diff --git a/composer.json b/composer.json
index 813c5bb..a97cfc4 100644
--- a/composer.json
+++ b/composer.json
@@ -43,9 +43,7 @@
         "10up/phpcs-composer": "^3.0",
         "phpcompatibility/php-compatibility": "dev-develop as 9.99.99",
         "phpunit/php-code-coverage": "^9.2",
-        "slevomat/coding-standard": "^8.15",
-        "rector/rector": "^2.0",
-        "tomasvotruba/type-coverage": "^2.0"
+        "slevomat/coding-standard": "^8.15"
     },
     "scripts": {
         "test": "XDEBUG_MODE=coverage ./vendor/bin/phpunit",
@@ -54,10 +52,6 @@
         "static": [
             "Composer\\Config::disableProcessTimeout",
             "phpstan --memory-limit=1G"
-        ],
-        "rector": [
-            "./vendor/bin/rector",
-            "composer run lint-fix"
         ]
     },
     "config": {
diff --git a/composer.lock b/composer.lock
index f386d5f..7f69bb0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "88da233f8a52d5119878cc443defdcdd",
+    "content-hash": "5c674b2bd34e9e2105a937d69259c184",
     "packages": [
         {
             "name": "amphp/amp",
@@ -2329,95 +2329,6 @@
             ],
             "time": "2025-02-12T12:17:51+00:00"
         },
-        {
-            "name": "nette/utils",
-            "version": "v4.0.8",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/nette/utils.git",
-                "reference": "c930ca4e3cf4f17dcfb03037703679d2396d2ede"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/nette/utils/zipball/c930ca4e3cf4f17dcfb03037703679d2396d2ede",
-                "reference": "c930ca4e3cf4f17dcfb03037703679d2396d2ede",
-                "shasum": ""
-            },
-            "require": {
-                "php": "8.0 - 8.5"
-            },
-            "conflict": {
-                "nette/finder": "<3",
-                "nette/schema": "<1.2.2"
-            },
-            "require-dev": {
-                "jetbrains/phpstorm-attributes": "^1.2",
-                "nette/tester": "^2.5",
-                "phpstan/phpstan-nette": "^2.0@stable",
-                "tracy/tracy": "^2.9"
-            },
-            "suggest": {
-                "ext-gd": "to use Image",
-                "ext-iconv": "to use Strings::webalize(), toAscii(), chr() and reverse()",
-                "ext-intl": "to use Strings::webalize(), toAscii(), normalize() and compare()",
-                "ext-json": "to use Nette\\Utils\\Json",
-                "ext-mbstring": "to use Strings::lower() etc...",
-                "ext-tokenizer": "to use Nette\\Utils\\Reflection::getUseStatements()"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "4.0-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Nette\\": "src"
-                },
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause",
-                "GPL-2.0-only",
-                "GPL-3.0-only"
-            ],
-            "authors": [
-                {
-                    "name": "David Grudl",
-                    "homepage": "https://davidgrudl.com"
-                },
-                {
-                    "name": "Nette Community",
-                    "homepage": "https://nette.org/contributors"
-                }
-            ],
-            "description": "🛠  Nette Utils: lightweight utilities for string & array manipulation, image handling, safe JSON encoding/decoding, validation, slug or strong password generating etc.",
-            "homepage": "https://nette.org",
-            "keywords": [
-                "array",
-                "core",
-                "datetime",
-                "images",
-                "json",
-                "nette",
-                "paginator",
-                "password",
-                "slugify",
-                "string",
-                "unicode",
-                "utf-8",
-                "utility",
-                "validation"
-            ],
-            "support": {
-                "issues": "https://github.com/nette/utils/issues",
-                "source": "https://github.com/nette/utils/tree/v4.0.8"
-            },
-            "time": "2025-08-06T21:43:34+00:00"
-        },
         {
             "name": "nikic/php-parser",
             "version": "v5.4.0",
@@ -3662,65 +3573,6 @@
             ],
