import { Section, TOCItem } from '../core/types';
/**
 * Tracks overall reading progress based on section byte sizes.
 */
export declare class SectionProgress {
    private sizes;
    private sizePerLoc;
    private sizeTotal;
    private sectionFractions;
    private cumulativeSizes;
    constructor(sections: readonly Section[], sizePerLoc?: number);
    private calcCumulativeSizes;
    private calcSectionFractions;
    /**
     * Get progress info given section index and fraction within section.
     */
    getProgress(index: number, fractionInSection: number): {
        fraction: number;
        section: {
            current: number;
            total: number;
        };
        location: {
            current: number;
            total: number;
        };
        remaining: {
            section: number;
            total: number;
        };
    };
    /**
     * Get section index and fraction from total fraction (inverse of getProgress).
     */
    getSection(fraction: number): [index: number, fractionInSection: number];
    /**
     * Get section boundary fractions (for progress bar tick marks).
     */
    getFractions(): number[];
}
/**
 * Tracks which TOC item corresponds to the current reading position.
 */
export declare class TOCProgress {
    private ids;
    private map;
    private getFragment?;
    init(options: {
        toc: readonly TOCItem[];
        sectionIds: readonly (string | number)[];
        splitHref: (href: string) => [id: string | number, fragment: string | null] | undefined;
        getFragment: (doc: Document, id: string | number) => Element | null;
    }): Promise<void>;
    /**
     * Get the current TOC item for a given section index and visible range.
     */
    getProgress(index: number, range?: Range): TOCItem | null | undefined;
}
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