Version 0.8.10.5

dart/sdk/lib/_internal/lib/js_helper.dart

 // Copyright (c) 2013, 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.
 
 library _js_helper;
 
 import 'dart:collection';
 import 'dart:_foreign_helper' show DART_CLOSURE_TO_JS,
                                    JS,
                                    JS_CALL_IN_ISOLATE,
@@ skipping 1903 matching lines @@
   if (value is List || value == null) return value;
   if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
   propertyTypeCastError(value, property);
 }
 
 voidTypeCheck(value) {
   if (value == null) return value;
   throw new TypeErrorImplementation(value, 'void');
 }
 
+checkMalformedType(value, message) {
+  if (value == null) return value;
+  throw new TypeErrorImplementation.fromMessage(message);
+}
+
 /**
  * Special interface recognized by the compiler and implemented by DOM
  * objects that support integer indexing. This interface is not
  * visible to anyone, and is only injected into special libraries.
  */
 abstract class JavaScriptIndexingBehavior extends JSMutableIndexable {
 }
 
 // TODO(lrn): These exceptions should be implemented in core.
 // When they are, remove the 'Implementation' here.
@@ skipping 68 matching lines @@
 }
 
 /**
  * Error thrown when a runtime error occurs.
  */
 class RuntimeError extends Error {
   final message;
   RuntimeError(this.message);
   String toString() => "RuntimeError: $message";
 }