-var supportsDescriptors = Object.defineProperty && (function () {
- try {
- Object.defineProperty({}, 'x', {});
- return true;
- } catch (e) { /* this is ES3 */
- return false;
- }
-}());
-
-// Define configurable, writable and non-enumerable props
-// if they don't exist.
-var defineProperty;
-if (supportsDescriptors) {
- defineProperty = function (object, name, method, forceAssign) {
- if (!forceAssign && (name in object)) { return; }
- Object.defineProperty(object, name, {
- configurable: true,
- enumerable: false,
- writable: true,
- value: method
- });
- };
-} else {
- defineProperty = function (object, name, method, forceAssign) {
- if (!forceAssign && (name in object)) { return; }
- object[name] = method;
- };
-}
-var defineProperties = function (object, map, forceAssign) {
- for (var name in map) {
- if (ObjectPrototype.hasOwnProperty.call(map, name)) {
- defineProperty(object, name, map[name], forceAssign);
- }
- }
-};
+/* inlined from http://npmjs.com/define-properties */
+var defineProperties = (function (has) {
+ var supportsDescriptors = Object.defineProperty && (function () {
+ try {
+ var obj = {};
+ Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
+ for (var _ in obj) { return false; }
+ return obj.x === obj;
+ } catch (e) { /* this is ES3 */
+ return false;
+ }
+ }());
+
+ // Define configurable, writable and non-enumerable props
+ // if they don't exist.
+ var defineProperty;
+ if (supportsDescriptors) {
+ defineProperty = function (object, name, method, forceAssign) {
+ if (!forceAssign && (name in object)) { return; }
+ Object.defineProperty(object, name, {
+ configurable: true,
+ enumerable: false,
+ writable: true,
+ value: method
+ });
+ };
+ } else {
+ defineProperty = function (object, name, method, forceAssign) {
+ if (!forceAssign && (name in object)) { return; }
+ object[name] = method;
+ };
+ }
+ return function defineProperties(object, map, forceAssign) {
+ for (var name in map) {
+ if (has.call(map, name)) {
+ defineProperty(object, name, map[name], forceAssign);
+ }
+ }
+ };
+}(ObjectPrototype.hasOwnProperty));