Singleton added

.php-cs-fixer.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types = 1);
+
+use PhpCsFixer\Config;
+use PhpCsFixer\Finder;
+use PhpCsFixer\Runner\Parallel\ParallelConfigFactory;
+
+$finder = (new Finder())->in([
+    __DIR__ . '/src',
+])->exclude(['vendor'])->name('*.php')->ignoreDotFiles(true);
+
+return (new Config())->setRules([
+    '@PSR12'                  => true,
+    'declare_equal_normalize' => [
+        'space' => 'single',
+    ],
+    'single_line_empty_body'  => true,
+    // 'group_to_single_imports' => false,
+    'binary_operator_spaces'  => [
+        'default'   => 'single_space',
+        'operators' => [
+            '=>' => null,
+        ],
+    ],
+])->setParallelConfig(ParallelConfigFactory::detect())->setUsingCache(true)->setRiskyAllowed(true)->setFinder(
+    $finder
+)->setIndent('    ')->setLineEnding("\n");