             "time": "2024-12-05T13:48:26+00:00"
         },
-        {
-            "name": "rector/rector",
-            "version": "2.0.10",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/rectorphp/rector.git",
-                "reference": "5844a718acb40f40afcd110394270afa55509fd0"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/rectorphp/rector/zipball/5844a718acb40f40afcd110394270afa55509fd0",
-                "reference": "5844a718acb40f40afcd110394270afa55509fd0",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^7.4|^8.0",
-                "phpstan/phpstan": "^2.1.6"
-            },
-            "conflict": {
-                "rector/rector-doctrine": "*",
-                "rector/rector-downgrade-php": "*",
-                "rector/rector-phpunit": "*",
-                "rector/rector-symfony": "*"
-            },
-            "suggest": {
-                "ext-dom": "To manipulate phpunit.xml via the custom-rule command"
-            },
-            "bin": [
-                "bin/rector"
-            ],
-            "type": "library",
-            "autoload": {
-                "files": [
-                    "bootstrap.php"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "description": "Instant Upgrade and Automated Refactoring of any PHP code",
-            "keywords": [
-                "automation",
-                "dev",
-                "migration",
-                "refactoring"
-            ],
-            "support": {
-                "issues": "https://github.com/rectorphp/rector/issues",
-                "source": "https://github.com/rectorphp/rector/tree/2.0.10"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/tomasvotruba",
-                    "type": "github"
-                }
-            ],
-            "time": "2025-03-03T17:35:18+00:00"
-        },
         {
             "name": "sebastian/cli-parser",
             "version": "1.0.2",
@@ -5002,63 +4854,6 @@
             ],
             "time": "2024-03-03T12:36:25+00:00"
         },
-        {
-            "name": "tomasvotruba/type-coverage",
-            "version": "2.0.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/TomasVotruba/type-coverage.git",
-                "reference": "d033429580f2c18bda538fa44f2939236a990e0c"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/TomasVotruba/type-coverage/zipball/d033429580f2c18bda538fa44f2939236a990e0c",
-                "reference": "d033429580f2c18bda538fa44f2939236a990e0c",
-                "shasum": ""
-            },
-            "require": {
-                "nette/utils": "^3.2 || ^4.0",
-                "php": "^7.4 || ^8.0",
-                "phpstan/phpstan": "^2.0"
-            },
-            "type": "phpstan-extension",
-            "extra": {
-                "phpstan": {
-                    "includes": [
-                        "config/extension.neon"
-                    ]
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "TomasVotruba\\TypeCoverage\\": "src"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "description": "Measure type coverage of your project",
-            "keywords": [
-                "phpstan-extension",
-                "static analysis"
-            ],
-            "support": {
-                "issues": "https://github.com/TomasVotruba/type-coverage/issues",
-                "source": "https://github.com/TomasVotruba/type-coverage/tree/2.0.2"
-            },
-            "funding": [
-                {
-                    "url": "https://www.paypal.me/rectorphp",
-                    "type": "custom"
-                },
-                {
-                    "url": "https://github.com/tomasvotruba",
-                    "type": "github"
-                }
-            ],
-            "time": "2025-01-07T00:10:26+00:00"
-        },
         {
             "name": "wp-coding-standards/wpcs",
             "version": "3.1.0",
diff --git a/fixtures/classes/PostTypes/Demo.php b/fixtures/classes/PostTypes/Demo.php
index 8e5c515..410cf46 100644
--- a/fixtures/classes/PostTypes/Demo.php
+++ b/fixtures/classes/PostTypes/Demo.php
@@ -21,7 +21,7 @@ class Demo extends AbstractPostType {
 	 *
 	 * @return string
 	 */
-	public function get_name(): string {
+	public function get_name() {
 		return 'tenup-demo';
 	}
 
