export type UrlProgressStatusState = {
    summaryText: string | null;
    slidesActive: boolean;
    slidesText: string | null;
    lastSlideRenderAt: number;
};
export declare function createUrlProgressStatusState(): UrlProgressStatusState;
export declare function applySummaryText(state: UrlProgressStatusState, text: string): {
    renderText: string | null;
};
export declare function applySlidesText(state: UrlProgressStatusState, text: string, nowMs: number): {
    renderText: string | null;
};
export declare function clearSlidesText(state: UrlProgressStatusState): {
    renderText: string | null;
    summaryText: string | null;
};
