import type { Root as MdastRoot } from 'mdast';
import { visit } from 'unist-util-visit';

export function convertHeaderLinksToText() {
  return function (tree: MdastRoot) {
    visit(tree, 'heading', function (node) {
      visit(node, 'link', function (subNode, index, parent) {
        if (subNode.url.startsWith('#') && subNode.title == null) {
          if (parent && typeof index === 'number') {
            parent.children.splice(index, 1);
          }
        }
      });
    });
    return tree;
  };
}