@@ -30,7 +30,7 @@ public function get_name(): string {
 	 *
 	 * @return string
 	 */
-	public function get_singular_label(): string {
+	public function get_singular_label() {
 		return esc_html__( 'Demo', 'tenup-plugin' );
 	}
 
@@ -39,7 +39,7 @@ public function get_singular_label(): string {
 	 *
 	 * @return string
 	 */
-	public function get_plural_label(): string {
+	public function get_plural_label() {
 		return esc_html__( 'Demos', 'tenup-plugin' );
 	}
 
@@ -52,7 +52,7 @@ public function get_plural_label(): string {
 	 *
 	 * @return string
 	 */
-	public function get_menu_icon(): string {
+	public function get_menu_icon() {
 		return 'dashicons-chart-pie';
 	}
 
@@ -61,7 +61,7 @@ public function get_menu_icon(): string {
 	 *
 	 * @return bool
 	 */
-	public function can_register(): bool {
+	public function can_register() {
 		return true;
 	}
 
@@ -71,7 +71,7 @@ public function can_register(): bool {
 	 *
 	 * @return array<string>
 	 */
-	public function get_supported_taxonomies(): array {
+	public function get_supported_taxonomies() {
 		return [
 			'tenup-tax-demo',
 		];
@@ -82,7 +82,7 @@ public function get_supported_taxonomies(): array {
 	 *
 	 * @return void
 	 */
-	public function after_register(): void {
+	public function after_register() {
 		// Register any hooks/filters you need.
 	}
 }
diff --git a/fixtures/classes/PostTypes/Page.php b/fixtures/classes/PostTypes/Page.php
index 7815534..fa360d4 100644
--- a/fixtures/classes/PostTypes/Page.php
+++ b/fixtures/classes/PostTypes/Page.php
@@ -24,7 +24,7 @@ class Page extends AbstractCorePostType {
 	 *
 	 * @return string
 	 */
-	public function get_name(): string {
+	public function get_name() {
 		return 'page';
 	}
 
@@ -34,7 +34,7 @@ public function get_name(): string {
 	 *
 	 * @return array<string>
 	 */
-	public function get_supported_taxonomies(): array {
+	public function get_supported_taxonomies() {
 		return [];
 	}
 
@@ -43,7 +43,7 @@ public function get_supported_taxonomies(): array {
 	 *
 	 * @return void
 	 */
-	public function after_register(): void {
+	public function after_register() {
 		// Do nothing.
 	}
 }
diff --git a/fixtures/classes/PostTypes/Post.php b/fixtures/classes/PostTypes/Post.php
index 21c93ab..ce4a28c 100644
--- a/fixtures/classes/PostTypes/Post.php
+++ b/fixtures/classes/PostTypes/Post.php
@@ -24,7 +24,7 @@ class Post extends AbstractCorePostType {
 	 *
 	 * @return string
 	 */
-	public function get_name(): string {
+	public function get_name() {
 		return 'post';
 	}
 
@@ -36,7 +36,7 @@ public function get_name(): string {
 	 *
 	 * @return array<string>
 	 */
-	public function get_supported_taxonomies(): array {
+	public function get_supported_taxonomies() {
 		return [];
 	}
 
@@ -45,7 +45,7 @@ public function get_supported_taxonomies(): array {
 	 *
 	 * @return void
 	 */
-	public function after_register(): void {
+	public function after_register() {
 		// Do nothing.
 	}
 }
diff --git a/fixtures/classes/Standalone/Standalone.php b/fixtures/classes/Standalone/Standalone.php
index 94bfdb7..d52c2b8 100644
--- a/fixtures/classes/Standalone/Standalone.php
+++ b/fixtures/classes/Standalone/Standalone.php
@@ -27,7 +27,7 @@ public function __construct() {
 	 *
 	 * @return void
 	 */
-	public function init(): void {
+	public function init() {
 		echo 'Hello from the Standalone class!';
 	}
 }
diff --git a/fixtures/classes/Taxonomies/Demo.php b/fixtures/classes/Taxonomies/Demo.php
index 281dc6b..de86cc6 100644
--- a/fixtures/classes/Taxonomies/Demo.php
+++ b/fixtures/classes/Taxonomies/Demo.php
@@ -21,7 +21,7 @@ class Demo extends AbstractTaxonomy {
 	 *
 	 * @return string
 	 */
-	public function get_name(): string {
+	public function get_name() {
 		return 'tenup-tax-demo';
 	}
 
@@ -30,7 +30,7 @@ public function get_name(): string {
 	 *
 	 * @return string
 	 */
-	public function get_singular_label(): string {
+	public function get_singular_label() {
 		return esc_html__( 'Demo Term', 'tenup-plugin' );
 	}
 
