refactor: add return types

Author: kenjis

system/Debug/BaseExceptionHandler.php

@@ -89,7 +89,7 @@ protected function collectVars(Throwable $exception, int $statusCode): array
      *
      * @param array|object $trace
      */
-    protected function maskSensitiveData(&$trace, array $keysToMask, string $path = '')
+    protected function maskSensitiveData(&$trace, array $keysToMask, string $path = ''): void
     {
         foreach ($keysToMask as $keyToMask) {
             $explode = explode('/', $keyToMask);

system/HTTP/SiteURI.php

@@ -328,7 +328,7 @@ public function refreshPath()
     /**
      * Saves our parts from a parse_url() call.
      */
-    protected function applyParts(array $parts)
+    protected function applyParts(array $parts): void
     {
         if (! empty($parts['host'])) {
             $this->host = $parts['host'];

system/HotReloader/HotReloader.php

@@ -16,7 +16,7 @@
  */
 final class HotReloader
 {
-    public function run()
+    public function run(): void
     {
         ini_set('zlib.output_compression', 'Off');
 

system/Router/AutoRouterImproved.php

@@ -121,7 +121,7 @@ public function __construct(// @phpstan-ignore-line
         $this->controller = $this->defaultController;
     }
 
-    private function createSegments(string $uri)
+    private function createSegments(string $uri): array
     {
         $segments = explode('/', $uri);
         $segments = array_filter($segments, static fn ($segment) => $segment !== '');