lightning-promise.js

/* MyLightningComponentHelper.js */
({
	requestAccounts: function(cmp) {
	  var auraAction = cmp.get("c.getLimitedAccounts");
	  auraAction.setParams({
	    limitter: 10
	  });

	  acumen.promisify(auraAction)
	    .then(function(auraRes) {
	      console.log("res", auraRes.getReturnValue());
	    })
	    .catch(function(auraRes) {
	      console.error("err", auraRes.getErrors());
	    });
	}
})

/* acumen-promisify.js */
window.acumen = (function Promiser(acumen) {

	var promisify = function(auraAction) {
		return new Promise(function(resolve, reject) {
			auraAction.setCallback(this, function(res) {
				var state = res.getState();
				if(state === "SUCCESS") {
					resolve(res);
				} else {
					reject(res);
				}
			});

			$A.enqueueAction(auraAction);
		});
	};

	acumen.promisify = promisify;

	return acumen;
})(window.acumen || {});