Preserve author-added empty lines between promoted constructor properties

packages/coding-standard/src/TokenRunner/Transformer/FixerTransformer/TokensNewliner.php

@@ -66,6 +66,10 @@ public function breakItems(BlockInfo $blockInfo, Tokens $tokens, int $kind): voi
                     continue;
                 }
 
+                if ($this->isFollowedByEmptyLine($tokens, $i)) {
+                    continue;
+                }
+
                 $tokens->ensureWhitespaceAtIndex($i + 1, 0, $newlineIndentWhitespace);
             }
         }
@@ -113,4 +117,20 @@ private function isFollowedByComment(Tokens $tokens, int $i): bool
 
         return $nextNextToken->isComment();
     }
+
+    /**
+     * Keep author-added empty line between items
+     *
+     * @param Tokens<Token> $tokens
+     */
+    private function isFollowedByEmptyLine(Tokens $tokens, int $i): bool
+    {
+        $nextToken = $tokens[$i + 1];
+        if (! $nextToken->isWhitespace()) {
+            return false;
+        }
+
+        $lineEnding = $this->whitespacesFixerConfig->getLineEnding();
+        return \substr_count($nextToken->getContent(), $lineEnding) >= 2;
+    }
 }

packages/coding-standard/tests/Fixer/Spacing/StandaloneLinePromotedPropertyFixer/Fixture/skip_empty_lines_between_properties.php.inc

@@ -0,0 +1,17 @@
+<?php
+
+namespace Symplify\CodingStandard\Tests\Fixer\Spacing\StandaloneLinePromotedPropertyFixer\Fixture;
+
+final class SkipEmptyLinesBetweenProperties
+{
+    public function __construct(
+        private int $age,
+
+        #[SomeAttribute]
+        private string $name = 'default',
+
+        #[SomeAttribute]
+        private array $items = [],
+    ) {
+    }
+}