Upstream thephpleague/csv state of the touched files before 3426bb277e

src/Buffer.php

@@ -335,11 +335,16 @@ final class Buffer implements TabularData
     private function nthRow(int $nth, string $method): array
     {
         -1 < $nth || throw InvalidArgument::dueToInvalidRecordOffset($nth, $method);
+        if (null === ($first = $this->firstOffset())) {
+            return [];
+        }
 
-        // $nth is a positional index (like ResultSet::nth), so it must be
-        // resolved against the record order rather than the row keys, which
-        // may contain gaps after records have been deleted.
-        return array_values($this->rows)[$nth] ?? [];
+        $offset = $first + $nth;
+        if (!array_key_exists($offset, $this->rows)) {
+            return [];
+        }
+
+        return $this->rows[$nth + $first];
     }
 
     public function fetchColumn(int|string $index = 0): Iterator