import { Extension, StringSchema } from 'joi';
import * as Joi from 'joi';
import { AnySchemaTyped } from './joi.model';
export interface ExtendedStringSchema extends StringSchema, AnySchemaTyped<string> {
    dateString(min?: string, max?: string): this;
}
export interface DateStringParams {
    min?: string;
    max?: string;
}
export declare function stringExtensions(joi: typeof Joi): Extension;