diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 1091c55..8037f3f 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -1,5 +1,10 @@
 on: pull_request
+
 name: Review
+
+env:
+  COMPOSE_USER: runner
+
 jobs:
   changelog:
     runs-on: ubuntu-latest
@@ -8,7 +13,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 2
 
@@ -17,94 +22,55 @@ jobs:
 
       - name: Check that changelog has been updated.
         run: git diff --exit-code origin/${{ github.base_ref }} -- CHANGELOG.md && exit 1 || exit 0
-  test-composer-files:
-    name: Validate composer
+
+  composer-validate:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        php-versions: [ '8.1' ]
-        dependency-version: [ prefer-lowest, prefer-stable ]
     steps:
-      - uses: actions/checkout@master
-      - name: Setup PHP, with composer and extensions
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php-versions }}
-          extensions: json
-          coverage: none
-          tools: composer:v2
-      # https://github.com/shivammathur/setup-php#cache-composer-dependencies
-      - name: Get composer cache directory
-        id: composer-cache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: ${{ runner.os }}-composer-
+      - uses: actions/checkout@v4
       - name: Validate composer files
         run: |
-          composer validate --strict composer.json
-          # Check that dependencies resolve.
-          composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction
-  php-check-coding-standards:
-    name: PHP - Check Coding Standards
+          docker compose run --rm phpfpm composer validate
+      - name: Check that dependencies resolve
+        run: |
+          docker compose run --rm phpfpm composer update
+
+  check-composer-normalize:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        php-versions: [ '8.1' ]
-        dependency-version: [ prefer-lowest, prefer-stable ]
     steps:
-      - uses: actions/checkout@master
-      - name: Setup PHP, with composer and extensions
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php-versions }}
-          extensions: json
-          coverage: none
-          tools: composer:v2
-      # https://github.com/shivammathur/setup-php#cache-composer-dependencies
-      - name: Get composer cache directory
-        id: composer-cache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: ${{ runner.os }}-composer-
-      - name: Install Dependencies
-        run: |
-          composer install --no-interaction --no-progress
-      - name: PHPCS
-        run: |
-          composer coding-standards-check/phpcs
-  php-code-analysis:
-    name: PHP code analysis
+      - uses: actions/checkout@v4
+      - run: |
+          docker compose run --rm phpfpm composer install
+          docker compose run --rm phpfpm composer normalize --dry-run
+
+  coding-standards-check-phpcs:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        php-versions: [ '8.1' ]
     steps:
-      - uses: actions/checkout@master
-      - name: Setup PHP, with composer and extensions
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php-versions }}
-          extensions: json
-          coverage: none
-          tools: composer:v2
-      # https://github.com/shivammathur/setup-php#cache-composer-dependencies
-      - name: Get composer cache directory
-        id: composer-cache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: ${{ runner.os }}-composer-
-      - name: Code analysis
-        run: |
+      - uses: actions/checkout@v4
+      - run: |
+          docker compose run --rm phpfpm composer install
+          docker compose run --rm phpfpm composer coding-standards-check/phpcs
+
+  code-analysis:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
           ./scripts/code-analysis
+
+  proxy-classes:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          ./scripts/generate-proxy-classes
+      - name: Check nothing has changed
+        run: git diff --exit-code
+
+  rector:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          ./scripts/rector
+      - name: Check nothing has changed
+        run: git diff --exit-code
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 208fdcc..9f9c0f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,11 @@ before starting to add changes.
 
 ## [Unreleased]
 
+* [PR-70](https://github.com/itk-dev/itk_pretix/pull/70)
+  Cleaned up and refactored Code
+* [PR-69](https://github.com/itk-dev/itk_pretix/pull/69)
+  Added “Registration deadline” to date
+
 ## 1.2.2
 
 - Allow nullabale pretix client
diff --git a/README.md b/README.md
index 9e78fcd..e68e3d1 100644
--- a/README.md
+++ b/README.md
@@ -49,48 +49,40 @@ The available exporters for a node can be run from
 First, install tools and requirements:
 
 ```sh
-yarn install
+docker compose run --rm node yarn install
 ```
 
 Build for development:
 
 ```sh
-yarn encore dev --watch
+docker compose run --rm node yarn encore dev --watch
 ```
 
 Build for production:
 
 ```sh
-yarn encore production
+docker compose run --rm node yarn encore production
 ```
 
 ## Coding standards
 
 The code must follw the [Drupal Coding Standards](https://www.drupal.org/docs/develop/standards)
 
-Check the coding standards by running
+Apply and check the coding standards by running
 
 ```sh
-composer install
-composer coding-standards-check
-```
-
-Apply the coding standards by running
-
-```sh
-composer coding-standards-apply
+docker compose run --rm phpfpm composer install
+docker compose run --rm phpfpm composer normalize
+docker compose run --rm phpfpm composer coding-standards-apply
+docker compose run --rm phpfpm composer coding-standards-check
 ```
 
 ### Assets
 
-Check the coding standards in assets by running
-
-```sh
-yarn coding-standards-check
-```
-
-Apply the coding standards by running
+Apply and check the coding standards in assets by running
 
 ```sh
-yarn coding-standards-apply
+docker compose run --rm node yarn install
+docker compose run --rm node yarn coding-standards-apply
+docker compose run --rm node yarn coding-standards-check
 ```
diff --git a/compose.yaml b/compose.yaml
new file mode 100644
index 0000000..fcd57b0
--- /dev/null
+++ b/compose.yaml
@@ -0,0 +1,16 @@
+services:
+  phpfpm:
+    image: itkdev/php8.3-fpm:latest
+    user: ${COMPOSE_USER:-deploy}
+    profiles:
+      - dev
+    volumes:
+      - .:/app
+
+  node:
+    image: node:22
+    profiles:
+      - dev
+    working_dir: /app
+    volumes:
+      - .:/app
diff --git a/composer.json b/composer.json
index 662f218..0ab9d7c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,41 +1,25 @@
 {
     "name": "itk-dev/itk_pretix",
-    "type": "drupal-module",
     "description": "A module using pretix API to generate events from field values",
-    "keywords": ["Drupal"],
     "license": "MIT",
-    "minimum-stability": "dev",
+    "type": "drupal-module",
+    "keywords": [
+        "Drupal"
+    ],
     "require": {
-        "php": "^8.1",
-        "nicoeg/dawa": "^1.0",
-        "itk-dev/pretix-api-client-php": "^1.1"
+        "php": "^8.3",
+        "itk-dev/pretix-api-client-php": "^1.1",
+        "nicoeg/dawa": "^1.0"
     },
     "require-dev": {
-        "drupal/coder": "^8.3.1",
-        "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
-        "mglaman/phpstan-drupal": "^1.1",
-        "phpstan/extension-installer": "^1.3",
-        "phpstan/phpstan-deprecation-rules": "^1.1"
-    },
-    "scripts": {
-        "coding-standards-check/phpcs": [
-            "vendor/bin/phpcs --standard=phpcs.xml.dist"
-        ],
-        "coding-standards-check": [
-            "@coding-standards-check/phpcs"
-        ],
-        "coding-standards-apply/phpcs": [
-            "vendor/bin/phpcbf --standard=phpcs.xml.dist"
-        ],
-        "coding-standards-apply": [
-            "@coding-standards-apply/phpcs"
-        ],
-        "code-analysis/phpstan": [
-          "phpstan analyse --configuration=phpstan.neon"
-        ],
-        "code-analysis": [
-          "@code-analysis/phpstan"
-        ]
+        "dealerdirect/phpcodesniffer-composer-installer": "^0.7.1",
+        "drupal/coder": "^8.3",
+        "ergebnis/composer-normalize": "^2.45",
+        "mglaman/phpstan-drupal": "^1.3",
+        "palantirnet/drupal-rector": "^0.20.3",
+        "phpstan/extension-installer": "^1.4",
+        "phpstan/phpstan": "^1.12",
+        "phpstan/phpstan-deprecation-rules": "^1.2"
     },
     "repositories": {
         "drupal": {
@@ -43,10 +27,26 @@
             "url": "https://packages.drupal.org/8"
         }
     },
+    "minimum-stability": "dev",
     "config": {
-      "allow-plugins": {
-        "dealerdirect/phpcodesniffer-composer-installer": true,
-        "phpstan/extension-installer": true
-      }
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "ergebnis/composer-normalize": true,
+            "phpstan/extension-installer": true
+        }
+    },
+    "scripts": {
+        "coding-standards-apply": [
+            "@coding-standards-apply/phpcs"
+        ],
+        "coding-standards-apply/phpcs": [
+            "vendor/bin/phpcbf --standard=phpcs.xml.dist"
+        ],
+        "coding-standards-check": [
+            "@coding-standards-check/phpcs"
+        ],
+        "coding-standards-check/phpcs": [
+            "vendor/bin/phpcs --standard=phpcs.xml.dist"
+        ]
     }
 }
diff --git a/itk_pretix.info.yml b/itk_pretix.info.yml
index 25a5ede..85990b6 100644
--- a/itk_pretix.info.yml
+++ b/itk_pretix.info.yml
@@ -1,7 +1,8 @@
 name: 'ITK Pretix'
 type: module
 description: 'A module using pretix API to generate events from field values'
-core_version_requirement: ^9 || ^10
+# We're autowiring services and need Drupal 10.2 or newer (cf. https://www.drupal.org/node/3366757)
+core_version_requirement: ^10.2
 package: 'ITK'
 dependencies:
   - drupal:field
diff --git a/itk_pretix.install b/itk_pretix.install
index cc8e20d..ecf3f3c 100644
--- a/itk_pretix.install
+++ b/itk_pretix.install
@@ -5,6 +5,8 @@
  * Installation file for the itk_pretix module.
  */
 
