import { UmbLitElement } from '../../packages/core/lit-element/index.js';
import '../installer/shared/layout/installer-layout.element.js';
import './upgrader-view.element.js';
/**
 * @element umb-upgrader
 */
export declare class UmbUpgraderElement extends UmbLitElement {
    #private;
    private _upgradeSettings?;
    private _fetching;
    private _upgrading;
    private _errorMessage;
    constructor();
    render(): import("lit-html").TemplateResult<1>;
    private _setup;
}
export default UmbUpgraderElement;
declare global {
    interface HTMLElementTagNameMap {
        'umb-upgrader': UmbUpgraderElement;
    }
}