import type { firestore } from 'firebase-admin';
/**
 * An asynchronous function that takes a document snapshot, its 0-based index within the batch, and
 * the 0-based index of the batch as arguments.
 */
export type TraverseEachCallback<AppModelType = firestore.DocumentData, DbModelType extends firestore.DocumentData = firestore.DocumentData> = (doc: firestore.QueryDocumentSnapshot<AppModelType, DbModelType>, docIndex: number, batchIndex: number) => void | Promise<void>;