WordPress · gziolo · Dec 18, 2020 · Jul 20, 2016 · Jul 20, 2016 · Jul 20, 2016
diff --git a/docs/manifest.json b/docs/manifest.json
@@ -1805,6 +1805,12 @@
 		"markdown_source": "../packages/shortcode/README.md",
 		"parent": "packages"
 	},
+	{
+		"title": "@wordpress/stylelint-config",
+		"slug": "packages-stylelint-config",
+		"markdown_source": "../packages/stylelint-config/README.md",
+		"parent": "packages"
+	},
 	{
 		"title": "@wordpress/token-list",
 		"slug": "packages-token-list",

diff --git a/packages/stylelint-config/.npmrc b/packages/stylelint-config/.npmrc
@@ -0,0 +1 @@
+package-lock=false
diff --git a/packages/stylelint-config/CHANGELOG.md b/packages/stylelint-config/CHANGELOG.md
@@ -0,0 +1,250 @@
+<!-- Learn how to maintain this file at https://github.com/WordPress/gutenberg/tree/master/packages#maintaining-changelogs. -->
+
+## Unreleased
+
+### Breaking Change
+
+-   Removed stylelint `^10.1.0`, `^11.0.0`, and `^12.0.0` as peer dependency.
+
+### Internal
+
+-   Imported from `WordPress-Coding-Standards/stylelint-config-wordpress` repository to `WordPress/gutenberg` ([#22777](https://github.com/WordPress/gutenberg/pull/22777))
+
+## 17.0.0 (2020-05-31)
+
+-   Updated: `stylelint-scss` to `3.17.2`.
+-   Updated: `stylelint` to `13.0.0`.
+
+## 16.0.0 (2019-12-31)
+
+-   Fixed: `selector-class-pattern` rule regex to account for numerals, case detection, and ensure kebab-case over snake_case.
+-   Fixed: `selector-id-pattern` rule regex to account for numerals, case detection, and ensure kebab-case over snake_case.
+-   Updated: `stylelint-config-recommended-scss` to `4.1.0`.
+-   Updated: `stylelint-find-rules` to `2.2.0`.
+-   Updated: `stylelint-scss` to `3.13.0`.
+-   Updated: `stylelint` to `11.0.0`.
+
+## 15.0.0 (2019-10-05)
+
+-   Added: NodeJS 12.x.x support.
+-   Updated: `stylelint` to `11.0.0`.
+-   Removed: `stylelint < 10.1.0` compatibility.
+-   Updated: `stylelint-config-recommended` to `3.0.0`.
+-   Updated: `stylelint-config-recommended-scss` to `4.0.0`.
+-   Updated: Bump minimum Node.js required version to `10.0.0`.
+
+## 14.0.0 (2019-04-18)
+
+-   Updated: `stylelint` to `10.0.0`.
+-   Updated: `stylelint-scss` to `3.6.0`.
+-   Updated: `stylelint-config-recommended` to `2.2.0`.
+
+## 13.1.0 (2018-08-19)
+
+-   Added: Added SCSS _shared config_ `extends` tests.
+-   Changed: `stylelint-config-wordpress/scss` now extends [`stylelint-config-recommended-scss`](https://github.com/kristerkari/stylelint-config-recommended-scss) (the net result of this change results in no rule changes for this SCSS config).
+-   Updated: `stylelint-scss` to `3.3.0`.
+-   Updated: `stylelint` to `9.5.0`.
+
+## 13.0.0 (2018-03-19)
+
+-   Added: stylelint `9.1.3` support.
+-   Changed: Updated `stylelint` peer dependency version to `^9.1.3`.
+-   Changed: Improved `no-duplicate-selectors` tests.
+-   Removed: Jest snapshots.
+-   Removed: `stylelint < 9.1.3` compatibility.
+-   Updated: `selector-pseudo-element-colon-notation` to use `double`
+-   Updated: `stylelint-config-recommended` to `2.1.0`.
+-   Updated: `stylelint-scss` to `2.1.0`.
+-   Updated: Bump minimum Node.js required version to `8.9.3`.
