anchor.diff:    void emitMakeConstantListIfNotEmitted(CodeBuffer buffer) {
       if (hasMakeConstantList) return;
       hasMakeConstantList = true;
  -    jsAst.Expression value = new jsAst.Assignment(
  -            new jsAst.PropertyAccess.field(
  -                new jsAst.VariableUse(namer.isolateName),
  -                makeConstListProperty),
  -            js('''function(list) {
  -                    list.immutable\$list = $initName;
  -                    list.fixed\$length = $initName;
  -                    return list;
  -                  }'''));
  -    buffer.write(jsAst.prettyPrint(value, compiler));
  +    buffer.write(
  +        jsAst.prettyPrint(
  +            js.statement(r'''#.# = function(list) {
  +                                     list.immutable$list = #;
  +                                     list.fixed$length = #;
  +                                     return list;
  +                                   }''',
  +                         [namer.isolateName, makeConstListProperty, initName,
  +                          initName]),
  +            compiler));
       buffer.write(N);
     }
   
  
positive.code:     // isolateProperties themselves.
      return js('''
        function (oldIsolate) {
          var isolateProperties = oldIsolate.${namer.isolatePropertiesName};
          function Isolate() {
            var hasOwnProperty = Object.prototype.hasOwnProperty;
            for (var staticName in isolateProperties)
  
negative.code:         }
          Isolate.prototype = oldIsolate.prototype;
          Isolate.prototype.constructor = Isolate;
          Isolate.# = isolateProperties;
          if (#)
            Isolate.# = oldIsolate.#;
          if (#)
            Isolate.# = oldIsolate.#;
          return Isolate;
        }''',
          [namer.isolatePropertiesName, namer.isolatePropertiesName,
           needsDefineClass, finishClassesProperty, finishClassesProperty,
           hasMakeConstantList, makeConstListProperty, makeConstListProperty ]);
    }
  
    jsAst.Fun get lazyInitializerFunction {
  