@@ -39,7 +39,7 @@ public function get_singular_label(): string {
 	 *
 	 * @return string
 	 */
-	public function get_plural_label(): string {
+	public function get_plural_label() {
 		return esc_html__( 'Demo Terms', 'tenup-plugin' );
 	}
 
@@ -48,7 +48,7 @@ public function get_plural_label(): string {
 	 *
 	 * @return bool
 	 */
-	public function can_register(): bool {
+	public function can_register() {
 		return true;
 	}
 }
diff --git a/phpstan.neon b/phpstan.neon
index b6c7924..4d9795d 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,7 +1,6 @@
 includes:
 	- vendor/szepeviktor/phpstan-wordpress/extension.neon
 	- vendor/phpstan/phpstan-deprecation-rules/rules.neon
-	- vendor/tomasvotruba/type-coverage/config/extension.neon
 
 parameters:
 	paths:
@@ -17,8 +16,3 @@ parameters:
 		- '#^Function remove_filter invoked with [34567] parameters, 2-3 required\.$#'
 		# Remove issues that come from using array as a type rather than string[] or array<string> etc.
 		- '#no value type specified in iterable type array#'
-	type_coverage:
-		return: 99
-		param: 99
-		property: 99
-		constant: 99
diff --git a/rector.php b/rector.php
deleted file mode 100644
index fac46ff..0000000
--- a/rector.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-use Rector\Config\RectorConfig;
-use Rector\TypeDeclaration\Rector\ClassMethod\ReturnTypeFromStrictNativeCallRector;
-
-return RectorConfig::configure()
-    ->withPaths([
-	    __DIR__ . '/src',
-	    __DIR__ . '/fixtures',
-    ])
-	->withSkip([
-		__DIR__ . '/**/node_modules/**',
-		__DIR__ . '/**/vendor/**',
-		__DIR__ . '/**/dist/**',
-
-	])
-    ->withPhpSets(php83: true)
-	->withTypeCoverageLevel(49)
-	->withSkip([
-		Rector\Php81\Rector\Array_\FirstClassCallableRector::class,
-		Rector\Php83\Rector\ClassMethod\AddOverrideAttributeToOverriddenMethodsRector::class,
-		Rector\Php70\Rector\StmtsAwareInterface\IfIssetToCoalescingRector::class,
-		Rector\Php53\Rector\Ternary\TernaryToElvisRector::class,
-		Rector\Php81\Rector\Property\ReadOnlyPropertyRector::class,
-	]);
diff --git a/src/Assets/GetAssetInfo.php b/src/Assets/GetAssetInfo.php
index f2d13a3..5241f31 100644
--- a/src/Assets/GetAssetInfo.php
+++ b/src/Assets/GetAssetInfo.php
@@ -23,22 +23,24 @@ trait GetAssetInfo {
 	 *
 	 * @var ?string
 	 */
-	public ?string $dist_path = null;
+	public $dist_path = null;
 
 	/**
 	 * Fallback version to use if asset file is not found
 	 *
 	 * @var ?string
 	 */
-	public ?string $fallback_version = null;
+	public $fallback_version = null;
 
 	/**
 	 * Setup asset variables
 	 *
 	 * @param string $dist_path        Path to the dist directory
 	 * @param string $fallback_version Fallback version to use if asset file is not found
+	 *
+	 * @return void
 	 */
-	public function setup_asset_vars( string $dist_path, string $fallback_version ): void {
+	public function setup_asset_vars( string $dist_path, string $fallback_version ) {
 		$this->dist_path        = trailingslashit( $dist_path );
 		$this->fallback_version = $fallback_version;
 	}
@@ -53,7 +55,7 @@ public function setup_asset_vars( string $dist_path, string $fallback_version ):
 	 *
 	 * @return string|($attribute is null ? array{version: string, dependencies: array<string>} : $attribute is'dependencies' ? array<string> : string)
 	 */
-	public function get_asset_info( string $slug, ?string $attribute = null ): string|array {
+	public function get_asset_info( string $slug, ?string $attribute = null ) {
 
 		if ( is_null( $this->dist_path ) || is_null( $this->fallback_version ) ) {
 			throw new RuntimeException( 'Asset variables not set. Please run setup_asset_vars() before calling get_asset_info().' );
diff --git a/src/Module.php b/src/Module.php
index a4fc4c7..fc67ebf 100644
--- a/src/Module.php
+++ b/src/Module.php
@@ -20,18 +20,24 @@ trait Module {
 	 * Lower number will be initialized first.
 	 *
 	 * @note This has no correlation to the `init` priority. It's just a way to allow certain classes to be initialized before others.
+	 *
+	 * @return int The priority of the module.
 	 */
-	public function load_order(): int {
+	public function load_order() {
 		return 10;
 	}
 
