From 81fd8bf49a6db6c968ef40452a907eb2bda5cb02 Mon Sep 17 00:00:00 2001
From: Mark Vayngrib <mark@tradle.io>
Date: Mon, 23 Jan 2017 14:45:55 -0500
Subject: [PATCH] don't overwrite window.crypto if not necessary

---
 shim.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/shim.js b/shim.js
index 5f28b72..6e7f184 100644
--- a/shim.js
+++ b/shim.js
@@ -34,7 +34,8 @@ if (require('./package.json').dependencies['react-native-crypto']) {
 
   let crypto
   if (typeof window === 'object') {
-    crypto = window.crypto = window.crypto || {}
+    if (!window.crypto) window.crypto = {}
+    crypto = window.crypto
   } else {
     crypto = require('crypto')
   }