diff --git a/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateErrorTest.php b/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateErrorTest.php
index 2b4b3aa16e74dc25327ea1fb7c3d59ec2081280b..1df9be18a0c882a68f075a62ddb3fdafe8126f3a 100644
--- a/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateErrorTest.php
+++ b/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateErrorTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\auto_updates\FunctionalJavascript;
 
 use Drupal\FunctionalJavascriptTests\WebDriverTestBase;
diff --git a/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateSettingsFormTest.php b/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateSettingsFormTest.php
index 3f0896400a6fa5b628889439596556fd9b2b3770..6efd5aca4ceb47a328f96df23b7a12ca76a44414 100644
--- a/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateSettingsFormTest.php
+++ b/core/modules/auto_updates/tests/src/FunctionalJavascript/UpdateSettingsFormTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\auto_updates\FunctionalJavascript;
 
 use Drupal\auto_updates\CronUpdateRunner;
diff --git a/core/modules/auto_updates/tests/src/Traits/EmailNotificationsTestTrait.php b/core/modules/auto_updates/tests/src/Traits/EmailNotificationsTestTrait.php
index cf6ebe5719bf2fc9ae10c89b669856b722103330..6486e4d62b0153bb73b4cc7f287c247eaeddf623 100644
--- a/core/modules/auto_updates/tests/src/Traits/EmailNotificationsTestTrait.php
+++ b/core/modules/auto_updates/tests/src/Traits/EmailNotificationsTestTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\auto_updates\Traits;
 
diff --git a/core/modules/auto_updates/tests/src/Traits/TestSetUpTrait.php b/core/modules/auto_updates/tests/src/Traits/TestSetUpTrait.php
index bac575e1b85487974f2914e076879480e9e32877..e19e45df092b88610ec595d7a0775638a0470657 100644
--- a/core/modules/auto_updates/tests/src/Traits/TestSetUpTrait.php
+++ b/core/modules/auto_updates/tests/src/Traits/TestSetUpTrait.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\auto_updates\Traits;
 
 use Drupal\package_manager\PathLocator;
diff --git a/core/modules/auto_updates/tests/src/Traits/ValidationTestTrait.php b/core/modules/auto_updates/tests/src/Traits/ValidationTestTrait.php
index 1f2ecb0f05d70df2784420ded510cdee12e6e178..f00b2318f045ed01371464d5054d3d1e60fe92db 100644
--- a/core/modules/auto_updates/tests/src/Traits/ValidationTestTrait.php
+++ b/core/modules/auto_updates/tests/src/Traits/ValidationTestTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\auto_updates\Traits;
 
diff --git a/core/modules/auto_updates/tests/src/Traits/VersionPolicyTestTrait.php b/core/modules/auto_updates/tests/src/Traits/VersionPolicyTestTrait.php
index 624e05a58fb375e8888cd243ef47eef875c6705e..a85fa18775d6779f72691c94356377928b086c11 100644
--- a/core/modules/auto_updates/tests/src/Traits/VersionPolicyTestTrait.php
+++ b/core/modules/auto_updates/tests/src/Traits/VersionPolicyTestTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\auto_updates\Traits;
 
diff --git a/core/modules/package_manager/package_manager.install b/core/modules/package_manager/package_manager.install
index ecacea5272de2f08f2ee8bffd128ed075cefaaca..e7130aa8571b1250f1bb9fd8690cb0a4ff4b7aed 100644
--- a/core/modules/package_manager/package_manager.install
+++ b/core/modules/package_manager/package_manager.install
@@ -10,7 +10,6 @@
 use Drupal\package_manager\ComposerInspector;
 use Drupal\package_manager\Exception\StageFailureMarkerException;
 use Drupal\package_manager\FailureMarker;
-use PhpTuf\ComposerStager\API\Core\BeginnerInterface;
 use PhpTuf\ComposerStager\API\Exception\ExceptionInterface;
 use PhpTuf\ComposerStager\API\Finder\Service\ExecutableFinderInterface;
 
diff --git a/core/modules/package_manager/tests/src/Build/TemplateProjectTestBase.php b/core/modules/package_manager/tests/src/Build/TemplateProjectTestBase.php
index f7127da07694b0d48257bc75c5e5664cec7eda58..0a0aafb972838b9e1eee86fc812192ac8a589e96 100644
--- a/core/modules/package_manager/tests/src/Build/TemplateProjectTestBase.php
+++ b/core/modules/package_manager/tests/src/Build/TemplateProjectTestBase.php
@@ -5,7 +5,6 @@
 namespace Drupal\Tests\package_manager\Build;
 
