simple queue

index.js

const makeQueue = () => {
  let currentTask = Promise.resolve();
  // create a new promise so that errors can be bubbled
  // up to the caller without being caught by the queue
  return (fn) =>
    new Promise((resolve, reject) => {
      currentTask = currentTask
        .then(() => fn())
        .then(resolve)
        .catch(reject);
    });
};

const queue = makeQueue();
// function job(n) {
//   return new Promise((resolve, reject) => {
//     if (+n % 2 === 0) {
//       reject();
//     } else {
//       setTimeout(() => {
//         resolve();
//         console.log(n + "__start");
//       }, +n * 1000);
//     }
//   });
// }
const sequenceOfEvents = [];

const job = (name) => {
  return new Promise((resolve, reject) => {
    if (+name % 2 === 0) {
      setTimeout(() => {
        reject();
      }, 1000);
    } else {
      sequenceOfEvents.push(`${name} started`);
      setTimeout(
        () => {
          sequenceOfEvents.push(`${name} done`);
          resolve();
        },
        +name > 2 ? 5000 : 0
      );
    }
  });
};

(async function () {
  try {
    await Promise.allSettled([
      queue(() => job("1")),
      queue(() => job("2")),
      queue(() => job("3")),
    ]);
  } catch (error) {
  } finally {
    console.log(sequenceOfEvents);
  }
})();