 	/**
 	 * Checks whether the Module should run within the current context.
+	 *
+	 * @return bool
 	 */
-	abstract public function can_register(): bool;
+	abstract public function can_register();
 
 	/**
 	 * Connects the Module with WordPress using Hooks and/or Filters.
+	 *
+	 * @return void
 	 */
-	abstract public function register(): void;
+	abstract public function register();
 }
diff --git a/src/ModuleInitialization.php b/src/ModuleInitialization.php
index 01271cd..5c53d4b 100644
--- a/src/ModuleInitialization.php
+++ b/src/ModuleInitialization.php
@@ -24,14 +24,16 @@ class ModuleInitialization {
 	/**
 	 * The class instance.
 	 *
-	 * @var ?\TenupFramework\ModuleInitialization
+	 * @var null|ModuleInitialization
 	 */
-	private static ?\TenupFramework\ModuleInitialization $instance = null;
+	private static $instance = null;
 
 	/**
 	 * Get the instance of the class.
+	 *
+	 * @return ModuleInitialization
 	 */
-	public static function instance(): \TenupFramework\ModuleInitialization {
+	public static function instance() {
 		if ( null === self::$instance ) {
 			self::$instance = new self();
 		}
@@ -50,7 +52,7 @@ private function __construct() {
 	 *
 	 * @var array<ModuleInterface>
 	 */
-	protected array $classes = [];
+	protected $classes = [];
 
 	/**
 	 * Get all the TenupFramework plugin classes.
@@ -59,7 +61,7 @@ private function __construct() {
 	 *
 	 * @return array<string>
 	 */
-	public function get_classes( string $dir ): array {
+	public function get_classes( $dir ) {
 		$this->directory_check( $dir );
 
 		// Get all classes from this directory and its subdirectories.
@@ -75,8 +77,7 @@ public function get_classes( string $dir ): array {
 			);
 		}
 
-		// @phpstan-ignore-next-line typeCoverage.paramTypeCoverage
-		$classes = array_filter( $class_finder->get(), fn( $cl ): bool => is_string( $cl ) );
+		$classes = array_filter( $class_finder->get(), fn( $cl ) => is_string( $cl ) );
 
 		// Return the classes
 		return $classes;
@@ -88,8 +89,10 @@ public function get_classes( string $dir ): array {
 	 * @param string $dir The directory to check.
 	 *
 	 * @throws \RuntimeException If the directory does not exist.
+	 *
+	 * @return bool
 	 */
-	protected function directory_check( ?string $dir ): bool {
+	protected function directory_check( $dir ): bool {
 		if ( empty( $dir ) ) {
 			throw new \RuntimeException( 'Directory is required to initialize classes.' );
 		}
@@ -106,12 +109,13 @@ protected function directory_check( ?string $dir ): bool {
 	 * Initialize all the TenupFramework plugin classes.
 	 *
 	 * @param string $dir The directory to search for classes.
+	 *
+	 * @return void
 	 */
-	public function init_classes( ?string $dir = '' ): void {
+	public function init_classes( $dir = '' ) {
 		$this->directory_check( $dir );
 
 		$load_class_order = [];
-		// @phpstan-ignore-next-line argument.type
 		foreach ( $this->get_classes( $dir ) as $class ) {
 			// Create a slug for the class name.
 			$slug = $this->slugify_class_name( $class );
@@ -134,7 +138,7 @@ public function init_classes( ?string $dir = '' ): void {
 			}
 
 			// Check if the class implements ModuleInterface before instantiating it
-			if ( ! $reflection_class->implementsInterface( \TenupFramework\ModuleInterface::class ) ) {
+			if ( ! $reflection_class->implementsInterface( 'TenupFramework\ModuleInterface' ) ) {
 				continue;
 			}
 
