feat: add rector in ci

.gitattributes

@@ -11,5 +11,6 @@ phpdoc.dist.xml export-ignore
 phpunit.xml export-ignore
 phpunit.xml.dist export-ignore
 phpstan.neon.dist export-ignore
+rector.php export-ignore
 USAGE.md export-ignore
 README_fr.md export-ignore

.github/workflows/github-actions.yml

@@ -13,7 +13,7 @@ jobs:
         php: [7.2, 7.3, 7.4, 8.0, 8.1]
         experimental: [false]
         include:
-          - php: 7.4
+          - php: 7.2
             analysis: true
 
     steps:
@@ -40,6 +40,10 @@ jobs:
       - name: Unit tests
         run: bin/phpunit --coverage-clover clover.xml
 
+      - name: Refactoring
+        if: matrix.analysis
+        run: bin/rector --dry-run
+
       - name: Upload coverage results to Coveralls
         if: matrix.analysis
         env:

composer.json

@@ -21,7 +21,8 @@
         "friendsofphp/php-cs-fixer": "^3.2",
         "phpstan/phpstan": "^1.1",
         "phpstan/phpstan-phpunit": "^1.0",
-        "phpunit/phpunit": "^8.5"
+        "phpunit/phpunit": "^8.5",
+        "rector/rector": "0.12.5"
     },
     "suggest": {
         "phpdocumentor/phpdocumentor": "To generate documentation.",

rector.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Core\Configuration\Option;
+use Rector\Core\ValueObject\PhpVersion;
+use Rector\Set\ValueObject\SetList;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+return static function (ContainerConfigurator $containerConfigurator): void {
+    // get parameters
+    $parameters = $containerConfigurator->parameters();
+
+    // paths to refactor; solid alternative to CLI arguments
+    $parameters->set(Option::PATHS, [
+        __DIR__ . '/src',
+        __DIR__ . '/tests'
+    ]);
+
+    // is your PHP version different from the one your refactor to? [default: your PHP version], uses PHP_VERSION_ID format
+    $parameters->set(Option::PHP_VERSION_FEATURES, PhpVersion::PHP_72);
+
+    // Define what rule sets will be applied
+    $containerConfigurator->import(SetList::CODE_QUALITY);
+
+    // Path to phpstan with extensions, that PHPSTan in Rector uses to determine types
+    $parameters->set(Option::PHPSTAN_FOR_RECTOR_PATH, getcwd() . '/phpstan.neon.dist');
+};