import * as Joi from 'joi';
import { OaValidationError } from '../oaValidationError';
/**
 * schema:RestrictedDiet
 *
 * A diet restricted to certain foods or preparations for cultural, religious, health or lifestyle reasons.
 */
export declare type RestrictedDiet = 'https://schema.org/VegetarianDiet' | 'https://schema.org/LowCalorieDiet' | 'https://schema.org/GlutenFreeDiet' | 'https://schema.org/KosherDiet' | 'https://schema.org/VeganDiet' | 'https://schema.org/LowFatDiet' | 'https://schema.org/LowLactoseDiet' | 'https://schema.org/DiabeticDiet' | 'https://schema.org/HinduDiet' | 'https://schema.org/LowSaltDiet' | 'https://schema.org/HalalDiet';
/**
 * schema:RestrictedDiet - Validation schema (w/ JOI)
 *
 * A diet restricted to certain foods or preparations for cultural, religious, health or lifestyle reasons.
 */
export declare const RestrictedDietJoiSchema: Joi.StringSchema;
/**
 * Runtime validator for schema:RestrictedDiet.
 *
 * If some data has one of the values of the schema:RestrictedDiet enum, it will be returned with the correct type.
 * Otherwise, this function returns an `OAValidationError` with details about why the data does not match.
 *
 * Use this to e.g. check a JSON object received in an HTTP request. Example usage (for an express request handler):
 *
 * ```ts
 * const maybeRestrictedDiet = validateRestrictedDiet(req.body); // `req.body` will have type `any` or `unknown`
 * if (maybeRestrictedDiet instanceof OaValidationError) {
 *   // From this point on, `maybeRestrictedDiet` will have type `OaValidationError`
 *   const error = maybeRestrictedDiet;
 *   // Do something with the error. Maybe ignore it? Or log it? Or throw? Up to you.
 * }
 * // From this point on, `maybeRestrictedDiet` will have type `RestrictedDiet`
 * const restrictedDiet = maybeRestrictedDiet;
 * ```
 */
export declare function validateRestrictedDiet(maybeRestrictedDiet: unknown): RestrictedDiet | OaValidationError;