Add more return types after fixing a typo in my script

Author: nicolas-grekas

Command/AssetsInstallCommand.php

@@ -95,7 +95,7 @@ protected function configure()
     /**
      * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         /** @var KernelInterface $kernel */
         $kernel = $this->getApplication()->getKernel();

Command/ConfigDumpReferenceCommand.php

@@ -74,7 +74,7 @@ protected function configure()
      *
      * @throws \LogicException
      */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $io = new SymfonyStyle($input, $output);
         $errorIo = $io->getErrorStyle();
@@ -86,7 +86,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 'For dumping a specific option, add its path as the second argument of this command. (e.g. <comment>config:dump-reference FrameworkBundle profiler.matcher</comment> to dump the <comment>framework.profiler.matcher</comment> configuration)',
             ]);
 
-            return null;
+            return 0;
         }
 
         $extension = $this->findExtension($name);
@@ -130,6 +130,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $io->writeln(null === $path ? $dumper->dump($configuration, $extension->getNamespace()) : $dumper->dumpAtPath($configuration, $path));
 
-        return null;
+        return 0;
     }
 }

Command/DebugAutowiringCommand.php

@@ -69,7 +69,7 @@ protected function configure()
     /**
      * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $io = new SymfonyStyle($input, $output);
         $errorIo = $io->getErrorStyle();
@@ -146,7 +146,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $io->newLine();
 
-        return null;
+        return 0;
     }
 
     private function getFileLink(string $class): string

Command/RouterMatchCommand.php

@@ -71,7 +71,7 @@ protected function configure()
     /**
      * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $io = new SymfonyStyle($input, $output);
 
@@ -114,6 +114,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
             return 1;
         }
 
-        return null;
+        return 0;
     }
 }

Command/TranslationUpdateCommand.php

@@ -102,7 +102,7 @@ protected function configure()
     /**
      * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $io = new SymfonyStyle($input, $output);
         $errorIo = $io->getErrorStyle();
@@ -236,7 +236,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (!\count($operation->getDomains())) {
             $errorIo->warning('No translation messages were found.');
 
-            return null;
+            return 0;
         }
 
         $resultMessage = 'Translation files were successfully updated';
@@ -302,7 +302,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $errorIo->success($resultMessage.'.');
 
-        return null;
+        return 0;
     }
 
     private function filterCatalogue(MessageCatalogue $catalogue, string $domain): MessageCatalogue