infinite load

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  idxs: [1, 2, 3, 4],
});

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

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

Router.map(function() {
  [1, 2, 3, 4].forEach(idx => {
    this.route(`page-${idx}`);
  });
});

export default Router;

templates.application.hbs

welcome<br>
<br>
{{outlet}}
<br><br>
{{#each idxs as |idx|}}
	{{#link-to (concat 'page-' idx)}}
		page {{idx}}<br>
  {{/link-to}}
{{/each}}

click on one top link, it will insert a new { {content-for "body"} }<br>
In a true ember dev environment, it does it without a click, and infinite insert many and many content-for body as soon as the url with wrong content is reached, until it crash or it's killed
<br><br>
unexisting component
{{#each idxs as |idx|}}
	{{#nope-to (concat 'page-' idx)}}
		page {{idx}}<br>
  {{/nope-to}}
{{/each}}
<br><br>

templates.page-1.hbs

page 1 content

templates.page-2.hbs

page 2 content

templates.page-3.hbs

page 3 content

templates.page-4.hbs

page 4 content

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}