.gitignore

 .DS_Store
 /.idea
+composer.lock

.gitlab-ci.yml

+include:
+  ################
+  # DrupalCI includes:
+  # As long as you include this, any future includes added by the Drupal Association will be accessible to your pipelines automatically.
+  # View these include files at https://git.drupalcode.org/project/gitlab_templates/
+  ################
+  - project: $_GITLAB_TEMPLATES_REPO
+    ref: $_GITLAB_TEMPLATES_REF
+    file:
+      - '/includes/include.drupalci.main.yml'
+      - '/includes/include.drupalci.variables.yml'
+      - '/includes/include.drupalci.workflows.yml'
+
+variables:
+  _CSPELL_WORDS: 'Albin'
+  OPT_IN_TEST_NEXT_MAJOR: 1
+
+phpcs:
+  allow_failure: false
+
+phpstan:
+  allow_failure: false
+
+phpstan (next major):
+  allow_failure: true
+
+phpstan (next minor):
+  allow_failure: true

README.md

+# Components!
+
+The Components module makes it easier for a theme to organize its components.
+It allows themes (and modules) to register Twig namespaces and provides some 
+additional Twig functions and filters for use in Drupal templates.
+
+For a full description of the module, visit the
+[project page](https://www.drupal.org/project/components).
+
+Submit bug reports and feature suggestions, or track changes in the
+[issue queue](https://www.drupal.org/project/issues/components?categories=All).
+
+
+## Table of contents
+
+- Features
+- Installation
+- Requirements
+- Configuration
+- Usage
+- Maintainers
+
+
+## Features
+- Offers feature called Template namespaces.
+
+
+## Installation
+
+Install as you would normally install a contributed Drupal module. For further
+information, see
+[Installing Drupal Modules](https://www.drupal.org/docs/extending-drupal/installing-drupal-modules).
+
+
+## Requirements
+
+This module requires no modules outside of Drupal core.
+
+
+## Configuration
+
+This modules doesn't have any configuration. It allows user to add the template
+namespaces.
+
+
+## Maintainers
+
+- John Albin Wilkins - [JohnAlbin](https://www.drupal.org/u/johnalbin)
+- Rob Loach - [RobLoach](https://www.drupal.org/u/robloach)
\ No newline at end of file

components.info.yml

 type: module
 name: Components
 description: 'Registers folders of components defined by your theme or module as Twig namespaces'
-core_version_requirement: ^9 || ^10
+core_version_requirement: ^10.2 || ^11
+php: 8.1
 components:
   # Allow themes to reuse this module's default namespace, "components".
   allow_default_namespace_reuse: true

components.services.yml

 services:
   components.registry:
     class: Drupal\components\Template\ComponentsRegistry
-    arguments: ['@extension.list.module', '@extension.list.theme', '@module_handler', '@theme.manager', '@cache.default', '@file_system']
+    arguments: ['@extension.list.module', '@extension.list.theme', '@module_handler', '@theme.manager', '@cache.bootstrap', '@file_system']
 
   components.twig.loader:
     class: Drupal\components\Template\Loader\ComponentsLoader

composer.json

@@ -11,6 +11,6 @@
         }
     ],
     "require": {
-      "drupal/core": "^9 || ^10"
+      "drupal/core": "^10.2 || ^11"
     }
 }

src/Template/ComponentsRegistry.php

@@ -92,7 +92,7 @@ class ComponentsRegistry {
     ModuleHandlerInterface $moduleHandler,
     ThemeManagerInterface $themeManager,
     CacheBackendInterface $cache,
-    FileSystemInterface $fileSystem
+    FileSystemInterface $fileSystem,
   ) {
     $this->moduleExtensionList = $moduleExtensionList;
     $this->themeExtensionList = $themeExtensionList;
@@ -147,7 +147,7 @@ class ComponentsRegistry {
             // Get a listing of all Twig files in the namespace path.
             $files = $this->fileSystem->scanDirectory($nameSpacePath, $regex);
           }
-          catch (NotRegularDirectoryException $exception) {
+          catch (NotRegularDirectoryException) {
             $this->logWarning(sprintf('The "@%s" namespace contains a path, "%s", that is not a directory.',
               $nameSpace,
               $nameSpacePath,

src/Template/Loader/ComponentsLoader.php

@@ -6,6 +6,8 @@ use Drupal\components\Template\ComponentsRegistry;
 use Twig\Error\LoaderError;
 use Twig\Loader\FilesystemLoader;
 
