diff -r 761c0938ed82 -r c1b6db1bdd87 rt/vm/src/main/java/org/apidesign/vm4brwsr/ClosureWrapper.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/ClosureWrapper.java	Tue May 13 11:28:47 2014 +0200
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/ClosureWrapper.java	Thu May 22 22:32:00 2014 +0200
@@ -36,6 +36,7 @@
     private static final String[] ARGS = { 
         "--compilation_level", 
         "SIMPLE_OPTIMIZATIONS", 
+        "--output_wrapper", "(function() {%output%})(this);",
         "--js", "bck2brwsr-raw.js" 
         //, "--debug"
         //, "--formatting", "PRETTY_PRINT"