What's the best way to check if a Firestore record exists if its path is known?

Question

Given a given Firestore path what\'s the easiest and most elegant way to check if that record exists or not short of creating a document observable and subscribing to it?

Answer 1

If for whatever reason you wanted to use an observable and rxjs in angular instead of a promise:

this.afs.doc('cities', "SF")
.valueChanges()
.pipe(
  take(1),
  tap((doc: any) => {
  if (doc) {
    console.log("exists");
    return;
  }
  console.log("nope")
}));