Adding working CS fixer

Author: escopecz

composer.json

@@ -21,9 +21,9 @@
     "require-dev": {
         "phpunit/phpunit" : "^10.5",
         "scrutinizer/ocular": "~1.9",
-        "squizlabs/php_codesniffer": "^3.10",
         "rector/rector": "^1.2",
-        "phpstan/phpstan": "^1.11"
+        "phpstan/phpstan": "^1.11",
+        "symplify/easy-coding-standard": "^12.3"
     },
     "autoload": {
         "psr-4": {
@@ -38,7 +38,7 @@
     "scripts": {
         "test": "phpunit",
         "test-coverage": "phpdbg -qrr vendor/bin/phpunit",
-        "cs": "phpcs --standard=psr2 src/",
+        "cs": "vendor/bin/ecs --fix",
         "phpstan": "vendor/bin/phpstan analyse src tests -l 5"
     }
 }

ecs.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+use PhpCsFixer\Fixer\ArrayNotation\ArraySyntaxFixer;
+use PhpCsFixer\Fixer\Import\NoUnusedImportsFixer;
+use PhpCsFixer\Fixer\ListNotation\ListSyntaxFixer;
+use Symplify\EasyCodingStandard\Config\ECSConfig;
+
+return ECSConfig::configure()
+    ->withPaths([
+        __DIR__ . '/examples',
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ])
+    ->withRootFiles()
+    ->withConfiguredRule(
+        ArraySyntaxFixer::class,
+        ['syntax' => 'short']
+    )
+    ->withRules([
+        NoUnusedImportsFixer::class,
+        ListSyntaxFixer::class,
+    ]);