jscs.el helps consistent JavaScript editing using JSCS.

• Apply indentation rules from JSCS config file
• Run jscs --fix
• Support all types of JSCS config files

• Emacs 24 or later
• JSCS 2.0.0 or later

Make sure that node and jscs commands can be executed from Emacs: M-! node --version and M-! jscs --version.

jscs.el is available on MELPA.

To apply JSCS indentation rules to JavaScript or JSON modes, add the following code into your .emacs:

(add-hook 'js-mode-hook #'jscs-indent-apply)
(add-hook 'js2-mode-hook #'jscs-indent-apply)
(add-hook 'json-mode-hook #'jscs-indent-apply)

To run jscs --fix interactively, run M-x jscs-fix.

To run jscs --fix on JavaScript modes when saving, add the following code into your .emacs:

(add-hook 'js-mode-hook #'jscs-fix-run-before-save)
(add-hook 'js2-mode-hook #'jscs-fix-run-before-save)

• validateIndentation
  • indent-tabs-mode
  • js-indent-level in js-mode or json-mode
  • js2-basic-offset in js2-mode
• maximumLineLength
  • tab-width