export declare class PopupController {
  private logger;
  private targetWindow;
  private resolveI;
  private rejectI;
  private instanceId;
  constructor(instanceId: string);
  show(url: string): Promise<boolean>;
  hide(message: boolean): void;
  protected attachListeners(): void;
  protected destroy(): void;
  protected onMessage(e: MessageEvent): void;
}