eslint: enable extra rules

no-implicit-coercion, no-extra-boolean-cast, no-invalid-this, logical-assignment-operators, no-unmodified-loop-condition

packages/hydrooj/src/handler/status.ts

@@ -15,7 +15,7 @@ async function getStatus() {
         let desc = '';
         const online = new Date(stat.updateAt).getTime() > new Date().getTime() - 300000;
         if (!online) desc = 'Offline';
-        desc = desc || 'Online';
+        desc ||= 'Online';
         stat.isOnline = online;
         stat.status = desc;
     }