Functions to ease firestore instructions because I keep forgetting how to use them

firestoreFuncts.js

const admin = require("firebase-admin");
const db = admin.firestore();

function getCollection(collectionName) {
  const collection = db.collection(collectionName);
  return collection;
}

async function getCollectionWithQuery(
  collectionName,
  column,
  operator,
  value,
  limit = 0
) {
  const collection = getCollection(collectionName);
  const filteredCollectionReference = collection
    .where(column, operator, value)
    .limit(limit);

  const filteredCollection = await filteredCollectionReference.get();

  return filteredCollection;
}

async function getCollectionSnapshot(collectionName) {
  const collection = getCollection(collectionName);
  const snapshot = await collection.get();
  return snapshot;
}

async function getDoc(collectionName, docId) {
  const collection = getCollection(collectionName);
  const doc = await collection.doc(docId).get();
  return doc;
}

async function createDoc(collectionName, doc) {
  const collection = getCollection(collectionName);
  const newDoc = await collection.add(doc);
  return newDoc;
}

async function updateDoc(collectionName, docId, doc) {
  const collection = getCollection(collectionName);
  const updatedDoc = await collection.doc(docId).update(doc);
  return updatedDoc;
}

async function deleteDoc(collectionName, docId) {
  const collection = getCollection(collectionName);

  await collection.doc(docId).delete();

  return true;
}

async function createSubcollectionDoc(
  collectionName,
  docId,
  subCollectionName,
  subCollectionDoc
) {
  const subCollection = await getSubCollectionReference(
    collectionName,
    docId,
    subCollectionName
  );

  const newSubCollectionDoc = await subCollection.add(subCollectionDoc);
  return newSubCollectionDoc;
}

async function getSubCollectionReference(
  collectionName,
  docId,
  subCollectionName,
  limit = 0
) {
  const doc = await getDoc(collectionName, docId);
  const subCollection = doc.ref.collection(subCollectionName).limit(limit);
  return subCollection;
}
async function getSubCollectionSnapshot(
  collectionName,
  docId,
  subCollectionName,
  limit
) {
  const subCollection = await getSubCollectionReference(
    collectionName,
    docId,
    subCollectionName,
    limit
  );

  const snapshot = await subCollection.get();
  return snapshot;
}

async function getSubcollectionDoc(
  collectionName,
  docId,
  subCollectionName,
  subCollectionDocId
) {
  const subCollection = await getSubCollectionSnapshot(
    collectionName,
    docId,
    subCollectionName
  );

  const subCollectionDoc = subCollection.docs.find(
    (doc) => doc.id === subCollectionDocId
  );

  return subCollectionDoc;
}

async function createUser(email, password, displayName) {
  const userRecord = await admin.auth().createUser({
    email: email,
    password: password,
    displayName: displayName,
  });

  return userRecord;
}

module.exports = {
  getCollection,
  getCollectionWithQuery,
  getCollectionSnapshot,
  getDoc,
  createDoc,
  updateDoc,
  deleteDoc,
  createSubcollectionDoc,
  getSubCollectionReference,
  getSubCollectionSnapshot,
  getSubcollectionDoc,
  createUser,
};