wdio-wait-for/dist/logical/not.js

a library of conditions that are useful for end-to-end tests

/**
 * 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 function not(expectedCondition) {
    return async function () {
        const result = await expectedCondition.call(this);
        return !result;
    };
}