Firestore Pagination (Node.js)

const pageSize = 10let blogQuery = db.collection('blog').orderBy('created')let snapshot = await blogQuery.limit(pageSize).get()let lastCreated = nullwhile (snapshot.size) {  console.log('batch', lastCreated)  for (const doc of snapshot.docs) {    console.log(doc.id)    lastCreated = doc.get('created')  }  /*  const last = snapshot.docs[snapshot.docs.length - 1];  lastCreated = last.get('created')   */  snapshot = await blogQuery.startAfter(lastCreated).limit(pageSize).get()}