Restructured library.

lib/3rdparty/systemjs/babel-helpers/defineEnumerableProperties.js

@@ -0,0 +1,10 @@
+export default (function (obj, descs) {
+  for (var key in descs) {
+    var desc = descs[key];
+    desc.configurable = desc.enumerable = true;
+    if ("value" in desc) desc.writable = true;
+    Object.defineProperty(obj, key, desc);
+  }
+
+  return obj;
+});