Emblem.js is a ember friendly templating engine used as an alternative for handlebars.js.
Emblem.js doesn't have any official plugins for emacs. However they recommend to use slim plugins as they are similar.
slim-mode is available on melpa. To install it, run
M-x install-package slim-mode
After installing it, activate
slim-mode by running
Instead of activating manually,
auto-mode-alist can be used to set major modes that needs to activated for files with specific extension. To activate slim-mode for emblem files which will be ending with
(add-to-list 'auto-mode-alist '("\\.\\(em\\|emblem\\)" . slim-mode))
By adding this line to emacs configuration file, slim-mode gets activated for emblem.js files.