Variable: js-syntactic-mode-name
js-syntactic-mode-name is a variable defined in js.el.gz.
Value
t
Documentation
If non-nil, print enabled syntaxes in the mode name.
Probably introduced at or before Emacs version 27.1.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/js.el.gz
;;; Syntax extensions
(defvar js-syntactic-mode-name t
"If non-nil, print enabled syntaxes in the mode name.")