composable test

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  init(){
    this.setProperties({
      ids: [1, 3, 5],
      objects: [{id:1, label:'one'}, {id:2, label:'two'}, {id:3, label:'three'}, {id:4, label:'four'}, {id:5, label:'five'}]
    });
  },
  
  actions:{
    isIn(arr, val){
      console.log(val);
      return arr.includes(val);
    }
  }
});

helpers.includes.js

import Ember from 'ember';

export function includes([arr, obj]/*, hash*/) {
  console.log(obj);
  return arr.includes(obj);
}

export default Ember.Helper.helper(includes);

templates.application.hbs

<ol>
{{#each (filter-by "id" (r 'includes' ids) objects) as |object|}}
<li>{{object.label}}</li>
{{/each}}
</ol>

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",
    "ember-composable-helpers": "2.0.1",
    "ember-reactive-helpers": "0.4.0"
  }
}