From 2c9c4b9911fd392faa6244082688c2e656a93eb2 Mon Sep 17 00:00:00 2001
From: Silver Chen <silverchen@users.noreply.github.com>
Date: Fri, 2 Aug 2019 20:39:28 +0200
Subject: [PATCH] fix: Bowser.getParser empty string UserAgent error (#246)

---
 packages/@pollyjs/persister/src/har/log.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/@pollyjs/persister/src/har/log.js b/packages/@pollyjs/persister/src/har/log.js
index 1fee58fd..905594ac 100644
--- a/packages/@pollyjs/persister/src/har/log.js
+++ b/packages/@pollyjs/persister/src/har/log.js
@@ -2,8 +2,8 @@ import uniqWith from 'lodash-es/uniqWith';
 import Bowser from 'bowser';
 
 const bowser =
-  'navigator' in global
-    ? Bowser.getParser(global.navigator.userAgent || '').getBrowser()
+  global.navigator && global.navigator.userAgent
+    ? Bowser.getParser(global.navigator.userAgent).getBrowser()
     : null;
 const browser =
   bowser && bowser.name && bowser.version