| var $ = require('../internals/export'); |
| var getCompositeKeyNode = require('../internals/composite-key'); |
| var getBuiltIn = require('../internals/get-built-in'); |
| var create = require('../internals/object-create'); |
| |
| var initializer = function () { |
| var freeze = getBuiltIn('Object', 'freeze'); |
| return freeze ? freeze(create(null)) : create(null); |
| }; |
| |
| // https://github.com/tc39/proposal-richer-keys/tree/master/compositeKey |
| $({ global: true }, { |
| compositeKey: function compositeKey() { |
| return getCompositeKeyNode.apply(Object, arguments).get('object', initializer); |
| } |
| }); |