fix(buffer): live counter

apps/dashboard/src/components/overview/live-counter/index.tsx

@@ -1,12 +1,12 @@
 import withSuspense from '@/hocs/with-suspense';
 
-import { getLiveVisitors } from '@openpanel/db';
+import { eventBuffer } from '@openpanel/db';
 
 import type { LiveCounterProps } from './live-counter';
 import LiveCounter from './live-counter';
 
 async function ServerLiveCounter(props: Omit<LiveCounterProps, 'data'>) {
-  const count = await getLiveVisitors(props.projectId);
+  const count = await eventBuffer.getActiveVisitorCount(props.projectId);
   return <LiveCounter data={count} {...props} />;
 }
 

apps/dashboard/src/hooks/useWS.ts

@@ -39,7 +39,7 @@ export default function useWS<T>(
     onMessage(event) {
       try {
         const data = getSuperJson<T>(event.data);
-        if (data) {
+        if (data !== null && data !== undefined) {
           debouncedOnMessage(data);
         }
       } catch (error) {