Firebase - Firestore - get key with collection.add()

Question

I am facing a problem with the new Firestore from Firebase.

Situation: I have a collection(\'room\')

I create room with c

Answer 1

Firebase Javascript SDK:

Just use .id to get the key, here is an example using async/ await :

  const KEYID = async() => (await fs.collection("testing").add({ data: 'test'})).id;