+// cspell:ignore mycomponents mythemeComponents
+
 /**
  * Loads namespaced templates from the filesystem.
  *

src/Template/TwigExtension.php

@@ -7,6 +7,8 @@ use Twig\Extension\AbstractExtension;
 use Twig\TwigFilter;
 use Twig\TwigFunction;
 
+// cspell:ignore domo ponycorn
+
 /**
  * A class providing components' Twig extensions.
  */
@@ -17,7 +19,7 @@ class TwigExtension extends AbstractExtension {
    */
   public function getFunctions(): array {
     return [
-      new TwigFunction('template', [$this, 'template'], ['is_variadic' => TRUE]),
+      new TwigFunction('template', $this->template(...), ['is_variadic' => TRUE]),
     ];
   }
 
@@ -124,7 +126,7 @@ class TwigExtension extends AbstractExtension {
    *   When $element is not an array or "Traversable".
    */
   public static function recursiveMergeFilter($element, $array): array {
-    if (!twig_test_iterable($element)) {
+    if (!is_iterable($element)) {
       throw new RuntimeError(sprintf('The recursive_merge filter only works on arrays or "Traversable" objects, got "%s".', gettype($element)));
     }
 
@@ -160,7 +162,7 @@ class TwigExtension extends AbstractExtension {
    *   When $element is not an array or "Traversable".
    */
   public static function setFilter($element, string $at, $value) {
-    if (!twig_test_iterable($element)) {
+    if (!is_iterable($element)) {
       throw new RuntimeError(sprintf('The "set" filter only works on arrays or "Traversable" objects, got "%s".', gettype($element)));
     }
 
@@ -202,7 +204,7 @@ class TwigExtension extends AbstractExtension {
    *   When $element is not an array or "Traversable".
    */
   public static function addFilter($element, string $at, $value = NULL, $values = NULL) {
-    if (!twig_test_iterable($element)) {
+    if (!is_iterable($element)) {
       throw new RuntimeError(sprintf('The "add" filter only works on arrays or "Traversable" objects, got "%s".', gettype($element)));
     }
 

tests/modules/components_test/components_test.module

 <?php
 
+/**
+ * @file
+ * Components test module.
+ */
+
+declare(strict_types=1);
+
 /**
  * @file
  * Test module.

tests/modules/components_twig_extension_test/components_twig_extension_test.module

 <?php
 
+/**
+ * @file
+ * Components Twig extension test module.
+ */
+
+declare(strict_types=1);
+
 /**
  * @file
  * Test module.

tests/src/Functional/ComponentsTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\components\Functional;
 
 use Drupal\Tests\BrowserTestBase;
@@ -39,24 +41,19 @@ class ComponentsTest extends BrowserTestBase {
    *   The rendered string output (typically HTML).
    */
   protected function render(array &$elements): string {
-    return $this->container->get('renderer')->renderRoot($elements);
+    return (string) $this->container->get('renderer')->renderRoot($elements);
   }
 
   /**
    * Ensures component templates can be loaded inside a Drupal instance.
    */
   public function testLoadTemplate() {
-    try {
-      $element = [
-        // The templates/components-test.html.twig file determines which
-        // templates are loaded.
-        '#theme' => 'components_test',
-      ];
-      $result = $this->render($element);
-    }
-    catch (\Exception $e) {
-      $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
-    }
+    $element = [
+      // The templates/components-test.html.twig file determines which
+      // templates are loaded.
+      '#theme' => 'components_test',
+    ];
+    $result = $this->render($element);
 
     // The following templates are in paths defined in .info namespace
     // definitions.

tests/src/Kernel/ComponentsKernelTestBase.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\components\Kernel;
 
 use Drupal\Core\DependencyInjection\ContainerBuilder;
@@ -36,7 +38,7 @@ abstract class ComponentsKernelTestBase extends KernelTestBase {
       throw new \Exception(__METHOD__ . ' requires system module to be installed.');
     }
 
-    return $this->container->get('renderer')->renderRoot($elements);
+    return (string) $this->container->get('renderer')->renderRoot($elements);
   }
 
 }

tests/src/Kernel/TwigExtensionTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\components\Kernel;
 
