Tests the effect of es6

Author: hhugo

compiler/lib/config.ml

@@ -103,7 +103,7 @@ module Flag = struct
 
   let auto_link = o ~name:"auto-link" ~default:true
 
-  let es6 = o ~name:"es6" ~default:false
+  let es6 = o ~name:"es6" ~default:true
 
   let load_shapes_auto = o ~name:"load-shapes-auto" ~default:false
 end