Do Opera extensions support notifications and background mode?

Question

Does Opera api support notifications and background in the manifest file? When I load extension, I get:

There were warnings when trying to install this extension: Permission 'notifications' is unknown or URL pattern is malformed. Permission 'background' is unknown or URL pattern is malformed.

How to implement desktop notifications in a Opera extension? Does Opera support background apps/extensions mode like Google Chrome?

Thank you for any help!

Answer 1

Opera doesn't support desktop notifications and background mode at this point.
https://twitter.com/andreasbovens/status/428461696584519680