PHPStan Level 4

tests/Spout/Writer/CSV/WriterTest.php

@@ -193,7 +193,7 @@ class WriterTest extends TestCase
      * @param string $fieldDelimiter
      * @param string $fieldEnclosure
      * @param bool   $shouldAddBOM
-     * @return string|null
+     * @return string
      */
     private function writeToCsvFileAndReturnWrittenContent($allRows, $fileName, $fieldDelimiter = ',', $fieldEnclosure = '"', $shouldAddBOM = true)
     {

tests/Spout/Writer/XLSX/WriterWithStyleTest.php

@@ -475,7 +475,6 @@ class WriterWithStyleTest extends TestCase
             $borderParts = $borderNode->childNodes;
             $ordering = [];
 
-            /** @var \DOMText $part */
             foreach ($borderParts as $part) {
                 if ($part instanceof \DOMElement) {
                     $ordering[] = $part->nodeName;