export declare class Timer {
    _secondsPassed: number;
    constructor();
    reset(): void;
    increaseTimer(): void;
    get secondsPassed(): number;
}
export type JupyterViewerState = {
    tab: number;
    getIntTab: () => number;
    setTab: (tab: number) => void;
    timer: Timer;
    increaseTimer: () => void;
    secondsPassed: number;
};
export declare const useJupyterViewerStore: import("zustand").UseBoundStore<import("zustand").StoreApi<JupyterViewerState>>;
export default useJupyterViewerStore;