/**
 * Copyright Aquera Inc 2023
 *
 * This source code is licensed under the BSD-3-Clause license found in the
 * LICENSE file in the root directory of this source tree.
 */
import NileElement from '../internal/nile-element';
import type { CSSResultGroup } from 'lit';
/**
 * Groups related commands under an optional heading inside a `nile-command-menu`.
 *
 * @tag nile-command-menu-group
 *
 * @summary A labelled section of command items within a command menu.
 * @status stable
 * @since 2.0
 *
 * @slot - The group's command items (`nile-command-menu-item`).
 * @slot heading - The group heading. Takes precedence over the `heading` attribute when provided.
 *
 * @csspart base - The component's base wrapper.
 * @csspart heading - The group heading.
 * @csspart items - The wrapper around the slotted items.
 */
export declare class NileCommandMenuGroup extends NileElement {
    static styles: CSSResultGroup;
    private readonly hasSlotController;
    /** The text heading shown above the group's items. Use the `heading` slot for richer content. */
    heading: string;
    connectedCallback(): void;
    render(): import("lit-html").TemplateResult<1>;
}
export default NileCommandMenuGroup;
declare global {
    interface HTMLElementTagNameMap {
        'nile-command-menu-group': NileCommandMenuGroup;
    }
}