[ Vue ] Vue3 Firebase firestore collection 전체 불러오기

import { getFirestore } from "firebase/firestore";

import { collection, getDocs } from "firebase/firestore";

const db = getFirestore(app);

const user = ref([])

onMounted(async () => {

    const querySnapshot = await getDocs(collection(db, "users"))

    let loginData = []
    querySnapshot.forEach((doc) => {
      // doc.data() is never undefined for query doc snapshots
      console.log(doc.id, " => ", doc.data())
      
      loginData.push(doc.data())
    }
    
    user.value = loginData
    
})