Issue #3030485 by catch, R.shaikh, Gábor Hojtsy, alexpott: [Symfony 5] The "Drupal\Core\Validation\TranslatorInterface" interface extends "Symfony\Component\Translation\TranslatorInterface" that is deprecated since Symfony 4.2, use Symfony\Contracts\Translation\TranslatorInterface instead

core/lib/Drupal/Core/Validation/TranslatorInterface.php

@@ -2,18 +2,35 @@
 
 namespace Drupal\Core\Validation;
 
-use Symfony\Component\Translation\TranslatorInterface as SymfonyTranslatorInterface;
-
 /**
  * Defines an interface used in validation.
  *
- * This extends the interface used by the Symfony validator in order to indicate
- * that the Drupal code is actually independent from the Symfony translation
- * component.
+ * This replaces the interface used by the Symfony validator in order
+ * to indicate that the Drupal code is actually independent from the
+ * Symfony translation component.
  *
  * @see https://github.com/symfony/symfony/pull/6189
  * @see https://github.com/symfony/symfony/issues/15714
  */
-interface TranslatorInterface extends SymfonyTranslatorInterface {
+interface TranslatorInterface {
+
+  /**
+   * Translates the given message.
+   *
+   * @param string $id
+   *   The message id (may also be an object that can be cast to string).
+   * @param array $parameters
+   *   An array of parameters for the message.
+   * @param string|null $domain
+   *   The domain for the message or null to use the default.
+   * @param string|null $locale
+   *   The locale or null to use the default.
+   * @return string
+   *   The translated string.
+   *
+   * @throws InvalidArgumentException
+   *   If the locale contains invalid characters.
+   */
+  public function trans($id, array $parameters = [], $domain = NULL, $locale = NULL);
 
 }