import type { MdHeading } from '../types/markdown';
export declare function getDisplayedHeadings(headings: Array<MdHeading | null> | null | undefined, tocDepth: number): Array<MdHeading | null>;
export declare function getDisplayedHeadingsIds(headings: Array<MdHeading | null> | null | undefined): Array<string | undefined>;
export declare function getLeastDepth(headings: Array<MdHeading | null> | null | undefined): number;