import * as Joi from 'joi';
import { TypedPropertyDecorator } from '../core';
import { ModifierProviders, JoifulOptions } from './common';
import { AnySchemaModifiers } from './any';
export interface FunctionSchemaModifiers extends AnySchemaModifiers {
    /**
     * Specifies the arity of the function.
     * @param argumentCount The number of arguments the function should contain.
     */
    arity(argumentCount: number): this;
    /**
     * Specifies the maximum arity of the function.
     * @param maxArgumentCount The maximum number of arguments the function should contain.
     */
    maxArity(maxArgumentCount: number): this;
    /**
     * Specifies the minimum arity of the function.
     * @param minArgumentCount The minimum number of arguments the function should contain.
     */
    minArity(minArgumentCount: number): this;
}
export declare function getFunctionSchemaModifierProviders(getJoi: () => typeof Joi): ModifierProviders<Joi.FunctionSchema, FunctionSchemaModifiers>;
export interface FunctionSchemaDecorator extends FunctionSchemaModifiers, TypedPropertyDecorator<Function> {
}
export declare const createFunctionPropertyDecorator: (joifulOptions: JoifulOptions) => import("./common").PropertyDecorator<Function, FunctionSchemaModifiers>;