From ff7d8ef156d0a59dba26d9e637c6b15fb3079479 Mon Sep 17 00:00:00 2001
From: Sean Parmelee <seanparmelee@users.noreply.github.com>
Date: Tue, 2 Nov 2021 03:13:28 -0500
Subject: [PATCH] fix: allow amplitude to be imported/required during SSR
 (#436)

---
 src/index.js        | 2 +-
 src/language.js     | 3 ++-
 src/localstorage.js | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/index.js b/src/index.js
index 2cfc8c22..239d0b2a 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,7 @@
 // Entry point
 import Amplitude from './amplitude';
 
-const old = window.amplitude || {};
+const old = (typeof window !== 'undefined' && window.amplitude) || {};
 const newInstance = new Amplitude();
 newInstance._q = old._q || [];
 
diff --git a/src/language.js b/src/language.js
index e8b7409e..3780b8fd 100644
--- a/src/language.js
+++ b/src/language.js
@@ -1,6 +1,7 @@
 var getLanguage = function () {
   return (
-    (navigator && ((navigator.languages && navigator.languages[0]) || navigator.language || navigator.userLanguage)) ||
+    (typeof navigator !== 'undefined' &&
+      ((navigator.languages && navigator.languages[0]) || navigator.language || navigator.userLanguage)) ||
     ''
   );
 };
diff --git a/src/localstorage.js b/src/localstorage.js
index 6d5b4f37..9cf2aed4 100644
--- a/src/localstorage.js
+++ b/src/localstorage.js
@@ -26,7 +26,7 @@ if (BUILD_COMPAT_LOCAL_STORAGE) {
 
   if (windowLocalStorageAvailable()) {
     localStorage = window.localStorage;
-  } else if (window.globalStorage) {
+  } else if (typeof window !== 'undefined' && window.globalStorage) {
     // Firefox 2-3 use globalStorage
     // See https://developer.mozilla.org/en/dom/storage#globalStorage
     try {