--- /dev/null
+'use strict';
+// https://github.com/tc39/proposal-iterator-helpers
+var $ = require('../internals/export');
+var anInstance = require('../internals/an-instance');
+var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
+var has = require('../internals/has');
+var wellKnownSymbol = require('../internals/well-known-symbol');
+var AsyncIteratorPrototype = require('../internals/async-iterator-prototype');
+var IS_PURE = require('../internals/is-pure');
+
+var TO_STRING_TAG = wellKnownSymbol('toStringTag');
+
+var AsyncIteratorConstructor = function AsyncIterator() {
+ anInstance(this, AsyncIteratorConstructor);
+};
+
+AsyncIteratorConstructor.prototype = AsyncIteratorPrototype;
+
+if (!has(AsyncIteratorPrototype, TO_STRING_TAG)) {
+ createNonEnumerableProperty(AsyncIteratorPrototype, TO_STRING_TAG, 'AsyncIterator');
+}
+
+if (!has(AsyncIteratorPrototype, 'constructor') || AsyncIteratorPrototype.constructor === Object) {
+ createNonEnumerableProperty(AsyncIteratorPrototype, 'constructor', AsyncIteratorConstructor);
+}
+
+$({ global: true, forced: IS_PURE }, {
+ AsyncIterator: AsyncIteratorConstructor
+});