Support ArgumentTypeDeclaration

Author: antonioeatgoat

Inpsyde/Sniffs/CodeQuality/ArgumentTypeDeclarationSniff.php

@@ -40,7 +40,7 @@ public function register()
     {
         // phpcs:enable Inpsyde.CodeQuality.ReturnTypeDeclaration
 
-        return [T_FUNCTION, T_CLOSURE];
+        return [T_FUNCTION, T_CLOSURE, T_FN];
     }
 
     /**

tests/fixtures/argument-type-declaration.php

@@ -129,6 +129,18 @@ function ()
 
 }
 
+fn() => true;
+
+// @phpcsWarningOnNextLine
+fn($foo) => $foo*2;
+
+fn(int $foo) => $foo*2;
+
+// @phpcsWarningOnNextLine
+fn(int $foo, $bar) => true;
+
+fn(int $foo, string $bar) => true;
+
 // @phpcsWarningOnNextLine
 function ($foo)
 {