diff --git a/.gitattributes b/.gitattributes
index 138d01e2..222e4c5e 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -3,3 +3,7 @@
 phpunit.xml export-ignore
 *.md export-ignore
 /tests export-ignore
+/easy-ci.php export-ignore
+/ecs.php export-ignore
+/phpstan.neon export-ignore
+/rector.php export-ignore
\ No newline at end of file
diff --git a/.github/workflows/auto_closer.yaml b/.github/workflows/auto_closer.yaml
deleted file mode 100644
index de9fca80..00000000
--- a/.github/workflows/auto_closer.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-name: Auto Closer PR
-
-on:
-  pull_request_target:
-    types: [opened]
-
-jobs:
-  run:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: superbrothers/close-pull-request@v3
-      with:
-        # Optional. Post a issue comment just before closing a pull request.
-        comment: |
-          Hi, thank you for your contribution.
-
-          Unfortunately, this repository is read-only. It's a split from our main monorepo repository.
-
-          We'd like to kindly ask you to move the contribution there - https://github.com/symplify/symplify.
-
-          We'll check it, review it and give you feed back right way.
-
-          Thank you.
diff --git a/.github/workflows/code_analysis.yaml b/.github/workflows/code_analysis.yaml
new file mode 100644
index 00000000..55c4b3b9
--- /dev/null
+++ b/.github/workflows/code_analysis.yaml
@@ -0,0 +1,65 @@
+name: Code Analysis
+
+on:
+    pull_request: null
+    push:
+        branches:
+            - main
+
+env:
+    # see https://github.com/composer/composer/issues/9368#issuecomment-718112361
+    COMPOSER_ROOT_VERSION: "dev-main"
+
+jobs:
+    code_analysis:
+        strategy:
+            fail-fast: false
+            matrix:
+                actions:
+                    -
+                        name: 'PHPStan'
+                        run: composer phpstan --ansi
+
+                    -
+                        name: 'Composer Validate'
+                        run: composer validate --ansi
+
+                    -
+                        name: 'Rector'
+                        run: composer rector --ansi
+
+                    -
+                        name: 'Coding Standard'
+                        run: composer fix-cs --ansi
+
+                    -
+                        name: 'Tests'
+                        run: vendor/bin/phpunit
+
+                    -
+                        name: 'PHP Linter'
+                        run: vendor/bin/parallel-lint src tests
+
+                    -
+                        name: 'Check Commented Code'
+                        run: vendor/bin/easy-ci check-commented-code src tests --ansi
+
+                    -
+                        name: 'Check Active Classes'
+                        run: vendor/bin/easy-ci check-active-class src --ansi
+
+        name: ${{ matrix.actions.name }}
+        runs-on: ubuntu-latest
+
+        steps:
+            -   uses: actions/checkout@v3
+            # see https://github.com/shivammathur/setup-php
+            -   uses: shivammathur/setup-php@v2
+                with:
+                    php-version: 8.1
+                    coverage: none
+
+            # composer install cache - https://github.com/ramsey/composer-install
+            -   uses: "ramsey/composer-install@v2"
+
+            -   run: ${{ matrix.actions.run }}
diff --git a/.gitignore b/.gitignore
index dfd6caa4..897bee40 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /vendor
-composer.lock
\ No newline at end of file
+composer.lock
+/.phpunit.result.cache
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 18ecd530..7547a5e8 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,16 @@
         "symplify/package-builder": "^11.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.5.26"
+        "php-parallel-lint/php-parallel-lint": "^1.3",
+        "phpstan/extension-installer": "^1.2",
+        "phpunit/phpunit": "^9.5.26",
+        "rector/rector": "^0.15.10",
+        "symplify/easy-ci": "^11.1",
+        "symplify/easy-coding-standard": "^11.1",
+        "symplify/package-builder": "^11.2",
+        "symplify/phpstan-rules": "11.2.3.72",
+        "symplify/symplify-kernel": "^11.2",
+        "tomasvotruba/unused-public": "^0.0.34"
     },
     "autoload": {
         "psr-4": {
@@ -31,22 +40,20 @@
             ]
         }
     },
-    "conflict": {
-        "symplify/phpstan-rules": "<11.1.24",
-        "symplify/easy-testing": "<11.1.25",
-        "symplify/rule-doc-generator-contracts": "<11.1.25",
-        "symplify/php-config-printer": "<11.1.25",
-        "symplify/autowire-array-parameter": "<11.1.25",
