From e4d52a1ac6c7a91a37988f7b3340eea15b50ed85 Mon Sep 17 00:00:00 2001
From: Liwen Guo <lg@livven.me>
Date: Tue, 26 Nov 2019 05:16:07 +0100
Subject: [PATCH] Fix error in server-side rendering (#2039)

---
 src/index.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/index.ts b/src/index.ts
index ee5e9a1..e6bc7a8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -25,7 +25,9 @@ const html2canvas = (element: HTMLElement, options: Partial<Options> = {}): Prom
 
 export default html2canvas;
 
-CacheStorage.setContext(window);
+if (typeof window !== "undefined") {
+    CacheStorage.setContext(window);
+}
 
 const renderElement = async (element: HTMLElement, opts: Partial<Options>): Promise<HTMLCanvasElement> => {
     const ownerDocument = element.ownerDocument;