This package is abandoned and no longer maintained. The author suggests using the oojs/oojs-ui package instead.

Provides library of common widgets, layouts, and windows.

Installs: 21

Dependents: 0

Suggesters: 0

Security: 0

Stars: 56

Watchers: 12

Forks: 27


v0.48.2 2023-10-24 20:09 UTC

This package is auto-updated.

Last update: 2023-11-27 12:12:29 UTC


npm Packagist


OOUI is a component-based JavaScript UI library. Key features:

  • Common widgets, layouts, and dialogs
  • Classes, elements, and mixins to create custom interfaces
  • Internationalization and localization, like right-to-left (RTL) languages support
  • Theme-ability
  • Built-in icons
  • Accessibility features

It is the standard library for Web products at the Wikimedia Foundation, having been originally created for use by VisualEditor.

Quick start

The library is available on npm. To install:

$ npm install oojs-ui

Once installed, include the following scripts and styles to get started:

<script src="node_modules/jquery/dist/jquery.min.js"></script>
<script src="node_modules/oojs/dist/oojs.min.js"></script>
<script src="node_modules/oojs-ui/dist/oojs-ui.min.js"></script>
<script src="node_modules/oojs-ui/dist/oojs-ui-wikimediaui.min.js"></script>

Loading the library

While the distribution directory is chock-full of files, you will normally load only the following three:

  • oojs-ui.js, containing the full library;
  • One of oojs-ui-wikimediaui.css or oojs-ui-apex.css, containing theme-specific styles; and
  • One of oojs-ui-wikimediaui.js or oojs-ui-apex.js, containing theme-specific code

You can load additional icon packs from files named oojs-ui-wikimediaui-icons-*.css or oojs-ui-apex-icons-*.css.

The remaining files make it possible to load only parts of the whole library.

Furthermore, every CSS file has a right-to-left (RTL) version available, to be used on pages using right-to-left languages if your environment doesn't automatically flip them as needed.

Issue tracker

Found a bug or missing feature? Please report it in our issue tracker Phabricator!


We are always delighted when people contribute patches. To setup your development environment:

  1. Clone the repo: $ git clone https://gerrit.wikimedia.org/r/oojs/ui oojs-ui

  2. Move into the library directory:
    $ cd oojs-ui

  3. Install composer and make sure running composer will execute it (e.g. add it to $PATH in POSIX environments).

  4. Install dev dependencies:
    $ npm install

  5. Build the library (you can alternatively use grunt quick-build if you don't need to rebuild the PNGs):
    $ grunt build

  6. You can see a suite of demos in /demos by executing:
    $ npm run-script demos

  7. You can also copy the distribution files from the dist directory into your project.

  8. You can start a local web server by running php -S localhost:80 in your root dir.

  9. You can navigate to http://localhost/tests/ to run the tests locally in your browser.

We use Gerrit for code review, and Phabricator to track issues. To contribute patches or join discussions all you need is a developer account.

  • If you've found a bug, or wish to request a feature raise a ticket on Phabricator.
  • To submit your patch, follow the "getting started" quick-guide. We try to review patches within a week.
  • We automatically lint and style-check changes to JavaScript, PHP, LESS/CSS, Ruby and JSON files. You can test these yourself with npm test and composer test locally before pushing changes. SVG files should be squashed in advance of committing with SVGO using svgo --pretty --disable=removeXMLProcInst --disable=cleanupIDs <filename>.

A new version of the library is released most weeks on Tuesdays.


Get updates, ask questions and join the discussion with maintainers and contributors:

  • Join the Wikimedia Developers mailing list, wikitech-l.
  • Chat with the maintainers on #wikimedia-dev on irc.libera.chat.
  • Ask questions on StackOverflow.
  • Watchlist the documentation on MediaWiki to stay updated.


We use the Semantic Versioning guidelines.

Releases will be numbered in the following format:



Release process:

    $ cd path/to/oojs-ui/
    $ git remote update
    $ git checkout -B release -t origin/master

    # Clean install npm dependencies. Update Composer dependencies. And ensure tests pass
    $ npm ci && composer update && npm test && composer test

    # Update release notes
    # Copy the resulting list into a new section at the top of History.md and edit
    # into five sub-sections, in order:
    # * ### Breaking changes
    # * ### Deprecations
    # * ### Features
    # * ### Styles
    # * ### Code
    $ git log --format='* %s (%aN)' --no-merges v$(node -e 'console.log(require("./package").version);')...HEAD | grep -v "Localisation updates from" | sort
    $ edit History.md

    # Generate the list of Phabricator tasks
    # Copy the resulting list and save it for later. Paste it into the commit message when updating MediaWiki.
    $ git log --pretty=format:%b v$(node -e 'console.log(require("./package").version);')...HEAD | grep Bug: | sort | uniq

    # Update the version number (change 'patch' to 'minor' if you've made breaking changes):
    $ npm version patch --git-tag-version=false

    # Commit the release and submit to Gerrit
    $ git add -p
    $ git commit -m "Tag v$(node -e 'console.log(require("./package").version);')"
    $ git review

    # After merging this commit, push the tag and publish to NPM:
    $ git remote update
    $ git checkout origin/master
    $ git tag "v$(node -e 'console.log(require("./package").version);')"
    $ npm run publish-build && git push --tags && npm publish

    # Update the mediawiki/vendor repo:
    $ cd path/to/mediawiki-vendor
    # Replace 1.2.34 with the version number of the new release
    # See the README.md in the mediawiki/vendor repo for info on which composer version you must use
    # and how to run composer through Docker if you have the wrong version
    $ composer require oojs/oojs-ui 1.2.34 --no-update
    $ composer update --no-dev
    $ git add oojs/oojs-ui
    # Commit these changes with the following commit message (example: https://gerrit.wikimedia.org/r/c/mediawiki/vendor/+/813629 )
    # Update OOUI to v1.2.34
    #  Release notes: https://gerrit.wikimedia.org/g/oojs/ui/+/v1.2.34/History.md"
    $ git commit -a
    $ git review
    # Look at the commit message to get the Change-Id. Copy the Change-Id and save it for later.
    # You will need it for the Depends-On: line in the commit message when updating MediaWiki.
    $ git show --stat

    # Update the mediawiki repo:
    $ cd path/to/mediawiki
    # Update the version number of oojs/oojs-ui
    $ edit composer.json
    # Update or add the "Updated OOUI from v1.2.24 to v1.2.34" entry in the "Changed external libraries" section
    $ edit RELEASE-NOTES-1.NN
    # Update the version: field and the version number in the URL for ooui
    $ edit resources/lib/foreign-resources.yaml
    # Compute the new integrity hash
    $ php maintenance/run.php manageForeignResources make-sri ooui
    # Replace the integrity: field with this new hash
    $ edit resources/lib/foreign-resources.yaml
    $ php maintenance/run.php manageForeignResources update ooui
    $ git add resources/lib/ooui
    # Commit these changes with the following commit message (example: https://gerrit.wikimedia.org/r/c/mediawiki/core/+/813630 )
    # Update OOUI to v1.2.34
    #  Release notes: https://gerrit.wikimedia.org/g/oojs/ui/+/v1.2.34/History.md"
    # [Insert the list of Bug: lines you saved before]
    # Depends-On: [Insert the Change-Id of the vendor repo commit]
    $ git commit -a
    $ git review