Are JavaScript forever-pending promises bad?

Question

Say I have a promise called myProm, and say I have success and error handlers called onSuccess and onError.

Whenever my promis

Answer 1

You can use Promise.race(), set timeoutHandler as a function which returns a rejected a Promise in ten seconds, else onSuccess should be called at fulfilled Promise of myProm

function myProm() {
  return new Promise((success, err) => {
    setTimeout(() => {
      success("myProm")
    }, Math.floor(Math.random() * 11000))
  })
}

function timeoutHandler() {
  return new Promise((_, timeout) => {
    setTimeout(() => {
      timeout(new Error("timeoutHandler"));
    }, 10000)
  })
}

function onSuccess(data) {
  console.log("success", data)
}

function onError(err) {
  console.log("err:", err)
}

function onTimeout(e) {
  if (e.message && e.message === "timeoutHandler") {
    console.log(e.message + " handled");
  }
  else { 
    onError(e)
  }
}

Promise.race([myProm(), timeoutHandler()])
.then(onSuccess, onTimeout);

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