Cloud Functions: How to copy Firestore Collection to a new document?

Question

I\'d like to make a copy of a collection in Firestore upon an event using Cloud Functions

I already have this code that iterates over the collection and copies each

Answer 1

There is no fast way at the moment. I recommend you rewrite your code like this though:

import { firestore }  from "firebase-admin";
async function copyCollection() {
    const products = await firestore().collection("products").get();
    products.forEach(async (doc)=> {
        await firestore().collection(uid).doc(doc.get('barcode')).set(doc.data());
    })
}