import type { BaseConstructor } from '../Base/index.js';
/**
 * Import a component when given media query is true.
 *
 * @template {BaseConstructor} T
 * @param {() => Promise<T|{default:T}>} fn
 *   The import function.
 * @param {string} media
 *   The media query name and value (see https://developer.mozilla.org/en-US/docs/Web/CSS/@media#media_features)
 * @return {Promise<T>}
 * @link https://js-toolkit.studiometa.dev/api/helpers/importOnMediaQuery.html
*/
export declare function importOnMediaQuery<T extends BaseConstructor = BaseConstructor>(fn: () => Promise<T | {
    default: T;
}>, media: string): Promise<T>;