ember-cli-rails の Ember.js を 2.18 から 3.4 にアップデート

# install ember-cli
RUN yarn global add ember-cli@3.4.4

# install ember-cli-update
RUN yarn global add ember-cli-update

$ docker-compose run rails bundle

$ docker-compose run rails bash -c "export NPM_TOKEN=XXXXXXXXXX && cd ember/todo-app && yarn"

$ docker-compose run rails bash -c "export NPM_TOKEN=XXXXXXXXXX && cd ember/todo-app && ember-cli-update bootstrap"

% docker-compose run rails bash -c "export NPM_TOKEN=XXXXXXXXXX && cd ember/todo-app && ember-cli-update --to 3.4.4"

? Blueprint updates have been found. Which one would you like to update?
> app, current: 2.18.2, latest: 3.25.3

installing app
  create .editorconfig
  create .ember-cli
  create .eslintrc.js
  create .travis.yml
  create .watchmanconfig
  create README.md
  create app/app.js
  create app/components/.gitkeep
  create app/controllers/.gitkeep
  create app/helpers/.gitkeep
  create app/index.html
  create app/models/.gitkeep
  create app/resolver.js
  create app/router.js
  create app/routes/.gitkeep
  create app/styles/app.css
  create app/templates/application.hbs
  create app/templates/components/.gitkeep
  create config/environment.js
  create config/targets.js
  create ember-cli-build.js
  create .gitignore
  create package.json
  create public/robots.txt
  create testem.js
  create tests/helpers/destroy-app.js
  create tests/helpers/module-for-acceptance.js
  create tests/helpers/start-app.js
  create tests/index.html
  create tests/integration/.gitkeep
  create tests/test-helper.js
  create tests/unit/.gitkeep
  create vendor/.gitkeep
WARNING:
WARNING: The 'package.json' file for the addon at /usr/local/share/.config/yarn/global/node_modules/ember-cli/lib/tasks/server/middleware/tests-server
WARNING:   specifies a missing dependency 'exists-sync'
WARNING: Node v14.16.0 is not tested against Ember CLI on your platform. We recommend that you use the most-recent "Active LTS" version of Node.js. See https://git.io/v7S5n for details.
installing app
  create .editorconfig
  create .ember-cli
  create .eslintignore
  create .eslintrc.js
  create .template-lintrc.js
  create .travis.yml
  create .watchmanconfig
  create README.md
  create app/app.js
  create app/components/.gitkeep
  create app/controllers/.gitkeep
  create app/helpers/.gitkeep
  create app/index.html
  create app/models/.gitkeep
  create app/resolver.js
  create app/router.js
  create app/routes/.gitkeep
  create app/styles/app.css
  create app/templates/application.hbs
  create app/templates/components/.gitkeep
  create config/environment.js
  create config/optional-features.json
  create config/targets.js
  create ember-cli-build.js
  create .gitignore
  create package.json
  create public/robots.txt
  create testem.js
  create tests/helpers/.gitkeep
  create tests/index.html
  create tests/integration/.gitkeep
  create tests/test-helper.js
  create tests/unit/.gitkeep
  create vendor/.gitkeep

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
        new file:   .eslintignore
        modified:   .eslintrc.js
        modified:   .gitignore
        new file:   .template-lintrc.js
        modified:   README.md
        modified:   config/ember-cli-update.json
        new file:   config/optional-features.json
        modified:   config/targets.js
        modified:   package.json
        modified:   testem.js
        new file:   tests/helpers/.gitkeep
        deleted:    tests/helpers/destroy-app.js
        deleted:    tests/helpers/module-for-acceptance.js
        deleted:    tests/helpers/start-app.js

Unmerged paths:
  (use "git restore --staged <file>..." to unstage)
  (use "git add/rm <file>..." as appropriate to mark resolution)
        deleted by us:   .travis.yml

$ docker-compose run rails bash -c "export NPM_TOKEN=XXXXXXXXXX && cd ember/todo-app && ember-cli-update --run-codemods"

? Which blueprint would you like to run codemods for?
> ember-cli

? These codemods apply to your project. Select which ones to run. (Press <space> to select, <a> to toggle all, <i> to invert selection)
❯◯ ember-modules-codemod
 ◯ ember-qunit-codemod
 ◯ ember-test-helpers-codemod
 ◯ es5-getter-ember-codemod
 ◯ notify-property-change
 ◯ qunit-dom-codemod

Running codemod ember-modules-codemod
Running command 1 of 1
Skipping path addon which does not exist.
Skipping path addon-test-support which does not exist.
Skipping path test-support which does not exist.
Skipping path lib which does not exist.
Processing 11 files...
Spawning 7 workers...
Sending 2 files to free worker...
Sending 2 files to free worker...
Sending 2 files to free worker...
Sending 2 files to free worker...
Sending 2 files to free worker...
Sending 1 files to free worker...
All done.
Results:
0 errors
6 unmodified
0 skipped
5 ok
Time elapsed: 1.785seconds

Done! All uses of the Ember global have been updated.
Finished running command 1 of 1
Finished running codemod ember-modules-codemod

diff --git a/ember/todo-app/app/components/todo-item.js b/ember/todo-app/app/components/todo-item.js
index bc28c83..a803fc5 100644
--- a/ember/todo-app/app/components/todo-item.js
+++ b/ember/todo-app/app/components/todo-item.js
@@ -1,12 +1,14 @@
-import Ember from 'ember';
+import { later } from '@ember/runloop';
+import { computed } from '@ember/object';
+import Component from '@ember/component';

-export default Ember.Component.extend({
+export default Component.extend({
   tagName: 'li',
   classNames: ['p-todo-item'],
   classNameBindings: ['isCompleted:p-todo-item__completed'],

   item: null,
-  isCompleted: Ember.computed('item.isCompleted', function () {
+  isCompleted: computed('item.isCompleted', function () {
     return this.get('item.isCompleted');
   }),