From 04ab1e652f9c9c1c7725b7328b12f548a2c6d142 Mon Sep 17 00:00:00 2001
From: Ashfahan <me@ashfahan.com>
Date: Tue, 11 Jun 2019 11:07:51 +0500
Subject: [PATCH] check type rather than value

---
 scss/mixins/_breakpoints.scss | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scss/mixins/_breakpoints.scss b/scss/mixins/_breakpoints.scss
index f55ef78777..ee1e64807b 100644
--- a/scss/mixins/_breakpoints.scss
+++ b/scss/mixins/_breakpoints.scss
@@ -16,7 +16,7 @@
 //    md
 @function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) {
   $n: index($breakpoint-names, $name);
-  @if $n == null {
+  @if type-of($n) == null {
     @error "breakpoint `#{$name}` not found in `#{$breakpoints}`";
   }
   @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);