create_claro.sh

#!/bin/sh

# Clone Claro contrib theme into core/themes/claro
pushd core/themes
git clone --branch 8.x-2.x https://git.drupal.org/project/claro.git

# Remove the contrib module's git history.
pushd claro
curl https://www.drupal.org/files/issues/2019-10-11/claro-core-inclusion-3086983-6.patch | git apply -3v

rm -rf .git

sed -i '' 's|css/dist|css/src|g' claro.libraries.yml
sed -i '' 's|css/dist|css/src|g' claro.info.yml

# Remove unwanted files.
rm -rf .github
rm -rf scripts
rm composer.json
rm README.md
rm LICENSE
rm CODE_OF_CONDUCT.md
rm drupalci.yml
rm .eslintignore
rm .eslintrc.json
rm .eslintrc.passing.json
rm .gitignore
rm .stylelintrc.json
rm package.json
rm postcss.config.js
rm yarn.lock

# Change file type of all CSS files to .pcss.css.
pushd css
for file in $(find . -name '*.css')
do
  sed -i '' 's|.css"|.pcss.css"|g' $file
  mv $file $(echo "$file" | sed 's|.css|.pcss.css|g')
done

# Return to the Drupal root directory.
cd `dirs -l -0`

# Move tests to the right folder.
mkdir core/tests/Drupal/FunctionalJavascriptTests/Theme
mv core/themes/claro/tests/src/FunctionalJavascript/* core/tests/Drupal/FunctionalJavascriptTests/Theme
mv core/themes/claro/tests/src/Functional/* core/tests/Drupal/FunctionalTests/Theme


# Make the presence of this new core module known to Composer.
git apply << EOF
diff --git a/core/.stylelintignore b/core/.stylelintignore
new file mode 100644
index 0000000000..d5769bc7c0
--- /dev/null
+++ b/core/.stylelintignore
@@ -0,0 +1,2 @@
+themes/claro/**/*.css
+!themes/claro/**/*.pcss.css
diff --git a/core/composer.json b/core/composer.json
index 8a5d3bdf89..42b7e38dde 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -65,6 +65,7 @@
         "drupal/book": "self.version",
         "drupal/breakpoint": "self.version",
         "drupal/ckeditor": "self.version",
+        "drupal/claro": "self.version",
         "drupal/classy": "self.version",
         "drupal/color": "self.version",
         "drupal/comment": "self.version",
EOF

curl https://www.drupal.org/files/issues/2019-10-11/3087189-13-do-not-test.patch | git apply -3v

# Run yarn prettier.
pushd core
yarn install
yarn prettier
yarn build:js

# Return to the Drupal root directory.
cd `dirs -l -0`

# Create patch.
git add core/themes/claro
git add core/composer.json
git add core/.stylelintignore
git add core/tests/Drupal/FunctionalJavascriptTests/Theme
git add core/tests/Drupal/FunctionalTests/Theme
git diff --staged -C -C > 3079738-CID-source-only.patch

# Build all the CSS files.
pushd core
yarn install
yarn build:css

# Return to the Drupal root directory.
cd `dirs -l -0`

# Create patch.
git add core/themes/claro
git diff --staged -C -C > 3079738-CID.patch

# Clean up.
rm -rf core/themes/claro
git reset --hard HEAD