+use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
+
 /**
  * Implements hook_schema().
  */
@@ -93,3 +95,73 @@ function itk_pretix_schema() {
     ],
   ];
 }
+
+/**
+ * Implements hook_update_N().
+ */
+function itk_pretix_update_10101(&$sandbox) {
+  _itk_pretix_field_type_add_properties(
+    'pretix_date',
+    [
+      'registration_deadline_value' => [
+        'description' => 'The registration deadline value.',
+        'type' => 'varchar',
+        'length' => 20,
+      ],
+    ]
+  );
+}
+
+/**
+ * Lifted from https://drupal.stackexchange.com/a/295485.
+ */
+function _itk_pretix_field_type_add_properties(string $field_type, array $columns): void {
+  $database_schema = \Drupal::database()->schema();
+
+  $entity_definition_update_manager = \Drupal::entityDefinitionUpdateManager();
+
+  // First, get all fields of the provided field type.
+  $field_map = \Drupal::service('entity_field.manager')
+    ->getFieldMapByFieldType($field_type);
+
+  // Process per entity type (i.e., node, paragraph) all fields.
+  foreach ($field_map as $entity_type_id => $fields) {
+    $entity_type_storage = \Drupal::entityTypeManager()
+      ->getStorage($entity_type_id);
+
+    // Database schema can only be updated, if the values are stored in the
+    // database, of course.
+    if ($entity_type_storage instanceof SqlContentEntityStorage) {
+      foreach (array_keys($fields) as $field_name) {
+        $field_storage_definition = $entity_definition_update_manager->getFieldStorageDefinition($field_name,
+          $entity_type_id);
+
+        // Get the table and column names, according to the field definition.
+        $table_mapping = $entity_type_storage->getTableMapping([
+          $field_name => $field_storage_definition,
+        ]);
+        $table_names = $table_mapping->getDedicatedTableNames();
+        $table_columns = $table_mapping->getColumnNames($field_name);
+
+        // Check if, for the property, the corresponding table exists in the
+        // database. If not, create the table column (according to the schema
+        // provided by the field definition).
+        foreach ($table_names as $table_name) {
+          $table_exists = $database_schema->tableExists($table_name);
+          foreach ($columns as $property => $spec) {
+            $field_exists = $database_schema->fieldExists($table_name,
+              $table_columns[$property]);
+
+            if ($table_exists && !$field_exists) {
+              $database_schema->addField($table_name, $table_columns[$property],
+                $spec);
+            }
+          }
+        }
+
+        // Reflect any changes made to the field storage definition.
+        $entity_definition_update_manager->updateFieldStorageDefinition($field_storage_definition);
+      }
+    }
+  }
+}
diff --git a/itk_pretix.module b/itk_pretix.module
index fdd962a..d7b593f 100644
--- a/itk_pretix.module
+++ b/itk_pretix.module
@@ -6,6 +6,9 @@
  */
 
 use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\itk_pretix\Exporter\Manager as ExporterManager;
+use Drupal\itk_pretix\Exporter\ManagerInterface as ExporterManagerInterface;
+use Drupal\itk_pretix\NodeHelper;
 use Drupal\node\NodeInterface;
 
 /**
@@ -92,33 +95,47 @@ function _itk_pretix_process_datetime_element(array $element) {
  * Implements hook_node_insert().
  */
 function itk_pretix_node_insert(NodeInterface $node) {
-  \Drupal::service('itk_pretix.node_helper')->synchronizeEvent($node, 'insert');
+  _itk_pretix_get_node_helper()->synchronizeEvent($node, 'insert');
 }
 
 /**
  * Implements hook_node_update().
  */
 function itk_pretix_node_update(NodeInterface $node) {
-  \Drupal::service('itk_pretix.node_helper')->synchronizeEvent($node, 'update');
+  _itk_pretix_get_node_helper()->synchronizeEvent($node, 'update');
 }
 
 /**
  * Implements hook_node_delete().
  */
 function itk_pretix_node_delete(NodeInterface $node) {
-  \Drupal::service('itk_pretix.node_helper')->synchronizeEvent($node, 'delete');
+  _itk_pretix_get_node_helper()->synchronizeEvent($node, 'delete');
 }
 
 /**
  * Implements hook_cloned_node_alter().
  */
 function itk_pretix_cloned_node_alter(NodeInterface $node) {
-  \Drupal::service('itk_pretix.node_helper')->clonedNodeAlter($node);
+  _itk_pretix_get_node_helper()->clonedNodeAlter($node);
 }
 
 /**
  * Implements hook_file_download().
  */
 function itk_pretix_file_download($uri) {
-  return \Drupal::service('itk_pretix.exporter_manager')->fileDownload($uri);
+  return _itk_pretix_get_exporter_manager()->fileDownload($uri);
+}
+
+/**
+ * Get node helper.
+ */
+function _itk_pretix_get_node_helper(): NodeHelper {
+  return \Drupal::service(NodeHelper::class);
+}
+
+/**
+ * Get exporter manager.
+ */
+function _itk_pretix_get_exporter_manager(): ExporterManagerInterface {
+  return \Drupal::service(ExporterManager::class);
 }
diff --git a/itk_pretix.services.yml b/itk_pretix.services.yml
index cfa301d..9502d54 100644
--- a/itk_pretix.services.yml
+++ b/itk_pretix.services.yml
@@ -1,61 +1,34 @@
 services:
-  itk_pretix.node_helper:
-    class: Drupal\itk_pretix\NodeHelper
-    arguments:
-      - '@itk_pretix.event_helper'
-      - '@entity_type.manager'
-      - '@module_handler'
-      - '@messenger'
-
-  itk_pretix.event_helper:
-    class: Drupal\itk_pretix\Pretix\EventHelper
-    arguments:
-      - '@database'
-      - '@config.factory'
-      - '@logger.factory'
-      - '@itk_pretix.order_helper'
-      - '@module_handler'
-
-  itk_pretix.order_helper:
-    class: Drupal\itk_pretix\Pretix\OrderHelper
-    arguments:
-      - '@database'
-      - '@config.factory'
-      - '@logger.factory'
-
-  itk_pretix.exporter_manager:
-    class: Drupal\itk_pretix\Exporter\Manager
+  # https://www.drupal.org/node/3366757
+  _defaults:
+    autowire: true
+
+  Drupal\itk_pretix\NodeHelper:
+
+  Drupal\itk_pretix\Pretix\EventHelper:
+
+  Drupal\itk_pretix\Pretix\OrderHelper:
+
+  Drupal\itk_pretix\Exporter\Manager:
     lazy: true
-    arguments:
-      - '@file_system'
-      - '@itk_pretix.access_check'
-      - '@current_user'
-      - '@file_url_generator'
     tags:
       - { name: service_collector, tag: itk_pretix_exporter, call: addEventExporter }
 
-  itk_pretix.exporter.itk_pretix_exporter_check_in_list:
-    class: Drupal\itk_pretix\Exporter\CheckInListExporter
+  Drupal\itk_pretix\Exporter\CheckInListExporter:
     lazy: true
     tags:
       - { name: itk_pretix_exporter }
 
-  itk_pretix.exporter.itk_pretix_exporter_check_in_list_pdf:
-    class: Drupal\itk_pretix\Exporter\CheckInListPdfExporter
+  Drupal\itk_pretix\Exporter\CheckInListPdfExporter:
     lazy: true
     tags:
       - { name: itk_pretix_exporter }
 
-  itk_pretix.exporter.itk_pretix_exporter_orderlist:
-    class: Drupal\itk_pretix\Exporter\OrderListExporter
+  Drupal\itk_pretix\Exporter\OrderListExporter:
     lazy: true
     tags:
       - { name: itk_pretix_exporter }
 
-  itk_pretix.access_check:
-    class: Drupal\itk_pretix\Access\AccessCheck
-    arguments:
-      - '@current_user'
-      - '@current_route_match'
+  Drupal\itk_pretix\Access\AccessCheck:
     tags:
       - { name: access_check, applies_to: _itk_pretix_export_access_check }
diff --git a/phpcs.xml.dist b/phpcs.xml.dist
index a6ac5bd..081d381 100755
--- a/phpcs.xml.dist
+++ b/phpcs.xml.dist
@@ -4,13 +4,16 @@
 
     <file>.</file>
 
+    <exclude-pattern>rector.php</exclude-pattern>
+    <exclude-pattern>src/ProxyClass/</exclude-pattern>
     <exclude-pattern>vendor/</exclude-pattern>
+    <exclude-pattern>node_modules/</exclude-pattern>
 
