diff --git a/rector.php b/rector.php
new file mode 100644
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+++ b/rector.php
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+<?php
+
+declare(strict_types=1);
+
+use Rector\CodeQuality\Rector as CodeQuality;
+use Rector\CodingStyle\Rector as CodingStyle;
+use Rector\Config\RectorConfig;
+use Rector\DeadCode\Rector as DeadCode;
+use Rector\Php71\Rector as Php71;
+use Rector\Php80\Rector as Php80;
+use Rector\Php81\Rector as Php81;
+use Rector\Renaming\Rector as Renaming;
+use Rector\Set\ValueObject\SetList;
+use Rector\Set\ValueObject\LevelSetList;
+use Rector\Transform\Rector as Transform;
+use Rector\TypeDeclaration\Rector as TypeDeclaration;
+use Rector\Visibility\Rector as Visibility;
+
+return static function (RectorConfig $rectorConfig): void
+{
+    $rectorConfig->paths([
+        __DIR__ . '/app',
+//        __DIR__ . '/dev',
+//        __DIR__ . '/errors',
+//        __DIR__ . '/js',
+//        __DIR__ . '/lib',
+//        __DIR__ . '/shell',
+    ]);
+
+    $rectorConfig->sets([
+//        LevelSetList::UP_TO_PHP_81,
+//        SetList::CODE_QUALITY,
+//        SetList::CODING_STYLE,
+//        SetList::DEAD_CODE,
+//        SetList::NAMING,
+//        SetList::TYPE_DECLARATION,
+    ]);
+
+
+    /**
+     * Step by step
+     */
+    $rules = [
+        CodeQuality\Ternary\SwitchNegatedTernaryRector::class => true,
+    ];
+
+    /**
+     * Disabled all rules by now ... too much changes to get its merged
+     *
+     * More progress here;
+     * @see https://github.com/sreichel/openmage-rector
+     */
+    $rulesDisabled = [
+        /**
+         * Change mixed docs type to mixed typed
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#mixedtyperector
+         */
+        Php80\FunctionLike\MixedTypeRector::class => false,
+
+        /**
+         * Add final to constants that does not have children
+         *
+         * do not make constants final
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#finalizepublicclassconstantrector
+         */
+        Php81\ClassConst\FinalizePublicClassConstantRector::class => false,
+
+        /**
+         * Change null to strict string defined function call args
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#nulltostrictstringfunccallargrector
+         */
+        Php81\FuncCall\NullToStrictStringFuncCallArgRector::class => true,
+
+        /**
+         * Convert [$this, "method"] to proper anonymous function
+         * @todo coming
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#callablethisarraytoanonymousfunctionrector
+         */
+        CodeQuality\Array_\CallableThisArrayToAnonymousFunctionRector::class => false,
+
+        /**
+         * Add missing dynamic properties
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#completedynamicpropertiesrector
+         */
+        CodeQuality\Class_\CompleteDynamicPropertiesRector::class => false,
+
+        /**
+         * Joins concat of 2 strings, unless the length is too long
+         * @todo too much changes
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#joinstringconcatrector
+         */
+        CodeQuality\Concat\JoinStringConcatRector::class => false,
+
+        /**
+         * Removes useless variable assigns
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#simplifyuselessvariablerector
+         */
+        CodeQuality\FunctionLike\SimplifyUselessVariableRector::class => true,
+
+        /**
+         * Merges nested if statements
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#combineifrector
+         */
+        CodeQuality\If_\CombineIfRector::class => true,
+
+        /**
+         * Make if conditions more explicit
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#explicitboolcomparerector
+         */
+        CodeQuality\If_\ExplicitBoolCompareRector::class => false,
+
+        /**
+         * Changes if/else for same value as assign to ternary
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#simplifyifelsetoternaryrector
+         */
+        CodeQuality\If_\SimplifyIfElseToTernaryRector::class => true,
+
+        /**
+         * Shortens else/if to elseif
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#shortenelseifrector
+         */
+        CodeQuality\If_\ShortenElseIfRector::class => true,
+
+        /**
+         * Shortens if return false/true to direct return
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#simplifyifreturnboolrector
+         */
+        CodeQuality\If_\SimplifyIfReturnBoolRector::class => true,
+
+        /**
+         * Simplify regex pattern to known ranges
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#simplifyregexpatternrector
+         */
