/**
 * Returns whether a value is a plain object
 * (an object that is created using an object literal, Object.create(null) or similar).
 * Rejects anything with a custom prototype or a non-object ECMAScript type.
 * Also rejects React elements and components
 *
 * **Note:** if the host environment does not support Symbol, any object with a $$typeof
 * property is considered a React element
 *
 * @param {*} test The value to check
 * @returns {boolean} Returns `true` if `test` is a plain object, else `false`.
 * @example
 *
 *      isPlainObject({ a: 'test' });   //=> true
 *
 *      isPlainObject(moment());        //=> false
 *
 *      isPlainObject(<span></span>);   //=> false
 */
export declare const isPlainObject: (test: any) => test is Record<any, any>;
export default isPlainObject;