All features currently only work in Ember-CLI apps that use classic structure and are a rough first draft with a lot of room for improvements. Pods and addons are not supported yet.
Component and helper autocompletion for inline and sub expressions
Definition providers for (enable features like "Go To Definition" or "Peek Definition"):
Components (in Templates)
Helpers (in Templates)
Models
Transforms
Route autocompletion in link-to
Diagnostics for ember-template-lint (if it is included in a project)