-        "symplify/rule-doc-generator": "<11.1.25",
-        "symplify/symfony-static-dumper": "<11.1.25",
-        "symplify/symplify-kernel": "<11.1.25",
-        "symplify/config-transformer": "<11.1.24",
-        "symplify/coding-standard": "<11.1.24",
-        "symplify/easy-parallel": "<11.1.25",
-        "symplify/smart-file-system": "<11.1.25",
-        "symplify/easy-ci": "<11.1.24",
-        "symplify/monorepo-builder": "<11.1.24"
+    "scripts": {
+        "check-cs": "vendor/bin/ecs check --ansi",
+        "fix-cs": "vendor/bin/ecs check --fix --ansi",
+        "phpstan": "vendor/bin/phpstan analyse --ansi  --error-format symplify",
+        "rector": "vendor/bin/rector process --dry-run --ansi"
     },
     "minimum-stability": "dev",
-    "prefer-stable": true
+    "prefer-stable": true,
+    "config": {
+        "sort-packages": true,
+        "platform-check": false,
+        "allow-plugins": {
+            "cweagans/composer-patches": true,
+            "phpstan/extension-installer": true
+        }
+    }
 }
diff --git a/easy-ci.php b/easy-ci.php
new file mode 100644
index 00000000..da45afe6
--- /dev/null
+++ b/easy-ci.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+use Symplify\EasyCI\Config\EasyCIConfig;
+use Symplify\PHPStanExtensions\TypeExtension\FuncCall\NativeFunctionDynamicFunctionReturnTypeExtension;
+use Symplify\PHPStanExtensions\TypeExtension\MethodCall\ContainerGetReturnTypeExtension;
+use Symplify\PHPStanExtensions\TypeExtension\MethodCall\SplFileInfoTolerantReturnTypeExtension;
+
+return static function (EasyCIConfig $easyCIConfig): void {
+    $easyCIConfig->typesToSkip([
+        NativeFunctionDynamicFunctionReturnTypeExtension::class,
+        ContainerGetReturnTypeExtension::class,
+        SplFileInfoTolerantReturnTypeExtension::class,
+    ]);
+};
diff --git a/ecs.php b/ecs.php
new file mode 100644
index 00000000..bb42212e
--- /dev/null
+++ b/ecs.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+use Symplify\EasyCodingStandard\Config\ECSConfig;
+use Symplify\EasyCodingStandard\ValueObject\Set\SetList;
+
+return static function (ECSConfig $ecsConfig): void {
+    $ecsConfig->paths([
+        __DIR__ . '/ecs.php',
+        __DIR__ . '/rector.php',
+        __DIR__ . '/easy-ci.php',
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ]);
+
+    $ecsConfig->sets([
+        SetList::COMMON,
+        SetList::PSR_12,
+    ]);
+};
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 00000000..a84137f1
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,27 @@
+includes:
+    - config/config.neon
+
+parameters:
+    level: 8
+
+    paths:
+        - src
+        - tests
+
+    excludePaths:
+        - '*/tests/**/Source/*'
+        - '*/tests/**/Fixture/*'
+        - '*/tests/**/data/*'
+
+    unused_public:
+        methods: true
+        properties: true
+        constants: true
+
+    ignoreErrors:
+        - '#Calling PHPStan\\Testing\\ErrorFormatterTestCase\:\:(getOutputContent|getOutput|getAnalysisResult)|\(\) is not covered by backward compatibility promise\. The method might change in a minor PHPStan version#'
+        - '#Extending PHPStan\\Testing\\ErrorFormatterTestCase is not covered by backward compatibility promise\. The class might change in a minor PHPStan version#'
+
+        -
+            path: src/ErrorFormatter/SymplifyErrorFormatter.php
+            message: '#Cannot call method writeLineFormatted\(\) on PHPStan\\Command\\Output\|null#'
diff --git a/rector.php b/rector.php
new file mode 100644
index 00000000..8156100a
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\PHPUnit\Set\PHPUnitSetList;
+use Rector\Set\ValueObject\LevelSetList;
+use Rector\Set\ValueObject\SetList;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->sets([
+        SetList::CODE_QUALITY,
+        SetList::DEAD_CODE,
+        LevelSetList::UP_TO_PHP_81,
+        SetList::CODING_STYLE,
+        SetList::TYPE_DECLARATION,
+        SetList::NAMING,
+        SetList::PRIVATIZATION,
+        SetList::EARLY_RETURN,
+        PHPUnitSetList::PHPUNIT_CODE_QUALITY,
+    ]);
+
+    $rectorConfig->paths([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ]);
+
+    $rectorConfig->importNames();
+
+    $rectorConfig->skip([
+        '*/Source/*',
+        '*/Fixture/*',
+    ]);
+};
diff --git a/src/ErrorFormatter/SymplifyErrorFormatter.php b/src/ErrorFormatter/SymplifyErrorFormatter.php
index c8874d97..3fe08631 100644
--- a/src/ErrorFormatter/SymplifyErrorFormatter.php
+++ b/src/ErrorFormatter/SymplifyErrorFormatter.php
@@ -35,7 +35,7 @@ final class SymplifyErrorFormatter implements ErrorFormatter
     private ?Output $output = null;
 
