/**
 * Naming a bookmark.
 *
 * A heading with no author-supplied id is addressable by a slug of its text, so
 * the slug has to be derivable identically by whoever writes the bookmark and
 * whoever points at it — the compiler and the document-outline pre-pass both
 * call this, and a disagreement would be a cross-reference resolving against an
 * id that never gets written.
 *
 * This used to be a registry with per-render state; the compiler numbers its
 * own bookmarks now, so what is left is the naming.
 */
/** Slug a piece of text into a bookmark id candidate. */
export declare function slugifyBookmarkText(text: string): string;
/**
 * Disambiguate a slug against ids already taken, appending `-1`, `-2`, … .
 *
 * Gives up after 100 attempts and returns the colliding id: a document with a
 * hundred headings slugging identically has a naming problem no suffix fixes.
 */
export declare function dedupeBookmarkId(base: string, taken: (id: string) => boolean): string;
//# sourceMappingURL=bookmarkRegistry.d.ts.map