export declare class utils {
    static isString(obj: any): boolean;
    static isBoolean(obj: any): boolean;
    static isBlob(obj: any): boolean;
    static isNumber(value: any): boolean;
    static isFunction(func: any): boolean;
    static serializeToJSON(data: any): string;
    static parseStringToJson(data: any): any;
    static convertDateFieldToISOString(data: object): object;
    static hex16(): string;
    static addTrailingSlash(url: string): string;
    static removeSlashes(url: string): string;
    static clone(from: any, to?: {}, action?: Function): any;
    private static _parseDateProperties;
    private static _tryFormatFieldToDate;
}