Transferred JavaScript config

settings.org

@@ -101,6 +101,34 @@
 * Major modes
 ** Java
 ** JavaScript
+#+BEGIN_SRC emacs-lisp
+  (use-package js2-mode
+    :mode "\\.js\\'"
+    :hook ((js2-mode . js2-imenu-extras-mode)
+	   (js2-mode . (lambda () (add-hook 'xref-backend-functions #'xref-js2-xref-backend nil t))))
+    :config
+    (use-package js2-refactor
+      :hook (js2-mode . js2-refactor-mode)
+      :bind
+      (:map js2-mode-map
+	    ("C-k" . js2r-kill))
+      :config
+      (js2r-add-keybindings-with-prefix "C-c C-r"))
+    (use-package xref-js2
+      :demand t)
+    (define-key js-mode-map (kbd "M-.") nil)
+    (defun rlbr/jump-to-definition ()
+      "Jump to a definition."
+      (interactive)
+      (condition-case-unless-debug nil
+	  (js2-jump-to-definition)
+	(error
+	 (progn
+	   (ignore-errors
+	     (xref-pop-marker-stack))
+	   (xref-find-definitions (xref-backend-identifier-at-point (xref-find-backend)))))))
+    (define-key js-mode-map (kbd "M-.") #'rlbr/jump-to-definition))
+#+END_SRC
 ** Magit
 #+BEGIN_SRC emacs-lisp
   (use-package magit