New Twiddle

ability\.js

import EmberObject from '@ember/object';
import { camelize } from '@ember/string';

export default EmberObject.extend({
  model: null,

  /**
   * Parse propertyName into ability property
   * eg: `createProject` will be parsed to `canCreateProject` using default definition
   * @public
   * @param  {[String]} propertyName [description]
   * @return {[String]}              [description]
   */
  parseProperty(propertyName) {
    return camelize(`can-${propertyName}`);
  },

  /**
   * Get parsed ability value based on propertyName
   * eg: `createProject` will return a value for `canCreateProject`
   * using default `parseProperty` definition
   * @private
   * @param  {String} propertyName property name, eg. `createProject`
   * @return {*}                   value of parsed `propertyName` property
   */
  getAbility(propertyName) {
    return this.get(this.parseProperty(propertyName));
  }
});

controllers.application\.js

import Controller from '@ember/controller';
import Resource from '../resource';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';

  resource = Resource.create();
  
}

resource\.js

import Ability from './ability';

export default class Resource extends Ability {

  get canDelete() {
    return true;
  }
  
  unknownProperty(key){
    // figure out the right key here - maybe we reverse parse it from the can service?
    // and then call this.permissions.can(stringFromKey);
    return `${key} is the key`;
  }

}

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>
<br>
<br>
{{this.resource.canDelete}}
<br>
{{this.resource.notAKey}}
<br>
{{outlet}}
<br>
<br>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}