diff --git a/jscomp/common/ext_log.ml b/jscomp/common/ext_log.ml
index 1a56351b406..ab58b99adb7 100644
--- a/jscomp/common/ext_log.ml
+++ b/jscomp/common/ext_log.ml
@@ -26,7 +26,7 @@ type 'a logging = ('a, Format.formatter, unit, unit, unit, unit) format6 -> 'a
 
 (* TODO: add {[@.]} later for all *)
 let dwarn ?(__POS__ : (string * int * int * int) option) f =
-  if Js_config.get_diagnose () then
+  if !Js_config.diagnose then
     match __POS__ with
     | None -> Format.fprintf Format.err_formatter ("WARN: " ^^ f ^^ "@.")
     | Some (file, line, _, _) ->
diff --git a/jscomp/common/js_config.ml b/jscomp/common/js_config.ml
index 6f2a2c99779..0b479fa4a77 100644
--- a/jscomp/common/js_config.ml
+++ b/jscomp/common/js_config.ml
@@ -34,12 +34,6 @@ let directives = ref []
 let cross_module_inline = ref false
 let diagnose = ref false
 
-let get_diagnose () =
-  !diagnose
-#ifndef RELEASE
-  || Sys.getenv_opt "RES_DEBUG_FILE" <> None
-#endif
-
 (* let (//) = Filename.concat *)
 
 (* let get_packages_info () = !packages_info *)
diff --git a/jscomp/common/js_config.mli b/jscomp/common/js_config.mli
index 6fc7a00199f..f5df0349d3b 100644
--- a/jscomp/common/js_config.mli
+++ b/jscomp/common/js_config.mli
@@ -52,9 +52,6 @@ val cross_module_inline : bool ref
 val diagnose : bool ref
 (** diagnose option *)
 
-val get_diagnose : unit -> bool
-(* val set_diagnose : bool -> unit  *)
-
 val no_builtin_ppx : bool ref
 (** options for builtin ppx *)
 
diff --git a/jscomp/core/bs_cmi_load.ml b/jscomp/core/bs_cmi_load.ml
index 7736bb782fb..6cc14490d56 100644
--- a/jscomp/core/bs_cmi_load.ml
+++ b/jscomp/core/bs_cmi_load.ml
@@ -47,10 +47,10 @@ let load_cmi ~unit_name : Env.Persistent_signature.t option =
       let {Cmij_cache.module_names; module_data} = Lazy.force cmi_cache in
       match Ext_string_array.find_sorted module_names unit_name with
       | Some index ->
-        if Js_config.get_diagnose () then
+        if !Js_config.diagnose then
           Format.fprintf Format.err_formatter ">Cmi: %s@." unit_name;
         let cmi = Cmij_cache.unmarshal_cmi_data module_data.(index) in
-        if Js_config.get_diagnose () then
+        if !Js_config.diagnose then
           Format.fprintf Format.err_formatter "<Cmi: %s@." unit_name;
         Some {filename = Sys.executable_name ; 
               cmi }
diff --git a/jscomp/core/js_cmj_load_builtin_unit.ml b/jscomp/core/js_cmj_load_builtin_unit.ml
index 8e4a6389001..156eccfa523 100644
--- a/jscomp/core/js_cmj_load_builtin_unit.ml
+++ b/jscomp/core/js_cmj_load_builtin_unit.ml
@@ -39,7 +39,7 @@ let load_builin_unit (unit_name : string) : Js_cmj_format.cmj_load_info =
   let { Cmij_cache.module_names; module_data } = Lazy.force cmj_cache in
   match Ext_string_array.find_sorted module_names unit_name with
   | Some i ->
-      if Js_config.get_diagnose () then
+      if !Js_config.diagnose then
         Format.fprintf Format.err_formatter ">Cmj: %s@." unit_name;
       let cmj_table : Js_cmj_format.t =
         let { Cmij_cache.values; pure } =
@@ -53,7 +53,7 @@ let load_builin_unit (unit_name : string) : Js_cmj_format.cmj_load_info =
         }
         (* FIXME when we change it *)
       in
-      if Js_config.get_diagnose () then
+      if !Js_config.diagnose then
         Format.fprintf Format.err_formatter "<Cmj: %s@." unit_name;
       {
         package_path = Filename.dirname (Filename.dirname Sys.executable_name);
diff --git a/jscomp/core/js_pass_debug.ml b/jscomp/core/js_pass_debug.ml
index 046a9521ff9..3970aa3fbd8 100644
--- a/jscomp/core/js_pass_debug.ml
+++ b/jscomp/core/js_pass_debug.ml
@@ -35,7 +35,7 @@ let log_counter = ref 0
 let dump name (prog : J.program) =
   begin
     let () = 
-      if Js_config.get_diagnose ()
+      if !Js_config.diagnose
       then 
         begin
           incr log_counter ; 
diff --git a/jscomp/core/lam_compile_main.ml b/jscomp/core/lam_compile_main.ml
index 8a0d3a4ea2e..e8fe9b6cee5 100644
--- a/jscomp/core/lam_compile_main.ml
+++ b/jscomp/core/lam_compile_main.ml
@@ -208,7 +208,7 @@ let compile
 #ifndef RELEASE
 let () =
   Ext_log.dwarn ~__POS__ "After coercion: %a@." Lam_stats.print meta ;
-  if Js_config.get_diagnose () then
+  if !Js_config.diagnose then
     let f =
       Ext_filename.new_extension !Location.input_name  ".lambda" in
     Ext_fmt.with_file_as_pp f begin fun fmt ->
diff --git a/jscomp/core/lam_util.ml b/jscomp/core/lam_util.ml
index fe2522b6575..88a5614cdd8 100644
--- a/jscomp/core/lam_util.ml
+++ b/jscomp/core/lam_util.ml
@@ -217,7 +217,7 @@ let dump ext  lam =
 #else
 let log_counter = ref 0
 let dump ext  lam = 
-  if Js_config.get_diagnose ()
+  if !Js_config.diagnose
   then 
     (* ATTENTION: easy to introduce a bug during refactoring when forgeting `begin` `end`*)
     begin 
diff --git a/scripts/dbg b/scripts/dbg
deleted file mode 100755
index a596910b350..00000000000
--- a/scripts/dbg
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env node
-var cp = require("child_process");
-var path = require("path");
-
-var file = process.argv[2];
-console.log(file);
-var fmt = path.parse(file);
-
-process.env.RES_DEBUG_FILE = 1;
-var ninja = path.join(__dirname, "..", process.platform, "ninja.exe");
-cp.execSync(`touch ${file} && ${ninja} ${fmt.dir}/${fmt.name}.cmj`, {
-  stdio: [0, 1, 2]
-});