+
+## 12.0.0 (2017-07-18)
+
+-   Changed: `stylelint-config-wordpress` now extends [`stylelint-config-recommended`](https://github.com/stylelint/stylelint-config-recommended), which turns on the `at-rule-no-unknown`, `block-no-empty`, `comment-no-empty`, `declaration-block-no-ignored-properties`, `declaration-block-no-redundant-longhand-properties`, `font-family-no-duplicate-names`, `media-feature-name-no-unknown`, `no-empty-source` rule. These rules are part of stylelint's [possible errors](https://github.com/stylelint/stylelint/blob/master/docs/user-guide/rules.md#possible-errors) rules.
+-   Removed: `stylelint-scss < 1.5.1` compatibility.
+-   Removed: Removed style guide docs.
+-   Removed: `at-rule-no-unknown` custom `ignoreAtRules` options in `stylelint-config-wordpress/scss` shared config.
+-   Added: `scss/at-rule-no-unknown` rule in `stylelint-config-wordpress/scss` shared config.
+-   Added: NodeJS 8.x.x support.
+-   Added: npm 5.x.x support.
+-   Added: Jest snapshots to help detect and prevent regressions.
+
+## 11.0.0 (2017-05-16)
+
+-   Added: `declaration-property-unit-whitelist` rule to allow `px` and exclude `%` and `em` units in `line-height` values.
+-   Changed: Relocated repo to https://github.com/WordPress-Coding-Standards.
+-   Fixed: Include CSS config `at-rule-empty-line-before` rules in SCSS config.
+
+## 10.0.2 (2017-04-29)
+
+-   Added: Added `import` to `ignoreAtRules` option in `at-rule-empty-line-before` rule for SCSS config.
+
+## 10.0.1 (2017-04-21)
+
+-   Removed: `rule-non-nested-empty-line-before` rule from SCSS config. This rule is deprecated in stylelint v8, the new `rule-empty-line-before` rule already exists in the primary config.
+
+## 10.0.0 (2017-04-21)
+
+-   Added: `scss/selector-no-redundant-nesting-selector` rule in `stylelint-config-wordpress/scss` shared config.
+-   Added: `selector-no-empty` rule.
+-   Added: NodeJS 7.x.x support
+-   Fixed: Added `stylelint-scss` plugin @if/@else placement rules.
+-   Fixed: Ignore `relative` keyword names in `font-weight-notation` rule.
+-   Fixed: Ignore proprietary `DXImageTransform.Microsoft` MS filters
+-   Fixed: Removed `@debug` from `ignoreAtRules` array of `at-rule-no-unknown` rule in `stylelint-config-wordpress/scss` chared config.
+-   Deprecated `blockless-group` option for `at-rule-empty-line-before` rule. Use the new `blockless-after-blockless` option instead.
+-   Deprecated `media-feature-no-missing-punctuation` rule.
+-   Deprecated `rule-nested-empty-line-before` and `rule-non-nested-empty-line-before` rules. Use the new `rule-empty-line-before` rule instead.
+-   Deprecated `selector-no-empty` rule.
+-   Refactor: Switch from AVA to Jest for tests.
+-   Refactor: Switch from eslint-plugin-ava to eslint-plugin-jest.
+-   Removed: `stylelint < 7.10.1` compatibility.
+-   Removed: `stylelint-scss < 1.4.4` compatibility.
+-   Removed: NodeJS 4.x support, `stylelint` and `stylelint-config-wordpress` now require NodeJS > 6.9.1 LTS or greater
+
+## 9.1.1 (2016-09-30)
+
+-   Fixed: Re-releasing failed npmjs.com 9.1.0 release as 9.1.1.
+
+## 9.1.0 (2016-09-30)
+
+-   Added: `stylelint-config-wordpress/scss` preset.
+
+## 9.0.0 (2016-09-10)
+
+-   Removed: `stylelint < 7.2.0` compatibility.
+-   Removed: NodeJS 0.12.x support, `stylelint` and `stylelint-config-wordpress` now require NodeJS > 4.2.1 LTS or greater
+-   Added: `at-rule-no-unknown` rule.
