import { FieldPath } from '../firestore/FieldPath';
import { DocumentChange } from '../types/index';
export declare function getNestedValue(obj: any, path: string | FieldPath, docId?: string): any;
export declare function deepEqual(a: any, b: any): boolean;
export declare function applyDataTransforms(existingData: any, updateData: any): any;
export declare function calculateDocChanges(oldDocs: any[], newDocs: any[]): DocumentChange[];
export declare function generateIdempotencyKey(): string;