wdio-wait-for/dist/browser/alertIsPresent.js

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

/**
 * A condition for checking an alert on the page
 *
 * @example
 * browser.waitUntil(alertIsPresent());
 *
 * @returns {!function} A condition that returns a promise
 *     representing whether an alert is present.
 */
export function alertIsPresent() {
    return async function () {
        try {
            await this.getAlertText();
            return true;
        }
        catch (err) {
            if (err instanceof Error && err.message.includes('no such alert')) {
                return false;
            }
            throw err;
        }
    };
}