Initial Drupal 11 with DDEV setup

vendor/symfony/validator/Constraints/IsFalseValidator.php

@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+/**
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class IsFalseValidator extends ConstraintValidator
+{
+    public function validate(mixed $value, Constraint $constraint): void
+    {
+        if (!$constraint instanceof IsFalse) {
+            throw new UnexpectedTypeException($constraint, IsFalse::class);
+        }
+
+        if (null === $value || false === $value || 0 === $value || '0' === $value) {
+            return;
+        }
+
+        $this->context->buildViolation($constraint->message)
+            ->setParameter('{{ value }}', $this->formatValue($value))
+            ->setCode(IsFalse::NOT_FALSE_ERROR)
+            ->addViolation();
+    }
+}