Ember.ObjectController and Ember.ArrayController extracted as an standalone addon.
Run ember install ember-legacy-controllers and you're good to go
Import the classes from the addon and extend them as with the old Ember.ArrayController
and Ember.ObjectController
// app/controllers/posts.js
import ArrayController from 'ember-legacy-controllers/array'
export default ArrayController.extend({
// ...
})// app/controllers/post.js
import ObjectController from 'ember-legacy-controllers/object'
export default ObjectController.extend({
// ...
})