Fixes a few phpstan errors up to level 10

Author: hostep

src/bitExpert/PHPStan/Magento/Autoload/DataProvider/ClassLoaderProvider.php

@@ -30,6 +30,7 @@ public function __construct(string $magentoRoot)
         $this->composer = new ClassLoader($magentoRoot . '/vendor');
         $autoloadFile = $magentoRoot . '/vendor/composer/autoload_namespaces.php';
         if (is_file($autoloadFile)) {
+            /** @var array<string, string> $map */
             $map = require $autoloadFile;
             foreach ($map as $namespace => $path) {
                 $this->composer->set($namespace, $path);
@@ -38,6 +39,7 @@ public function __construct(string $magentoRoot)
 
         $autoloadFile = $magentoRoot . '/vendor/composer/autoload_psr4.php';
         if (is_file($autoloadFile)) {
+            /** @var array<string, string> $map */
             $map = require $autoloadFile;
             foreach ($map as $namespace => $path) {
                 $this->composer->setPsr4($namespace, $path);
@@ -46,6 +48,7 @@ public function __construct(string $magentoRoot)
 
         $autoloadFile = $magentoRoot . '/vendor/composer/autoload_classmap.php';
         if (is_file($autoloadFile)) {
+            /** @var ?array<string, string> $classMap */
             $classMap = require $autoloadFile;
             if (is_array($classMap)) {
                 $this->composer->addClassMap($classMap);

src/bitExpert/PHPStan/Magento/Autoload/FactoryAutoloader.php

@@ -69,7 +69,7 @@ protected function getFileContents(string $class): string
         $namespace = explode('\\', ltrim($class, '\\'));
         /** @var string $factoryClassname */
         $factoryClassname = array_pop($namespace);
-        $originalClassname = preg_replace('#Factory$#', '', $factoryClassname);
+        $originalClassname = preg_replace('#Factory$#', '', $factoryClassname) ?? $factoryClassname;
         $namespace = implode('\\', $namespace);
 
         $template = "<?php\n";

src/bitExpert/PHPStan/Magento/Autoload/ProxyAutoloader.php

@@ -110,7 +110,9 @@ protected function getFileContents(string $class): string
                                 $defaultValue = ' = false';
                                 break;
                             default:
-                                $defaultValue = ' = ' . $parameter->getDefaultValue();
+                                if (is_string($parameter->getDefaultValue())) {
+                                    $defaultValue = ' = ' . $parameter->getDefaultValue();
+                                }
                                 break;
                         }
                     }

src/bitExpert/PHPStan/Magento/Reflection/MagicMethodReflection.php

@@ -28,7 +28,7 @@ class MagicMethodReflection implements MethodReflection
      */
     private $declaringClass;
     /**
-     * @var ParametersAcceptor[]
+     * @var list<ParametersAcceptor>
      */
     private $variants;
 
@@ -37,7 +37,7 @@ class MagicMethodReflection implements MethodReflection
      *
      * @param string $name
      * @param ClassReflection $declaringClass
-     * @param ParametersAcceptor[] $variants
+     * @param list<ParametersAcceptor> $variants
      */
     public function __construct(string $name, ClassReflection $declaringClass, array $variants = [])
     {