New Twiddle

components.menu-item.js

import Ember from 'ember';
import ActiveLinkMixin from 'ember-cli-active-link-wrapper/mixins/active-link';

const { Component } = Ember;

export default Component.extend(ActiveLinkMixin, {

  tagName: 'li'
  
});

controllers.application.js

import Ember from 'ember';

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

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('first');
  this.route('second');
  this.route('third');
});

export default Router;

routes.first.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.second.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.third.js

import Ember from 'ember';

export default Ember.Route.extend({
  
  actions: {
    willTransition(transition) {
      this.transitionTo('first');
    }
  }
  
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.active {
  color: red;
}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<ul>
	{{menu-item link="first" linkName="first"}}
  {{menu-item link="second" linkName="second"}}
  {{menu-item link="third" linkName="third"}}
</ul>
<br>
<ul>
	{{#active-link}}
  	{{link-to "first" "first"}}
	{{/active-link}}
  {{#active-link}}
  	{{link-to "second" "second"}}
	{{/active-link}}
  {{#active-link}}
  	{{link-to "third" "third"}}
	{{/active-link}}
</ul>
<br>
{{outlet}}
<br>
<br>

templates.components.menu-item.hbs

{{#link-to link}}
	<span>{{linkName}}</span>
{{/link-to}}

templates.first.hbs

first

templates.second.hbs

second

templates.third.hbs

third

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {
    "ember-cli-active-link-wrapper": "0.3.2"
  }
}