@@ -177,6 +181,8 @@ public function init_classes( ?string $dir = '' ): void {
 	 *
 	 * @param string $class_name The name of the class to load.
 	 *
+	 * @return false|ReflectionClass Returns a ReflectionClass instance if the class is loadable, or false if it is not.
+	 *
 	 * @phpstan-ignore missingType.generics
 	 */
 	public function get_fully_loadable_class( string $class_name ): false|ReflectionClass {
@@ -184,7 +190,7 @@ public function get_fully_loadable_class( string $class_name ): false|Reflection
 			// Create a new reflection of the class.
 			// @phpstan-ignore argument.type
 			return new ReflectionClass( $class_name );
-		} catch ( \Throwable ) {
+		} catch ( \Throwable $e ) {
 			// This includes ReflectionException, Error due to missing parent, etc.
 			return false;
 		}
@@ -194,8 +200,10 @@ public function get_fully_loadable_class( string $class_name ): false|Reflection
 	 * Slugify a class name.
 	 *
 	 * @param string $class_name The class name.
+	 *
+	 * @return string
 	 */
-	protected function slugify_class_name( string $class_name ): string {
+	protected function slugify_class_name( $class_name ) {
 		return sanitize_title( str_replace( '\\', '-', $class_name ) );
 	}
 
@@ -203,8 +211,10 @@ protected function slugify_class_name( string $class_name ): string {
 	 * Get a class by its full class name, including namespace.
 	 *
 	 * @param string $class_name The class name & namespace.
+	 *
+	 * @return false|ModuleInterface
 	 */
-	public function get_class( string $class_name ): false|ModuleInterface {
+	public function get_class( $class_name ) {
 		$class_name = $this->slugify_class_name( $class_name );
 
 		if ( isset( $this->classes[ $class_name ] ) ) {
@@ -219,7 +229,7 @@ public function get_class( string $class_name ): false|ModuleInterface {
 	 *
 	 * @return array<ModuleInterface>
 	 */
-	public function get_all_classes(): array {
+	public function get_all_classes() {
 		return $this->classes;
 	}
 
@@ -227,8 +237,10 @@ public function get_all_classes(): array {
 	 * Get an initialized class by its full class name, including namespace.
 	 *
 	 * @param string $class_name The class name including the namespace.
+	 *
+	 * @return false|ModuleInterface
 	 */
-	public static function get_module( string $class_name ): false|ModuleInterface {
+	public static function get_module( $class_name ) {
 		return self::instance()->get_class( $class_name );
 	}
 }
diff --git a/src/ModuleInterface.php b/src/ModuleInterface.php
index b03b7e1..960ec7b 100644
--- a/src/ModuleInterface.php
+++ b/src/ModuleInterface.php
@@ -20,16 +20,22 @@ interface ModuleInterface {
 	 * Lower number will be initialized first.
 	 *
 	 * @note This has no correlation to the `init` priority. It's just a way to allow certain classes to be initialized before others.
+	 *
+	 * @return int The priority of the module.
 	 */
-	public function load_order(): int;
+	public function load_order();
 
 	/**
 	 * Checks whether the Module should run within the current context.
+	 *
+	 * @return bool
 	 */
-	public function can_register(): bool;
+	public function can_register();
 
 	/**
 	 * Connects the Module with WordPress using Hooks and/or Filters.
+	 *
+	 * @return void
 	 */
-	public function register(): void;
+	public function register();
 }
diff --git a/src/PostTypes/AbstractCorePostType.php b/src/PostTypes/AbstractCorePostType.php
index 4a92884..1823423 100644
--- a/src/PostTypes/AbstractCorePostType.php
+++ b/src/PostTypes/AbstractCorePostType.php
@@ -22,8 +22,10 @@ abstract class AbstractCorePostType extends AbstractPostType {
 	 * Get the singular post type label.
 	 *
 	 * No-op for core post types since they are already registered by WordPress.
+	 *
+	 * @return string
 	 */
-	public function get_singular_label(): string {
+	public function get_singular_label() {
 		return '';
 	}
 
