import type { TocItem } from './types.js';
/**
 * Scan a rendered content element for `h2`/`h3` headings and return a flat
 * {@link TocItem} list (with a `depth` so the renderer can indent `h3`s). Only
 * headings with an `id` are included, since ids (from rehype-slug) are what the
 * in-page links point at.
 *
 * Pure and DOM-only, so it is trivially testable and safe to re-run after every
 * navigation.
 */
export declare function tocFromContent(container: HTMLElement, selector?: string): TocItem[];