In Ember-CLI, transforms are located in app/transforms/name.js

array.js

// app/transforms/array.js
import Ember from 'ember';
import DS from 'ember-data';

export default DS.Transform.extend({
  deserialize: function(value) {
    if (Ember.isArray(value)) {
      return Ember.A(value);
    } else {
      return Ember.A();
    }
  },
  serialize: function(value) {
    if (Ember.isArray(value)) {
      return Ember.A(value);
    } else {
      return Ember.A();
    }
  }
});

object.js

// app/transforms/object.js
import Ember from 'ember';
import DS from 'ember-data';

export default DS.Transform.extend({
  deserialize: function(value) {
    debugger;
    return Ember.Object.create(value);
  },

  serialize: function(value) {
    debugger;
    return JSON.parse(JSON.stringify(value));
  }
});