debian-mirror-gitlab/core-js/internals/object-define-property.js
2019-09-25 13:30:05 +05:30

20 lines
805 B
JavaScript

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.github.io/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;
};