Fix dynamic return type extension for wp_die() (#204)

* Add missing tests for wp_die()

* Fix wp_die() extension

* Bump min PHPStan

---------

Co-authored-by: Viktor Szépe <viktor@szepe.net>

composer.json

@@ -13,7 +13,7 @@
     "require": {
         "php": "^7.2 || ^8.0",
         "php-stubs/wordpress-stubs": "^4.7 || ^5.0 || ^6.0",
-        "phpstan/phpstan": "^1.10.0",
+        "phpstan/phpstan": "^1.10.30",
         "symfony/polyfill-php73": "^1.12.0"
     },
     "require-dev": {

src/WpDieDynamicFunctionReturnTypeExtension.php

@@ -14,7 +14,7 @@
 use PHPStan\Type\Constant\ConstantStringType;
 use PHPStan\Type\Type;
 use PHPStan\Type\VoidType;
-use PHPStan\Type\NeverType;
+use PHPStan\Type\NonAcceptingNeverType;
 
 class WpDieDynamicFunctionReturnTypeExtension implements \PHPStan\Type\DynamicFunctionReturnTypeExtension
 {
@@ -30,7 +30,7 @@ public function getTypeFromFunctionCall(FunctionReflection $functionReflection,
 
         // Called without $args parameter
         if (count($args) < 3) {
-            return new NeverType();
+            return new NonAcceptingNeverType();
         }
 
         $argType = $scope->getType($args[2]->value);
@@ -42,12 +42,12 @@ public function getTypeFromFunctionCall(FunctionReflection $functionReflection,
 
         // Return never if the key 'exit' is not set.
         if (! $argType->hasOffsetValueType(new ConstantStringType('exit'))->yes()) {
-            return new NeverType();
+            return new NonAcceptingNeverType();
         }
 
         // Note WP's wp_die handlers do lazy comparison
         return $argType->getOffsetValueType(new ConstantStringType('exit'))->toBoolean()->isTrue()->yes()
-            ? new NeverType()
+            ? new NonAcceptingNeverType()
             : new VoidType();
     }
 }

tests/data/wp_die.php

@@ -9,7 +9,9 @@
 /** @var array $array */
 $array = null;
 
-assertType('*NEVER*', wp_die('', ''));
-assertType('*NEVER*', wp_die('', '', ['exit' => true]));
+assertType('never', wp_die());
+assertType('never', wp_die(''));
+assertType('never', wp_die('', ''));
+assertType('never', wp_die('', '', ['exit' => true]));
 assertType('void', wp_die('', '', ['exit' => false]));
 assertType('void', wp_die('', '', $array));