Configring node js.

node_modules/core-js/modules/_iter-create.js

@@ -0,0 +1,13 @@
+'use strict';
+var create         = require('./_object-create')
+  , descriptor     = require('./_property-desc')
+  , setToStringTag = require('./_set-to-string-tag')
+  , IteratorPrototype = {};
+
+// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
+require('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function(){ return this; });
+
+module.exports = function(Constructor, NAME, next){
+  Constructor.prototype = create(IteratorPrototype, {next: descriptor(1, next)});
+  setToStringTag(Constructor, NAME + ' Iterator');
+};