From a5554a8fcfe09b9b58df30ac779483681cc14520 Mon Sep 17 00:00:00 2001
From: Dunqing <29533304+Dunqing@users.noreply.github.com>
Date: Tue, 14 Oct 2025 05:59:30 +0000
Subject: [PATCH] fix(formatter): print a line break incorrectly for directives
 (#14577)

---
 crates/oxc_formatter/src/write/program.rs         | 10 +++++++++-
 .../tests/fixtures/js/comments/directive.js       |  4 ++++
 .../tests/fixtures/js/comments/directive.js.snap  | 15 +++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 crates/oxc_formatter/tests/fixtures/js/comments/directive.js
 create mode 100644 crates/oxc_formatter/tests/fixtures/js/comments/directive.js.snap

diff --git a/crates/oxc_formatter/src/write/program.rs b/crates/oxc_formatter/src/write/program.rs
index bb82f3435c4e5..8086f10423099 100644
--- a/crates/oxc_formatter/src/write/program.rs
+++ b/crates/oxc_formatter/src/write/program.rs
@@ -113,7 +113,15 @@ impl<'a> Format<'a> for AstNode<'a, Vec<'a, Directive<'a>>> {
         //```
         // so we should keep an extra empty line after JsDirectiveList
 
-        let need_extra_empty_line = f.source_text().lines_after(last_directive.span.end) > 1;
+        let end = if let Some(last_printed_comment) = f.comments().printed_comments().last()
+            && last_printed_comment.span.end > last_directive.span.end
+        {
+            last_printed_comment.span.end
+        } else {
+            last_directive.span.end
+        };
+
+        let need_extra_empty_line = f.source_text().lines_after(end) > 1;
         write!(f, if need_extra_empty_line { empty_line() } else { hard_line_break() })
     }
 }
diff --git a/crates/oxc_formatter/tests/fixtures/js/comments/directive.js b/crates/oxc_formatter/tests/fixtures/js/comments/directive.js
new file mode 100644
index 0000000000000..d49de51b07c6d
--- /dev/null
+++ b/crates/oxc_formatter/tests/fixtures/js/comments/directive.js
@@ -0,0 +1,4 @@
+"use strict";
+
+// comment
+(() => {});
\ No newline at end of file
diff --git a/crates/oxc_formatter/tests/fixtures/js/comments/directive.js.snap b/crates/oxc_formatter/tests/fixtures/js/comments/directive.js.snap
new file mode 100644
index 0000000000000..60c94cc7c62d4
--- /dev/null
+++ b/crates/oxc_formatter/tests/fixtures/js/comments/directive.js.snap
@@ -0,0 +1,15 @@
+---
+source: crates/oxc_formatter/tests/fixtures/mod.rs
+---
+==================== Input ====================
+"use strict";
+
+// comment
+(() => {});
+==================== Output ====================
+"use strict";
+
+// comment
+() => {};
+
+===================== End =====================