Route named "merge"

application.controller.js

import Ember from 'ember';

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

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  actions: {
   	goToMergeRoute() {
    	this.transitionTo('someroute.foo.merge') 
    }
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<button {{action 'goToMergeRoute'}}>Goto Merge route</button>
<br>
{{outlet}}
<br>
<br>

router.js

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

var Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('someroute', function() {
    this.route('foo', function() {
      this.route('merge')
    })
  })
});

export default Router;

twiddle.json

{
  "version": "0.4.16",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "beta",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.1.0/ember-data.js",
    "ember-template-compiler": "beta"
  }
}