1 var $ = require('../internals/export');
2 var getCompositeKeyNode = require('../internals/composite-key');
3 var getBuiltIn = require('../internals/get-built-in');
4 var create = require('../internals/object-create');
6 var initializer = function () {
7 var freeze = getBuiltIn('Object', 'freeze');
8 return freeze ? freeze(create(null)) : create(null);
11 // https://github.com/tc39/proposal-richer-keys/tree/master/compositeKey
13 compositeKey: function compositeKey() {
14 return getCompositeKeyNode.apply(Object, arguments).get('object', initializer);