coffeescript/documentation/js/async.js

// Generated by CoffeeScript 2.0.0-alpha
var countdown, sleep;

sleep = function(ms) {
  return new Promise(function(resolve) {
    return window.setTimeout(resolve, ms);
  });
};

countdown = async function(seconds) {
  var i, j, ref, utterance;
  for (i = j = ref = seconds; ref <= 1 ? j <= 1 : j >= 1; i = ref <= 1 ? ++j : --j) {
    if (window.speechSynthesis != null) {
      utterance = new SpeechSynthesisUtterance("" + i);
      window.speechSynthesis.speak(utterance);
    }
    console.log(i);
    await sleep(1000);
  }
  return alert("Done! (Check the console!)");
};

countdown(3);