+-   Added: `selector-attribute-quotes` rule.
+-   Added: `font-weight-notation` rule.
+-   Added: `max-line-length` rule.
+-   Added: `property-no-unknown` rule.
+-   Added: `selector-class-pattern` rule.
+-   Added: `selector-id-pattern` rule.
+-   Deprecated `no-missing-eof-newline` rule. Use the new `no-missing-end-of-source-newline` rule instead.
+-   Fixed `font-family-name-quotes` test warning message in `values.js`.
+
+## 8.0.0 (2016-06-14)
+
+-   Removed: `stylelint < 6.6.0` compatibility.
+-   Removed: `number-zero-length-no-unit` rule.
+-   Added: `length-zero-no-unit` rule.
+-   Added: `value-keyword-case` rule.
+
+## 7.1.1 (2016-05-30)
+
+-   Fixed: Re-releasing failed npmjs.com 7.0.0 release as 7.1.1.
+
+## 7.1.0 (2016-05-30)
+
+-   Fixed: `font-family-name-quotes` rule deprecated option `double-where-recommended` to new `always-where-recommended` option.
+-   Fixed: `function-url-quotes` rule deprecated option `none` to new `never` option.
+-   Removed: `stylelint < 6.5.1` compatibility.
+-   Changed: Improved tests and documentation.
+-   Added: `comment-empty-line-before` rule.
+
+## 7.0.0 (2016-05-20)
+
+-   Added: `keyframe-declaration-no-important` rule.
+-   Added: `selector-pseudo-class-no-unknown` rule.
+-   Added: `selector-pseudo-element-no-unknown` rule.
+-   Added: `selector-type-no-unknown` rule.
+
+## 6.0.0 (2016-05-17)
+
+-   Added: `at-rule-name-space-after` rule.
+-   Added: `no-extra-semicolons` rule.
+-   Added: `selector-attribute-operator-space-after` rule.
+-   Added: `selector-attribute-operator-space-before` rule.
+-   Added: `selector-max-empty-liness` rule.
+
+## 5.0.0 (2016-04-24)
+
+-   Added: `at-rule-name-case` rule.
+-   Added: `declaration-block-no-duplicate-properties` rule.
+-   Added: `function-max-empty-lines` rule.
+-   Added: `function-name-case` rule.
+-   Added: `property-case` rule.
+-   Added: `selector-attribute-brackets-space-inside` rule.
+-   Added: `selector-pseudo-class-case` rule.
+-   Added: `selector-pseudo-class-parentheses-space-inside` rule.
+-   Added: `selector-pseudo-element-case` rule.
+-   Added: `shorthand-property-no-redundant-values` rule.
+-   Added: `unit-case` rule.
+-   Added: `unit-no-unknown` rule.
+
+## 4.0.0 (2016-03-25)
+
+-   Removed: `stylelint < 5.2.0` compatibility.
+-   Added: `at-rule-semicolon-newline-after` rule.
+-   Added: `selector-type-case` rule.
+
+## 3.0.1 (2016-03-10)
+
+-   Added: `stylelint` version `^4.5.0` as a peer dependency to `peerDependencies` in `package.json`
+
+## 3.0.0 (2016-03-08)
+
+-   Removed: `stylelint < 4.5.0` compatibility.
+-   Deprecated: `rule-no-shorthand-property-overrides` rule. Use the new `declaration-block-no-shorthand-property-overrides` rule instead.
+-   Deprecated: `rule-trailing-semicolon` rule. Use the new `declaration-block-trailing-semicolon` rule instead.
+-   Added: `color-named` rule.
+-   Added: `declaration-block-no-shorthand-property-overrides` rule.
+-   Added: `declaration-block-trailing-semicolon` rule.
+-   Added: `string-no-newline` rule.
+
+## 2.1.0 (2016-03-03)
+
+-   Added: `max-empty-lines` rule, limits the number of adjacent empty lines to 2.
+-   Changed: `rule-nested-empty-line-before` rule option `ignore: ["after-comment"]`.
