We've released version 0.3.0 of WVUI earlier today.
One of the agreements from Vue.js developer summit  organized by the
Design System team has been to start a new library and repository next with
all other technical decisions made, a.o. being based on Vue 3 or no
support to IE 11. With this email we want to clarify upfront why we've
merged two more component additions (progress-bar and toggle-button)
succeeding the summit.
Reasons was mainly to finalize the already in-flight work by volunteer
Additionally to this, all other components merged since v0.2.0 and before the
summit – checkbox, dropdown and options-menu – are part of this
release. Same goes
for further improvements for the most important in-production use case,
Desktop Improvements project's Typeahead Search feature .
We'll discontinue major additions to WVUI from this release on besides
bug fixes and
will focus our work on the coming library.
Thanks to volunteer DannyS712 for all contributions! And to Nikki
Nikkhoui for the
continued build step support and James Forrester to get release out of the door
during after hours.
Find interactive demos hosted on doc.wikimedia.org  and the additional
improvements since v0.2.0 in the full changelog .
If you have any further questions please reach out to
We've released version 0.42.0 of the OOUI library* yesterday.
It's going to rollout with normal train next Tuesday, 24 August 2021.
Highlights in this release:
- Removal of code fragments for browsers, that were taken out of basic
support, most of those affected released before 2013! . Removal
will directly results in a small performance gain for all other users.
This is nominally a breaking change. If you need to continue to
support those browsers in your environment, please stick with an
- Upgraded underlying libraries to jQuery v3.6.0, up from v3.5.1 and
OOjs to v6.0.0, up from v5.0.0. This goes hand-in-hand with similar
upgrade in MediaWiki core. Both updates above are considered breaking
changes. Please carefully test if they affect your code.
- Two new icons, 'share' and 'ocr' have become part of the library and
the WikimediaUI design system.
- Addition of RequiredElement mixin, already added in v0.41.1
Thanks especially to Thiemo Kreuz and volunteer DannyS712 on improving
the documentation and Umherirrender for continuous code improvement
You can find details on additional new features, code-level, styling
and interaction design amendments, and all improvements since v0.41.0
in the full changelog .
If you have any further queries or need help dealing with breaking
changes, please reach out to me.
As always, interactive demos  and library documentation is
available on mediawiki.org , there is comprehensive generated
code-level documentation and interactive demos and tutorials hosted on
* Obligatory to say, no, this is not the answer to Everything. That
will probably be v42 of the future Vue.js based user-interface
components library .
OOUI version: 0.42.0
MediaWiki version: 1.37.0-wmf.20
Date of deployment to production: Regular train, starting Tuesday 24 August
 - https://phabricator.wikimedia.org/T266866
 - https://gerrit.wikimedia.org/g/oojs/ui/+/v0.42.0/History.md
 - https://doc.wikimedia.org/oojs-ui/master/demos/#widgets-mediawiki-vector-ltr
 - https://www.mediawiki.org/wiki/OOUI
 - https://doc.wikimedia.org/oojs-ui/master/
 - https://phabricator.wikimedia.org/T288980
With excitement we're sharing today that Vue.js is Wikimedia
framework for use with MediaWiki.
The evaluation of front-end frameworks officially started mid 2019, as
part of the Platform Evolution program’s goal to evolve our technology
platform and development processes to empower the Wikimedia
The corresponding Technical RFC was successfully resolved in March
2020. As this framework selection is a wide-ranging, long-term
decision, a dedicated group, the Front-end Architecture Working
Group, was established to drive the technology comparison and the
final recommendation. Besides the resolved RFC the outcome was to
build and test developer experience in a pilot project.
The selected pilot was within the Desktop Improvements project with
its new Vue.js-based TypeaheadSearch feature that allows for providing
additional context while searching. Since its introduction in March
2021 the new TypeaheadSearch component has been the default across
15 wikis of varying sizes and has received positive user feedback.
A final developer satisfaction survey was completed to gain further
information on the developer experience. The survey results emphasized
“a positive light on the future of working with Vue.js”. And “[t]he
engineers felt optimistic about the future and confident in
recommending it for adoption across all our teams.”
The pilot gave us confidence in the recommendation to adopt Vue.js and
we are moving into further implementation of Vue.js tooling and
product migration planning.
To support further efforts, the Wikimedia Foundation has established
the Wikimedia Design System team, which I'm proudly part of. Our
continued work and upcoming priorities include:
- Preparing a shared Vue.js user-interface components library
- Deciding on Vue 2 or Vue 3 including transition path
- Figuring out how the components library will be built and
distributed in and beyond MediaWiki
You can find more of the ongoing work on Phabricator.
For full transparency, we've carried that knowledge with us for some
time already, but were prioritizing progressing integration, annual
planning and our internal All-hands conference to finally arrive at
this announcement today.
I'd like to thank a number of folks involved in leading to this, all
Front-end Architecture Working Group members, especially colleagues
Eric Gardner & Roan Kattouw for driving the RFC, the Readers Web team
for undergoing as pilot implementers and especially our former
colleague Stephen Niedzielski who was central to making it a success,
Wikimedia Deutschland for numerous insights through their Vue.js
experience, current Design System team members responsible for further
progress, all Movement volunteers involved in both providing feedback
to the pilot and contributing to development and Product & Tech
department leadership for their strong support of this wide-reaching
Wikimedia Design System
1 Montgomery Street
San Francisco, CA 94104