     <!-- Show progress of the run -->
     <arg value="p"/>
 
     <arg name="extensions" value="php,module,inc,install,test,profile,theme,info,txt,yml"/>
-    <config name="drupal_core_version" value="9"/>
+    <config name="drupal_core_version" value="10"/>
     <rule ref="Drupal">
         <!-- <exclude name="Drupal.Files.TxtFileLineLength.TooLong"/> -->
         <!-- We want to be able to use "package" and "version" in our custom modules -->
diff --git a/rector.php b/rector.php
new file mode 100644
index 0000000..61dcf01
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * @file
+ */
+
+declare(strict_types=1);
+
+use DrupalRector\Set\Drupal10SetList;
+use Rector\Config\RectorConfig;
+
+return RectorConfig::configure()
+  ->withPaths([
+    __DIR__ . '/src',
+    __DIR__ . '/tests',
+  ])
+  ->withSkip([
+    __DIR__ . '/src/ProxyClass',
+  ])
+  ->withSets([
+    Drupal10SetList::DRUPAL_10,
+  ])
+  ->withPhpSets(php83: TRUE)
+  ->withTypeCoverageLevel(0);
diff --git a/scripts/.env b/scripts/.env
new file mode 100644
index 0000000..34c4496
--- /dev/null
+++ b/scripts/.env
@@ -0,0 +1,2 @@
+COMPOSE_PROJECT_NAME=drupal-module
+MODULE_NAME=itk_pretix
diff --git a/scripts/base b/scripts/base
new file mode 100644
index 0000000..7ac4abd
--- /dev/null
+++ b/scripts/base
@@ -0,0 +1,98 @@
+#!/usr/bin/env bash
+set -o errexit -o errtrace -o noclobber -o nounset -o pipefail
+IFS=$'\n\t'
+
+execute_name=execute
+
+usage() {
+  (cat >&2 <<EOF
+--------------------------------------------------------------------------------
+
+Example usage:
+
+#!/usr/bin/env bash
+set -o errexit -o errtrace -o noclobber -o nounset -o pipefail
+IFS=$'\n\t'
+
+script_dir=\$(cd "\$(dirname "\${BASH_SOURCE[0]}")" && pwd)
+
+# The $execute_name function will be invoked in the root of a Drupal 10 installation.
+$execute_name() {
+  echo "Executing!"
+  echo "module_path: \$module_path"
+}
+
+source "\$script_dir/base"
+
+EOF
+  )
+
+  exit 1
+}
+
+# @see https://stackoverflow.com/a/28776166
+if ! (return 0 2>/dev/null); then
+  (cat >&2 <<EOF
+This script (${BASH_SOURCE[0]}) must be sourced!
+
+EOF
+)
+
+  usage
+fi
+
+if [[ $(type -t "$execute_name") != function ]]; then
+  (cat >&2 <<EOF
+Function $execute_name does not exist!
+EOF
+)
+
+  usage
+fi
+
+compose() {
+  docker compose "$@"
+}
+
+shell() {
+  compose exec drupal "$@"
+}
+
+composer() {
+  shell composer "$@"
+}
+
+drush() {
+  shell vendor/bin/drush "$@"
+}
+
+# Extract the module path from the service.
+module_path=$(compose run --rm drupal sh -c 'echo $MODULE_PATH')
+module_name=$(basename "$module_path")
+
+# https://www.man7.org/linux/man-pages/man1/trap.1p.html
+trap teardown EXIT
+
+setup() {
+  compose down --remove-orphans
+  compose pull
+  compose up --detach --remove-orphans --wait
+  composer config --no-plugins allow-plugins true
+  composer config extra.merge-plugin.include "$module_path/composer.json"
+  composer require drush/drush wikimedia/composer-merge-plugin
+  # Reset Drupal installation
+  compose exec drupal sh -c 'find . -name .ht.sqlite -ls -delete; rm web/sites/default/settings.php' || true
+  drush site:install --db-url='sqlite://sites/default/files/.ht.sqlite?module=sqlite' --yes
+  drush pm:install "$module_name"
+}
+
+teardown() {
+  # Remove EXIT trap
+  trap - EXIT
+
+  compose down --remove-orphans
+}
+
+setup
+execute
+teardown
diff --git a/scripts/code-analysis b/scripts/code-analysis
index a370d73..d0bb172 100755
--- a/scripts/code-analysis
+++ b/scripts/code-analysis
@@ -1,35 +1,13 @@
 #!/usr/bin/env bash
-script_dir=$(pwd)
-module_name=$(basename "$script_dir")
-drupal_dir=vendor/drupal-module-code-analysis
-# Relative to $drupal_dir
-module_path=web/modules/contrib/$module_name
+set -o errexit -o errtrace -o noclobber -o nounset -o pipefail
+IFS=$'\n\t'
 
-cd "$script_dir" || exit
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+cd "$script_dir"
 
-drupal_composer() {
-  composer --working-dir="$drupal_dir" --no-interaction "$@"
+execute() {
+  composer require --dev symfony/phpunit-bridge
+  shell vendor/bin/phpstan --configuration="$module_path/phpstan.neon" --memory-limit=256M
 }
 
-# Create new Drupal 9 project
-if [ ! -f "$drupal_dir/composer.json" ]; then
-  composer --no-interaction create-project drupal/recommended-project:^10 "$drupal_dir"
-fi
-# Copy our code into the modules folder
-mkdir -p "$drupal_dir/$module_path"
-# https://stackoverflow.com/a/15373763
-rsync --archive --compress . --filter=':- .gitignore' --exclude "$drupal_dir" --exclude .git "$drupal_dir/$module_path"
-
-drupal_composer config minimum-stability dev
-
-# Allow ALL plugins
-# https://getcomposer.org/doc/06-config.md#allow-plugins
-drupal_composer config --no-plugins allow-plugins true
-
-drupal_composer require wikimedia/composer-merge-plugin
-drupal_composer config extra.merge-plugin.include "$module_path/composer.json"
-# https://www.drupal.org/project/drupal/issues/3220043#comment-14845434
-drupal_composer require --dev symfony/phpunit-bridge
-
-# Run PHPStan
-(cd "$drupal_dir" && vendor/bin/phpstan --configuration="$module_path/phpstan.neon" --memory-limit=256M)
+source "$script_dir/base"
diff --git a/scripts/compose.yaml b/scripts/compose.yaml
new file mode 100644
index 0000000..7de6fe6
--- /dev/null
+++ b/scripts/compose.yaml
@@ -0,0 +1,20 @@
+# https://hub.docker.com/_/drupal/
+
+services:
+  drupal:
+    image: drupal:10-apache
+    ports:
+      - 80
+    volumes:
+      - /var/www/html/modules
+      - /var/www/html/profiles
+      - /var/www/html/themes
+      # this takes advantage of the feature in Docker that a new anonymous
+      # volume (which is what we're creating here) will be initialized with the
+      # existing content of the image at the same location
+      - /var/www/html/sites
+      # Mount our code into the web/modules/contrib folder
+      - ../:/opt/drupal/web/modules/contrib/$MODULE_NAME
+    environment:
+      # Let the module path, i.e. the mounted path, be known in the container
+      MODULE_PATH: web/modules/contrib/$MODULE_NAME
diff --git a/scripts/generate-proxy-classes b/scripts/generate-proxy-classes
new file mode 100755
index 0000000..6129cf8
--- /dev/null
+++ b/scripts/generate-proxy-classes
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -o errexit -o errtrace -o noclobber -o nounset -o pipefail
+IFS=$'\n\t'
+
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+cd "$script_dir"
+
+execute() {
+  classes=(
+    'Drupal\itk_pretix\Exporter\CheckInListExporter'
+    'Drupal\itk_pretix\Exporter\CheckInListPdfExporter'
+    'Drupal\itk_pretix\Exporter\Manager'
+    'Drupal\itk_pretix\Exporter\OrderListExporter'
+  )
+  for class in "${classes[@]}"; do
+    compose exec drupal php web/core/scripts/generate-proxy-class.php "$class" "$module_path/src"
+  done
+}
+
+source "$script_dir/base"
diff --git a/scripts/rector b/scripts/rector
new file mode 100755
index 0000000..658d933
--- /dev/null
+++ b/scripts/rector
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -o errexit -o errtrace -o noclobber -o nounset -o pipefail
+IFS=$'\n\t'
+
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+cd "$script_dir"
+
+execute() {
+  composer require --dev palantirnet/drupal-rector
+  shell vendor/bin/rector --config="$module_path/rector.php"
+}
+
+source "$script_dir/base"
diff --git a/src/Controller/PretixEventExportersController.php b/src/Controller/PretixEventExportersController.php
index 37b3686..7227a0f 100644
--- a/src/Controller/PretixEventExportersController.php
+++ b/src/Controller/PretixEventExportersController.php
@@ -7,12 +7,14 @@
 use Drupal\Core\Url;
 use Drupal\itk_pretix\Exception\ExporterException;
 use Drupal\itk_pretix\Exporter\AbstractExporter;
+use Drupal\itk_pretix\Pretix\EventHelper;
 use Drupal\node\NodeInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Drupal\itk_pretix\Exporter\Manager as ExporterManager;
 
 /**
  * Pretix controller.
@@ -42,10 +44,11 @@ class PretixEventExportersController extends ControllerBase {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function create(ContainerInterface $container) {
     $instance = parent::create($container);
-    $instance->eventHelper = $container->get('itk_pretix.event_helper');
-    $instance->exporterManager = $container->get('itk_pretix.exporter_manager');
+    $instance->eventHelper = $container->get(EventHelper::class);
+    $instance->exporterManager = $container->get(ExporterManager::class);
     $instance->setMessenger($container->get('messenger'));
     $instance->session = $container->get('session');
 
