Contoh chain promise AllSettled

promise-allsettled.js

// const result = [];
// result.forEach((item, index) => {
//   db.collection("pis_list_screen")
//     .findOne({
//       destination: item.lineDestination,
//       stopkey: item.stopKey,
//     })
//     .then(
//       function (items) {
//         return (scodeku = items.scode);
//       },
//       function (err) {
//         console.error("The promise was rejected", err, err.stack);
//       }
//     );
// });

function queryDataAll() {
  const arrayPromiseFindOne = [];

  result.forEach((item, index) => {
    const findOnePromise = db.collection("pis_list_screen").findOne({
      destination: item.lineDestination,
      stopkey: item.stopKey,
    });

    arrayPromiseFindOne.push(findOnePromise);
  });

  olahDataQuery(arrayPromiseFindOne);
}

// Menggunakan Promise AllSettled
function olahDataQuery(arrPromise) {
  Promise.allSettled(arrPromise)
    .then((results) => {
      olahResultPromise(results);
    })
    .catch((error) => {
      console.log(error);
    });
}

function olahResultPromise(arrResults) {
  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/allSettled
  const intPanjangResult = arrResults.length;
  const arrayResult = [];
  for (let i = 0; i < intPanjangResult; i += 1) {
      const result = arrResults[i];
      if (result.status === 'fulfilled') {
        arrayResult.push(arrayResult.value);
      }
  }

  hasilResultPromise(arrayResult);
}

function hasilResultPromise(arrResult) {
  console.log(arrResult);
}

// Jalankan dengan memanggil fungsi paling awal
queryDataAll();