From d3b939690ce2fe2c6d24830d4f6b4f4337a41844 Mon Sep 17 00:00:00 2001
From: Dmitry Molotkov <aldarund@gmail.com>
Date: Thu, 3 Jan 2019 00:52:09 +0300
Subject: [PATCH] fix(server): process browser version with non semver versions
 (#4673)

---
 packages/server/src/middleware/modern.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/server/src/middleware/modern.js b/packages/server/src/middleware/modern.js
index c1f779b80a..915ce1d837 100644
--- a/packages/server/src/middleware/modern.js
+++ b/packages/server/src/middleware/modern.js
@@ -17,6 +17,9 @@ const isModernBrowser = (ua) => {
   }
   const { browser } = UAParser(ua)
   const browserVersion = semver.coerce(browser.version)
+  if (!browserVersion) {
+    return false
+  }
   return modernBrowsers[browser.name] && semver.gte(browserVersion, modernBrowsers[browser.name])
 }