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+;;; setup-js-mode.el --- rogs default js mode configuration
+;;
+;;; Commentary:
+;;
+;; My default configuration for js mode
+;;
+;;; Code:
+
+;; Associates json-mode to all .eslintrc files
+(add-to-list 'auto-mode-alist '("\\.eslintrc\\'" . json-mode))
+
+;; JS2 mode
+(require 'js2-refactor)
+(require 'xref-js2)
+
+(add-to-list 'auto-mode-alist '("\\.js\\'" . js2-mode))
+(add-to-list 'auto-mode-alist '("\\.js\\'" . rjsx-mode))
+(add-hook 'js2-mode-hook #'js2-refactor-mode)
+(add-hook 'js2-mode-hook #'emmet-mode)
+(setq emmet-expand-jsx-className? t)
+(js2r-add-keybindings-with-prefix "C-c C-f")
+(define-key js2-mode-map (kbd "C-k") #'js2r-kill)
+(define-key js2-mode-map (kbd "C-c ;") #'comment-line)
+(define-key js2-mode-map (kbd "C-c C-;") #'comment-or-uncomment-region)
+
+;; js-mode (which js2 is based on) binds "M-." which conflicts with xref, so
+;; unbind it.
+(define-key js-mode-map (kbd "M-.") nil)
+
+(add-hook 'js2-mode-hook (lambda ()
+  (add-hook 'xref-backend-functions #'xref-js2-xref-backend nil t)))
+
+(setq js2-highlight-level 3)
+
+;; Turn off js2 mode errors & warnings (we lean on eslint/standard)
+(setq js2-mode-show-parse-errors nil)
+(setq js2-mode-show-strict-warnings nil)
+
+;; Tern
+(require 'company)
+(require 'company-tern)
+
+(add-to-list 'company-backends 'company-tern)
+(add-hook 'js2-mode-hook (lambda ()
+                           (tern-mode)
+                           (company-mode)))
+
+;; Disable completion keybindings, as we use xref-js2 instead
+(define-key tern-mode-keymap (kbd "M-.") nil)
+(define-key tern-mode-keymap (kbd "M-,") nil)
+
+;; Indium
+(unless (package-installed-p 'indium)
+  (package-install 'indium))
+(require 'indium)
+(add-hook 'js2-mode-hook #'indium-interaction-mode)
+(define-key js2-mode-map (kbd "C-c i") 'indium-launch)
+
+;; PrettierJS
+(eval-after-load 'js2-mode
+  '(progn
+     (add-hook 'js2-mode-hook #'add-node-modules-path)
+     (add-hook 'js2-mode-hook #'prettier-js-mode)))
+
+(provide 'setup-js-mode)
+;;; setup-js-mode.el ends here