firewalk/dist/api/interfaces/MigrationPredicate.d.ts

A collection traversal library for Firestore

import type { firestore } from 'firebase-admin';
/**
 * A function that takes a document snapshot and returns a boolean indicating whether to migrate it.
 */
export type MigrationPredicate<D = firestore.DocumentData> = (doc: firestore.QueryDocumentSnapshot<D>) => boolean;