implement exports, fixes #141

lib/runtime/dart_runtime.js

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 dart_library.library('dart_runtime/dart', null, /* Imports */[
   'dart_runtime/_classes',
   'dart_runtime/_errors',
   'dart_runtime/_generators',
   'dart_runtime/_operations',
   'dart_runtime/_rtti',
@@ skipping 46 matching lines @@
     'virtualField'
   ]);
 
   exportFrom(generators, [
     'syncStar',
     'async',
     'asyncStar'
   ]);
 
   // From dart_utils
-  exportFrom(dart_utils, ['copyProperties', 'instantiate']);
+  exportFrom(dart_utils, ['copyProperties', 'export']);
   // Renames
   exports.defineLazyClass = _export(dart_utils.defineLazy);
   exports.defineLazyProperties = _export(dart_utils.defineLazy);
   exports.defineLazyClassGeneric = _export(dart_utils.defineLazyProperty);
 
   // From operations
   exportFrom(operations, [
     'JsIterator',
     'arity',
     'assert',
@@ skipping 30 matching lines @@
   ]);
 
   // From rtti
   exportFrom(rtti, [
     'fn',
     'realRuntimeType',
     'runtimeType',
   ]);
 
 });