From 8edb208992fb11338e8e975995e0e2b5b3720834 Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Tue, 3 Nov 2015 08:34:35 -0800
Subject: [PATCH] Allow use of instanceof without Symbol

---
 packages/babel-helpers/src/helpers.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/babel-helpers/src/helpers.js b/packages/babel-helpers/src/helpers.js
index 8ad999f6f8..ae464bc581 100644
--- a/packages/babel-helpers/src/helpers.js
+++ b/packages/babel-helpers/src/helpers.js
@@ -181,7 +181,7 @@ export let inherits = template(`
 
 export let _instanceof = template(`
   (function (left, right) {
-    if (right != null && right[Symbol.hasInstance]) {
+    if (right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance]) {
       return right[Symbol.hasInstance](left);
     } else {
       return left instanceof right;