Initial Drupal 11 with DDEV setup

vendor/symfony/http-foundation/Session/Flash/AutoExpireFlashBag.php

@@ -0,0 +1,121 @@
+<?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\HttpFoundation\Session\Flash;
+
+/**
+ * AutoExpireFlashBag flash message container.
+ *
+ * @author Drak <drak@zikula.org>
+ */
+class AutoExpireFlashBag implements FlashBagInterface
+{
+    private string $name = 'flashes';
+    private array $flashes = ['display' => [], 'new' => []];
+
+    /**
+     * @param string $storageKey The key used to store flashes in the session
+     */
+    public function __construct(
+        private string $storageKey = '_symfony_flashes',
+    ) {
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function setName(string $name): void
+    {
+        $this->name = $name;
+    }
+
+    public function initialize(array &$flashes): void
+    {
+        $this->flashes = &$flashes;
+
+        // The logic: messages from the last request will be stored in new, so we move them to previous
+        // This request we will show what is in 'display'.  What is placed into 'new' this time round will
+        // be moved to display next time round.
+        $this->flashes['display'] = \array_key_exists('new', $this->flashes) ? $this->flashes['new'] : [];
+        $this->flashes['new'] = [];
+    }
+
+    public function add(string $type, mixed $message): void
+    {
+        $this->flashes['new'][$type][] = $message;
+    }
+
+    public function peek(string $type, array $default = []): array
+    {
+        return $this->has($type) ? $this->flashes['display'][$type] : $default;
+    }
+
+    public function peekAll(): array
+    {
+        return \array_key_exists('display', $this->flashes) ? $this->flashes['display'] : [];
+    }
+
+    public function get(string $type, array $default = []): array
+    {
+        $return = $default;
+
+        if (!$this->has($type)) {
+            return $return;
+        }
+
+        if (isset($this->flashes['display'][$type])) {
+            $return = $this->flashes['display'][$type];
+            unset($this->flashes['display'][$type]);
+        }
+
+        return $return;
+    }
+
+    public function all(): array
+    {
+        $return = $this->flashes['display'];
+        $this->flashes['display'] = [];
+
+        return $return;
+    }
+
+    public function setAll(array $messages): void
+    {
+        $this->flashes['new'] = $messages;
+    }
+
+    public function set(string $type, string|array $messages): void
+    {
+        $this->flashes['new'][$type] = (array) $messages;
+    }
+
+    public function has(string $type): bool
+    {
+        return \array_key_exists($type, $this->flashes['display']) && $this->flashes['display'][$type];
+    }
+
+    public function keys(): array
+    {
+        return array_keys($this->flashes['display']);
+    }
+
+    public function getStorageKey(): string
+    {
+        return $this->storageKey;
+    }
+
+    public function clear(): mixed
+    {
+        return $this->all();
+    }
+}