@@ -31,8 +33,10 @@ public function get_singular_label(): string {
 	 * Get the plural post type label.
 	 *
 	 * No-op for core post types since they are already registered by WordPress.
+	 *
+	 * @return string
 	 */
-	public function get_plural_label(): string {
+	public function get_plural_label() {
 		return '';
 	}
 
@@ -40,8 +44,10 @@ public function get_plural_label(): string {
 	 * Get the menu icon for the post type.
 	 *
 	 * No-op for core post types since they are already registered by WordPress.
+	 *
+	 * @return string
 	 */
-	public function get_menu_icon(): string {
+	public function get_menu_icon() {
 		return '';
 	}
 
@@ -49,16 +55,23 @@ public function get_menu_icon(): string {
 	 * Checks whether the Module should run within the current context.
 	 *
 	 * True for core post types since they are already registered by WordPress.
+	 *
+	 * @return bool
 	 */
-	public function can_register(): bool {
+	public function can_register() {
 		return true;
 	}
 
 	/**
 	 * Registers a post type and associates its taxonomies.
+	 *
+	 * @uses $this->get_name() to get the post's type name.
+	 * @return Bool Whether this theme has supports for this post type.
 	 */
-	public function register(): void {
+	public function register() {
 		$this->register_taxonomies();
 		$this->after_register();
+
+		return true;
 	}
 }
diff --git a/src/PostTypes/AbstractPostType.php b/src/PostTypes/AbstractPostType.php
index 855ae95..d945df3 100644
--- a/src/PostTypes/AbstractPostType.php
+++ b/src/PostTypes/AbstractPostType.php
@@ -46,18 +46,24 @@ abstract class AbstractPostType implements ModuleInterface {
 
 	/**
 	 * Get the post type name.
+	 *
+	 * @return string
 	 */
-	abstract public function get_name(): string;
+	abstract public function get_name();
 
 	/**
 	 * Get the singular post type label.
+	 *
+	 * @return string
 	 */
-	abstract public function get_singular_label(): string;
+	abstract public function get_singular_label();
 
 	/**
 	 * Get the plural post type label.
+	 *
+	 * @return string
 	 */
-	abstract public function get_plural_label(): string;
+	abstract public function get_plural_label();
 
 	/**
 	 * Get the menu icon for the post type.
@@ -65,20 +71,26 @@ abstract public function get_plural_label(): string;
 	 * This can be a base64 encoded SVG, a dashicons class or 'none' to leave it empty so it can be filled with CSS.
 	 *
 	 * @see https://developer.wordpress.org/resource/dashicons/
+	 *
+	 * @return string
 	 */
-	abstract public function get_menu_icon(): string;
+	abstract public function get_menu_icon();
 
 	/**
 	 * Get the menu position for the post type.
+	 *
+	 * @return int|null
 	 */
-	public function get_menu_position(): int|null {
+	public function get_menu_position() {
 		return null;
 	}
 
 	/**
 	 * Is the post type hierarchical?
+	 *
+	 * @return bool
 	 */
-	public function is_hierarchical(): bool {
+	public function is_hierarchical() {
 		return false;
 	}
 
@@ -87,7 +99,7 @@ public function is_hierarchical(): bool {
 	 *
 	 * @return array<string>
 	 */
-	public function get_editor_supports(): array {
+	public function get_editor_supports() {
 		$supports = [
 			'title',
 			'editor',
@@ -142,7 +154,7 @@ public function get_editor_supports(): array {
 	 *      template_lock?: string|false,
 	 *  }
 	 */
-	public function get_options(): array {
+	public function get_options() {
 		$options = [
 			'labels'            => $this->get_labels(),
 			'public'            => true,
@@ -170,7 +182,7 @@ public function get_options(): array {
 	 *
 	 * @return array<string>
 	 */
-	public function get_labels(): array {
+	public function get_labels() {
 		$plural_label   = $this->get_plural_label();
 		$singular_label = $this->get_singular_label();
 
@@ -213,18 +225,25 @@ public function get_labels(): array {
 
 	/**
 	 * Registers a post type and associates its taxonomies.
+	 *
+	 * @uses $this->get_name() to get the post's type name.
+	 * @return Bool Whether this theme has supports for this post type.
 	 */
-	public function register(): void {
+	public function register() {
 		$this->register_post_type();
 		$this->register_taxonomies();
 
