fun with promises

promise_series.js

const list = ['grape stomper', 'headband', 'purple urkle']; // collection that you want to perform async operation on
const results = [];

// series becomes an array of "thenable" Promises which have their
// succesfull results pushed into a seperate array
const series = list.map((item) => () => {
    return Promise.resolve(asyncFunc(item))
        .then(result => results.push(result));
});

// "seed" the reduce function with a Promise resolution
// because every item in series is a promise we call then
series.reduce((prev, cur) => prev.then(cur), Promise.resolve())
  .then(() => ) // more async/handle success
  .catch(error => ); // handle errors