From 4cb7e5009a1ae0343837c96e7f9a3c1f1d2c5271 Mon Sep 17 00:00:00 2001
From: David Aurelio <davidaurelio@fb.com>
Date: Wed, 14 Dec 2016 10:18:18 +0000
Subject: [PATCH] Add missing property descriptor values

---
 packages/babel-generator/src/buffer.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/babel-generator/src/buffer.js b/packages/babel-generator/src/buffer.js
index 15be5e7736..76db204668 100644
--- a/packages/babel-generator/src/buffer.js
+++ b/packages/babel-generator/src/buffer.js
@@ -47,6 +47,8 @@ export default class Buffer {
 
     if (map) {
       Object.defineProperty(result, "map", {
+        configurable: true,
+        enumerable: true,
         get() {
           return this.map = map.get();
         },