 /**
@@ -38,6 +40,8 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
       $result = $this->render($element);
     }
     catch (\Exception $e) {
+      // @todo Fix in https://www.drupal.org/project/components/issues/3473207
+      // @phpstan-ignore method.notFound
       $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
     }
     $this->assertStringContainsString('<ul><li>first item</li><li>second item</li></ul>', $result);
@@ -70,6 +74,8 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
       $result = $this->render($element);
     }
     catch (\Exception $e) {
+      // @todo Fix in https://www.drupal.org/project/components/issues/3473207
+      // @phpstan-ignore method.notFound
       $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
     }
     $this->assertStringContainsString($expected, $result);
@@ -80,7 +86,7 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
    *
    * @see testRecursiveMergeFilter()
    */
-  public function providerTestRecursiveMergeFilter(): array {
+  public static function providerTestRecursiveMergeFilter(): array {
     return [
       'Uses positional arguments' => [
         'theme_hook' => 'components_twig_extension_test_recursive_merge_filter',
@@ -120,6 +126,8 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
       $result = $this->render($element);
     }
     catch (\Exception $e) {
+      // @todo Fix in https://www.drupal.org/project/components/issues/3473207
+      // @phpstan-ignore method.notFound
       $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
     }
     $this->assertStringContainsString($expected, $result);
@@ -130,7 +138,7 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
    *
    * @see testSetFilter()
    */
-  public function providerTestSetFilter(): array {
+  public static function providerTestSetFilter(): array {
     return [
       'Uses positional arguments' => [
         'theme_hook' => 'components_twig_extension_test_set_filter',
@@ -169,6 +177,8 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
       $result = $this->render($element);
     }
     catch (\Exception $e) {
+      // @todo Fix in https://www.drupal.org/project/components/issues/3473207
+      // @phpstan-ignore method.notFound
       $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
     }
     $this->assertStringContainsString($expected, $result);
@@ -179,7 +189,7 @@ class TwigExtensionTest extends ComponentsKernelTestBase {
    *
    * @see testAddFilter()
    */
-  public function providerTestAddFilter(): array {
+  public static function providerTestAddFilter(): array {
     return [
       'Uses positional arguments' => [
         'theme_hook' => 'components_twig_extension_test_add_filter',

tests/src/Unit/ComponentsLoaderTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\components\Unit;
 
 use Drupal\components\Template\Loader\ComponentsLoader;
@@ -68,21 +70,21 @@ class ComponentsLoaderTest extends UnitTestCase {
       $result = $this->invokeProtectedMethod($this->systemUnderTest, 'findTemplate', $name, $throw);
 
       if (!$exception) {
-        $this->assertEquals($expected, $result, $this->getName());
+        $this->assertEquals($expected, $result);
       }
     }
     catch (\Exception $e) {
       if ($exception) {
-        $this->assertEquals($exception, $e->getMessage(), $this->getName());
+        $this->assertEquals($exception, $e->getMessage());
         $exception = '';
       }
       else {
-        $this->fail('No exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
+        $this->fail('No exception expected; "' . $e->getMessage() . '"');
       }
     }
 
     if ($exception) {
-      $this->fail('No exception thrown, but "' . $exception . '" was expected during: ' . $this->getName());
+      $this->fail('No exception thrown, but "' . $exception . '"');
     }
   }
 
@@ -91,7 +93,7 @@ class ComponentsLoaderTest extends UnitTestCase {
    *
    * @see testFindTemplate()
    */
-  public function providerTestFindTemplate(): array {
+  public static function providerTestFindTemplate(): array {
     return [
       'error when template name has no @' => [
         'name' => 'n/template.twig',
@@ -176,7 +178,7 @@ class ComponentsLoaderTest extends UnitTestCase {
     $this->systemUnderTest = new ComponentsLoader($componentsRegistry);
 
     $result = $this->systemUnderTest->exists($template);
-    $this->assertEquals($expected, $result, $this->getName());
+    $this->assertEquals($expected, $result);
   }
 
   /**
@@ -184,7 +186,7 @@ class ComponentsLoaderTest extends UnitTestCase {
    *
    * @see testExists()
    */
-  public function providerTestExists(): array {
+  public static function providerTestExists(): array {
     return [
       'confirms a template does exist' => [
         'template' => '@ns/example-exists.twig',

tests/src/Unit/TwigExtensionFiltersTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\components\Unit;
 
 use Drupal\components\Template\TwigExtension;
@@ -81,15 +83,9 @@ class TwigExtensionFiltersTest extends UnitTestCase {
    * @dataProvider providerTestRecursiveMergeFilter
    */
   public function testRecursiveMergeFilter(array $element, array $value, array $expected) {
-    $result = NULL;
-    try {
-      $result = TwigExtension::recursiveMergeFilter($element, $value);
-    }
-    catch (\Exception $e) {
-      $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
-    }
-    $this->assertEquals($expected, $result, $this->getName());
-    $this->assertEquals(array_replace_recursive($element, $value), $result, $this->getName());
+    $result = TwigExtension::recursiveMergeFilter($element, $value);
+    $this->assertEquals($expected, $result);
+    $this->assertEquals(array_replace_recursive($element, $value), $result);
   }
 
