New Twiddle

components.my-component1.js

import Ember from 'ember';

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

components.my-component2.js

import Ember from 'ember';

export default Ember.Component.extend({
  init() {
    throw new Error('error1');
  }
});

controllers.application.js

import Ember from 'ember';
import RSVP from 'rsvp';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  init() {
    Ember.onerror = function(error) {
      if (!(error instanceof Error)) {
        console.error('Unexpected error type. Dumping object: ' + JSON.stringify(error));
      }
      
      console.error(error.stack);
      
      // TODO show error dialog and give user option to go back (and reload)
    }; 
    RSVP.on('error', function(reason) {
      console.error('got promise rejection: ' + reason);
    }); 
  }
});

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('r', { path: 'r/:id' });
});

export default Router;

routes.r.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(params) {
    return { component: 'my-component' + params.id };
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

templates.components.my-component1.hbs

1

templates.components.my-component2.hbs

2

templates.r.hbs

{{component model.component}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}