@@ -71,12 +74,10 @@ public function index(Request $request, NodeInterface $node) {
     $enabled = $config->get('event_exporters_enabled');
     $exporters = $this->exporterManager->getEventExporters($enabled);
 
-    $exporterForms = array_map(function (AbstractExporter $exporter) use ($node) {
-        return [
-          'name' => $exporter->getName(),
-          'form' => $this->buildForm($node, $exporter),
-        ];
-    }, $exporters);
+    $exporterForms = array_map(fn(AbstractExporter $exporter) => [
+      'name' => $exporter->getName(),
+      'form' => $this->buildForm($node, $exporter),
+    ], $exporters);
 
     return [
       '#theme' => 'itk_pretix_event_exporters',
diff --git a/src/Controller/PretixWebhookController.php b/src/Controller/PretixWebhookController.php
index 02d2ad4..faaa181 100644
--- a/src/Controller/PretixWebhookController.php
+++ b/src/Controller/PretixWebhookController.php
@@ -50,11 +50,12 @@ class PretixWebhookController extends ControllerBase {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function create(ContainerInterface $container) {
     $instance = parent::create($container);
-    $instance->orderHelper = $container->get('itk_pretix.order_helper');
-    $instance->nodeHelper = $container->get('itk_pretix.node_helper');
-    $instance->eventHelper = $container->get('itk_pretix.event_helper');
+    $instance->orderHelper = $container->get(OrderHelper::class);
+    $instance->nodeHelper = $container->get(NodeHelper::class);
+    $instance->eventHelper = $container->get(EventHelper::class);
     $instance->database = $container->get('database');
 
     return $instance;
@@ -80,12 +81,10 @@ public function main(Request $request) {
     }
 
     $action = $payload['action'] ?? NULL;
-    switch ($action) {
-      case OrderHelper::PRETIX_EVENT_ORDER_PAID:
-      case OrderHelper::PRETIX_EVENT_ORDER_CANCELED:
-        $this->handleOrderUpdated($payload, $action);
-        break;
-    }
+    match ($action) {
+      OrderHelper::PRETIX_EVENT_ORDER_PAID, OrderHelper::PRETIX_EVENT_ORDER_CANCELED => $this->handleOrderUpdated($payload, $action),
+        default => new JsonResponse($payload),
+    };
 
     return new JsonResponse($payload);
   }
diff --git a/src/Exporter/AbstractExporter.php b/src/Exporter/AbstractExporter.php
index 8108322..55a7435 100644
--- a/src/Exporter/AbstractExporter.php
+++ b/src/Exporter/AbstractExporter.php
@@ -44,6 +44,7 @@ abstract class AbstractExporter extends FormBase implements ExporterInterface {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function getId() {
     if (NULL === static::$id) {
       throw new \RuntimeException(sprintf('Property id not defined in class %s', static::class));
@@ -54,6 +55,7 @@ public function getId() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function getName() {
     if (NULL === static::$name) {
       throw new \RuntimeException(sprintf('Property name not defined in class %s', static::class));
@@ -64,6 +66,7 @@ public function getName() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function getFormId() {
     return 'itk_pretix_exporter_' . $this->getId();
   }
@@ -71,6 +74,7 @@ public function getFormId() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function submitForm(array &$form, FormStateInterface $form_state) {
     throw new \RuntimeException();
   }
@@ -78,6 +82,7 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
   /**
    * Process input parameters.
    */
+  #[\Override]
   public function processInputParameters(array $parameters) {
     unset($parameters['op'], $parameters['form_build_id'], $parameters['form_token'], $parameters['form_id']);
 
@@ -87,6 +92,7 @@ public function processInputParameters(array $parameters) {
   /**
    * Get pretix client.
    */
+  #[\Override]
   public function setPretixClient(Client $client) {
     $this->client = $client;
 
@@ -96,6 +102,7 @@ public function setPretixClient(Client $client) {
   /**
    * Set event info.
    */
+  #[\Override]
   public function setEventInfo(array $eventInfo) {
     $this->eventInfo = $eventInfo;
 
@@ -164,9 +171,7 @@ private function getCheckInLists() {
 
     if (!isset(self::$checkInLists[$event])) {
       $defaultName = 'exporter check-in list (do not delete)';
-      $isDefaultList = static function (CheckInList $list) use ($defaultName) {
-        return $defaultName === $list->getName();
-      };
+      $isDefaultList = static fn(CheckInList $list) => $defaultName === $list->getName();
       $checkInLists = $this->client->getCheckInLists($event);
       $defaultList = $checkInLists->filter($isDefaultList)->first();
       if (!$defaultList) {
@@ -179,9 +184,7 @@ private function getCheckInLists() {
         $checkInLists->add($defaultList);
       }
 
-      [$head, $tail] = $checkInLists->partition(static function ($key, $list) use ($isDefaultList) {
-          return $isDefaultList($list);
-      });
+      [$head, $tail] = $checkInLists->partition(static fn($key, $list) => $isDefaultList($list));
 
       // Make sure that the default list is first in collection.
       self::$checkInLists[$event] = new ArrayCollection(
diff --git a/src/Exporter/CheckInListExporter.php b/src/Exporter/CheckInListExporter.php
index d1d35b7..5bfd75f 100644
--- a/src/Exporter/CheckInListExporter.php
+++ b/src/Exporter/CheckInListExporter.php
@@ -21,6 +21,7 @@ class CheckInListExporter extends AbstractExporter {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function buildForm(array $form, FormStateInterface $form_state) {
     $formats = [
       'xlsx' => $this->t('Excel (.xlsx)'),
@@ -48,6 +49,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function processInputParameters(array $parameters) {
     $parameters = parent::processInputParameters($parameters);
     // Make sure that questions is set.
diff --git a/src/Exporter/CheckInListPdfExporter.php b/src/Exporter/CheckInListPdfExporter.php
index 46310f8..c1443c2 100644
--- a/src/Exporter/CheckInListPdfExporter.php
+++ b/src/Exporter/CheckInListPdfExporter.php
@@ -21,6 +21,7 @@ class CheckInListPdfExporter extends CheckInListExporter {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function buildForm(array $form, FormStateInterface $form_state) {
     $form = parent::buildForm($form, $form_state);
     unset($form['_format']);
@@ -31,6 +32,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function processInputParameters(array $parameters) {
     $parameters = parent::processInputParameters($parameters);
     // Make sure that questions is set.
diff --git a/src/Exporter/Manager.php b/src/Exporter/Manager.php
index 9a03c73..803fe2e 100644
--- a/src/Exporter/Manager.php
+++ b/src/Exporter/Manager.php
@@ -2,8 +2,10 @@
 
 namespace Drupal\itk_pretix\Exporter;
 
+use Drupal\Core\File\FileExists;
 use Drupal\Core\File\FileSystem;
-use Drupal\Core\File\FileUrlGenerator;
+use Drupal\Core\File\FileSystemInterface;
+use Drupal\Core\File\FileUrlGeneratorInterface;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
 use Drupal\itk_pretix\Access\AccessCheck;
@@ -15,7 +17,7 @@
  * Exporter manager.
  */
 class Manager implements ManagerInterface {
-  private const EXPORTER_RESULT_BASE_URL = 'private://itk_pretix/exporters';
+  private const string EXPORTER_RESULT_BASE_URL = 'private://itk_pretix/exporters';
 
   use StringTranslationTrait;
 
@@ -37,15 +39,16 @@ class Manager implements ManagerInterface {
    * Constructor.
    */
   public function __construct(
-    private readonly FileSystem $fileSystem,
+    private readonly FileSystemInterface $fileSystem,
     private readonly AccessCheck $accessCheck,
     private readonly AccountInterface $currentUser,
-    private readonly FileUrlGenerator $fileUrlGenerator
+    private readonly FileUrlGeneratorInterface $fileUrlGenerator,
   ) {}
 
   /**
    * Add an event exporter.
    */
+  #[\Override]
   public function addEventExporter(ExporterInterface $exporter, $priority = 0) {
     $this->eventExporters[$exporter->getId()] = $exporter;
     $this->eventExporterForms[$exporter->getFormId()] = $exporter;
@@ -56,15 +59,15 @@ public function addEventExporter(ExporterInterface $exporter, $priority = 0) {
   /**
    * Get event exporters.
    */
-  public function getEventExporters(array $ids = NULL) {
-    return array_filter($this->eventExporters, static function (ExporterInterface $exporter) use ($ids) {
-        return NULL === $ids || in_array($exporter->getId(), $ids, TRUE);
-    });
+  #[\Override]
+  public function getEventExporters(?array $ids = NULL) {
+    return array_filter($this->eventExporters, static fn(ExporterInterface $exporter) => NULL === $ids || in_array($exporter->getId(), $ids, TRUE));
   }
 
   /**
    * Get event exporter.
    */
+  #[\Override]
   public function getEventExporter(string $id) {
     return $this->eventExporters[$id] ?? NULL;
   }
@@ -72,17 +75,18 @@ public function getEventExporter(string $id) {
   /**
    * Save exporter result to local file system.
    */
+  #[\Override]
   public function saveExporterResult(NodeInterface $node, Response $response) {
     $header = $response->getHeaderLine('content-disposition');
     if (preg_match('/filename="(?<filename>[^"]+)"/', $header, $matches)) {
       $filename = $matches['filename'];
 
