Moment.js is not inlcuded by default with Ember-CLI, so if you want to create a helper to generate beautifully formatted dates, then you need to make sure to install the ember-cli-addon for it.
Here is the command:
$ npm install --save-dev ember-cli-moment
You will also have to update your jshintrc to inlcude “moment” in the predec section. However, I just discovered the ember-moment addon that creates helpers for you to use so you do not need to create your own.
$ npm install --save-dev ember-moment
You can check both out on ember addons website here, the link takes you to all packages that involve moment or you can search by the names in the commands above.