import type { Plugin } from 'unified';
import type { Root } from 'mdast';
/**
 * Inserts runs of <br> between sibling block nodes to preserve the exact
 * number of *blank source lines* between them. No paragraph wrappers are added.
 *
 * Works because `mdast-util-to-hast` respects `data.hName`, turning our
 * `thematicBreak` into `<br>`. Multiple blank lines -> multiple `<br>` siblings.
 */
export declare const keepLineBreaksPlugin: Plugin<[], Root>;