import { LitElement } from 'lit';
import './../pane/pane.js';
export declare class CustomSupportingPane extends LitElement {
    open: boolean;
    variant: 'compact' | 'medium' | 'expanded';
    left: boolean;
    id: string;
    supporting: any;
    onPaneClose({ detail }: CustomEvent): void;
    connectedCallback(): void;
    render(): import("lit-html").TemplateResult<1>;
}