native Promise used if avalable as async core

lib/rsvp/async.js

@@ -3,6 +3,29 @@ var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.We
 var async;
 var local = (typeof global !== 'undefined') ? global : this;
 
+function checkNativePromise() {
+  if (typeof Promise === "function" &&
+      typeof Promise.resolve === "function") {
+    try {
+      /* global Promise */
+      var promise = new Promise(function(){});
+      if ({}.toString.call(promise) === "[object Promise]") {
+        return true;
+      }
+    } catch (e) {}
+  }
+  return false;
+}
+
+function useNativePromise() {
+  var nativePromise = Promise.resolve();
+  return function(callback, arg) {
+    nativePromise.then(function () {
+      callback(arg);
+    });
+  };
+}
+
 // old node
 function useNextTick() {
   return function(callback, arg) {
@@ -58,7 +81,9 @@ function useSetTimeout() {
   };
 }
 
-if (typeof setImmediate === 'function') {
+if (checkNativePromise()) {
+  async = useNativePromise();
+} else if (typeof setImmediate === 'function') {
   async = useSetImmediate();
 } else if (typeof process !== 'undefined' && {}.toString.call(process) === '[object process]') {
   async = useNextTick();