a === b -> identical(a, b)

tests/language/function_syntax_test.dart

 // Copyright (c) 2011, 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.
 
 // Tests function statement and expression syntax.
 
 class FunctionSyntaxTest {
 
   static void testMain
 /* /// 00: compile-time error
@@ skipping 424 matching lines @@
     expectEvaluatesTo(false, ()=> false && false);
 
     // Bitwise operations.
     expectEvaluatesTo(3, ()=> 1 | 2);
     expectEvaluatesTo(2, ()=> 3 ^ 1);
     expectEvaluatesTo(1, ()=> 3 & 1);
 
     // Equality.
     expectEvaluatesTo(true, ()=> 1 == 1);
     expectEvaluatesTo(false, ()=> 1 != 1);
-    expectEvaluatesTo(true, ()=> 1 === 1);
-    expectEvaluatesTo(false, ()=> 1 !== 1);
+    expectEvaluatesTo(true, ()=> identical(1, 1));
+    expectEvaluatesTo(false, ()=> !identical(1, 1));
 
     // Relational.
     expectEvaluatesTo(true, ()=> 1 <= 1);
     expectEvaluatesTo(false, ()=> 1 < 1);
     expectEvaluatesTo(false, ()=> 1 > 1);
     expectEvaluatesTo(true, ()=> 1 >= 1);
 
     // Is.
     expectEvaluatesTo(true, ()=> 1 is int);
     expectEvaluatesTo(true, ()=> 1.0 is double);
@@ skipping 164 matching lines @@
 
 }
 
 main
 /* /// 74: compile-time error
 ()
 */ /// 74: continued
  {
   FunctionSyntaxTest.testMain();
 }