import type { firestore } from 'firebase-admin';
/**
 * A function that takes a document snapshot and derives the data with which to update that document.
 */
export type UpdateDataGetter<AppModelType = firestore.DocumentData, DbModelType extends firestore.DocumentData = firestore.DocumentData> = (doc: firestore.QueryDocumentSnapshot<AppModelType, DbModelType>) => firestore.UpdateData<DbModelType>;