import { BaseValidator } from './base';
import type { JsonValidatorType, ValidationNames } from '../types/index';
// Export a function to create JSON validators
export declare function json(): JsonValidator;
export declare class JsonValidator extends BaseValidator<string> implements JsonValidatorType {
  name: ValidationNames;
  constructor();
  min(min: number): this;
  max(max: number): this;
  length(length: number): this;
  custom(fn: (value: string | null | undefined) => boolean, message: string): this;
}