 		$this->after_register();
+
+		return true;
 	}
 
 	/**
 	 * Registers the current post type with WordPress.
+	 *
+	 * @return void
 	 */
-	public function register_post_type(): void {
+	public function register_post_type() {
 		register_post_type(
 			$this->get_name(),
 			$this->get_options()
@@ -233,8 +252,10 @@ public function register_post_type(): void {
 
 	/**
 	 * Registers the taxonomies declared with the current post type.
+	 *
+	 * @return void
 	 */
-	public function register_taxonomies(): void {
+	public function register_taxonomies() {
 		$taxonomies = $this->get_supported_taxonomies();
 
 		$object_type = $this->get_name();
@@ -255,14 +276,16 @@ public function register_taxonomies(): void {
 	 *
 	 * @return array<string>
 	 */
-	public function get_supported_taxonomies(): array {
+	public function get_supported_taxonomies() {
 		return [];
 	}
 
 	/**
 	 * Run any code after the post type has been registered.
+	 *
+	 * @return void
 	 */
-	public function after_register(): void {
+	public function after_register() {
 		// Do nothing.
 	}
 }
diff --git a/src/Taxonomies/AbstractTaxonomy.php b/src/Taxonomies/AbstractTaxonomy.php
index 328b0a2..c3dfdf3 100644
--- a/src/Taxonomies/AbstractTaxonomy.php
+++ b/src/Taxonomies/AbstractTaxonomy.php
@@ -44,30 +44,40 @@ abstract class AbstractTaxonomy implements ModuleInterface {
 	 * Used to alter the order in which classes are initialized.
 	 *
 	 * Lower number will be initialized first.
+	 *
+	 * @return int
 	 */
-	public function load_order(): int {
+	public function load_order() {
 		return 9;
 	}
 
 	/**
 	 * Get the taxonomy name.
+	 *
+	 * @return string
 	 */
-	abstract public function get_name(): string;
+	abstract public function get_name();
 
 	/**
 	 * Get the singular taxonomy label.
+	 *
+	 * @return string
 	 */
-	abstract public function get_singular_label(): string;
+	abstract public function get_singular_label();
 
 	/**
 	 * Get the plural taxonomy label.
+	 *
+	 * @return string
 	 */
-	abstract public function get_plural_label(): string;
+	abstract public function get_plural_label();
 
 	/**
 	 * Is the taxonomy hierarchical?
+	 *
+	 * @return bool
 	 */
-	public function is_hierarchical(): bool {
+	public function is_hierarchical() {
 		return false;
 	}
 
@@ -75,8 +85,9 @@ public function is_hierarchical(): bool {
 	 * Register hooks and actions.
 	 *
 	 * @uses $this->get_name() to get the taxonomy's slug.
+	 * @return bool
 	 */
-	public function register(): void {
+	public function register() {
 		\register_taxonomy(
 			$this->get_name(),
 			$this->get_post_types(),
@@ -84,6 +95,8 @@ public function register(): void {
 		);
 
 		$this->after_register();
+
+		return true;
 	}
 
 	/**
@@ -124,7 +137,7 @@ public function register(): void {
 	 *       _builtin?: bool,
 	 *  }
 	 */
-	public function get_options(): array {
+	public function get_options() {
 		return [
 			'labels'            => $this->get_labels(),
 			'hierarchical'      => $this->is_hierarchical(),
@@ -141,7 +154,7 @@ public function get_options(): array {
 	 *
 	 * @return array<string, string>
 	 */
-	public function get_labels(): array {
+	public function get_labels() {
 		$plural_label   = $this->get_plural_label();
 		$singular_label = $this->get_singular_label();
 
@@ -174,14 +187,16 @@ public function get_labels(): array {
 	 *
 	 * @return array<string>
 	 */
-	public function get_post_types(): array {
+	public function get_post_types() {
 		return [];
 	}
 
 	/**
 	 * Run any code after the taxonomy has been registered.
+	 *
+	 * @return void
 	 */
-	public function after_register(): void {
+	public function after_register() {
 		// Do nothing.
 	}
 }