This project outputs HTML in which user interface elements are localized to suite the user's preference.
Language-specific content is organized in messages that can be retrieved using their keys.
To avoid redundant record keeping with messages already existing inside mediawiki/wikibase, this project explicitly only deals with the keys, importing the message values from there.
Not all messages existing in mediawiki/wikibase are automatically known to this project. To be able to use a message, make sure to add its key to MessageKey.
In terms of integration with wikibase this leads to a special case: Wikibase reads from this repository's resource.json in order to load the required message keys from Wikibase/MediaWiki's i18n service.
Messages can be used inside component templates by using the Messages mixin.
Components can use messages in their templates by using the message method, and the MESSAGE_KEYS property provided by the mixin, e.g. message( MESSAGE_KEYS.ALIAS_SEPARATOR ).