import { Dialog } from '../Dialog';
import { DialogExtension } from '../DialogExtension';
import { DialogCreationOptions } from '../DialogCreationOptions';
/**
 * An implementation of Dialog.
 */
export declare class DialogImpl implements Dialog {
    addon_key: string;
    open: boolean;
    constructor(dialogCreationOptions: DialogCreationOptions, dialogExtension: DialogExtension);
    close(): void;
    isOpen(): boolean;
}