| // Copyright (c) 2012, 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. | |
| /** | |
| * Checks to see if the mutation observer API is supported on the current | |
| * platform. | |
| */ | |
| bool _isMutationObserverSupported() => | |
| JS('bool', '!!(window.MutationObserver || window.WebKitMutationObserver)'); |