feat(phpcs): Correct any issues reported by phpcs

src/Plugin/Form/SystemThemeSettings.php

@@ -30,13 +30,13 @@ class SystemThemeSettings extends BootstrapSystemThemeSettings {
     $form['wxt_bootstrap'] = [
       '#type' => 'vertical_tabs',
       '#attached' => ['library' => ['bootstrap/theme-settings']],
-      '#prefix' => '<h2><small>' . t('WxT Bootstrap Settings') . '</small></h2>',
+      '#prefix' => '<h2><small>' . $this->t('WxT Bootstrap Settings') . '</small></h2>',
       '#weight' => -10,
     ];
     $groups = [
-      'accessibility' => t('Accessibility'),
-      'customization' => t('Customization'),
-      'gcweb' => t('GCWeb'),
+      'accessibility' => $this->t('Accessibility'),
+      'customization' => $this->t('Customization'),
+      'gcweb' => $this->t('GCWeb'),
     ];
     foreach ($groups as $group => $title) {
       $form[$group] = [

src/Plugin/Preprocess/Comment.php

@@ -18,11 +18,6 @@ class Comment extends PreprocessBase {
    * {@inheritdoc}
    */
   public function preprocessVariables(Variables $variables) {
-    $account = $variables['comment']->getOwner();
-    $username = [
-      '#theme' => 'username',
-      '#account' => $account,
-    ];
     $variables['author'] = \Drupal::service('renderer')->render($elements);
 
     // Getting the node creation time stamp from the comment object.
@@ -30,7 +25,10 @@ class Comment extends PreprocessBase {
 
     // Adjust submitted display.
     $variables['created'] = \Drupal::service('date.formatter')->format($date, 'wxt_standard');
-    $variables['submitted'] = $this->t('@username - <span class="comments-ago">@datetime </span>', ['@username' => $variables['author'], '@datetime' => $variables['created']]);
+    $variables['submitted'] = $this->t('@username - <span class="comments-ago">@datetime </span>', [
+      '@username' => $variables['author'],
+      '@datetime' => $variables['created'],
+    ]);
   }
 
 }

src/Plugin/Preprocess/MaintenancePage.php

@@ -19,7 +19,7 @@ class MaintenancePage extends PreprocessBase {
   public function preprocess(array &$variables, $hook, array $info) {
     $config = \Drupal::config('wxt_library.settings');
     $variant = ($config->get('minimized.options')) ? 'minified' : 'source';
-    $wxt_libraries = _wxt_library_options() + ['wet-boew' => t('Core')];
+    $wxt_libraries = _wxt_library_options() + ['wet-boew' => $this->t('Core')];
     $wxt_active = $config->get('wxt.theme');
 
     foreach ($wxt_libraries as $wxt_library => $name) {

wxt_bootstrap.theme

@@ -69,12 +69,12 @@ function wxt_bootstrap_theme_suggestions_page_alter(array &$suggestions, array $
         $wxt_active = $wxt->getLibraryName();
 
         if ($node->book['bid'] == $node->id()) {
-          // Theme book index page
+          // Theme book index page.
           $suggestions[] = $variables['theme_hook_original'] . '__book_index';
           $suggestions[] = $variables['theme_hook_original'] . '__' . $wxt_active . '__book_index';
         }
         else {
-          // Theme book child page
+          // Theme book child page.
           $suggestions[] = $variables['theme_hook_original'] . '__book_page';
           $suggestions[] = $variables['theme_hook_original'] . '__' . $wxt_active . '__book_page';
         }
@@ -165,7 +165,7 @@ function wxt_bootstrap_preprocess_filter_caption(&$variables) {
   $node = \Drupal::routeMatch()->getParameter('node');
 
   if (!$node instanceof NodeInterface) {
-    // Show caption if not on a node page to ensure it displays in CKEditor
+    // Show caption if not on a node page to ensure it displays in CKEditor.
     $variables['show_caption'] = TRUE;
   }
 }