/**
 * A table-of-contents entry: one heading scanned from the rendered page.
 */
export type TocItem = {
    /** The heading's `id` (from rehype-slug); the in-page link is `#${id}`. */
    id: string;
    /** Heading text. */
    title: string;
    /** Heading level: `2` for an `h2`, `3` for an `h3`. */
    depth: 2 | 3;
};