How to get metadata of a document/Collection from Firestore Database in Firebase using code snippets

Question

I am trying to get all the metadata information of a document or a Collection present in a Firestore Database in Firebase using NodeJs or Python Code snippets.

I am able to get size of document using the following

    const sizeof = require('firestore-size');
    const admin=require("firebase-admin");
    const db = admin.firestore();
    const snapshot = await db.collection("Users").doc("Rajesh").get();
    return sizeof(snapshot.data()).toString()+" Bytes"

But I need more information other than just the size. How to achieve this?