import type { Change } from "firebase-functions";
import type { QueryDocumentSnapshot } from "firebase-functions/firestore";
/**
 * This function compares the 'before' and 'after' snapshots of a Firestore document and returns an object containing the changes, added, and removed fields.
 * It uses a custom deep equal function to compare objects.
 * @param {Object} data - The snapshot data containing the before and after Firestore document snapshots.
 * @returns {Object} - An object containing the changes, added, and removed fields.
 */
export declare const getDiffFromUpdatedData: <T extends object>(data: Change<QueryDocumentSnapshot>) => {
    before: T;
    after: T;
    changes: Partial<Record<keyof T, T[keyof T]>>;
    added: Partial<Record<keyof T, T[keyof T]>>;
    removed: Partial<Record<keyof T, T[keyof T]>>;
};