import GirafeHTMLElement from '../../base/GirafeHTMLElement.js';
import IGirafePanel from '../../tools/state/igirafepanel.js';
declare class AboutComponent extends GirafeHTMLElement implements IGirafePanel {
    protected templateUrl: string | null;
    protected styleUrls: string[] | null;
    template: () => import("uhtml").Hole;
    isPanelVisible: boolean;
    panelTitle: string;
    panelTogglePath: string;
    loaded: boolean;
    version: string;
    build: string;
    date: string;
    constructor();
    loadVersionInfos(): Promise<void>;
    togglePanel(visible: boolean): void;
    protected connectedCallback(): void;
    render(): void;
}
export default AboutComponent;