeJS returns:

Timeout {
  _called: false,
  _idleTimeout: 1,
  _idlePrev: [TimersList],
  _idleNext: [TimersList],
  _idleStart: 2275,
  _onTimeout: [Function],
  _timerArgs: undefined,
  _repeat: null,
  _destroyed: false,
  domain: [Domain],
  [Symbol(unrefed)]: false,
  [Symbol(asyncId)]: 73,
  [Symbol(triggerId)]: 5 }

while browsers returns (almost random) integers like 3

Upvotes: 0

Views: 689

Answers (2)

zhyd1997
zhyd1997

Reputation: 175

try this solution:

let timerId: ReturnType<typeof setTimeout>

Details: in a browser, the timer identifier is a number. In other environments, this can be something else. For instance, Node.js returns a timer object with additional methods.

ref: the last paragraph before setInterval section

Upvotes: 0

halilcakar
halilcakar

Reputation: 1648

So hi again @blagus,

Your answer actually lives on the docs. Here you can see the referance from nodejs docs which called Symbol.toPrimitive;

const timer = setTimeout(() => {}, 100);
const timerID = timer[Symbol.toPrimitive]();

clearTimeout(timerID); // you can use this directly on clearTimeout to clear or
// clearTimeout(timer); // just use timer itself =)
console.log(timer[Symbol.toPrimitive]()); // give's you a serializable id which is a number bdw :)
console.log(timer);

Upvotes: 1

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