Issue #3258045: Ensure update command in Stage::require() only updates specified packages

package_manager/src/ComposerUtility.php

@@ -128,23 +128,6 @@ class ComposerUtility {
     return array_values($core_packages);
   }
 
-  /**
-   * Returns the names of the core packages in the dev dependencies.
-   *
-   * All packages listed in ../core_packages.json are considered core packages.
-   *
-   * @return string[]
-   *   The names of the core packages in the dev requirements.
-   *
-   * @todo Make this return a keyed array of packages, not just names in
-   *   https://www.drupal.org/i/3258059.
-   */
-  public function getCoreDevPackageNames(): array {
-    $dev_packages = $this->composer->getPackage()->getDevRequires();
-    $dev_packages = array_keys($dev_packages);
-    return array_intersect(static::getCorePackageList(), $dev_packages);
-  }
-
   /**
    * Returns all Drupal extension packages in the lock file.
    *
@@ -174,7 +157,7 @@ class ComposerUtility {
    *   All packages in the lock file, keyed by name.
    */
   protected function getLockedPackages(): array {
-    $locked_packages = $this->composer->getLocker()
+    $locked_packages = $this->getComposer()->getLocker()
       ->getLockedRepository(TRUE)
       ->getPackages();