Example serial promises with error to handle individual cases.

promise.serial.waterfall.js

const delay = require("delay");

const people = [
  {
    id: 0,
    name: "Stewie",
    delay: 200
  },
  {
    id: 1,
    name: "Lois",
    delay: 100
  },
  {
    id: 2,
    name: "Peter",
    delay: 400
  },
  {
    id: 3,
    name: "Brian",
    delay: 10
  },
  {
    id: 4,
    name: "Glen",
    delay: 300
  }
];

people.reduce((promise, person, index, people) => {
  return promise.then(() => {
    return delay(person.delay).then(() => {
      if (person.id === 2) {
        // This is to simulate an error half way through.
        throw new Error("what up my foool!");
      }
      console.log("Look who we found!");
      console.log(person.id, person.name, person.delay);
    }).catch((err) => {
      // Here you handle each individual error. it does not stop the chain.
      console.log(err);
    });
  });
}, Promise.resolve()).then(() => {
  console.log("WE GOT DONE BISH!");
});