From b362b0ad8d5b7ee4496161158faf325db03ce764 Mon Sep 17 00:00:00 2001
From: Paul Stelzer <paulstelzer@gmail.com>
Date: Fri, 7 Sep 2018 16:16:37 +0200
Subject: [PATCH] fix(core): matchBreakpoint will return true if breakPoint is
 empty string (#15498)

Closes #15495
---
 core/src/utils/media.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/utils/media.ts b/core/src/utils/media.ts
index 187e7e41d7..f3348fbe11 100644
--- a/core/src/utils/media.ts
+++ b/core/src/utils/media.ts
@@ -11,7 +11,7 @@ export const SIZE_TO_MEDIA: any = {
 // at the breakpoint passed
 // e.g. matchBreakpoint('sm') => true if screen width exceeds 576px
 export function matchBreakpoint(win: Window, breakpoint: string | undefined) {
-  if (breakpoint === undefined) {
+  if (breakpoint === undefined || breakpoint === '') {
     return true;
   }
   const mediaQuery = SIZE_TO_MEDIA[breakpoint];