var guid = 0;

function run() {

  guid++;

  var id = guid;

  return new Promise(resolve => {

    // resolve in a random amount of time

    setTimeout(function () {

      console.log(id);

      resolve(id);

    }, (Math.random() * 1.5 | 0) * 1000);

  });

}

​

var promises = Array.from({ length: 10 }).reduce(function (acc) {

  return acc.then(function (res) {

    return run().then(function (result) {

      res.push(result);

      return res;

    });

  });

}, Promise.resolve([]));

​

promises.then(console.log);