Custom Angular directive in CoffeeScript, the proper way

my_directive.coffee

class MyDirective
  constructor: (myService) ->
    @controller = MyController
    @controllerAs = myCtrl
  restrict: 'E'
  replace: true
  scope:
    attributeStuff: '='
  link: (scope, element, attr) ->
    // Link stuff

angular.module('my_module').directive 'MyDirective', (myService) ->
  new MyDirective(myService)