It was originally added in I661493ab2f in 2013, to hide errors that
would appear when templates containing re-uses of references were
previewed separately from the rest of the page.
It has been made unnecessary when VisualEditor was changed to render
wikitext fragments (such as previewing templates) using Parsoid rather
than legacy parser, in 2014: I8a61d2fab8.
However it wasn't removed then, and then Ide82c96db4 changed the
selector and made it more difficult to understand its purpose (and
caused T301845, seven years later), and then Iba0f25b3eb / I39936ed83d
moved it to this repo in 2016, and then everyone forgot about it.
Bug: T53141
Bug: T301845
Change-Id: I7ac5ed6544575877fe1b6f09951e58b35df9648d
This code has been developed over three years now in the repo of MediaWiki's
integration of VisualEditor. It has grown and developed significantly during
that time, but now is pretty stable. A number of hacks inside the MediaWiki-
VisualEditor code base have been used to prevent this code from being loaded
on wikis where the Cite extension is not deployed, but this state of affairs
is and always was meant to be temporary.
This code is under the MIT licence which is a tad messy, but not impossible.
It's clearly labelled as such. The list of authors has been updated to take
into account the influx of new functionality.
Bug: T41621
Bug: T104928
Change-Id: I39936ed83d5a60471a0a75da753f498e80aef234
