How do I get the server timestamp in Cloud Functions for Firebase?

Question

I know you can pull the server timestamp in web, ios, and android - but what about the new Cloud Functions for Firebase? I can\'t figure out how to get the server timestamp

Answer 1

It's in the documentation August 16, 2020.

https://cloud.google.com/firestore/docs/manage-data/add-data#server_timestamp

// Get the `FieldValue` object
const FieldValue = admin.firestore.FieldValue;

// Create a document reference
const docRef = db.collection('objects').doc('some-id');

// Update the timestamp field with the value from the server
const res = await docRef.update({
  timestamp: FieldValue.serverTimestamp()
});

Here's how I used it in my code:

const createUserDoc = (user) => {
    const FieldValue = admin.firestore.FieldValue
    return db.collection('users').doc(user.uid).set({
        memberSince: FieldValue.serverTimestamp(),
    })
}