+        CodeQuality\FuncCall\SimplifyRegexPatternRector::class => true,
+
+        /**
+         * Switch negated ternary condition rector
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#switchnegatedternaryrector
+         */
+        CodeQuality\Ternary\SwitchNegatedTernaryRector::class => true,
+
+        /**
+         * Remove and true that has no added value
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#removeandtruerector
+         */
+        DeadCode\BooleanAnd\RemoveAndTrueRector::class => true,
+
+        /**
+         * Remove initialization with null value from property declarations
+         *
+         * keep public $_property = null
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#removenullpropertyinitializationrector
+         */
+        DeadCode\PropertyProperty\RemoveNullPropertyInitializationRector::class => false,
+
+        /**
+         * Remove unused parent call with no parent class
+         *
+         * keep parent::__construct()
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#removeparentcallwithoutparentrector
+         */
+        DeadCode\StaticCall\RemoveParentCallWithoutParentRector::class => false,
+
+        /**
+         * Add #[\ReturnTypeWillChange] attribute to configured instanceof class with methods
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#returntypewillchangerector
+         */
+        Transform\ClassMethod\ReturnTypeWillChangeRector::class => true,
+
+        /**
+         * Add property type based on strict setter and getter method
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#propertytypefromstrictsettergetterrector
+         */
+        TypeDeclaration\Class_\PropertyTypeFromStrictSetterGetterRector::class => true,
+
+        /**
+         * Add missing return type declaration based on parent class method
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#addreturntypedeclarationbasedonparentclassmethodrector
+         */
+        TypeDeclaration\ClassMethod\AddReturnTypeDeclarationBasedOnParentClassMethodRector::class => true,
+
+        /**
+         * Change param type based on parent param type
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#paramtypebyparentcalltyperector
+         */
+        TypeDeclaration\ClassMethod\ParamTypeByParentCallTypeRector::class => true,
+
+        /**
+         * Add "never" return-type for methods that never return anything
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#returnnevertyperector
+         */
+        TypeDeclaration\ClassMethod\ReturnNeverTypeRector::class => true,
+
+        /**
+         * Add return type from return direct array
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#returntypefromreturndirectarrayrector
+         */
+        TypeDeclaration\ClassMethod\ReturnTypeFromReturnDirectArrayRector::class => true,
+
+        /**
+         * Add strict return type based on returned strict expr type
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#returntypefromstrictboolreturnexprrector
+         */
+        TypeDeclaration\ClassMethod\ReturnTypeFromStrictBoolReturnExprRector::class => true,
+
+        /**
+         * Add strict type declaration based on returned constants
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#returntypefromstrictconstantreturnrector
+         */
+        TypeDeclaration\ClassMethod\ReturnTypeFromStrictConstantReturnRector::class => true,
+
+        /**
+         * Add return type from strict return $this
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#returntypefromstrictfluentreturnrector
+         */
+        TypeDeclaration\ClassMethod\ReturnTypeFromStrictFluentReturnRector::class => true,
+
+        /**
+         * Add declare(strict_types=1) if missing
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#declarestricttypesrector
+         */
+        TypeDeclaration\StmtsAwareInterface\DeclareStrictTypesRector::class => false,
+
+        /**
+         * Add explicit public method visibility
+         * @see https://github.com/rectorphp/rector/blob/main/docs/rector_rules_overview.md#explicitpublicclassmethodrector
+         */
+        Visibility\ClassMethod\ExplicitPublicClassMethodRector::class => true,
+    ];
+
+    $run = array_filter($rules);
+    $run = array_filter($rules);
+    $skip = array_diff($rules, $run);
+
+    $rectorConfig->rules(array_keys($run));
+    $rectorConfig->skip(array_keys($skip));
+
+    $rectorConfig->skip([
+        # see https://github.com/rectorphp/rector/issues/7699
+//        CodeQuality\FuncCall\ArrayKeysAndInArrayToArrayKeyExistsRector::class => [
+//            __DIR__ . '/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php',
+//        ],
+        Rector\Naming\Rector\Class_\RenamePropertyToMatchTypeRector::class,
+    ]);
+};