External Libraries

There are several external libraries that are included in each release of WordPress. They are all listed below with relevant details.

npm Dependencies

The following external libraries are managed through npm by including them in the list of dependencies in the package.json file:

Name	Status	Maintenance State	Maintainer(s)	Canonical Location	First included	Type
Twemoji	Bundled	Active	Justine De Caires	GitHub		Library
Moment.js	Bundled	Legacy		GitHub		Library
jQuery	Bundled	Active	jQuery Team	Website		Library
Backbone						Library
clipboard.js						Library
element-closest						Polyfill
FormData						Polyfill
jQuery Color						Library
jQuery Form
jQuery hoverIntent
Lodash						Library
Masonry	Bundled	Active		GitHub		Library
objectFitPolyfill						Polyfill
polyfill-library						Polyfill
ReactReact React is a JavaScript library that makes it easy to reason about, construct, and maintain stateless and stateful user interfaces. https://reactjs.org/.						Library
React DOM
Regenerator Runtime
Underscore						Library
whatwg-fetch						Polyfill

“Adopted” Dependencies

The following external libraries have been effectively abandoned by their original maintainers and are considered “adopted” by the WordPress project. The WordPress CoreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress. code base has become the canonical location for the latest version of the library.

Name	Status	Maintenance State	Maintainer(s)	Canonical Location	First included	Type	Language
MagpieRSS	Bundled	Deprecated	The WordPress Project	WordPress Core		Library	PHPPHP The web scripting language in which WordPress is primarily architected. WordPress requires PHP 7.4 or higher
Services_JSON	Bundled	Deprecated	The WordPress Project	The WordPress Project		Library	PHP
Farbtastic	Bundled		The WordPress Project	WordPress Core			JavaScriptJavaScript JavaScript or JS is an object-oriented computer programming language commonly used to create interactive effects within web browsers. WordPress makes extensive use of JS for a better user experience. While PHP is executed on the server, JS executes within a user’s browser. https://www.javascript.com/.

Composer Dependencies

The following external libraries are managed through Composer by including them in the composer.json file

Name	Status	Maintenance State	Maintainer(s)	Canonical Location	First included	Type
Bundle of CA Root Certificates	Bundled	Active	Mozilla			Bundle