Since translatewiki.net is a common practice for translating gadgets and extensions for mediawiki, it is necessary that the gadget meets the required preparation:

• https://translatewiki.net/wiki/Translating:New_project
• https://translatewiki.net/wiki/Setup_of_a_new_project
• https://translatewiki.net/wiki/Translating:Localisation_for_developers

Current strings: https://gitlab.wikimedia.org/repos/10nm/ultraviolet/-/tree/dev/src/localization

Roadmap

• Convert files for localization to one of the supported formats
• ...
• Create a Phabricator task for translatewiki.net team