From 370b7913b4b465213641f874b9f34d1b724fd1d2 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Fri, 30 Oct 2015 22:51:02 +0000
Subject: [PATCH] add ArrowFunctionExpression parentheses logic

---
 packages/babel-generator/src/node/parentheses.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/babel-generator/src/node/parentheses.js b/packages/babel-generator/src/node/parentheses.js
index c0f55c498e..3b6d1d6e1c 100644
--- a/packages/babel-generator/src/node/parentheses.js
+++ b/packages/babel-generator/src/node/parentheses.js
@@ -163,6 +163,10 @@ export function FunctionExpression(node: Object, parent: Object): boolean {
     return true;
   }
 
+  return ArrowFunctionExpression(node, parent);
+}
+
+export function ArrowFunctionExpression(node: Object, parent: Object): boolean {
   // export default (function () {});
   if (t.isExportDeclaration(parent)) {
     return true;