From a65d2f4c0f0b18694c669bdf9e9590d641a7381b Mon Sep 17 00:00:00 2001
From: Kristiyan Kostadinov <crisbeto@users.noreply.github.com>
Date: Tue, 11 Apr 2017 08:58:24 -0700
Subject: [PATCH] fix(compatibility): error in theme check with angular
 universal (#3872)

Fixes a reference error being thrown by the theme check when using server-side rendering.

Fixes #3870.
---
 src/lib/core/compatibility/compatibility.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/core/compatibility/compatibility.ts b/src/lib/core/compatibility/compatibility.ts
index 341e5af7fdd..faa00bcda7a 100644
--- a/src/lib/core/compatibility/compatibility.ts
+++ b/src/lib/core/compatibility/compatibility.ts
@@ -190,7 +190,7 @@ export class CompatibilityModule {
   }
 
   private _checkTheme(): void {
-    if (this._document) {
+    if (this._document && typeof getComputedStyle === 'function') {
       const testElement = this._document.createElement('div');
 
       testElement.classList.add('mat-theme-loaded-marker');