diff --git a/core/lib/Drupal/Core/Config/ConfigImporter.php b/core/lib/Drupal/Core/Config/ConfigImporter.php
index cb7c3c3..f15facd 100644
--- a/core/lib/Drupal/Core/Config/ConfigImporter.php
+++ b/core/lib/Drupal/Core/Config/ConfigImporter.php
@@ -349,6 +349,45 @@ protected function setProcessedExtension($type, $op, $name) {
   }
 
   /**
+   * Orders newly uninstalled extensions for import.
+   *
+   * Sorts the list of newly uninstalled extensions by their weights, so that
+   * dependencies are uninstalled last. Extensions of the same weight are
+   * sorted in reverse alphabetical order, to ensure the order is exactly
+   * opposite from installation.
+   *
+   * @param array $extension_list
+   *   The list of extensions to be uninstalled.
+   *
+   * @see ConfigImporter::sortInstalledExtensions()
+   *
+   * @todo Improve these docs.
+   */
+  protected function sortUninstalledExtensions(array &$extension_list) {
+    array_multisort(array_values($extension_list), SORT_ASC, array_keys($extension_list), SORT_DESC, $extension_list);
+
+  }
+
+  /**
+   * Orders newly installed extensions for import.
+   *
+   * Sorts the list of newly installed extensions in reverse order of their
+   * weights, so that dependencies are installed first. Extensions of the same
+   * weight are sorted in alphabetical order, to ensure the order is exactly
+   * opposite from uninstallation.
+   *
+   * @param array $extension_list
+   *   The list of extensions to be uninstalled.
+   *
+   * @see ConfigImporter::sortUninstalledExtensions()
+   *
+   * @todo Improve these docs.
+   */
+  protected function sortInstalledExtensions(array &$extension_list) {
+    array_multisort(array_values($extension_list), SORT_DESC, array_keys($extension_list), SORT_ASC, $extension_list);
+  }
+
+  /**
    * Populates the extension change list.
    */
   protected function createExtensionChangelist() {
@@ -373,15 +412,9 @@ protected function createExtensionChangelist() {
     // Work out what modules to install and uninstall.
     $uninstall = array_diff(array_keys($current_extensions['module']), array_keys($new_extensions['module']));
     $install = array_diff(array_keys($new_extensions['module']), array_keys($current_extensions['module']));
-    // Sort the module list by their weights. So that dependencies are
-    // uninstalled last. Modules of the same weight are sorted in reverse
-    // alphabetical order.
-    array_multisort(array_values($module_list), SORT_ASC, array_keys($module_list), SORT_DESC, $module_list);
+    $this->sortUninstalledExtensions($module_list);
     $uninstall = array_intersect(array_keys($module_list), $uninstall);
-    // Sort the module list by their weights (reverse). So that dependencies
-    // are installed first. Modules of the same weight are sorted in
-    // alphabetical order.
-    array_multisort(array_values($module_list), SORT_DESC, array_keys($module_list), SORT_ASC, $module_list);
+    $this->sortInstalledExtensions($module_list);
     $install = array_intersect(array_keys($module_list), $install);
 
     // Work out what themes to enable and to disable.