import { UmbLitElement } from '../../packages/core/lit-element/index.js';
/**
 * A full page error element that can be used either solo or for instance as the error 500 page and BootFailed
 */
export declare class UmbAppErrorElement extends UmbLitElement {
    #private;
    /**
     * The headline to display
     * @attr
     */
    errorHeadline?: string | null;
    /**
     * The error message to display
     * @attr
     */
    errorMessage?: string | null;
    /**
     * The error to display
     * @attr
     */
    error?: unknown;
    /**
     * Hide the back button
     * @attr
     */
    hideBackButton: boolean;
    constructor();
    render(): import("lit-html").TemplateResult<1>;
    static styles: import("lit").CSSResult[];
}
export default UmbAppErrorElement;
declare global {
    interface HTMLElementTagNameMap {
        'umb-app-error': UmbAppErrorElement;
    }
}