phpcs.xml

<?xml version="1.0"?>
<ruleset name="Plugin" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
  <!-- Check only our site MU plugin -->
  <file>src</file>

  <!-- Show colors in console -->
  <arg value="-colors" />

  <!-- Show progress and sniff codes in all reports; Show progress of the run -->
  <arg value="sp" />

  <!-- Scan only PHP files -->
  <arg name="extensions" value="php" />

  <!-- Use Itineris WP Coding Standards -->
  <rule ref="Itineris" />

  <config name="minimum_supported_wp_version" value="6.2" />

  <rule ref="WordPress.WP.I18n">
    <properties>
      <property name="text_domain" type="array" value="itineris-gf-giftaid-field" />
    </properties>
  </rule>

  <rule ref="PSR1.Methods.CamelCapsMethodName.NotCamelCaps">
    <exclude-pattern>src/AddOn.php</exclude-pattern>
    <exclude-pattern>src/GiftAidField.php</exclude-pattern>
  </rule>

  <rule ref="PSR2.Classes.PropertyDeclaration.Underscore">
    <exclude-pattern>src/AddOn.php</exclude-pattern>
  </rule>

  <rule ref="SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint">
    <exclude-pattern>src/AddOn.php</exclude-pattern>
    <exclude-pattern>src/GiftAidField.php</exclude-pattern>
  </rule>

  <rule ref="SlevomatCodingStandard.TypeHints.PropertyTypeHint.MissingAnyTypeHint">
    <exclude-pattern>src/AddOn.php</exclude-pattern>
  </rule>

  <rule ref="SlevomatCodingStandard.TypeHints.ReturnTypeHint.UselessAnnotation">
    <exclude-pattern>src/AddOn.php</exclude-pattern>
    <exclude-pattern>src/GiftAidField.php</exclude-pattern>
  </rule>
</ruleset>