import { capitalizeConst } from '../sanitization';
import { IFormatInputOptions, IPgOutputType, postgresDataTypes } from '../types';
interface IStringOptions {
    trim?: boolean;
    trimLeft?: boolean;
    trimRight?: boolean;
    toLowerCase?: boolean;
    toUpperCase?: boolean;
    truncate?: number | false;
    capitalize?: capitalizeConst | false;
    notUndef?: boolean;
    notEmpty?: boolean;
    enum?: string[] | false;
    min?: number | false;
    max?: number | false;
    email?: boolean;
    test?: RegExp | false;
    pgType?: postgresDataTypes;
}
declare const _default: (options?: IStringOptions | undefined) => (value: any, privateOptions: IFormatInputOptions) => string | IPgOutputType | Error | null | undefined;
export default _default;