fix(utisl/observeDom): make sure to check for browser enviroment (#2838)

jacobmllr95 · web-flow · commit 8471f317785c · 2019-03-14T11:29:05.000+01:00
diff --git a/src/utils/observe-dom.js b/src/utils/observe-dom.js
@@ -1,8 +1,10 @@
 import { isElement, eventOn, eventOff } from './dom'
+import { inBrowser } from './env'
 
-const eventListenerSupported = window.addEventListener
+const eventListenerSupported = inBrowser && window.addEventListener
 const MutationObserver =
-  window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver
+  inBrowser &&
+  (window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver)
 
 // Fallback observation for legacy browsers
 // Emulate observer disconnect() method so that we can detach the events later