       $url = $this->getExporterResultFileUrl($node, $filename);
-      $directory = dirname($url);
+      $directory = dirname((string) $url);
       $this->fileSystem->prepareDirectory($directory, FileSystem::CREATE_DIRECTORY);
       $filePath = $this->fileSystem->realpath($url);
-      $this->fileSystem->saveData((string) $response->getBody(), $filePath, FileSystem::EXISTS_REPLACE);
-      $this->fileSystem->saveData(json_encode($response->getHeaders()), $filePath . '.headers', FileSystem::EXISTS_REPLACE);
+      $this->fileSystem->saveData((string) $response->getBody(), $filePath, FileExists::Replace);
+      $this->fileSystem->saveData(json_encode($response->getHeaders()), $filePath . '.headers', FileExists::Replace);
 
       return $this->fileUrlGenerator->generateAbsoluteString($url);
     }
@@ -96,6 +100,7 @@ public function saveExporterResult(NodeInterface $node, Response $response) {
    * @param string $uri
    *   The file uri.
    */
+  #[\Override]
   public function fileDownload(string $uri) {
     $info = $this->getExporterResultFileUrlInfo($uri);
     if (isset($info['nid'])) {
diff --git a/src/Exporter/ManagerInterface.php b/src/Exporter/ManagerInterface.php
index e61e22f..750bfd6 100644
--- a/src/Exporter/ManagerInterface.php
+++ b/src/Exporter/ManagerInterface.php
@@ -24,7 +24,7 @@ public function addEventExporter(ExporterInterface $exporter, $priority = 0);
    * @return array|ExporterInterface[]
    *   The exporters.
    */
-  public function getEventExporters(array $ids = NULL);
+  public function getEventExporters(?array $ids = NULL);
 
   /**
    * Get event exporter.
diff --git a/src/Exporter/OrderListExporter.php b/src/Exporter/OrderListExporter.php
index b79375a..1184572 100644
--- a/src/Exporter/OrderListExporter.php
+++ b/src/Exporter/OrderListExporter.php
@@ -21,6 +21,7 @@ class OrderListExporter extends AbstractExporter {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function buildForm(array $form, FormStateInterface $form_state) {
     $formats = [
       'xlsx' => 'xlsx',
diff --git a/src/Form/PretixConfigForm.php b/src/Form/PretixConfigForm.php
index a227028..ca1ca14 100644
--- a/src/Form/PretixConfigForm.php
+++ b/src/Form/PretixConfigForm.php
@@ -8,6 +8,7 @@
 use Drupal\itk_pretix\Exporter\ManagerInterface as ExporterManagerInterface;
 use Drupal\itk_pretix\Pretix\EventHelper;
 use Drupal\itk_pretix\Pretix\OrderHelper;
+use Drupal\itk_pretix\Exporter\Manager as ExporterManager;
 use ItkDev\Pretix\Api\Client;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
@@ -15,52 +16,36 @@
  * A configuration form for the pretix module.
  */
 final class PretixConfigForm extends ConfigFormBase {
-  /**
-   * The event helper.
-   *
-   * @var \Drupal\itk_pretix\Pretix\EventHelper
-   */
-  private $eventHelper;
-
-  /**
-   * The order helper.
-   *
-   * @var \Drupal\itk_pretix\Pretix\OrderHelper
-   */
-  private $orderHelper;
-
-  /**
-   * The exporter manager.
-   *
-   * @var ExporterManager
-   */
-  private $exporterManager;
 
   /**
    * {@inheritDoc}
    */
-  public function __construct(ConfigFactoryInterface $config_factory, EventHelper $eventHelper, OrderHelper $orderHelper, ExporterManagerInterface $exporterManager) {
+  public function __construct(
+    ConfigFactoryInterface $config_factory,
+    private readonly EventHelper $eventHelper,
+    private readonly OrderHelper $orderHelper,
+    private readonly ExporterManagerInterface $exporterManager,
+  ) {
     parent::__construct($config_factory);
-    $this->eventHelper = $eventHelper;
-    $this->orderHelper = $orderHelper;
-    $this->exporterManager = $exporterManager;
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function create(ContainerInterface $container) {
     return new static(
           $container->get('config.factory'),
-          $container->get('itk_pretix.event_helper'),
-          $container->get('itk_pretix.order_helper'),
-          $container->get('itk_pretix.exporter_manager')
+          $container->get(EventHelper::class),
+          $container->get(OrderHelper::class),
+          $container->get(ExporterManager::class)
       );
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   protected function getEditableConfigNames() {
     return [
       'itk_pretix.pretixconfig',
@@ -70,6 +55,7 @@ protected function getEditableConfigNames() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function getFormId() {
     return 'pretix_config_form';
   }
@@ -77,6 +63,7 @@ public function getFormId() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function buildForm(array $form, FormStateInterface $form_state) {
     $config = $this->config('itk_pretix.pretixconfig');
 
@@ -149,6 +136,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function submitForm(array &$form, FormStateInterface $form_state) {
     parent::submitForm($form, $form_state);
 
@@ -165,6 +153,7 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function validateForm(array &$form, FormStateInterface $form_state) {
     parent::validateForm($form, $form_state);
 
@@ -175,7 +164,7 @@ public function validateForm(array &$form, FormStateInterface $form_state) {
         'api_token' => $form_state->getValue('api_token'),
       ]);
     }
-    catch (\Exception $exception) {
+    catch (\Exception) {
       $form_state->setErrorByName('pretix_url', $this->t('Cannot create pretix api client'));
       return;
     }
@@ -183,19 +172,19 @@ public function validateForm(array &$form, FormStateInterface $form_state) {
     try {
       $client->getOrganizers();
     }
-    catch (\Exception $exception) {
+    catch (\Exception) {
       $form_state->setErrorByName('pretix_url', $this->t('Cannot connect to pretix api'));
       return;
     }
 
-    $templateEventSlugs = array_unique(array_filter(array_map('trim', explode(PHP_EOL, $form_state->getValue('template_event_slugs')))));
+    $templateEventSlugs = array_unique(array_filter(array_map('trim', explode(PHP_EOL, (string) $form_state->getValue('template_event_slugs')))));
     $templateEvents = [];
     foreach ($templateEventSlugs as $eventSlug) {
       try {
         $event = $client->getEvent($eventSlug);
         $templateEvents[$event->getSlug()] = $event;
       }
-      catch (\Exception $exception) {
+      catch (\Exception) {
       }
     }
 
@@ -231,7 +220,7 @@ public function validateForm(array &$form, FormStateInterface $form_state) {
       $this->orderHelper->ensureWebhook($client);
       $this->messenger->addStatus($this->t('pretix webhook created'));
     }
-    catch (\Exception $exception) {
+    catch (\Exception) {
       $form_state->setErrorByName('pretix_url', $this->t('Cannot create webhook in pretix'));
       return;
     }
diff --git a/src/NodeHelper.php b/src/NodeHelper.php
index b7830f4..194c270 100644
--- a/src/NodeHelper.php
+++ b/src/NodeHelper.php
@@ -40,7 +40,7 @@ public function __construct(
     private readonly EventHelper $eventHelper,
     private readonly EntityTypeManagerInterface $entityTypeManager,
     private readonly ModuleHandlerInterface $moduleHandler,
-    MessengerInterface $messenger
+    MessengerInterface $messenger,
   ) {
     $this->setMessenger($messenger);
   }
@@ -117,7 +117,7 @@ public function getTemplateEvents(NodeInterface $node): ArrayCollection|Collecti
         $event = $client->getEvent($slug);
         $events[] = $event;
       }
-      catch (\Exception $exception) {
+      catch (\Exception) {
       }
     }
 
@@ -226,7 +226,7 @@ private function getPretixDates(NodeInterface $node): ?FieldItemListInterface {
 
     if (NULL !== $items) {
       foreach ($items as $item) {
-        foreach (['time_from', 'time_to'] as $key) {
+        foreach (['registration_deadline', 'time_from', 'time_to'] as $key) {
           if (isset($item->{$key}) && is_string($item->{$key})) {
             $item->{$key} = new DrupalDateTime($item->{$key});
           }
diff --git a/src/Plugin/Field/FieldFormatter/PretixDateFormatter.php b/src/Plugin/Field/FieldFormatter/PretixDateFormatter.php
index b90494c..5ac372d 100644
--- a/src/Plugin/Field/FieldFormatter/PretixDateFormatter.php
+++ b/src/Plugin/Field/FieldFormatter/PretixDateFormatter.php
@@ -22,24 +22,26 @@
  */
 final class PretixDateFormatter extends FormatterBase {
 
