RSVP.resolve now simply uses the internal resolution procedure

lib/rsvp/resolve.js

@@ -5,33 +5,9 @@ function objectOrFunction(x) {
 }
 
 function resolve(thenable) {
-  if (thenable instanceof Promise) {
-    return thenable;
-  }
-
-  var promise = new Promise(function(resolve, reject) {
-    var then;
-
-    try {
-      if ( objectOrFunction(thenable) ) {
-        then = thenable.then;
-
-        if (typeof then === "function") {
-          then.call(thenable, resolve, reject);
-        } else {
-          resolve(thenable);
-        }
-
-      } else {
-        resolve(thenable);
-      }
-
-    } catch(error) {
-      reject(error);
-    }
+  return new Promise(function(resolve, reject) {
+    resolve(thenable);
   });
-
-  return promise;
 }
 
 export { resolve };