[FR] getCountFromServer for firebase-admin

[RohovDmytro]

Firebase Web SDK introduced a getCountFromServer function to get count of documents in a collection bypassing downloading documents. Would be neat to get it in firebase-admin.

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[dconeybe]

We literally JUST released it! See https://firebase.google.com/support/release-notes/admin/node#11.2.0

[laug]

For those who came here via google and are looking for the function name: .count() as in
const snapshot = await db.collection("users").where("team", "==", "sales").count().get() console.log(snapshot.data().count)