/**
 * Negates the result of a promise
 *
 * @example
 * browser.waitUntil(not(alertIsPresent()));
 *
 * @param {!Function} expectedCondition The function to check
 *
 * @returns {!function} An expected condition that returns the negated value.
 */
export declare function not(expectedCondition: () => Promise<boolean>): () => Promise<boolean>;