Js_of_ocaml_compiler.Js_traverse
class type mapper = object ... end
class type iterator = object ... end
class subst : (Javascript.ident -> Javascript.ident) -> object ... end
type block =
| Catch of Javascript.formal_parameter
| Params of Javascript.formal_parameter_list
| Normal
class type freevar = object ... end
class rename_variable : mapper
class compact_vardecl : object ... end