import { Predicate } from './Predicate.js';
/**
 * @desc
 *  Ensures that the `value` is a plain {@link Object}.
 *  Based on Jon Schlinkert's implementation.
 *
 * @see https://github.com/jonschlinkert/is-plain-object
 *
 * @example
 *  import { ensure, isPlainObject } from 'tiny-types';
 *
 *  ensure('plain object', {}, isPlainObject());
 *
 * @returns {Predicate<string>}
 */
export declare function isPlainObject<T extends object = object>(): Predicate<T>;
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