phpcs.xml

<?xml version="1.0" encoding="UTF-8"?>
<ruleset name="DrupalCode.Cn">
  <description>PHP CodeSniffer configuration for DrupalCode.Cn development.</description>
  <!-- Check all files in the current directory and below. -->
  <!-- file tags and extensions arg will be ignored by PhpStorm quality tool, and use the setting in the PhpStorm setting form. -->
  <!-- These lines here is effective only when running "vendor/bin/phpcs" without any parameter. -->
  <arg name="extensions" value="php,module,inc,install,test,profile,theme,css,info,txt,md,yml"/>

  <exclude-pattern>*/node_modules/*</exclude-pattern>

  <!-- Change this value to 7 if you want to check Drupal 7 code. -->
  <config name="drupal_core_version" value="9"/>

  <!-- If you have Coder installed locally then you can reference the Drupal
  standards with relative paths. Otherwise, simply use "Drupal" and
  "DrupalPractice. -->
  <rule ref="./vendor/drupal/coder/coder_sniffer/Drupal">
    <!-- Example how you would disable a rule you are not compliant with yet:
    <exclude name="Drupal.Commenting.Deprecated"/>
    -->
  </rule>
  <rule ref="./vendor/drupal/coder/coder_sniffer/DrupalPractice"/>

  <!-- Example how you would disable an external rule you do not like:
  <rule ref="PEAR.Functions.ValidDefaultValue.NotAtEnd">
    <severity>0</severity>
  </rule>
  -->

</ruleset>