import { Predicate } from './Predicate.js';
/**
 * @desc Ensures that the `value` is equal to one of the `allowedValues`
 *
 * @example
 * import { ensure, isOneOf, TinyType } from 'tiny-types';
 *
 * class StreetLight extends TinyType {
 *     constructor(public readonly value: string) {
 *         super();
 *
 *         ensure('StreetLight', value, isOneOf('red', 'yellow', 'green'));
 *     }
 * }
 *
 * @param {...T[]} allowedValues
 * @returns {Predicate<T>}
 */
export declare function isOneOf<T>(...allowedValues: T[]): Predicate<T>;
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