1 y 0 en el Caster no castean a bool, son números solamente.

Author: estebandelaf

src/Caster.php

@@ -122,9 +122,9 @@ private static function isNullLiteral(string $v): bool
     private static function parseBool(string $v): ?bool
     {
         return match (strtolower($v)) {
-            'true',  'yes', 'on',  '1' => true,
-            'false', 'no',  'off', '0' => false,
-            default                    => null,
+            'true',  'yes', 'on'  => true,
+            'false', 'no',  'off' => false,
+            default               => null,
         };
     }
 

tests/src/CasterTest.php

@@ -118,7 +118,6 @@ public static function provideTrueLiteralStrings(): array
             'yes uppercase'  => ['YES'],
             'on lowercase'   => ['on'],
             'on uppercase'   => ['ON'],
-            'one string'     => ['1'],
             'true with spaces' => ['  true  '],
         ];
     }
@@ -140,7 +139,6 @@ public static function provideFalseLiteralStrings(): array
             'no uppercase'    => ['NO'],
             'off lowercase'   => ['off'],
             'off uppercase'   => ['OFF'],
-            'zero string'     => ['0'],
             'false with spaces' => ['  false  '],
         ];
     }