-  /**
-   * Event helper.
-   *
-   * @var \Drupal\itk_pretix\Pretix\EventHelper
-   */
-  private EventHelper $eventHelper;
-
   /**
    * Class constructor.
    */
-  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, EventHelper $eventHelper) {
+  public function __construct(
+    $plugin_id,
+    $plugin_definition,
+    FieldDefinitionInterface $field_definition,
+    array $settings,
+    $label,
+    $view_mode,
+    array $third_party_settings,
+    private readonly EventHelper $eventHelper,
+  ) {
     parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);
-    $this->eventHelper = $eventHelper;
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
     return new static(
       $plugin_id,
@@ -49,13 +51,14 @@ public static function create(ContainerInterface $container, array $configuratio
       $configuration['label'],
       $configuration['view_mode'],
       $configuration['third_party_settings'],
-      $container->get('itk_pretix.event_helper')
+      $container->get(EventHelper::class)
     );
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function viewElements(FieldItemListInterface $items, $langcode) {
     $elements = [];
 
@@ -67,9 +70,7 @@ public function viewElements(FieldItemListInterface $items, $langcode) {
 
     if (NULL !== $sortField) {
       // Sort ascending.
-      usort($dates, static function (PretixDate $a, PretixDate $b) use ($sortField) {
-          return $a->{$sortField} <=> $b->{$sortField};
-      });
+      usort($dates, static fn(PretixDate $a, PretixDate $b) => $a->{$sortField} <=> $b->{$sortField});
       // Reverse if requested.
       if (0 === strcasecmp('desc', $sortDirection)) {
         $dates = array_reverse($dates);
@@ -83,6 +84,7 @@ public function viewElements(FieldItemListInterface $items, $langcode) {
           'entity' => $items->getEntity(),
           'location' => $item->location,
           'address' => $item->address,
+          'registration_deadline' => $item->registration_deadline,
           'time_from' => $item->time_from,
           'time_to' => $item->time_to,
           'spots' => $item->spots,
diff --git a/src/Plugin/Field/FieldType/PretixDate.php b/src/Plugin/Field/FieldType/PretixDate.php
index 9199743..ed448f8 100644
--- a/src/Plugin/Field/FieldType/PretixDate.php
+++ b/src/Plugin/Field/FieldType/PretixDate.php
@@ -24,6 +24,7 @@
  * @property string uuid
  * @property string location
  * @property string address
+ * @property DateTimeComputed registration_deadline
  * @property DateTimeComputed time_from
  * @property DateTimeComputed time_to
  * @property int spots
@@ -34,6 +35,7 @@ class PretixDate extends FieldItemBase {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
     $properties['uuid'] = DataDefinition::create('string')
       ->setLabel(t('UUID'))
@@ -45,6 +47,16 @@ public static function propertyDefinitions(FieldStorageDefinitionInterface $fiel
       ->setLabel(new TranslatableMarkup('Address'))
       ->setRequired(TRUE);
 
+    $properties['registration_deadline_value'] = DataDefinition::create('datetime_iso8601')
+      ->setLabel(t('Registration deadline value'))
+      ->setRequired(TRUE);
+    $properties['registration_deadline'] = DataDefinition::create('any')
+      ->setLabel(t('Computed registration deadline'))
+      ->setDescription(t('The computed registration deadline DateTime object.'))
+      ->setComputed(TRUE)
+      ->setClass(DateTimeComputed::class)
+      ->setSetting('date source', 'registration_deadline_value');
+
     $properties['time_from_value'] = DataDefinition::create('datetime_iso8601')
       ->setLabel(t('Time from value'))
       ->setRequired(TRUE);
@@ -76,6 +88,7 @@ public static function propertyDefinitions(FieldStorageDefinitionInterface $fiel
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function schema(FieldStorageDefinitionInterface $field_definition) {
     $schema = [
       'columns' => [
@@ -91,6 +104,11 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
           'type' => 'varchar',
           'length' => 255,
         ],
+        'registration_deadline_value' => [
+          'description' => 'The registration deadline value.',
+          'type' => 'varchar',
+          'length' => 20,
+        ],
         'time_from_value' => [
           'description' => 'The time from value.',
           'type' => 'varchar',
@@ -124,6 +142,7 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function isEmpty() {
     $location = $this->get('location')->getValue();
     $timeFrom = $this->get('time_from_value')->getValue();
@@ -134,6 +153,7 @@ public function isEmpty() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function preSave() {
     if (empty($this->get('uuid')->getValue())) {
       $this->get('uuid')->setValue(\Drupal::service('uuid')->generate());
@@ -147,7 +167,7 @@ public function preSave() {
           $this->addData(['coordinates' => $results[0]->adgangspunkt->koordinater]);
         }
       }
-      catch (\Exception $exception) {
+      catch (\Exception) {
       }
     }
   }
diff --git a/src/Plugin/Field/FieldType/PretixEventSettings.php b/src/Plugin/Field/FieldType/PretixEventSettings.php
index 5676ccc..e233fc6 100644
--- a/src/Plugin/Field/FieldType/PretixEventSettings.php
+++ b/src/Plugin/Field/FieldType/PretixEventSettings.php
@@ -25,9 +25,10 @@ class PretixEventSettings extends FieldItemBase {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function propertyDefinitions(
-        FieldStorageDefinitionInterface $field_definition
-    ) {
+    FieldStorageDefinitionInterface $field_definition,
+  ) {
     $properties['template_event'] = DataDefinition::create('string')
       ->setLabel(new TranslatableMarkup('Template event'))
       ->setRequired(TRUE);
@@ -41,9 +42,10 @@ public static function propertyDefinitions(
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function schema(
-        FieldStorageDefinitionInterface $field_definition
-    ) {
+    FieldStorageDefinitionInterface $field_definition,
+  ) {
     return [
       'columns' => [
         'template_event' => [
@@ -61,6 +63,7 @@ public static function schema(
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function isEmpty() {
     return FALSE;
   }
diff --git a/src/Plugin/Field/FieldWidget/PretixDateWidget.php b/src/Plugin/Field/FieldWidget/PretixDateWidget.php
index cd1f8ec..34ffac1 100644
--- a/src/Plugin/Field/FieldWidget/PretixDateWidget.php
+++ b/src/Plugin/Field/FieldWidget/PretixDateWidget.php
@@ -28,24 +28,24 @@
  */
 final class PretixDateWidget extends WidgetBase {
 
-  /**
-   * The event helper.
-   *
-   * @var \Drupal\itk_pretix\Pretix\EventHelper
-   */
-  private EventHelper $eventHelper;
-
   /**
    * Date widget constructor.
    */
-  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, array $third_party_settings, EventHelper $eventHelper) {
+  public function __construct(
+    $plugin_id,
+    $plugin_definition,
+    FieldDefinitionInterface $field_definition,
+    array $settings,
+    array $third_party_settings,
+    private readonly EventHelper $eventHelper,
+  ) {
     parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $third_party_settings);
-    $this->eventHelper = $eventHelper;
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
     return new static(
       $plugin_id,
@@ -53,19 +53,20 @@ public static function create(ContainerInterface $container, array $configuratio
       $configuration['field_definition'],
       $configuration['settings'],
       $configuration['third_party_settings'],
-      $container->get('itk_pretix.event_helper')
+      $container->get(EventHelper::class)
     );
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
     $eventHelper = $this->eventHelper;
     /** @var \Drupal\itk_pretix\Plugin\Field\FieldType\PretixDate $item */
     $item = $items[$delta];
 
-    $element['#element_validate'][] = [$this, 'validate'];
+    $element['#element_validate'][] = $this->validate(...);
     $element['#attributes']['class'][] = 'pretix-date-widget';
     if ($this->hideEndDate()) {
       $element['#attributes']['class'][] = 'hide-end-date';
@@ -98,6 +99,21 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
       '#required' => $element['#required'],
     ];
 
+    $element['registration_deadline_value'] = [
+      '#title' => t('Registration deadline'),
+      '#type' => 'datetime',
+      '#default_value' => NULL,
+      '#date_increment' => 1,
+      '#date_timezone' => date_default_timezone_get(),
+      '#required' => $element['#required'],
+    ];
+
+    if ($items[$delta]->registration_deadline) {
+      /** @var \Drupal\Core\Datetime\DrupalDateTime $registration_deadline */
+      $registration_deadline = $items[$delta]->registration_deadline;
+      $element['registration_deadline_value']['#default_value'] = $this->createDefaultValue($registration_deadline, $element['registration_deadline_value']['#date_timezone']);
+    }
+
     $element['time_from_value'] = [
       '#title' => t('Start time'),
       '#type' => 'datetime',
@@ -216,6 +232,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {
     // The widget form element type has transformed the value to a
     // DrupalDateTime object at this point. We need to convert it back to the
@@ -225,6 +242,14 @@ public function massageFormValues(array $values, array $form, FormStateInterface
     $user_timezone = new \DateTimeZone(date_default_timezone_get());
 
