seq-prom/example/promise.js

A small library to allow for sequential operations on an array using Promises

/**
 * Created by adrianbrowning on 15/02/2018.
 */
const SeqProm = require('seq-prom');

SeqProm({
  list     : [1, 2, 3],
  autoStart: true,
  cb(item, resolve, reject) {
    console.log(`Item [${item}] called!`);
    setTimeout(function() {
      if (item === 3) {
        return reject('Not sure about this!');
      } else {
        return resolve(item);
      }
    }, item * 1000);
  },
  errorCB(item, reason) {
    console.error(`Item [${item}] failed with error: ${reason}`);
  },
  finalCB(errors, response) {
    console.log('All done!');
  },
})
    .promise
    .then(([errors, responses]) => console.log(errors, responses));