/**
 * @description Enum-like registry of semantic document block types (H1–H6, TOC,
 * FOOTNOTES, CODE, LIST, PARAGRAPH). Each entry carries a `toText()` serializer
 * that converts a `LineItemBlock` to HTML. Helper methods `isHeadline`,
 * `blockToText`, and `headlineByLevel` are mixed in on the registry object.
 * The inner `linesToText` function handles inline bold/italic/link/footnote
 * formatting by tracking open `WordFormat` spans across words and lines.
 */
declare const BlockTypes: Record<string, any>;
export default BlockTypes;