rjsx-mode supports only emacs24.4+

init.el

@@ -29,6 +29,9 @@
                    (*linux* nil)
                    (t nil)))
 
+(setq *emacs24old*  (or (and (= emacs-major-version 24) (= emacs-minor-version 3))
+                        (not *emacs24*)))
+
 ;; *Message* buffer should be writable in 24.4+
 (defadvice switch-to-buffer (after switch-to-buffer-after-hack activate)
   (if (string= "*Messages*" (buffer-name))

lisp/init-elpa.el

@@ -13,7 +13,6 @@ But you may use safer HTTPS instead.")
     color-theme
     ivy
     js-doc
-    rjsx-mode
     counsel
     wgrep
     robe
@@ -236,7 +235,8 @@ ARCHIVE is the string name of the package archive.")
 (require-package 'multi-term)
 (require-package 'js-doc)
 (require-package 'js2-mode)
-(require-package 'rjsx-mode)
+(unless *emacs24old*
+  (require-package 'rjsx-mode))
 (require-package 's)
 ;; js2-refactor requires js2, dash, s, multiple-cursors, yasnippet
 ;; I don't use multiple-cursors, but js2-refactor requires it

lisp/init-javascript.el

@@ -284,9 +284,10 @@ Merge RLT and EXTRA-RLT, items in RLT has *higher* priority."
  ((not *no-memory*)
   (setq auto-mode-alist (cons '("\\.ts\\'" . js2-mode) auto-mode-alist))
   (setq auto-mode-alist (cons '("\\.js\\(\\.erb\\)?\\'" . js2-mode) auto-mode-alist))
-  (add-to-list 'auto-mode-alist '("components\\/.*\\.js\\'" . rjsx-mode))
+  (unless *emacs24old*
+    (add-to-list 'auto-mode-alist '("\\.jsx\\'" . rjsx-mode))
+    (add-to-list 'auto-mode-alist '("components\\/.*\\.js\\'" . rjsx-mode)))
   (add-to-list 'auto-mode-alist '("\\.mock.js\\'" . js-mode))
-  (add-to-list 'auto-mode-alist '("\\.jsx\\'" . rjsx-mode))
   (add-to-list 'interpreter-mode-alist (cons "node" 'js2-mode)))
  (t
   (setq auto-mode-alist (cons '("\\.js\\(\\.erb\\)?\\'" . js-mode) auto-mode-alist))