Custom promise to detect a click on discord button and return the button clicked (modified, modifications not tested). Follows TypeScript notations...

CustomPromise.ts

/** 
  *Parameters 
  promisedData must be declared in another part of the code prior to the call of this function. 
  dom_selector is only and example of use. this can perfectly be used backend for servers and output in a server-side file, another gui, a distant ftp, etc, 
  *Returns the promised data (here, wyth typescript, it is a string). 
  Is resolved when the given parameter promisedData is no longer undefined. 
  *Example of call: 
  let myPromiseOfData 
  // ...
  myPromiseOfData = "MY HEART IS TRUE"
  // ...
  const myData = await getPromisedResults(myPromiseOfData)
*/
async function getPromisedResults(promisedData, dom_selector="") {

  // Lands that now to later deduce the time elapsed before the resolution
  const beforePromiseInMs = Date.now()

  // Lands that now to later track the deadline
  const delayInMs = 3000
  // NOTE about previous line: this.configUponClick.ClickedButton and this.configUponExpiration.TimeClicksAreHandledInMs have been set by another function
  const deadlineDate = beforePromiseInMs + delayInMs

  // Prepares the future (will return the data, plus the time it took ot get it)
  const promisedResults = new Promise(resolve => {
    try {
      const resolvePromise = () => {
        const tickDate = Date.now()
        console.log("\n checking out promise\n deadline: " + deadlineDate + "\n now: " + tickDate)
        if (promisedData !== undefined) {
          clearInterval(retryGetEvent)
          const elapsedMs = Date.now() - beforePromiseInMs
          resolve({
            definedData: promisedData,
            lapse: elapsedMs
          })
          if (dom_selector.length>0) document.querySelector(dom_selector).innerHTML += promisedData
          console.log("\n getPromisedResults: Promise resolved: \nValue " + promisedData + " gotten after " + elapsedMs + "ms")
        }
        else if (tickDate >= deadlineDate) {
          clearInterval(retryGetEvent)
          resolve({
            definedData: null,
            lapse: delayInMs
          })
          if (dom_selector.length>0) document.querySelector(dom_selector).innerHTML += "Queue d'al."
        }
      }
      let retryGetEvent = setInterval(resolvePromise, 1000) // Checks the event every second

    } catch (err) { console.log(err) }
  })
}

async function start() {
  let myPromiseOfData
  // ...
  myPromiseOfData = "</br>MES INTENTIONS SONT PURES! 🦄"
  // ...
  const myData = await getPromisedResults(myPromiseOfData);
}