stylelint-plugin-ckeditor5-rules

CKEditor 5 Stylelint plugins

A set of plugins used by the CKEditor 5 team for Stylelint

By default this plugin is added to our stylelint-config-ckeditor5 preset.

Usage

npm i --save-dev stylelint-plugin-ckeditor5-rules

Add the plugin to a .stylelintrc file, then configure available rules.

{
	"plugins": [
		"stylelint-plugin-ckeditor5-rules/lib/license-header"
	]
}

Rules

license-header

This rule checks if each file starts with proper @license block comment. It requires configuration:

rules: {
	'ckeditor5-rules/license-header': [ 'error', {
		headerLines: [
			'/**',
			' * @license Copyright (c) 2003-2025, CKSource Holding sp. z o.o. All rights reserved.',
			' * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license',
			' */'
		]
	} ]
}

Changelog

11.1.0 (July 10, 2025)

Features

• eslint-plugin-ckeditor5-rules: Add the validate-changelog-entry rule for validating Markdown-based changelog entries. Closes ckeditor/ckeditor5#18777.

Released packages

Check out the Versioning policy guide for more information.

<details> <summary>Released packages (summary)</summary>

Releases containing new features:

• eslint-plugin-ckeditor5-rules: v11.0.1 => v11.1.0

Other releases:

• eslint-config-ckeditor5: v11.0.1 => v11.1.0
• stylelint-config-ckeditor5: v11.0.1 => v11.1.0
• stylelint-plugin-ckeditor5-rules: v11.0.1 => v11.1.0

</details>