From 14a51799a6bfa0fd1a006fd59b937e94129e0e21 Mon Sep 17 00:00:00 2001
From: Denis Shulyaka <Shulyaka@gmail.com>
Date: Sat, 20 Jun 2020 21:23:01 +0300
Subject: [PATCH] Cater for null super.styles on page refresh

---
 src/components/entity/ha-entity-humidifier.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/components/entity/ha-entity-humidifier.ts b/src/components/entity/ha-entity-humidifier.ts
index b77d4a56fe..2475f6273f 100644
--- a/src/components/entity/ha-entity-humidifier.ts
+++ b/src/components/entity/ha-entity-humidifier.ts
@@ -28,7 +28,8 @@ class HaEntityHumidifier extends HaEntityToggle {
   }
 
   static get styles(): CSSResult[] {
-    return super.styles.concat([
+    let toggle_styles = super.styles;
+    let humidifier_styles = [
       css`
         :host {
           display: flex;
@@ -55,7 +56,10 @@ class HaEntityHumidifier extends HaEntityToggle {
           direction: ltr;
         }
       `,
-    ]);
+    ];
+    return toggle_styles
+      ? toggle_styles.concat(humidifier_styles)
+      : humidifier_styles;
   }
 }