Hi guys, Currenlty i am trying to explore firebase realtime database after read the docs i found this two method onValue onChildAdded my issue with them that they retrieve old data on load which lead to activate my callback funtction and i dont need that behvior as i have my own backend i just want the new children

this is the skeleton of my hook

export default function useFirebase(callback: (data: unknown) => void) {
    const isInit = useRef(false);

    useEffect(() => {
        const eventsRef = ref(db, 'events/class_started');
        const unsubscribe = onChildAdded(eventsRef, (data) => {
            const eventData = data.val();
            callback(data)
        });

        return () => {
            unsubscribe();
        }
    })
}