on

on works in place of firestore onSnapshot but with the same syntax as the sweetened get .

listen for doc changes

const unsubscribe = db.on("users", (docs) => {
  for(const user of docs){
    console.log(`${user.name} : ${user.age}`)
  }
})

// equivalent firestore
const unsubscribe = fb.onSnapShot("users", (docs) => {
  docs.forEach((ss) => {
    const user = ss.data()
    console.log(`${user.name} : ${user.age}`)
  }
})

onK and onS return the same values as getK and getS respectively.