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

tests/language/static_const_field_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.
 // Dart test program for testing static const fields.
 
 abstract class Spain {
   static const AG = "Antoni Gaudi";
   static const SD = "Salvador Dali";
 }
 
@@ skipping 18 matching lines @@
   static const architect1 = Spain.AG;
   static const array1 = const <int>[1, 2];
   static const map1 = const {"Monday": 1, "Tuesday": 2, };
 }
 
 class StaticFinalFieldTest {
   static testMain() {
     Expect.equals(15, A.c);
     Expect.equals(8, A.b);
     Expect.equals(5, A.a.n);
-    Expect.equals(true,  8 === A.b);
-    Expect.equals(true,  A.a === A.d);
-    Expect.equals(true,  A.s1 === A.s2);
-    Expect.equals(false, A.s1 === A.s3);
-    Expect.equals(false, A.s1 === A.b);
-    Expect.equals(true,  A.d1 === A.d2);
+    Expect.equals(true, identical(8, A.b));
+    Expect.equals(true, identical(A.a, A.d));
+    Expect.equals(true, identical(A.s1, A.s2));
+    Expect.equals(false, identical(A.s1, A.s3));
+    Expect.equals(false, identical(A.s1, A.b));
+    Expect.equals(true, identical(A.d1, A.d2));
     Expect.equals(true, Spain.SD == "Salvador Dali");
     Expect.equals(true, A.artist2 == "Alberto Giacometti");
     Expect.equals(true, A.architect1 == "Antoni Gaudi");
     Expect.equals(2, A.map1["Tuesday"]);
   }
 }
 
 main() {
   StaticFinalFieldTest.testMain();
 }