Initial Drupal 11 with DDEV setup

vendor/symfony/serializer/NameConverter/SnakeCaseToCamelCaseNameConverter.php

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+<?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\Serializer\NameConverter;
+
+use Symfony\Component\Serializer\Exception\UnexpectedPropertyException;
+
+/**
+ * Underscore to camelCase name converter.
+ *
+ * @author Kévin Dunglas <kevin@dunglas.dev>
+ */
+final readonly class SnakeCaseToCamelCaseNameConverter implements NameConverterInterface
+{
+    /**
+     * Require all properties to be written in camelCase.
+     */
+    public const REQUIRE_CAMEL_CASE_PROPERTIES = 'require_camel_case_properties';
+
+    /**
+     * @param string[]|null $attributes     The list of attributes to rename or null for all attributes
+     * @param bool          $lowerCamelCase Use lowerCamelCase style
+     */
+    public function __construct(
+        private ?array $attributes = null,
+        private bool $lowerCamelCase = true,
+    ) {
+    }
+
+    /**
+     * @param class-string|null    $class
+     * @param array<string, mixed> $context
+     */
+    public function normalize(string $propertyName, ?string $class = null, ?string $format = null, array $context = []): string
+    {
+        if (null !== $this->attributes && !\in_array($propertyName, $this->attributes, true)) {
+            return $propertyName;
+        }
+
+        $camelCasedName = preg_replace_callback(
+            '/(^|_|\.)+(.)/',
+            fn ($match) => ('.' === $match[1] ? '_' : '').strtoupper($match[2]),
+            $propertyName
+        );
+
+        if ($this->lowerCamelCase) {
+            $camelCasedName = lcfirst($camelCasedName);
+        }
+
+        return $camelCasedName;
+    }
+
+    /**
+     * @param class-string|null    $class
+     * @param array<string, mixed> $context
+     */
+    public function denormalize(string $propertyName, ?string $class = null, ?string $format = null, array $context = []): string
+    {
+        if (($context[self::REQUIRE_CAMEL_CASE_PROPERTIES] ?? false) && $propertyName !== $this->normalize($propertyName, $class, $format, $context)) {
+            throw new UnexpectedPropertyException($propertyName);
+        }
+
+        $snakeCased = strtolower(preg_replace('/[A-Z]/', '_\\0', lcfirst($propertyName)));
+        if (null === $this->attributes || \in_array($snakeCased, $this->attributes, true)) {
+            return $snakeCased;
+        }
+
+        return $propertyName;
+    }
+}