New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  baz: "baz"
});

helpers.my-helper.js

import Ember from 'ember';

export function myHelper([path], options={}) {
  let klass = options.class;
  let svg = `<p class="${klass}">${path} (${klass})</p>`;
  return Ember.String.htmlSafe(svg);
}

export default Ember.Helper.helper(myHelper);

templates.application.hbs

Testing

{{my-helper "foo" class=baz}}

twiddle.json

{
  "version": "0.10.3",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "//s3.amazonaws.com/builds.emberjs.com/alpha/ember.debug.js",
    "ember-data": "2.7.0",
    "ember-template-compiler": "//s3.amazonaws.com/builds.emberjs.com/alpha/ember-template-compiler.js"
  },
  "addons": {}
}