check hasDefinePropertiesPrototype. Relevant to cujojs#29

object.js

@@ -131,6 +131,9 @@ define(function (require) {
  'object-defineproperties-dom': function () {
  return doc && hasDefineProperties(testEl);
  },
+ 'object-defineproperties-prototype': function () {
+ return hasDefinePropertiesPrototype(function () {});
+ },
  'object-getownpropertydescriptor-obj': function () {
  return hasGetOwnPropertyDescriptor({});
  },
@@ -196,6 +199,10 @@ define(function (require) {
  ? useNativeForDom(Object.defineProperties, defineProperties)
  : defineProperties;
  }
+ else if (!has('object-defineproperties-prototype')) {
+ Object.defineProperties = shims.defineProperties
+ = defineProperties;
+ }
 
  if (!has('object-defineproperty-obj')) {
  // check if dom has it (IE8)
@@ -245,6 +252,17 @@ define(function (require) {
  }
  }
 
+ function hasDefinePropertiesPrototype(fn) {
+ if (('defineProperties' in Object)) {
+ try {
+ // test it
+ Object.defineProperties(fn, { 'prototype': { value: { test: true } } })
+ return (new fn).test === true && fn.prototype.test === true;
+ }
+ catch (ex) { /* squelch */ }
+ }
+ }
+
  function hasGetOwnPropertyDescriptor (object) {
  if (('getOwnPropertyDescriptor' in Object)) {
  object['sentinel3'] = true;