--- /dev/null
+var DESCRIPTORS = require('../internals/descriptors');
+var IE8_DOM_DEFINE = require('../internals/ie8-dom-define');
+var anObject = require('../internals/an-object');
+var toPrimitive = require('../internals/to-primitive');
+
+var nativeDefineProperty = Object.defineProperty;
+
+// `Object.defineProperty` method
+// https://tc39.es/ecma262/#sec-object.defineproperty
+exports.f = DESCRIPTORS ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
+ anObject(O);
+ P = toPrimitive(P, true);
+ anObject(Attributes);
+ if (IE8_DOM_DEFINE) try {
+ return nativeDefineProperty(O, P, Attributes);
+ } catch (error) { /* empty */ }
+ if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
+ if ('value' in Attributes) O[P] = Attributes.value;
+ return O;
+};