import { nothing, TemplateResult } from 'lit';
import { BahtElement } from '../base.js';
/**
 * Inline alert / callout.
 *
 *   <baht-alert tone="danger" heading="Couldn't reach the webhook"
 *             message="Check the URL and try again." dismissible></baht-alert>
 */
export declare class BahtAlert extends BahtElement {
    tone: 'info' | 'success' | 'warning' | 'danger';
    heading: string;
    message: string;
    dismissible: boolean;
    private dismissed;
    private generation;
    protected willUpdate(changed: Map<PropertyKey, unknown>): void;
    private dismiss;
    protected render(): TemplateResult | typeof nothing;
}