nextTick

nextTick.js

var queue = [];
for (var i = 0; i < 10; i++) {
  queue.push(function () {
    process.nextTick(function () {
      console.log(Date.now());
      (queue.length > 0) ? queue.shift()() : null;
    });
  });
}
queue.shift()();
console.log('after');