     foreach ($values as &$item) {
+      if (!empty($item['registration_deadline_value']) && $item['registration_deadline_value'] instanceof DrupalDateTime) {
+        /** @var \Drupal\Core\Datetime\DrupalDateTime $time_from */
+        $registration_deadline = $item['registration_deadline_value'];
+
+        // Adjust the date for storage.
+        $item['registration_deadline_value'] = $registration_deadline->setTimezone($storage_timezone)->format($storage_format);
+      }
+
       if (!empty($item['time_from_value']) && $item['time_from_value'] instanceof DrupalDateTime) {
         /** @var \Drupal\Core\Datetime\DrupalDateTime $time_from */
         $time_from = $item['time_from_value'];
@@ -248,6 +273,7 @@ public function massageFormValues(array $values, array $form, FormStateInterface
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function defaultSettings() {
     return [
       'hide_end_date' => FALSE,
@@ -259,6 +285,7 @@ public static function defaultSettings() {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function settingsForm(array $form, FormStateInterface $form_state) {
     $element['hide_end_date'] = [
       '#title' => $this->t('Hide end date'),
@@ -287,6 +314,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function settingsSummary() {
     if ($this->hideEndDate()) {
       $summary[] = $this->t('Hide end date');
@@ -316,12 +344,13 @@ private function roundedTime($seconds) {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function errorElement(
-        array $element,
-        ConstraintViolationInterface $error,
-        array $form,
-        FormStateInterface $form_state
-    ) {
+    array $element,
+    ConstraintViolationInterface $error,
+    array $form,
+    FormStateInterface $form_state,
+  ) {
     $propertyPath = preg_replace('/^\d+\./', '', $error->getPropertyPath());
     return $element[$propertyPath] ?? $element;
   }
@@ -341,12 +370,17 @@ public function errorElement(
    *   The complete form structure.
    */
   public function validate(array &$element, FormStateInterface $form_state, array &$complete_form) {
-    $time_from = $element['time_from_value']['#value']['object'];
-    $time_to = $element['time_to_value']['#value']['object'];
+    $time_from = $element['time_from_value']['#value']['object'] ?? NULL;
+    $time_to = $element['time_to_value']['#value']['object'] ?? NULL;
 
     if ($time_from instanceof DrupalDateTime && $time_to instanceof DrupalDateTime && $time_to < $time_from) {
       $form_state->setError($element['time_to_value'], $this->t('The end time cannot be before the start time'));
     }
+
+    $registration_deadline = $element['registration_deadline_value']['#value']['object'] ?? NULL;
+    if ($registration_deadline instanceof DrupalDateTime && $time_from instanceof DrupalDateTime && $time_from < $registration_deadline) {
+      $form_state->setError($element['registration_deadline_value'], $this->t('The registration deadline must be before the start time'));
+    }
   }
 
   /**
diff --git a/src/Plugin/Field/FieldWidget/PretixEventSettingsWidget.php b/src/Plugin/Field/FieldWidget/PretixEventSettingsWidget.php
index c570b26..7063889 100644
--- a/src/Plugin/Field/FieldWidget/PretixEventSettingsWidget.php
+++ b/src/Plugin/Field/FieldWidget/PretixEventSettingsWidget.php
@@ -24,32 +24,25 @@
  */
 final class PretixEventSettingsWidget extends WidgetBase {
 
-  /**
-   * The event helper.
-   *
-   * @var \Drupal\itk_pretix\Pretix\EventHelper
-   */
-  private EventHelper $eventHelper;
-
-  /**
-   * Thee node helper.
-   *
-   * @var \Drupal\itk_pretix\NodeHelper
-   */
-  private NodeHelper $nodeHelper;
-
   /**
    * Date widget constructor.
    */
-  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, array $third_party_settings, EventHelper $eventHelper, NodeHelper $nodeHelper) {
+  public function __construct(
+    $plugin_id,
+    $plugin_definition,
+    FieldDefinitionInterface $field_definition,
+    array $settings,
+    array $third_party_settings,
+    private readonly EventHelper $eventHelper,
+    private readonly NodeHelper $nodeHelper,
+  ) {
     parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $third_party_settings);
-    $this->eventHelper = $eventHelper;
-    $this->nodeHelper = $nodeHelper;
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
     return new static(
       $plugin_id,
@@ -57,21 +50,22 @@ public static function create(ContainerInterface $container, array $configuratio
       $configuration['field_definition'],
       $configuration['settings'],
       $configuration['third_party_settings'],
-      $container->get('itk_pretix.event_helper'),
-      $container->get('itk_pretix.node_helper')
+      $container->get(EventHelper::class),
+      $container->get(NodeHelper::class)
     );
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function formElement(
-        FieldItemListInterface $items,
-        $delta,
-        array $element,
-        array &$form,
-        FormStateInterface $form_state
-    ) {
+    FieldItemListInterface $items,
+    $delta,
+    array $element,
+    array &$form,
+    FormStateInterface $form_state,
+  ) {
     /** @var \Drupal\node\Entity\Node $node */
     $node = $items->getParent()->getEntity();
     $helper = $this->nodeHelper;
diff --git a/src/Plugin/Validation/Constraint/PretixDateConstraintValidator.php b/src/Plugin/Validation/Constraint/PretixDateConstraintValidator.php
index 5c7ae82..fd222e6 100644
--- a/src/Plugin/Validation/Constraint/PretixDateConstraintValidator.php
+++ b/src/Plugin/Validation/Constraint/PretixDateConstraintValidator.php
@@ -14,6 +14,7 @@ class PretixDateConstraintValidator extends ConstraintValidator {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   public function validate($item, Constraint $constraint) {
     if (!$item instanceof PretixDate || !$constraint instanceof PretixDateConstraint) {
       return;
diff --git a/src/Pretix/AbstractHelper.php b/src/Pretix/AbstractHelper.php
index c7f79d0..9cdef3d 100644
--- a/src/Pretix/AbstractHelper.php
+++ b/src/Pretix/AbstractHelper.php
@@ -43,7 +43,7 @@ abstract class AbstractHelper {
   public function __construct(
     private readonly Connection $database,
     private readonly ConfigFactoryInterface $configFactory,
-    private readonly LoggerChannelFactoryInterface $loggerFactory
+    private readonly LoggerChannelFactoryInterface $loggerFactory,
   ) {
   }
 
@@ -94,7 +94,7 @@ public function getPretixClient(NodeInterface $node): Client {
    * @return array
    *   The configuration.
    */
-  public function getPretixConfiguration(NodeInterface $node = NULL): array {
+  public function getPretixConfiguration(?NodeInterface $node = NULL): array {
     $config = $this->configFactory->get('itk_pretix.pretixconfig');
 
     // @todo Handle node, e.g. to get user specific configuration.
@@ -379,7 +379,7 @@ public function getPretixEventUrl($node, $path = ''): ?string {
   /**
    * Handle a pretix api client exception.
    */
-  protected function clientException(string $message, \Exception $clientException = NULL): SynchronizeException {
+  protected function clientException(string $message, ?\Exception $clientException = NULL): SynchronizeException {
     // @todo Log the exception.
     if (NULL === $clientException) {
       $this->loggerFactory->get('itk_pretix')->error($message);
diff --git a/src/Pretix/EventHelper.php b/src/Pretix/EventHelper.php
index a68575e..e3f04b8 100644
--- a/src/Pretix/EventHelper.php
+++ b/src/Pretix/EventHelper.php
@@ -24,20 +24,6 @@
 class EventHelper extends AbstractHelper {
   public const DATETIME_FORMAT = \DateTime::ATOM;
 
-  /**
-   * The order helper.
-   *
-   * @var \Drupal\itk_pretix\Pretix\OrderHelper
-   */
-  private OrderHelper $orderHelper;
-
-  /**
-   * The module handler interface.
-   *
-   * @var \Drupal\Core\Extension\ModuleHandlerInterface
-   */
-  private ModuleHandlerInterface $moduleHandler;
-
   /**
    * Constructor.
    *
@@ -56,12 +42,10 @@ public function __construct(
     Connection $database,
     ConfigFactoryInterface $configFactory,
     LoggerChannelFactoryInterface $loggerFactory,
-    OrderHelper $orderHelper,
-    ModuleHandlerInterface $moduleHandler
+    private readonly OrderHelper $orderHelper,
+    private readonly ModuleHandlerInterface $moduleHandler,
   ) {
     parent::__construct($database, $configFactory, $loggerFactory);
-    $this->orderHelper = $orderHelper;
-    $this->moduleHandler = $moduleHandler;
   }
 
   /**
@@ -203,7 +187,7 @@ public function synchronizePretixSubEvents(Event $event, NodeInterface $node, Fi
         $pretixSubEventIds[] = $subEvent->getId();
       }
     }
-    catch (\Exception $exception) {
+    catch (\Exception) {
       // @todo Do something clever here.
     }
 
@@ -237,7 +221,7 @@ private function synchronizePretixSubEvent(PretixDate $item, Event $event, NodeI
       $templateSubEvents = $client->getSubEvents($templateEvent);
     }
     catch (\Exception $exception) {
-      throw $this->clientException($this->t('Cannot get template event sub-events'), $exception->getCode(), $exception);
+      throw $this->clientException($this->t('Cannot get template event sub-events'), $exception->getCode());
     }
     if (0 === $templateSubEvents->count()) {
       throw $this->clientException($this->t('Cannot get template event sub-events'));
@@ -290,7 +274,7 @@ private function synchronizePretixSubEvent(PretixDate $item, Event $event, NodeI
       'active' => TRUE,
       'is_public' => TRUE,
       'date_admission' => NULL,
-      'presale_end' => NULL,
+      'presale_end' => $this->formatDate($item->registration_deadline),
       'seating_plan' => NULL,
       'seat_category_mapping' => (object) [],
     ]);
@@ -388,9 +372,7 @@ private function synchronizePretixSubEvent(PretixDate $item, Event $event, NodeI
       $availabilities = $this->orderHelper
         ->setPretixClient($client)
         ->getSubEventAvailabilities($subEvent);
-      $subEventData['availability'] = $availabilities->map(static function (Quota $quota) {
-          return $quota->toArray();
-      })->toArray();
+      $subEventData['availability'] = $availabilities->map(static fn(Quota $quota) => $quota->toArray())->toArray();
     }
     catch (\Exception $exception) {
       $exception->getCode();
@@ -523,7 +505,7 @@ public function validateTemplateEvent(Event $event, Client $client) {
     try {
       $subEvents = $client->getSubEvents($event);
     }
-    catch (\Exception $exception) {
+    catch (\Exception) {
       return [
         'event_slug' => t('Cannot get sub-events.'),
       ];
@@ -539,7 +521,7 @@ public function validateTemplateEvent(Event $event, Client $client) {
     try {
       $quotas = $client->getQuotas($event, ['subevent' => $subEvent->getId()]);
     }
-    catch (\Exception $exception) {
+    catch (\Exception) {
       return [
         'event_slug' => t('Cannot get sub-event quotas.'),
       ];
@@ -601,7 +583,7 @@ public function runExporter(NodeInterface $node, string $identifier, array $para
       throw new ExporterException($response->getReasonPhrase());
     }
 
