Address PHPStan issues ✔

Author: michael-rubel

src/Collection/Complex/Email.php

@@ -35,7 +35,7 @@ class Email extends Text
     use ValidatesAttributes;
 
     /**
-     * @var Collection
+     * @var Collection<int, string>
      */
     protected Collection $split;
 
@@ -57,15 +57,15 @@ public function __construct(string|Stringable $value)
      */
     public function username(): string
     {
-        return $this->split->first();
+        return (string) $this->split->first();
     }
 
     /**
      * @return string
      */
     public function domain(): string
     {
-        return $this->split->last();
+        return (string) $this->split->last();
     }
 
     /**