/**
 * @description compose semantic outline HTML from additive list-item metadata
 */
import { HtmlTransformFnType } from '@wangeditor-next/core';
/**
 * List-item serialization remains backward compatible for ordinary lists.
 * Only outline list items need document-level composition to create valid
 * `ol > li > hN` structure.
 */
export declare const transformListHtml: HtmlTransformFnType;