import { LitElement } from 'lit';
import type { ToggleButton } from '../../base/toggle-button.js';
/**
 * @tag md-connected-button-group
 *
 * @slot - toggle buttons
 */
export declare class M3ConnectedButtonGroup extends LitElement {
    #private;
    multiple: boolean;
    $buttons: Array<ToggleButton>;
    static styles: any[];
    render(): import("lit-html").TemplateResult<1>;
}
declare global {
    interface HTMLElementTagNameMap {
        'md-connected-button-group': M3ConnectedButtonGroup;
    }
}