import { BaseValidator } from './base';
import isEmail from '../lib/isEmail';
import isURL from '../lib/isURL';
import type { StringValidatorType, ValidationNames } from '../types/index';
export declare function string(): StringValidator;
export declare class StringValidator extends BaseValidator<string> implements StringValidatorType {
  name: ValidationNames;
  constructor();
  min(length: number): this;
  max(length: number): this;
  length(length: number): this;
  email(options?: Parameters<typeof isEmail>[1]): this;
  url(options?: Parameters<typeof isURL>[1]): this;
  matches(pattern: RegExp): this;
  equals(param: string): this;
  alphanumeric(): this;
  alpha(): this;
  numeric(): this;
  custom(fn: (value: string) => boolean, message: string): this;
}