Vector is a skin for MediaWiki. Vector has been the default skin on all Wikimedia wikis since 2010.
Vector Skin



Configuration options

See skin.json.


Node version

It is recommended to use nvm to use the version of node defined in .nvmrc during local development. This ensures consistency amongst development environments.

Coding conventions

We strive for compliance with MediaWiki conventions:

Additions and deviations from those conventions that are more tailored to this project are noted at:

URL query parameters

Skin preferences

Vector defines skin-specific user preferences. These are exposed on Special:Preferences when the VectorShowSkinPreferences configuration is enabled. The user's preference state for skin preferences is used for skin previews and any other operation unless specified otherwise.


Vector defines a "version" preference to enable users who prefer the December 2019 version of Vector to continue to do so without any visible changes. This version is called "Legacy Vector." The related preference defaults are configurable via the configurations prefixed with VectorDefaultSkinVersion. Version preference and configuration may be overridden by the useskinversion URL query parameter.

Pre-commit tests

A pre-commit hook is installed when executing npm install. By default, it runs npm test which is useful for automatically validating everything that can be in a reasonable amount of time. If you wish to defer these tests to be executed by continuous integration only, set the PRE_COMMIT environment variable to 0:

$ export PRE_COMMIT=0
$ git commit

Or more succinctly:

$ PRE_COMMIT=0 git commit

Skipping the pre-commit tests has no impact on Gerrit change identifier hooks.


See hooks.txt.