-    return json_decode($response->getBody(), TRUE);
+    return json_decode((string) $response->getBody(), TRUE);
   }
 
   /**
@@ -668,7 +650,7 @@ private function getEventSlug(NodeInterface $node) {
     $template = $configuration['pretix_event_slug_template'] ?? '!nid';
 
     // Make sure that node id is used in template.
-    if (FALSE === strpos($template, '!nid')) {
+    if (!str_contains((string) $template, '!nid')) {
       $template .= '-!nid';
     }
 
@@ -715,7 +697,7 @@ private function getLocation(PretixDate $item) {
    *
    * @throws \Exception
    */
-  private function getDate($value) {
+  private function getDate(mixed $value) {
     if (NULL === $value) {
       return NULL;
     }
diff --git a/src/Pretix/OrderHelper.php b/src/Pretix/OrderHelper.php
index 1da0a9f..82d7127 100644
--- a/src/Pretix/OrderHelper.php
+++ b/src/Pretix/OrderHelper.php
@@ -154,7 +154,7 @@ private function indexCollection(Collection $collection, string $property) {
    *
    * @throws \Exception
    */
-  public function getOrderLines($order) {
+  public function getOrderLines($order): never {
     throw new \RuntimeException(__METHOD__ . ' not implemented');
   }
 
@@ -164,7 +164,7 @@ public function getOrderLines($order) {
    * @param \Drupal\node\NodeInterface $node
    *   The node.
    */
-  public function getAvailability(NodeInterface $node) {
+  public function getAvailability(NodeInterface $node): never {
     throw new \RuntimeException(__METHOD__ . ' not implemented');
   }
 
diff --git a/src/ProxyClass/Exporter/CheckInListExporter.php b/src/ProxyClass/Exporter/CheckInListExporter.php
index ed059cc..591a565 100644
--- a/src/ProxyClass/Exporter/CheckInListExporter.php
+++ b/src/ProxyClass/Exporter/CheckInListExporter.php
@@ -1,8 +1,8 @@
 <?php
-// @codingStandardsIgnoreFile
+// phpcs:ignoreFile
 
 /**
- * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\CheckInListExporter' "modules/contrib/itk_pretix/src".
+ * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\CheckInListExporter' "web/modules/contrib/itk_pretix/src".
  */
 
 namespace Drupal\itk_pretix\ProxyClass\Exporter {
@@ -187,14 +187,6 @@ public function __wakeup()
             return $this->lazyLoadItself()->__wakeup();
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function setLinkGenerator(\Drupal\Core\Utility\LinkGeneratorInterface $generator)
-        {
-            return $this->lazyLoadItself()->setLinkGenerator($generator);
-        }
-
         /**
          * {@inheritdoc}
          */
@@ -235,14 +227,6 @@ public function setStringTranslation(\Drupal\Core\StringTranslation\TranslationI
             return $this->lazyLoadItself()->setStringTranslation($translation);
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function setUrlGenerator(\Drupal\Core\Routing\UrlGeneratorInterface $generator)
-        {
-            return $this->lazyLoadItself()->setUrlGenerator($generator);
-        }
-
     }
 
 }
diff --git a/src/ProxyClass/Exporter/CheckInListPdfExporter.php b/src/ProxyClass/Exporter/CheckInListPdfExporter.php
index 0c17707..755aa6a 100644
--- a/src/ProxyClass/Exporter/CheckInListPdfExporter.php
+++ b/src/ProxyClass/Exporter/CheckInListPdfExporter.php
@@ -1,8 +1,8 @@
 <?php
-// @codingStandardsIgnoreFile
+// phpcs:ignoreFile
 
 /**
- * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\CheckInListPdfExporter' "modules/contrib/itk_pretix/src".
+ * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\CheckInListPdfExporter' "web/modules/contrib/itk_pretix/src".
  */
 
 namespace Drupal\itk_pretix\ProxyClass\Exporter {
@@ -187,14 +187,6 @@ public function __wakeup()
             return $this->lazyLoadItself()->__wakeup();
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function setLinkGenerator(\Drupal\Core\Utility\LinkGeneratorInterface $generator)
-        {
-            return $this->lazyLoadItself()->setLinkGenerator($generator);
-        }
-
         /**
          * {@inheritdoc}
          */
@@ -235,14 +227,6 @@ public function setStringTranslation(\Drupal\Core\StringTranslation\TranslationI
             return $this->lazyLoadItself()->setStringTranslation($translation);
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function setUrlGenerator(\Drupal\Core\Routing\UrlGeneratorInterface $generator)
-        {
-            return $this->lazyLoadItself()->setUrlGenerator($generator);
-        }
-
     }
 
 }
diff --git a/src/ProxyClass/Exporter/Manager.php b/src/ProxyClass/Exporter/Manager.php
index 2b45cce..5ae48a8 100644
--- a/src/ProxyClass/Exporter/Manager.php
+++ b/src/ProxyClass/Exporter/Manager.php
@@ -1,8 +1,8 @@
 <?php
-// @codingStandardsIgnoreFile
+// phpcs:ignoreFile
 
 /**
- * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\Manager' "modules/contrib/itk_pretix/src".
+ * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\Manager' "web/modules/contrib/itk_pretix/src".
  */
 
 namespace Drupal\itk_pretix\ProxyClass\Exporter {
@@ -78,7 +78,7 @@ public function addEventExporter(\Drupal\itk_pretix\Exporter\ExporterInterface $
         /**
          * {@inheritdoc}
          */
-        public function getEventExporters(array $ids = NULL)
+        public function getEventExporters(?array $ids = NULL)
         {
             return $this->lazyLoadItself()->getEventExporters($ids);
         }
@@ -86,7 +86,7 @@ public function getEventExporters(array $ids = NULL)
         /**
          * {@inheritdoc}
          */
-        public function getEventExporter($id)
+        public function getEventExporter(string $id)
         {
             return $this->lazyLoadItself()->getEventExporter($id);
         }
@@ -102,7 +102,7 @@ public function saveExporterResult(\Drupal\node\NodeInterface $node, \GuzzleHttp
         /**
          * {@inheritdoc}
          */
-        public function fileDownload($uri)
+        public function fileDownload(string $uri)
         {
             return $this->lazyLoadItself()->fileDownload($uri);
         }
diff --git a/src/ProxyClass/Exporter/OrderListExporter.php b/src/ProxyClass/Exporter/OrderListExporter.php
index c09dc3b..dfe38f1 100644
--- a/src/ProxyClass/Exporter/OrderListExporter.php
+++ b/src/ProxyClass/Exporter/OrderListExporter.php
@@ -1,8 +1,8 @@
 <?php
-// @codingStandardsIgnoreFile
+// phpcs:ignoreFile
 
 /**
- * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\OrderListExporter' "modules/contrib/itk_pretix/src".
+ * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\itk_pretix\Exporter\OrderListExporter' "web/modules/contrib/itk_pretix/src".
  */
 
 namespace Drupal\itk_pretix\ProxyClass\Exporter {
@@ -187,14 +187,6 @@ public function __wakeup()
             return $this->lazyLoadItself()->__wakeup();
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function setLinkGenerator(\Drupal\Core\Utility\LinkGeneratorInterface $generator)
-        {
-            return $this->lazyLoadItself()->setLinkGenerator($generator);
-        }
-
         /**
          * {@inheritdoc}
          */
@@ -235,14 +227,6 @@ public function setStringTranslation(\Drupal\Core\StringTranslation\TranslationI
             return $this->lazyLoadItself()->setStringTranslation($translation);
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function setUrlGenerator(\Drupal\Core\Routing\UrlGeneratorInterface $generator)
-        {
-            return $this->lazyLoadItself()->setUrlGenerator($generator);
-        }
-
     }
 
 }
diff --git a/tests/src/Functional/LoadTest.php b/tests/src/Functional/LoadTest.php
index e6cc87a..653c5a3 100644
--- a/tests/src/Functional/LoadTest.php
+++ b/tests/src/Functional/LoadTest.php
@@ -36,6 +36,7 @@ class LoadTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
+  #[\Override]
   protected function setUp(): void {
     parent::setUp();
     $this->user = $this->drupalCreateUser(['administer site configuration']);