Create mock versions set and sort implementations.

dart/frog/leg/lib/js_helper.dart

 // 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.
 
 #library('js_helper');
 
 #import('coreimpl.dart');
 
 #source('date_helper.dart');
 #source('regexp_helper.dart');
@@ skipping 260 matching lines @@
   if (isJsArray(receiver)) {
     checkGrowable(receiver, 'removeLast');
     if (receiver.length === 0) throw new IndexOutOfRangeException(-1);
     return JS('Object', @'$0.pop()', receiver);
   }
   return UNINTERCEPTED(receiver.removeLast());
 }
 
 builtin$filter$1(var receiver, var predicate) {
   checkNull(receiver);
-  if (isJsArray(receiver)) {
-    return JS('Object', @'$0.filter(function(v) { return $1(v) === true; })',
-              receiver, predicate);
-  }
-  return UNINTERCEPTED(receiver.filter(predicate));
+  if (!isJsArray(receiver)) return UNINTERCEPTED(receiver.filter(predicate));
+
+  return Collections.filter(receiver, [], predicate);
 }
 
 
 builtin$get$length(var receiver) {
   checkNull(receiver);
   if (receiver is String || isJsArray(receiver)) {
     return JS('num', @'$0.length', receiver);
   }
   return UNINTERCEPTED(receiver.length);
 }
@@ skipping 506 matching lines @@
   Arrays.copy(from, startFrom, receiver, start, length);
 }
 
 builtin$some$1(receiver, f) {
   checkNull(receiver);
   if (!isJsArray(receiver)) return UNINTERCEPTED(receiver.some(f));
 
   return Collections.some(receiver, f);
 }
 
+builtin$every$1(receiver, f) {
+  if (!isJsArray(receiver)) return UNINTERCEPTED(receiver.every(f));
+
+  return Collections.every(receiver, f);
+}
+
 builtin$sort$1(receiver, compare) {
   checkNull(receiver);
   if (!isJsArray(receiver)) return UNINTERCEPTED(receiver.sort(compare));
 
   DualPivotQuicksort.sort(receiver, compare);
 }
 
 checkNull(object) {
   if (object === null) throw new NullPointerException();
   return object;
@@ skipping 455 matching lines @@
       }
     }
   } else if (JS('bool', @'$0 instanceof RangeError', ex)) {
     var message = JS('String', @'$0.message', ex);
     if (message.contains('call stack')) {
       return new StackOverflowException();
     }
   }
   return ex;
 }