1. Use `this.` instead of `{{action}}` where applicable
2. Use `{{fn}}` instead of `@actionParam` where applicable
3. Use non-`@` versions of class/type/tabindex/aria-controls/aria-expanded
4. Remove `btn` class (it's added automatically to all DButtons)
5. Remove `type="button"` (it's the default)
6. Use `concat-class` helper
Also, the change in insert-hyperlink (from `this.linkUrl.indexOf("http") === -1` to `!this.linkUrl.startsWith("http")`) was intentional fix: we don't want to prevent users from looking up topics with http in their titles.
```sh
npx ember-holy-futuristic-template-namespacing-batman-codemod ensure-template-only-has-backing-class
```
We would like to colocate templates but, when no backing class exists, colocated templates extend `templateOnly` instead of `Ember.Component`. Generating the backing class helps avoid any behavioral changes.
We can also run the `tagless-ember-components-codemod` to put the tags into the templates at which point we could convert these back to template-only components.
String.prototype.substr() is deprecated so we replace it with String.prototype.slice() which works similarily but isn't deprecated.
Signed-off-by: Tobias Speicher <rootcommander@gmail.com>
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
