The mediawiki.misc-authed-ooui module is described as
- .. are never loaded when viewing or editing wiki pages.
- .. are only used by logged-in users.
- .. depend on oojs-ui-core.
- .. contain UI initialisation code (e.g. no public module exports, because requiring or depending on this bundle is awkward)
The mediawiki.special.import is small enough (1514 minified characters currently, well under 5kb), is only used on Special:Import (criteria 1), depends on oojs-ui-core (depends on mediawiki.widgets -> oojs-ui-widgets -> oojs-ui-core), and contains only UI initialisation code.