Is your feature request related to a problem? Please describe
In my component's props TS interface, I can use JSDoc comments to set the description, and can even use the @default tag to describe the default value 💯
However, nothing happens when I use the @deprecated tag.

Describe the solution you'd like
Some ideas:

• It would be nice i

By default ember-cli updates a number of the "app trees" to be from tests/dummy when developing an addon locally. We do this for app, styles, templates, public, and tests trees (handled inside lib/broccoli/ember-addon.js).

Unfortunately, we do not forward the apps vendor tree to tests/dummy/. This means that our addon's treeForVendor is called, but then subsequently clobbered by the "apps

Relevant conversation here: hjdivad/ember-m3#807

It got lost early in some v4 release candidate. Original content could be found here: https://github.com/kaliber5/ember-bootstrap/blob/b711738bba95fd9523e573e5e314f4cf7257f93f/addon/components/base/bs-button.js#L183-L191 It could be used as a starter.

Reported by @rwwagner90 here: kaliber5/ember-bootstrap#1110 (comment)