refactor: --ci option

src/Plugins/Environment.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Plugins;
+
+use Pest\Contracts\Plugins\HandlesArguments;
+
+/**
+ * @internal
+ */
+final class Environment implements HandlesArguments
+{
+    /**
+     * The continuous integration environment.
+     */
+    public const CI    = 'ci';
+
+    /**
+     * The local environment.
+     */
+    public const LOCAL = 'local';
+
+    /**
+     * @var \Pest\Plugins\Environment|null
+     */
+    private static $instance;
+
+    /**
+     * The current environment.
+     *
+     * @var string|null
+     */
+    private static $name;
+
+    /**
+     * Allows to handle custom command line arguments.
+     *
+     * @param array<int, string> $arguments
+     *
+     * @return array<int, string> the updated list of arguments
+     */
+    public function handleArguments(array $arguments): array
+    {
+        foreach ($arguments as $index => $argument) {
+            if ($argument === '--ci') {
+                unset($arguments[$index]);
+
+                self::$name = self::CI;
+            }
+        }
+
+        return array_values($arguments);
+    }
+
+    /**
+     * Gets the environment name.
+     */
+    public static function name(string $name = null): string
+    {
+        if (is_string($name)) {
+            self::$name = $name;
+        }
+
+        return self::$name ?? self::LOCAL;
+    }
+}