残りのファイルも module 化した

app/assets/javascripts/todo-app/application.js.es6

@@ -1,12 +1,15 @@
 //= require jquery
 //= require jquery_ujs
-//= require ./environment
 //= require ember
 //= require ember-data
 //= require ember-rails/application
 //= require active-model-adapter
 //
-//= require_tree ./modules
+//= require ./environment
 //= require ./todo-app
 //= require_self
-//= require ./import-modules
+
+
+import TodoApp from 'todo-app/todo-app';
+
+TodoApp.create();

app/assets/javascripts/todo-app/environment.js.es6 → app/assets/javascripts/todo-app/environment.module.es6

@@ -1,7 +1,9 @@
-window.EmberENV = {
+export default {
+  EmberENV: {
     // FEATURES: {},
     // EXTEND_PROTOTYPES: {
     //    Function: false,
     //    Array: true
     // }
+  }
 }

app/assets/javascripts/todo-app/router.module.es6

@@ -0,0 +1,11 @@
+import Ember from 'ember';
+
+const Router = Ember.Router.extend({
+  // location: 'history'
+});
+
+Router.map(function() {
+  this.route('todo-items', { path: '/' });
+});
+
+export default Router;

app/assets/javascripts/todo-app/todo-app.js.es6 → app/assets/javascripts/todo-app/todo-app.module.es6

@@ -1,5 +1,3 @@
-//= require_self
-//= require ./router
 //= require_tree ./adapters
 //= require_tree ./mixins
 //= require_tree ./models
@@ -9,9 +7,17 @@
 //= require_tree ./components
 //= require_tree ./templates
 //= require_tree ./routes
+//= require ./router
+//= require_self
 //
 
-window.TodoApp = Ember.Application.create({
+import Application from 'ember-rails/application';
+import loadInitializers from 'ember/load-initializers';
+
+const TodoApp = Application.extend({
   rootElement: '#todo-app',
   modulePrefix: 'todo-app'
 });
+loadInitializers(TodoApp, 'todo-app');
+
+export default TodoApp;