import { LitElement } from 'lit';
export declare class PopupGroupAdd extends LitElement {
    static styles: import("lit").CSSResult;
    isOpen: boolean;
    newGroupName: string;
    powerPlantGroupList: any;
    render(): "" | import("lit-html").TemplateResult<1>;
    private onClickCreateGroup;
    private onInputGroupName;
    private onKeyDownGroupName;
    open(): Promise<void>;
    close(): void;
}
