From 66e8e6404d87a2767e71b13bed19706b29ad1b9c Mon Sep 17 00:00:00 2001
From: Liam DeBeasi <liamdebeasi@users.noreply.github.com>
Date: Mon, 27 Apr 2020 11:29:44 -0400
Subject: [PATCH] fix(select): account for MutationObserver when performing SSR
 (#21068)

fixes #21063
---
 core/src/utils/watch-options.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/src/utils/watch-options.ts b/core/src/utils/watch-options.ts
index 423fea924b..184c27ea63 100644
--- a/core/src/utils/watch-options.ts
+++ b/core/src/utils/watch-options.ts
@@ -1,4 +1,7 @@
 export const watchForOptions = <T extends HTMLElement>(containerEl: HTMLElement, tagName: string, onChange: (el: T | undefined) => void) => {
+  /* tslint:disable-next-line */
+  if (typeof MutationObserver === 'undefined') { return; }
+
   const mutation = new MutationObserver(mutationList => {
     onChange(getSelectedOption<T>(mutationList, tagName));
   });