Initial Drupal 11 with DDEV setup

vendor/drupal/core-recipe-unpack/UnpackCollection.php

@@ -0,0 +1,104 @@
+<?php
+
+namespace Drupal\Composer\Plugin\RecipeUnpack;
+
+use Composer\Package\PackageInterface;
+
+/**
+ * A collection with packages to unpack.
+ *
+ * @internal
+ */
+final class UnpackCollection implements \Iterator, \Countable {
+
+  /**
+   * The queue of packages to unpack.
+   *
+   * @var \Composer\Package\PackageInterface[]
+   */
+  private array $packagesToUnpack = [];
+
+  /**
+   * The list of packages that have been unpacked.
+   *
+   * @var array<string, \Composer\Package\PackageInterface>
+   */
+  private array $unpackedPackages = [];
+
+  /**
+   * {@inheritdoc}
+   */
+  public function rewind(): void {
+    reset($this->packagesToUnpack);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function current(): PackageInterface|false {
+    return current($this->packagesToUnpack);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function key(): ?string {
+    return key($this->packagesToUnpack);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function next(): void {
+    next($this->packagesToUnpack);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function valid(): bool {
+    return current($this->packagesToUnpack) !== FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function count(): int {
+    return count($this->packagesToUnpack);
+  }
+
+  /**
+   * Adds a package to the queue of packages to unpack.
+   *
+   * @param \Composer\Package\PackageInterface $package
+   *   The package to add to the queue.
+   */
+  public function add(PackageInterface $package): self {
+    $this->packagesToUnpack[$package->getUniqueName()] = $package;
+    return $this;
+  }
+
+  /**
+   * Marks a package as unpacked.
+   *
+   * @param \Composer\Package\PackageInterface $package
+   *   The package that has been unpacked.
+   */
+  public function markPackageUnpacked(PackageInterface $package): void {
+    $this->unpackedPackages[$package->getUniqueName()] = $package;
+  }
+
+  /**
+   * Checks if a package has been unpacked, or it's queued for unpacking.
+   *
+   * @param \Composer\Package\PackageInterface $package
+   *   The package to check.
+   *
+   * @return bool
+   *   TRUE if the package has been unpacked.
+   */
+  public function isUnpacked(PackageInterface $package): bool {
+    return isset($this->unpackedPackages[$package->getUniqueName()]);
+  }
+
+}