import { CSSResultGroup, TemplateResult } from 'lit';
import { SbbElement } from '../../core/base-elements.ts';
import { SbbTitleLevel } from '../../title.ts';
/**
 * It can be used as a container for one or more `sbb-alert` component.
 *
 * @slot - Use the unnamed slot to add `sbb-alert` elements to the `sbb-alert-group`.
 * @slot accessibility-title - title for this `sbb-alert-group` which is only visible for screen reader users.
 */
export declare class SbbAlertGroupElement extends SbbElement {
    static readonly elementName: string;
    static styles: CSSResultGroup;
    static readonly events: {
        readonly empty: "empty";
    };
    /**
     * The role attribute defines how to announce alerts to the user.
     *
     * 'status': sets aria-live to polite and aria-atomic to true.
     * 'alert': sets aria-live to assertive and aria-atomic to true.
     */
    accessor role: 'alert' | 'status' | string;
    /** Title for this alert group which is only visible for screen reader users. */
    accessor accessibilityTitle: string;
    /** Level of the accessibility title, will be rendered as heading tag (e.g. h2). Defaults to level 2. */
    accessor accessibilityTitleLevel: SbbTitleLevel;
    /** Whether the group currently has any alerts. */
    private accessor _hasAlerts;
    constructor();
    private _alertClosed;
    private _slotChanged;
    protected render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        'sbb-alert-group': SbbAlertGroupElement;
    }
}
//# sourceMappingURL=alert-group.component.d.ts.map