     public function __construct(
-        private Terminal $terminal
+        private readonly Terminal $terminal
     ) {
     }
 
diff --git a/src/TypeExtension/MethodCall/ContainerGetReturnTypeExtension.php b/src/TypeExtension/MethodCall/ContainerGetReturnTypeExtension.php
index a290e23d..91be7d41 100644
--- a/src/TypeExtension/MethodCall/ContainerGetReturnTypeExtension.php
+++ b/src/TypeExtension/MethodCall/ContainerGetReturnTypeExtension.php
@@ -20,7 +20,7 @@
 final class ContainerGetReturnTypeExtension implements DynamicMethodReturnTypeExtension
 {
     public function __construct(
-        private ClassConstFetchReturnTypeResolver $classConstFetchReturnTypeResolver
+        private readonly ClassConstFetchReturnTypeResolver $classConstFetchReturnTypeResolver
     ) {
     }
 
diff --git a/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/Source/ExternalService.php b/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/Source/ExternalService.php
index 8ca54b88..4053d927 100644
--- a/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/Source/ExternalService.php
+++ b/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/Source/ExternalService.php
@@ -6,5 +6,4 @@
 
 final class ExternalService
 {
-
 }
diff --git a/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/data/fixture.php b/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/data/fixture.php
index 64e053a0..b1a8d4b5 100644
--- a/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/data/fixture.php
+++ b/tests/TypeExtension/MethodCall/ContainerGetReturnTypeExtension/data/fixture.php
@@ -6,7 +6,7 @@
 use Symplify\PHPStanExtensions\Tests\TypeExtension\MethodCall\ContainerGetReturnTypeExtension\Source\ExternalService;
 use function PHPStan\Testing\assertType;
 
-class SomeClass
+final class SomeClass
 {
     public function run(ContainerInterface $container): void
     {
diff --git a/tests/TypeExtension/MethodCall/SplFileInfoTolerantReturnTypeExtension/data/fixture.php b/tests/TypeExtension/MethodCall/SplFileInfoTolerantReturnTypeExtension/data/fixture.php
index b61b401f..0106c030 100644
--- a/tests/TypeExtension/MethodCall/SplFileInfoTolerantReturnTypeExtension/data/fixture.php
+++ b/tests/TypeExtension/MethodCall/SplFileInfoTolerantReturnTypeExtension/data/fixture.php
@@ -5,7 +5,7 @@
 use Symfony\Component\Finder\SplFileInfo;
 use function PHPStan\Testing\assertType;
 
-class SomeClass
+final class SomeClass
 {
     public function run(SplFileInfo $splFileInfo): void
     {