+++ /dev/null
-var has = require('../internals/has');
-var ownKeys = require('../internals/own-keys');
-var getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');
-var definePropertyModule = require('../internals/object-define-property');
-
-module.exports = function (target, source) {
- var keys = ownKeys(source);
- var defineProperty = definePropertyModule.f;
- var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;
- for (var i = 0; i < keys.length; i++) {
- var key = keys[i];
- if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
- }
-};