+-   Removed all vendor prefixes, lets autoprefixer handle vendor prefixes:
+    -   Removed: `at-rule-no-vendor-prefix`
+    -   Removed: `media-feature-name-no-vendor-prefix`
+    -   Removed: `property-no-vendor-prefix`
+    -   Removed: `selector-no-vendor-prefix`
+    -   Removed: `value-no-vendor-prefix`
+
+## 2.0.2 (2016-02-17)
+
+-   Fixed another npmjs.com release issue
+
+## 2.0.1 (2016-02-17)
+
+-   Fixed npmjs.com release
+
+## 2.0.0 (2016-02-17)
+
+-   Removed: `media-query-parentheses-space-inside` rule.
+-   Removed: `stylelint < 4.3.4` compatibility.
+-   Added: `font-family-name-quotes` rule with double quotes where recommended option.
+-   Added: `media-feature-no-missing-punctuation` rule.
+-   Added: `no-invalid-double-slash-comments` rule.
+
+## 1.1.1 (2016-01-19)
+
+-   Changed: `rule-non-nested-empty-line-before` with option `ignore: ["after-comment"],`.
+
+## 1.1.0 (2016-01-18)
+
+-   Added: `selector-pseudo-element-colon-notation` with option `single`
+
+## 1.0.1 (2015-12-11)
+
+-   Changed: config syntax.
+
+## 1.0.0 (2015-12-11)
+
+-   Removed: `stylelint < 3.0.0` compatibility.
+-   Changed: renamed the `function-space-after` rule to `function-whitespace-after`.
+-   Changed: `at-rule-empty-line-before` with option `ignore: ["after-comment"],`.
+-   Changed: `declaration-colon-space-after` with option `always-single-line`.
+-   Added: `declaration-colon-newline-after` with option `always-multi-line`.
+-   Added: `function-linear-gradient-no-nonstandard-direction`.
+
+## 0.2.0 (2015-09-04)
+
+-   Fixed: No quotes for URLs -> `"function-url-quotes": [ 2, "none" ]`.
+
+## 0.1.0 (2015-08-01)
+
+Initial release.
diff --git a/packages/stylelint-config/LICENSE b/packages/stylelint-config/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 stylelint
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/packages/stylelint-config/README.md b/packages/stylelint-config/README.md
@@ -0,0 +1,57 @@
+# stylelint config
+
+[stylelint](https://stylelint.io/) configuration rules to ensure your CSS is compliant with the [WordPress CSS Coding Standards](https://developer.wordpress.org/coding-standards/wordpress-coding-standards/css/).
+
+## Installation
+
+```bash
+$ npm install @wordpress/stylelint-config --save-dev
+```
+
+## Usage
+
+If you've installed `@wordpress/stylelint-config` locally within your project, just set your `stylelint` config to:
+
+```json
+{
+	"extends": "@wordpress/stylelint-config"
+}
+```
+
+If you've globally installed `@wordpress/stylelint-config` using the `-g` flag, then you'll need to use the absolute path to `@wordpress/stylelint-config` in your config:
+
+```json
+{
+	"extends": "/absolute/path/to/@wordpress/stylelint-config"
+}
+```
+
+## Presets
+
+In addition to the default preset, there is also a SCSS preset. This preset extends both `@wordpress/stylelint-config` and [`stylelint-config-recommended-scss`](https://github.com/kristerkari/stylelint-config-recommended-scss).
+
+### SCSS
+
+```json
+{
+	"extends": [ "@wordpress/stylelint-config/scss" ]
+}
+```
+
+## Extending the config
+
+Simply add a `"rules"` key to your config and add your overrides there.
+
+For example, to change the `indentation` to four spaces and turn off the `number-leading-zero` rule:
+
+```json
+{
+	"extends": "@wordpress/stylelint-config",
+	"rules": {
+		"indentation": 4,
+		"number-leading-zero": null
+	}
+}
+```
+
+<br/><br/><p align="center"><img src="https://s.w.org/style/images/codeispoetry.png?1" alt="Code is Poetry." /></p>