Restructured library.

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

@@ -0,0 +1,14 @@
+export default (function (obj, defaults) {
+  var keys = Object.getOwnPropertyNames(defaults);
+
+  for (var i = 0; i < keys.length; i++) {
+    var key = keys[i];
+    var value = Object.getOwnPropertyDescriptor(defaults, key);
+
+    if (value && value.configurable && obj[key] === undefined) {
+      Object.defineProperty(obj, key, value);
+    }
+  }
+
+  return obj;
+});