import { FirestoreFieldValue } from './types';
/**
 * Helper function to convert plain JS object to Firestore format
 * @param obj - The plain JS object to convert
 * @returns The Firestore format object
 */
export declare function toFirestoreFormat(value: any): FirestoreFieldValue;
export declare function serializeDocument(obj: Record<string, unknown>): {
    fields: {
        [key: string]: FirestoreFieldValue;
    };
};
/**
 * Helper function to convert Firestore format object to plain JS object
 * @param value - The Firestore format object to convert
 * @returns The plain JS object
 */
export declare function fromFirestore<T>(value: unknown): T;
/**
 * Helper function to verify that a segment of a firestore path is a string
 * @param x - The value to verify
 * @throws An error if the value is not a string
 */
export declare function verifySegment(x: unknown): asserts x is string;
export declare function extractFieldPaths(fields: {
    [key: string]: FirestoreFieldValue;
}, parentPath?: string): string[];