Atinux

const waitFor = (ms) => new Promise(r => setTimeout(r, ms))
const asyncForEach = async (array, callback) => {
  for (let index = 0; index < array.length; index++) {
    await callback(array[index], index, array)
  }
}

const start = async () => {
  await asyncForEach([1, 2, 3], async (num) => {
    await waitFor(50)

mirontoli

/**
 * @author Anatoly Mironov (mirontoli)
 * http://sharepointkunskap.wordpress.com
 * http://www.bool.se
 *  
 * http://stackoverflow.com/questions/3605495/generate-a-list-of-localized-language-names-with-links-to-google-translate/14800384#14800384
 * http://stackoverflow.com/questions/10997128/language-name-from-iso-639-1-code-in-javascript/14800499#14800499
 * 
 * using Phil Teare's answer on stackoverflow
 * http://stackoverflow.com/questions/3217492/list-of-language-codes-in-yaml-or-json/4900304#4900304