import type { WaitForOptions } from '../../types.js';
/**
 *
 * Wait for an element for the provided amount of
 * milliseconds to be present within the DOM. Returns true if the selector
 * matches at least one element that exists in the DOM, otherwise throws an
 * error. If the reverse flag is true, the command will instead return true
 * if the selector does not match any elements.
 *
 * :::info
 *
 * As opposed to other element commands WebdriverIO will not wait for the
 * element to exist to execute this command.
 *
 * :::
 *
 * <example>
    :waitForExistSyncExample.js
    it('should display a notification message after successful form submit', async () => {
        const form = await $('form');
        const notification = await $('.notification');
        await form.$(".send").click();
        await notification.waitForExist({ timeout: 5000 });
        expect(await notification.getText()).to.be.equal('Data transmitted successfully!')
    });
    it('should remove a message after successful form submit', async () => {
        const form = await $('form');
        const message = await $('.message');
        await form.$(".send").click();
        await message.waitForExist({ reverse: true });
    });
 * </example>
 *
 * @alias element.waitForExist
 * @param {WaitForOptions=}  options             waitForEnabled options (optional)
 * @param {Number=}          options.timeout     time in ms (default set based on [`waitforTimeout`](/docs/configuration#waitfortimeout) config value)
 * @param {Boolean=}         options.reverse     if true it waits for the opposite (default: false)
 * @param {String=}          options.timeoutMsg  if exists it overrides the default error message
 * @param {Number=}          options.interval    interval between checks (default: `waitforInterval`)
 * @return {Boolean} true     if element exists (or doesn't if flag is set)
 * @uses utility/waitUntil, state/isExisting
 * @type utility
 *
 */
export declare function waitForExist(this: WebdriverIO.Element, { timeout, interval, reverse, timeoutMsg }?: WaitForOptions): Promise<true>;
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