diff --git a/js/private/js_binary.sh.tpl b/js/private/js_binary.sh.tpl
index 0d0e65d57..384e462e1 100644
--- a/js/private/js_binary.sh.tpl
+++ b/js/private/js_binary.sh.tpl
@@ -108,6 +108,8 @@ _exit() {
         rm "$STDOUT_CAPTURE"
     fi
 
+    logf_debug "exit code: %s" "$EXIT_CODE"
+
     exit $EXIT_CODE
 }
 
diff --git a/js/private/test/shellcheck_launcher.sh b/js/private/test/shellcheck_launcher.sh
old mode 100755
new mode 100644
index 030394c28..c21e5bba2
--- a/js/private/test/shellcheck_launcher.sh
+++ b/js/private/test/shellcheck_launcher.sh
@@ -119,6 +119,8 @@ _exit() {
         rm "$STDOUT_CAPTURE"
     fi
 
+    logf_debug "exit code: %s" "$EXIT_CODE"
+
     exit $EXIT_CODE
 }