Issue #356: Added Rector implementation.

composer.json

@@ -73,12 +73,13 @@
         "roave/psr-container-doctrine": "^3.5"
     },
     "require-dev": {
+        "filp/whoops": "^2.14",
         "laminas/laminas-development-mode": "^3.10",
         "mezzio/mezzio-tooling": "^2.6",
         "phpunit/phpunit": "^9.5",
+        "rector/rector": "^0.15.18",
         "roave/security-advisories": "dev-master",
         "squizlabs/php_codesniffer": "^3.7",
-        "filp/whoops": "^2.14",
         "vimeo/psalm": "^4.30"
     },
     "autoload": {

rector.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\Set\ValueObject\SetList;
+
+return static function (RectorConfig $rectorConfig): void {
+    /**
+     * @see https://getrector.com/documentation
+     *
+     * Run full analysis: vendor/bin/rector process --clear-cache
+     * Run analysis as simulation: vendor/bin/rector process --dry-run --clear-cache
+     * Run analysis only on specific directory: vendor/bin/rector process dir1 dir2 dirN --clear-cache
+     * Get help using Rector: vendor/bin/rector --help
+     */
+
+    /**
+     * Configure directories to be analyzed
+     */
+    $rectorConfig->paths([
+        __DIR__ . '/bin',
+        __DIR__ . '/config',
+        __DIR__ . '/data',
+        __DIR__ . '/public',
+        __DIR__ . '/src',
+        __DIR__ . '/test',
+    ]);
+
+    /**
+     * Exclude directories from being analyzed
+     */
+    $rectorConfig->skip([
+        __DIR__ . '/data/cache',
+    ]);
+
+    /**
+     * Select rules to be used by the analysis
+     */
+    $rectorConfig->sets([
+        SetList::ACTION_INJECTION_TO_CONSTRUCTOR_INJECTION,
+        SetList::PHP_81,
+        SetList::PHP_82,
+        SetList::CODE_QUALITY,
+        SetList::CODING_STYLE,
+        SetList::DEAD_CODE,
+        SetList::EARLY_RETURN,
+        SetList::NAMING,
+        SetList::PRIVATIZATION,
+        SetList::PSR_4,
+        SetList::TYPE_DECLARATION,
+    ]);
+};