swc_ecma_codegen not rendering ArrowExpr return_type

[Dionysusnu]

Describe the bug

swc_ecma_codegen does not render the return_type property of ArrowExpr

Input code

let cm = Lrc::new(SourceMap::default());
let code = {
	let mut buf = vec![];

	{
		let mut emitter = Emitter {
			cfg: swc_ecma_codegen::Config {
				..Default::default()
			},
			cm: cm.clone(),
			comments: None,
			wr: JsWriter::new(cm.clone(), "\n", &mut buf, None),
		};

		emitter
			.emit_module(&Module {
				body: vec![ModuleItem::Stmt(Stmt::Expr(ExprStmt {
					span: Default::default(),
					expr: boxed(Expr::Arrow(ArrowExpr {
						span: Default::default(),
						params: vec![],
						type_params: None,
						is_async: false,
						is_generator: false,
						body: BlockStmtOrExpr::Expr(boxed(Expr::Lit(Lit::Bool(Bool {
							span: Default::default(),
							value: true,
						})))),
						return_type: Some(TsTypeAnn {
							span: Default::default(),
							type_ann: boxed(TsType::TsLitType(TsLitType {
								span: Default::default(),
								lit: TsLit::Bool(Bool {
									span: Default::default(),
									value: true,
								}),
							})),
						}),
					})),
				}))],
				span: Default::default(),
				shebang: None,
			})
			.unwrap();
	}

	String::from_utf8_lossy(&buf).to_string()
};

Config

N/A

Playground link

No response

Expected behavior

The return type should be rendered if given, like it is for normal functions.

Actual behavior

The return type is not rendered.

Version

0.96.0 local, but issue also exists on the source of main branch

Additional context

No response

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.