From d4f1329e8b1f818dadd56f0c5c0c21a3132b4758 Mon Sep 17 00:00:00 2001
From: Aleksander Nowodzinski <a.nowodzinski@cksource.com>
Date: Thu, 31 Oct 2019 11:17:34 +0100
Subject: [PATCH 1/4] Internal: Enabled stylelint in the package.

---
 package.json | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/package.json b/package.json
index f8f38c7c..9b91da0b 100644
--- a/package.json
+++ b/package.json
@@ -50,6 +50,7 @@
     "eslint-config-ckeditor5": "^2.0.0",
     "husky": "^1.3.1",
     "lint-staged": "^7.0.0",
+    "stylelint": "^11.1.1",
     "postcss-loader": "^3.0.0",
     "raw-loader": "^3.1.0",
     "style-loader": "^1.0.0",
@@ -72,11 +73,15 @@
   "scripts": {
     "build": "webpack --mode production",
     "lint": "eslint --quiet '**/*.js'",
+    "stylelint": "stylelint --quiet 'theme/**/*.css' 'docs/**/*.css'",
     "preversion": "npm run build; if [ -n \"$(git status src/ckeditor.js build/ --porcelain)\" ]; then git add -u src/ckeditor.js build/ && git commit -m 'Internal: Build.'; fi"
   },
   "lint-staged": {
     "**/*.js": [
       "eslint --quiet"
+    ],
+    "**/*.css": [
+      "stylelint --quiet"
     ]
   },
   "eslintIgnore": [

From 9563f6fab2456a38b0c68e1d39f4fc9ab37dc931 Mon Sep 17 00:00:00 2001
From: Aleksander Nowodzinski <a.nowodzinski@cksource.com>
Date: Wed, 20 Nov 2019 10:51:56 +0100
Subject: [PATCH 2/4] Internal: Allowed empty input in the stylelint script to
 avoid errors when no files are found. Added missing
 stylelint-config-recommended dependency.

---
 package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 9b91da0b..45158b89 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,7 @@
   "scripts": {
     "build": "webpack --mode production",
     "lint": "eslint --quiet '**/*.js'",
-    "stylelint": "stylelint --quiet 'theme/**/*.css' 'docs/**/*.css'",
+    "stylelint": "stylelint --quiet --allow-empty-input 'theme/**/*.css' 'docs/**/*.css'",
     "preversion": "npm run build; if [ -n \"$(git status src/ckeditor.js build/ --porcelain)\" ]; then git add -u src/ckeditor.js build/ && git commit -m 'Internal: Build.'; fi"
   },
   "lint-staged": {
@@ -81,7 +81,7 @@
       "eslint --quiet"
     ],
     "**/*.css": [
-      "stylelint --quiet"
+      "stylelint --quiet --allow-empty-input"
     ]
   },
   "eslintIgnore": [

From 3ee373ba8483de0b2c4e5972c77e478c60908df9 Mon Sep 17 00:00:00 2001
From: Aleksander Nowodzinski <a.nowodzinski@cksource.com>
Date: Wed, 20 Nov 2019 11:00:37 +0100
Subject: [PATCH 3/4] Internal: Added the stylelintrc config. [skip ci]

---
 .stylelintrc | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 .stylelintrc

diff --git a/.stylelintrc b/.stylelintrc
new file mode 100644
index 00000000..4b350399
--- /dev/null
+++ b/.stylelintrc
@@ -0,0 +1,6 @@
+{
+	"extends": "stylelint-config-recommended",
+	"rules": {
+		"at-rule-no-unknown": null
+	}
+}

From 26fe76cf052800dc48ac974df19371804955636d Mon Sep 17 00:00:00 2001
From: Aleksander Nowodzinski <a.nowodzinski@cksource.com>
Date: Wed, 20 Nov 2019 12:53:56 +0100
Subject: [PATCH 4/4] Used the external stylelint-config-ckeditor5 package for
 stylelint configuration.

---
 .stylelintrc | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/.stylelintrc b/.stylelintrc
index 4b350399..1d86a41f 100644
--- a/.stylelintrc
+++ b/.stylelintrc
@@ -1,6 +1,3 @@
 {
-	"extends": "stylelint-config-recommended",
-	"rules": {
-		"at-rule-no-unknown": null
-	}
+	"extends": "stylelint-config-ckeditor5"
 }