handle request deprecations

src/CacheWarmer/EntrypointCacheWarmer.php

@@ -28,7 +28,7 @@ public function __construct(array $cacheKeys, string $phpArrayFile, CacheItemPoo
     /**
      * {@inheritdoc}
      */
-    protected function doWarmUp($cacheDir, ArrayAdapter $arrayAdapter)
+    protected function doWarmUp($cacheDir, ArrayAdapter $arrayAdapter): bool
     {
         foreach ($this->cacheKeys as $cacheKey => $path) {
             // If the file does not exist then just skip past this entry point.

src/DependencyInjection/Configuration.php

@@ -16,7 +16,7 @@
 
 final class Configuration implements ConfigurationInterface
 {
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('webpack_encore');
         /** @var ArrayNodeDefinition $rootNode */

src/DependencyInjection/WebpackEncoreExtension.php

@@ -25,7 +25,7 @@ final class WebpackEncoreExtension extends Extension
 {
     private const ENTRYPOINTS_FILE_NAME = 'entrypoints.json';
 
-    public function load(array $configs, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container): void
     {
         $loader = new XmlFileLoader($container, new FileLocator(\dirname(__DIR__).'/Resources/config'));
         $loader->load('services.xml');

src/EventListener/ExceptionListener.php

@@ -23,7 +23,7 @@ public function __construct(EntrypointLookupCollection $entrypointLookupCollecti
         $this->buildNames = $buildNames;
     }
 
-    public function onKernelException()
+    public function onKernelException(): void
     {
         foreach ($this->buildNames as $buildName) {
             $this->entrypointLookupCollection->getEntrypointLookup($buildName)->reset();

src/EventListener/PreLoadAssetsEventListener.php

@@ -29,12 +29,12 @@ public function __construct(TagRenderer $tagRenderer)
         $this->tagRenderer = $tagRenderer;
     }
 
-    /**
-     * @param ResponseEvent $event
-     */
-    public function onKernelResponse($event)
+    public function onKernelResponse(ResponseEvent $event): void
     {
-        if (!$event->isMasterRequest()) {
+        // Handle deprecated `KernelEvent::isMasterRequest() - Can be removed when Symfony < 5.3 support is dropped.
+        $mainRequestMethod = method_exists($event, 'isMainRequest') ? 'isMainRequest' : 'isMasterRequest';
+
+        if (!$event->$mainRequestMethod()) {
             return;
         }
 
@@ -76,7 +76,7 @@ class_exists(GenericLinkProvider::class) ? new GenericLinkProvider() : new FigGe
         $request->attributes->set('_links', $linkProvider);
     }
 
-    public static function getSubscribedEvents()
+    public static function getSubscribedEvents(): array
     {
         return [
             // must run before AddLinkHeaderListener