   /**
@@ -97,7 +93,7 @@ class TwigExtensionFiltersTest extends UnitTestCase {
    *
    * @see testRecursiveMergeFilter()
    */
-  public function providerTestRecursiveMergeFilter(): array {
+  public static function providerTestRecursiveMergeFilter(): array {
     return [
       'Recursively sets values' => [
         'element' => [
@@ -171,14 +167,8 @@ class TwigExtensionFiltersTest extends UnitTestCase {
    * @dataProvider providerTestSetFilter
    */
   public function testSetFilter(array $element, string $at, $value, array $expected) {
-    $result = NULL;
-    try {
-      $result = TwigExtension::setFilter($element, $at, $value);
-    }
-    catch (\Exception $e) {
-      $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
-    }
-    $this->assertEquals($expected, $result, $this->getName());
+    $result = TwigExtension::setFilter($element, $at, $value);
+    $this->assertEquals($expected, $result);
   }
 
   /**
@@ -186,7 +176,7 @@ class TwigExtensionFiltersTest extends UnitTestCase {
    *
    * @see testSetFilter()
    */
-  public function providerTestSetFilter(): array {
+  public static function providerTestSetFilter(): array {
     return [
       'Sets a new value' => [
         'element' => [
@@ -286,6 +276,8 @@ class TwigExtensionFiltersTest extends UnitTestCase {
       $result = TwigExtension::addFilter($element, $at, $value);
     }
     catch (\Exception $e) {
+      // @todo Fix in https://www.drupal.org/project/components/issues/3473207
+      // @phpstan-ignore method.notFound
       $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
     }
     $this->assertEquals($expected, $result, 'Failed to replace a value.');
@@ -296,7 +288,7 @@ class TwigExtensionFiltersTest extends UnitTestCase {
    *
    * @see testAddFilter()
    */
-  public function providerTestAddFilter(): array {
+  public static function providerTestAddFilter(): array {
     return [
       'replacing a value' => [
         'at' => 'element.#attributes.id',

tests/src/Unit/TwigExtensionFunctionsTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\components\Unit;
 
 use Drupal\components\Template\TwigExtension;
@@ -103,7 +105,7 @@ class TwigExtensionFunctionsTest extends UnitTestCase {
     string $template,
     array $variables,
     array $expected,
-    string $rendered_output
+    string $rendered_output,
   ) {
     $this->renderer
       ->expects($this->exactly(1))
@@ -111,14 +113,8 @@ class TwigExtensionFunctionsTest extends UnitTestCase {
       ->with($expected)
       ->willReturn($rendered_output);
 
-    $result = NULL;
-    try {
-      $result = $this->twigEnvironment->render($template, $variables);
-    }
-    catch (\Exception $e) {
-      $this->fail('No Exception expected; "' . $e->getMessage() . '" thrown during: ' . $this->getName());
-    }
-    $this->assertEquals($rendered_output, $result, $this->getName());
+    $result = $this->twigEnvironment->render($template, $variables);
+    $this->assertEquals($rendered_output, $result);
   }
 
   /**
@@ -126,7 +122,7 @@ class TwigExtensionFunctionsTest extends UnitTestCase {
    *
    * @see testTemplate()
    */
-  public function providerTestTemplate(): array {
+  public static function providerTestTemplate(): array {
     $link = [
       '#type' => 'link',
       '#title' => 'example link',

tests/themes/components_test_base_theme/components_test_base_theme.info.yml

 name: Components test base theme
 type: theme
 base theme: stable9
-core_version_requirement: ^9 || ^10
+core_version_requirement: ^9 || ^10 || ^11
 description: Theme for testing Components functionality.
 components:
   namespaces:

tests/themes/components_test_theme/components_test_theme.info.yml

 name: Components test theme
 type: theme
 base theme: components_test_base_theme
-core_version_requirement: ^9 || ^10
+core_version_requirement: ^9 || ^10 || ^11
 description: Theme for testing Components functionality.
 components:
   namespaces: