import type { StringOrElements } from './../utils/element.types';
/**
 * A condition for checking number of elements with given selector
 *
 * @example
 * browser.waitUntil(numberOfElementsToBe('a', 4));
 *
 * @param {!string | ChainablePromiseArray<WebdriverIO.ElementArray>} selectorOrElementArray The selector or elements array to check
 * @param {!number} expectedNumber The selector to check
 *
 * @returns {!function} An expected condition that returns a promise
 *     representing whether the element length.
 */
export declare function numberOfElementsToBe(selectorOrElementArray: StringOrElements, expectedNumber: number): () => Promise<boolean>;