import { Publication, Locator } from '@readium/shared';

interface TocItem {
    id: string;
    href: string;
    title?: string;
    children?: TocItem[];
    position?: number;
}
type TocEntryRef = Omit<TocItem, "children">;

interface TimelineItem {
    href: string;
    readingOrderIndex?: number;
    title?: string;
    fragments?: string[];
    positionRange?: [number, number?];
    progressionRange?: [number, number?];
    totalProgressionRange?: [number, number?];
    children?: TimelineItem[];
}
interface TimelineProgression {
    totalItems?: number;
    currentIndex?: number;
    totalPositions?: number;
    currentPositions?: number[];
    relativeProgression?: number;
    totalProgression?: number;
    currentChapter?: string;
    positionsLeft?: number;
}
interface UnstableTimeline {
    title?: string;
    items?: {
        [href: string]: TimelineItem;
    };
    toc?: {
        tree?: TocItem[];
        currentEntry?: TocEntryRef | null;
    };
    currentItem?: TimelineItem | null;
    previousItem?: TimelineItem | null;
    nextItem?: TimelineItem | null;
    progression?: TimelineProgression;
}
declare let timelineInstance: UnstableTimeline | undefined;
declare const useTimeline: ({ publication, currentLocation, currentPositions, positionsList, onChange }: {
    publication: Publication | null;
    currentLocation?: Locator;
    currentPositions?: number[];
    positionsList?: Locator[];
    onChange?: (timeline: UnstableTimeline) => void;
}) => UnstableTimeline;

export { type TimelineItem as T, type UnstableTimeline as U, type TimelineProgression as a, type TocItem as b, type TocEntryRef as c, timelineInstance as t, useTimeline as u };