From 8b0176ddfafdf314861e8763be75f9812a2d9bf5 Mon Sep 17 00:00:00 2001
From: syuilo <Syuilotan@yahoo.co.jp>
Date: Wed, 24 Jul 2019 02:16:41 +0900
Subject: [PATCH] Fix error

---
 src/client/app/mios.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/client/app/mios.ts b/src/client/app/mios.ts
index a73ef45c3..cb25eaa83 100644
--- a/src/client/app/mios.ts
+++ b/src/client/app/mios.ts
@@ -174,7 +174,7 @@ export default class MiOS extends EventEmitter {
 			// Init service worker
 			if (this.shouldRegisterSw) {
 				this.getMeta().then(data => {
-					this.registerSw(data.swPublickey);
+					if (data.swPublickey) this.registerSw(data.swPublickey);
 				});
 			}
 		};
@@ -291,7 +291,7 @@ export default class MiOS extends EventEmitter {
 	 * Register service worker
 	 */
 	@autobind
-	private registerSw(swPublickey) {
+	private registerSw(swPublickey: string) {
 		// Check whether service worker and push manager supported
 		const isSwSupported =
 			('serviceWorker' in navigator) && ('PushManager' in window);