From 71a649c428dc82cc2d5b47a07ea2c83c17b13291 Mon Sep 17 00:00:00 2001
From: Stefanie Doll <stefie.doll@googlemail.com>
Date: Thu, 21 Mar 2019 11:11:14 +0100
Subject: [PATCH] Check if window object exists (#100)

* Check if window object exists

* brackets for readability

* change check to isUndefined()

* isUndefined() -> !isUndefined()
---
 packages/ui-settings/package.json    | 1 +
 packages/ui-settings/src/defaults.ts | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/ui-settings/package.json b/packages/ui-settings/package.json
index 4da2eeeb..f7cc3c52 100644
--- a/packages/ui-settings/package.json
+++ b/packages/ui-settings/package.json
@@ -10,6 +10,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.3.4",
+    "@polkadot/util": "^0.39.1",
     "@types/store": "^2.0.1",
     "store": "^2.0.12"
   }
diff --git a/packages/ui-settings/src/defaults.ts b/packages/ui-settings/src/defaults.ts
index 6ad20a34..1198dbba 100644
--- a/packages/ui-settings/src/defaults.ts
+++ b/packages/ui-settings/src/defaults.ts
@@ -2,10 +2,12 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
 
+import { isUndefined } from '@polkadot/util';
+
 import { Options } from './types';
 
 // matches https://polkadot.js.org & https://poc-3.polkadot.io
-const isPolkadot = window.location.host.indexOf('polkadot') !== -1;
+const isPolkadot = !isUndefined(window) && window.location.host.indexOf('polkadot') !== -1;
 
 const WSS_POLKADOT = 'wss://poc3-rpc.polkadot.io/';
 const WSS_SUBSTRATE = 'wss://substrate-rpc.parity.io/';
@@ -44,7 +46,7 @@ const UITHEME_DEFAULT = isPolkadot
   ? 'polkadot'
   : 'substrate';
 
-const UIMODE_DEFAULT = !isPolkadot && window.location.host.indexOf('ui-light') !== -1
+const UIMODE_DEFAULT = !isPolkadot && !isUndefined(window) && window.location.host.indexOf('ui-light') !== -1
   ? 'light'
   : 'full';