Use for-of instead of forEach (#3583)

Co-authored-by: syuilo <syuilotan@yahoo.co.jp>
Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

src/push-sw.ts

@@ -23,7 +23,7 @@ export default async function(userId: mongo.ObjectID | string, type: string, bod
 		userId: userId
 	});
 
-	subscriptions.forEach(subscription => {
+	for (const subscription of subscriptions) {
 		const pushSubscription = {
 			endpoint: subscription.endpoint,
 			keys: {
@@ -48,5 +48,5 @@ export default async function(userId: mongo.ObjectID | string, type: string, bod
 				});
 			}
 		});
-	});
+	}
 }