Map items of collection snapshot in Firebase Firestore

Question

Firebase Firestore Guides show how to iterate documents in a collection snapshot with forEach:

db.collection(\"cities\").get().then(function(que         


        

Answer 1

The answer is:

querySnapshot.docs.map(function(doc) {
  # do something
})

The Reference page for Firestore reveals the docs property on the snapshot.

docs non-null Array of non-null firebase.firestore.DocumentSnapshot

An array of all the documents in the QuerySnapshot.