The tilt template for Ember specified ES6.

Add this line to your application's Gemfile:

gem 'ember-es6_template'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ember-es6_template

Sprockets.register_engine '.es6', Ember::ES6Template::ES6
# Sprockets.register_engine '.es6', Ember::ES6Template::ES6Module # Alternatively, you can use module tranpilation.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request