export declare const registerModalWindow: (node: HTMLDivElement, handleBack: () => boolean) => void, setModalWindowGlobal: (node: HTMLDivElement) => void, unregisterModalWindow: (node: HTMLDivElement) => void, isTopModalWindow: (node: HTMLDivElement | null) => boolean, hasMountedModalWindow: () => boolean, isTopModalWindowGlobal: () => boolean, closeTopModalWindowByBack: () => boolean, pushModalHistoryEntry: () => void, isModalHistoryEntryCurrent: () => boolean, popModalHistoryEntry: () => void, consumeSkippedPopstate: () => boolean;