Fix InvalidNullableReturnType

Author: roxblnfk

.php-cs-fixer.dist.php

@@ -8,4 +8,4 @@
     ->include(__DIR__ . '/src')
     ->include(__DIR__ . '/tests')
     ->include(__DIR__ . '/rector.php')
-    ->build();
+    ->build();

src/Lib/Variable/VariableReplacementProcessor.php

@@ -34,7 +34,7 @@ public function process(string $text): string
         );
 
         // Replace {{VAR_NAME}} syntax
-        return \preg_replace_callback(
+        return (string) \preg_replace_callback(
             '/{{([a-zA-Z0-9_]+)}}/',
             fn(array $matches) => $this->replaceVariable($matches[1]),
             (string) $result,

src/McpServer/Routing/RouteRegistrar.php

@@ -82,10 +82,10 @@ private function registerMethodRoutes(Route $route, string $controllerClass): vo
     private function normalizePath(string $path): string
     {
         // Replace multiple slashes with a single slash
-        $path = \preg_replace('#/+#', '/', $path);
+        $path = (string) \preg_replace('#/+#', '/', $path);
 
         // Ensure path starts with a slash
-        if (!\str_starts_with((string) $path, '/')) {
+        if (!\str_starts_with($path, '/')) {
             $path = '/' . $path;
         }
 

src/Modifier/Sanitizer/Rule/CommentInsertionRule.php

@@ -45,7 +45,7 @@ public function apply(string $content): string
         // Add class comments
         if (!empty($this->classComment)) {
             $comment = $this->formatPhpComment($this->classComment);
-            $content = \preg_replace(
+            $content = (string) \preg_replace(
                 '/(class|interface|trait|enum)\s+([a-zA-Z0-9_]+)/',
                 PHP_EOL . $comment . PHP_EOL . '$1 $2',
                 $content,
@@ -55,7 +55,7 @@ public function apply(string $content): string
         // Add method comments
         if (!empty($this->methodComment)) {
             $comment = $this->formatPhpComment($this->methodComment);
-            $content = \preg_replace(
+            $content = (string) \preg_replace(
                 '/(\s+)public|private|protected\s+function/',
                 '$1' . PHP_EOL . '$1' . $comment . PHP_EOL . '$1$0',
                 (string) $content,

src/Modifier/Sanitizer/Rule/KeywordRemovalRule.php

@@ -73,11 +73,9 @@ public function apply(string $content): string
     private function replaceKeywords(string $line): string
     {
         foreach ($this->keywords as $keyword) {
-            if ($this->caseSensitive) {
-                $line = \str_replace($keyword, $this->replacement, $line);
-            } else {
-                $line = \preg_replace('/' . \preg_quote($keyword, '/') . '/i', $this->replacement, (string) $line);
-            }
+            $line = $this->caseSensitive
+                ? \str_replace($keyword, $this->replacement, $line)
+                : (string) \preg_replace('/' . \preg_quote($keyword, '/') . '/i', $this->replacement, $line);
         }
 
         return $line;

src/Modifier/Sanitizer/Rule/RegexReplacementRule.php

@@ -26,7 +26,8 @@ public function getName(): string
     public function apply(string $content): string
     {
         foreach ($this->patterns as $pattern => $replacement) {
-            $content = \preg_replace($pattern, $replacement, (string) $content);
+            /** @var string $content */
+            $content = \preg_replace($pattern, $replacement, $content);
         }
 
         return $content;