/**
 * This class is used to create a custom error.
 * Purpose of custom error is to provide consistent error response to application depends on it.
 * Class will define a structure which will be extended by other Userdefined errors.
 */
export declare abstract class CustomError extends Error {
    abstract statusCode: number;
    constructor();
    abstract serializeError(): {
        status: string;
        statusCode: number;
        data: {
            message: string;
            field?: string;
        }[];
    };
}