interface StackItem {
    fileId: string;
    pageIndex: number;
    startTime?: number;
}
export default function useOpenFileStack(): {
    resetStack: () => void;
    pushToStack: (fileId: string, pageIndex: number, startTime?: number) => void;
    popFromStack: () => StackItem | undefined;
    fileStack: Readonly<import('vue').Ref<readonly {
        readonly fileId: string;
        readonly pageIndex: number;
        readonly startTime?: number | undefined;
    }[], readonly {
        readonly fileId: string;
        readonly pageIndex: number;
        readonly startTime?: number | undefined;
    }[]>>;
};
export {};