import type { ClassConstructor, ElementAndApiLoaderProperty, ElementLoaderProperty } from '../types/utils.js';
/**
 * Loads the element class constructor from a manifest's `element`/`js` property.
 * @template {HTMLElement} ElementType
 * @param {ElementLoaderProperty<ElementType> | ElementAndApiLoaderProperty<ElementType>} property The manifest property to load the element from.
 * @returns {Promise<ClassConstructor<ElementType> | undefined>} The resolved element class constructor, if found.
 */
export declare function loadManifestElement<ElementType extends HTMLElement>(property: ElementLoaderProperty<ElementType> | ElementAndApiLoaderProperty<ElementType>): Promise<ClassConstructor<ElementType> | undefined>;