fixed PHPStan errors on level 7

.github/linters/phpstan.neon.dist

@@ -1,4 +1,4 @@
 parameters:
-    level: 6
+    level: 7
     paths:
         - ../../src/

src/Composer/DefaultStrategy.php

@@ -30,6 +30,7 @@ public function build(ManifestOptions $options): ?string
     {
         $factory = $this->factory;
 
+        /** @var string $rawFormat */
         $rawFormat = $options->getFormat(true);
         $format = $options->getFormat();
         $outputFile = $options->getOutputFile();

src/Composer/Manifest/ConsoleTextManifestBuilder.php

@@ -51,6 +51,7 @@ public function __invoke(array $content): string
                     $prefix = '<comment>uses</comment>';
                 }
                 $installedPhp['versions'][$req]['prefix'] = $prefix;
+                /** @var string $constraint */
                 if ('php' === $req) {
                     $entries[] = [sprintf('%s%s %s', $prefix, $category, "$req $constraint"), phpversion()];
                 } elseif (str_starts_with($req, 'ext-')) {

src/Composer/Manifest/DecorateTextManifestBuilder.php

@@ -65,6 +65,7 @@ public function __invoke(array $content): string
                     $prefix .= 'uses';
                 }
                 $installedPhp['versions'][$req]['prefix'] = $prefix;
+                /** @var string $constraint */
                 if ('php' === $req) {
                     $entries[] = sprintf('%s%s %s: <info>%s</info>', $prefix, $category, "$req $constraint", phpversion());
                 } elseif (str_starts_with($req, 'ext-')) {

src/Composer/ManifestOptions.php

@@ -45,6 +45,7 @@ public function getFormat(bool $raw = false): string|null|ManifestFormat
 
     public function getFormatDisplay(): string
     {
+        // @phpstan-ignore return.type
         return match ($this->getFormat()) {
             ManifestFormat::auto => 'AUTO detection mode',
             ManifestFormat::plain, ManifestFormat::ansi, ManifestFormat::console => 'TEXT',

src/Composer/PostInstallStrategy.php

@@ -70,7 +70,7 @@ public static function postUpdate(Event $event): void
 
         // checks if BOX config file declared exists
         if (!empty($configFilePath) && file_exists($configFilePath)) {
-            $configFilePath = realpath($configFilePath);
+            $configFilePath = realpath($configFilePath) ? : null;
         } else {
             // otherwise, try with root base dir package and "box.json.dist" BOX config file
             $configFilePath = dirname($vendorDir) . '/box.json.dist';
@@ -101,7 +101,14 @@ public static function postUpdate(Event $event): void
                     $boxIO = new IO($arrayInput, new NullOutput());
                     $manifest = $strategy->build(new ManifestOptions($boxIO));
 
-                    $stream = new StreamOutput(fopen($source, 'w'));
+                    $resource = fopen($source, 'w');
+                    if (!$resource) {
+                        $message = sprintf('- Unable to write manifest to file "<comment>%s</comment>"', realpath($source));
+                        $io->writeError($message);
+                        continue;
+                    }
+
+                    $stream = new StreamOutput($resource);
                     $stream->setDecorated($io->isDecorated());
                     $stream->write($manifest);
                     fclose($stream->getStream());

src/Console/Command/ManifestBuild.php

@@ -142,6 +142,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             $io->writeln($manifest);
             $message = 'Writing results to standard output';
         } else {
+            // @phpstan-ignore argument.type
             $stream = new StreamOutput(fopen($outputFile, 'w'));
             if (ManifestFormat::ansi === $format) {
                 $stream->setDecorated(true);

src/Console/Command/ManifestStub.php

@@ -116,6 +116,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         $configPath = $config->getConfigurationFile();
 
         if ($configPath) {
+            /** @var null|non-empty-string $shebang */
             $shebang = $config->getShebang();
 
             $banner = $config->getStubBannerContents();
@@ -143,6 +144,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             $output->writeln($stub);
             $message = 'Writing stub code to standard output';
         } else {
+            // @phpstan-ignore argument.type
             $stream = new StreamOutput(fopen($outputFile, 'w'));
             $stream->write($stub);
             fclose($stream->getStream());

src/Helper/ManifestHelper.php

@@ -65,7 +65,7 @@ public function get(array $resources): ?string
                 $resolved = realpath($resource) ?: (file_exists($resource) ? $resource : null);
             }
             if ($resolved) {
-                return file_get_contents($resolved);
+                return file_get_contents($resolved) ?: null;
             }
         }
 
@@ -81,7 +81,7 @@ public function get(array $resources): ?string
      * @param string[]|null $resources
      * @param string[][]|null $mapFiles
      */
-    public function getStubGenerator(string $templatePath = null, array $resources = null, array $mapFiles = null): object
+    public function getStubGenerator(string $templatePath = null, array $resources = null, array $mapFiles = null): StubGenerator
     {
         if (null === $templatePath) {
             $templatePath = dirname(__DIR__, 2) . '/resources/default_stub.template';

src/StubGenerator.php

@@ -39,6 +39,7 @@ public function __construct(
         }
 
         $template = file_get_contents($templatePath);
+        // @phpstan-ignore argument.type
         $template = ltrim($template, "<?php\n");
 
         $this->stubTemplate = str_replace(
@@ -48,6 +49,9 @@ public function __construct(
         );
     }
 
+    /**
+     * @param null|non-empty-string $shebang The shebang line
+     */
     public function generateStub(
         ?string $alias = null,
         ?string $banner = null,