fix(formatter): incorrect printing of class binding trailing comments (#16234)

* close: #16174

Author: Dunqing

crates/oxc_formatter/src/write/class.rs

@@ -291,16 +291,7 @@ impl<'a> Format<'a> for FormatClass<'a, '_> {
 
         let head = format_with(|f| {
             if let Some(id) = self.id() {
-                write!(f, [space()]);
-
-                if self.type_parameters.is_some()
-                    || self.super_class.is_some()
-                    || !self.implements.is_empty()
-                {
-                    id.fmt(f);
-                } else {
-                    id.write(f);
-                }
+                write!(f, [space(), id]);
             }
 
             if let Some(type_parameters) = &type_parameters {
@@ -458,6 +449,11 @@ impl<'a> Format<'a> for FormatClass<'a, '_> {
             write!(f, [head, format_heritage_clauses, space()]);
         }
 
+        let leading_comments = f.context().comments().comments_before(self.body.span.start);
+        if leading_comments.iter().any(|c| !c.is_line()) {
+            write!(f, FormatLeadingComments::Comments(leading_comments));
+        }
+
         if body.body.is_empty() {
             write!(f, ["{", format_dangling_comments(self.span).with_block_indent(), "}"]);
         } else {

crates/oxc_formatter/tests/fixtures/js/class/issue-16174.js

@@ -0,0 +1,10 @@
+export class Cls /* YES */ {
+  // class body comment
+}
+
+
+export class Mutliline /* Y
+E
+S */ {
+  // class body comment
+}

crates/oxc_formatter/tests/fixtures/js/class/issue-16174.js.snap

@@ -0,0 +1,43 @@
+---
+source: crates/oxc_formatter/tests/fixtures/mod.rs
+---
+==================== Input ====================
+export class Cls /* YES */ {
+  // class body comment
+}
+
+
+export class Mutliline /* Y
+E
+S */ {
+  // class body comment
+}
+
+==================== Output ====================
+------------------
+{ printWidth: 80 }
+------------------
+export class Cls /* YES */ {
+  // class body comment
+}
+
+export class Mutliline /* Y
+E
+S */ {
+  // class body comment
+}
+
+-------------------
+{ printWidth: 100 }
+-------------------
+export class Cls /* YES */ {
+  // class body comment
+}
+
+export class Mutliline /* Y
+E
+S */ {
+  // class body comment
+}
+
+===================== End =====================