/**
 * Returns a unique `titleId` / `descId` pair for one dialog instance. Shared by the
 * declarative `compsych-dialog` and the imperative `DialogService` so ids never collide
 * when both kinds of dialog are open at once (e.g. GRO's `ModalService` delegating here).
 */
export declare function nextDialogIds(): {
    titleId: string;
    descId: string;
};