Add phpcs as a composer script

src/Handler.php

@@ -79,10 +79,27 @@ class Handler {
         $scriptDescriptions[$name] = $script['description'];
       }
     }
+    foreach ($this->defaults() as $key => $default) {
+      $scripts[$key] = $default['script'];
+      $scriptDescriptions[$key] = $default['description'];
+    }
 
     $settings->setSection('scripts', $scripts);
     $settings->setSubSection('extra', 'scripts-description', $scriptDescriptions);
     $settings->write();
   }
 
+  /**
+   * Provides an array of default scripts for Drupal projects.
+   *
+   * @return array
+   */
+  protected function defaults() {
+    return [
+      'phpcs' => [
+        'script' => 'phpcs --standard=DrupalPractice web/modules/custom/ web/profiles/custom/ web/themes/custom/',
+        'description' => 'Run PHP Code Sniffer on custom code',
+      ],
+    ];
+  }
 }