 use Drupal\BuildTests\QuickStart\QuickStartTestBase;
-use Drupal\Component\Serialization\Yaml;
 use Drupal\Composer\Composer;
 use Drupal\package_manager\Event\CollectPathsToExcludeEvent;
 use Drupal\package_manager_test_event_logger\EventSubscriber\EventLogSubscriber;
diff --git a/core/modules/package_manager/tests/src/Traits/AssertPreconditionsTrait.php b/core/modules/package_manager/tests/src/Traits/AssertPreconditionsTrait.php
index b2aa5e6c9f11db666b42a423a0da02fdd23b8459..70474890e0270302fd1aca32a2b8030999184582 100644
--- a/core/modules/package_manager/tests/src/Traits/AssertPreconditionsTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/AssertPreconditionsTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;
 
diff --git a/core/modules/package_manager/tests/src/Traits/ComposerInstallersTrait.php b/core/modules/package_manager/tests/src/Traits/ComposerInstallersTrait.php
index 3531b7d40f54cf6f06295e6aa418ce374d85e7c5..6ec025354c113ad76e9b45cdb0f07ca11af6d271 100644
--- a/core/modules/package_manager/tests/src/Traits/ComposerInstallersTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/ComposerInstallersTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;
 
diff --git a/core/modules/package_manager/tests/src/Traits/ComposerStagerTestTrait.php b/core/modules/package_manager/tests/src/Traits/ComposerStagerTestTrait.php
index cc9b6442d0864b7893dfbfa1940a5aa913d0feed..9f76afd905813c71ec39c20554685f0053e91e62 100644
--- a/core/modules/package_manager/tests/src/Traits/ComposerStagerTestTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/ComposerStagerTestTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;
 
diff --git a/core/modules/package_manager/tests/src/Traits/FixtureManipulatorTrait.php b/core/modules/package_manager/tests/src/Traits/FixtureManipulatorTrait.php
index c65e670c5ac0585dc81744c8e42137574d59a1c8..4d6939aa875f6ac48249aa0cc9aa836fb3628d78 100644
--- a/core/modules/package_manager/tests/src/Traits/FixtureManipulatorTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/FixtureManipulatorTrait.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\package_manager\Traits;
 
 use Drupal\fixture_manipulator\StageFixtureManipulator;
diff --git a/core/modules/package_manager/tests/src/Traits/FixtureUtilityTrait.php b/core/modules/package_manager/tests/src/Traits/FixtureUtilityTrait.php
index 2764935bb4e7f5a01af6c61fdbb6e181a384f418..9554ba30436f97541a202b17fac827466e998c2e 100644
--- a/core/modules/package_manager/tests/src/Traits/FixtureUtilityTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/FixtureUtilityTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;
 
diff --git a/core/modules/package_manager/tests/src/Traits/InstalledPackagesListTrait.php b/core/modules/package_manager/tests/src/Traits/InstalledPackagesListTrait.php
index e1abf4513443b83ee98e5df0232af7f76c0be887..223fe7198082ca008a62b339c7205f0a2b0beec3 100644
--- a/core/modules/package_manager/tests/src/Traits/InstalledPackagesListTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/InstalledPackagesListTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;
 
diff --git a/core/modules/package_manager/tests/src/Traits/PackageManagerBypassTestTrait.php b/core/modules/package_manager/tests/src/Traits/PackageManagerBypassTestTrait.php
index 21a02fa4ef84b2405d2d69cc40bac20b07751968..797a84f8a4d3b815f097ddcdfbd6165e7e3041c3 100644
--- a/core/modules/package_manager/tests/src/Traits/PackageManagerBypassTestTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/PackageManagerBypassTestTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;
 
diff --git a/core/modules/package_manager/tests/src/Traits/ValidationTestTrait.php b/core/modules/package_manager/tests/src/Traits/ValidationTestTrait.php
index 9d9193f8ef3d98a6e6500c7bc9d9be35cc068026..75f41f1a1568770e54d4b20c4e85757a6c90f47b 100644
--- a/core/modules/package_manager/tests/src/Traits/ValidationTestTrait.php
+++ b/core/modules/package_manager/tests/src/Traits/ValidationTestTrait.php
@@ -1,6 +1,6 @@
 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\package_manager\Traits;