/**
 * `expressions.ts`
 * - expressions
 *
 *
 * @author      Steve Jung <steve@lemoncloud.io>
 * @date        2019-11-20 refactoring to ts via origin
 *
 * @copyright (C) lemoncloud.io 2019 - All Rights Reserved.
 */
export declare const parse: (str: any) => any;
export declare const serializeUpdateExpression: (schema: any, item: any) => any;
export declare const stringify: (expressions: any) => any;
export declare const buildFilterExpression: (key: any, operator: any, existingValueNames: any, val1: any, val2?: any) => any;