Module Js_of_ocaml_compiler__Pure_fun
val pure_expr : Js_of_ocaml_compiler.Code.Var.Set.t -> Js_of_ocaml_compiler.Code.expr -> boolval pure_instr : Js_of_ocaml_compiler.Code.Var.Set.t -> Js_of_ocaml_compiler.Code.instr -> boolval f : Js_of_ocaml_compiler.Code.program -> Js_of_ocaml_compiler.Code.Var.Set.t