ember install the dependency like normal:package.json, and you're ready to roll!typescriptember-cli-typescript-blueprints@types/ember@types/ember-data@types/ember__* – @types/ember__object for @ember/object etc.@types/ember-data__* – @types/ember-data__model for @ember-data/model etc.@types/rsvp@types/ember__test-helperstypes/<app name>/index.d.ts – the location for any global type declarations you need to write for you own application; see Using TS Effectively: Global types for your package for information on its default contents and how to use it effectivelyapp/config/environment.d.ts – a basic set of types defined for the contents of the config/environment.js file in your app; see Environment and configuration typings for details