debian-mirror-gitlab/core-js/internals/object-get-own-property-descriptor.js

21 lines
1,001 B
JavaScript
Raw Normal View History

2019-09-25 13:30:05 +05:30
var DESCRIPTORS = require('../internals/descriptors');
var propertyIsEnumerableModule = require('../internals/object-property-is-enumerable');
var createPropertyDescriptor = require('../internals/create-property-descriptor');
var toIndexedObject = require('../internals/to-indexed-object');
var toPrimitive = require('../internals/to-primitive');
var has = require('../internals/has');
var IE8_DOM_DEFINE = require('../internals/ie8-dom-define');
var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
// `Object.getOwnPropertyDescriptor` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
exports.f = DESCRIPTORS ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
O = toIndexedObject(O);
P = toPrimitive(P, true);
if (IE8_DOM_DEFINE) try {
return nativeGetOwnPropertyDescriptor(O, P);
} catch (error) { /* empty */ }
if (has(O, P)) return createPropertyDescriptor(!propertyIsEnumerableModule.f.call(O, P), O[P]);
};